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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.
*
*/
#include "titanic/support/avi_surface.h"
#include "titanic/support/screen_manager.h"
#include "titanic/support/video_surface.h"
#include "titanic/events.h"
#include "titanic/titanic.h"
#include "common/system.h"
#include "graphics/pixelformat.h"
#include "graphics/screen.h"
#include "video/avi_decoder.h"
namespace Titanic {
#define DEFAULT_FPS 15.0
Video::AVIDecoder::AVIVideoTrack &AVIDecoder::getVideoTrack(uint idx) {
assert(idx < _videoTracks.size());
AVIVideoTrack *track = static_cast<AVIVideoTrack *>(_videoTracks[idx].track);
return *track;
}
AVISurface::AVISurface(const CResourceKey &key) : _movieName(key.getString()) {
_videoSurface = nullptr;
_streamCount = 0;
_movieFrameSurface[0] = _movieFrameSurface[1] = nullptr;
_framePixels = nullptr;
_priorFrameTime = 0;
// Reset current frame. We need to keep track of frames separately from the decoder,
// since it needs to be able to go beyond the frame count or to negative to allow
// correct detection of when range playbacks have finished
_currentFrame = -1;
_priorFrame = -1;
// Create a decoder
_decoder = new AVIDecoder();
if (!_decoder->loadFile(_movieName))
error("Could not open video - %s", key.getString().c_str());
_streamCount = _decoder->getTransparencyTrack() ? 2 : 1;
_soundManager = nullptr;
_hasAudio = false;
_frameRate = DEFAULT_FPS;
}
AVISurface::~AVISurface() {
if (_videoSurface)
_videoSurface->_flipVertically = false;
delete _framePixels;
delete _movieFrameSurface[0];
delete _movieFrameSurface[1];
delete _decoder;
}
bool AVISurface::play(uint flags, CGameObject *obj) {
if (flags & MOVIE_REVERSE)
return play(_decoder->getFrameCount() - 1, 0, flags, obj);
else
return play(0, _decoder->getFrameCount() - 1, flags, obj);
}
bool AVISurface::play(int startFrame, int endFrame, uint flags, CGameObject *obj) {
if (flags & MOVIE_STOP_PREVIOUS)
stop();
return play(startFrame, endFrame, -1, flags, obj);
}
bool AVISurface::play(int startFrame, int endFrame, int initialFrame, uint flags, CGameObject *obj) {
CMovieRangeInfo *info = new CMovieRangeInfo();
info->_startFrame = startFrame;
info->_endFrame = endFrame;
info->_isReversed = endFrame < startFrame;
info->_initialFrame = 0;
info->_isRepeat = flags & MOVIE_REPEAT;
if (obj) {
CMovieEvent *me = new CMovieEvent();
me->_type = MET_MOVIE_END;
me->_startFrame = startFrame;
me->_endFrame = endFrame;
me->_initialFrame = 0;
me->_gameObject = obj;
info->addEvent(me);
}
_movieRangeInfo.push_back(info);
if (_movieRangeInfo.size() == 1) {
// First play call, so start the movie playing
bool isReversePlayback = _movieRangeInfo.front()->_endFrame < _movieRangeInfo.front()->_startFrame;
if (isReversed() != isReversePlayback)
setFrameRate(isReversePlayback ? -DEFAULT_FPS : DEFAULT_FPS);
return startAtFrame(initialFrame);
} else {
return true;
}
}
void AVISurface::stop() {
_decoder->stop();
_movieRangeInfo.destroyContents();
}
void AVISurface::pause() {
