void
gst_gl_effects_sobel (GstGLEffects * effects)
{
GstGLFilter *filter = GST_GL_FILTER (effects);
GstGLShader *shader;
shader = gst_gl_effects_get_fragment_shader (effects, "desat0",
desaturate_fragment_source_gles2);
gst_gl_filter_render_to_target_with_shader (filter, effects->intexture,
effects->midtexture[0], shader);
shader = gst_gl_effects_get_fragment_shader (effects, "hconv0",
sep_sobel_hconv3_fragment_source_gles2);
gst_gl_shader_use (shader);
gst_gl_shader_set_uniform_1f (shader, "height",
GST_VIDEO_INFO_HEIGHT (&filter->out_info));
gst_gl_filter_render_to_target_with_shader (filter, effects->midtexture[0],
effects->midtexture[1], shader);
shader = gst_gl_effects_get_fragment_shader (effects, "vconv0",
sep_sobel_vconv3_fragment_source_gles2);
gst_gl_shader_use (shader);
gst_gl_shader_set_uniform_1f (shader, "width",
GST_VIDEO_INFO_WIDTH (&filter->out_info));
gst_gl_filter_render_to_target_with_shader (filter, effects->midtexture[1],
effects->midtexture[0], shader);
shader = gst_gl_effects_get_fragment_shader (effects, "len0",
sep_sobel_length_fragment_source_gles2);
gst_gl_shader_use (shader);
gst_gl_shader_set_uniform_1i (shader, "invert", effects->invert);
gst_gl_filter_render_to_target_with_shader (filter, effects->midtexture[0],
effects->outtexture, shader);
}
//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_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
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 gboolean
_src_shader_fill_bound_fbo (gpointer impl)
{
struct SrcShader *src = impl;
const GstGLFuncs *gl;
g_return_val_if_fail (src->base.context, FALSE);
g_return_val_if_fail (src->shader, FALSE);
gl = src->base.context->gl_vtable;
gst_gl_shader_use (src->shader);
if (gl->GenVertexArrays)
gl->BindVertexArray (src->vao);
else
_bind_buffer (src);
gl->DrawElements (GL_TRIANGLES, src->n_indices, GL_UNSIGNED_SHORT,
(gpointer) (gintptr) src->index_offset);
if (gl->GenVertexArrays)
gl->BindVertexArray (0);
else
_unbind_buffer (src);
gst_gl_context_clear_shader (src->base.context);
return TRUE;
}
static gboolean
blit_tex (gpointer data)
{
GstGLContext *context = data;
const GstGLFuncs *gl = context->gl_vtable;
gl->Clear (GL_COLOR_BUFFER_BIT);
gst_gl_shader_use (shader);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, gst_gl_memory_get_texture_id (gl_tex));
gst_gl_shader_set_uniform_1i (shader, "s_texture", 0);
if (gl->GenVertexArrays)
gl->BindVertexArray (vao);
_bind_buffer (context);
gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0);
if (gl->GenVertexArrays)
gl->BindVertexArray (0);
_unbind_buffer (context);
return TRUE;
}
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);
}
}
static void
gst_gl_differencematte_interp (gint width, gint height, guint texture,
gpointer stuff)
{
GstGLDifferenceMatte *differencematte = GST_GL_DIFFERENCEMATTE (stuff);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gst_gl_shader_use (differencematte->shader[3]);
glActiveTexture (GL_TEXTURE0);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
gst_gl_shader_set_uniform_1i (differencematte->shader[3], "blend", 0);
glActiveTexture (GL_TEXTURE1);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, differencematte->newbgtexture);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
gst_gl_shader_set_uniform_1i (differencematte->shader[3], "base", 1);
