4 * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
5 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
7 * This file is part of FFmpeg.
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "libavutil/bswap.h"
27 static av_cold int decode_init(AVCodecContext *avctx)
29 if (avctx->width & 1) {
30 av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n");
33 avctx->pix_fmt = PIX_FMT_YUV422P16;
34 avctx->bits_per_raw_sample = 10;
36 avctx->coded_frame = avcodec_alloc_frame();
41 static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
45 AVFrame *pic = avctx->coded_frame;
46 const uint8_t *psrc = avpkt->data;
48 int aligned_width = ((avctx->width + 47) / 48) * 48;
49 int stride = aligned_width * 8 / 3;
52 avctx->release_buffer(avctx, pic);
54 if (avpkt->size < stride * avctx->height) {
55 av_log(avctx, AV_LOG_ERROR, "packet too small\n");
60 if (avctx->get_buffer(avctx, pic) < 0)
63 y = (uint16_t*)pic->data[0];
64 u = (uint16_t*)pic->data[1];
65 v = (uint16_t*)pic->data[2];
66 pic->pict_type = FF_I_TYPE;
69 #define READ_PIXELS(a, b, c) \
71 val = le2me_32(*src++); \
73 *b++ = (val >> 4) & 0xFFC0; \
74 *c++ = (val >> 14) & 0xFFC0; \
77 for (h = 0; h < avctx->height; h++) {
78 const uint32_t *src = (const uint32_t*)psrc;
80 for (w = 0; w < avctx->width - 5; w += 6) {
86 if (w < avctx->width - 1) {
89 val = le2me_32(*src++);
92 if (w < avctx->width - 3) {
93 *u++ = (val >> 4) & 0xFFC0;
94 *y++ = (val >> 14) & 0xFFC0;
96 val = le2me_32(*src++);
98 *y++ = (val >> 4) & 0xFFC0;
102 y += pic->linesize[0] / 2 - avctx->width;
103 u += pic->linesize[1] / 2 - avctx->width / 2;
104 v += pic->linesize[2] / 2 - avctx->width / 2;
107 *data_size = sizeof(AVFrame);
108 *(AVFrame*)data = *avctx->coded_frame;
113 static av_cold int decode_close(AVCodecContext *avctx)
115 AVFrame *pic = avctx->coded_frame;
117 avctx->release_buffer(avctx, pic);
118 av_freep(&avctx->coded_frame);
123 AVCodec v210_decoder = {
133 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),