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     HWACCEL_VDA,
  57     HWACCEL_QSV,
  58     HWACCEL_VAAPI,
  59 };
  60
  61 typedef struct HWAccel {
  62     const char *name;
  63     int (*init)(AVCodecContext *s);
  64     enum HWAccelID id;
  65     enum AVPixelFormat pix_fmt;
  66 } HWAccel;
  67
  68 /* select an input stream for an output stream */
  69 typedef struct StreamMap {
  70     int disabled;           /* 1 is this mapping is disabled by a negative map */
  71     int file_index;
  72     int stream_index;
  73     int sync_file_index;
  74     int sync_stream_index;
  75     char *linklabel;       /* name of an output link, for mapping lavfi outputs */
  76 } StreamMap;
  77
  78 /* select an input file for an output file */
  79 typedef struct MetadataMap {
  80     int  file;      // file index
  81     char type;      // type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
  82     int  index;     // stream/chapter/program number
  83 } MetadataMap;
  84
  85 typedef struct OptionsContext {
  86     OptionGroup *g;
  87
  88     /* input/output options */
  89     int64_t start_time;
  90     const char *format;
  91
  92     SpecifierOpt *codec_names;
  93     int        nb_codec_names;
  94     SpecifierOpt *audio_channels;
  95     int        nb_audio_channels;
  96     SpecifierOpt *audio_sample_rate;
  97     int        nb_audio_sample_rate;
  98     SpecifierOpt *frame_rates;
  99     int        nb_frame_rates;
 100     SpecifierOpt *frame_sizes;
 101     int        nb_frame_sizes;
 102     SpecifierOpt *frame_pix_fmts;
 103     int        nb_frame_pix_fmts;
 104
 105     /* input options */
 106     int64_t input_ts_offset;
 107     int loop;
 108     int rate_emu;
 109     int accurate_seek;
 110
 111     SpecifierOpt *ts_scale;
 112     int        nb_ts_scale;
 113     SpecifierOpt *dump_attachment;
 114     int        nb_dump_attachment;
 115     SpecifierOpt *hwaccels;
 116     int        nb_hwaccels;
 117     SpecifierOpt *hwaccel_devices;
 118     int        nb_hwaccel_devices;
 119     SpecifierOpt *hwaccel_output_formats;
 120     int        nb_hwaccel_output_formats;
 121     SpecifierOpt *autorotate;
 122     int        nb_autorotate;
 123
 124     /* output options */
 125     StreamMap *stream_maps;
 126     int     nb_stream_maps;
 127     /* first item specifies output metadata, second is input */
 128     MetadataMap (*meta_data_maps)[2];
 129     int nb_meta_data_maps;
 130     int metadata_global_manual;
 131     int metadata_streams_manual;
 132     int metadata_chapters_manual;
 133     const char **attachments;
 134     int       nb_attachments;
 135
 136     int chapters_input_file;
 137
 138     int64_t recording_time;
 139     uint64_t limit_filesize;
 140     float mux_preload;
 141     float mux_max_delay;
 142     int shortest;
 143
 144     int video_disable;
 145     int audio_disable;
 146     int subtitle_disable;
 147     int data_disable;
 148
 149     /* indexed by output file stream index */
 150     int   *streamid_map;
 151     int nb_streamid_map;
 152
 153     SpecifierOpt *metadata;
 154     int        nb_metadata;
 155     SpecifierOpt *max_frames;
 156     int        nb_max_frames;
 157     SpecifierOpt *bitstream_filters;
 158     int        nb_bitstream_filters;
 159     SpecifierOpt *codec_tags;
 160     int        nb_codec_tags;
 161     SpecifierOpt *sample_fmts;
 162     int        nb_sample_fmts;
 163     SpecifierOpt *qscale;
 164     int        nb_qscale;
 165     SpecifierOpt *forced_key_frames;
 166     int        nb_forced_key_frames;
 167     SpecifierOpt *force_fps;
 168     int        nb_force_fps;
 169     SpecifierOpt *frame_aspect_ratios;
 170     int        nb_frame_aspect_ratios;
 171     SpecifierOpt *rc_overrides;
 172     int        nb_rc_overrides;
 173     SpecifierOpt *intra_matrices;
 174     int        nb_intra_matrices;
 175     SpecifierOpt *inter_matrices;
 176     int        nb_inter_matrices;
 177     SpecifierOpt *top_field_first;
 178     int        nb_top_field_first;
 179     SpecifierOpt *metadata_map;
 180     int        nb_metadata_map;
 181     SpecifierOpt *presets;
 182     int        nb_presets;
