git.sesse.net Git - ffmpeg/blob - ffmpeg.c

   1 /*
   2  * Copyright (c) 2000-2003 Fabrice Bellard
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 /**
  22  * @file
  23  * multimedia converter based on the FFmpeg libraries
  24  */
  25
  26 #include "config.h"
  27 #include <ctype.h>
  28 #include <string.h>
  29 #include <math.h>
  30 #include <stdlib.h>
  31 #include <errno.h>
  32 #include <limits.h>
  33 #include <stdint.h>
  34
  35 #if HAVE_ISATTY
  36 #if HAVE_IO_H
  37 #include <io.h>
  38 #endif
  39 #if HAVE_UNISTD_H
  40 #include <unistd.h>
  41 #endif
  42 #endif
  43
  44 #include "libavformat/avformat.h"
  45 #include "libavdevice/avdevice.h"
  46 #include "libswresample/swresample.h"
  47 #include "libavutil/opt.h"
  48 #include "libavutil/channel_layout.h"
  49 #include "libavutil/parseutils.h"
  50 #include "libavutil/samplefmt.h"
  51 #include "libavutil/fifo.h"
  52 #include "libavutil/intreadwrite.h"
  53 #include "libavutil/dict.h"
  54 #include "libavutil/mathematics.h"
  55 #include "libavutil/pixdesc.h"
  56 #include "libavutil/avstring.h"
  57 #include "libavutil/libm.h"
  58 #include "libavutil/imgutils.h"
  59 #include "libavutil/timestamp.h"
  60 #include "libavutil/bprint.h"
  61 #include "libavutil/time.h"
  62 #include "libavformat/os_support.h"
  63
  64 #include "libavformat/ffm.h" // not public API
  65
  66 # include "libavfilter/avcodec.h"
  67 # include "libavfilter/avfilter.h"
  68 # include "libavfilter/buffersrc.h"
  69 # include "libavfilter/buffersink.h"
  70
  71 #if HAVE_SYS_RESOURCE_H
  72 #include <sys/time.h>
  73 #include <sys/types.h>
  74 #include <sys/resource.h>
  75 #elif HAVE_GETPROCESSTIMES
  76 #include <windows.h>
  77 #endif
  78 #if HAVE_GETPROCESSMEMORYINFO
  79 #include <windows.h>
  80 #include <psapi.h>
  81 #endif
  82
  83 #if HAVE_SYS_SELECT_H
  84 #include <sys/select.h>
  85 #endif
  86
  87 #if HAVE_TERMIOS_H
  88 #include <fcntl.h>
  89 #include <sys/ioctl.h>
  90 #include <sys/time.h>
  91 #include <termios.h>
  92 #elif HAVE_KBHIT
  93 #include <conio.h>
  94 #endif
  95
  96 #if HAVE_PTHREADS
  97 #include <pthread.h>
  98 #endif
  99
 100 #include <time.h>
 101
 102 #include "ffmpeg.h"
 103 #include "cmdutils.h"
 104
 105 #include "libavutil/avassert.h"
 106
 107 const char program_name[] = "ffmpeg";
 108 const int program_birth_year = 2000;
 109
 110 static FILE *vstats_file;
 111
 112 const char *const forced_keyframes_const_names[] = {
 113     "n",
 114     "n_forced",
 115     "prev_forced_n",
 116     "prev_forced_t",
 117     "t",
 118     NULL
 119 };
 120
 121 static void do_video_stats(OutputStream *ost, int frame_size);
 122 static int64_t getutime(void);
 123 static int64_t getmaxrss(void);
 124
 125 static int run_as_daemon  = 0;
 126 static int64_t video_size = 0;
 127 static int64_t audio_size = 0;
 128 static int64_t subtitle_size = 0;
 129 static int64_t extra_size = 0;
 130 static int nb_frames_dup = 0;
 131 static int nb_frames_drop = 0;
 132 static int64_t decode_error_stat[2];
 133
 134 static int current_time;
 135 AVIOContext *progress_avio = NULL;
 136
 137 static uint8_t *subtitle_out;
 138
 139 #if HAVE_PTHREADS
 140 /* signal to input threads that they should exit; set by the main thread */
 141 static int transcoding_finished;
 142 #endif
 143
 144 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 145
 146 InputStream **input_streams = NULL;
 147 int        nb_input_streams = 0;
 148 InputFile   **input_files   = NULL;
 149 int        nb_input_files   = 0;
 150
 151 OutputStream **output_streams = NULL;
 152 int         nb_output_streams = 0;
 153 OutputFile   **output_files   = NULL;
 154 int         nb_output_files   = 0;
 155
 156 FilterGraph **filtergraphs;
 157 int        nb_filtergraphs;
 158
 159 #if HAVE_TERMIOS_H
 160
 161 /* init terminal so that we can grab keys */
 162 static struct termios oldtty;
 163 static int restore_tty;
 164 #endif
 165
 166 static void free_input_threads(void);
 167
 168
 169 /* sub2video hack:
 170    Convert subtitles to video with alpha to insert them in filter graphs.
 171    This is a temporary solution until libavfilter gets real subtitles support.
 172  */
 173
 174 static int sub2video_get_blank_frame(InputStream *ist)
 175 {
 176     int ret;
 177     AVFrame *frame = ist->sub2video.frame;
 178
 179     av_frame_unref(frame);
 180     ist->sub2video.frame->width  = ist->sub2video.w;
 181     ist->sub2video.frame->height = ist->sub2video.h;
 182     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
 183     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
 184         return ret;
 185     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
 186     return 0;
 187 }
 188
 189 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 190                                 AVSubtitleRect *r)
 191 {
 192     uint32_t *pal, *dst2;
 193     uint8_t *src, *src2;
 194     int x, y;
 195
 196     if (r->type != SUBTITLE_BITMAP) {
 197         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 198         return;
 199     }
 200     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 201         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 202         return;
 203     }
 204
 205     dst += r->y * dst_linesize + r->x * 4;
 206     src = r->pict.data[0];
 207     pal = (uint32_t *)r->pict.data[1];
 208     for (y = 0; y < r->h; y++) {
 209         dst2 = (uint32_t *)dst;
 210         src2 = src;
 211         for (x = 0; x < r->w; x++)
 212             *(dst2++) = pal[*(src2++)];
 213         dst += dst_linesize;
 214         src += r->pict.linesize[0];
 215     }
 216 }
 217
 218 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 219 {
 220     AVFrame *frame = ist->sub2video.frame;
 221     int i;
 222
 223     av_assert1(frame->data[0]);
 224     ist->sub2video.last_pts = frame->pts = pts;
 225     for (i = 0; i < ist->nb_filters; i++)
 226         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
 227                                      AV_BUFFERSRC_FLAG_KEEP_REF |
 228                                      AV_BUFFERSRC_FLAG_PUSH);
 229 }
 230
 231 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 232 {
 233     int w = ist->sub2video.w, h = ist->sub2video.h;
 234     AVFrame *frame = ist->sub2video.frame;
 235     int8_t *dst;
 236     int     dst_linesize;
 237     int num_rects, i;
 238     int64_t pts, end_pts;
 239
 240     if (!frame)
 241         return;
 242     if (sub) {
 243         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
 244                                  AV_TIME_BASE_Q, ist->st->time_base);
 245         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
 246                                  AV_TIME_BASE_Q, ist->st->time_base);
 247         num_rects = sub->num_rects;
 248     } else {
 249         pts       = ist->sub2video.end_pts;
 250         end_pts   = INT64_MAX;
 251         num_rects = 0;
 252     }
 253     if (sub2video_get_blank_frame(ist) < 0) {
 254         av_log(ist->st->codec, AV_LOG_ERROR,
 255                "Impossible to get a blank canvas.\n");
 256         return;
 257     }
 258     dst          = frame->data    [0];
 259     dst_linesize = frame->linesize[0];
 260     for (i = 0; i < num_rects; i++)
 261         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 262     sub2video_push_ref(ist, pts);
 263     ist->sub2video.end_pts = end_pts;
 264 }
 265
 266 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 267 {
 268     InputFile *infile = input_files[ist->file_index];
 269     int i, j, nb_reqs;
 270     int64_t pts2;
 271
 272     /* When a frame is read from a file, examine all sub2video streams in
 273        the same file and send the sub2video frame again. Otherwise, decoded
 274        video frames could be accumulating in the filter graph while a filter
 275        (possibly overlay) is desperately waiting for a subtitle frame. */
 276     for (i = 0; i < infile->nb_streams; i++) {
 277         InputStream *ist2 = input_streams[infile->ist_index + i];
 278         if (!ist2->sub2video.frame)
 279             continue;
 280         /* subtitles seem to be usually muxed ahead of other streams;
 281            if not, substracting a larger time here is necessary */
 282         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 283         /* do not send the heartbeat frame if the subtitle is already ahead */
 284         if (pts2 <= ist2->sub2video.last_pts)
 285             continue;
 286         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
 287             sub2video_update(ist2, NULL);
 288         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 289             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 290         if (nb_reqs)
 291             sub2video_push_ref(ist2, pts2);
 292     }
 293 }
 294
 295 static void sub2video_flush(InputStream *ist)
 296 {
 297     int i;
 298
 299     for (i = 0; i < ist->nb_filters; i++)
 300         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 301 }
 302
 303 /* end of sub2video hack */
 304
 305 void term_exit(void)
 306 {
 307     av_log(NULL, AV_LOG_QUIET, "%s", "");
 308 #if HAVE_TERMIOS_H
 309     if(restore_tty)
 310         tcsetattr (0, TCSANOW, &oldtty);
 311 #endif
 312 }
 313
 314 static volatile int received_sigterm = 0;
 315 static volatile int received_nb_signals = 0;
 316
 317 static void
 318 sigterm_handler(int sig)
 319 {
 320     received_sigterm = sig;
 321     received_nb_signals++;
 322     term_exit();
 323     if(received_nb_signals > 3)
 324         exit_program(123);
 325 }
 326
 327 void term_init(void)
 328 {
 329 #if HAVE_TERMIOS_H
 330     if(!run_as_daemon){
 331         struct termios tty;
 332         int istty = 1;
 333 #if HAVE_ISATTY
 334         istty = isatty(0) && isatty(2);
 335 #endif
 336         if (istty && tcgetattr (0, &tty) == 0) {
 337             oldtty = tty;
 338             restore_tty = 1;
 339
 340             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 341                              |INLCR|IGNCR|ICRNL|IXON);
 342             tty.c_oflag |= OPOST;
 343             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 344             tty.c_cflag &= ~(CSIZE|PARENB);
 345             tty.c_cflag |= CS8;
 346             tty.c_cc[VMIN] = 1;
 347             tty.c_cc[VTIME] = 0;
 348
 349             tcsetattr (0, TCSANOW, &tty);
 350         }
 351         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 352     }
 353 #endif
 354     avformat_network_deinit();
 355
 356     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 357     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 358 #ifdef SIGXCPU
 359     signal(SIGXCPU, sigterm_handler);
 360 #endif
 361 }
 362
 363 /* read a key without blocking */
 364 static int read_key(void)
 365 {
 366     unsigned char ch;
 367 #if HAVE_TERMIOS_H
 368     int n = 1;
 369     struct timeval tv;
 370     fd_set rfds;
 371
 372     FD_ZERO(&rfds);
 373     FD_SET(0, &rfds);
 374     tv.tv_sec = 0;
 375     tv.tv_usec = 0;
 376     n = select(1, &rfds, NULL, NULL, &tv);
 377     if (n > 0) {
 378         n = read(0, &ch, 1);
 379         if (n == 1)
 380             return ch;
 381
 382         return n;
 383     }
 384 #elif HAVE_KBHIT
 385 #    if HAVE_PEEKNAMEDPIPE
 386     static int is_pipe;
 387     static HANDLE input_handle;
 388     DWORD dw, nchars;
 389     if(!input_handle){
 390         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 391         is_pipe = !GetConsoleMode(input_handle, &dw);
 392     }
 393
 394     if (stdin->_cnt > 0) {
 395         read(0, &ch, 1);
 396         return ch;
 397     }
 398     if (is_pipe) {
 399         /* When running under a GUI, you will end here. */
 400         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
 401             // input pipe may have been closed by the program that ran ffmpeg
 402             return -1;
 403         }
 404         //Read it
 405         if(nchars != 0) {
 406             read(0, &ch, 1);
 407             return ch;
 408         }else{
 409             return -1;
 410         }
 411     }
 412 #    endif
 413     if(kbhit())
 414         return(getch());
 415 #endif
 416     return -1;
 417 }
 418
 419 static int decode_interrupt_cb(void *ctx)
 420 {
 421     return received_nb_signals > 1;
 422 }
 423
 424 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 425
 426 static void ffmpeg_cleanup(int ret)
 427 {
 428     int i, j;
 429
 430     if (do_benchmark) {
 431         int maxrss = getmaxrss() / 1024;
 432         printf("bench: maxrss=%ikB\n", maxrss);
 433     }
 434
 435     for (i = 0; i < nb_filtergraphs; i++) {
 436         avfilter_graph_free(&filtergraphs[i]->graph);
 437         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 438             av_freep(&filtergraphs[i]->inputs[j]->name);
 439             av_freep(&filtergraphs[i]->inputs[j]);
 440         }
 441         av_freep(&filtergraphs[i]->inputs);
 442         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 443             av_freep(&filtergraphs[i]->outputs[j]->name);
 444             av_freep(&filtergraphs[i]->outputs[j]);
 445         }
 446         av_freep(&filtergraphs[i]->outputs);
 447         av_freep(&filtergraphs[i]->graph_desc);
 448         av_freep(&filtergraphs[i]);
 449     }
 450     av_freep(&filtergraphs);
 451
 452     av_freep(&subtitle_out);
 453
 454     /* close files */
 455     for (i = 0; i < nb_output_files; i++) {
 456         AVFormatContext *s = output_files[i]->ctx;
 457         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 458             avio_close(s->pb);
 459         avformat_free_context(s);
 460         av_dict_free(&output_files[i]->opts);
 461         av_freep(&output_files[i]);
 462     }
 463     for (i = 0; i < nb_output_streams; i++) {
 464         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 465         while (bsfc) {
 466             AVBitStreamFilterContext *next = bsfc->next;
 467             av_bitstream_filter_close(bsfc);
 468             bsfc = next;
 469         }
 470         output_streams[i]->bitstream_filters = NULL;
 471         av_frame_free(&output_streams[i]->filtered_frame);
 472
 473         av_parser_close(output_streams[i]->parser);
 474
 475         av_freep(&output_streams[i]->forced_keyframes);
 476         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
 477         av_freep(&output_streams[i]->avfilter);
 478         av_freep(&output_streams[i]->logfile_prefix);
 479         av_freep(&output_streams[i]);
 480     }
 481 #if HAVE_PTHREADS
 482     free_input_threads();
 483 #endif
 484     for (i = 0; i < nb_input_files; i++) {
 485         avformat_close_input(&input_files[i]->ctx);
 486         av_freep(&input_files[i]);
 487     }
 488     for (i = 0; i < nb_input_streams; i++) {
 489         av_frame_free(&input_streams[i]->decoded_frame);
 490         av_frame_free(&input_streams[i]->filter_frame);
 491         av_dict_free(&input_streams[i]->opts);
 492         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
 493         av_frame_free(&input_streams[i]->sub2video.frame);
 494         av_freep(&input_streams[i]->filters);
 495         av_freep(&input_streams[i]->hwaccel_device);
 496         av_freep(&input_streams[i]);
 497     }
 498
 499     if (vstats_file)
 500         fclose(vstats_file);
 501     av_free(vstats_filename);
 502
 503     av_freep(&input_streams);
 504     av_freep(&input_files);
 505     av_freep(&output_streams);
 506     av_freep(&output_files);
 507
 508     uninit_opts();
 509
 510     avformat_network_deinit();
 511
 512     if (received_sigterm) {
 513         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 514                (int) received_sigterm);
 515     }
 516     term_exit();
 517 }
 518
 519 void assert_avoptions(AVDictionary *m)
 520 {
 521     AVDictionaryEntry *t;
 522     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 523         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 524         exit_program(1);
 525     }
 526 }
 527
 528 static void abort_codec_experimental(AVCodec *c, int encoder)
 529 {
 530     exit_program(1);
 531 }
 532
 533 static void update_benchmark(const char *fmt, ...)
