aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* v308 encoder
*
* Copyright (c) 2011 Carl Eugen Hoyos
*
* 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 "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "internal.h"
static av_cold int v308_encode_init(AVCodecContext *avctx)
{
if (avctx->width & 1) {
av_log(avctx, AV_LOG_ERROR, "v308 requires width to be even.\n");
return AVERROR_INVALIDDATA;
}
avctx->bits_per_coded_sample = 24;
avctx->bit_rate = ff_guess_coded_bitrate(avctx);
return 0;
}
static int v308_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pic, int *got_packet)
{
uint8_t *dst;
uint8_t *y, *u, *v;
int i, j, ret;
if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 3, 0)) < 0)
return ret;
dst = pkt->data;
y = pic->data[0];
u = pic->data[1];
v = pic->data[2];
for (i = 0; i < avctx->height; i++) {
for (j = 0; j < avctx->width; j++) {
*dst++ = v[j];
*dst++ = y[j];
*dst++ = u[j];
}
y += pic->linesize[0];
u += pic->linesize[1];
v += pic->linesize[2];
}
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0;
}
static av_cold int v308_encode_close(AVCodecContext *avctx)
{
return 0;
}
AVCodec ff_v308_encoder = {
.name = "v308",
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_V308,
.init = v308_encode_init,
.encode2 = v308_encode_frame,
.close = v308_encode_close,
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE },
.capabilities = AV_CODEC_CAP_INTRA_ONLY,
};
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