static void
gst_gl_effects_sobel_callback_vconv (gint width, gint height, guint texture,
gpointer data)
{
GstGLShader *shader = NULL;
GstGLEffects *effects = GST_GL_EFFECTS (data);
GstGLFilter *filter = GST_GL_FILTER (effects);
if (NULL != (shader = gst_gl_effects_get_fragment_shader (effects, "vconv0",
sep_sobel_vconv3_fragment_source_gles2,
sep_sobel_vconv3_fragment_source_opengl))) {
GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
#if GST_GL_HAVE_OPENGL
if (USING_OPENGL (GST_GL_BASE_FILTER (filter)->context)) {
gl->MatrixMode (GL_PROJECTION);
gl->LoadIdentity ();
}
#endif
gst_gl_shader_use (shader);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, texture);
gst_gl_shader_set_uniform_1i (shader, "tex", 0);
gst_gl_shader_set_uniform_1f (shader, "height", height);
gst_gl_filter_draw_texture (filter, texture, width, height);
}
}
//opengl scene, params: input texture (not the output filter->texture)
static void
gst_gl_filter_glass_callback (gpointer stuff)
{
static gint64 start_time = 0;
gfloat rotation;
GstGLFilter *filter = GST_GL_FILTER (stuff);
GstGLFilterGlass *glass_filter = GST_GL_FILTER_GLASS (stuff);
GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
gint width = GST_VIDEO_INFO_WIDTH (&filter->out_info);
gint height = GST_VIDEO_INFO_HEIGHT (&filter->out_info);
guint texture = glass_filter->in_tex;
if (start_time == 0)
start_time = get_time ();
else {
gint64 time_left =
(glass_filter->timestamp / 1000) - (get_time () - start_time);
time_left -= 1000000 / 25;
if (time_left > 2000) {
GST_LOG ("escape");
return;
}
}
gst_gl_shader_use (glass_filter->passthrough_shader);
gst_gl_filter_glass_draw_background_gradient (glass_filter);
//Rotation
if (start_time != 0) {
gint64 time_passed = get_time () - start_time;
rotation = sin (time_passed / 1200000.0) * 45.0f;
} else {
rotation = 0.0f;
}
gl->Enable (GL_BLEND);
gl->BlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gst_gl_shader_use (glass_filter->shader);
//Reflection
gst_gl_filter_glass_draw_video_plane (filter, width, height, texture,
0.0f, 2.0f, 0.3f, 0.0f, TRUE, rotation);
//Main video
gst_gl_filter_glass_draw_video_plane (filter, width, height, texture,
0.0f, 0.0f, 1.0f, 1.0f, FALSE, rotation);
gst_gl_context_clear_shader (GST_GL_BASE_FILTER (filter)->context);
gl->Disable (GL_BLEND);
}
static void
gst_gl_transformation_reset_gl (GstGLFilter * filter)
{
GstGLTransformation *transformation = GST_GL_TRANSFORMATION (filter);
const GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
if (transformation->vao) {
gl->DeleteVertexArrays (1, &transformation->vao);
transformation->vao = 0;
}
if (transformation->vertex_buffer) {
gl->DeleteBuffers (1, &transformation->vertex_buffer);
transformation->vertex_buffer = 0;
}
if (transformation->vbo_indices) {
gl->DeleteBuffers (1, &transformation->vbo_indices);
transformation->vbo_indices = 0;
}
if (transformation->shader) {
gst_object_unref (transformation->shader);
transformation->shader = NULL;
}
}
static void
gst_gl_differencematte_interp (gint width, gint height, guint texture,
gpointer stuff)
{
GstGLDifferenceMatte *differencematte = GST_GL_DIFFERENCEMATTE (stuff);
GstGLFilter *filter = GST_GL_FILTER (stuff);
GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
gst_gl_shader_use (differencematte->shader[3]);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, texture);
gst_gl_shader_set_uniform_1i (differencematte->shader[3], "blend", 0);
gl->ActiveTexture (GL_TEXTURE1);
gl->BindTexture (GL_TEXTURE_2D, differencematte->newbgtexture);
gst_gl_shader_set_uniform_1i (differencematte->shader[3], "base", 1);
gl->ActiveTexture (GL_TEXTURE2);
gl->BindTexture (GL_TEXTURE_2D, differencematte->midtexture[2]);
gst_gl_shader_set_uniform_1i (differencematte->shader[3], "alpha", 2);