 183     SpecifierOpt *copy_initial_nonkeyframes;
 184     int        nb_copy_initial_nonkeyframes;
 185     SpecifierOpt *filters;
 186     int        nb_filters;
 187     SpecifierOpt *filter_scripts;
 188     int        nb_filter_scripts;
 189     SpecifierOpt *pass;
 190     int        nb_pass;
 191     SpecifierOpt *passlogfiles;
 192     int        nb_passlogfiles;
 193     SpecifierOpt *max_muxing_queue_size;
 194     int        nb_max_muxing_queue_size;
 195 } OptionsContext;
 196
 197 typedef struct InputFilter {
 198     AVFilterContext    *filter;
 199     struct InputStream *ist;
 200     struct FilterGraph *graph;
 201     uint8_t            *name;
 202
 203     AVFifoBuffer *frame_queue;
 204
 205     // parameters configured for this input
 206     int format;
 207
 208     int width, height;
 209     AVRational sample_aspect_ratio;
 210
 211     int sample_rate;
 212     uint64_t channel_layout;
 213
 214     AVBufferRef *hw_frames_ctx;
 215
 216     int eof;
 217 } InputFilter;
 218
 219 typedef struct OutputFilter {
 220     AVFilterContext     *filter;
 221     struct OutputStream *ost;
 222     struct FilterGraph  *graph;
 223     uint8_t             *name;
 224
 225     /* temporary storage until stream maps are processed */
 226     AVFilterInOut       *out_tmp;
 227     enum AVMediaType     type;
 228
 229     /* desired output stream properties */
 230     int width, height;
 231     AVRational frame_rate;
 232     int format;
 233     int sample_rate;
 234     uint64_t channel_layout;
 235
 236     // those are only set if no format is specified and the encoder gives us multiple options
 237     int *formats;
 238     uint64_t *channel_layouts;
 239     int *sample_rates;
 240 } OutputFilter;
 241
 242 typedef struct FilterGraph {
 243     int            index;
 244     const char    *graph_desc;
 245
 246     AVFilterGraph *graph;
 247
 248     InputFilter   **inputs;
 249     int          nb_inputs;
 250     OutputFilter **outputs;
 251     int         nb_outputs;
 252 } FilterGraph;
 253
 254 typedef struct InputStream {
 255     int file_index;
 256     AVStream *st;
 257     int discard;             /* true if stream data should be discarded */
 258     int decoding_needed;     /* true if the packets must be decoded in 'raw_fifo' */
 259     AVCodecContext *dec_ctx;
 260     AVCodec *dec;
 261     AVFrame *decoded_frame;
 262     AVFrame *filter_frame; /* a ref of decoded_frame, to be sent to filters */
 263
 264     int64_t       start;     /* time when read started */
 265     /* predicted dts of the next packet read for this stream or (when there are
 266      * several frames in a packet) of the next frame in current packet */
 267     int64_t       next_dts;
 268     /* dts of the last packet read for this stream */
 269     int64_t       last_dts;
 270     int64_t min_pts; /* pts with the smallest value in a current stream */
 271     int64_t max_pts; /* pts with the higher value in a current stream */
 272
 273     // when forcing constant input framerate through -r,
 274     // this contains the pts that will be given to the next decoded frame
 275     int64_t cfr_next_pts;
 276
 277     int64_t nb_samples; /* number of samples in the last decoded audio frame before looping */
 278     PtsCorrectionContext pts_ctx;
 279     double ts_scale;
 280     AVDictionary *decoder_opts;
 281     AVRational framerate;               /* framerate forced with -r */
 282
 283     int autorotate;
 284
 285     /* decoded data from this stream goes into all those filters
 286      * currently video and audio only */
 287     InputFilter **filters;
 288     int        nb_filters;
 289
 290     /* hwaccel options */
 291     enum HWAccelID hwaccel_id;
 292     char  *hwaccel_device;
 293     enum AVPixelFormat hwaccel_output_format;
 294
 295     /* hwaccel context */
 296     enum HWAccelID active_hwaccel_id;
 297     void  *hwaccel_ctx;
 298     void (*hwaccel_uninit)(AVCodecContext *s);
 299     int  (*hwaccel_get_buffer)(AVCodecContext *s, AVFrame *frame, int flags);
 300     int  (*hwaccel_retrieve_data)(AVCodecContext *s, AVFrame *frame);
 301     enum AVPixelFormat hwaccel_pix_fmt;