glActiveTexture (GL_TEXTURE2);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, differencematte->midtexture[2]);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
gst_gl_shader_set_uniform_1i (differencematte->shader[3], "alpha", 2);
gst_gl_differencematte_draw_texture (differencematte, texture);
}
static void
gst_gl_effects_xray_step_three (gint width, gint height, guint texture,
gpointer data)
{
GstGLEffects *effects = GST_GL_EFFECTS (data);
GstGLShader *shader;
shader = g_hash_table_lookup (effects->shaderstable, "xray2");
if (!shader) {
shader = gst_gl_shader_new ();
g_hash_table_insert (effects->shaderstable, "xray2", shader);
}
g_return_if_fail (gst_gl_shader_compile_and_check (shader,
vconv7_fragment_source, GST_GL_SHADER_FRAGMENT_SOURCE));
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gst_gl_shader_use (shader);
glActiveTexture (GL_TEXTURE1);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
gst_gl_shader_set_uniform_1i (shader, "tex", 1);
gst_gl_shader_set_uniform_1fv (shader, "kernel", 9, gauss_kernel);
gst_gl_effects_draw_texture (effects, texture);
}
static void
gst_gl_differencematte_vblur (gint width, gint height, guint texture,
gpointer stuff)
{
GstGLDifferenceMatte *differencematte = GST_GL_DIFFERENCEMATTE (stuff);
gfloat gauss_kernel[9] = {
0.026995f, 0.064759f, 0.120985f,
0.176033f, 0.199471f, 0.176033f,
0.120985f, 0.064759f, 0.026995f
};
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gst_gl_shader_use (differencematte->shader[2]);
glActiveTexture (GL_TEXTURE0);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
gst_gl_shader_set_uniform_1i (differencematte->shader[2], "tex", 0);
gst_gl_shader_set_uniform_1fv (differencematte->shader[2], "kernel", 9,
gauss_kernel);
gst_gl_shader_set_uniform_1f (differencematte->shader[2], "norm_const",
0.977016f);
gst_gl_shader_set_uniform_1f (differencematte->shader[2], "norm_offset",
0.0f);
gst_gl_differencematte_draw_texture (differencematte, texture);
}
static void
draw_render (gpointer data)
{
GstGLContext *context = data;
GstGLContextClass *context_class = GST_GL_CONTEXT_GET_CLASS (context);
const GstGLFuncs *gl = context->gl_vtable;
gl->Clear (GL_COLOR_BUFFER_BIT);
gst_gl_shader_use (shader);
if (gl->GenVertexArrays)
gl->BindVertexArray (vao);
else
_bind_buffer (context);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, tex_id);
gst_gl_shader_set_uniform_1i (shader, "s_texture", 0);
gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
if (gl->GenVertexArrays)
gl->BindVertexArray (0);
else
_unbind_buffer (context);
context_class->swap_buffers (context);
}
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);
}
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)
{
GstGLFilterGlass *glass_filter = GST_GL_FILTER_GLASS (filter);
gfloat topy;
gfloat bottomy;
if (reversed) {
topy = center_y - 1.0f;
bottomy = center_y + 1.0f;
} else {
topy = center_y + 1.0f;
bottomy = center_y - 1.0f;
}
gst_gl_shader_use (glass_filter->shader);
glActiveTextureARB (GL_TEXTURE0_ARB);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
gst_gl_shader_set_uniform_1i (glass_filter->shader, "tex", 0);
gst_gl_shader_set_uniform_1f (glass_filter->shader, "width", (gfloat) width);
gst_gl_shader_set_uniform_1f (glass_filter->shader, "height",
(gfloat) height);
glBegin (GL_QUADS);
glColor4f (1.0f, 1.0f, 1.0f, start_alpha);
glTexCoord2i (0, height);
glVertex2f (center_x - 1.6f, topy);
glTexCoord2i (width, height);
glVertex2f (center_x + 1.6f, topy);
