4 * Copyright (c) 2011 Derek Buitenhuis
6 * This file is part of FFmpeg.
8 * FFmpeg 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 * FFmpeg 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 FFmpeg; 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 if (avctx->err_recognition & AV_EF_EXPLODE) {
33 av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n");
34 return AVERROR_INVALIDDATA;
36 av_log(avctx, AV_LOG_WARNING, "v410 requires width to be even, continuing anyway.\n");
40 avctx->coded_frame = avcodec_alloc_frame();
42 if (!avctx->coded_frame) {
43 av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
44 return AVERROR(ENOMEM);
50 static int v410_decode_frame(AVCodecContext *avctx, void *data,
51 int *data_size, AVPacket *avpkt)
53 AVFrame *pic = avctx->coded_frame;
54 uint8_t *src = avpkt->data;
60 avctx->release_buffer(avctx, pic);
62 if (avpkt->size < 4 * avctx->height * avctx->width) {
63 av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
64 return AVERROR(EINVAL);
69 if (avctx->get_buffer(avctx, pic) < 0) {
70 av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
71 return AVERROR(ENOMEM);
75 pic->pict_type = AV_PICTURE_TYPE_I;
77 y = (uint16_t *)pic->data[0];
78 u = (uint16_t *)pic->data[1];
79 v = (uint16_t *)pic->data[2];
81 for (i = 0; i < avctx->height; i++) {
82 for (j = 0; j < avctx->width; j++) {
85 u[j] = (val >> 2) & 0x3FF;
86 y[j] = (val >> 12) & 0x3FF;
92 y += pic->linesize[0] >> 1;
93 u += pic->linesize[1] >> 1;
94 v += pic->linesize[2] >> 1;
97 *data_size = sizeof(AVFrame);
98 *(AVFrame *)data = *pic;
103 static av_cold int v410_decode_close(AVCodecContext *avctx)
105 if (avctx->coded_frame->data[0])
106 avctx->release_buffer(avctx, avctx->coded_frame);
108 av_freep(&avctx->coded_frame);
113 AVCodec ff_v410_decoder = {
115 .type = AVMEDIA_TYPE_VIDEO,
117 .init = v410_decode_init,
118 .decode = v410_decode_frame,
119 .close = v410_decode_close,
120 .capabilities = CODEC_CAP_DR1,
121 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),