 534 {
 535     if (do_benchmark_all) {
 536         int64_t t = getutime();
 537         va_list va;
 538         char buf[1024];
 539
 540         if (fmt) {
 541             va_start(va, fmt);
 542             vsnprintf(buf, sizeof(buf), fmt, va);
 543             va_end(va);
 544             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 545         }
 546         current_time = t;
 547     }
 548 }
 549
 550 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 551 {
 552     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 553     AVCodecContext          *avctx = ost->st->codec;
 554     int ret;
 555
 556     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 557         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 558         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 559
 560     /*
 561      * Audio encoders may split the packets --  #frames in != #packets out.
 562      * But there is no reordering, so we can limit the number of output packets
 563      * by simply dropping them here.
 564      * Counting encoded video frames needs to be done separately because of
 565      * reordering, see do_video_out()
 566      */
 567     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 568         if (ost->frame_number >= ost->max_frames) {
 569             av_free_packet(pkt);
 570             return;
 571         }
 572         ost->frame_number++;
 573     }
 574
 575     while (bsfc) {
 576         AVPacket new_pkt = *pkt;
 577         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 578                                            &new_pkt.data, &new_pkt.size,
 579                                            pkt->data, pkt->size,
 580                                            pkt->flags & AV_PKT_FLAG_KEY);
 581         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 582             uint8_t *t = av_malloc(new_pkt.size + FF_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
 583             if(t) {
 584                 memcpy(t, new_pkt.data, new_pkt.size);
 585                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 586                 new_pkt.data = t;
 587                 new_pkt.buf = NULL;
 588                 a = 1;
 589             } else
 590                 a = AVERROR(ENOMEM);
 591         }
 592         if (a > 0) {
 593             av_free_packet(pkt);
 594             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
 595                                            av_buffer_default_free, NULL, 0);
 596             if (!new_pkt.buf)
 597                 exit_program(1);
 598         } else if (a < 0) {
 599             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 600                    bsfc->filter->name, pkt->stream_index,
 601                    avctx->codec ? avctx->codec->name : "copy");
 602             print_error("", a);
 603             if (exit_on_error)
 604                 exit_program(1);
 605         }
 606         *pkt = new_pkt;
 607
 608         bsfc = bsfc->next;
 609     }
 610
 611     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
 612         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
 613         pkt->dts != AV_NOPTS_VALUE &&
 614         ost->last_mux_dts != AV_NOPTS_VALUE) {
 615       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 616       if (pkt->dts < max) {
 617         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
 618         av_log(s, loglevel, "Non-monotonous DTS in output stream "
 619                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
 620                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
 621         if (exit_on_error) {
 622             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
 623             exit_program(1);
 624         }
 625         av_log(s, loglevel, "changing to %"PRId64". This may result "
 626                "in incorrect timestamps in the output file.\n",
 627                max);
 628         if(pkt->pts >= pkt->dts)
 629             pkt->pts = FFMAX(pkt->pts, max);
 630         pkt->dts = max;
 631       }
 632     }
 633     ost->last_mux_dts = pkt->dts;
 634
 635     pkt->stream_index = ost->index;
 636
 637     if (debug_ts) {
 638         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 639                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 640                 av_get_media_type_string(ost->st->codec->codec_type),
 641                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 642                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 643                 pkt->size
 644               );
 645     }
 646
 647     ret = av_interleaved_write_frame(s, pkt);
 648     if (ret < 0) {
 649         print_error("av_interleaved_write_frame()", ret);
 650         exit_program(1);
 651     }
 652 }
 653
 654 static void close_output_stream(OutputStream *ost)
 655 {
 656     OutputFile *of = output_files[ost->file_index];
 657
 658     ost->finished = 1;
 659     if (of->shortest) {
 660         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
 661         of->recording_time = FFMIN(of->recording_time, end);
 662     }
 663 }
 664
 665 static int check_recording_time(OutputStream *ost)
 666 {
 667     OutputFile *of = output_files[ost->file_index];
 668
 669     if (of->recording_time != INT64_MAX &&
 670         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 671                       AV_TIME_BASE_Q) >= 0) {
 672         close_output_stream(ost);
 673         return 0;
 674     }
 675     return 1;
 676 }
 677
 678 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 679                          AVFrame *frame)
 680 {
 681     AVCodecContext *enc = ost->st->codec;
 682     AVPacket pkt;
 683     int got_packet = 0;
 684
 685     av_init_packet(&pkt);
 686     pkt.data = NULL;
 687     pkt.size = 0;
 688
 689     if (!check_recording_time(ost))
 690         return;
 691
 692     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 693         frame->pts = ost->sync_opts;
 694     ost->sync_opts = frame->pts + frame->nb_samples;
 695
 696     av_assert0(pkt.size || !pkt.data);
 697     update_benchmark(NULL);
 698     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 699         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 700         exit_program(1);
 701     }
 702     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 703
 704     if (got_packet) {
 705         if (pkt.pts != AV_NOPTS_VALUE)
 706             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 707         if (pkt.dts != AV_NOPTS_VALUE)
 708             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 709         if (pkt.duration > 0)
 710             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 711
 712         if (debug_ts) {
 713             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 714                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 715                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 716                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 717         }
 718
 719         audio_size += pkt.size;
 720         write_frame(s, &pkt, ost);
 721
 722         av_free_packet(&pkt);
 723     }
 724 }
 725
 726 static void do_subtitle_out(AVFormatContext *s,
 727                             OutputStream *ost,
 728                             InputStream *ist,
 729                             AVSubtitle *sub)
 730 {
 731     int subtitle_out_max_size = 1024 * 1024;
 732     int subtitle_out_size, nb, i;
 733     AVCodecContext *enc;
 734     AVPacket pkt;
 735     int64_t pts;
 736
 737     if (sub->pts == AV_NOPTS_VALUE) {
 738         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 739         if (exit_on_error)
 740             exit_program(1);
 741         return;
 742     }
 743
 744     enc = ost->st->codec;
 745
 746     if (!subtitle_out) {
 747         subtitle_out = av_malloc(subtitle_out_max_size);
 748     }
 749
 750     /* Note: DVB subtitle need one packet to draw them and one other
 751        packet to clear them */
 752     /* XXX: signal it in the codec context ? */
 753     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 754         nb = 2;
 755     else
 756         nb = 1;
 757
 758     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 759     pts = sub->pts;
 760     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
 761         pts -= output_files[ost->file_index]->start_time;
 762     for (i = 0; i < nb; i++) {
 763         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 764         if (!check_recording_time(ost))
 765             return;
 766
 767         sub->pts = pts;
 768         // start_display_time is required to be 0
 769         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 770         sub->end_display_time  -= sub->start_display_time;
 771         sub->start_display_time = 0;
 772         if (i == 1)
 773             sub->num_rects = 0;
 774         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 775                                                     subtitle_out_max_size, sub);
 776         if (subtitle_out_size < 0) {
 777             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 778             exit_program(1);
 779         }
 780
 781         av_init_packet(&pkt);
 782         pkt.data = subtitle_out;
 783         pkt.size = subtitle_out_size;
 784         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 785         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 786         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 787             /* XXX: the pts correction is handled here. Maybe handling
 788                it in the codec would be better */
 789             if (i == 0)
 790                 pkt.pts += 90 * sub->start_display_time;
 791             else
 792                 pkt.pts += 90 * sub->end_display_time;
 793         }
 794         subtitle_size += pkt.size;
 795         write_frame(s, &pkt, ost);
 796     }
 797 }
 798
 799 static void do_video_out(AVFormatContext *s,
 800                          OutputStream *ost,
 801                          AVFrame *in_picture)
 802 {
 803     int ret, format_video_sync;
 804     AVPacket pkt;
 805     AVCodecContext *enc = ost->st->codec;
 806     int nb_frames, i;
 807     double sync_ipts, delta;
 808     double duration = 0;
 809     int frame_size = 0;
 810     InputStream *ist = NULL;
 811
 812     if (ost->source_index >= 0)
 813         ist = input_streams[ost->source_index];
 814
 815     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 816         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 817
 818     sync_ipts = in_picture->pts;
 819     delta = sync_ipts - ost->sync_opts + duration;
 820
 821     /* by default, we output a single frame */
 822     nb_frames = 1;
 823
 824     format_video_sync = video_sync_method;
 825     if (format_video_sync == VSYNC_AUTO) {
 826         if(!strcmp(s->oformat->name, "avi")) {
 827             format_video_sync = VSYNC_VFR;
 828         } else
 829             format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 830         if (   ist
 831             && format_video_sync == VSYNC_CFR
 832             && input_files[ist->file_index]->ctx->nb_streams == 1
 833             && input_files[ist->file_index]->input_ts_offset == 0) {
 834             format_video_sync = VSYNC_VSCFR;
 835         }
 836         if (format_video_sync == VSYNC_CFR && copy_ts) {
 837             format_video_sync = VSYNC_VSCFR;
 838         }
 839     }
 840
 841     switch (format_video_sync) {
 842     case VSYNC_VSCFR:
 843         if (ost->frame_number == 0 && delta - duration >= 0.5) {
 844             av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
 845             delta = duration;
 846             ost->sync_opts = lrint(sync_ipts);
 847         }
 848     case VSYNC_CFR:
 849         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 850         if (delta < -1.1)
 851             nb_frames = 0;
 852         else if (delta > 1.1)
 853             nb_frames = lrintf(delta);
 854         break;
 855     case VSYNC_VFR:
 856         if (delta <= -0.6)
 857             nb_frames = 0;
 858         else if (delta > 0.6)
 859             ost->sync_opts = lrint(sync_ipts);
 860         break;
 861     case VSYNC_DROP:
 862     case VSYNC_PASSTHROUGH:
 863         ost->sync_opts = lrint(sync_ipts);
 864         break;
 865     default:
 866         av_assert0(0);
 867     }
 868
 869     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 870     if (nb_frames == 0) {
 871         nb_frames_drop++;
 872         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 873         return;
 874     } else if (nb_frames > 1) {
 875         if (nb_frames > dts_error_threshold * 30) {
 876             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 877             nb_frames_drop++;
 878             return;
 879         }
 880         nb_frames_dup += nb_frames - 1;
 881         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 882     }
 883
 884   /* duplicates frame if needed */
 885   for (i = 0; i < nb_frames; i++) {
 886     av_init_packet(&pkt);
 887     pkt.data = NULL;
 888     pkt.size = 0;
 889
 890     in_picture->pts = ost->sync_opts;
 891
 892 #if 1
 893     if (!check_recording_time(ost))
 894 #else
 895     if (ost->frame_number >= ost->max_frames)
 896 #endif
 897         return;
 898
 899     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 900         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 901         /* raw pictures are written as AVPicture structure to
 902            avoid any copies. We support temporarily the older
 903            method. */
 904         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 905         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 906         if (enc->coded_frame->interlaced_frame)
 907             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 908         else
 909             enc->field_order = AV_FIELD_PROGRESSIVE;
 910         pkt.data   = (uint8_t *)in_picture;
 911         pkt.size   =  sizeof(AVPicture);
 912         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 913         pkt.flags |= AV_PKT_FLAG_KEY;
 914
 915         video_size += pkt.size;
 916         write_frame(s, &pkt, ost);
 917     } else {
 918         int got_packet, forced_keyframe = 0;
 919         double pts_time;
 920
 921         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
 922             ost->top_field_first >= 0)
 923             in_picture->top_field_first = !!ost->top_field_first;
 924
 925         if (in_picture->interlaced_frame) {
 926             if (enc->codec->id == AV_CODEC_ID_MJPEG)
 927                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 928             else
 929                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 930         } else
 931             enc->field_order = AV_FIELD_PROGRESSIVE;
 932
 933         in_picture->quality = ost->st->codec->global_quality;
 934         if (!enc->me_threshold)
 935             in_picture->pict_type = 0;
 936
 937         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
 938             in_picture->pts * av_q2d(enc->time_base) : NAN;
 939         if (ost->forced_kf_index < ost->forced_kf_count &&
 940             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 941             ost->forced_kf_index++;
 942             forced_keyframe = 1;
 943         } else if (ost->forced_keyframes_pexpr) {
 944             double res;
 945             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
 946             res = av_expr_eval(ost->forced_keyframes_pexpr,
 947                                ost->forced_keyframes_expr_const_values, NULL);
 948             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
 949                     ost->forced_keyframes_expr_const_values[FKF_N],
 950                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
 951                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
 952                     ost->forced_keyframes_expr_const_values[FKF_T],
 953                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
 954                     res);
 955             if (res) {
 956                 forced_keyframe = 1;
 957                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
 958                     ost->forced_keyframes_expr_const_values[FKF_N];
 959                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
 960                     ost->forced_keyframes_expr_const_values[FKF_T];
 961                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
 962             }
 963
 964             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
 965         }
 966         if (forced_keyframe) {
 967             in_picture->pict_type = AV_PICTURE_TYPE_I;
 968             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
 969         }
 970
 971         update_benchmark(NULL);
 972         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
 973         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 974         if (ret < 0) {
 975             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 976             exit_program(1);
 977         }
 978
 979         if (got_packet) {
 980             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 981                 pkt.pts = ost->sync_opts;
 982
 983             if (pkt.pts != AV_NOPTS_VALUE)
 984                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 985             if (pkt.dts != AV_NOPTS_VALUE)
 986                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 987
 988             if (debug_ts) {
 989                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 990                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 991                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 992                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 993             }
 994
 995             frame_size = pkt.size;
 996             video_size += pkt.size;
 997             write_frame(s, &pkt, ost);
 998             av_free_packet(&pkt);
 999
1000             /* if two pass, output log */
1001             if (ost->logfile && enc->stats_out) {
1002                 fprintf(ost->logfile, "%s", enc->stats_out);
1003             }
1004         }
1005     }
1006     ost->sync_opts++;
1007     /*
1008      * For video, number of frames in == number of packets out.
