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avconv.h
Go to the documentation of this file.
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/*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCONV_H
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#define AVCONV_H
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#include "config.h"
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#include <stdint.h>
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#include <stdio.h>
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#if HAVE_PTHREADS
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#include <pthread.h>
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#endif
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#include "
cmdutils.h
"
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#include "
libavformat/avformat.h
"
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#include "
libavformat/avio.h
"
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#include "
libavcodec/avcodec.h
"
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#include "
libavfilter/avfilter.h
"
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#include "
libavfilter/avfiltergraph.h
"
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#include "
libavutil/avutil.h
"
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#include "
libavutil/dict.h
"
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#include "
libavutil/fifo.h
"
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#include "
libavutil/pixfmt.h
"
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#include "
libavutil/rational.h
"
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#define VSYNC_AUTO -1
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#define VSYNC_PASSTHROUGH 0
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#define VSYNC_CFR 1
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#define VSYNC_VFR 2
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/* select an input stream for an output stream */
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typedef
struct
StreamMap
{
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int
disabled
;
/* 1 is this mapping is disabled by a negative map */
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int
file_index
;
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int
stream_index
;
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int
sync_file_index
;
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int
sync_stream_index
;
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char
*
linklabel
;
/* name of an output link, for mapping lavfi outputs */
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}
StreamMap
;
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/* select an input file for an output file */
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typedef
struct
MetadataMap
{
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int
file
;
// file index
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char
type
;
// type of metadata to copy -- (g)lobal, (s)tream, (c)hapter or (p)rogram
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int
index
;
// stream/chapter/program number
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}
MetadataMap
;
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typedef
struct
OptionsContext
{
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OptionGroup
*
g
;
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/* input/output options */
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int64_t
start_time
;
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const
char
*
format
;
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SpecifierOpt
*
codec_names
;
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int
nb_codec_names
;
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SpecifierOpt
*
audio_channels
;
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int
nb_audio_channels
;
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SpecifierOpt
*
audio_sample_rate
;
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int
nb_audio_sample_rate
;
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SpecifierOpt
*
frame_rates
;
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int
nb_frame_rates
;
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SpecifierOpt
*
frame_sizes
;
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int
nb_frame_sizes
;
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SpecifierOpt
*
frame_pix_fmts
;
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int
nb_frame_pix_fmts
;
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/* input options */
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int64_t
input_ts_offset
;
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int
rate_emu
;
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SpecifierOpt
*
ts_scale
;
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int
nb_ts_scale
;
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SpecifierOpt
*
dump_attachment
;
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int
nb_dump_attachment
;
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/* output options */
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StreamMap
*
stream_maps
;
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int
nb_stream_maps
;
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/* first item specifies output metadata, second is input */
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MetadataMap
(*
meta_data_maps
)[2];
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int
nb_meta_data_maps
;
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int
metadata_global_manual
;
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int
metadata_streams_manual
;
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int
metadata_chapters_manual
;
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const
char
**
attachments
;
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int
nb_attachments
;
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int
chapters_input_file
;
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int64_t
recording_time
;
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uint64_t
limit_filesize
;
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float
mux_preload
;
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float
mux_max_delay
;
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int
shortest
;
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int
video_disable
;
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int
audio_disable
;
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int
subtitle_disable
;
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int
data_disable
;
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/* indexed by output file stream index */
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int
*
streamid_map
;
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int
nb_streamid_map
;
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SpecifierOpt
*
metadata
;
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int
nb_metadata
;
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SpecifierOpt
*
max_frames
;
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int
nb_max_frames
;
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SpecifierOpt
*
bitstream_filters
;
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int
nb_bitstream_filters
;
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SpecifierOpt
*
codec_tags
;
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int
nb_codec_tags
;
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SpecifierOpt
*
sample_fmts
;
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int
nb_sample_fmts
;
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SpecifierOpt
*
qscale
;
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int
nb_qscale
;
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SpecifierOpt
*
forced_key_frames
;
