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     OptionGroup *g;
  71
  72     /* input/output options */
  73     int64_t start_time;
  74     const char *format;
  75
  76     SpecifierOpt *codec_names;
  77     int        nb_codec_names;
  78     SpecifierOpt *audio_channels;
  79     int        nb_audio_channels;
  80     SpecifierOpt *audio_sample_rate;
  81     int        nb_audio_sample_rate;
  82     SpecifierOpt *frame_rates;
  83     int        nb_frame_rates;
  84     SpecifierOpt *frame_sizes;
  85     int        nb_frame_sizes;
  86     SpecifierOpt *frame_pix_fmts;
  87     int        nb_frame_pix_fmts;
  88
  89     /* input options */
  90     int64_t input_ts_offset;
  91     int rate_emu;
  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 *pass;
 162     int        nb_pass;
 163     SpecifierOpt *passlogfiles;
 164     int        nb_passlogfiles;
 165 } OptionsContext;
 166
 167 typedef struct InputFilter {
 168     AVFilterContext    *filter;
 169     struct InputStream *ist;
 170     struct FilterGraph *graph;
 171     uint8_t            *name;
 172 } InputFilter;
 173
 174 typedef struct OutputFilter {
 175     AVFilterContext     *filter;
 176     struct OutputStream *ost;
 177     struct FilterGraph  *graph;
 178     uint8_t             *name;
 179
 180     /* temporary storage until stream maps are processed */
 181     AVFilterInOut       *out_tmp;
 182 } OutputFilter;
 183
 184 typedef struct FilterGraph {
 185     int            index;
 186     const char    *graph_desc;
 187
 188     AVFilterGraph *graph;
 189
 190     InputFilter   **inputs;
 191     int          nb_inputs;
 192     OutputFilter **outputs;
 193     int         nb_outputs;
 194 } FilterGraph;
 195
 196 typedef struct InputStream {
 197     int file_index;
 198     AVStream *st;
 199     int discard;             /* true if stream data should be discarded */
 200     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
 201     AVCodec *dec;
 202     AVFrame *decoded_frame;
 203
 204     int64_t       start;     /* time when read started */
 205     /* predicted dts of the next packet read for this stream or (when there are
 206      * several frames in a packet) of the next frame in current packet */
 207     int64_t       next_dts;
 208     /* dts of the last packet read for this stream */
 209     int64_t       last_dts;
 210     PtsCorrectionContext pts_ctx;
 211     double ts_scale;
 212     int is_start;            /* is 1 at the start and after a discontinuity */
 213     int showed_multi_packet_warning;
 214     AVDictionary *opts;
 215     AVRational framerate;               /* framerate forced with -r */
 216
 217     int resample_height;
 218     int resample_width;
 219     int resample_pix_fmt;
 220
 221     int      resample_sample_fmt;
 222     int      resample_sample_rate;
 223     int      resample_channels;
 224     uint64_t resample_channel_layout;
 225
 226     /* a pool of free buffers for decoded data */
 227     FrameBuffer *buffer_pool;
 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     int nb_streams;       /* number of stream that avconv is aware of; may be different
 242                              from ctx.nb_streams if new streams appear during av_read_frame() */
 243     int rate_emu;
 244
 245 #if HAVE_PTHREADS
 246     pthread_t thread;           /* thread reading from this file */
 247     int finished;               /* the thread has exited */
 248     int joined;                 /* the thread has been joined */
 249     pthread_mutex_t fifo_lock;  /* lock for access to fifo */
 250     pthread_cond_t  fifo_cond;  /* the main thread will signal on this cond after reading from fifo */
 251     AVFifoBuffer *fifo;         /* demuxed packets are stored here; freed by the main thread */
 252 #endif
 253 } InputFile;
 254
 255 typedef struct OutputStream {
 256     int file_index;          /* file index */
 257     int index;               /* stream index in the output file */
 258     int source_index;        /* InputStream index */
 259     AVStream *st;            /* stream in the output file */
 260     int encoding_needed;     /* true if encoding needed for this stream */
 261     int frame_number;
 262     /* input pts and corresponding output pts
 263        for A/V sync */
 264     // double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
 265     struct InputStream *sync_ist; /* input stream to sync against */
 266     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
 267     /* pts of the first frame encoded for this stream, used for limiting
 268      * recording time */
 269     int64_t first_pts;
 270     AVBitStreamFilterContext *bitstream_filters;
 271     AVCodec *enc;
 272     int64_t max_frames;
 273     AVFrame *filtered_frame;
 274
 275     /* video only */
 276     AVRational frame_rate;
 277     int force_fps;
 278     int top_field_first;
 279
 280     float frame_aspect_ratio;
 281
 282     /* forced key frames */
 283     int64_t *forced_kf_pts;
 284     int forced_kf_count;
 285     int forced_kf_index;
 286     char *forced_keyframes;
 287
 288     char *logfile_prefix;
 289     FILE *logfile;
 290
 291     OutputFilter *filter;
 292     char *avfilter;
 293
 294     int64_t sws_flags;
 295     AVDictionary *opts;
 296     int finished;        /* no more packets should be written for this stream */
 297     int stream_copy;
 298     const char *attachment_filename;
 299     int copy_initial_nonkeyframes;
 300
 301     enum AVPixelFormat pix_fmts[2];
 302 } OutputStream;
 303
 304 typedef struct OutputFile {
 305     AVFormatContext *ctx;
 306     AVDictionary *opts;
 307     int ost_index;       /* index of the first stream in output_streams */
 308     int64_t recording_time; /* desired length of the resulting file in microseconds */
 309     int64_t start_time;     /* start time in microseconds */
 310     uint64_t limit_filesize;
 311
 312     int shortest;
 313 } OutputFile;
 314
 315 extern InputStream **input_streams;
 316 extern int        nb_input_streams;
 317 extern InputFile   **input_files;
 318 extern int        nb_input_files;
 319
 320 extern OutputStream **output_streams;
 321 extern int         nb_output_streams;
 322 extern OutputFile   **output_files;
 323 extern int         nb_output_files;
 324
 325 extern FilterGraph **filtergraphs;
 326 extern int        nb_filtergraphs;
 327
 328 extern char *vstats_filename;
 329
 330 extern float audio_drift_threshold;
 331 extern float dts_delta_threshold;
 332
 333 extern int audio_volume;
 334 extern int audio_sync_method;
 335 extern int video_sync_method;
 336 extern int do_benchmark;
 337 extern int do_deinterlace;
 338 extern int do_hex_dump;
 339 extern int do_pkt_dump;
 340 extern int copy_ts;
 341 extern int copy_tb;
 342 extern int exit_on_error;
 343 extern int print_stats;
 344 extern int qp_hist;
 345
 346 extern const AVIOInterruptCB int_cb;
 347
 348 extern const OptionDef options[];
 349
 350 void reset_options(OptionsContext *o);
 351 void show_usage(void);
 352
 353 int opt_cpuflags(void *optctx, const char *opt, const char *arg);
 354
 355 void opt_output_file(void *optctx, const char *filename);
 356
 357 void assert_avoptions(AVDictionary *m);
 358
 359 int guess_input_channel_layout(InputStream *ist);
 360
 361 int configure_filtergraph(FilterGraph *fg);
 362 int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out);
 363 int ist_in_filtergraph(FilterGraph *fg, InputStream *ist);
 364 FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost);
 365
 366 int avconv_parse_options(int argc, char **argv);
 367
 368 #endif /* AVCONV_H */