 302     enum AVPixelFormat hwaccel_retrieved_pix_fmt;
 303     AVBufferRef *hw_frames_ctx;
 304
 305     /* stats */
 306     // combined size of all the packets read
 307     uint64_t data_size;
 308     /* number of packets successfully read for this stream */
 309     uint64_t nb_packets;
 310     // number of frames/samples retrieved from the decoder
 311     uint64_t frames_decoded;
 312     uint64_t samples_decoded;
 313 } InputStream;
 314
 315 typedef struct InputFile {
 316     AVFormatContext *ctx;
 317     int eof_reached;      /* true if eof reached */
 318     int eagain;           /* true if last read attempt returned EAGAIN */
 319     int ist_index;        /* index of first stream in ist_table */
 320     int loop;             /* set number of times input stream should be looped */
 321     int64_t duration;     /* actual duration of the longest stream in a file
 322                              at the moment when looping happens */
 323     AVRational time_base; /* time base of the duration */
 324     int64_t ts_offset;
 325     int64_t start_time;   /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */
 326     int64_t recording_time;
 327     int nb_streams;       /* number of stream that avconv is aware of; may be different
 328                              from ctx.nb_streams if new streams appear during av_read_frame() */
 329     int rate_emu;
 330     int accurate_seek;
 331
 332 #if HAVE_PTHREADS
 333     pthread_t thread;           /* thread reading from this file */
 334     int finished;               /* the thread has exited */
 335     int joined;                 /* the thread has been joined */
 336     pthread_mutex_t fifo_lock;  /* lock for access to fifo */
 337     pthread_cond_t  fifo_cond;  /* the main thread will signal on this cond after reading from fifo */
 338     AVFifoBuffer *fifo;         /* demuxed packets are stored here; freed by the main thread */
 339 #endif
 340 } InputFile;
 341
 342 typedef struct OutputStream {
 343     int file_index;          /* file index */
 344     int index;               /* stream index in the output file */
 345     int source_index;        /* InputStream index */
 346     AVStream *st;            /* stream in the output file */
 347     int encoding_needed;     /* true if encoding needed for this stream */
 348     int frame_number;
 349     /* input pts and corresponding output pts
 350        for A/V sync */
 351     // double sync_ipts;        /* dts from the AVPacket of the demuxer in second units */
 352     struct InputStream *sync_ist; /* input stream to sync against */
 353     int64_t sync_opts;       /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
 354     /* pts of the first frame encoded for this stream, used for limiting
 355      * recording time */
 356     int64_t first_pts;
 357     /* dts of the last packet sent to the muxer */
 358     int64_t last_mux_dts;
 359     // the timebase of the packets sent to the muxer
 360     AVRational mux_timebase;
 361
 362     int                    nb_bitstream_filters;
 363     const AVBitStreamFilter **bitstream_filters;
 364     AVBSFContext            **bsf_ctx;
 365
 366     AVCodecContext *enc_ctx;
 367     AVCodec *enc;
 368     int64_t max_frames;
 369     AVFrame *filtered_frame;
 370
 371     void  *hwaccel_ctx;
 372
 373     /* video only */
 374     AVRational frame_rate;
 375     int force_fps;
 376     int top_field_first;
 377
 378     float frame_aspect_ratio;
 379
 380     /* forced key frames */
 381     int64_t *forced_kf_pts;
 382     int forced_kf_count;
 383     int forced_kf_index;
 384     char *forced_keyframes;
 385
 386     char *logfile_prefix;
 387     FILE *logfile;
 388
 389     OutputFilter *filter;
 390     char *avfilter;
 391
 392     int64_t sws_flags;
 393     AVDictionary *encoder_opts;
 394     AVDictionary *resample_opts;
 395     int finished;        /* no more packets should be written for this stream */
 396     int stream_copy;
 397
 398     // init_output_stream() has been called for this stream
 399     // The encoder and the bistream filters have been initialized and the stream
 400     // parameters are set in the AVStream.