1009      * But there may be reordering, so we can't throw away frames on encoder
1010      * flush, we need to limit them here, before they go into encoder.
1011      */
1012     ost->frame_number++;
1013
1014     if (vstats_filename && frame_size)
1015         do_video_stats(ost, frame_size);
1016   }
1017 }
1018
1019 static double psnr(double d)
1020 {
1021     return -10.0 * log(d) / log(10.0);
1022 }
1023
1024 static void do_video_stats(OutputStream *ost, int frame_size)
1025 {
1026     AVCodecContext *enc;
1027     int frame_number;
1028     double ti1, bitrate, avg_bitrate;
1029
1030     /* this is executed just the first time do_video_stats is called */
1031     if (!vstats_file) {
1032         vstats_file = fopen(vstats_filename, "w");
1033         if (!vstats_file) {
1034             perror("fopen");
1035             exit_program(1);
1036         }
1037     }
1038
1039     enc = ost->st->codec;
1040     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1041         frame_number = ost->st->nb_frames;
1042         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1043         if (enc->flags&CODEC_FLAG_PSNR)
1044             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1045
1046         fprintf(vstats_file,"f_size= %6d ", frame_size);
1047         /* compute pts value */
1048         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1049         if (ti1 < 0.01)
1050             ti1 = 0.01;
1051
1052         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1053         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1054         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1055                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1056         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1057     }
1058 }
1059
1060 /**
1061  * Get and encode new output from any of the filtergraphs, without causing
1062  * activity.
1063  *
1064  * @return  0 for success, <0 for severe errors
1065  */
1066 static int reap_filters(void)
1067 {
1068     AVFrame *filtered_frame = NULL;
1069     int i;
1070     int64_t frame_pts;
1071
1072     /* Reap all buffers present in the buffer sinks */
1073     for (i = 0; i < nb_output_streams; i++) {
1074         OutputStream *ost = output_streams[i];
1075         OutputFile    *of = output_files[ost->file_index];
1076         int ret = 0;
1077
1078         if (!ost->filter)
1079             continue;
1080
1081         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1082             return AVERROR(ENOMEM);
1083         }
1084         filtered_frame = ost->filtered_frame;
1085
1086         while (1) {
1087             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1088                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1089             if (ret < 0) {
1090                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1091                     av_log(NULL, AV_LOG_WARNING,
1092                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1093                 }
1094                 break;
1095             }
1096             if (ost->finished) {
1097                 av_frame_unref(filtered_frame);
1098                 continue;
1099             }
1100             frame_pts = AV_NOPTS_VALUE;
1101             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1102                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1103                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1104                                                 ost->filter->filter->inputs[0]->time_base,
1105                                                 ost->st->codec->time_base) -
1106                                     av_rescale_q(start_time,
1107                                                 AV_TIME_BASE_Q,
1108                                                 ost->st->codec->time_base);
1109             }
1110             //if (ost->source_index >= 0)
1111             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1112
1113
1114             switch (ost->filter->filter->inputs[0]->type) {
1115             case AVMEDIA_TYPE_VIDEO:
1116                 filtered_frame->pts = frame_pts;
1117                 if (!ost->frame_aspect_ratio.num)
1118                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1119
1120                 do_video_out(of->ctx, ost, filtered_frame);
1121                 break;
1122             case AVMEDIA_TYPE_AUDIO:
1123                 filtered_frame->pts = frame_pts;
1124                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1125                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1126                     av_log(NULL, AV_LOG_ERROR,
1127                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1128                     break;
1129                 }
1130                 do_audio_out(of->ctx, ost, filtered_frame);
1131                 break;
1132             default:
1133                 // TODO support subtitle filters
1134                 av_assert0(0);
1135             }
1136
1137             av_frame_unref(filtered_frame);
1138         }
1139     }
1140
1141     return 0;
1142 }
1143
1144 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1145 {
1146     char buf[1024];
1147     AVBPrint buf_script;
1148     OutputStream *ost;
1149     AVFormatContext *oc;
1150     int64_t total_size;
1151     AVCodecContext *enc;
1152     int frame_number, vid, i;
1153     double bitrate;
1154     int64_t pts = INT64_MIN;
1155     static int64_t last_time = -1;
1156     static int qp_histogram[52];
1157     int hours, mins, secs, us;
1158
1159     if (!print_stats && !is_last_report && !progress_avio)
1160         return;
1161
1162     if (!is_last_report) {
1163         if (last_time == -1) {
1164             last_time = cur_time;
1165             return;
1166         }
1167         if ((cur_time - last_time) < 500000)
1168             return;
1169         last_time = cur_time;
1170     }
1171
1172
1173     oc = output_files[0]->ctx;
1174
1175     total_size = avio_size(oc->pb);
1176     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1177         total_size = avio_tell(oc->pb);
1178
1179     buf[0] = '\0';
1180     vid = 0;
1181     av_bprint_init(&buf_script, 0, 1);
1182     for (i = 0; i < nb_output_streams; i++) {
1183         float q = -1;
1184         ost = output_streams[i];
1185         enc = ost->st->codec;
1186         if (!ost->stream_copy && enc->coded_frame)
1187             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1188         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1189             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1190             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1191                        ost->file_index, ost->index, q);
1192         }
1193         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1194             float fps, t = (cur_time-timer_start) / 1000000.0;
1195
1196             frame_number = ost->frame_number;
1197             fps = t > 1 ? frame_number / t : 0;
1198             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1199                      frame_number, fps < 9.95, fps, q);
1200             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1201             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1202             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1203                        ost->file_index, ost->index, q);
1204             if (is_last_report)
1205                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1206             if (qp_hist) {
1207                 int j;
1208                 int qp = lrintf(q);
1209                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1210                     qp_histogram[qp]++;
1211                 for (j = 0; j < 32; j++)
1212                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1213             }
1214             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1215                 int j;
1216                 double error, error_sum = 0;
1217                 double scale, scale_sum = 0;
1218                 double p;
1219                 char type[3] = { 'Y','U','V' };
1220                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1221                 for (j = 0; j < 3; j++) {
1222                     if (is_last_report) {
1223                         error = enc->error[j];
1224                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1225                     } else {
1226                         error = enc->coded_frame->error[j];
1227                         scale = enc->width * enc->height * 255.0 * 255.0;
1228                     }
1229                     if (j)
1230                         scale /= 4;
1231                     error_sum += error;
1232                     scale_sum += scale;
1233                     p = psnr(error / scale);
1234                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1235                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1236                                ost->file_index, ost->index, type[j] | 32, p);
1237                 }
1238                 p = psnr(error_sum / scale_sum);
1239                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1240                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1241                            ost->file_index, ost->index, p);
1242             }
1243             vid = 1;
1244         }
1245         /* compute min output value */
1246         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1247             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1248                                           ost->st->time_base, AV_TIME_BASE_Q));
1249     }
1250
1251     secs = pts / AV_TIME_BASE;
1252     us = pts % AV_TIME_BASE;
1253     mins = secs / 60;
1254     secs %= 60;
1255     hours = mins / 60;
1256     mins %= 60;
1257
1258     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1259
1260     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1261                                  "size=N/A time=");
1262     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1263                                  "size=%8.0fkB time=", total_size / 1024.0);
1264     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1265              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1266              (100 * us) / AV_TIME_BASE);
1267     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1268                               "bitrate=N/A");
1269     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1270                               "bitrate=%6.1fkbits/s", bitrate);
1271     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1272     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1273     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1274     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1275                hours, mins, secs, us);
1276
1277     if (nb_frames_dup || nb_frames_drop)
1278         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1279                 nb_frames_dup, nb_frames_drop);
1280     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1281     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1282
1283     if (print_stats || is_last_report) {
1284         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1285             fprintf(stderr, "%s    \r", buf);
1286         } else
1287             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1288
1289     fflush(stderr);
1290     }
1291
1292     if (progress_avio) {
1293         av_bprintf(&buf_script, "progress=%s\n",
1294                    is_last_report ? "end" : "continue");
1295         avio_write(progress_avio, buf_script.str,
1296                    FFMIN(buf_script.len, buf_script.size - 1));
1297         avio_flush(progress_avio);
1298         av_bprint_finalize(&buf_script, NULL);
1299         if (is_last_report) {
1300             avio_close(progress_avio);
1301             progress_avio = NULL;
1302         }
1303     }
1304
1305     if (is_last_report) {
1306         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1307         av_log(NULL, AV_LOG_INFO, "\n");
1308         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1309                video_size / 1024.0,
1310                audio_size / 1024.0,
1311                subtitle_size / 1024.0,
1312                extra_size / 1024.0,
1313                100.0 * (total_size - raw) / raw
1314         );
1315         if(video_size + audio_size + subtitle_size + extra_size == 0){
1316             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1317         }
1318     }
1319 }
1320
1321 static void flush_encoders(void)
1322 {
1323     int i, ret;
1324
1325     for (i = 0; i < nb_output_streams; i++) {
1326         OutputStream   *ost = output_streams[i];
1327         AVCodecContext *enc = ost->st->codec;
1328         AVFormatContext *os = output_files[ost->file_index]->ctx;
1329         int stop_encoding = 0;
1330
1331         if (!ost->encoding_needed)
1332             continue;
1333
1334         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1335             continue;
1336         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1337             continue;
1338
1339         for (;;) {
1340             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1341             const char *desc;
1342             int64_t *size;
1343
1344             switch (ost->st->codec->codec_type) {
1345             case AVMEDIA_TYPE_AUDIO:
1346                 encode = avcodec_encode_audio2;
1347                 desc   = "Audio";
1348                 size   = &audio_size;
1349                 break;
1350             case AVMEDIA_TYPE_VIDEO:
1351                 encode = avcodec_encode_video2;
1352                 desc   = "Video";
1353                 size   = &video_size;
1354                 break;
1355             default:
1356                 stop_encoding = 1;
1357             }
1358
1359             if (encode) {
1360                 AVPacket pkt;
1361                 int got_packet;
1362                 av_init_packet(&pkt);
1363                 pkt.data = NULL;
1364                 pkt.size = 0;
1365
1366                 update_benchmark(NULL);
1367                 ret = encode(enc, &pkt, NULL, &got_packet);
1368                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1369                 if (ret < 0) {
1370                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1371                     exit_program(1);
1372                 }
1373                 *size += pkt.size;
1374                 if (ost->logfile && enc->stats_out) {
1375                     fprintf(ost->logfile, "%s", enc->stats_out);
1376                 }
1377                 if (!got_packet) {
1378                     stop_encoding = 1;
1379                     break;
1380                 }
1381                 if (pkt.pts != AV_NOPTS_VALUE)
1382                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1383                 if (pkt.dts != AV_NOPTS_VALUE)
1384                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1385                 if (pkt.duration > 0)
1386                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1387                 write_frame(os, &pkt, ost);
1388                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1389                     do_video_stats(ost, pkt.size);
1390                 }
1391             }
1392
1393             if (stop_encoding)
1394                 break;
1395         }
1396     }
1397 }
1398
1399 /*
1400  * Check whether a packet from ist should be written into ost at this time
1401  */
1402 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1403 {
1404     OutputFile *of = output_files[ost->file_index];
1405     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1406
1407     if (ost->source_index != ist_index)
1408         return 0;
1409
1410     if (ost->finished)
1411         return 0;
1412
1413     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1414         return 0;
1415
1416     return 1;
1417 }
1418
1419 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1420 {
1421     OutputFile *of = output_files[ost->file_index];
1422     InputFile   *f = input_files [ist->file_index];
1423     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1424     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1425     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1426     AVPicture pict;
1427     AVPacket opkt;
1428
1429     av_init_packet(&opkt);
1430
1431     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1432         !ost->copy_initial_nonkeyframes)
1433         return;
1434
1435     if (pkt->pts == AV_NOPTS_VALUE) {
1436         if (!ost->frame_number && ist->pts < start_time &&
1437             !ost->copy_prior_start)
1438             return;
1439     } else {
1440         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1441             !ost->copy_prior_start)
1442             return;
1443     }
1444
1445     if (of->recording_time != INT64_MAX &&
1446         ist->pts >= of->recording_time + start_time) {
1447         close_output_stream(ost);
1448         return;
1449     }
1450
1451     if (f->recording_time != INT64_MAX) {
1452         start_time = f->ctx->start_time;
1453         if (f->start_time != AV_NOPTS_VALUE)
1454             start_time += f->start_time;
1455         if (ist->pts >= f->recording_time + start_time) {
1456             close_output_stream(ost);
1457             return;
1458         }
1459     }
1460
1461     /* force the input stream PTS */
1462     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1463         audio_size += pkt->size;
1464     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1465         video_size += pkt->size;
1466         ost->sync_opts++;
1467     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1468         subtitle_size += pkt->size;
1469     }
1470
1471     if (pkt->pts != AV_NOPTS_VALUE)
1472         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1473     else
