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gloverlay: reimplement everything

Browse source 
- update for shaders
 - add alpha property
 - image placement properties shamelessly borrowed from gdkpixbufoverlay
 - image placement properties are GstController able
 - use GstGLMemory for the overlay image data
 - add support for gles2
This commit is contained in:
Matthew Waters 2014-09-26 01:14:35 +10:00 committed by Tim-Philipp Müller
parent ec0d04acec
commit 96208c1694
3 changed files with 324 additions and 461 deletions
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711
ext/gl/gstgloverlay.c
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@ -32,8 +32,6 @@
* </refsect2>
*/
/* FIXME: Redo this */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
@ -70,9 +68,10 @@ static void gst_gl_overlay_set_property (GObject * object, guint prop_id,
static void gst_gl_overlay_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_gl_overlay_init_resources (GstGLFilter * filter);
static void gst_gl_overlay_reset_resources (GstGLFilter * filter);
static void gst_gl_overlay_before_transform (GstBaseTransform * trans,
GstBuffer * outbuf);
static gboolean gst_gl_overlay_filter_texture (GstGLFilter * filter,
guint in_tex, guint out_tex);
@ -83,26 +82,53 @@ enum
{
PROP_0,
PROP_LOCATION,
PROP_XPOS_PNG,
PROP_YPOS_PNG,
PROP_SIZE_PNG,
PROP_XPOS_VIDEO,
PROP_YPOS_VIDEO,
PROP_SIZE_VIDEO,
PROP_VIDEOTOP,
PROP_ROTATE_PNG,
PROP_ROTATE_VIDEO,
PROP_ANGLE_PNG,
PROP_ANGLE_VIDEO,
PROP_RATIO_VIDEO
PROP_OFFSET_X,
PROP_OFFSET_Y,
PROP_RELATIVE_X,
PROP_RELATIVE_Y,
PROP_OVERLAY_WIDTH,
PROP_OVERLAY_HEIGHT,
PROP_ALPHA
};
/* *INDENT-OFF* */
/* vertex source */
static const gchar *overlay_v_src =
"attribute vec4 a_position;\n"
"attribute vec2 a_texcoord;\n"
"varying vec2 v_texcoord;\n"
"void main()\n"
"{\n"
" gl_Position = a_position;\n"
" v_texcoord = a_texcoord;\n"
"}";
/* fragment source */
static const gchar *overlay_f_src =
"#ifdef GL_ES\n"
"precision mediump float;\n"
"#endif\n"
"uniform sampler2D texture;\n"
"uniform float alpha;\n"
"varying vec2 v_texcoord;\n"
"void main()\n"
"{\n"
" vec4 rgba = texture2D( texture, v_texcoord );\n"
" gl_FragColor = vec4(rgba.rgb, rgba.a * alpha);\n"
"}\n";
/* *INDENT-ON* */
/* init resources that need a gl context */
static void
static gboolean
gst_gl_overlay_init_gl_resources (GstGLFilter * filter)
{
// GstGLOverlay *overlay = GST_GL_OVERLAY (filter);
GstGLOverlay *overlay = GST_GL_OVERLAY (filter);
if (overlay->shader)
gst_gl_context_del_shader (filter->context, overlay->shader);
return gst_gl_context_gen_shader (filter->context, overlay_v_src,
overlay_f_src, &overlay->shader);
}
/* free resources that need a gl context */
@ -110,9 +136,16 @@ static void
gst_gl_overlay_reset_gl_resources (GstGLFilter * filter)
{
GstGLOverlay *overlay = GST_GL_OVERLAY (filter);
const GstGLFuncs *gl = filter->context->gl_vtable;
gl->DeleteTextures (1, &overlay->pbuftexture);
if (overlay->shader) {
gst_gl_context_del_shader (filter->context, overlay->shader);
overlay->shader = NULL;
}
if (overlay->image_memory) {
gst_memory_unref ((GstMemory *) overlay->image_memory);
overlay->image_memory = NULL;
}
}
static void
@ -129,173 +162,87 @@ gst_gl_overlay_class_init (GstGLOverlayClass * klass)
GST_GL_FILTER_CLASS (klass)->set_caps = gst_gl_overlay_set_caps;
GST_GL_FILTER_CLASS (klass)->filter_texture = gst_gl_overlay_filter_texture;
GST_GL_FILTER_CLASS (klass)->display_init_cb =
gst_gl_overlay_init_gl_resources;
GST_GL_FILTER_CLASS (klass)->display_reset_cb =
gst_gl_overlay_reset_gl_resources;
GST_GL_FILTER_CLASS (klass)->onStart = gst_gl_overlay_init_resources;
GST_GL_FILTER_CLASS (klass)->onStop = gst_gl_overlay_reset_resources;
