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/channel_layout.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/time.h>
  73 #include <sys/types.h>
  74 #include <sys/resource.h>
  75 #elif HAVE_GETPROCESSTIMES
  76 #include <windows.h>
  77 #endif
  78 #if HAVE_GETPROCESSMEMORYINFO
  79 #include <windows.h>
  80 #include <psapi.h>
  81 #endif
  82
  83 #if HAVE_SYS_SELECT_H
  84 #include <sys/select.h>
  85 #endif
  86
  87 #if HAVE_TERMIOS_H
  88 #include <fcntl.h>
  89 #include <sys/ioctl.h>
  90 #include <sys/time.h>
  91 #include <termios.h>
  92 #elif HAVE_KBHIT
  93 #include <conio.h>
  94 #endif
  95
  96 #if HAVE_PTHREADS
  97 #include <pthread.h>
  98 #endif
  99
 100 #include <time.h>
 101
 102 #include "ffmpeg.h"
 103 #include "cmdutils.h"
 104
 105 #include "libavutil/avassert.h"
 106
 107 const char program_name[] = "ffmpeg";
 108 const int program_birth_year = 2000;
 109
 110 static FILE *vstats_file;
 111
 112 const char *const forced_keyframes_const_names[] = {
 113     "n",
 114     "n_forced",
 115     "prev_forced_n",
 116     "prev_forced_t",
 117     "t",
 118     NULL
 119 };
 120
 121 static void do_video_stats(OutputStream *ost, int frame_size);
 122 static int64_t getutime(void);
 123
 124 static int run_as_daemon  = 0;
 125 static int64_t video_size = 0;
 126 static int64_t audio_size = 0;
 127 static int64_t subtitle_size = 0;
 128 static int64_t extra_size = 0;
 129 static int nb_frames_dup = 0;
 130 static int nb_frames_drop = 0;
 131
 132 static int current_time;
 133 AVIOContext *progress_avio = NULL;
 134
 135 static uint8_t *subtitle_out;
 136
 137 #if HAVE_PTHREADS
 138 /* signal to input threads that they should exit; set by the main thread */
 139 static int transcoding_finished;
 140 #endif
 141
 142 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 143
 144 InputStream **input_streams = NULL;
 145 int        nb_input_streams = 0;
 146 InputFile   **input_files   = NULL;
 147 int        nb_input_files   = 0;
 148
 149 OutputStream **output_streams = NULL;
 150 int         nb_output_streams = 0;
 151 OutputFile   **output_files   = NULL;
 152 int         nb_output_files   = 0;
 153
 154 FilterGraph **filtergraphs;
 155 int        nb_filtergraphs;
 156
 157 #if HAVE_TERMIOS_H
 158
 159 /* init terminal so that we can grab keys */
 160 static struct termios oldtty;
 161 static int restore_tty;
 162 #endif
 163
 164
 165 /* sub2video hack:
 166    Convert subtitles to video with alpha to insert them in filter graphs.
 167    This is a temporary solution until libavfilter gets real subtitles support.
 168  */
 169
 170
 171
 172 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 173                                 AVSubtitleRect *r)
 174 {
 175     uint32_t *pal, *dst2;
 176     uint8_t *src, *src2;
 177     int x, y;
 178
 179     if (r->type != SUBTITLE_BITMAP) {
 180         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 181         return;
 182     }
 183     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 184         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 185         return;
 186     }
 187
 188     dst += r->y * dst_linesize + r->x * 4;
 189     src = r->pict.data[0];
 190     pal = (uint32_t *)r->pict.data[1];
 191     for (y = 0; y < r->h; y++) {
 192         dst2 = (uint32_t *)dst;
 193         src2 = src;
 194         for (x = 0; x < r->w; x++)
 195             *(dst2++) = pal[*(src2++)];
 196         dst += dst_linesize;
 197         src += r->pict.linesize[0];
 198     }
 199 }
 200
 201 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 202 {
 203     AVFilterBufferRef *ref = ist->sub2video.ref;
 204     int i;
 205
 206     ist->sub2video.last_pts = ref->pts = pts;
 207     for (i = 0; i < ist->nb_filters; i++)
 208         av_buffersrc_add_ref(ist->filters[i]->filter,
 209                              avfilter_ref_buffer(ref, ~0),
 210                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
 211                              AV_BUFFERSRC_FLAG_NO_COPY |
 212                              AV_BUFFERSRC_FLAG_PUSH);
 213 }
 214
 215 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 216 {
 217     int w = ist->sub2video.w, h = ist->sub2video.h;
 218     AVFilterBufferRef *ref = ist->sub2video.ref;
 219     int8_t *dst;
 220     int     dst_linesize;
 221     int num_rects, i;
 222     int64_t pts, end_pts;
 223
 224     if (!ref)
 225         return;
 226     if (sub) {
 227         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
 228                                  AV_TIME_BASE_Q, ist->st->time_base);
 229         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
 230                                  AV_TIME_BASE_Q, ist->st->time_base);
 231         num_rects = sub->num_rects;
 232     } else {
 233         pts       = ist->sub2video.end_pts;
 234         end_pts   = INT64_MAX;
 235         num_rects = 0;
 236     }
 237     dst          = ref->data    [0];
 238     dst_linesize = ref->linesize[0];
 239     memset(dst, 0, h * dst_linesize);
 240     for (i = 0; i < num_rects; i++)
 241         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 242     sub2video_push_ref(ist, pts);
 243     ist->sub2video.end_pts = end_pts;
 244 }
 245
 246 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 247 {
 248     InputFile *infile = input_files[ist->file_index];
 249     int i, j, nb_reqs;
 250     int64_t pts2;
 251
 252     /* When a frame is read from a file, examine all sub2video streams in
 253        the same file and send the sub2video frame again. Otherwise, decoded
 254        video frames could be accumulating in the filter graph while a filter
 255        (possibly overlay) is desperately waiting for a subtitle frame. */
 256     for (i = 0; i < infile->nb_streams; i++) {
 257         InputStream *ist2 = input_streams[infile->ist_index + i];
 258         if (!ist2->sub2video.ref)
 259             continue;
 260         /* subtitles seem to be usually muxed ahead of other streams;
 261            if not, substracting a larger time here is necessary */
 262         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 263         /* do not send the heartbeat frame if the subtitle is already ahead */
 264         if (pts2 <= ist2->sub2video.last_pts)
 265             continue;
 266         if (pts2 >= ist2->sub2video.end_pts)
 267             sub2video_update(ist2, NULL);
 268         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 269             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 270         if (nb_reqs)
 271             sub2video_push_ref(ist2, pts2);
 272     }
 273 }
 274
 275 static void sub2video_flush(InputStream *ist)
 276 {
 277     int i;
 278
 279     for (i = 0; i < ist->nb_filters; i++)
 280         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 281 }
 282
 283 /* end of sub2video hack */
 284
 285 void term_exit(void)
 286 {
 287     av_log(NULL, AV_LOG_QUIET, "%s", "");
 288 #if HAVE_TERMIOS_H
 289     if(restore_tty)
 290         tcsetattr (0, TCSANOW, &oldtty);
 291 #endif
 292 }
 293
 294 static volatile int received_sigterm = 0;
 295 static volatile int received_nb_signals = 0;
 296
 297 static void
 298 sigterm_handler(int sig)
 299 {
 300     received_sigterm = sig;
 301     received_nb_signals++;
 302     term_exit();
 303     if(received_nb_signals > 3)
 304         exit(123);
 305 }
 306
 307 void term_init(void)
 308 {
 309 #if HAVE_TERMIOS_H
 310     if(!run_as_daemon){
 311         struct termios tty;
 312         int istty = 1;
 313 #if HAVE_ISATTY
 314         istty = isatty(0) && isatty(2);
 315 #endif
 316         if (istty && tcgetattr (0, &tty) == 0) {
 317             oldtty = tty;
 318             restore_tty = 1;
 319             atexit(term_exit);
 320
 321             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 322                              |INLCR|IGNCR|ICRNL|IXON);
 323             tty.c_oflag |= OPOST;
 324             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 325             tty.c_cflag &= ~(CSIZE|PARENB);
 326             tty.c_cflag |= CS8;
 327             tty.c_cc[VMIN] = 1;
 328             tty.c_cc[VTIME] = 0;
 329
 330             tcsetattr (0, TCSANOW, &tty);
 331         }
 332         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 333     }
 334 #endif
 335     avformat_network_deinit();
 336
 337     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 338     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 339 #ifdef SIGXCPU
 340     signal(SIGXCPU, sigterm_handler);
 341 #endif
 342 }
 343
 344 /* read a key without blocking */
 345 static int read_key(void)
 346 {
 347     unsigned char ch;
 348 #if HAVE_TERMIOS_H
 349     int n = 1;
 350     struct timeval tv;
 351     fd_set rfds;
 352
 353     FD_ZERO(&rfds);
 354     FD_SET(0, &rfds);
 355     tv.tv_sec = 0;
 356     tv.tv_usec = 0;
 357     n = select(1, &rfds, NULL, NULL, &tv);
 358     if (n > 0) {
 359         n = read(0, &ch, 1);
 360         if (n == 1)
 361             return ch;
 362
 363         return n;
 364     }
 365 #elif HAVE_KBHIT
 366 #    if HAVE_PEEKNAMEDPIPE
 367     static int is_pipe;
 368     static HANDLE input_handle;
 369     DWORD dw, nchars;
 370     if(!input_handle){
 371         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 372         is_pipe = !GetConsoleMode(input_handle, &dw);
 373     }
 374
 375     if (stdin->_cnt > 0) {
 376         read(0, &ch, 1);
 377         return ch;
 378     }
 379     if (is_pipe) {
 380         /* When running under a GUI, you will end here. */
 381         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
 382             // input pipe may have been closed by the program that ran ffmpeg
 383             return -1;
 384         }
 385         //Read it
 386         if(nchars != 0) {
 387             read(0, &ch, 1);
 388             return ch;
 389         }else{
 390             return -1;
 391         }
 392     }
 393 #    endif
 394     if(kbhit())
 395         return(getch());
 396 #endif
 397     return -1;
 398 }
 399
 400 static int decode_interrupt_cb(void *ctx)
 401 {
 402     return received_nb_signals > 1;
 403 }
 404
 405 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 406
 407 static void exit_program(void)
 408 {
 409     int i, j;
 410
 411     for (i = 0; i < nb_filtergraphs; i++) {
 412         avfilter_graph_free(&filtergraphs[i]->graph);
 413         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 414             av_freep(&filtergraphs[i]->inputs[j]->name);
 415             av_freep(&filtergraphs[i]->inputs[j]);
 416         }
 417         av_freep(&filtergraphs[i]->inputs);
 418         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 419             av_freep(&filtergraphs[i]->outputs[j]->name);
 420             av_freep(&filtergraphs[i]->outputs[j]);
 421         }
 422         av_freep(&filtergraphs[i]->outputs);
 423         av_freep(&filtergraphs[i]);
 424     }
 425     av_freep(&filtergraphs);
 426
 427     av_freep(&subtitle_out);
 428
 429     /* close files */
 430     for (i = 0; i < nb_output_files; i++) {
 431         AVFormatContext *s = output_files[i]->ctx;
 432         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 433             avio_close(s->pb);
 434         avformat_free_context(s);
 435         av_dict_free(&output_files[i]->opts);
 436         av_freep(&output_files[i]);
 437     }
 438     for (i = 0; i < nb_output_streams; i++) {
 439         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 440         while (bsfc) {
 441             AVBitStreamFilterContext *next = bsfc->next;
 442             av_bitstream_filter_close(bsfc);
 443             bsfc = next;
 444         }
 445         output_streams[i]->bitstream_filters = NULL;
 446         avcodec_free_frame(&output_streams[i]->filtered_frame);
 447
 448         av_freep(&output_streams[i]->forced_keyframes);
 449         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
 450         av_freep(&output_streams[i]->avfilter);
 451         av_freep(&output_streams[i]->logfile_prefix);
 452         av_freep(&output_streams[i]);
 453     }
 454     for (i = 0; i < nb_input_files; i++) {
 455         avformat_close_input(&input_files[i]->ctx);
 456         av_freep(&input_files[i]);
 457     }
 458     for (i = 0; i < nb_input_streams; i++) {
 459         avcodec_free_frame(&input_streams[i]->decoded_frame);
 460         av_dict_free(&input_streams[i]->opts);
 461         free_buffer_pool(&input_streams[i]->buffer_pool);
 462         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
 463         av_freep(&input_streams[i]->filters);
 464         av_freep(&input_streams[i]);
 465     }
 466
 467     if (vstats_file)
 468         fclose(vstats_file);
 469     av_free(vstats_filename);
 470
 471     av_freep(&input_streams);
 472     av_freep(&input_files);
 473     av_freep(&output_streams);
 474     av_freep(&output_files);
 475
 476     uninit_opts();
 477
 478     avfilter_uninit();
 479     avformat_network_deinit();
 480
 481     if (received_sigterm) {
 482         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 483                (int) received_sigterm);
 484     }
 485 }
 486
 487 void assert_avoptions(AVDictionary *m)
 488 {
 489     AVDictionaryEntry *t;
 490     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 491         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 492         exit(1);
 493     }
 494 }
 495
 496 static void abort_codec_experimental(AVCodec *c, int encoder)
 497 {
 498     exit(1);
 499 }
 500
 501 static void update_benchmark(const char *fmt, ...)
