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|
/* 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.
*
* $URL$
* $Id$
*
*/
// ROQ video player based on this specification by Dr. Tim Ferguson:
// http://www.csse.monash.edu.au/~timf/videocodec/idroq.txt
#include "groovie/groovie.h"
#include "groovie/roq.h"
#include "graphics/jpeg.h"
#ifdef ENABLE_RGB_COLOR
// Required for the YUV to RGB conversion
#include "graphics/conversion.h"
#endif
#include "sound/mixer.h"
namespace Groovie {
ROQPlayer::ROQPlayer(GroovieEngine *vm) :
#ifdef DITHER
_dither(NULL),
#endif
VideoPlayer(vm), _codingTypeCount(0) {
// Create the work surfaces
_currBuf = new Graphics::Surface();
_prevBuf = new Graphics::Surface();
if (_vm->_mode8bit) {
byte pal[256 * 4];
#ifdef DITHER
byte pal3[256 * 3];
// Initialize to a black palette
for (int i = 0; i < 256 * 3; i++) {
pal3[i] = 0;
}
// Build a basic color palette
for (int r = 0; r < 4; r++) {
for (int g = 0; g < 4; g++) {
for (int b = 0; b < 4; b++) {
byte col = (r << 4) | (g << 2) | (b << 0);
pal3[3 * col + 0] = r << 6;
pal3[3 * col + 1] = g << 6;
pal3[3 * col + 2] = b << 6;
}
}
}
// Initialize the dithering algorithm
_paletteLookup = new Graphics::PaletteLUT(8, Graphics::PaletteLUT::kPaletteYUV);
_paletteLookup->setPalette(pal3, Graphics::PaletteLUT::kPaletteRGB, 8);
for (int i = 0; (i < 64) && !_vm->shouldQuit(); i++) {
debug("Groovie::ROQ: Building palette table: %02d/63", i);
_paletteLookup->buildNext();
}
// Prepare the palette to show
for (int i = 0; i < 256; i++) {
pal[(i * 4) + 0] = pal3[(i * 3) + 0];
pal[(i * 4) + 1] = pal3[(i * 3) + 1];
pal[(i * 4) + 2] = pal3[(i * 3) + 2];
}
#else // !DITHER
// Set a grayscale palette
for (int i = 0; i < 256; i++) {
pal[(i * 4) + 0] = i;
pal[(i * 4) + 1] = i;
pal[(i * 4) + 2] = i;
}
#endif // DITHER
_syst->setPalette(pal, 0, 256);
}
}
ROQPlayer::~ROQPlayer() {
// Free the buffers
_currBuf->free();
delete _currBuf;
_prevBuf->free();
delete _prevBuf;
_showBuf.free();
#ifdef DITHER
// Free the dithering algorithm
delete _dither;
delete _paletteLookup;
#endif
}
uint16 ROQPlayer::loadInternal() {
// Begin reading the file
debugC(1, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Loading video");
// Read the file header
ROQBlockHeader blockHeader;
if (!readBlockHeader(blockHeader)) {
return 0;
}
// Verify the file signature
if (blockHeader.type != 0x1084) {
return 0;
}
// Clear the dirty flag
_dirty = true;
// Reset the codebooks
_num2blocks = 0;
_num4blocks = 0;
if ((blockHeader.size == 0) && (blockHeader.param == 0)) {
// Set the offset scaling to 2
_offScale = 2;
// Hardcoded FPS
return 30;
} else if (blockHeader.size == (uint32)-1) {
// Set the offset scaling to 1
_offScale = 1;
// In this case the block parameter is the framerate
return blockHeader.param;
} else {
warning("Groovie::ROQ: Invalid header with size=%d and param=%d", blockHeader.size, blockHeader.param);
return 0;
}
}
void ROQPlayer::buildShowBuf() {
#ifdef DITHER
// Start a new frame dithering
_dither->newFrame();
#endif
for (int line = 0; line < _showBuf.h; line++) {
byte *out = (byte *)_showBuf.getBasePtr(0, line);
byte *in = (byte *)_prevBuf->getBasePtr(0, line / _scaleY);
for (int x = 0; x < _showBuf.w; x++) {
if (_vm->_mode8bit) {
#ifdef DITHER
*out = _dither->dither(*in, *(in + 1), *(in + 2), x);
#else
// Just use the luminancy component
*out = *in;
#endif // DITHER
#ifdef ENABLE_RGB_COLOR
} else {
// Do the format conversion (YUV -> RGB -> Screen format)
byte r, g, b;
Graphics::YUV2RGB(*in, *(in + 1), *(in + 2), r, g, b);
