avconv.h

   1 /*
   2  * This file is part of Libav.
   3  *
   4  * Libav is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * Libav is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with Libav; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #ifndef AVCONV_H
  20 #define AVCONV_H
  21
  22 #include "config.h"
  23
  24 #include <stdint.h>
  25 #include <stdio.h>
  26
  27 #if HAVE_PTHREADS
  28 #include <pthread.h>
  29 #endif
  30
  31 #include "cmdutils.h"
  32
  33 #include "libavformat/avformat.h"
  34 #include "libavformat/avio.h"
  35
  36 #include "libavcodec/avcodec.h"
  37
  38 #include "libavfilter/avfilter.h"
  39
  40 #include "libavutil/avutil.h"
  41 #include "libavutil/dict.h"
  42 #include "libavutil/fifo.h"
  43 #include "libavutil/pixfmt.h"
  44 #include "libavutil/rational.h"
  45
  46 #define VSYNC_AUTO       -1
  47 #define VSYNC_PASSTHROUGH 0
  48 #define VSYNC_CFR         1
  49 #define VSYNC_VFR         2
  50
  51 /* select an input stream for an output stream */
  52 typedef struct StreamMap {
  53     int disabled;           /* 1 is this mapping is disabled by a negative map */
  54     int file_index;
  55     int stream_index;
  56     int sync_file_index;
  57     int sync_stream_index;
  58     char *linklabel;       /* name of an output link, for mapping lavfi outputs */
  59 } StreamMap;
  60
  61 /* select an input file for an output file */
  62 typedef struct MetadataMap {
  63     int  file;      // file index
  64     char type;      // type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
  65     int  index;     // stream/chapter/program number
  66 } MetadataMap;
  67
  68 typedef struct OptionsContext {
  69     OptionGroup *g;
  70
  71     /* input/output options */
  72     int64_t start_time;
  73     const char *format;
  74
  75     SpecifierOpt *codec_names;
  76     int        nb_codec_names;
  77     SpecifierOpt *audio_channels;
  78     int        nb_audio_channels;
  79     SpecifierOpt *audio_sample_rate;
  80     int        nb_audio_sample_rate;
  81     SpecifierOpt *frame_rates;
  82     int        nb_frame_rates;
  83     SpecifierOpt *frame_sizes;
  84     int        nb_frame_sizes;
  85     SpecifierOpt *frame_pix_fmts;
  86     int        nb_frame_pix_fmts;
  87
  88     /* input options */
  89     int64_t input_ts_offset;
  90     int rate_emu;
  91     int accurate_seek;
  92
  93     SpecifierOpt *ts_scale;
  94     int        nb_ts_scale;
  95     SpecifierOpt *dump_attachment;
  96     int        nb_dump_attachment;
  97
  98     /* output options */
  99     StreamMap *stream_maps;
 100     int     nb_stream_maps;
 101     /* first item specifies output metadata, second is input */
 102     MetadataMap (*meta_data_maps)[2];
 103     int nb_meta_data_maps;
 104     int metadata_global_manual;
 105     int metadata_streams_manual;
 106     int metadata_chapters_manual;
 107     const char **attachments;
 108     int       nb_attachments;
 109
 110     int chapters_input_file;
 111
 112     int64_t recording_time;
 113     uint64_t limit_filesize;
 114     float mux_preload;
 115     float mux_max_delay;
 116     int shortest;
 117
 118     int video_disable;
 119     int audio_disable;
 120     int subtitle_disable;
 121     int data_disable;
 122
 123     /* indexed by output file stream index */
 124     int   *streamid_map;
 125     int nb_streamid_map;
 126
 127     SpecifierOpt *metadata;
 128     int        nb_metadata;
 129     SpecifierOpt *max_frames;
 130     int        nb_max_frames;
 131     SpecifierOpt *bitstream_filters;
 132     int        nb_bitstream_filters;
 133     SpecifierOpt *codec_tags;
 134     int        nb_codec_tags;
 135     SpecifierOpt *sample_fmts;
 136     int        nb_sample_fmts;
 137     SpecifierOpt *qscale;
 138     int        nb_qscale;
 139     SpecifierOpt *forced_key_frames;
 140     int        nb_forced_key_frames;
 141     SpecifierOpt *force_fps;
 142     int        nb_force_fps;
 143     SpecifierOpt *frame_aspect_ratios;
 144     int        nb_frame_aspect_ratios;
 145     SpecifierOpt *rc_overrides;