 502 {
 503     if (do_benchmark_all) {
 504         int64_t t = getutime();
 505         va_list va;
 506         char buf[1024];
 507
 508         if (fmt) {
 509             va_start(va, fmt);
 510             vsnprintf(buf, sizeof(buf), fmt, va);
 511             va_end(va);
 512             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 513         }
 514         current_time = t;
 515     }
 516 }
 517
 518 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 519 {
 520     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 521     AVCodecContext          *avctx = ost->st->codec;
 522     int ret;
 523
 524     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 525         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 526         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 527
 528     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
 529         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 530         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
 531             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
 532                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
 533             if(pkt->pts >= pkt->dts)
 534                 pkt->pts = FFMAX(pkt->pts, max);
 535             pkt->dts = max;
 536         }
 537     }
 538
 539     /*
 540      * Audio encoders may split the packets --  #frames in != #packets out.
 541      * But there is no reordering, so we can limit the number of output packets
 542      * by simply dropping them here.
 543      * Counting encoded video frames needs to be done separately because of
 544      * reordering, see do_video_out()
 545      */
 546     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 547         if (ost->frame_number >= ost->max_frames) {
 548             av_free_packet(pkt);
 549             return;
 550         }
 551         ost->frame_number++;
 552     }
 553
 554     while (bsfc) {
 555         AVPacket new_pkt = *pkt;
 556         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 557                                            &new_pkt.data, &new_pkt.size,
 558                                            pkt->data, pkt->size,
 559                                            pkt->flags & AV_PKT_FLAG_KEY);
 560         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 561             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
 562             if(t) {
 563                 memcpy(t, new_pkt.data, new_pkt.size);
 564                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 565                 new_pkt.data = t;
 566                 a = 1;
 567             } else
 568                 a = AVERROR(ENOMEM);
 569         }
 570         if (a > 0) {
 571             av_free_packet(pkt);
 572             new_pkt.destruct = av_destruct_packet;
 573         } else if (a < 0) {
 574             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 575                    bsfc->filter->name, pkt->stream_index,
 576                    avctx->codec ? avctx->codec->name : "copy");
 577             print_error("", a);
 578             if (exit_on_error)
 579                 exit(1);
 580         }
 581         *pkt = new_pkt;
 582
 583         bsfc = bsfc->next;
 584     }
 585
 586     pkt->stream_index = ost->index;
 587
 588     if (debug_ts) {
 589         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 590                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 591                 av_get_media_type_string(ost->st->codec->codec_type),
 592                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 593                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 594                 pkt->size
 595               );
 596     }
 597
 598     ret = av_interleaved_write_frame(s, pkt);
 599     if (ret < 0) {
 600         print_error("av_interleaved_write_frame()", ret);
 601         exit(1);
 602     }
 603 }
 604
 605 static void close_output_stream(OutputStream *ost)
 606 {
 607     OutputFile *of = output_files[ost->file_index];
 608
 609     ost->finished = 1;
 610     if (of->shortest) {
 611         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
 612         of->recording_time = FFMIN(of->recording_time, end);
 613     }
 614 }
 615
 616 static int check_recording_time(OutputStream *ost)
 617 {
 618     OutputFile *of = output_files[ost->file_index];
 619
 620     if (of->recording_time != INT64_MAX &&
 621         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 622                       AV_TIME_BASE_Q) >= 0) {
 623         close_output_stream(ost);
 624         return 0;
 625     }
 626     return 1;
 627 }
 628
 629 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 630                          AVFrame *frame)
 631 {
 632     AVCodecContext *enc = ost->st->codec;
 633     AVPacket pkt;
 634     int got_packet = 0;
 635
 636     av_init_packet(&pkt);
 637     pkt.data = NULL;
 638     pkt.size = 0;
 639
 640     if (!check_recording_time(ost))
 641         return;
 642
 643     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 644         frame->pts = ost->sync_opts;
 645     ost->sync_opts = frame->pts + frame->nb_samples;
 646
 647     av_assert0(pkt.size || !pkt.data);
 648     update_benchmark(NULL);
 649     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 650         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 651         exit(1);
 652     }
 653     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 654
 655     if (got_packet) {
 656         if (pkt.pts != AV_NOPTS_VALUE)
 657             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 658         if (pkt.dts != AV_NOPTS_VALUE)
 659             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 660         if (pkt.duration > 0)
 661             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 662
 663         if (debug_ts) {
 664             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 665                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 666                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 667                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 668         }
 669
 670         audio_size += pkt.size;
 671         write_frame(s, &pkt, ost);
 672
 673         av_free_packet(&pkt);
 674     }
 675 }
 676
 677 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
 678 {
 679     AVCodecContext *dec;
 680     AVPicture *picture2;
 681     AVPicture picture_tmp;
 682     uint8_t *buf = 0;
 683
 684     dec = ist->st->codec;
 685
 686     /* deinterlace : must be done before any resize */
 687     if (do_deinterlace) {
 688         int size;
 689
 690         /* create temporary picture */
 691         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
 692         if (size < 0)
 693             return;
 694         buf  = av_malloc(size);
 695         if (!buf)
 696             return;
 697
 698         picture2 = &picture_tmp;
 699         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
 700
 701         if (avpicture_deinterlace(picture2, picture,
 702                                  dec->pix_fmt, dec->width, dec->height) < 0) {
 703             /* if error, do not deinterlace */
 704             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
 705             av_free(buf);
 706             buf = NULL;
 707             picture2 = picture;
 708         }
 709     } else {
 710         picture2 = picture;
 711     }
 712
 713     if (picture != picture2)
 714         *picture = *picture2;
 715     *bufp = buf;
 716 }
 717
 718 static void do_subtitle_out(AVFormatContext *s,
 719                             OutputStream *ost,
 720                             InputStream *ist,
 721                             AVSubtitle *sub)
 722 {
 723     int subtitle_out_max_size = 1024 * 1024;
 724     int subtitle_out_size, nb, i;
 725     AVCodecContext *enc;
 726     AVPacket pkt;
 727     int64_t pts;
 728
 729     if (sub->pts == AV_NOPTS_VALUE) {
 730         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 731         if (exit_on_error)
 732             exit(1);
 733         return;
 734     }
 735
 736     enc = ost->st->codec;
 737
 738     if (!subtitle_out) {
 739         subtitle_out = av_malloc(subtitle_out_max_size);
 740     }
 741
 742     /* Note: DVB subtitle need one packet to draw them and one other
 743        packet to clear them */
 744     /* XXX: signal it in the codec context ? */
 745     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 746         nb = 2;
 747     else
 748         nb = 1;
 749
 750     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 751     pts = sub->pts - output_files[ost->file_index]->start_time;
 752     for (i = 0; i < nb; i++) {
 753         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 754         if (!check_recording_time(ost))
 755             return;
 756
 757         sub->pts = pts;
 758         // start_display_time is required to be 0
 759         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 760         sub->end_display_time  -= sub->start_display_time;
 761         sub->start_display_time = 0;
 762         if (i == 1)
 763             sub->num_rects = 0;
 764         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 765                                                     subtitle_out_max_size, sub);
 766         if (subtitle_out_size < 0) {
 767             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 768             exit(1);
 769         }
 770
 771         av_init_packet(&pkt);
 772         pkt.data = subtitle_out;
 773         pkt.size = subtitle_out_size;
 774         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 775         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 776         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 777             /* XXX: the pts correction is handled here. Maybe handling
 778                it in the codec would be better */
 779             if (i == 0)
 780                 pkt.pts += 90 * sub->start_display_time;
 781             else
 782                 pkt.pts += 90 * sub->end_display_time;
 783         }
 784         subtitle_size += pkt.size;
 785         write_frame(s, &pkt, ost);
 786     }
 787 }
 788
 789 static void do_video_out(AVFormatContext *s,
 790                          OutputStream *ost,
 791                          AVFrame *in_picture)
 792 {
 793     int ret, format_video_sync;
 794     AVPacket pkt;
 795     AVCodecContext *enc = ost->st->codec;
 796     int nb_frames, i;
 797     double sync_ipts, delta;
 798     double duration = 0;
 799     int frame_size = 0;
 800     InputStream *ist = NULL;
 801
 802     if (ost->source_index >= 0)
 803         ist = input_streams[ost->source_index];
 804
 805     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 806         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 807
 808     sync_ipts = in_picture->pts;
 809     delta = sync_ipts - ost->sync_opts + duration;
 810
 811     /* by default, we output a single frame */
 812     nb_frames = 1;
 813
 814     format_video_sync = video_sync_method;
 815     if (format_video_sync == VSYNC_AUTO)
 816         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 817
 818     switch (format_video_sync) {
 819     case VSYNC_CFR:
 820         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 821         if (delta < -1.1)
 822             nb_frames = 0;
 823         else if (delta > 1.1)
 824             nb_frames = lrintf(delta);
 825         break;
 826     case VSYNC_VFR:
 827         if (delta <= -0.6)
 828             nb_frames = 0;
 829         else if (delta > 0.6)
 830             ost->sync_opts = lrint(sync_ipts);
 831         break;
 832     case VSYNC_DROP:
 833     case VSYNC_PASSTHROUGH:
 834         ost->sync_opts = lrint(sync_ipts);
 835         break;
 836     default:
 837         av_assert0(0);
 838     }
 839
 840     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 841     if (nb_frames == 0) {
 842         nb_frames_drop++;
 843         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 844         return;
 845     } else if (nb_frames > 1) {
 846         if (nb_frames > dts_error_threshold * 30) {
 847             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 848             nb_frames_drop++;
 849             return;
 850         }
 851         nb_frames_dup += nb_frames - 1;
 852         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 853     }
 854
 855   /* duplicates frame if needed */
 856   for (i = 0; i < nb_frames; i++) {
 857     av_init_packet(&pkt);
 858     pkt.data = NULL;
 859     pkt.size = 0;
 860
 861     in_picture->pts = ost->sync_opts;
 862
 863     if (!check_recording_time(ost))
 864         return;
 865
 866     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 867         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 868         /* raw pictures are written as AVPicture structure to
 869            avoid any copies. We support temporarily the older
 870            method. */
 871         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 872         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 873         if (enc->coded_frame->interlaced_frame)
 874             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 875         else
 876             enc->field_order = AV_FIELD_PROGRESSIVE;
 877         pkt.data   = (uint8_t *)in_picture;
 878         pkt.size   =  sizeof(AVPicture);
 879         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 880         pkt.flags |= AV_PKT_FLAG_KEY;
 881
 882         video_size += pkt.size;
 883         write_frame(s, &pkt, ost);
 884     } else {
 885         int got_packet, forced_keyframe = 0;
 886         AVFrame big_picture;
 887         double pts_time;
 888
 889         big_picture = *in_picture;
 890         /* better than nothing: use input picture interlaced
 891            settings */
 892         big_picture.interlaced_frame = in_picture->interlaced_frame;
 893         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
 894             if (ost->top_field_first == -1)
 895                 big_picture.top_field_first = in_picture->top_field_first;
 896             else
 897                 big_picture.top_field_first = !!ost->top_field_first;
 898         }
 899
 900         if (big_picture.interlaced_frame) {
 901             if (enc->codec->id == AV_CODEC_ID_MJPEG)
 902                 enc->field_order = big_picture.top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 903             else
 904                 enc->field_order = big_picture.top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 905         } else
 906             enc->field_order = AV_FIELD_PROGRESSIVE;
 907
 908         big_picture.quality = ost->st->codec->global_quality;
 909         if (!enc->me_threshold)
 910             big_picture.pict_type = 0;
 911
 912         pts_time = big_picture.pts != AV_NOPTS_VALUE ?