// FIXME: this is fixed to 16bit
*(uint16 *)out = (uint16)_vm->_pixelFormat.RGBToColor(r, g, b);
#endif // ENABLE_RGB_COLOR
}
// Skip to the next pixel
out += _vm->_pixelFormat.bytesPerPixel;
if (!(x % _scaleX))
in += _prevBuf->bytesPerPixel;
}
#ifdef DITHER
_dither->nextLine();
#endif
}
}
bool ROQPlayer::playFrameInternal() {
debugC(5, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Playing frame");
// Process the needed blocks until the next video frame
bool endframe = false;
while (!endframe && !_file->eos()) {
endframe = processBlock();
}
if (_dirty) {
// Build the show buffer from the previous (back) buffer
buildShowBuf();
}
// Wait until the current frame can be shown
waitFrame();
if (_dirty) {
// Update the screen
_syst->copyRectToScreen((byte *)_showBuf.getBasePtr(0, 0), _showBuf.pitch, 0, (_syst->getHeight() - _showBuf.h) / 2, _showBuf.w, _showBuf.h);
_syst->updateScreen();
// Clear the dirty flag
_dirty = false;
}
// Return whether the video has ended
return _file->eos();
}
bool ROQPlayer::readBlockHeader(ROQBlockHeader &blockHeader) {
if (_file->eos()) {
return false;
} else {
blockHeader.type = _file->readUint16LE();
blockHeader.size = _file->readUint32LE();
blockHeader.param = _file->readUint16LE();
debugC(10, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Block type = 0x%02X", blockHeader.type);
debugC(10, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Block size = 0x%08X", blockHeader.size);
debugC(10, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Block param = 0x%04X", blockHeader.param);
return true;
}
}
bool ROQPlayer::processBlock() {
// Read the header of the block
ROQBlockHeader blockHeader;
if (!readBlockHeader(blockHeader)) {
return true;
}
// Calculate where the block should end
int32 endpos = _file->pos() + blockHeader.size;
// Detect the end of the video
if (_file->eos()) {
return false;
}
bool ok = true;
bool endframe = false;
switch (blockHeader.type) {
case 0x1001: // Video info
ok = processBlockInfo(blockHeader);
break;
case 0x1002: // Quad codebook definition
ok = processBlockQuadCodebook(blockHeader);
break;
case 0x1011: { // Quad vector quantised video frame
ok = processBlockQuadVector(blockHeader);
_dirty = true;
endframe = true;
// Swap buffers
Graphics::Surface *tmp = _prevBuf;
_prevBuf = _currBuf;
_currBuf = tmp;
break;
}
case 0x1012: // Still image (JPEG)
ok = processBlockStill(blockHeader);
break;
case 0x1013: // Hang
assert(blockHeader.size == 0 && blockHeader.param == 0);
break;
case 0x1020: // Mono sound samples
ok = processBlockSoundMono(blockHeader);
break;
case 0x1021: // Stereo sound samples
ok = processBlockSoundStereo(blockHeader);
break;
case 0x1030: // Audio container
endpos = _file->pos();
ok = processBlockAudioContainer(blockHeader);
break;
default:
warning("Groovie::ROQ: Unknown block type: 0x%04X", blockHeader.type);
ok = false;
_file->skip(blockHeader.size);
}
if (endpos != _file->pos())
warning("Groovie::ROQ: BLOCK %04x Should have ended at %d, and has ended at %d", blockHeader.type, endpos, _file->pos());
// End the frame when the graphics have been modified or when there's an error
return endframe || !ok;
}
bool ROQPlayer::processBlockInfo(ROQBlockHeader &blockHeader) {
debugC(5, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Processing info block");
// Verify the block header
if (blockHeader.type != 0x1001 || blockHeader.size != 8 || (blockHeader.param != 0 && blockHeader.param != 1)) {
warning("Groovie::ROQ: BlockInfo size=%d param=%d", blockHeader.size, blockHeader.param);
return false;
}
