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"
39 #include "libavfilter/avfiltergraph.h"
41 #include "libavutil/avutil.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/fifo.h"
44 #include "libavutil/pixfmt.h"
45 #include "libavutil/rational.h"
48 #define VSYNC_PASSTHROUGH 0
52 /* select an input stream for an output stream */
53 typedef struct StreamMap
{
54 int disabled
; /* 1 is this mapping is disabled by a negative map */
58 int sync_stream_index
;
59 char *linklabel
; /* name of an output link, for mapping lavfi outputs */
62 /* select an input file for an output file */
63 typedef struct MetadataMap
{
64 int file
; // file index
65 char type
; // type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
66 int index
; // stream/chapter/program number
69 typedef struct OptionsContext
{
70 /* input/output options */
74 SpecifierOpt
*codec_names
;
76 SpecifierOpt
*audio_channels
;
77 int nb_audio_channels
;
78 SpecifierOpt
*audio_sample_rate
;
79 int nb_audio_sample_rate
;
80 SpecifierOpt
*frame_rates
;
82 SpecifierOpt
*frame_sizes
;
84 SpecifierOpt
*frame_pix_fmts
;
85 int nb_frame_pix_fmts
;
88 int64_t input_ts_offset
;
91 SpecifierOpt
*ts_scale
;
93 SpecifierOpt
*dump_attachment
;
94 int nb_dump_attachment
;
97 StreamMap
*stream_maps
;
99 /* first item specifies output metadata, second is input */
100 MetadataMap (*meta_data_maps
)[2];
101 int nb_meta_data_maps
;
102 int metadata_global_manual
;
103 int metadata_streams_manual
;
104 int metadata_chapters_manual
;
105 const char **attachments
;
108 int chapters_input_file
;
110 int64_t recording_time
;
111 uint64_t limit_filesize
;
118 int subtitle_disable
;
121 /* indexed by output file stream index */
125 SpecifierOpt
*metadata
;
127 SpecifierOpt
*max_frames
;
129 SpecifierOpt
*bitstream_filters
;
130 int nb_bitstream_filters
;
131 SpecifierOpt
*codec_tags
;
133 SpecifierOpt
*sample_fmts
;
135 SpecifierOpt
*qscale
;
137 SpecifierOpt
*forced_key_frames
;
138 int nb_forced_key_frames
;
139 SpecifierOpt
*force_fps
;
141 SpecifierOpt
*frame_aspect_ratios
;
142 int nb_frame_aspect_ratios
;
143 SpecifierOpt
*rc_overrides
;
145 SpecifierOpt
*intra_matrices
;
146 int nb_intra_matrices
;
147 SpecifierOpt
*inter_matrices
;
148 int nb_inter_matrices
;
149 SpecifierOpt
*top_field_first
;
150 int nb_top_field_first
;
151 SpecifierOpt
*metadata_map
;
153 SpecifierOpt
*presets
;
155 SpecifierOpt
*copy_initial_nonkeyframes
;
156 int nb_copy_initial_nonkeyframes
;
157 SpecifierOpt
*filters
;
161 SpecifierOpt
*passlogfiles
;
165 typedef struct InputFilter
{
166 AVFilterContext
*filter
;
167 struct InputStream
*ist
;
168 struct FilterGraph
*graph
;
172 typedef struct OutputFilter
{
173 AVFilterContext
*filter
;
174 struct OutputStream
*ost
;
175 struct FilterGraph
*graph
;
178 /* temporary storage until stream maps are processed */
179 AVFilterInOut
*out_tmp
;
182 typedef struct FilterGraph
{
184 const char *graph_desc
;
186 AVFilterGraph
*graph
;
188 InputFilter
**inputs
;
190 OutputFilter
**outputs
;
194 typedef struct InputStream
{
197 int discard
; /* true if stream data should be discarded */
198 int decoding_needed
; /* true if the packets must be decoded in 'raw_fifo' */
200 AVFrame
*decoded_frame
;
202 int64_t start
; /* time when read started */
203 /* predicted dts of the next packet read for this stream or (when there are
204 * several frames in a packet) of the next frame in current packet */
206 /* dts of the last packet read for this stream */
208 PtsCorrectionContext pts_ctx
;
210 int is_start
; /* is 1 at the start and after a discontinuity */
211 int showed_multi_packet_warning
;
213 AVRational framerate
; /* framerate forced with -r */
217 int resample_pix_fmt
;
219 int resample_sample_fmt
;
220 int resample_sample_rate
;
221 int resample_channels
;
222 uint64_t resample_channel_layout
;
224 /* a pool of free buffers for decoded data */
