4 * Copyright (c) 2011 Derek Buitenhuis
6 * This file is part of Libav.
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "libavutil/intreadwrite.h"
26 static av_cold int v410_decode_init(AVCodecContext *avctx)
28 avctx->pix_fmt = PIX_FMT_YUV444P10;
29 avctx->bits_per_raw_sample = 10;
31 if (avctx->width & 1) {
32 av_log(avctx, AV_LOG_ERROR, "v410 requires even width.\n");
33 return AVERROR_INVALIDDATA;
36 avctx->coded_frame = avcodec_alloc_frame();
38 if (!avctx->coded_frame) {
39 av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
40 return AVERROR(ENOMEM);
46 static int v410_decode_frame(AVCodecContext *avctx, void *data,
47 int *data_size, AVPacket *avpkt)
49 AVFrame *pic = avctx->coded_frame;
50 uint8_t *src = avpkt->data;
56 avctx->release_buffer(avctx, pic);
58 if (avpkt->size < 4 * avctx->height * avctx->width) {
59 av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
60 return AVERROR(EINVAL);
65 if (avctx->get_buffer(avctx, pic) < 0) {
66 av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
67 return AVERROR(ENOMEM);
71 pic->pict_type = AV_PICTURE_TYPE_I;
73 y = (uint16_t *)pic->data[0];
74 u = (uint16_t *)pic->data[1];
75 v = (uint16_t *)pic->data[2];
77 for (i = 0; i < avctx->height; i++) {
78 for (j = 0; j < avctx->width; j++) {
81 u[j] = (val >> 2) & 0x3FF;
82 y[j] = (val >> 12) & 0x3FF;
88 y += pic->linesize[0] >> 1;
89 u += pic->linesize[1] >> 1;
90 v += pic->linesize[2] >> 1;
93 *data_size = sizeof(AVFrame);
94 *(AVFrame *)data = *pic;
99 static av_cold int v410_decode_close(AVCodecContext *avctx)
101 if (avctx->coded_frame->data[0])
102 avctx->release_buffer(avctx, avctx->coded_frame);
104 av_freep(&avctx->coded_frame);
109 AVCodec ff_v410_decoder = {
111 .type = AVMEDIA_TYPE_VIDEO,
113 .init = v410_decode_init,
114 .decode = v410_decode_frame,
115 .close = v410_decode_close,
116 .capabilities = CODEC_CAP_DR1,
117 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),