void CImage::ReadFrameBuffer_BMP () {
nx = param.x_resolution;
ny = param.y_resolution;
depth = 4;
DisposeData ();
data = (unsigned char *) malloc (nx * ny * depth * sizeof (unsigned char));
glReadBuffer (GL_FRONT);
glReadPixels (0, 0, nx, ny, GL_BGRA, GL_UNSIGNED_BYTE, data);
}
bool CImage::LoadPng (const char *filepath, bool mirroring) {
SDL_Surface *sdlImage;
unsigned char *sdlData;
sdlImage = IMG_Load (filepath);
if (sdlImage == 0) {
Message ("could not load image", filepath);
return false;
}
nx = sdlImage->w;
ny = sdlImage->h;
depth = sdlImage->format->BytesPerPixel;
pitch = sdlImage->pitch;
DisposeData ();
data = (unsigned char *) malloc (pitch * ny * sizeof (unsigned char));
if (SDL_MUSTLOCK (sdlImage)) {
if (SDL_LockSurface (sdlImage) < 0) {
Message ("mustlock error");
return false;
};
}
sdlData = (unsigned char *) sdlImage->pixels;
if (mirroring) {
for (int y=0; y<ny; y++) {
for (int x=0; x<pitch; x++) {
data [y * pitch + x] = sdlData [(ny-1-y) * pitch + x];
}
}
} else {
for (int y=0; y<ny; y++) {
for (int x=0; x<pitch; x++) {
data [y * pitch + x] = sdlData [y * pitch + x];
}
}
}
if (SDL_MUSTLOCK (sdlImage)) SDL_UnlockSurface (sdlImage);
SDL_FreeSurface (sdlImage);
return true;
}
bool CImage::ReadFrameBuffer_PPM () {
int viewport[4];
glGetIntegerv (GL_VIEWPORT, viewport);
nx = viewport[2];
ny = viewport[3];
depth = 3;
DisposeData ();
data = (unsigned char *) malloc (nx * ny * depth * sizeof (unsigned char));
glReadBuffer (GL_FRONT);
for (int i=0; i<viewport[3]; i++) {
glReadPixels (viewport[0], viewport[1] + viewport[3] - 1 - i,
viewport[2], 1, GL_RGB, GL_UNSIGNED_BYTE, data + viewport[2] * i * 3);
}
return true;
}
/**
* Function: main
* --------------
* Serves as the entry point of the full RSS News Feed Aggregator.
*
* @param argc the number of tokens making up the shell command invoking the
* application. It should be either 1 or 2--2 when the used wants to
* specify what flat text file should be used to source all of the
* RSS feeds.
* @param argv the array of one of more tokens making up the command line invoking
* the application. The 0th token is ignored, and the 1st one, if present,
* is taken to be the path identifying where the list of RSS feeds is.
* @return always 0 if it main returns normally (although there might be exit(n) calls
* within the code base that end the program abnormally)
*/
int main(int argc, char **argv)
{
const char *feedsFileURL = (argc == 1) ? kDefaultFeedsFileURL : argv[1];
Welcome(kWelcomeTextURL);
rssFeedData data;
CreateDataStructure(&data);
LoadStopWords(kDefaultStopWordsURL,&data.stopWords);
BuildIndices(feedsFileURL, &data);
// tests
// HashSetMap(&data.stopWords, StringMap, NULL);
// HashSetMap(&data.articles, ArticleMap, NULL);
// HashSetMap(&data.indices, IndexMap, NULL);
QueryIndices(&data);
DisposeData(&data);
return 0;
}
MovieEncoder::~MovieEncoder()
{
DisposeData();
}
// When this is running, no member variable should be accessed
// from other threads
status_t
MovieEncoder::_EncoderThread()
{
int32 framesLeft = fFileList->CountItems();
int32 framesWritten = 0;
if (framesLeft <= 0) {
DisposeData();
BMessage message(kEncodingFinished);
message.AddInt32("status", (int32)B_ERROR);
fMessenger.SendMessage(&message);
return B_ERROR;
}
// Create movie
entry_ref movieRef;
get_ref_for_path(fOutputFile.Path(), &movieRef);
BitmapEntry* entry = fFileList->ItemAt(0);
BBitmap* bitmap = entry->Bitmap();
BRect sourceFrame = bitmap->Bounds();
delete bitmap;
if (!fDestFrame.IsValid())
fDestFrame = sourceFrame.OffsetToCopy(B_ORIGIN);
// Calc the average time difference between the first 100 frames,
// and use it to calculate the framerate.
// TODO: Actually we could just calculate the number of frames and
// the time difference between the first and the last one.
