FFmpeg: ffmpeg.c Source File

00001 /*
00002  * FFmpeg main
00003  * Copyright (c) 2000-2003 Fabrice Bellard
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 /* needed for usleep() */
00023 #define _XOPEN_SOURCE 600
00024 
00025 #include "config.h"
00026 #include <ctype.h>
00027 #include <string.h>
00028 #include <math.h>
00029 #include <stdlib.h>
00030 #include <errno.h>
00031 #include <signal.h>
00032 #include <limits.h>
00033 #include <unistd.h>
00034 #include "libavformat/avformat.h"
00035 #include "libavdevice/avdevice.h"
00036 #include "libswscale/swscale.h"
00037 #include "libavcodec/opt.h"
00038 #include "libavcodec/audioconvert.h"
00039 #include "libavutil/audioconvert.h"
00040 #include "libavutil/parseutils.h"
00041 #include "libavutil/samplefmt.h"
00042 #include "libavutil/colorspace.h"
00043 #include "libavutil/fifo.h"
00044 #include "libavutil/intreadwrite.h"
00045 #include "libavutil/pixdesc.h"
00046 #include "libavutil/avstring.h"
00047 #include "libavutil/libm.h"
00048 #include "libavformat/os_support.h"
00049 
00050 #if CONFIG_AVFILTER
00051 # include "libavfilter/avfilter.h"
00052 # include "libavfilter/avfiltergraph.h"
00053 # include "libavfilter/vsrc_buffer.h"
00054 #endif
00055 
00056 #if HAVE_SYS_RESOURCE_H
00057 #include <sys/types.h>
00058 #include <sys/time.h>
00059 #include <sys/resource.h>
00060 #elif HAVE_GETPROCESSTIMES
00061 #include <windows.h>
00062 #endif
00063 #if HAVE_GETPROCESSMEMORYINFO
00064 #include <windows.h>
00065 #include <psapi.h>
00066 #endif
00067 
00068 #if HAVE_SYS_SELECT_H
00069 #include <sys/select.h>
00070 #endif
00071 
00072 #if HAVE_TERMIOS_H
00073 #include <fcntl.h>
00074 #include <sys/ioctl.h>
00075 #include <sys/time.h>
00076 #include <termios.h>
00077 #elif HAVE_CONIO_H
00078 #include <conio.h>
00079 #endif
00080 #include <time.h>
00081 
00082 #include "cmdutils.h"
00083 
00084 #include "libavutil/avassert.h"
00085 
00086 const char program_name[] = "FFmpeg";
00087 const int program_birth_year = 2000;
00088 
00089 /* select an input stream for an output stream */
00090 typedef struct AVStreamMap {
00091     int file_index;
00092     int stream_index;
00093     int sync_file_index;
00094     int sync_stream_index;
00095 } AVStreamMap;
00096 
00100 typedef struct AVMetaDataMap {
00101     int  file;      //< file index
00102     char type;      //< type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
00103     int  index;     //< stream/chapter/program number
00104 } AVMetaDataMap;
00105 
00106 typedef struct AVChapterMap {
00107     int in_file;
00108     int out_file;
00109 } AVChapterMap;
00110 
00111 static const OptionDef options[];
00112 
00113 #define MAX_FILES 100
00114 #if !FF_API_MAX_STREAMS
00115 #define MAX_STREAMS 1024    /* arbitrary sanity check value */
00116 #endif
00117 
00118 static const char *last_asked_format = NULL;
00119 static AVFormatContext *input_files[MAX_FILES];
00120 static int64_t input_files_ts_offset[MAX_FILES];
00121 static double *input_files_ts_scale[MAX_FILES] = {NULL};
00122 static AVCodec **input_codecs = NULL;
00123 static int nb_input_files = 0;
00124 static int nb_input_codecs = 0;
00125 static int nb_input_files_ts_scale[MAX_FILES] = {0};
00126 
00127 static AVFormatContext *output_files[MAX_FILES];
00128 static AVCodec **output_codecs = NULL;
00129 static int nb_output_files = 0;
00130 static int nb_output_codecs = 0;
00131 
00132 static AVStreamMap *stream_maps = NULL;
00133 static int nb_stream_maps;
00134 
00135 /* first item specifies output metadata, second is input */
00136 static AVMetaDataMap (*meta_data_maps)[2] = NULL;
00137 static int nb_meta_data_maps;
00138 static int metadata_global_autocopy   = 1;
00139 static int metadata_streams_autocopy  = 1;
00140 static int metadata_chapters_autocopy = 1;
00141 
00142 static AVChapterMap *chapter_maps = NULL;
00143 static int nb_chapter_maps;
00144 
00145 /* indexed by output file stream index */
00146 static int *streamid_map = NULL;
00147 static int nb_streamid_map = 0;
00148 
00149 static int frame_width  = 0;
00150 static int frame_height = 0;
00151 static float frame_aspect_ratio = 0;
00152 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
00153 static enum AVSampleFormat audio_sample_fmt = AV_SAMPLE_FMT_NONE;
00154 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
00155 static AVRational frame_rate;
00156 static float video_qscale = 0;
00157 static uint16_t *intra_matrix = NULL;
00158 static uint16_t *inter_matrix = NULL;
00159 static const char *video_rc_override_string=NULL;
00160 static int video_disable = 0;
00161 static int video_discard = 0;
00162 static char *video_codec_name = NULL;
00163 static unsigned int video_codec_tag = 0;
00164 static char *video_language = NULL;
00165 static int same_quality = 0;
00166 static int do_deinterlace = 0;
00167 static int top_field_first = -1;
00168 static int me_threshold = 0;
00169 static int intra_dc_precision = 8;
00170 static int loop_input = 0;
00171 static int loop_output = AVFMT_NOOUTPUTLOOP;
00172 static int qp_hist = 0;
00173 #if CONFIG_AVFILTER
00174 static char *vfilters = NULL;
00175 #endif
00176 
00177 static int intra_only = 0;
00178 static int audio_sample_rate = 44100;
00179 static int64_t channel_layout = 0;
00180 #define QSCALE_NONE -99999
00181 static float audio_qscale = QSCALE_NONE;
00182 static int audio_disable = 0;
00183 static int audio_channels = 1;
00184 static char  *audio_codec_name = NULL;
00185 static unsigned int audio_codec_tag = 0;
00186 static char *audio_language = NULL;
00187 
00188 static int subtitle_disable = 0;
00189 static char *subtitle_codec_name = NULL;
00190 static char *subtitle_language = NULL;
00191 static unsigned int subtitle_codec_tag = 0;
00192 
00193 static float mux_preload= 0.5;
00194 static float mux_max_delay= 0.7;
00195 
00196 static int64_t recording_time = INT64_MAX;
00197 static int64_t start_time = 0;
00198 static int64_t recording_timestamp = 0;
00199 static int64_t input_ts_offset = 0;
00200 static int file_overwrite = 0;
00201 static AVMetadata *metadata;
00202 static int do_benchmark = 0;
00203 static int do_hex_dump = 0;
00204 static int do_pkt_dump = 0;
00205 static int do_psnr = 0;
00206 static int do_pass = 0;
00207 static char *pass_logfilename_prefix = NULL;
00208 static int audio_stream_copy = 0;
00209 static int video_stream_copy = 0;
00210 static int subtitle_stream_copy = 0;
00211 static int video_sync_method= -1;
00212 static int audio_sync_method= 0;
00213 static float audio_drift_threshold= 0.1;
00214 static int copy_ts= 0;
00215 static int copy_tb;
00216 static int opt_shortest = 0;
00217 static int video_global_header = 0;
00218 static char *vstats_filename;
00219 static FILE *vstats_file;
00220 static int opt_programid = 0;
00221 static int copy_initial_nonkeyframes = 0;
00222 
00223 static int rate_emu = 0;
00224 
00225 static int  video_channel = 0;
00226 static char *video_standard;
00227 
00228 static int audio_volume = 256;
00229 
00230 static int exit_on_error = 0;
00231 static int using_stdin = 0;
00232 static int verbose = 1;
00233 static int thread_count= 1;
00234 static int q_pressed = 0;
00235 static int64_t video_size = 0;
00236 static int64_t audio_size = 0;
00237 static int64_t extra_size = 0;
00238 static int nb_frames_dup = 0;
00239 static int nb_frames_drop = 0;
00240 static int input_sync;
00241 static uint64_t limit_filesize = 0;
00242 static int force_fps = 0;
00243 static char *forced_key_frames = NULL;
00244 
00245 static float dts_delta_threshold = 10;
00246 
00247 static unsigned int sws_flags = SWS_BICUBIC;
00248 
00249 static int64_t timer_start;
00250 
00251 static uint8_t *audio_buf;
00252 static uint8_t *audio_out;
00253 static unsigned int allocated_audio_out_size, allocated_audio_buf_size;
00254 
00255 static short *samples;
00256 
00257 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
00258 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
00259 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
00260 
00261 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
00262 
00263 struct AVInputStream;
00264 
00265 typedef struct AVOutputStream {
00266     int file_index;          /* file index */
00267     int index;               /* stream index in the output file */
00268     int source_index;        /* AVInputStream index */
00269     AVStream *st;            /* stream in the output file */
00270     int encoding_needed;     /* true if encoding needed for this stream */
00271     int frame_number;
00272     /* input pts and corresponding output pts
00273        for A/V sync */
00274     //double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
00275     struct AVInputStream *sync_ist; /* input stream to sync against */
00276     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
00277     AVBitStreamFilterContext *bitstream_filters;
00278     /* video only */
00279     int video_resample;
00280     AVFrame pict_tmp;      /* temporary image for resampling */
00281     struct SwsContext *img_resample_ctx; /* for image resampling */
00282     int resample_height;
00283     int resample_width;
00284     int resample_pix_fmt;
00285 
00286     /* full frame size of first frame */
00287     int original_height;
00288     int original_width;
00289 
00290     /* forced key frames */
00291     int64_t *forced_kf_pts;
00292     int forced_kf_count;
00293     int forced_kf_index;
00294 
00295     /* audio only */
00296     int audio_resample;
00297     ReSampleContext *resample; /* for audio resampling */
00298     int resample_sample_fmt;
00299     int resample_channels;
00300     int resample_sample_rate;
00301     int reformat_pair;
00302     AVAudioConvert *reformat_ctx;
00303     AVFifoBuffer *fifo;     /* for compression: one audio fifo per codec */
00304     FILE *logfile;
00305 
00306 #if CONFIG_AVFILTER
00307     AVFilterContext *output_video_filter;
00308     AVFilterContext *input_video_filter;
00309     AVFilterBufferRef *picref;
00310     char *avfilter;
00311     AVFilterGraph *graph;
00312 #endif
00313 } AVOutputStream;
00314 
00315 static AVOutputStream **output_streams_for_file[MAX_FILES] = { NULL };
00316 static int nb_output_streams_for_file[MAX_FILES] = { 0 };
00317 
00318 typedef struct AVInputStream {
00319     int file_index;
00320     int index;
00321     AVStream *st;
00322     int discard;             /* true if stream data should be discarded */
00323     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
00324     int64_t sample_index;      /* current sample */
00325 
00326     int64_t       start;     /* time when read started */
00327     int64_t       next_pts;  /* synthetic pts for cases where pkt.pts
00328                                 is not defined */
00329     int64_t       pts;       /* current pts */
00330     int is_start;            /* is 1 at the start and after a discontinuity */
00331     int showed_multi_packet_warning;
00332     int is_past_recording_time;
00333 #if CONFIG_AVFILTER
00334     AVFrame *filter_frame;
00335     int has_filter_frame;
00336 #endif
00337 } AVInputStream;
00338 
00339 typedef struct AVInputFile {
00340     int eof_reached;      /* true if eof reached */
00341     int ist_index;        /* index of first stream in ist_table */
00342     int buffer_size;      /* current total buffer size */
00343     int nb_streams;       /* nb streams we are aware of */
00344 } AVInputFile;
00345 
00346 #if HAVE_TERMIOS_H
00347 
00348 /* init terminal so that we can grab keys */
00349 static struct termios oldtty;
00350 #endif
00351 
00352 #if CONFIG_AVFILTER
00353 
00354 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
00355 {
00356     AVFilterContext *last_filter, *filter;
00358     AVCodecContext *codec = ost->st->codec;
00359     AVCodecContext *icodec = ist->st->codec;
00360     FFSinkContext ffsink_ctx = { .pix_fmt = codec->pix_fmt };
00361     AVRational sample_aspect_ratio;
00362     char args[255];
00363     int ret;
00364 
00365     ost->graph = avfilter_graph_alloc();
00366 
00367     if (ist->st->sample_aspect_ratio.num){
00368         sample_aspect_ratio = ist->st->sample_aspect_ratio;
00369     }else
00370         sample_aspect_ratio = ist->st->codec->sample_aspect_ratio;
00371 
00372     snprintf(args, 255, "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
00373              ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
00374              sample_aspect_ratio.num, sample_aspect_ratio.den);
00375 
00376     ret = avfilter_graph_create_filter(&ost->input_video_filter, avfilter_get_by_name("buffer"),
00377                                        "src", args, NULL, ost->graph);
00378     if (ret < 0)
00379         return ret;
00380     ret = avfilter_graph_create_filter(&ost->output_video_filter, &ffsink,
00381                                        "out", NULL, &ffsink_ctx, ost->graph);
00382     if (ret < 0)
00383         return ret;
00384     last_filter = ost->input_video_filter;
00385 
00386     if (codec->width  != icodec->width || codec->height != icodec->height) {
00387         snprintf(args, 255, "%d:%d:flags=0x%X",
00388                  codec->width,
