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Make two functions out of #define hackery.

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Patch by Sebastian Vater, cdgs D basty A googlemail

Originally committed as revision 22970 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Sebastian Vater 2010-04-26 22:00:57 +00:00 committed by Carl Eugen Hoyos
parent 90bc36b063
commit 687dc3555d
1 changed files with 31 additions and 14 deletions
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45
libavcodec/iff.c
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@ -87,27 +87,44 @@ static av_cold int decode_init(AVCodecContext *avctx)
}
/**
* Decode interleaved plane buffer
* Decode interleaved plane buffer up to 8bpp
* @param dst Destination buffer
* @param buf Source buffer
* @param buf_size
* @param bps bits_per_coded_sample (must be <= 8)
* @param plane plane number to decode as
*/
static void decodeplane8(uint8_t *dst, const uint8_t *const buf, int buf_size, int bps, int plane)
{
GetBitContext gb;
int i, b;
init_get_bits(&gb, buf, buf_size * 8);
for(i = 0; i < (buf_size * 8 + bps - 1) / bps; i++) {
for (b = 0; b < bps; b++) {
dst[ i*bps + b ] |= get_bits1(&gb) << plane;
}
}
}
/**
* Decode interleaved plane buffer up to 24bpp
* @param dst Destination buffer
* @param buf Source buffer
* @param buf_size
* @param bps bits_per_coded_sample
* @param plane plane number to decode as
*/
#define DECLARE_DECODEPLANE(suffix, type) \
static void decodeplane##suffix(void *dst, const uint8_t *const buf, int buf_size, int bps, int plane) \
{ \
GetBitContext gb; \
int i, b; \
init_get_bits(&gb, buf, buf_size * 8); \
for(i = 0; i < (buf_size * 8 + bps - 1) / bps; i++) { \
for (b = 0; b < bps; b++) { \
((type *)dst)[ i*bps + b ] |= get_bits1(&gb) << plane; \
} \
} \
static void decodeplane32(uint32_t *dst, const uint8_t *const buf, int buf_size, int bps, int plane)
{
GetBitContext gb;
int i, b;
init_get_bits(&gb, buf, buf_size * 8);
for(i = 0; i < (buf_size * 8 + bps - 1) / bps; i++) {
for (b = 0; b < bps; b++) {
dst[ i*bps + b ] |= get_bits1(&gb) << plane;
}
}
}
DECLARE_DECODEPLANE(8, uint8_t)
DECLARE_DECODEPLANE(32, uint32_t)
static int decode_frame_ilbm(AVCodecContext *avctx,
void *data, int *data_size,