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lavc/dpx: Support decoding 12 bit colourspace with transparency information.

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This commit is contained in:
Carl Eugen Hoyos 2016-06-15 17:45:51 +02:00
parent 346b3c5c41
commit aec96e233f
1 changed files with 9 additions and 7 deletions
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16
libavcodec/dpx.c
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@ -264,11 +264,13 @@ static int decode_frame(AVCodecContext *avctx,
avctx->pix_fmt = AV_PIX_FMT_GBRAP10;
break;
case 50120:
case 51120:
case 50121:
case 51121:
avctx->pix_fmt = AV_PIX_FMT_GBRP12;
break;
case 51120:
case 51121:
avctx->pix_fmt = AV_PIX_FMT_GBRAP12;
break;
case 6161:
avctx->pix_fmt = AV_PIX_FMT_GRAY16BE;
break;
@ -338,9 +340,10 @@ static int decode_frame(AVCodecContext *avctx,
break;
case 12:
for (x = 0; x < avctx->height; x++) {
uint16_t *dst[3] = {(uint16_t*)ptr[0],
uint16_t *dst[4] = {(uint16_t*)ptr[0],
(uint16_t*)ptr[1],
(uint16_t*)ptr[2]};
(uint16_t*)ptr[2],
(uint16_t*)ptr[3]};
for (y = 0; y < avctx->width; y++) {
*dst[2] = read16(&buf, endian) >> 4;
dst[2]++;
@ -348,11 +351,10 @@ static int decode_frame(AVCodecContext *avctx,
dst[0]++;
*dst[1] = read16(&buf, endian) >> 4;
dst[1]++;
// For 12 bit, ignore alpha
if (elements == 4)
buf += 2;
*dst[3]++ = read16(&buf, endian) >> 4;
}
for (i = 0; i < 3; i++)
for (i = 0; i < elements; i++)
ptr[i] += p->linesize[i];
// Jump to next aligned position
buf += need_align;