glColor4f (1.0, 1.0, 1.0, stop_alpha);
glTexCoord2i (width, 0);
glVertex2f (center_x + 1.6f, bottomy);
glTexCoord2i (0, 0);
glVertex2f (center_x - 1.6f, bottomy);
glEnd ();
gst_gl_shader_use (0);
}
static void
gst_gl_effects_squeeze_callback (gint width, gint height, guint texture,
gpointer data)
{
GstGLShader *shader;
GstGLFilter *filter = GST_GL_FILTER (data);
GstGLEffects *effects = GST_GL_EFFECTS (data);
GstGLContext *context = filter->context;
GstGLFuncs *gl = context->gl_vtable;
shader = g_hash_table_lookup (effects->shaderstable, "squeeze0");
if (!shader) {
shader = gst_gl_shader_new (context);
g_hash_table_insert (effects->shaderstable, (gchar *) "squeeze0", shader);
if (USING_GLES2 (context) || USING_OPENGL3 (context)) {
if (!gst_gl_shader_compile_with_default_v_and_check (shader,
squeeze_fragment_source_gles2, &filter->draw_attr_position_loc,
&filter->draw_attr_texture_loc)) {
/* gst gl context error is already set */
GST_ELEMENT_ERROR (effects, RESOURCE, NOT_FOUND,
("Failed to initialize squeeze shader, %s",
gst_gl_context_get_error ()), (NULL));
return;
}
}
#if GST_GL_HAVE_OPENGL
if (USING_OPENGL (context)) {
if (!gst_gl_shader_compile_and_check (shader,
squeeze_fragment_source_opengl, GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_context_set_error (context,
"Failed to initialize squeeze shader");
GST_ELEMENT_ERROR (effects, RESOURCE, NOT_FOUND,
("%s", gst_gl_context_get_error ()), (NULL));
return;
}
}
#endif
}
#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);
if (USING_OPENGL (context))
gl->Enable (GL_TEXTURE_2D);
gl->BindTexture (GL_TEXTURE_2D, texture);
gst_gl_shader_set_uniform_1i (shader, "tex", 0);
gst_gl_filter_draw_texture (filter, texture, width, height);
}
//opengl scene, params: input texture (not the output filter->texture)
static void
gst_gl_deinterlace_callback (gint width, gint height, guint texture,
gpointer stuff)
{
GstGLDeinterlace *deinterlace_filter = GST_GL_DEINTERLACE (stuff);
GstGLFilter *filter = GST_GL_FILTER (stuff);
GstGLBuffer *gl_buffer_prev = deinterlace_filter->gl_buffer_prev;
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gst_gl_shader_use (deinterlace_filter->shader);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
if (gl_buffer_prev) {
glActiveTexture (GL_TEXTURE1_ARB);
gst_gl_shader_set_uniform_1i (deinterlace_filter->shader, "tex_prev", 1);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, gl_buffer_prev->texture);
}
glActiveTexture (GL_TEXTURE0_ARB);
gst_gl_shader_set_uniform_1i (deinterlace_filter->shader, "tex", 0);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
gst_gl_shader_set_uniform_1f (deinterlace_filter->shader, "max_comb",
5.0f / 255.0f);
gst_gl_shader_set_uniform_1f (deinterlace_filter->shader, "motion_threshold",
25.0f / 255.0f);
gst_gl_shader_set_uniform_1f (deinterlace_filter->shader, "motion_sense",
30.0f / 255.0f);
gst_gl_shader_set_uniform_1i (deinterlace_filter->shader, "width",
filter->width);
gst_gl_shader_set_uniform_1i (deinterlace_filter->shader, "height",
filter->height);
glBegin (GL_QUADS);
glMultiTexCoord2iARB (GL_TEXTURE0_ARB, 0, 0);
glMultiTexCoord2iARB (GL_TEXTURE1_ARB, 0, 0);
glVertex2i (-1, -1);
glMultiTexCoord2iARB (GL_TEXTURE0_ARB, width, 0);
glMultiTexCoord2iARB (GL_TEXTURE1_ARB, width, 0);
glVertex2i (1, -1);
glMultiTexCoord2iARB (GL_TEXTURE0_ARB, width, height);
glMultiTexCoord2iARB (GL_TEXTURE1_ARB, width, height);
