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