_decoder->pauseVideo(true);
}
void AVISurface::resume() {
if (_decoder->isPaused())
_decoder->pauseVideo(false);
}
bool AVISurface::startAtFrame(int frameNumber) {
if (isPlaying())
// If it's already playing, then don't allow it
return false;
if (frameNumber == -1)
// Default to starting frame of first movie range
frameNumber = _movieRangeInfo.front()->_startFrame;
if (frameNumber == (int)_decoder->getFrameCount())
--frameNumber;
// Start the playback
_decoder->start();
// Seek to the starting frame
_currentFrame = -1;
seekToFrame(frameNumber);
// If we're in reverse playback, set the decoder to play in reverse
if (isReversed())
_decoder->setReverse(true);
setFrameRate(_frameRate);
// Render the first frame
renderFrame();
return true;
}
void AVISurface::seekToFrame(uint frameNumber) {
if (isReversed() && frameNumber == _decoder->getFrameCount())
--frameNumber;
if ((int)frameNumber != _currentFrame) {
if (!isReversed() && frameNumber > 0) {
_decoder->seekToFrame(frameNumber - 1);
renderFrame();
}
_decoder->seekToFrame(frameNumber);
_currentFrame = _priorFrame = (int)frameNumber;
}
}
bool AVISurface::handleEvents(CMovieEventList &events) {
if (!isPlaying())
return true;
CMovieRangeInfo *info = _movieRangeInfo.front();
_priorFrame = _currentFrame;
_currentFrame += isReversed() ? -1 : 1;
int newFrame = _currentFrame;
if ((info->_isReversed && newFrame < info->_endFrame) ||
(!info->_isReversed && newFrame > info->_endFrame)) {
if (info->_isRepeat) {
newFrame = info->_startFrame;
} else {
info->getMovieEnd(events);
_movieRangeInfo.remove(info);
delete info;
if (_movieRangeInfo.empty()) {
// No more ranges, so stop playback
stop();
} else {
// Not empty, so move onto new first one
info = _movieRangeInfo.front();
newFrame = info->_startFrame;
bool reversed = info->_endFrame < info->_startFrame;
if (isReversed() != reversed)
// Direction is different, so force frame seek below
_priorFrame = -1;
// Set the next clip's direction
setFrameRate(reversed ? -DEFAULT_FPS : DEFAULT_FPS);
}
}
}
if (isPlaying()) {
if (newFrame != getFrame())
// The frame has been changed, so move to new position
seekToFrame(newFrame);
// Get any events for the given position
info->getMovieFrame(events, newFrame);
return renderFrame();
} else {
return false;
}
}
void AVISurface::setVideoSurface(CVideoSurface *surface) {
_videoSurface = surface;
// Handling for secondary video stream
if (_streamCount == 2) {
const Common::String &streamName = _decoder->getTransparencyTrack()->getName();
if (streamName == "mask0") {
_videoSurface->_transparencyMode = TRANS_MASK0;
} else if (streamName == "mask255") {
_videoSurface->_transparencyMode = TRANS_MASK255;
} else if (streamName == "alpha0") {
_videoSurface->_transparencyMode = TRANS_ALPHA0;
} else if (streamName == "alpha255") {
_videoSurface->_transparencyMode = TRANS_ALPHA255;
}
}
setupDecompressor();
}
void AVISurface::setupDecompressor() {
if (!_decoder)
return;
for (int idx = 0; idx < _streamCount; ++idx) {
Graphics::PixelFormat format = (idx == 0) ?
