1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/************************************************************************************
This source file is part of the Theora Video Playback Library
For latest info, see http://libtheoraplayer.googlecode.com
*************************************************************************************
Copyright (c) 2008-2014 Kresimir Spes (kspes@cateia.com)
This program is free software; you can redistribute it and/or modify it under
the terms of the BSD license: http://opensource.org/licenses/BSD-3-Clause
*************************************************************************************/
#include <memory.h>
#include "TheoraPixelTransform.h"
#include "TheoraVideoClip.h"
#include "TheoraVideoFrame.h"
#include "TheoraVideoManager.h"
//#define YUV_TEST // uncomment this if you want to benchmark YUV decoding functions
extern "C"
{
void decodeRGB (struct TheoraPixelTransform* t);
void decodeRGBA (struct TheoraPixelTransform* t);
void decodeRGBX (struct TheoraPixelTransform* t);
void decodeARGB (struct TheoraPixelTransform* t);
void decodeXRGB (struct TheoraPixelTransform* t);
void decodeBGR (struct TheoraPixelTransform* t);
void decodeBGRA (struct TheoraPixelTransform* t);
void decodeBGRX (struct TheoraPixelTransform* t);
void decodeABGR (struct TheoraPixelTransform* t);
void decodeXBGR (struct TheoraPixelTransform* t);
void decodeGrey (struct TheoraPixelTransform* t);
void decodeGrey3(struct TheoraPixelTransform* t);
void decodeGreyA(struct TheoraPixelTransform* t);
void decodeGreyX(struct TheoraPixelTransform* t);
void decodeAGrey(struct TheoraPixelTransform* t);
void decodeXGrey(struct TheoraPixelTransform* t);
void decodeYUV (struct TheoraPixelTransform* t);
void decodeYUVA (struct TheoraPixelTransform* t);
void decodeYUVX (struct TheoraPixelTransform* t);
void decodeAYUV (struct TheoraPixelTransform* t);
void decodeXYUV (struct TheoraPixelTransform* t);
}
static void (*conversion_functions[])(struct TheoraPixelTransform*) = {0,
decodeRGB,
decodeRGBA,
decodeRGBX,
decodeARGB,
decodeXRGB,
decodeBGR,
decodeBGRA,
decodeBGRX,
decodeABGR,
decodeXBGR,
decodeGrey,
decodeGrey3,
decodeGreyA,
decodeGreyX,
decodeAGrey,
decodeXGrey,
decodeYUV,
decodeYUVA,
decodeYUVX,
decodeAYUV,
decodeXYUV
};
TheoraVideoFrame::TheoraVideoFrame(TheoraVideoClip* parent)
{
mReady = mInUse = false;
mParent = parent;
mIteration = 0;
// number of bytes based on output mode
int bytemap[]={0, 3, 4, 4, 4, 4, 3, 4, 4, 4, 4, 1, 3, 4, 4, 4, 4, 3, 4, 4, 4, 4};
mBpp = bytemap[mParent->getOutputMode()];
unsigned int size = mParent->getStride() * mParent->mHeight * mBpp;
try
{
mBuffer = new unsigned char[size];
}
catch (std::bad_alloc)
{
mBuffer = NULL;
return;
}
memset(mBuffer, 255, size);
}
TheoraVideoFrame::~TheoraVideoFrame()
{
if (mBuffer) delete [] mBuffer;
}
int TheoraVideoFrame::getWidth()
{
return mParent->getWidth();
}
int TheoraVideoFrame::getStride()
{
return mParent->mStride;
}
int TheoraVideoFrame::getHeight()
{
return mParent->getHeight();
}
unsigned char* TheoraVideoFrame::getBuffer()
{
return mBuffer;
}
void TheoraVideoFrame::decode(struct TheoraPixelTransform* t)
{
if (t->raw != NULL)
{
int bufferStride = mParent->getWidth() * mBpp;
if (bufferStride == t->rawStride)
{
memcpy(mBuffer, t->raw, t->rawStride * mParent->getHeight());
}
else
{
unsigned char *buff = mBuffer, *src = t->raw;
int i, h = mParent->getHeight();
for (i = 0; i < h; ++i, buff += bufferStride, src += t->rawStride)
{
memcpy(buff, src, bufferStride);
}
}
}
else
{
t->out = mBuffer;
t->w = mParent->getWidth();
t->h = mParent->getHeight();
#ifdef YUV_TEST // when benchmarking yuv conversion functions during development, do a timed average
#define N 1000
clock_t time = clock();
for (int i = 0; i < N; ++i)
{
conversion_functions[mParent->getOutputMode()](t);
}
float diff = (clock() - time) * 1000.0f / CLOCKS_PER_SEC;
char s[128];
sprintf(s, "%.2f", diff / N);
TheoraVideoManager::getSingleton().logMessage("YUV Decoding time: " + std::string(s) + " ms\n");
#else
conversion_functions[mParent->getOutputMode()](t);
#endif
}
mReady = true;
}
void TheoraVideoFrame::clear()
{
mInUse = mReady = false;
}
|