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generic-pc: add Pig function to cVideo / GLFB

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Stefan Seyfried
2013-05-27 00:47:35 +02:00
parent 9593fe09cf
commit 05ac116312
3 changed files with 39 additions and 3 deletions
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27
generic-pc/glfb.cpp
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@@ -417,7 +417,7 @@ void GLFramebuffer::render()
glBindTexture(GL_TEXTURE_2D, mState.displaytex);
drawSquare(zoom, xscale);
glBindTexture(GL_TEXTURE_2D, mState.osdtex);
drawSquare(1.0);
drawSquare(1.0, -100);
glFlush();
glutSwapBuffers();
@@ -472,6 +472,31 @@ void GLFramebuffer::drawSquare(float size, float x_factor)
0.0, 1.0,
1.0, 1.0,
};
if (x_factor > -99.0) { /* x_factor == -100 => OSD */
if (videoDecoder &&
videoDecoder->pig_x > 0 && videoDecoder->pig_y > 0 &&
videoDecoder->pig_w > 0 && videoDecoder->pig_h > 0) {
/* these calculations even consider cropping and panscan mode
* maybe this could be done with some clever opengl tricks? */
double w2 = (double)mState.width * 0.5l;
double h2 = (double)mState.height * 0.5l;
double x = (double)(videoDecoder->pig_x - w2) / w2 / x_factor / size;
double y = (double)(h2 - videoDecoder->pig_y) / h2 / size;
double w = (double)videoDecoder->pig_w / w2;
double h = (double)videoDecoder->pig_h / h2;
x += ((1.0l - x_factor * size) / 2.0l) * w / x_factor / size;
y += ((size - 1.0l) / 2.0l) * h / size;
vertices[0] = x + w; /* top right x */
vertices[1] = y; /* top right y */
vertices[2] = x; /* top left x */
vertices[3] = y; /* top left y */
vertices[4] = x; /* bottom left x */
vertices[5] = y - h; /* bottom left y */
vertices[6] = vertices[0]; /* bottom right x */
vertices[7] = vertices[5]; /* bottom right y */
}
} else
x_factor = 1.0; /* OSD */
glPushMatrix();
glScalef(size * x_factor, size, size);