_decoder->getVideoTrack(0).getPixelFormat() :
_decoder->getTransparencyTrack()->getPixelFormat();
int decoderPitch = _decoder->getWidth() * format.bytesPerPixel;
bool flag = false;
if (idx == 0 && _videoSurface && _videoSurface->getPitch() == decoderPitch) {
const uint bitCount = _decoder->getVideoTrack(0).getBitCount();
const int vDepth = _videoSurface->getPixelDepth();
switch (bitCount) {
case 15:
flag = vDepth == 1;
break;
case 16:
flag = vDepth == 1 || vDepth == 2;
break;
case 24:
flag = vDepth == 3;
break;
default:
break;
}
}
if (!flag) {
_framePixels = new Graphics::ManagedSurface(_decoder->getWidth(), _decoder->getHeight(),
_decoder->getVideoTrack(0).getPixelFormat());
} else if (idx == 0) {
// The original developers used a vertical flipped playback to indicate
// an incompatibility between source video and dest surface bit-depths,
// which would result in poor playback performance
_videoSurface->_flipVertically = true;
}
}
// Set a default frame rate
_frameRate = DEFAULT_FPS;
}
void AVISurface::copyMovieFrame(const Graphics::Surface &src, Graphics::ManagedSurface &dest) {
// WORKAROUND: Handle rare cases where frame sizes don't match the video size
Common::Rect copyRect(0, 0, MIN(src.w, dest.w), MIN(src.h, dest.h));
if (src.format.bytesPerPixel == 1) {
// Paletted 8-bit, so convert to 16-bit and copy over
const byte *palette = _decoder->getPalette();
if (palette) {
Graphics::Surface *s = src.convertTo(dest.format, palette);
dest.blitFrom(*s, copyRect, Common::Point(0, 0));
s->free();
delete s;
}
} else if (src.format.bytesPerPixel == 2) {
// Source is already 16-bit, with no alpha, so do a straight copy
dest.blitFrom(src, copyRect, Common::Point(0, 0));
} else {
// Source is 32-bit which may have transparent pixels. Copy over each
// pixel, replacing transparent pixels with the special transparency color
byte a, r, g, b;
assert(src.format.bytesPerPixel == 4 && dest.format.bytesPerPixel == 2);
uint16 transPixel = _videoSurface->getTransparencyColor();
for (uint y = 0; y < MIN(src.h, dest.h); ++y) {
const uint32 *pSrc = (const uint32 *)src.getBasePtr(0, y);
uint16 *pDest = (uint16 *)dest.getBasePtr(0, y);
for (uint x = 0; x < MIN(src.w, dest.w); ++x, ++pSrc, ++pDest) {
src.format.colorToARGB(*pSrc, a, r, g, b);
assert(a == 0 || a == 0xff);
*pDest = (a == 0 && _streamCount == 1) ? transPixel : dest.format.RGBToColor(r, g, b);
}
}
}
}
uint AVISurface::getWidth() const {
return _decoder->getWidth();
}
uint AVISurface::getHeight() const {
return _decoder->getHeight();
}
void AVISurface::setFrame(int frameNumber) {
// If playback was in process, stop it
if (isPlaying())
stop();
// Ensure the frame number is valid
if (frameNumber >= (int)_decoder->getFrameCount())
frameNumber = _decoder->getFrameCount() - 1;
seekToFrame(frameNumber);
renderFrame();
}
bool AVISurface::isNextFrame() {
if (!_decoder->endOfVideo())
return _decoder->getTimeToNextFrame() == 0;
// We're at the end of the video, so we need to manually
// keep track of frame delays.
const uint FRAME_TIME = 1000 / DEFAULT_FPS;
uint32 currTime = g_system->getMillis();
if (currTime >= (_priorFrameTime + FRAME_TIME)) {
_priorFrameTime = currTime;
return true;
}
return false;
}
bool AVISurface::renderFrame() {
// Check there's a frame ready for display
if (!_decoder->needsUpdate())
return false;
// Make a copy of each decoder's video frame
for (int idx = 0; idx < _streamCount; ++idx) {
const Graphics::Surface *frame;
if (idx == 0) {
frame = _decoder->decodeNextFrame();
if (!_movieFrameSurface[0])
_movieFrameSurface[0] = new Graphics::ManagedSurface(_decoder->getWidth(), _decoder->getHeight(),
g_system->getScreenFormat());
copyMovieFrame(*frame, *_movieFrameSurface[0]);
} else {
frame = _decoder->decodeNextTransparency();