glVertex2i (1, 1);
glMultiTexCoord2iARB (GL_TEXTURE0_ARB, 0, height);
glMultiTexCoord2iARB (GL_TEXTURE1_ARB, 0, height);
glVertex2i (-1, 1);
glEnd ();
glDisable (GL_TEXTURE_RECTANGLE_ARB);
}
static void
_update_uniforms (GstGLFilterShader * filtershader)
{
if (filtershader->new_uniforms && filtershader->uniforms) {
gst_gl_shader_use (filtershader->shader);
gst_structure_foreach (filtershader->uniforms,
(GstStructureForeachFunc) _set_uniform, filtershader->shader);
filtershader->new_uniforms = FALSE;
}
}
static gboolean
gst_gl_alpha_filter_texture (GstGLFilter * filter, GstGLMemory * in_tex,
GstGLMemory * out_tex)
{
GstGLAlpha *alpha = GST_GL_ALPHA (filter);
GstGLShader *shader;
if (!alpha->alpha_shader)
_create_shader (alpha);
GST_OBJECT_LOCK (alpha);
if (alpha->method == ALPHA_METHOD_SET) {
shader = alpha->alpha_shader;
gst_gl_shader_use (shader);
gst_gl_shader_set_uniform_1f (shader, "alpha", alpha->alpha);
} else {
shader = alpha->chroma_key_shader;
gst_gl_shader_use (shader);
gst_gl_shader_set_uniform_1f (shader, "cb", alpha->cb);
gst_gl_shader_set_uniform_1f (shader, "cr", alpha->cr);
gst_gl_shader_set_uniform_1f (shader, "kg", alpha->kg);
gst_gl_shader_set_uniform_1f (shader, "accept_angle_tg",
alpha->accept_angle_tg);
gst_gl_shader_set_uniform_1f (shader, "accept_angle_ctg",
alpha->accept_angle_ctg);
gst_gl_shader_set_uniform_1f (shader, "one_over_kc", alpha->one_over_kc);
gst_gl_shader_set_uniform_1f (shader, "kfgy_scale", alpha->kfgy_scale);
gst_gl_shader_set_uniform_1f (shader, "noise_level2", alpha->noise_level2);
gst_gl_shader_set_uniform_1f (shader, "smin",
0.5 - alpha->black_sensitivity / 255.0);
gst_gl_shader_set_uniform_1f (shader, "smax",
0.5 + alpha->white_sensitivity / 255.0);
}
GST_OBJECT_UNLOCK (alpha);
gst_gl_filter_render_to_target_with_shader (filter, in_tex, out_tex, shader);
return TRUE;
}
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
_draw_checker_background (GstGLVideoMixer * video_mixer)
{
GstGLMixer *mixer = GST_GL_MIXER (video_mixer);
const GstGLFuncs *gl = GST_GL_BASE_MIXER (mixer)->context->gl_vtable;
gint attr_position_loc = 0;
/* *INDENT-OFF* */
gfloat v_vertices[] = {
-1.0,-1.0,-1.0f,
1.0,-1.0,-1.0f,
1.0, 1.0,-1.0f,
-1.0, 1.0,-1.0f,
};
/* *INDENT-ON* */
if (!video_mixer->checker) {
if (!gst_gl_context_gen_shader (GST_GL_BASE_MIXER (mixer)->context,
checker_v_src, checker_f_src, &video_mixer->checker))
return FALSE;
}
gst_gl_shader_use (video_mixer->checker);
attr_position_loc =
gst_gl_shader_get_attribute_location (video_mixer->checker, "a_position");
_init_vbo_indices (video_mixer);
if (!video_mixer->checker_vbo) {
gl->GenBuffers (1, &video_mixer->checker_vbo);
gl->BindBuffer (GL_ARRAY_BUFFER, video_mixer->checker_vbo);
gl->BufferData (GL_ARRAY_BUFFER, 4 * 3 * sizeof (GLfloat), v_vertices,
GL_STATIC_DRAW);
} else {
gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, video_mixer->vbo_indices);
gl->BindBuffer (GL_ARRAY_BUFFER, video_mixer->checker_vbo);
}
gl->VertexAttribPointer (attr_position_loc, 3, GL_FLOAT,
GL_FALSE, 3 * sizeof (GLfloat), (void *) 0);
gl->EnableVertexAttribArray (attr_position_loc);
gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0);
gl->DisableVertexAttribArray (attr_position_loc);
gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
gl->BindBuffer (GL_ARRAY_BUFFER, 0);
return TRUE;
}
static void
_test_default_shader_gl (GstGLContext * context, gpointer data)
{
