aboutsummaryrefslogtreecommitdiff
path: root/engines/lastexpress/data/animation.cpp
blob: 28d30ec7d1aa87b83db7eeb1e0319c97b153c572 (plain)
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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
/* 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.
 *
 */

// Based on Deniz Oezmen's code: http://oezmen.eu/

#include "lastexpress/data/animation.h"

#include "lastexpress/data/sequence.h"
#include "lastexpress/data/snd.h"

#include "lastexpress/debug.h"
#include "lastexpress/helpers.h"

#include "common/events.h"
#include "common/rational.h"
#include "common/rect.h"
#include "common/stream.h"
#include "common/system.h"
#include "common/textconsole.h"

#include "engines/engine.h"

namespace LastExpress {

Animation::Animation() : _stream(NULL), _currentChunk(NULL), _overlay(NULL), _background1(NULL), _background2(NULL), _backgroundCurrent(0), _audio(NULL), _startTime(0), _changed(false), _flag(0) {
}

Animation::~Animation() {
	reset();
}

void Animation::reset() {
	SAFE_DELETE(_overlay);
	SAFE_DELETE(_background1);
	SAFE_DELETE(_background2);
	SAFE_DELETE(_audio);

	_backgroundCurrent = 0;
	_chunks.clear();

	_currentChunk = NULL;

	SAFE_DELETE(_stream);
}

bool Animation::load(Common::SeekableReadStream *stream, int flag) {
	if (!stream)
		return false;

	reset();

	// Keep stream for later decoding of animation
	_stream = stream;

	// Read header to get the number of chunks
	uint32 numChunks = _stream->readUint32LE();
	debugC(3, kLastExpressDebugGraphics, "Number of chunks in NIS file: %d", numChunks);

	// Check if there is enough data
	if (_stream->size() - _stream->pos() < (signed)(numChunks * sizeof(Chunk))) {
		debugC(2, kLastExpressDebugGraphics, "NIS file seems to be corrupted");
		return false;
	}

	// Read all the chunks
	for (uint32 i = 0; i < numChunks; ++i) {
		Chunk chunk;
		chunk.type = (ChunkType)_stream->readUint16LE();
		chunk.frame = _stream->readUint16LE();
		chunk.size = _stream->readUint32LE();

		_chunks.push_back(chunk);

		debugC(9, kLastExpressDebugGraphics, "Chunk Entry: type 0x%.4x, frame=%d, size=%d", chunk.type, chunk.frame, chunk.size);
	}
	_currentChunk = _chunks.begin();
	_changed = false;
	_startTime = g_system->getMillis();

	return true;
}

bool Animation::process() {
	if (!_currentChunk)
		error("[Animation::process] Current chunk iterator is invalid");

	if (_stream == NULL || _chunks.size() == 0)
		error("[Animation::process] Trying to show an animation before loading data");

	// TODO: - subtract the time paused by the GUI
	//       - Re-implement to be closer to the original engine
	//       - Add support for subtitles
	//       - Use engine sound queue instead of our own appendable sound instance
	int32 currentFrame = (g_system->getMillis() - _startTime) * 3 / 100;

	// Process all chunks until the current frame
	while (!_changed && _currentChunk != NULL && currentFrame > _currentChunk->frame && !hasEnded()) {
		switch(_currentChunk->type) {
		//TODO: some info chunks are probably subtitle/sync related
		case kChunkTypeUnknown1:
		case kChunkTypeUnknown2:
		case kChunkTypeUnknown5:
			debugC(9, kLastExpressDebugGraphics | kLastExpressDebugUnknown, "  info chunk: type 0x%.4x (size %d)", _currentChunk->type, _currentChunk->size);
			assert (_currentChunk->frame == 0);
			//TODO: _currentChunk->size?
			break;

		case kChunkTypeAudioInfo:
			debugC(9, kLastExpressDebugGraphics, "  audio info: %d blocks", _currentChunk->size);
			assert (_currentChunk->frame == 0);
			//TODO: save the size?
			_audio = new AppendableSound();
			break;

		case kChunkTypeUnknown4:
			debugC(9, kLastExpressDebugGraphics | kLastExpressDebugUnknown, "  info block 4");
			assert (_currentChunk->frame == 0 && _currentChunk->size == 0);
			//TODO unknown type of chunk
			break;

		case kChunkTypeBackground1:
			debugC(9, kLastExpressDebugGraphics, "  background frame 1 (%d bytes, frame %d)", _currentChunk->size, _currentChunk->frame);
			delete _background1;
			_background1 = processChunkFrame(_stream, *_currentChunk);
			break;

		case kChunkTypeSelectBackground1:
			debugC(9, kLastExpressDebugGraphics, "  select background 1");
			assert (_currentChunk->frame == 0 && _currentChunk->size == 0);
			_backgroundCurrent = 1;
			break;