 913             big_picture.pts * av_q2d(enc->time_base) : NAN;
 914         if (ost->forced_kf_index < ost->forced_kf_count &&
 915             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 916             ost->forced_kf_index++;
 917             forced_keyframe = 1;
 918         } else if (ost->forced_keyframes_pexpr) {
 919             double res;
 920             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
 921             res = av_expr_eval(ost->forced_keyframes_pexpr,
 922                                ost->forced_keyframes_expr_const_values, NULL);
 923             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
 924                     ost->forced_keyframes_expr_const_values[FKF_N],
 925                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
 926                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
 927                     ost->forced_keyframes_expr_const_values[FKF_T],
 928                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
 929                     res);
 930             if (res) {
 931                 forced_keyframe = 1;
 932                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
 933                     ost->forced_keyframes_expr_const_values[FKF_N];
 934                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
 935                     ost->forced_keyframes_expr_const_values[FKF_T];
 936                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
 937             }
 938
 939             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
 940         }
 941         if (forced_keyframe) {
 942             big_picture.pict_type = AV_PICTURE_TYPE_I;
 943             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
 944         }
 945
 946         update_benchmark(NULL);
 947         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
 948         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 949         if (ret < 0) {
 950             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 951             exit(1);
 952         }
 953
 954         if (got_packet) {
 955             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 956                 pkt.pts = ost->sync_opts;
 957
 958             if (pkt.pts != AV_NOPTS_VALUE)
 959                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 960             if (pkt.dts != AV_NOPTS_VALUE)
 961                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 962
 963             if (debug_ts) {
 964                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 965                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 966                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 967                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 968             }
 969
 970             frame_size = pkt.size;
 971             video_size += pkt.size;
 972             write_frame(s, &pkt, ost);
 973             av_free_packet(&pkt);
 974
 975             /* if two pass, output log */
 976             if (ost->logfile && enc->stats_out) {
 977                 fprintf(ost->logfile, "%s", enc->stats_out);
 978             }
 979         }
 980     }
 981     ost->sync_opts++;
 982     /*
 983      * For video, number of frames in == number of packets out.
 984      * But there may be reordering, so we can't throw away frames on encoder
 985      * flush, we need to limit them here, before they go into encoder.
 986      */
 987     ost->frame_number++;
 988   }
 989
 990     if (vstats_filename && frame_size)
 991         do_video_stats(ost, frame_size);
 992 }
 993
 994 static double psnr(double d)
 995 {
 996     return -10.0 * log(d) / log(10.0);
 997 }
 998
 999 static void do_video_stats(OutputStream *ost, int frame_size)
1000 {
1001     AVCodecContext *enc;
1002     int frame_number;
1003     double ti1, bitrate, avg_bitrate;
1004
1005     /* this is executed just the first time do_video_stats is called */
1006     if (!vstats_file) {
1007         vstats_file = fopen(vstats_filename, "w");
1008         if (!vstats_file) {
1009             perror("fopen");
1010             exit(1);
1011         }
1012     }
1013
1014     enc = ost->st->codec;
1015     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1016         frame_number = ost->st->nb_frames;
1017         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1018         if (enc->flags&CODEC_FLAG_PSNR)
1019             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1020
1021         fprintf(vstats_file,"f_size= %6d ", frame_size);
1022         /* compute pts value */
1023         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1024         if (ti1 < 0.01)
1025             ti1 = 0.01;
1026
1027         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1028         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1029         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1030                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1031         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1032     }
1033 }
1034
1035 /**
1036  * Get and encode new output from any of the filtergraphs, without causing
1037  * activity.
1038  *
1039  * @return  0 for success, <0 for severe errors
1040  */
1041 static int reap_filters(void)
1042 {
1043     AVFilterBufferRef *picref;
1044     AVFrame *filtered_frame = NULL;
1045     int i;
1046     int64_t frame_pts;
1047
1048     /* Reap all buffers present in the buffer sinks */
1049     for (i = 0; i < nb_output_streams; i++) {
1050         OutputStream *ost = output_streams[i];
1051         OutputFile    *of = output_files[ost->file_index];
1052         int ret = 0;
1053
1054         if (!ost->filter)
1055             continue;
1056
1057         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1058             return AVERROR(ENOMEM);
1059         } else
1060             avcodec_get_frame_defaults(ost->filtered_frame);
1061         filtered_frame = ost->filtered_frame;
1062
1063         while (1) {
1064             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1065                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1066             if (ret < 0) {
1067                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1068                     char buf[256];
1069                     av_strerror(ret, buf, sizeof(buf));
1070                     av_log(NULL, AV_LOG_WARNING,
1071                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1072                 }
1073                 break;
1074             }
1075             frame_pts = AV_NOPTS_VALUE;
1076             if (picref->pts != AV_NOPTS_VALUE) {
1077                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1078                                                 ost->filter->filter->inputs[0]->time_base,
1079                                                 ost->st->codec->time_base) -
1080                                     av_rescale_q(of->start_time,
1081                                                 AV_TIME_BASE_Q,
1082                                                 ost->st->codec->time_base);
1083
1084                 if (of->start_time && filtered_frame->pts < 0) {
1085                     avfilter_unref_buffer(picref);
1086                     continue;
1087                 }
1088             }
1089             //if (ost->source_index >= 0)
1090             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1091
1092
1093             switch (ost->filter->filter->inputs[0]->type) {
1094             case AVMEDIA_TYPE_VIDEO:
1095                 avfilter_copy_buf_props(filtered_frame, picref);
1096                 filtered_frame->pts = frame_pts;
1097                 if (!ost->frame_aspect_ratio)
1098                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1099
1100                 do_video_out(of->ctx, ost, filtered_frame);
1101                 break;
1102             case AVMEDIA_TYPE_AUDIO:
1103                 avfilter_copy_buf_props(filtered_frame, picref);
1104                 filtered_frame->pts = frame_pts;
1105                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1106                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1107                     av_log(NULL, AV_LOG_ERROR,
1108                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1109                     break;
1110                 }
1111                 do_audio_out(of->ctx, ost, filtered_frame);
1112                 break;
1113             default:
1114                 // TODO support subtitle filters
1115                 av_assert0(0);
1116             }
1117
1118             avfilter_unref_buffer(picref);
1119         }
1120     }
1121
1122     return 0;
1123 }
1124
1125 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1126 {
1127     char buf[1024];
1128     AVBPrint buf_script;
1129     OutputStream *ost;
1130     AVFormatContext *oc;
1131     int64_t total_size;
1132     AVCodecContext *enc;
1133     int frame_number, vid, i;
1134     double bitrate;
1135     int64_t pts = INT64_MIN;
1136     static int64_t last_time = -1;
1137     static int qp_histogram[52];
1138     int hours, mins, secs, us;
1139
1140     if (!print_stats && !is_last_report && !progress_avio)
1141         return;
1142
1143     if (!is_last_report) {
1144         if (last_time == -1) {
1145             last_time = cur_time;
1146             return;
1147         }
1148         if ((cur_time - last_time) < 500000)
1149             return;
1150         last_time = cur_time;
1151     }
1152
1153
1154     oc = output_files[0]->ctx;
1155
1156     total_size = avio_size(oc->pb);
1157     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1158         total_size = avio_tell(oc->pb);
1159
1160     buf[0] = '\0';
1161     vid = 0;
1162     av_bprint_init(&buf_script, 0, 1);
1163     for (i = 0; i < nb_output_streams; i++) {
1164         float q = -1;
1165         ost = output_streams[i];
1166         enc = ost->st->codec;
1167         if (!ost->stream_copy && enc->coded_frame)
1168             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1169         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1170             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1171             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1172                        ost->file_index, ost->index, q);
1173         }
1174         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1175             float fps, t = (cur_time-timer_start) / 1000000.0;
1176
1177             frame_number = ost->frame_number;
1178             fps = t > 1 ? frame_number / t : 0;
1179             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1180                      frame_number, fps < 9.95, fps, q);
1181             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1182             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1183             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1184                        ost->file_index, ost->index, q);
1185             if (is_last_report)
1186                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1187             if (qp_hist) {
1188                 int j;
1189                 int qp = lrintf(q);
1190                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1191                     qp_histogram[qp]++;
1192                 for (j = 0; j < 32; j++)
1193                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1194             }
1195             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1196                 int j;
1197                 double error, error_sum = 0;
1198                 double scale, scale_sum = 0;
1199                 double p;
1200                 char type[3] = { 'Y','U','V' };
1201                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1202                 for (j = 0; j < 3; j++) {
1203                     if (is_last_report) {
1204                         error = enc->error[j];
1205                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1206                     } else {
1207                         error = enc->coded_frame->error[j];
1208                         scale = enc->width * enc->height * 255.0 * 255.0;
1209                     }
1210                     if (j)
1211                         scale /= 4;
1212                     error_sum += error;
1213                     scale_sum += scale;
1214                     p = psnr(error / scale);
1215                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1216                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1217                                ost->file_index, ost->index, type[i] | 32, p);
1218                 }
1219                 p = psnr(error_sum / scale_sum);
1220                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1221                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1222                            ost->file_index, ost->index, p);
1223             }
1224             vid = 1;
1225         }
1226         /* compute min output value */
1227         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1228             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1229                                           ost->st->time_base, AV_TIME_BASE_Q));
1230     }
1231
1232     secs = pts / AV_TIME_BASE;
1233     us = pts % AV_TIME_BASE;
1234     mins = secs / 60;
1235     secs %= 60;
1236     hours = mins / 60;
1237     mins %= 60;
1238
1239     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1240
1241     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1242                                  "size=N/A time=");
1243     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1244                                  "size=%8.0fkB time=", total_size / 1024.0);