// Save the alpha channel size
_alpha = blockHeader.param;
// Read the information
uint16 width = _file->readUint16LE();
uint16 height = _file->readUint16LE();
uint16 unk1 = _file->readUint16LE();
uint16 unk2 = _file->readUint16LE();
if (unk1 != 8 || unk2 != 4) {
warning("Groovie::ROQ: unk1 = %d, unk2 = %d", unk1, unk2);
return false;
}
// If the size of the image has changed, resize the buffers
if ((width != _currBuf->w) || (height != _currBuf->h)) {
// Calculate the maximum scale that fits the screen
_scaleX = MIN(_syst->getWidth() / width, 2);
_scaleY = MIN(_syst->getHeight() / height, 2);
// Free the previous surfaces
_currBuf->free();
_prevBuf->free();
_showBuf.free();
// Allocate new buffers
_currBuf->create(width, height, 3);
_prevBuf->create(width, height, 3);
_showBuf.create(width * _scaleX, height * _scaleY, _vm->_pixelFormat.bytesPerPixel);
// Clear the buffers with black YUV values
byte *ptr1 = (byte *)_currBuf->getBasePtr(0, 0);
byte *ptr2 = (byte *)_prevBuf->getBasePtr(0, 0);
for (int i = 0; i < width * height; i++) {
*ptr1++ = 0;
*ptr1++ = 128;
*ptr1++ = 128;
*ptr2++ = 0;
*ptr2++ = 128;
*ptr2++ = 128;
}
#ifdef DITHER
// Reset the dithering algorithm with the new width
delete _dither;
_dither = new Graphics::SierraLight(width * _scaleX, _paletteLookup);
#endif
}
return true;
}
bool ROQPlayer::processBlockQuadCodebook(ROQBlockHeader &blockHeader) {
debugC(5, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Processing quad codebook block");
// Get the number of 2x2 pixel blocks to read
int newNum2blocks = blockHeader.param >> 8;
if (newNum2blocks == 0) {
newNum2blocks = 256;
}
if (newNum2blocks > _num2blocks)
_num2blocks = newNum2blocks;
// Get the number of 4x4 pixel blocks
_num4blocks = blockHeader.param & 0xFF;
if ((_num4blocks == 0) && (blockHeader.size > (uint32)_num2blocks * (6 + _alpha * 4))) {
_num4blocks = 256;
}
// Read the 2x2 codebook
for (int i = 0; i < newNum2blocks; i++) {
// Read the 4 Y components and their alpha channel
for (int j = 0; j < 4; j++) {
_codebook2[i * 10 + j * 2] = _file->readByte();
_codebook2[i * 10 + j * 2 + 1] = _alpha ? _file->readByte() : 255;
}
// Read the subsampled Cb and Cr
_file->read(&_codebook2[i * 10 + 8], 2);
}
// Read the 4x4 codebook
_file->read(_codebook4, _num4blocks * 4);
return true;
}
bool ROQPlayer::processBlockQuadVector(ROQBlockHeader &blockHeader) {
debugC(5, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Processing quad vector block");
// Get the mean motion vectors
int8 Mx = blockHeader.param >> 8;
int8 My = blockHeader.param & 0xFF;
// Calculate where the block should end
int32 endpos =_file->pos() + blockHeader.size;
// Reset the coding types
_codingTypeCount = 0;
// Traverse the image in 16x16 macroblocks
for (int macroY = 0; macroY < _currBuf->h; macroY += 16) {
for (int macroX = 0; macroX < _currBuf->w; macroX += 16) {
// Traverse the macroblock in 8x8 blocks
for (int blockY = 0; blockY < 16; blockY += 8) {
for (int blockX = 0; blockX < 16; blockX += 8) {
processBlockQuadVectorBlock(macroX + blockX, macroY + blockY, Mx, My);
}
}
}
}
// HACK: Skip the remaining bytes
int32 skipBytes = endpos -_file->pos();
if (skipBytes > 0) {
_file->skip(skipBytes);
if (skipBytes != 2) {
warning("Groovie::ROQ: Skipped %d bytes", skipBytes);
}
}
return true;
}
void ROQPlayer::processBlockQuadVectorBlock(int baseX, int baseY, int8 Mx, int8 My) {
uint16 codingType = getCodingType();
switch (codingType) {
case 0: // MOT: Skip block
break;
case 1: { // FCC: Copy an existing block
byte argument = _file->readByte();