1474         opkt.pts = AV_NOPTS_VALUE;
1475
1476     if (pkt->dts == AV_NOPTS_VALUE)
1477         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1478     else
1479         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1480     opkt.dts -= ost_tb_start_time;
1481
1482     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1483         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1484         if(!duration)
1485             duration = ist->st->codec->frame_size;
1486         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1487                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1488                                                ost->st->time_base) - ost_tb_start_time;
1489     }
1490
1491     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1492     opkt.flags    = pkt->flags;
1493
1494     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1495     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1496        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1497        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1498        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1499        ) {
1500         if (av_parser_change(ost->parser, ost->st->codec,
1501                              &opkt.data, &opkt.size,
1502                              pkt->data, pkt->size,
1503                              pkt->flags & AV_PKT_FLAG_KEY)) {
1504             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1505             if (!opkt.buf)
1506                 exit_program(1);
1507         }
1508     } else {
1509         opkt.data = pkt->data;
1510         opkt.size = pkt->size;
1511     }
1512     av_copy_packet_side_data(&opkt, pkt);
1513
1514     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1515         /* store AVPicture in AVPacket, as expected by the output format */
1516         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1517         opkt.data = (uint8_t *)&pict;
1518         opkt.size = sizeof(AVPicture);
1519         opkt.flags |= AV_PKT_FLAG_KEY;
1520     }
1521
1522     write_frame(of->ctx, &opkt, ost);
1523     ost->st->codec->frame_number++;
1524 }
1525
1526 int guess_input_channel_layout(InputStream *ist)
1527 {
1528     AVCodecContext *dec = ist->st->codec;
1529
1530     if (!dec->channel_layout) {
1531         char layout_name[256];
1532
1533         if (dec->channels > ist->guess_layout_max)
1534             return 0;
1535         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1536         if (!dec->channel_layout)
1537             return 0;
1538         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1539                                      dec->channels, dec->channel_layout);
1540         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1541                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1542     }
1543     return 1;
1544 }
1545
1546 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1547 {
1548     AVFrame *decoded_frame, *f;
1549     AVCodecContext *avctx = ist->st->codec;
1550     int i, ret, err = 0, resample_changed;
1551     AVRational decoded_frame_tb;
1552
1553     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1554         return AVERROR(ENOMEM);
1555     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1556         return AVERROR(ENOMEM);
1557     decoded_frame = ist->decoded_frame;
1558
1559     update_benchmark(NULL);
1560     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1561     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1562
1563     if (ret >= 0 && avctx->sample_rate <= 0) {
1564         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1565         ret = AVERROR_INVALIDDATA;
1566     }
1567
1568     if (*got_output || ret<0 || pkt->size)
1569         decode_error_stat[ret<0] ++;
1570
1571     if (!*got_output || ret < 0) {
1572         if (!pkt->size) {
1573             for (i = 0; i < ist->nb_filters; i++)
1574 #if 1
1575                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1576 #else
1577                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1578 #endif
1579         }
1580         return ret;
1581     }
1582
1583 #if 1
1584     /* increment next_dts to use for the case where the input stream does not
1585        have timestamps or there are multiple frames in the packet */
1586     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1587                      avctx->sample_rate;
1588     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1589                      avctx->sample_rate;
1590 #endif
1591
1592     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1593                        ist->resample_channels       != avctx->channels               ||
1594                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1595                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1596     if (resample_changed) {
1597         char layout1[64], layout2[64];
1598
1599         if (!guess_input_channel_layout(ist)) {
1600             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1601                    "layout for Input Stream #%d.%d\n", ist->file_index,
1602                    ist->st->index);
1603             exit_program(1);
1604         }
1605         decoded_frame->channel_layout = avctx->channel_layout;
1606
1607         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1608                                      ist->resample_channel_layout);
1609         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1610                                      decoded_frame->channel_layout);
1611
1612         av_log(NULL, AV_LOG_INFO,
1613                "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
1614                ist->file_index, ist->st->index,
1615                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1616                ist->resample_channels, layout1,
1617                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1618                avctx->channels, layout2);
1619
1620         ist->resample_sample_fmt     = decoded_frame->format;
1621         ist->resample_sample_rate    = decoded_frame->sample_rate;
1622         ist->resample_channel_layout = decoded_frame->channel_layout;
1623         ist->resample_channels       = avctx->channels;
1624
1625         for (i = 0; i < nb_filtergraphs; i++)
1626             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1627                 FilterGraph *fg = filtergraphs[i];
1628                 int j;
1629                 if (configure_filtergraph(fg) < 0) {
1630                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1631                     exit_program(1);
1632                 }
1633                 for (j = 0; j < fg->nb_outputs; j++) {
1634                     OutputStream *ost = fg->outputs[j]->ost;
1635                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1636                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1637                         av_buffersink_set_frame_size(ost->filter->filter,
1638                                                      ost->st->codec->frame_size);
1639                 }
1640             }
1641     }
1642
1643     /* if the decoder provides a pts, use it instead of the last packet pts.
1644        the decoder could be delaying output by a packet or more. */
1645     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1646         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1647         decoded_frame_tb   = avctx->time_base;
1648     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1649         decoded_frame->pts = decoded_frame->pkt_pts;
1650         pkt->pts           = AV_NOPTS_VALUE;
1651         decoded_frame_tb   = ist->st->time_base;
1652     } else if (pkt->pts != AV_NOPTS_VALUE) {
1653         decoded_frame->pts = pkt->pts;
1654         pkt->pts           = AV_NOPTS_VALUE;
1655         decoded_frame_tb   = ist->st->time_base;
1656     }else {
1657         decoded_frame->pts = ist->dts;
1658         decoded_frame_tb   = AV_TIME_BASE_Q;
1659     }
1660     if (decoded_frame->pts != AV_NOPTS_VALUE)
1661         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1662                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1663                                               (AVRational){1, ist->st->codec->sample_rate});
1664     for (i = 0; i < ist->nb_filters; i++) {
1665         if (i < ist->nb_filters - 1) {
1666             f = ist->filter_frame;
1667             err = av_frame_ref(f, decoded_frame);
1668             if (err < 0)
1669                 break;
1670         } else
1671             f = decoded_frame;
1672         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1673                                      AV_BUFFERSRC_FLAG_PUSH);
1674         if (err == AVERROR_EOF)
1675             err = 0; /* ignore */
1676         if (err < 0)
1677             break;
1678     }
1679     decoded_frame->pts = AV_NOPTS_VALUE;
1680
1681     av_frame_unref(ist->filter_frame);
1682     av_frame_unref(decoded_frame);
1683     return err < 0 ? err : ret;
1684 }
1685
1686 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1687 {
1688     AVFrame *decoded_frame, *f;
1689     int i, ret = 0, err = 0, resample_changed;
1690     int64_t best_effort_timestamp;
1691     AVRational *frame_sample_aspect;
1692
1693     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1694         return AVERROR(ENOMEM);
1695     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1696         return AVERROR(ENOMEM);
1697     decoded_frame = ist->decoded_frame;
1698     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1699
1700     update_benchmark(NULL);
1701     ret = avcodec_decode_video2(ist->st->codec,
1702                                 decoded_frame, got_output, pkt);
1703     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1704
1705     if (*got_output || ret<0 || pkt->size)
1706         decode_error_stat[ret<0] ++;
1707
1708     if (!*got_output || ret < 0) {
1709         if (!pkt->size) {
1710             for (i = 0; i < ist->nb_filters; i++)
1711 #if 1
1712                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1713 #else
1714                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1715 #endif
1716         }
1717         return ret;
1718     }
1719
1720     if(ist->top_field_first>=0)
1721         decoded_frame->top_field_first = ist->top_field_first;
1722
1723     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1724         err = ist->hwaccel_retrieve_data(ist->st->codec, decoded_frame);
1725         if (err < 0)
1726             goto fail;
1727     }
1728     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1729
1730     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1731     if(best_effort_timestamp != AV_NOPTS_VALUE)
1732         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1733
1734     if (debug_ts) {
1735         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1736                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1737                 ist->st->index, av_ts2str(decoded_frame->pts),
1738                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1739                 best_effort_timestamp,
1740                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1741                 decoded_frame->key_frame, decoded_frame->pict_type);
1742     }
1743
1744     pkt->size = 0;
1745
1746     if (ist->st->sample_aspect_ratio.num)
1747         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1748
1749     resample_changed = ist->resample_width   != decoded_frame->width  ||
1750                        ist->resample_height  != decoded_frame->height ||
1751                        ist->resample_pix_fmt != decoded_frame->format;
1752     if (resample_changed) {
1753         av_log(NULL, AV_LOG_INFO,
1754                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1755                ist->file_index, ist->st->index,
1756                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1757                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1758
1759         ist->resample_width   = decoded_frame->width;
1760         ist->resample_height  = decoded_frame->height;
1761         ist->resample_pix_fmt = decoded_frame->format;
1762
1763         for (i = 0; i < nb_filtergraphs; i++) {
1764             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1765                 configure_filtergraph(filtergraphs[i]) < 0) {
1766                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1767                 exit_program(1);
1768             }
1769         }
1770     }
1771
1772     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1773     for (i = 0; i < ist->nb_filters; i++) {
1774         if (!frame_sample_aspect->num)
1775             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1776
1777         if (i < ist->nb_filters - 1) {
1778             f = ist->filter_frame;
1779             err = av_frame_ref(f, decoded_frame);
1780             if (err < 0)
1781                 break;
1782         } else
1783             f = decoded_frame;
1784         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1785         if (ret == AVERROR_EOF) {
1786             ret = 0; /* ignore */
1787         } else if (ret < 0) {
1788             av_log(NULL, AV_LOG_FATAL,
1789                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1790             exit_program(1);
1791         }
1792     }
1793
1794 fail:
1795     av_frame_unref(ist->filter_frame);
1796     av_frame_unref(decoded_frame);
1797     return err < 0 ? err : ret;
1798 }
1799
1800 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1801 {
1802     AVSubtitle subtitle;
1803     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1804                                           &subtitle, got_output, pkt);
1805
1806     if (*got_output || ret<0 || pkt->size)
1807         decode_error_stat[ret<0] ++;
1808
1809     if (ret < 0 || !*got_output) {
1810         if (!pkt->size)
1811             sub2video_flush(ist);
1812         return ret;
1813     }
1814
1815     if (ist->fix_sub_duration) {
1816         int end = 1;
1817         if (ist->prev_sub.got_output) {
1818             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1819                              1000, AV_TIME_BASE);
1820             if (end < ist->prev_sub.subtitle.end_display_time) {
1821                 av_log(ist->st->codec, AV_LOG_DEBUG,
1822                        "Subtitle duration reduced from %d to %d%s\n",
1823                        ist->prev_sub.subtitle.end_display_time, end,
1824                        end <= 0 ? ", dropping it" : "");
1825                 ist->prev_sub.subtitle.end_display_time = end;
1826             }
1827         }
1828         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1829         FFSWAP(int,        ret,         ist->prev_sub.ret);
1830         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1831         if (end <= 0)
1832             goto out;
1833     }
1834
1835     if (!*got_output)
1836         return ret;
1837
1838     sub2video_update(ist, &subtitle);
1839
1840     if (!subtitle.num_rects)
1841         goto out;
1842
1843     for (i = 0; i < nb_output_streams; i++) {
1844         OutputStream *ost = output_streams[i];
1845
1846         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1847             continue;
1848
1849         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1850     }
1851
1852 out:
1853     avsubtitle_free(&subtitle);
1854     return ret;
1855 }
1856
1857 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1858 static int output_packet(InputStream *ist, const AVPacket *pkt)
1859 {
1860     int ret = 0, i;
1861     int got_output = 0;
1862
1863     AVPacket avpkt;
1864     if (!ist->saw_first_ts) {
1865         ist->dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
1866         ist->pts = 0;
1867         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1868             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1869             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1870         }
1871         ist->saw_first_ts = 1;
1872     }
1873
1874     if (ist->next_dts == AV_NOPTS_VALUE)
1875         ist->next_dts = ist->dts;
1876     if (ist->next_pts == AV_NOPTS_VALUE)
1877         ist->next_pts = ist->pts;
1878
1879     if (pkt == NULL) {
1880         /* EOF handling */
1881         av_init_packet(&avpkt);
1882         avpkt.data = NULL;
1883         avpkt.size = 0;
1884         goto handle_eof;
1885     } else {
1886         avpkt = *pkt;
1887     }
1888
1889     if (pkt->dts != AV_NOPTS_VALUE) {
1890         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1891         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1892             ist->next_pts = ist->pts = ist->dts;
1893     }
1894
1895     // while we have more to decode or while the decoder did output something on EOF
1896     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1897         int duration;
1898     handle_eof:
1899
1900         ist->pts = ist->next_pts;
1901         ist->dts = ist->next_dts;
1902
1903         if (avpkt.size && avpkt.size != pkt->size) {
1904             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1905                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1906             ist->showed_multi_packet_warning = 1;
1907         }
1908
1909         switch (ist->st->codec->codec_type) {
1910         case AVMEDIA_TYPE_AUDIO:
1911             ret = decode_audio    (ist, &avpkt, &got_output);
1912             break;
1913         case AVMEDIA_TYPE_VIDEO:
1914             ret = decode_video    (ist, &avpkt, &got_output);
1915             if (avpkt.duration) {
1916                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1917             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1918                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1919                 duration = ((int64_t)AV_TIME_BASE *
1920                                 ist->st->codec->time_base.num * ticks) /
