blob: 196c575c09772d56d12abefa8d8b14174dc5e66e
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 = AV_CODEC_CAP_DR1, |
91 | .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
92 | }; |
93 | #endif |
94 | #if CONFIG_V408_DECODER |
95 | AVCodec ff_v408_decoder = { |
96 | .name = "v408", |
97 | .long_name = NULL_IF_CONFIG_SMALL("Uncompressed packed QT 4:4:4:4"), |
98 | .type = AVMEDIA_TYPE_VIDEO, |
99 | .id = AV_CODEC_ID_V408, |
100 | .init = v408_decode_init, |
101 | .decode = v408_decode_frame, |
102 | .capabilities = AV_CODEC_CAP_DR1, |
103 | .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, |
104 | }; |
105 | #endif |
106 |