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submodule
ffmpeg
Commits
0bafe049
Commit
0bafe049
authored
Nov 11, 2011
by
Justin Ruggles
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api-example: update to use avcodec_decode_audio4()
parent
f199f385
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1 changed file
with
20 additions
and
9 deletions
+20
-9
api-example.c
libavcodec/api-example.c
+20
-9
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libavcodec/api-example.c
View file @
0bafe049
...
...
@@ -38,6 +38,7 @@
#include "libavcodec/avcodec.h"
#include "libavutil/mathematics.h"
#include "libavutil/samplefmt.h"
#define INBUF_SIZE 4096
#define AUDIO_INBUF_SIZE 20480
...
...
@@ -118,11 +119,11 @@ static void audio_decode_example(const char *outfilename, const char *filename)
{
AVCodec
*
codec
;
AVCodecContext
*
c
=
NULL
;
int
out_size
,
len
;
int
len
;
FILE
*
f
,
*
outfile
;
uint8_t
*
outbuf
;
uint8_t
inbuf
[
AUDIO_INBUF_SIZE
+
FF_INPUT_BUFFER_PADDING_SIZE
];
AVPacket
avpkt
;
AVFrame
*
decoded_frame
=
NULL
;
av_init_packet
(
&
avpkt
);
...
...
@@ -143,8 +144,6 @@ static void audio_decode_example(const char *outfilename, const char *filename)
exit
(
1
);
}
outbuf
=
malloc
(
AVCODEC_MAX_AUDIO_FRAME_SIZE
);
f
=
fopen
(
filename
,
"rb"
);
if
(
!
f
)
{
fprintf
(
stderr
,
"could not open %s
\n
"
,
filename
);
...
...
@@ -161,15 +160,27 @@ static void audio_decode_example(const char *outfilename, const char *filename)
avpkt
.
size
=
fread
(
inbuf
,
1
,
AUDIO_INBUF_SIZE
,
f
);
while
(
avpkt
.
size
>
0
)
{
out_size
=
AVCODEC_MAX_AUDIO_FRAME_SIZE
;
len
=
avcodec_decode_audio3
(
c
,
(
short
*
)
outbuf
,
&
out_size
,
&
avpkt
);
int
got_frame
=
0
;
if
(
!
decoded_frame
)
{
if
(
!
(
decoded_frame
=
avcodec_alloc_frame
()))
{
fprintf
(
stderr
,
"out of memory
\n
"
);
exit
(
1
);
}
}
else
avcodec_get_frame_defaults
(
decoded_frame
);
len
=
avcodec_decode_audio4
(
c
,
decoded_frame
,
&
got_frame
,
&
avpkt
);
if
(
len
<
0
)
{
fprintf
(
stderr
,
"Error while decoding
\n
"
);
exit
(
1
);
}
if
(
out_size
>
0
)
{
if
(
got_frame
)
{
/* if a frame has been decoded, output it */
fwrite
(
outbuf
,
1
,
out_size
,
outfile
);
int
data_size
=
av_samples_get_buffer_size
(
NULL
,
c
->
channels
,
decoded_frame
->
nb_samples
,
c
->
sample_fmt
,
1
);
fwrite
(
decoded_frame
->
data
[
0
],
1
,
data_size
,
outfile
);
}
avpkt
.
size
-=
len
;
avpkt
.
data
+=
len
;
...
...
@@ -189,10 +200,10 @@ static void audio_decode_example(const char *outfilename, const char *filename)
fclose
(
outfile
);
fclose
(
f
);
free
(
outbuf
);
avcodec_close
(
c
);
av_free
(
c
);
av_free
(
decoded_frame
);
}
/*
...
...
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