2 * libquicktime yuv4 encoder
4 * Copyright (c) 2011 Carl Eugen Hoyos
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 static av_cold int yuv4_encode_init(AVCodecContext *avctx)
31 static int yuv4_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
32 const AVFrame *pic, int *got_packet)
38 if ((ret = ff_alloc_packet2(avctx, pkt, 6 * (avctx->width + 1 >> 1) * (avctx->height + 1 >> 1), 0)) < 0)
42 avctx->coded_frame->key_frame = 1;
43 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
49 for (i = 0; i < avctx->height + 1 >> 1; i++) {
50 for (j = 0; j < avctx->width + 1 >> 1; j++) {
54 *dst++ = y[ 2 * j + 1];
55 *dst++ = y[pic->linesize[0] + 2 * j ];
56 *dst++ = y[pic->linesize[0] + 2 * j + 1];
58 y += 2 * pic->linesize[0];
59 u += pic->linesize[1];
60 v += pic->linesize[2];
63 pkt->flags |= AV_PKT_FLAG_KEY;
68 static av_cold int yuv4_encode_close(AVCodecContext *avctx)
73 AVCodec ff_yuv4_encoder = {
75 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:2:0"),
76 .type = AVMEDIA_TYPE_VIDEO,
77 .id = AV_CODEC_ID_YUV4,
78 .init = yuv4_encode_init,
79 .encode2 = yuv4_encode_frame,
80 .close = yuv4_encode_close,
81 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },