3 * Copyright (c) 2011 Carl Eugen Hoyos
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 static av_cold int v308_decode_init(AVCodecContext *avctx)
27 avctx->pix_fmt = AV_PIX_FMT_YUV444P;
30 av_log(avctx, AV_LOG_WARNING, "v308 requires width to be even.\n");
32 avctx->coded_frame = avcodec_alloc_frame();
34 if (!avctx->coded_frame) {
35 av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
36 return AVERROR(ENOMEM);
42 static int v308_decode_frame(AVCodecContext *avctx, void *data,
43 int *got_frame, AVPacket *avpkt)
45 AVFrame *pic = avctx->coded_frame;
46 const uint8_t *src = avpkt->data;
51 avctx->release_buffer(avctx, pic);
53 if (avpkt->size < 3 * avctx->height * avctx->width) {
54 av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
55 return AVERROR(EINVAL);
60 if (ff_get_buffer(avctx, pic) < 0) {
61 av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
62 return AVERROR(ENOMEM);
66 pic->pict_type = AV_PICTURE_TYPE_I;
72 for (i = 0; i < avctx->height; i++) {
73 for (j = 0; j < avctx->width; j++) {
79 y += pic->linesize[0];
80 u += pic->linesize[1];
81 v += pic->linesize[2];
85 *(AVFrame *)data = *pic;
90 static av_cold int v308_decode_close(AVCodecContext *avctx)
92 if (avctx->coded_frame->data[0])
93 avctx->release_buffer(avctx, avctx->coded_frame);
95 av_freep(&avctx->coded_frame);
100 AVCodec ff_v308_decoder = {
102 .type = AVMEDIA_TYPE_VIDEO,
103 .id = AV_CODEC_ID_V308,
104 .init = v308_decode_init,
105 .decode = v308_decode_frame,
106 .close = v308_decode_close,
107 .capabilities = CODEC_CAP_DR1,
108 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"),