132 lines
3.9 KiB
C
132 lines
3.9 KiB
C
/*
|
|
* Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "avcodec.h"
|
|
#include "internal.h"
|
|
#include "libavutil/bswap.h"
|
|
#include "libavutil/internal.h"
|
|
#include "libavutil/mem.h"
|
|
|
|
static av_cold int decode_init(AVCodecContext *avctx)
|
|
{
|
|
if (avctx->width & 1) {
|
|
av_log(avctx, AV_LOG_ERROR, "v210x needs even width\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
|
|
avctx->bits_per_raw_sample = 10;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
|
|
AVPacket *avpkt)
|
|
{
|
|
const uint32_t *src = (const uint32_t *)avpkt->data;
|
|
AVFrame *pic = data;
|
|
int width = avctx->width;
|
|
int y = 0;
|
|
uint16_t *ydst, *udst, *vdst, *yend;
|
|
int ret;
|
|
|
|
if (avpkt->size < avctx->width * avctx->height * 8 / 3) {
|
|
av_log(avctx, AV_LOG_ERROR, "Packet too small\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (avpkt->size > avctx->width * avctx->height * 8 / 3) {
|
|
avpriv_request_sample(avctx, "(Probably) padded data");
|
|
}
|
|
|
|
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
|
|
return ret;
|
|
|
|
ydst = (uint16_t *)pic->data[0];
|
|
udst = (uint16_t *)pic->data[1];
|
|
vdst = (uint16_t *)pic->data[2];
|
|
yend = ydst + width;
|
|
pic->pict_type = AV_PICTURE_TYPE_I;
|
|
pic->key_frame = 1;
|
|
|
|
for (;;) {
|
|
uint32_t v = av_be2ne32(*src++);
|
|
*udst++ = (v >> 16) & 0xFFC0;
|
|
*ydst++ = (v >> 6 ) & 0xFFC0;
|
|
*vdst++ = (v << 4 ) & 0xFFC0;
|
|
|
|
v = av_be2ne32(*src++);
|
|
*ydst++ = (v >> 16) & 0xFFC0;
|
|
|
|
if (ydst >= yend) {
|
|
ydst += pic->linesize[0] / 2 - width;
|
|
udst += pic->linesize[1] / 2 - width / 2;
|
|
vdst += pic->linesize[2] / 2 - width / 2;
|
|
yend = ydst + width;
|
|
if (++y >= avctx->height)
|
|
break;
|
|
}
|
|
|
|
*udst++ = (v >> 6 ) & 0xFFC0;
|
|
*ydst++ = (v << 4 ) & 0xFFC0;
|
|
|
|
v = av_be2ne32(*src++);
|
|
*vdst++ = (v >> 16) & 0xFFC0;
|
|
*ydst++ = (v >> 6 ) & 0xFFC0;
|
|
|
|
if (ydst >= yend) {
|
|
ydst += pic->linesize[0] / 2 - width;
|
|
udst += pic->linesize[1] / 2 - width / 2;
|
|
vdst += pic->linesize[2] / 2 - width / 2;
|
|
yend = ydst + width;
|
|
if (++y >= avctx->height)
|
|
break;
|
|
}
|
|
|
|
*udst++ = (v << 4 ) & 0xFFC0;
|
|
|
|
v = av_be2ne32(*src++);
|
|
*ydst++ = (v >> 16) & 0xFFC0;
|
|
*vdst++ = (v >> 6 ) & 0xFFC0;
|
|
*ydst++ = (v << 4 ) & 0xFFC0;
|
|
if (ydst >= yend) {
|
|
ydst += pic->linesize[0] / 2 - width;
|
|
udst += pic->linesize[1] / 2 - width / 2;
|
|
vdst += pic->linesize[2] / 2 - width / 2;
|
|
yend = ydst + width;
|
|
if (++y >= avctx->height)
|
|
break;
|
|
}
|
|
}
|
|
|
|
*got_frame = 1;
|
|
|
|
return avpkt->size;
|
|
}
|
|
|
|
AVCodec ff_v210x_decoder = {
|
|
.name = "v210x",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_V210X,
|
|
.init = decode_init,
|
|
.decode = decode_frame,
|
|
.capabilities = CODEC_CAP_DR1,
|
|
};
|