1245     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1246              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1247              (100 * us) / AV_TIME_BASE);
1248     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1249                               "bitrate=N/A");
1250     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1251                               "bitrate=%6.1fkbits/s", bitrate);
1252     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1253     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1254     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1255     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1256                hours, mins, secs, us);
1257
1258     if (nb_frames_dup || nb_frames_drop)
1259         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1260                 nb_frames_dup, nb_frames_drop);
1261     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1262     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1263
1264     if (print_stats || is_last_report) {
1265     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1266
1267     fflush(stderr);
1268     }
1269
1270     if (progress_avio) {
1271         av_bprintf(&buf_script, "progress=%s\n",
1272                    is_last_report ? "end" : "continue");
1273         avio_write(progress_avio, buf_script.str,
1274                    FFMIN(buf_script.len, buf_script.size - 1));
1275         avio_flush(progress_avio);
1276         av_bprint_finalize(&buf_script, NULL);
1277         if (is_last_report) {
1278             avio_close(progress_avio);
1279             progress_avio = NULL;
1280         }
1281     }
1282
1283     if (is_last_report) {
1284         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1285         av_log(NULL, AV_LOG_INFO, "\n");
1286         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1287                video_size / 1024.0,
1288                audio_size / 1024.0,
1289                subtitle_size / 1024.0,
1290                extra_size / 1024.0,
1291                100.0 * (total_size - raw) / raw
1292         );
1293         if(video_size + audio_size + subtitle_size + extra_size == 0){
1294             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1295         }
1296     }
1297 }
1298
1299 static void flush_encoders(void)
1300 {
1301     int i, ret;
1302
1303     for (i = 0; i < nb_output_streams; i++) {
1304         OutputStream   *ost = output_streams[i];
1305         AVCodecContext *enc = ost->st->codec;
1306         AVFormatContext *os = output_files[ost->file_index]->ctx;
1307         int stop_encoding = 0;
1308
1309         if (!ost->encoding_needed)
1310             continue;
1311
1312         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1313             continue;
1314         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1315             continue;
1316
1317         for (;;) {
1318             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1319             const char *desc;
1320             int64_t *size;
1321
1322             switch (ost->st->codec->codec_type) {
1323             case AVMEDIA_TYPE_AUDIO:
1324                 encode = avcodec_encode_audio2;
1325                 desc   = "Audio";
1326                 size   = &audio_size;
1327                 break;
1328             case AVMEDIA_TYPE_VIDEO:
1329                 encode = avcodec_encode_video2;
1330                 desc   = "Video";
1331                 size   = &video_size;
1332                 break;
1333             default:
1334                 stop_encoding = 1;
1335             }
1336
1337             if (encode) {
1338                 AVPacket pkt;
1339                 int got_packet;
1340                 av_init_packet(&pkt);
1341                 pkt.data = NULL;
1342                 pkt.size = 0;
1343
1344                 update_benchmark(NULL);
1345                 ret = encode(enc, &pkt, NULL, &got_packet);
1346                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1347                 if (ret < 0) {
1348                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1349                     exit(1);
1350                 }
1351                 *size += pkt.size;
1352                 if (ost->logfile && enc->stats_out) {
1353                     fprintf(ost->logfile, "%s", enc->stats_out);
1354                 }
1355                 if (!got_packet) {
1356                     stop_encoding = 1;
1357                     break;
1358                 }
1359                 if (pkt.pts != AV_NOPTS_VALUE)
1360                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1361                 if (pkt.dts != AV_NOPTS_VALUE)
1362                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1363                 if (pkt.duration > 0)
1364                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1365                 write_frame(os, &pkt, ost);
1366                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1367                     do_video_stats(ost, pkt.size);
1368                 }
1369             }
1370
1371             if (stop_encoding)
1372                 break;
1373         }
1374     }
1375 }
1376
1377 /*
1378  * Check whether a packet from ist should be written into ost at this time
1379  */
1380 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1381 {
1382     OutputFile *of = output_files[ost->file_index];
1383     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1384
1385     if (ost->source_index != ist_index)
1386         return 0;
1387
1388     if (of->start_time && ist->pts < of->start_time)
1389         return 0;
1390
1391     return 1;
1392 }
1393
1394 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1395 {
1396     OutputFile *of = output_files[ost->file_index];
1397     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1398     AVPicture pict;
1399     AVPacket opkt;
1400
1401     av_init_packet(&opkt);
1402
1403     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1404         !ost->copy_initial_nonkeyframes)
1405         return;
1406
1407     if (!ost->frame_number && ist->pts < of->start_time &&
1408         !ost->copy_prior_start)
1409         return;
1410
1411     if (of->recording_time != INT64_MAX &&
1412         ist->pts >= of->recording_time + of->start_time) {
1413         close_output_stream(ost);
1414         return;
1415     }
1416
1417     /* force the input stream PTS */
1418     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1419         audio_size += pkt->size;
1420     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1421         video_size += pkt->size;
1422         ost->sync_opts++;
1423     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1424         subtitle_size += pkt->size;
1425     }
1426
1427     if (pkt->pts != AV_NOPTS_VALUE)
1428         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1429     else
1430         opkt.pts = AV_NOPTS_VALUE;
1431
1432     if (pkt->dts == AV_NOPTS_VALUE)
1433         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1434     else
1435         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1436     opkt.dts -= ost_tb_start_time;
1437
1438     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1439         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1440         if(!duration)
1441             duration = ist->st->codec->frame_size;
1442         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1443                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1444                                                ost->st->time_base) - ost_tb_start_time;
1445     }
1446
1447     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1448     opkt.flags    = pkt->flags;
1449
1450     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1451     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1452        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1453        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1454        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1455        ) {
1456         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1457             opkt.destruct = av_destruct_packet;
1458     } else {
1459         opkt.data = pkt->data;
1460         opkt.size = pkt->size;
1461     }
1462
1463     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1464         /* store AVPicture in AVPacket, as expected by the output format */
1465         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1466         opkt.data = (uint8_t *)&pict;
1467         opkt.size = sizeof(AVPicture);
1468         opkt.flags |= AV_PKT_FLAG_KEY;
1469     }
1470
1471     write_frame(of->ctx, &opkt, ost);
1472     ost->st->codec->frame_number++;
1473 }
1474
1475 static void rate_emu_sleep(InputStream *ist)
1476 {
1477     if (input_files[ist->file_index]->rate_emu) {
1478         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1479         int64_t now = av_gettime() - ist->start;
1480         if (pts > now)
1481             av_usleep(pts - now);
1482     }
1483 }
1484
1485 int guess_input_channel_layout(InputStream *ist)
1486 {
1487     AVCodecContext *dec = ist->st->codec;
1488
1489     if (!dec->channel_layout) {
1490         char layout_name[256];
1491
1492         if (dec->channels > ist->guess_layout_max)
1493             return 0;
1494         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1495         if (!dec->channel_layout)
1496             return 0;
1497         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1498                                      dec->channels, dec->channel_layout);
1499         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1500                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1501     }
1502     return 1;
1503 }
1504
1505 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1506 {
1507     AVFrame *decoded_frame;
1508     AVCodecContext *avctx = ist->st->codec;
1509     int i, ret, resample_changed;
1510     AVRational decoded_frame_tb;
1511
1512     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1513         return AVERROR(ENOMEM);
1514     decoded_frame = ist->decoded_frame;
1515
1516     update_benchmark(NULL);
1517     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1518     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1519
1520     if (ret >= 0 && avctx->sample_rate <= 0) {
1521         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1522         ret = AVERROR_INVALIDDATA;
1523     }
1524
1525     if (!*got_output || ret < 0) {
1526         if (!pkt->size) {
1527             for (i = 0; i < ist->nb_filters; i++)
1528                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1529         }
1530         return ret;
1531     }
1532
1533 #if 1
1534     /* increment next_dts to use for the case where the input stream does not
1535        have timestamps or there are multiple frames in the packet */
1536     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1537                      avctx->sample_rate;
1538     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1539                      avctx->sample_rate;
1540 #endif
1541
1542     rate_emu_sleep(ist);
1543
1544     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1545                        ist->resample_channels       != avctx->channels               ||
1546                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1547                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1548     if (resample_changed) {
1549         char layout1[64], layout2[64];
1550
1551         if (!guess_input_channel_layout(ist)) {
1552             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1553                    "layout for Input Stream #%d.%d\n", ist->file_index,
1554                    ist->st->index);
1555             exit(1);
1556         }
1557         decoded_frame->channel_layout = avctx->channel_layout;
1558
1559         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1560                                      ist->resample_channel_layout);
1561         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1562                                      decoded_frame->channel_layout);
1563
1564         av_log(NULL, AV_LOG_INFO,
1565                "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",
1566                ist->file_index, ist->st->index,
1567                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1568                ist->resample_channels, layout1,
1569                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1570                avctx->channels, layout2);
1571
1572         ist->resample_sample_fmt     = decoded_frame->format;
1573         ist->resample_sample_rate    = decoded_frame->sample_rate;
1574         ist->resample_channel_layout = decoded_frame->channel_layout;
1575         ist->resample_channels       = avctx->channels;
1576
1577         for (i = 0; i < nb_filtergraphs; i++)
1578             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1579                 FilterGraph *fg = filtergraphs[i];
1580                 int j;
1581                 if (configure_filtergraph(fg) < 0) {
1582                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1583                     exit(1);
1584                 }
1585                 for (j = 0; j < fg->nb_outputs; j++) {
1586                     OutputStream *ost = fg->outputs[j]->ost;
1587                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1588                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1589                         av_buffersink_set_frame_size(ost->filter->filter,
1590                                                      ost->st->codec->frame_size);
1591                 }
1592             }
1593     }
1594
1595     /* if the decoder provides a pts, use it instead of the last packet pts.
