Imported Debian version 2.5.0~trusty1.1
[deb_ffmpeg.git] / ffmpeg / libavcodec / v410enc.c
1 /*
2 * v410 encoder
3 *
4 * Copyright (c) 2011 Derek Buitenhuis
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/common.h"
24 #include "libavutil/intreadwrite.h"
25 #include "avcodec.h"
26 #include "internal.h"
27
28 static av_cold int v410_encode_init(AVCodecContext *avctx)
29 {
30 if (avctx->width & 1) {
31 av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n");
32 return AVERROR_INVALIDDATA;
33 }
34
35 avctx->coded_frame = av_frame_alloc();
36
37 if (!avctx->coded_frame) {
38 av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
39 return AVERROR(ENOMEM);
40 }
41
42 return 0;
43 }
44
45 static int v410_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
46 const AVFrame *pic, int *got_packet)
47 {
48 uint8_t *dst;
49 uint16_t *y, *u, *v;
50 uint32_t val;
51 int i, j, ret;
52
53 if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 4)) < 0)
54 return ret;
55 dst = pkt->data;
56
57 avctx->coded_frame->key_frame = 1;
58 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
59
60 y = (uint16_t *)pic->data[0];
61 u = (uint16_t *)pic->data[1];
62 v = (uint16_t *)pic->data[2];
63
64 for (i = 0; i < avctx->height; i++) {
65 for (j = 0; j < avctx->width; j++) {
66 val = u[j] << 2;
67 val |= y[j] << 12;
68 val |= (uint32_t) v[j] << 22;
69 AV_WL32(dst, val);
70 dst += 4;
71 }
72 y += pic->linesize[0] >> 1;
73 u += pic->linesize[1] >> 1;
74 v += pic->linesize[2] >> 1;
75 }
76
77 pkt->flags |= AV_PKT_FLAG_KEY;
78 *got_packet = 1;
79 return 0;
80 }
81
82 static av_cold int v410_encode_close(AVCodecContext *avctx)
83 {
84 av_freep(&avctx->coded_frame);
85
86 return 0;
87 }
88
89 AVCodec ff_v410_encoder = {
90 .name = "v410",
91 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
92 .type = AVMEDIA_TYPE_VIDEO,
93 .id = AV_CODEC_ID_V410,
94 .init = v410_encode_init,
95 .encode2 = v410_encode_frame,
96 .close = v410_encode_close,
97 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE },
98 };