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 #if HAVE_ISATTY
  34 #if HAVE_IO_H
  35 #include <io.h>
  36 #endif
  37 #if HAVE_UNISTD_H
  38 #include <unistd.h>
  39 #endif
  40 #endif
  41 #include "libavformat/avformat.h"
  42 #include "libavdevice/avdevice.h"
  43 #include "libswscale/swscale.h"
  44 #include "libswresample/swresample.h"
  45 #include "libavutil/opt.h"
  46 #include "libavutil/audioconvert.h"
  47 #include "libavutil/parseutils.h"
  48 #include "libavutil/samplefmt.h"
  49 #include "libavutil/colorspace.h"
  50 #include "libavutil/fifo.h"
  51 #include "libavutil/intreadwrite.h"
  52 #include "libavutil/dict.h"
  53 #include "libavutil/mathematics.h"
  54 #include "libavutil/pixdesc.h"
  55 #include "libavutil/avstring.h"
  56 #include "libavutil/libm.h"
  57 #include "libavutil/imgutils.h"
  58 #include "libavutil/timestamp.h"
  59 #include "libavutil/bprint.h"
  60 #include "libavutil/time.h"
  61 #include "libavformat/os_support.h"
  62
  63 #include "libavformat/ffm.h" // not public API
  64
  65 # include "libavfilter/avcodec.h"
  66 # include "libavfilter/avfilter.h"
  67 # include "libavfilter/avfiltergraph.h"
  68 # include "libavfilter/buffersrc.h"
  69 # include "libavfilter/buffersink.h"
  70
  71 #if HAVE_SYS_RESOURCE_H
  72 #include <sys/types.h>
  73 #include <sys/resource.h>
  74 #elif HAVE_GETPROCESSTIMES
  75 #include <windows.h>
  76 #endif
  77 #if HAVE_GETPROCESSMEMORYINFO
  78 #include <windows.h>
  79 #include <psapi.h>
  80 #endif
  81
  82 #if HAVE_SYS_SELECT_H
  83 #include <sys/select.h>
  84 #endif
  85
  86 #if HAVE_TERMIOS_H
  87 #include <fcntl.h>
  88 #include <sys/ioctl.h>
  89 #include <sys/time.h>
  90 #include <termios.h>
  91 #elif HAVE_KBHIT
  92 #include <conio.h>
  93 #endif
  94
  95 #if HAVE_PTHREADS
  96 #include <pthread.h>
  97 #endif
  98
  99 #include <time.h>
 100
 101 #include "ffmpeg.h"
 102 #include "cmdutils.h"
 103
 104 #include "libavutil/avassert.h"
 105
 106 const char program_name[] = "ffmpeg";
 107 const int program_birth_year = 2000;
 108
 109 static FILE *vstats_file;
 110
 111 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
 112 static int64_t getutime(void);
 113
 114 static int run_as_daemon  = 0;
 115 static int64_t video_size = 0;
 116 static int64_t audio_size = 0;
 117 static int64_t subtitle_size = 0;
 118 static int64_t extra_size = 0;
 119 static int nb_frames_dup = 0;
 120 static int nb_frames_drop = 0;
 121
 122 static int current_time;
 123 AVIOContext *progress_avio = NULL;
 124
 125 static uint8_t *subtitle_out;
 126
 127 #if HAVE_PTHREADS
 128 /* signal to input threads that they should exit; set by the main thread */
 129 static int transcoding_finished;
 130 #endif
 131
 132 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 133
 134 InputStream **input_streams = NULL;
 135 int        nb_input_streams = 0;
 136 InputFile   **input_files   = NULL;
 137 int        nb_input_files   = 0;
 138
 139 OutputStream **output_streams = NULL;
 140 int         nb_output_streams = 0;
 141 OutputFile   **output_files   = NULL;
 142 int         nb_output_files   = 0;
 143
 144 FilterGraph **filtergraphs;
 145 int        nb_filtergraphs;
 146
 147 #if HAVE_TERMIOS_H
 148
 149 /* init terminal so that we can grab keys */
 150 static struct termios oldtty;
 151 static int restore_tty;
 152 #endif
 153
 154
 155 /* sub2video hack:
 156    Convert subtitles to video with alpha to insert them in filter graphs.
 157    This is a temporary solution until libavfilter gets real subtitles support.
 158  */
 159
 160
 161
 162 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 163                                 AVSubtitleRect *r)
 164 {
 165     uint32_t *pal, *dst2;
 166     uint8_t *src, *src2;
 167     int x, y;
 168
 169     if (r->type != SUBTITLE_BITMAP) {
 170         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 171         return;
 172     }
 173     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 174         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 175         return;
 176     }
 177
 178     dst += r->y * dst_linesize + r->x * 4;
 179     src = r->pict.data[0];
 180     pal = (uint32_t *)r->pict.data[1];
 181     for (y = 0; y < r->h; y++) {
 182         dst2 = (uint32_t *)dst;
 183         src2 = src;
 184         for (x = 0; x < r->w; x++)
 185             *(dst2++) = pal[*(src2++)];
 186         dst += dst_linesize;
 187         src += r->pict.linesize[0];
 188     }
 189 }
 190
 191 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 192 {
 193     AVFilterBufferRef *ref = ist->sub2video.ref;
 194     int i;
 195
 196     ist->sub2video.last_pts = ref->pts = pts;
 197     for (i = 0; i < ist->nb_filters; i++)
 198         av_buffersrc_add_ref(ist->filters[i]->filter,
 199                              avfilter_ref_buffer(ref, ~0),
 200                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
 201                              AV_BUFFERSRC_FLAG_NO_COPY |
 202                              AV_BUFFERSRC_FLAG_PUSH);
 203 }
 204
 205 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 206 {
 207     int w = ist->sub2video.w, h = ist->sub2video.h;
 208     AVFilterBufferRef *ref = ist->sub2video.ref;
 209     int8_t *dst;
 210     int     dst_linesize;
 211     int i;
 212     int64_t pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ist->st->time_base);
 213
 214     if (!ref)
 215         return;
 216     dst          = ref->data    [0];
 217     dst_linesize = ref->linesize[0];
 218     memset(dst, 0, h * dst_linesize);
 219     for (i = 0; i < sub->num_rects; i++)
 220         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 221     sub2video_push_ref(ist, pts);
 222 }
 223
 224 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 225 {
 226     InputFile *infile = input_files[ist->file_index];
 227     int i, j, nb_reqs;
 228     int64_t pts2;
 229
 230     /* When a frame is read from a file, examine all sub2video streams in
 231        the same file and send the sub2video frame again. Otherwise, decoded
 232        video frames could be accumulating in the filter graph while a filter
 233        (possibly overlay) is desperately waiting for a subtitle frame. */
 234     for (i = 0; i < infile->nb_streams; i++) {
 235         InputStream *ist2 = input_streams[infile->ist_index + i];
 236         if (!ist2->sub2video.ref)
 237             continue;
 238         /* subtitles seem to be usually muxed ahead of other streams;
 239            if not, substracting a larger time here is necessary */
 240         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 241         /* do not send the heartbeat frame if the subtitle is already ahead */
 242         if (pts2 <= ist2->sub2video.last_pts)
 243             continue;
 244         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 245             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 246         if (nb_reqs)
 247             sub2video_push_ref(ist2, pts2);
 248     }
 249 }
 250
 251 static void sub2video_flush(InputStream *ist)
 252 {
 253     int i;
 254
 255     for (i = 0; i < ist->nb_filters; i++)
 256         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 257 }
 258
 259 /* end of sub2video hack */
 260
 261 void term_exit(void)
 262 {
 263     av_log(NULL, AV_LOG_QUIET, "%s", "");
 264 #if HAVE_TERMIOS_H
 265     if(restore_tty)
 266         tcsetattr (0, TCSANOW, &oldtty);
 267 #endif
 268 }
 269
 270 static volatile int received_sigterm = 0;
 271 static volatile int received_nb_signals = 0;
 272
 273 static void
 274 sigterm_handler(int sig)
 275 {
 276     received_sigterm = sig;
 277     received_nb_signals++;
 278     term_exit();
 279     if(received_nb_signals > 3)
 280         exit(123);
 281 }
 282
 283 void term_init(void)
 284 {
 285 #if HAVE_TERMIOS_H
 286     if(!run_as_daemon){
 287         struct termios tty;
 288         int istty = 1;
 289 #if HAVE_ISATTY
 290         istty = isatty(0) && isatty(2);
 291 #endif
 292         if (istty && tcgetattr (0, &tty) == 0) {
 293             oldtty = tty;
 294             restore_tty = 1;
 295             atexit(term_exit);
 296
 297             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 298                              |INLCR|IGNCR|ICRNL|IXON);
 299             tty.c_oflag |= OPOST;
 300             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 301             tty.c_cflag &= ~(CSIZE|PARENB);
 302             tty.c_cflag |= CS8;
 303             tty.c_cc[VMIN] = 1;
 304             tty.c_cc[VTIME] = 0;
 305
 306             tcsetattr (0, TCSANOW, &tty);
 307         }
 308         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 309     }
 310 #endif
 311     avformat_network_deinit();
 312
 313     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 314     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 315 #ifdef SIGXCPU
 316     signal(SIGXCPU, sigterm_handler);
 317 #endif
 318 }
 319
 320 /* read a key without blocking */
 321 static int read_key(void)
 322 {
 323     unsigned char ch;
 324 #if HAVE_TERMIOS_H
 325     int n = 1;
 326     struct timeval tv;
 327     fd_set rfds;
 328
 329     FD_ZERO(&rfds);
 330     FD_SET(0, &rfds);
 331     tv.tv_sec = 0;
 332     tv.tv_usec = 0;
 333     n = select(1, &rfds, NULL, NULL, &tv);
 334     if (n > 0) {
 335         n = read(0, &ch, 1);
 336         if (n == 1)
 337             return ch;
 338
 339         return n;
 340     }
 341 #elif HAVE_KBHIT
 342 #    if HAVE_PEEKNAMEDPIPE
 343     static int is_pipe;
 344     static HANDLE input_handle;
 345     DWORD dw, nchars;
 346     if(!input_handle){
 347         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 348         is_pipe = !GetConsoleMode(input_handle, &dw);
 349     }
 350
 351     if (stdin->_cnt > 0) {
 352         read(0, &ch, 1);
 353         return ch;
 354     }
 355     if (is_pipe) {
 356         /* When running under a GUI, you will end here. */
 357         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
 358             return -1;
 359         //Read it
 360         if(nchars != 0) {
 361             read(0, &ch, 1);
 362             return ch;
 363         }else{
 364             return -1;
 365         }
 366     }
 367 #    endif
 368     if(kbhit())
 369         return(getch());
 370 #endif
 371     return -1;
 372 }
 373
 374 static int decode_interrupt_cb(void *ctx)
 375 {
 376     return received_nb_signals > 1;
 377 }
 378
 379 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 380
 381 void av_noreturn exit_program(int ret)
 382 {
 383     int i, j;
 384
 385     for (i = 0; i < nb_filtergraphs; i++) {
 386         avfilter_graph_free(&filtergraphs[i]->graph);
 387         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 388             av_freep(&filtergraphs[i]->inputs[j]->name);
 389             av_freep(&filtergraphs[i]->inputs[j]);
 390         }
 391         av_freep(&filtergraphs[i]->inputs);
 392         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 393             av_freep(&filtergraphs[i]->outputs[j]->name);
 394             av_freep(&filtergraphs[i]->outputs[j]);
 395         }
 396         av_freep(&filtergraphs[i]->outputs);
 397         av_freep(&filtergraphs[i]);
 398     }
 399     av_freep(&filtergraphs);
 400
 401     av_freep(&subtitle_out);
 402
 403     /* close files */
 404     for (i = 0; i < nb_output_files; i++) {
 405         AVFormatContext *s = output_files[i]->ctx;
 406         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 407             avio_close(s->pb);
 408         avformat_free_context(s);
 409         av_dict_free(&output_files[i]->opts);
 410         av_freep(&output_files[i]);
 411     }
 412     for (i = 0; i < nb_output_streams; i++) {
 413         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 414         while (bsfc) {
 415             AVBitStreamFilterContext *next = bsfc->next;
 416             av_bitstream_filter_close(bsfc);
 417             bsfc = next;
 418         }
 419         output_streams[i]->bitstream_filters = NULL;
 420         avcodec_free_frame(&output_streams[i]->filtered_frame);
 421
 422         av_freep(&output_streams[i]->forced_keyframes);
 423         av_freep(&output_streams[i]->avfilter);
 424         av_freep(&output_streams[i]->logfile_prefix);
 425         av_freep(&output_streams[i]);
 426     }
 427     for (i = 0; i < nb_input_files; i++) {
 428         avformat_close_input(&input_files[i]->ctx);
 429         av_freep(&input_files[i]);
 430     }
 431     for (i = 0; i < nb_input_streams; i++) {
 432         avcodec_free_frame(&input_streams[i]->decoded_frame);
 433         av_dict_free(&input_streams[i]->opts);
 434         free_buffer_pool(&input_streams[i]->buffer_pool);
 435         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
 436         av_freep(&input_streams[i]->filters);
 437         av_freep(&input_streams[i]);
 438     }
 439
 440     if (vstats_file)
 441         fclose(vstats_file);
 442     av_free(vstats_filename);
 443
 444     av_freep(&input_streams);
 445     av_freep(&input_files);
 446     av_freep(&output_streams);
 447     av_freep(&output_files);
 448
 449     uninit_opts();
 450
 451     avfilter_uninit();
 452     avformat_network_deinit();
 453
 454     if (received_sigterm) {
 455         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 456                (int) received_sigterm);
 457         exit (255);
 458     }
 459
 460     exit(ret);
 461 }
 462
 463 void assert_avoptions(AVDictionary *m)
 464 {
 465     AVDictionaryEntry *t;
 466     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 467         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 468         exit_program(1);
 469     }
 470 }
 471
 472 static void assert_codec_experimental(AVCodecContext *c, int encoder)
 473 {
 474     const char *codec_string = encoder ? "encoder" : "decoder";
 475     AVCodec *codec;
 476     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
 477         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
 478         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
 479                 "results.\nAdd '-strict experimental' if you want to use it.\n",
 480                 codec_string, c->codec->name);
 481         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
 482         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
 483             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
 484                    codec_string, codec->name);
 485         exit_program(1);
 486     }
 487 }
 488
 489 static void update_benchmark(const char *fmt, ...)
