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Linshizhi
ffmpeg.wasm-core
Commits
61eaf45c
Commit
61eaf45c
authored
Feb 12, 2012
by
Anton Khirnov
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targaenc: switch to encode2().
parent
1e742ea3
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Showing
1 changed file
with
30 additions
and
26 deletions
+30
-26
targaenc.c
libavcodec/targaenc.c
+30
-26
No files found.
libavcodec/targaenc.c
View file @
61eaf45c
...
...
@@ -22,6 +22,7 @@
#include "libavutil/intreadwrite.h"
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "internal.h"
#include "rle.h"
#include "targa.h"
...
...
@@ -39,7 +40,7 @@ typedef struct TargaContext {
* @param h Image height
* @return Size of output in bytes, or -1 if larger than out_size
*/
static
int
targa_encode_rle
(
uint8_t
*
outbuf
,
int
out_size
,
AVFrame
*
pic
,
static
int
targa_encode_rle
(
uint8_t
*
outbuf
,
int
out_size
,
const
AVFrame
*
pic
,
int
bpp
,
int
w
,
int
h
)
{
int
y
,
ret
;
...
...
@@ -59,7 +60,7 @@ static int targa_encode_rle(uint8_t *outbuf, int out_size, AVFrame *pic,
return
out
-
outbuf
;
}
static
int
targa_encode_normal
(
uint8_t
*
outbuf
,
AVFrame
*
pic
,
int
bpp
,
int
w
,
int
h
)
static
int
targa_encode_normal
(
uint8_t
*
outbuf
,
const
AVFrame
*
pic
,
int
bpp
,
int
w
,
int
h
)
{
int
i
,
n
=
bpp
*
w
;
uint8_t
*
out
=
outbuf
;
...
...
@@ -74,11 +75,10 @@ static int targa_encode_normal(uint8_t *outbuf, AVFrame *pic, int bpp, int w, in
return
out
-
outbuf
;
}
static
int
targa_encode_frame
(
AVCodecContext
*
avctx
,
unsigned
char
*
outbuf
,
int
buf_size
,
void
*
data
){
AVFrame
*
p
=
data
;
int
bpp
,
picsize
,
datasize
=
-
1
;
static
int
targa_encode_frame
(
AVCodecContext
*
avctx
,
AVPacket
*
pkt
,
const
AVFrame
*
p
,
int
*
got_packet
)
{
int
bpp
,
picsize
,
datasize
=
-
1
,
ret
;
uint8_t
*
out
;
if
(
avctx
->
width
>
0xffff
||
avctx
->
height
>
0xffff
)
{
...
...
@@ -86,43 +86,43 @@ static int targa_encode_frame(AVCodecContext *avctx,
return
AVERROR
(
EINVAL
);
}
picsize
=
avpicture_get_size
(
avctx
->
pix_fmt
,
avctx
->
width
,
avctx
->
height
);
if
(
buf_size
<
picsize
+
45
)
{
if
((
ret
=
ff_alloc_packet
(
pkt
,
picsize
+
45
))
<
0
)
{
av_log
(
avctx
,
AV_LOG_ERROR
,
"encoded frame too large
\n
"
);
return
AVERROR
(
EINVAL
)
;
return
ret
;
}
/* zero out the header and only set applicable fields */
memset
(
outbuf
,
0
,
12
);
AV_WL16
(
outbuf
+
12
,
avctx
->
width
);
AV_WL16
(
outbuf
+
14
,
avctx
->
height
);
memset
(
pkt
->
data
,
0
,
12
);
AV_WL16
(
pkt
->
data
+
12
,
avctx
->
width
);
AV_WL16
(
pkt
->
data
+
14
,
avctx
->
height
);
/* image descriptor byte: origin is always top-left, bits 0-3 specify alpha */
outbuf
[
17
]
=
0x20
|
(
avctx
->
pix_fmt
==
PIX_FMT_BGRA
?
8
:
0
);
pkt
->
data
[
17
]
=
0x20
|
(
avctx
->
pix_fmt
==
PIX_FMT_BGRA
?