00389                  codec->height,
00390                  (int)av_get_int(sws_opts, "sws_flags", NULL));
00391         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
00392                                                 NULL, args, NULL, ost->graph)) < 0)
00393             return ret;
00394         if ((ret = avfilter_link(last_filter, 0, filter, 0)) < 0)
00395             return ret;
00396         last_filter = filter;
00397     }
00398 
00399     snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
00400     ost->graph->scale_sws_opts = av_strdup(args);
00401 
00402     if (ost->avfilter) {
00403         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
00404         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
00405 
00406         outputs->name    = av_strdup("in");
00407         outputs->filter_ctx = last_filter;
00408         outputs->pad_idx = 0;
00409         outputs->next    = NULL;
00410 
00411         inputs->name    = av_strdup("out");
00412         inputs->filter_ctx = ost->output_video_filter;
00413         inputs->pad_idx = 0;
00414         inputs->next    = NULL;
00415 
00416         if ((ret = avfilter_graph_parse(ost->graph, ost->avfilter, inputs, outputs, NULL)) < 0)
00417             return ret;
00418         av_freep(&ost->avfilter);
00419     } else {
00420         if ((ret = avfilter_link(last_filter, 0, ost->output_video_filter, 0)) < 0)
00421             return ret;
00422     }
00423 
00424     if ((ret = avfilter_graph_config(ost->graph, NULL)) < 0)
00425         return ret;
00426 
00427     codec->width  = ost->output_video_filter->inputs[0]->w;
00428     codec->height = ost->output_video_filter->inputs[0]->h;
00429     codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
00430         ost->output_video_filter->inputs[0]->sample_aspect_ratio;
00431 
00432     return 0;
00433 }
00434 #endif /* CONFIG_AVFILTER */
00435 
00436 static void term_exit(void)
00437 {
00438     av_log(NULL, AV_LOG_QUIET, "");
00439 #if HAVE_TERMIOS_H
00440     tcsetattr (0, TCSANOW, &oldtty);
00441 #endif
00442 }
00443 
00444 static volatile int received_sigterm = 0;
00445 
00446 static void
00447 sigterm_handler(int sig)
00448 {
00449     received_sigterm = sig;
00450     term_exit();
00451 }
00452 
00453 static void term_init(void)
00454 {
00455 #if HAVE_TERMIOS_H
00456     struct termios tty;
00457 
00458     tcgetattr (0, &tty);
00459     oldtty = tty;
00460     atexit(term_exit);
00461 
00462     tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
00463                           |INLCR|IGNCR|ICRNL|IXON);
00464     tty.c_oflag |= OPOST;
00465     tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
00466     tty.c_cflag &= ~(CSIZE|PARENB);
00467     tty.c_cflag |= CS8;
00468     tty.c_cc[VMIN] = 1;
00469     tty.c_cc[VTIME] = 0;
00470 
00471     tcsetattr (0, TCSANOW, &tty);
00472     signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
00473 #endif
00474 
00475     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).  */
00476     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
00477 #ifdef SIGXCPU
00478     signal(SIGXCPU, sigterm_handler);
00479 #endif
00480 }
00481 
00482 /* read a key without blocking */
00483 static int read_key(void)
00484 {
00485 #if HAVE_TERMIOS_H
00486     int n = 1;
00487     unsigned char ch;
00488     struct timeval tv;
00489     fd_set rfds;
00490 
00491     FD_ZERO(&rfds);
00492     FD_SET(0, &rfds);
00493     tv.tv_sec = 0;
00494     tv.tv_usec = 0;
00495     n = select(1, &rfds, NULL, NULL, &tv);
00496     if (n > 0) {
00497         n = read(0, &ch, 1);
00498         if (n == 1)
00499             return ch;
00500 
00501         return n;
00502     }
00503 #elif HAVE_CONIO_H
00504     if(kbhit())
00505         return(getch());
00506 #endif
00507     return -1;
00508 }
00509 
00510 static int decode_interrupt_cb(void)
00511 {
00512     q_pressed += read_key() == 'q';
00513     return q_pressed > 1;
00514 }
00515 
00516 static int ffmpeg_exit(int ret)
00517 {
00518     int i;
00519 
00520     /* close files */
00521     for(i=0;i<nb_output_files;i++) {
00522         AVFormatContext *s = output_files[i];
00523         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
00524             avio_close(s->pb);
00525         avformat_free_context(s);
00526         av_free(output_streams_for_file[i]);
00527     }
00528     for(i=0;i<nb_input_files;i++) {
00529         av_close_input_file(input_files[i]);
00530         av_free(input_files_ts_scale[i]);
00531     }
00532 
00533     av_free(intra_matrix);
00534     av_free(inter_matrix);
00535 
00536     if (vstats_file)
00537         fclose(vstats_file);
00538     av_free(vstats_filename);
00539 
00540     av_free(streamid_map);
00541     av_free(input_codecs);
00542     av_free(output_codecs);
00543     av_free(stream_maps);
00544     av_free(meta_data_maps);
00545 
00546     av_free(video_codec_name);
00547     av_free(audio_codec_name);
00548     av_free(subtitle_codec_name);
00549 
00550     av_free(video_standard);
00551 
00552     uninit_opts();
00553     av_free(audio_buf);
00554     av_free(audio_out);
00555     allocated_audio_buf_size= allocated_audio_out_size= 0;
00556     av_free(samples);
00557 
00558 #if CONFIG_AVFILTER
00559     avfilter_uninit();
00560 #endif
00561 
00562     if (received_sigterm) {
00563         fprintf(stderr,
00564             "Received signal %d: terminating.\n",
00565             (int) received_sigterm);
00566         exit (255);
00567     }
00568 
00569     exit(ret); /* not all OS-es handle main() return value */
00570     return ret;
00571 }
00572 
00573 /* similar to ff_dynarray_add() and av_fast_realloc() */
00574 static void *grow_array(void *array, int elem_size, int *size, int new_size)
00575 {
00576     if (new_size >= INT_MAX / elem_size) {
00577         fprintf(stderr, "Array too big.\n");
00578         ffmpeg_exit(1);
00579     }
00580     if (*size < new_size) {
00581         uint8_t *tmp = av_realloc(array, new_size*elem_size);
00582         if (!tmp) {
00583             fprintf(stderr, "Could not alloc buffer.\n");
00584             ffmpeg_exit(1);
00585         }
00586         memset(tmp + *size*elem_size, 0, (new_size-*size) * elem_size);
00587         *size = new_size;
00588         return tmp;
00589     }
00590     return array;
00591 }
00592 
00593 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
00594 {
00595     if(codec && codec->sample_fmts){
00596         const enum AVSampleFormat *p= codec->sample_fmts;
00597         for(; *p!=-1; p++){
00598             if(*p == st->codec->sample_fmt)
00599                 break;
00600         }
00601         if (*p == -1) {
00602             av_log(NULL, AV_LOG_WARNING,
00603                    "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
00604                    av_get_sample_fmt_name(st->codec->sample_fmt),
00605                    codec->name,
00606                    av_get_sample_fmt_name(codec->sample_fmts[0]));
00607             st->codec->sample_fmt = codec->sample_fmts[0];
00608         }
00609     }
00610 }
00611 
00612 static void choose_sample_rate(AVStream *st, AVCodec *codec)
00613 {
00614     if(codec && codec->supported_samplerates){
00615         const int *p= codec->supported_samplerates;
00616         int best=0;
00617         int best_dist=INT_MAX;
00618         for(; *p; p++){
00619             int dist= abs(st->codec->sample_rate - *p);
00620             if(dist < best_dist){
00621                 best_dist= dist;
00622                 best= *p;
00623             }
00624         }
00625         if(best_dist){
00626             av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
00627         }
00628         st->codec->sample_rate= best;
00629     }
00630 }
00631 
00632 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
00633 {
00634     if(codec && codec->pix_fmts){
00635         const enum PixelFormat *p= codec->pix_fmts;
00636         if(st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL){
00637             if(st->codec->codec_id==CODEC_ID_MJPEG){
00638                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE};
00639             }else if(st->codec->codec_id==CODEC_ID_LJPEG){
00640                 p= (const enum PixelFormat[]){PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE};
00641             }
00642         }
00643         for(; *p!=-1; p++){
00644             if(*p == st->codec->pix_fmt)
00645                 break;
00646         }
00647         if(*p == -1)
00648             st->codec->pix_fmt = codec->pix_fmts[0];
00649     }
00650 }
00651 
00652 static AVOutputStream *new_output_stream(AVFormatContext *oc, int file_idx)
00653 {
00654     int idx = oc->nb_streams - 1;
00655     AVOutputStream *ost;
00656 
00657     output_streams_for_file[file_idx] =
00658         grow_array(output_streams_for_file[file_idx],
00659                    sizeof(*output_streams_for_file[file_idx]),
00660                    &nb_output_streams_for_file[file_idx],
00661                    oc->nb_streams);
00662     ost = output_streams_for_file[file_idx][idx] =
00663         av_mallocz(sizeof(AVOutputStream));
00664     if (!ost) {
00665         fprintf(stderr, "Could not alloc output stream\n");
00666         ffmpeg_exit(1);
00667     }
00668     ost->file_index = file_idx;
00669     ost->index = idx;
00670     return ost;
00671 }
00672 
00673 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
00674 {
00675     int i, err;
00676     AVFormatContext *ic;
00677     int nopts = 0;
00678 
00679     err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
00680     if (err < 0)
00681         return err;
00682     /* copy stream format */
00683     s->nb_streams = 0;
00684     for(i=0;i<ic->nb_streams;i++) {
00685         AVStream *st;
00686         AVCodec *codec;
00687 
00688         s->nb_streams++;
00689 
00690         // FIXME: a more elegant solution is needed
00691         st = av_mallocz(sizeof(AVStream));
00692         memcpy(st, ic->streams[i], sizeof(AVStream));
00693         st->codec = avcodec_alloc_context();
00694         if (!st->codec) {
00695             print_error(filename, AVERROR(ENOMEM));
00696             ffmpeg_exit(1);
00697         }
00698         avcodec_copy_context(st->codec, ic->streams[i]->codec);
00699         s->streams[i] = st;
00700 
00701         codec = avcodec_find_encoder(st->codec->codec_id);
00702         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
00703             if (audio_stream_copy) {
00704                 st->stream_copy = 1;
00705             } else
00706                 choose_sample_fmt(st, codec);
00707         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
00708             if (video_stream_copy) {
00709                 st->stream_copy = 1;
00710             } else
00711                 choose_pixel_fmt(st, codec);
00712         }
00713 
00714         if(st->codec->flags & CODEC_FLAG_BITEXACT)
00715             nopts = 1;
00716 
00717         new_output_stream(s, nb_output_files);
00718     }
00719 
00720     if (!nopts)
00721         s->timestamp = av_gettime();
00722 
00723     av_close_input_file(ic);
00724     return 0;
00725 }
00726 
00727 static double
00728 get_sync_ipts(const AVOutputStream *ost)
00729 {
00730     const AVInputStream *ist = ost->sync_ist;
00731     return (double)(ist->pts - start_time)/AV_TIME_BASE;
00732 }
00733 
00734 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
00735     int ret;
00736 
00737     while(bsfc){
00738         AVPacket new_pkt= *pkt;
00739         int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
00740                                           &new_pkt.data, &new_pkt.size,
00741                                           pkt->data, pkt->size,
00742                                           pkt->flags & AV_PKT_FLAG_KEY);
00743         if(a>0){
00744             av_free_packet(pkt);
00745             new_pkt.destruct= av_destruct_packet;
00746         } else if(a<0){
00747             fprintf(stderr, "%s failed for stream %d, codec %s",
00748                     bsfc->filter->name, pkt->stream_index,
00749                     avctx->codec ? avctx->codec->name : "copy");
00750             print_error("", a);
00751             if (exit_on_error)
00752                 ffmpeg_exit(1);
00753         }
00754         *pkt= new_pkt;
00755 
00756         bsfc= bsfc->next;
00757     }
00758 
00759     ret= av_interleaved_write_frame(s, pkt);
00760     if(ret < 0){
00761         print_error("av_interleaved_write_frame()", ret);
00762         ffmpeg_exit(1);
00763     }
00764 }
00765 
00766 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
00767 
00768 static void do_audio_out(AVFormatContext *s,
00769                          AVOutputStream *ost,
00770                          AVInputStream *ist,
00771                          unsigned char *buf, int size)
00772 {
00773     uint8_t *buftmp;
00774     int64_t audio_out_size, audio_buf_size;
00775     int64_t allocated_for_size= size;
00776 
00777     int size_out, frame_bytes, ret, resample_changed;
