0,0 → 1,91 |
/* |
* libquicktime yuv4 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 "avcodec.h" |
#include "internal.h" |
|
static av_cold int yuv4_encode_init(AVCodecContext *avctx) |
{ |
avctx->coded_frame = avcodec_alloc_frame(); |
|
if (!avctx->coded_frame) { |
av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n"); |
return AVERROR(ENOMEM); |
} |
|
return 0; |
} |
|
static int yuv4_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, 6 * (avctx->width + 1 >> 1) * (avctx->height + 1 >> 1))) < 0) |
return ret; |
dst = pkt->data; |
|
avctx->coded_frame->key_frame = 1; |
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
|
y = pic->data[0]; |
u = pic->data[1]; |
v = pic->data[2]; |
|
for (i = 0; i < avctx->height + 1 >> 1; i++) { |
for (j = 0; j < avctx->width + 1 >> 1; j++) { |
*dst++ = u[j] ^ 0x80; |
*dst++ = v[j] ^ 0x80; |
*dst++ = y[ 2 * j ]; |
*dst++ = y[ 2 * j + 1]; |
*dst++ = y[pic->linesize[0] + 2 * j ]; |
*dst++ = y[pic->linesize[0] + 2 * j + 1]; |
} |
y += 2 * 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 yuv4_encode_close(AVCodecContext *avctx) |
{ |
av_freep(&avctx->coded_frame); |
|
return 0; |
} |
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AVCodec ff_yuv4_encoder = { |
.name = "yuv4", |
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:2:0"), |
.type = AVMEDIA_TYPE_VIDEO, |
.id = AV_CODEC_ID_YUV4, |
.init = yuv4_encode_init, |
.encode2 = yuv4_encode_frame, |
.close = yuv4_encode_close, |
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, |
}; |