gst_gl_filter_draw_texture (filter, texture, width, height);
}
/* free resources that need a gl context */
static void
gst_gl_differencematte_reset_gl_resources (GstGLFilter * filter)
{
GstGLDifferenceMatte *differencematte = GST_GL_DIFFERENCEMATTE (filter);
GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
gint i;
gl->DeleteTextures (1, &differencematte->savedbgtexture);
gl->DeleteTextures (1, &differencematte->newbgtexture);
for (i = 0; i < 4; i++) {
if (differencematte->identity_shader) {
gst_object_unref (differencematte->identity_shader);
differencematte->identity_shader = NULL;
}
if (differencematte->shader[i]) {
gst_object_unref (differencematte->shader[i]);
differencematte->shader[i] = NULL;
}
if (differencematte->midtexture[i]) {
gl->DeleteTextures (1, &differencematte->midtexture[i]);
differencematte->midtexture[i] = 0;
}
}
differencematte->location = NULL;
differencematte->pixbuf = NULL;
differencematte->savedbgtexture = 0;
differencematte->newbgtexture = 0;
differencematte->bg_has_changed = FALSE;
}
static void
gst_gl_differencematte_diff (gint width, gint height, guint texture,
gpointer stuff)
{
GstGLDifferenceMatte *differencematte = GST_GL_DIFFERENCEMATTE (stuff);
GstGLFilter *filter = GST_GL_FILTER (stuff);
GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
gl->MatrixMode (GL_PROJECTION);
gl->LoadIdentity ();
gst_gl_shader_use (differencematte->shader[0]);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, texture);
gst_gl_shader_set_uniform_1i (differencematte->shader[0], "current", 0);
gl->ActiveTexture (GL_TEXTURE1);
gl->BindTexture (GL_TEXTURE_2D, differencematte->savedbgtexture);
gst_gl_shader_set_uniform_1i (differencematte->shader[0], "saved", 1);
gst_gl_filter_draw_texture (filter, texture, width, height);
}
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);
}
}
static GstFlowReturn
gst_gl_view_convert_element_submit_input_buffer (GstBaseTransform * trans,
gboolean is_discont, GstBuffer * input)
{
GstGLContext *context = GST_GL_BASE_FILTER (trans)->context;
GstGLViewConvertElement *viewconvert_filter =
GST_GL_VIEW_CONVERT_ELEMENT (trans);
GstFlowReturn ret;
ret =
GST_BASE_TRANSFORM_CLASS (parent_class)->submit_input_buffer (trans,
is_discont, input);
if (ret != GST_FLOW_OK || trans->queued_buf == NULL)
return ret;
gst_gl_view_convert_set_context (viewconvert_filter->viewconvert, context);
/* Takes the ref to the input buffer */
ret =
gst_gl_view_convert_submit_input_buffer (viewconvert_filter->viewconvert,
is_discont, input);
trans->queued_buf = NULL;
return ret;
}
static void
gst_gl_effects_twirl_callback (gint width, gint height, guint texture,
gpointer data)
{
GstGLShader *shader;
GstGLEffects *effects = GST_GL_EFFECTS (data);
GstGLFilter *filter = GST_GL_FILTER (effects);
GstGLContext *context = GST_GL_BASE_FILTER (filter)->context;
GstGLFuncs *gl = context->gl_vtable;
shader = gst_gl_effects_get_fragment_shader (effects, "twirl",
twirl_fragment_source_gles2);
if (!shader)
return;
#if GST_GL_HAVE_OPENGL
if (USING_OPENGL (context)) {
gl->MatrixMode (GL_PROJECTION);
gl->LoadIdentity ();
}
#endif
gst_gl_shader_use (shader);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, texture);
gst_gl_shader_set_uniform_1i (shader, "tex", 0);
gst_gl_filter_draw_texture (filter, texture, width, height);
}
static void
_bind_buffer (GstGLFilterCube * cube_filter)
{
const GstGLFuncs *gl = GST_GL_BASE_FILTER (cube_filter)->context->gl_vtable;
gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, cube_filter->vbo_indices);
gl->BindBuffer (GL_ARRAY_BUFFER, cube_filter->vertex_buffer);
cube_filter->attr_position =
gst_gl_shader_get_attribute_location (cube_filter->shader, "a_position");
cube_filter->attr_texture =
