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
59 typedef struct HWAccel {
61 int (*init)(AVCodecContext *s);
63 enum AVPixelFormat pix_fmt;
66 /* select an input stream for an output stream */
67 typedef struct StreamMap {
68 int disabled; /* 1 is this mapping is disabled by a negative map */
72 int sync_stream_index;
73 char *linklabel; /* name of an output link, for mapping lavfi outputs */
76 /* select an input file for an output file */
77 typedef struct MetadataMap {
78 int file; // file index
79 char type; // type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
80 int index; // stream/chapter/program number
83 typedef struct OptionsContext {
86 /* input/output options */
90 SpecifierOpt *codec_names;
92 SpecifierOpt *audio_channels;
93 int nb_audio_channels;
94 SpecifierOpt *audio_sample_rate;
95 int nb_audio_sample_rate;
96 SpecifierOpt *frame_rates;
98 SpecifierOpt *frame_sizes;
100 SpecifierOpt *frame_pix_fmts;
101 int nb_frame_pix_fmts;
104 int64_t input_ts_offset;
108 SpecifierOpt *ts_scale;
110 SpecifierOpt *dump_attachment;
111 int nb_dump_attachment;
112 SpecifierOpt *hwaccels;
114 SpecifierOpt *hwaccel_devices;
115 int nb_hwaccel_devices;
118 StreamMap *stream_maps;
120 /* first item specifies output metadata, second is input */
121 MetadataMap (*meta_data_maps)[2];
122 int nb_meta_data_maps;
123 int metadata_global_manual;
124 int metadata_streams_manual;
125 int metadata_chapters_manual;
126 const char **attachments;
129 int chapters_input_file;
131 int64_t recording_time;
132 uint64_t limit_filesize;
139 int subtitle_disable;
142 /* indexed by output file stream index */
146 SpecifierOpt *metadata;
148 SpecifierOpt *max_frames;
150 SpecifierOpt *bitstream_filters;
151 int nb_bitstream_filters;
152 SpecifierOpt *codec_tags;
154 SpecifierOpt *sample_fmts;
156 SpecifierOpt *qscale;
158 SpecifierOpt *forced_key_frames;
159 int nb_forced_key_frames;
160 SpecifierOpt *force_fps;
162 SpecifierOpt *frame_aspect_ratios;
163 int nb_frame_aspect_ratios;
164 SpecifierOpt *rc_overrides;
166 SpecifierOpt *intra_matrices;
167 int nb_intra_matrices;
168 SpecifierOpt *inter_matrices;
169 int nb_inter_matrices;
170 SpecifierOpt *top_field_first;
171 int nb_top_field_first;
172 SpecifierOpt *metadata_map;
174 SpecifierOpt *presets;
176 SpecifierOpt *copy_initial_nonkeyframes;
177 int nb_copy_initial_nonkeyframes;
178 SpecifierOpt *filters;
180 SpecifierOpt *filter_scripts;
181 int nb_filter_scripts;
184 SpecifierOpt *passlogfiles;
188 typedef struct InputFilter {
189 AVFilterContext *filter;
190 struct InputStream *ist;
191 struct FilterGraph *graph;
195 typedef struct OutputFilter {
196 AVFilterContext *filter;
197 struct OutputStream *ost;
198 struct FilterGraph *graph;
201 /* temporary storage until stream maps are processed */
202 AVFilterInOut *out_tmp;
205 typedef struct FilterGraph {
207 const char *graph_desc;
209 AVFilterGraph *graph;
211 InputFilter **inputs;
213 OutputFilter **outputs;
217 typedef struct InputStream {
220 int discard; /* true if stream data should be discarded */
221 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
223 AVFrame *decoded_frame;
224 AVFrame *filter_frame; /* a ref of decoded_frame, to be sent to filters */
226 int64_t start; /* time when read started */
227 /* predicted dts of the next packet read for this stream or (when there are
228 * several frames in a packet) of the next frame in current packet */
230 /* dts of the last packet read for this stream */
232 PtsCorrectionContext pts_ctx;
234 int showed_multi_packet_warning;
235 AVDictionary *decoder_opts;
236 AVRational framerate; /* framerate forced with -r */
240 int resample_pix_fmt;
242 int resample_sample_fmt;
243 int resample_sample_rate;
244 int resample_channels;
245 uint64_t resample_channel_layout;
247 /* decoded data from this stream goes into all those filters
248 * currently video and audio only */
249 InputFilter **filters;
252 /* hwaccel options */
253 enum HWAccelID hwaccel_id;
254 char *hwaccel_device;
256 /* hwaccel context */
257 enum HWAccelID active_hwaccel_id;
259 void (*hwaccel_uninit)(AVCodecContext *s);
260 int (*hwaccel_get_buffer)(AVCodecContext *s, AVFrame *frame, int flags);
261 int (*hwaccel_retrieve_data)(AVCodecContext *s, AVFrame *frame);
262 enum AVPixelFormat hwaccel_pix_fmt;
263 enum AVPixelFormat hwaccel_retrieved_pix_fmt;
266 // combined size of all the packets read
