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Fix writing 12 bit DPX

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The DPX encoder now writes 12 DPX that open correctly (tested with
ImageMagick), and also correspond to the 12 bit sample files at
http://samples.ffmpeg.org/image-samples/dpx_samples.zip

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Georg Lippitsch 2012-10-12 21:18:50 +02:00 committed by Michael Niedermayer
parent 05b7315412
commit 24778c32d8
1 changed files with 14 additions and 3 deletions
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17
libavcodec/dpxenc.c
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@ -104,7 +104,7 @@ static void encode_rgb48_10bit(AVCodecContext *avctx, const AVPicture *pic, uint
for (y = 0; y < avctx->height; y++) {
for (x = 0; x < avctx->width; x++) {
int value;
if ((avctx->pix_fmt & 1)) {
if (s->big_endian) {
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);
@ -129,7 +129,7 @@ static void encode_gbrp10(AVCodecContext *avctx, const AVPicture *pic, uint8_t *
for (y = 0; y < avctx->height; y++) {
for (x = 0; x < avctx->width; x++) {
int value;
if ((avctx->pix_fmt & 1)) {
if (s->big_endian) {
value = (AV_RB16(src[0] + 2*x) << 12)
| (AV_RB16(src[1] + 2*x) << 2)
| (AV_RB16(src[2] + 2*x) << 22);
@ -148,14 +148,25 @@ static void encode_gbrp10(AVCodecContext *avctx, const AVPicture *pic, uint8_t *
static void encode_gbrp12(AVCodecContext *avctx, const AVPicture *pic, uint16_t *dst)
{
DPXContext *s = avctx->priv_data;
const uint16_t *src[3] = {(uint16_t*)pic->data[0],
(uint16_t*)pic->data[1],
(uint16_t*)pic->data[2]};
int x, y, i;
for (y = 0; y < avctx->height; y++) {
for (x = 0; x < avctx->width; x++) {
uint16_t value[3];
if (s->big_endian) {
value[1] = AV_RB16(src[0] + x) << 4;
value[2] = AV_RB16(src[1] + x) << 4;
value[0] = AV_RB16(src[2] + x) << 4;
} else {
value[1] = AV_RL16(src[0] + x) << 4;
value[2] = AV_RL16(src[1] + x) << 4;
value[0] = AV_RL16(src[2] + x) << 4;
}
for (i = 0; i < 3; i++)
*dst++ = *(src[i] + x);
write16(dst++, value[i]);
}
for (i = 0; i < 3; i++)
src[i] += pic->linesize[i]/2;