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 */
273 // when forcing constant input framerate through -r,
274 // this contains the pts that will be given to the next decoded frame
275 int64_t cfr_next_pts
;
277 int64_t nb_samples
; /* number of samples in the last decoded audio frame before looping */
278 PtsCorrectionContext pts_ctx
;
280 AVDictionary
*decoder_opts
;
281 AVRational framerate
; /* framerate forced with -r */
285 /* decoded data from this stream goes into all those filters
286 * currently video and audio only */
287 InputFilter
**filters
;
290 /* hwaccel options */
291 enum HWAccelID hwaccel_id
;
292 char *hwaccel_device
;
293 enum AVPixelFormat hwaccel_output_format
;
295 /* hwaccel context */
296 enum HWAccelID active_hwaccel_id
;
298 void (*hwaccel_uninit
)(AVCodecContext
*s
);
299 int (*hwaccel_get_buffer
)(AVCodecContext
*s
, AVFrame
*frame
, int flags
);
300 int (*hwaccel_retrieve_data
)(AVCodecContext
*s
, AVFrame
*frame
);
301 enum AVPixelFormat hwaccel_pix_fmt
;
302 enum AVPixelFormat hwaccel_retrieved_pix_fmt
;
303 AVBufferRef
*hw_frames_ctx
;
306 // combined size of all the packets read
308 /* number of packets successfully read for this stream */
310 // number of frames/samples retrieved from the decoder
311 uint64_t frames_decoded
;
312 uint64_t samples_decoded
;
315 typedef struct InputFile
{
316 AVFormatContext
*ctx
;
317 int eof_reached
; /* true if eof reached */
318 int eagain
; /* true if last read attempt returned EAGAIN */
319 int ist_index
; /* index of first stream in ist_table */
320 int loop
; /* set number of times input stream should be looped */
321 int64_t duration
; /* actual duration of the longest stream in a file
322 at the moment when looping happens */
323 AVRational time_base
; /* time base of the duration */
325 int64_t start_time
; /* user-specified start time in AV_TIME_BASE or AV_NOPTS_VALUE */
326 int64_t recording_time
;
327 int nb_streams
; /* number of stream that avconv is aware of; may be different
328 from ctx.nb_streams if new streams appear during av_read_frame() */
333 pthread_t thread
; /* thread reading from this file */
334 int finished
; /* the thread has exited */
335 int joined
; /* the thread has been joined */
336 pthread_mutex_t fifo_lock
; /* lock for access to fifo */
337 pthread_cond_t fifo_cond
; /* the main thread will signal on this cond after reading from fifo */
338 AVFifoBuffer
*fifo
; /* demuxed packets are stored here; freed by the main thread */
342 typedef struct OutputStream
{
343 int file_index
; /* file index */
344 int index
; /* stream index in the output file */
345 int source_index
; /* InputStream index */
346 AVStream
*st
; /* stream in the output file */
347 int encoding_needed
; /* true if encoding needed for this stream */
349 /* input pts and corresponding output pts
351 // double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
352 struct InputStream
*sync_ist
; /* input stream to sync against */
353 int64_t sync_opts
; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
354 /* pts of the first frame encoded for this stream, used for limiting
357 /* dts of the last packet sent to the muxer */
358 int64_t last_mux_dts
;
359 // the timebase of the packets sent to the muxer
360 AVRational mux_timebase
;
362 int nb_bitstream_filters
;
363 const AVBitStreamFilter
**bitstream_filters
;
364 AVBSFContext
**bsf_ctx
;
366 AVCodecContext
*enc_ctx
;
369 AVFrame
*filtered_frame
;
374 AVRational frame_rate
;
378 float frame_aspect_ratio
;
380 /* forced key frames */
381 int64_t *forced_kf_pts
;
384 char *forced_keyframes
;
386 char *logfile_prefix
;
389 OutputFilter
*filter
;
393 AVDictionary
*encoder_opts
;
394 AVDictionary
*resample_opts
;
395 int finished
; /* no more packets should be written for this stream */
398 // init_output_stream() has been called for this stream
399 // The encoder and the bistream filters have been initialized and the stream
400 // parameters are set in the AVStream.
403 const char *attachment_filename
;
404 int copy_initial_nonkeyframes
;
406 enum AVPixelFormat pix_fmts
[2];
408 AVCodecParserContext
*parser
;
409 AVCodecContext
*parser_avctx
;
412 // combined size of all the packets written
414 // number of packets send to the muxer
415 uint64_t packets_written
;
416 // number of frames/samples sent to the encoder
417 uint64_t frames_encoded
;
418 uint64_t samples_encoded
;
420 /* packet quality factor */
423 int max_muxing_queue_size
;
425 /* the packets are buffered here until the muxer is ready to be initialized */
426 AVFifoBuffer
*muxing_queue
;
429 typedef struct OutputFile
{
430 AVFormatContext
*ctx
;
432 int ost_index
; /* index of the first stream in output_streams */
433 int64_t recording_time
; /* desired length of the resulting file in microseconds */
434 int64_t start_time
; /* start time in microseconds */
435 uint64_t limit_filesize
;
442 extern InputStream
**input_streams
;
443 extern int nb_input_streams
;
444 extern InputFile
**input_files
;
445 extern int nb_input_files
;
447 extern OutputStream
**output_streams
;
448 extern int nb_output_streams
;
449 extern OutputFile
**output_files
;
450 extern int nb_output_files
;
452 extern FilterGraph
**filtergraphs
;
453 extern int nb_filtergraphs
;
455 extern char *vstats_filename
;
457 extern float audio_drift_threshold
;
458 extern float dts_delta_threshold
;
460 extern int audio_volume
;
461 extern int audio_sync_method
;
462 extern int video_sync_method
;
463 extern int do_benchmark
;
464 extern int do_deinterlace
;
465 extern int do_hex_dump
;
466 extern int do_pkt_dump
;
469 extern int exit_on_error
;
470 extern int print_stats
;
473 extern const AVIOInterruptCB int_cb
;
475 extern const OptionDef options
[];
477 extern const HWAccel hwaccels
[];
478 extern int hwaccel_lax_profile_check
;
479 extern AVBufferRef
*hw_device_ctx
;
481 void reset_options(OptionsContext
*o
);
482 void show_usage(void);
484 void opt_output_file(void *optctx
, const char *filename
);
486 void assert_avoptions(AVDictionary
*m
);
488 int guess_input_channel_layout(InputStream
*ist
);
490 int configure_filtergraph(FilterGraph
*fg
);
491 int configure_output_filter(FilterGraph
*fg
, OutputFilter
*ofilter
, AVFilterInOut
*out
);
492 int ist_in_filtergraph(FilterGraph
*fg
, InputStream
*ist
);
493 int filtergraph_is_simple(FilterGraph
*fg
);
494 int init_simple_filtergraph(InputStream
*ist
, OutputStream
*ost
);
495 int init_complex_filtergraph(FilterGraph
*fg
);
497 int ifilter_parameters_from_frame(InputFilter
*ifilter
, const AVFrame
*frame
);
499 int avconv_parse_options(int argc
, char **argv
);
501 int vdpau_init(AVCodecContext
*s
);
502 int dxva2_init(AVCodecContext
*s
);
503 int vda_init(AVCodecContext
*s
);
504 int qsv_init(AVCodecContext
*s
);
505 int qsv_transcode_init(OutputStream
*ost
);
506 int vaapi_decode_init(AVCodecContext
*avctx
);
507 int vaapi_device_init(const char *device
);
509 #endif /* AVCONV_H */