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 #include <unistd.h>
  35 #endif
  36 #include "libavformat/avformat.h"
  37 #include "libavdevice/avdevice.h"
  38 #include "libswscale/swscale.h"
  39 #include "libswresample/swresample.h"
  40 #include "libavutil/opt.h"
  41 #include "libavutil/audioconvert.h"
  42 #include "libavutil/parseutils.h"
  43 #include "libavutil/samplefmt.h"
  44 #include "libavutil/colorspace.h"
  45 #include "libavutil/fifo.h"
  46 #include "libavutil/intreadwrite.h"
  47 #include "libavutil/dict.h"
  48 #include "libavutil/mathematics.h"
  49 #include "libavutil/pixdesc.h"
  50 #include "libavutil/avstring.h"
  51 #include "libavutil/libm.h"
  52 #include "libavutil/imgutils.h"
  53 #include "libavutil/timestamp.h"
  54 #include "libavutil/bprint.h"
  55 #include "libavutil/time.h"
  56 #include "libavformat/os_support.h"
  57
  58 #include "libavformat/ffm.h" // not public API
  59
  60 # include "libavfilter/avcodec.h"
  61 # include "libavfilter/avfilter.h"
  62 # include "libavfilter/avfiltergraph.h"
  63 # include "libavfilter/buffersrc.h"
  64 # include "libavfilter/buffersink.h"
  65
  66 #if HAVE_SYS_RESOURCE_H
  67 #include <sys/types.h>
  68 #include <sys/resource.h>
  69 #elif HAVE_GETPROCESSTIMES
  70 #include <windows.h>
  71 #endif
  72 #if HAVE_GETPROCESSMEMORYINFO
  73 #include <windows.h>
  74 #include <psapi.h>
  75 #endif
  76
  77 #if HAVE_SYS_SELECT_H
  78 #include <sys/select.h>
  79 #endif
  80
  81 #if HAVE_TERMIOS_H
  82 #include <fcntl.h>
  83 #include <sys/ioctl.h>
  84 #include <sys/time.h>
  85 #include <termios.h>
  86 #elif HAVE_KBHIT
  87 #include <conio.h>
  88 #endif
  89
  90 #if HAVE_PTHREADS
  91 #include <pthread.h>
  92 #endif
  93
  94 #include <time.h>
  95
  96 #include "ffmpeg.h"
  97 #include "cmdutils.h"
  98
  99 #include "libavutil/avassert.h"
 100
 101 const char program_name[] = "ffmpeg";
 102 const int program_birth_year = 2000;
 103
 104 static FILE *vstats_file;
 105
 106 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
 107 static int64_t getutime(void);
 108
 109 static int run_as_daemon  = 0;
 110 static int64_t video_size = 0;
 111 static int64_t audio_size = 0;
 112 static int64_t subtitle_size = 0;
 113 static int64_t extra_size = 0;
 114 static int nb_frames_dup = 0;
 115 static int nb_frames_drop = 0;
 116
 117 static int current_time;
 118 AVIOContext *progress_avio = NULL;
 119
 120 static uint8_t *subtitle_out;
 121
 122 #if HAVE_PTHREADS
 123 /* signal to input threads that they should exit; set by the main thread */
 124 static int transcoding_finished;
 125 #endif
 126
 127 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 128
 129 InputStream **input_streams = NULL;
 130 int        nb_input_streams = 0;
 131 InputFile   **input_files   = NULL;
 132 int        nb_input_files   = 0;
 133
 134 OutputStream **output_streams = NULL;
 135 int         nb_output_streams = 0;
 136 OutputFile   **output_files   = NULL;
 137 int         nb_output_files   = 0;
 138
 139 FilterGraph **filtergraphs;
 140 int        nb_filtergraphs;
 141
 142 #if HAVE_TERMIOS_H
 143
 144 /* init terminal so that we can grab keys */
 145 static struct termios oldtty;
 146 static int restore_tty;
 147 #endif
 148
 149
 150 /* sub2video hack:
 151    Convert subtitles to video with alpha to insert them in filter graphs.
 152    This is a temporary solution until libavfilter gets real subtitles support.
 153  */
 154
 155
 156
 157 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 158                                 AVSubtitleRect *r)
 159 {
 160     uint32_t *pal, *dst2;
 161     uint8_t *src, *src2;
 162     int x, y;
 163
 164     if (r->type != SUBTITLE_BITMAP) {
 165         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 166         return;
 167     }
 168     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 169         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 170         return;
 171     }
 172
 173     dst += r->y * dst_linesize + r->x * 4;
 174     src = r->pict.data[0];
 175     pal = (uint32_t *)r->pict.data[1];
 176     for (y = 0; y < r->h; y++) {
 177         dst2 = (uint32_t *)dst;
 178         src2 = src;
 179         for (x = 0; x < r->w; x++)
 180             *(dst2++) = pal[*(src2++)];
 181         dst += dst_linesize;
 182         src += r->pict.linesize[0];
 183     }
 184 }
 185
 186 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 187 {
 188     AVFilterBufferRef *ref = ist->sub2video.ref;
 189     int i;
 190
 191     ist->sub2video.last_pts = ref->pts = pts;
 192     for (i = 0; i < ist->nb_filters; i++)
 193         av_buffersrc_add_ref(ist->filters[i]->filter,
 194                              avfilter_ref_buffer(ref, ~0),
 195                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
 196                              AV_BUFFERSRC_FLAG_NO_COPY);
 197 }
 198
 199 static void sub2video_update(InputStream *ist, AVSubtitle *sub, int64_t pts)
 200 {
 201     int w = ist->sub2video.w, h = ist->sub2video.h;
 202     AVFilterBufferRef *ref = ist->sub2video.ref;
 203     int8_t *dst;
 204     int     dst_linesize;
 205     int i;
 206
 207     if (!ref)
 208         return;
 209     dst          = ref->data    [0];
 210     dst_linesize = ref->linesize[0];
 211     memset(dst, 0, h * dst_linesize);
 212     for (i = 0; i < sub->num_rects; i++)
 213         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 214     sub2video_push_ref(ist, pts);
 215 }
 216
 217 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 218 {
 219     InputFile *infile = input_files[ist->file_index];
 220     int i, j, nb_reqs;
 221     int64_t pts2;
 222
 223     /* When a frame is read from a file, examine all sub2video streams in
 224        the same file and send the sub2video frame again. Otherwise, decoded
 225        video frames could be accumulating in the filter graph while a filter
 226        (possibly overlay) is desperately waiting for a subtitle frame. */
 227     for (i = 0; i < infile->nb_streams; i++) {
 228         InputStream *ist2 = input_streams[infile->ist_index + i];
 229         if (!ist2->sub2video.ref)
 230             continue;
 231         /* subtitles seem to be usually muxed ahead of other streams;
 232            if not, substracting a larger time here is necessary */
 233         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 234         /* do not send the heartbeat frame if the subtitle is already ahead */
 235         if (pts2 <= ist2->sub2video.last_pts)
 236             continue;
 237         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 238             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 239         if (nb_reqs)
 240             sub2video_push_ref(ist2, pts2);
 241     }
 242 }
 243
 244 static void sub2video_flush(InputStream *ist)
 245 {
 246     int i;
 247
 248     for (i = 0; i < ist->nb_filters; i++)
 249         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 250 }
 251
 252 /* end of sub2video hack */
 253
 254 void term_exit(void)
 255 {
 256     av_log(NULL, AV_LOG_QUIET, "%s", "");
 257 #if HAVE_TERMIOS_H
 258     if(restore_tty)
 259         tcsetattr (0, TCSANOW, &oldtty);
 260 #endif
 261 }
 262
 263 static volatile int received_sigterm = 0;
 264 static volatile int received_nb_signals = 0;
 265
 266 static void
 267 sigterm_handler(int sig)
 268 {
 269     received_sigterm = sig;
 270     received_nb_signals++;
 271     term_exit();
 272     if(received_nb_signals > 3)
 273         exit(123);
 274 }
 275
 276 void term_init(void)
 277 {
 278 #if HAVE_TERMIOS_H
 279     if(!run_as_daemon){
 280         struct termios tty;
 281         int istty = 1;
 282 #if HAVE_ISATTY
 283         istty = isatty(0) && isatty(2);
 284 #endif
 285         if (istty && tcgetattr (0, &tty) == 0) {
 286             oldtty = tty;
 287             restore_tty = 1;
 288             atexit(term_exit);
 289
 290             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 291                              |INLCR|IGNCR|ICRNL|IXON);
 292             tty.c_oflag |= OPOST;
 293             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 294             tty.c_cflag &= ~(CSIZE|PARENB);
 295             tty.c_cflag |= CS8;
 296             tty.c_cc[VMIN] = 1;
 297             tty.c_cc[VTIME] = 0;
 298
 299             tcsetattr (0, TCSANOW, &tty);
 300         }
 301         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 302     }
 303 #endif
 304     avformat_network_deinit();
 305
 306     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 307     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 308 #ifdef SIGXCPU
 309     signal(SIGXCPU, sigterm_handler);
 310 #endif
 311 }
 312
 313 /* read a key without blocking */
 314 static int read_key(void)
 315 {
 316     unsigned char ch;
 317 #if HAVE_TERMIOS_H
 318     int n = 1;
 319     struct timeval tv;
 320     fd_set rfds;
 321
 322     FD_ZERO(&rfds);
 323     FD_SET(0, &rfds);
 324     tv.tv_sec = 0;
 325     tv.tv_usec = 0;
 326     n = select(1, &rfds, NULL, NULL, &tv);
 327     if (n > 0) {
 328         n = read(0, &ch, 1);
 329         if (n == 1)
 330             return ch;
 331
 332         return n;
 333     }
 334 #elif HAVE_KBHIT
 335 #    if HAVE_PEEKNAMEDPIPE
 336     static int is_pipe;
 337     static HANDLE input_handle;
 338     DWORD dw, nchars;
 339     if(!input_handle){
 340         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 341         is_pipe = !GetConsoleMode(input_handle, &dw);
 342     }
 343
 344     if (stdin->_cnt > 0) {
 345         read(0, &ch, 1);
 346         return ch;
 347     }
 348     if (is_pipe) {
 349         /* When running under a GUI, you will end here. */
 350         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
 351             return -1;
 352         //Read it
 353         if(nchars != 0) {
 354             read(0, &ch, 1);
 355             return ch;
 356         }else{
 357             return -1;
 358         }
 359     }
 360 #    endif
 361     if(kbhit())
 362         return(getch());
 363 #endif
 364     return -1;
 365 }
 366
 367 static int decode_interrupt_cb(void *ctx)
 368 {
 369     return received_nb_signals > 1;
 370 }
 371
 372 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 373
 374 void av_noreturn exit_program(int ret)
 375 {
 376     int i, j;
 377
 378     for (i = 0; i < nb_filtergraphs; i++) {
 379         avfilter_graph_free(&filtergraphs[i]->graph);
 380         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 381             av_freep(&filtergraphs[i]->inputs[j]->name);
 382             av_freep(&filtergraphs[i]->inputs[j]);
 383         }
 384         av_freep(&filtergraphs[i]->inputs);
 385         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 386             av_freep(&filtergraphs[i]->outputs[j]->name);
 387             av_freep(&filtergraphs[i]->outputs[j]);
 388         }
 389         av_freep(&filtergraphs[i]->outputs);
 390         av_freep(&filtergraphs[i]);
 391     }
 392     av_freep(&filtergraphs);
 393
 394     av_freep(&subtitle_out);
 395
 396     /* close files */
 397     for (i = 0; i < nb_output_files; i++) {
 398         AVFormatContext *s = output_files[i]->ctx;
 399         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 400             avio_close(s->pb);
 401         avformat_free_context(s);
 402         av_dict_free(&output_files[i]->opts);
 403         av_freep(&output_files[i]);
 404     }
 405     for (i = 0; i < nb_output_streams; i++) {
 406         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 407         while (bsfc) {
 408             AVBitStreamFilterContext *next = bsfc->next;
 409             av_bitstream_filter_close(bsfc);
 410             bsfc = next;
 411         }
 412         output_streams[i]->bitstream_filters = NULL;
 413
 414         av_freep(&output_streams[i]->forced_keyframes);
 415         av_freep(&output_streams[i]->avfilter);
 416         av_freep(&output_streams[i]->filtered_frame);
 417         av_freep(&output_streams[i]);
 418     }
 419     for (i = 0; i < nb_input_files; i++) {
 420         avformat_close_input(&input_files[i]->ctx);
 421         av_freep(&input_files[i]);
 422     }
 423     for (i = 0; i < nb_input_streams; i++) {
 424         av_freep(&input_streams[i]->decoded_frame);
 425         av_dict_free(&input_streams[i]->opts);
 426         free_buffer_pool(&input_streams[i]->buffer_pool);
 427         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
 428         av_freep(&input_streams[i]->filters);
 429         av_freep(&input_streams[i]);
 430     }
 431
 432     if (vstats_file)
 433         fclose(vstats_file);
 434     av_free(vstats_filename);
 435
 436     av_freep(&input_streams);
 437     av_freep(&input_files);
 438     av_freep(&output_streams);
 439     av_freep(&output_files);
 440
 441     uninit_opts();
 442
 443     avfilter_uninit();
 444     avformat_network_deinit();
 445
 446     if (received_sigterm) {
 447         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 448                (int) received_sigterm);
 449         exit (255);
 450     }
 451
 452     exit(ret);
 453 }
 454
 455 void assert_avoptions(AVDictionary *m)
 456 {
 457     AVDictionaryEntry *t;
 458     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 459         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 460         exit_program(1);
 461     }
 462 }
 463
 464 static void assert_codec_experimental(AVCodecContext *c, int encoder)
 465 {
 466     const char *codec_string = encoder ? "encoder" : "decoder";
 467     AVCodec *codec;
 468     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
 469         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
 470         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
 471                 "results.\nAdd '-strict experimental' if you want to use it.\n",
 472                 codec_string, c->codec->name);
 473         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
 474         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
 475             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
 476                    codec_string, codec->name);
 477         exit_program(1);
 478     }
 479 }
 480
 481 static void update_benchmark(const char *fmt, ...)
