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/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "videorecorder.h"
#ifdef XVIDEXPORT
#include "../libs/revel/revel.h"
#include "../events.h"
#include "../gameoptions.h"
class VideoRecorderInternals {
public:
VideoRecorderInternals() : open(false), frameCounterOut(0), frameCounterIn(0), lastFrame(NULL) {};
~VideoRecorderInternals() { if ( lastFrame ) delete[] lastFrame; };
int encoderHandle;
Revel_Params revParams;
bool open;
int framerate;
long lastTick;
ASCString filename;
int frameCounterOut; //<! counts all frames that where send to the videorecorder
int frameCounterIn; //<! counts all frames that where passed to the video encoder
int* lastFrame;
};
void checkErrors( const Revel_Error& err )
{
if (err != REVEL_ERR_NONE)
{
printf("Revel Error : %d\n", err);
}
}
VideoRecorder::VideoRecorder( const ASCString& filename, const SDL_Surface* surf, int framerate, int quality )
{
data = new VideoRecorderInternals();
data->framerate = framerate;
data->lastTick = getTicker();
data->filename = filename;
Revel_Error revError = Revel_CreateEncoder(&data->encoderHandle);
checkErrors( revError );
Revel_InitializeParams(&data->revParams);
data->revParams.width = surf->w;
data->revParams.height = surf->h;
data->revParams.frameRate = data->framerate;
float q = quality;
q /= 100.0f;
data->revParams.quality = q;
data->revParams.codec = REVEL_CD_XVID;
data->revParams.hasAudio = 0;
// Initiate encoding
revError = Revel_EncodeStart(data->encoderHandle, filename.c_str(), &data->revParams);
data->open = true;
}
void VideoRecorder::storeFrame( const SDL_Surface* surf )
{
if ( !surf )
surf = SDL_GetVideoSurface();
if ( !surf )
return;
Revel_VideoFrame frame;
frame.width = surf->w;
frame.height = surf->h;
frame.bytesPerPixel = 4;
bool directScreenRender = false;
/*
if ( surf->pitch == surf->w*4 && surf->format->BytesPerPixel == 4 ) {
if ( surf->format->Rshift == 0 && surf->format->Gshift == 8 && surf->format->Bshift == 16 ) {
frame.pixelFormat = REVEL_PF_RGBA;
directScreenRender = true;
}
if ( surf->format->Rshift == 24 && surf->format->Gshift == 16 && surf->format->Bshift == 8 ) {
frame.pixelFormat = REVEL_PF_ABGR;
directScreenRender = true;
}
}
*/
if ( directScreenRender ) {
int frameSize;
frame.pixels = surf->pixels;
Revel_Error revError = Revel_EncodeFrame(data->encoderHandle, &frame, &frameSize);
checkErrors( revError);
} else {
frame.pixelFormat = REVEL_PF_RGBA;
int* buf;
frame.pixels = buf = new int[frame.width*frame.height];
Uint32* pix = (Uint32*)frame.pixels;
bool diff = false;
int* lastBuf = data->lastFrame;
if ( !data->lastFrame )
diff = true;
for ( int y = 0; y < surf->h; ++y ) {
Uint32* src = ((Uint32*) surf->pixels) + (surf->pitch/4*y);
for ( int x = 0 ; x < surf->w; ++x ) {
Uint8 r,g,b,a;
SDL_GetRGBA( *src, surf->format, &r,&g,&b,&a);
*pix = r + (g<<8) + (b<<16) + (a<<24);
if ( lastBuf ) {
if ( *pix != *lastBuf )
diff = true;
++lastBuf;
}
++pix;
++src;
}
}
if ( diff ) {
int frameSize;
Revel_Error revError = Revel_EncodeFrame(data->encoderHandle, &frame, &frameSize);
checkErrors( revError);
++data->frameCounterIn;
}
if ( data->lastFrame )
delete[] data->lastFrame;
data->lastFrame = buf;
}
++data->frameCounterOut;
// we are limited the video to our framerate
while ( getTicker() < data->lastTick + 100/data->framerate )
releasetimeslice();
data->lastTick = getTicker();
}
void VideoRecorder::close()
{
if ( data->open ) {
int totalSize;
Revel_Error revError = Revel_EncodeEnd(data->encoderHandle, &totalSize);
checkErrors( revError );
Revel_DestroyEncoder(data->encoderHandle);
}
printf("recorded %d / %d frames\n", data->frameCounterOut, data->frameCounterIn );
}
const ASCString VideoRecorder::getFilename()
{
return data->filename;
}
VideoRecorder::~VideoRecorder()
{
close();
delete data;
}
#else
VideoRecorder::VideoRecorder( const ASCString& filename, const SDL_Surface* surf, int framerate, int quality ) {}
const ASCString VideoRecorder::getFilename() { return ""; }
void VideoRecorder::storeFrame( const SDL_Surface* surf ) {}
void VideoRecorder::close() {}
VideoRecorder::~VideoRecorder() {}
#endif
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