GstGLShader *shader;
GError *error = NULL;
shader = gst_gl_shader_new_default (context, &error);
fail_unless (shader != NULL);
fail_unless (error == NULL);
gst_gl_shader_use (shader);
gst_gl_context_clear_shader (context);
gst_object_unref (shader);
}
void
gst_gl_effects_xray_step_five (gint width, gint height, guint texture,
gpointer data)
{
GstGLShader *shader;
GstGLEffects *effects = GST_GL_EFFECTS (data);
GstGLFilter *filter = GST_GL_FILTER (effects);
GstGLContext *context = filter->context;
GstGLFuncs *gl = context->gl_vtable;
shader = g_hash_table_lookup (effects->shaderstable, "xray4");
if (!shader) {
shader = gst_gl_shader_new (context);
g_hash_table_insert (effects->shaderstable, "xray4", shader);
}
if (!gst_gl_shader_compile_and_check (shader,
multiply_fragment_source, GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_context_set_error (context, "Failed to initialize multiply 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);
gl->ActiveTexture (GL_TEXTURE2);
gl->Enable (GL_TEXTURE_2D);
gl->BindTexture (GL_TEXTURE_2D, effects->midtexture[2]);
gl->Disable (GL_TEXTURE_2D);
gst_gl_shader_set_uniform_1i (shader, "base", 2);
gl->ActiveTexture (GL_TEXTURE1);
gl->Enable (GL_TEXTURE_2D);
gl->BindTexture (GL_TEXTURE_2D, texture);
gl->Disable (GL_TEXTURE_2D);
gst_gl_shader_set_uniform_1f (shader, "alpha", (gfloat) 0.5f);
gst_gl_shader_set_uniform_1i (shader, "blend", 1);
gst_gl_filter_draw_texture (filter, texture, width, height);
}
static void
gst_gl_differencematte_identity (gint width, gint height, guint texture,
gpointer stuff)
{
GstGLDifferenceMatte *differencematte = GST_GL_DIFFERENCEMATTE (stuff);
GstGLFilter *filter = GST_GL_FILTER (differencematte);
GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
gst_gl_shader_use (differencematte->identity_shader);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, texture);
gst_gl_shader_set_uniform_1i (differencematte->identity_shader, "tex", 0);
gst_gl_filter_draw_texture (filter, texture, width, height);
}
static void
gst_gl_effects_xray_step_two (gint width, gint height, guint texture,
gpointer data)
{
GstGLShader *shader;
GstGLEffects *effects = GST_GL_EFFECTS (data);
GstGLFilter *filter = GST_GL_FILTER (effects);
GstGLContext *context = filter->context;
GstGLFuncs *gl = context->gl_vtable;
shader = g_hash_table_lookup (effects->shaderstable, "xray1");
if (!shader) {
shader = gst_gl_shader_new (context);
g_hash_table_insert (effects->shaderstable, "xray1", shader);
}
if (!kernel_ready) {
fill_gaussian_kernel (gauss_kernel, 7, 1.5);
kernel_ready = TRUE;
}
if (!gst_gl_shader_compile_and_check (shader,
hconv7_fragment_source, GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_context_set_error (context, "Failed to initialize hconv7 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);
gl->ActiveTexture (GL_TEXTURE1);
gl->Enable (GL_TEXTURE_2D);
gl->BindTexture (GL_TEXTURE_2D, texture);
gl->Disable (GL_TEXTURE_2D);
gst_gl_shader_set_uniform_1i (shader, "tex", 1);
gst_gl_shader_set_uniform_1fv (shader, "kernel", 9, gauss_kernel);
gst_gl_shader_set_uniform_1f (shader, "width", width);
gst_gl_filter_draw_texture (filter, texture, width, height);
}
void
gst_gl_effects_xray_step_five (gint width, gint height, guint texture,
gpointer stuff)
{
GstGLEffects *effects = GST_GL_EFFECTS (stuff);
GstGLShader *shader;
shader = g_hash_table_lookup (effects->shaderstable, "xray4");