1921                                 ist->st->codec->time_base.den;
1922             } else
1923                 duration = 0;
1924
1925             if(ist->dts != AV_NOPTS_VALUE && duration) {
1926                 ist->next_dts += duration;
1927             }else
1928                 ist->next_dts = AV_NOPTS_VALUE;
1929
1930             if (got_output)
1931                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1932             break;
1933         case AVMEDIA_TYPE_SUBTITLE:
1934             ret = transcode_subtitles(ist, &avpkt, &got_output);
1935             break;
1936         default:
1937             return -1;
1938         }
1939
1940         if (ret < 0)
1941             return ret;
1942
1943         avpkt.dts=
1944         avpkt.pts= AV_NOPTS_VALUE;
1945
1946         // touch data and size only if not EOF
1947         if (pkt) {
1948             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1949                 ret = avpkt.size;
1950             avpkt.data += ret;
1951             avpkt.size -= ret;
1952         }
1953         if (!got_output) {
1954             continue;
1955         }
1956     }
1957
1958     /* handle stream copy */
1959     if (!ist->decoding_needed) {
1960         ist->dts = ist->next_dts;
1961         switch (ist->st->codec->codec_type) {
1962         case AVMEDIA_TYPE_AUDIO:
1963             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1964                              ist->st->codec->sample_rate;
1965             break;
1966         case AVMEDIA_TYPE_VIDEO:
1967             if (ist->framerate.num) {
1968                 // TODO: Remove work-around for c99-to-c89 issue 7
1969                 AVRational time_base_q = AV_TIME_BASE_Q;
1970                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1971                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1972             } else if (pkt->duration) {
1973                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1974             } else if(ist->st->codec->time_base.num != 0) {
1975                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1976                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1977                                   ist->st->codec->time_base.num * ticks) /
1978                                   ist->st->codec->time_base.den;
1979             }
1980             break;
1981         }
1982         ist->pts = ist->dts;
1983         ist->next_pts = ist->next_dts;
1984     }
1985     for (i = 0; pkt && i < nb_output_streams; i++) {
1986         OutputStream *ost = output_streams[i];
1987
1988         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1989             continue;
1990
1991         do_streamcopy(ist, ost, pkt);
1992     }
1993
1994     return 0;
1995 }
1996
1997 static void print_sdp(void)
1998 {
1999     char sdp[16384];
2000     int i;
2001     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2002
2003     if (!avc)
2004         exit_program(1);
2005     for (i = 0; i < nb_output_files; i++)
2006         avc[i] = output_files[i]->ctx;
2007
2008     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2009     printf("SDP:\n%s\n", sdp);
2010     fflush(stdout);
2011     av_freep(&avc);
2012 }
2013
2014 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
2015 {
2016     int i;
2017     for (i = 0; hwaccels[i].name; i++)
2018         if (hwaccels[i].pix_fmt == pix_fmt)
2019             return &hwaccels[i];
2020     return NULL;
2021 }
2022
2023 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2024 {
2025     InputStream *ist = s->opaque;
2026     const enum AVPixelFormat *p;
2027     int ret;
2028
2029     for (p = pix_fmts; *p != -1; p++) {
2030         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2031         const HWAccel *hwaccel;
2032
2033         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2034             break;
2035
2036         hwaccel = get_hwaccel(*p);
2037         if (!hwaccel ||
2038             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2039             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2040             continue;
2041
2042         ret = hwaccel->init(s);
2043         if (ret < 0) {
2044             if (ist->hwaccel_id == hwaccel->id) {
2045                 av_log(NULL, AV_LOG_FATAL,
2046                        "%s hwaccel requested for input stream #%d:%d, "
2047                        "but cannot be initialized.\n", hwaccel->name,
2048                        ist->file_index, ist->st->index);
2049                 exit_program(1);
2050             }
2051             continue;
2052         }
2053         ist->active_hwaccel_id = hwaccel->id;
2054         ist->hwaccel_pix_fmt   = *p;
2055         break;
2056     }
2057
2058     return *p;
2059 }
2060
2061 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
2062 {
2063     InputStream *ist = s->opaque;
2064
2065     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2066         return ist->hwaccel_get_buffer(s, frame, flags);
2067
2068     return avcodec_default_get_buffer2(s, frame, flags);
2069 }
2070
2071 static int init_input_stream(int ist_index, char *error, int error_len)
2072 {
2073     int ret;
2074     InputStream *ist = input_streams[ist_index];
2075
2076     if (ist->decoding_needed) {
2077         AVCodec *codec = ist->dec;
2078         if (!codec) {
2079             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2080                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2081             return AVERROR(EINVAL);
2082         }
2083
2084         ist->st->codec->opaque      = ist;
2085         ist->st->codec->get_format  = get_format;
2086         ist->st->codec->get_buffer2 = get_buffer;
2087         ist->st->codec->thread_safe_callbacks = 1;
2088
2089         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
2090
2091         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2092             av_dict_set(&ist->opts, "threads", "auto", 0);
2093         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
2094             char errbuf[128];
2095             if (ret == AVERROR_EXPERIMENTAL)
2096                 abort_codec_experimental(codec, 0);
2097
2098             av_strerror(ret, errbuf, sizeof(errbuf));
2099
2100             snprintf(error, error_len,
2101                      "Error while opening decoder for input stream "
2102                      "#%d:%d : %s",
2103                      ist->file_index, ist->st->index, errbuf);
2104             return ret;
2105         }
2106         assert_avoptions(ist->opts);
2107     }
2108
2109     ist->next_pts = AV_NOPTS_VALUE;
2110     ist->next_dts = AV_NOPTS_VALUE;
2111     ist->is_start = 1;
2112
2113     return 0;
2114 }
2115
2116 static InputStream *get_input_stream(OutputStream *ost)
2117 {
2118     if (ost->source_index >= 0)
2119         return input_streams[ost->source_index];
2120     return NULL;
2121 }
2122
2123 static int compare_int64(const void *a, const void *b)
2124 {
2125     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2126     return va < vb ? -1 : va > vb ? +1 : 0;
2127 }
2128
2129 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2130                                     AVCodecContext *avctx)
2131 {
2132     char *p;
2133     int n = 1, i, size, index = 0;
2134     int64_t t, *pts;
2135
2136     for (p = kf; *p; p++)
2137         if (*p == ',')
2138             n++;
2139     size = n;
2140     pts = av_malloc(sizeof(*pts) * size);
2141     if (!pts) {
2142         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2143         exit_program(1);
2144     }
2145
2146     p = kf;
2147     for (i = 0; i < n; i++) {
2148         char *next = strchr(p, ',');
2149
2150         if (next)
2151             *next++ = 0;
2152
2153         if (!memcmp(p, "chapters", 8)) {
2154
2155             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2156             int j;
2157
2158             if (avf->nb_chapters > INT_MAX - size ||
2159                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2160                                      sizeof(*pts)))) {
2161                 av_log(NULL, AV_LOG_FATAL,
2162                        "Could not allocate forced key frames array.\n");
2163                 exit_program(1);
2164             }
2165             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2166             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2167
2168             for (j = 0; j < avf->nb_chapters; j++) {
2169                 AVChapter *c = avf->chapters[j];
2170                 av_assert1(index < size);
2171                 pts[index++] = av_rescale_q(c->start, c->time_base,
2172                                             avctx->time_base) + t;
2173             }
2174
2175         } else {
2176
2177             t = parse_time_or_die("force_key_frames", p, 1);
2178             av_assert1(index < size);
2179             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2180
2181         }
2182
2183         p = next;
2184     }
2185
2186     av_assert0(index == size);
2187     qsort(pts, size, sizeof(*pts), compare_int64);
2188     ost->forced_kf_count = size;
2189     ost->forced_kf_pts   = pts;
2190 }
2191
2192 static void report_new_stream(int input_index, AVPacket *pkt)
2193 {
2194     InputFile *file = input_files[input_index];
2195     AVStream *st = file->ctx->streams[pkt->stream_index];
2196
2197     if (pkt->stream_index < file->nb_streams_warn)
2198         return;
2199     av_log(file->ctx, AV_LOG_WARNING,
2200            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2201            av_get_media_type_string(st->codec->codec_type),
2202            input_index, pkt->stream_index,
2203            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2204     file->nb_streams_warn = pkt->stream_index + 1;
2205 }
2206
2207 static int transcode_init(void)
2208 {
2209     int ret = 0, i, j, k;
2210     AVFormatContext *oc;
2211     AVCodecContext *codec;
2212     OutputStream *ost;
2213     InputStream *ist;
2214     char error[1024];
2215     int want_sdp = 1;
2216
2217     for (i = 0; i < nb_filtergraphs; i++) {
2218         FilterGraph *fg = filtergraphs[i];
2219         for (j = 0; j < fg->nb_outputs; j++) {
2220             OutputFilter *ofilter = fg->outputs[j];
2221             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2222                 continue;
2223             if (fg->nb_inputs != 1)
2224                 continue;
2225             for (k = nb_input_streams-1; k >= 0 ; k--)
2226                 if (fg->inputs[0]->ist == input_streams[k])
2227                     break;
2228             ofilter->ost->source_index = k;
2229         }
2230     }
2231
2232     /* init framerate emulation */
2233     for (i = 0; i < nb_input_files; i++) {
2234         InputFile *ifile = input_files[i];
2235         if (ifile->rate_emu)
2236             for (j = 0; j < ifile->nb_streams; j++)
2237                 input_streams[j + ifile->ist_index]->start = av_gettime();
2238     }
2239
2240     /* output stream init */
2241     for (i = 0; i < nb_output_files; i++) {
2242         oc = output_files[i]->ctx;
2243         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2244             av_dump_format(oc, i, oc->filename, 1);
2245             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2246             return AVERROR(EINVAL);
2247         }
2248     }
2249
2250     /* init complex filtergraphs */
2251     for (i = 0; i < nb_filtergraphs; i++)
2252         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2253             return ret;
2254
2255     /* for each output stream, we compute the right encoding parameters */
2256     for (i = 0; i < nb_output_streams; i++) {
2257         AVCodecContext *icodec = NULL;
2258         ost = output_streams[i];
2259         oc  = output_files[ost->file_index]->ctx;
2260         ist = get_input_stream(ost);
2261
2262         if (ost->attachment_filename)
2263             continue;
2264
2265         codec  = ost->st->codec;
2266
2267         if (ist) {
2268             icodec = ist->st->codec;
2269
2270             ost->st->disposition          = ist->st->disposition;
2271             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2272             codec->chroma_sample_location = icodec->chroma_sample_location;
2273         } else {
2274             for (j=0; j<oc->nb_streams; j++) {
2275                 AVStream *st = oc->streams[j];
2276                 if (st != ost->st && st->codec->codec_type == codec->codec_type)
2277                     break;
2278             }
2279             if (j == oc->nb_streams)
2280                 if (codec->codec_type == AVMEDIA_TYPE_AUDIO || codec->codec_type == AVMEDIA_TYPE_VIDEO)
2281                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2282         }
2283
2284         if (ost->stream_copy) {
2285             AVRational sar;
2286             uint64_t extra_size;
2287
2288             av_assert0(ist && !ost->filter);
2289
2290             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2291
2292             if (extra_size > INT_MAX) {
2293                 return AVERROR(EINVAL);
2294             }
2295
2296             /* if stream_copy is selected, no need to decode or encode */
2297             codec->codec_id   = icodec->codec_id;
2298             codec->codec_type = icodec->codec_type;
2299
2300             if (!codec->codec_tag) {
2301                 unsigned int codec_tag;
2302                 if (!oc->oformat->codec_tag ||
2303                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2304                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2305                     codec->codec_tag = icodec->codec_tag;
2306             }
2307
2308             codec->bit_rate       = icodec->bit_rate;
2309             codec->rc_max_rate    = icodec->rc_max_rate;
2310             codec->rc_buffer_size = icodec->rc_buffer_size;
2311             codec->field_order    = icodec->field_order;
2312             codec->extradata      = av_mallocz(extra_size);
2313             if (!codec->extradata) {
2314                 return AVERROR(ENOMEM);
2315             }
2316             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2317             codec->extradata_size= icodec->extradata_size;
2318             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2319
2320             codec->time_base = ist->st->time_base;
2321             /*
2322              * Avi is a special case here because it supports variable fps but
2323              * having the fps and timebase differe significantly adds quite some
2324              * overhead
2325              */
2326             if(!strcmp(oc->oformat->name, "avi")) {
2327                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2328                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2329                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2330                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2331                      || copy_tb==2){
2332                     codec->time_base.num = ist->st->r_frame_rate.den;
2333                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2334                     codec->ticks_per_frame = 2;
2335                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2336                                  && av_q2d(ist->st->time_base) < 1.0/500
2337                     || copy_tb==0){
2338                     codec->time_base = icodec->time_base;
2339                     codec->time_base.num *= icodec->ticks_per_frame;
2340                     codec->time_base.den *= 2;
2341                     codec->ticks_per_frame = 2;
2342                 }
2343             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2344                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2345                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2346                       && strcmp(oc->oformat->name, "f4v")
2347             ) {
2348                 if(   copy_tb<0 && icodec->time_base.den
2349                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2350                                 && av_q2d(ist->st->time_base) < 1.0/500
2351                    || copy_tb==0){
2352                     codec->time_base = icodec->time_base;
2353                     codec->time_base.num *= icodec->ticks_per_frame;
2354                 }
2355             }
2356             if (   codec->codec_tag == AV_RL32("tmcd")
2357                 && icodec->time_base.num < icodec->time_base.den
2358                 && icodec->time_base.num > 0
2359                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2360                 codec->time_base = icodec->time_base;
2361             }
2362
2363             if (ist && !ost->frame_rate.num)
2364                 ost->frame_rate = ist->framerate;
2365             if(ost->frame_rate.num)
2366                 codec->time_base = av_inv_q(ost->frame_rate);
2367
2368             av_reduce(&codec->time_base.num, &codec->time_base.den,
2369                         codec->time_base.num, codec->time_base.den, INT_MAX);
2370
2371             ost->parser = av_parser_init(codec->codec_id);
2372
2373             switch (codec->codec_type) {
2374             case AVMEDIA_TYPE_AUDIO:
2375                 if (audio_volume != 256) {
2376                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2377                     exit_program(1);
2378                 }
2379                 codec->channel_layout     = icodec->channel_layout;
2380                 codec->sample_rate        = icodec->sample_rate;
2381                 codec->channels           = icodec->channels;
2382                 codec->frame_size         = icodec->frame_size;
2383                 codec->audio_service_type = icodec->audio_service_type;
2384                 codec->block_align        = icodec->block_align;
2385                 codec->delay              = icodec->delay;
2386                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2387                     codec->block_align= 0;
