1 /* 2 * This file is part of FFmpeg. 3 * 4 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18 19 #ifndef FFTOOLS_FFMPEG_H 20 #define FFTOOLS_FFMPEG_H 21 22 #include "config.h" 23 24 #include <stdint.h> 25 #include <stdio.h> 26 #include <signal.h> 27 28 #include "cmdutils.h" 29 30 #include "libavformat/avformat.h" 31 #include "libavformat/avio.h" 32 33 #include "libavcodec/avcodec.h" 34 #include "libavcodec/bsf.h" 35 36 #include "libavfilter/avfilter.h" 37 38 #include "libavutil/avutil.h" 39 #include "libavutil/dict.h" 40 #include "libavutil/eval.h" 41 #include "libavutil/fifo.h" 42 #include "libavutil/hwcontext.h" 43 #include "libavutil/pixfmt.h" 44 #include "libavutil/rational.h" 45 #include "libavutil/thread.h" 46 #include "libavutil/threadmessage.h" 47 48 #include "libswresample/swresample.h" 49 50 enum VideoSyncMethod { 51 VSYNC_AUTO = -1, 52 VSYNC_PASSTHROUGH, 53 VSYNC_CFR, 54 VSYNC_VFR, 55 VSYNC_VSCFR, 56 VSYNC_DROP, 57 }; 58 59 #define MAX_STREAMS 1024 /* arbitrary sanity check value */ 60 61 enum HWAccelID { 62 HWACCEL_NONE = 0, 63 HWACCEL_AUTO, 64 HWACCEL_GENERIC, 65 }; 66 67 typedef struct HWDevice { 68 const char *name; 69 enum AVHWDeviceType type; 70 AVBufferRef *device_ref; 71 } HWDevice; 72 73 /* select an input stream for an output stream */ 74 typedef struct StreamMap { 75 int disabled; /* 1 is this mapping is disabled by a negative map */ 76 int file_index; 77 int stream_index; 78 int sync_file_index; 79 int sync_stream_index; 80 char *linklabel; /* name of an output link, for mapping lavfi outputs */ 81 } StreamMap; 82 83 typedef struct { 84 int file_idx, stream_idx, channel_idx; // input 85 int ofile_idx, ostream_idx; // output 86 } AudioChannelMap; 87 88 typedef struct OptionsContext { 89 OptionGroup *g; 90 91 /* input/output options */ 92 int64_t start_time; 93 int64_t start_time_eof; 94 int seek_timestamp; 95 const char *format; 96 97 SpecifierOpt *codec_names; 98 int nb_codec_names; 99 SpecifierOpt *audio_ch_layouts; 100 int nb_audio_ch_layouts; 101 SpecifierOpt *audio_channels; 102 int nb_audio_channels; 103 SpecifierOpt *audio_sample_rate; 104 int nb_audio_sample_rate; 105 SpecifierOpt *frame_rates; 106 int nb_frame_rates; 107 SpecifierOpt *max_frame_rates; 108 int nb_max_frame_rates; 109 SpecifierOpt *frame_sizes; 110 int nb_frame_sizes; 111 SpecifierOpt *frame_pix_fmts; 112 int nb_frame_pix_fmts; 113 114 /* input options */ 115 int64_t input_ts_offset; 116 int loop; 117 int rate_emu; 118 float readrate; 119 int accurate_seek; 120 int thread_queue_size; 121 int input_sync_ref; 122 123 SpecifierOpt *ts_scale; 124 int nb_ts_scale; 125 SpecifierOpt *dump_attachment; 126 int nb_dump_attachment; 127 SpecifierOpt *hwaccels; 128 int nb_hwaccels; 129 SpecifierOpt *hwaccel_devices; 130 int nb_hwaccel_devices; 131 SpecifierOpt *hwaccel_output_formats; 132 int nb_hwaccel_output_formats; 133 SpecifierOpt *autorotate; 134 int nb_autorotate; 135 136 /* output options */ 137 StreamMap *stream_maps; 138 int nb_stream_maps; 139 AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */ 140 int nb_audio_channel_maps; /* number of (valid) -map_channel settings */ 141 int metadata_global_manual; 142 int metadata_streams_manual; 143 int metadata_chapters_manual; 144 const char **attachments; 145 int nb_attachments; 146 147 int chapters_input_file; 148 149 int64_t recording_time; 150 int64_t stop_time; 151 uint64_t