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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 "codec_internal.h"
#include "config_components.h"
#include "internal.h"
#include "libavutil/bswap.h"
#include "libavutil/common.h"
static av_cold int decode_init(AVCodecContext *avctx)
{
avctx->pix_fmt = AV_PIX_FMT_GBRP10;
avctx->bits_per_raw_sample = 10;
return 0;
}
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
AVPacket *avpkt)
{
int h, w, ret;
AVFrame *pic = data;
const uint32_t *src = (const uint32_t *)avpkt->data;
int aligned_width = FFALIGN(avctx->width,
avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
uint8_t *g_line, *b_line, *r_line;
int r10 = (avctx->codec_tag & 0xFFFFFF) == MKTAG('r', '1', '0', 0);
int le = avctx->codec_tag == MKTAG('R', '1', '0', 'k') &&
avctx->extradata_size >= 12 && !memcmp(&avctx->extradata[4], "DpxE", 4) &&
!avctx->extradata[11];
if (avpkt->size < 4 * aligned_width * avctx->height) {
av_log(avctx, AV_LOG_ERROR, "packet too small\n");
return AVERROR_INVALIDDATA;
}
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
pic->pict_type = AV_PICTURE_TYPE_I;
pic->key_frame = 1;
g_line = pic->data[0];
b_line = pic->data[1];
r_line = pic->data[2];
for (h = 0; h < avctx->height; h++) {
uint16_t *dstg = (uint16_t *)g_line;
uint16_t *dstb = (uint16_t *)b_line;
uint16_t *dstr = (uint16_t *)r_line;
for (w = 0; w < avctx->width; w++) {
uint32_t pixel;
uint16_t r, g, b;
if (avctx->codec_id == AV_CODEC_ID_AVRP || r10 || le) {
pixel = av_le2ne32(*src++);
} else {
pixel = av_be2ne32(*src++);
}
if (avctx->codec_id == AV_CODEC_ID_R210) {
b = pixel & 0x3ff;
g = (pixel >> 10) & 0x3ff;
r = (pixel >> 20) & 0x3ff;
} else if (r10) {
r = pixel & 0x3ff;
g = (pixel >> 10) & 0x3ff;
b = (pixel >> 20) & 0x3ff;
} else {
b = (pixel >> 2) & 0x3ff;
g = (pixel >> 12) & 0x3ff;
r = (pixel >> 22) & 0x3ff;
}
*dstr++ = r;
*dstg++ = g;
*dstb++ = b;
}
src += aligned_width - avctx->width;
g_line += pic->linesize[0];
b_line += pic->linesize[1];
r_line += pic->linesize[2];
}
*got_frame = 1;
return avpkt->size;
}
#if CONFIG_R210_DECODER
const AVCodec ff_r210_decoder = {
.name = "r210",
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_R210,
.init = decode_init,
.decode = decode_frame,
.capabilities = AV_CODEC_CAP_DR1,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
};
#endif
#if CONFIG_R10K_DECODER
const AVCodec ff_r10k_decoder = {
.name = "r10k",
.long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_R10K,
.init = decode_init,
.decode = decode_frame,
.capabilities = AV_CODEC_CAP_DR1,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
};
#endif
#if CONFIG_AVRP_DECODER
const AVCodec ff_avrp_decoder = {
.name = "avrp",
.long_name = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_AVRP,
.init = decode_init,
.decode = decode_frame,
.capabilities = AV_CODEC_CAP_DR1,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
};
#endif
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