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/*
* R210 decoder
*
* Copyright (c) 2009 Reimar Doeffinger <Reimar.Doeffinger@gmx.de>
*
* 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 "libavutil/bswap.h"
static av_cold int decode_init(AVCodecContext *avctx)
{
avctx->pix_fmt = PIX_FMT_RGB48;
avctx->bits_per_raw_sample = 10;
avctx->coded_frame = avcodec_alloc_frame();
return 0;
}
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
AVPacket *avpkt)
{
int h, w;
AVFrame *pic = avctx->coded_frame;
const uint32_t *src = (const uint32_t *)avpkt->data;
int aligned_width = FFALIGN(avctx->width, 64);
uint8_t *dst_line;
if (pic->data[0])
avctx->release_buffer(avctx, pic);
if (avpkt->size < 4 * aligned_width * avctx->height) {
av_log(avctx, AV_LOG_ERROR, "packet too small\n");
return -1;
}
pic->reference = 0;
if (avctx->get_buffer(avctx, pic) < 0)
return -1;
pic->pict_type = AV_PICTURE_TYPE_I;
pic->key_frame = 1;
dst_line = pic->data[0];
for (h = 0; h < avctx->height; h++) {
uint16_t *dst = (uint16_t *)dst_line;
for (w = 0; w < avctx->width; w++) {
uint32_t pixel = av_be2ne32(*src++);
uint16_t r, g, b;
if (avctx->codec_id==CODEC_ID_R210) {
b = pixel << 6;
g = (pixel >> 4) & 0xffc0;
r = (pixel >> 14) & 0xffc0;
} else {
b = pixel << 4;
g = (pixel >> 6) & 0xffc0;
r = (pixel >> 16) & 0xffc0;
}
*dst++ = r | (r >> 10);
*dst++ = g | (g >> 10);
*dst++ = b | (b >> 10);
}
src += aligned_width - avctx->width;
dst_line += pic->linesize[0];
}
*data_size = sizeof(AVFrame);
*(AVFrame*)data = *avctx->coded_frame;
return avpkt->size;
}
static av_cold int decode_close(AVCodecContext *avctx)
{
AVFrame *pic = avctx->coded_frame;
if (pic->data[0])
avctx->release_buffer(avctx, pic);
av_freep(&avctx->coded_frame);
return 0;
}
#if CONFIG_R210_DECODER
AVCodec ff_r210_decoder = {
.name = "r210",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_R210,
.init = decode_init,
.close = decode_close,
.decode = decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
};
#endif
#if CONFIG_R10K_DECODER
AVCodec ff_r10k_decoder = {
.name = "r10k",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_R10K,
.init = decode_init,
.close = decode_close,
.decode = decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
};
#endif
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