2 * This file is part of Libav.
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.
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.
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
33 #include "libavformat/avformat.h"
34 #include "libavformat/avio.h"
36 #include "libavcodec/avcodec.h"
38 #include "libavfilter/avfilter.h"
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"
47 #define VSYNC_PASSTHROUGH 0
61 typedef struct HWAccel {
63 int (*init)(AVCodecContext *s);
65 enum AVPixelFormat pix_fmt;
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 */
74 int sync_stream_index;
75 char *linklabel; /* name of an output link, for mapping lavfi outputs */
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
85 typedef struct OptionsContext {
88 /* input/output options */
92 SpecifierOpt *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;
100 SpecifierOpt *frame_sizes;
102 SpecifierOpt *frame_pix_fmts;
103 int nb_frame_pix_fmts;
106 int64_t input_ts_offset;
111 SpecifierOpt *ts_scale;
113 SpecifierOpt *dump_attachment;
114 int nb_dump_attachment;
115 SpecifierOpt *hwaccels;
117 SpecifierOpt *hwaccel_devices;
118 int nb_hwaccel_devices;
119 SpecifierOpt *hwaccel_output_formats;
120 int nb_hwaccel_output_formats;
121 SpecifierOpt *autorotate;
125 StreamMap *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;
136 int chapters_input_file;
138 int64_t recording_time;
139 uint64_t limit_filesize;
146 int subtitle_disable;
149 /* indexed by output file stream index */
153 SpecifierOpt *metadata;
155 SpecifierOpt *max_frames;
157 SpecifierOpt *bitstream_filters;
158 int nb_bitstream_filters;
159 SpecifierOpt *codec_tags;
161 SpecifierOpt *sample_fmts;
163 SpecifierOpt *qscale;
165 SpecifierOpt *forced_key_frames;
166 int nb_forced_key_frames;
167 SpecifierOpt *force_fps;
169 SpecifierOpt *frame_aspect_ratios;
170 int nb_frame_aspect_ratios;
171 SpecifierOpt *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;
181 SpecifierOpt *presets;
183 SpecifierOpt *copy_initial_nonkeyframes;
184 int nb_copy_initial_nonkeyframes;
185 SpecifierOpt *filters;
187 SpecifierOpt *filter_scripts;
188 int nb_filter_scripts;
191 SpecifierOpt *passlogfiles;
193 SpecifierOpt *max_muxing_queue_size;
194 int nb_max_muxing_queue_size;
197 typedef struct InputFilter {
198 AVFilterContext *filter;
199 struct InputStream *ist;
200 struct FilterGraph *graph;
203 AVFifoBuffer *frame_queue;
205 // parameters configured for this input
209 AVRational sample_aspect_ratio;
212 uint64_t channel_layout;
214 AVBufferRef *hw_frames_ctx;
219 typedef struct OutputFilter {
220 AVFilterContext *filter;
221 struct OutputStream *ost;
222 struct FilterGraph *graph;
225 /* temporary storage until stream maps are processed */
226 AVFilterInOut *out_tmp;
227 enum AVMediaType type;
229 /* desired output stream properties */
231 AVRational frame_rate;
234 uint64_t channel_layout;
236 // those are only set if no format is specified and the encoder gives us multiple options
238 uint64_t *channel_layouts;
242 typedef struct FilterGraph {
244 const char *graph_desc;
246 AVFilterGraph *graph;
248 InputFilter **inputs;
250 OutputFilter **outputs;
254 typedef struct InputStream {
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;
261 AVFrame *decoded_frame;
262 AVFrame *filter_frame; /* a ref of decoded_frame, to be sent to filters */
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 */
268 /* dts of the last packet read for this stream */
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 int64_t nb_samples; /* number of samples in the last decoded audio frame before looping */
273 PtsCorrectionContext pts_ctx;
275 AVDictionary *decoder_opts;
276 AVRational framerate; /* framerate forced with -r */
280 /* decoded data from this stream goes into all those filters
281 * currently video and audio only */
282 InputFilter **filters;
285 /* hwaccel options */
286 enum HWAccelID hwaccel_id;
287 char *hwaccel_device;
288 enum AVPixelFormat hwaccel_output_format;
290 /* hwaccel context */
291 enum HWAccelID active_hwaccel_id;
293 void (*hwaccel_uninit)(AVCodecContext *s);
294 int (*hwaccel_get_buffer)(AVCodecContext *s, AVFrame *frame, int flags);
295 int (*hwaccel_retrieve_data)(AVCodecContext *s, AVFrame *frame);
296 enum AVPixelFormat hwaccel_pix_fmt;
297 enum AVPixelFormat hwaccel_retrieved_pix_fmt;
298 AVBufferRef *hw_frames_ctx;
301 // combined size of all the packets read
303 /* number of packets successfully read for this stream */
305 // number of frames/samples retrieved from the decoder
306 uint64_t frames_decoded;
307 uint64_t samples_decoded;
310 typedef struct InputFile {
311 AVFormatContext *ctx;
312 int eof_reached; /* true if eof reached */
313 int eagain; /* true if last read attempt returned EAGAIN */
314 int ist_index; /* index of first stream in ist_table */
315 int loop; /* set number of times input stream should be looped */
316 int64_t duration; /* actual duration of the longest stream in a file
317 at the moment when looping happens */