 482 {
 483     if (do_benchmark_all) {
 484         int64_t t = getutime();
 485         va_list va;
 486         char buf[1024];
 487
 488         if (fmt) {
 489             va_start(va, fmt);
 490             vsnprintf(buf, sizeof(buf), fmt, va);
 491             va_end(va);
 492             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 493         }
 494         current_time = t;
 495     }
 496 }
 497
 498 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 499 {
 500     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 501     AVCodecContext          *avctx = ost->st->codec;
 502     int ret;
 503
 504     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 505         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 506         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 507
 508     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
 509         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 510         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
 511             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
 512             pkt->pts = pkt->dts = max;
 513         }
 514     }
 515
 516     /*
 517      * Audio encoders may split the packets --  #frames in != #packets out.
 518      * But there is no reordering, so we can limit the number of output packets
 519      * by simply dropping them here.
 520      * Counting encoded video frames needs to be done separately because of
 521      * reordering, see do_video_out()
 522      */
 523     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 524         if (ost->frame_number >= ost->max_frames) {
 525             av_free_packet(pkt);
 526             return;
 527         }
 528         ost->frame_number++;
 529     }
 530
 531     while (bsfc) {
 532         AVPacket new_pkt = *pkt;
 533         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 534                                            &new_pkt.data, &new_pkt.size,
 535                                            pkt->data, pkt->size,
 536                                            pkt->flags & AV_PKT_FLAG_KEY);
 537         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 538             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
 539             if(t) {
 540                 memcpy(t, new_pkt.data, new_pkt.size);
 541                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 542                 new_pkt.data = t;
 543                 a = 1;
 544             } else
 545                 a = AVERROR(ENOMEM);
 546         }
 547         if (a > 0) {
 548             av_free_packet(pkt);
 549             new_pkt.destruct = av_destruct_packet;
 550         } else if (a < 0) {
 551             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 552                    bsfc->filter->name, pkt->stream_index,
 553                    avctx->codec ? avctx->codec->name : "copy");
 554             print_error("", a);
 555             if (exit_on_error)
 556                 exit_program(1);
 557         }
 558         *pkt = new_pkt;
 559
 560         bsfc = bsfc->next;
 561     }
 562
 563     pkt->stream_index = ost->index;
 564     ret = av_interleaved_write_frame(s, pkt);
 565     if (ret < 0) {
 566         print_error("av_interleaved_write_frame()", ret);
 567         exit_program(1);
 568     }
 569 }
 570
 571 static int check_recording_time(OutputStream *ost)
 572 {
 573     OutputFile *of = output_files[ost->file_index];
 574
 575     if (of->recording_time != INT64_MAX &&
 576         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 577                       AV_TIME_BASE_Q) >= 0) {
 578         ost->finished = 1;
 579         return 0;
 580     }
 581     return 1;
 582 }
 583
 584 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 585                          AVFrame *frame)
 586 {
 587     AVCodecContext *enc = ost->st->codec;
 588     AVPacket pkt;
 589     int got_packet = 0;
 590
 591     av_init_packet(&pkt);
 592     pkt.data = NULL;
 593     pkt.size = 0;
 594
 595     if (!check_recording_time(ost))
 596         return;
 597
 598     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 599         frame->pts = ost->sync_opts;
 600     ost->sync_opts = frame->pts + frame->nb_samples;
 601
 602     av_assert0(pkt.size || !pkt.data);
 603     update_benchmark(NULL);
 604     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 605         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 606         exit_program(1);
 607     }
 608     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 609
 610     if (got_packet) {
 611         if (pkt.pts != AV_NOPTS_VALUE)
 612             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 613         if (pkt.dts != AV_NOPTS_VALUE)
 614             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 615         if (pkt.duration > 0)
 616             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 617
 618         if (debug_ts) {
 619             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 620                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 621                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 622                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 623         }
 624
 625         write_frame(s, &pkt, ost);
 626
 627         audio_size += pkt.size;
 628         av_free_packet(&pkt);
 629     }
 630 }
 631
 632 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
 633 {
 634     AVCodecContext *dec;
 635     AVPicture *picture2;
 636     AVPicture picture_tmp;
 637     uint8_t *buf = 0;
 638
 639     dec = ist->st->codec;
 640
 641     /* deinterlace : must be done before any resize */
 642     if (do_deinterlace) {
 643         int size;
 644
 645         /* create temporary picture */
 646         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
 647         buf  = av_malloc(size);
 648         if (!buf)
 649             return;
 650
 651         picture2 = &picture_tmp;
 652         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
 653
 654         if (avpicture_deinterlace(picture2, picture,
 655                                  dec->pix_fmt, dec->width, dec->height) < 0) {
 656             /* if error, do not deinterlace */
 657             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
 658             av_free(buf);
 659             buf = NULL;
 660             picture2 = picture;
 661         }
 662     } else {
 663         picture2 = picture;
 664     }
 665
 666     if (picture != picture2)
 667         *picture = *picture2;
 668     *bufp = buf;
 669 }
 670
 671 static void do_subtitle_out(AVFormatContext *s,
 672                             OutputStream *ost,
 673                             InputStream *ist,
 674                             AVSubtitle *sub,
 675                             int64_t pts)
 676 {
 677     int subtitle_out_max_size = 1024 * 1024;
 678     int subtitle_out_size, nb, i;
 679     AVCodecContext *enc;
 680     AVPacket pkt;
 681
 682     if (pts == AV_NOPTS_VALUE) {
 683         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 684         if (exit_on_error)
 685             exit_program(1);
 686         return;
 687     }
 688
 689     enc = ost->st->codec;
 690
 691     if (!subtitle_out) {
 692         subtitle_out = av_malloc(subtitle_out_max_size);
 693     }
 694
 695     /* Note: DVB subtitle need one packet to draw them and one other
 696        packet to clear them */
 697     /* XXX: signal it in the codec context ? */
 698     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 699         nb = 2;
 700     else
 701         nb = 1;
 702
 703     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 704     pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q)
 705         - output_files[ost->file_index]->start_time;
 706     for (i = 0; i < nb; i++) {
 707         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 708         if (!check_recording_time(ost))
 709             return;
 710
 711         sub->pts = pts;
 712         // start_display_time is required to be 0
 713         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 714         sub->end_display_time  -= sub->start_display_time;
 715         sub->start_display_time = 0;
 716         if (i == 1)
 717             sub->num_rects = 0;
 718         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 719                                                     subtitle_out_max_size, sub);
 720         if (subtitle_out_size < 0) {
 721             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 722             exit_program(1);
 723         }
 724
 725         av_init_packet(&pkt);
 726         pkt.data = subtitle_out;
 727         pkt.size = subtitle_out_size;
 728         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 729         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 730         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 731             /* XXX: the pts correction is handled here. Maybe handling
 732                it in the codec would be better */
 733             if (i == 0)
 734                 pkt.pts += 90 * sub->start_display_time;
 735             else
 736                 pkt.pts += 90 * sub->end_display_time;
 737         }
 738         write_frame(s, &pkt, ost);
 739         subtitle_size += pkt.size;
 740     }
 741 }
 742
 743 static void do_video_out(AVFormatContext *s,
 744                          OutputStream *ost,
 745                          AVFrame *in_picture,
 746                          float quality)
 747 {
 748     int ret, format_video_sync;
 749     AVPacket pkt;
 750     AVCodecContext *enc = ost->st->codec;
 751     int nb_frames, i;
 752     double sync_ipts, delta;
 753     double duration = 0;
 754     int frame_size = 0;
 755     InputStream *ist = NULL;
 756
 757     if (ost->source_index >= 0)
 758         ist = input_streams[ost->source_index];
 759
 760     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 761         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 762
 763     sync_ipts = in_picture->pts;
 764     delta = sync_ipts - ost->sync_opts + duration;
 765
 766     /* by default, we output a single frame */
 767     nb_frames = 1;
 768
 769     format_video_sync = video_sync_method;
 770     if (format_video_sync == VSYNC_AUTO)
 771         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
 772
 773     switch (format_video_sync) {
 774     case VSYNC_CFR:
 775         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 776         if (delta < -1.1)
 777             nb_frames = 0;
 778         else if (delta > 1.1)
 779             nb_frames = lrintf(delta);
 780         break;
 781     case VSYNC_VFR:
 782         if (delta <= -0.6)
 783             nb_frames = 0;
 784         else if (delta > 0.6)
 785             ost->sync_opts = lrint(sync_ipts);
 786         break;
 787     case VSYNC_DROP:
 788     case VSYNC_PASSTHROUGH:
 789         ost->sync_opts = lrint(sync_ipts);
 790         break;
 791     default:
 792         av_assert0(0);
 793     }
 794
 795     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 796     if (nb_frames == 0) {
 797         nb_frames_drop++;
 798         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 799         return;
 800     } else if (nb_frames > 1) {
 801         if (nb_frames > dts_error_threshold * 30) {
 802             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skiping\n", nb_frames - 1);
 803             nb_frames_drop++;
 804             return;
 805         }
 806         nb_frames_dup += nb_frames - 1;
 807         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 808     }
 809
 810   /* duplicates frame if needed */
 811   for (i = 0; i < nb_frames; i++) {
 812     av_init_packet(&pkt);
 813     pkt.data = NULL;
 814     pkt.size = 0;
 815
 816     in_picture->pts = ost->sync_opts;
 817
 818     if (!check_recording_time(ost))
 819         return;
 820
 821     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 822         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 823         /* raw pictures are written as AVPicture structure to
 824            avoid any copies. We support temporarily the older
 825            method. */
 826         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 827         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 828         pkt.data   = (uint8_t *)in_picture;
 829         pkt.size   =  sizeof(AVPicture);
 830         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 831         pkt.flags |= AV_PKT_FLAG_KEY;
 832
 833         write_frame(s, &pkt, ost);
 834         video_size += pkt.size;
 835     } else {
 836         int got_packet;
 837         AVFrame big_picture;
 838
 839         big_picture = *in_picture;
 840         /* better than nothing: use input picture interlaced
 841            settings */
 842         big_picture.interlaced_frame = in_picture->interlaced_frame;
 843         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
 844             if (ost->top_field_first == -1)
 845                 big_picture.top_field_first = in_picture->top_field_first;
 846             else
 847                 big_picture.top_field_first = !!ost->top_field_first;
 848         }
 849
 850         /* handles same_quant here. This is not correct because it may
 851            not be a global option */
 852         big_picture.quality = quality;
 853         if (!enc->me_threshold)
 854             big_picture.pict_type = 0;
 855         if (ost->forced_kf_index < ost->forced_kf_count &&
 856             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 857             big_picture.pict_type = AV_PICTURE_TYPE_I;
 858             ost->forced_kf_index++;
 859         }
 860         update_benchmark(NULL);
 861         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
 862         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 863         if (ret < 0) {
 864             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 865             exit_program(1);
 866         }
 867
 868         if (got_packet) {
 869             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 870                 pkt.pts = ost->sync_opts;
 871
 872             if (pkt.pts != AV_NOPTS_VALUE)
 873                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 874             if (pkt.dts != AV_NOPTS_VALUE)
 875                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 876
 877             if (debug_ts) {
 878                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 879                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 880                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 881                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 882             }
 883
 884             write_frame(s, &pkt, ost);
 885             frame_size = pkt.size;
 886             video_size += pkt.size;
 887             av_free_packet(&pkt);
 888
 889             /* if two pass, output log */
 890             if (ost->logfile && enc->stats_out) {
 891                 fprintf(ost->logfile, "%s", enc->stats_out);
 892             }
 893         }
 894     }
 895     ost->sync_opts++;
 896     /*
 897      * For video, number of frames in == number of packets out.
