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avcodec/dpx: fix reading 12bit dpx images, which have non zero padding bits
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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parent
e1f8184a1a
commit
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@ -25,6 +25,18 @@
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#include "avcodec.h"
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#include "internal.h"
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static unsigned int read16(const uint8_t **ptr, int is_big)
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{
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unsigned int temp;
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if (is_big) {
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temp = AV_RB16(*ptr);
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} else {
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temp = AV_RL16(*ptr);
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}
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*ptr += 2;
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return temp;
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}
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static unsigned int read32(const uint8_t **ptr, int is_big)
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{
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unsigned int temp;
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@ -159,11 +171,7 @@ static int decode_frame(AVCodecContext *avctx,
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av_log(avctx, AV_LOG_ERROR, "Packing to 16bit required\n");
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return -1;
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}
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if (endian) {
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avctx->pix_fmt = AV_PIX_FMT_GBRP12BE;
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} else {
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avctx->pix_fmt = AV_PIX_FMT_GBRP12LE;
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}
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avctx->pix_fmt = AV_PIX_FMT_GBRP12;
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total_size = 2 * avctx->width * avctx->height * elements;
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break;
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case 16:
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@ -221,18 +229,12 @@ static int decode_frame(AVCodecContext *avctx,
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(uint16_t*)ptr[1],
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(uint16_t*)ptr[2]};
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for (y = 0; y < avctx->width; y++) {
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*dst[2] = *((uint16_t*)buf);
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*dst[2] = (*dst[2] >> 4) | (*dst[2] << 12);
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*dst[2] = read16(&buf, endian) >> 4;
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dst[2]++;
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buf += 2;
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*dst[0] = *((uint16_t*)buf);
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*dst[0] = (*dst[0] >> 4) | (*dst[0] << 12);
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*dst[0] = read16(&buf, endian) >> 4;
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dst[0]++;
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buf += 2;
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*dst[1] = *((uint16_t*)buf);
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*dst[1] = (*dst[1] >> 4) | (*dst[1] << 12);
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*dst[1] = read16(&buf, endian) >> 4;
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dst[1]++;
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buf += 2;
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// For 12 bit, ignore alpha
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if (elements == 4)
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buf += 2;
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