 490 {
 491     if (do_benchmark_all) {
 492         int64_t t = getutime();
 493         va_list va;
 494         char buf[1024];
 495
 496         if (fmt) {
 497             va_start(va, fmt);
 498             vsnprintf(buf, sizeof(buf), fmt, va);
 499             va_end(va);
 500             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 501         }
 502         current_time = t;
 503     }
 504 }
 505
 506 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 507 {
 508     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 509     AVCodecContext          *avctx = ost->st->codec;
 510     int ret;
 511
 512     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 513         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 514         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 515
 516     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
 517         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 518         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
 519             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
 520                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
 521             if(pkt->pts >= pkt->dts)
 522                 pkt->pts = FFMAX(pkt->pts, max);
 523             pkt->dts = max;
 524         }
 525     }
 526
 527     /*
 528      * Audio encoders may split the packets --  #frames in != #packets out.
 529      * But there is no reordering, so we can limit the number of output packets
 530      * by simply dropping them here.
 531      * Counting encoded video frames needs to be done separately because of
 532      * reordering, see do_video_out()
 533      */
 534     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 535         if (ost->frame_number >= ost->max_frames) {
 536             av_free_packet(pkt);
 537             return;
 538         }
 539         ost->frame_number++;
 540     }
 541
 542     while (bsfc) {
 543         AVPacket new_pkt = *pkt;
 544         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 545                                            &new_pkt.data, &new_pkt.size,
 546                                            pkt->data, pkt->size,
 547                                            pkt->flags & AV_PKT_FLAG_KEY);
 548         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 549             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
 550             if(t) {
 551                 memcpy(t, new_pkt.data, new_pkt.size);
 552                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 553                 new_pkt.data = t;
 554                 a = 1;
 555             } else
 556                 a = AVERROR(ENOMEM);
 557         }
 558         if (a > 0) {
 559             av_free_packet(pkt);
 560             new_pkt.destruct = av_destruct_packet;
 561         } else if (a < 0) {
 562             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 563                    bsfc->filter->name, pkt->stream_index,
 564                    avctx->codec ? avctx->codec->name : "copy");
 565             print_error("", a);
 566             if (exit_on_error)
 567                 exit_program(1);
 568         }
 569         *pkt = new_pkt;
 570
 571         bsfc = bsfc->next;
 572     }
 573
 574     pkt->stream_index = ost->index;
 575
 576     if (debug_ts) {
 577         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 578                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 579                 av_get_media_type_string(ost->st->codec->codec_type),
 580                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 581                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 582                 pkt->size
 583               );
 584     }
 585
 586     ret = av_interleaved_write_frame(s, pkt);
 587     if (ret < 0) {
 588         print_error("av_interleaved_write_frame()", ret);
 589         exit_program(1);
 590     }
 591 }
 592
 593 static void close_output_stream(OutputStream *ost)
 594 {
 595     OutputFile *of = output_files[ost->file_index];
 596
 597     ost->finished = 1;
 598     if (of->shortest) {
 599         int i;
 600         for (i = 0; i < of->ctx->nb_streams; i++)
 601             output_streams[of->ost_index + i]->finished = 1;
 602     }
 603 }
 604
 605 static int check_recording_time(OutputStream *ost)
 606 {
 607     OutputFile *of = output_files[ost->file_index];
 608
 609     if (of->recording_time != INT64_MAX &&
 610         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 611                       AV_TIME_BASE_Q) >= 0) {
 612         close_output_stream(ost);
 613         return 0;
 614     }
 615     return 1;
 616 }
 617
 618 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 619                          AVFrame *frame)
 620 {
 621     AVCodecContext *enc = ost->st->codec;
 622     AVPacket pkt;
 623     int got_packet = 0;
 624
 625     av_init_packet(&pkt);
 626     pkt.data = NULL;
 627     pkt.size = 0;
 628
 629     if (!check_recording_time(ost))
 630         return;
 631
 632     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 633         frame->pts = ost->sync_opts;
 634     ost->sync_opts = frame->pts + frame->nb_samples;
 635
 636     av_assert0(pkt.size || !pkt.data);
 637     update_benchmark(NULL);
 638     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 639         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 640         exit_program(1);
 641     }
 642     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 643
 644     if (got_packet) {
 645         if (pkt.pts != AV_NOPTS_VALUE)
 646             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 647         if (pkt.dts != AV_NOPTS_VALUE)
 648             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 649         if (pkt.duration > 0)
 650             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 651
 652         if (debug_ts) {
 653             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 654                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 655                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 656                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 657         }
 658
 659         audio_size += pkt.size;
 660         write_frame(s, &pkt, ost);
 661
 662         av_free_packet(&pkt);
 663     }
 664 }
 665
 666 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
 667 {
 668     AVCodecContext *dec;
 669     AVPicture *picture2;
 670     AVPicture picture_tmp;
 671     uint8_t *buf = 0;
 672
 673     dec = ist->st->codec;
 674
 675     /* deinterlace : must be done before any resize */
 676     if (do_deinterlace) {
 677         int size;
 678
 679         /* create temporary picture */
 680         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
 681         buf  = av_malloc(size);
 682         if (!buf)
 683             return;
 684
 685         picture2 = &picture_tmp;
 686         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
 687
 688         if (avpicture_deinterlace(picture2, picture,
 689                                  dec->pix_fmt, dec->width, dec->height) < 0) {
 690             /* if error, do not deinterlace */
 691             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
 692             av_free(buf);
 693             buf = NULL;
 694             picture2 = picture;
 695         }
 696     } else {
 697         picture2 = picture;
 698     }
 699
 700     if (picture != picture2)
 701         *picture = *picture2;
 702     *bufp = buf;
 703 }
 704
 705 static void do_subtitle_out(AVFormatContext *s,
 706                             OutputStream *ost,
 707                             InputStream *ist,
 708                             AVSubtitle *sub)
 709 {
 710     int subtitle_out_max_size = 1024 * 1024;
 711     int subtitle_out_size, nb, i;
 712     AVCodecContext *enc;
 713     AVPacket pkt;
 714     int64_t pts;
 715
 716     if (sub->pts == AV_NOPTS_VALUE) {
 717         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 718         if (exit_on_error)
 719             exit_program(1);
 720         return;
 721     }
 722
 723     enc = ost->st->codec;
 724
 725     if (!subtitle_out) {
 726         subtitle_out = av_malloc(subtitle_out_max_size);
 727     }
 728
 729     /* Note: DVB subtitle need one packet to draw them and one other
 730        packet to clear them */
 731     /* XXX: signal it in the codec context ? */
 732     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 733         nb = 2;
 734     else
 735         nb = 1;
 736
 737     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 738     pts = sub->pts - output_files[ost->file_index]->start_time;
 739     for (i = 0; i < nb; i++) {
 740         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 741         if (!check_recording_time(ost))
 742             return;
 743
 744         sub->pts = pts;
 745         // start_display_time is required to be 0
 746         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 747         sub->end_display_time  -= sub->start_display_time;
 748         sub->start_display_time = 0;
 749         if (i == 1)
 750             sub->num_rects = 0;
 751         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 752                                                     subtitle_out_max_size, sub);
 753         if (subtitle_out_size < 0) {
 754             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 755             exit_program(1);
 756         }
 757
 758         av_init_packet(&pkt);
 759         pkt.data = subtitle_out;
 760         pkt.size = subtitle_out_size;
 761         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 762         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 763         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 764             /* XXX: the pts correction is handled here. Maybe handling
 765                it in the codec would be better */
 766             if (i == 0)
 767                 pkt.pts += 90 * sub->start_display_time;
 768             else
 769                 pkt.pts += 90 * sub->end_display_time;
 770         }
 771         subtitle_size += pkt.size;
 772         write_frame(s, &pkt, ost);
 773     }
 774 }
 775
 776 static void do_video_out(AVFormatContext *s,
 777                          OutputStream *ost,
 778                          AVFrame *in_picture,
 779                          float quality)
 780 {
 781     int ret, format_video_sync;
 782     AVPacket pkt;
 783     AVCodecContext *enc = ost->st->codec;
 784     int nb_frames, i;
 785     double sync_ipts, delta;
 786     double duration = 0;
 787     int frame_size = 0;
 788     InputStream *ist = NULL;
 789
 790     if (ost->source_index >= 0)
 791         ist = input_streams[ost->source_index];
 792
 793     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 794         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 795
 796     sync_ipts = in_picture->pts;
 797     delta = sync_ipts - ost->sync_opts + duration;
 798
 799     /* by default, we output a single frame */
 800     nb_frames = 1;
 801
 802     format_video_sync = video_sync_method;
 803     if (format_video_sync == VSYNC_AUTO)
 804         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
 805
 806     switch (format_video_sync) {
 807     case VSYNC_CFR:
 808         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 809         if (delta < -1.1)
 810             nb_frames = 0;
 811         else if (delta > 1.1)
 812             nb_frames = lrintf(delta);
 813         break;
 814     case VSYNC_VFR:
 815         if (delta <= -0.6)
 816             nb_frames = 0;
 817         else if (delta > 0.6)
 818             ost->sync_opts = lrint(sync_ipts);
 819         break;
 820     case VSYNC_DROP:
 821     case VSYNC_PASSTHROUGH:
 822         ost->sync_opts = lrint(sync_ipts);
 823         break;
 824     default:
 825         av_assert0(0);
 826     }
 827
 828     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 829     if (nb_frames == 0) {
 830         nb_frames_drop++;
 831         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 832         return;
 833     } else if (nb_frames > 1) {
 834         if (nb_frames > dts_error_threshold * 30) {
 835             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 836             nb_frames_drop++;
 837             return;
 838         }
 839         nb_frames_dup += nb_frames - 1;
 840         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 841     }
 842
 843   /* duplicates frame if needed */
 844   for (i = 0; i < nb_frames; i++) {
 845     av_init_packet(&pkt);
 846     pkt.data = NULL;
 847     pkt.size = 0;
 848
 849     in_picture->pts = ost->sync_opts;
 850
 851     if (!check_recording_time(ost))
 852         return;
 853
 854     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 855         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 856         /* raw pictures are written as AVPicture structure to
 857            avoid any copies. We support temporarily the older
 858            method. */