/*int32 maxTimeStampNum = std::min((int32)100, fFileList->CountItems());
bigtime_t previousFrameTime = entry->TimeStamp();
bigtime_t diffSum = 0;
for (int32 i = 0; i < maxTimeStampNum; i++) {
BitmapEntry* entry = fFileList->ItemAt(i);
bigtime_t currentFrameTime = entry->TimeStamp();
diffSum += currentFrameTime - previousFrameTime;
previousFrameTime = currentFrameTime;
}
float medianDiffTime = diffSum / maxTimeStampNum;
*/
int32 numFrames = fFileList->CountItems();
BitmapEntry* firstEntry = fFileList->ItemAt(0);
BitmapEntry* lastEntry = fFileList->ItemAt(numFrames - 1);
int frameSeconds = (1000000 * numFrames) / (lastEntry->TimeStamp() - firstEntry->TimeStamp());
media_format inputFormat = fFormat;
inputFormat.u.raw_video.field_rate = frameSeconds;
status_t status = _CreateFile(movieRef, fFileFormat, inputFormat, fCodecInfo);
if (status < B_OK) {
DisposeData();
BMessage message(kEncodingFinished);
message.AddInt32("status", (int32)status);
fMessenger.SendMessage(&message);
return status;
}
// Bitmap and view used to convert the source bitmap
// to the correct size and depth
BBitmap* destBitmap = new BBitmap(fDestFrame, fColorSpace, true);
BView* destDrawer = new BView(fDestFrame, "drawing view", B_FOLLOW_NONE, 0);
if (destBitmap->Lock()) {
destBitmap->AddChild(destDrawer);
destBitmap->Unlock();
}
const uint32 keyFrameFrequency = 10;
// TODO: Make this tunable
BMessage progressMessage(B_UPDATE_STATUS_BAR);
progressMessage.AddFloat("delta", 1.0);
destBitmap->Bounds().PrintToStream();
PrintMediaFormat(inputFormat);
status = B_OK;
while (BitmapEntry* entry = const_cast<FileList*>(fFileList)->Pop()) {
if (fKillThread)
break;
bool keyFrame = (framesWritten % keyFrameFrequency == 0);
BBitmap* frame = entry->Bitmap();
if (frame == NULL) {
// TODO: What to do here ? Exit with an error ?
std::cerr << "Error while loading bitmap entry" << std::endl;
delete entry;
continue;
}
// Draw scaled
if (status == B_OK) {
destBitmap->Lock();
destDrawer->DrawBitmap(frame, frame->Bounds(), destDrawer->Bounds());
destDrawer->Sync();
destBitmap->Unlock();
}
delete frame;
delete entry;
if (status == B_OK)
status = _WriteFrame(destBitmap, keyFrame);
if (status != B_OK)
break;
framesWritten++;
if (fMessenger.IsValid())
fMessenger.SendMessage(new BMessage(progressMessage));
else {
// BMessenger is no longer valid. This means that the application
// has been closed or it has crashed.
break;
}
}
delete destBitmap;
DisposeData();
if (fMessenger.IsValid()) {
BMessage message(kEncodingFinished);
message.AddInt32("status", (int32)status);
message.AddInt32("frames", (int32)framesWritten);
fMessenger.SendMessage(&message);
}
return status;
}
status_t
MovieEncoder::Encode()
{
int32 framesLeft = fFileList->CountItems();
int32 framesWritten = 0;
if (framesLeft <= 0) {
DisposeData();
BMessage message(kEncodingFinished);
message.AddInt32("status", (int32)B_ERROR);
fMessenger.SendMessage(&message);
return B_ERROR;
}
// Create movie
char movieName[B_FILE_NAME_LENGTH];
MakeUniqueName(fOutputFile.Path(), movieName, B_FILE_NAME_LENGTH);
entry_ref movieRef;
get_ref_for_path(movieName, &movieRef);
media_file_format fileFormat;
if (!GetMediaFileFormat(fFamily, fileFormat)) {
BMessage message(kEncodingFinished);
message.AddInt32("status", (int32)B_ERROR);
fMessenger.SendMessage(&message);
return B_ERROR;
}
BBitmap* bitmap = BTranslationUtils::GetBitmapFile(fFileList->ItemAt(0));
BRect sourceFrame = bitmap->Bounds();
delete bitmap;
if (!fDestFrame.IsValid())
fDestFrame = sourceFrame.OffsetToCopy(B_ORIGIN);
BitmapMovie* movie = new BitmapMovie(fDestFrame.IntegerWidth() + 1,
fDestFrame.IntegerHeight() + 1, fColorSpace);
status_t error = movie->CreateFile(movieRef, fileFormat, fFormat, fCodecInfo);
if (error < B_OK) {
delete movie;
DisposeData();
BMessage message(kEncodingFinished);
message.AddInt32("status", (int32)error);
fMessenger.SendMessage(&message);
return error;
