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Originally committed to SVN as r266.

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This commit is contained in:
Rodrigo Braz Monteiro 2006-03-31 06:38:20 +00:00
parent 784ed8b82f
commit 99d7233474
3 changed files with 34 additions and 12 deletions
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30
core/subtitle_format_prs.cpp
View file

@ -73,8 +73,9 @@ void PRSSubtitleFormat::WriteFile(wxString filename,wxString encoding) {
#ifdef __WINDOWS__
// Video loaded?
VideoDisplay *display = ((AegisubApp*)wxTheApp)->frame->videoBox->videoDisplay;
if (!display->loaded) throw _T("Video not loaded!");
// Create file
// Create the PRS file
PRSFile file;
// Open two Avisynth environments
@ -82,7 +83,7 @@ void PRSSubtitleFormat::WriteFile(wxString filename,wxString encoding) {
IScriptEnvironment *env1 = avs1.GetEnv();
IScriptEnvironment *env2 = avs2.GetEnv();
// Prepare environments
// Prepare the Avisynth environments, that is, generate blank clips and hardsub into them
wxString val = wxString::Format(_T("BlankClip(pixel_type=\"RGB32\",length=%i,width=%i,height=%i,fps=%f"),display->provider->GetFrameCount(),display->provider->GetSourceWidth(),display->provider->GetSourceHeight(),display->provider->GetFPS());
AVSValue script1 = env1->Invoke("Eval",AVSValue(wxString(val + _T(",color=$000000)")).mb_str(wxConvUTF8)));
AVSValue script2 = env2->Invoke("Eval",AVSValue(wxString(val + _T(",color=$FFFFFF)")).mb_str(wxConvUTF8)));
@ -117,22 +118,32 @@ void PRSSubtitleFormat::WriteFile(wxString filename,wxString encoding) {
// Convert to PNG (the block is there to force it to dealloc bmp earlier)
int x=0,y=0;
int maxalpha=0;
int imgw,imgh;
wxMemoryOutputStream stream;
{
wxImage bmp = CalculateAlpha(frame1->GetReadPtr(),frame2->GetReadPtr(),frame1->GetRowSize(),frame1->GetHeight(),frame1->GetPitch(),&x,&y);
// Get wxImage and convert to PNG
wxImage bmp = CalculateAlpha(frame1->GetReadPtr(),frame2->GetReadPtr(),frame1->GetRowSize(),frame1->GetHeight(),frame1->GetPitch(),&x,&y,&maxalpha);
if (!bmp.Ok()) continue;
bmp.SaveFile(stream,wxBITMAP_TYPE_PNG);
//bmp.SaveFile(filename + wxString::Format(_T("%i.png"),id),wxBITMAP_TYPE_PNG);
// Get size
imgw = bmp.GetWidth();
imgh = bmp.GetHeight();
}
// Create PRSImage
PRSImage *img = new PRSImage;
img->id = id;
img->imageType = PNG_IMG;
img->w = imgw;
img->h = imgh;
img->maxAlpha = maxalpha;
img->dataLen = stream.GetSize();
img->data = new char[img->dataLen];
img->imageType = PNG_IMG;
stream.CopyTo(img->data,img->dataLen);
// Hash the PRSImage data
md5_state_t state;
md5_init(&state);
@ -295,7 +306,7 @@ std::vector<int> PRSSubtitleFormat::GetFrameRanges() {
// ------------------------------------------
// Frame 1 should have the image on a BLACK background
// Frame 2 should have the same image on a WHITE background
wxImage PRSSubtitleFormat::CalculateAlpha(const unsigned char* frame1, const unsigned char* frame2, int w, int h, int pitch, int *dstx, int *dsty) {
wxImage PRSSubtitleFormat::CalculateAlpha(const unsigned char* frame1, const unsigned char* frame2, int w, int h, int pitch, int *dstx, int *dsty, int *maxalpha) {
// Allocate image data
unsigned char *data = (unsigned char*) malloc(sizeof(unsigned char)*w*h*3);
unsigned char *alpha = (unsigned char*) malloc(sizeof(unsigned char)*w*h);
@ -313,6 +324,7 @@ wxImage PRSSubtitleFormat::CalculateAlpha(const unsigned char* frame1, const uns
int maxy = 0;
// Process
int maxA = 0;
unsigned char r1,g1,b1,r2,g2,b2;
unsigned char r,g,b,a;
for (int y=h;--y>=0;) {
@ -353,6 +365,9 @@ wxImage PRSSubtitleFormat::CalculateAlpha(const unsigned char* frame1, const uns
*(dst++) = g;
*(dst++) = b;
*(dsta++) = a;
// Store maximum alpha
if (a > maxA) maxA = a;
}
// Roll back dst
@ -360,6 +375,9 @@ wxImage PRSSubtitleFormat::CalculateAlpha(const unsigned char* frame1, const uns
dsta -= w/2;
}
// Store maximum alpha
if (maxalpha) *maxalpha = maxA;
// Calculate sizes
minx /= 4;
maxx /= 4;

2
core/subtitle_format_prs.h
View file

@ -48,7 +48,7 @@
class PRSSubtitleFormat : public SubtitleFormat {
private:
wxImage SubImageWithAlpha(wxImage src,const wxRect &area);
wxImage CalculateAlpha(const unsigned char* frame1, const unsigned char* frame2, int w, int h, int pitch, int *x=NULL, int *y=NULL);
wxImage CalculateAlpha(const unsigned char* frame1, const unsigned char* frame2, int w, int h, int pitch, int *x=NULL, int *y=NULL, int *maxalpha=NULL);
std::vector<int> GetFrameRanges();
public:

14
prs/prs_image.h
View file

@ -57,11 +57,15 @@ enum PRSImageType {
// Image class
class PRSImage : public PRSEntry {
public:
PRSImageType imageType;
unsigned __int32 id;
unsigned __int32 dataLen;
void *data;
char md5[16];
PRSImageType imageType; // Image type (PNG, BMP, etc)
unsigned __int32 id; // ID of this image
unsigned __int32 dataLen; // Length (in bytes) of the data stored in the "data" field
void *data; // Image data (e.g. raw PNG file)
// The following block of data is internal only, used for encoder optimizations
char md5[16]; // MD5 hash of "data"
int w,h; // Width and height of image
int maxAlpha; // Maximum alpha
PRSImage();
~PRSImage();