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/*
* y41p 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" |
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#include "internal.h" |
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static av_cold int y41p_encode_init(AVCodecContext *avctx)
{
if (avctx->width & 7) {
av_log(avctx, AV_LOG_ERROR, "y41p requires width to be divisible by 8.\n");
return AVERROR_INVALIDDATA;
}
|
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avctx->coded_frame = av_frame_alloc(); |
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avctx->bits_per_coded_sample = 12; |
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if (!avctx->coded_frame) {
av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
return AVERROR(ENOMEM);
}
return 0;
}
|
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static int y41p_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *pic, int *got_packet) |
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{ |
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uint8_t *dst; |
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uint8_t *y, *u, *v; |
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int i, j, ret; |
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|
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if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 1.5)) < 0) |
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return ret; |
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avctx->coded_frame->key_frame = 1; |
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avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
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dst = pkt->data; |
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for (i = avctx->height - 1; i >= 0; i--) {
y = &pic->data[0][i * pic->linesize[0]];
u = &pic->data[1][i * pic->linesize[1]];
v = &pic->data[2][i * pic->linesize[2]];
for (j = 0; j < avctx->width; j += 8) {
*(dst++) = *(u++);
*(dst++) = *(y++);
*(dst++) = *(v++);
*(dst++) = *(y++);
*(dst++) = *(u++);
*(dst++) = *(y++);
*(dst++) = *(v++);
*(dst++) = *(y++);
*(dst++) = *(y++);
*(dst++) = *(y++);
*(dst++) = *(y++);
*(dst++) = *(y++);
}
}
|
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pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0; |
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}
static av_cold int y41p_encode_close(AVCodecContext *avctx)
{
av_freep(&avctx->coded_frame);
return 0;
}
AVCodec ff_y41p_encoder = {
.name = "y41p", |
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.long_name = NULL_IF_CONFIG_SMALL("Uncompressed YUV 4:1:1 12-bit"), |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_Y41P, |
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.init = y41p_encode_init, |
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.encode2 = y41p_encode_frame, |
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.close = y41p_encode_close, |
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.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV411P,
AV_PIX_FMT_NONE }, |
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}; |