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
v410_encode_init(AVCodecContext * avctx)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->bits_per_coded_sample = 32;
36 avctx->bit_rate = ff_guess_coded_bitrate(avctx);
37
38 return 0;
39 }
40
v410_encode_frame(AVCodecContext * avctx,AVPacket * pkt,const AVFrame * pic,int * got_packet)41 static int v410_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
42 const AVFrame *pic, int *got_packet)
43 {
44 uint8_t *dst;
45 uint16_t *y, *u, *v;
46 uint32_t val;
47 int i, j, ret;
48
49 if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 4,
50 avctx->width * avctx->height * 4)) < 0)
51 return ret;
52 dst = pkt->data;
53
54 #if FF_API_CODED_FRAME
55 FF_DISABLE_DEPRECATION_WARNINGS
56 avctx->coded_frame->key_frame = 1;
57 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
58 FF_ENABLE_DEPRECATION_WARNINGS
59 #endif
60
61 y = (uint16_t *)pic->data[0];
62 u = (uint16_t *)pic->data[1];
63 v = (uint16_t *)pic->data[2];
64
65 for (i = 0; i < avctx->height; i++) {
66 for (j = 0; j < avctx->width; j++) {
67 val = u[j] << 2;
68 val |= y[j] << 12;
69 val |= (uint32_t) v[j] << 22;
70 AV_WL32(dst, val);
71 dst += 4;
72 }
73 y += pic->linesize[0] >> 1;
74 u += pic->linesize[1] >> 1;
75 v += pic->linesize[2] >> 1;
76 }
77
78 pkt->flags |= AV_PKT_FLAG_KEY;
79 *got_packet = 1;
80 return 0;
81 }
82
83 AVCodec ff_v410_encoder = {
84 .name = "v410",
85 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
86 .type = AVMEDIA_TYPE_VIDEO,
87 .id = AV_CODEC_ID_V410,
88 .init = v410_encode_init,
89 .encode2 = v410_encode_frame,
90 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE },
91 };
92