Skip to content
Projects
Groups
Snippets
Help
Loading...
Sign in / Register
Toggle navigation
F
ffmpeg
Project
Project
Details
Activity
Cycle Analytics
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Charts
Issues
0
Issues
0
List
Board
Labels
Milestones
Merge Requests
0
Merge Requests
0
CI / CD
CI / CD
Pipelines
Jobs
Schedules
Charts
Packages
Packages
Wiki
Wiki
Snippets
Snippets
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Charts
Create a new issue
Jobs
Commits
Issue Boards
Open sidebar
submodule
ffmpeg
Commits
bc057f75
Commit
bc057f75
authored
Dec 04, 2011
by
Hendrik Leppkes
Committed by
Justin Ruggles
Dec 07, 2011
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
pcm-mpeg: implement new audio decoding api
Signed-off-by:
Justin Ruggles
<
justin.ruggles@gmail.com
>
parent
8b03d7fe
Hide whitespace changes
Inline
Side-by-side
Showing
1 changed file
with
35 additions
and
17 deletions
+35
-17
pcm-mpeg.c
libavcodec/pcm-mpeg.c
+35
-17
No files found.
libavcodec/pcm-mpeg.c
View file @
bc057f75
...
...
@@ -119,17 +119,30 @@ static int pcm_bluray_parse_header(AVCodecContext *avctx,
return
0
;
}
static
int
pcm_bluray_decode_frame
(
AVCodecContext
*
avctx
,
void
*
data
,
int
*
data_size
,
AVPacket
*
avpkt
)
typedef
struct
PCMBRDecode
{
AVFrame
frame
;
}
PCMBRDecode
;
static
av_cold
int
pcm_bluray_decode_init
(
AVCodecContext
*
avctx
)
{
PCMBRDecode
*
s
=
avctx
->
priv_data
;
avcodec_get_frame_defaults
(
&
s
->
frame
);
avctx
->
coded_frame
=
&
s
->
frame
;
return
0
;
}
static
int
pcm_bluray_decode_frame
(
AVCodecContext
*
avctx
,
void
*
data
,
int
*
got_frame_ptr
,
AVPacket
*
avpkt
)
{
const
uint8_t
*
src
=
avpkt
->
data
;
int
buf_size
=
avpkt
->
size
;
PCMBRDecode
*
s
=
avctx
->
priv_data
;
int
num_source_channels
,
channel
,
retval
;
int
sample_size
,
samples
,
output_size
;
int16_t
*
dst16
=
data
;
int32_t
*
dst32
=
data
;
int
sample_size
,
samples
;
int16_t
*
dst16
;
int32_t
*
dst32
;
if
(
buf_size
<
4
)
{
av_log
(
avctx
,
AV_LOG_ERROR
,
"PCM packet too small
\n
"
);
...
...
@@ -146,15 +159,14 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx,
sample_size
=
(
num_source_channels
*
avctx
->
bits_per_coded_sample
)
>>
3
;
samples
=
buf_size
/
sample_size
;
output_size
=
samples
*
avctx
->
channels
*
(
avctx
->
sample_fmt
==
AV_SAMPLE_FMT_S32
?
4
:
2
);
if
(
output_size
>
*
data_size
)
{
av_log
(
avctx
,
AV_LOG_ERROR
,
"Insufficient output buffer space (%d bytes, needed %d bytes)
\n
"
,
*
data_size
,
output_size
);
return
-
1
;
/* get output buffer */
s
->
frame
.
nb_samples
=
samples
;
if
((
retval
=
avctx
->
get_buffer
(
avctx
,
&
s
->
frame
))
<
0
)
{
av_log
(
avctx
,
AV_LOG_ERROR
,
"get_buffer() failed
\n
"
);
return
retval
;
}
*
data_size
=
output_size
;
dst16
=
(
int16_t
*
)
s
->
frame
.
data
[
0
];
dst32
=
(
int32_t
*
)
s
->
frame
.
data
[
0
];
if
(
samples
)
{
switch
(
avctx
->
channel_layout
)
{
...
...
@@ -165,7 +177,7 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx,
samples
*=
num_source_channels
;
if
(
AV_SAMPLE_FMT_S16
==
avctx
->
sample_fmt
)
{
#if HAVE_BIGENDIAN
memcpy
(
dst16
,
src
,
output
_size
);
memcpy
(
dst16
,
src
,
buf
_size
);
#else
do
{
*
dst16
++
=
bytestream_get_be16
(
&
src
);
...
...
@@ -289,10 +301,13 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx,
}
}
*
got_frame_ptr
=
1
;
*
(
AVFrame
*
)
data
=
s
->
frame
;
retval
=
src
-
avpkt
->
data
;
if
(
avctx
->
debug
&
FF_DEBUG_BITSTREAM
)
av_dlog
(
avctx
,
"pcm_bluray_decode_frame: decoded %d -> %d bytes
\n
"
,
retval
,
*
data
_size
);
retval
,
buf
_size
);
return
retval
;
}
...
...
@@ -300,7 +315,10 @@ AVCodec ff_pcm_bluray_decoder = {
.
name
=
"pcm_bluray"
,
.
type
=
AVMEDIA_TYPE_AUDIO
,
.
id
=
CODEC_ID_PCM_BLURAY
,
.
priv_data_size
=
sizeof
(
PCMBRDecode
),
.
init
=
pcm_bluray_decode_init
,
.
decode
=
pcm_bluray_decode_frame
,
.
capabilities
=
CODEC_CAP_DR1
,
.
sample_fmts
=
(
const
enum
AVSampleFormat
[]){
AV_SAMPLE_FMT_S16
,
AV_SAMPLE_FMT_S32
,
AV_SAMPLE_FMT_NONE
},
.
long_name
=
NULL_IF_CONFIG_SMALL
(
"PCM signed 16|20|24-bit big-endian for Blu-ray media"
),
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment