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 "codec_internal.h"
27 #include "encode.h"
28 #include "internal.h"
29
v410_encode_init(AVCodecContext * avctx)30 static av_cold int v410_encode_init(AVCodecContext *avctx)
31 {
32 if (avctx->width & 1) {
33 av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n");
34 return AVERROR_INVALIDDATA;
35 }
36
37 avctx->bits_per_coded_sample = 32;
38 avctx->bit_rate = ff_guess_coded_bitrate(avctx);
39
40 return 0;
41 }
42
v410_encode_frame(AVCodecContext * avctx,AVPacket * pkt,const AVFrame * pic,int * got_packet)43 static int v410_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
44 const AVFrame *pic, int *got_packet)
45 {
46 uint8_t *dst;
47 uint16_t *y, *u, *v;
48 uint32_t val;
49 int i, j, ret;
50
51 ret = ff_get_encode_buffer(avctx, pkt, avctx->width * avctx->height * 4, 0);
52 if (ret < 0)
53 return ret;
54 dst = pkt->data;
55
56 y = (uint16_t *)pic->data[0];
57 u = (uint16_t *)pic->data[1];
58 v = (uint16_t *)pic->data[2];
59
60 for (i = 0; i < avctx->height; i++) {
61 for (j = 0; j < avctx->width; j++) {
62 val = u[j] << 2;
63 val |= y[j] << 12;
64 val |= (uint32_t) v[j] << 22;
65 AV_WL32(dst, val);
66 dst += 4;
67 }
68 y += pic->linesize[0] >> 1;
69 u += pic->linesize[1] >> 1;
70 v += pic->linesize[2] >> 1;
71 }
72
73 *got_packet = 1;
74 return 0;
75 }
76
77 const FFCodec ff_v410_encoder = {
78 .p.name = "v410",
79 .p.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
80 .p.type = AVMEDIA_TYPE_VIDEO,
81 .p.id = AV_CODEC_ID_V410,
82 .p.capabilities = AV_CODEC_CAP_DR1,
83 .init = v410_encode_init,
84 FF_CODEC_ENCODE_CB(v410_encode_frame),
85 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE },
86 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
87 };
88