int16 DDx = 8 - (argument >> 4);
int16 DDy = 8 - (argument & 0x0F);
copy(8, baseX, baseY, DDx - Mx, DDy - My);
break;
}
case 2: // SLD: Quad vector quantisation
// Upsample the 4x4 pixel block
paint8(_file->readByte(), baseX, baseY);
break;
case 3: // CCC:
// Traverse the block in 4x4 sub-blocks
for (int subBlockY = 0; subBlockY < 8; subBlockY += 4) {
for (int subBlockX = 0; subBlockX < 8; subBlockX += 4) {
processBlockQuadVectorBlockSub(baseX + subBlockX, baseY + subBlockY, Mx, My);
}
}
break;
}
}
void ROQPlayer::processBlockQuadVectorBlockSub(int baseX, int baseY, int8 Mx, int8 My) {
debugC(5, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Processing quad vector sub block");
uint16 codingType = getCodingType();
switch (codingType) {
case 0: // MOT: Skip block
break;
case 1: { // FCC: Copy an existing block
byte argument = _file->readByte();
int16 DDx = 8 - (argument >> 4);
int16 DDy = 8 - (argument & 0x0F);
copy(4, baseX, baseY, DDx - Mx, DDy - My);
break;
}
case 2: // SLD: Quad vector quantisation
paint4(_file->readByte(), baseX, baseY);
break;
case 3:
paint2(_file->readByte(), baseX , baseY);
paint2(_file->readByte(), baseX + 2, baseY);
paint2(_file->readByte(), baseX , baseY + 2);
paint2(_file->readByte(), baseX + 2, baseY + 2);
break;
}
}
bool ROQPlayer::processBlockStill(ROQBlockHeader &blockHeader) {
debugC(5, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Processing still (JPEG) block");
warning("Groovie::ROQ: JPEG frame (unfinshed)");
Graphics::JPEG *jpg = new Graphics::JPEG();
jpg->read(_file);
byte *y = (byte *)jpg->getComponent(1)->getBasePtr(0, 0);
byte *u = (byte *)jpg->getComponent(2)->getBasePtr(0, 0);
byte *v = (byte *)jpg->getComponent(3)->getBasePtr(0, 0);
byte *ptr = (byte *)_prevBuf->getBasePtr(0, 0);
for (int i = 0; i < _prevBuf->w * _prevBuf->h; i++) {
*ptr++ = *y++;
*ptr++ = *u++;
*ptr++ = *v++;
}
return true;
}
bool ROQPlayer::processBlockSoundMono(ROQBlockHeader &blockHeader) {
debugC(5, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Processing mono sound block");
// Verify the block header
if (blockHeader.type != 0x1020) {
return false;
}
// Initialize the audio stream if needed
if (!_audioStream) {
byte flags = Audio::Mixer::FLAG_16BITS | Audio::Mixer::FLAG_AUTOFREE;
#ifdef SCUMM_LITTLE_ENDIAN
flags |= Audio::Mixer::FLAG_LITTLE_ENDIAN;
#endif
_audioStream = Audio::makeAppendableAudioStream(22050, flags);
Audio::SoundHandle sound_handle;
g_system->getMixer()->playInputStream(Audio::Mixer::kPlainSoundType, &sound_handle, _audioStream);
}
// Create the audio buffer
int16 *buffer = new int16[blockHeader.size];
// Initialize the prediction with the block parameter
int16 prediction = blockHeader.param ^ 0x8000;
// Process the data
for (uint16 i = 0; i < blockHeader.size; i++) {
int16 data = _file->readByte();
if (data < 0x80) {
prediction += data * data;
} else {
data -= 0x80;
prediction -= data * data;
}
buffer[i] = prediction;
}
// Queue the read buffer
_audioStream->queueBuffer((byte *)buffer, blockHeader.size * 2);
return true;
}
bool ROQPlayer::processBlockSoundStereo(ROQBlockHeader &blockHeader) {
debugC(5, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Processing stereo sound block");
// Verify the block header
if (blockHeader.type != 0x1021) {
return false;
}
// Initialize the audio stream if needed
if (!_audioStream) {
byte flags = Audio::Mixer::FLAG_16BITS | Audio::Mixer::FLAG_AUTOFREE | Audio::Mixer::FLAG_STEREO;
#ifdef SCUMM_LITTLE_ENDIAN
flags |= Audio::Mixer::FLAG_LITTLE_ENDIAN;
#endif
