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n5.1.7
fftools/ffmpeg.h
707 строк
21 KB
Gyan Doshi
ffmpeg: add option -isync
14 июл 2022, 13:19
14 июл 2022, 13:19
b21d387
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/* * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef FFTOOLS_FFMPEG_H #define FFTOOLS_FFMPEG_H #include "config.h" #include <stdint.h> #include <stdio.h> #include <signal.h> #include "cmdutils.h" #include "libavformat/avformat.h" #include "libavformat/avio.h" #include "libavcodec/avcodec.h" #include "libavcodec/bsf.h" #include "libavfilter/avfilter.h" #include "libavutil/avutil.h" #include "libavutil/dict.h" #include "libavutil/eval.h" #include "libavutil/fifo.h" #include "libavutil/hwcontext.h" #include "libavutil/pixfmt.h" #include "libavutil/rational.h" #include "libavutil/thread.h" #include "libavutil/threadmessage.h" #include "libswresample/swresample.h" enum VideoSyncMethod { VSYNC_AUTO = -1, VSYNC_PASSTHROUGH, VSYNC_CFR, VSYNC_VFR, VSYNC_VSCFR, VSYNC_DROP, }; #define MAX_STREAMS 1024 /* arbitrary sanity check value */ enum HWAccelID { HWACCEL_NONE = 0, HWACCEL_AUTO, HWACCEL_GENERIC, }; typedef struct HWDevice { const char *name; enum AVHWDeviceType type; AVBufferRef *device_ref; } HWDevice; /* select an input stream for an output stream */ typedef struct StreamMap { int disabled; /* 1 is this mapping is disabled by a negative map */ int file_index; int stream_index; int sync_file_index; int sync_stream_index; char *linklabel; /* name of an output link, for mapping lavfi outputs */ } StreamMap; typedef struct { int file_idx, stream_idx, channel_idx; // input int ofile_idx, ostream_idx; // output } AudioChannelMap; typedef struct OptionsContext { OptionGroup *g; /* input/output options */ int64_t start_time; int64_t start_time_eof; int seek_timestamp; const char *format; SpecifierOpt *codec_names; int nb_codec_names; SpecifierOpt *audio_ch_layouts; int nb_audio_ch_layouts; SpecifierOpt *audio_channels; int nb_audio_channels; SpecifierOpt *audio_sample_rate; int nb_audio_sample_rate; SpecifierOpt *frame_rates; int nb_frame_rates; SpecifierOpt *max_frame_rates; int nb_max_frame_rates; SpecifierOpt *frame_sizes; int nb_frame_sizes; SpecifierOpt *frame_pix_fmts; int nb_frame_pix_fmts; /* input options */ int64_t input_ts_offset; int loop; int rate_emu; float readrate; int accurate_seek; int thread_queue_size; int input_sync_ref; SpecifierOpt *ts_scale; int nb_ts_scale; SpecifierOpt *dump_attachment; int nb_dump_attachment; SpecifierOpt *hwaccels; int nb_hwaccels; SpecifierOpt *hwaccel_devices; int nb_hwaccel_devices; SpecifierOpt *hwaccel_output_formats; int nb_hwaccel_output_formats; SpecifierOpt *autorotate; int nb_autorotate; /* output options */ StreamMap *stream_maps; int nb_stream_maps; AudioChannelMap *audio_channel_maps; /* one info entry per -map_channel */ int nb_audio_channel_maps; /* number of (valid) -map_channel settings */ int metadata_global_manual; int metadata_streams_manual; int metadata_chapters_manual; const char **attachments; int nb_attachments; int chapters_input_file; int64_t recording_time; int64_t stop_time; uint64_t limit_filesize; float mux_preload; float mux_max_delay; int shortest; int bitexact; int video_disable; int audio_disable; int subtitle_disable; int data_disable; /* indexed by output file stream index */ int *streamid_map; int nb_streamid_map; SpecifierOpt *metadata; int nb_metadata; SpecifierOpt *max_frames; int nb_max_frames; SpecifierOpt *bitstream_filters; int nb_bitstream_filters; SpecifierOpt *codec_tags; int nb_codec_tags; SpecifierOpt *sample_fmts; int nb_sample_fmts; SpecifierOpt *qscale; int nb_qscale; SpecifierOpt *forced_key_frames; int nb_forced_key_frames; SpecifierOpt *fps_mode; int nb_fps_mode; SpecifierOpt *force_fps; int nb_force_fps; SpecifierOpt *frame_aspect_ratios; int nb_frame_aspect_ratios; SpecifierOpt *rc_overrides; int nb_rc_overrides; SpecifierOpt *intra_matrices; int nb_intra_matrices; SpecifierOpt *inter_matrices; int nb_inter_matrices; SpecifierOpt *chroma_intra_matrices; int nb_chroma_intra_matrices; SpecifierOpt *top_field_first; int nb_top_field_first; SpecifierOpt *metadata_map; int nb_metadata_map; SpecifierOpt *presets; int nb_presets; SpecifierOpt *copy_initial_nonkeyframes; int nb_copy_initial_nonkeyframes; SpecifierOpt *copy_prior_start; int nb_copy_prior_start; SpecifierOpt *filters; int nb_filters; SpecifierOpt *filter_scripts; int nb_filter_scripts; SpecifierOpt *reinit_filters; int nb_reinit_filters; SpecifierOpt *fix_sub_duration; int nb_fix_sub_duration; SpecifierOpt *canvas_sizes; int nb_canvas_sizes; SpecifierOpt *pass; int nb_pass; SpecifierOpt *passlogfiles; int nb_passlogfiles; SpecifierOpt *max_muxing_queue_size; int nb_max_muxing_queue_size; SpecifierOpt *muxing_queue_data_threshold; int nb_muxing_queue_data_threshold; SpecifierOpt *guess_layout_max; int nb_guess_layout_max; SpecifierOpt *apad; int nb_apad; SpecifierOpt *discard; int nb_discard; SpecifierOpt *disposition; int nb_disposition; SpecifierOpt *program; int nb_program; SpecifierOpt *time_bases; int nb_time_bases; SpecifierOpt *enc_time_bases; int nb_enc_time_bases; SpecifierOpt *autoscale; int nb_autoscale; SpecifierOpt *bits_per_raw_sample; int nb_bits_per_raw_sample; } OptionsContext; typedef struct InputFilter { AVFilterContext *filter; struct InputStream *ist; struct FilterGraph *graph; uint8_t *name; enum AVMediaType type; // AVMEDIA_TYPE_SUBTITLE for sub2video AVFifo *frame_queue; // parameters configured for this input int format; int width, height; AVRational sample_aspect_ratio; int sample_rate; AVChannelLayout ch_layout; AVBufferRef *hw_frames_ctx; int32_t *displaymatrix; int eof; } InputFilter; typedef struct OutputFilter { AVFilterContext *filter; struct OutputStream *ost; struct FilterGraph *graph; uint8_t *name; /* temporary storage until stream maps are processed */ AVFilterInOut *out_tmp; enum AVMediaType type; /* desired output stream properties */ int width, height; AVRational frame_rate; int format; int sample_rate; AVChannelLayout ch_layout; // those are only set if no format is specified and the encoder gives us multiple options // They point directly to the relevant lists of the encoder. const int *formats; const AVChannelLayout *ch_layouts; const int *sample_rates; } OutputFilter; typedef struct FilterGraph { int index; const char *graph_desc; AVFilterGraph *graph; int reconfiguration; // true when the filtergraph contains only meta filters // that do not modify the frame data int is_meta; InputFilter **inputs; int nb_inputs; OutputFilter **outputs; int nb_outputs; } FilterGraph; typedef struct InputStream { int file_index; AVStream *st; int discard; /* true if stream data should be discarded */ int user_set_discard; int decoding_needed; /* non zero if the packets must be decoded in 'raw_fifo', see DECODING_FOR_* */ #define DECODING_FOR_OST 1 #define DECODING_FOR_FILTER 2 int processing_needed; /* non zero if the packets must be processed */ AVCodecContext *dec_ctx; const AVCodec *dec; AVFrame *decoded_frame; AVPacket *pkt; int64_t prev_pkt_pts; int64_t start; /* time when read started */ /* predicted dts of the next packet read for this stream or (when there are * several frames in a packet) of the next frame in current packet (in AV_TIME_BASE units) */ int64_t next_dts; int64_t first_dts; ///< dts of the first packet read for this stream (in AV_TIME_BASE units) int64_t dts; ///< dts of the last packet read for this stream (in AV_TIME_BASE units) int64_t next_pts; ///< synthetic pts for the next decode frame (in AV_TIME_BASE units) int64_t pts; ///< current pts of the decoded frame (in AV_TIME_BASE units) int wrap_correction_done; int64_t filter_in_rescale_delta_last; int64_t min_pts; /* pts with the smallest value in a current stream */ int64_t max_pts; /* pts with the higher value in a current stream */ // when forcing constant input framerate through -r, // this contains the pts that will be given to the next decoded frame int64_t cfr_next_pts; int64_t nb_samples; /* number of samples in the last decoded audio frame before looping */ double ts_scale; int saw_first_ts; AVDictionary *decoder_opts; AVRational framerate; /* framerate forced with -r */ int top_field_first; int guess_layout_max; int autorotate; int fix_sub_duration; struct { /* previous decoded subtitle and related variables */ int got_output; int ret; AVSubtitle subtitle; } prev_sub; struct sub2video { int64_t last_pts; int64_t end_pts; AVFifo *sub_queue; ///< queue of AVSubtitle* before filter init AVFrame *frame; int w, h; unsigned int initialize; ///< marks if sub2video_update should force an initialization } sub2video; /* decoded data from this stream goes into all those filters * currently video and audio only */ InputFilter **filters; int nb_filters; int reinit_filters; /* hwaccel options */ enum HWAccelID hwaccel_id; enum AVHWDeviceType hwaccel_device_type; char *hwaccel_device; enum AVPixelFormat hwaccel_output_format; /* hwaccel context */ void *hwaccel_ctx; void (*hwaccel_uninit)(AVCodecContext *s); int (*hwaccel_retrieve_data)(AVCodecContext *s, AVFrame *frame); enum AVPixelFormat hwaccel_pix_fmt; enum AVPixelFormat hwaccel_retrieved_pix_fmt; /* stats */ // combined size of all the packets read uint64_t data_size; /* number of packets successfully read for this stream */ uint64_t nb_packets; // number of frames/samples retrieved from the decoder uint64_t frames_decoded; uint64_t samples_decoded; int64_t *dts_buffer; int nb_dts_buffer; int got_output; } InputStream; typedef struct InputFile { AVFormatContext *ctx; int eof_reached; /* true if eof reached */ int eagain; /* true if last read attempt returned EAGAIN */ int ist_index; /* index of first stream in input_streams */ int loop; /* set number of times input stream should be looped */ int64_t duration; /* actual duration of the longest stream in a file at the moment when looping happens */ AVRational time_base; /* time base of the duration */ int64_t input_ts_offset; int input_sync_ref; int64_t ts_offset; int64_t last_ts; int64_t start_time; /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */ int64_t recording_time; int nb_streams; /* number of stream that ffmpeg is aware of; may be different from ctx.nb_streams if new streams appear during av_read_frame() */ int nb_streams_warn; /* number of streams that the user was warned of */ int rate_emu; float readrate; int accurate_seek; AVPacket *pkt; #if HAVE_THREADS AVThreadMessageQueue *in_thread_queue; pthread_t thread; /* thread reading from this file */ int non_blocking; /* reading packets from the thread should not block */ int joined; /* the thread has been joined */ int thread_queue_size; /* maximum number of queued packets */ #endif } InputFile; enum forced_keyframes_const { FKF_N, FKF_N_FORCED, FKF_PREV_FORCED_N, FKF_PREV_FORCED_T, FKF_T, FKF_NB }; #define ABORT_ON_FLAG_EMPTY_OUTPUT (1 << 0) #define ABORT_ON_FLAG_EMPTY_OUTPUT_STREAM (1 << 1) extern const char *const forced_keyframes_const_names[]; typedef enum { ENCODER_FINISHED = 1, MUXER_FINISHED = 2, } OSTFinished ; typedef struct OutputStream { int file_index; /* file index */ int index; /* stream index in the output file */ int source_index; /* InputStream index */ AVStream *st; /* stream in the output file */ int encoding_needed; /* true if encoding needed for this stream */ int64_t frame_number; /* input pts and corresponding output pts for A/V sync */ struct InputStream *sync_ist; /* input stream to sync against */ int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number /* pts of the first frame encoded for this stream, used for limiting * recording time */ int64_t first_pts; /* dts of the last packet sent to the muxer */ int64_t last_mux_dts; // the timebase of the packets sent to the muxer AVRational mux_timebase; AVRational enc_timebase; AVBSFContext *bsf_ctx; AVCodecContext *enc_ctx; AVCodecParameters *ref_par; /* associated input codec parameters with encoders options applied */ const AVCodec *enc; int64_t max_frames; AVFrame *filtered_frame; AVFrame *last_frame; AVPacket *pkt; int64_t last_dropped; int64_t last_nb0_frames[3]; void *hwaccel_ctx; /* video only */ AVRational frame_rate; AVRational max_frame_rate; enum VideoSyncMethod vsync_method; int is_cfr; const char *fps_mode; int force_fps; int top_field_first; int rotate_overridden; int autoscale; int bits_per_raw_sample; double rotate_override_value; AVRational frame_aspect_ratio; /* forced key frames */ int64_t forced_kf_ref_pts; int64_t *forced_kf_pts; int forced_kf_count; int forced_kf_index; char *forced_keyframes; AVExpr *forced_keyframes_pexpr; double forced_keyframes_expr_const_values[FKF_NB]; int dropped_keyframe; /* audio only */ int *audio_channels_map; /* list of the channels id to pick from the source stream */ int audio_channels_mapped; /* number of channels in audio_channels_map */ char *logfile_prefix; FILE *logfile; OutputFilter *filter; char *avfilter; char *filters; ///< filtergraph associated to the -filter option char *filters_script; ///< filtergraph script associated to the -filter_script option AVDictionary *encoder_opts; AVDictionary *sws_dict; AVDictionary *swr_opts; char *apad; OSTFinished finished; /* no more packets should be written for this stream */ int unavailable; /* true if the steram is unavailable (possibly temporarily) */ int stream_copy; // init_output_stream() has