FFmpeg
v210_template.c
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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 
25 static 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 }
AV_WL32
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
u
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:262
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
w
uint8_t w
Definition: llviddspenc.c:38
internal.h
val
static double val(void *priv, double ch)
Definition: aeval.c:77
width
#define width
s
#define s(width, name)
Definition: cbs_vp9.c:256
V210EncContext
Definition: v210enc.h:26
TYPE
#define TYPE
Definition: ffv1.h:191
WRITE_PIXELS
#define WRITE_PIXELS(a, b, c, depth)
Definition: v210enc_init.h:37
BYTES_PER_PIXEL
#define BYTES_PER_PIXEL
Definition: v210enc.c:44
RENAME
#define RENAME(name)
Definition: ffv1.h:192
DEPTH
#define DEPTH
Definition: v210enc.c:43
stride
#define stride
Definition: h264pred_template.c:537
AVCodecContext
main external API structure.
Definition: avcodec.h:398
CLIP
@ CLIP
Definition: qdrw.c:37
bytestream.h
h
h
Definition: vp9dsp_template.c:2038