1596        the decoder could be delaying output by a packet or more. */
1597     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1598         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1599         decoded_frame_tb   = avctx->time_base;
1600     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1601         decoded_frame->pts = decoded_frame->pkt_pts;
1602         pkt->pts           = AV_NOPTS_VALUE;
1603         decoded_frame_tb   = ist->st->time_base;
1604     } else if (pkt->pts != AV_NOPTS_VALUE) {
1605         decoded_frame->pts = pkt->pts;
1606         pkt->pts           = AV_NOPTS_VALUE;
1607         decoded_frame_tb   = ist->st->time_base;
1608     }else {
1609         decoded_frame->pts = ist->dts;
1610         decoded_frame_tb   = AV_TIME_BASE_Q;
1611     }
1612     if (decoded_frame->pts != AV_NOPTS_VALUE)
1613         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1614                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1615                                               (AVRational){1, ist->st->codec->sample_rate});
1616     for (i = 0; i < ist->nb_filters; i++)
1617         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1618                                AV_BUFFERSRC_FLAG_PUSH);
1619
1620     decoded_frame->pts = AV_NOPTS_VALUE;
1621
1622     return ret;
1623 }
1624
1625 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1626 {
1627     AVFrame *decoded_frame;
1628     void *buffer_to_free = NULL;
1629     int i, ret = 0, resample_changed;
1630     int64_t best_effort_timestamp;
1631     AVRational *frame_sample_aspect;
1632
1633     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1634         return AVERROR(ENOMEM);
1635     decoded_frame = ist->decoded_frame;
1636     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1637
1638     update_benchmark(NULL);
1639     ret = avcodec_decode_video2(ist->st->codec,
1640                                 decoded_frame, got_output, pkt);
1641     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1642     if (!*got_output || ret < 0) {
1643         if (!pkt->size) {
1644             for (i = 0; i < ist->nb_filters; i++)
1645                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1646         }
1647         return ret;
1648     }
1649
1650     if(ist->top_field_first>=0)
1651         decoded_frame->top_field_first = ist->top_field_first;
1652
1653     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1654     if(best_effort_timestamp != AV_NOPTS_VALUE)
1655         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1656
1657     if (debug_ts) {
1658         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1659                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1660                 ist->st->index, av_ts2str(decoded_frame->pts),
1661                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1662                 best_effort_timestamp,
1663                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1664                 decoded_frame->key_frame, decoded_frame->pict_type);
1665     }
1666
1667     pkt->size = 0;
1668     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1669
1670     rate_emu_sleep(ist);
1671
1672     if (ist->st->sample_aspect_ratio.num)
1673         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1674
1675     resample_changed = ist->resample_width   != decoded_frame->width  ||
1676                        ist->resample_height  != decoded_frame->height ||
1677                        ist->resample_pix_fmt != decoded_frame->format;
1678     if (resample_changed) {
1679         av_log(NULL, AV_LOG_INFO,
1680                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1681                ist->file_index, ist->st->index,
1682                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1683                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1684
1685         ist->resample_width   = decoded_frame->width;
1686         ist->resample_height  = decoded_frame->height;
1687         ist->resample_pix_fmt = decoded_frame->format;
1688
1689         for (i = 0; i < nb_filtergraphs; i++) {
1690             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1691                 configure_filtergraph(filtergraphs[i]) < 0) {
1692                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1693                 exit(1);
1694             }
1695         }
1696     }
1697
1698     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1699     for (i = 0; i < ist->nb_filters; i++) {
1700         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1701                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1702                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1703
1704         if (!frame_sample_aspect->num)
1705             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1706         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1707             FrameBuffer      *buf = decoded_frame->opaque;
1708             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1709                                         decoded_frame->data, decoded_frame->linesize,
1710                                         AV_PERM_READ | AV_PERM_PRESERVE,
1711                                         ist->st->codec->width, ist->st->codec->height,
1712                                         ist->st->codec->pix_fmt);
1713
1714             avfilter_copy_frame_props(fb, decoded_frame);
1715             fb->buf->priv           = buf;
1716             fb->buf->free           = filter_release_buffer;
1717
1718             av_assert0(buf->refcount>0);
1719             buf->refcount++;
1720             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1721                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1722                                  AV_BUFFERSRC_FLAG_NO_COPY |
1723                                  AV_BUFFERSRC_FLAG_PUSH);
1724         } else
1725         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1726             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1727             exit(1);
1728         }
1729
1730     }
1731
1732     av_free(buffer_to_free);
1733     return ret;
1734 }
1735
1736 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1737 {
1738     AVSubtitle subtitle;
1739     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1740                                           &subtitle, got_output, pkt);
1741     if (ret < 0 || !*got_output) {
1742         if (!pkt->size)
1743             sub2video_flush(ist);
1744         return ret;
1745     }
1746
1747     if (ist->fix_sub_duration) {
1748         if (ist->prev_sub.got_output) {
1749             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1750                                  1000, AV_TIME_BASE);
1751             if (end < ist->prev_sub.subtitle.end_display_time) {
1752                 av_log(ist->st->codec, AV_LOG_DEBUG,
1753                        "Subtitle duration reduced from %d to %d\n",
1754                        ist->prev_sub.subtitle.end_display_time, end);
1755                 ist->prev_sub.subtitle.end_display_time = end;
1756             }
1757         }
1758         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1759         FFSWAP(int,        ret,         ist->prev_sub.ret);
1760         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1761     }
1762
1763     sub2video_update(ist, &subtitle);
1764
1765     if (!*got_output || !subtitle.num_rects)
1766         return ret;
1767
1768     rate_emu_sleep(ist);
1769
1770     for (i = 0; i < nb_output_streams; i++) {
1771         OutputStream *ost = output_streams[i];
1772
1773         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1774             continue;
1775
1776         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1777     }
1778
1779     avsubtitle_free(&subtitle);
1780     return ret;
1781 }
1782
1783 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1784 static int output_packet(InputStream *ist, const AVPacket *pkt)
1785 {
1786     int ret = 0, i;
1787     int got_output;
1788
1789     AVPacket avpkt;
1790     if (!ist->saw_first_ts) {
1791         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;
1792         ist->pts = 0;
1793         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1794             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1795             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1796         }
1797         ist->saw_first_ts = 1;
1798     }
1799
1800     if (ist->next_dts == AV_NOPTS_VALUE)
1801         ist->next_dts = ist->dts;
1802     if (ist->next_pts == AV_NOPTS_VALUE)
1803         ist->next_pts = ist->pts;
1804
1805     if (pkt == NULL) {
1806         /* EOF handling */
1807         av_init_packet(&avpkt);
1808         avpkt.data = NULL;
1809         avpkt.size = 0;
1810         goto handle_eof;
1811     } else {
1812         avpkt = *pkt;
1813     }
1814
1815     if (pkt->dts != AV_NOPTS_VALUE) {
1816         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1817         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1818             ist->next_pts = ist->pts = ist->dts;
1819     }
1820
1821     // while we have more to decode or while the decoder did output something on EOF
1822     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1823         int duration;
1824     handle_eof:
1825
1826         ist->pts = ist->next_pts;
1827         ist->dts = ist->next_dts;
1828
1829         if (avpkt.size && avpkt.size != pkt->size) {
1830             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1831                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1832             ist->showed_multi_packet_warning = 1;
1833         }
1834
1835         switch (ist->st->codec->codec_type) {
1836         case AVMEDIA_TYPE_AUDIO:
1837             ret = decode_audio    (ist, &avpkt, &got_output);
1838             break;
1839         case AVMEDIA_TYPE_VIDEO:
1840             ret = decode_video    (ist, &avpkt, &got_output);
1841             if (avpkt.duration) {
1842                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1843             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1844                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1845                 duration = ((int64_t)AV_TIME_BASE *
1846                                 ist->st->codec->time_base.num * ticks) /
1847                                 ist->st->codec->time_base.den;
1848             } else
1849                 duration = 0;
1850
1851             if(ist->dts != AV_NOPTS_VALUE && duration) {
1852                 ist->next_dts += duration;
1853             }else
1854                 ist->next_dts = AV_NOPTS_VALUE;
1855
1856             if (got_output)
1857                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1858             break;
1859         case AVMEDIA_TYPE_SUBTITLE:
1860             ret = transcode_subtitles(ist, &avpkt, &got_output);
1861             break;
1862         default:
1863             return -1;
1864         }
1865
1866         if (ret < 0)
1867             return ret;
1868
1869         avpkt.dts=
1870         avpkt.pts= AV_NOPTS_VALUE;
1871
1872         // touch data and size only if not EOF
1873         if (pkt) {
1874             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1875                 ret = avpkt.size;
1876             avpkt.data += ret;
1877             avpkt.size -= ret;
1878         }
1879         if (!got_output) {
1880             continue;
1881         }
1882     }
1883
1884     /* handle stream copy */
1885     if (!ist->decoding_needed) {
1886         rate_emu_sleep(ist);
1887         ist->dts = ist->next_dts;
1888         switch (ist->st->codec->codec_type) {
1889         case AVMEDIA_TYPE_AUDIO:
1890             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1891                              ist->st->codec->sample_rate;
1892             break;
1893         case AVMEDIA_TYPE_VIDEO:
1894             if (pkt->duration) {
1895                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1896             } else if(ist->st->codec->time_base.num != 0) {
1897                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1898                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1899                                   ist->st->codec->time_base.num * ticks) /
1900                                   ist->st->codec->time_base.den;
1901             }
1902             break;
1903         }
1904         ist->pts = ist->dts;
1905         ist->next_pts = ist->next_dts;
1906     }
1907     for (i = 0; pkt && i < nb_output_streams; i++) {
1908         OutputStream *ost = output_streams[i];
1909
1910         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1911             continue;
1912
1913         do_streamcopy(ist, ost, pkt);
1914     }
1915
1916     return 0;
1917 }
1918
1919 static void print_sdp(void)
1920 {
1921     char sdp[16384];
1922     int i;
1923     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1924
1925     if (!avc)
1926         exit(1);
1927     for (i = 0; i < nb_output_files; i++)
1928         avc[i] = output_files[i]->ctx;
1929
1930     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1931     printf("SDP:\n%s\n", sdp);
1932     fflush(stdout);
1933     av_freep(&avc);
1934 }
1935
1936 static int init_input_stream(int ist_index, char *error, int error_len)
1937 {
1938     int ret;
1939     InputStream *ist = input_streams[ist_index];
1940
1941     if (ist->decoding_needed) {
1942         AVCodec *codec = ist->dec;
1943         if (!codec) {
1944             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1945                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1946             return AVERROR(EINVAL);
1947         }
1948
1949         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1950         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1951             ist->st->codec->get_buffer     = codec_get_buffer;
1952             ist->st->codec->release_buffer = codec_release_buffer;
1953             ist->st->codec->opaque         = &ist->buffer_pool;
1954         }
1955
1956         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1957             av_dict_set(&ist->opts, "threads", "auto", 0);
1958         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1959             if (ret == AVERROR_EXPERIMENTAL)
1960                 abort_codec_experimental(codec, 0);
1961             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1962                     ist->file_index, ist->st->index);
1963             return ret;
1964         }
1965         assert_avoptions(ist->opts);
1966     }
1967
1968     ist->next_pts = AV_NOPTS_VALUE;
1969     ist->next_dts = AV_NOPTS_VALUE;
1970     ist->is_start = 1;
1971
1972     return 0;
1973 }
1974
1975 static InputStream *get_input_stream(OutputStream *ost)
1976 {
1977     if (ost->source_index >= 0)
1978         return input_streams[ost->source_index];
1979     return NULL;
1980 }
1981
1982 static int compare_int64(const void *a, const void *b)
1983 {
1984     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
1985     return va < vb ? -1 : va > vb ? +1 : 0;
1986 }
1987
1988 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1989                                     AVCodecContext *avctx)
1990 {
1991     char *p;
1992     int n = 1, i, size, index = 0;
1993     int64_t t, *pts;
1994
1995     for (p = kf; *p; p++)
1996         if (*p == ',')
1997             n++;
1998     size = n;
1999     pts = av_malloc(sizeof(*pts) * size);
2000     if (!pts) {
2001         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2002         exit(1);
2003     }
2004
2005     p = kf;
2006     for (i = 0; i < n; i++) {
2007         char *next = strchr(p, ',');
2008
2009         if (next)
2010             *next++ = 0;
2011
2012         if (!memcmp(p, "chapters", 8)) {
2013
2014             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2015             int j;
2016
2017             if (avf->nb_chapters > INT_MAX - size ||
2018                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2019                                      sizeof(*pts)))) {
2020                 av_log(NULL, AV_LOG_FATAL,
2021                        "Could not allocate forced key frames array.\n");
2022                 exit(1);
2023             }
2024             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2025             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2026
2027             for (j = 0; j < avf->nb_chapters; j++) {
2028                 AVChapter *c = avf->chapters[j];
2029                 av_assert1(index < size);
2030                 pts[index++] = av_rescale_q(c->start, c->time_base,
2031                                             avctx->time_base) + t;
2032             }
2033
2034         } else {
2035
2036             t = parse_time_or_die("force_key_frames", p, 1);
2037             av_assert1(index < size);
2038             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2039
2040         }
2041
2042         p = next;
2043     }
2044
2045     av_assert0(index == size);
2046     qsort(pts, size, sizeof(*pts), compare_int64);
2047     ost->forced_kf_count = size;
2048     ost->forced_kf_pts   = pts;
2049 }
2050
2051 static void report_new_stream(int input_index, AVPacket *pkt)
2052 {
2053     InputFile *file = input_files[input_index];
2054     AVStream *st = file->ctx->streams[pkt->stream_index];
2055
2056     if (pkt->stream_index < file->nb_streams_warn)
2057         return;
2058     av_log(file->ctx, AV_LOG_WARNING,
2059            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2060            av_get_media_type_string(st->codec->codec_type),
2061            input_index, pkt->stream_index,
2062            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2063     file->nb_streams_warn = pkt->stream_index + 1;
2064 }
2065
2066 static int transcode_init(void)
2067 {
2068     int ret = 0, i, j, k;
2069     AVFormatContext *oc;
2070     AVCodecContext *codec;
2071     OutputStream *ost;
2072     InputStream *ist;
2073     char error[1024];
2074     int want_sdp = 1;
2075
2076     /* init framerate emulation */
2077     for (i = 0; i < nb_input_files; i++) {
2078         InputFile *ifile = input_files[i];
2079         if (ifile->rate_emu)
2080             for (j = 0; j < ifile->nb_streams; j++)
2081                 input_streams[j + ifile->ist_index]->start = av_gettime();
2082     }
2083
2084     /* output stream init */
2085     for (i = 0; i < nb_output_files; i++) {
2086         oc = output_files[i]->ctx;
2087         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2088             av_dump_format(oc, i, oc->filename, 1);
2089             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2090             return AVERROR(EINVAL);
2091         }
2092     }
2093
2094     /* init complex filtergraphs */
2095     for (i = 0; i < nb_filtergraphs; i++)
2096         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2097             return ret;
2098
2099     /* for each output stream, we compute the right encoding parameters */
2100     for (i = 0; i < nb_output_streams; i++) {
2101         AVCodecContext *icodec = NULL;
2102         ost = output_streams[i];
2103         oc  = output_files[ost->file_index]->ctx;
2104         ist = get_input_stream(ost);
2105
2106         if (ost->attachment_filename)
2107             continue;
2108
2109         codec  = ost->st->codec;
2110
2111         if (ist) {
2112             icodec = ist->st->codec;
2113
2114             ost->st->disposition          = ist->st->disposition;
2115             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2116             codec->chroma_sample_location = icodec->chroma_sample_location;
2117         }
2118
2119         if (ost->stream_copy) {
2120             uint64_t extra_size;
2121
2122             av_assert0(ist && !ost->filter);
2123
2124             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2125
2126             if (extra_size > INT_MAX) {
2127                 return AVERROR(EINVAL);
2128             }
2129
2130             /* if stream_copy is selected, no need to decode or encode */
2131             codec->codec_id   = icodec->codec_id;
2132             codec->codec_type = icodec->codec_type;
2133
2134             if (!codec->codec_tag) {
2135                 unsigned int codec_tag;