 898      * But there may be reordering, so we can't throw away frames on encoder
 899      * flush, we need to limit them here, before they go into encoder.
 900      */
 901     ost->frame_number++;
 902   }
 903
 904     if (vstats_filename && frame_size)
 905         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
 906 }
 907
 908 static double psnr(double d)
 909 {
 910     return -10.0 * log(d) / log(10.0);
 911 }
 912
 913 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
 914                            int frame_size)
 915 {
 916     AVCodecContext *enc;
 917     int frame_number;
 918     double ti1, bitrate, avg_bitrate;
 919
 920     /* this is executed just the first time do_video_stats is called */
 921     if (!vstats_file) {
 922         vstats_file = fopen(vstats_filename, "w");
 923         if (!vstats_file) {
 924             perror("fopen");
 925             exit_program(1);
 926         }
 927     }
 928
 929     enc = ost->st->codec;
 930     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 931         frame_number = ost->frame_number;
 932         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
 933         if (enc->flags&CODEC_FLAG_PSNR)
 934             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
 935
 936         fprintf(vstats_file,"f_size= %6d ", frame_size);
 937         /* compute pts value */
 938         ti1 = ost->sync_opts * av_q2d(enc->time_base);
 939         if (ti1 < 0.01)
 940             ti1 = 0.01;
 941
 942         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
 943         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
 944         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
 945                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
 946         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
 947     }
 948 }
 949
 950 /* check for new output on any of the filtergraphs */
 951 static int poll_filters(void)
 952 {
 953     AVFilterBufferRef *picref;
 954     AVFrame *filtered_frame = NULL;
 955     int i, ret, ret_all;
 956     unsigned nb_success = 1, av_uninit(nb_eof);
 957     int64_t frame_pts;
 958
 959     while (1) {
 960         /* Reap all buffers present in the buffer sinks */
 961         for (i = 0; i < nb_output_streams; i++) {
 962             OutputStream *ost = output_streams[i];
 963             OutputFile    *of = output_files[ost->file_index];
 964             int ret = 0;
 965
 966             if (!ost->filter)
 967                 continue;
 968
 969             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
 970                 return AVERROR(ENOMEM);
 971             } else
 972                 avcodec_get_frame_defaults(ost->filtered_frame);
 973             filtered_frame = ost->filtered_frame;
 974
 975             while (1) {
 976                 ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
 977                                                    AV_BUFFERSINK_FLAG_NO_REQUEST);
 978                 if (ret < 0) {
 979                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
 980                         char buf[256];
 981                         av_strerror(ret, buf, sizeof(buf));
 982                         av_log(NULL, AV_LOG_WARNING,
 983                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
 984                     }
 985                     break;
 986                 }
 987                 frame_pts = AV_NOPTS_VALUE;
 988                 if (picref->pts != AV_NOPTS_VALUE) {
 989                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
 990                                                     ost->filter->filter->inputs[0]->time_base,
 991                                                     ost->st->codec->time_base) -
 992                                         av_rescale_q(of->start_time,
 993                                                     AV_TIME_BASE_Q,
 994                                                     ost->st->codec->time_base);
 995
 996                     if (of->start_time && filtered_frame->pts < 0) {
 997                         avfilter_unref_buffer(picref);
 998                         continue;
 999                     }
1000                 }
1001                 //if (ost->source_index >= 0)
1002                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1003
1004
1005                 switch (ost->filter->filter->inputs[0]->type) {
1006                 case AVMEDIA_TYPE_VIDEO:
1007                     avfilter_copy_buf_props(filtered_frame, picref);
1008                     filtered_frame->pts = frame_pts;
1009                     if (!ost->frame_aspect_ratio)
1010                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1011
1012                     do_video_out(of->ctx, ost, filtered_frame,
1013                                  same_quant ? ost->last_quality :
1014                                               ost->st->codec->global_quality);
1015                     break;
1016                 case AVMEDIA_TYPE_AUDIO:
1017                     avfilter_copy_buf_props(filtered_frame, picref);
1018                     filtered_frame->pts = frame_pts;
1019                     do_audio_out(of->ctx, ost, filtered_frame);
1020                     break;
1021                 default:
1022                     // TODO support subtitle filters
1023                     av_assert0(0);
1024                 }
1025
1026                 avfilter_unref_buffer(picref);
1027             }
1028         }
1029         if (!nb_success) /* from last round */
1030             break;
1031         /* Request frames through all the graphs */
1032         ret_all = nb_success = nb_eof = 0;
1033         for (i = 0; i < nb_filtergraphs; i++) {
1034             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
1035             if (!ret) {
1036                 nb_success++;
1037             } else if (ret == AVERROR_EOF) {
1038                 nb_eof++;
1039             } else if (ret != AVERROR(EAGAIN)) {
1040                 char buf[256];
1041                 av_strerror(ret, buf, sizeof(buf));
1042                 av_log(NULL, AV_LOG_WARNING,
1043                        "Error in request_frame(): %s\n", buf);
1044                 ret_all = ret;
1045             }
1046         }
1047         /* Try again if anything succeeded */
1048     }
1049     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
1050 }
1051
1052 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1053 {
1054     char buf[1024];
1055     AVBPrint buf_script;
1056     OutputStream *ost;
1057     AVFormatContext *oc;
1058     int64_t total_size;
1059     AVCodecContext *enc;
1060     int frame_number, vid, i;
1061     double bitrate;
1062     int64_t pts = INT64_MAX;
1063     static int64_t last_time = -1;
1064     static int qp_histogram[52];
1065     int hours, mins, secs, us;
1066
1067     if (!print_stats && !is_last_report && !progress_avio)
1068         return;
1069
1070     if (!is_last_report) {
1071         if (last_time == -1) {
1072             last_time = cur_time;
1073             return;
1074         }
1075         if ((cur_time - last_time) < 500000)
1076             return;
1077         last_time = cur_time;
1078     }
1079
1080
1081     oc = output_files[0]->ctx;
1082
1083     total_size = avio_size(oc->pb);
1084     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1085         total_size = avio_tell(oc->pb);
1086         if (total_size < 0)
1087             total_size = 0;
1088     }
1089
1090     buf[0] = '\0';
1091     vid = 0;
1092     av_bprint_init(&buf_script, 0, 1);
1093     for (i = 0; i < nb_output_streams; i++) {
1094         float q = -1;
1095         ost = output_streams[i];
1096         enc = ost->st->codec;
1097         if (!ost->stream_copy && enc->coded_frame)
1098             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1099         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1100             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1101             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1102                        ost->file_index, ost->index, q);
1103         }
1104         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1105             float fps, t = (cur_time-timer_start) / 1000000.0;
1106
1107             frame_number = ost->frame_number;
1108             fps = t > 1 ? frame_number / t : 0;
1109             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1110                      frame_number, fps < 9.95, fps, q);
1111             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1112             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1113             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1114                        ost->file_index, ost->index, q);
1115             if (is_last_report)
1116                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1117             if (qp_hist) {
1118                 int j;
1119                 int qp = lrintf(q);
1120                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1121                     qp_histogram[qp]++;
1122                 for (j = 0; j < 32; j++)
1123                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1124             }
1125             if (enc->flags&CODEC_FLAG_PSNR) {
1126                 int j;
1127                 double error, error_sum = 0;
1128                 double scale, scale_sum = 0;
1129                 double p;
1130                 char type[3] = { 'Y','U','V' };
1131                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1132                 for (j = 0; j < 3; j++) {
1133                     if (is_last_report) {
1134                         error = enc->error[j];
1135                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1136                     } else {
1137                         error = enc->coded_frame->error[j];
1138                         scale = enc->width * enc->height * 255.0 * 255.0;
1139                     }
1140                     if (j)
1141                         scale /= 4;
1142                     error_sum += error;
1143                     scale_sum += scale;
1144                     p = psnr(error / scale);
1145                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1146                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1147                                ost->file_index, ost->index, type[i] | 32, p);
1148                 }
1149                 p = psnr(error_sum / scale_sum);
1150                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1151                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1152                            ost->file_index, ost->index, p);
1153             }
1154             vid = 1;
1155         }
1156         /* compute min output value */
1157         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1158                                       ost->st->time_base, AV_TIME_BASE_Q));
1159     }
1160
1161     secs = pts / AV_TIME_BASE;
1162     us = pts % AV_TIME_BASE;
1163     mins = secs / 60;
1164     secs %= 60;
1165     hours = mins / 60;
1166     mins %= 60;
1167
1168     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1169
1170     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1171              "size=%8.0fkB time=", total_size / 1024.0);
1172     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1173              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1174              (100 * us) / AV_TIME_BASE);
1175     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1176              "bitrate=%6.1fkbits/s", bitrate);
1177     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1178     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1179     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1180                hours, mins, secs, us);
1181
1182     if (nb_frames_dup || nb_frames_drop)
1183         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1184                 nb_frames_dup, nb_frames_drop);
1185     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1186     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1187