2388                 if(codec->codec_id == AV_CODEC_ID_AC3)
2389                     codec->block_align= 0;
2390                 break;
2391             case AVMEDIA_TYPE_VIDEO:
2392                 codec->pix_fmt            = icodec->pix_fmt;
2393                 codec->width              = icodec->width;
2394                 codec->height             = icodec->height;
2395                 codec->has_b_frames       = icodec->has_b_frames;
2396                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2397                     sar =
2398                         av_mul_q(ost->frame_aspect_ratio,
2399                                  (AVRational){ codec->height, codec->width });
2400                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2401                            "with stream copy may produce invalid files\n");
2402                 }
2403                 else if (ist->st->sample_aspect_ratio.num)
2404                     sar = ist->st->sample_aspect_ratio;
2405                 else
2406                     sar = icodec->sample_aspect_ratio;
2407                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2408                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2409                 break;
2410             case AVMEDIA_TYPE_SUBTITLE:
2411                 codec->width  = icodec->width;
2412                 codec->height = icodec->height;
2413                 break;
2414             case AVMEDIA_TYPE_DATA:
2415             case AVMEDIA_TYPE_ATTACHMENT:
2416                 break;
2417             default:
2418                 abort();
2419             }
2420         } else {
2421             if (!ost->enc)
2422                 ost->enc = avcodec_find_encoder(codec->codec_id);
2423             if (!ost->enc) {
2424                 /* should only happen when a default codec is not present. */
2425                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2426                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2427                 ret = AVERROR(EINVAL);
2428                 goto dump_format;
2429             }
2430
2431             if (ist)
2432                 ist->decoding_needed++;
2433             ost->encoding_needed = 1;
2434
2435             if (!ost->filter &&
2436                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2437                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2438                     FilterGraph *fg;
2439                     fg = init_simple_filtergraph(ist, ost);
2440                     if (configure_filtergraph(fg)) {
2441                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2442                         exit_program(1);
2443                     }
2444             }
2445
2446             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2447                 if (ost->filter && !ost->frame_rate.num)
2448                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2449                 if (ist && !ost->frame_rate.num)
2450                     ost->frame_rate = ist->framerate;
2451                 if (ist && !ost->frame_rate.num)
2452                     ost->frame_rate = ist->st->r_frame_rate;
2453                 if (ist && !ost->frame_rate.num) {
2454                     ost->frame_rate = (AVRational){25, 1};
2455                     av_log(NULL, AV_LOG_WARNING,
2456                            "No information "
2457                            "about the input framerate is available. Falling "
2458                            "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
2459                            "if you want a different framerate.\n",
2460                            ost->file_index, ost->index);
2461                 }
2462 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2463                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2464                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2465                     ost->frame_rate = ost->enc->supported_framerates[idx];
2466                 }
2467             }
2468
2469             switch (codec->codec_type) {
2470             case AVMEDIA_TYPE_AUDIO:
2471                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2472                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2473                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2474                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2475                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2476                 break;
2477             case AVMEDIA_TYPE_VIDEO:
2478                 codec->time_base = av_inv_q(ost->frame_rate);
2479                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2480                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2481                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2482                    && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2483                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2484                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2485                 }
2486                 for (j = 0; j < ost->forced_kf_count; j++)
2487                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2488                                                          AV_TIME_BASE_Q,
2489                                                          codec->time_base);
2490
2491                 codec->width  = ost->filter->filter->inputs[0]->w;
2492                 codec->height = ost->filter->filter->inputs[0]->h;
2493                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2494                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2495                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2496                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2497                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2498                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2499                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2500                     av_log(NULL, AV_LOG_WARNING,
2501                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2502                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2503                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2504                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2505                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2506                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2507                     av_log(NULL, AV_LOG_WARNING,
2508                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2509                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2510                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2511                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2512
2513                 if (!icodec ||
2514                     codec->width   != icodec->width  ||
2515                     codec->height  != icodec->height ||
2516                     codec->pix_fmt != icodec->pix_fmt) {
2517                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2518                 }
2519
2520                 if (ost->forced_keyframes) {
2521                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2522                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2523                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2524                         if (ret < 0) {
2525                             av_log(NULL, AV_LOG_ERROR,
2526                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2527                             return ret;
2528                         }
2529                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2530                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2531                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2532                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2533                     } else {
2534                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2535                     }
2536                 }
2537                 break;
2538             case AVMEDIA_TYPE_SUBTITLE:
2539                 codec->time_base = (AVRational){1, 1000};
2540                 if (!codec->width) {
2541                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2542                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2543                 }
2544                 break;
2545             default:
2546                 abort();
2547                 break;
2548             }
2549             /* two pass mode */
2550             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2551                 char logfilename[1024];
2552                 FILE *f;
2553
2554                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2555                          ost->logfile_prefix ? ost->logfile_prefix :
2556                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2557                          i);
2558                 if (!strcmp(ost->enc->name, "libx264")) {
2559                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2560                 } else {
2561                     if (codec->flags & CODEC_FLAG_PASS2) {
2562                         char  *logbuffer;
2563                         size_t logbuffer_size;
2564                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2565                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2566                                    logfilename);
2567                             exit_program(1);
2568                         }
2569                         codec->stats_in = logbuffer;
2570                     }
2571                     if (codec->flags & CODEC_FLAG_PASS1) {
2572                         f = av_fopen_utf8(logfilename, "wb");
2573                         if (!f) {
2574                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2575                                 logfilename, strerror(errno));
2576                             exit_program(1);
2577                         }
2578                         ost->logfile = f;
2579                     }
2580                 }
2581             }
2582         }
2583     }
2584
2585     /* open each encoder */
2586     for (i = 0; i < nb_output_streams; i++) {
2587         ost = output_streams[i];
2588         if (ost->encoding_needed) {
2589             AVCodec      *codec = ost->enc;
2590             AVCodecContext *dec = NULL;
2591
2592             if ((ist = get_input_stream(ost)))
2593                 dec = ist->st->codec;
2594             if (dec && dec->subtitle_header) {
2595                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2596                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2597                 if (!ost->st->codec->subtitle_header) {
2598                     ret = AVERROR(ENOMEM);
2599                     goto dump_format;
2600                 }
2601                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2602                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2603             }
2604             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2605                 av_dict_set(&ost->opts, "threads", "auto", 0);
2606             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2607                 if (ret == AVERROR_EXPERIMENTAL)
2608                     abort_codec_experimental(codec, 1);
2609                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2610                         ost->file_index, ost->index);
2611                 goto dump_format;
2612             }
2613             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2614                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2615                 av_buffersink_set_frame_size(ost->filter->filter,
2616                                              ost->st->codec->frame_size);
2617             assert_avoptions(ost->opts);
2618             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2619                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2620                                              " It takes bits/s as argument, not kbits/s\n");
2621             extra_size += ost->st->codec->extradata_size;
2622         } else {
2623             av_opt_set_dict(ost->st->codec, &ost->opts);
2624         }
2625     }
2626
2627     /* init input streams */
2628     for (i = 0; i < nb_input_streams; i++)
2629         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2630             for (i = 0; i < nb_output_streams; i++) {
2631                 ost = output_streams[i];
2632                 avcodec_close(ost->st->codec);
2633             }
2634             goto dump_format;
2635         }
2636
2637     /* discard unused programs */
2638     for (i = 0; i < nb_input_files; i++) {
2639         InputFile *ifile = input_files[i];
2640         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2641             AVProgram *p = ifile->ctx->programs[j];
2642             int discard  = AVDISCARD_ALL;
2643
2644             for (k = 0; k < p->nb_stream_indexes; k++)
2645                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2646                     discard = AVDISCARD_DEFAULT;
2647                     break;
2648                 }
2649             p->discard = discard;
2650         }
2651     }
2652
2653     /* open files and write file headers */
2654     for (i = 0; i < nb_output_files; i++) {
2655         oc = output_files[i]->ctx;
2656         oc->interrupt_callback = int_cb;
2657         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2658             char errbuf[128];
2659             av_strerror(ret, errbuf, sizeof(errbuf));
2660             snprintf(error, sizeof(error),
2661                      "Could not write header for output file #%d "
2662                      "(incorrect codec parameters ?): %s",
2663                      i, errbuf);
2664             ret = AVERROR(EINVAL);
2665             goto dump_format;
2666         }
2667 //         assert_avoptions(output_files[i]->opts);
2668         if (strcmp(oc->oformat->name, "rtp")) {
2669             want_sdp = 0;
2670         }
2671     }
2672
2673  dump_format:
2674     /* dump the file output parameters - cannot be done before in case
2675        of stream copy */
2676     for (i = 0; i < nb_output_files; i++) {
2677         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2678     }
2679
2680     /* dump the stream mapping */
2681     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2682     for (i = 0; i < nb_input_streams; i++) {
2683         ist = input_streams[i];
2684
2685         for (j = 0; j < ist->nb_filters; j++) {
2686             if (ist->filters[j]->graph->graph_desc) {
2687                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2688                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2689                        ist->filters[j]->name);
2690                 if (nb_filtergraphs > 1)
2691                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2692                 av_log(NULL, AV_LOG_INFO, "\n");
2693             }
2694         }
2695     }
2696
2697     for (i = 0; i < nb_output_streams; i++) {
2698         ost = output_streams[i];
2699
2700         if (ost->attachment_filename) {
2701             /* an attached file */
2702             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2703                    ost->attachment_filename, ost->file_index, ost->index);
2704             continue;
2705         }
2706
2707         if (ost->filter && ost->filter->graph->graph_desc) {
2708             /* output from a complex graph */
2709             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2710             if (nb_filtergraphs > 1)
2711                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2712
2713             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2714                    ost->index, ost->enc ? ost->enc->name : "?");
2715             continue;
2716         }
2717
2718         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2719                input_streams[ost->source_index]->file_index,
2720                input_streams[ost->source_index]->st->index,
2721                ost->file_index,
2722                ost->index);
2723         if (ost->sync_ist != input_streams[ost->source_index])
2724             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2725                    ost->sync_ist->file_index,
2726                    ost->sync_ist->st->index);
2727         if (ost->stream_copy)
2728             av_log(NULL, AV_LOG_INFO, " (copy)");
2729         else
2730             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2731                    input_streams[ost->source_index]->dec->name : "?",
2732                    ost->enc ? ost->enc->name : "?");
2733         av_log(NULL, AV_LOG_INFO, "\n");
2734     }
2735
2736     if (ret) {
2737         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2738         return ret;
2739     }
2740
2741     if (want_sdp) {
2742         print_sdp();
2743     }
2744
2745     return 0;
2746 }
2747
2748 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2749 static int need_output(void)
2750 {
2751     int i;
2752
2753     for (i = 0; i < nb_output_streams; i++) {
2754         OutputStream *ost    = output_streams[i];
2755         OutputFile *of       = output_files[ost->file_index];
2756         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2757
2758         if (ost->finished ||
2759             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2760             continue;
2761         if (ost->frame_number >= ost->max_frames) {
2762             int j;
2763             for (j = 0; j < of->ctx->nb_streams; j++)
2764                 close_output_stream(output_streams[of->ost_index + j]);
2765             continue;
2766         }
2767
2768         return 1;
2769     }
2770
2771     return 0;
2772 }
2773
2774 /**
2775  * Select the output stream to process.