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int
nb_forced_key_frames
;
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SpecifierOpt
*
force_fps
;
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int
nb_force_fps
;
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SpecifierOpt
*
frame_aspect_ratios
;
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int
nb_frame_aspect_ratios
;
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SpecifierOpt
*
rc_overrides
;
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int
nb_rc_overrides
;
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SpecifierOpt
*
intra_matrices
;
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int
nb_intra_matrices
;
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SpecifierOpt
*
inter_matrices
;
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int
nb_inter_matrices
;
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SpecifierOpt
*
top_field_first
;
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int
nb_top_field_first
;
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SpecifierOpt
*
metadata_map
;
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int
nb_metadata_map
;
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SpecifierOpt
*
presets
;
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int
nb_presets
;
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SpecifierOpt
*
copy_initial_nonkeyframes
;
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int
nb_copy_initial_nonkeyframes
;
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SpecifierOpt
*
filters
;
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int
nb_filters
;
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SpecifierOpt
*
pass
;
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int
nb_pass
;
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SpecifierOpt
*
passlogfiles
;
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int
nb_passlogfiles
;
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}
OptionsContext
;
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typedef
struct
InputFilter
{
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AVFilterContext
*
filter
;
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struct
InputStream
*
ist
;
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struct
FilterGraph
*
graph
;
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uint8_t
*
name
;
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}
InputFilter
;
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typedef
struct
OutputFilter
{
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AVFilterContext
*
filter
;
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struct
OutputStream
*
ost
;
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struct
FilterGraph
*
graph
;
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uint8_t
*
name
;
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/* temporary storage until stream maps are processed */
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AVFilterInOut
*
out_tmp
;
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}
OutputFilter
;
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typedef
struct
FilterGraph
{
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int
index
;
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const
char
*
graph_desc
;
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AVFilterGraph
*
graph
;
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InputFilter
**
inputs
;
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int
nb_inputs
;
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OutputFilter
**
outputs
;
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int
nb_outputs
;
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}
FilterGraph
;
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typedef
struct
InputStream
{
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int
file_index
;
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AVStream
*
st
;
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int
discard
;
/* true if stream data should be discarded */
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int
decoding_needed
;
/* true if the packets must be decoded in 'raw_fifo' */
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AVCodec
*
dec
;
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AVFrame
*
decoded_frame
;
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int64_t
start
;
/* time when read started */
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/* predicted dts of the next packet read for this stream or (when there are
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* several frames in a packet) of the next frame in current packet */
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int64_t
next_dts
;
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/* dts of the last packet read for this stream */
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int64_t
last_dts
;
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PtsCorrectionContext
pts_ctx
;
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double
ts_scale
;
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int
is_start
;
/* is 1 at the start and after a discontinuity */
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int
showed_multi_packet_warning
;
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AVDictionary
*
opts
;
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AVRational
framerate
;
/* framerate forced with -r */
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int
resample_height
;
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int
resample_width
;
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int
resample_pix_fmt
;
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int
resample_sample_fmt
;
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int
resample_sample_rate
;
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int
resample_channels
;
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uint64_t
resample_channel_layout
;
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/* a pool of free buffers for decoded data */
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FrameBuffer
*
buffer_pool
;
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/* decoded data from this stream goes into all those filters
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* currently video and audio only */
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InputFilter
**
filters
;
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int
nb_filters
;
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}
InputStream
;
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typedef
struct
InputFile
{
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AVFormatContext
*
ctx
;
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int
eof_reached
;
/* true if eof reached */
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int
eagain
;
/* true if last read attempt returned EAGAIN */
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int
ist_index
;
/* index of first stream in ist_table */
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int64_t
ts_offset
;
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int
nb_streams
;
/* number of stream that avconv is aware of; may be different
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from ctx.nb_streams if new streams appear during av_read_frame() */
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int
rate_emu
;
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#if HAVE_PTHREADS
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pthread_t
thread;
/* thread reading from this file */
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int
finished;
/* the thread has exited */
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int
joined;
/* the thread has been joined */
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pthread_mutex_t
fifo_lock;
/* lock for access to fifo */
