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lagarith: Add correct line prediction for RGB

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Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Nathan Caldwell 2011-11-16 00:45:00 -07:00 committed by Martin Storsjö
parent 52767d891c
commit 39616fc307
1 changed files with 5 additions and 5 deletions
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10
libavcodec/lagarith.c
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@ -245,21 +245,21 @@ static void lag_pred_line(LagarithContext *l, uint8_t *buf,
{
int L, TL;
/* Left pixel is actually prev_row[width] */
L = buf[width - stride - 1];
if (!line) {
/* Left prediction only for first line */
L = l->dsp.add_hfyu_left_prediction(buf + 1, buf + 1,
width - 1, buf[0]);
return;
} else if (line == 1) {
/* Second line, left predict first pixel, the rest of the line is median predicted */
/* FIXME: In the case of RGB this pixel is top predicted */
TL = buf[-stride];
/* Second line, left predict first pixel, the rest of the line is median predicted
* NOTE: In the case of RGB this pixel is top predicted */
TL = l->avctx->pix_fmt == PIX_FMT_YUV420P ? buf[-stride] : L;
} else {
/* Top left is 2 rows back, last pixel */
TL = buf[width - (2 * stride) - 1];
}
/* Left pixel is actually prev_row[width] */
L = buf[width - stride - 1];
add_lag_median_prediction(buf, buf - stride, buf,
width, &L, &TL);