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Linshizhi
ffmpeg.wasm-core
Commits
37fce84e
Commit
37fce84e
authored
Mar 19, 2013
by
Stefano Sabatini
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lavc/libtheoraenc: clarify comment about global_quality to quality conversion
parent
b448c0a6
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libtheoraenc.c
libavcodec/libtheoraenc.c
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libavcodec/libtheoraenc.c
View file @
37fce84e
...
@@ -207,11 +207,11 @@ static av_cold int encode_init(AVCodecContext* avc_context)
...
@@ -207,11 +207,11 @@ static av_cold int encode_init(AVCodecContext* avc_context)
avcodec_get_chroma_sub_sample
(
avc_context
->
pix_fmt
,
&
h
->
uv_hshift
,
&
h
->
uv_vshift
);
avcodec_get_chroma_sub_sample
(
avc_context
->
pix_fmt
,
&
h
->
uv_hshift
,
&
h
->
uv_vshift
);
if
(
avc_context
->
flags
&
CODEC_FLAG_QSCALE
)
{
if
(
avc_context
->
flags
&
CODEC_FLAG_QSCALE
)
{
/*
to be constant with the libvorbis implementation, clip global_quality to 0 - 10
/*
Clip global_quality in QP units to the [0 - 10] range
Theora accepts a quality parameter p, which is:
to be consistent with the libvorbis implementation.
* 0 <= p <=63
Theora accepts a quality parameter which is an int value in
* an int value
the [0 - 63] range.
*/
*/
t_info
.
quality
=
av_clipf
(
avc_context
->
global_quality
/
(
float
)
FF_QP2LAMBDA
,
0
,
10
)
*
6
.
3
;
t_info
.
quality
=
av_clipf
(
avc_context
->
global_quality
/
(
float
)
FF_QP2LAMBDA
,
0
,
10
)
*
6
.
3
;
t_info
.
target_bitrate
=
0
;
t_info
.
target_bitrate
=
0
;
}
else
{
}
else
{
...
...
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