diff options
| author | François Revol <revol@free.fr> | 2002-07-21 07:54:53 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2002-07-21 07:54:53 +0000 |
| commit | 6742d95d59175d714de12858233ae38197645e8d (patch) | |
| tree | 736a8a9e09228649cf7dec7cb584f49d35a3b8e1 /libavcodec/imgconvert.c | |
| parent | 3e6a20a0cd4f33fdd1cc3844277f3658ee1e14b8 (diff) | |
YUV410P to YUV420P patch by François Revol <revol at free dot fr>
Originally committed as revision 783 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/imgconvert.c')
| -rw-r--r-- | libavcodec/imgconvert.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/libavcodec/imgconvert.c b/libavcodec/imgconvert.c index 04300744f1..ad6495da30 100644 --- a/libavcodec/imgconvert.c +++ b/libavcodec/imgconvert.c @@ -245,6 +245,34 @@ static void shrink22(UINT8 *dst, int dst_wrap, } } +/* 1x1 -> 2x2 */ +static void grow22(UINT8 *dst, int dst_wrap, + UINT8 *src, int src_wrap, + int width, int height) +{ + int w; + UINT8 *s1, *d; + + for(;height > 0; height--) { + s1 = src; + d = dst; + for(w = width;w >= 4; w-=4) { + d[1] = d[0] = s1[0]; + d[3] = d[2] = s1[1]; + s1 += 2; + d += 4; + } + for(;w > 0; w--) { + d[0] = s1[0]; + s1 ++; + d++; + } + if (height%2) + src += src_wrap; + dst += dst_wrap; + } +} + static void img_copy(UINT8 *dst, int dst_wrap, UINT8 *src, int src_wrap, int width, int height) @@ -382,6 +410,17 @@ int img_convert(AVPicture *dst, int dst_pix_fmt, } else if (dst_pix_fmt == PIX_FMT_YUV420P) { switch(pix_fmt) { + case PIX_FMT_YUV410P: + img_copy(dst->data[0], dst->linesize[0], + src->data[0], src->linesize[0], + width, height); + grow22(dst->data[1], dst->linesize[1], + src->data[1], src->linesize[1], + width/2, height/2); + grow22(dst->data[2], dst->linesize[2], + src->data[2], src->linesize[2], + width/2, height/2); + break; case PIX_FMT_YUV420P: for(i=0;i<3;i++) { img_copy(dst->data[i], dst->linesize[i], |