if (!shader) {
shader = gst_gl_shader_new ();
g_hash_table_insert (effects->shaderstable, "xray4", shader);
}
if (!gst_gl_shader_compile_and_check (shader,
multiply_fragment_source, GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_display_set_error (GST_GL_FILTER (effects)->display,
"Failed to initialize multiply shader");
GST_ELEMENT_ERROR (effects, RESOURCE, NOT_FOUND,
GST_GL_DISPLAY_ERR_MSG (GST_GL_FILTER (effects)->display), (NULL));
return;
}
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gst_gl_shader_use (shader);
glActiveTexture (GL_TEXTURE2);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, effects->midtexture[2]);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
gst_gl_shader_set_uniform_1i (shader, "base", 2);
glActiveTexture (GL_TEXTURE1);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
gst_gl_shader_set_uniform_1f (shader, "alpha", (gfloat) 0.5f);
gst_gl_shader_set_uniform_1i (shader, "blend", 1);
gst_gl_effects_draw_texture (effects, texture);
}
static gboolean
_2d_texture_renderer_init (GstAmc2DTextureRenderer * renderer)
{
GstGLFuncs *gl;
gboolean res;
gl = renderer->context->gl_vtable;
if (renderer->initialized)
return TRUE;
if (!gl->CreateProgramObject && !gl->CreateProgram) {
gst_gl_context_set_error (renderer->context,
"Cannot perform conversion without OpenGL shaders");
return FALSE;
}
_gen_oes_texture (renderer->context, &renderer->oes_tex_id);
res =
gst_gl_context_gen_shader (renderer->context, vert_COPY_OES,
frag_COPY_OES, &renderer->shader);
if (!res)
return FALSE;
renderer->shader_attr_position_loc =
gst_gl_shader_get_attribute_location (renderer->shader, "a_position");
renderer->shader_attr_texture_loc =
gst_gl_shader_get_attribute_location (renderer->shader, "a_texcoord");
gst_gl_shader_use (renderer->shader);
gst_gl_shader_set_uniform_1i (renderer->shader, "u_tex", 0);
gst_gl_context_clear_shader (renderer->context);
if (!_2d_texture_renderer_init_fbo (renderer))
return FALSE;
gl->BindTexture (GL_TEXTURE_2D, 0);
renderer->initialized = TRUE;
return TRUE;
}
static void
gst_gl_effects_xray_step_two (gint width, gint height, guint texture,
gpointer data)
{
GstGLEffects *effects = GST_GL_EFFECTS (data);
GstGLShader *shader;
shader = g_hash_table_lookup (effects->shaderstable, "xray1");
if (!shader) {
shader = gst_gl_shader_new ();
g_hash_table_insert (effects->shaderstable, "xray1", shader);
}
if (!kernel_ready) {
fill_gaussian_kernel (gauss_kernel, 7, 1.5);
kernel_ready = TRUE;
}
if (!gst_gl_shader_compile_and_check (shader,
hconv7_fragment_source, GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_display_set_error (GST_GL_FILTER (effects)->display,
"Failed to initialize hconv7 shader");
GST_ELEMENT_ERROR (effects, RESOURCE, NOT_FOUND,
GST_GL_DISPLAY_ERR_MSG (GST_GL_FILTER (effects)->display), (NULL));
return;
}
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gst_gl_shader_use (shader);
glActiveTexture (GL_TEXTURE1);
glEnable (GL_TEXTURE_RECTANGLE_ARB);
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
glDisable (GL_TEXTURE_RECTANGLE_ARB);
gst_gl_shader_set_uniform_1i (shader, "tex", 1);
gst_gl_shader_set_uniform_1fv (shader, "kernel", 9, gauss_kernel);
gst_gl_effects_draw_texture (effects, texture);
}
static void
_test_get_attribute_location_gl (GstGLContext * context, gpointer data)
{
GstGLShader *shader;
GError *error = NULL;
gint loc;
shader = gst_gl_shader_new_default (context, &error);
