1 /*
2 * v308 encoder
3 *
4 * Copyright (c) 2011 Carl Eugen Hoyos
5 *
6 * This file is part of FFmpeg.
7 *
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.
12 *
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.
17 *
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
21 */
22
23 #include "libavutil/intreadwrite.h"
24 #include "avcodec.h"
25 #include "internal.h"
26
v308_encode_init(AVCodecContext * avctx)27 static av_cold int v308_encode_init(AVCodecContext *avctx)
28 {
29 if (avctx->width & 1) {
30 av_log(avctx, AV_LOG_ERROR, "v308 requires width to be even.\n");
31 return AVERROR_INVALIDDATA;
32 }
33
34 avctx->bits_per_coded_sample = 24;
35 avctx->bit_rate = ff_guess_coded_bitrate(avctx);
36
37 return 0;
38 }
39
v308_encode_frame(AVCodecContext * avctx,AVPacket * pkt,const AVFrame * pic,int * got_packet)40 static int v308_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
41 const AVFrame *pic, int *got_packet)
42 {
43 uint8_t *dst;
44 uint8_t *y, *u, *v;
45 int i, j, ret;
46
47 if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 3, 0)) < 0)
48 return ret;
49 dst = pkt->data;
50
51 y = pic->data[0];
52 u = pic->data[1];
53 v = pic->data[2];
54
55 for (i = 0; i < avctx->height; i++) {
56 for (j = 0; j < avctx->width; j++) {
57 *dst++ = v[j];
58 *dst++ = y[j];
59 *dst++ = u[j];
60 }
61 y += pic->linesize[0];
62 u += pic->linesize[1];
63 v += pic->linesize[2];
64 }
65
66 pkt->flags |= AV_PKT_FLAG_KEY;
67 *got_packet = 1;
68 return 0;
69 }
70
71 AVCodec ff_v308_encoder = {
72 .name = "v308",
73 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"),
74 .type = AVMEDIA_TYPE_VIDEO,
75 .id = AV_CODEC_ID_V308,
76 .init = v308_encode_init,
77 .encode2 = v308_encode_frame,
78 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE },
79 };
80