2136                 if (!oc->oformat->codec_tag ||
2137                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2138                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2139                     codec->codec_tag = icodec->codec_tag;
2140             }
2141
2142             codec->bit_rate       = icodec->bit_rate;
2143             codec->rc_max_rate    = icodec->rc_max_rate;
2144             codec->rc_buffer_size = icodec->rc_buffer_size;
2145             codec->field_order    = icodec->field_order;
2146             codec->extradata      = av_mallocz(extra_size);
2147             if (!codec->extradata) {
2148                 return AVERROR(ENOMEM);
2149             }
2150             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2151             codec->extradata_size= icodec->extradata_size;
2152             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2153
2154             codec->time_base = ist->st->time_base;
2155             /*
2156              * Avi is a special case here because it supports variable fps but
2157              * having the fps and timebase differe significantly adds quite some
2158              * overhead
2159              */
2160             if(!strcmp(oc->oformat->name, "avi")) {
2161                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2162                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2163                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2164                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2165                      || copy_tb==2){
2166                     codec->time_base.num = ist->st->r_frame_rate.den;
2167                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2168                     codec->ticks_per_frame = 2;
2169                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2170                                  && av_q2d(ist->st->time_base) < 1.0/500
2171                     || copy_tb==0){
2172                     codec->time_base = icodec->time_base;
2173                     codec->time_base.num *= icodec->ticks_per_frame;
2174                     codec->time_base.den *= 2;
2175                     codec->ticks_per_frame = 2;
2176                 }
2177             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2178                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2179                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2180                       && strcmp(oc->oformat->name, "f4v")
2181             ) {
2182                 if(   copy_tb<0 && icodec->time_base.den
2183                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2184                                 && av_q2d(ist->st->time_base) < 1.0/500
2185                    || copy_tb==0){
2186                     codec->time_base = icodec->time_base;
2187                     codec->time_base.num *= icodec->ticks_per_frame;
2188                 }
2189             }
2190             if (   codec->codec_tag == AV_RL32("tmcd")
2191                 && icodec->time_base.num < icodec->time_base.den
2192                 && icodec->time_base.num > 0
2193                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2194                 codec->time_base = icodec->time_base;
2195             }
2196
2197             if(ost->frame_rate.num)
2198                 codec->time_base = av_inv_q(ost->frame_rate);
2199
2200             av_reduce(&codec->time_base.num, &codec->time_base.den,
2201                         codec->time_base.num, codec->time_base.den, INT_MAX);
2202
2203             switch (codec->codec_type) {
2204             case AVMEDIA_TYPE_AUDIO:
2205                 if (audio_volume != 256) {
2206                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2207                     exit(1);
2208                 }
2209                 codec->channel_layout     = icodec->channel_layout;
2210                 codec->sample_rate        = icodec->sample_rate;
2211                 codec->channels           = icodec->channels;
2212                 codec->frame_size         = icodec->frame_size;
2213                 codec->audio_service_type = icodec->audio_service_type;
2214                 codec->block_align        = icodec->block_align;
2215                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2216                     codec->block_align= 0;
2217                 if(codec->codec_id == AV_CODEC_ID_AC3)
2218                     codec->block_align= 0;
2219                 break;
2220             case AVMEDIA_TYPE_VIDEO:
2221                 codec->pix_fmt            = icodec->pix_fmt;
2222                 codec->width              = icodec->width;
2223                 codec->height             = icodec->height;
2224                 codec->has_b_frames       = icodec->has_b_frames;
2225                 if (!codec->sample_aspect_ratio.num) {
2226                     codec->sample_aspect_ratio   =
2227                     ost->st->sample_aspect_ratio =
2228                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2229                         ist->st->codec->sample_aspect_ratio.num ?
2230                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2231                 }
2232                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2233                 break;
2234             case AVMEDIA_TYPE_SUBTITLE:
2235                 codec->width  = icodec->width;
2236                 codec->height = icodec->height;
2237                 break;
2238             case AVMEDIA_TYPE_DATA:
2239             case AVMEDIA_TYPE_ATTACHMENT:
2240                 break;
2241             default:
2242                 abort();
2243             }
2244         } else {
2245             if (!ost->enc)
2246                 ost->enc = avcodec_find_encoder(codec->codec_id);
2247             if (!ost->enc) {
2248                 /* should only happen when a default codec is not present. */
2249                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2250                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2251                 ret = AVERROR(EINVAL);
2252                 goto dump_format;
2253             }
2254
2255             if (ist)
2256                 ist->decoding_needed++;
2257             ost->encoding_needed = 1;
2258
2259             if (!ost->filter &&
2260                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2261                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2262                     FilterGraph *fg;
2263                     fg = init_simple_filtergraph(ist, ost);
2264                     if (configure_filtergraph(fg)) {
2265                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2266                         exit(1);
2267                     }
2268             }
2269
2270             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2271                 if (ost->filter && !ost->frame_rate.num)
2272                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2273                 if (ist && !ost->frame_rate.num)
2274                     ost->frame_rate = ist->framerate;
2275                 if (ist && !ost->frame_rate.num)
2276                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2277 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2278                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2279                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2280                     ost->frame_rate = ost->enc->supported_framerates[idx];
2281                 }
2282             }
2283
2284             switch (codec->codec_type) {
2285             case AVMEDIA_TYPE_AUDIO:
2286                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2287                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2288                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2289                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2290                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2291                 break;
2292             case AVMEDIA_TYPE_VIDEO:
2293                 codec->time_base = av_inv_q(ost->frame_rate);
2294                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2295                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2296                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2297                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2298                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2299                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2300                 }
2301                 for (j = 0; j < ost->forced_kf_count; j++)
2302                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2303                                                          AV_TIME_BASE_Q,
2304                                                          codec->time_base);
2305
2306                 codec->width  = ost->filter->filter->inputs[0]->w;
2307                 codec->height = ost->filter->filter->inputs[0]->h;
2308                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2309                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2310                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2311                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2312                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2313
2314                 if (!icodec ||
2315                     codec->width   != icodec->width  ||
2316                     codec->height  != icodec->height ||
2317                     codec->pix_fmt != icodec->pix_fmt) {
2318                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2319                 }
2320
2321                 if (ost->forced_keyframes) {
2322                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2323                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2324                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2325                         if (ret < 0) {
2326                             av_log(NULL, AV_LOG_ERROR,
2327                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2328                             return ret;
2329                         }
2330                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2331                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2332                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2333                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2334                     } else {
2335                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2336                     }
2337                 }
2338                 break;
2339             case AVMEDIA_TYPE_SUBTITLE:
2340                 codec->time_base = (AVRational){1, 1000};
2341                 if (!codec->width) {
2342                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2343                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2344                 }
2345                 break;
2346             default:
2347                 abort();
2348                 break;
2349             }
2350             /* two pass mode */
2351             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2352                 char logfilename[1024];
2353                 FILE *f;
2354
2355                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2356                          ost->logfile_prefix ? ost->logfile_prefix :
2357                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2358                          i);
2359                 if (!strcmp(ost->enc->name, "libx264")) {
2360                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2361                 } else {
2362                     if (codec->flags & CODEC_FLAG_PASS2) {
2363                         char  *logbuffer;
2364                         size_t logbuffer_size;
2365                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2366                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2367                                    logfilename);
2368                             exit(1);
2369                         }
2370                         codec->stats_in = logbuffer;
2371                     }
2372                     if (codec->flags & CODEC_FLAG_PASS1) {
2373                         f = fopen(logfilename, "wb");
2374                         if (!f) {
2375                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2376                                 logfilename, strerror(errno));
2377                             exit(1);
2378                         }
2379                         ost->logfile = f;
2380                     }
2381                 }
2382             }
2383         }
2384     }
2385
2386     /* open each encoder */
2387     for (i = 0; i < nb_output_streams; i++) {
2388         ost = output_streams[i];
2389         if (ost->encoding_needed) {
2390             AVCodec      *codec = ost->enc;
2391             AVCodecContext *dec = NULL;
2392
2393             if ((ist = get_input_stream(ost)))
2394                 dec = ist->st->codec;
2395             if (dec && dec->subtitle_header) {
2396                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2397                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2398                 if (!ost->st->codec->subtitle_header) {
2399                     ret = AVERROR(ENOMEM);
2400                     goto dump_format;
2401                 }
2402                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2403                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2404             }
2405             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2406                 av_dict_set(&ost->opts, "threads", "auto", 0);
2407             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2408                 if (ret == AVERROR_EXPERIMENTAL)
2409                     abort_codec_experimental(codec, 1);
2410                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2411                         ost->file_index, ost->index);
2412                 goto dump_format;
2413             }
2414             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2415                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2416                 av_buffersink_set_frame_size(ost->filter->filter,
2417                                              ost->st->codec->frame_size);
2418             assert_avoptions(ost->opts);
2419             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2420                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2421                                              " It takes bits/s as argument, not kbits/s\n");
2422             extra_size += ost->st->codec->extradata_size;
2423
2424             if (ost->st->codec->me_threshold)
2425                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2426         }
2427     }
2428
2429     /* init input streams */
2430     for (i = 0; i < nb_input_streams; i++)
2431         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2432             goto dump_format;
2433
2434     /* discard unused programs */
2435     for (i = 0; i < nb_input_files; i++) {
2436         InputFile *ifile = input_files[i];
2437         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2438             AVProgram *p = ifile->ctx->programs[j];
2439             int discard  = AVDISCARD_ALL;
2440
2441             for (k = 0; k < p->nb_stream_indexes; k++)
2442                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2443                     discard = AVDISCARD_DEFAULT;
2444                     break;
2445                 }
2446             p->discard = discard;
2447         }
2448     }
2449
2450     /* open files and write file headers */
2451     for (i = 0; i < nb_output_files; i++) {
2452         oc = output_files[i]->ctx;
2453         oc->interrupt_callback = int_cb;
2454         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2455             char errbuf[128];
2456             const char *errbuf_ptr = errbuf;
2457             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2458                 errbuf_ptr = strerror(AVUNERROR(ret));
2459             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2460             ret = AVERROR(EINVAL);
2461             goto dump_format;
2462         }
2463 //         assert_avoptions(output_files[i]->opts);
2464         if (strcmp(oc->oformat->name, "rtp")) {
2465             want_sdp = 0;
2466         }
2467     }
2468
2469  dump_format:
2470     /* dump the file output parameters - cannot be done before in case
2471        of stream copy */
2472     for (i = 0; i < nb_output_files; i++) {
2473         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2474     }
2475
2476     /* dump the stream mapping */
2477     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2478     for (i = 0; i < nb_input_streams; i++) {
2479         ist = input_streams[i];
2480
2481         for (j = 0; j < ist->nb_filters; j++) {
2482             if (ist->filters[j]->graph->graph_desc) {
2483                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2484                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2485                        ist->filters[j]->name);
2486                 if (nb_filtergraphs > 1)
2487                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2488                 av_log(NULL, AV_LOG_INFO, "\n");
2489             }
2490         }
2491     }
2492
2493     for (i = 0; i < nb_output_streams; i++) {
2494         ost = output_streams[i];
2495
2496         if (ost->attachment_filename) {
2497             /* an attached file */
2498             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2499                    ost->attachment_filename, ost->file_index, ost->index);
2500             continue;
2501         }
2502
2503         if (ost->filter && ost->filter->graph->graph_desc) {
2504             /* output from a complex graph */
2505             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2506             if (nb_filtergraphs > 1)
2507                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2508
2509             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2510                    ost->index, ost->enc ? ost->enc->name : "?");
2511             continue;
2512         }
2513
2514         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2515                input_streams[ost->source_index]->file_index,
2516                input_streams[ost->source_index]->st->index,
2517                ost->file_index,
2518                ost->index);
2519         if (ost->sync_ist != input_streams[ost->source_index])
2520             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2521                    ost->sync_ist->file_index,
2522                    ost->sync_ist->st->index);
2523         if (ost->stream_copy)
2524             av_log(NULL, AV_LOG_INFO, " (copy)");
2525         else
2526             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2527                    input_streams[ost->source_index]->dec->name : "?",
2528                    ost->enc ? ost->enc->name : "?");
2529         av_log(NULL, AV_LOG_INFO, "\n");
2530     }
2531
2532     if (ret) {
2533         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2534         return ret;
2535     }
2536
2537     if (want_sdp) {
2538         print_sdp();
2539     }
2540
2541     return 0;
2542 }
2543
2544 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2545 static int need_output(void)
2546 {
2547     int i;
2548
2549     for (i = 0; i < nb_output_streams; i++) {
2550         OutputStream *ost    = output_streams[i];
2551         OutputFile *of       = output_files[ost->file_index];
2552         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2553
2554         if (ost->finished ||
2555             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2556             continue;
2557         if (ost->frame_number >= ost->max_frames) {
2558             int j;
2559             for (j = 0; j < of->ctx->nb_streams; j++)
2560                 close_output_stream(output_streams[of->ost_index + j]);
2561             continue;
2562         }
2563
2564         return 1;
2565     }
2566
2567     return 0;
2568 }
2569
2570 /**
2571  * Select the output stream to process.
