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[142/906] Add a generic action to be able to execute arbitrary gl code within the gl thread with less pain

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This commit is contained in:
Filippo Argiolas 2008-08-11 09:00:40 +02:00 committed by Matthew Waters
parent 77c0b28031
commit 396afd5ef3
3 changed files with 58 additions and 0 deletions
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28
gst-libs/gst/gl/gstgldisplay.c
View file

@ -41,6 +41,7 @@ static void gst_gl_display_thread_change_context (GstGLDisplay* display);
static void gst_gl_display_thread_set_visible_context (GstGLDisplay* display);
static void gst_gl_display_thread_resize_context (GstGLDisplay* display);
static void gst_gl_display_thread_redisplay (GstGLDisplay* display);
static void gst_gl_display_thread_run_generic (GstGLDisplay *display);
static void gst_gl_display_thread_gen_texture (GstGLDisplay* display);
static void gst_gl_display_thread_del_texture (GstGLDisplay* display);
static void gst_gl_display_thread_init_upload (GstGLDisplay* display);
@ -122,6 +123,7 @@ gst_gl_display_init (GstGLDisplay *display, GstGLDisplayClass *klass)
display->cond_create_context = g_cond_new ();
display->cond_destroy_context = g_cond_new ();
display->cond_change_context = g_cond_new ();
display->cond_generic = g_cond_new ();
display->cond_gen_texture = g_cond_new ();
display->cond_del_texture = g_cond_new ();
display->cond_init_upload = g_cond_new ();
@ -419,6 +421,10 @@ gst_gl_display_finalize (GObject* object)
g_cond_free (display->cond_gen_texture);
display->cond_gen_texture = NULL;
}
if (display->cond_gen_texture) {
g_cond_free (display->cond_gen_texture);
display->cond_gen_texture = NULL;
}
if (display->cond_change_context) {
g_cond_free (display->cond_change_context);
display->cond_change_context = NULL;
@ -539,6 +545,9 @@ gst_gl_display_thread_dispatch_action (GstGLDisplayMsg* msg)
case GST_GL_DISPLAY_ACTION_REDISPLAY_CONTEXT:
gst_gl_display_thread_redisplay (msg->display);
break;
case GST_GL_DISPLAY_ACTION_GENERIC:
gst_gl_display_thread_run_generic (msg->display);
break;
case GST_GL_DISPLAY_ACTION_GEN_TEXTURE:
gst_gl_display_thread_gen_texture (msg->display);
break;
@ -598,6 +607,7 @@ gst_gl_display_thread_check_msg_validity (GstGLDisplayMsg *msg)
case GST_GL_DISPLAY_ACTION_VISIBLE_CONTEXT:
case GST_GL_DISPLAY_ACTION_RESIZE_CONTEXT:
case GST_GL_DISPLAY_ACTION_REDISPLAY_CONTEXT:
case GST_GL_DISPLAY_ACTION_GENERIC:
case GST_GL_DISPLAY_ACTION_GEN_TEXTURE:
case GST_GL_DISPLAY_ACTION_DEL_TEXTURE:
case GST_GL_DISPLAY_ACTION_INIT_UPLOAD:
@ -889,6 +899,13 @@ gst_gl_display_thread_redisplay (GstGLDisplay * display)
glutPostRedisplay ();
}
static void
gst_gl_display_thread_run_generic (GstGLDisplay *display)
{
glutSetWindow (display->glutWinId);
display->generic_callback (display, display->data);
g_cond_signal (display->cond_generic);
}
/* Called in the gl thread */
static void
@ -1870,6 +1887,17 @@ gst_gl_display_redisplay (GstGLDisplay* display, GLuint texture, gint width , gi
return isAlive;
}
void
gst_gl_display_thread_add (GstGLDisplay *display,
GstGLDisplayThreadFunc func, gpointer data)
{
gst_gl_display_lock (display);
display->data = data;
display->generic_callback = func;
gst_gl_display_post_message (GST_GL_DISPLAY_ACTION_GENERIC, display);
g_cond_wait (display->cond_generic, display->mutex);
gst_gl_display_unlock (display);
}
/* Called by gst_gl_buffer_new */
void