 859         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 860         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 861         pkt.data   = (uint8_t *)in_picture;
 862         pkt.size   =  sizeof(AVPicture);
 863         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 864         pkt.flags |= AV_PKT_FLAG_KEY;
 865
 866         video_size += pkt.size;
 867         write_frame(s, &pkt, ost);
 868     } else {
 869         int got_packet;
 870         AVFrame big_picture;
 871
 872         big_picture = *in_picture;
 873         /* better than nothing: use input picture interlaced
 874            settings */
 875         big_picture.interlaced_frame = in_picture->interlaced_frame;
 876         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
 877             if (ost->top_field_first == -1)
 878                 big_picture.top_field_first = in_picture->top_field_first;
 879             else
 880                 big_picture.top_field_first = !!ost->top_field_first;
 881         }
 882
 883         /* handles same_quant here. This is not correct because it may
 884            not be a global option */
 885         big_picture.quality = quality;
 886         if (!enc->me_threshold)
 887             big_picture.pict_type = 0;
 888         if (ost->forced_kf_index < ost->forced_kf_count &&
 889             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 890             big_picture.pict_type = AV_PICTURE_TYPE_I;
 891             ost->forced_kf_index++;
 892         }
 893         update_benchmark(NULL);
 894         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
 895         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 896         if (ret < 0) {
 897             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 898             exit_program(1);
 899         }
 900
 901         if (got_packet) {
 902             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 903                 pkt.pts = ost->sync_opts;
 904
 905             if (pkt.pts != AV_NOPTS_VALUE)
 906                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 907             if (pkt.dts != AV_NOPTS_VALUE)
 908                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 909
 910             if (debug_ts) {
 911                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 912                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 913                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 914                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 915             }
 916
 917             frame_size = pkt.size;
 918             video_size += pkt.size;
 919             write_frame(s, &pkt, ost);
 920             av_free_packet(&pkt);
 921
 922             /* if two pass, output log */
 923             if (ost->logfile && enc->stats_out) {
 924                 fprintf(ost->logfile, "%s", enc->stats_out);
 925             }
 926         }
 927     }
 928     ost->sync_opts++;
 929     /*
 930      * For video, number of frames in == number of packets out.
 931      * But there may be reordering, so we can't throw away frames on encoder
 932      * flush, we need to limit them here, before they go into encoder.
 933      */
 934     ost->frame_number++;
 935   }
 936
 937     if (vstats_filename && frame_size)
 938         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
 939 }
 940
 941 static double psnr(double d)
 942 {
 943     return -10.0 * log(d) / log(10.0);
 944 }
 945
 946 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
 947                            int frame_size)
 948 {
 949     AVCodecContext *enc;
 950     int frame_number;
 951     double ti1, bitrate, avg_bitrate;
 952
 953     /* this is executed just the first time do_video_stats is called */
 954     if (!vstats_file) {
 955         vstats_file = fopen(vstats_filename, "w");
 956         if (!vstats_file) {
 957             perror("fopen");
 958             exit_program(1);
 959         }
 960     }
 961
 962     enc = ost->st->codec;
 963     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 964         frame_number = ost->frame_number;
 965         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
 966         if (enc->flags&CODEC_FLAG_PSNR)
 967             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
 968
 969         fprintf(vstats_file,"f_size= %6d ", frame_size);
 970         /* compute pts value */
 971         ti1 = ost->sync_opts * av_q2d(enc->time_base);
 972         if (ti1 < 0.01)
 973             ti1 = 0.01;
 974
 975         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
 976         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
 977         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
 978                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
 979         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
 980     }
 981 }
 982
 983 /**
 984  * Get and encode new output from any of the filtergraphs, without causing
 985  * activity.
 986  *
 987  * @return  0 for success, <0 for severe errors
 988  */
 989 static int reap_filters(void)
 990 {
 991     AVFilterBufferRef *picref;
 992     AVFrame *filtered_frame = NULL;
 993     int i;
 994     int64_t frame_pts;
 995
 996     /* Reap all buffers present in the buffer sinks */
 997     for (i = 0; i < nb_output_streams; i++) {
 998         OutputStream *ost = output_streams[i];
 999         OutputFile    *of = output_files[ost->file_index];
1000         int ret = 0;
1001
1002         if (!ost->filter)
1003             continue;
1004
1005         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1006             return AVERROR(ENOMEM);
1007         } else
1008             avcodec_get_frame_defaults(ost->filtered_frame);
1009         filtered_frame = ost->filtered_frame;
1010
1011         while (1) {
1012             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1013                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1014             if (ret < 0) {
1015                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1016                     char buf[256];
1017                     av_strerror(ret, buf, sizeof(buf));
1018                     av_log(NULL, AV_LOG_WARNING,
1019                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1020                 }
1021                 break;
1022             }
1023             frame_pts = AV_NOPTS_VALUE;
1024             if (picref->pts != AV_NOPTS_VALUE) {
1025                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1026                                                 ost->filter->filter->inputs[0]->time_base,
1027                                                 ost->st->codec->time_base) -
1028                                     av_rescale_q(of->start_time,
1029                                                 AV_TIME_BASE_Q,
1030                                                 ost->st->codec->time_base);
1031
1032                 if (of->start_time && filtered_frame->pts < 0) {
1033                     avfilter_unref_buffer(picref);
1034                     continue;
1035                 }
1036             }
1037             //if (ost->source_index >= 0)
1038             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1039
1040
1041             switch (ost->filter->filter->inputs[0]->type) {
1042             case AVMEDIA_TYPE_VIDEO:
1043                 avfilter_copy_buf_props(filtered_frame, picref);
1044                 filtered_frame->pts = frame_pts;
1045                 if (!ost->frame_aspect_ratio)
1046                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1047
1048                 do_video_out(of->ctx, ost, filtered_frame,
1049                              same_quant ? ost->last_quality :
1050                                           ost->st->codec->global_quality);
1051                 break;
1052             case AVMEDIA_TYPE_AUDIO:
1053                 avfilter_copy_buf_props(filtered_frame, picref);
1054                 filtered_frame->pts = frame_pts;
1055                 do_audio_out(of->ctx, ost, filtered_frame);
1056                 break;
1057             default:
1058                 // TODO support subtitle filters
1059                 av_assert0(0);
1060             }
1061
1062             avfilter_unref_buffer(picref);
1063         }
1064     }
1065
1066     return 0;
1067 }
1068
1069 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1070 {
1071     char buf[1024];
1072     AVBPrint buf_script;
1073     OutputStream *ost;
1074     AVFormatContext *oc;
1075     int64_t total_size;
1076     AVCodecContext *enc;
1077     int frame_number, vid, i;
1078     double bitrate;
1079     int64_t pts = INT64_MIN;
1080     static int64_t last_time = -1;
1081     static int qp_histogram[52];
1082     int hours, mins, secs, us;
1083
1084     if (!print_stats && !is_last_report && !progress_avio)
1085         return;
1086
1087     if (!is_last_report) {
1088         if (last_time == -1) {
1089             last_time = cur_time;
1090             return;
1091         }
1092         if ((cur_time - last_time) < 500000)
1093             return;
1094         last_time = cur_time;
1095     }
1096
1097
1098     oc = output_files[0]->ctx;
1099
1100     total_size = avio_size(oc->pb);
1101     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1102         total_size = avio_tell(oc->pb);
1103         if (total_size < 0)
1104             total_size = 0;
1105     }
1106
1107     buf[0] = '\0';
1108     vid = 0;
1109     av_bprint_init(&buf_script, 0, 1);
1110     for (i = 0; i < nb_output_streams; i++) {
1111         float q = -1;
1112         ost = output_streams[i];
1113         enc = ost->st->codec;
1114         if (!ost->stream_copy && enc->coded_frame)
1115             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1116         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1117             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1118             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1119                        ost->file_index, ost->index, q);
1120         }
1121         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1122             float fps, t = (cur_time-timer_start) / 1000000.0;
1123
1124             frame_number = ost->frame_number;
1125             fps = t > 1 ? frame_number / t : 0;
1126             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1127                      frame_number, fps < 9.95, fps, q);
1128             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1129             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1130             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1131                        ost->file_index, ost->index, q);
1132             if (is_last_report)
1133                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1134             if (qp_hist) {
1135                 int j;
1136                 int qp = lrintf(q);
1137                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1138                     qp_histogram[qp]++;
1139                 for (j = 0; j < 32; j++)
1140                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1141             }
1142             if (enc->flags&CODEC_FLAG_PSNR) {
1143                 int j;
1144                 double error, error_sum = 0;
1145                 double scale, scale_sum = 0;
1146                 double p;
1147                 char type[3] = { 'Y','U','V' };
1148                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1149                 for (j = 0; j < 3; j++) {
1150                     if (is_last_report) {
1151                         error = enc->error[j];
1152                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1153                     } else {
1154                         error = enc->coded_frame->error[j];
1155                         scale = enc->width * enc->height * 255.0 * 255.0;
1156                     }
1157                     if (j)
1158                         scale /= 4;
1159                     error_sum += error;
1160                     scale_sum += scale;
1161                     p = psnr(error / scale);
1162                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1163                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1164                                ost->file_index, ost->index, type[i] | 32, p);
1165                 }
1166                 p = psnr(error_sum / scale_sum);
1167                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1168                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1169                            ost->file_index, ost->index, p);
1170             }
1171             vid = 1;
1172         }
1173         /* compute min output value */
1174         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1175             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1176                                           ost->st->time_base, AV_TIME_BASE_Q));
1177     }
1178
1179     secs = pts / AV_TIME_BASE;
1180     us = pts % AV_TIME_BASE;
1181     mins = secs / 60;
1182     secs %= 60;
1183     hours = mins / 60;
1184     mins %= 60;
1185