 146     int        nb_rc_overrides;
 147     SpecifierOpt *intra_matrices;
 148     int        nb_intra_matrices;
 149     SpecifierOpt *inter_matrices;
 150     int        nb_inter_matrices;
 151     SpecifierOpt *top_field_first;
 152     int        nb_top_field_first;
 153     SpecifierOpt *metadata_map;
 154     int        nb_metadata_map;
 155     SpecifierOpt *presets;
 156     int        nb_presets;
 157     SpecifierOpt *copy_initial_nonkeyframes;
 158     int        nb_copy_initial_nonkeyframes;
 159     SpecifierOpt *filters;
 160     int        nb_filters;
 161     SpecifierOpt *filter_scripts;
 162     int        nb_filter_scripts;
 163     SpecifierOpt *pass;
 164     int        nb_pass;
 165     SpecifierOpt *passlogfiles;
 166     int        nb_passlogfiles;
 167 } OptionsContext;
 168
 169 typedef struct InputFilter {
 170     AVFilterContext    *filter;
 171     struct InputStream *ist;
 172     struct FilterGraph *graph;
 173     uint8_t            *name;
 174 } InputFilter;
 175
 176 typedef struct OutputFilter {
 177     AVFilterContext     *filter;
 178     struct OutputStream *ost;
 179     struct FilterGraph  *graph;
 180     uint8_t             *name;
 181
 182     /* temporary storage until stream maps are processed */
 183     AVFilterInOut       *out_tmp;
 184 } OutputFilter;
 185
 186 typedef struct FilterGraph {
 187     int            index;
 188     const char    *graph_desc;
 189
 190     AVFilterGraph *graph;
 191
 192     InputFilter   **inputs;
 193     int          nb_inputs;
 194     OutputFilter **outputs;
 195     int         nb_outputs;
 196 } FilterGraph;
 197
 198 typedef struct InputStream {
 199     int file_index;
 200     AVStream *st;
 201     int discard;             /* true if stream data should be discarded */
 202     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
 203     AVCodec *dec;
 204     AVFrame *decoded_frame;
 205     AVFrame *filter_frame; /* a ref of decoded_frame, to be sent to filters */
 206
 207     int64_t       start;     /* time when read started */
 208     /* predicted dts of the next packet read for this stream or (when there are
 209      * several frames in a packet) of the next frame in current packet */
 210     int64_t       next_dts;
 211     /* dts of the last packet read for this stream */
 212     int64_t       last_dts;
 213     PtsCorrectionContext pts_ctx;
 214     double ts_scale;
 215     int is_start;            /* is 1 at the start and after a discontinuity */
 216     int showed_multi_packet_warning;
 217     AVDictionary *opts;
 218     AVRational framerate;               /* framerate forced with -r */
 219
 220     int resample_height;
 221     int resample_width;
 222     int resample_pix_fmt;
 223
 224     int      resample_sample_fmt;
 225     int      resample_sample_rate;
 226     int      resample_channels;
 227     uint64_t resample_channel_layout;
 228
 229     /* decoded data from this stream goes into all those filters
 230      * currently video and audio only */
 231     InputFilter **filters;
 232     int        nb_filters;
 233 } InputStream;
 234
 235 typedef struct InputFile {
 236     AVFormatContext *ctx;
 237     int eof_reached;      /* true if eof reached */
 238     int eagain;           /* true if last read attempt returned EAGAIN */
 239     int ist_index;        /* index of first stream in ist_table */
 240     int64_t ts_offset;
 241     int64_t start_time;   /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */
 242     int64_t recording_time;
 243     int nb_streams;       /* number of stream that avconv is aware of; may be different
 244                              from ctx.nb_streams if new streams appear during av_read_frame() */
 245     int rate_emu;
 246     int accurate_seek;
 247
 248 #if HAVE_PTHREADS
 249     pthread_t thread;           /* thread reading from this file */
 250     int finished;               /* the thread has exited */
 251     int joined;                 /* the thread has been joined */
 252     pthread_mutex_t fifo_lock;  /* lock for access to fifo */