}
// Bitmap and view used to convert the source bitmap
// to the correct size and depth
BBitmap* destBitmap = new BBitmap(fDestFrame, fColorSpace, true);
BView* destDrawer = new BView(fDestFrame, "drawing view", B_FOLLOW_NONE, 0);
if (destBitmap->Lock()) {
destBitmap->AddChild(destDrawer);
destBitmap->Unlock();
}
const uint32 keyFrameFrequency = 10;
BMessage progressMessage(B_UPDATE_STATUS_BAR);
progressMessage.AddFloat("delta", 1.0);
bool keyFrame = true;
for (int32 i = 0; i < fFileList->CountItems(); i++) {
if (framesWritten % keyFrameFrequency == 0)
keyFrame = true;
const char* fileName = fFileList->ItemAt(i);
BBitmap* frame = BTranslationUtils::GetBitmapFile(fileName);
if (frame == NULL)
continue;
// Draw scaled
if (error == B_OK) {
destBitmap->Lock();
destDrawer->DrawBitmap(frame, frame->Bounds(), destDrawer->Bounds());
destDrawer->Sync();
destBitmap->Unlock();
}
delete frame;
if (error == B_OK)
error = movie->WriteFrame(destBitmap, keyFrame);
if (error == B_OK) {
framesWritten++;
keyFrame = false;
} else {
printf("%s\n", strerror(error));
break;
}
if (fMessenger.IsValid())
fMessenger.SendMessage(new BMessage(progressMessage));
}
//printf("%ld frames written\n", framesWritten);
delete movie;
delete destBitmap;
//delete cursor;
DisposeData();
BMessage message(kEncodingFinished);
message.AddInt32("status", (int32)B_OK);
fMessenger.SendMessage(&message);
return B_OK;
}
status_t
MovieEncoder::Encode()
{
int32 framesLeft = fFileList->CountItems();
int32 framesWritten = 0;
if (framesLeft <= 0) {
DisposeData();
BMessage message(kEncodingFinished);
message.AddInt32("status", (int32)B_ERROR);
fMessenger.SendMessage(&message);
return B_ERROR;
}
// Create movie
char movieName[B_FILE_NAME_LENGTH];
MakeUniqueName(fOutputFile.Path(), movieName, B_FILE_NAME_LENGTH);
entry_ref movieRef;
get_ref_for_path(movieName, &movieRef);
BBitmap* bitmap = BTranslationUtils::GetBitmapFile(fFileList->ItemAt(0));
BRect sourceFrame = bitmap->Bounds();
delete bitmap;
if (!fDestFrame.IsValid())
fDestFrame = sourceFrame.OffsetToCopy(B_ORIGIN);
BitmapMovie* movie = new BitmapMovie(fDestFrame.IntegerWidth() + 1,
fDestFrame.IntegerHeight() + 1, fColorSpace);
status_t status = movie->CreateFile(movieRef, fFileFormat, fFormat, fCodecInfo);
if (status < B_OK) {
delete movie;
DisposeData();
BMessage message(kEncodingFinished);
message.AddInt32("status", (int32)status);
fMessenger.SendMessage(&message);
return status;
}
// Bitmap and view used to convert the source bitmap
// to the correct size and depth
BBitmap* destBitmap = new BBitmap(fDestFrame, fColorSpace, true);
BView* destDrawer = new BView(fDestFrame, "drawing view", B_FOLLOW_NONE, 0);
if (destBitmap->Lock()) {
destBitmap->AddChild(destDrawer);
destBitmap->Unlock();
}
const uint32 keyFrameFrequency = 10;
// TODO: Make this tunable
BMessage progressMessage(B_UPDATE_STATUS_BAR);
progressMessage.AddFloat("delta", 1.0);
status = B_OK;
for (int32 i = 0; i < fFileList->CountItems(); i++) {
bool keyFrame = (framesWritten % keyFrameFrequency == 0);
const char* fileName = fFileList->ItemAt(i);
BBitmap* frame = BTranslationUtils::GetBitmapFile(fileName);
if (frame == NULL) {
// TODO: What to do here ? Exit with an error ?
continue;
}
// Draw scaled
if (status == B_OK) {
destBitmap->Lock();
destDrawer->DrawBitmap(frame, frame->Bounds(), destDrawer->Bounds());
destDrawer->Sync();
destBitmap->Unlock();
}
delete frame;
if (status == B_OK)
status = movie->WriteFrame(destBitmap, keyFrame);
if (status != B_OK)
break;
framesWritten++;
if (fMessenger.IsValid())
fMessenger.SendMessage(new BMessage(progressMessage));
}
delete movie;
delete destBitmap;
DisposeData();
if (fMessenger.IsValid()) {
BMessage message(kEncodingFinished);
message.AddInt32("status", (int32)status);
message.AddInt32("frames", (int32)framesWritten);
fMessenger.SendMessage(&message);
}
return status;
}
CImage::~CImage () {
DisposeData ();
}