2776  *
2777  * @return  selected output stream, or NULL if none available
2778  */
2779 static OutputStream *choose_output(void)
2780 {
2781     int i;
2782     int64_t opts_min = INT64_MAX;
2783     OutputStream *ost_min = NULL;
2784
2785     for (i = 0; i < nb_output_streams; i++) {
2786         OutputStream *ost = output_streams[i];
2787         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2788                                     AV_TIME_BASE_Q);
2789         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2790             opts_min = opts;
2791             ost_min  = ost;
2792         }
2793     }
2794     return ost_min;
2795 }
2796
2797 static int check_keyboard_interaction(int64_t cur_time)
2798 {
2799     int i, ret, key;
2800     static int64_t last_time;
2801     if (received_nb_signals)
2802         return AVERROR_EXIT;
2803     /* read_key() returns 0 on EOF */
2804     if(cur_time - last_time >= 100000 && !run_as_daemon){
2805         key =  read_key();
2806         last_time = cur_time;
2807     }else
2808         key = -1;
2809     if (key == 'q')
2810         return AVERROR_EXIT;
2811     if (key == '+') av_log_set_level(av_log_get_level()+10);
2812     if (key == '-') av_log_set_level(av_log_get_level()-10);
2813     if (key == 's') qp_hist     ^= 1;
2814     if (key == 'h'){
2815         if (do_hex_dump){
2816             do_hex_dump = do_pkt_dump = 0;
2817         } else if(do_pkt_dump){
2818             do_hex_dump = 1;
2819         } else
2820             do_pkt_dump = 1;
2821         av_log_set_level(AV_LOG_DEBUG);
2822     }
2823     if (key == 'c' || key == 'C'){
2824         char buf[4096], target[64], command[256], arg[256] = {0};
2825         double time;
2826         int k, n = 0;
2827         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
2828         i = 0;
2829         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2830             if (k > 0)
2831                 buf[i++] = k;
2832         buf[i] = 0;
2833         if (k > 0 &&
2834             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2835             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2836                    target, time, command, arg);
2837             for (i = 0; i < nb_filtergraphs; i++) {
2838                 FilterGraph *fg = filtergraphs[i];
2839                 if (fg->graph) {
2840                     if (time < 0) {
2841                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2842                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2843                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
2844                     } else if (key == 'c') {
2845                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
2846                         ret = AVERROR_PATCHWELCOME;
2847                     } else {
2848                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2849                     }
2850                 }
2851             }
2852         } else {
2853             av_log(NULL, AV_LOG_ERROR,
2854                    "Parse error, at least 3 arguments were expected, "
2855                    "only %d given in string '%s'\n", n, buf);
2856         }
2857     }
2858     if (key == 'd' || key == 'D'){
2859         int debug=0;
2860         if(key == 'D') {
2861             debug = input_streams[0]->st->codec->debug<<1;
2862             if(!debug) debug = 1;
2863             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2864                 debug += debug;
2865         }else
2866             if(scanf("%d", &debug)!=1)
2867                 fprintf(stderr,"error parsing debug value\n");
2868         for(i=0;i<nb_input_streams;i++) {
2869             input_streams[i]->st->codec->debug = debug;
2870         }
2871         for(i=0;i<nb_output_streams;i++) {
2872             OutputStream *ost = output_streams[i];
2873             ost->st->codec->debug = debug;
2874         }
2875         if(debug) av_log_set_level(AV_LOG_DEBUG);
2876         fprintf(stderr,"debug=%d\n", debug);
2877     }
2878     if (key == '?'){
2879         fprintf(stderr, "key    function\n"
2880                         "?      show this help\n"
2881                         "+      increase verbosity\n"
2882                         "-      decrease verbosity\n"
2883                         "c      Send command to first matching filter supporting it\n"
2884                         "C      Send/Que command to all matching filters\n"
2885                         "D      cycle through available debug modes\n"
2886                         "h      dump packets/hex press to cycle through the 3 states\n"
2887                         "q      quit\n"
2888                         "s      Show QP histogram\n"
2889         );
2890     }
2891     return 0;
2892 }
2893
2894 #if HAVE_PTHREADS
2895 static void *input_thread(void *arg)
2896 {
2897     InputFile *f = arg;
2898     int ret = 0;
2899
2900     while (!transcoding_finished && ret >= 0) {
2901         AVPacket pkt;
2902         ret = av_read_frame(f->ctx, &pkt);
2903
2904         if (ret == AVERROR(EAGAIN)) {
2905             av_usleep(10000);
2906             ret = 0;
2907             continue;
2908         } else if (ret < 0)
2909             break;
2910
2911         pthread_mutex_lock(&f->fifo_lock);
2912         while (!av_fifo_space(f->fifo))
2913             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2914
2915         av_dup_packet(&pkt);
2916         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2917
2918         pthread_mutex_unlock(&f->fifo_lock);
2919     }
2920
2921     f->finished = 1;
2922     return NULL;
2923 }
2924
2925 static void free_input_threads(void)
2926 {
2927     int i;
2928
2929     if (nb_input_files == 1)
2930         return;
2931
2932     transcoding_finished = 1;
2933
2934     for (i = 0; i < nb_input_files; i++) {
2935         InputFile *f = input_files[i];
2936         AVPacket pkt;
2937
2938         if (!f->fifo || f->joined)
2939             continue;
2940
2941         pthread_mutex_lock(&f->fifo_lock);
2942         while (av_fifo_size(f->fifo)) {
2943             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2944             av_free_packet(&pkt);
2945         }
2946         pthread_cond_signal(&f->fifo_cond);
2947         pthread_mutex_unlock(&f->fifo_lock);
2948
2949         pthread_join(f->thread, NULL);
2950         f->joined = 1;
2951
2952         while (av_fifo_size(f->fifo)) {
2953             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2954             av_free_packet(&pkt);
2955         }
2956         av_fifo_free(f->fifo);
2957     }
2958 }
2959
2960 static int init_input_threads(void)
2961 {
2962     int i, ret;
2963
2964     if (nb_input_files == 1)
2965         return 0;
2966
2967     for (i = 0; i < nb_input_files; i++) {
2968         InputFile *f = input_files[i];
2969
2970         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2971             return AVERROR(ENOMEM);
2972
2973         pthread_mutex_init(&f->fifo_lock, NULL);
2974         pthread_cond_init (&f->fifo_cond, NULL);
2975
2976         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2977             return AVERROR(ret);
2978     }
2979     return 0;
2980 }
2981
2982 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2983 {
2984     int ret = 0;
2985
2986     pthread_mutex_lock(&f->fifo_lock);
2987
2988     if (av_fifo_size(f->fifo)) {
2989         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2990         pthread_cond_signal(&f->fifo_cond);
2991     } else {
2992         if (f->finished)
2993             ret = AVERROR_EOF;
2994         else
2995             ret = AVERROR(EAGAIN);
2996     }
2997
2998     pthread_mutex_unlock(&f->fifo_lock);
2999
3000     return ret;
3001 }
3002 #endif
3003
3004 static int get_input_packet(InputFile *f, AVPacket *pkt)
3005 {
3006     if (f->rate_emu) {
3007         int i;
3008         for (i = 0; i < f->nb_streams; i++) {
3009             InputStream *ist = input_streams[f->ist_index + i];
3010             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
3011             int64_t now = av_gettime() - ist->start;
3012             if (pts > now)
3013                 return AVERROR(EAGAIN);
3014         }
3015     }
3016
3017 #if HAVE_PTHREADS
3018     if (nb_input_files > 1)
3019         return get_input_packet_mt(f, pkt);
3020 #endif
3021     return av_read_frame(f->ctx, pkt);
3022 }
3023
3024 static int got_eagain(void)
3025 {
3026     int i;
3027     for (i = 0; i < nb_output_streams; i++)
3028         if (output_streams[i]->unavailable)
3029             return 1;
3030     return 0;
3031 }
3032
3033 static void reset_eagain(void)
3034 {
3035     int i;
3036     for (i = 0; i < nb_input_files; i++)
3037         input_files[i]->eagain = 0;
3038     for (i = 0; i < nb_output_streams; i++)
3039         output_streams[i]->unavailable = 0;
3040 }
3041
3042 /*
3043  * Return
3044  * - 0 -- one packet was read and processed
3045  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3046  *   this function should be called again
3047  * - AVERROR_EOF -- this function should not be called again
3048  */
3049 static int process_input(int file_index)
3050 {
3051     InputFile *ifile = input_files[file_index];
3052     AVFormatContext *is;
3053     InputStream *ist;
3054     AVPacket pkt;
3055     int ret, i, j;
3056
3057     is  = ifile->ctx;
3058     ret = get_input_packet(ifile, &pkt);
3059
3060     if (ret == AVERROR(EAGAIN)) {
3061         ifile->eagain = 1;
3062         return ret;
3063     }
3064     if (ret < 0) {
3065         if (ret != AVERROR_EOF) {
3066             print_error(is->filename, ret);
3067             if (exit_on_error)
3068                 exit_program(1);
3069         }
3070         ifile->eof_reached = 1;
3071
3072         for (i = 0; i < ifile->nb_streams; i++) {
3073             ist = input_streams[ifile->ist_index + i];
3074             if (ist->decoding_needed)
3075                 output_packet(ist, NULL);
3076
3077             /* mark all outputs that don't go through lavfi as finished */
3078             for (j = 0; j < nb_output_streams; j++) {
3079                 OutputStream *ost = output_streams[j];
3080
3081                 if (ost->source_index == ifile->ist_index + i &&
3082                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
3083                     close_output_stream(ost);
3084             }
3085         }
3086
3087         return AVERROR(EAGAIN);
3088     }
3089
3090     reset_eagain();
3091
3092     if (do_pkt_dump) {
3093         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3094                          is->streams[pkt.stream_index]);
3095     }
3096     /* the following test is needed in case new streams appear
3097        dynamically in stream : we ignore them */
3098     if (pkt.stream_index >= ifile->nb_streams) {
3099         report_new_stream(file_index, &pkt);
3100         goto discard_packet;
3101     }
3102
3103     ist = input_streams[ifile->ist_index + pkt.stream_index];
3104     if (ist->discard)
3105         goto discard_packet;
3106
3107     if (debug_ts) {
3108         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3109                "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
3110                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3111                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
3112                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
3113                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3114                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3115                av_ts2str(input_files[ist->file_index]->ts_offset),
3116                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3117     }
3118
3119     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3120         int64_t stime, stime2;
3121         // Correcting starttime based on the enabled streams
3122         // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
3123         //       so we instead do it here as part of discontinuity handling
3124         if (   ist->next_dts == AV_NOPTS_VALUE
3125             && ifile->ts_offset == -is->start_time
3126             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3127             int64_t new_start_time = INT64_MAX;
3128             for (i=0; i<is->nb_streams; i++) {
3129                 AVStream *st = is->streams[i];
3130                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3131                     continue;
3132                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3133             }
3134             if (new_start_time > is->start_time) {
3135                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3136                 ifile->ts_offset = -new_start_time;
3137             }
3138         }
3139
3140         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3141         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3142         ist->wrap_correction_done = 1;
3143
3144         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3145             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3146             ist->wrap_correction_done = 0;
3147         }
3148         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3149             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3150             ist->wrap_correction_done = 0;
3151         }
3152     }
3153
3154     if (pkt.dts != AV_NOPTS_VALUE)
3155         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3156     if (pkt.pts != AV_NOPTS_VALUE)
3157         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3158
3159     if (pkt.pts != AV_NOPTS_VALUE)
