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
26 #include "libavutil/bswap.h"
28 #define READ_PIXELS(a, b, c) \
30 val = av_le2ne32(*src++); \
32 *b++ = (val >> 10) & 0x3FF; \
33 *c++ = (val >> 20) & 0x3FF; \
36 static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
41 for( i = 0; i < width-5; i += 6 ){
49 static av_cold int decode_init(AVCodecContext *avctx)
51 V210DecContext *s = avctx->priv_data;
53 if (avctx->width & 1) {
54 av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n");
57 avctx->pix_fmt = PIX_FMT_YUV422P10;
58 avctx->bits_per_raw_sample = 10;
60 avctx->coded_frame = avcodec_alloc_frame();
61 if (!avctx->coded_frame)
62 return AVERROR(ENOMEM);
64 s->unpack_frame = v210_planar_unpack_c;
72 static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
75 V210DecContext *s = avctx->priv_data;
77 int h, w, stride, aligned_input;
78 AVFrame *pic = avctx->coded_frame;
79 const uint8_t *psrc = avpkt->data;
82 if (s->custom_stride )
83 stride = s->custom_stride;
85 int aligned_width = ((avctx->width + 47) / 48) * 48;
86 stride = aligned_width * 8 / 3;
89 aligned_input = !((uintptr_t)psrc & 0xf) && !(stride & 0xf);
90 if (aligned_input != s->aligned_input) {
91 s->aligned_input = aligned_input;
97 avctx->release_buffer(avctx, pic);
99 if (avpkt->size < stride * avctx->height) {
100 av_log(avctx, AV_LOG_ERROR, "packet too small\n");
105 if (avctx->get_buffer(avctx, pic) < 0)
108 y = (uint16_t*)pic->data[0];
109 u = (uint16_t*)pic->data[1];
110 v = (uint16_t*)pic->data[2];
111 pic->pict_type = AV_PICTURE_TYPE_I;
114 for (h = 0; h < avctx->height; h++) {
115 const uint32_t *src = (const uint32_t*)psrc;
118 w = (avctx->width / 6) * 6;
119 s->unpack_frame(src, y, u, v, w);
126 if (w < avctx->width - 1) {
127 READ_PIXELS(u, y, v);
129 val = av_le2ne32(*src++);
131 if (w < avctx->width - 3) {
132 *u++ = (val >> 10) & 0x3FF;
133 *y++ = (val >> 20) & 0x3FF;
135 val = av_le2ne32(*src++);
137 *y++ = (val >> 10) & 0x3FF;
142 y += pic->linesize[0] / 2 - avctx->width;
143 u += pic->linesize[1] / 2 - avctx->width / 2;
144 v += pic->linesize[2] / 2 - avctx->width / 2;
147 *data_size = sizeof(AVFrame);
148 *(AVFrame*)data = *avctx->coded_frame;
153 static av_cold int decode_close(AVCodecContext *avctx)
155 AVFrame *pic = avctx->coded_frame;
157 avctx->release_buffer(avctx, pic);
158 av_freep(&avctx->coded_frame);
163 #define V210DEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
164 static const AVOption v210dec_options[] = {
165 {"custom_stride", "Custom V210 stride", offsetof(V210DecContext, custom_stride), FF_OPT_TYPE_INT,
166 {.dbl = 0}, INT_MIN, INT_MAX, V210DEC_FLAGS},
170 static const AVClass v210dec_class = {
172 av_default_item_name,
174 LIBAVUTIL_VERSION_INT,
177 AVCodec ff_v210_decoder = {
179 .type = AVMEDIA_TYPE_VIDEO,
181 .priv_data_size = sizeof(V210DecContext),
183 .close = decode_close,
184 .decode = decode_frame,
185 .capabilities = CODEC_CAP_DR1,
186 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
187 .priv_class = &v210dec_class,