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1 | /* |
2 | * R210 decoder | |
3 | * | |
4 | * Copyright (c) 2009 Reimar Doeffinger <Reimar.Doeffinger@gmx.de> | |
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 "avcodec.h" | |
24 | #include "internal.h" | |
25 | #include "libavutil/bswap.h" | |
26 | #include "libavutil/common.h" | |
27 | ||
28 | static av_cold int decode_init(AVCodecContext *avctx) | |
29 | { | |
30 | avctx->pix_fmt = AV_PIX_FMT_RGB48; | |
31 | avctx->bits_per_raw_sample = 10; | |
32 | ||
33 | return 0; | |
34 | } | |
35 | ||
36 | static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, | |
37 | AVPacket *avpkt) | |
38 | { | |
39 | int h, w, ret; | |
40 | AVFrame *pic = data; | |
41 | const uint32_t *src = (const uint32_t *)avpkt->data; | |
42 | int aligned_width = FFALIGN(avctx->width, | |
43 | avctx->codec_id == AV_CODEC_ID_R10K ? 1 : 64); | |
44 | uint8_t *dst_line; | |
45 | ||
46 | if (avpkt->size < 4 * aligned_width * avctx->height) { | |
47 | av_log(avctx, AV_LOG_ERROR, "packet too small\n"); | |
48 | return AVERROR_INVALIDDATA; | |
49 | } | |
50 | ||
51 | if ((ret = ff_get_buffer(avctx, pic, 0)) < 0) | |
52 | return ret; | |
53 | ||
54 | pic->pict_type = AV_PICTURE_TYPE_I; | |
55 | pic->key_frame = 1; | |
56 | dst_line = pic->data[0]; | |
57 | ||
58 | for (h = 0; h < avctx->height; h++) { | |
59 | uint16_t *dst = (uint16_t *)dst_line; | |
60 | for (w = 0; w < avctx->width; w++) { | |
61 | uint32_t pixel; | |
62 | uint16_t r, g, b; | |
63 | if (avctx->codec_id==AV_CODEC_ID_AVRP) { | |
64 | pixel = av_le2ne32(*src++); | |
65 | } else { | |
66 | pixel = av_be2ne32(*src++); | |
67 | } | |
68 | if (avctx->codec_id==AV_CODEC_ID_R210) { | |
69 | b = pixel << 6; | |
70 | g = (pixel >> 4) & 0xffc0; | |
71 | r = (pixel >> 14) & 0xffc0; | |
72 | } else { | |
73 | b = pixel << 4; | |
74 | g = (pixel >> 6) & 0xffc0; | |
75 | r = (pixel >> 16) & 0xffc0; | |
76 | } | |
77 | *dst++ = r | (r >> 10); | |
78 | *dst++ = g | (g >> 10); | |
79 | *dst++ = b | (b >> 10); | |
80 | } | |
81 | src += aligned_width - avctx->width; | |
82 | dst_line += pic->linesize[0]; | |
83 | } | |
84 | ||
85 | *got_frame = 1; | |
86 | ||
87 | return avpkt->size; | |
88 | } | |
89 | ||
90 | #if CONFIG_R210_DECODER | |
91 | AVCodec ff_r210_decoder = { | |
92 | .name = "r210", | |
93 | .long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"), | |
94 | .type = AVMEDIA_TYPE_VIDEO, | |
95 | .id = AV_CODEC_ID_R210, | |
96 | .init = decode_init, | |
97 | .decode = decode_frame, | |
98 | .capabilities = CODEC_CAP_DR1, | |
99 | }; | |
100 | #endif | |
101 | #if CONFIG_R10K_DECODER | |
102 | AVCodec ff_r10k_decoder = { | |
103 | .name = "r10k", | |
104 | .long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"), | |
105 | .type = AVMEDIA_TYPE_VIDEO, | |
106 | .id = AV_CODEC_ID_R10K, | |
107 | .init = decode_init, | |
108 | .decode = decode_frame, | |
109 | .capabilities = CODEC_CAP_DR1, | |
110 | }; | |
111 | #endif | |
112 | #if CONFIG_AVRP_DECODER | |
113 | AVCodec ff_avrp_decoder = { | |
114 | .name = "avrp", | |
115 | .long_name = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"), | |
116 | .type = AVMEDIA_TYPE_VIDEO, | |
117 | .id = AV_CODEC_ID_AVRP, | |
118 | .init = decode_init, | |
119 | .decode = decode_frame, | |
120 | .capabilities = CODEC_CAP_DR1, | |
121 | }; | |
122 | #endif |