1188     if (print_stats || is_last_report) {
1189     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1190
1191     fflush(stderr);
1192     }
1193
1194     if (progress_avio) {
1195         av_bprintf(&buf_script, "progress=%s\n",
1196                    is_last_report ? "end" : "continue");
1197         avio_write(progress_avio, buf_script.str,
1198                    FFMIN(buf_script.len, buf_script.size - 1));
1199         avio_flush(progress_avio);
1200         av_bprint_finalize(&buf_script, NULL);
1201         if (is_last_report) {
1202             avio_close(progress_avio);
1203             progress_avio = NULL;
1204         }
1205     }
1206
1207     if (is_last_report) {
1208         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1209         av_log(NULL, AV_LOG_INFO, "\n");
1210         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1211                video_size / 1024.0,
1212                audio_size / 1024.0,
1213                subtitle_size / 1024.0,
1214                extra_size / 1024.0,
1215                100.0 * (total_size - raw) / raw
1216         );
1217         if(video_size + audio_size + subtitle_size + extra_size == 0){
1218             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1219         }
1220     }
1221 }
1222
1223 static void flush_encoders(void)
1224 {
1225     int i, ret;
1226
1227     for (i = 0; i < nb_output_streams; i++) {
1228         OutputStream   *ost = output_streams[i];
1229         AVCodecContext *enc = ost->st->codec;
1230         AVFormatContext *os = output_files[ost->file_index]->ctx;
1231         int stop_encoding = 0;
1232
1233         if (!ost->encoding_needed)
1234             continue;
1235
1236         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1237             continue;
1238         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1239             continue;
1240
1241         for (;;) {
1242             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1243             const char *desc;
1244             int64_t *size;
1245
1246             switch (ost->st->codec->codec_type) {
1247             case AVMEDIA_TYPE_AUDIO:
1248                 encode = avcodec_encode_audio2;
1249                 desc   = "Audio";
1250                 size   = &audio_size;
1251                 break;
1252             case AVMEDIA_TYPE_VIDEO:
1253                 encode = avcodec_encode_video2;
1254                 desc   = "Video";
1255                 size   = &video_size;
1256                 break;
1257             default:
1258                 stop_encoding = 1;
1259             }
1260
1261             if (encode) {
1262                 AVPacket pkt;
1263                 int got_packet;
1264                 av_init_packet(&pkt);
1265                 pkt.data = NULL;
1266                 pkt.size = 0;
1267
1268                 update_benchmark(NULL);
1269                 ret = encode(enc, &pkt, NULL, &got_packet);
1270                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1271                 if (ret < 0) {
1272                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1273                     exit_program(1);
1274                 }
1275                 *size += pkt.size;
1276                 if (ost->logfile && enc->stats_out) {
1277                     fprintf(ost->logfile, "%s", enc->stats_out);
1278                 }
1279                 if (!got_packet) {
1280                     stop_encoding = 1;
1281                     break;
1282                 }
1283                 if (pkt.pts != AV_NOPTS_VALUE)
1284                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1285                 if (pkt.dts != AV_NOPTS_VALUE)
1286                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1287                 write_frame(os, &pkt, ost);
1288             }
1289
1290             if (stop_encoding)
1291                 break;
1292         }
1293     }
1294 }
1295
1296 /*
1297  * Check whether a packet from ist should be written into ost at this time
1298  */
1299 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1300 {
1301     OutputFile *of = output_files[ost->file_index];
1302     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1303
1304     if (ost->source_index != ist_index)
1305         return 0;
1306
1307     if (of->start_time && ist->pts < of->start_time)
1308         return 0;
1309
1310     return 1;
1311 }
1312
1313 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1314 {
1315     OutputFile *of = output_files[ost->file_index];
1316     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1317     AVPicture pict;
1318     AVPacket opkt;
1319
1320     av_init_packet(&opkt);
1321
1322     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1323         !ost->copy_initial_nonkeyframes)
1324         return;
1325
1326     if (of->recording_time != INT64_MAX &&
1327         ist->pts >= of->recording_time + of->start_time) {
1328         ost->finished = 1;
1329         return;
1330     }
1331
1332     /* force the input stream PTS */
1333     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1334         audio_size += pkt->size;
1335     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1336         video_size += pkt->size;
1337         ost->sync_opts++;
1338     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1339         subtitle_size += pkt->size;
1340     }
1341
1342     if (pkt->pts != AV_NOPTS_VALUE)
1343         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1344     else
1345         opkt.pts = AV_NOPTS_VALUE;
1346
1347     if (pkt->dts == AV_NOPTS_VALUE)
1348         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1349     else
1350         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1351     opkt.dts -= ost_tb_start_time;
1352
1353     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1354     opkt.flags    = pkt->flags;
1355
1356     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1357     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1358        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1359        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1360        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1361        ) {
1362         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1363             opkt.destruct = av_destruct_packet;
1364     } else {
1365         opkt.data = pkt->data;
1366         opkt.size = pkt->size;
1367     }
1368
1369     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1370         /* store AVPicture in AVPacket, as expected by the output format */
1371         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1372         opkt.data = (uint8_t *)&pict;
1373         opkt.size = sizeof(AVPicture);
1374         opkt.flags |= AV_PKT_FLAG_KEY;
1375     }
1376
1377     write_frame(of->ctx, &opkt, ost);
1378     ost->st->codec->frame_number++;
1379     av_free_packet(&opkt);
1380 }
1381
1382 static void rate_emu_sleep(InputStream *ist)
1383 {
1384     if (input_files[ist->file_index]->rate_emu) {
1385         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1386         int64_t now = av_gettime() - ist->start;
1387         if (pts > now)
1388             av_usleep(pts - now);
1389     }
1390 }
1391
1392 int guess_input_channel_layout(InputStream *ist)
1393 {
1394     AVCodecContext *dec = ist->st->codec;
1395
1396     if (!dec->channel_layout) {
1397         char layout_name[256];
1398
1399         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1400         if (!dec->channel_layout)
1401             return 0;
1402         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1403                                      dec->channels, dec->channel_layout);
1404         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1405                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1406     }
1407     return 1;
1408 }
1409
1410 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1411 {
1412     AVFrame *decoded_frame;
1413     AVCodecContext *avctx = ist->st->codec;
1414     int i, ret, resample_changed;
1415     AVRational decoded_frame_tb;
1416
1417     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1418         return AVERROR(ENOMEM);
1419     else
1420         avcodec_get_frame_defaults(ist->decoded_frame);
1421     decoded_frame = ist->decoded_frame;
1422
1423     update_benchmark(NULL);
1424     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1425     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1426
1427     if (ret >= 0 && avctx->sample_rate <= 0) {
1428         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1429         return AVERROR_INVALIDDATA;
1430     }
1431
1432     if (!*got_output || ret < 0) {
1433         if (!pkt->size) {
1434             for (i = 0; i < ist->nb_filters; i++)
1435                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
1436                                      AV_BUFFERSRC_FLAG_NO_COPY);
1437         }
1438         return ret;
1439     }
1440
1441 #if 1
1442     /* increment next_dts to use for the case where the input stream does not
1443        have timestamps or there are multiple frames in the packet */
1444     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1445                      avctx->sample_rate;
1446     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1447                      avctx->sample_rate;
1448 #endif
1449
1450     rate_emu_sleep(ist);
1451
1452     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1453                        ist->resample_channels       != avctx->channels               ||
1454                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1455                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1456     if (resample_changed) {
1457         char layout1[64], layout2[64];
1458
1459         if (!guess_input_channel_layout(ist)) {
1460             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1461                    "layout for Input Stream #%d.%d\n", ist->file_index,
1462                    ist->st->index);
1463             exit_program(1);
1464         }
1465         decoded_frame->channel_layout = avctx->channel_layout;
1466
1467         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1468                                      ist->resample_channel_layout);
1469         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1470                                      decoded_frame->channel_layout);
1471
1472         av_log(NULL, AV_LOG_INFO,
1473                "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",
1474                ist->file_index, ist->st->index,
1475                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1476                ist->resample_channels, layout1,
1477                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1478                avctx->channels, layout2);
1479
1480         ist->resample_sample_fmt     = decoded_frame->format;
1481         ist->resample_sample_rate    = decoded_frame->sample_rate;
1482         ist->resample_channel_layout = decoded_frame->channel_layout;
1483         ist->resample_channels       = avctx->channels;
1484
1485         for (i = 0; i < nb_filtergraphs; i++)
1486             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1487                 FilterGraph *fg = filtergraphs[i];
1488                 int j;
1489                 if (configure_filtergraph(fg) < 0) {
1490                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1491                     exit_program(1);
1492                 }
1493                 for (j = 0; j < fg->nb_outputs; j++) {
1494                     OutputStream *ost = fg->outputs[j]->ost;
1495                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1496                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1497                         av_buffersink_set_frame_size(ost->filter->filter,
1498                                                      ost->st->codec->frame_size);
1499                 }
1500             }
1501     }
1502
1503     /* if the decoder provides a pts, use it instead of the last packet pts.