GST_GL_FILTER_CLASS (klass)->onInitFBO = gst_gl_overlay_init_gl_resources;
g_object_class_install_property (gobject_class,
PROP_LOCATION,
g_param_spec_string ("location",
"Location of the image",
"Location of the image", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
GST_BASE_TRANSFORM_CLASS (klass)->before_transform =
GST_DEBUG_FUNCPTR (gst_gl_overlay_before_transform);
g_object_class_install_property (gobject_class,
PROP_XPOS_PNG,
g_param_spec_int ("xpos-png",
"X position of overlay image in percents",
"X position of overlay image in percents",
0, 100, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_YPOS_PNG,
g_param_spec_int ("ypos-png",
"Y position of overlay image in percents",
"Y position of overlay image in percents",
0, 100, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_SIZE_PNG,
g_param_spec_int ("proportion-png",
"Relative size of overlay image, in percents",
"Relative size of iverlay image, in percents",
0, 100, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_XPOS_VIDEO,
g_param_spec_int ("xpos-video",
"X position of overlay video in percents",
"X position of overlay video in percents",
0, 100, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_YPOS_VIDEO,
g_param_spec_int ("ypos-video",
"Y position of overlay video in percents",
"Y position of overlay video in percents",
0, 100, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_SIZE_VIDEO,
g_param_spec_int ("proportion-video",
"Relative size of overlay video, in percents",
"Relative size of iverlay video, in percents",
0, 100, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_VIDEOTOP,
g_param_spec_boolean ("video-top",
"Video-top", "Video is over png image", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_ROTATE_PNG,
g_param_spec_int ("rotate-png",
"choose rotation axis for the moment only Y axis is implemented",
"choose rotation axis for the moment only Y axis is implemented",
0, 3, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_ROTATE_VIDEO,
g_param_spec_int ("rotate-video",
"choose rotation axis for the moment only Y axis is implemented",
"choose rotation axis for the moment only Y axis is implemented",
0, 3, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_ANGLE_PNG,
g_param_spec_int ("angle-png",
"choose angle in axis to choosen between -90 and 90",
"choose angle in axis to choosen between -90 and 90",
-90, 90, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_ANGLE_VIDEO,
g_param_spec_int ("angle-video",
"choose angle in axis to choosen between -90 and 90",
"choose angle in axis to choosen between -90 and 90",
-90, 90, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_RATIO_VIDEO,
g_param_spec_int ("ratio-video",
"choose ratio video between 0 and 3\n \t\t\t0 : Default ratio\n\t\t\t1 : 4 / 3\n\t\t\t2 : 16 / 9\n\t\t\t3 : 16 / 10",
"choose ratio video between 0 and 3\n \t\t\t0 : Default ratio\n\t\t\t1 : 4 / 3\n\t\t\t2 : 16 / 9\n\t\t\t3 : 16 / 10",
0, 3, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_LOCATION,
g_param_spec_string ("location", "location",
"Location of image file to overlay", NULL, GST_PARAM_CONTROLLABLE
| GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_OFFSET_X,
g_param_spec_int ("offset-x", "X Offset",
"For positive value, horizontal offset of overlay image in pixels from"
" left of video image. For negative value, horizontal offset of overlay"
" image in pixels from right of video image", G_MININT, G_MAXINT, 0,
GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_OFFSET_Y,
g_param_spec_int ("offset-y", "Y Offset",
"For positive value, vertical offset of overlay image in pixels from"
" top of video image. For negative value, vertical offset of overlay"
" image in pixels from bottom of video image", G_MININT, G_MAXINT, 0,
GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_RELATIVE_X,
g_param_spec_double ("relative-x", "Relative X Offset",
"Horizontal offset of overlay image in fractions of video image "
"width, from top-left corner of video image", 0.0, 1.0, 0.0,
GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_RELATIVE_Y,
g_param_spec_double ("relative-y", "Relative Y Offset",
"Vertical offset of overlay image in fractions of video image "
"height, from top-left corner of video image", 0.0, 1.0, 0.0,
GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_OVERLAY_WIDTH,
g_param_spec_int ("overlay-width", "Overlay Width",
"Width of overlay image in pixels (0 = same as overlay image)", 0,
G_MAXINT, 0,
GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_OVERLAY_HEIGHT,
g_param_spec_int ("overlay-height", "Overlay Height",
"Height of overlay image in pixels (0 = same as overlay image)", 0,
G_MAXINT, 0,
GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_ALPHA,
g_param_spec_double ("alpha", "Alpha", "Global alpha of overlay image",
0.0, 1.0, 1.0, GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_set_metadata (element_class,
"Gstreamer OpenGL Overlay", "Filter/Effect/Video",
"Overlay GL video texture with a PNG image",
"Filippo Argiolas <filippo.argiolas@gmail.com>");
/*
g_object_class_install_property (gobject_class,
PROP_STRETCH,
g_param_spec_boolean ("stretch",
"Stretch the image to texture size",
"Stretch the image to fit video texture size",
TRUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
*/
"Overlay GL video texture with a JPEG/PNG image",
"Filippo Argiolas <filippo.argiolas@gmail.com>, "
"Matthew Waters <matthew@centricular.com>");
}
/* rectangle in NDC */
static void
gst_gl_overlay_calc_ratio_video (GstGLOverlay * o, gfloat * video_ratio_w,
gfloat * video_ratio_h)
{
if (o->ratio_video == 0) {
o->ratio_texture = (gfloat) o->ratio_window;
*video_ratio_w = (gfloat) o->width_window;
*video_ratio_h = (gfloat) o->height_window;
} else if (o->ratio_video == 1) {
o->ratio_texture = (gfloat) 1.33;
*video_ratio_w = 4.0;
*video_ratio_h = 3.0;
} else if (o->ratio_video == 2) {
o->ratio_texture = (gfloat) 1.77;
*video_ratio_w = 16.0;
*video_ratio_h = 9.0;
} else {
o->ratio_texture = (gfloat) 1.6;
*video_ratio_w = 16.0;
*video_ratio_h = 10.0;
}
}
static void
gst_gl_overlay_init_texture (GstGLOverlay * o, GLuint tex, int flag)
gst_gl_overlay_draw (GstGLOverlay * o, gboolean overlay_image, gfloat x,
gfloat y, gfloat width, gfloat height)
{
GstGLFilter *filter = GST_GL_FILTER (o);
const GstGLFuncs *gl = filter->context->gl_vtable;
if (flag == 0 && o->type_file == 2) {
gl->Enable (GL_TEXTURE_2D);
gl->BindTexture (GL_TEXTURE_2D, tex);
} else {
gl->Enable (GL_TEXTURE_2D);
gl->BindTexture (GL_TEXTURE_2D, tex);
}
}
static void
gst_gl_overlay_draw (GstGLOverlay * o, int flag)
{
GstGLFilter *filter = GST_GL_FILTER (o);
const GstGLFuncs *gl = filter->context->gl_vtable;
float y = 0.0f;
float width = 0.0f;
float height = 0.0f;
GLint attr_position_loc = 0;
GLint attr_texture_loc = 0;
gdouble alpha;
/* *INDENT-OFF* */
float v_vertices[] = {
/*| Vertex | TexCoord |*/
-o->ratio_x + o->posx, y, 0.0f, 0.0f, 0.0f,
o->ratio_x + o->posx, y, 0.0f, width, 0.0f,
o->ratio_x + o->posx, y, 0.0f, width, height,
-o->ratio_x + o->posx, y, 0.0f, 0.0, height,
/*| Vertex | TexCoord |*/
x, y, 0.0f, 0.0f, 0.0f,
x + width, y, 0.0f, 1.0f, 0.0f,
x + width, y + height, 0.0f, 1.0f, 1.0f,
x, y + height, 0.0f, 0.0, 1.0f,
};
GLushort indices[] = {
@ -304,136 +251,96 @@ gst_gl_overlay_draw (GstGLOverlay * o, int flag)
};
/* *INDENT-ON* */
if (flag == 1) {
width = 1.0f;
height = 1.0f;
} else if (flag == 0 && o->type_file == 1) {
width = (gfloat) o->width;
height = (gfloat) o->height;
} else if (flag == 0 && o->type_file == 2) {