00778     AVCodecContext *enc= ost->st->codec;
00779     AVCodecContext *dec= ist->st->codec;
00780     int osize= av_get_bits_per_sample_fmt(enc->sample_fmt)/8;
00781     int isize= av_get_bits_per_sample_fmt(dec->sample_fmt)/8;
00782     const int coded_bps = av_get_bits_per_sample(enc->codec->id);
00783 
00784 need_realloc:
00785     audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
00786     audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
00787     audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
00788     audio_buf_size= FFMAX(audio_buf_size, enc->frame_size);
00789     audio_buf_size*= osize*enc->channels;
00790 
00791     audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
00792     if(coded_bps > 8*osize)
00793         audio_out_size= audio_out_size * coded_bps / (8*osize);
00794     audio_out_size += FF_MIN_BUFFER_SIZE;
00795 
00796     if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
00797         fprintf(stderr, "Buffer sizes too large\n");
00798         ffmpeg_exit(1);
00799     }
00800 
00801     av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
00802     av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
00803     if (!audio_buf || !audio_out){
00804         fprintf(stderr, "Out of memory in do_audio_out\n");
00805         ffmpeg_exit(1);
00806     }
00807 
00808     if (enc->channels != dec->channels)
00809         ost->audio_resample = 1;
00810 
00811     resample_changed = ost->resample_sample_fmt  != dec->sample_fmt ||
00812                        ost->resample_channels    != dec->channels   ||
00813                        ost->resample_sample_rate != dec->sample_rate;
00814 
00815     if ((ost->audio_resample && !ost->resample) || resample_changed) {
00816         if (resample_changed) {
00817             av_log(NULL, AV_LOG_INFO, "Input stream #%d.%d frame changed from rate:%d fmt:%s ch:%d to rate:%d fmt:%s ch:%d\n",
00818                    ist->file_index, ist->index,
00819                    ost->resample_sample_rate, av_get_sample_fmt_name(ost->resample_sample_fmt), ost->resample_channels,
00820                    dec->sample_rate, av_get_sample_fmt_name(dec->sample_fmt), dec->channels);
00821             ost->resample_sample_fmt  = dec->sample_fmt;
00822             ost->resample_channels    = dec->channels;
00823             ost->resample_sample_rate = dec->sample_rate;
00824             if (ost->resample)
00825                 audio_resample_close(ost->resample);
00826         }
00827         /* if audio_sync_method is >1 the resampler is needed for audio drift compensation */
00828         if (audio_sync_method <= 1 &&
00829             ost->resample_sample_fmt  == enc->sample_fmt &&
00830             ost->resample_channels    == enc->channels   &&
00831             ost->resample_sample_rate == enc->sample_rate) {
00832             ost->resample = NULL;
00833             ost->audio_resample = 0;
00834         } else {
00835             if (dec->sample_fmt != AV_SAMPLE_FMT_S16)
00836                 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
00837             ost->resample = av_audio_resample_init(enc->channels,    dec->channels,
00838                                                    enc->sample_rate, dec->sample_rate,
00839                                                    enc->sample_fmt,  dec->sample_fmt,
00840                                                    16, 10, 0, 0.8);
00841             if (!ost->resample) {
00842                 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
00843                         dec->channels, dec->sample_rate,
00844                         enc->channels, enc->sample_rate);
00845                 ffmpeg_exit(1);
00846             }
00847         }
00848     }
00849 
00850 #define MAKE_SFMT_PAIR(a,b) ((a)+AV_SAMPLE_FMT_NB*(b))
00851     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
00852         MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
00853         if (ost->reformat_ctx)
00854             av_audio_convert_free(ost->reformat_ctx);
00855         ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
00856                                                    dec->sample_fmt, 1, NULL, 0);
00857         if (!ost->reformat_ctx) {
00858             fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
00859                 av_get_sample_fmt_name(dec->sample_fmt),
00860                 av_get_sample_fmt_name(enc->sample_fmt));
00861             ffmpeg_exit(1);
00862         }
00863         ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
00864     }
00865 
00866     if(audio_sync_method){
00867         double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
00868                 - av_fifo_size(ost->fifo)/(enc->channels * 2);
00869         double idelta= delta*dec->sample_rate / enc->sample_rate;
00870         int byte_delta= ((int)idelta)*2*dec->channels;
00871 
00872         //FIXME resample delay
00873         if(fabs(delta) > 50){
00874             if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
00875                 if(byte_delta < 0){
00876                     byte_delta= FFMAX(byte_delta, -size);
00877                     size += byte_delta;
00878                     buf  -= byte_delta;
00879                     if(verbose > 2)
00880                         fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
00881                     if(!size)
00882                         return;
00883                     ist->is_start=0;
00884                 }else{
00885                     static uint8_t *input_tmp= NULL;
00886                     input_tmp= av_realloc(input_tmp, byte_delta + size);
00887 
00888                     if(byte_delta > allocated_for_size - size){
00889                         allocated_for_size= byte_delta + (int64_t)size;
00890                         goto need_realloc;
00891                     }
00892                     ist->is_start=0;
00893 
00894                     memset(input_tmp, 0, byte_delta);
00895                     memcpy(input_tmp + byte_delta, buf, size);
00896                     buf= input_tmp;
00897                     size += byte_delta;
00898                     if(verbose > 2)
00899                         fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
00900                 }
00901             }else if(audio_sync_method>1){
00902                 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
00903                 av_assert0(ost->audio_resample);
00904                 if(verbose > 2)
00905                     fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
00906 //                fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
00907                 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
00908             }
00909         }
00910     }else
00911         ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
00912                         - av_fifo_size(ost->fifo)/(enc->channels * 2); //FIXME wrong
00913 
00914     if (ost->audio_resample) {
00915         buftmp = audio_buf;
00916         size_out = audio_resample(ost->resample,
00917                                   (short *)buftmp, (short *)buf,
00918                                   size / (dec->channels * isize));
00919         size_out = size_out * enc->channels * osize;
00920     } else {
00921         buftmp = buf;
00922         size_out = size;
00923     }
00924 
00925     if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
00926         const void *ibuf[6]= {buftmp};
00927         void *obuf[6]= {audio_buf};
00928         int istride[6]= {isize};
00929         int ostride[6]= {osize};
00930         int len= size_out/istride[0];
00931         if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
00932             printf("av_audio_convert() failed\n");
00933             if (exit_on_error)
00934                 ffmpeg_exit(1);
00935             return;
00936         }
00937         buftmp = audio_buf;
00938         size_out = len*osize;
00939     }
00940 
00941     /* now encode as many frames as possible */
00942     if (enc->frame_size > 1) {
00943         /* output resampled raw samples */
00944         if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
00945             fprintf(stderr, "av_fifo_realloc2() failed\n");
00946             ffmpeg_exit(1);
00947         }
00948         av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
00949 
00950         frame_bytes = enc->frame_size * osize * enc->channels;
00951 
00952         while (av_fifo_size(ost->fifo) >= frame_bytes) {
00953             AVPacket pkt;
00954             av_init_packet(&pkt);
00955 
00956             av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
00957 
00958             //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
00959 
00960             ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
00961                                        (short *)audio_buf);
00962             if (ret < 0) {
00963                 fprintf(stderr, "Audio encoding failed\n");
00964                 ffmpeg_exit(1);
00965             }
00966             audio_size += ret;
00967             pkt.stream_index= ost->index;
00968             pkt.data= audio_out;
00969             pkt.size= ret;
00970             if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
00971                 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
00972             pkt.flags |= AV_PKT_FLAG_KEY;
00973             write_frame(s, &pkt, enc, ost->bitstream_filters);
00974 
00975             ost->sync_opts += enc->frame_size;
00976         }
00977     } else {
00978         AVPacket pkt;
00979         av_init_packet(&pkt);
00980 
00981         ost->sync_opts += size_out / (osize * enc->channels);
00982 
00983         /* output a pcm frame */
00984         /* determine the size of the coded buffer */
00985         size_out /= osize;
00986         if (coded_bps)
00987             size_out = size_out*coded_bps/8;
00988 
00989         if(size_out > audio_out_size){
00990             fprintf(stderr, "Internal error, buffer size too small\n");
00991             ffmpeg_exit(1);
00992         }
00993 
00994         //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
00995         ret = avcodec_encode_audio(enc, audio_out, size_out,
00996                                    (short *)buftmp);
00997         if (ret < 0) {
00998             fprintf(stderr, "Audio encoding failed\n");
00999             ffmpeg_exit(1);
01000         }
01001         audio_size += ret;
01002         pkt.stream_index= ost->index;
01003         pkt.data= audio_out;
01004         pkt.size= ret;
01005         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
01006             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
01007         pkt.flags |= AV_PKT_FLAG_KEY;
01008         write_frame(s, &pkt, enc, ost->bitstream_filters);
01009     }
01010 }
01011 
01012 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
01013 {
01014     AVCodecContext *dec;
01015     AVPicture *picture2;
01016     AVPicture picture_tmp;
01017     uint8_t *buf = 0;
01018 
01019     dec = ist->st->codec;
01020 
01021     /* deinterlace : must be done before any resize */
01022     if (do_deinterlace) {
01023         int size;
01024 
01025         /* create temporary picture */
01026         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
01027         buf = av_malloc(size);
01028         if (!buf)
01029             return;
01030 
01031         picture2 = &picture_tmp;
01032         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
01033 
01034         if(avpicture_deinterlace(picture2, picture,
01035                                  dec->pix_fmt, dec->width, dec->height) < 0) {
01036             /* if error, do not deinterlace */
01037             fprintf(stderr, "Deinterlacing failed\n");
01038             av_free(buf);
01039             buf = NULL;
01040             picture2 = picture;
01041         }
01042     } else {
01043         picture2 = picture;
01044     }
01045 
01046     if (picture != picture2)
01047         *picture = *picture2;
01048     *bufp = buf;
01049 }
01050 
01051 /* we begin to correct av delay at this threshold */
01052 #define AV_DELAY_MAX 0.100
01053 
01054 static void do_subtitle_out(AVFormatContext *s,
01055                             AVOutputStream *ost,
01056                             AVInputStream *ist,
01057                             AVSubtitle *sub,
01058                             int64_t pts)
01059 {
01060     static uint8_t *subtitle_out = NULL;
01061     int subtitle_out_max_size = 1024 * 1024;
01062     int subtitle_out_size, nb, i;
01063     AVCodecContext *enc;
01064     AVPacket pkt;
01065 
01066     if (pts == AV_NOPTS_VALUE) {
01067         fprintf(stderr, "Subtitle packets must have a pts\n");
01068         if (exit_on_error)
01069             ffmpeg_exit(1);
01070         return;
01071     }
01072 
01073     enc = ost->st->codec;
01074 
01075     if (!subtitle_out) {
01076         subtitle_out = av_malloc(subtitle_out_max_size);
01077     }
01078 
01079     /* Note: DVB subtitle need one packet to draw them and one other
