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Code Issues Releases Activity

lavc/dpx: Support 10-bit packing method b (msbpad).

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This commit is contained in:
Carl Eugen Hoyos 2018-06-16 17:47:46 +02:00
parent af1e70dd66
commit 061e326b60
1 changed files with 8 additions and 7 deletions
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15
libavcodec/dpx.c
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@ -51,7 +51,7 @@ static unsigned int read32(const uint8_t **ptr, int is_big)
}
static uint16_t read10in32(const uint8_t **ptr, uint32_t * lbuf,
int * n_datum, int is_big)
int * n_datum, int is_big, int shift)
{
if (*n_datum)
(*n_datum)--;
@ -60,7 +60,7 @@ static uint16_t read10in32(const uint8_t **ptr, uint32_t * lbuf,
*n_datum = 2;
}
*lbuf = (*lbuf << 10) | (*lbuf >> 22);
*lbuf = *lbuf << 10 | *lbuf >> shift & 0x3FFFFF;
return *lbuf & 0x3FF;
}
@ -221,7 +221,7 @@ static int decode_frame(AVCodecContext *avctx,
stride = avctx->width * elements;
break;
case 10:
if (!packing || packing > 1) {
if (!packing) {
av_log(avctx, AV_LOG_ERROR, "Packing to 32bit required\n");
return -1;
}
@ -360,17 +360,18 @@ static int decode_frame(AVCodecContext *avctx,
(uint16_t*)ptr[1],
(uint16_t*)ptr[2],
(uint16_t*)ptr[3]};
int shift = packing == 1 ? 22 : 20;
for (y = 0; y < avctx->width; y++) {
*dst[2]++ = read10in32(&buf, &rgbBuffer,
&n_datum, endian);
&n_datum, endian, shift);
*dst[0]++ = read10in32(&buf, &rgbBuffer,
&n_datum, endian);
&n_datum, endian, shift);
*dst[1]++ = read10in32(&buf, &rgbBuffer,
&n_datum, endian);
&n_datum, endian, shift);
if (elements == 4)
*dst[3]++ =
read10in32(&buf, &rgbBuffer,
&n_datum, endian);
&n_datum, endian, shift);
}
n_datum = 0;
for (i = 0; i < elements; i++)