width = 1.0f;
height = 1.0f;
}
gst_gl_shader_use (o->shader);
alpha = overlay_image ? o->alpha : 1.0f;
gst_gl_shader_set_uniform_1f (o->shader, "alpha", alpha);
gst_gl_shader_set_uniform_1i (o->shader, "texture", 0);
v_vertices[8] = width;
v_vertices[13] = width;
v_vertices[14] = height;
v_vertices[19] = height;
attr_position_loc =
gst_gl_shader_get_attribute_location (o->shader, "a_position");
attr_texture_loc =
gst_gl_shader_get_attribute_location (o->shader, "a_texcoord");
y = (o->type_file == 2 && flag == 0 ? o->ratio_y : -o->ratio_y) + o->posy;
v_vertices[1] = y;
v_vertices[6] = y;
y = (o->type_file == 2 && flag == 0 ? -o->ratio_y : o->ratio_y) + o->posy;
v_vertices[11] = y;
v_vertices[16] = y;
gl->VertexAttribPointer (attr_position_loc, 3, GL_FLOAT,
GL_FALSE, 5 * sizeof (GLfloat), &v_vertices[0]);
gst_gl_context_clear_shader (filter->context);
gl->VertexAttribPointer (attr_texture_loc, 2, GL_FLOAT,
GL_FALSE, 5 * sizeof (GLfloat), &v_vertices[3]);
gl->ClientActiveTexture (GL_TEXTURE0);
gl->EnableClientState (GL_TEXTURE_COORD_ARRAY);
gl->EnableClientState (GL_VERTEX_ARRAY);
gl->VertexPointer (3, GL_FLOAT, 5 * sizeof (float), v_vertices);
gl->TexCoordPointer (2, GL_FLOAT, 5 * sizeof (float), &v_vertices[3]);
gl->EnableVertexAttribArray (attr_position_loc);
gl->EnableVertexAttribArray (attr_texture_loc);
gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
gl->DisableClientState (GL_TEXTURE_COORD_ARRAY);
gl->DisableClientState (GL_VERTEX_ARRAY);
gl->DisableVertexAttribArray (attr_position_loc);
gl->DisableVertexAttribArray (attr_texture_loc);
gst_gl_context_clear_shader (filter->context);
}
static void
gst_gl_overlay_calc_proportion (GstGLOverlay * o, int flag, float size_texture,
float width, float height)
{
if ((1.59f < o->ratio_window && o->ratio_window < 1.61f
&& 1.77f < o->ratio_texture && o->ratio_texture < 1.78f)
|| (1.3f < o->ratio_window && o->ratio_window < 1.34f
&& ((1.7f < o->ratio_texture && o->ratio_texture < 1.78f)
|| (1.59f < o->ratio_texture && o->ratio_texture < 1.61f)))) {
o->ratio_x = o->ratio_window * (gfloat) size_texture / 100.0f;
o->ratio_y =
(o->ratio_window / width) * height * (gfloat) size_texture / 100.0f;
} else {
o->ratio_x = o->ratio_texture * (gfloat) size_texture / 100.0f;
o->ratio_y = 1.0f * size_texture / 100.0f;
}
o->posx =
((o->ratio_window - o->ratio_x) * ((flag ==
1 ? o->pos_x_video : o->pos_x_png) - 50.0f) / 50.0f);
o->posy =
(1.0f - o->ratio_y) * (((flag ==
1 ? o->pos_y_video : o->pos_y_png) - 50.0f) / 50.0f);
}
static void
gst_gl_overlay_load_texture (GstGLOverlay * o, GLuint tex, int flag)
gst_gl_overlay_load_texture (GstGLOverlay * o, GLuint tex,
gboolean overlay_image)
{
GstGLFilter *filter = GST_GL_FILTER (o);
const GstGLFuncs *gl = filter->context->gl_vtable;
gfloat x, y, width, height;
gfloat video_ratio_w;
gfloat video_ratio_h;
o->ratio_window = (gfloat) o->width_window / (gfloat) o->height_window;
gl->MatrixMode (GL_MODELVIEW);
gl->ActiveTexture (GL_TEXTURE0);
gst_gl_overlay_init_texture (o, tex, flag);
gl->BlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gl->Enable (GL_BLEND);
gl->Translatef (0.0f, 0.0f, -1.43f);
if (flag == 1) {
if (o->rotate_video)
gl->Rotatef (o->angle_video, 0, 1, 0);
gst_gl_overlay_calc_ratio_video (o, &video_ratio_w, &video_ratio_h);
gst_gl_overlay_calc_proportion (o, flag, o->size_video, video_ratio_w,
video_ratio_h);
} else {
o->ratio_texture = (gfloat) o->width / (gfloat) o->height;
if (o->rotate_png == 2)
gl->Rotatef (o->angle_png, 0, 1, 0);
gst_gl_overlay_calc_proportion (o, flag, o->size_png, (gfloat) o->width,
(gfloat) o->height);
if (gst_gl_context_get_gl_api (filter->context) & GST_GL_API_OPENGL) {
gl->MatrixMode (GL_MODELVIEW);
gl->LoadIdentity ();
}
