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aasc: 8bit support

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Closes #1319.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2012-08-08 23:59:33 +00:00
parent 8a57ca5c6a
commit bd971ddaf4
1 changed files with 18 additions and 0 deletions
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18
libavcodec/aasc.c
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@ -36,14 +36,29 @@ typedef struct AascContext {
AVCodecContext *avctx; AVCodecContext *avctx;
GetByteContext gb; GetByteContext gb;
AVFrame frame; AVFrame frame;
uint32_t palette[AVPALETTE_COUNT];
int palette_size;
} AascContext; } AascContext;
static av_cold int aasc_decode_init(AVCodecContext *avctx) static av_cold int aasc_decode_init(AVCodecContext *avctx)
{ {
AascContext *s = avctx->priv_data; AascContext *s = avctx->priv_data;
uint8_t *ptr;
int i;
s->avctx = avctx; s->avctx = avctx;
switch (avctx->bits_per_coded_sample) { switch (avctx->bits_per_coded_sample) {
case 8:
avctx->pix_fmt = PIX_FMT_PAL8;
ptr = avctx->extradata;
s->palette_size = FFMIN(avctx->extradata_size, AVPALETTE_SIZE);
for (i = 0; i < s->palette_size / 4; i++) {
s->palette[i] = 0xFFU << 24 | AV_RL32(ptr);
ptr += 4;
}
break;
case 16: case 16:
avctx->pix_fmt = PIX_FMT_RGB555; avctx->pix_fmt = PIX_FMT_RGB555;
break; break;
@ -112,6 +127,9 @@ static int aasc_decode_frame(AVCodecContext *avctx,
return -1; return -1;
} }
if (avctx->pix_fmt == PIX_FMT_PAL8)
memcpy(s->frame.data[1], s->palette, s->palette_size);
*data_size = sizeof(AVFrame); *data_size = sizeof(AVFrame);
*(AVFrame*)data = s->frame; *(AVFrame*)data = s->frame;