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 enum HWAccelID {
  52     HWACCEL_NONE = 0,
  53     HWACCEL_AUTO,
  54     HWACCEL_VDPAU,
  55     HWACCEL_DXVA2,
  56 };
  57
  58 typedef struct HWAccel {
  59     const char *name;
  60     int (*init)(AVCodecContext *s);
  61     enum HWAccelID id;
  62     enum AVPixelFormat pix_fmt;
  63 } HWAccel;
  64
  65 /* select an input stream for an output stream */
  66 typedef struct StreamMap {
  67     int disabled;           /* 1 is this mapping is disabled by a negative map */
  68     int file_index;
  69     int stream_index;
  70     int sync_file_index;
  71     int sync_stream_index;
  72     char *linklabel;       /* name of an output link, for mapping lavfi outputs */
  73 } StreamMap;
  74
  75 /* select an input file for an output file */
  76 typedef struct MetadataMap {
  77     int  file;      // file index
  78     char type;      // type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
  79     int  index;     // stream/chapter/program number
  80 } MetadataMap;
  81
  82 typedef struct OptionsContext {
  83     OptionGroup *g;
  84
  85     /* input/output options */
  86     int64_t start_time;
  87     const char *format;
  88
  89     SpecifierOpt *codec_names;
  90     int        nb_codec_names;
  91     SpecifierOpt *audio_channels;
  92     int        nb_audio_channels;
  93     SpecifierOpt *audio_sample_rate;
  94     int        nb_audio_sample_rate;
  95     SpecifierOpt *frame_rates;
  96     int        nb_frame_rates;
  97     SpecifierOpt *frame_sizes;
  98     int        nb_frame_sizes;
  99     SpecifierOpt *frame_pix_fmts;
 100     int        nb_frame_pix_fmts;
 101
 102     /* input options */
 103     int64_t input_ts_offset;
 104     int rate_emu;
 105     int accurate_seek;
 106
 107     SpecifierOpt *ts_scale;
 108     int        nb_ts_scale;
 109     SpecifierOpt *dump_attachment;
 110     int        nb_dump_attachment;
 111     SpecifierOpt *hwaccels;
 112     int        nb_hwaccels;
 113     SpecifierOpt *hwaccel_devices;
 114     int        nb_hwaccel_devices;
 115
 116     /* output options */
 117     StreamMap *stream_maps;
 118     int     nb_stream_maps;
 119     /* first item specifies output metadata, second is input */
 120     MetadataMap (*meta_data_maps)[2];
 121     int nb_meta_data_maps;
 122     int metadata_global_manual;
 123     int metadata_streams_manual;
 124     int metadata_chapters_manual;
 125     const char **attachments;
 126     int       nb_attachments;
 127
 128     int chapters_input_file;
 129
 130     int64_t recording_time;
 131     uint64_t limit_filesize;
 132     float mux_preload;
 133     float mux_max_delay;
 134     int shortest;
 135
 136     int video_disable;
 137     int audio_disable;
 138     int subtitle_disable;
 139     int data_disable;
 140
 141     /* indexed by output file stream index */
 142     int   *streamid_map;
 143     int nb_streamid_map;
 144
 145     SpecifierOpt *metadata;
 146     int        nb_metadata;
 147     SpecifierOpt *max_frames;
 148     int        nb_max_frames;
 149     SpecifierOpt *bitstream_filters;
 150     int        nb_bitstream_filters;
 151     SpecifierOpt *codec_tags;
 152     int        nb_codec_tags;
 153     SpecifierOpt *sample_fmts;
 154     int        nb_sample_fmts;
 155     SpecifierOpt *qscale;
 156     int        nb_qscale;
 157     SpecifierOpt *forced_key_frames;
 158     int        nb_forced_key_frames;
 159     SpecifierOpt *force_fps;
 160     int        nb_force_fps;
 161     SpecifierOpt *frame_aspect_ratios;
 162     int        nb_frame_aspect_ratios;
 163     SpecifierOpt *rc_overrides;
 164     int        nb_rc_overrides;
 165     SpecifierOpt *intra_matrices;
 166     int        nb_intra_matrices;
 167     SpecifierOpt *inter_matrices;
 168     int        nb_inter_matrices;
 169     SpecifierOpt *top_field_first;
 170     int        nb_top_field_first;
 171     SpecifierOpt *metadata_map;
 172     int        nb_metadata_map;
 173     SpecifierOpt *presets;
 174     int        nb_presets;
 175     SpecifierOpt *copy_initial_nonkeyframes;
 176     int        nb_copy_initial_nonkeyframes;
 177     SpecifierOpt *filters;
 178     int        nb_filters;
 179     SpecifierOpt *filter_scripts;
 180     int        nb_filter_scripts;
 181     SpecifierOpt *pass;
 182     int        nb_pass;