1504        the decoder could be delaying output by a packet or more. */
1505     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1506         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1507         decoded_frame_tb   = avctx->time_base;
1508     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1509         decoded_frame->pts = decoded_frame->pkt_pts;
1510         pkt->pts           = AV_NOPTS_VALUE;
1511         decoded_frame_tb   = ist->st->time_base;
1512     } else if (pkt->pts != AV_NOPTS_VALUE) {
1513         decoded_frame->pts = pkt->pts;
1514         pkt->pts           = AV_NOPTS_VALUE;
1515         decoded_frame_tb   = ist->st->time_base;
1516     }else {
1517         decoded_frame->pts = ist->dts;
1518         decoded_frame_tb   = AV_TIME_BASE_Q;
1519     }
1520     if (decoded_frame->pts != AV_NOPTS_VALUE)
1521         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1522                                           decoded_frame_tb,
1523                                           (AVRational){1, ist->st->codec->sample_rate});
1524     for (i = 0; i < ist->nb_filters; i++)
1525         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
1526
1527     decoded_frame->pts = AV_NOPTS_VALUE;
1528
1529     return ret;
1530 }
1531
1532 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1533 {
1534     AVFrame *decoded_frame;
1535     void *buffer_to_free = NULL;
1536     int i, ret = 0, resample_changed;
1537     int64_t best_effort_timestamp;
1538     AVRational *frame_sample_aspect;
1539     float quality;
1540
1541     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1542         return AVERROR(ENOMEM);
1543     else
1544         avcodec_get_frame_defaults(ist->decoded_frame);
1545     decoded_frame = ist->decoded_frame;
1546     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1547
1548     update_benchmark(NULL);
1549     ret = avcodec_decode_video2(ist->st->codec,
1550                                 decoded_frame, got_output, pkt);
1551     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1552     if (!*got_output || ret < 0) {
1553         if (!pkt->size) {
1554             for (i = 0; i < ist->nb_filters; i++)
1555                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
1556         }
1557         return ret;
1558     }
1559
1560     quality = same_quant ? decoded_frame->quality : 0;
1561
1562     if(ist->top_field_first>=0)
1563         decoded_frame->top_field_first = ist->top_field_first;
1564
1565     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1566     if(best_effort_timestamp != AV_NOPTS_VALUE)
1567         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1568
1569     if (debug_ts) {
1570         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1571                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1572                 ist->st->index, av_ts2str(decoded_frame->pts),
1573                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1574                 best_effort_timestamp,
1575                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1576                 decoded_frame->key_frame, decoded_frame->pict_type);
1577     }
1578
1579     pkt->size = 0;
1580     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1581
1582     rate_emu_sleep(ist);
1583
1584     if (ist->st->sample_aspect_ratio.num)
1585         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1586
1587     resample_changed = ist->resample_width   != decoded_frame->width  ||
1588                        ist->resample_height  != decoded_frame->height ||
1589                        ist->resample_pix_fmt != decoded_frame->format;
1590     if (resample_changed) {
1591         av_log(NULL, AV_LOG_INFO,
1592                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1593                ist->file_index, ist->st->index,
1594                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1595                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1596
1597         ist->resample_width   = decoded_frame->width;
1598         ist->resample_height  = decoded_frame->height;
1599         ist->resample_pix_fmt = decoded_frame->format;
1600
1601         for (i = 0; i < nb_filtergraphs; i++)
1602             if (ist_in_filtergraph(filtergraphs[i], ist) &&
1603                 configure_filtergraph(filtergraphs[i]) < 0) {
1604                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1605                 exit_program(1);
1606             }
1607     }
1608
1609     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1610     for (i = 0; i < ist->nb_filters; i++) {
1611         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1612                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1613                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1614         // XXX what an ugly hack
1615         if (ist->filters[i]->graph->nb_outputs == 1)
1616             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
1617
1618         if (!frame_sample_aspect->num)
1619             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1620         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1621             FrameBuffer      *buf = decoded_frame->opaque;
1622             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1623                                         decoded_frame->data, decoded_frame->linesize,
1624                                         AV_PERM_READ | AV_PERM_PRESERVE,
1625                                         ist->st->codec->width, ist->st->codec->height,
1626                                         ist->st->codec->pix_fmt);
1627
1628             avfilter_copy_frame_props(fb, decoded_frame);
1629             fb->buf->priv           = buf;
1630             fb->buf->free           = filter_release_buffer;
1631
1632             av_assert0(buf->refcount>0);
1633             buf->refcount++;
1634             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1635                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1636                                  AV_BUFFERSRC_FLAG_NO_COPY);
1637         } else
1638         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
1639             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1640             exit_program(1);
1641         }
1642
1643     }
1644
1645     av_free(buffer_to_free);
1646     return ret;
1647 }
1648
1649 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1650 {
1651     AVSubtitle subtitle;
1652     int64_t pts = pkt->pts;
1653     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1654                                           &subtitle, got_output, pkt);
1655     if (ret < 0 || !*got_output) {
1656         if (!pkt->size)
1657             sub2video_flush(ist);
1658         return ret;
1659     }
1660
1661     if (ist->fix_sub_duration) {
1662         if (ist->prev_sub.got_output) {
1663             int end = av_rescale_q(pts - ist->prev_sub.pts, ist->st->time_base,
1664                                    (AVRational){ 1, 1000 });
1665             if (end < ist->prev_sub.subtitle.end_display_time) {
1666                 av_log(ist->st->codec, AV_LOG_DEBUG,
1667                        "Subtitle duration reduced from %d to %d\n",
1668                        ist->prev_sub.subtitle.end_display_time, end);
1669                 ist->prev_sub.subtitle.end_display_time = end;
1670             }
1671         }
1672         FFSWAP(int64_t,    pts,         ist->prev_sub.pts);
1673         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1674         FFSWAP(int,        ret,         ist->prev_sub.ret);
1675         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1676     }
1677
1678     if (!*got_output || !subtitle.num_rects)
1679         return ret;
1680
1681     rate_emu_sleep(ist);
1682
1683     sub2video_update(ist, &subtitle, pkt->pts);
1684
1685     for (i = 0; i < nb_output_streams; i++) {
1686         OutputStream *ost = output_streams[i];
1687
1688         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1689             continue;
1690
1691         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pts);
1692     }
1693
1694     avsubtitle_free(&subtitle);
1695     return ret;
1696 }
1697
1698 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1699 static int output_packet(InputStream *ist, const AVPacket *pkt)
1700 {
1701     int ret = 0, i;
1702     int got_output;
1703
1704     AVPacket avpkt;
1705     if (!ist->saw_first_ts) {
1706         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;
1707         ist->pts = 0;
1708         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1709             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1710             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1711         }
1712         ist->saw_first_ts = 1;
1713     }
1714
1715     if (ist->next_dts == AV_NOPTS_VALUE)
1716         ist->next_dts = ist->dts;
1717     if (ist->next_pts == AV_NOPTS_VALUE)
1718         ist->next_pts = ist->pts;
1719
1720     if (pkt == NULL) {
1721         /* EOF handling */
1722         av_init_packet(&avpkt);
1723         avpkt.data = NULL;
1724         avpkt.size = 0;
1725         goto handle_eof;
1726     } else {
1727         avpkt = *pkt;
1728     }
1729
1730     if (pkt->dts != AV_NOPTS_VALUE) {
1731         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1732         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1733             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1734     }
1735
1736     // while we have more to decode or while the decoder did output something on EOF
1737     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1738         int duration;
1739     handle_eof:
1740
1741         ist->pts = ist->next_pts;
1742         ist->dts = ist->next_dts;
1743
1744         if (avpkt.size && avpkt.size != pkt->size) {
1745             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1746                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1747             ist->showed_multi_packet_warning = 1;
1748         }
1749
1750         switch (ist->st->codec->codec_type) {
1751         case AVMEDIA_TYPE_AUDIO:
1752             ret = decode_audio    (ist, &avpkt, &got_output);
1753             break;
1754         case AVMEDIA_TYPE_VIDEO:
1755             ret = decode_video    (ist, &avpkt, &got_output);
1756             if (avpkt.duration) {
1757                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1758             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1759                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1760                 duration = ((int64_t)AV_TIME_BASE *
1761                                 ist->st->codec->time_base.num * ticks) /
1762                                 ist->st->codec->time_base.den;
1763             } else
1764                 duration = 0;
1765
1766             if(ist->dts != AV_NOPTS_VALUE && duration) {
1767                 ist->next_dts += duration;
1768             }else
1769                 ist->next_dts = AV_NOPTS_VALUE;
1770
1771             if (got_output)
1772                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1773             break;
1774         case AVMEDIA_TYPE_SUBTITLE:
1775             ret = transcode_subtitles(ist, &avpkt, &got_output);
1776             break;
1777         default:
1778             return -1;
1779         }
1780
1781         if (ret < 0)
1782             return ret;
1783
1784         avpkt.dts=
1785         avpkt.pts= AV_NOPTS_VALUE;
1786
1787         // touch data and size only if not EOF
1788         if (pkt) {
1789             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1790                 ret = avpkt.size;
1791             avpkt.data += ret;
1792             avpkt.size -= ret;
1793         }
1794         if (!got_output) {
1795             continue;
1796         }
1797     }
1798
1799     /* handle stream copy */
1800     if (!ist->decoding_needed) {
1801         rate_emu_sleep(ist);
1802         ist->dts = ist->next_dts;
1803         switch (ist->st->codec->codec_type) {
1804         case AVMEDIA_TYPE_AUDIO:
1805             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1806                              ist->st->codec->sample_rate;
1807             break;
1808         case AVMEDIA_TYPE_VIDEO:
1809             if (pkt->duration) {
1810                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1811             } else if(ist->st->codec->time_base.num != 0) {
1812                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1813                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1814                                   ist->st->codec->time_base.num * ticks) /
1815                                   ist->st->codec->time_base.den;
1816             }
1817             break;
1818         }
1819         ist->pts = ist->dts;
1820         ist->next_pts = ist->next_dts;
1821     }
1822     for (i = 0; pkt && i < nb_output_streams; i++) {
1823         OutputStream *ost = output_streams[i];
1824
1825         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1826             continue;
1827
1828         do_streamcopy(ist, ost, pkt);
1829     }
1830
1831     return 0;
1832 }
1833
1834 static void print_sdp(void)
1835 {
1836     char sdp[2048];
1837     int i;
1838     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1839
1840     if (!avc)
1841         exit_program(1);
1842     for (i = 0; i < nb_output_files; i++)
1843         avc[i] = output_files[i]->ctx;
1844
1845     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1846     printf("SDP:\n%s\n", sdp);
1847     fflush(stdout);
1848     av_freep(&avc);
1849 }
1850
1851 static int init_input_stream(int ist_index, char *error, int error_len)
1852 {
1853     InputStream *ist = input_streams[ist_index];
1854
1855     if (ist->decoding_needed) {
1856         AVCodec *codec = ist->dec;
1857         if (!codec) {
1858             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1859                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1860             return AVERROR(EINVAL);
1861         }
1862
1863         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1864         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1865             ist->st->codec->get_buffer     = codec_get_buffer;
1866             ist->st->codec->release_buffer = codec_release_buffer;
1867             ist->st->codec->opaque         = &ist->buffer_pool;
1868         }
1869
1870         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1871             av_dict_set(&ist->opts, "threads", "auto", 0);
1872         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1873             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1874                     ist->file_index, ist->st->index);
1875             return AVERROR(EINVAL);
1876         }
1877         assert_codec_experimental(ist->st->codec, 0);
1878         assert_avoptions(ist->opts);
1879     }
1880
1881     ist->next_pts = AV_NOPTS_VALUE;
1882     ist->next_dts = AV_NOPTS_VALUE;
1883     ist->is_start = 1;
1884
1885     return 0;
1886 }
1887
1888 static InputStream *get_input_stream(OutputStream *ost)
1889 {
1890     if (ost->source_index >= 0)
1891         return input_streams[ost->source_index];
1892     return NULL;
1893 }
1894
1895 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1896                                     AVCodecContext *avctx)
1897 {
1898     char *p;
1899     int n = 1, i;
1900     int64_t t;
1901
1902     for (p = kf; *p; p++)
1903         if (*p == ',')
1904             n++;
1905     ost->forced_kf_count = n;
1906     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1907     if (!ost->forced_kf_pts) {
1908         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1909         exit_program(1);
1910     }
1911
1912     p = kf;
1913     for (i = 0; i < n; i++) {
1914         char *next = strchr(p, ',');
1915
1916         if (next)
1917             *next++ = 0;
1918
1919         t = parse_time_or_die("force_key_frames", p, 1);
1920         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1921
1922         p = next;
1923     }
1924 }
1925
1926 static void report_new_stream(int input_index, AVPacket *pkt)
1927 {
1928     InputFile *file = input_files[input_index];
1929     AVStream *st = file->ctx->streams[pkt->stream_index];
1930
1931     if (pkt->stream_index < file->nb_streams_warn)
1932         return;
1933     av_log(file->ctx, AV_LOG_WARNING,
1934            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1935            av_get_media_type_string(st->codec->codec_type),
1936            input_index, pkt->stream_index,
1937            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1938     file->nb_streams_warn = pkt->stream_index + 1;
1939 }
1940
1941 static int transcode_init(void)
1942 {
1943     int ret = 0, i, j, k;
1944     AVFormatContext *oc;
1945     AVCodecContext *codec;
1946     OutputStream *ost;
1947     InputStream *ist;
1948     char error[1024];
1949     int want_sdp = 1;
1950
1951     /* init framerate emulation */
1952     for (i = 0; i < nb_input_files; i++) {
1953         InputFile *ifile = input_files[i];
1954         if (ifile->rate_emu)
1955             for (j = 0; j < ifile->nb_streams; j++)
1956                 input_streams[j + ifile->ist_index]->start = av_gettime();
1957     }
1958
1959     /* output stream init */
1960     for (i = 0; i < nb_output_files; i++) {
1961         oc = output_files[i]->ctx;
1962         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1963             av_dump_format(oc, i, oc->filename, 1);
1964             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1965             return AVERROR(EINVAL);
1966         }
1967     }
1968
1969     /* init complex filtergraphs */
1970     for (i = 0; i < nb_filtergraphs; i++)
1971         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1972             return ret;
1973
1974     /* for each output stream, we compute the right encoding parameters */
1975     for (i = 0; i < nb_output_streams; i++) {
1976         AVCodecContext *icodec = NULL;
1977         ost = output_streams[i];
1978         oc  = output_files[ost->file_index]->ctx;
1979         ist = get_input_stream(ost);
1980
1981         if (ost->attachment_filename)
1982             continue;
1983
1984         codec  = ost->st->codec;
1985
1986         if (ist) {
1987             icodec = ist->st->codec;
1988
1989             ost->st->disposition          = ist->st->disposition;
1990             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
1991             codec->chroma_sample_location = icodec->chroma_sample_location;
1992         }
1993
1994         if (ost->stream_copy) {
1995             uint64_t extra_size;
1996
1997             av_assert0(ist && !ost->filter);
1998
1999             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2000
2001             if (extra_size > INT_MAX) {
2002                 return AVERROR(EINVAL);
2003             }
2004
2005             /* if stream_copy is selected, no need to decode or encode */
2006             codec->codec_id   = icodec->codec_id;
2007             codec->codec_type = icodec->codec_type;
2008
2009             if (!codec->codec_tag) {
2010                 if (!oc->oformat->codec_tag ||
2011                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2012                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2013                     codec->codec_tag = icodec->codec_tag;
2014             }
2015
2016             codec->bit_rate       = icodec->bit_rate;
