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1 | /* |
2 | * v408 decoder | |
3 | * Copyright (c) 2012 Carl Eugen Hoyos | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #include "avcodec.h" | |
23 | #include "internal.h" | |
24 | ||
25 | static av_cold int v408_decode_init(AVCodecContext *avctx) | |
26 | { | |
27 | avctx->pix_fmt = AV_PIX_FMT_YUVA444P; | |
28 | ||
29 | return 0; | |
30 | } | |
31 | ||
32 | static int v408_decode_frame(AVCodecContext *avctx, void *data, | |
33 | int *got_frame, AVPacket *avpkt) | |
34 | { | |
35 | AVFrame *pic = data; | |
36 | const uint8_t *src = avpkt->data; | |
37 | uint8_t *y, *u, *v, *a; | |
38 | int i, j, ret; | |
39 | ||
40 | if (avpkt->size < 4 * avctx->height * avctx->width) { | |
41 | av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n"); | |
42 | return AVERROR(EINVAL); | |
43 | } | |
44 | ||
45 | if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) | |
46 | return ret; | |
47 | ||
48 | pic->key_frame = 1; | |
49 | pic->pict_type = AV_PICTURE_TYPE_I; | |
50 | ||
51 | y = pic->data[0]; | |
52 | u = pic->data[1]; | |
53 | v = pic->data[2]; | |
54 | a = pic->data[3]; | |
55 | ||
56 | for (i = 0; i < avctx->height; i++) { | |
57 | for (j = 0; j < avctx->width; j++) { | |
58 | if (avctx->codec_id==AV_CODEC_ID_AYUV) { | |
59 | v[j] = *src++; | |
60 | u[j] = *src++; | |
61 | y[j] = *src++; | |
62 | a[j] = *src++; | |
63 | } else { | |
64 | u[j] = *src++; | |
65 | y[j] = *src++; | |
66 | v[j] = *src++; | |
67 | a[j] = *src++; | |
68 | } | |
69 | } | |
70 | ||
71 | y += pic->linesize[0]; | |
72 | u += pic->linesize[1]; | |
73 | v += pic->linesize[2]; | |
74 | a += pic->linesize[3]; | |
75 | } | |
76 | ||
77 | *got_frame = 1; | |
78 | ||
79 | return avpkt->size; | |
80 | } | |
81 | ||
82 | #if CONFIG_AYUV_DECODER | |
83 | AVCodec ff_ayuv_decoder = { | |
84 | .name = "ayuv", | |
85 | .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed MS 4:4:4:4"), | |
86 | .type = AVMEDIA_TYPE_VIDEO, | |
87 | .id = AV_CODEC_ID_AYUV, | |
88 | .init = v408_decode_init, | |
89 | .decode = v408_decode_frame, | |
90 | .capabilities = CODEC_CAP_DR1, | |
91 | }; | |
92 | #endif | |
93 | #if CONFIG_V408_DECODER | |
94 | AVCodec ff_v408_decoder = { | |
95 | .name = "v408", | |
96 | .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed QT 4:4:4:4"), | |
97 | .type = AVMEDIA_TYPE_VIDEO, | |
98 | .id = AV_CODEC_ID_V408, | |
99 | .init = v408_decode_init, | |
100 | .decode = v408_decode_frame, | |
101 | .capabilities = CODEC_CAP_DR1, | |
102 | }; | |
103 | #endif |