318 AVRational time_base; /* time base of the duration */
320 int64_t start_time; /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */
321 int64_t recording_time;
322 int nb_streams; /* number of stream that avconv is aware of; may be different
323 from ctx.nb_streams if new streams appear during av_read_frame() */
328 pthread_t thread; /* thread reading from this file */
329 int finished; /* the thread has exited */
330 int joined; /* the thread has been joined */
331 pthread_mutex_t fifo_lock; /* lock for access to fifo */
332 pthread_cond_t fifo_cond; /* the main thread will signal on this cond after reading from fifo */
333 AVFifoBuffer *fifo; /* demuxed packets are stored here; freed by the main thread */
337 typedef struct OutputStream {
338 int file_index; /* file index */
339 int index; /* stream index in the output file */
340 int source_index; /* InputStream index */
341 AVStream *st; /* stream in the output file */
342 int encoding_needed; /* true if encoding needed for this stream */
344 /* input pts and corresponding output pts
346 // double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
347 struct InputStream *sync_ist; /* input stream to sync against */
348 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
349 /* pts of the first frame encoded for this stream, used for limiting
352 /* dts of the last packet sent to the muxer */
353 int64_t last_mux_dts;
354 // the timebase of the packets sent to the muxer
355 AVRational mux_timebase;
357 int nb_bitstream_filters;
358 const AVBitStreamFilter **bitstream_filters;
359 AVBSFContext **bsf_ctx;
361 AVCodecContext *enc_ctx;
364 AVFrame *filtered_frame;
369 AVRational frame_rate;
373 float frame_aspect_ratio;
375 /* forced key frames */
376 int64_t *forced_kf_pts;
379 char *forced_keyframes;
381 char *logfile_prefix;
384 OutputFilter *filter;
388 AVDictionary *encoder_opts;
389 AVDictionary *resample_opts;
390 int finished; /* no more packets should be written for this stream */
393 // init_output_stream() has been called for this stream
394 // The encoder and the bistream filters have been initialized and the stream
395 // parameters are set in the AVStream.
398 const char *attachment_filename;
399 int copy_initial_nonkeyframes;
401 enum AVPixelFormat pix_fmts[2];
403 AVCodecParserContext *parser;
404 AVCodecContext *parser_avctx;
407 // combined size of all the packets written
409 // number of packets send to the muxer
410 uint64_t packets_written;
411 // number of frames/samples sent to the encoder
412 uint64_t frames_encoded;
413 uint64_t samples_encoded;
415 /* packet quality factor */
418 int max_muxing_queue_size;
420 /* the packets are buffered here until the muxer is ready to be initialized */
421 AVFifoBuffer *muxing_queue;
424 typedef struct OutputFile {
425 AVFormatContext *ctx;
427 int ost_index; /* index of the first stream in output_streams */
428 int64_t recording_time; /* desired length of the resulting file in microseconds */
429 int64_t start_time; /* start time in microseconds */
430 uint64_t limit_filesize;
437 extern InputStream **input_streams;
438 extern int nb_input_streams;
439 extern InputFile **input_files;
440 extern int nb_input_files;
442 extern OutputStream **output_streams;
443 extern int nb_output_streams;
444 extern OutputFile **output_files;
445 extern int nb_output_files;
447 extern FilterGraph **filtergraphs;
448 extern int nb_filtergraphs;
450 extern char *vstats_filename;
452 extern float audio_drift_threshold;
453 extern float dts_delta_threshold;
455 extern int audio_volume;
456 extern int audio_sync_method;
457 extern int video_sync_method;
458 extern int do_benchmark;
459 extern int do_deinterlace;
460 extern int do_hex_dump;
461 extern int do_pkt_dump;
464 extern int exit_on_error;
465 extern int print_stats;
468 extern const AVIOInterruptCB int_cb;
470 extern const OptionDef options[];
472 extern const HWAccel hwaccels[];
473 extern int hwaccel_lax_profile_check;
474 extern AVBufferRef *hw_device_ctx;
476 void reset_options(OptionsContext *o);
477 void show_usage(void);
479 void opt_output_file(void *optctx, const char *filename);
481 void assert_avoptions(AVDictionary *m);
483 int guess_input_channel_layout(InputStream *ist);
485 int configure_filtergraph(FilterGraph *fg);
486 int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out);
487 int ist_in_filtergraph(FilterGraph *fg, InputStream *ist);
488 int filtergraph_is_simple(FilterGraph *fg);
489 int init_simple_filtergraph(InputStream *ist, OutputStream *ost);
490 int init_complex_filtergraph(FilterGraph *fg);
492 int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame);
494 int avconv_parse_options(int argc, char **argv);
496 int vdpau_init(AVCodecContext *s);
497 int dxva2_init(AVCodecContext *s);
498 int vda_init(AVCodecContext *s);
499 int qsv_init(AVCodecContext *s);
500 int qsv_transcode_init(OutputStream *ost);
501 int vaapi_decode_init(AVCodecContext *avctx);
502 int vaapi_device_init(const char *device);
504 #endif /* AVCONV_H */