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pthread_cond_t
fifo_cond;
/* the main thread will signal on this cond after reading from fifo */
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AVFifoBuffer
*fifo;
/* demuxed packets are stored here; freed by the main thread */
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#endif
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}
InputFile
;
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typedef
struct
OutputStream
{
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int
file_index
;
/* file index */
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int
index
;
/* stream index in the output file */
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int
source_index
;
/* InputStream index */
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AVStream
*
st
;
/* stream in the output file */
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int
encoding_needed
;
/* true if encoding needed for this stream */
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int
frame_number
;
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/* input pts and corresponding output pts
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for A/V sync */
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// double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
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struct
InputStream
*
sync_ist
;
/* input stream to sync against */
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int64_t
sync_opts
;
/* output frame counter, could be changed to some true timestamp */
// FIXME look at frame_number
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/* pts of the first frame encoded for this stream, used for limiting
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* recording time */
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int64_t
first_pts
;
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AVBitStreamFilterContext
*
bitstream_filters
;
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AVCodec
*
enc
;
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int64_t
max_frames
;
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AVFrame
*
filtered_frame
;
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/* video only */
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AVRational
frame_rate
;
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int
force_fps
;
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int
top_field_first
;
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float
frame_aspect_ratio
;
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/* forced key frames */
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int64_t *
forced_kf_pts
;
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int
forced_kf_count
;
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int
forced_kf_index
;
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char
*
forced_keyframes
;
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char
*
logfile_prefix
;
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FILE *
logfile
;
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OutputFilter
*
filter
;
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char
*
avfilter
;
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int64_t
sws_flags
;
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AVDictionary
*
opts
;
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int
finished
;
/* no more packets should be written for this stream */
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int
stream_copy
;
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const
char
*
attachment_filename
;
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int
copy_initial_nonkeyframes
;
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enum
AVPixelFormat
pix_fmts
[2];
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}
OutputStream
;
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typedef
struct
OutputFile
{
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AVFormatContext
*
ctx
;
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AVDictionary
*
opts
;
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int
ost_index
;
/* index of the first stream in output_streams */
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int64_t
recording_time
;
/* desired length of the resulting file in microseconds */
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int64_t
start_time
;
/* start time in microseconds */
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uint64_t
limit_filesize
;
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int
shortest
;
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}
OutputFile
;
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extern
InputStream
**
input_streams
;
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extern
int
nb_input_streams
;
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extern
InputFile
**
input_files
;
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extern
int
nb_input_files
;
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extern
OutputStream
**
output_streams
;
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extern
int
nb_output_streams
;
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extern
OutputFile
**
output_files
;
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extern
int
nb_output_files
;
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extern
FilterGraph
**
filtergraphs
;
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extern
int
nb_filtergraphs
;
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extern
char
*
vstats_filename
;
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extern
float
audio_drift_threshold
;
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extern
float
dts_delta_threshold
;
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extern
int
audio_volume
;
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extern
int
audio_sync_method
;
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extern
int
video_sync_method
;
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extern
int
do_benchmark
;
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extern
int
do_deinterlace
;
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extern
int
do_hex_dump
;
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extern
int
do_pkt_dump
;
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extern
int
copy_ts
;
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extern
int
copy_tb
;
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extern
int
exit_on_error
;
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extern
int
print_stats
;
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extern
int
qp_hist
;
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extern
const
AVIOInterruptCB
int_cb
;
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extern
const
OptionDef
options
[];
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void
reset_options
(
OptionsContext
*o);
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void
show_usage
(
void
);
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int
opt_cpuflags
(
void
*optctx,
const
char
*opt,
const
char
*arg);
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void
opt_output_file
(
void
*optctx,
const
char
*filename);
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void
assert_avoptions
(
AVDictionary
*m);
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int
guess_input_channel_layout
(
InputStream
*ist);
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int
configure_filtergraph
(
FilterGraph
*fg);
362
int
configure_output_filter
(
FilterGraph
*fg,
OutputFilter
*ofilter,
AVFilterInOut
*out);
363
int
ist_in_filtergraph
(
FilterGraph
*fg,
InputStream
*ist);
364
FilterGraph
*
init_simple_filtergraph
(
InputStream
*ist,
OutputStream
*ost);
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int
avconv_parse_options
(
int
argc,
char
**argv);
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#endif
/* AVCONV_H */