1186     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1187
1188     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1189              "size=%8.0fkB time=", total_size / 1024.0);
1190     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1191              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1192              (100 * us) / AV_TIME_BASE);
1193     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1194              "bitrate=%6.1fkbits/s", bitrate);
1195     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1196     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1197     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1198                hours, mins, secs, us);
1199
1200     if (nb_frames_dup || nb_frames_drop)
1201         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1202                 nb_frames_dup, nb_frames_drop);
1203     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1204     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1205
1206     if (print_stats || is_last_report) {
1207     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1208
1209     fflush(stderr);
1210     }
1211
1212     if (progress_avio) {
1213         av_bprintf(&buf_script, "progress=%s\n",
1214                    is_last_report ? "end" : "continue");
1215         avio_write(progress_avio, buf_script.str,
1216                    FFMIN(buf_script.len, buf_script.size - 1));
1217         avio_flush(progress_avio);
1218         av_bprint_finalize(&buf_script, NULL);
1219         if (is_last_report) {
1220             avio_close(progress_avio);
1221             progress_avio = NULL;
1222         }
1223     }
1224
1225     if (is_last_report) {
1226         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1227         av_log(NULL, AV_LOG_INFO, "\n");
1228         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1229                video_size / 1024.0,
1230                audio_size / 1024.0,
1231                subtitle_size / 1024.0,
1232                extra_size / 1024.0,
1233                100.0 * (total_size - raw) / raw
1234         );
1235         if(video_size + audio_size + subtitle_size + extra_size == 0){
1236             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1237         }
1238     }
1239 }
1240
1241 static void flush_encoders(void)
1242 {
1243     int i, ret;
1244
1245     for (i = 0; i < nb_output_streams; i++) {
1246         OutputStream   *ost = output_streams[i];
1247         AVCodecContext *enc = ost->st->codec;
1248         AVFormatContext *os = output_files[ost->file_index]->ctx;
1249         int stop_encoding = 0;
1250
1251         if (!ost->encoding_needed)
1252             continue;
1253
1254         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1255             continue;
1256         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1257             continue;
1258
1259         for (;;) {
1260             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1261             const char *desc;
1262             int64_t *size;
1263
1264             switch (ost->st->codec->codec_type) {
1265             case AVMEDIA_TYPE_AUDIO:
1266                 encode = avcodec_encode_audio2;
1267                 desc   = "Audio";
1268                 size   = &audio_size;
1269                 break;
1270             case AVMEDIA_TYPE_VIDEO:
1271                 encode = avcodec_encode_video2;
1272                 desc   = "Video";
1273                 size   = &video_size;
1274                 break;
1275             default:
1276                 stop_encoding = 1;
1277             }
1278
1279             if (encode) {
1280                 AVPacket pkt;
1281                 int got_packet;
1282                 av_init_packet(&pkt);
1283                 pkt.data = NULL;
1284                 pkt.size = 0;
1285
1286                 update_benchmark(NULL);
1287                 ret = encode(enc, &pkt, NULL, &got_packet);
1288                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1289                 if (ret < 0) {
1290                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1291                     exit_program(1);
1292                 }
1293                 *size += pkt.size;
1294                 if (ost->logfile && enc->stats_out) {
1295                     fprintf(ost->logfile, "%s", enc->stats_out);
1296                 }
1297                 if (!got_packet) {
1298                     stop_encoding = 1;
1299                     break;
1300                 }
1301                 if (pkt.pts != AV_NOPTS_VALUE)
1302                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1303                 if (pkt.dts != AV_NOPTS_VALUE)
1304                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1305                 write_frame(os, &pkt, ost);
1306             }
1307
1308             if (stop_encoding)
1309                 break;
1310         }
1311     }
1312 }
1313
1314 /*
1315  * Check whether a packet from ist should be written into ost at this time
1316  */
1317 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1318 {
1319     OutputFile *of = output_files[ost->file_index];
1320     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1321
1322     if (ost->source_index != ist_index)
1323         return 0;
1324
1325     if (of->start_time && ist->pts < of->start_time)
1326         return 0;
1327
1328     return 1;
1329 }
1330
1331 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1332 {
1333     OutputFile *of = output_files[ost->file_index];
1334     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1335     AVPicture pict;
1336     AVPacket opkt;
1337
1338     av_init_packet(&opkt);
1339
1340     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1341         !ost->copy_initial_nonkeyframes)
1342         return;
1343
1344     if (!ost->frame_number && ist->pts < of->start_time &&
1345         !ost->copy_prior_start)
1346         return;
1347
1348     if (of->recording_time != INT64_MAX &&
1349         ist->pts >= of->recording_time + of->start_time) {
1350         close_output_stream(ost);
1351         return;
1352     }
1353
1354     /* force the input stream PTS */
1355     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1356         audio_size += pkt->size;
1357     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1358         video_size += pkt->size;
1359         ost->sync_opts++;
1360     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1361         subtitle_size += pkt->size;
1362     }
1363
1364     if (pkt->pts != AV_NOPTS_VALUE)
1365         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1366     else
1367         opkt.pts = AV_NOPTS_VALUE;
1368
1369     if (pkt->dts == AV_NOPTS_VALUE)
1370         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1371     else
1372         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1373     opkt.dts -= ost_tb_start_time;
1374
1375     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1376     opkt.flags    = pkt->flags;
1377
1378     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1379     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1380        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1381        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1382        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1383        ) {
1384         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1385             opkt.destruct = av_destruct_packet;
1386     } else {
1387         opkt.data = pkt->data;
1388         opkt.size = pkt->size;
1389     }
1390
1391     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1392         /* store AVPicture in AVPacket, as expected by the output format */
1393         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1394         opkt.data = (uint8_t *)&pict;
1395         opkt.size = sizeof(AVPicture);
1396         opkt.flags |= AV_PKT_FLAG_KEY;
1397     }
1398
1399     write_frame(of->ctx, &opkt, ost);
1400     ost->st->codec->frame_number++;
1401     av_free_packet(&opkt);
1402 }
1403
1404 static void rate_emu_sleep(InputStream *ist)
1405 {
1406     if (input_files[ist->file_index]->rate_emu) {
1407         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1408         int64_t now = av_gettime() - ist->start;
1409         if (pts > now)
1410             av_usleep(pts - now);
1411     }
1412 }
1413
1414 int guess_input_channel_layout(InputStream *ist)
1415 {
1416     AVCodecContext *dec = ist->st->codec;
1417
1418     if (!dec->channel_layout) {
1419         char layout_name[256];
1420
1421         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1422         if (!dec->channel_layout)
1423             return 0;
1424         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1425                                      dec->channels, dec->channel_layout);
1426         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1427                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1428     }
1429     return 1;
1430 }
1431
1432 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1433 {
1434     AVFrame *decoded_frame;
1435     AVCodecContext *avctx = ist->st->codec;
1436     int i, ret, resample_changed;
1437     AVRational decoded_frame_tb;
1438
1439     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1440         return AVERROR(ENOMEM);
1441     else
1442         avcodec_get_frame_defaults(ist->decoded_frame);
1443     decoded_frame = ist->decoded_frame;
1444
1445     update_benchmark(NULL);
1446     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1447     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1448
1449     if (ret >= 0 && avctx->sample_rate <= 0) {
1450         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1451         ret = AVERROR_INVALIDDATA;
1452     }
1453
1454     if (!*got_output || ret < 0) {
1455         if (!pkt->size) {
1456             for (i = 0; i < ist->nb_filters; i++)
1457                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1458         }
1459         return ret;
1460     }
1461
1462 #if 1
1463     /* increment next_dts to use for the case where the input stream does not
1464        have timestamps or there are multiple frames in the packet */
1465     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1466                      avctx->sample_rate;
1467     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1468                      avctx->sample_rate;
1469 #endif
1470
1471     rate_emu_sleep(ist);
1472
1473     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1474                        ist->resample_channels       != avctx->channels               ||
1475                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1476                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1477     if (resample_changed) {
1478         char layout1[64], layout2[64];
1479
1480         if (!guess_input_channel_layout(ist)) {
1481             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1482                    "layout for Input Stream #%d.%d\n", ist->file_index,
1483                    ist->st->index);
1484             exit_program(1);
1485         }
1486         decoded_frame->channel_layout = avctx->channel_layout;
1487
1488         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1489                                      ist->resample_channel_layout);
1490         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1491                                      decoded_frame->channel_layout);
1492
1493         av_log(NULL, AV_LOG_INFO,
1494                "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",
1495                ist->file_index, ist->st->index,
1496                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1497                ist->resample_channels, layout1,
1498                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1499                avctx->channels, layout2);
1500
1501         ist->resample_sample_fmt     = decoded_frame->format;
1502         ist->resample_sample_rate    = decoded_frame->sample_rate;
1503         ist->resample_channel_layout = decoded_frame->channel_layout;
1504         ist->resample_channels       = avctx->channels;
1505
1506         for (i = 0; i < nb_filtergraphs; i++)
1507             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1508                 FilterGraph *fg = filtergraphs[i];
1509                 int j;
1510                 if (configure_filtergraph(fg) < 0) {
1511                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1512                     exit_program(1);
1513                 }
1514                 for (j = 0; j < fg->nb_outputs; j++) {
1515                     OutputStream *ost = fg->outputs[j]->ost;
1516                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1517                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1518                         av_buffersink_set_frame_size(ost->filter->filter,
1519                                                      ost->st->codec->frame_size);
1520                 }
1521             }
1522     }
1523
1524     /* if the decoder provides a pts, use it instead of the last packet pts.