gst_gl_overlay_draw (o, flag);
if (flag == 1)
gl->Disable (GL_TEXTURE_2D);
gl->Enable (GL_TEXTURE_2D);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, tex);
gl->Enable (GL_BLEND);
gl->BlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
gl->BlendEquation (GL_FUNC_ADD);
if (overlay_image) {
gint render_width, render_height;
/* scale from [0, 1] -> [-1, 1] */
x = ((gfloat) o->offset_x / (gfloat) o->window_width +
o->relative_x) * 2.0f - 1.0;
y = ((gfloat) o->offset_y / (gfloat) o->window_height +
o->relative_y) * 2.0f - 1.0;
/* scale from [0, 1] -> [0, 2] */
render_width = o->overlay_width > 0 ? o->overlay_width : o->image_width;
render_height = o->overlay_height > 0 ? o->overlay_height : o->image_height;
width = ((gfloat) render_width / (gfloat) o->window_width) * 2.0f;
height = ((gfloat) render_height / (gfloat) o->window_height) * 2.0f;
} else {
/* scale from [0, 1] -> [-1, 1] */
x = -1.0f;
y = -1.0f;
/* scale from [0, 1] -> [0, 2] */
width = 2.0f;
height = 2.0f;
}
gst_gl_overlay_draw (o, overlay_image, x, y, width, height);
}
static void
gst_gl_overlay_init (GstGLOverlay * overlay)
{
overlay->location = NULL;
overlay->pixbuf = NULL;
overlay->pbuftexture = 0;
overlay->pbuftexture = 0;
overlay->width = 0;
overlay->height = 0;
overlay->pos_x_png = 0;
overlay->pos_y_png = 0;
overlay->size_png = 100;
overlay->pos_x_video = 0;
overlay->pos_y_video = 0;
overlay->size_video = 100;
overlay->video_top = FALSE;
overlay->rotate_png = 0;
overlay->rotate_video = 0;
overlay->angle_png = 0;
overlay->angle_video = 0;
overlay->ratio_video = 0;
// overlay->stretch = TRUE;
overlay->pbuf_has_changed = FALSE;
overlay->offset_x = 0;
overlay->offset_y = 0;
overlay->relative_x = 0.0;
overlay->relative_y = 0.0;
overlay->overlay_width = 0;
overlay->overlay_height = 0;
overlay->alpha = 1.0;
}
static void
gst_gl_overlay_reset_resources (GstGLFilter * filter)
{
// GstGLOverlay* overlay = GST_GL_OVERLAY(filter);
}
static void
@ -446,49 +353,30 @@ gst_gl_overlay_set_property (GObject * object, guint prop_id,
case PROP_LOCATION:
if (overlay->location != NULL)
g_free (overlay->location);
overlay->pbuf_has_changed = TRUE;
overlay->location_has_changed = TRUE;
overlay->location = g_value_dup_string (value);
break;
case PROP_XPOS_PNG:
overlay->pos_x_png = g_value_get_int (value);
case PROP_OFFSET_X:
overlay->offset_x = g_value_get_int (value);
break;
case PROP_YPOS_PNG:
overlay->pos_y_png = g_value_get_int (value);
case PROP_OFFSET_Y:
overlay->offset_y = g_value_get_int (value);
break;
case PROP_SIZE_PNG:
overlay->size_png = g_value_get_int (value);
case PROP_RELATIVE_X:
overlay->relative_x = g_value_get_double (value);
break;
case PROP_XPOS_VIDEO:
overlay->pos_x_video = g_value_get_int (value);
case PROP_RELATIVE_Y:
overlay->relative_y = g_value_get_double (value);
break;
case PROP_YPOS_VIDEO:
overlay->pos_y_video = g_value_get_int (value);
case PROP_OVERLAY_WIDTH:
overlay->overlay_width = g_value_get_int (value);
break;
case PROP_SIZE_VIDEO:
overlay->size_video = g_value_get_int (value);
case PROP_OVERLAY_HEIGHT:
overlay->overlay_height = g_value_get_int (value);
break;
case PROP_VIDEOTOP:
overlay->video_top = g_value_get_boolean (value);
case PROP_ALPHA:
overlay->alpha = g_value_get_double (value);
break;
case PROP_ROTATE_PNG:
overlay->rotate_png = g_value_get_int (value);
break;
case PROP_ROTATE_VIDEO:
overlay->rotate_video = g_value_get_int (value);
break;
case PROP_ANGLE_PNG:
overlay->angle_png = g_value_get_int (value);
break;
case PROP_ANGLE_VIDEO:
overlay->angle_video = g_value_get_int (value);
break;
case PROP_RATIO_VIDEO:
overlay->ratio_video = (gfloat) g_value_get_int (value);
break;
/* case PROP_STRETCH:
overlay->stretch = g_value_get_boolean (value);
break;
*/
