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"
27 #include "libavutil/internal.h"
28 #include "libavutil/mem.h"
30 #define READ_PIXELS(a, b, c) \
32 val = av_le2ne32(*src++); \
34 *b++ = (val >> 10) & 0x3FF; \
35 *c++ = (val >> 20) & 0x3FF; \
38 static void v210_planar_unpack_c(const uint32_t *src, uint16_t *y, uint16_t *u, uint16_t *v, int width)
43 for( i = 0; i < width-5; i += 6 ){
51 static av_cold int decode_init(AVCodecContext *avctx)
53 V210DecContext *s = avctx->priv_data;
55 if (avctx->width & 1) {
56 av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n");
59 avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
60 avctx->bits_per_raw_sample = 10;
62 avctx->coded_frame = avcodec_alloc_frame();
63 if (!avctx->coded_frame)
64 return AVERROR(ENOMEM);
66 s->unpack_frame = v210_planar_unpack_c;
74 static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
77 V210DecContext *s = avctx->priv_data;
79 int h, w, stride, aligned_input;
80 AVFrame *pic = avctx->coded_frame;
81 const uint8_t *psrc = avpkt->data;
84 if (s->custom_stride )
85 stride = s->custom_stride;
87 int aligned_width = ((avctx->width + 47) / 48) * 48;
88 stride = aligned_width * 8 / 3;
91 if (avpkt->size < stride * avctx->height) {
92 if ((((avctx->width + 23) / 24) * 24 * 8) / 3 * avctx->height == avpkt->size) {
93 stride = avpkt->size / avctx->height;
94 if (!s->stride_warning_shown)
95 av_log(avctx, AV_LOG_WARNING, "Broken v210 with too small padding (64 byte) detected\n");
96 s->stride_warning_shown = 1;
98 av_log(avctx, AV_LOG_ERROR, "packet too small\n");
103 aligned_input = !((uintptr_t)psrc & 0xf) && !(stride & 0xf);
104 if (aligned_input != s->aligned_input) {
105 s->aligned_input = aligned_input;
111 avctx->release_buffer(avctx, pic);
114 if (avctx->get_buffer(avctx, pic) < 0)
117 y = (uint16_t*)pic->data[0];
118 u = (uint16_t*)pic->data[1];
119 v = (uint16_t*)pic->data[2];
120 pic->pict_type = AV_PICTURE_TYPE_I;
123 for (h = 0; h < avctx->height; h++) {
124 const uint32_t *src = (const uint32_t*)psrc;
127 w = (avctx->width / 6) * 6;
128 s->unpack_frame(src, y, u, v, w);
135 if (w < avctx->width - 1) {
136 READ_PIXELS(u, y, v);
138 val = av_le2ne32(*src++);
140 if (w < avctx->width - 3) {
141 *u++ = (val >> 10) & 0x3FF;
142 *y++ = (val >> 20) & 0x3FF;
144 val = av_le2ne32(*src++);
146 *y++ = (val >> 10) & 0x3FF;
151 y += pic->linesize[0] / 2 - avctx->width;
152 u += pic->linesize[1] / 2 - avctx->width / 2;
153 v += pic->linesize[2] / 2 - avctx->width / 2;
156 *data_size = sizeof(AVFrame);
157 *(AVFrame*)data = *avctx->coded_frame;
162 static av_cold int decode_close(AVCodecContext *avctx)
164 AVFrame *pic = avctx->coded_frame;
166 avctx->release_buffer(avctx, pic);
167 av_freep(&avctx->coded_frame);
172 #define V210DEC_FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
173 static const AVOption v210dec_options[] = {
174 {"custom_stride", "Custom V210 stride", offsetof(V210DecContext, custom_stride), FF_OPT_TYPE_INT,
175 {.i64 = 0}, INT_MIN, INT_MAX, V210DEC_FLAGS},
179 static const AVClass v210dec_class = {
181 av_default_item_name,
183 LIBAVUTIL_VERSION_INT,
186 AVCodec ff_v210_decoder = {
188 .type = AVMEDIA_TYPE_VIDEO,
189 .id = AV_CODEC_ID_V210,
190 .priv_data_size = sizeof(V210DecContext),
192 .close = decode_close,
193 .decode = decode_frame,
194 .capabilities = CODEC_CAP_DR1,
195 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
196 .priv_class = &v210dec_class,