gst_gl_shader_use (shader);
loc = gst_gl_shader_get_attribute_location (shader, "a_position");
fail_unless (loc != -1);
loc = gst_gl_shader_get_attribute_location (shader, "a_texcoord");
fail_unless (loc != -1);
loc = gst_gl_shader_get_attribute_location (shader, "unused_value_1928374");
fail_unless (loc == -1);
gst_object_unref (shader);
}
static void
gst_gl_effects_square_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 = filter->context;
GstGLFuncs *gl = context->gl_vtable;
shader = g_hash_table_lookup (effects->shaderstable, "square0");
if (!shader) {
shader = gst_gl_shader_new (context);
g_hash_table_insert (effects->shaderstable, "square0", shader);
}
if (!gst_gl_shader_compile_and_check (shader,
square_fragment_source, GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_context_set_error (context, "Failed to initialize square 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);
gl->ActiveTexture (GL_TEXTURE0);
gl->Enable (GL_TEXTURE_2D);
gl->BindTexture (GL_TEXTURE_2D, texture);
gst_gl_shader_set_uniform_1i (shader, "tex", 0);
gst_gl_shader_set_uniform_1f (shader, "width", (gfloat) width / 2.0f);
gst_gl_shader_set_uniform_1f (shader, "height", (gfloat) height / 2.0f);
gst_gl_filter_draw_texture (filter, texture, width, height);
}
static void
draw_render (gpointer data)
{
GstGLContext *context = data;
GstGLContextClass *context_class = GST_GL_CONTEXT_GET_CLASS (context);
const GstGLFuncs *gl = context->gl_vtable;
const GLfloat vVertices[] = { 1.0f, 1.0f, 0.0f,
1.0f, 0.0f,
-1.0f, 1.0f, 0.0f,
0.0f, 0.0f,
-1.0f, -1.0f, 0.0f,
0.0f, 1.0f,
1.0f, -1.0f, 0.0f,
1.0f, 1.0f
};
GLushort indices[] = { 0, 1, 2, 0, 2, 3 };
gl->Clear (GL_COLOR_BUFFER_BIT);
gst_gl_shader_use (shader);
/* Load the vertex position */
gl->VertexAttribPointer (shader_attr_position_loc, 3,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), vVertices);
/* Load the texture coordinate */
gl->VertexAttribPointer (shader_attr_texture_loc, 2,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), &vVertices[3]);
gl->EnableVertexAttribArray (shader_attr_position_loc);
gl->EnableVertexAttribArray (shader_attr_texture_loc);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, tex_id);
gst_gl_shader_set_uniform_1i (shader, "s_texture", 0);
gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
context_class->swap_buffers (context);
}
static void
gst_gl_effects_xray_sobel_length (gint width, gint height, guint texture,
gpointer data)
{
GstGLShader *shader;
GstGLEffects *effects = GST_GL_EFFECTS (data);
GstGLFilter *filter = GST_GL_FILTER (effects);
GstGLContext *context = filter->context;
GstGLFuncs *gl = context->gl_vtable;
shader = g_hash_table_lookup (effects->shaderstable, "xray_sob_len");
if (!shader) {
shader = gst_gl_shader_new (context);
g_hash_table_insert (effects->shaderstable, (gchar *) "xray_sob_len",
shader);
}
if (!gst_gl_shader_compile_and_check (shader,
sep_sobel_length_fragment_source, GST_GL_SHADER_FRAGMENT_SOURCE)) {
gst_gl_context_set_error (context,
"Failed to initialize seobel length 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);
gl->ActiveTexture (GL_TEXTURE1);
gl->Enable (GL_TEXTURE_2D);
gl->BindTexture (GL_TEXTURE_2D, texture);
gl->Disable (GL_TEXTURE_2D);
gst_gl_shader_set_uniform_1i (shader, "tex", 1);
gst_gl_shader_set_uniform_1i (shader, "invert", TRUE);
gst_gl_filter_draw_texture (filter, texture, width, height);
}
