4 * Copyright (c) 2012 Paul B Mahol
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 y41p_encode_init(AVCodecContext *avctx)
28 if (avctx->width & 7) {
29 av_log(avctx, AV_LOG_ERROR, "y41p requires width to be divisible by 8.\n");
30 return AVERROR_INVALIDDATA;
33 avctx->coded_frame = avcodec_alloc_frame();
34 avctx->bits_per_coded_sample = 12;
36 if (!avctx->coded_frame) {
37 av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
38 return AVERROR(ENOMEM);
44 static int y41p_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
45 const AVFrame *pic, int *got_packet)
51 if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 1.5)) < 0)
54 avctx->coded_frame->key_frame = 1;
55 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
58 for (i = avctx->height - 1; i >= 0; i--) {
59 y = &pic->data[0][i * pic->linesize[0]];
60 u = &pic->data[1][i * pic->linesize[1]];
61 v = &pic->data[2][i * pic->linesize[2]];
62 for (j = 0; j < avctx->width; j += 8) {
80 pkt->flags |= AV_PKT_FLAG_KEY;
85 static av_cold int y41p_encode_close(AVCodecContext *avctx)
87 av_freep(&avctx->coded_frame);
92 AVCodec ff_y41p_encoder = {
94 .type = AVMEDIA_TYPE_VIDEO,
95 .id = AV_CODEC_ID_Y41P,
96 .init = y41p_encode_init,
97 .encode2 = y41p_encode_frame,
98 .close = y41p_encode_close,
99 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV411P,
101 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed YUV 4:1:1 12-bit"),