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -505,46 +393,27 @@ gst_gl_overlay_get_property (GObject * object, guint prop_id,
case PROP_LOCATION:
g_value_set_string (value, overlay->location);
break;
case PROP_XPOS_PNG:
g_value_set_int (value, overlay->pos_x_png);
case PROP_OFFSET_X:
g_value_set_int (value, overlay->offset_x);
break;
case PROP_YPOS_PNG:
g_value_set_int (value, overlay->pos_y_png);
case PROP_OFFSET_Y:
g_value_set_int (value, overlay->offset_y);
break;
case PROP_SIZE_PNG:
g_value_set_int (value, overlay->size_png);
case PROP_RELATIVE_X:
g_value_set_double (value, overlay->relative_x);
break;
case PROP_XPOS_VIDEO:
g_value_set_int (value, overlay->pos_x_video);
case PROP_RELATIVE_Y:
g_value_set_double (value, overlay->relative_y);
break;
case PROP_YPOS_VIDEO:
g_value_set_int (value, overlay->pos_y_video);
case PROP_OVERLAY_WIDTH:
g_value_set_int (value, overlay->overlay_width);
break;
case PROP_SIZE_VIDEO:
g_value_set_int (value, overlay->size_video);
case PROP_OVERLAY_HEIGHT:
g_value_set_int (value, overlay->overlay_height);
break;
case PROP_VIDEOTOP:
g_value_set_boolean (value, overlay->video_top);
case PROP_ALPHA:
g_value_set_double (value, overlay->alpha);
break;
case PROP_ROTATE_PNG:
g_value_set_int (value, overlay->rotate_png);
break;
case PROP_ROTATE_VIDEO:
g_value_set_int (value, overlay->rotate_video);
break;
case PROP_ANGLE_PNG:
g_value_set_int (value, overlay->angle_png);
break;
case PROP_ANGLE_VIDEO:
g_value_set_int (value, overlay->angle_video);
break;
case PROP_RATIO_VIDEO:
g_value_set_int (value, (gint) overlay->ratio_video);
break;
/* case PROP_STRETCH:
g_value_set_boolean (value, overlay->stretch);
break;
*/
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -563,78 +432,40 @@ gst_gl_overlay_set_caps (GstGLFilter * filter, GstCaps * incaps,
gst_structure_get_int (s, "width", &width);
gst_structure_get_int (s, "height", &height);
overlay->width_window = (gfloat) width;
overlay->height_window = (gfloat) height;
overlay->window_width = width;
overlay->window_height = height;
return TRUE;
}
static void
gst_gl_overlay_init_resources (GstGLFilter * filter)
{
// GstGLOverlay *overlay = GST_GL_OVERLAY (filter);
}
static void
gst_gl_overlay_callback (gint width, gint height, guint texture, gpointer stuff)
{
GstGLOverlay *overlay = GST_GL_OVERLAY (stuff);
GstGLFilter *filter = GST_GL_FILTER (overlay);
const GstGLFuncs *gl = filter->context->gl_vtable;
GstMapInfo map_info;
guint image_tex;
gl->MatrixMode (GL_PROJECTION);
gl->LoadIdentity ();
gluPerspective (70.0f,
(GLfloat) overlay->width_window / (GLfloat) overlay->height_window, 1.0f,
1000.0f);
gl->Enable (GL_DEPTH_TEST);
gluLookAt (0.0, 0.0, 0.01, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
if (!overlay->video_top) {
if (overlay->pbuftexture != 0)
gst_gl_overlay_load_texture (overlay, overlay->pbuftexture, 0);
// if (overlay->stretch) {
// width = (gfloat) overlay->width;
// height = (gfloat) overlay->height;
// }
if (gst_gl_context_get_gl_api (filter->context) & GST_GL_API_OPENGL) {
gl->MatrixMode (GL_PROJECTION);
gl->LoadIdentity ();
gst_gl_overlay_load_texture (overlay, texture, 1);
} else {
gst_gl_overlay_load_texture (overlay, texture, 1);
if (overlay->pbuftexture == 0)
return;
// if (overlay->stretch) {
// width = (gfloat) overlay->width;
// height = (gfloat) overlay->height;
// }
gl->LoadIdentity ();
gst_gl_overlay_load_texture (overlay, overlay->pbuftexture, 0);
}
}
static void
init_pixbuf_texture (GstGLContext * context, gpointer data)
{
GstGLOverlay *overlay = GST_GL_OVERLAY (data);
GstGLFilter *filter = GST_GL_FILTER (overlay);
const GstGLFuncs *gl = filter->context->gl_vtable;
gst_gl_overlay_load_texture (overlay, texture, FALSE);
if (overlay->pixbuf) {