268 /* number of packets successfully read for this stream */
270 // number of frames/samples retrieved from the decoder
271 uint64_t frames_decoded;
272 uint64_t samples_decoded;
275 typedef struct InputFile {
276 AVFormatContext *ctx;
277 int eof_reached; /* true if eof reached */
278 int eagain; /* true if last read attempt returned EAGAIN */
279 int ist_index; /* index of first stream in ist_table */
281 int64_t start_time; /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */
282 int64_t recording_time;
283 int nb_streams; /* number of stream that avconv is aware of; may be different
284 from ctx.nb_streams if new streams appear during av_read_frame() */
289 pthread_t thread; /* thread reading from this file */
290 int finished; /* the thread has exited */
291 int joined; /* the thread has been joined */
292 pthread_mutex_t fifo_lock; /* lock for access to fifo */
293 pthread_cond_t fifo_cond; /* the main thread will signal on this cond after reading from fifo */
294 AVFifoBuffer *fifo; /* demuxed packets are stored here; freed by the main thread */
298 typedef struct OutputStream {
299 int file_index; /* file index */
300 int index; /* stream index in the output file */
301 int source_index; /* InputStream index */
302 AVStream *st; /* stream in the output file */
303 int encoding_needed; /* true if encoding needed for this stream */
305 /* input pts and corresponding output pts
307 // double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
308 struct InputStream *sync_ist; /* input stream to sync against */
309 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
310 /* pts of the first frame encoded for this stream, used for limiting
313 /* dts of the last packet sent to the muxer */
314 int64_t last_mux_dts;
315 AVBitStreamFilterContext *bitstream_filters;
318 AVFrame *filtered_frame;
321 AVRational frame_rate;
325 float frame_aspect_ratio;
327 /* forced key frames */
328 int64_t *forced_kf_pts;
331 char *forced_keyframes;
333 char *logfile_prefix;
336 OutputFilter *filter;
340 AVDictionary *encoder_opts;
341 AVDictionary *resample_opts;
342 int finished; /* no more packets should be written for this stream */
344 const char *attachment_filename;
345 int copy_initial_nonkeyframes;
347 enum AVPixelFormat pix_fmts[2];
349 AVCodecParserContext *parser;
352 // combined size of all the packets written
354 // number of packets send to the muxer
355 uint64_t packets_written;
356 // number of frames/samples sent to the encoder
357 uint64_t frames_encoded;
358 uint64_t samples_encoded;
361 typedef struct OutputFile {
362 AVFormatContext *ctx;
364 int ost_index; /* index of the first stream in output_streams */
365 int64_t recording_time; /* desired length of the resulting file in microseconds */
366 int64_t start_time; /* start time in microseconds */
367 uint64_t limit_filesize;
372 extern InputStream **input_streams;
373 extern int nb_input_streams;
374 extern InputFile **input_files;
375 extern int nb_input_files;
377 extern OutputStream **output_streams;
378 extern int nb_output_streams;
379 extern OutputFile **output_files;
380 extern int nb_output_files;
382 extern FilterGraph **filtergraphs;
383 extern int nb_filtergraphs;
385 extern char *vstats_filename;
387 extern float audio_drift_threshold;
388 extern float dts_delta_threshold;
390 extern int audio_volume;
391 extern int audio_sync_method;
392 extern int video_sync_method;
393 extern int do_benchmark;
394 extern int do_deinterlace;
395 extern int do_hex_dump;
396 extern int do_pkt_dump;
399 extern int exit_on_error;
400 extern int print_stats;
403 extern const AVIOInterruptCB int_cb;
405 extern const OptionDef options[];
407 extern const HWAccel hwaccels[];
409 void reset_options(OptionsContext *o);
410 void show_usage(void);
412 void opt_output_file(void *optctx, const char *filename);
414 void assert_avoptions(AVDictionary *m);
416 int guess_input_channel_layout(InputStream *ist);
418 int configure_filtergraph(FilterGraph *fg);
419 int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out);
420 int ist_in_filtergraph(FilterGraph *fg, InputStream *ist);
421 FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost);
423 int avconv_parse_options(int argc, char **argv);
425 int vdpau_init(AVCodecContext *s);
426 int dxva2_init(AVCodecContext *s);
427 int vda_init(AVCodecContext *s);
429 #endif /* AVCONV_H */