From 0db7b30700118d9d4b3ce0de8b1da94de747669e Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 18 Dec 2011 00:09:26 +0100 Subject: lagarith: rgb24 support Signed-off-by: Michael Niedermayer --- libavcodec/lagarith.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'libavcodec/lagarith.c') diff --git a/libavcodec/lagarith.c b/libavcodec/lagarith.c index bf845f1..43027cf 100644 --- a/libavcodec/lagarith.c +++ b/libavcodec/lagarith.c @@ -524,6 +524,50 @@ static int lag_decode_frame(AVCodecContext *avctx, srcs[i] += l->rgb_stride; } break; + case FRAME_ARITH_RGB24: + avctx->pix_fmt = PIX_FMT_RGB24; + + if (avctx->get_buffer(avctx, p) < 0) { + av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + return -1; + } + offs[0] = offset_bv; + offs[1] = offset_gu; + offs[2] = 9; + + if (!l->rgb_planes) { + l->rgb_stride = FFALIGN(avctx->width, 16); + l->rgb_planes = av_malloc(l->rgb_stride * avctx->height * 3); + if (!l->rgb_planes) { + av_log(avctx, AV_LOG_ERROR, "cannot allocate temporary buffer\n"); + return AVERROR(ENOMEM); + } + } + for (i = 0; i < 3; i++) + srcs[i] = l->rgb_planes + (i + 1) * l->rgb_stride * avctx->height - l->rgb_stride; + for (i = 0; i < 3; i++) + lag_decode_arith_plane(l, srcs[i], + avctx->width, avctx->height, + -l->rgb_stride, buf + offs[i], + buf_size); + dst = p->data[0]; + for (i = 0; i < 3; i++) + srcs[i] = l->rgb_planes + i * l->rgb_stride * avctx->height; + for (j = 0; j < avctx->height; j++) { + for (i = 0; i < avctx->width; i++) { + uint8_t r, g, b; + r = srcs[0][i]; + g = srcs[1][i]; + b = srcs[2][i]; + dst[3*i+0] = r+g; + dst[3*i+1] = g; + dst[3*i+2] = b+g; + } + dst += p->linesize[0]; + for (i = 0; i < 3; i++) + srcs[i] += l->rgb_stride; + } + break; case FRAME_ARITH_YV12: avctx->pix_fmt = PIX_FMT_YUV420P; -- cgit v1.1