8
:
0
);
switch
(
avctx
->
pix_fmt
)
{
case
PIX_FMT_GRAY8
:
outbuf
[
2
]
=
TGA_BW
;
/* uncompressed grayscale image */
outbuf
[
16
]
=
8
;
/* bpp */
pkt
->
data
[
2
]
=
TGA_BW
;
/* uncompressed grayscale image */
pkt
->
data
[
16
]
=
8
;
/* bpp */
break
;
case
PIX_FMT_RGB555LE
:
outbuf
[
2
]
=
TGA_RGB
;
/* uncompresses true-color image */
outbuf
[
16
]
=
16
;
/* bpp */
pkt
->
data
[
2
]
=
TGA_RGB
;
/* uncompresses true-color image */
pkt
->
data
[
16
]
=
16
;
/* bpp */
break
;
case
PIX_FMT_BGR24
:
outbuf
[
2
]
=
TGA_RGB
;
/* uncompressed true-color image */
outbuf
[
16
]
=
24
;
/* bpp */
pkt
->
data
[
2
]
=
TGA_RGB
;
/* uncompressed true-color image */
pkt
->
data
[
16
]
=
24
;
/* bpp */
break
;
case
PIX_FMT_BGRA
:
outbuf
[
2
]
=
TGA_RGB
;
/* uncompressed true-color image */
outbuf
[
16
]
=
32
;
/* bpp */
pkt
->
data
[
2
]
=
TGA_RGB
;
/* uncompressed true-color image */
pkt
->
data
[
16
]
=
32
;
/* bpp */
break
;
default:
av_log
(
avctx
,
AV_LOG_ERROR
,
"Pixel format '%s' not supported.
\n
"
,
av_get_pix_fmt_name
(
avctx
->
pix_fmt
));
return
AVERROR
(
EINVAL
);
}
bpp
=
outbuf
[
16
]
>>
3
;
bpp
=
pkt
->
data
[
16
]
>>
3
;
out
=
outbuf
+
18
;
/* skip past the header we just output */
out
=
pkt
->
data
+
18
;
/* skip past the header we just output */
/* try RLE compression */
if
(
avctx
->
coder_type
!=
FF_CODER_TYPE_RAW
)
...
...
@@ -130,7 +130,7 @@ static int targa_encode_frame(AVCodecContext *avctx,
/* if that worked well, mark the picture as RLE compressed */
if
(
datasize
>=
0
)
outbuf
[
2
]
|=
8
;
pkt
->
data
[
2
]
|=
8
;
/* if RLE didn't make it smaller, go back to no compression */
else
datasize
=
targa_encode_normal
(
out
,
p
,
bpp
,
avctx
->
width
,
avctx
->
height
);
...
...
@@ -142,7 +142,11 @@ static int targa_encode_frame(AVCodecContext *avctx,
* aspect ratio and encoder ID fields available? */
memcpy
(
out
,
"
\0\0\0\0\0\0\0\0
TRUEVISION-XFILE."
,
26
);
return
out
+
26
-
outbuf
;
pkt
->
size
=
out
+
26
-
pkt
->
data
;
pkt
->
flags
|=
AV_PKT_FLAG_KEY
;
*
got_packet
=
1
;
return
0
;
}
static
av_cold
int
targa_encode_init
(
AVCodecContext
*
avctx
)
...
...
@@ -163,7 +167,7 @@ AVCodec ff_targa_encoder = {
.
id
=
CODEC_ID_TARGA
,
.
priv_data_size
=
sizeof
(
TargaContext
),
.
init
=
targa_encode_init
,
.
encode
=
targa_encode_frame
,
.
encode
2
=
targa_encode_frame
,
.
pix_fmts
=
(
const
enum
PixelFormat
[]){
PIX_FMT_BGR24
,
PIX_FMT_BGRA
,
PIX_FMT_RGB555LE
,
PIX_FMT_GRAY8
,
PIX_FMT_NONE
},
.
long_name
=
NULL_IF_CONFIG_SMALL
(
"Truevision Targa image"
),
};
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