 253     pthread_cond_t  fifo_cond;  /* the main thread will signal on this cond after reading from fifo */
 254     AVFifoBuffer *fifo;         /* demuxed packets are stored here; freed by the main thread */
 255 #endif
 256 } InputFile;
 257
 258 typedef struct OutputStream {
 259     int file_index;          /* file index */
 260     int index;               /* stream index in the output file */
 261     int source_index;        /* InputStream index */
 262     AVStream *st;            /* stream in the output file */
 263     int encoding_needed;     /* true if encoding needed for this stream */
 264     int frame_number;
 265     /* input pts and corresponding output pts
 266        for A/V sync */
 267     // double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
 268     struct InputStream *sync_ist; /* input stream to sync against */
 269     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
 270     /* pts of the first frame encoded for this stream, used for limiting
 271      * recording time */
 272     int64_t first_pts;
 273     /* dts of the last packet sent to the muxer */
 274     int64_t last_mux_dts;
 275     AVBitStreamFilterContext *bitstream_filters;
 276     AVCodec *enc;
 277     int64_t max_frames;
 278     AVFrame *filtered_frame;
 279
 280     /* video only */
 281     AVRational frame_rate;
 282     int force_fps;
 283     int top_field_first;
 284
 285     float frame_aspect_ratio;
 286
 287     /* forced key frames */
 288     int64_t *forced_kf_pts;
 289     int forced_kf_count;
 290     int forced_kf_index;
 291     char *forced_keyframes;
 292
 293     char *logfile_prefix;
 294     FILE *logfile;
 295
 296     OutputFilter *filter;
 297     char *avfilter;
 298
 299     int64_t sws_flags;
 300     AVDictionary *opts;
 301     AVDictionary *resample_opts;
 302     int finished;        /* no more packets should be written for this stream */
 303     int stream_copy;
 304     const char *attachment_filename;
 305     int copy_initial_nonkeyframes;
 306
 307     enum AVPixelFormat pix_fmts[2];
 308
 309     AVCodecParserContext *parser;
 310 } OutputStream;
 311
 312 typedef struct OutputFile {
 313     AVFormatContext *ctx;
 314     AVDictionary *opts;
 315     int ost_index;       /* index of the first stream in output_streams */
 316     int64_t recording_time; /* desired length of the resulting file in microseconds */
 317     int64_t start_time;     /* start time in microseconds */
 318     uint64_t limit_filesize;
 319
 320     int shortest;
 321 } OutputFile;
 322
 323 extern InputStream **input_streams;
 324 extern int        nb_input_streams;
 325 extern InputFile   **input_files;
 326 extern int        nb_input_files;
 327
 328 extern OutputStream **output_streams;
 329 extern int         nb_output_streams;
 330 extern OutputFile   **output_files;
 331 extern int         nb_output_files;
 332
 333 extern FilterGraph **filtergraphs;
 334 extern int        nb_filtergraphs;
 335
 336 extern char *vstats_filename;
 337
 338 extern float audio_drift_threshold;
 339 extern float dts_delta_threshold;
 340
 341 extern int audio_volume;
 342 extern int audio_sync_method;
 343 extern int video_sync_method;
 344 extern int do_benchmark;
 345 extern int do_deinterlace;
 346 extern int do_hex_dump;
 347 extern int do_pkt_dump;
 348 extern int copy_ts;
 349 extern int copy_tb;
 350 extern int exit_on_error;
 351 extern int print_stats;
 352 extern int qp_hist;
 353
 354 extern const AVIOInterruptCB int_cb;
 355
 356 extern const OptionDef options[];
 357
 358 void reset_options(OptionsContext *o);
 359 void show_usage(void);
 360
 361 void opt_output_file(void *optctx, const char *filename);
 362
 363 void assert_avoptions(AVDictionary *m);
 364
 365 int guess_input_channel_layout(InputStream *ist);
 366
 367 int configure_filtergraph(FilterGraph *fg);
 368 int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out);
 369 int ist_in_filtergraph(FilterGraph *fg, InputStream *ist);
 370 FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost);
 371
 372 int avconv_parse_options(int argc, char **argv);
 373
 374 #endif /* AVCONV_H */