void LLViewerMediaImpl::update()
{
LLPluginClassMedia* plugin = getMediaPlugin();
if (!plugin)
{
return;
}
plugin->idle();
if (plugin->isPluginExited())
{
destroyMediaSource();
return;
}
if (!plugin->textureValid())
{
return;
}
if(mSuspendUpdates || !mVisible)
{
return;
}
LLViewerTexture* placeholder_image = updatePlaceholderImage();
if(placeholder_image)
{
LLRect dirty_rect;
if (plugin->getDirty(&dirty_rect))
{
// Constrain the dirty rect to be inside the texture
S32 x_pos = llmax(dirty_rect.mLeft, 0);
S32 y_pos = llmax(dirty_rect.mBottom, 0);
S32 width = llmin(dirty_rect.mRight, placeholder_image->getWidth()) - x_pos;
S32 height = llmin(dirty_rect.mTop, placeholder_image->getHeight()) - y_pos;
if(width > 0 && height > 0)
{
U8* data = plugin->getBitsData();
// Offset the pixels pointer to match x_pos and y_pos
data += ( x_pos * plugin->getTextureDepth() * plugin->getBitsWidth() );
data += ( y_pos * plugin->getTextureDepth() );
placeholder_image->setSubImage(
data,
plugin->getBitsWidth(),
plugin->getBitsHeight(),
x_pos,
y_pos,
width,
height,
TRUE); // force a fast update (i.e. don't call analyzeAlpha, etc.)
}
plugin->resetDirty();
}
}
}
void display()
{
mMediaSource->idle();
// Check whether the texture needs to be recreated.
if(mMediaSource->textureValid())
{
if(
(mAppTextureWidth != mMediaSource->getTextureWidth() || mAppTextureHeight != mMediaSource->getTextureHeight()) &&
(mAppWindowWidth == mMediaSource->getWidth() && mAppWindowHeight == mMediaSource->getHeight())
)
{
// Attempt to (re)create the texture
createTexture();
}
}
// clear screen
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glLoadIdentity();
if(mAppTexture != 0)
{
// use the browser texture
glBindTexture( GL_TEXTURE_2D, mAppTexture );
// If dirty, update the texture.
LLRect dirtyRect;
if(!mMediaSource->textureValid())
{
// LL_DEBUGS("media_plugin_test") << "Resize in progress, skipping update..." << LL_ENDL;
}
else if(mAppWindowWidth != mMediaSource->getWidth() || mAppWindowHeight != mMediaSource->getHeight())
{
// A resize is in progress. Just wait for it...
}
else if(mMediaSource->getDirty(&dirtyRect))
{
// grab the page
const unsigned char* pixels = mMediaSource->getBitsData();
if ( pixels )
{
// write them into the texture
// Paranoia: intersect dirtyRect with (0, 0, mAppTextureWidth, mAppTextureHeight)?
int x_offset = dirtyRect.mLeft;
int y_offset = dirtyRect.mBottom;
int width = dirtyRect.mRight - dirtyRect.mLeft;
int height = dirtyRect.mTop - dirtyRect.mBottom;
LL_DEBUGS("media_plugin_test") << "Updating, dirty rect is ("
<< dirtyRect.mLeft << ", "
<< dirtyRect.mTop << ", "
<< dirtyRect.mRight << ", "
<< dirtyRect.mBottom << "), update params are: ("
<< x_offset << ", "
<< y_offset << ", "
<< width << ", "
<< height << ")"
<< LL_ENDL;
// Offset the pixels pointer properly
pixels += (y_offset * mMediaSource->getTextureDepth() * mMediaSource->getTextureWidth());
pixels += (x_offset * mMediaSource->getTextureDepth());
glPixelStorei(GL_UNPACK_ROW_LENGTH, mMediaSource->getTextureWidth());
glTexSubImage2D( GL_TEXTURE_2D, 0,
x_offset,
y_offset,
width,
height,
mMediaSource->getTextureFormatPrimary(),
mMediaSource->getTextureFormatType(),
pixels );
mMediaSource->resetDirty();
}
}
// scale the texture so that it fits the screen
GLdouble media_texture_x = mAppWindowWidth / (double)mAppTextureWidth;
GLdouble media_texture_y = mAppWindowHeight / (double)mAppTextureHeight;
// draw the single quad full screen (orthographic)
glEnable( GL_TEXTURE_2D );
glColor3f( 1.0f, 1.0f, 1.0f );
glBegin( GL_QUADS );
if(mAppTextureCoordsOpenGL)
{
// Render the texture as per opengl coords (where 0,0 is at the lower left)
glTexCoord2d( 0, 0 );
glVertex2d( 0, 0 );
glTexCoord2d( 0 , media_texture_y );
glVertex2d( 0, mAppWindowHeight);
glTexCoord2d( media_texture_x, media_texture_y );
glVertex2d( mAppWindowWidth , mAppWindowHeight);
glTexCoord2d( media_texture_x, 0 );
glVertex2d( mAppWindowWidth, 0 );
}
else
{
// Render the texture the "other way round" (where 0,0 is at the upper left)
glTexCoord2d( 0, media_texture_y );
glVertex2d( 0, 0 );
glTexCoord2d( 0 , 0 );
glVertex2d( 0, mAppWindowHeight);
glTexCoord2d( media_texture_x, 0 );
glVertex2d( mAppWindowWidth , mAppWindowHeight);
glTexCoord2d( media_texture_x, media_texture_y );
glVertex2d( mAppWindowWidth, 0 );
}
glEnd();
}
glutSwapBuffers();
};