 183     SpecifierOpt *passlogfiles;
 184     int        nb_passlogfiles;
 185 } OptionsContext;
 186
 187 typedef struct InputFilter {
 188     AVFilterContext    *filter;
 189     struct InputStream *ist;
 190     struct FilterGraph *graph;
 191     uint8_t            *name;
 192 } InputFilter;
 193
 194 typedef struct OutputFilter {
 195     AVFilterContext     *filter;
 196     struct OutputStream *ost;
 197     struct FilterGraph  *graph;
 198     uint8_t             *name;
 199
 200     /* temporary storage until stream maps are processed */
 201     AVFilterInOut       *out_tmp;
 202 } OutputFilter;
 203
 204 typedef struct FilterGraph {
 205     int            index;
 206     const char    *graph_desc;
 207
 208     AVFilterGraph *graph;
 209
 210     InputFilter   **inputs;
 211     int          nb_inputs;
 212     OutputFilter **outputs;
 213     int         nb_outputs;
 214 } FilterGraph;
 215
 216 typedef struct InputStream {
 217     int file_index;
 218     AVStream *st;
 219     int discard;             /* true if stream data should be discarded */
 220     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
 221     AVCodec *dec;
 222     AVFrame *decoded_frame;
 223     AVFrame *filter_frame; /* a ref of decoded_frame, to be sent to filters */
 224
 225     int64_t       start;     /* time when read started */
 226     /* predicted dts of the next packet read for this stream or (when there are
 227      * several frames in a packet) of the next frame in current packet */
 228     int64_t       next_dts;
 229     /* dts of the last packet read for this stream */
 230     int64_t       last_dts;
 231     PtsCorrectionContext pts_ctx;
 232     double ts_scale;
 233     int showed_multi_packet_warning;
 234     AVDictionary *opts;
 235     AVRational framerate;               /* framerate forced with -r */
 236
 237     int resample_height;
 238     int resample_width;
 239     int resample_pix_fmt;
 240
 241     int      resample_sample_fmt;
 242     int      resample_sample_rate;
 243     int      resample_channels;
 244     uint64_t resample_channel_layout;
 245
 246     /* decoded data from this stream goes into all those filters
 247      * currently video and audio only */
 248     InputFilter **filters;
 249     int        nb_filters;
 250
 251     /* hwaccel options */
 252     enum HWAccelID hwaccel_id;
 253     char  *hwaccel_device;
 254
 255     /* hwaccel context */
 256     enum HWAccelID active_hwaccel_id;
 257     void  *hwaccel_ctx;
 258     void (*hwaccel_uninit)(AVCodecContext *s);
 259     int  (*hwaccel_get_buffer)(AVCodecContext *s, AVFrame *frame, int flags);
 260     int  (*hwaccel_retrieve_data)(AVCodecContext *s, AVFrame *frame);
 261     enum AVPixelFormat hwaccel_pix_fmt;
 262     enum AVPixelFormat hwaccel_retrieved_pix_fmt;
 263
 264     /* stats */
 265     // combined size of all the packets read
 266     uint64_t data_size;
 267     /* number of packets successfully read for this stream */
 268     uint64_t nb_packets;
 269     // number of frames/samples retrieved from the decoder
 270     uint64_t frames_decoded;
 271     uint64_t samples_decoded;
 272 } InputStream;
 273
 274 typedef struct InputFile {
 275     AVFormatContext *ctx;
 276     int eof_reached;      /* true if eof reached */
 277     int eagain;           /* true if last read attempt returned EAGAIN */
 278     int ist_index;        /* index of first stream in ist_table */
 279     int64_t ts_offset;
 280     int64_t start_time;   /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */
 281     int64_t recording_time;
 282     int nb_streams;       /* number of stream that avconv is aware of; may be different
 283                              from ctx.nb_streams if new streams appear during av_read_frame() */
 284     int rate_emu;
 285     int accurate_seek;
 286
 287 #if HAVE_PTHREADS
 288     pthread_t thread;           /* thread reading from this file */
 289     int finished;               /* the thread has exited */
 290     int joined;                 /* the thread has been joined */
 291     pthread_mutex_t fifo_lock;  /* lock for access to fifo */
 292     pthread_cond_t  fifo_cond;  /* the main thread will signal on this cond after reading from fifo */
 293     AVFifoBuffer *fifo;         /* demuxed packets are stored here; freed by the main thread */
 294 #endif