 401     int initialized;
 402
 403     const char *attachment_filename;
 404     int copy_initial_nonkeyframes;
 405
 406     enum AVPixelFormat pix_fmts[2];
 407
 408     AVCodecParserContext *parser;
 409     AVCodecContext       *parser_avctx;
 410
 411     /* stats */
 412     // combined size of all the packets written
 413     uint64_t data_size;
 414     // number of packets send to the muxer
 415     uint64_t packets_written;
 416     // number of frames/samples sent to the encoder
 417     uint64_t frames_encoded;
 418     uint64_t samples_encoded;
 419
 420     /* packet quality factor */
 421     int quality;
 422
 423     int max_muxing_queue_size;
 424
 425     /* the packets are buffered here until the muxer is ready to be initialized */
 426     AVFifoBuffer *muxing_queue;
 427 } OutputStream;
 428
 429 typedef struct OutputFile {
 430     AVFormatContext *ctx;
 431     AVDictionary *opts;
 432     int ost_index;       /* index of the first stream in output_streams */
 433     int64_t recording_time; /* desired length of the resulting file in microseconds */
 434     int64_t start_time;     /* start time in microseconds */
 435     uint64_t limit_filesize;
 436
 437     int shortest;
 438
 439     int header_written;
 440 } OutputFile;
 441
 442 extern InputStream **input_streams;
 443 extern int        nb_input_streams;
 444 extern InputFile   **input_files;
 445 extern int        nb_input_files;
 446
 447 extern OutputStream **output_streams;
 448 extern int         nb_output_streams;
 449 extern OutputFile   **output_files;
 450 extern int         nb_output_files;
 451
 452 extern FilterGraph **filtergraphs;
 453 extern int        nb_filtergraphs;
 454
 455 extern char *vstats_filename;
 456
 457 extern float audio_drift_threshold;
 458 extern float dts_delta_threshold;
 459
 460 extern int audio_volume;
 461 extern int audio_sync_method;
 462 extern int video_sync_method;
 463 extern int do_benchmark;
 464 extern int do_deinterlace;
 465 extern int do_hex_dump;
 466 extern int do_pkt_dump;
 467 extern int copy_ts;
 468 extern int copy_tb;
 469 extern int exit_on_error;
 470 extern int print_stats;
 471 extern int qp_hist;
 472
 473 extern const AVIOInterruptCB int_cb;
 474
 475 extern const OptionDef options[];
 476
 477 extern const HWAccel hwaccels[];
 478 extern int hwaccel_lax_profile_check;
 479 extern AVBufferRef *hw_device_ctx;
 480
 481 void reset_options(OptionsContext *o);
 482 void show_usage(void);
 483
 484 void opt_output_file(void *optctx, const char *filename);
 485
 486 void assert_avoptions(AVDictionary *m);
 487
 488 int guess_input_channel_layout(InputStream *ist);
 489
 490 int configure_filtergraph(FilterGraph *fg);
 491 int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out);
 492 int ist_in_filtergraph(FilterGraph *fg, InputStream *ist);
 493 int filtergraph_is_simple(FilterGraph *fg);
 494 int init_simple_filtergraph(InputStream *ist, OutputStream *ost);
 495 int init_complex_filtergraph(FilterGraph *fg);
 496
 497 int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame);
 498
 499 int avconv_parse_options(int argc, char **argv);
 500
 501 int vdpau_init(AVCodecContext *s);
 502 int dxva2_init(AVCodecContext *s);
 503 int vda_init(AVCodecContext *s);
 504 int qsv_init(AVCodecContext *s);
 505 int qsv_transcode_init(OutputStream *ost);
 506 int vaapi_decode_init(AVCodecContext *avctx);
 507 int vaapi_device_init(const char *device);
 508
 509 #endif /* AVCONV_H */