gst_gl_shader_get_attribute_location (cube_filter->shader, "a_texcoord");
/* Load the vertex position */
gl->VertexAttribPointer (cube_filter->attr_position, 3, GL_FLOAT, GL_FALSE,
5 * sizeof (GLfloat), (void *) 0);
/* Load the texture coordinate */
gl->VertexAttribPointer (cube_filter->attr_texture, 2, GL_FLOAT, GL_FALSE,
5 * sizeof (GLfloat), (void *) (3 * sizeof (GLfloat)));
gl->EnableVertexAttribArray (cube_filter->attr_position);
gl->EnableVertexAttribArray (cube_filter->attr_texture);
}
static GstGLShader *
gst_gl_deinterlace_get_fragment_shader (GstGLFilter * filter,
const gchar * shader_name, const gchar * shader_source)
{
GstGLShader *shader = NULL;
GstGLDeinterlace *deinterlace_filter = GST_GL_DEINTERLACE (filter);
GstGLContext *context = GST_GL_BASE_FILTER (filter)->context;
shader = g_hash_table_lookup (deinterlace_filter->shaderstable, shader_name);
if (!shader) {
GError *error = NULL;
if (!(shader = gst_gl_shader_new_link_with_stages (context, &error,
gst_glsl_stage_new_default_vertex (context),
gst_glsl_stage_new_with_string (context, GL_FRAGMENT_SHADER,
GST_GLSL_VERSION_NONE,
GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY,
shader_source), NULL))) {
GST_ELEMENT_ERROR (deinterlace_filter, RESOURCE, NOT_FOUND,
("Failed to initialize %s shader", shader_name), (NULL));
}
filter->draw_attr_position_loc =
gst_gl_shader_get_attribute_location (shader, "a_position");
filter->draw_attr_texture_loc =
gst_gl_shader_get_attribute_location (shader, "a_texcoord");
}
g_hash_table_insert (deinterlace_filter->shaderstable, (gchar *) shader_name,
shader);
return shader;
}
static gboolean
gst_gl_filter_glass_reset (GstBaseTransform * trans)
{
GstGLFilterGlass *glass_filter = GST_GL_FILTER_GLASS (trans);
//blocking call, wait the opengl thread has destroyed the shader
if (glass_filter->shader)
gst_gl_context_del_shader (GST_GL_BASE_FILTER (trans)->context,
glass_filter->shader);
glass_filter->shader = NULL;
if (glass_filter->passthrough_shader)
gst_gl_context_del_shader (GST_GL_BASE_FILTER (trans)->context,
glass_filter->passthrough_shader);
glass_filter->passthrough_shader = NULL;
return GST_BASE_TRANSFORM_CLASS (parent_class)->stop (trans);
}
static gboolean
gst_gl_transformation_init_shader (GstGLFilter * filter)
{
GstGLTransformation *transformation = GST_GL_TRANSFORMATION (filter);
if (transformation->shader) {
gst_object_unref (transformation->shader);
transformation->shader = NULL;
}
if (gst_gl_context_get_gl_api (GST_GL_BASE_FILTER (filter)->context)) {
/* blocking call, wait until the opengl thread has compiled the shader */
return gst_gl_context_gen_shader (GST_GL_BASE_FILTER (filter)->context,
cube_v_src, cube_f_src, &transformation->shader);
}
return TRUE;
}
static gboolean
gst_gl_filter_cube_gl_start (GstGLBaseFilter * filter)
{
GstGLFilterCube *cube_filter = GST_GL_FILTER_CUBE (filter);
/* blocking call, wait the opengl thread has compiled the shader */
return gst_gl_context_gen_shader (GST_GL_BASE_FILTER (filter)->context,
cube_v_src, cube_f_src, &cube_filter->shader);
}
static void
gst_gl_colorscale_callback (gint width, gint height, guint texture,
gpointer stuff)
{
GstGLFilter *filter = GST_GL_FILTER (stuff);
#if GST_GL_HAVE_OPENGL
if (gst_gl_context_get_gl_api (GST_GL_BASE_FILTER (filter)->context) &
GST_GL_API_OPENGL) {
const GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
gl->MatrixMode (GL_PROJECTION);
gl->LoadIdentity ();
}
#endif
gst_gl_filter_draw_texture (filter, texture, width, height);
}
static gboolean
gst_gl_filter_glass_init_shader (GstGLFilter * filter)
{
gboolean ret;
GstGLFilterGlass *glass_filter = GST_GL_FILTER_GLASS (filter);
//blocking call, wait the opengl thread has compiled the shader
ret =
gst_gl_context_gen_shader (GST_GL_BASE_FILTER (filter)->context,