11
gst-libs/gst/gl/gstgldisplay.h
View file

@ -66,6 +66,7 @@ typedef enum {
GST_GL_DISPLAY_ACTION_VISIBLE_CONTEXT,
GST_GL_DISPLAY_ACTION_RESIZE_CONTEXT,
GST_GL_DISPLAY_ACTION_REDISPLAY_CONTEXT,
GST_GL_DISPLAY_ACTION_GENERIC,
GST_GL_DISPLAY_ACTION_GEN_TEXTURE,
GST_GL_DISPLAY_ACTION_DEL_TEXTURE,
GST_GL_DISPLAY_ACTION_INIT_UPLOAD,
@ -99,6 +100,8 @@ typedef struct _GstGLDisplayTex {
typedef void (* CRCB) ( GLuint, GLuint );
typedef gboolean (* CDCB) ( GLuint, GLuint, GLuint);
typedef void (* GstGLDisplayThreadFunc) (GstGLDisplay *display, gpointer data);
//opengl scene callback
typedef void (* GLCB) ( gint, gint, guint, gpointer stuff);
@ -122,6 +125,7 @@ struct _GstGLDisplay {
GCond* cond_create_context;
GCond* cond_destroy_context;
GCond* cond_change_context;
GCond* cond_generic;
GCond* cond_gen_texture;
GCond* cond_del_texture;
GCond* cond_init_upload;
@ -134,6 +138,10 @@ struct _GstGLDisplay {
GCond* cond_gen_shader;
GCond* cond_del_shader;
//generic gl code
GstGLDisplayThreadFunc generic_callback;
gpointer data;
//action redisplay
GLuint redisplay_texture;
GLuint redisplay_texture_width;
@ -258,6 +266,9 @@ void gst_gl_display_set_visible_context (GstGLDisplay* display, gboolean visible
void gst_gl_display_resize_context (GstGLDisplay* display, gint width, gint height);
gboolean gst_gl_display_redisplay (GstGLDisplay* display, GLuint texture, gint width, gint height);
void gst_gl_display_thread_add (GstGLDisplay *display,
GstGLDisplayThreadFunc func, gpointer data);
void gst_gl_display_gen_texture (GstGLDisplay* display, GLuint* pTexture);
void gst_gl_display_del_texture (GstGLDisplay* display, GLuint texture);

19
gst/gl/gstglfilterblur.c
View file

@ -196,6 +196,22 @@ gst_gl_filterblur_draw_texture (GstGLFilterBlur * filterblur, GLuint tex)
glEnd ();
}
static void
change_view (GstGLDisplay *display, gpointer data)
{
// GstGLFilterBlur *filterblur = GST_GL_FILTERBLUR (data);
const double mirrormatrix[16] = {
-1.0, 0.0, 0.0, 0.0,
0.0, 1.0, 0.0, 0.0,
0.0, 0.0, 1.0, 0.0,
0.0, 0.0, 0.0, 1.0
};
glMatrixMode (GL_MODELVIEW);
glLoadMatrixd (mirrormatrix);
}
static gboolean
gst_gl_filterblur_filter (GstGLFilter* filter, GstGLBuffer* inbuf,
GstGLBuffer* outbuf)
@ -208,6 +224,9 @@ gst_gl_filterblur_filter (GstGLFilter* filter, GstGLBuffer* inbuf,
gst_gl_filter_render_to_target (filter, inbuf->texture, midtexture,
gst_gl_filterblur_hcallback, filterblur);
gst_gl_display_thread_add (filter->display, change_view, filterblur);
gst_gl_filter_render_to_target (filter, midtexture, outbuf->texture,
gst_gl_filterblur_vcallback, filterblur);