void
gst_gl_effects_xray (GstGLEffects * effects)
{
GstGLFilter *filter = GST_GL_FILTER (effects);
/* map luma to xray curve */
gst_gl_filter_render_to_target (filter, effects->intexture,
effects->midtexture[0], gst_gl_effects_xray_step_one, effects);
/* horizontal blur */
gst_gl_filter_render_to_target (filter, effects->midtexture[0],
effects->midtexture[1], gst_gl_effects_xray_step_two, effects);
/* vertical blur */
gst_gl_filter_render_to_target (filter, effects->midtexture[1],
effects->midtexture[2], gst_gl_effects_xray_step_three, effects);
/* detect edges with Sobel */
/* the old version used edges from the blurred texture, this uses
* the ones from original texture, still not sure what I like
* more. This one gives better edges obviously but behaves badly
* with noise */
/* desaturate */
gst_gl_filter_render_to_target (filter, effects->intexture,
effects->midtexture[3], gst_gl_effects_xray_desaturate, effects);
/* horizonal convolution */
gst_gl_filter_render_to_target (filter, effects->midtexture[3],
effects->midtexture[4], gst_gl_effects_xray_sobel_hconv, effects);
/* vertical convolution */
gst_gl_filter_render_to_target (filter, effects->midtexture[4],
effects->midtexture[3], gst_gl_effects_xray_sobel_vconv, effects);
/* gradient length */
gst_gl_filter_render_to_target (filter, effects->midtexture[3],
effects->midtexture[4], gst_gl_effects_xray_sobel_length, effects);
/* multiply edges with the blurred image */
gst_gl_filter_render_to_target (filter, effects->midtexture[4],
effects->outtexture, gst_gl_effects_xray_step_five, effects);
}
static gboolean
gst_gl_filterblur_filter (GstGLFilter * filter, GstGLBuffer * inbuf,
GstGLBuffer * outbuf)
{
GstGLFilterBlur *filterblur = GST_GL_FILTERBLUR (filter);
gst_gl_filter_render_to_target (filter, inbuf->texture,
filterblur->midtexture, gst_gl_filterblur_hcallback, filterblur);
gst_gl_filter_render_to_target (filter, filterblur->midtexture,
outbuf->texture, gst_gl_filterblur_vcallback, filterblur);
return TRUE;
}
static gboolean
gst_gl_overlay_filter_texture (GstGLFilter * filter, guint in_tex,
guint out_tex)
{
GstGLOverlay *overlay = GST_GL_OVERLAY (filter);
if (overlay->pbuf_has_changed && (overlay->location != NULL)) {
if ((overlay->type_file = gst_gl_overlay_load_png (filter)) == 0)
if ((overlay->type_file = gst_gl_overlay_load_jpeg (filter)) == 0)
overlay->pixbuf = NULL;
/* if loader failed then context is turned off */
gst_gl_context_thread_add (filter->context, init_pixbuf_texture, overlay);
if (overlay->pixbuf) {
free (overlay->pixbuf);
overlay->pixbuf = NULL;
}
overlay->pbuf_has_changed = FALSE;
}
gst_gl_filter_render_to_target (filter, TRUE, in_tex, out_tex,
gst_gl_overlay_callback, overlay);
return TRUE;
}
static gboolean
gst_gl_overlay_filter (GstGLFilter * filter, GstGLBuffer * inbuf,
GstGLBuffer * outbuf)
{
GstGLOverlay *overlay = GST_GL_OVERLAY (filter);
if (overlay->pbuf_has_changed && (overlay->location != NULL)) {
if (!gst_gl_overlay_loader (filter))
overlay->pixbuf = NULL;
/* if loader failed then display is turned off */
gst_gl_display_thread_add (filter->display, init_pixbuf_texture, overlay);
if (overlay->pixbuf) {
free (overlay->pixbuf);
overlay->pixbuf = NULL;
}
overlay->pbuf_has_changed = FALSE;
}
gst_gl_filter_render_to_target (filter, inbuf->texture, outbuf->texture,
gst_gl_overlay_callback, overlay);
return TRUE;
}
void
gst_gl_effects_squeeze (GstGLEffects * effects)
{
GstGLFilter *filter = GST_GL_FILTER (effects);
gst_gl_filter_render_to_target (filter, TRUE, effects->intexture,
effects->outtexture, gst_gl_effects_squeeze_callback, effects);
}