3160         pkt.pts *= ist->ts_scale;
3161     if (pkt.dts != AV_NOPTS_VALUE)
3162         pkt.dts *= ist->ts_scale;
3163
3164     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3165         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3166         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3167         int64_t delta   = pkt_dts - ifile->last_ts;
3168         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3169             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3170                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3171             ifile->ts_offset -= delta;
3172             av_log(NULL, AV_LOG_DEBUG,
3173                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3174                    delta, ifile->ts_offset);
3175             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3176             if (pkt.pts != AV_NOPTS_VALUE)
3177                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3178         }
3179     }
3180
3181     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3182         !copy_ts) {
3183         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3184         int64_t delta   = pkt_dts - ist->next_dts;
3185         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3186         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3187             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3188                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3189             pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)){
3190             ifile->ts_offset -= delta;
3191             av_log(NULL, AV_LOG_DEBUG,
3192                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3193                    delta, ifile->ts_offset);
3194             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3195             if (pkt.pts != AV_NOPTS_VALUE)
3196                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3197         }
3198         } else {
3199             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3200                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3201                ) {
3202                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3203                 pkt.dts = AV_NOPTS_VALUE;
3204             }
3205             if (pkt.pts != AV_NOPTS_VALUE){
3206                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3207                 delta   = pkt_pts - ist->next_dts;
3208                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3209                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3210                    ) {
3211                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3212                     pkt.pts = AV_NOPTS_VALUE;
3213                 }
3214             }
3215         }
3216     }
3217
3218     if (pkt.dts != AV_NOPTS_VALUE)
3219         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3220
3221     if (debug_ts) {
3222         av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
3223                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3224                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3225                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3226                av_ts2str(input_files[ist->file_index]->ts_offset),
3227                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3228     }
3229
3230     sub2video_heartbeat(ist, pkt.pts);
3231
3232     ret = output_packet(ist, &pkt);
3233     if (ret < 0) {
3234         char buf[128];
3235         av_strerror(ret, buf, sizeof(buf));
3236         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3237                 ist->file_index, ist->st->index, buf);
3238         if (exit_on_error)
3239             exit_program(1);
3240     }
3241
3242 discard_packet:
3243     av_free_packet(&pkt);
3244
3245     return 0;
3246 }
3247
3248 /**
3249  * Perform a step of transcoding for the specified filter graph.
3250  *
3251  * @param[in]  graph     filter graph to consider
3252  * @param[out] best_ist  input stream where a frame would allow to continue
3253  * @return  0 for success, <0 for error
3254  */
3255 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3256 {
3257     int i, ret;
3258     int nb_requests, nb_requests_max = 0;
3259     InputFilter *ifilter;
3260     InputStream *ist;
3261
3262     *best_ist = NULL;
3263     ret = avfilter_graph_request_oldest(graph->graph);
3264     if (ret >= 0)
3265         return reap_filters();
3266
3267     if (ret == AVERROR_EOF) {
3268         ret = reap_filters();
3269         for (i = 0; i < graph->nb_outputs; i++)
3270             close_output_stream(graph->outputs[i]->ost);
3271         return ret;
3272     }
3273     if (ret != AVERROR(EAGAIN))
3274         return ret;
3275
3276     for (i = 0; i < graph->nb_inputs; i++) {
3277         ifilter = graph->inputs[i];
3278         ist = ifilter->ist;
3279         if (input_files[ist->file_index]->eagain ||
3280             input_files[ist->file_index]->eof_reached)
3281             continue;
3282         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3283         if (nb_requests > nb_requests_max) {
3284             nb_requests_max = nb_requests;
3285             *best_ist = ist;
3286         }
3287     }
3288
3289     if (!*best_ist)
3290         for (i = 0; i < graph->nb_outputs; i++)
3291             graph->outputs[i]->ost->unavailable = 1;
3292
3293     return 0;
3294 }
3295
3296 /**
3297  * Run a single step of transcoding.
3298  *
3299  * @return  0 for success, <0 for error
3300  */
3301 static int transcode_step(void)
3302 {
3303     OutputStream *ost;
3304     InputStream  *ist;
3305     int ret;
3306
3307     ost = choose_output();
3308     if (!ost) {
3309         if (got_eagain()) {
3310             reset_eagain();
3311             av_usleep(10000);
3312             return 0;
3313         }
3314         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3315         return AVERROR_EOF;
3316     }
3317
3318     if (ost->filter) {
3319         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3320             return ret;
3321         if (!ist)
3322             return 0;
3323     } else {
3324         av_assert0(ost->source_index >= 0);
3325         ist = input_streams[ost->source_index];
3326     }
3327
3328     ret = process_input(ist->file_index);
3329     if (ret == AVERROR(EAGAIN)) {
3330         if (input_files[ist->file_index]->eagain)
3331             ost->unavailable = 1;
3332         return 0;
3333     }
3334     if (ret < 0)
3335         return ret == AVERROR_EOF ? 0 : ret;
3336
3337     return reap_filters();
3338 }
3339
3340 /*
3341  * The following code is the main loop of the file converter
3342  */
3343 static int transcode(void)
3344 {
3345     int ret, i;
3346     AVFormatContext *os;
3347     OutputStream *ost;
3348     InputStream *ist;
3349     int64_t timer_start;
3350
3351     ret = transcode_init();
3352     if (ret < 0)
3353         goto fail;
3354
3355     if (stdin_interaction) {
3356         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3357     }
3358
3359     timer_start = av_gettime();
3360
3361 #if HAVE_PTHREADS
3362     if ((ret = init_input_threads()) < 0)
3363         goto fail;
3364 #endif
3365
3366     while (!received_sigterm) {
3367         int64_t cur_time= av_gettime();
3368
3369         /* if 'q' pressed, exits */
3370         if (stdin_interaction)
3371             if (check_keyboard_interaction(cur_time) < 0)
3372                 break;
3373
3374         /* check if there's any stream where output is still needed */
3375         if (!need_output()) {
3376             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3377             break;
3378         }
3379
3380         ret = transcode_step();
3381         if (ret < 0) {
3382             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3383                 continue;
3384
3385             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3386             break;
3387         }
3388
3389         /* dump report by using the output first video and audio streams */
3390         print_report(0, timer_start, cur_time);
3391     }
3392 #if HAVE_PTHREADS
3393     free_input_threads();
3394 #endif
3395
3396     /* at the end of stream, we must flush the decoder buffers */
3397     for (i = 0; i < nb_input_streams; i++) {
3398         ist = input_streams[i];
3399         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3400             output_packet(ist, NULL);
3401         }
3402     }
3403     flush_encoders();
3404
3405     term_exit();
3406
3407     /* write the trailer if needed and close file */
3408     for (i = 0; i < nb_output_files; i++) {
3409         os = output_files[i]->ctx;
3410         av_write_trailer(os);
3411     }
3412
3413     /* dump report by using the first video and audio streams */
3414     print_report(1, timer_start, av_gettime());
3415
3416     /* close each encoder */
3417     for (i = 0; i < nb_output_streams; i++) {
3418         ost = output_streams[i];
3419         if (ost->encoding_needed) {
3420             av_freep(&ost->st->codec->stats_in);
3421             avcodec_close(ost->st->codec);
3422         }
3423     }
3424
3425     /* close each decoder */
3426     for (i = 0; i < nb_input_streams; i++) {
3427         ist = input_streams[i];
3428         if (ist->decoding_needed) {
3429             avcodec_close(ist->st->codec);
3430             if (ist->hwaccel_uninit)
3431                 ist->hwaccel_uninit(ist->st->codec);
3432         }
3433     }
3434
3435     /* finished ! */
3436     ret = 0;
3437
3438  fail:
3439 #if HAVE_PTHREADS
3440     free_input_threads();
3441 #endif
3442
3443     if (output_streams) {
3444         for (i = 0; i < nb_output_streams; i++) {
3445             ost = output_streams[i];
3446             if (ost) {
3447                 if (ost->stream_copy)
3448                     av_freep(&ost->st->codec->extradata);
3449                 if (ost->logfile) {
3450                     fclose(ost->logfile);
3451                     ost->logfile = NULL;
3452                 }
3453                 av_freep(&ost->st->codec->subtitle_header);
3454                 av_freep(&ost->forced_kf_pts);
3455                 av_freep(&ost->apad);
3456                 av_dict_free(&ost->opts);
3457                 av_dict_free(&ost->swr_opts);
3458                 av_dict_free(&ost->resample_opts);
3459             }
3460         }
3461     }
3462     return ret;
3463 }
3464
3465
3466 static int64_t getutime(void)
3467 {
3468 #if HAVE_GETRUSAGE
3469     struct rusage rusage;
3470
3471     getrusage(RUSAGE_SELF, &rusage);
3472     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3473 #elif HAVE_GETPROCESSTIMES
3474     HANDLE proc;
3475     FILETIME c, e, k, u;
3476     proc = GetCurrentProcess();
3477     GetProcessTimes(proc, &c, &e, &k, &u);
3478     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3479 #else
3480     return av_gettime();
3481 #endif
3482 }
3483
3484 static int64_t getmaxrss(void)
3485 {
3486 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3487     struct rusage rusage;
3488     getrusage(RUSAGE_SELF, &rusage);
3489     return (int64_t)rusage.ru_maxrss * 1024;
3490 #elif HAVE_GETPROCESSMEMORYINFO
3491     HANDLE proc;
3492     PROCESS_MEMORY_COUNTERS memcounters;
3493     proc = GetCurrentProcess();
3494     memcounters.cb = sizeof(memcounters);
3495     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3496     return memcounters.PeakPagefileUsage;
3497 #else
3498     return 0;
3499 #endif
3500 }
3501
3502 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3503 {
3504 }
3505
3506 int main(int argc, char **argv)
3507 {
3508     int ret;
3509     int64_t ti;
3510
3511     register_exit(ffmpeg_cleanup);
3512
3513     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3514
3515     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3516     parse_loglevel(argc, argv, options);
3517
3518     if(argc>1 && !strcmp(argv[1], "-d")){
3519         run_as_daemon=1;
3520         av_log_set_callback(log_callback_null);
3521         argc--;
3522         argv++;
3523     }
3524
3525     avcodec_register_all();
3526 #if CONFIG_AVDEVICE
3527     avdevice_register_all();
3528 #endif
3529     avfilter_register_all();
3530     av_register_all();
3531     avformat_network_init();
3532
3533     show_banner(argc, argv, options);
3534
3535     term_init();
3536
3537     /* parse options and open all input/output files */
3538     ret = ffmpeg_parse_options(argc, argv);
3539     if (ret < 0)
3540         exit_program(1);
3541
3542     if (nb_output_files <= 0 && nb_input_files == 0) {
3543         show_usage();
3544         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3545         exit_program(1);
3546     }
3547
3548     /* file converter / grab */
3549     if (nb_output_files <= 0) {
3550         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3551         exit_program(1);
3552     }
3553
3554 //     if (nb_input_files == 0) {
3555 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3556 //         exit_program(1);
3557 //     }
3558
3559     current_time = ti = getutime();
3560     if (transcode() < 0)
3561         exit_program(1);
3562     ti = getutime() - ti;
3563     if (do_benchmark) {
3564         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3565     }
3566     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3567            decode_error_stat[0], decode_error_stat[1]);
3568     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
3569         exit_program(69);
3570
3571     exit_program(received_nb_signals ? 255 : 0);
3572     return 0;
3573 }