2017             codec->rc_max_rate    = icodec->rc_max_rate;
2018             codec->rc_buffer_size = icodec->rc_buffer_size;
2019             codec->field_order    = icodec->field_order;
2020             codec->extradata      = av_mallocz(extra_size);
2021             if (!codec->extradata) {
2022                 return AVERROR(ENOMEM);
2023             }
2024             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2025             codec->extradata_size= icodec->extradata_size;
2026             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2027
2028             codec->time_base = ist->st->time_base;
2029             /*
2030              * Avi is a special case here because it supports variable fps but
2031              * having the fps and timebase differe significantly adds quite some
2032              * overhead
2033              */
2034             if(!strcmp(oc->oformat->name, "avi")) {
2035                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2036                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2037                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2038                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2039                      || copy_tb==2){
2040                     codec->time_base.num = ist->st->r_frame_rate.den;
2041                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2042                     codec->ticks_per_frame = 2;
2043                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2044                                  && av_q2d(ist->st->time_base) < 1.0/500
2045                     || copy_tb==0){
2046                     codec->time_base = icodec->time_base;
2047                     codec->time_base.num *= icodec->ticks_per_frame;
2048                     codec->time_base.den *= 2;
2049                     codec->ticks_per_frame = 2;
2050                 }
2051             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2052                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2053                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2054             ) {
2055                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2056                                 && av_q2d(ist->st->time_base) < 1.0/500
2057                    || copy_tb==0){
2058                     codec->time_base = icodec->time_base;
2059                     codec->time_base.num *= icodec->ticks_per_frame;
2060                 }
2061             }
2062
2063             if(ost->frame_rate.num)
2064                 codec->time_base = av_inv_q(ost->frame_rate);
2065
2066             av_reduce(&codec->time_base.num, &codec->time_base.den,
2067                         codec->time_base.num, codec->time_base.den, INT_MAX);
2068
2069             switch (codec->codec_type) {
2070             case AVMEDIA_TYPE_AUDIO:
2071                 if (audio_volume != 256) {
2072                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2073                     exit_program(1);
2074                 }
2075                 codec->channel_layout     = icodec->channel_layout;
2076                 codec->sample_rate        = icodec->sample_rate;
2077                 codec->channels           = icodec->channels;
2078                 codec->frame_size         = icodec->frame_size;
2079                 codec->audio_service_type = icodec->audio_service_type;
2080                 codec->block_align        = icodec->block_align;
2081                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2082                     codec->block_align= 0;
2083                 if(codec->codec_id == AV_CODEC_ID_AC3)
2084                     codec->block_align= 0;
2085                 break;
2086             case AVMEDIA_TYPE_VIDEO:
2087                 codec->pix_fmt            = icodec->pix_fmt;
2088                 codec->width              = icodec->width;
2089                 codec->height             = icodec->height;
2090                 codec->has_b_frames       = icodec->has_b_frames;
2091                 if (!codec->sample_aspect_ratio.num) {
2092                     codec->sample_aspect_ratio   =
2093                     ost->st->sample_aspect_ratio =
2094                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2095                         ist->st->codec->sample_aspect_ratio.num ?
2096                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2097                 }
2098                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2099                 break;
2100             case AVMEDIA_TYPE_SUBTITLE:
2101                 codec->width  = icodec->width;
2102                 codec->height = icodec->height;
2103                 break;
2104             case AVMEDIA_TYPE_DATA:
2105             case AVMEDIA_TYPE_ATTACHMENT:
2106                 break;
2107             default:
2108                 abort();
2109             }
2110         } else {
2111             if (!ost->enc)
2112                 ost->enc = avcodec_find_encoder(codec->codec_id);
2113             if (!ost->enc) {
2114                 /* should only happen when a default codec is not present. */
2115                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2116                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2117                 ret = AVERROR(EINVAL);
2118                 goto dump_format;
2119             }
2120
2121             if (ist)
2122                 ist->decoding_needed = 1;
2123             ost->encoding_needed = 1;
2124
2125             if (!ost->filter &&
2126                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2127                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2128                     FilterGraph *fg;
2129                     fg = init_simple_filtergraph(ist, ost);
2130                     if (configure_filtergraph(fg)) {
2131                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2132                         exit(1);
2133                     }
2134             }
2135
2136             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2137                 if (ost->filter && !ost->frame_rate.num)
2138                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2139                 if (ist && !ost->frame_rate.num)
2140                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2141 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2142                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2143                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2144                     ost->frame_rate = ost->enc->supported_framerates[idx];
2145                 }
2146             }
2147
2148             switch (codec->codec_type) {
2149             case AVMEDIA_TYPE_AUDIO:
2150                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2151                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2152                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2153                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2154                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2155                 break;
2156             case AVMEDIA_TYPE_VIDEO:
2157                 codec->time_base = av_inv_q(ost->frame_rate);
2158                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2159                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2160                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2161                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2162                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2163                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2164                 }
2165                 for (j = 0; j < ost->forced_kf_count; j++)
2166                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2167                                                          AV_TIME_BASE_Q,
2168                                                          codec->time_base);
2169
2170                 codec->width  = ost->filter->filter->inputs[0]->w;
2171                 codec->height = ost->filter->filter->inputs[0]->h;
2172                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2173                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2174                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2175                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2176                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2177
2178                 if (!icodec ||
2179                     codec->width   != icodec->width  ||
2180                     codec->height  != icodec->height ||
2181                     codec->pix_fmt != icodec->pix_fmt) {
2182                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2183                 }
2184
2185                 if (ost->forced_keyframes)
2186                     parse_forced_key_frames(ost->forced_keyframes, ost,
2187                                             ost->st->codec);
2188                 break;
2189             case AVMEDIA_TYPE_SUBTITLE:
2190                 codec->time_base = (AVRational){1, 1000};
2191                 if (!codec->width) {
2192                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2193                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2194                 }
2195                 break;
2196             default:
2197                 abort();
2198                 break;
2199             }
2200             /* two pass mode */
2201             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2202                 char logfilename[1024];
2203                 FILE *f;
2204
2205                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2206                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2207                          i);
2208                 if (!strcmp(ost->enc->name, "libx264")) {
2209                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2210                 } else {
2211                     if (codec->flags & CODEC_FLAG_PASS2) {
2212                         char  *logbuffer;
2213                         size_t logbuffer_size;
2214                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2215                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2216                                    logfilename);
2217                             exit_program(1);
2218                         }
2219                         codec->stats_in = logbuffer;
2220                     }
2221                     if (codec->flags & CODEC_FLAG_PASS1) {
2222                         f = fopen(logfilename, "wb");
2223                         if (!f) {
2224                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2225                                 logfilename, strerror(errno));
2226                             exit_program(1);
2227                         }
2228                         ost->logfile = f;
2229                     }
2230                 }
2231             }
2232         }
2233     }
2234
2235     /* open each encoder */
2236     for (i = 0; i < nb_output_streams; i++) {
2237         ost = output_streams[i];
2238         if (ost->encoding_needed) {
2239             AVCodec      *codec = ost->enc;
2240             AVCodecContext *dec = NULL;
2241
2242             if ((ist = get_input_stream(ost)))
2243                 dec = ist->st->codec;
2244             if (dec && dec->subtitle_header) {
2245                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2246                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2247                 if (!ost->st->codec->subtitle_header) {
2248                     ret = AVERROR(ENOMEM);
2249                     goto dump_format;
2250                 }
2251                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2252                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2253             }
2254             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2255                 av_dict_set(&ost->opts, "threads", "auto", 0);
2256             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2257                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2258                         ost->file_index, ost->index);
2259                 ret = AVERROR(EINVAL);
2260                 goto dump_format;
2261             }
2262             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2263                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2264                 av_buffersink_set_frame_size(ost->filter->filter,
2265                                              ost->st->codec->frame_size);
2266             assert_codec_experimental(ost->st->codec, 1);
2267             assert_avoptions(ost->opts);
2268             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2269                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2270                                              " It takes bits/s as argument, not kbits/s\n");
2271             extra_size += ost->st->codec->extradata_size;
2272
2273             if (ost->st->codec->me_threshold)
2274                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2275         }
2276     }
2277
2278     /* init input streams */
2279     for (i = 0; i < nb_input_streams; i++)
2280         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2281             goto dump_format;
2282
2283     /* discard unused programs */
2284     for (i = 0; i < nb_input_files; i++) {
2285         InputFile *ifile = input_files[i];
2286         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2287             AVProgram *p = ifile->ctx->programs[j];
2288             int discard  = AVDISCARD_ALL;
2289
2290             for (k = 0; k < p->nb_stream_indexes; k++)
2291                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2292                     discard = AVDISCARD_DEFAULT;
2293                     break;
2294                 }
2295             p->discard = discard;
2296         }
2297     }
2298
2299     /* open files and write file headers */
2300     for (i = 0; i < nb_output_files; i++) {
2301         oc = output_files[i]->ctx;
2302         oc->interrupt_callback = int_cb;
2303         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2304             char errbuf[128];
2305             const char *errbuf_ptr = errbuf;
2306             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2307                 errbuf_ptr = strerror(AVUNERROR(ret));
2308             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2309             ret = AVERROR(EINVAL);
2310             goto dump_format;
2311         }
2312 //         assert_avoptions(output_files[i]->opts);
2313         if (strcmp(oc->oformat->name, "rtp")) {
2314             want_sdp = 0;
2315         }
2316     }
2317
2318  dump_format:
2319     /* dump the file output parameters - cannot be done before in case
2320        of stream copy */
2321     for (i = 0; i < nb_output_files; i++) {
2322         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2323     }
2324
2325     /* dump the stream mapping */
2326     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2327     for (i = 0; i < nb_input_streams; i++) {
2328         ist = input_streams[i];
2329
2330         for (j = 0; j < ist->nb_filters; j++) {
2331             if (ist->filters[j]->graph->graph_desc) {
2332                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2333                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2334                        ist->filters[j]->name);
2335                 if (nb_filtergraphs > 1)
2336                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2337                 av_log(NULL, AV_LOG_INFO, "\n");
2338             }
2339         }
2340     }
2341
2342     for (i = 0; i < nb_output_streams; i++) {
2343         ost = output_streams[i];
2344
2345         if (ost->attachment_filename) {
2346             /* an attached file */
2347             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2348                    ost->attachment_filename, ost->file_index, ost->index);
2349             continue;
2350         }
2351
2352         if (ost->filter && ost->filter->graph->graph_desc) {
2353             /* output from a complex graph */
2354             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2355             if (nb_filtergraphs > 1)
2356                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2357
2358             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2359                    ost->index, ost->enc ? ost->enc->name : "?");
2360             continue;
2361         }
2362
2363         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2364                input_streams[ost->source_index]->file_index,
2365                input_streams[ost->source_index]->st->index,
2366                ost->file_index,
2367                ost->index);
2368         if (ost->sync_ist != input_streams[ost->source_index])
2369             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2370                    ost->sync_ist->file_index,
2371                    ost->sync_ist->st->index);
2372         if (ost->stream_copy)
2373             av_log(NULL, AV_LOG_INFO, " (copy)");
2374         else
2375             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2376                    input_streams[ost->source_index]->dec->name : "?",
2377                    ost->enc ? ost->enc->name : "?");
2378         av_log(NULL, AV_LOG_INFO, "\n");
2379     }
2380
2381     if (ret) {
2382         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2383         return ret;
2384     }
2385
2386     if (want_sdp) {
2387         print_sdp();
2388     }
2389
2390     return 0;
2391 }
2392
2393 /**
2394  * @return 1 if there are still streams where more output is wanted,
2395  *         0 otherwise
2396  */
2397 static int need_output(void)
2398 {
2399     int i;
2400
2401     for (i = 0; i < nb_output_streams; i++) {
2402         OutputStream *ost    = output_streams[i];
2403         OutputFile *of       = output_files[ost->file_index];
2404         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2405
2406         if (ost->finished ||
2407             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2408             continue;
2409         if (ost->frame_number >= ost->max_frames) {
2410             int j;
2411             for (j = 0; j < of->ctx->nb_streams; j++)
2412                 output_streams[of->ost_index + j]->finished = 1;
2413             continue;
2414         }
2415
2416         return 1;
2417     }
2418
2419     return 0;
2420 }
2421
2422 static int input_acceptable(InputStream *ist)
2423 {
2424     av_assert1(!ist->discard);
2425     return !input_files[ist->file_index]->eagain &&
2426            !input_files[ist->file_index]->eof_reached;
2427 }
2428
2429 static int find_graph_input(FilterGraph *graph)
2430 {
2431     int i, nb_req_max = 0, file_index = -1;
2432
2433     for (i = 0; i < graph->nb_inputs; i++) {
2434         int nb_req = av_buffersrc_get_nb_failed_requests(graph->inputs[i]->filter);
2435         if (nb_req > nb_req_max) {
2436             InputStream *ist = graph->inputs[i]->ist;
2437             if (input_acceptable(ist)) {
2438                 nb_req_max = nb_req;
2439                 file_index = ist->file_index;
2440             }
2441         }
2442     }
2443
2444     return file_index;
2445 }
2446
2447 /**
2448  * Select the input file to read from.
2449  *
2450  * @return  >=0 index of the input file to use;
2451  *          -1  if no file is acceptable;
2452  *          -2  to read from filters without reading from a file
2453  */
2454 static int select_input_file(void)
2455 {
2456     int i, ret, nb_active_out = nb_output_streams, ost_index = -1;
2457     int64_t opts_min;
2458     OutputStream *ost;
2459     AVFilterBufferRef *dummy;
2460
2461     for (i = 0; i < nb_output_streams; i++)
2462         nb_active_out -= output_streams[i]->unavailable =
2463             output_streams[i]->finished;
2464     while (nb_active_out) {
2465         opts_min = INT64_MAX;
2466         ost_index = -1;
2467         for (i = 0; i < nb_output_streams; i++) {
2468             OutputStream *ost = output_streams[i];
2469             int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2470                                         AV_TIME_BASE_Q);
2471             if (!ost->unavailable && opts < opts_min) {
2472                 opts_min  = opts;
2473                 ost_index = i;
2474             }
2475         }
2476         if (ost_index < 0)
2477             return -1;
2478
2479         ost = output_streams[ost_index];
2480         if (ost->source_index >= 0) {
2481             /* ost is directly connected to an input */
2482             InputStream *ist = input_streams[ost->source_index];
2483             if (input_acceptable(ist))
2484                 return ist->file_index;
2485         } else {
2486             /* ost is connected to a complex filtergraph */
2487             av_assert1(ost->filter);
2488             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &dummy,
2489                                                AV_BUFFERSINK_FLAG_PEEK);
2490             if (ret >= 0)
2491                 return -2;
2492             ret = find_graph_input(ost->filter->graph);
2493             if (ret >= 0)
2494                 return ret;
2495         }
2496         ost->unavailable = 1;
2497         nb_active_out--;
2498     }
2499     return -1;
2500 }
2501
2502 static int check_keyboard_interaction(int64_t cur_time)
2503 {
2504     int i, ret, key;
2505     static int64_t last_time;
2506     if (received_nb_signals)
2507         return AVERROR_EXIT;
2508     /* read_key() returns 0 on EOF */
2509     if(cur_time - last_time >= 100000 && !run_as_daemon){
2510         key =  read_key();
2511         last_time = cur_time;
2512     }else
2513         key = -1;
2514     if (key == 'q')
2515         return AVERROR_EXIT;
2516     if (key == '+') av_log_set_level(av_log_get_level()+10);
2517     if (key == '-') av_log_set_level(av_log_get_level()-10);
2518     if (key == 's') qp_hist     ^= 1;
2519     if (key == 'h'){
2520         if (do_hex_dump){
2521             do_hex_dump = do_pkt_dump = 0;
2522         } else if(do_pkt_dump){
2523             do_hex_dump = 1;
2524         } else
2525             do_pkt_dump = 1;
2526         av_log_set_level(AV_LOG_DEBUG);
2527     }
2528     if (key == 'c' || key == 'C'){
2529         char buf[4096], target[64], command[256], arg[256] = {0};
2530         double time;
2531         int k, n = 0;
2532         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2533         i = 0;
2534         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2535             if (k > 0)
2536                 buf[i++] = k;
2537         buf[i] = 0;
2538         if (k > 0 &&
2539             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2540             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2541                    target, time, command, arg);
2542             for (i = 0; i < nb_filtergraphs; i++) {
2543                 FilterGraph *fg = filtergraphs[i];
2544                 if (fg->graph) {
2545                     if (time < 0) {
2546                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2547                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2548                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2549                     } else {
2550                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2551                     }
2552                 }
2553             }
2554         } else {
2555             av_log(NULL, AV_LOG_ERROR,
2556                    "Parse error, at least 3 arguments were expected, "
2557                    "only %d given in string '%s'\n", n, buf);
2558         }
2559     }
2560     if (key == 'd' || key == 'D'){
2561         int debug=0;
2562         if(key == 'D') {
2563             debug = input_streams[0]->st->codec->debug<<1;
2564             if(!debug) debug = 1;
2565             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2566                 debug += debug;
2567         }else
2568             if(scanf("%d", &debug)!=1)
2569                 fprintf(stderr,"error parsing debug value\n");
2570         for(i=0;i<nb_input_streams;i++) {
2571             input_streams[i]->st->codec->debug = debug;
2572         }
2573         for(i=0;i<nb_output_streams;i++) {
2574             OutputStream *ost = output_streams[i];
2575             ost->st->codec->debug = debug;
2576         }
2577         if(debug) av_log_set_level(AV_LOG_DEBUG);
2578         fprintf(stderr,"debug=%d\n", debug);
2579     }
2580     if (key == '?'){
2581         fprintf(stderr, "key    function\n"
2582                         "?      show this help\n"
2583                         "+      increase verbosity\n"
2584                         "-      decrease verbosity\n"
2585                         "c      Send command to filtergraph\n"
2586                         "D      cycle through available debug modes\n"
2587                         "h      dump packets/hex press to cycle through the 3 states\n"
2588                         "q      quit\n"
2589                         "s      Show QP histogram\n"
2590         );
2591     }
2592     return 0;
2593 }
2594
2595 #if HAVE_PTHREADS
2596 static void *input_thread(void *arg)
2597 {
2598     InputFile *f = arg;
2599     int ret = 0;
2600
2601     while (!transcoding_finished && ret >= 0) {
2602         AVPacket pkt;
2603         ret = av_read_frame(f->ctx, &pkt);
2604
2605         if (ret == AVERROR(EAGAIN)) {
2606             av_usleep(10000);
2607             ret = 0;
2608             continue;
2609         } else if (ret < 0)
2610             break;
2611
2612         pthread_mutex_lock(&f->fifo_lock);
2613         while (!av_fifo_space(f->fifo))
2614             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2615
2616         av_dup_packet(&pkt);
2617         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2618
2619         pthread_mutex_unlock(&f->fifo_lock);
2620     }
2621
2622     f->finished = 1;
2623     return NULL;
2624 }
2625
2626 static void free_input_threads(void)
2627 {
2628     int i;
2629
2630     if (nb_input_files == 1)
2631         return;
2632
2633     transcoding_finished = 1;
2634
2635     for (i = 0; i < nb_input_files; i++) {
2636         InputFile *f = input_files[i];
2637         AVPacket pkt;
2638
2639         if (!f->fifo || f->joined)
2640             continue;
2641
2642         pthread_mutex_lock(&f->fifo_lock);
2643         while (av_fifo_size(f->fifo)) {
2644             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2645             av_free_packet(&pkt);
2646         }
2647         pthread_cond_signal(&f->fifo_cond);
2648         pthread_mutex_unlock(&f->fifo_lock);
2649
2650         pthread_join(f->thread, NULL);
2651         f->joined = 1;
2652
2653         while (av_fifo_size(f->fifo)) {
2654             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2655             av_free_packet(&pkt);
2656         }
2657         av_fifo_free(f->fifo);
2658     }
2659 }
2660
2661 static int init_input_threads(void)
2662 {
2663     int i, ret;
2664
2665     if (nb_input_files == 1)
2666         return 0;
2667
2668     for (i = 0; i < nb_input_files; i++) {
2669         InputFile *f = input_files[i];
2670
2671         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2672             return AVERROR(ENOMEM);
2673
2674         pthread_mutex_init(&f->fifo_lock, NULL);
2675         pthread_cond_init (&f->fifo_cond, NULL);
2676
2677         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2678             return AVERROR(ret);
2679     }
2680     return 0;
2681 }
2682
2683 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2684 {
2685     int ret = 0;
2686
2687     pthread_mutex_lock(&f->fifo_lock);
2688
2689     if (av_fifo_size(f->fifo)) {
2690         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2691         pthread_cond_signal(&f->fifo_cond);
2692     } else {
2693         if (f->finished)
2694             ret = AVERROR_EOF;
2695         else
2696             ret = AVERROR(EAGAIN);
2697     }
2698
2699     pthread_mutex_unlock(&f->fifo_lock);
2700
2701     return ret;
2702 }
2703 #endif
2704
2705 static int get_input_packet(InputFile *f, AVPacket *pkt)
2706 {
2707 #if HAVE_PTHREADS
2708     if (nb_input_files > 1)
2709         return get_input_packet_mt(f, pkt);
2710 #endif
2711     return av_read_frame(f->ctx, pkt);
2712 }
2713
2714 static int got_eagain(void)
2715 {
2716     int i;
2717     for (i = 0; i < nb_input_files; i++)
2718         if (input_files[i]->eagain)
2719             return 1;
2720     return 0;
2721 }
2722
2723 static void reset_eagain(void)
2724 {
2725     int i;
2726     for (i = 0; i < nb_input_files; i++)
2727         input_files[i]->eagain = 0;
2728 }
2729
2730 /**
2731  * @return
2732  * - 0 -- one packet was read and processed
2733  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2734  *   this function should be called again
2735  * - AVERROR_EOF -- this function should not be called again
2736  */
2737 static int process_input(void)
2738 {
2739     InputFile *ifile;
2740     AVFormatContext *is;
2741     InputStream *ist;
2742     AVPacket pkt;
2743     int ret, i, j;
2744     int file_index;
2745
2746     /* select the stream that we must read now */
2747     file_index = select_input_file();
2748     /* if none, if is finished */
2749     if (file_index == -2) {
2750         poll_filters() ;
2751         return AVERROR(EAGAIN);
2752     }
2753     if (file_index < 0) {
2754         if (got_eagain()) {
2755             reset_eagain();
2756             av_usleep(10000);
2757             return AVERROR(EAGAIN);
2758         }
2759         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2760         return AVERROR_EOF;
2761     }
2762     ifile = input_files[file_index];
2763
2764     is  = ifile->ctx;
2765     ret = get_input_packet(ifile, &pkt);
2766
2767     if (ret == AVERROR(EAGAIN)) {
2768         ifile->eagain = 1;
2769         return ret;
2770     }
2771     if (ret < 0) {
2772         if (ret != AVERROR_EOF) {
2773             print_error(is->filename, ret);
2774             if (exit_on_error)
2775                 exit_program(1);
2776         }
2777         ifile->eof_reached = 1;
2778
2779         for (i = 0; i < ifile->nb_streams; i++) {
2780             ist = input_streams[ifile->ist_index + i];
2781             if (ist->decoding_needed)
2782                 output_packet(ist, NULL);
2783             poll_filters();
2784         }
2785
2786         for (i = 0; i < nb_output_streams; i++) {
2787             OutputStream *ost    = output_streams[i];
2788             OutputFile *of       = output_files[ost->file_index];
2789             AVFormatContext *os  = output_files[ost->file_index]->ctx;
2790
2791             if (of->shortest) {
2792                 int j;
2793                 for (j = 0; j < of->ctx->nb_streams; j++)
2794                     output_streams[of->ost_index + j]->finished = 1;
2795                 continue;
