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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 | }; |