limit_filesize; 152 float mux_preload; 153 float mux_max_delay; 154 int shortest; 155 int bitexact; 156 157 int video_disable; 158 int audio_disable; 159 int subtitle_disable; 160 int data_disable; 161 162 /* indexed by output file stream index */ 163 int *streamid_map; 164 int nb_streamid_map; 165 166 SpecifierOpt *metadata; 167 int nb_metadata; 168 SpecifierOpt *max_frames; 169 int nb_max_frames; 170 SpecifierOpt *bitstream_filters; 171 int nb_bitstream_filters; 172 SpecifierOpt *codec_tags; 173 int nb_codec_tags; 174 SpecifierOpt *sample_fmts; 175 int nb_sample_fmts; 176 SpecifierOpt *qscale; 177 int nb_qscale; 178 SpecifierOpt *forced_key_frames; 179 int nb_forced_key_frames; 180 SpecifierOpt *fps_mode; 181 int nb_fps_mode; 182 SpecifierOpt *force_fps; 183 int nb_force_fps; 184 SpecifierOpt *frame_aspect_ratios; 185 int nb_frame_aspect_ratios; 186 SpecifierOpt *rc_overrides; 187 int nb_rc_overrides; 188 SpecifierOpt *intra_matrices; 189 int nb_intra_matrices; 190 SpecifierOpt *inter_matrices; 191 int nb_inter_matrices; 192 SpecifierOpt *chroma_intra_matrices; 193 int nb_chroma_intra_matrices; 194 SpecifierOpt *top_field_first; 195 int nb_top_field_first; 196 SpecifierOpt *metadata_map; 197 int nb_metadata_map; 198 SpecifierOpt *presets; 199 int nb_presets; 200 SpecifierOpt *copy_initial_nonkeyframes; 201 int nb_copy_initial_nonkeyframes; 202 SpecifierOpt *copy_prior_start; 203 int nb_copy_prior_start; 204 SpecifierOpt *filters; 205 int nb_filters; 206 SpecifierOpt *filter_scripts; 207 int nb_filter_scripts; 208 SpecifierOpt *reinit_filters; 209 int nb_reinit_filters; 210 SpecifierOpt *fix_sub_duration; 211 int nb_fix_sub_duration; 212 SpecifierOpt *canvas_sizes; 213 int nb_canvas_sizes; 214 SpecifierOpt *pass; 215 int nb_pass; 216 SpecifierOpt *passlogfiles; 217 int nb_passlogfiles; 218 SpecifierOpt *max_muxing_queue_size; 219 int nb_max_muxing_queue_size; 220 SpecifierOpt *muxing_queue_data_threshold; 221 int nb_muxing_queue_data_threshold; 222 SpecifierOpt *guess_layout_max; 223 int nb_guess_layout_max; 224 SpecifierOpt *apad; 225 int nb_apad; 226 SpecifierOpt *discard; 227 int nb_discard; 228 SpecifierOpt *disposition; 229 int nb_disposition; 230 SpecifierOpt *program; 231 int nb_program; 232 SpecifierOpt *time_bases; 233 int nb_time_bases; 234 SpecifierOpt *enc_time_bases; 235 int nb_enc_time_bases; 236 SpecifierOpt *autoscale; 237 int nb_autoscale; 238 SpecifierOpt *bits_per_raw_sample; 239 int nb_bits_per_raw_sample; 240 } OptionsContext; 241 242 typedef struct InputFilter { 243 AVFilterContext *filter; 244 struct InputStream *ist; 245 struct FilterGraph *graph; 246 uint8_t *name; 247 enum AVMediaType type; // AVMEDIA_TYPE_SUBTITLE for sub2video 248 249 AVFifo *frame_queue; 250 251 // parameters configured for this input 252 int format; 253 254 int width, height; 255 AVRational sample_aspect_ratio; 256 257 int sample_rate; 258 AVChannelLayout ch_layout; 259 260 AVBufferRef *hw_frames_ctx; 261 int32_t *displaymatrix; 262 263 int eof; 264 } InputFilter; 265 266 typedef struct OutputFilter { 267 AVFilterContext *filter; 268 struct OutputStream *ost; 269 struct FilterGraph *graph; 270 uint8_t *name; 271 272 /* temporary storage until stream maps are processed */ 273 AVFilterInOut *out_tmp; 274 enum AVMediaType type; 275 276 /* desired output stream properties */ 277 int width, height; 278 AVRational frame_rate; 279 int format; 280 int sample_rate; 281 AVChannelLayout ch_layout; 282 283 // those are only set if no format is specified and the encoder gives us multiple options 284 // They point directly to the relevant lists of the encoder. 