From 39616fc30746ca07608f7855e85bd89cb08cfd27 Mon Sep 17 00:00:00 2001 From: Nathan Caldwell Date: Wed, 16 Nov 2011 00:45:00 -0700 Subject: lagarith: Add correct line prediction for RGB MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Martin Storsjö --- libavcodec/lagarith.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'libavcodec/lagarith.c') diff --git a/libavcodec/lagarith.c b/libavcodec/lagarith.c index 10cc71e0d8..9200773a65 100644 --- a/libavcodec/lagarith.c +++ b/libavcodec/lagarith.c @@ -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); -- cgit v1.2.1