/* attach target to a FBO, use shader, pass input as "tex" uniform to
* the shader, render input to a quad */
void
gst_gl_filter_render_to_target_with_shader (GstGLFilter * filter,
gboolean resize, GLuint input, GLuint target, GstGLShader * shader)
{
filter->default_shader = shader;
gst_gl_filter_render_to_target (filter, resize, input, target,
_draw_with_shader_cb, filter);
}
void
gst_gl_effects_sobel (GstGLEffects * effects)
{
GstGLFilter *filter = GST_GL_FILTER (effects);
gst_gl_filter_render_to_target (filter, TRUE,
effects->intexture, effects->midtexture[0],
gst_gl_effects_sobel_callback_desaturate, effects);
gst_gl_filter_render_to_target (filter, FALSE,
effects->midtexture[0], effects->midtexture[1],
gst_gl_effects_sobel_callback_hconv, effects);
gst_gl_filter_render_to_target (filter, FALSE,
effects->midtexture[1], effects->midtexture[0],
gst_gl_effects_sobel_callback_vconv, effects);
gst_gl_filter_render_to_target (filter, FALSE,
effects->midtexture[0], effects->outtexture,
gst_gl_effects_sobel_callback_length, effects);
}
static gboolean
gst_gl_deinterlace_filter_texture (GstGLFilter * filter, guint in_tex,
guint out_tex)
{
GstGLDeinterlace *deinterlace_filter = GST_GL_DEINTERLACE (filter);
//blocking call, use a FBO
gst_gl_filter_render_to_target (filter, TRUE, in_tex, out_tex,
gst_gl_deinterlace_callback, deinterlace_filter);
return TRUE;
}
static gboolean
gst_gl_deinterlace_filter_texture (GstGLFilter * filter, GstGLMemory * in_tex,
GstGLMemory * out_tex)
{
GstGLDeinterlace *deinterlace_filter = GST_GL_DEINTERLACE (filter);
//blocking call, use a FBO
gst_gl_filter_render_to_target (filter, in_tex, out_tex,
deinterlace_filter->deinterlacefunc, deinterlace_filter);
return TRUE;
}
static gboolean
gst_gl_filtershader_filter_texture (GstGLFilter * filter, GstGLMemory * in_tex,
GstGLMemory * out_tex)
{
GstGLFilterShader *filtershader = GST_GL_FILTERSHADER (filter);
gst_gl_filter_render_to_target (filter, in_tex, out_tex,
gst_gl_filtershader_hcallback, NULL);
if (!filtershader->shader)
return FALSE;
return TRUE;
}
static gboolean
gst_gl_differencematte_filter (GstGLFilter * filter, GstGLBuffer * inbuf,
GstGLBuffer * outbuf)
{
GstGLDifferenceMatte *differencematte = GST_GL_DIFFERENCEMATTE (filter);
differencematte->intexture = inbuf->texture;
if (differencematte->bg_has_changed && (differencematte->location != NULL)) {
if (!gst_gl_differencematte_loader (filter))
differencematte->pixbuf = NULL;
/* if loader failed then display is turned off */
gst_gl_display_thread_add (filter->display, init_pixbuf_texture,
differencematte);
/* save current frame, needed to calculate difference between
* this frame and next ones */
gst_gl_filter_render_to_target (filter, inbuf->texture,
differencematte->savedbgtexture,
gst_gl_differencematte_save_texture, differencematte);
if (differencematte->pixbuf) {
free (differencematte->pixbuf);
differencematte->pixbuf = NULL;
}
differencematte->bg_has_changed = FALSE;
}
if (differencematte->savedbgtexture != 0) {
gst_gl_filter_render_to_target (filter,
inbuf->texture,
differencematte->midtexture[0],
gst_gl_differencematte_diff, differencematte);
gst_gl_filter_render_to_target (filter,
differencematte->midtexture[0],
differencematte->midtexture[1],
gst_gl_differencematte_hblur, differencematte);
gst_gl_filter_render_to_target (filter,
differencematte->midtexture[1],
differencematte->midtexture[2],
gst_gl_differencematte_vblur, differencematte);
gst_gl_filter_render_to_target (filter,
inbuf->texture,
outbuf->texture, gst_gl_differencematte_interp, differencematte);
} else {
gst_gl_filter_render_to_target (filter,
