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Linshizhi
ffmpeg.wasm-core
Commits
1a3d4b88
Commit
1a3d4b88
authored
Mar 08, 2012
by
Stefano Sabatini
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imgconvert: add macro pixdesc_has_alpha for checking if a pixel format has an alpha component
Reduce redundancy and simplify.
parent
174678ff
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1 changed file
with
5 additions
and
15 deletions
+5
-15
imgconvert.c
libavcodec/imgconvert.c
+5
-15
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libavcodec/imgconvert.c
View file @
1a3d4b88
...
...
@@ -55,9 +55,11 @@
#define deinterlace_line deinterlace_line_c
#endif
#define pixdesc_has_alpha(pixdesc) \
((pixdesc)->nb_components == 2 || (pixdesc)->nb_components == 4 || (pixdesc)->flags & PIX_FMT_PAL)
typedef
struct
PixFmtInfo
{
uint8_t
color_type
;
/**< color type (see FF_COLOR_xxx constants) */
uint8_t
is_alpha
:
1
;
/**< true if alpha can be specified */
uint8_t
padded_size
;
/**< padded size in bits if different from the non-padded size */
}
PixFmtInfo
;
...
...
@@ -109,12 +111,10 @@ static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
/* YUV formats with alpha plane */
[
PIX_FMT_YUVA420P
]
=
{
.
is_alpha
=
1
,
.
color_type
=
FF_COLOR_YUV
,
},
[
PIX_FMT_YUVA444P
]
=
{
.
is_alpha
=
1
,
.
color_type
=
FF_COLOR_YUV
,
},
...
...
@@ -140,7 +140,6 @@ static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
.
color_type
=
FF_COLOR_RGB
,
},
[
PIX_FMT_ARGB
]
=
{
.
is_alpha
=
1
,
.
color_type
=
FF_COLOR_RGB
,
},
[
PIX_FMT_RGB48BE
]
=
{
...
...
@@ -150,11 +149,9 @@ static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
.
color_type
=
FF_COLOR_RGB
,
},
[
PIX_FMT_RGBA64BE
]
=
{
.
is_alpha
=
1
,
.
color_type
=
FF_COLOR_RGB
,
},
[
PIX_FMT_RGBA64LE
]
=
{
.
is_alpha
=
1
,
.
color_type
=
FF_COLOR_RGB
,
},
[
PIX_FMT_RGB565BE
]
=
{
...
...
@@ -191,7 +188,6 @@ static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
.
color_type
=
FF_COLOR_GRAY
,
},
[
PIX_FMT_GRAY8A
]
=
{
.
is_alpha
=
1
,
.
color_type
=
FF_COLOR_GRAY
,
},
[
PIX_FMT_MONOWHITE
]
=
{
...
...
@@ -203,14 +199,12 @@ static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
/* paletted formats */
[
PIX_FMT_PAL8
]
=
{
.
is_alpha
=
1
,
.
color_type
=
FF_COLOR_RGB
,
},
[
PIX_FMT_UYYVYY411
]
=
{
.
color_type
=
FF_COLOR_YUV
,
},
[
PIX_FMT_ABGR
]
=
{
.
is_alpha
=
1
,
.
color_type
=
FF_COLOR_RGB
,
},
[
PIX_FMT_BGR48BE
]
=
{
...
...
@@ -220,11 +214,9 @@ static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
.
color_type
=
FF_COLOR_RGB
,
},
[
PIX_FMT_BGRA64BE
]
=
{
.
is_alpha
=
1
,
.
color_type
=
FF_COLOR_RGB
,
},
[
PIX_FMT_BGRA64LE
]
=
{
.
is_alpha
=
1
,
.
color_type
=
FF_COLOR_RGB
,
},
[
PIX_FMT_BGR565BE
]
=
{
...
...
@@ -279,11 +271,9 @@ static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
},
[
PIX_FMT_BGRA
]
=
{
.
is_alpha
=
1
,
.
color_type
=
FF_COLOR_RGB
,
},
[
PIX_FMT_RGBA
]
=
{
.
is_alpha
=
1
,
.
color_type
=
FF_COLOR_RGB
,
},
};
...
...
@@ -445,10 +435,10 @@ int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_
if
(
pf
->
color_type
==
FF_COLOR_GRAY
&&
ps
->
color_type
!=
FF_COLOR_GRAY
)
loss
|=
FF_LOSS_CHROMA
;
if
(
!
p
f
->
is_alpha
&&
(
ps
->
is_alpha
&&
has_alpha
))
if
(
!
p
ixdesc_has_alpha
(
dst_desc
)
&&
(
pixdesc_has_alpha
(
src_desc
)
&&
has_alpha
))
loss
|=
FF_LOSS_ALPHA
;
if
(
dst_pix_fmt
==
PIX_FMT_PAL8
&&
(
src_pix_fmt
!=
PIX_FMT_PAL8
&&
(
ps
->
color_type
!=
FF_COLOR_GRAY
||
(
p
s
->
is_alpha
&&
has_alpha
))))
(
src_pix_fmt
!=
PIX_FMT_PAL8
&&
(
ps
->
color_type
!=
FF_COLOR_GRAY
||
(
p
ixdesc_has_alpha
(
src_desc
)
&&
has_alpha
))))
loss
|=
FF_LOSS_COLORQUANT
;
return
loss
;
...
...
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