gl->DeleteTextures (1, &overlay->pbuftexture);
gl->GenTextures (1, &overlay->pbuftexture);
if (overlay->type_file == 1) {
gl->BindTexture (GL_TEXTURE_2D, overlay->pbuftexture);
gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGBA,
(gint) overlay->width, (gint) overlay->height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, overlay->pixbuf);
} else if (overlay->type_file == 2) {
gl->BindTexture (GL_TEXTURE_2D, overlay->pbuftexture);
gl->TexImage2D (GL_TEXTURE_2D, 0, overlay->internalFormat,
overlay->width, overlay->height, 0, overlay->format,
GL_UNSIGNED_BYTE, overlay->pixbuf);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
}
}
if (overlay->image_memory == NULL || overlay->alpha == 0.0)
return;
if (!gst_memory_map ((GstMemory *) overlay->image_memory, &map_info,
GST_MAP_READ | GST_MAP_GL) || map_info.data == NULL)
return;
image_tex = *(guint *) map_info.data;
gst_gl_overlay_load_texture (overlay, image_tex, TRUE);
gst_memory_unmap ((GstMemory *) overlay->image_memory, &map_info);
}
static gboolean
@ -643,18 +474,21 @@ gst_gl_overlay_filter_texture (GstGLFilter * filter, guint in_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;
if (overlay->location_has_changed) {
if (overlay->location == NULL) {
if (overlay->image_memory) {
gst_memory_unref ((GstMemory *) overlay->image_memory);
overlay->image_memory = NULL;
}
} else {
if ((overlay->type_file = gst_gl_overlay_load_png (filter)) == 0) {
if ((overlay->type_file = gst_gl_overlay_load_jpeg (filter)) == 0) {
return FALSE;
}
}
}
overlay->pbuf_has_changed = FALSE;
overlay->location_has_changed = FALSE;
}
gst_gl_filter_render_to_target (filter, TRUE, in_tex, out_tex,
@ -663,6 +497,18 @@ gst_gl_overlay_filter_texture (GstGLFilter * filter, guint in_tex,
return TRUE;
}
static void
gst_gl_overlay_before_transform (GstBaseTransform * trans, GstBuffer * outbuf)
{
GstClockTime stream_time;
stream_time = gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME,
GST_BUFFER_TIMESTAMP (outbuf));
if (GST_CLOCK_TIME_IS_VALID (stream_time))
gst_object_sync_values (GST_OBJECT (trans), stream_time);
}
static void
user_warning_fn (png_structp png_ptr, png_const_charp warning_msg)
{
@ -675,6 +521,8 @@ static gint
gst_gl_overlay_load_jpeg (GstGLFilter * filter)
{
GstGLOverlay *overlay = GST_GL_OVERLAY (filter);
GstVideoInfo v_info;
GstMapInfo map_info;
FILE *fp = NULL;
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
@ -691,23 +539,33 @@ gst_gl_overlay_load_jpeg (GstGLFilter * filter)
jpeg_stdio_src (&cinfo, fp);
jpeg_read_header (&cinfo, TRUE);
jpeg_start_decompress (&cinfo);
overlay->width = cinfo.image_width;
overlay->height = cinfo.image_height;
overlay->internalFormat = cinfo.num_components;
overlay->image_width = cinfo.image_width;
overlay->image_height = cinfo.image_height;
if (cinfo.num_components == 1)
overlay->format = GL_LUMINANCE;
gst_video_info_set_format (&v_info, GST_VIDEO_FORMAT_Y444,
overlay->image_width, overlay->image_height);
else
overlay->format = GL_RGB;
overlay->pixbuf = (GLubyte *) malloc (sizeof (GLubyte) * overlay->width
* overlay->height * overlay->internalFormat);
for (i = 0; i < overlay->height; ++i) {
j = (overlay->pixbuf +
(((int) overlay->height - (i +
1)) * (int) overlay->width * overlay->internalFormat));
gst_video_info_set_format (&v_info, GST_VIDEO_FORMAT_RGB,
overlay->image_width, overlay->image_height);
overlay->image_memory =
(GstGLMemory *) gst_gl_memory_alloc (filter->context, &v_info, 0);
if (!gst_memory_map ((GstMemory *) overlay->image_memory, &map_info,
GST_MAP_WRITE)) {
LOAD_ERROR ("failed to map memory");
}
for (i = 0; i < overlay->image_height; ++i) {
j = (map_info.data +
(((int) overlay->image_height - (i +
1)) * (int) overlay->image_width * cinfo.num_components));