1525        the decoder could be delaying output by a packet or more. */
1526     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1527         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1528         decoded_frame_tb   = avctx->time_base;
1529     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1530         decoded_frame->pts = decoded_frame->pkt_pts;
1531         pkt->pts           = AV_NOPTS_VALUE;
1532         decoded_frame_tb   = ist->st->time_base;
1533     } else if (pkt->pts != AV_NOPTS_VALUE) {
1534         decoded_frame->pts = pkt->pts;
1535         pkt->pts           = AV_NOPTS_VALUE;
1536         decoded_frame_tb   = ist->st->time_base;
1537     }else {
1538         decoded_frame->pts = ist->dts;
1539         decoded_frame_tb   = AV_TIME_BASE_Q;
1540     }
1541     if (decoded_frame->pts != AV_NOPTS_VALUE)
1542         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1543                                           decoded_frame_tb,
1544                                           (AVRational){1, ist->st->codec->sample_rate});
1545     for (i = 0; i < ist->nb_filters; i++)
1546         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1547                                AV_BUFFERSRC_FLAG_PUSH);
1548
1549     decoded_frame->pts = AV_NOPTS_VALUE;
1550
1551     return ret;
1552 }
1553
1554 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1555 {
1556     AVFrame *decoded_frame;
1557     void *buffer_to_free = NULL;
1558     int i, ret = 0, resample_changed;
1559     int64_t best_effort_timestamp;
1560     AVRational *frame_sample_aspect;
1561     float quality;
1562
1563     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1564         return AVERROR(ENOMEM);
1565     else
1566         avcodec_get_frame_defaults(ist->decoded_frame);
1567     decoded_frame = ist->decoded_frame;
1568     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1569
1570     update_benchmark(NULL);
1571     ret = avcodec_decode_video2(ist->st->codec,
1572                                 decoded_frame, got_output, pkt);
1573     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1574     if (!*got_output || ret < 0) {
1575         if (!pkt->size) {
1576             for (i = 0; i < ist->nb_filters; i++)
1577                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1578         }
1579         return ret;
1580     }
1581
1582     quality = same_quant ? decoded_frame->quality : 0;
1583
1584     if(ist->top_field_first>=0)
1585         decoded_frame->top_field_first = ist->top_field_first;
1586
1587     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1588     if(best_effort_timestamp != AV_NOPTS_VALUE)
1589         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1590
1591     if (debug_ts) {
1592         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1593                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1594                 ist->st->index, av_ts2str(decoded_frame->pts),
1595                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1596                 best_effort_timestamp,
1597                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1598                 decoded_frame->key_frame, decoded_frame->pict_type);
1599     }
1600
1601     pkt->size = 0;
1602     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1603
1604     rate_emu_sleep(ist);
1605
1606     if (ist->st->sample_aspect_ratio.num)
1607         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1608
1609     resample_changed = ist->resample_width   != decoded_frame->width  ||
1610                        ist->resample_height  != decoded_frame->height ||
1611                        ist->resample_pix_fmt != decoded_frame->format;
1612     if (resample_changed) {
1613         av_log(NULL, AV_LOG_INFO,
1614                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1615                ist->file_index, ist->st->index,
1616                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1617                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1618
1619         ist->resample_width   = decoded_frame->width;
1620         ist->resample_height  = decoded_frame->height;
1621         ist->resample_pix_fmt = decoded_frame->format;
1622
1623         for (i = 0; i < nb_filtergraphs; i++)
1624             if (ist_in_filtergraph(filtergraphs[i], ist) &&
1625                 configure_filtergraph(filtergraphs[i]) < 0) {
1626                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1627                 exit_program(1);
1628             }
1629     }
1630
1631     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1632     for (i = 0; i < ist->nb_filters; i++) {
1633         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1634                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1635                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1636         // XXX what an ugly hack
1637         if (ist->filters[i]->graph->nb_outputs == 1)
1638             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
1639
1640         if (!frame_sample_aspect->num)
1641             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1642         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1643             FrameBuffer      *buf = decoded_frame->opaque;
1644             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1645                                         decoded_frame->data, decoded_frame->linesize,
1646                                         AV_PERM_READ | AV_PERM_PRESERVE,
1647                                         ist->st->codec->width, ist->st->codec->height,
1648                                         ist->st->codec->pix_fmt);
1649
1650             avfilter_copy_frame_props(fb, decoded_frame);
1651             fb->buf->priv           = buf;
1652             fb->buf->free           = filter_release_buffer;
1653
1654             av_assert0(buf->refcount>0);
1655             buf->refcount++;
1656             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1657                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1658                                  AV_BUFFERSRC_FLAG_NO_COPY |
1659                                  AV_BUFFERSRC_FLAG_PUSH);
1660         } else
1661         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1662             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1663             exit_program(1);
1664         }
1665
1666     }
1667
1668     av_free(buffer_to_free);
1669     return ret;
1670 }
1671
1672 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1673 {
1674     AVSubtitle subtitle;
1675     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1676                                           &subtitle, got_output, pkt);
1677     if (ret < 0 || !*got_output) {
1678         if (!pkt->size)
1679             sub2video_flush(ist);
1680         return ret;
1681     }
1682
1683     if (ist->fix_sub_duration) {
1684         if (ist->prev_sub.got_output) {
1685             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1686                                  1000, AV_TIME_BASE);
1687             if (end < ist->prev_sub.subtitle.end_display_time) {
1688                 av_log(ist->st->codec, AV_LOG_DEBUG,
1689                        "Subtitle duration reduced from %d to %d\n",
1690                        ist->prev_sub.subtitle.end_display_time, end);
1691                 ist->prev_sub.subtitle.end_display_time = end;
1692             }
1693         }
1694         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1695         FFSWAP(int,        ret,         ist->prev_sub.ret);
1696         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1697     }
1698
1699     sub2video_update(ist, &subtitle);
1700
1701     if (!*got_output || !subtitle.num_rects)
1702         return ret;
1703
1704     rate_emu_sleep(ist);
1705
1706     for (i = 0; i < nb_output_streams; i++) {
1707         OutputStream *ost = output_streams[i];
1708
1709         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1710             continue;
1711
1712         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1713     }
1714
1715     avsubtitle_free(&subtitle);
1716     return ret;
1717 }
1718
1719 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1720 static int output_packet(InputStream *ist, const AVPacket *pkt)
1721 {
1722     int ret = 0, i;
1723     int got_output;
1724
1725     AVPacket avpkt;
1726     if (!ist->saw_first_ts) {
1727         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;
1728         ist->pts = 0;
1729         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1730             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1731             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1732         }
1733         ist->saw_first_ts = 1;
1734     }
1735
1736     if (ist->next_dts == AV_NOPTS_VALUE)
1737         ist->next_dts = ist->dts;
1738     if (ist->next_pts == AV_NOPTS_VALUE)
1739         ist->next_pts = ist->pts;
1740
1741     if (pkt == NULL) {
1742         /* EOF handling */
1743         av_init_packet(&avpkt);
1744         avpkt.data = NULL;
1745         avpkt.size = 0;
1746         goto handle_eof;
1747     } else {
1748         avpkt = *pkt;
1749     }
1750
1751     if (pkt->dts != AV_NOPTS_VALUE) {
1752         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1753         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1754             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1755     }
1756
1757     // while we have more to decode or while the decoder did output something on EOF
1758     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1759         int duration;
1760     handle_eof:
1761
1762         ist->pts = ist->next_pts;
1763         ist->dts = ist->next_dts;
1764
1765         if (avpkt.size && avpkt.size != pkt->size) {
1766             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1767                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1768             ist->showed_multi_packet_warning = 1;
1769         }
1770
1771         switch (ist->st->codec->codec_type) {
1772         case AVMEDIA_TYPE_AUDIO:
1773             ret = decode_audio    (ist, &avpkt, &got_output);
1774             break;
1775         case AVMEDIA_TYPE_VIDEO:
1776             ret = decode_video    (ist, &avpkt, &got_output);
1777             if (avpkt.duration) {
1778                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1779             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1780                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1781                 duration = ((int64_t)AV_TIME_BASE *
1782                                 ist->st->codec->time_base.num * ticks) /
1783                                 ist->st->codec->time_base.den;
1784             } else
1785                 duration = 0;
1786
1787             if(ist->dts != AV_NOPTS_VALUE && duration) {
1788                 ist->next_dts += duration;
1789             }else
1790                 ist->next_dts = AV_NOPTS_VALUE;
1791
1792             if (got_output)
1793                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1794             break;
1795         case AVMEDIA_TYPE_SUBTITLE:
1796             ret = transcode_subtitles(ist, &avpkt, &got_output);
1797             break;
1798         default:
1799             return -1;
1800         }
1801
1802         if (ret < 0)
1803             return ret;
1804
1805         avpkt.dts=
1806         avpkt.pts= AV_NOPTS_VALUE;
1807
1808         // touch data and size only if not EOF
1809         if (pkt) {
1810             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1811                 ret = avpkt.size;
1812             avpkt.data += ret;
1813             avpkt.size -= ret;
1814         }
1815         if (!got_output) {
1816             continue;
1817         }
1818     }
1819
1820     /* handle stream copy */
1821     if (!ist->decoding_needed) {
1822         rate_emu_sleep(ist);
1823         ist->dts = ist->next_dts;
1824         switch (ist->st->codec->codec_type) {
1825         case AVMEDIA_TYPE_AUDIO:
1826             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1827                              ist->st->codec->sample_rate;
1828             break;
1829         case AVMEDIA_TYPE_VIDEO:
1830             if (pkt->duration) {
1831                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1832             } else if(ist->st->codec->time_base.num != 0) {
1833                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1834                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1835                                   ist->st->codec->time_base.num * ticks) /
1836                                   ist->st->codec->time_base.den;
1837             }
1838             break;
1839         }
1840         ist->pts = ist->dts;
1841         ist->next_pts = ist->next_dts;
1842     }
1843     for (i = 0; pkt && 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_streamcopy(ist, ost, pkt);
1850     }
1851
1852     return 0;
1853 }
1854
1855 static void print_sdp(void)
1856 {
1857     char sdp[2048];
1858     int i;
1859     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1860
1861     if (!avc)
1862         exit_program(1);
1863     for (i = 0; i < nb_output_files; i++)
1864         avc[i] = output_files[i]->ctx;
1865
1866     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1867     printf("SDP:\n%s\n", sdp);
1868     fflush(stdout);
1869     av_freep(&avc);
1870 }
1871
1872 static int init_input_stream(int ist_index, char *error, int error_len)
1873 {
1874     InputStream *ist = input_streams[ist_index];
1875
1876     if (ist->decoding_needed) {
1877         AVCodec *codec = ist->dec;
1878         if (!codec) {
1879             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1880                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1881             return AVERROR(EINVAL);
1882         }
1883
1884         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1885         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1886             ist->st->codec->get_buffer     = codec_get_buffer;
1887             ist->st->codec->release_buffer = codec_release_buffer;
1888             ist->st->codec->opaque         = &ist->buffer_pool;
1889         }
1890
1891         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1892             av_dict_set(&ist->opts, "threads", "auto", 0);
1893         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1894             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1895                     ist->file_index, ist->st->index);
1896             return AVERROR(EINVAL);
1897         }
1898         assert_codec_experimental(ist->st->codec, 0);
1899         assert_avoptions(ist->opts);
1900     }
1901
1902     ist->next_pts = AV_NOPTS_VALUE;
1903     ist->next_dts = AV_NOPTS_VALUE;
1904     ist->is_start = 1;
1905
1906     return 0;
1907 }
1908
1909 static InputStream *get_input_stream(OutputStream *ost)
1910 {
1911     if (ost->source_index >= 0)
1912         return input_streams[ost->source_index];
1913     return NULL;
1914 }
1915
1916 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1917                                     AVCodecContext *avctx)
1918 {
1919     char *p;
1920     int n = 1, i;
1921     int64_t t;
1922
1923     for (p = kf; *p; p++)
1924         if (*p == ',')
1925             n++;
1926     ost->forced_kf_count = n;
1927     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1928     if (!ost->forced_kf_pts) {
1929         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1930         exit_program(1);
1931     }
1932
1933     p = kf;
1934     for (i = 0; i < n; i++) {
1935         char *next = strchr(p, ',');
1936
1937         if (next)
1938             *next++ = 0;
1939
1940         t = parse_time_or_die("force_key_frames", p, 1);
1941         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1942
1943         p = next;
1944     }
1945 }
1946
1947 static void report_new_stream(int input_index, AVPacket *pkt)
1948 {
1949     InputFile *file = input_files[input_index];
1950     AVStream *st = file->ctx->streams[pkt->stream_index];
1951
1952     if (pkt->stream_index < file->nb_streams_warn)
1953         return;
1954     av_log(file->ctx, AV_LOG_WARNING,
1955            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1956            av_get_media_type_string(st->codec->codec_type),
1957            input_index, pkt->stream_index,
1958            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1959     file->nb_streams_warn = pkt->stream_index + 1;
1960 }
1961
1962 static int transcode_init(void)
1963 {
1964     int ret = 0, i, j, k;
1965     AVFormatContext *oc;
1966     AVCodecContext *codec;
1967     OutputStream *ost;
1968     InputStream *ist;
1969     char error[1024];
1970     int want_sdp = 1;
1971
1972     /* init framerate emulation */
1973     for (i = 0; i < nb_input_files; i++) {
1974         InputFile *ifile = input_files[i];
1975         if (ifile->rate_emu)
1976             for (j = 0; j < ifile->nb_streams; j++)
1977                 input_streams[j + ifile->ist_index]->start = av_gettime();
1978     }
1979
1980     /* output stream init */
1981     for (i = 0; i < nb_output_files; i++) {
1982         oc = output_files[i]->ctx;
1983         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1984             av_dump_format(oc, i, oc->filename, 1);
1985             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1986             return AVERROR(EINVAL);
1987         }
1988     }
1989
1990     /* init complex filtergraphs */
1991     for (i = 0; i < nb_filtergraphs; i++)
1992         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1993             return ret;
1994
1995     /* for each output stream, we compute the right encoding parameters */
1996     for (i = 0; i < nb_output_streams; i++) {
1997         AVCodecContext *icodec = NULL;
1998         ost = output_streams[i];
1999         oc  = output_files[ost->file_index]->ctx;
2000         ist = get_input_stream(ost);
2001
2002         if (ost->attachment_filename)
2003             continue;
2004
2005         codec  = ost->st->codec;
2006
2007         if (ist) {
2008             icodec = ist->st->codec;
2009
2010             ost->st->disposition          = ist->st->disposition;
2011             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2012             codec->chroma_sample_location = icodec->chroma_sample_location;
2013         }
2014
2015         if (ost->stream_copy) {
2016             uint64_t extra_size;
2017
2018             av_assert0(ist && !ost->filter);
2019
2020             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2021
2022             if (extra_size > INT_MAX) {
2023                 return AVERROR(EINVAL);
2024             }
2025
2026             /* if stream_copy is selected, no need to decode or encode */
2027             codec->codec_id   = icodec->codec_id;
2028             codec->codec_type = icodec->codec_type;
2029
2030             if (!codec->codec_tag) {
2031                 if (!oc->oformat->codec_tag ||
2032                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2033                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2034                     codec->codec_tag = icodec->codec_tag;