 295 } InputFile;
 296
 297 typedef struct OutputStream {
 298     int file_index;          /* file index */
 299     int index;               /* stream index in the output file */
 300     int source_index;        /* InputStream index */
 301     AVStream *st;            /* stream in the output file */
 302     int encoding_needed;     /* true if encoding needed for this stream */
 303     int frame_number;
 304     /* input pts and corresponding output pts
 305        for A/V sync */
 306     // double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
 307     struct InputStream *sync_ist; /* input stream to sync against */
 308     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
 309     /* pts of the first frame encoded for this stream, used for limiting
 310      * recording time */
 311     int64_t first_pts;
 312     /* dts of the last packet sent to the muxer */
 313     int64_t last_mux_dts;
 314     AVBitStreamFilterContext *bitstream_filters;
 315     AVCodec *enc;
 316     int64_t max_frames;
 317     AVFrame *filtered_frame;
 318
 319     /* video only */
 320     AVRational frame_rate;
 321     int force_fps;
 322     int top_field_first;
 323
 324     float frame_aspect_ratio;
 325
 326     /* forced key frames */
 327     int64_t *forced_kf_pts;
 328     int forced_kf_count;
 329     int forced_kf_index;
 330     char *forced_keyframes;
 331
 332     char *logfile_prefix;
 333     FILE *logfile;
 334
 335     OutputFilter *filter;
 336     char *avfilter;
 337
 338     int64_t sws_flags;
 339     AVDictionary *opts;
 340     AVDictionary *resample_opts;
 341     int finished;        /* no more packets should be written for this stream */
 342     int stream_copy;
 343     const char *attachment_filename;
 344     int copy_initial_nonkeyframes;
 345
 346     enum AVPixelFormat pix_fmts[2];
 347
 348     AVCodecParserContext *parser;
 349
 350     /* stats */
 351     // combined size of all the packets written
 352     uint64_t data_size;
 353     // number of packets send to the muxer
 354     uint64_t packets_written;
 355     // number of frames/samples sent to the encoder
 356     uint64_t frames_encoded;
 357     uint64_t samples_encoded;
 358 } OutputStream;
 359
 360 typedef struct OutputFile {
 361     AVFormatContext *ctx;
 362     AVDictionary *opts;
 363     int ost_index;       /* index of the first stream in output_streams */
 364     int64_t recording_time; /* desired length of the resulting file in microseconds */
 365     int64_t start_time;     /* start time in microseconds */
 366     uint64_t limit_filesize;
 367
 368     int shortest;
 369 } OutputFile;
 370
 371 extern InputStream **input_streams;
 372 extern int        nb_input_streams;
 373 extern InputFile   **input_files;
 374 extern int        nb_input_files;
 375
 376 extern OutputStream **output_streams;
 377 extern int         nb_output_streams;
 378 extern OutputFile   **output_files;
 379 extern int         nb_output_files;
 380
 381 extern FilterGraph **filtergraphs;
 382 extern int        nb_filtergraphs;
 383
 384 extern char *vstats_filename;
 385
 386 extern float audio_drift_threshold;
 387 extern float dts_delta_threshold;
 388
 389 extern int audio_volume;
 390 extern int audio_sync_method;
 391 extern int video_sync_method;
 392 extern int do_benchmark;
 393 extern int do_deinterlace;
 394 extern int do_hex_dump;
 395 extern int do_pkt_dump;
 396 extern int copy_ts;
 397 extern int copy_tb;
 398 extern int exit_on_error;
 399 extern int print_stats;
 400 extern int qp_hist;
 401
 402 extern const AVIOInterruptCB int_cb;
 403
 404 extern const OptionDef options[];
 405
 406 extern const HWAccel hwaccels[];
 407
 408 void reset_options(OptionsContext *o);
 409 void show_usage(void);
 410
 411 void opt_output_file(void *optctx, const char *filename);
 412
 413 void assert_avoptions(AVDictionary *m);
 414
 415 int guess_input_channel_layout(InputStream *ist);
 416
 417 int configure_filtergraph(FilterGraph *fg);
 418 int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out);
 419 int ist_in_filtergraph(FilterGraph *fg, InputStream *ist);
 420 FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost);
 421
 422 int avconv_parse_options(int argc, char **argv);
 423
 424 int vdpau_init(AVCodecContext *s);
 425 int dxva2_init(AVCodecContext *s);
 426
 427 #endif /* AVCONV_H */