1/*
2 * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
3 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
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 "bytestream.h"
23#include "internal.h"
24
25static void RENAME(v210_enc)(AVCodecContext *avctx,
26        uint8_t *dst, const AVFrame *pic)
27{
28    V210EncContext *s = avctx->priv_data;
29    int aligned_width = ((avctx->width + 47) / 48) * 48;
30    int stride = aligned_width * 8 / 3;
31    int line_padding = stride - ((avctx->width * 8 + 11) / 12) * 4;
32    int h, w;
33    const TYPE *y = (const TYPE *)pic->data[0];
34    const TYPE *u = (const TYPE *)pic->data[1];
35    const TYPE *v = (const TYPE *)pic->data[2];
36    const int sample_size = 6 * s->RENAME(sample_factor);
37    const int sample_w    = avctx->width / sample_size;
38
39    for (h = 0; h < avctx->height; h++) {
40        uint32_t val;
41        w = sample_w * sample_size;
42        s->RENAME(pack_line)(y, u, v, dst, w);
43
44        y += w;
45        u += w >> 1;
46        v += w >> 1;
47        dst += sample_w * 16 * s->RENAME(sample_factor);
48
49        for (; w < avctx->width - 5; w += 6) {
50            WRITE_PIXELS(u, y, v, DEPTH);
51            WRITE_PIXELS(y, u, y, DEPTH);
52            WRITE_PIXELS(v, y, u, DEPTH);
53            WRITE_PIXELS(y, v, y, DEPTH);
54        }
55        if (w < avctx->width - 1) {
56            WRITE_PIXELS(u, y, v, DEPTH);
57
58            val = CLIP(*y++, DEPTH) << (10-DEPTH);
59            if (w == avctx->width - 2) {
60                AV_WL32(dst, val);
61                dst += 4;
62            }
63        }
64        if (w < avctx->width - 3) {
65            val |= (CLIP(*u++, DEPTH) << (20-DEPTH)) | (CLIP(*y++, DEPTH) << (30-DEPTH));
66            AV_WL32(dst, val);
67            dst += 4;
68
69            val = CLIP(*v++, DEPTH) << (10-DEPTH) | (CLIP(*y++, DEPTH) << (20-DEPTH));
70            AV_WL32(dst, val);
71            dst += 4;
72        }
73
74        memset(dst, 0, line_padding);
75        dst += line_padding;
76        y += pic->linesize[0] / BYTES_PER_PIXEL - avctx->width;
77        u += pic->linesize[1] / BYTES_PER_PIXEL - avctx->width / 2;
78        v += pic->linesize[2] / BYTES_PER_PIXEL - avctx->width / 2;
79    }
80}
81