mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
80 lines
2.4 KiB
80 lines
2.4 KiB
/* |
|
* 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) |
|
{ |
|
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)) < 0) |
|
return ret; |
|
dst = pkt->data; |
|
|
|
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) |
|
{ |
|
return 0; |
|
} |
|
|
|
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 }, |
|
.capabilities = AV_CODEC_CAP_INTRA_ONLY, |
|
};
|
|
|