		case kChunkTypeBackground2:
			debugC(9, kLastExpressDebugGraphics, "  background frame 2 (%d bytes, frame %d)", _currentChunk->size, _currentChunk->frame);
			delete _background2;
			_background2 = processChunkFrame(_stream, *_currentChunk);
			break;

		case kChunkTypeSelectBackground2:
			debugC(9, kLastExpressDebugGraphics, "  select background 2");
			assert (_currentChunk->frame == 0 && _currentChunk->size == 0);
			_backgroundCurrent = 2;
			break;

		case kChunkTypeOverlay:
			debugC(9, kLastExpressDebugGraphics, "  overlay frame (%d bytes, frame %d)", _currentChunk->size, _currentChunk->frame);
			delete _overlay;
			_overlay = processChunkFrame(_stream, *_currentChunk);
			break;

		case kChunkTypeUpdate:
		case kChunkTypeUpdateTransition:
			debugC(9, kLastExpressDebugGraphics, "  update%s: frame %d", _currentChunk->type == 15 ? "" : " with transition", _currentChunk->frame);
			assert (_currentChunk->size == 0);
			_changed = true;
			break;

		case kChunkTypeAudioData:
			debugC(9, kLastExpressDebugGraphics, "  audio (%d blocks, %d bytes, frame %d)", _currentChunk->size / _soundBlockSize, _currentChunk->size, _currentChunk->frame);
			processChunkAudio(_stream, *_currentChunk);

			// Synchronize the audio by resetting the start time
			if (_currentChunk->frame == 0)
				_startTime = g_system->getMillis();
			break;

		case kChunkTypeAudioEnd:
			debugC(9, kLastExpressDebugGraphics, "  audio end: %d blocks", _currentChunk->frame);
			assert (_currentChunk->size == 0);
			_audio->finish();
			//TODO: we need to start the linked sound (.LNK) after the audio from the animation ends
			break;

		default:
			error("[Animation::process] UNKNOWN chunk type=%x frame=%d size=%d", _currentChunk->type, _currentChunk->frame, _currentChunk->size);
			break;
		}
		_currentChunk++;
	}

	return true;
}

bool Animation::hasEnded() {
	return _currentChunk == _chunks.end();
}

Common::Rect Animation::draw(Graphics::Surface *surface) {
	if (!_overlay)
		error("[Animation::draw] Current overlay animation frame is invalid");

	// Paint the background
	if (_backgroundCurrent == 1 && _background1)
		_background1->draw(surface);
	else if (_backgroundCurrent == 2 && _background2)
		_background2->draw(surface);

	// Paint the overlay
	_overlay->draw(surface);

	//TODO
	return Common::Rect();
}

AnimFrame *Animation::processChunkFrame(Common::SeekableReadStream *in, const Chunk &c) const {
	assert (c.frame == 0);

	// Create a temporary chunk buffer
	Common::SeekableReadStream *str = in->readStream(c.size);

	// Read the frame information
	FrameInfo i;
	i.read(str, false);

	// Decode the frame
	AnimFrame *f = new AnimFrame(str, i);

	// Delete the temporary chunk buffer
	delete str;

	return f;
}

void Animation::processChunkAudio(Common::SeekableReadStream *in, const Chunk &c) {
	if (!_audio)
		error("[Animation::processChunkAudio] Audio stream is invalid");

	// Skip the Snd header, to queue just the audio blocks
	uint32 size = c.size;
	if ((c.size % 739) != 0) {
		// Read Snd header
		uint32 header1 = in->readUint32LE();
		uint16 header2 = in->readUint16LE();
		warning("Start ADPCM: %d, %d", header1, header2);
		size -= 6;
	}

	// Append the current chunk to the Snd
	_audio->queueBuffer(in->readStream(size));
}

// TODO: this method will probably go away and be integrated in the main loop
void Animation::play() {
	Common::EventManager *eventMan = g_system->getEventManager();
	while (!hasEnded() && !Engine::shouldQuit()) {
		process();

		if (_changed) {
			// Create a temporary surface to merge the overlay with the background
			Graphics::Surface *s = new Graphics::Surface;
			s->create(640, 480, Graphics::PixelFormat(2, 5, 5, 5, 0, 10, 5, 0, 0));

			draw(s);

			// XXX: Update the screen
			g_system->copyRectToScreen((byte *)s->pixels, s->pitch, 0, 0, s->w, s->h);

			// Free the temporary surface
			s->free();
			delete s;

			_changed = false;
		}

		g_system->updateScreen();

		//FIXME: implement subtitles
		g_system->delayMillis(20);

		// Handle right-click to interrupt animations
		Common::Event ev = Common::Event();
		while (eventMan->pollEvent(ev)) {
			if (ev.type == Common::EVENT_RBUTTONUP) {
				// Stop audio
				if (_audio)
					_audio->finish();

				// TODO start LNK file sound?
				return;
			}
		}
	}
}

} // End of namespace LastExpress