been called for this stream // The encoder and the bitstream filters have been initialized and the stream // parameters are set in the AVStream. int initialized; int inputs_done; const char *attachment_filename; int streamcopy_started; int copy_initial_nonkeyframes; int copy_prior_start; char *disposition; int keep_pix_fmt; /* stats */ // combined size of all the packets written uint64_t data_size; // number of packets send to the muxer uint64_t packets_written; // number of frames/samples sent to the encoder uint64_t frames_encoded; uint64_t samples_encoded; // number of packets received from the encoder uint64_t packets_encoded; /* packet quality factor */ int quality; int max_muxing_queue_size; /* the packets are buffered here until the muxer is ready to be initialized */ AVFifo *muxing_queue; /* * The size of the AVPackets' buffers in queue. * Updated when a packet is either pushed or pulled from the queue. */ size_t muxing_queue_data_size; /* Threshold after which max_muxing_queue_size will be in effect */ size_t muxing_queue_data_threshold; /* packet picture type */ int pict_type; /* frame encode sum of squared error values */ int64_t error[4]; } OutputStream; typedef struct OutputFile { int index; const AVOutputFormat *format; AVFormatContext *ctx; AVDictionary *opts; int ost_index; /* index of the first stream in output_streams */ int64_t recording_time; ///< desired length of the resulting file in microseconds == AV_TIME_BASE units int64_t start_time; ///< start time in microseconds == AV_TIME_BASE units uint64_t limit_filesize; /* filesize limit expressed in bytes */ int shortest; int header_written; } OutputFile; extern InputStream **input_streams; extern int nb_input_streams; extern InputFile **input_files; extern int nb_input_files; extern OutputStream **output_streams; extern int nb_output_streams; extern OutputFile **output_files; extern int nb_output_files; extern FilterGraph **filtergraphs; extern int nb_filtergraphs; extern char *vstats_filename; extern char *sdp_filename; extern float audio_drift_threshold; extern float dts_delta_threshold; extern float dts_error_threshold; extern int audio_volume; extern int audio_sync_method; extern enum VideoSyncMethod video_sync_method; extern float frame_drop_threshold; extern int do_benchmark; extern int do_benchmark_all; extern int do_deinterlace; extern int do_hex_dump; extern int do_pkt_dump; extern int copy_ts; extern int start_at_zero; extern int copy_tb; extern int debug_ts; extern int exit_on_error; extern int abort_on_flags; extern int print_stats; extern int64_t stats_period; extern int qp_hist; extern int stdin_interaction; extern int frame_bits_per_raw_sample; extern AVIOContext *progress_avio; extern float max_error_rate; extern char *filter_nbthreads; extern int filter_complex_nbthreads; extern int vstats_version; extern int auto_conversion_filters; extern const AVIOInterruptCB int_cb; extern const OptionDef options[]; #if CONFIG_QSV extern char *qsv_device; #endif extern HWDevice *filter_hw_device; extern int want_sdp; extern unsigned nb_output_dumped; extern int main_return_code; void term_init(void); void term_exit(void); void show_usage(void); void remove_avoptions(AVDictionary **a, AVDictionary *b); void assert_avoptions(AVDictionary *m); int guess_input_channel_layout(InputStream *ist); int configure_filtergraph(FilterGraph *fg); void check_filter_outputs(void); int filtergraph_is_simple(FilterGraph *fg); int init_simple_filtergraph(InputStream *ist, OutputStream *ost); int init_complex_filtergraph(FilterGraph *fg); void sub2video_update(InputStream *ist, int64_t heartbeat_pts, AVSubtitle *sub); int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame); int ffmpeg_parse_options(int argc, char **argv); int videotoolbox_init(AVCodecContext *s); int qsv_init(AVCodecContext *s); HWDevice *hw_device_get_by_name(const char *name); int hw_device_init_from_string(const char *arg, HWDevice **dev); void hw_device_free_all(void); int hw_device_setup_for_decode(InputStream *ist); int hw_device_setup_for_encode(OutputStream *ost); int hw_device_setup_for_filter(FilterGraph *fg); int hwaccel_decode_init(AVCodecContext *avctx); /* open the muxer when all the streams are initialized */ int of_check_init(OutputFile *of); int of_write_trailer(OutputFile *of); void of_close(OutputFile **pof); void of_write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue); #endif /* FFTOOLS_FFMPEG_H */