glass_vertex_source, glass_fragment_source, &glass_filter->shader);
if (ret)
ret =
gst_gl_context_gen_shader (GST_GL_BASE_FILTER (filter)->context,
passthrough_vertex, passthrough_fragment,
&glass_filter->passthrough_shader);
return ret;
}
static gboolean
gst_gl_deinterlace_init_shader (GstGLFilter * filter)
{
GstGLDeinterlace *deinterlace_filter = GST_GL_DEINTERLACE (filter);
//blocking call, wait the opengl thread has compiled the shader
return gst_gl_context_gen_shader (GST_GL_BASE_FILTER (filter)->context, 0,
greedyh_fragment_source, &deinterlace_filter->shader);
}
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 void
_unbind_buffer (GstGLFilterCube * cube_filter)
{
const GstGLFuncs *gl = GST_GL_BASE_FILTER (cube_filter)->context->gl_vtable;
gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
gl->BindBuffer (GL_ARRAY_BUFFER, 0);
gl->DisableVertexAttribArray (cube_filter->attr_position);
gl->DisableVertexAttribArray (cube_filter->attr_texture);
}
static void
_unbind_buffer (GstGLTransformation * transformation)
{
const GstGLFuncs *gl =
GST_GL_BASE_FILTER (transformation)->context->gl_vtable;
gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
gl->BindBuffer (GL_ARRAY_BUFFER, 0);
gl->DisableVertexAttribArray (transformation->attr_position);
gl->DisableVertexAttribArray (transformation->attr_texture);
}
static gboolean
gst_gl_colorscale_gen_gl_resources (GstGLFilter * filter)
{
GstGLColorscale *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_context_thread_add (GST_GL_BASE_FILTER (filter)->context,
(GstGLContextThreadFunc) _compile_identity_shader, colorscale);
if (!colorscale->shader) {
gst_gl_context_set_error (GST_GL_BASE_FILTER (filter)->context,
"Failed to initialize identity shader");
GST_ELEMENT_ERROR (colorscale, RESOURCE, NOT_FOUND, ("%s",
gst_gl_context_get_error ()), (NULL));
return FALSE;
}
}
return TRUE;
}
static gboolean
gst_gl_colorscale_filter_texture (GstGLFilter * filter, GstGLMemory * in_tex,
GstGLMemory * out_tex)
{
GstGLColorscale *colorscale = GST_GL_COLORSCALE (filter);
if (gst_gl_context_get_gl_api (GST_GL_BASE_FILTER (filter)->context))
gst_gl_filter_render_to_target_with_shader (filter, in_tex, out_tex,
colorscale->shader);
return TRUE;
}
static void
gst_gl_differencematte_save_texture (gint width, gint height, guint texture,
gpointer stuff)
{
GstGLFilter *filter = GST_GL_FILTER (stuff);
GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
gl->MatrixMode (GL_PROJECTION);
gl->LoadIdentity ();
gst_gl_filter_draw_texture (filter, texture, width, height);
}
static gboolean
gst_gl_deinterlace_greedyh_callback (GstGLFilter * filter, GstGLMemory * in_tex,
gpointer user_data)
{
GstGLShader *shader;
GstGLDeinterlace *deinterlace_filter = GST_GL_DEINTERLACE (filter);
GstGLContext *context = GST_GL_BASE_FILTER (filter)->context;
GstGLFuncs *gl = context->gl_vtable;
shader =
gst_gl_deinterlace_get_fragment_shader (filter, "greedhy",
greedyh_fragment_source);
if (!shader)
return FALSE;
#if GST_GL_HAVE_OPENGL
if (USING_OPENGL (context)) {
gl->MatrixMode (GL_PROJECTION);
gl->LoadIdentity ();
}
#endif
gst_gl_shader_use (shader);
if (G_LIKELY (deinterlace_filter->prev_tex != NULL)) {
gl->ActiveTexture (GL_TEXTURE1);
gst_gl_shader_set_uniform_1i (shader, "tex_prev", 1);
gl->BindTexture (GL_TEXTURE_2D,
gst_gl_memory_get_texture_id (deinterlace_filter->prev_tex));
}
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, gst_gl_memory_get_texture_id (in_tex));
gst_gl_shader_set_uniform_1i (shader, "tex", 0);
gst_gl_shader_set_uniform_1f (shader, "max_comb", 5.0f / 255.0f);
gst_gl_shader_set_uniform_1f (shader, "motion_threshold", 25.0f / 255.0f);
gst_gl_shader_set_uniform_1f (shader, "motion_sense", 30.0f / 255.0f);
gst_gl_shader_set_uniform_1f (shader, "width",