01080        packet to clear them */
01081     /* XXX: signal it in the codec context ? */
01082     if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
01083         nb = 2;
01084     else
01085         nb = 1;
01086 
01087     for(i = 0; i < nb; i++) {
01088         sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
01089         // start_display_time is required to be 0
01090         sub->pts              += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
01091         sub->end_display_time -= sub->start_display_time;
01092         sub->start_display_time = 0;
01093         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
01094                                                     subtitle_out_max_size, sub);
01095         if (subtitle_out_size < 0) {
01096             fprintf(stderr, "Subtitle encoding failed\n");
01097             ffmpeg_exit(1);
01098         }
01099 
01100         av_init_packet(&pkt);
01101         pkt.stream_index = ost->index;
01102         pkt.data = subtitle_out;
01103         pkt.size = subtitle_out_size;
01104         pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
01105         if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
01106             /* XXX: the pts correction is handled here. Maybe handling
01107                it in the codec would be better */
01108             if (i == 0)
01109                 pkt.pts += 90 * sub->start_display_time;
01110             else
01111                 pkt.pts += 90 * sub->end_display_time;
01112         }
01113         write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
01114     }
01115 }
01116 
01117 static int bit_buffer_size= 1024*256;
01118 static uint8_t *bit_buffer= NULL;
01119 
01120 static void do_video_out(AVFormatContext *s,
01121                          AVOutputStream *ost,
01122                          AVInputStream *ist,
01123                          AVFrame *in_picture,
01124                          int *frame_size)
01125 {
01126     int nb_frames, i, ret;
01127     AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
01128     AVCodecContext *enc, *dec;
01129     double sync_ipts;
01130 
01131     enc = ost->st->codec;
01132     dec = ist->st->codec;
01133 
01134     sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
01135 
01136     /* by default, we output a single frame */
01137     nb_frames = 1;
01138 
01139     *frame_size = 0;
01140 
01141     if(video_sync_method){
01142         double vdelta = sync_ipts - ost->sync_opts;
01143         //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
01144         if (vdelta < -1.1)
01145             nb_frames = 0;
01146         else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
01147             if(vdelta<=-0.6){
01148                 nb_frames=0;
01149             }else if(vdelta>0.6)
01150                 ost->sync_opts= lrintf(sync_ipts);
01151         }else if (vdelta > 1.1)
01152             nb_frames = lrintf(vdelta);
01153 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
01154         if (nb_frames == 0){
01155             ++nb_frames_drop;
01156             if (verbose>2)
01157                 fprintf(stderr, "*** drop!\n");
01158         }else if (nb_frames > 1) {
01159             nb_frames_dup += nb_frames - 1;
01160             if (verbose>2)
01161                 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
01162         }
01163     }else
01164         ost->sync_opts= lrintf(sync_ipts);
01165 
01166     nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
01167     if (nb_frames <= 0)
01168         return;
01169 
01170     formatted_picture = in_picture;
01171     final_picture = formatted_picture;
01172     padding_src = formatted_picture;
01173     resampling_dst = &ost->pict_tmp;
01174 
01175     if (   ost->resample_height != ist->st->codec->height
01176         || ost->resample_width  != ist->st->codec->width
01177         || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
01178 
01179         fprintf(stderr,"Input Stream #%d.%d frame size changed to %dx%d, %s\n", ist->file_index, ist->index, ist->st->codec->width,     ist->st->codec->height,avcodec_get_pix_fmt_name(ist->st->codec->pix_fmt));
01180         if(!ost->video_resample)
01181             ffmpeg_exit(1);
01182     }
01183 
01184 #if !CONFIG_AVFILTER
01185     if (ost->video_resample) {
01186         padding_src = NULL;
01187         final_picture = &ost->pict_tmp;
01188         if(  ost->resample_height != ist->st->codec->height
01189           || ost->resample_width  != ist->st->codec->width
01190           || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
01191 
01192             /* initialize a new scaler context */
01193             sws_freeContext(ost->img_resample_ctx);
01194             sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
01195             ost->img_resample_ctx = sws_getContext(
01196                 ist->st->codec->width,
01197                 ist->st->codec->height,
01198                 ist->st->codec->pix_fmt,
01199                 ost->st->codec->width,
01200                 ost->st->codec->height,
01201                 ost->st->codec->pix_fmt,
01202                 sws_flags, NULL, NULL, NULL);
01203             if (ost->img_resample_ctx == NULL) {
01204                 fprintf(stderr, "Cannot get resampling context\n");
01205                 ffmpeg_exit(1);
01206             }
01207         }
01208         sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
01209               0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
01210     }
01211 #endif
01212 
01213     /* duplicates frame if needed */
01214     for(i=0;i<nb_frames;i++) {
01215         AVPacket pkt;
01216         av_init_packet(&pkt);
01217         pkt.stream_index= ost->index;
01218 
01219         if (s->oformat->flags & AVFMT_RAWPICTURE) {
01220             /* raw pictures are written as AVPicture structure to
01221                avoid any copies. We support temorarily the older
01222                method. */
01223             AVFrame* old_frame = enc->coded_frame;
01224             enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
01225             pkt.data= (uint8_t *)final_picture;
01226             pkt.size=  sizeof(AVPicture);
01227             pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
01228             pkt.flags |= AV_PKT_FLAG_KEY;
01229 
01230             write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
01231             enc->coded_frame = old_frame;
01232         } else {
01233             AVFrame big_picture;
01234 
01235             big_picture= *final_picture;
01236             /* better than nothing: use input picture interlaced
01237                settings */
01238             big_picture.interlaced_frame = in_picture->interlaced_frame;
01239             if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
01240                 if(top_field_first == -1)
01241                     big_picture.top_field_first = in_picture->top_field_first;
01242                 else
01243                     big_picture.top_field_first = top_field_first;
01244             }
01245 
01246             /* handles sameq here. This is not correct because it may
01247                not be a global option */
01248             big_picture.quality = same_quality ? ist->st->quality : ost->st->quality;
01249             if(!me_threshold)
01250                 big_picture.pict_type = 0;
01251 //            big_picture.pts = AV_NOPTS_VALUE;
01252             big_picture.pts= ost->sync_opts;
01253 //            big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
01254 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
01255             if (ost->forced_kf_index < ost->forced_kf_count &&
01256                 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
01257                 big_picture.pict_type = FF_I_TYPE;
01258                 ost->forced_kf_index++;
01259             }
01260             ret = avcodec_encode_video(enc,
01261                                        bit_buffer, bit_buffer_size,
01262                                        &big_picture);
01263             if (ret < 0) {
01264                 fprintf(stderr, "Video encoding failed\n");
01265                 ffmpeg_exit(1);
01266             }
01267 
01268             if(ret>0){
01269                 pkt.data= bit_buffer;
01270                 pkt.size= ret;
01271                 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
01272                     pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
01273 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
01274    pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
01275    pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
01276 
01277                 if(enc->coded_frame->key_frame)
01278                     pkt.flags |= AV_PKT_FLAG_KEY;
01279                 write_frame(s, &pkt, ost->st->codec, ost->bitstream_filters);
01280                 *frame_size = ret;
01281                 video_size += ret;
01282                 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
01283                 //        enc->frame_number-1, ret, enc->pict_type);
01284                 /* if two pass, output log */
01285                 if (ost->logfile && enc->stats_out) {
01286                     fprintf(ost->logfile, "%s", enc->stats_out);
01287                 }
01288             }
01289         }
01290         ost->sync_opts++;
01291         ost->frame_number++;
01292     }
01293 }
01294 
01295 static double psnr(double d){
01296     return -10.0*log(d)/log(10.0);
01297 }
01298 
01299 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
01300                            int frame_size)
01301 {
01302     AVCodecContext *enc;
01303     int frame_number;
01304     double ti1, bitrate, avg_bitrate;
01305 
01306     /* this is executed just the first time do_video_stats is called */
01307     if (!vstats_file) {
01308         vstats_file = fopen(vstats_filename, "w");
01309         if (!vstats_file) {
01310             perror("fopen");
01311             ffmpeg_exit(1);
01312         }
01313     }
01314 
01315     enc = ost->st->codec;
01316     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
01317         frame_number = ost->frame_number;
01318         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
01319         if (enc->flags&CODEC_FLAG_PSNR)
01320             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
01321 
01322         fprintf(vstats_file,"f_size= %6d ", frame_size);
01323         /* compute pts value */
01324         ti1 = ost->sync_opts * av_q2d(enc->time_base);
01325         if (ti1 < 0.01)
01326             ti1 = 0.01;
01327 
01328         bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
01329         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
01330         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
01331             (double)video_size / 1024, ti1, bitrate, avg_bitrate);
01332         fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
01333     }
01334 }
01335 
01336 static void print_report(AVFormatContext **output_files,
01337                          AVOutputStream **ost_table, int nb_ostreams,
01338                          int is_last_report)
01339 {
01340     char buf[1024];
01341     AVOutputStream *ost;
01342     AVFormatContext *oc;
01343     int64_t total_size;
01344     AVCodecContext *enc;
01345     int frame_number, vid, i;
01346     double bitrate, ti1, pts;
01347     static int64_t last_time = -1;
01348     static int qp_histogram[52];
01349 
01350     if (!is_last_report) {
01351         int64_t cur_time;
01352         /* display the report every 0.5 seconds */
01353         cur_time = av_gettime();
01354         if (last_time == -1) {
01355             last_time = cur_time;
01356             return;
01357         }
01358         if ((cur_time - last_time) < 500000)
01359             return;
01360         last_time = cur_time;
01361     }
01362 
01363 
01364     oc = output_files[0];
01365 
01366     total_size = avio_size(oc->pb);
01367     if(total_size<0) // FIXME improve avio_size() so it works with non seekable output too
01368         total_size= avio_tell(oc->pb);
01369 
01370     buf[0] = '\0';
01371     ti1 = 1e10;
01372     vid = 0;
01373     for(i=0;i<nb_ostreams;i++) {
01374         ost = ost_table[i];
01375         enc = ost->st->codec;
01376         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
01377             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
01378                      !ost->st->stream_copy ?
01379                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
01380         }
01381         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
01382             float t = (av_gettime()-timer_start) / 1000000.0;
01383 
01384             frame_number = ost->frame_number;
01385             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
01386                      frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
01387                      !ost->st->stream_copy ?
