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r210enc.c
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r210enc.c
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/*
* R210 encoder
*
* Copyright (c) 2012 Paul B Mahol
*
* 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 "bytestream.h"
static av_cold int encode_init(AVCodecContext *avctx)
{
avctx->coded_frame = avcodec_alloc_frame();
if (!avctx->coded_frame)
return AVERROR(ENOMEM);
return 0;
}
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pic, int *got_packet)
{
int i, j, ret;
int aligned_width = FFALIGN(avctx->width,
avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64);
int pad = (aligned_width - avctx->width) * 4;
uint8_t *src_line;
uint8_t *dst;
if ((ret = ff_alloc_packet2(avctx, pkt, 4 * aligned_width * avctx->height)) < 0)
return ret;
avctx->coded_frame->reference = 0;
avctx->coded_frame->key_frame = 1;
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
src_line = pic->data[0];
dst = pkt->data;
for (i = 0; i < avctx->height; i++) {
uint16_t *src = (uint16_t *)src_line;
for (j = 0; j < avctx->width; j++) {
uint32_t pixel;
uint16_t r = *src++ >> 6;
uint16_t g = *src++ >> 6;
uint16_t b = *src++ >> 4;
if (avctx->codec_id == AV_CODEC_ID_R210)
pixel = (r << 20) | (g << 10) | b >> 2;
else
pixel = (r << 22) | (g << 12) | b;
if (avctx->codec_id == AV_CODEC_ID_AVRP)
bytestream_put_le32(&dst, pixel);
else
bytestream_put_be32(&dst, pixel);
}
memset(dst, 0, pad);
dst += pad;
src_line += pic->linesize[0];
}
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0;
}
static av_cold int encode_close(AVCodecContext *avctx)
{
av_freep(&avctx->coded_frame);
return 0;
}
#if CONFIG_R210_ENCODER
AVCodec ff_r210_encoder = {
.name = "r210",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_R210,
.init = encode_init,
.encode2 = encode_frame,
.close = encode_close,
.pix_fmts = (const enum PixelFormat[]) { PIX_FMT_RGB48, PIX_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
};
#endif
#if CONFIG_R10K_ENCODER
AVCodec ff_r10k_encoder = {
.name = "r10k",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_R10K,
.init = encode_init,
.encode2 = encode_frame,
.close = encode_close,
.pix_fmts = (const enum PixelFormat[]) { PIX_FMT_RGB48, PIX_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
};
#endif
#if CONFIG_AVRP_ENCODER
AVCodec ff_avrp_encoder = {
.name = "avrp",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_AVRP,
.init = encode_init,
.encode2 = encode_frame,
.close = encode_close,
.pix_fmts = (const enum PixelFormat[]) { PIX_FMT_RGB48, PIX_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
};
#endif