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submodule
ffmpeg
Commits
1b8c9271
Commit
1b8c9271
authored
Jan 30, 2011
by
Stefano Sabatini
Committed by
Anton Khirnov
May 09, 2012
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lavfi: add avfilter_get_audio_buffer_ref_from_arrays().
Signed-off-by:
Anton Khirnov
<
anton@khirnov.net
>
parent
9453c9e1
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2 changed files
with
86 additions
and
0 deletions
+86
-0
avfilter.c
libavfilter/avfilter.c
+68
-0
avfilter.h
libavfilter/avfilter.h
+18
-0
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libavfilter/avfilter.c
View file @
1b8c9271
...
...
@@ -385,6 +385,74 @@ AVFilterBufferRef *avfilter_get_audio_buffer(AVFilterLink *link, int perms,
return
ret
;
}
AVFilterBufferRef
*
avfilter_get_audio_buffer_ref_from_arrays
(
uint8_t
**
data
,
int
linesize
,
int
perms
,
int
nb_samples
,
enum
AVSampleFormat
sample_fmt
,
uint64_t
channel_layout
)
{
int
planes
;
AVFilterBuffer
*
samples
=
av_mallocz
(
sizeof
(
*
samples
));
AVFilterBufferRef
*
samplesref
=
av_mallocz
(
sizeof
(
*
samplesref
));
if
(
!
samples
||
!
samplesref
)
goto
fail
;
samplesref
->
buf
=
samples
;
samplesref
->
buf
->
free
=
ff_avfilter_default_free_buffer
;
if
(
!
(
samplesref
->
audio
=
av_mallocz
(
sizeof
(
*
samplesref
->
audio
))))
goto
fail
;
samplesref
->
audio
->
nb_samples
=
nb_samples
;
samplesref
->
audio
->
channel_layout
=
channel_layout
;
samplesref
->
audio
->
planar
=
av_sample_fmt_is_planar
(
sample_fmt
);
planes
=
samplesref
->
audio
->
planar
?
av_get_channel_layout_nb_channels
(
channel_layout
)
:
1
;
/* make sure the buffer gets read permission or it's useless for output */
samplesref
->
perms
=
perms
|
AV_PERM_READ
;
samples
->
refcount
=
1
;
samplesref
->
type
=
AVMEDIA_TYPE_AUDIO
;
samplesref
->
format
=
sample_fmt
;
memcpy
(
samples
->
data
,
data
,
FFMIN
(
FF_ARRAY_ELEMS
(
samples
->
data
),
planes
)
*
sizeof
(
samples
->
data
[
0
]));
memcpy
(
samplesref
->
data
,
samples
->
data
,
sizeof
(
samples
->
data
));
samples
->
linesize
[
0
]
=
samplesref
->
linesize
[
0
]
=
linesize
;
if
(
planes
>
FF_ARRAY_ELEMS
(
samples
->
data
))
{
samples
->
extended_data
=
av_mallocz
(
sizeof
(
*
samples
->
extended_data
)
*
planes
);
samplesref
->
extended_data
=
av_mallocz
(
sizeof
(
*
samplesref
->
extended_data
)
*
planes
);
if
(
!
samples
->
extended_data
||
!
samplesref
->
extended_data
)
goto
fail
;
memcpy
(
samples
->
extended_data
,
data
,
sizeof
(
*
data
)
*
planes
);
memcpy
(
samplesref
->
extended_data
,
data
,
sizeof
(
*
data
)
*
planes
);
}
else
{
samples
->
extended_data
=
samples
->
data
;
samplesref
->
extended_data
=
samplesref
->
data
;
}
return
samplesref
;
fail:
if
(
samples
&&
samples
->
extended_data
!=
samples
->
data
)
av_freep
(
&
samples
->
extended_data
);
if
(
samplesref
)
{
av_freep
(
&
samplesref
->
audio
);
if
(
samplesref
->
extended_data
!=
samplesref
->
data
)
av_freep
(
&
samplesref
->
extended_data
);
}
av_freep
(
&
samplesref
);
av_freep
(
&
samples
);
return
NULL
;
}
int
avfilter_request_frame
(
AVFilterLink
*
link
)
{
FF_DPRINTF_START
(
NULL
,
request_frame
);
ff_dlog_link
(
NULL
,
link
,
1
);
...
...
libavfilter/avfilter.h
View file @
1b8c9271
...
...
@@ -700,6 +700,24 @@ AVFilterBufferRef *avfilter_get_audio_buffer(AVFilterLink *link, int perms,
enum
AVSampleFormat
sample_fmt
,
int
size
,
uint64_t
channel_layout
,
int
planar
);
/**
* Create an audio buffer reference wrapped around an already
* allocated samples buffer.
*
* @param data pointers to the samples plane buffers
* @param linesize linesize for the samples plane buffers
* @param perms the required access permissions
* @param nb_samples number of samples per channel
* @param sample_fmt the format of each sample in the buffer to allocate
* @param channel_layout the channel layout of the buffer
*/
AVFilterBufferRef
*
avfilter_get_audio_buffer_ref_from_arrays
(
uint8_t
**
data
,
int
linesize
,
int
perms
,
int
nb_samples
,
enum
AVSampleFormat
sample_fmt
,
uint64_t
channel_layout
);
/**
* Request an input frame from the filter at the other end of the link.
*
...
...
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