01388                      enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
01389             if(is_last_report)
01390                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
01391             if(qp_hist){
01392                 int j;
01393                 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
01394                 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
01395                     qp_histogram[qp]++;
01396                 for(j=0; j<32; j++)
01397                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
01398             }
01399             if (enc->flags&CODEC_FLAG_PSNR){
01400                 int j;
01401                 double error, error_sum=0;
01402                 double scale, scale_sum=0;
01403                 char type[3]= {'Y','U','V'};
01404                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
01405                 for(j=0; j<3; j++){
01406                     if(is_last_report){
01407                         error= enc->error[j];
01408                         scale= enc->width*enc->height*255.0*255.0*frame_number;
01409                     }else{
01410                         error= enc->coded_frame->error[j];
01411                         scale= enc->width*enc->height*255.0*255.0;
01412                     }
01413                     if(j) scale/=4;
01414                     error_sum += error;
01415                     scale_sum += scale;
01416                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
01417                 }
01418                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
01419             }
01420             vid = 1;
01421         }
01422         /* compute min output value */
01423         pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
01424         if ((pts < ti1) && (pts > 0))
01425             ti1 = pts;
01426     }
01427     if (ti1 < 0.01)
01428         ti1 = 0.01;
01429 
01430     if (verbose || is_last_report) {
01431         bitrate = (double)(total_size * 8) / ti1 / 1000.0;
01432 
01433         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
01434             "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
01435             (double)total_size / 1024, ti1, bitrate);
01436 
01437         if (nb_frames_dup || nb_frames_drop)
01438           snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
01439                   nb_frames_dup, nb_frames_drop);
01440 
01441         if (verbose >= 0)
01442             fprintf(stderr, "%s    \r", buf);
01443 
01444         fflush(stderr);
01445     }
01446 
01447     if (is_last_report && verbose >= 0){
01448         int64_t raw= audio_size + video_size + extra_size;
01449         fprintf(stderr, "\n");
01450         fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
01451                 video_size/1024.0,
01452                 audio_size/1024.0,
01453                 extra_size/1024.0,
01454                 100.0*(total_size - raw)/raw
01455         );
01456     }
01457 }
01458 
01459 /* pkt = NULL means EOF (needed to flush decoder buffers) */
01460 static int output_packet(AVInputStream *ist, int ist_index,
01461                          AVOutputStream **ost_table, int nb_ostreams,
01462                          const AVPacket *pkt)
01463 {
01464     AVFormatContext *os;
01465     AVOutputStream *ost;
01466     int ret, i;
01467     int got_picture;
01468     AVFrame picture;
01469     void *buffer_to_free;
01470     static unsigned int samples_size= 0;
01471     AVSubtitle subtitle, *subtitle_to_free;
01472     int64_t pkt_pts = AV_NOPTS_VALUE;
01473 #if CONFIG_AVFILTER
01474     int frame_available;
01475 #endif
01476 
01477     AVPacket avpkt;
01478     int bps = av_get_bits_per_sample_fmt(ist->st->codec->sample_fmt)>>3;
01479 
01480     if(ist->next_pts == AV_NOPTS_VALUE)
01481         ist->next_pts= ist->pts;
01482 
01483     if (pkt == NULL) {
01484         /* EOF handling */
01485         av_init_packet(&avpkt);
01486         avpkt.data = NULL;
01487         avpkt.size = 0;
01488         goto handle_eof;
01489     } else {
01490         avpkt = *pkt;
01491     }
01492 
01493     if(pkt->dts != AV_NOPTS_VALUE)
01494         ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
01495     if(pkt->pts != AV_NOPTS_VALUE)
01496         pkt_pts = av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
01497 
01498     //while we have more to decode or while the decoder did output something on EOF
01499     while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
01500         uint8_t *data_buf, *decoded_data_buf;
01501         int data_size, decoded_data_size;
01502     handle_eof:
01503         ist->pts= ist->next_pts;
01504 
01505         if(avpkt.size && avpkt.size != pkt->size &&
01506            ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
01507             fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
01508             ist->showed_multi_packet_warning=1;
01509         }
01510 
01511         /* decode the packet if needed */
01512         decoded_data_buf = NULL; /* fail safe */
01513         decoded_data_size= 0;
01514         data_buf  = avpkt.data;
01515         data_size = avpkt.size;
01516         subtitle_to_free = NULL;
01517         if (ist->decoding_needed) {
01518             switch(ist->st->codec->codec_type) {
01519             case AVMEDIA_TYPE_AUDIO:{
01520                 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
01521                     samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
01522                     av_free(samples);
01523                     samples= av_malloc(samples_size);
01524                 }
01525                 decoded_data_size= samples_size;
01526                     /* XXX: could avoid copy if PCM 16 bits with same
01527                        endianness as CPU */
01528                 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
01529                                             &avpkt);
01530                 if (ret < 0)
01531                     goto fail_decode;
01532                 avpkt.data += ret;
01533                 avpkt.size -= ret;
01534                 data_size   = ret;
01535                 /* Some bug in mpeg audio decoder gives */
01536                 /* decoded_data_size < 0, it seems they are overflows */
01537                 if (decoded_data_size <= 0) {
01538                     /* no audio frame */
01539                     continue;
01540                 }
01541                 decoded_data_buf = (uint8_t *)samples;
01542                 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
01543                     (ist->st->codec->sample_rate * ist->st->codec->channels);
01544                 break;}
01545             case AVMEDIA_TYPE_VIDEO:
01546                     decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
01547                     /* XXX: allocate picture correctly */
01548                     avcodec_get_frame_defaults(&picture);
01549                     avpkt.pts = pkt_pts;
01550                     avpkt.dts = ist->pts;
01551                     pkt_pts = AV_NOPTS_VALUE;
01552 
01553                     ret = avcodec_decode_video2(ist->st->codec,
01554                                                 &picture, &got_picture, &avpkt);
01555                     ist->st->quality= picture.quality;
01556                     if (ret < 0)
01557                         goto fail_decode;
01558                     if (!got_picture) {
01559                         /* no picture yet */
01560                         goto discard_packet;
01561                     }
01562                     ist->next_pts = ist->pts = picture.best_effort_timestamp;
01563                     if (ist->st->codec->time_base.num != 0) {
01564                         int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
01565                         ist->next_pts += ((int64_t)AV_TIME_BASE *
01566                                           ist->st->codec->time_base.num * ticks) /
01567                             ist->st->codec->time_base.den;
01568                     }
01569                     avpkt.size = 0;
01570                     break;
01571             case AVMEDIA_TYPE_SUBTITLE:
01572                 ret = avcodec_decode_subtitle2(ist->st->codec,
01573                                                &subtitle, &got_picture, &avpkt);
01574                 if (ret < 0)
01575                     goto fail_decode;
01576                 if (!got_picture) {
01577                     goto discard_packet;
01578                 }
01579                 subtitle_to_free = &subtitle;
01580                 avpkt.size = 0;
01581                 break;
01582             default:
01583                 goto fail_decode;
01584             }
01585         } else {
01586             switch(ist->st->codec->codec_type) {
01587             case AVMEDIA_TYPE_AUDIO:
01588                 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
01589                     ist->st->codec->sample_rate;
01590                 break;
01591             case AVMEDIA_TYPE_VIDEO:
01592                 if (ist->st->codec->time_base.num != 0) {
01593                     int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
01594                     ist->next_pts += ((int64_t)AV_TIME_BASE *
01595                                       ist->st->codec->time_base.num * ticks) /
01596                         ist->st->codec->time_base.den;
01597                 }
01598                 break;
01599             }
01600             ret = avpkt.size;
01601             avpkt.size = 0;
01602         }
01603 
01604         buffer_to_free = NULL;
01605         if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
01606             pre_process_video_frame(ist, (AVPicture *)&picture,
01607                                     &buffer_to_free);
01608         }
01609 
01610 #if CONFIG_AVFILTER
01611         if(ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO){
01612             for(i=0;i<nb_ostreams;i++) {
01613                 ost = ost_table[i];
01614                 if (ost->input_video_filter && ost->source_index == ist_index) {
01615                     AVRational sar;
01616                     if (ist->st->sample_aspect_ratio.num) sar = ist->st->sample_aspect_ratio;
01617                     else                                  sar = ist->st->codec->sample_aspect_ratio;
01618                     // add it to be filtered
01619                     av_vsrc_buffer_add_frame(ost->input_video_filter, &picture,
01620                                              ist->pts,
01621                                              sar);
01622                 }
01623             }
01624         }
01625 #endif
01626 
01627         // preprocess audio (volume)
01628         if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
01629             if (audio_volume != 256) {
01630                 short *volp;
01631                 volp = samples;
01632                 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
01633                     int v = ((*volp) * audio_volume + 128) >> 8;
01634                     if (v < -32768) v = -32768;
01635                     if (v >  32767) v = 32767;
01636                     *volp++ = v;
01637                 }
01638             }
01639         }
01640 
01641         /* frame rate emulation */
01642         if (rate_emu) {
01643             int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
01644             int64_t now = av_gettime() - ist->start;
01645             if (pts > now)
01646                 usleep(pts - now);
01647         }
01648         /* if output time reached then transcode raw format,
01649            encode packets and output them */
01650         if (start_time == 0 || ist->pts >= start_time)
01651             for(i=0;i<nb_ostreams;i++) {
01652                 int frame_size;
01653 
01654                 ost = ost_table[i];
01655                 if (ost->source_index == ist_index) {
01656 #if CONFIG_AVFILTER
01657                 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
01658                     !ost->output_video_filter || avfilter_poll_frame(ost->output_video_filter->inputs[0]);
01659                 while (frame_available) {
01660                     AVRational ist_pts_tb;
01661                     if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ost->output_video_filter)
01662                         get_filtered_video_frame(ost->output_video_filter, &picture, &ost->picref, &ist_pts_tb);
01663                     if (ost->picref)
01664                         ist->pts = av_rescale_q(ost->picref->pts, ist_pts_tb, AV_TIME_BASE_Q);
01665 #endif
01666                     os = output_files[ost->file_index];
01667 
01668                     /* set the input output pts pairs */
01669                     //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
01670 
01671                     if (ost->encoding_needed) {
01672                         av_assert0(ist->decoding_needed);
01673                         switch(ost->st->codec->codec_type) {
01674                         case AVMEDIA_TYPE_AUDIO:
01675                             do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
01676                             break;
01677                         case AVMEDIA_TYPE_VIDEO:
01678 #if CONFIG_AVFILTER
01679                             if (ost->picref->video)
01680                                 ost->st->codec->sample_aspect_ratio = ost->picref->video->pixel_aspect;
01681 #endif
01682                             do_video_out(os, ost, ist, &picture, &frame_size);
01683                             if (vstats_filename && frame_size)
01684                                 do_video_stats(os, ost, frame_size);
01685                             break;
01686                         case AVMEDIA_TYPE_SUBTITLE:
01687                             do_subtitle_out(os, ost, ist, &subtitle,
01688                                             pkt->pts);
01689                             break;
01690                         default:
01691                             abort();
01692                         }
01693                     } else {
01694                         AVFrame avframe; //FIXME/XXX remove this
01695                         AVPacket opkt;
01696                         int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
01697 
01698                         av_init_packet(&opkt);
01699 
01700                         if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
01701 #if !CONFIG_AVFILTER
01702                             continue;
01703 #else
01704                             goto cont;
01705 #endif
01706 
01707                         /* no reencoding needed : output the packet directly */
01708                         /* force the input stream PTS */
01709 
01710                         avcodec_get_frame_defaults(&avframe);
01711                         ost->st->codec->coded_frame= &avframe;
01712                         avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
01713 
01714                         if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
01715                             audio_size += data_size;
01716                         else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
01717                             video_size += data_size;
01718                             ost->sync_opts++;
01719                         }
01720 
01721                         opkt.stream_index= ost->index;
01722                         if(pkt->pts != AV_NOPTS_VALUE)
01723                             opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
01724                         else
01725                             opkt.pts= AV_NOPTS_VALUE;
01726 
01727                         if (pkt->dts == AV_NOPTS_VALUE)
01728                             opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
01729                         else
01730                             opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
01731                         opkt.dts -= ost_tb_start_time;
01732 
01733                         opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
01734                         opkt.flags= pkt->flags;
01735 
01736                         //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
01737                         if(   ost->st->codec->codec_id != CODEC_ID_H264
01738                            && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
