diff options
Diffstat (limited to 'libavcodec/lagarith.c')
-rw-r--r-- | libavcodec/lagarith.c | 52 |
1 files changed, 48 insertions, 4 deletions
diff --git a/libavcodec/lagarith.c b/libavcodec/lagarith.c index 1aa9ec305e..43027cff4e 100644 --- a/libavcodec/lagarith.c +++ b/libavcodec/lagarith.c @@ -2,20 +2,20 @@ * Lagarith lossless decoder * Copyright (c) 2009 Nathan Caldwell <saintdev (at) gmail.com> * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -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; |