2035             }
2036
2037             codec->bit_rate       = icodec->bit_rate;
2038             codec->rc_max_rate    = icodec->rc_max_rate;
2039             codec->rc_buffer_size = icodec->rc_buffer_size;
2040             codec->field_order    = icodec->field_order;
2041             codec->extradata      = av_mallocz(extra_size);
2042             if (!codec->extradata) {
2043                 return AVERROR(ENOMEM);
2044             }
2045             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2046             codec->extradata_size= icodec->extradata_size;
2047             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2048
2049             codec->time_base = ist->st->time_base;
2050             /*
2051              * Avi is a special case here because it supports variable fps but
2052              * having the fps and timebase differe significantly adds quite some
2053              * overhead
2054              */
2055             if(!strcmp(oc->oformat->name, "avi")) {
2056                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2057                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2058                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2059                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2060                      || copy_tb==2){
2061                     codec->time_base.num = ist->st->r_frame_rate.den;
2062                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2063                     codec->ticks_per_frame = 2;
2064                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2065                                  && av_q2d(ist->st->time_base) < 1.0/500
2066                     || copy_tb==0){
2067                     codec->time_base = icodec->time_base;
2068                     codec->time_base.num *= icodec->ticks_per_frame;
2069                     codec->time_base.den *= 2;
2070                     codec->ticks_per_frame = 2;
2071                 }
2072             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2073                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2074                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2075                       && strcmp(oc->oformat->name, "f4v")
2076             ) {
2077                 if(   copy_tb<0 && icodec->time_base.den
2078                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2079                                 && av_q2d(ist->st->time_base) < 1.0/500
2080                    || copy_tb==0){
2081                     codec->time_base = icodec->time_base;
2082                     codec->time_base.num *= icodec->ticks_per_frame;
2083                 }
2084             }
2085
2086             if(ost->frame_rate.num)
2087                 codec->time_base = av_inv_q(ost->frame_rate);
2088
2089             av_reduce(&codec->time_base.num, &codec->time_base.den,
2090                         codec->time_base.num, codec->time_base.den, INT_MAX);
2091
2092             switch (codec->codec_type) {
2093             case AVMEDIA_TYPE_AUDIO:
2094                 if (audio_volume != 256) {
2095                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2096                     exit_program(1);
2097                 }
2098                 codec->channel_layout     = icodec->channel_layout;
2099                 codec->sample_rate        = icodec->sample_rate;
2100                 codec->channels           = icodec->channels;
2101                 codec->frame_size         = icodec->frame_size;
2102                 codec->audio_service_type = icodec->audio_service_type;
2103                 codec->block_align        = icodec->block_align;
2104                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2105                     codec->block_align= 0;
2106                 if(codec->codec_id == AV_CODEC_ID_AC3)
2107                     codec->block_align= 0;
2108                 break;
2109             case AVMEDIA_TYPE_VIDEO:
2110                 codec->pix_fmt            = icodec->pix_fmt;
2111                 codec->width              = icodec->width;
2112                 codec->height             = icodec->height;
2113                 codec->has_b_frames       = icodec->has_b_frames;
2114                 if (!codec->sample_aspect_ratio.num) {
2115                     codec->sample_aspect_ratio   =
2116                     ost->st->sample_aspect_ratio =
2117                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2118                         ist->st->codec->sample_aspect_ratio.num ?
2119                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2120                 }
2121                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2122                 break;
2123             case AVMEDIA_TYPE_SUBTITLE:
2124                 codec->width  = icodec->width;
2125                 codec->height = icodec->height;
2126                 break;
2127             case AVMEDIA_TYPE_DATA:
2128             case AVMEDIA_TYPE_ATTACHMENT:
2129                 break;
2130             default:
2131                 abort();
2132             }
2133         } else {
2134             if (!ost->enc)
2135                 ost->enc = avcodec_find_encoder(codec->codec_id);
2136             if (!ost->enc) {
2137                 /* should only happen when a default codec is not present. */
2138                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2139                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2140                 ret = AVERROR(EINVAL);
2141                 goto dump_format;
2142             }
2143
2144             if (ist)
2145                 ist->decoding_needed++;
2146             ost->encoding_needed = 1;
2147
2148             if (!ost->filter &&
2149                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2150                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2151                     FilterGraph *fg;
2152                     fg = init_simple_filtergraph(ist, ost);
2153                     if (configure_filtergraph(fg)) {
2154                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2155                         exit(1);
2156                     }
2157             }
2158
2159             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2160                 if (ost->filter && !ost->frame_rate.num)
2161                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2162                 if (ist && !ost->frame_rate.num)
2163                     ost->frame_rate = ist->framerate;
2164                 if (ist && !ost->frame_rate.num)
2165                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2166 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2167                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2168                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2169                     ost->frame_rate = ost->enc->supported_framerates[idx];
2170                 }
2171             }
2172
2173             switch (codec->codec_type) {
2174             case AVMEDIA_TYPE_AUDIO:
2175                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2176                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2177                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2178                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2179                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2180                 break;
2181             case AVMEDIA_TYPE_VIDEO:
2182                 codec->time_base = av_inv_q(ost->frame_rate);
2183                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2184                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2185                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2186                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2187                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2188                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2189                 }
2190                 for (j = 0; j < ost->forced_kf_count; j++)
2191                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2192                                                          AV_TIME_BASE_Q,
2193                                                          codec->time_base);
2194
2195                 codec->width  = ost->filter->filter->inputs[0]->w;
2196                 codec->height = ost->filter->filter->inputs[0]->h;
2197                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2198                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2199                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2200                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2201                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2202
2203                 if (!icodec ||
2204                     codec->width   != icodec->width  ||
2205                     codec->height  != icodec->height ||
2206                     codec->pix_fmt != icodec->pix_fmt) {
2207                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2208                 }
2209
2210                 if (ost->forced_keyframes)
2211                     parse_forced_key_frames(ost->forced_keyframes, ost,
2212                                             ost->st->codec);
2213                 break;
2214             case AVMEDIA_TYPE_SUBTITLE:
2215                 codec->time_base = (AVRational){1, 1000};
2216                 if (!codec->width) {
2217                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2218                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2219                 }
2220                 break;
2221             default:
2222                 abort();
2223                 break;
2224             }
2225             /* two pass mode */
2226             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2227                 char logfilename[1024];
2228                 FILE *f;
2229
2230                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2231                          ost->logfile_prefix ? ost->logfile_prefix :
2232                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2233                          i);
2234                 if (!strcmp(ost->enc->name, "libx264")) {
2235                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2236                 } else {
2237                     if (codec->flags & CODEC_FLAG_PASS2) {
2238                         char  *logbuffer;
2239                         size_t logbuffer_size;
2240                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2241                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2242                                    logfilename);
2243                             exit_program(1);
2244                         }
2245                         codec->stats_in = logbuffer;
2246                     }
2247                     if (codec->flags & CODEC_FLAG_PASS1) {
2248                         f = fopen(logfilename, "wb");
2249                         if (!f) {
2250                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2251                                 logfilename, strerror(errno));
2252                             exit_program(1);
2253                         }
2254                         ost->logfile = f;
2255                     }
2256                 }
2257             }
2258         }
2259     }
2260
2261     /* open each encoder */
2262     for (i = 0; i < nb_output_streams; i++) {
2263         ost = output_streams[i];
2264         if (ost->encoding_needed) {
2265             AVCodec      *codec = ost->enc;
2266             AVCodecContext *dec = NULL;
2267
2268             if ((ist = get_input_stream(ost)))
2269                 dec = ist->st->codec;
2270             if (dec && dec->subtitle_header) {
2271                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2272                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2273                 if (!ost->st->codec->subtitle_header) {
2274                     ret = AVERROR(ENOMEM);
2275                     goto dump_format;
2276                 }
2277                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2278                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2279             }
2280             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2281                 av_dict_set(&ost->opts, "threads", "auto", 0);
2282             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2283                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2284                         ost->file_index, ost->index);
2285                 ret = AVERROR(EINVAL);
2286                 goto dump_format;
2287             }
2288             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2289                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2290                 av_buffersink_set_frame_size(ost->filter->filter,
2291                                              ost->st->codec->frame_size);
2292             assert_codec_experimental(ost->st->codec, 1);
2293             assert_avoptions(ost->opts);
2294             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2295                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2296                                              " It takes bits/s as argument, not kbits/s\n");
2297             extra_size += ost->st->codec->extradata_size;
2298
2299             if (ost->st->codec->me_threshold)
2300                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2301         }
2302     }
2303
2304     /* init input streams */
2305     for (i = 0; i < nb_input_streams; i++)
2306         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2307             goto dump_format;
2308
2309     /* discard unused programs */
2310     for (i = 0; i < nb_input_files; i++) {
2311         InputFile *ifile = input_files[i];
2312         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2313             AVProgram *p = ifile->ctx->programs[j];
2314             int discard  = AVDISCARD_ALL;
2315
2316             for (k = 0; k < p->nb_stream_indexes; k++)
2317                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2318                     discard = AVDISCARD_DEFAULT;
2319                     break;
2320                 }
2321             p->discard = discard;
2322         }
2323     }
2324
2325     /* open files and write file headers */
2326     for (i = 0; i < nb_output_files; i++) {
2327         oc = output_files[i]->ctx;
2328         oc->interrupt_callback = int_cb;
2329         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2330             char errbuf[128];
2331             const char *errbuf_ptr = errbuf;
2332             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2333                 errbuf_ptr = strerror(AVUNERROR(ret));
2334             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2335             ret = AVERROR(EINVAL);
2336             goto dump_format;
2337         }
2338 //         assert_avoptions(output_files[i]->opts);
2339         if (strcmp(oc->oformat->name, "rtp")) {
2340             want_sdp = 0;
2341         }
2342     }
2343
2344  dump_format:
2345     /* dump the file output parameters - cannot be done before in case
2346        of stream copy */
2347     for (i = 0; i < nb_output_files; i++) {
2348         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2349     }
2350
2351     /* dump the stream mapping */
2352     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2353     for (i = 0; i < nb_input_streams; i++) {
2354         ist = input_streams[i];
2355
2356         for (j = 0; j < ist->nb_filters; j++) {
2357             if (ist->filters[j]->graph->graph_desc) {
2358                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2359                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2360                        ist->filters[j]->name);
2361                 if (nb_filtergraphs > 1)
2362                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2363                 av_log(NULL, AV_LOG_INFO, "\n");
2364             }
2365         }
2366     }
2367
2368     for (i = 0; i < nb_output_streams; i++) {
2369         ost = output_streams[i];
2370
2371         if (ost->attachment_filename) {
2372             /* an attached file */
2373             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2374                    ost->attachment_filename, ost->file_index, ost->index);
2375             continue;
2376         }
2377
2378         if (ost->filter && ost->filter->graph->graph_desc) {
2379             /* output from a complex graph */
2380             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2381             if (nb_filtergraphs > 1)
2382                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2383
2384             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2385                    ost->index, ost->enc ? ost->enc->name : "?");
2386             continue;
2387         }
2388
2389         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2390                input_streams[ost->source_index]->file_index,
2391                input_streams[ost->source_index]->st->index,
2392                ost->file_index,
2393                ost->index);
2394         if (ost->sync_ist != input_streams[ost->source_index])
2395             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2396                    ost->sync_ist->file_index,
2397                    ost->sync_ist->st->index);
2398         if (ost->stream_copy)
2399             av_log(NULL, AV_LOG_INFO, " (copy)");
2400         else
2401             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2402                    input_streams[ost->source_index]->dec->name : "?",
2403                    ost->enc ? ost->enc->name : "?");
2404         av_log(NULL, AV_LOG_INFO, "\n");
2405     }
2406
2407     if (ret) {
2408         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2409         return ret;
2410     }
2411
2412     if (want_sdp) {
2413         print_sdp();
2414     }
2415
2416     return 0;
2417 }
2418
2419 /**
2420  * @return 1 if there are still streams where more output is wanted,
2421  *         0 otherwise
2422  */
2423 static int need_output(void)
2424 {
2425     int i;
2426
2427     for (i = 0; i < nb_output_streams; i++) {
2428         OutputStream *ost    = output_streams[i];
2429         OutputFile *of       = output_files[ost->file_index];
2430         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2431
2432         if (ost->finished ||
2433             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2434             continue;
2435         if (ost->frame_number >= ost->max_frames) {
2436             int j;
2437             for (j = 0; j < of->ctx->nb_streams; j++)
2438                 close_output_stream(output_streams[of->ost_index + j]);
2439             continue;
2440         }
2441
2442         return 1;
2443     }
2444
2445     return 0;
2446 }
2447
2448 /**
2449  * Select the output stream to process.
