Commit | Line | Data |
---|---|---|
ca0bb1c4 BC |
1 | /* |
2 | * V210 decoder | |
3 | * | |
4 | * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at> | |
5 | * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com> | |
6 | * | |
7 | * This file is part of FFmpeg. | |
8 | * | |
9 | * FFmpeg is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU Lesser General Public | |
11 | * License as published by the Free Software Foundation; either | |
12 | * version 2.1 of the License, or (at your option) any later version. | |
13 | * | |
14 | * FFmpeg is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public | |
20 | * License along with FFmpeg; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
22 | */ | |
23 | ||
24 | #include "avcodec.h" | |
25 | #include "libavutil/bswap.h" | |
26 | ||
27 | static av_cold int decode_init(AVCodecContext *avctx) | |
28 | { | |
29 | if (avctx->width & 1) { | |
30 | av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n"); | |
31 | return -1; | |
32 | } | |
d87d5025 | 33 | avctx->pix_fmt = PIX_FMT_YUV422P16; |
ca0bb1c4 BC |
34 | avctx->bits_per_raw_sample = 10; |
35 | ||
d87d5025 | 36 | avctx->coded_frame = avcodec_alloc_frame(); |
ca0bb1c4 BC |
37 | |
38 | return 0; | |
39 | } | |
40 | ||
d87d5025 DB |
41 | static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, |
42 | AVPacket *avpkt) | |
ca0bb1c4 BC |
43 | { |
44 | int h, w; | |
45 | AVFrame *pic = avctx->coded_frame; | |
46 | const uint8_t *psrc = avpkt->data; | |
47 | uint16_t *y, *u, *v; | |
48 | int aligned_width = ((avctx->width + 47) / 48) * 48; | |
49 | int stride = aligned_width * 8 / 3; | |
50 | ||
51 | if (pic->data[0]) | |
52 | avctx->release_buffer(avctx, pic); | |
53 | ||
54 | if (avpkt->size < stride * avctx->height) { | |
55 | av_log(avctx, AV_LOG_ERROR, "packet too small\n"); | |
56 | return -1; | |
57 | } | |
58 | ||
59 | pic->reference = 0; | |
60 | if (avctx->get_buffer(avctx, pic) < 0) | |
61 | return -1; | |
62 | ||
03e4f1ed BC |
63 | y = (uint16_t*)pic->data[0]; |
64 | u = (uint16_t*)pic->data[1]; | |
65 | v = (uint16_t*)pic->data[2]; | |
ca0bb1c4 BC |
66 | pic->pict_type = FF_I_TYPE; |
67 | pic->key_frame = 1; | |
68 | ||
d87d5025 DB |
69 | #define READ_PIXELS(a, b, c) \ |
70 | do { \ | |
8fc0162a | 71 | val = av_le2ne32(*src++); \ |
ca0bb1c4 BC |
72 | *a++ = val << 6; \ |
73 | *b++ = (val >> 4) & 0xFFC0; \ | |
74 | *c++ = (val >> 14) & 0xFFC0; \ | |
e20b196d | 75 | } while (0) |
ca0bb1c4 BC |
76 | |
77 | for (h = 0; h < avctx->height; h++) { | |
03e4f1ed | 78 | const uint32_t *src = (const uint32_t*)psrc; |
ca0bb1c4 BC |
79 | uint32_t val; |
80 | for (w = 0; w < avctx->width - 5; w += 6) { | |
81 | READ_PIXELS(u, y, v); | |
82 | READ_PIXELS(y, u, y); | |
83 | READ_PIXELS(v, y, u); | |
84 | READ_PIXELS(y, v, y); | |
85 | } | |
86 | if (w < avctx->width - 1) { | |
87 | READ_PIXELS(u, y, v); | |
88 | ||
8fc0162a | 89 | val = av_le2ne32(*src++); |
ca0bb1c4 BC |
90 | *y++ = val << 6; |
91 | } | |
92 | if (w < avctx->width - 3) { | |
93 | *u++ = (val >> 4) & 0xFFC0; | |
94 | *y++ = (val >> 14) & 0xFFC0; | |
95 | ||
8fc0162a | 96 | val = av_le2ne32(*src++); |
ca0bb1c4 BC |
97 | *v++ = val << 6; |
98 | *y++ = (val >> 4) & 0xFFC0; | |
99 | } | |
100 | ||
101 | psrc += stride; | |
d87d5025 DB |
102 | y += pic->linesize[0] / 2 - avctx->width; |
103 | u += pic->linesize[1] / 2 - avctx->width / 2; | |
104 | v += pic->linesize[2] / 2 - avctx->width / 2; | |
ca0bb1c4 BC |
105 | } |
106 | ||
107 | *data_size = sizeof(AVFrame); | |
108 | *(AVFrame*)data = *avctx->coded_frame; | |
109 | ||
110 | return avpkt->size; | |
111 | } | |
112 | ||
113 | static av_cold int decode_close(AVCodecContext *avctx) | |
114 | { | |
0fbb0185 RD |
115 | AVFrame *pic = avctx->coded_frame; |
116 | if (pic->data[0]) | |
117 | avctx->release_buffer(avctx, pic); | |
ca0bb1c4 BC |
118 | av_freep(&avctx->coded_frame); |
119 | ||
120 | return 0; | |
121 | } | |
122 | ||
d36beb3f | 123 | AVCodec ff_v210_decoder = { |
ca0bb1c4 | 124 | "v210", |
72415b2a | 125 | AVMEDIA_TYPE_VIDEO, |
ca0bb1c4 BC |
126 | CODEC_ID_V210, |
127 | 0, | |
128 | decode_init, | |
129 | NULL, | |
130 | decode_close, | |
131 | decode_frame, | |
132 | CODEC_CAP_DR1, | |
133 | .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"), | |
134 | }; |