01739                            && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
01740                            ) {
01741                             if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
01742                                 opkt.destruct= av_destruct_packet;
01743                         } else {
01744                             opkt.data = data_buf;
01745                             opkt.size = data_size;
01746                         }
01747 
01748                         write_frame(os, &opkt, ost->st->codec, ost->bitstream_filters);
01749                         ost->st->codec->frame_number++;
01750                         ost->frame_number++;
01751                         av_free_packet(&opkt);
01752                     }
01753 #if CONFIG_AVFILTER
01754                     cont:
01755                     frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
01756                                        ost->output_video_filter && avfilter_poll_frame(ost->output_video_filter->inputs[0]);
01757                     if(ost->picref)
01758                         avfilter_unref_buffer(ost->picref);
01759                 }
01760 #endif
01761                 }
01762             }
01763 
01764         av_free(buffer_to_free);
01765         /* XXX: allocate the subtitles in the codec ? */
01766         if (subtitle_to_free) {
01767             avsubtitle_free(subtitle_to_free);
01768             subtitle_to_free = NULL;
01769         }
01770     }
01771  discard_packet:
01772     if (pkt == NULL) {
01773         /* EOF handling */
01774 
01775         for(i=0;i<nb_ostreams;i++) {
01776             ost = ost_table[i];
01777             if (ost->source_index == ist_index) {
01778                 AVCodecContext *enc= ost->st->codec;
01779                 os = output_files[ost->file_index];
01780 
01781                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
01782                     continue;
01783                 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
01784                     continue;
01785 
01786                 if (ost->encoding_needed) {
01787                     for(;;) {
01788                         AVPacket pkt;
01789                         int fifo_bytes;
01790                         av_init_packet(&pkt);
01791                         pkt.stream_index= ost->index;
01792 
01793                         switch(ost->st->codec->codec_type) {
01794                         case AVMEDIA_TYPE_AUDIO:
01795                             fifo_bytes = av_fifo_size(ost->fifo);
01796                             ret = 0;
01797                             /* encode any samples remaining in fifo */
01798                             if (fifo_bytes > 0) {
01799                                 int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
01800                                 int fs_tmp = enc->frame_size;
01801 
01802                                 av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);
01803                                 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
01804                                     enc->frame_size = fifo_bytes / (osize * enc->channels);
01805                                 } else { /* pad */
01806                                     int frame_bytes = enc->frame_size*osize*enc->channels;
01807                                     if (allocated_audio_buf_size < frame_bytes)
01808                                         ffmpeg_exit(1);
01809                                     memset(audio_buf+fifo_bytes, 0, frame_bytes - fifo_bytes);
01810                                 }
01811 
01812                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, (short *)audio_buf);
01813                                 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
01814                                                           ost->st->time_base.num, enc->sample_rate);
01815                                 enc->frame_size = fs_tmp;
01816                             }
01817                             if(ret <= 0) {
01818                                 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
01819                             }
01820                             if (ret < 0) {
01821                                 fprintf(stderr, "Audio encoding failed\n");
01822                                 ffmpeg_exit(1);
01823                             }
01824                             audio_size += ret;
01825                             pkt.flags |= AV_PKT_FLAG_KEY;
01826                             break;
01827                         case AVMEDIA_TYPE_VIDEO:
01828                             ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
01829                             if (ret < 0) {
01830                                 fprintf(stderr, "Video encoding failed\n");
01831                                 ffmpeg_exit(1);
01832                             }
01833                             video_size += ret;
01834                             if(enc->coded_frame && enc->coded_frame->key_frame)
01835                                 pkt.flags |= AV_PKT_FLAG_KEY;
01836                             if (ost->logfile && enc->stats_out) {
01837                                 fprintf(ost->logfile, "%s", enc->stats_out);
01838                             }
01839                             break;
01840                         default:
01841                             ret=-1;
01842                         }
01843 
01844                         if(ret<=0)
01845                             break;
01846                         pkt.data= bit_buffer;
01847                         pkt.size= ret;
01848                         if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
01849                             pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
01850                         write_frame(os, &pkt, ost->st->codec, ost->bitstream_filters);
01851                     }
01852                 }
01853             }
01854         }
01855     }
01856 
01857     return 0;
01858  fail_decode:
01859     return -1;
01860 }
01861 
01862 static void print_sdp(AVFormatContext **avc, int n)
01863 {
01864     char sdp[2048];
01865 
01866     avf_sdp_create(avc, n, sdp, sizeof(sdp));
01867     printf("SDP:\n%s\n", sdp);
01868     fflush(stdout);
01869 }
01870 
01871 static int copy_chapters(int infile, int outfile)
01872 {
01873     AVFormatContext *is = input_files[infile];
01874     AVFormatContext *os = output_files[outfile];
01875     int i;
01876 
01877     for (i = 0; i < is->nb_chapters; i++) {
01878         AVChapter *in_ch = is->chapters[i], *out_ch;
01879         int64_t ts_off   = av_rescale_q(start_time - input_files_ts_offset[infile],
01880                                       AV_TIME_BASE_Q, in_ch->time_base);
01881         int64_t rt       = (recording_time == INT64_MAX) ? INT64_MAX :
01882                            av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
01883 
01884 
01885         if (in_ch->end < ts_off)
01886             continue;
01887         if (rt != INT64_MAX && in_ch->start > rt + ts_off)
01888             break;
01889 
01890         out_ch = av_mallocz(sizeof(AVChapter));
01891         if (!out_ch)
01892             return AVERROR(ENOMEM);
01893 
01894         out_ch->id        = in_ch->id;
01895         out_ch->time_base = in_ch->time_base;
01896         out_ch->start     = FFMAX(0,  in_ch->start - ts_off);
01897         out_ch->end       = FFMIN(rt, in_ch->end   - ts_off);
01898 
01899         if (metadata_chapters_autocopy)
01900             av_metadata_copy(&out_ch->metadata, in_ch->metadata, 0);
01901 
01902         os->nb_chapters++;
01903         os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
01904         if (!os->chapters)
01905             return AVERROR(ENOMEM);
01906         os->chapters[os->nb_chapters - 1] = out_ch;
01907     }
01908     return 0;
01909 }
01910 
01911 static void parse_forced_key_frames(char *kf, AVOutputStream *ost,
01912                                     AVCodecContext *avctx)
01913 {
01914     char *p;
01915     int n = 1, i;
01916     int64_t t;
01917 
01918     for (p = kf; *p; p++)
01919         if (*p == ',')
01920             n++;
01921     ost->forced_kf_count = n;
01922     ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
01923     if (!ost->forced_kf_pts) {
01924         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
01925         ffmpeg_exit(1);
01926     }
01927     for (i = 0; i < n; i++) {
01928         p = i ? strchr(p, ',') + 1 : kf;
01929         t = parse_time_or_die("force_key_frames", p, 1);
01930         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
01931     }
01932 }
01933 
01934 /*
01935  * The following code is the main loop of the file converter
01936  */
01937 static int transcode(AVFormatContext **output_files,
01938                      int nb_output_files,
01939                      AVFormatContext **input_files,
01940                      int nb_input_files,
01941                      AVStreamMap *stream_maps, int nb_stream_maps)
01942 {
01943     int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
01944     AVFormatContext *is, *os;
01945     AVCodecContext *codec, *icodec;
01946     AVOutputStream *ost, **ost_table = NULL;
01947     AVInputStream *ist, **ist_table = NULL;
01948     AVInputFile *file_table;
01949     char error[1024];
01950     int key;
01951     int want_sdp = 1;
01952     uint8_t no_packet[MAX_FILES]={0};
01953     int no_packet_count=0;
01954 
01955     file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
01956     if (!file_table)
01957         goto fail;
01958 
01959     /* input stream init */
01960     j = 0;
01961     for(i=0;i<nb_input_files;i++) {
01962         is = input_files[i];
01963         file_table[i].ist_index = j;
01964         file_table[i].nb_streams = is->nb_streams;
01965         j += is->nb_streams;
01966     }
01967     nb_istreams = j;
01968 
01969     ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
01970     if (!ist_table)
01971         goto fail;
01972 
01973     for(i=0;i<nb_istreams;i++) {
01974         ist = av_mallocz(sizeof(AVInputStream));
01975         if (!ist)
01976             goto fail;
01977         ist_table[i] = ist;
01978     }
01979     j = 0;
01980     for(i=0;i<nb_input_files;i++) {
01981         is = input_files[i];
01982         for(k=0;k<is->nb_streams;k++) {
01983             ist = ist_table[j++];
01984             ist->st = is->streams[k];
01985             ist->file_index = i;
01986             ist->index = k;
01987             ist->discard = 1; /* the stream is discarded by default
01988                                  (changed later) */
01989 
01990             if (rate_emu) {
01991                 ist->start = av_gettime();
01992             }
01993         }
01994     }
01995 
01996     /* output stream init */
01997     nb_ostreams = 0;
01998     for(i=0;i<nb_output_files;i++) {
01999         os = output_files[i];
02000         if (!os->nb_streams && !(os->oformat->flags & AVFMT_NOSTREAMS)) {
02001             av_dump_format(output_files[i], i, output_files[i]->filename, 1);
02002             fprintf(stderr, "Output file #%d does not contain any stream\n", i);
02003             ret = AVERROR(EINVAL);
02004             goto fail;
02005         }
02006         nb_ostreams += os->nb_streams;
02007     }
02008     if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
02009         fprintf(stderr, "Number of stream maps must match number of output streams\n");
02010         ret = AVERROR(EINVAL);
02011         goto fail;
02012     }
02013 
02014     /* Sanity check the mapping args -- do the input files & streams exist? */
02015     for(i=0;i<nb_stream_maps;i++) {
02016         int fi = stream_maps[i].file_index;
02017         int si = stream_maps[i].stream_index;
02018 
02019         if (fi < 0 || fi > nb_input_files - 1 ||
02020             si < 0 || si > file_table[fi].nb_streams - 1) {
02021             fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
02022             ret = AVERROR(EINVAL);
02023             goto fail;
02024         }
02025         fi = stream_maps[i].sync_file_index;
02026         si = stream_maps[i].sync_stream_index;
02027         if (fi < 0 || fi > nb_input_files - 1 ||
02028             si < 0 || si > file_table[fi].nb_streams - 1) {
02029             fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
02030             ret = AVERROR(EINVAL);
02031             goto fail;
02032         }
02033     }
02034 
02035     ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
02036     if (!ost_table)
02037         goto fail;
02038     n = 0;
02039     for(k=0;k<nb_output_files;k++) {
02040         os = output_files[k];
02041         for(i=0;i<os->nb_streams;i++,n++) {
02042             int found;
02043             ost = ost_table[n] = output_streams_for_file[k][i];
02044             ost->st = os->streams[i];
02045             if (nb_stream_maps > 0) {
02046                 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
02047                     stream_maps[n].stream_index;
02048 
02049                 /* Sanity check that the stream types match */
02050                 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
02051                     int i= ost->file_index;
02052                     av_dump_format(output_files[i], i, output_files[i]->filename, 1);
02053                     fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
02054                         stream_maps[n].file_index, stream_maps[n].stream_index,
02055                         ost->file_index, ost->index);
02056                     ffmpeg_exit(1);
02057                 }
02058 
02059             } else {
02060                 int best_nb_frames=-1;
02061                 /* get corresponding input stream index : we select the first one with the right type */
02062                 found = 0;
02063                 for(j=0;j<nb_istreams;j++) {
02064                     int skip=0;
02065                     ist = ist_table[j];
02066                     if(opt_programid){
02067                         int pi,si;
02068                         AVFormatContext *f= input_files[ ist->file_index ];
02069                         skip=1;
02070                         for(pi=0; pi<f->nb_programs; pi++){
02071                             AVProgram *p= f->programs[pi];
02072                             if(p->id == opt_programid)
02073                                 for(si=0; si<p->nb_stream_indexes; si++){
02074                                     if(f->streams[ p->stream_index[si] ] == ist->st)
02075                                         skip=0;
02076                                 }
02077                         }
02078                     }
02079                     if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
02080                         ist->st->codec->codec_type == ost->st->codec->codec_type) {
02081                         if(best_nb_frames < ist->st->codec_info_nb_frames){
02082                             best_nb_frames= ist->st->codec_info_nb_frames;
02083                             ost->source_index = j;
02084                             found = 1;
02085                         }
02086                     }
02087                 }
02088 
02089                 if (!found) {
02090                     if(! opt_programid) {
02091                         /* try again and reuse existing stream */
02092                         for(j=0;j<nb_istreams;j++) {
02093                             ist = ist_table[j];
02094                             if (   ist->st->codec->codec_type == ost->st->codec->codec_type
02095                                 && ist->st->discard != AVDISCARD_ALL) {
02096                                 ost->source_index = j;
02097                                 found = 1;
02098                             }
02099                         }
02100                     }
02101                     if (!found) {
02102                         int i= ost->file_index;
02103                         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
02104                         fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
02105                                 ost->file_index, ost->index);
02106                         ffmpeg_exit(1);
02107                     }
02108                 }
02109             }
02110             ist = ist_table[ost->source_index];
02111             ist->discard = 0;
02112             ost->sync_ist = (nb_stream_maps > 0) ?