2450  *
2451  * @return  selected output stream, or NULL if none available
2452  */
2453 static OutputStream *choose_output(void)
2454 {
2455     int i;
2456     int64_t opts_min = INT64_MAX;
2457     OutputStream *ost_min = NULL;
2458
2459     for (i = 0; i < nb_output_streams; i++) {
2460         OutputStream *ost = output_streams[i];
2461         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2462                                     AV_TIME_BASE_Q);
2463         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2464             opts_min = opts;
2465             ost_min  = ost;
2466         }
2467     }
2468     return ost_min;
2469 }
2470
2471 static int check_keyboard_interaction(int64_t cur_time)
2472 {
2473     int i, ret, key;
2474     static int64_t last_time;
2475     if (received_nb_signals)
2476         return AVERROR_EXIT;
2477     /* read_key() returns 0 on EOF */
2478     if(cur_time - last_time >= 100000 && !run_as_daemon){
2479         key =  read_key();
2480         last_time = cur_time;
2481     }else
2482         key = -1;
2483     if (key == 'q')
2484         return AVERROR_EXIT;
2485     if (key == '+') av_log_set_level(av_log_get_level()+10);
2486     if (key == '-') av_log_set_level(av_log_get_level()-10);
2487     if (key == 's') qp_hist     ^= 1;
2488     if (key == 'h'){
2489         if (do_hex_dump){
2490             do_hex_dump = do_pkt_dump = 0;
2491         } else if(do_pkt_dump){
2492             do_hex_dump = 1;
2493         } else
2494             do_pkt_dump = 1;
2495         av_log_set_level(AV_LOG_DEBUG);
2496     }
2497     if (key == 'c' || key == 'C'){
2498         char buf[4096], target[64], command[256], arg[256] = {0};
2499         double time;
2500         int k, n = 0;
2501         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2502         i = 0;
2503         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2504             if (k > 0)
2505                 buf[i++] = k;
2506         buf[i] = 0;
2507         if (k > 0 &&
2508             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2509             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2510                    target, time, command, arg);
2511             for (i = 0; i < nb_filtergraphs; i++) {
2512                 FilterGraph *fg = filtergraphs[i];
2513                 if (fg->graph) {
2514                     if (time < 0) {
2515                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2516                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2517                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2518                     } else {
2519                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2520                     }
2521                 }
2522             }
2523         } else {
2524             av_log(NULL, AV_LOG_ERROR,
2525                    "Parse error, at least 3 arguments were expected, "
2526                    "only %d given in string '%s'\n", n, buf);
2527         }
2528     }
2529     if (key == 'd' || key == 'D'){
2530         int debug=0;
2531         if(key == 'D') {
2532             debug = input_streams[0]->st->codec->debug<<1;
2533             if(!debug) debug = 1;
2534             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2535                 debug += debug;
2536         }else
2537             if(scanf("%d", &debug)!=1)
2538                 fprintf(stderr,"error parsing debug value\n");
2539         for(i=0;i<nb_input_streams;i++) {
2540             input_streams[i]->st->codec->debug = debug;
2541         }
2542         for(i=0;i<nb_output_streams;i++) {
2543             OutputStream *ost = output_streams[i];
2544             ost->st->codec->debug = debug;
2545         }
2546         if(debug) av_log_set_level(AV_LOG_DEBUG);
2547         fprintf(stderr,"debug=%d\n", debug);
2548     }
2549     if (key == '?'){
2550         fprintf(stderr, "key    function\n"
2551                         "?      show this help\n"
2552                         "+      increase verbosity\n"
2553                         "-      decrease verbosity\n"
2554                         "c      Send command to filtergraph\n"
2555                         "D      cycle through available debug modes\n"
2556                         "h      dump packets/hex press to cycle through the 3 states\n"
2557                         "q      quit\n"
2558                         "s      Show QP histogram\n"
2559         );
2560     }
2561     return 0;
2562 }
2563
2564 #if HAVE_PTHREADS
2565 static void *input_thread(void *arg)
2566 {
2567     InputFile *f = arg;
2568     int ret = 0;
2569
2570     while (!transcoding_finished && ret >= 0) {
2571         AVPacket pkt;
2572         ret = av_read_frame(f->ctx, &pkt);
2573
2574         if (ret == AVERROR(EAGAIN)) {
2575             av_usleep(10000);
2576             ret = 0;
2577             continue;
2578         } else if (ret < 0)
2579             break;
2580
2581         pthread_mutex_lock(&f->fifo_lock);
2582         while (!av_fifo_space(f->fifo))
2583             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2584
2585         av_dup_packet(&pkt);
2586         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2587
2588         pthread_mutex_unlock(&f->fifo_lock);
2589     }
2590
2591     f->finished = 1;
2592     return NULL;
2593 }
2594
2595 static void free_input_threads(void)
2596 {
2597     int i;
2598
2599     if (nb_input_files == 1)
2600         return;
2601
2602     transcoding_finished = 1;
2603
2604     for (i = 0; i < nb_input_files; i++) {
2605         InputFile *f = input_files[i];
2606         AVPacket pkt;
2607
2608         if (!f->fifo || f->joined)
2609             continue;
2610
2611         pthread_mutex_lock(&f->fifo_lock);
2612         while (av_fifo_size(f->fifo)) {
2613             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2614             av_free_packet(&pkt);
2615         }
2616         pthread_cond_signal(&f->fifo_cond);
2617         pthread_mutex_unlock(&f->fifo_lock);
2618
2619         pthread_join(f->thread, NULL);
2620         f->joined = 1;
2621
2622         while (av_fifo_size(f->fifo)) {
2623             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2624             av_free_packet(&pkt);
2625         }
2626         av_fifo_free(f->fifo);
2627     }
2628 }
2629
2630 static int init_input_threads(void)
2631 {
2632     int i, ret;
2633
2634     if (nb_input_files == 1)
2635         return 0;
2636
2637     for (i = 0; i < nb_input_files; i++) {
2638         InputFile *f = input_files[i];
2639
2640         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2641             return AVERROR(ENOMEM);
2642
2643         pthread_mutex_init(&f->fifo_lock, NULL);
2644         pthread_cond_init (&f->fifo_cond, NULL);
2645
2646         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2647             return AVERROR(ret);
2648     }
2649     return 0;
2650 }
2651
2652 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2653 {
2654     int ret = 0;
2655
2656     pthread_mutex_lock(&f->fifo_lock);
2657
2658     if (av_fifo_size(f->fifo)) {
2659         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2660         pthread_cond_signal(&f->fifo_cond);
2661     } else {
2662         if (f->finished)
2663             ret = AVERROR_EOF;
2664         else
2665             ret = AVERROR(EAGAIN);
2666     }
2667
2668     pthread_mutex_unlock(&f->fifo_lock);
2669
2670     return ret;
2671 }
2672 #endif
2673
2674 static int get_input_packet(InputFile *f, AVPacket *pkt)
2675 {
2676 #if HAVE_PTHREADS
2677     if (nb_input_files > 1)
2678         return get_input_packet_mt(f, pkt);
2679 #endif
2680     return av_read_frame(f->ctx, pkt);
2681 }
2682
2683 static int got_eagain(void)
2684 {
2685     int i;
2686     for (i = 0; i < nb_output_streams; i++)
2687         if (output_streams[i]->unavailable)
2688             return 1;
2689     return 0;
2690 }
2691
2692 static void reset_eagain(void)
2693 {
2694     int i;
2695     for (i = 0; i < nb_input_files; i++)
2696         input_files[i]->eagain = 0;
2697     for (i = 0; i < nb_output_streams; i++)
2698         output_streams[i]->unavailable = 0;
2699 }
2700
2701 /**
2702  * @return
2703  * - 0 -- one packet was read and processed
2704  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2705  *   this function should be called again
2706  * - AVERROR_EOF -- this function should not be called again
2707  */
2708 static int process_input(int file_index)
2709 {
2710     InputFile *ifile = input_files[file_index];
2711     AVFormatContext *is;
2712     InputStream *ist;
2713     AVPacket pkt;
2714     int ret, i, j;
2715
2716     is  = ifile->ctx;
2717     ret = get_input_packet(ifile, &pkt);
2718
2719     if (ret == AVERROR(EAGAIN)) {
2720         ifile->eagain = 1;
2721         return ret;
2722     }
2723     if (ret < 0) {
2724         if (ret != AVERROR_EOF) {
2725             print_error(is->filename, ret);
2726             if (exit_on_error)
2727                 exit_program(1);
2728         }
2729         ifile->eof_reached = 1;
2730
2731         for (i = 0; i < ifile->nb_streams; i++) {
2732             ist = input_streams[ifile->ist_index + i];
2733             if (ist->decoding_needed)
2734                 output_packet(ist, NULL);
2735
2736             /* mark all outputs that don't go through lavfi as finished */
2737             for (j = 0; j < nb_output_streams; j++) {
2738                 OutputStream *ost = output_streams[j];
2739
2740                 if (ost->source_index == ifile->ist_index + i &&
2741                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2742                     close_output_stream(ost);
2743             }
2744         }
2745
2746         return AVERROR(EAGAIN);
2747     }
2748
2749     reset_eagain();
2750
2751     if (do_pkt_dump) {
2752         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2753                          is->streams[pkt.stream_index]);
2754     }
2755     /* the following test is needed in case new streams appear
2756        dynamically in stream : we ignore them */
2757     if (pkt.stream_index >= ifile->nb_streams) {
2758         report_new_stream(file_index, &pkt);
2759         goto discard_packet;
2760     }
2761
2762     ist = input_streams[ifile->ist_index + pkt.stream_index];
2763     if (ist->discard)
2764         goto discard_packet;
2765
2766     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2767         int64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2768         int64_t stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2769         ist->wrap_correction_done = 1;
2770
2771         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2772             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2773             ist->wrap_correction_done = 0;
2774         }
2775         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2776             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2777             ist->wrap_correction_done = 0;
2778         }
2779     }
2780
2781     if (pkt.dts != AV_NOPTS_VALUE)
2782         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2783     if (pkt.pts != AV_NOPTS_VALUE)
2784         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2785
2786     if (pkt.pts != AV_NOPTS_VALUE)
2787         pkt.pts *= ist->ts_scale;
2788     if (pkt.dts != AV_NOPTS_VALUE)
2789         pkt.dts *= ist->ts_scale;
2790
2791     if (debug_ts) {
2792         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2793                 "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:%"PRId64"\n",
2794                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2795                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2796                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2797                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2798                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2799                 input_files[ist->file_index]->ts_offset);
2800     }
2801
2802     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2803         !copy_ts) {
2804         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2805         int64_t delta   = pkt_dts - ist->next_dts;
2806         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2807         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2808             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2809                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2810             pkt_dts+1<ist->pts){
2811             ifile->ts_offset -= delta;
2812             av_log(NULL, AV_LOG_DEBUG,
2813                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2814                    delta, ifile->ts_offset);
2815             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2816             if (pkt.pts != AV_NOPTS_VALUE)
2817                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2818         }
2819         } else {
2820             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2821                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2822                ) {
2823                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2824                 pkt.dts = AV_NOPTS_VALUE;
2825             }
2826             if (pkt.pts != AV_NOPTS_VALUE){
2827                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2828                 delta   = pkt_pts - ist->next_dts;
2829                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2830                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2831                    ) {
2832                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2833                     pkt.pts = AV_NOPTS_VALUE;
2834                 }
2835             }
2836         }
2837     }
2838
2839     sub2video_heartbeat(ist, pkt.pts);
2840
2841     ret = output_packet(ist, &pkt);
2842     if (ret < 0) {
2843         char buf[128];
2844         av_strerror(ret, buf, sizeof(buf));
2845         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2846                 ist->file_index, ist->st->index, buf);
2847         if (exit_on_error)
2848             exit_program(1);
2849     }
2850
2851 discard_packet:
2852     av_free_packet(&pkt);
2853
2854     return 0;
2855 }
2856
2857 /**
2858  * Perform a step of transcoding for the specified filter graph.
