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ca0bb1c4 BC |
1 | /* |
2 | * V210 encoder | |
3 | * | |
4 | * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at> | |
5 | * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com> | |
6 | * | |
2912e87a | 7 | * This file is part of Libav. |
ca0bb1c4 | 8 | * |
2912e87a | 9 | * Libav is free software; you can redistribute it and/or |
ca0bb1c4 BC |
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 | * | |
2912e87a | 14 | * Libav is distributed in the hope that it will be useful, |
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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 | |
2912e87a | 20 | * License along with Libav; if not, write to the Free Software |
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21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
22 | */ | |
23 | ||
24 | #include "avcodec.h" | |
dc25d79f | 25 | #include "bytestream.h" |
ca0bb1c4 BC |
26 | |
27 | static av_cold int encode_init(AVCodecContext *avctx) | |
28 | { | |
29 | if (avctx->width & 1) { | |
30 | av_log(avctx, AV_LOG_ERROR, "v210 needs even width\n"); | |
b5f50da5 | 31 | return AVERROR(EINVAL); |
ca0bb1c4 BC |
32 | } |
33 | ||
d239b83e BC |
34 | if (avctx->pix_fmt != PIX_FMT_YUV422P10) { |
35 | av_log(avctx, AV_LOG_ERROR, "v210 needs YUV422P10\n"); | |
ca0bb1c4 BC |
36 | return -1; |
37 | } | |
38 | ||
39 | if (avctx->bits_per_raw_sample != 10) | |
40 | av_log(avctx, AV_LOG_WARNING, "bits per raw sample: %d != 10-bit\n", | |
41 | avctx->bits_per_raw_sample); | |
42 | ||
43 | avctx->coded_frame = avcodec_alloc_frame(); | |
d73466f8 PM |
44 | if (!avctx->coded_frame) |
45 | return AVERROR(ENOMEM); | |
ca0bb1c4 | 46 | |
975a1447 | 47 | avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
ca0bb1c4 BC |
48 | |
49 | return 0; | |
50 | } | |
51 | ||
d87d5025 DB |
52 | static int encode_frame(AVCodecContext *avctx, unsigned char *buf, |
53 | int buf_size, void *data) | |
ca0bb1c4 BC |
54 | { |
55 | const AVFrame *pic = data; | |
56 | int aligned_width = ((avctx->width + 47) / 48) * 48; | |
57 | int stride = aligned_width * 8 / 3; | |
58 | int h, w; | |
520ca503 BC |
59 | const uint16_t *y = (const uint16_t*)pic->data[0]; |
60 | const uint16_t *u = (const uint16_t*)pic->data[1]; | |
61 | const uint16_t *v = (const uint16_t*)pic->data[2]; | |
ca0bb1c4 BC |
62 | uint8_t *p = buf; |
63 | uint8_t *pdst = buf; | |
64 | ||
65 | if (buf_size < aligned_width * avctx->height * 8 / 3) { | |
66 | av_log(avctx, AV_LOG_ERROR, "output buffer too small\n"); | |
b5f50da5 | 67 | return AVERROR(ENOMEM); |
ca0bb1c4 BC |
68 | } |
69 | ||
635bbecf BC |
70 | #define CLIP(v) av_clip(v, 4, 1019) |
71 | ||
ca0bb1c4 BC |
72 | #define WRITE_PIXELS(a, b, c) \ |
73 | do { \ | |
635bbecf BC |
74 | val = CLIP(*a++); \ |
75 | val |= (CLIP(*b++) << 10) | \ | |
76 | (CLIP(*c++) << 20); \ | |
ca0bb1c4 | 77 | bytestream_put_le32(&p, val); \ |
e20b196d | 78 | } while (0) |
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79 | |
80 | for (h = 0; h < avctx->height; h++) { | |
81 | uint32_t val; | |
82 | for (w = 0; w < avctx->width - 5; w += 6) { | |
83 | WRITE_PIXELS(u, y, v); | |
84 | WRITE_PIXELS(y, u, y); | |
85 | WRITE_PIXELS(v, y, u); | |
86 | WRITE_PIXELS(y, v, y); | |
87 | } | |
88 | if (w < avctx->width - 1) { | |
89 | WRITE_PIXELS(u, y, v); | |
90 | ||
635bbecf | 91 | val = CLIP(*y++); |
ca0bb1c4 BC |
92 | if (w == avctx->width - 2) |
93 | bytestream_put_le32(&p, val); | |
94 | } | |
95 | if (w < avctx->width - 3) { | |
635bbecf | 96 | val |= (CLIP(*u++) << 10) | (CLIP(*y++) << 20); |
ca0bb1c4 BC |
97 | bytestream_put_le32(&p, val); |
98 | ||
635bbecf | 99 | val = CLIP(*v++) | (CLIP(*y++) << 10); |
ca0bb1c4 BC |
100 | bytestream_put_le32(&p, val); |
101 | } | |
102 | ||
103 | pdst += stride; | |
104 | memset(p, 0, pdst - p); | |
105 | p = pdst; | |
d87d5025 DB |
106 | y += pic->linesize[0] / 2 - avctx->width; |
107 | u += pic->linesize[1] / 2 - avctx->width / 2; | |
108 | v += pic->linesize[2] / 2 - avctx->width / 2; | |
ca0bb1c4 BC |
109 | } |
110 | ||
111 | return p - buf; | |
112 | } | |
113 | ||
114 | static av_cold int encode_close(AVCodecContext *avctx) | |
115 | { | |
116 | av_freep(&avctx->coded_frame); | |
117 | ||
118 | return 0; | |
119 | } | |
120 | ||
d36beb3f | 121 | AVCodec ff_v210_encoder = { |
ec6402b7 AK |
122 | .name = "v210", |
123 | .type = AVMEDIA_TYPE_VIDEO, | |
124 | .id = CODEC_ID_V210, | |
125 | .init = encode_init, | |
126 | .encode = encode_frame, | |
127 | .close = encode_close, | |
d239b83e | 128 | .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV422P10, PIX_FMT_NONE}, |
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129 | .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"), |
130 | }; |