CHEWY: Initial work on game videos

scummvm · Oct 2, 2016 · f017940 · f017940
1 parent b60f502
commit f017940
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Showing 4 changed files with 74 additions and 1 deletion.
diff --git a/engines/chewy/console.cpp b/engines/chewy/console.cpp
@@ -37,6 +37,8 @@ Console::Console(ChewyEngine *vm) : GUI::Debugger(), _vm(vm) {
 	registerCmd("play_sound",	WRAP_METHOD(Console, Cmd_PlaySound));
 	registerCmd("play_speech",	WRAP_METHOD(Console, Cmd_PlaySpeech));
 	registerCmd("play_music",	WRAP_METHOD(Console, Cmd_PlayMusic));
+	registerCmd("play_video",	WRAP_METHOD(Console, Cmd_PlayVideo));
+	registerCmd("video_info",	WRAP_METHOD(Console, Cmd_VideoInfo));
 	registerCmd("text",			WRAP_METHOD(Console, Cmd_Text));
 }
 
@@ -149,6 +151,35 @@ bool Console::Cmd_PlayMusic(int argc, const char **argv) {
 	return true;
 }
 
+bool Console::Cmd_PlayVideo(int argc, const char **argv) {
+	if (argc < 2) {
+		debugPrintf("Usage: play_video <number>\n");
+		return true;
+	}
+
+	int resNum = atoi(argv[1]);
+	debugPrintf("TODO: Play video %d", resNum);
+	// TODO
+
+	return true;
+}
+
+bool Console::Cmd_VideoInfo(int argc, const char **argv) {
+	if (argc < 2) {
+		debugPrintf("Usage: video_info <number>\n");
+		return true;
+	}
+
+	int resNum = atoi(argv[1]);
+	VideoResource *res = new VideoResource("cut.tap");
+	VideoChunk *header = res->getVideoHeader(resNum);
+	debugPrintf("Size: %d, %d x %d, %d frames, %d ms frame delay, first frame at %d\n", header->size, header->width, header->height, header->frameCount, header->frameDelay, header->firstFrameOffset);
+	delete header;
+	delete res;
+
+	return true;
+}
+
 bool Console::Cmd_Text(int argc, const char **argv) {
 	if (argc < 2) {
 		debugPrintf("Usage: <file> <text number>\n");

diff --git a/engines/chewy/console.h b/engines/chewy/console.h
@@ -43,6 +43,8 @@ class Console : public GUI::Debugger {
 	bool Cmd_PlaySound(int argc, const char **argv);
 	bool Cmd_PlaySpeech(int argc, const char **argv);
 	bool Cmd_PlayMusic(int argc, const char **argv);
+	bool Cmd_PlayVideo(int argc, const char **argv);
+	bool Cmd_VideoInfo(int argc, const char **argv);
 	bool Cmd_Text(int argc, const char **argv);
 };
 

diff --git a/engines/chewy/resource.cpp b/engines/chewy/resource.cpp
@@ -226,4 +226,25 @@ Common::String TextResource::getText(uint num) {
 	return str;
 }
 
+VideoChunk *VideoResource::getVideoHeader(uint num) {
+	assert(num < _chunkList.size());
+
+	Chunk *chunk = &_chunkList[num];
+	VideoChunk *vid = new VideoChunk();
+
+	_stream.seek(chunk->pos, SEEK_SET);
+
+	if (_stream.readUint32BE() != MKTAG('C', 'F', 'O', '\0'))
+		error("Corrupt video resource");
+
+	vid->size = _stream.readUint32LE();	// always 0
+	vid->frameCount = _stream.readUint16LE();
+	vid->width = _stream.readUint16LE();
+	vid->height = _stream.readUint16LE();
+	vid->frameDelay = _stream.readUint32LE();
+	vid->firstFrameOffset = _stream.readUint32LE();	// always 22
+
+	return vid;
+}
+
 } // End of namespace Chewy
diff --git a/engines/chewy/resource.h b/engines/chewy/resource.h
@@ -94,6 +94,17 @@ struct SoundChunk {
 	byte *data;
 };
 
+// Video chunk header
+struct VideoChunk {
+	// ID (CFA, followed by a zero)
+	uint32 size;
+	uint16 frameCount;
+	uint16 width;
+	uint16 height;
+	uint32 frameDelay;	// in ms
+	uint32 firstFrameOffset;
+};
+
 typedef Common::Array<Chunk> ChunkList;
 typedef Common::Array<TBFChunk> TBFChunkList;
 
@@ -111,7 +122,7 @@ class Resource {
 	Common::File _stream;
 	uint16 _chunkCount;
 	ResourceType _resType;
-	byte _encrypted;
+	bool _encrypted;
 
 	ChunkList _chunkList;
 };
@@ -140,6 +151,14 @@ class TextResource : public Resource {
 	Common::String getText(uint num);
 };
 
+class VideoResource : public Resource {
+public:
+	VideoResource(Common::String filename) : Resource(filename) {}
+	~VideoResource() {}
+
+	VideoChunk *getVideoHeader(uint num);
+};
+
 } // End of namespace Chewy
 
 #endif