2572  *
2573  * @return  selected output stream, or NULL if none available
2574  */
2575 static OutputStream *choose_output(void)
2576 {
2577     int i;
2578     int64_t opts_min = INT64_MAX;
2579     OutputStream *ost_min = NULL;
2580
2581     for (i = 0; i < nb_output_streams; i++) {
2582         OutputStream *ost = output_streams[i];
2583         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2584                                     AV_TIME_BASE_Q);
2585         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2586             opts_min = opts;
2587             ost_min  = ost;
2588         }
2589     }
2590     return ost_min;
2591 }
2592
2593 static int check_keyboard_interaction(int64_t cur_time)
2594 {
2595     int i, ret, key;
2596     static int64_t last_time;
2597     if (received_nb_signals)
2598         return AVERROR_EXIT;
2599     /* read_key() returns 0 on EOF */
2600     if(cur_time - last_time >= 100000 && !run_as_daemon){
2601         key =  read_key();
2602         last_time = cur_time;
2603     }else
2604         key = -1;
2605     if (key == 'q')
2606         return AVERROR_EXIT;
2607     if (key == '+') av_log_set_level(av_log_get_level()+10);
2608     if (key == '-') av_log_set_level(av_log_get_level()-10);
2609     if (key == 's') qp_hist     ^= 1;
2610     if (key == 'h'){
2611         if (do_hex_dump){
2612             do_hex_dump = do_pkt_dump = 0;
2613         } else if(do_pkt_dump){
2614             do_hex_dump = 1;
2615         } else
2616             do_pkt_dump = 1;
2617         av_log_set_level(AV_LOG_DEBUG);
2618     }
2619     if (key == 'c' || key == 'C'){
2620         char buf[4096], target[64], command[256], arg[256] = {0};
2621         double time;
2622         int k, n = 0;
2623         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2624         i = 0;
2625         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2626             if (k > 0)
2627                 buf[i++] = k;
2628         buf[i] = 0;
2629         if (k > 0 &&
2630             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2631             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2632                    target, time, command, arg);
2633             for (i = 0; i < nb_filtergraphs; i++) {
2634                 FilterGraph *fg = filtergraphs[i];
2635                 if (fg->graph) {
2636                     if (time < 0) {
2637                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2638                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2639                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2640                     } else {
2641                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2642                     }
2643                 }
2644             }
2645         } else {
2646             av_log(NULL, AV_LOG_ERROR,
2647                    "Parse error, at least 3 arguments were expected, "
2648                    "only %d given in string '%s'\n", n, buf);
2649         }
2650     }
2651     if (key == 'd' || key == 'D'){
2652         int debug=0;
2653         if(key == 'D') {
2654             debug = input_streams[0]->st->codec->debug<<1;
2655             if(!debug) debug = 1;
2656             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2657                 debug += debug;
2658         }else
2659             if(scanf("%d", &debug)!=1)
2660                 fprintf(stderr,"error parsing debug value\n");
2661         for(i=0;i<nb_input_streams;i++) {
2662             input_streams[i]->st->codec->debug = debug;
2663         }
2664         for(i=0;i<nb_output_streams;i++) {
2665             OutputStream *ost = output_streams[i];
2666             ost->st->codec->debug = debug;
2667         }
2668         if(debug) av_log_set_level(AV_LOG_DEBUG);
2669         fprintf(stderr,"debug=%d\n", debug);
2670     }
2671     if (key == '?'){
2672         fprintf(stderr, "key    function\n"
2673                         "?      show this help\n"
2674                         "+      increase verbosity\n"
2675                         "-      decrease verbosity\n"
2676                         "c      Send command to filtergraph\n"
2677                         "D      cycle through available debug modes\n"
2678                         "h      dump packets/hex press to cycle through the 3 states\n"
2679                         "q      quit\n"
2680                         "s      Show QP histogram\n"
2681         );
2682     }
2683     return 0;
2684 }
2685
2686 #if HAVE_PTHREADS
2687 static void *input_thread(void *arg)
2688 {
2689     InputFile *f = arg;
2690     int ret = 0;
2691
2692     while (!transcoding_finished && ret >= 0) {
2693         AVPacket pkt;
2694         ret = av_read_frame(f->ctx, &pkt);
2695
2696         if (ret == AVERROR(EAGAIN)) {
2697             av_usleep(10000);
2698             ret = 0;
2699             continue;
2700         } else if (ret < 0)
2701             break;
2702
2703         pthread_mutex_lock(&f->fifo_lock);
2704         while (!av_fifo_space(f->fifo))
2705             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2706
2707         av_dup_packet(&pkt);
2708         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2709
2710         pthread_mutex_unlock(&f->fifo_lock);
2711     }
2712
2713     f->finished = 1;
2714     return NULL;
2715 }
2716
2717 static void free_input_threads(void)
2718 {
2719     int i;
2720
2721     if (nb_input_files == 1)
2722         return;
2723
2724     transcoding_finished = 1;
2725
2726     for (i = 0; i < nb_input_files; i++) {
2727         InputFile *f = input_files[i];
2728         AVPacket pkt;
2729
2730         if (!f->fifo || f->joined)
2731             continue;
2732
2733         pthread_mutex_lock(&f->fifo_lock);
2734         while (av_fifo_size(f->fifo)) {
2735             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2736             av_free_packet(&pkt);
2737         }
2738         pthread_cond_signal(&f->fifo_cond);
2739         pthread_mutex_unlock(&f->fifo_lock);
2740
2741         pthread_join(f->thread, NULL);
2742         f->joined = 1;
2743
2744         while (av_fifo_size(f->fifo)) {
2745             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2746             av_free_packet(&pkt);
2747         }
2748         av_fifo_free(f->fifo);
2749     }
2750 }
2751
2752 static int init_input_threads(void)
2753 {
2754     int i, ret;
2755
2756     if (nb_input_files == 1)
2757         return 0;
2758
2759     for (i = 0; i < nb_input_files; i++) {
2760         InputFile *f = input_files[i];
2761
2762         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2763             return AVERROR(ENOMEM);
2764
2765         pthread_mutex_init(&f->fifo_lock, NULL);
2766         pthread_cond_init (&f->fifo_cond, NULL);
2767
2768         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2769             return AVERROR(ret);
2770     }
2771     return 0;
2772 }
2773
2774 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2775 {
2776     int ret = 0;
2777
2778     pthread_mutex_lock(&f->fifo_lock);
2779
2780     if (av_fifo_size(f->fifo)) {
2781         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2782         pthread_cond_signal(&f->fifo_cond);
2783     } else {
2784         if (f->finished)
2785             ret = AVERROR_EOF;
2786         else
2787             ret = AVERROR(EAGAIN);
2788     }
2789
2790     pthread_mutex_unlock(&f->fifo_lock);
2791
2792     return ret;
2793 }
2794 #endif
2795
2796 static int get_input_packet(InputFile *f, AVPacket *pkt)
2797 {
2798 #if HAVE_PTHREADS
2799     if (nb_input_files > 1)
2800         return get_input_packet_mt(f, pkt);
2801 #endif
2802     return av_read_frame(f->ctx, pkt);
2803 }
2804
2805 static int got_eagain(void)
2806 {
2807     int i;
2808     for (i = 0; i < nb_output_streams; i++)
2809         if (output_streams[i]->unavailable)
2810             return 1;
2811     return 0;
2812 }
2813
2814 static void reset_eagain(void)
2815 {
2816     int i;
2817     for (i = 0; i < nb_input_files; i++)
2818         input_files[i]->eagain = 0;
2819     for (i = 0; i < nb_output_streams; i++)
2820         output_streams[i]->unavailable = 0;
2821 }
2822
2823 /*
2824  * Return
2825  * - 0 -- one packet was read and processed
2826  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2827  *   this function should be called again
2828  * - AVERROR_EOF -- this function should not be called again
2829  */
2830 static int process_input(int file_index)
2831 {
2832     InputFile *ifile = input_files[file_index];
2833     AVFormatContext *is;
2834     InputStream *ist;
2835     AVPacket pkt;
2836     int ret, i, j;
2837
2838     is  = ifile->ctx;
2839     ret = get_input_packet(ifile, &pkt);
2840
2841     if (ret == AVERROR(EAGAIN)) {
2842         ifile->eagain = 1;
2843         return ret;
2844     }
2845     if (ret < 0) {
2846         if (ret != AVERROR_EOF) {
2847             print_error(is->filename, ret);
2848             if (exit_on_error)
2849                 exit(1);
2850         }
2851         ifile->eof_reached = 1;
2852
2853         for (i = 0; i < ifile->nb_streams; i++) {
2854             ist = input_streams[ifile->ist_index + i];
2855             if (ist->decoding_needed)
2856                 output_packet(ist, NULL);
2857
2858             /* mark all outputs that don't go through lavfi as finished */
2859             for (j = 0; j < nb_output_streams; j++) {
2860                 OutputStream *ost = output_streams[j];
2861
2862                 if (ost->source_index == ifile->ist_index + i &&
2863                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2864                     close_output_stream(ost);
2865             }
2866         }
2867
2868         return AVERROR(EAGAIN);
2869     }
2870
2871     reset_eagain();
2872
2873     if (do_pkt_dump) {
2874         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2875                          is->streams[pkt.stream_index]);
2876     }
2877     /* the following test is needed in case new streams appear
2878        dynamically in stream : we ignore them */
2879     if (pkt.stream_index >= ifile->nb_streams) {
2880         report_new_stream(file_index, &pkt);
2881         goto discard_packet;
2882     }
2883
2884     ist = input_streams[ifile->ist_index + pkt.stream_index];
2885     if (ist->discard)
2886         goto discard_packet;
2887
2888     if (debug_ts) {
2889         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2890                "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
2891                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2892                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2893                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2894                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2895                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2896                av_ts2str(input_files[ist->file_index]->ts_offset),
2897                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2898     }
2899
2900     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2901         int64_t stime, stime2;
2902         // Correcting starttime based on the enabled streams
2903         // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
2904         //       so we instead do it here as part of discontinuity handling
2905         if (   ist->next_dts == AV_NOPTS_VALUE
2906             && ifile->ts_offset == -is->start_time
2907             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2908             int64_t new_start_time = INT64_MAX;
2909             for (i=0; i<is->nb_streams; i++) {
2910                 AVStream *st = is->streams[i];
2911                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2912                     continue;
2913                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2914             }
2915             if (new_start_time > is->start_time) {
2916                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2917                 ifile->ts_offset = -new_start_time;
2918             }
2919         }
2920
2921         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2922         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2923         ist->wrap_correction_done = 1;
2924
2925         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2926             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2927             ist->wrap_correction_done = 0;
2928         }
2929         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2930             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2931             ist->wrap_correction_done = 0;
2932         }
2933     }
2934
2935     if (pkt.dts != AV_NOPTS_VALUE)
2936         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2937     if (pkt.pts != AV_NOPTS_VALUE)
2938         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2939
2940     if (pkt.pts != AV_NOPTS_VALUE)
2941         pkt.pts *= ist->ts_scale;
2942     if (pkt.dts != AV_NOPTS_VALUE)
2943         pkt.dts *= ist->ts_scale;
2944
2945     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2946         !copy_ts) {
2947         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2948         int64_t delta   = pkt_dts - ist->next_dts;
2949         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2950         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2951             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2952                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2953             pkt_dts+1<ist->pts){
2954             ifile->ts_offset -= delta;
2955             av_log(NULL, AV_LOG_DEBUG,
2956                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2957                    delta, ifile->ts_offset);
2958             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2959             if (pkt.pts != AV_NOPTS_VALUE)
2960                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2961         }
2962         } else {
2963             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2964                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2965                ) {
2966                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2967                 pkt.dts = AV_NOPTS_VALUE;
2968             }
2969             if (pkt.pts != AV_NOPTS_VALUE){
2970                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2971                 delta   = pkt_pts - ist->next_dts;
2972                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2973                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2974                    ) {
2975                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2976                     pkt.pts = AV_NOPTS_VALUE;
2977                 }
2978             }
2979         }
2980     }
2981
2982     if (debug_ts) {
2983         av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
2984                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2985                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2986                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2987                av_ts2str(input_files[ist->file_index]->ts_offset),
2988                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2989     }
2990
2991     sub2video_heartbeat(ist, pkt.pts);
2992
2993     ret = output_packet(ist, &pkt);
2994     if (ret < 0) {
2995         char buf[128];
2996         av_strerror(ret, buf, sizeof(buf));
2997         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2998                 ist->file_index, ist->st->index, buf);
2999         if (exit_on_error)
3000             exit(1);
3001     }
3002
3003 discard_packet:
3004     av_free_packet(&pkt);
3005
3006     return 0;
3007 }
3008
3009 /**
3010  * Perform a step of transcoding for the specified filter graph.