_audioStream = Audio::makeAppendableAudioStream(22050, flags);
Audio::SoundHandle sound_handle;
g_system->getMixer()->playInputStream(Audio::Mixer::kPlainSoundType, &sound_handle, _audioStream);
}
// Create the audio buffer
int16 *buffer = new int16[blockHeader.size];
// Initialize the prediction with the block parameter
int16 predictionLeft = (blockHeader.param & 0xFF00) ^ 0x8000;
int16 predictionRight = (blockHeader.param << 8) ^ 0x8000;
bool left = true;
// Process the data
for (uint16 i = 0; i < blockHeader.size; i++) {
int16 data = _file->readByte();
if (left) {
if (data < 0x80) {
predictionLeft += data * data;
} else {
data -= 0x80;
predictionLeft -= data * data;
}
buffer[i] = predictionLeft;
} else {
if (data < 0x80) {
predictionRight += data * data;
} else {
data -= 0x80;
predictionRight -= data * data;
}
buffer[i] = predictionRight;
}
left = !left;
}
// Queue the read buffer
_audioStream->queueBuffer((byte *)buffer, blockHeader.size * 2);
return true;
}
bool ROQPlayer::processBlockAudioContainer(ROQBlockHeader &blockHeader) {
debugC(5, kGroovieDebugVideo | kGroovieDebugAll, "Groovie::ROQ: Processing audio container block: 0x%04X", blockHeader.param);
return true;
}
byte ROQPlayer::getCodingType() {
_codingType <<= 2;
if (!_codingTypeCount) {
_codingType = _file->readUint16LE();
_codingTypeCount = 8;
}
_codingTypeCount--;
return (_codingType >> 14);
}
void ROQPlayer::paint2(byte i, int destx, int desty) {
if (i > _num2blocks) {
error("Groovie::ROQ: Invalid 2x2 block %d (%d available)", i, _num2blocks);
}
byte *block = &_codebook2[i * 10];
byte u = block[8];
byte v = block[9];
byte *ptr = (byte *)_currBuf->getBasePtr(destx, desty);
for (int y = 0; y < 2; y++) {
for (int x = 0; x < 2; x++) {
// Basic alpha test
// TODO: Blending
if (*(block + 1) > 128) {
*ptr = *block;
*(ptr + 1) = u;
*(ptr + 2) = v;
}
ptr += 3;
block += 2;
}
ptr += _currBuf->pitch - 6;
}
}
void ROQPlayer::paint4(byte i, int destx, int desty) {
if (i > _num4blocks) {
error("Groovie::ROQ: Invalid 4x4 block %d (%d available)", i, _num4blocks);
}
byte *block4 = &_codebook4[i * 4];
for (int origy = 0; origy < 4; origy += 2) {
for (int origx = 0; origx < 4; origx += 2) {
paint2(*block4, destx + origx, desty + origy);
block4++;
}
}
}
void ROQPlayer::paint8(byte i, int destx, int desty) {
if (i > _num4blocks) {
error("Groovie::ROQ: Invalid 4x4 block %d (%d available)", i, _num4blocks);
}
byte *block4 = &_codebook4[i * 4];
for (int y4 = 0; y4 < 2; y4++) {
for (int x4 = 0; x4 < 2; x4++) {
byte *block2 = &_codebook2[(*block4) * 10];
byte u = block2[8];
byte v = block2[9];
block4++;
for (int y2 = 0; y2 < 2; y2++) {
for (int x2 = 0; x2 < 2; x2++) {
for (int repy = 0; repy < 2; repy++) {
for (int repx = 0; repx < 2; repx++) {
// Basic alpha test
// TODO: Blending
if (*(block2 + 1) > 128) {
byte *ptr = (byte *)_currBuf->getBasePtr(destx + x4*4 + x2*2 + repx, desty + y4*4 + y2*2 + repy);
*ptr = *block2;
*(ptr + 1) = u;
*(ptr + 2) = v;
}
}
}
block2 += 2;
}
}
}
}
}
void ROQPlayer::copy(byte size, int destx, int desty, int offx, int offy) {
offx *= _offScale / _scaleX;
offy *= _offScale / _scaleY;
// Get the beginning of the first line
byte *dst = (byte *)_currBuf->getBasePtr(destx, desty);
byte *src = (byte *)_prevBuf->getBasePtr(destx + offx, desty + offy);
for (int i = 0; i < size; i++) {
// Copy the current line
memcpy(dst, src, size * _currBuf->bytesPerPixel);
// Move to the beginning of the next line
dst += _currBuf->pitch;
src += _currBuf->pitch;
}
}
} // End of Groovie namespace
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