jpeg_read_scanlines (&cinfo, &j, 1);
}
jpeg_finish_decompress (&cinfo);
jpeg_destroy_decompress (&cinfo);
gst_memory_unmap ((GstMemory *) overlay->image_memory, &map_info);
fclose (fp);
return 2;
}
@ -716,6 +574,8 @@ static gint
gst_gl_overlay_load_png (GstGLFilter * filter)
{
GstGLOverlay *overlay = GST_GL_OVERLAY (filter);
GstVideoInfo v_info;
GstMapInfo map_info;
png_structp png_ptr;
png_infop info_ptr;
@ -787,19 +647,26 @@ gst_gl_overlay_load_png (GstGLFilter * filter)
LOAD_ERROR ("color type is not rgb");
}
overlay->width = width;
overlay->height = height;
overlay->image_width = width;
overlay->image_height = height;
overlay->pixbuf = (guchar *) malloc (sizeof (guchar) * width * height * 4);
gst_video_info_set_format (&v_info, GST_VIDEO_FORMAT_RGBA, width, height);
overlay->image_memory =
(GstGLMemory *) gst_gl_memory_alloc (filter->context, &v_info, 0);
if (!gst_memory_map ((GstMemory *) overlay->image_memory, &map_info,
GST_MAP_WRITE)) {
LOAD_ERROR ("failed to map memory");
}
rows = (guchar **) malloc (sizeof (guchar *) * height);
for (y = 0; y < height; ++y)
rows[y] = (guchar *) (overlay->pixbuf + y * width * 4);
rows[y] = (guchar *) (map_info.data + y * width * 4);
png_read_image (png_ptr, rows);
free (rows);
gst_memory_unmap ((GstMemory *) overlay->image_memory, &map_info);
png_read_end (png_ptr, info_ptr);
png_destroy_read_struct (&png_ptr, &info_ptr, png_infopp_NULL);

52
ext/gl/gstgloverlay.h
View file

@ -37,37 +37,29 @@ typedef struct _GstGLOverlayClass GstGLOverlayClass;
struct _GstGLOverlay
{
GstGLFilter filter;
gchar *location;
gboolean pbuf_has_changed;
gint8 pos_x_png;
gint8 pos_y_png;
guint8 size_png;
gint8 pos_x_video;
gint8 pos_y_video;
guint8 size_video;
gboolean video_top;
guint8 rotate_png;
guint8 rotate_video;
gint8 angle_png;
gint8 angle_video;
guchar *pixbuf;
gint width, height;
GLuint pbuftexture;
GLint internalFormat;
GLenum format;
gint type_file; // 0 = No; 1 = PNG and 2 = JPEG
gfloat width_window;
gfloat height_window;
gfloat posx;
gfloat posy;
gfloat ratio_window;
gfloat ratio_texture;
gfloat ratio_x;
gfloat ratio_y;
gfloat ratio_video;
GstGLFilter filter;
/* gboolean stretch; */
/* properties */
gchar *location;
gint offset_x;
gint offset_y;
gdouble relative_x;
gdouble relative_y;
gint overlay_width;
gint overlay_height;
gdouble alpha;
/* <private> */
GstGLShader *shader;
GstGLMemory *image_memory;
gboolean location_has_changed;
gint type_file; // 0 = No; 1 = PNG and 2 = JPEG
gint window_width, window_height;
gint image_width, image_height;
};
struct _GstGLOverlayClass

22
ext/gl/gstopengl.c
View file

@ -53,6 +53,11 @@
#if HAVE_GRAPHENE
#include "gstgltransformation.h"
#endif
#if HAVE_JPEG
#if HAVE_PNG
#include "gstgloverlay.h"
#endif /* HAVE_PNG */
#endif /* HAVE_JPEG */
#if GST_GL_HAVE_OPENGL
#include "gstgltestsrc.h"
@ -67,9 +72,6 @@
#if HAVE_PNG
#include "gstgldifferencematte.h"
#include "gstglbumper.h"
#if HAVE_JPEG
#include "gstgloverlay.h"
#endif /* HAVE_JPEG */
#endif /* HAVE_PNG */
#endif /* GST_GL_HAVE_OPENGL */
@ -133,6 +135,14 @@ plugin_init (GstPlugin * plugin)
GST_RANK_NONE, gst_gl_filtershader_get_type ())) {
return FALSE;
}
#if HAVE_JPEG
#if HAVE_PNG
if (!gst_element_register (plugin, "gloverlay",
GST_RANK_NONE, gst_gl_overlay_get_type ())) {
return FALSE;
}
#endif /* HAVE_PNG */
#endif /* HAVE_JPEG */
#if GST_GL_HAVE_OPENGL
if (!gst_element_register (plugin, "gltestsrc",
GST_RANK_NONE, GST_TYPE_GL_TEST_SRC)) {
@ -188,12 +198,6 @@ plugin_init (GstPlugin * plugin)
GST_RANK_NONE, gst_gl_bumper_get_type ())) {
return FALSE;
}
#if HAVE_JPEG
if (!gst_element_register (plugin, "gloverlay",
GST_RANK_NONE, gst_gl_overlay_get_type ())) {
return FALSE;
}
#endif /* HAVE_JPEG */
#endif /* HAVE_PNG */
#endif /* GST_GL_HAVE_OPENGL */