3011  *
3012  * @param[in]  graph     filter graph to consider
3013  * @param[out] best_ist  input stream where a frame would allow to continue
3014  * @return  0 for success, <0 for error
3015  */
3016 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3017 {
3018     int i, ret;
3019     int nb_requests, nb_requests_max = 0;
3020     InputFilter *ifilter;
3021     InputStream *ist;
3022
3023     *best_ist = NULL;
3024     ret = avfilter_graph_request_oldest(graph->graph);
3025     if (ret >= 0)
3026         return reap_filters();
3027
3028     if (ret == AVERROR_EOF) {
3029         ret = reap_filters();
3030         for (i = 0; i < graph->nb_outputs; i++)
3031             close_output_stream(graph->outputs[i]->ost);
3032         return ret;
3033     }
3034     if (ret != AVERROR(EAGAIN))
3035         return ret;
3036
3037     for (i = 0; i < graph->nb_inputs; i++) {
3038         ifilter = graph->inputs[i];
3039         ist = ifilter->ist;
3040         if (input_files[ist->file_index]->eagain ||
3041             input_files[ist->file_index]->eof_reached)
3042             continue;
3043         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3044         if (nb_requests > nb_requests_max) {
3045             nb_requests_max = nb_requests;
3046             *best_ist = ist;
3047         }
3048     }
3049
3050     if (!*best_ist)
3051         for (i = 0; i < graph->nb_outputs; i++)
3052             graph->outputs[i]->ost->unavailable = 1;
3053
3054     return 0;
3055 }
3056
3057 /**
3058  * Run a single step of transcoding.
3059  *
3060  * @return  0 for success, <0 for error
3061  */
3062 static int transcode_step(void)
3063 {
3064     OutputStream *ost;
3065     InputStream  *ist;
3066     int ret;
3067
3068     ost = choose_output();
3069     if (!ost) {
3070         if (got_eagain()) {
3071             reset_eagain();
3072             av_usleep(10000);
3073             return 0;
3074         }
3075         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3076         return AVERROR_EOF;
3077     }
3078
3079     if (ost->filter) {
3080         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3081             return ret;
3082         if (!ist)
3083             return 0;
3084     } else {
3085         av_assert0(ost->source_index >= 0);
3086         ist = input_streams[ost->source_index];
3087     }
3088
3089     ret = process_input(ist->file_index);
3090     if (ret == AVERROR(EAGAIN)) {
3091         if (input_files[ist->file_index]->eagain)
3092             ost->unavailable = 1;
3093         return 0;
3094     }
3095     if (ret < 0)
3096         return ret == AVERROR_EOF ? 0 : ret;
3097
3098     return reap_filters();
3099 }
3100
3101 /*
3102  * The following code is the main loop of the file converter
3103  */
3104 static int transcode(void)
3105 {
3106     int ret, i;
3107     AVFormatContext *os;
3108     OutputStream *ost;
3109     InputStream *ist;
3110     int64_t timer_start;
3111
3112     ret = transcode_init();
3113     if (ret < 0)
3114         goto fail;
3115
3116     if (stdin_interaction) {
3117         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3118     }
3119
3120     timer_start = av_gettime();
3121
3122 #if HAVE_PTHREADS
3123     if ((ret = init_input_threads()) < 0)
3124         goto fail;
3125 #endif
3126
3127     while (!received_sigterm) {
3128         int64_t cur_time= av_gettime();
3129
3130         /* if 'q' pressed, exits */
3131         if (stdin_interaction)
3132             if (check_keyboard_interaction(cur_time) < 0)
3133                 break;
3134
3135         /* check if there's any stream where output is still needed */
3136         if (!need_output()) {
3137             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3138             break;
3139         }
3140
3141         ret = transcode_step();
3142         if (ret < 0) {
3143             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3144                 continue;
3145
3146             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3147             break;
3148         }
3149
3150         /* dump report by using the output first video and audio streams */
3151         print_report(0, timer_start, cur_time);
3152     }
3153 #if HAVE_PTHREADS
3154     free_input_threads();
3155 #endif
3156
3157     /* at the end of stream, we must flush the decoder buffers */
3158     for (i = 0; i < nb_input_streams; i++) {
3159         ist = input_streams[i];
3160         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3161             output_packet(ist, NULL);
3162         }
3163     }
3164     flush_encoders();
3165
3166     term_exit();
3167
3168     /* write the trailer if needed and close file */
3169     for (i = 0; i < nb_output_files; i++) {
3170         os = output_files[i]->ctx;
3171         av_write_trailer(os);
3172     }
3173
3174     /* dump report by using the first video and audio streams */
3175     print_report(1, timer_start, av_gettime());
3176
3177     /* close each encoder */
3178     for (i = 0; i < nb_output_streams; i++) {
3179         ost = output_streams[i];
3180         if (ost->encoding_needed) {
3181             av_freep(&ost->st->codec->stats_in);
3182             avcodec_close(ost->st->codec);
3183         }
3184     }
3185
3186     /* close each decoder */
3187     for (i = 0; i < nb_input_streams; i++) {
3188         ist = input_streams[i];
3189         if (ist->decoding_needed) {
3190             avcodec_close(ist->st->codec);
3191         }
3192     }
3193
3194     /* finished ! */
3195     ret = 0;
3196
3197  fail:
3198 #if HAVE_PTHREADS
3199     free_input_threads();
3200 #endif
3201
3202     if (output_streams) {
3203         for (i = 0; i < nb_output_streams; i++) {
3204             ost = output_streams[i];
3205             if (ost) {
3206                 if (ost->stream_copy)
3207                     av_freep(&ost->st->codec->extradata);
3208                 if (ost->logfile) {
3209                     fclose(ost->logfile);
3210                     ost->logfile = NULL;
3211                 }
3212                 av_freep(&ost->st->codec->subtitle_header);
3213                 av_free(ost->forced_kf_pts);
3214                 av_dict_free(&ost->opts);
3215                 av_dict_free(&ost->resample_opts);
3216             }
3217         }
3218     }
3219     return ret;
3220 }
3221
3222
3223 static int64_t getutime(void)
3224 {
3225 #if HAVE_GETRUSAGE
3226     struct rusage rusage;
3227
3228     getrusage(RUSAGE_SELF, &rusage);
3229     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3230 #elif HAVE_GETPROCESSTIMES
3231     HANDLE proc;
3232     FILETIME c, e, k, u;
3233     proc = GetCurrentProcess();
3234     GetProcessTimes(proc, &c, &e, &k, &u);
3235     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3236 #else
3237     return av_gettime();
3238 #endif
3239 }
3240
3241 static int64_t getmaxrss(void)
3242 {
3243 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3244     struct rusage rusage;
3245     getrusage(RUSAGE_SELF, &rusage);
3246     return (int64_t)rusage.ru_maxrss * 1024;
3247 #elif HAVE_GETPROCESSMEMORYINFO
3248     HANDLE proc;
3249     PROCESS_MEMORY_COUNTERS memcounters;
3250     proc = GetCurrentProcess();
3251     memcounters.cb = sizeof(memcounters);
3252     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3253     return memcounters.PeakPagefileUsage;
3254 #else
3255     return 0;
3256 #endif
3257 }
3258
3259 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3260 {
3261 }
3262
3263 int main(int argc, char **argv)
3264 {
3265     int ret;
3266     int64_t ti;
3267
3268     atexit(exit_program);
3269
3270     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3271
3272     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3273     parse_loglevel(argc, argv, options);
3274
3275     if(argc>1 && !strcmp(argv[1], "-d")){
3276         run_as_daemon=1;
3277         av_log_set_callback(log_callback_null);
3278         argc--;
3279         argv++;
3280     }
3281
3282     avcodec_register_all();
3283 #if CONFIG_AVDEVICE
3284     avdevice_register_all();
3285 #endif
3286     avfilter_register_all();
3287     av_register_all();
3288     avformat_network_init();
3289
3290     show_banner(argc, argv, options);
3291
3292     term_init();
3293
3294     /* parse options and open all input/output files */
3295     ret = ffmpeg_parse_options(argc, argv);
3296     if (ret < 0)
3297         exit(1);
3298
3299     if (nb_output_files <= 0 && nb_input_files == 0) {
3300         show_usage();
3301         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3302         exit(1);
3303     }
3304
3305     /* file converter / grab */
3306     if (nb_output_files <= 0) {
3307         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3308         exit(1);
3309     }
3310
3311 //     if (nb_input_files == 0) {
3312 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3313 //         exit(1);
3314 //     }
3315
3316     current_time = ti = getutime();
3317     if (transcode() < 0)
3318         exit(1);
3319     ti = getutime() - ti;
3320     if (do_benchmark) {
3321         int maxrss = getmaxrss() / 1024;
3322         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3323     }
3324
3325     exit(received_nb_signals ? 255 : 0);
3326     return 0;
3327 }