mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
548 lines
16 KiB
548 lines
16 KiB
/* |
|
* 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 FFMPEG_H |
|
#define FFMPEG_H |
|
|
|
#include "config.h" |
|
|
|
#include <stdint.h> |
|
#include <stdio.h> |
|
#include <signal.h> |
|
|
|
#if HAVE_PTHREADS |
|
#include <pthread.h> |
|
#endif |
|
|
|
#include "cmdutils.h" |
|
|
|
#include "libavformat/avformat.h" |
|
#include "libavformat/avio.h" |
|
|
|
#include "libavcodec/avcodec.h" |
|
|
|
#include "libavfilter/avfilter.h" |
|
|
|
#include "libavutil/avutil.h" |
|
#include "libavutil/dict.h" |
|
#include "libavutil/eval.h" |
|
#include "libavutil/fifo.h" |
|
#include "libavutil/pixfmt.h" |
|
#include "libavutil/rational.h" |
|
#include "libavutil/threadmessage.h" |
|
|
|
#include "libswresample/swresample.h" |
|
|
|
#define VSYNC_AUTO -1 |
|
#define VSYNC_PASSTHROUGH 0 |
|
#define VSYNC_CFR 1 |
|
#define VSYNC_VFR 2 |
|
#define VSYNC_VSCFR 0xfe |
|
#define VSYNC_DROP 0xff |
|
|
|
#define MAX_STREAMS 1024 /* arbitrary sanity check value */ |
|
|
|
enum HWAccelID { |
|
HWACCEL_NONE = 0, |
|
HWACCEL_AUTO, |
|
HWACCEL_VDPAU, |
|
HWACCEL_DXVA2, |
|
HWACCEL_VDA, |
|
}; |
|
|
|
typedef struct HWAccel { |
|
const char *name; |
|
int (*init)(AVCodecContext *s); |
|
enum HWAccelID id; |
|
enum AVPixelFormat pix_fmt; |
|
} HWAccel; |
|
|
|
/* 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; |
|
int seek_timestamp; |
|
const char *format; |
|
|
|
SpecifierOpt *codec_names; |
|
int nb_codec_names; |
|
SpecifierOpt *audio_channels; |
|
int nb_audio_channels; |
|
SpecifierOpt *audio_sample_rate; |
|
int nb_audio_sample_rate; |
|
SpecifierOpt *frame_rates; |
|
int nb_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 rate_emu; |
|
int accurate_seek; |
|
int thread_queue_size; |
|
|
|
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 *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 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 *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 *guess_layout_max; |
|
int nb_guess_layout_max; |
|
SpecifierOpt *apad; |
|
int nb_apad; |
|
SpecifierOpt *discard; |
|
int nb_discard; |
|
SpecifierOpt *disposition; |
|
int nb_disposition; |
|
} OptionsContext; |
|
|
|
typedef struct InputFilter { |
|
AVFilterContext *filter; |
|
struct InputStream *ist; |
|
struct FilterGraph *graph; |
|
uint8_t *name; |
|
} 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; |
|
} OutputFilter; |
|
|
|
typedef struct FilterGraph { |
|
int index; |
|
const char *graph_desc; |
|
|
|
AVFilterGraph *graph; |
|
int reconfiguration; |
|
|
|
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 |
|
|
|
AVCodecContext *dec_ctx; |
|
AVCodec *dec; |
|
AVFrame *decoded_frame; |
|
AVFrame *filter_frame; /* a ref of decoded_frame, to be sent to filters */ |
|
|
|
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 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; |
|
|
|
double ts_scale; |
|
int saw_first_ts; |
|
int showed_multi_packet_warning; |
|
AVDictionary *decoder_opts; |
|
AVRational framerate; /* framerate forced with -r */ |
|
int top_field_first; |
|
int guess_layout_max; |
|
|
|
int autorotate; |
|
int resample_height; |
|
int resample_width; |
|
int resample_pix_fmt; |
|
|
|
int resample_sample_fmt; |
|
int resample_sample_rate; |
|
int resample_channels; |
|
uint64_t resample_channel_layout; |
|
|
|
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; |
|
AVFrame *frame; |
|
int w, h; |
|
} sub2video; |
|
|
|
int dr1; |
|
|
|
/* 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; |
|
char *hwaccel_device; |
|
|
|
/* hwaccel context */ |
|
enum HWAccelID active_hwaccel_id; |
|
void *hwaccel_ctx; |
|
void (*hwaccel_uninit)(AVCodecContext *s); |
|
int (*hwaccel_get_buffer)(AVCodecContext *s, AVFrame *frame, int flags); |
|
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; |
|
} 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 */ |
|
int64_t input_ts_offset; |
|
int64_t ts_offset; |
|
int64_t last_ts; |
|
int64_t start_time; /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */ |
|
int seek_timestamp; |
|
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; |
|
int accurate_seek; |
|
|
|
#if HAVE_PTHREADS |
|
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 |
|
}; |
|
|
|
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 */ |
|
int 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; |
|
AVBitStreamFilterContext *bitstream_filters; |
|
AVCodecContext *enc_ctx; |
|
AVCodec *enc; |
|
int64_t max_frames; |
|
AVFrame *filtered_frame; |
|
AVFrame *last_frame; |
|
int last_droped; |
|
int last_nb0_frames[3]; |
|
|
|
/* video only */ |
|
AVRational frame_rate; |
|
int force_fps; |
|
int top_field_first; |
|
int rotate_overridden; |
|
|
|
AVRational frame_aspect_ratio; |
|
|
|
/* forced key frames */ |
|
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]; |
|
|
|
/* 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 |
|
|
|
int64_t sws_flags; |
|
AVDictionary *encoder_opts; |
|
AVDictionary *swr_opts; |
|
AVDictionary *resample_opts; |
|
AVDictionary *bsf_args; |
|
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; |
|
const char *attachment_filename; |
|
int copy_initial_nonkeyframes; |
|
int copy_prior_start; |
|
char *disposition; |
|
|
|
int keep_pix_fmt; |
|
|
|
AVCodecParserContext *parser; |
|
|
|
/* 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; |
|
} OutputStream; |
|
|
|
typedef struct OutputFile { |
|
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; |
|
} 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 int 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 print_stats; |
|
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 int vdpau_api_ver; |
|
|
|
extern const AVIOInterruptCB int_cb; |
|
|
|
extern const OptionDef options[]; |
|
extern const HWAccel hwaccels[]; |
|
|
|
|
|
void term_init(void); |
|
void term_exit(void); |
|
|
|
void reset_options(OptionsContext *o, int is_input); |
|
void show_usage(void); |
|
|
|
void opt_output_file(void *optctx, const char *filename); |
|
|
|
void remove_avoptions(AVDictionary **a, AVDictionary *b); |
|
void assert_avoptions(AVDictionary *m); |
|
|
|
int guess_input_channel_layout(InputStream *ist); |
|
|
|
enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *avctx, AVCodec *codec, enum AVPixelFormat target); |
|
void choose_sample_fmt(AVStream *st, AVCodec *codec); |
|
|
|
int configure_filtergraph(FilterGraph *fg); |
|
int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out); |
|
int ist_in_filtergraph(FilterGraph *fg, InputStream *ist); |
|
FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost); |
|
int init_complex_filtergraph(FilterGraph *fg); |
|
|
|
int ffmpeg_parse_options(int argc, char **argv); |
|
|
|
int vdpau_init(AVCodecContext *s); |
|
int dxva2_init(AVCodecContext *s); |
|
int vda_init(AVCodecContext *s); |
|
|
|
#endif /* FFMPEG_H */
|
|
|