2 * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
3 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
5 * This file is part of FFmpeg.
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.
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.
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
22 #include "bytestream.h"
25 #define CLIP(v, depth) av_clip(v, 1<<(depth-8), ((1<<depth)-(1<<(depth-8))-1))
26 #define WRITE_PIXELS(a, b, c, depth) \
28 val = CLIP(*a++, depth) << (10-depth); \
29 val |= (CLIP(*b++, depth) << (20-depth)) | \
30 (CLIP(*c++, depth) << (30-depth)); \
35 static void RENAME(v210_enc)(AVCodecContext *avctx,
36 uint8_t *dst, const AVFrame *pic)
38 V210EncContext *s = avctx->priv_data;
39 int aligned_width = ((avctx->width + 47) / 48) * 48;
40 int stride = aligned_width * 8 / 3;
41 int line_padding = stride - ((avctx->width * 8 + 11) / 12) * 4;
43 const TYPE *y = (const TYPE *)pic->data[0];
44 const TYPE *u = (const TYPE *)pic->data[1];
45 const TYPE *v = (const TYPE *)pic->data[2];
46 const int sample_size = 6 * s->RENAME(sample_factor);
47 const int sample_w = avctx->width / sample_size;
49 for (h = 0; h < avctx->height; h++) {
51 w = sample_w * sample_size;
52 s->RENAME(pack_line)(y, u, v, dst, w);
57 dst += sample_w * 16 * s->RENAME(sample_factor);
59 for (; w < avctx->width - 5; w += 6) {
60 WRITE_PIXELS(u, y, v, DEPTH);
61 WRITE_PIXELS(y, u, y, DEPTH);
62 WRITE_PIXELS(v, y, u, DEPTH);
63 WRITE_PIXELS(y, v, y, DEPTH);
65 if (w < avctx->width - 1) {
66 WRITE_PIXELS(u, y, v, DEPTH);
68 val = CLIP(*y++, DEPTH) << (10-DEPTH);
69 if (w == avctx->width - 2) {
74 if (w < avctx->width - 3) {
75 val |= (CLIP(*u++, DEPTH) << (20-DEPTH)) | (CLIP(*y++, DEPTH) << (30-DEPTH));
79 val = CLIP(*v++, DEPTH) << (10-DEPTH) | (CLIP(*y++, DEPTH) << (20-DEPTH));
84 memset(dst, 0, line_padding);
86 y += pic->linesize[0] / BYTES_PER_PIXEL - avctx->width;
87 u += pic->linesize[1] / BYTES_PER_PIXEL - avctx->width / 2;
88 v += pic->linesize[2] / BYTES_PER_PIXEL - avctx->width / 2;