02113                 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
02114                          stream_maps[n].sync_stream_index] : ist;
02115         }
02116     }
02117 
02118     /* for each output stream, we compute the right encoding parameters */
02119     for(i=0;i<nb_ostreams;i++) {
02120         ost = ost_table[i];
02121         os = output_files[ost->file_index];
02122         ist = ist_table[ost->source_index];
02123 
02124         codec = ost->st->codec;
02125         icodec = ist->st->codec;
02126 
02127         if (metadata_streams_autocopy)
02128             av_metadata_copy(&ost->st->metadata, ist->st->metadata,
02129                              AV_METADATA_DONT_OVERWRITE);
02130 
02131         ost->st->disposition = ist->st->disposition;
02132         codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
02133         codec->chroma_sample_location = icodec->chroma_sample_location;
02134 
02135         if (ost->st->stream_copy) {
02136             uint64_t extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
02137 
02138             if (extra_size > INT_MAX)
02139                 goto fail;
02140 
02141             /* if stream_copy is selected, no need to decode or encode */
02142             codec->codec_id = icodec->codec_id;
02143             codec->codec_type = icodec->codec_type;
02144 
02145             if(!codec->codec_tag){
02146                 if(   !os->oformat->codec_tag
02147                    || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
02148                    || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
02149                     codec->codec_tag = icodec->codec_tag;
02150             }
02151 
02152             codec->bit_rate = icodec->bit_rate;
02153             codec->rc_max_rate    = icodec->rc_max_rate;
02154             codec->rc_buffer_size = icodec->rc_buffer_size;
02155             codec->extradata= av_mallocz(extra_size);
02156             if (!codec->extradata)
02157                 goto fail;
02158             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
02159             codec->extradata_size= icodec->extradata_size;
02160             if(!copy_tb && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/500){
02161                 codec->time_base = icodec->time_base;
02162                 codec->time_base.num *= icodec->ticks_per_frame;
02163                 av_reduce(&codec->time_base.num, &codec->time_base.den,
02164                           codec->time_base.num, codec->time_base.den, INT_MAX);
02165             }else
02166                 codec->time_base = ist->st->time_base;
02167             switch(codec->codec_type) {
02168             case AVMEDIA_TYPE_AUDIO:
02169                 if(audio_volume != 256) {
02170                     fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
02171                     ffmpeg_exit(1);
02172                 }
02173                 codec->channel_layout = icodec->channel_layout;
02174                 codec->sample_rate = icodec->sample_rate;
02175                 codec->channels = icodec->channels;
02176                 codec->frame_size = icodec->frame_size;
02177                 codec->block_align= icodec->block_align;
02178                 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
02179                     codec->block_align= 0;
02180                 if(codec->codec_id == CODEC_ID_AC3)
02181                     codec->block_align= 0;
02182                 break;
02183             case AVMEDIA_TYPE_VIDEO:
02184                 codec->pix_fmt = icodec->pix_fmt;
02185                 codec->width = icodec->width;
02186                 codec->height = icodec->height;
02187                 codec->has_b_frames = icodec->has_b_frames;
02188                 break;
02189             case AVMEDIA_TYPE_SUBTITLE:
02190                 codec->width = icodec->width;
02191                 codec->height = icodec->height;
02192                 break;
02193             default:
02194                 abort();
02195             }
02196         } else {
02197             switch(codec->codec_type) {
02198             case AVMEDIA_TYPE_AUDIO:
02199                 ost->fifo= av_fifo_alloc(1024);
02200                 if(!ost->fifo)
02201                     goto fail;
02202                 ost->reformat_pair = MAKE_SFMT_PAIR(AV_SAMPLE_FMT_NONE,AV_SAMPLE_FMT_NONE);
02203                 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
02204                 icodec->request_channels = codec->channels;
02205                 ist->decoding_needed = 1;
02206                 ost->encoding_needed = 1;
02207                 ost->resample_sample_fmt  = icodec->sample_fmt;
02208                 ost->resample_sample_rate = icodec->sample_rate;
02209                 ost->resample_channels    = icodec->channels;
02210                 break;
02211             case AVMEDIA_TYPE_VIDEO:
02212                 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
02213                     fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
02214                     ffmpeg_exit(1);
02215                 }
02216                 ost->video_resample = (codec->width != icodec->width   ||
02217                                        codec->height != icodec->height ||
02218                         (codec->pix_fmt != icodec->pix_fmt));
02219                 if (ost->video_resample) {
02220 #if !CONFIG_AVFILTER
02221                     avcodec_get_frame_defaults(&ost->pict_tmp);
02222                     if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
02223                                          codec->width, codec->height)) {
02224                         fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
02225                         ffmpeg_exit(1);
02226                     }
02227                     sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
02228                     ost->img_resample_ctx = sws_getContext(
02229                         icodec->width,
02230                         icodec->height,
02231                             icodec->pix_fmt,
02232                             codec->width,
02233                             codec->height,
02234                             codec->pix_fmt,
02235                             sws_flags, NULL, NULL, NULL);
02236                     if (ost->img_resample_ctx == NULL) {
02237                         fprintf(stderr, "Cannot get resampling context\n");
02238                         ffmpeg_exit(1);
02239                     }
02240 
02241                     ost->original_height = icodec->height;
02242                     ost->original_width  = icodec->width;
02243 #endif
02244                     codec->bits_per_raw_sample= 0;
02245                 }
02246                 ost->resample_height = icodec->height;
02247                 ost->resample_width  = icodec->width;
02248                 ost->resample_pix_fmt= icodec->pix_fmt;
02249                 ost->encoding_needed = 1;
02250                 ist->decoding_needed = 1;
02251 
02252 #if CONFIG_AVFILTER
02253                 if (configure_filters(ist, ost)) {
02254                     fprintf(stderr, "Error opening filters!\n");
02255                     exit(1);
02256                 }
02257 #endif
02258                 break;
02259             case AVMEDIA_TYPE_SUBTITLE:
02260                 ost->encoding_needed = 1;
02261                 ist->decoding_needed = 1;
02262                 break;
02263             default:
02264                 abort();
02265                 break;
02266             }
02267             /* two pass mode */
02268             if (ost->encoding_needed &&
02269                 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
02270                 char logfilename[1024];
02271                 FILE *f;
02272 
02273                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
02274                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
02275                          i);
02276                 if (codec->flags & CODEC_FLAG_PASS1) {
02277                     f = fopen(logfilename, "wb");
02278                     if (!f) {
02279                         fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
02280                         ffmpeg_exit(1);
02281                     }
02282                     ost->logfile = f;
02283                 } else {
02284                     char  *logbuffer;
02285                     size_t logbuffer_size;
02286                     if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
02287                         fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
02288                         ffmpeg_exit(1);
02289                     }
02290                     codec->stats_in = logbuffer;
02291                 }
02292             }
02293         }
02294         if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
02295             int size= codec->width * codec->height;
02296             bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
02297         }
02298     }
02299 
02300     if (!bit_buffer)
02301         bit_buffer = av_malloc(bit_buffer_size);
02302     if (!bit_buffer) {
02303         fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
02304                 bit_buffer_size);
02305         ret = AVERROR(ENOMEM);
02306         goto fail;
02307     }
02308 
02309     /* open each encoder */
02310     for(i=0;i<nb_ostreams;i++) {
02311         ost = ost_table[i];
02312         if (ost->encoding_needed) {
02313             AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
02314             AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
02315             if (!codec)
02316                 codec = avcodec_find_encoder(ost->st->codec->codec_id);
02317             if (!codec) {
02318                 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
02319                          ost->st->codec->codec_id, ost->file_index, ost->index);
02320                 ret = AVERROR(EINVAL);
02321                 goto dump_format;
02322             }
02323             if (dec->subtitle_header) {
02324                 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
02325                 if (!ost->st->codec->subtitle_header) {
02326                     ret = AVERROR(ENOMEM);
02327                     goto dump_format;
02328                 }
02329                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
02330                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
02331             }
02332             if (avcodec_open(ost->st->codec, codec) < 0) {
02333                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
02334                         ost->file_index, ost->index);
02335                 ret = AVERROR(EINVAL);
02336                 goto dump_format;
02337             }
02338             extra_size += ost->st->codec->extradata_size;
02339         }
02340     }
02341 
02342     /* open each decoder */
02343     for(i=0;i<nb_istreams;i++) {
02344         ist = ist_table[i];
02345         if (ist->decoding_needed) {
02346             AVCodec *codec = i < nb_input_codecs ? input_codecs[i] : NULL;
02347             if (!codec)
02348                 codec = avcodec_find_decoder(ist->st->codec->codec_id);
02349             if (!codec) {
02350                 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
02351                         ist->st->codec->codec_id, ist->file_index, ist->index);
02352                 ret = AVERROR(EINVAL);
02353                 goto dump_format;
02354             }
02355             if (avcodec_open(ist->st->codec, codec) < 0) {
02356                 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
02357                         ist->file_index, ist->index);
02358                 ret = AVERROR(EINVAL);
02359                 goto dump_format;
02360             }
02361             //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
02362             //    ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
02363         }
02364     }
02365 
02366     /* init pts */
02367     for(i=0;i<nb_istreams;i++) {
02368         AVStream *st;
02369         ist = ist_table[i];
02370         st= ist->st;
02371         ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
02372         ist->next_pts = AV_NOPTS_VALUE;
02373         ist->is_start = 1;
02374     }
02375 
02376     /* set meta data information from input file if required */
02377     for (i=0;i<nb_meta_data_maps;i++) {
02378         AVFormatContext *files[2];
02379         AVMetadata      **meta[2];
02380         int j;
02381 
02382 #define METADATA_CHECK_INDEX(index, nb_elems, desc)\
02383         if ((index) < 0 || (index) >= (nb_elems)) {\
02384             snprintf(error, sizeof(error), "Invalid %s index %d while processing metadata maps\n",\
02385                      (desc), (index));\
02386             ret = AVERROR(EINVAL);\
02387             goto dump_format;\
02388         }
02389 
02390         int out_file_index = meta_data_maps[i][0].file;
02391         int in_file_index = meta_data_maps[i][1].file;
02392         if (in_file_index < 0 || out_file_index < 0)
02393             continue;
02394         METADATA_CHECK_INDEX(out_file_index, nb_output_files, "output file")
02395         METADATA_CHECK_INDEX(in_file_index, nb_input_files, "input file")
02396 
02397         files[0] = output_files[out_file_index];
02398         files[1] = input_files[in_file_index];
02399 
02400         for (j = 0; j < 2; j++) {
02401             AVMetaDataMap *map = &meta_data_maps[i][j];
02402 
02403             switch (map->type) {
02404             case 'g':
02405                 meta[j] = &files[j]->metadata;
02406                 break;
02407             case 's':
02408                 METADATA_CHECK_INDEX(map->index, files[j]->nb_streams, "stream")
02409                 meta[j] = &files[j]->streams[map->index]->metadata;
02410                 break;
02411             case 'c':
02412                 METADATA_CHECK_INDEX(map->index, files[j]->nb_chapters, "chapter")
02413                 meta[j] = &files[j]->chapters[map->index]->metadata;
02414                 break;
02415             case 'p':
02416                 METADATA_CHECK_INDEX(map->index, files[j]->nb_programs, "program")
02417                 meta[j] = &files[j]->programs[map->index]->metadata;
02418                 break;
02419             }
02420         }
02421 
02422         av_metadata_copy(meta[0], *meta[1], AV_METADATA_DONT_OVERWRITE);
02423     }
02424 
02425     /* copy global metadata by default */
02426     if (metadata_global_autocopy) {
02427 
02428         for (i = 0; i < nb_output_files; i++)
02429             av_metadata_copy(&output_files[i]->metadata, input_files[0]->metadata,
02430                              AV_METADATA_DONT_OVERWRITE);
02431     }
02432 
02433     /* copy chapters according to chapter maps */
02434     for (i = 0; i < nb_chapter_maps; i++) {
02435         int infile  = chapter_maps[i].in_file;
02436         int outfile = chapter_maps[i].out_file;
02437 
02438         if (infile < 0 || outfile < 0)
02439             continue;
02440         if (infile >= nb_input_files) {
02441             snprintf(error, sizeof(error), "Invalid input file index %d in chapter mapping.\n", infile);
02442             ret = AVERROR(EINVAL);
02443             goto dump_format;
02444         }
02445         if (outfile >= nb_output_files) {
02446             snprintf(error, sizeof(error), "Invalid output file index %d in chapter mapping.\n",outfile);
02447             ret = AVERROR(EINVAL);
02448             goto dump_format;
02449         }
02450         copy_chapters(infile, outfile);
02451     }
02452 
02453     /* copy chapters from the first input file that has them*/
02454     if (!nb_chapter_maps)
02455         for (i = 0; i < nb_input_files; i++) {
02456             if (!input_files[i]->nb_chapters)
02457                 continue;
02458 
02459             for (j = 0; j < nb_output_files; j++)
02460                 if ((ret = copy_chapters(i, j)) < 0)
02461                     goto dump_format;
02462             break;
02463         }
02464 
02465     /* open files and write file headers */
02466     for(i=0;i<nb_output_files;i++) {
02467         os = output_files[i];
02468         if (av_write_header(os) < 0) {
02469             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
02470             ret = AVERROR(EINVAL);
02471             goto dump_format;
02472         }
02473         if (strcmp(output_files[i]->oformat->name, "rtp")) {
02474             want_sdp = 0;
02475         }
02476     }
02477 
