static void
init_pixbuf_texture (GstGLContext * context, gpointer data)
{
GstGLDifferenceMatte *differencematte = GST_GL_DIFFERENCEMATTE (data);
GstGLFilter *filter = GST_GL_FILTER (data);
GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
gl->DeleteTextures (1, &differencematte->newbgtexture);
gl->GenTextures (1, &differencematte->newbgtexture);
gl->BindTexture (GL_TEXTURE_2D, differencematte->newbgtexture);
gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA,
(gint) differencematte->pbuf_width, (gint) differencematte->pbuf_height,
0, GL_RGBA, GL_UNSIGNED_BYTE, differencematte->pixbuf);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
if (differencematte->savedbgtexture == 0) {
gl->GenTextures (1, &differencematte->savedbgtexture);
gl->BindTexture (GL_TEXTURE_2D, differencematte->savedbgtexture);
gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8,
GST_VIDEO_INFO_WIDTH (&filter->out_info),
GST_VIDEO_INFO_HEIGHT (&filter->out_info),
0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
}
/* init resources that need a gl context */
static void
gst_gl_effects_init_gl_resources (GstGLFilter * filter)
{
GstGLEffects *effects = GST_GL_EFFECTS (filter);
GstGLFuncs *gl = filter->context->gl_vtable;
gint i = 0;
for (i = 0; i < NEEDED_TEXTURES; i++) {
gl->GenTextures (1, &effects->midtexture[i]);
gl->BindTexture (GL_TEXTURE_2D, effects->midtexture[i]);
gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8,
GST_VIDEO_INFO_WIDTH (&filter->out_info),
GST_VIDEO_INFO_HEIGHT (&filter->out_info),
0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
}
void
gst_gl_effects_luma_to_curve (GstGLEffects * effects,
GstGLEffectsCurve curve,
gint curve_index, gint width, gint height, GLuint texture)
{
GstGLShader *shader;
GstGLFilter *filter = GST_GL_FILTER (effects);
GstGLContext *context = filter->context;
GstGLFuncs *gl = context->gl_vtable;
shader = g_hash_table_lookup (effects->shaderstable, "lumamap0");
if (!shader) {
shader = gst_gl_shader_new (context);
g_hash_table_insert (effects->shaderstable, "lumamap0", shader);
}
if (!gst_gl_shader_compile_and_check (shader,
luma_to_curve_fragment_source, GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_context_set_error (context,
"Failed to initialize luma to curve shader");
GST_ELEMENT_ERROR (effects, RESOURCE, NOT_FOUND,
("%s", gst_gl_context_get_error ()), (NULL));
return;
}
gl->MatrixMode (GL_PROJECTION);
gl->LoadIdentity ();
gst_gl_shader_use (shader);
if (effects->curve[curve_index] == 0) {
/* this parameters are needed to have a right, predictable, mapping */
gl->GenTextures (1, &effects->curve[curve_index]);
gl->Enable (GL_TEXTURE_1D);
gl->BindTexture (GL_TEXTURE_1D, effects->curve[curve_index]);
gl->TexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
gl->TexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
gl->TexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP);
gl->TexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_T, GL_CLAMP);
gl->TexImage1D (GL_TEXTURE_1D, 0, curve.bytes_per_pixel,
curve.width, 0, GL_RGB, GL_UNSIGNED_BYTE, curve.pixel_data);
gl->Disable (GL_TEXTURE_1D);
}
gl->ActiveTexture (GL_TEXTURE2);
gl->Enable (GL_TEXTURE_2D);
gl->BindTexture (GL_TEXTURE_2D, texture);
gst_gl_shader_set_uniform_1i (shader, "tex", 2);
gl->Disable (GL_TEXTURE_2D);
gl->ActiveTexture (GL_TEXTURE1);
gl->Enable (GL_TEXTURE_1D);
gl->BindTexture (GL_TEXTURE_1D, effects->curve[curve_index]);
gst_gl_shader_set_uniform_1i (shader, "curve", 1);
gl->Disable (GL_TEXTURE_1D);
gst_gl_filter_draw_texture (filter, texture, width, height);
}
static gboolean
_2d_texture_renderer_init_fbo (GstAmc2DTextureRenderer * renderer)
{
GstGLFuncs *gl;
GLuint fake_texture = 0;
guint out_width, out_height;
out_width = GST_VIDEO_INFO_WIDTH (&renderer->info);
out_height = GST_VIDEO_INFO_HEIGHT (&renderer->info);
gl = renderer->context->gl_vtable;
if (!gl->GenFramebuffers) {
/* turn off the pipeline because Frame buffer object is a not present */
gst_gl_context_set_error (renderer->context,
"Context, EXT_framebuffer_object supported: no");
return FALSE;
}
GST_INFO ("Context, EXT_framebuffer_object supported: yes");
/* setup FBO */
gl->GenFramebuffers (1, &renderer->fbo);
gl->BindFramebuffer (GL_FRAMEBUFFER, renderer->fbo);
/* setup the render buffer for depth */
gl->GenRenderbuffers (1, &renderer->depth_buffer);
gl->BindRenderbuffer (GL_RENDERBUFFER, renderer->depth_buffer);
gl->RenderbufferStorage (GL_RENDERBUFFER, GL_DEPTH_COMPONENT16,
out_width, out_height);
/* a fake texture is attached to the render FBO (cannot init without it) */
gl->GenTextures (1, &fake_texture);
gl->BindTexture (GL_TEXTURE_2D, fake_texture);
gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, out_width, out_height,
0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
/* attach the texture to the FBO to renderer to */
gl->FramebufferTexture2D (GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, fake_texture, 0);
/* attach the depth render buffer to the FBO */
gl->FramebufferRenderbuffer (GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT,
GL_RENDERBUFFER, renderer->depth_buffer);
if (!gst_gl_context_check_framebuffer_status (renderer->context)) {
gst_gl_context_set_error (renderer->context,
"GL framebuffer status incomplete");
return FALSE;
}
/* unbind the FBO */
gl->BindFramebuffer (GL_FRAMEBUFFER, 0);
gl->DeleteTextures (1, &fake_texture);
return TRUE;
}
