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
160
161
162
163
164
165
166
167
168
169
170
171
|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "common/scummsys.h"
#include "zvision/zvision.h"
#include "zvision/clock.h"
#include "zvision/render_manager.h"
#include "common/system.h"
#include "video/video_decoder.h"
#include "engines/util.h"
#include "graphics/surface.h"
namespace ZVision {
// Taken/modified from SCI
void scaleBuffer(const byte *src, byte *dst, uint32 srcWidth, uint32 srcHeight, byte bytesPerPixel, uint scaleAmount) {
assert(bytesPerPixel == 1 || bytesPerPixel == 2);
const uint32 newWidth = srcWidth * scaleAmount;
const uint32 pitch = newWidth * bytesPerPixel;
const byte *srcPtr = src;
if (bytesPerPixel == 1) {
for (uint32 y = 0; y < srcHeight; ++y) {
for (uint32 x = 0; x < srcWidth; ++x) {
const byte color = *srcPtr++;
for (uint i = 0; i < scaleAmount; ++i) {
dst[i] = color;
dst[pitch + i] = color;
}
dst += scaleAmount;
}
dst += pitch;
}
} else if (bytesPerPixel == 2) {
for (uint32 y = 0; y < srcHeight; ++y) {
for (uint32 x = 0; x < srcWidth; ++x) {
const byte color = *srcPtr++;
const byte color2 = *srcPtr++;
for (uint i = 0; i < scaleAmount; ++i) {
uint index = i *2;
dst[index] = color;
dst[index + 1] = color2;
dst[pitch + index] = color;
dst[pitch + index + 1] = color2;
}
dst += 2 * scaleAmount;
}
dst += pitch;
}
}
}
void ZVision::playVideo(Video::VideoDecoder &videoDecoder, const Common::Rect &destRect, bool skippable) {
byte bytesPerPixel = videoDecoder.getPixelFormat().bytesPerPixel;
uint16 origWidth = videoDecoder.getWidth();
uint16 origHeight = videoDecoder.getHeight();
uint scale = 1;
// If destRect is empty, no specific scaling was requested. However, we may choose to do scaling anyway
if (destRect.isEmpty()) {
// Most videos are very small. Therefore we do a simple 2x scale
if (origWidth * 2 <= 640 && origHeight * 2 <= 480) {
scale = 2;
}
} else {
// Assume bilinear scaling. AKA calculate the scale from just the width.
// Also assume that the scaling is in integral intervals. AKA no 1.5x scaling
// TODO: Test ^these^ assumptions
scale = destRect.width() / origWidth;
// TODO: Test if we need to support downscale.
}
uint16 pitch = origWidth * bytesPerPixel;
uint16 finalWidth = origWidth * scale;
uint16 finalHeight = origHeight * scale;
byte *scaledVideoFrameBuffer;
if (scale != 1) {
scaledVideoFrameBuffer = new byte[finalWidth * finalHeight * bytesPerPixel];
}
uint16 x = ((WINDOW_WIDTH - finalWidth) / 2) + destRect.left;
uint16 y = ((WINDOW_HEIGHT - finalHeight) / 2) + destRect.top;
_clock.stop();
videoDecoder.start();
// Only continue while the video is still playing
while (!shouldQuit() && !videoDecoder.endOfVideo() && videoDecoder.isPlaying()) {
// Check for engine quit and video stop key presses
while (!videoDecoder.endOfVideo() && videoDecoder.isPlaying() && _eventMan->pollEvent(_event)) {
switch (_event.type) {
case Common::EVENT_KEYDOWN:
switch (_event.kbd.keycode) {
case Common::KEYCODE_q:
if (_event.kbd.hasFlags(Common::KBD_CTRL))
quitGame();
break;
case Common::KEYCODE_SPACE:
if (skippable) {
videoDecoder.stop();
}
break;
default:
break;
}
default:
break;
}
}
if (videoDecoder.needsUpdate()) {
const Graphics::Surface *frame = videoDecoder.decodeNextFrame();
if (frame) {
if (scale != 1) {
scaleBuffer((const byte *)frame->getPixels(), scaledVideoFrameBuffer, origWidth, origHeight, bytesPerPixel, scale);
_system->copyRectToScreen(scaledVideoFrameBuffer, pitch * 2, x, y, finalWidth, finalHeight);
} else {
_system->copyRectToScreen((const byte *)frame->getPixels(), pitch, x, y, finalWidth, finalHeight);
}
}
}
// Always update the screen so the mouse continues to render
_system->updateScreen();
_system->delayMillis(videoDecoder.getTimeToNextFrame());
}
_clock.start();
if (scale != 1) {
delete[] scaledVideoFrameBuffer;
}
}
} // End of namespace ZVision
|