225 FrameBuffer
*buffer_pool
;
227 /* decoded data from this stream goes into all those filters
228 * currently video and audio only */
229 InputFilter
**filters
;
233 typedef struct InputFile
{
234 AVFormatContext
*ctx
;
235 int eof_reached
; /* true if eof reached */
236 int eagain
; /* true if last read attempt returned EAGAIN */
237 int ist_index
; /* index of first stream in ist_table */
239 int nb_streams
; /* number of stream that avconv is aware of; may be different
240 from ctx.nb_streams if new streams appear during av_read_frame() */
244 pthread_t thread
; /* thread reading from this file */
245 int finished
; /* the thread has exited */
246 int joined
; /* the thread has been joined */
247 pthread_mutex_t fifo_lock
; /* lock for access to fifo */
248 pthread_cond_t fifo_cond
; /* the main thread will signal on this cond after reading from fifo */
249 AVFifoBuffer
*fifo
; /* demuxed packets are stored here; freed by the main thread */
253 typedef struct OutputStream
{
254 int file_index
; /* file index */
255 int index
; /* stream index in the output file */
256 int source_index
; /* InputStream index */
257 AVStream
*st
; /* stream in the output file */
258 int encoding_needed
; /* true if encoding needed for this stream */
260 /* input pts and corresponding output pts
262 // double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
263 struct InputStream
*sync_ist
; /* input stream to sync against */
264 int64_t sync_opts
; /* output frame counter, could be changed to some true timestamp */ // FIXME look at frame_number
265 /* pts of the first frame encoded for this stream, used for limiting
268 AVBitStreamFilterContext
*bitstream_filters
;
271 AVFrame
*filtered_frame
;
274 AVRational frame_rate
;
278 float frame_aspect_ratio
;
280 /* forced key frames */
281 int64_t *forced_kf_pts
;
284 char *forced_keyframes
;
286 char *logfile_prefix
;
289 OutputFilter
*filter
;
294 int finished
; /* no more packets should be written for this stream */
296 const char *attachment_filename
;
297 int copy_initial_nonkeyframes
;
299 enum AVPixelFormat pix_fmts
[2];
302 typedef struct OutputFile
{
303 AVFormatContext
*ctx
;
305 int ost_index
; /* index of the first stream in output_streams */
306 int64_t recording_time
; /* desired length of the resulting file in microseconds */
307 int64_t start_time
; /* start time in microseconds */
308 uint64_t limit_filesize
;
313 extern InputStream
**input_streams
;
314 extern int nb_input_streams
;
315 extern InputFile
**input_files
;
316 extern int nb_input_files
;
318 extern OutputStream
**output_streams
;
319 extern int nb_output_streams
;
320 extern OutputFile
**output_files
;
321 extern int nb_output_files
;
323 extern FilterGraph
**filtergraphs
;
324 extern int nb_filtergraphs
;
326 extern char *vstats_filename
;
328 extern float audio_drift_threshold
;
329 extern float dts_delta_threshold
;
331 extern int audio_volume
;
332 extern int audio_sync_method
;
333 extern int video_sync_method
;
334 extern int do_benchmark
;
335 extern int do_deinterlace
;
336 extern int do_hex_dump
;
337 extern int do_pkt_dump
;
340 extern int exit_on_error
;
341 extern int print_stats
;
344 extern const AVIOInterruptCB int_cb
;
346 extern const OptionDef options
[];
348 void reset_options(OptionsContext
*o
);
349 void show_usage(void);
351 int opt_cpuflags(void *optctx
, const char *opt
, const char *arg
);
353 void opt_output_file(void *optctx
, const char *filename
);
355 void assert_avoptions(AVDictionary
*m
);
357 int guess_input_channel_layout(InputStream
*ist
);
359 int configure_filtergraph(FilterGraph
*fg
);
360 int configure_output_filter(FilterGraph
*fg
, OutputFilter
*ofilter
, AVFilterInOut
*out
);
361 int ist_in_filtergraph(FilterGraph
*fg
, InputStream
*ist
);
362 FilterGraph
*init_simple_filtergraph(InputStream
*ist
, OutputStream
*ost
);
364 #endif /* AVCONV_H */