inbuf->texture,
outbuf->texture, gst_gl_differencematte_identity, differencematte);
}
return TRUE;
}
static gboolean
gst_gl_filtersobel_filter (GstGLFilter * filter, GstGLBuffer * inbuf,
GstGLBuffer * outbuf)
{
GstGLFilterSobel *filtersobel = GST_GL_FILTERSOBEL (filter);
gst_gl_filter_render_to_target_with_shader (filter, inbuf->texture,
filtersobel->midtexture[0], filtersobel->desat);
gst_gl_filter_render_to_target_with_shader (filter,
filtersobel->midtexture[0], filtersobel->midtexture[1],
filtersobel->hconv);
gst_gl_filter_render_to_target_with_shader (filter,
filtersobel->midtexture[1], filtersobel->midtexture[0],
filtersobel->vconv);
gst_gl_filter_render_to_target (filter, filtersobel->midtexture[0],
outbuf->texture, gst_gl_filtersobel_length, filtersobel);
return TRUE;
}
static gboolean
gst_gl_differencematte_filter_texture (GstGLFilter * filter, guint in_tex,
guint out_tex)
{
GstGLDifferenceMatte *differencematte = GST_GL_DIFFERENCEMATTE (filter);
differencematte->intexture = in_tex;
if (differencematte->bg_has_changed && (differencematte->location != NULL)) {
if (!gst_gl_differencematte_loader (filter))
differencematte->pixbuf = NULL;
/* if loader failed then context is turned off */
gst_gl_context_thread_add (GST_GL_BASE_FILTER (filter)->context,
init_pixbuf_texture, differencematte);
/* save current frame, needed to calculate difference between
* this frame and next ones */
gst_gl_filter_render_to_target (filter, TRUE, in_tex,
differencematte->savedbgtexture,
gst_gl_differencematte_identity, differencematte);
if (differencematte->pixbuf) {
free (differencematte->pixbuf);
differencematte->pixbuf = NULL;
}
differencematte->bg_has_changed = FALSE;
}
if (differencematte->savedbgtexture != 0) {
gst_gl_filter_render_to_target (filter, TRUE, in_tex,
differencematte->midtexture[0], gst_gl_differencematte_diff,
differencematte);
gst_gl_filter_render_to_target (filter, FALSE,
differencematte->midtexture[0], differencematte->midtexture[1],
gst_gl_differencematte_hblur, differencematte);
gst_gl_filter_render_to_target (filter, FALSE,
differencematte->midtexture[1], differencematte->midtexture[2],
gst_gl_differencematte_vblur, differencematte);
gst_gl_filter_render_to_target (filter, TRUE, in_tex, out_tex,
gst_gl_differencematte_interp, differencematte);
} else {
gst_gl_filter_render_to_target (filter, TRUE, in_tex, out_tex,
gst_gl_differencematte_identity, differencematte);
}
return TRUE;
}
static gboolean
gst_gl_colorscale_filter_texture (GstGLFilter * filter, guint in_tex,
guint out_tex)
{
GstGLColorscale *colorscale;
colorscale = GST_GL_COLORSCALE (filter);
if (gst_gl_context_get_gl_api (GST_GL_BASE_FILTER (filter)->context) &
(GST_GL_API_GLES2 | GST_GL_API_OPENGL3))
gst_gl_filter_render_to_target_with_shader (filter, TRUE, in_tex, out_tex,
colorscale->shader);
if (gst_gl_context_get_gl_api (GST_GL_BASE_FILTER (filter)->context) &
GST_GL_API_OPENGL)
gst_gl_filter_render_to_target (filter, TRUE, in_tex, out_tex,
gst_gl_colorscale_callback, colorscale);
return TRUE;
}
static gboolean
gst_gl_colorscale_filter_texture (GstGLFilter * filter, guint in_tex,
guint out_tex)
{
GstGLColorscale *colorscale;
colorscale = GST_GL_COLORSCALE (filter);
#if GST_GL_HAVE_GLES2
if (gst_gl_context_get_gl_api (filter->context) & GST_GL_API_GLES2)
gst_gl_filter_render_to_target_with_shader (filter, TRUE, in_tex, out_tex,
colorscale->shader);
#endif
#if GST_GL_HAVE_OPENGL
if (gst_gl_context_get_gl_api (filter->context) & GST_GL_API_OPENGL)
gst_gl_filter_render_to_target (filter, TRUE, in_tex, out_tex,
gst_gl_colorscale_callback, colorscale);
#endif
return TRUE;
}