if (!_movieFrameSurface[1])
_movieFrameSurface[1] = new Graphics::ManagedSurface(_decoder->getWidth(), _decoder->getHeight(),
Graphics::PixelFormat::createFormatCLUT8());
_movieFrameSurface[1]->blitFrom(*frame);
}
}
if (!_framePixels) {
if (_videoSurface->lock()) {
// Blit the frame directly to the video surface
assert(_streamCount == 1);
_videoSurface->blitFrom(Point(0, 0), &_movieFrameSurface[0]->rawSurface());
_videoSurface->unlock();
}
} else {
const Graphics::Surface &frameSurface = _movieFrameSurface[0]->rawSurface();
_videoSurface->lock();
if (frameSurface.format.bytesPerPixel == 1) {
// For paletted 8-bit surfaces, we need to convert it to 16-bit,
// since the blitting method we're using doesn't support palettes
Graphics::Surface *s = frameSurface.convertTo(g_system->getScreenFormat(),
_decoder->getPalette());
_videoSurface->getRawSurface()->blitFrom(*s);
s->free();
delete s;
} else {
_videoSurface->getRawSurface()->blitFrom(frameSurface);
}
_videoSurface->unlock();
}
return false;
}
bool AVISurface::addEvent(int *frameNumber, CGameObject *obj) {
if (!_movieRangeInfo.empty()) {
CMovieRangeInfo *tail = _movieRangeInfo.back();
assert(frameNumber);
if (*frameNumber == -1)
*frameNumber = tail->_startFrame;
CMovieEvent *me = new CMovieEvent();
me->_type = MET_FRAME;
me->_startFrame = 0;
me->_endFrame = 0;
me->_initialFrame = *frameNumber;
me->_gameObject = obj;
tail->addEvent(me);
return _movieRangeInfo.size() == 1 && *frameNumber == getFrame();
}
return false;
}
void AVISurface::setFrameRate(double rate) {
// Store the new frame rate
_frameRate = rate;
if (_decoder->isPlaying()) {
// Convert rate from fps to relative to 1.0 (normal speed)
const int PRECISION = 10000;
double playRate = rate / DEFAULT_FPS;
Common::Rational pRate((int)(playRate * PRECISION), PRECISION);
_decoder->setRate(pRate);
}
}
Graphics::ManagedSurface *AVISurface::getSecondarySurface() {
return _streamCount <= 1 ? nullptr : _movieFrameSurface[1];
}
Graphics::ManagedSurface *AVISurface::duplicateTransparency() const {
if (_streamCount <= 1) {
return nullptr;
} else {
Graphics::ManagedSurface *dest = new Graphics::ManagedSurface(_movieFrameSurface[1]->w,
_movieFrameSurface[1]->h, Graphics::PixelFormat::createFormatCLUT8());
dest->blitFrom(*_movieFrameSurface[1]);
return dest;
}
}
bool AVISurface::playCutscene(const Rect &r, uint startFrame, uint endFrame) {
if (g_vm->shouldQuit())
return false;
if (_currentFrame != ((int)startFrame - 1) || startFrame == 0) {
// Start video playback at the desired starting frame
setFrame(startFrame);
startAtFrame(startFrame);
_currentFrame = startFrame;
} else {
// Already in position, so pick up where we left off
_decoder->start();
}
bool isDifferent = _movieFrameSurface[0]->w != r.width() ||
_movieFrameSurface[0]->h != r.height();
bool isFinished = true;
while (_currentFrame < (int)endFrame && !g_vm->shouldQuit()) {
if (isNextFrame()) {
renderFrame();
++_currentFrame;
if (isDifferent) {
// Clear the destination area, and use the transBlitFrom method,
// which supports arbitrary scaling, to reduce to the desired size
g_vm->_screen->fillRect(r, 0);
g_vm->_screen->transBlitFrom(*_movieFrameSurface[0],
Common::Rect(0, 0, _movieFrameSurface[0]->w, _movieFrameSurface[0]->h), r);
} else {
g_vm->_screen->blitFrom(*_movieFrameSurface[0], Common::Point(r.left, r.top));
}
g_vm->_screen->update();
g_vm->_events->pollEvents();
}
// Brief wait, and check at the same time for clicks to abort the clip
if (g_vm->_events->waitForPress(10)) {
isFinished = false;
break;
}
}
stop();
return isFinished && !g_vm->shouldQuit();
}
uint AVISurface::getBitDepth() const {
return _decoder->getVideoTrack(0).getBitCount();
}
} // End of namespace Titanic
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