02478  dump_format:
02479     /* dump the file output parameters - cannot be done before in case
02480        of stream copy */
02481     for(i=0;i<nb_output_files;i++) {
02482         av_dump_format(output_files[i], i, output_files[i]->filename, 1);
02483     }
02484 
02485     /* dump the stream mapping */
02486     if (verbose >= 0) {
02487         fprintf(stderr, "Stream mapping:\n");
02488         for(i=0;i<nb_ostreams;i++) {
02489             ost = ost_table[i];
02490             fprintf(stderr, "  Stream #%d.%d -> #%d.%d",
02491                     ist_table[ost->source_index]->file_index,
02492                     ist_table[ost->source_index]->index,
02493                     ost->file_index,
02494                     ost->index);
02495             if (ost->sync_ist != ist_table[ost->source_index])
02496                 fprintf(stderr, " [sync #%d.%d]",
02497                         ost->sync_ist->file_index,
02498                         ost->sync_ist->index);
02499             fprintf(stderr, "\n");
02500         }
02501     }
02502 
02503     if (ret) {
02504         fprintf(stderr, "%s\n", error);
02505         goto fail;
02506     }
02507 
02508     if (want_sdp) {
02509         print_sdp(output_files, nb_output_files);
02510     }
02511 
02512     if (!using_stdin) {
02513         if(verbose >= 0)
02514             fprintf(stderr, "Press [q] to stop encoding\n");
02515         url_set_interrupt_cb(decode_interrupt_cb);
02516     }
02517     term_init();
02518 
02519     timer_start = av_gettime();
02520 
02521     for(; received_sigterm == 0;) {
02522         int file_index, ist_index;
02523         AVPacket pkt;
02524         double ipts_min;
02525         double opts_min;
02526 
02527     redo:
02528         ipts_min= 1e100;
02529         opts_min= 1e100;
02530         /* if 'q' pressed, exits */
02531         if (!using_stdin) {
02532             if (q_pressed)
02533                 break;
02534             /* read_key() returns 0 on EOF */
02535             key = read_key();
02536             if (key == 'q')
02537                 break;
02538         }
02539 
02540         /* select the stream that we must read now by looking at the
02541            smallest output pts */
02542         file_index = -1;
02543         for(i=0;i<nb_ostreams;i++) {
02544             double ipts, opts;
02545             ost = ost_table[i];
02546             os = output_files[ost->file_index];
02547             ist = ist_table[ost->source_index];
02548             if(ist->is_past_recording_time || no_packet[ist->file_index])
02549                 continue;
02550                 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
02551             ipts = (double)ist->pts;
02552             if (!file_table[ist->file_index].eof_reached){
02553                 if(ipts < ipts_min) {
02554                     ipts_min = ipts;
02555                     if(input_sync ) file_index = ist->file_index;
02556                 }
02557                 if(opts < opts_min) {
02558                     opts_min = opts;
02559                     if(!input_sync) file_index = ist->file_index;
02560                 }
02561             }
02562             if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
02563                 file_index= -1;
02564                 break;
02565             }
02566         }
02567         /* if none, if is finished */
02568         if (file_index < 0) {
02569             if(no_packet_count){
02570                 no_packet_count=0;
02571                 memset(no_packet, 0, sizeof(no_packet));
02572                 usleep(10000);
02573                 continue;
02574             }
02575             break;
02576         }
02577 
02578         /* finish if limit size exhausted */
02579         if (limit_filesize != 0 && limit_filesize <= avio_tell(output_files[0]->pb))
02580             break;
02581 
02582         /* read a frame from it and output it in the fifo */
02583         is = input_files[file_index];
02584         ret= av_read_frame(is, &pkt);
02585         if(ret == AVERROR(EAGAIN)){
02586             no_packet[file_index]=1;
02587             no_packet_count++;
02588             continue;
02589         }
02590         if (ret < 0) {
02591             file_table[file_index].eof_reached = 1;
02592             if (opt_shortest)
02593                 break;
02594             else
02595                 continue;
02596         }
02597 
02598         no_packet_count=0;
02599         memset(no_packet, 0, sizeof(no_packet));
02600 
02601         if (do_pkt_dump) {
02602             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
02603                              is->streams[pkt.stream_index]);
02604         }
02605         /* the following test is needed in case new streams appear
02606            dynamically in stream : we ignore them */
02607         if (pkt.stream_index >= file_table[file_index].nb_streams)
02608             goto discard_packet;
02609         ist_index = file_table[file_index].ist_index + pkt.stream_index;
02610         ist = ist_table[ist_index];
02611         if (ist->discard)
02612             goto discard_packet;
02613 
02614         if (pkt.dts != AV_NOPTS_VALUE)
02615             pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
02616         if (pkt.pts != AV_NOPTS_VALUE)
02617             pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
02618 
02619         if (pkt.stream_index < nb_input_files_ts_scale[file_index]
02620             && input_files_ts_scale[file_index][pkt.stream_index]){
02621             if(pkt.pts != AV_NOPTS_VALUE)
02622                 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
02623             if(pkt.dts != AV_NOPTS_VALUE)
02624                 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
02625         }
02626 
02627 //        fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files_ts_offset[ist->file_index], ist->st->codec->codec_type);
02628         if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
02629             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
02630             int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
02631             int64_t delta= pkt_dts - ist->next_pts;
02632             if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
02633                 input_files_ts_offset[ist->file_index]-= delta;
02634                 if (verbose > 2)
02635                     fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
02636                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
02637                 if(pkt.pts != AV_NOPTS_VALUE)
02638                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
02639             }
02640         }
02641 
02642         /* finish if recording time exhausted */
02643         if (recording_time != INT64_MAX &&
02644             av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
02645             ist->is_past_recording_time = 1;
02646             goto discard_packet;
02647         }
02648 
02649         //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
02650         if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
02651 
02652             if (verbose >= 0)
02653                 fprintf(stderr, "Error while decoding stream #%d.%d\n",
02654                         ist->file_index, ist->index);
02655             if (exit_on_error)
02656                 ffmpeg_exit(1);
02657             av_free_packet(&pkt);
02658             goto redo;
02659         }
02660 
02661     discard_packet:
02662         av_free_packet(&pkt);
02663 
02664         /* dump report by using the output first video and audio streams */
02665         print_report(output_files, ost_table, nb_ostreams, 0);
02666     }
02667 
02668     /* at the end of stream, we must flush the decoder buffers */
02669     for(i=0;i<nb_istreams;i++) {
02670         ist = ist_table[i];
02671         if (ist->decoding_needed) {
02672             output_packet(ist, i, ost_table, nb_ostreams, NULL);
02673         }
02674     }
02675 
02676     term_exit();
02677 
02678     /* write the trailer if needed and close file */
02679     for(i=0;i<nb_output_files;i++) {
02680         os = output_files[i];
02681         av_write_trailer(os);
02682     }
02683 
02684     /* dump report by using the first video and audio streams */
02685     print_report(output_files, ost_table, nb_ostreams, 1);
02686 
02687     /* close each encoder */
02688     for(i=0;i<nb_ostreams;i++) {
02689         ost = ost_table[i];
02690         if (ost->encoding_needed) {
02691             av_freep(&ost->st->codec->stats_in);
02692             avcodec_close(ost->st->codec);
02693         }
02694 #if CONFIG_AVFILTER
02695         avfilter_graph_free(&ost->graph);
02696 #endif
02697     }
02698 
02699     /* close each decoder */
02700     for(i=0;i<nb_istreams;i++) {
02701         ist = ist_table[i];
02702         if (ist->decoding_needed) {
02703             avcodec_close(ist->st->codec);
02704         }
02705     }
02706 
02707     /* finished ! */
02708     ret = 0;
02709 
02710  fail:
02711     av_freep(&bit_buffer);
02712     av_free(file_table);
02713 
02714     if (ist_table) {
02715         for(i=0;i<nb_istreams;i++) {
02716             ist = ist_table[i];
02717             av_free(ist);
02718         }
02719         av_free(ist_table);
02720     }
02721     if (ost_table) {
02722         for(i=0;i<nb_ostreams;i++) {
02723             ost = ost_table[i];
02724             if (ost) {
02725                 if (ost->st->stream_copy)
02726                     av_freep(&ost->st->codec->extradata);
02727                 if (ost->logfile) {
02728                     fclose(ost->logfile);
02729                     ost->logfile = NULL;
02730                 }
02731                 av_fifo_free(ost->fifo); /* works even if fifo is not
02732                                              initialized but set to zero */
02733                 av_freep(&ost->st->codec->subtitle_header);
02734                 av_free(ost->pict_tmp.data[0]);
02735                 av_free(ost->forced_kf_pts);
02736                 if (ost->video_resample)
02737                     sws_freeContext(ost->img_resample_ctx);
02738                 if (ost->resample)
02739                     audio_resample_close(ost->resample);
02740                 if (ost->reformat_ctx)
02741                     av_audio_convert_free(ost->reformat_ctx);
02742                 av_free(ost);
02743             }
02744         }
02745         av_free(ost_table);
02746     }
02747     return ret;
02748 }
02749 
02750 static void opt_format(const char *arg)
02751 {
02752     last_asked_format = arg;
02753 }
02754 
02755 static void opt_video_rc_override_string(const char *arg)
02756 {
02757     video_rc_override_string = arg;
02758 }
02759 
02760 static int opt_me_threshold(const char *opt, const char *arg)
02761 {
02762     me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
02763     return 0;
02764 }
02765 
02766 static int opt_verbose(const char *opt, const char *arg)
02767 {
02768     verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
02769     return 0;
02770 }
02771 
02772 static int opt_frame_rate(const char *opt, const char *arg)
02773 {
02774     if (av_parse_video_rate(&frame_rate, arg) < 0) {
02775         fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
02776         ffmpeg_exit(1);
02777     }
02778     return 0;
02779 }
02780 
02781 static int opt_bitrate(const char *opt, const char *arg)
02782 {
02783     int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
02784 
02785     opt_default(opt, arg);
02786 
02787     if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
02788         fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
02789 
02790     return 0;
02791 }
02792 
02793 static int opt_frame_crop(const char *opt, const char *arg)
02794 {
02795     fprintf(stderr, "Option '%s' has been removed, use the crop filter instead\n", opt);
02796     return AVERROR(EINVAL);
02797 }
02798 
02799 static void opt_frame_size(const char *arg)
02800 {
02801     if (av_parse_video_size(&frame_width, &frame_height, arg) < 0) {
02802         fprintf(stderr, "Incorrect frame size\n");
02803         ffmpeg_exit(1);
02804     }
02805 }
02806 
02807 static int opt_pad(const char *opt, const char *arg) {
02808     fprintf(stderr, "Option '%s' has been removed, use the pad filter instead\n", opt);
02809     return -1;
02810 }
02811 
02812 static void opt_frame_pix_fmt(const char *arg)
02813 {
02814     if (strcmp(arg, "list")) {
02815         frame_pix_fmt = av_get_pix_fmt(arg);
02816         if (frame_pix_fmt == PIX_FMT_NONE) {
02817             fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
02818             ffmpeg_exit(1);
02819         }
02820     } else {
02821         show_pix_fmts();
02822         ffmpeg_exit(0);
02823     }
02824 }
02825 
02826 static void opt_frame_aspect_ratio(const char *arg)
02827 {
02828     int x = 0, y = 0;
02829     double ar = 0;
02830     const char *p;
02831     char *end;
02832 
02833     p = strchr(arg, ':');
02834     if (p) {
02835         x = strtol(arg, &end, 10);
02836         if (end == p)
02837             y = strtol(end+1, &end, 10);
02838         if (x > 0 && y > 0)
02839             ar = (double)x / (double)y;
02840     } else
02841         ar = strtod(arg, NULL);
02842 
02843     if (!ar) {
02844         fprintf(stderr, "Incorrect aspect ratio specification.\n");
02845         ffmpeg_exit(1);
02846     }
02847     frame_aspect_ratio = ar;
02848 }
02849 
02850 static int opt_metadata(const char *opt, const char *arg)
02851 {
02852     char *mid= strchr(arg, '=');
02853 
02854     if(!mid){
02855         fprintf(stderr, "Missing =\n");
02856         ffmpeg_exit(1);
02857     }
02858     *mid++= 0;
02859 
02860     av_metadata_set2(&metadata, arg, mid, 0);
02861 
02862     return 0;
02863 }
02864 
02865 static void opt_qscale(const char *arg)
02866 {
02867     video_qscale = atof(arg);
02868     if (video_qscale <= 0 ||
02869         video_qscale > 255) {
02870         fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
02871         ffmpeg_exit(1);
02872     }
02873 }
02874 
02875 static void opt_top_field_first(const char *arg)
02876 {
02877     top_field_first= atoi(arg);
02878 }
02879 
02880 static int opt_thread_count(const char *opt, const char *arg)
02881 {
02882     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
02883 #if !HAVE_THREADS
02884     if (verbose >= 0)
02885         fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
02886 #endif
02887     return 0;
02888 }
02889 
02890 static void opt_audio_sample_fmt(const char *arg)
02891 {
02892     if (strcmp(arg, "list")) {
02893         audio_sample_fmt = av_get_sample_fmt(arg);
02894         if (audio_sample_fmt == AV_SAMPLE_FMT_NONE) {
02895             av_log(NULL, AV_LOG_ERROR, "Invalid sample format '%s'\n", arg);
02896             ffmpeg_exit(1);
02897         }
02898     } else {
02899         list_fmts(av_get_sample_fmt_string, AV_SAMPLE_FMT_NB);
02900         ffmpeg_exit(0);
02901     }
02902 }
02903 
02904 static int opt_audio_rate(const char *opt, const char *arg)
02905 {
02906     audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
02907     return 0;
02908 }
02909 
02910 static int opt_audio_channels(const char *opt, const char *arg)
02911 {
02912     audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
02913     return 0;
02914 }
02915 
02916 static void opt_video_channel(const char *arg)
02917 {
02918     video_channel = strtol(arg, NULL, 0);
02919 }
02920 
02921 static void opt_video_standard(const char *arg)
02922 {
02923     video_standard = av_strdup(arg);
02924 }
02925 
02926 static void opt_codec(int *pstream_copy, char **pcodec_name,
02927                       int codec_type, const char *arg)
02928 {
02929     av_freep(pcodec_name);
02930     if (!strcmp(arg, "copy")) {
02931         *pstream_copy = 1;
02932     } else {
02933         *pcodec_name = av_strdup(arg);
02934     }
02935 }
02936 
02937 static void opt_audio_codec(const char *arg)
02938 {
02939     opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
02940 }
02941 
02942 static void opt_video_codec(const char *arg)
02943 {
02944     opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
02945 }
02946 
02947 static void opt_subtitle_codec(const char *arg)
02948 {
02949     opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
02950 }
02951 
02952 static int opt_codec_tag(const char *opt, const char *arg)
02953 {
02954     char *tail;
02955     uint32_t *codec_tag;
02956 
02957     codec_tag = !strcmp(opt, "atag") ? &audio_codec_tag :
02958                 !