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avcodec/mjpegdec: support adob transform 2
Fixes Ticket3426 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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parent
e893440a28
commit
e161c1bbfc
@ -2092,6 +2092,28 @@ the_end:
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}
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}
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}
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if (s->adobe_transform == 2 && s->avctx->pix_fmt == AV_PIX_FMT_YUVA444P) {
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int w = s->picture_ptr->width;
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int h = s->picture_ptr->height;
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for (i=0; i<h; i++) {
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int j;
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uint8_t *dst[4];
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for (index=0; index<4; index++) {
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dst[index] = s->picture_ptr->data[index]
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+ s->picture_ptr->linesize[index]*i;
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}
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for (j=0; j<w; j++) {
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int k = dst[3][j];
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int r = (255 - dst[0][j]) * k;
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int g = (128 - dst[1][j]) * k;
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int b = (128 - dst[2][j]) * k;
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dst[0][j] = r*257 >> 16;
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dst[1][j] = (g*257 >> 16) + 128;
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dst[2][j] = (b*257 >> 16) + 128;
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dst[3][j] = 255;
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}
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}
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}
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if (s->stereo3d) {
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AVStereo3D *stereo = av_stereo3d_create_side_data(data);
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