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dpx encoder: support 10-bit packing method 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Peter Ross 2011-04-02 15:59:28 +11:00 committed by Michael Niedermayer
parent 1b5282a221
commit 4ec720059c
1 changed files with 40 additions and 0 deletions
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40
libavcodec/dpxenc.c
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@ -73,6 +73,31 @@ do { \
else AV_WL32(p, value); \
} while(0)
static void encode_rgb48_10bit(AVCodecContext *avctx, const AVPicture *pic, uint8_t *dst)
{
DPXContext *s = avctx->priv_data;
const uint8_t *src = pic->data[0];
int x, y;
for (y = 0; y < avctx->height; y++) {
for (x = 0; x < avctx->width; x++) {
int value;
if ((avctx->pix_fmt & 1)) {
value = ((AV_RB16(src + 6*x + 4) & 0xFFC0) >> 4)
| ((AV_RB16(src + 6*x + 2) & 0xFFC0) << 6)
| ((AV_RB16(src + 6*x + 0) & 0xFFC0) << 16);
} else {
value = ((AV_RL16(src + 6*x + 4) & 0xFFC0) >> 4)
| ((AV_RL16(src + 6*x + 2) & 0xFFC0) << 6)
| ((AV_RL16(src + 6*x + 0) & 0xFFC0) << 16);
}
write32(dst, value);
dst += 4;
}
src += pic->linesize[0];
}
}
static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data)
{
DPXContext *s = avctx->priv_data;
@ -102,16 +127,31 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
buf[801] = 2; /* linear transfer */
buf[802] = 2; /* linear colorimetric */
buf[803] = s->bits_per_component;
write16(buf + 804, s->bits_per_component == 10 ? 1 : 0); /* packing method */
/* Image source information header */
write32(buf + 1628, avctx->sample_aspect_ratio.num);
write32(buf + 1632, avctx->sample_aspect_ratio.den);
switch(s->bits_per_component) {
case 8:
case 16:
size = avpicture_layout((AVPicture*)data, avctx->pix_fmt,
avctx->width, avctx->height,
buf + HEADER_SIZE, buf_size - HEADER_SIZE);
if (size < 0)
return size;
break;
case 10:
size = avctx->height * avctx->width * 4;
if (buf_size < HEADER_SIZE + size)
return -1;
encode_rgb48_10bit(avctx, (AVPicture*)data, buf + HEADER_SIZE);
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n", bits_per_component);
return -1;
}
size += HEADER_SIZE;