GST_VIDEO_INFO_WIDTH (&filter->out_info));
gst_gl_shader_set_uniform_1f (shader, "height",
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
gst_gl_filter_draw_fullscreen_quad (filter);
/* we keep the previous buffer around so this is safe */
deinterlace_filter->prev_tex = in_tex;
return TRUE;
}
static gboolean
gst_gl_colorscale_del_gl_resources (GstBaseTransform * trans)
{
GstGLColorscale *colorscale = GST_GL_COLORSCALE (trans);
if (colorscale->shader) {
gst_gl_context_del_shader (GST_GL_BASE_FILTER (trans)->context,
colorscale->shader);
colorscale->shader = NULL;
}
return GST_BASE_TRANSFORM_CLASS (parent_class)->stop (trans);
}
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 void
gst_gl_filter_glass_draw_video_plane (GstGLFilter * filter,
gint width, gint height, guint texture,
gfloat center_x, gfloat center_y,
gfloat start_alpha, gfloat stop_alpha, gboolean reversed, gfloat rotation)
{
GstGLFilterGlass *glass_filter = GST_GL_FILTER_GLASS (filter);
GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
gfloat topy = reversed ? center_y - 1.0f : center_y + 1.0f;
gfloat bottomy = reversed ? center_y + 1.0f : center_y - 1.0f;
/* *INDENT-OFF* */
gfloat mesh[] = {
/*| Vertex |TexCoord0| Colour |*/
center_x-1.6, topy, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0, start_alpha,
center_x+1.6, topy, 0.0, 1.0, 1.0, 1.0, 1.0, 1.0, start_alpha,
center_x+1.6, bottomy, 0.0, 1.0, 0.0, 1.0, 1.0, 1.0, stop_alpha,
center_x-1.6, bottomy, 0.0, 0.0, 0.0, 1.0, 1.0, 1.0, stop_alpha,
};
/* *INDENT-ON* */
GLushort indices[] = {
0, 1, 2,
0, 2, 3
};
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, texture);
gst_gl_shader_set_uniform_1i (glass_filter->shader, "tex", 0);
gst_gl_shader_set_uniform_1f (glass_filter->shader, "yrot", rotation);
gst_gl_shader_set_uniform_1f (glass_filter->shader, "aspect",
(gfloat) width / (gfloat) height);
gl->ClientActiveTexture (GL_TEXTURE0);
gl->EnableClientState (GL_TEXTURE_COORD_ARRAY);
gl->EnableClientState (GL_VERTEX_ARRAY);
gl->EnableClientState (GL_COLOR_ARRAY);
gl->VertexPointer (3, GL_FLOAT, 9 * sizeof (gfloat), mesh);
gl->TexCoordPointer (2, GL_FLOAT, 9 * sizeof (gfloat), &mesh[3]);
gl->ColorPointer (4, GL_FLOAT, 9 * sizeof (gfloat), &mesh[5]);
gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
gl->DisableClientState (GL_TEXTURE_COORD_ARRAY);
gl->DisableClientState (GL_VERTEX_ARRAY);
gl->DisableClientState (GL_COLOR_ARRAY);
}
static gboolean
gst_gl_transformation_stop (GstBaseTransform * trans)
{
GstGLBaseFilter *basefilter = GST_GL_BASE_FILTER (trans);
GstGLTransformation *transformation = GST_GL_TRANSFORMATION (trans);
/* blocking call, wait until the opengl thread has destroyed the shader */
if (basefilter->context && transformation->shader) {
gst_gl_context_del_shader (basefilter->context, transformation->shader);
transformation->shader = NULL;
}
return GST_BASE_TRANSFORM_CLASS (parent_class)->stop (trans);
}
static gboolean
gst_gl_deinterlace_reset (GstBaseTransform * trans)
{
GstGLDeinterlace *deinterlace_filter = GST_GL_DEINTERLACE (trans);
gst_buffer_replace (&deinterlace_filter->prev_buffer, NULL);
//blocking call, wait the opengl thread has destroyed the shader
if (deinterlace_filter->shader)
gst_gl_context_del_shader (GST_GL_BASE_FILTER (trans)->context,
deinterlace_filter->shader);
deinterlace_filter->shader = NULL;
return GST_BASE_TRANSFORM_CLASS (parent_class)->stop (trans);
}
static gboolean
gst_vr_compositor_init_scene (GstGLFilter * filter)
{
GstVRCompositor *self = GST_VR_COMPOSITOR (filter);
GstGLContext *context = GST_GL_BASE_FILTER (filter)->context;
#ifdef HAVE_OPENHMD
Gst3DHmd *hmd = GST_3D_CAMERA_HMD (self->scene->camera)->hmd;
if (!hmd->device)
return FALSE;
#endif
gst_3d_scene_init_gl (self->scene, context);
return TRUE;
}