2859  *
2860  * @param[in]  graph     filter graph to consider
2861  * @param[out] best_ist  input stream where a frame would allow to continue
2862  * @return  0 for success, <0 for error
2863  */
2864 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2865 {
2866     int i, ret;
2867     int nb_requests, nb_requests_max = 0;
2868     InputFilter *ifilter;
2869     InputStream *ist;
2870
2871     *best_ist = NULL;
2872     ret = avfilter_graph_request_oldest(graph->graph);
2873     if (ret >= 0)
2874         return reap_filters();
2875
2876     if (ret == AVERROR_EOF) {
2877         ret = reap_filters();
2878         for (i = 0; i < graph->nb_outputs; i++)
2879             close_output_stream(graph->outputs[i]->ost);
2880         return ret;
2881     }
2882     if (ret != AVERROR(EAGAIN))
2883         return ret;
2884
2885     for (i = 0; i < graph->nb_inputs; i++) {
2886         ifilter = graph->inputs[i];
2887         ist = ifilter->ist;
2888         if (input_files[ist->file_index]->eagain ||
2889             input_files[ist->file_index]->eof_reached)
2890             continue;
2891         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2892         if (nb_requests > nb_requests_max) {
2893             nb_requests_max = nb_requests;
2894             *best_ist = ist;
2895         }
2896     }
2897
2898     if (!*best_ist)
2899         for (i = 0; i < graph->nb_outputs; i++)
2900             graph->outputs[i]->ost->unavailable = 1;
2901
2902     return 0;
2903 }
2904
2905 /**
2906  * Run a single step of transcoding.
2907  *
2908  * @return  0 for success, <0 for error
2909  */
2910 static int transcode_step(void)
2911 {
2912     OutputStream *ost;
2913     InputStream  *ist;
2914     int ret;
2915
2916     ost = choose_output();
2917     if (!ost) {
2918         if (got_eagain()) {
2919             reset_eagain();
2920             av_usleep(10000);
2921             return 0;
2922         }
2923         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2924         return AVERROR_EOF;
2925     }
2926
2927     if (ost->filter) {
2928         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2929             return ret;
2930         if (!ist)
2931             return 0;
2932     } else {
2933         av_assert0(ost->source_index >= 0);
2934         ist = input_streams[ost->source_index];
2935     }
2936
2937     ret = process_input(ist->file_index);
2938     if (ret == AVERROR(EAGAIN)) {
2939         if (input_files[ist->file_index]->eagain)
2940             ost->unavailable = 1;
2941         return 0;
2942     }
2943     if (ret < 0)
2944         return ret == AVERROR_EOF ? 0 : ret;
2945
2946     return reap_filters();
2947 }
2948
2949 /*
2950  * The following code is the main loop of the file converter
2951  */
2952 static int transcode(void)
2953 {
2954     int ret, i;
2955     AVFormatContext *os;
2956     OutputStream *ost;
2957     InputStream *ist;
2958     int64_t timer_start;
2959
2960     ret = transcode_init();
2961     if (ret < 0)
2962         goto fail;
2963
2964     if (stdin_interaction) {
2965         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2966     }
2967
2968     timer_start = av_gettime();
2969
2970 #if HAVE_PTHREADS
2971     if ((ret = init_input_threads()) < 0)
2972         goto fail;
2973 #endif
2974
2975     while (!received_sigterm) {
2976         int64_t cur_time= av_gettime();
2977
2978         /* if 'q' pressed, exits */
2979         if (stdin_interaction)
2980             if (check_keyboard_interaction(cur_time) < 0)
2981                 break;
2982
2983         /* check if there's any stream where output is still needed */
2984         if (!need_output()) {
2985             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2986             break;
2987         }
2988
2989         ret = transcode_step();
2990         if (ret < 0) {
2991             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2992                 continue;
2993
2994             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2995             break;
2996         }
2997
2998         /* dump report by using the output first video and audio streams */
2999         print_report(0, timer_start, cur_time);
3000     }
3001 #if HAVE_PTHREADS
3002     free_input_threads();
3003 #endif
3004
3005     /* at the end of stream, we must flush the decoder buffers */
3006     for (i = 0; i < nb_input_streams; i++) {
3007         ist = input_streams[i];
3008         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3009             output_packet(ist, NULL);
3010         }
3011     }
3012     flush_encoders();
3013
3014     term_exit();
3015
3016     /* write the trailer if needed and close file */
3017     for (i = 0; i < nb_output_files; i++) {
3018         os = output_files[i]->ctx;
3019         av_write_trailer(os);
3020     }
3021
3022     /* dump report by using the first video and audio streams */
3023     print_report(1, timer_start, av_gettime());
3024
3025     /* close each encoder */
3026     for (i = 0; i < nb_output_streams; i++) {
3027         ost = output_streams[i];
3028         if (ost->encoding_needed) {
3029             av_freep(&ost->st->codec->stats_in);
3030             avcodec_close(ost->st->codec);
3031         }
3032     }
3033
3034     /* close each decoder */
3035     for (i = 0; i < nb_input_streams; i++) {
3036         ist = input_streams[i];
3037         if (ist->decoding_needed) {
3038             avcodec_close(ist->st->codec);
3039         }
3040     }
3041
3042     /* finished ! */
3043     ret = 0;
3044
3045  fail:
3046 #if HAVE_PTHREADS
3047     free_input_threads();
3048 #endif
3049
3050     if (output_streams) {
3051         for (i = 0; i < nb_output_streams; i++) {
3052             ost = output_streams[i];
3053             if (ost) {
3054                 if (ost->stream_copy)
3055                     av_freep(&ost->st->codec->extradata);
3056                 if (ost->logfile) {
3057                     fclose(ost->logfile);
3058                     ost->logfile = NULL;
3059                 }
3060                 av_freep(&ost->st->codec->subtitle_header);
3061                 av_free(ost->forced_kf_pts);
3062                 av_dict_free(&ost->opts);
3063             }
3064         }
3065     }
3066     return ret;
3067 }
3068
3069
3070 static int64_t getutime(void)
3071 {
3072 #if HAVE_GETRUSAGE
3073     struct rusage rusage;
3074
3075     getrusage(RUSAGE_SELF, &rusage);
3076     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3077 #elif HAVE_GETPROCESSTIMES
3078     HANDLE proc;
3079     FILETIME c, e, k, u;
3080     proc = GetCurrentProcess();
3081     GetProcessTimes(proc, &c, &e, &k, &u);
3082     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3083 #else
3084     return av_gettime();
3085 #endif
3086 }
3087
3088 static int64_t getmaxrss(void)
3089 {
3090 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3091     struct rusage rusage;
3092     getrusage(RUSAGE_SELF, &rusage);
3093     return (int64_t)rusage.ru_maxrss * 1024;
3094 #elif HAVE_GETPROCESSMEMORYINFO
3095     HANDLE proc;
3096     PROCESS_MEMORY_COUNTERS memcounters;
3097     proc = GetCurrentProcess();
3098     memcounters.cb = sizeof(memcounters);
3099     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3100     return memcounters.PeakPagefileUsage;
3101 #else
3102     return 0;
3103 #endif
3104 }
3105
3106 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3107 {
3108 }
3109
3110 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3111 {
3112     int idx = locate_option(argc, argv, options, "cpuflags");
3113     if (idx && argv[idx + 1])
3114         opt_cpuflags(NULL, "cpuflags", argv[idx + 1]);
3115 }
3116
3117 int main(int argc, char **argv)
3118 {
3119     OptionsContext o = { 0 };
3120     int64_t ti;
3121
3122     reset_options(&o, 0);
3123
3124     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3125
3126     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3127     parse_loglevel(argc, argv, options);
3128
3129     if(argc>1 && !strcmp(argv[1], "-d")){
3130         run_as_daemon=1;
3131         av_log_set_callback(log_callback_null);
3132         argc--;
3133         argv++;
3134     }
3135
3136     avcodec_register_all();
3137 #if CONFIG_AVDEVICE
3138     avdevice_register_all();
3139 #endif
3140     avfilter_register_all();
3141     av_register_all();
3142     avformat_network_init();
3143
3144     show_banner(argc, argv, options);
3145
3146     term_init();
3147
3148     parse_cpuflags(argc, argv, options);
3149
3150     /* parse options */
3151     parse_options(&o, argc, argv, options, opt_output_file);
3152
3153     if (nb_output_files <= 0 && nb_input_files == 0) {
3154         show_usage();
3155         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3156         exit_program(1);
3157     }
3158
3159     /* file converter / grab */
3160     if (nb_output_files <= 0) {
3161         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3162         exit_program(1);
3163     }
3164
3165 //     if (nb_input_files == 0) {
3166 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3167 //         exit_program(1);
3168 //     }
3169
3170     current_time = ti = getutime();
3171     if (transcode() < 0)
3172         exit_program(1);
3173     ti = getutime() - ti;
3174     if (do_benchmark) {
3175         int maxrss = getmaxrss() / 1024;
3176         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3177     }
3178
3179     exit_program(0);
3180     return 0;
3181 }