285 const int *formats; 286 const AVChannelLayout *ch_layouts; 287 const int *sample_rates; 288 } OutputFilter; 289 290 typedef struct FilterGraph { 291 int index; 292 const char *graph_desc; 293 294 AVFilterGraph *graph; 295 int reconfiguration; 296 // true when the filtergraph contains only meta filters 297 // that do not modify the frame data 298 int is_meta; 299 300 InputFilter **inputs; 301 int nb_inputs; 302 OutputFilter **outputs; 303 int nb_outputs; 304 } FilterGraph; 305 306 typedef struct InputStream { 307 int file_index; 308 AVStream *st; 309 int discard; /* true if stream data should be discarded */ 310 int user_set_discard; 311 int decoding_needed; /* non zero if the packets must be decoded in 'raw_fifo', see DECODING_FOR_* */ 312 #define DECODING_FOR_OST 1 313 #define DECODING_FOR_FILTER 2 314 int processing_needed; /* non zero if the packets must be processed */ 315 316 AVCodecContext *dec_ctx; 317 const AVCodec *dec; 318 AVFrame *decoded_frame; 319 AVPacket *pkt; 320 321 int64_t prev_pkt_pts; 322 int64_t start; /* time when read started */ 323 /* predicted dts of the next packet read for this stream or (when there are 324 * several frames in a packet) of the next frame in current packet (in AV_TIME_BASE units) */ 325 int64_t next_dts; 326 int64_t first_dts; ///< dts of the first packet read for this stream (in AV_TIME_BASE units) 327 int64_t dts; ///< dts of the last packet read for this stream (in AV_TIME_BASE units) 328 329 int64_t next_pts; ///< synthetic pts for the next decode frame (in AV_TIME_BASE units) 330 int64_t pts; ///< current pts of the decoded frame (in AV_TIME_BASE units) 331 int wrap_correction_done; 332 333 int64_t filter_in_rescale_delta_last; 334 335 int64_t min_pts; /* pts with the smallest value in a current stream */ 336 int64_t max_pts; /* pts with the higher value in a current stream */ 337 338 // when forcing constant input framerate through -r, 339 // this contains the pts that will be given to the next decoded frame 340 int64_t cfr_next_pts; 341 342 int64_t nb_samples; /* number of samples in the last decoded audio frame before looping */ 343 344 double ts_scale; 345 int saw_first_ts; 346 AVDictionary *decoder_opts; 347 AVRational framerate; /* framerate forced with -r */ 348 int top_field_first; 349 int guess_layout_max; 350 351 int autorotate; 352 353 int fix_sub_duration; 354 struct { /* previous decoded subtitle and related variables */ 355 int got_output; 356 int ret; 357 AVSubtitle subtitle; 358 } prev_sub; 359 360 struct sub2video { 361 int64_t last_pts; 362 int64_t end_pts; 363 AVFifo *sub_queue; ///< queue of AVSubtitle* before filter init 364 AVFrame *frame; 365 int w, h; 366 unsigned int initialize; ///< marks if sub2video_update should force an initialization 367 } sub2video; 368 369 /* decoded data from this stream goes into all those filters 370 * currently video and audio only */ 371 InputFilter **filters; 372 int nb_filters; 373 374 int reinit_filters; 375 376 /* hwaccel options */ 377 enum HWAccelID hwaccel_id; 378 enum AVHWDeviceType hwaccel_device_type; 379 char *hwaccel_device; 380 enum AVPixelFormat hwaccel_output_format; 381 382 /* hwaccel context */ 383 void *hwaccel_ctx; 384 void (*hwaccel_uninit)(AVCodecContext *s); 385 int (*hwaccel_retrieve_data)(AVCodecContext *s, AVFrame *frame); 386 enum AVPixelFormat hwaccel_pix_fmt; 387 enum AVPixelFormat hwaccel_retrieved_pix_fmt; 388 389 /* stats */ 390 // combined size of all the packets read 391 uint64_t data_size; 392 /* number of packets successfully read for this stream */ 393 uint64_t nb_packets; 394 // number of frames/samples retrieved from the decoder 395 uint64_t frames_decoded; 396 uint64_t samples_decoded; 397 398 int64_t *dts_buffer; 399 int nb_dts_buffer; 400 401 int got_output; 402 } InputStream; 403 404 typedef struct InputFile { 405 AVFormatContext *ctx; 406 int eof_reached; /* true if eof reached */ 407 int eagain; /* true if last read attempt returned EAGAIN */ 408 int ist_index; /* index of first stream in input_streams */ 409 int loop; /* set number of times input stream should be looped */ 410 int64_t duration; /* actual duration of the longest stream in a file 411 at the moment when looping happens */ 412 AVRational time_base; /* time base of the duration */ 413 int64_t input_ts_offset; 414 int input_sync_ref; 415 416 int64_t ts_offset; 417 int64_t last_ts; 418 int64_t start_time; /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */ 419 int64_t recording_time; 420 int nb_streams; /* number of stream that ffmpeg is aware of; may be different 421 from ctx.nb_streams if new streams appear during av_read_frame() */ 422 int nb_streams_warn; /* number of streams that the user was warned of */ 423 int rate_emu; 424 float readrate; 425 int accurate_seek; 426 427 AVPacket *pkt; 428 429 #if HAVE_THREADS 430 AVThreadMessageQueue *in_thread_queue; 431 pthread_t thread; /* thread reading from this file */ 432 int non_blocking; /* reading packets from the thread should not block */ 433 int joined; /* the thread has been joined */ 434 int thread_queue_size; /* maximum number of queued packets */ 435 #endif 436 } InputFile; 437 438 enum forced_keyframes_const { 439 FKF_N, 440 FKF_N_FORCED, 441 FKF_PREV_FORCED_N, 442 FKF_PREV_FORCED_T, 443 FKF_T, 444 FKF_NB 445 }; 446 447 #define ABORT_ON_FLAG_EMPTY_OUTPUT (1 << 0) 448 #define ABORT_ON_FLAG_EMPTY_OUTPUT_STREAM (1 << 1) 449 450 extern const char *const forced_keyframes_const_names[]; 451 452 typedef enum { 453 ENCODER_FINISHED = 1, 454 MUXER_FINISHED = 2, 455 } OSTFinished ; 456 457 typedef struct OutputStream { 458 int file_index; /* file index */ 459 int index; /* stream index in the output file */ 460 int source_index; /* InputStream index */ 461 AVStream *st; /* stream in the output file */ 462 int encoding_needed; /* true if encoding needed for this stream */ 463 int64_t frame_number; 464 /* input pts and corresponding output pts 465 for A/V sync */ 466 struct InputStream *sync_ist; /* input stream to sync against */ 467 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number 468 /* pts of the first frame encoded for this stream, used for limiting 469 * recording time */ 470 int64_t first_pts; 471 /* dts of the last packet sent to the muxer */ 472 int64_t last_mux_dts; 473 // the timebase of the packets sent to the muxer 474 AVRational mux_timebase; 475 AVRational enc_timebase; 476 477 AVBSFContext *bsf_ctx; 478 479 AVCodecContext *enc_ctx; 480 AVCodecParameters *ref_par; /* associated input codec parameters with encoders options applied */ 481 const AVCodec *enc; 482 int64_t max_frames; 483 AVFrame *filtered_frame; 484 AVFrame *last_frame; 485 AVPacket *pkt; 486 int64_t last_dropped; 487 int64_t last_nb0_frames[3]; 488 489 void *hwaccel_ctx; 490 491 /* video only */ 492 AVRational frame_rate; 493 AVRational max_frame_rate; 494 enum VideoSyncMethod vsync_method; 495 int is_cfr; 496 const char *fps_mode; 497 int force_fps; 498 int top_field_first; 499 int rotate_overridden; 500 int autoscale; 501 int bits_per_raw_sample; 502 double rotate_override_value; 503 504 AVRational frame_aspect_ratio; 505 506 /* forced key frames */ 507 int64_t forced_kf_ref_pts; 508 int64_t *forced_kf_pts; 509 int forced_kf_count; 510 int forced_kf_index; 511 char *forced_keyframes; 512 AVExpr *forced_keyframes_pexpr; 513 double forced_keyframes_expr_const_values[FKF_NB]; 514 int dropped_keyframe; 515 516 /* audio only */ 517 int *audio_channels_map; /* list of the channels id to pick from the source stream */ 518 int audio_channels_mapped; /* number of channels in audio_channels_map */ 519 520 char *logfile_prefix; 521 FILE *logfile; 522 523 OutputFilter *filter; 524 char *avfilter; 525 char *filters; ///< filtergraph associated to the -filter option 526 char *filters_script; ///< filtergraph script associated to the -filter_script option 527 528 AVDictionary *encoder_opts; 529 AVDictionary *sws_dict; 530 AVDictionary *swr_opts; 531 char *apad; 532 OSTFinished finished; /* no more packets should be written for this stream */ 533 int unavailable; /* true if the steram is unavailable (possibly temporarily) */ 534 int stream_copy; 535 536 // init_output_stream() has been called for this stream 537 // The encoder and the bitstream filters have been initialized and the stream 538 // parameters are set in the AVStream. 539 int initialized; 540 541 int inputs_done; 542 543 const char *attachment_filename; 544 int streamcopy_started; 545 int copy_initial_nonkeyframes; 546 int copy_prior_start; 547 char *disposition; 548 549 int keep_pix_fmt; 550 551 /* stats */ 552 // combined size of all the packets written 553 uint64_t data_size; 554 // number of packets send to the muxer 555 uint64_t packets_written; 556 // number of frames/samples sent to the encoder 557 uint64_t frames_encoded; 558 uint64_t samples_encoded; 559 // number of packets received from the encoder 560 uint64_t packets_encoded; 561 562 /* packet quality factor */ 563 int quality; 564 565 int max_muxing_queue_size; 566 567 /* the packets are buffered here until the muxer is ready to be initialized */ 568 AVFifo *muxing_queue; 569 570 /* 571 * The size of the AVPackets' buffers in queue. 572 * Updated when a packet is either pushed or pulled from the queue. 573 */ 574 size_t muxing_queue_data_size; 575 576 /* Threshold after which max_muxing_queue_size will be in effect */ 577 size_t muxing_queue_data_threshold; 578 579 /* packet picture type */ 580 int pict_type; 581 582 /* frame encode sum of squared error values */ 583 int64_t error[4]; 584 } OutputStream; 585 586 typedef struct OutputFile { 587 int index; 588 589 const AVOutputFormat *format; 590 591 AVFormatContext *ctx; 592 AVDictionary *opts; 593 int ost_index; /* index of the first stream in output_streams */ 594 int64_t recording_time; ///< desired length of the resulting file in microseconds == AV_TIME_BASE units 595 int64_t start_time; ///< start time in microseconds == AV_TIME_BASE units 596 uint64_t limit_filesize; /* filesize limit expressed in bytes */ 597 598 int shortest; 599 600 int header_written; 601 } OutputFile; 602 603 extern InputStream **input_streams; 604 extern int nb_input_streams; 605 extern InputFile **input_files; 606 extern int nb_input_files; 607 608 extern OutputStream **output_streams; 609 extern int nb_output_streams; 610 extern OutputFile **output_files; 611 extern int nb_output_files; 612 613 extern FilterGraph **filtergraphs; 614 extern int nb_filtergraphs; 615 616 extern char *vstats_filename; 617 extern char *sdp_filename; 618 619 extern float audio_drift_threshold; 620 extern float dts_delta_threshold; 621 extern float dts_error_threshold; 622 623 extern int audio_volume; 624 extern int audio_sync_method; 625 extern enum VideoSyncMethod video_sync_method; 626 extern float frame_drop_threshold; 627 extern int do_benchmark; 628 extern int do_benchmark_all; 629 extern int do_deinterlace; 630 extern int do_hex_dump; 631 extern int do_pkt_dump; 632 extern int copy_ts; 633 extern int start_at_zero; 634 extern int copy_tb; 635 extern int debug_ts; 636 extern int exit_on_error; 637 extern int abort_on_flags; 638 extern int print_stats; 639 extern int64_t stats_period; 640 extern int qp_hist; 641 extern int stdin_interaction; 642 extern int frame_bits_per_raw_sample; 643 extern AVIOContext *progress_avio; 644 extern float max_error_rate; 645 646 extern char *filter_nbthreads; 647 extern int filter_complex_nbthreads; 648 extern int vstats_version; 649 extern int auto_conversion_filters; 650 651 extern const AVIOInterruptCB int_cb; 652 653 extern const OptionDef options[]; 654 #if CONFIG_QSV 655 extern char *qsv_device; 656 #endif 657 extern HWDevice *filter_hw_device; 658 659 extern int want_sdp; 660 extern unsigned nb_output_dumped; 661 extern int main_return_code; 662 663 664 void term_init(void); 665 void term_exit(void); 666 667 void show_usage(void); 668 669 void remove_avoptions(AVDictionary **a, AVDictionary *b); 670 void assert_avoptions(AVDictionary *m); 671 672 int guess_input_channel_layout(InputStream *ist); 673 674 int configure_filtergraph(FilterGraph *fg); 675 void check_filter_outputs(void); 676 int filtergraph_is_simple(FilterGraph *fg); 677 int init_simple_filtergraph(InputStream *ist, OutputStream *ost); 678 int init_complex_filtergraph(FilterGraph *fg); 679 680 void sub2video_update(InputStream *ist, int64_t heartbeat_pts, AVSubtitle *sub); 681 682 int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame); 683 684 int ffmpeg_parse_options(int argc, char **argv); 685 686 int videotoolbox_init(AVCodecContext *s); 687 int qsv_init(AVCodecContext *s); 688 689 HWDevice *hw_device_get_by_name(const char *name); 690 int hw_device_init_from_string(const char *arg, HWDevice **dev); 691 void hw_device_free_all(void); 692 693 int hw_device_setup_for_decode(InputStream *ist); 694 int hw_device_setup_for_encode(OutputStream *ost); 695 int hw_device_setup_for_filter(FilterGraph *fg); 696 697 int hwaccel_decode_init(AVCodecContext *avctx); 698 699 /* open the muxer when all the streams are initialized */ 700 int of_check_init(OutputFile *of); 701 int of_write_trailer(OutputFile *of); 702 void of_close(OutputFile **pof); 703 704 void of_write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, 705 int unqueue); 706 707 #endif /* FFTOOLS_FFMPEG_H */ 708