2796             }
2797         }
2798
2799         return AVERROR(EAGAIN);
2800     }
2801
2802     reset_eagain();
2803
2804     if (do_pkt_dump) {
2805         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2806                          is->streams[pkt.stream_index]);
2807     }
2808     /* the following test is needed in case new streams appear
2809        dynamically in stream : we ignore them */
2810     if (pkt.stream_index >= ifile->nb_streams) {
2811         report_new_stream(file_index, &pkt);
2812         goto discard_packet;
2813     }
2814
2815     ist = input_streams[ifile->ist_index + pkt.stream_index];
2816     if (ist->discard)
2817         goto discard_packet;
2818
2819     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2820         uint64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2821         uint64_t stime2= stime + (1LL<<ist->st->pts_wrap_bits);
2822         ist->wrap_correction_done = 1;
2823         if(pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime && pkt.dts - stime > stime2 - pkt.dts) {
2824             pkt.dts -= 1LL<<ist->st->pts_wrap_bits;
2825             ist->wrap_correction_done = 0;
2826         }
2827         if(pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime && pkt.pts - stime > stime2 - pkt.pts) {
2828             pkt.pts -= 1LL<<ist->st->pts_wrap_bits;
2829             ist->wrap_correction_done = 0;
2830         }
2831     }
2832
2833     if (pkt.dts != AV_NOPTS_VALUE)
2834         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2835     if (pkt.pts != AV_NOPTS_VALUE)
2836         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2837
2838     if (pkt.pts != AV_NOPTS_VALUE)
2839         pkt.pts *= ist->ts_scale;
2840     if (pkt.dts != AV_NOPTS_VALUE)
2841         pkt.dts *= ist->ts_scale;
2842
2843     if (debug_ts) {
2844         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2845                 "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s  pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%"PRId64"\n",
2846                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2847                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2848                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2849                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2850                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2851                 input_files[ist->file_index]->ts_offset);
2852     }
2853
2854     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2855         !copy_ts) {
2856         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2857         int64_t delta   = pkt_dts - ist->next_dts;
2858         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2859         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2860             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2861                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2862             pkt_dts+1<ist->pts){
2863             ifile->ts_offset -= delta;
2864             av_log(NULL, AV_LOG_DEBUG,
2865                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2866                    delta, ifile->ts_offset);
2867             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2868             if (pkt.pts != AV_NOPTS_VALUE)
2869                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2870         }
2871         } else {
2872             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2873                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2874                ) {
2875                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2876                 pkt.dts = AV_NOPTS_VALUE;
2877             }
2878             if (pkt.pts != AV_NOPTS_VALUE){
2879                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2880                 delta   = pkt_pts - ist->next_dts;
2881                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2882                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2883                    ) {
2884                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2885                     pkt.pts = AV_NOPTS_VALUE;
2886                 }
2887             }
2888         }
2889     }
2890
2891     sub2video_heartbeat(ist, pkt.pts);
2892
2893     if ((ret = output_packet(ist, &pkt)) < 0 ||
2894         ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
2895         char buf[128];
2896         av_strerror(ret, buf, sizeof(buf));
2897         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2898                 ist->file_index, ist->st->index, buf);
2899         if (exit_on_error)
2900             exit_program(1);
2901         av_free_packet(&pkt);
2902         return AVERROR(EAGAIN);
2903     }
2904
2905 discard_packet:
2906     av_free_packet(&pkt);
2907
2908     return 0;
2909 }
2910
2911 /*
2912  * The following code is the main loop of the file converter
2913  */
2914 static int transcode(void)
2915 {
2916     int ret, i;
2917     AVFormatContext *os;
2918     OutputStream *ost;
2919     InputStream *ist;
2920     int64_t timer_start;
2921
2922     ret = transcode_init();
2923     if (ret < 0)
2924         goto fail;
2925
2926     if (stdin_interaction) {
2927         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2928     }
2929
2930     timer_start = av_gettime();
2931
2932 #if HAVE_PTHREADS
2933     if ((ret = init_input_threads()) < 0)
2934         goto fail;
2935 #endif
2936
2937     while (!received_sigterm) {
2938         int64_t cur_time= av_gettime();
2939
2940         /* if 'q' pressed, exits */
2941         if (stdin_interaction)
2942             if (check_keyboard_interaction(cur_time) < 0)
2943                 break;
2944
2945         /* check if there's any stream where output is still needed */
2946         if (!need_output()) {
2947             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2948             break;
2949         }
2950
2951         ret = process_input();
2952         if (ret < 0) {
2953             if (ret == AVERROR(EAGAIN))
2954                 continue;
2955             if (ret == AVERROR_EOF)
2956                 break;
2957             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2958             break;
2959         }
2960
2961         /* dump report by using the output first video and audio streams */
2962         print_report(0, timer_start, cur_time);
2963     }
2964 #if HAVE_PTHREADS
2965     free_input_threads();
2966 #endif
2967
2968     /* at the end of stream, we must flush the decoder buffers */
2969     for (i = 0; i < nb_input_streams; i++) {
2970         ist = input_streams[i];
2971         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2972             output_packet(ist, NULL);
2973         }
2974     }
2975     poll_filters();
2976     flush_encoders();
2977
2978     term_exit();
2979
2980     /* write the trailer if needed and close file */
2981     for (i = 0; i < nb_output_files; i++) {
2982         os = output_files[i]->ctx;
2983         av_write_trailer(os);
2984     }
2985
2986     /* dump report by using the first video and audio streams */
2987     print_report(1, timer_start, av_gettime());
2988
2989     /* close each encoder */
2990     for (i = 0; i < nb_output_streams; i++) {
2991         ost = output_streams[i];
2992         if (ost->encoding_needed) {
2993             av_freep(&ost->st->codec->stats_in);
2994             avcodec_close(ost->st->codec);
2995         }
2996     }
2997
2998     /* close each decoder */
2999     for (i = 0; i < nb_input_streams; i++) {
3000         ist = input_streams[i];
3001         if (ist->decoding_needed) {
3002             avcodec_close(ist->st->codec);
3003         }
3004     }
3005
3006     /* finished ! */
3007     ret = 0;
3008
3009  fail:
3010 #if HAVE_PTHREADS
3011     free_input_threads();
3012 #endif
3013
3014     if (output_streams) {
3015         for (i = 0; i < nb_output_streams; i++) {
3016             ost = output_streams[i];
3017             if (ost) {
3018                 if (ost->stream_copy)
3019                     av_freep(&ost->st->codec->extradata);
3020                 if (ost->logfile) {
3021                     fclose(ost->logfile);
3022                     ost->logfile = NULL;
3023                 }
3024                 av_freep(&ost->st->codec->subtitle_header);
3025                 av_free(ost->forced_kf_pts);
3026                 av_dict_free(&ost->opts);
3027             }
3028         }
3029     }
3030     return ret;
3031 }
3032
3033
3034 static int64_t getutime(void)
3035 {
3036 #if HAVE_GETRUSAGE
3037     struct rusage rusage;
3038
3039     getrusage(RUSAGE_SELF, &rusage);
3040     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3041 #elif HAVE_GETPROCESSTIMES
3042     HANDLE proc;
3043     FILETIME c, e, k, u;
3044     proc = GetCurrentProcess();
3045     GetProcessTimes(proc, &c, &e, &k, &u);
3046     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3047 #else
3048     return av_gettime();
3049 #endif
3050 }
3051
3052 static int64_t getmaxrss(void)
3053 {
3054 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3055     struct rusage rusage;
3056     getrusage(RUSAGE_SELF, &rusage);
3057     return (int64_t)rusage.ru_maxrss * 1024;
3058 #elif HAVE_GETPROCESSMEMORYINFO
3059     HANDLE proc;
3060     PROCESS_MEMORY_COUNTERS memcounters;
3061     proc = GetCurrentProcess();
3062     memcounters.cb = sizeof(memcounters);
3063     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3064     return memcounters.PeakPagefileUsage;
3065 #else
3066     return 0;
3067 #endif
3068 }
3069
3070 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3071 {
3072 }
3073
3074 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3075 {
3076     int idx = locate_option(argc, argv, options, "cpuflags");
3077     if (idx && argv[idx + 1])
3078         opt_cpuflags("cpuflags", argv[idx + 1]);
3079 }
3080
3081 int main(int argc, char **argv)
3082 {
3083     OptionsContext o = { 0 };
3084     int64_t ti;
3085
3086     reset_options(&o, 0);
3087
3088     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3089     parse_loglevel(argc, argv, options);
3090
3091     if(argc>1 && !strcmp(argv[1], "-d")){
3092         run_as_daemon=1;
3093         av_log_set_callback(log_callback_null);
3094         argc--;
3095         argv++;
3096     }
3097
3098     avcodec_register_all();
3099 #if CONFIG_AVDEVICE
3100     avdevice_register_all();
3101 #endif
3102     avfilter_register_all();
3103     av_register_all();
3104     avformat_network_init();
3105
3106     show_banner(argc, argv, options);
3107
3108     term_init();
3109
3110     parse_cpuflags(argc, argv, options);
3111
3112     /* parse options */
3113     parse_options(&o, argc, argv, options, opt_output_file);
3114
3115     if (nb_output_files <= 0 && nb_input_files == 0) {
3116         show_usage();
3117         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3118         exit_program(1);
3119     }
3120
3121     /* file converter / grab */
3122     if (nb_output_files <= 0) {
3123         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3124         exit_program(1);
3125     }
3126
3127 //     if (nb_input_files == 0) {
3128 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3129 //         exit_program(1);
3130 //     }
3131
3132     current_time = ti = getutime();
3133     if (transcode() < 0)
3134         exit_program(1);
3135     ti = getutime() - ti;
3136     if (do_benchmark) {
3137         int maxrss = getmaxrss() / 1024;
3138         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3139     }
3140
3141     exit_program(0);
3142     return 0;
3143 }