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[082/906] glfilter can request, use and reject a FBO (step 1)

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git-svn-id: svn://svn.wobow.com/GStreamer_playground/gst-plugins-gl@494 93df14bb-0f41-7a43-8087-d3e2a2f0e464
This commit is contained in:
Julien Isorce 2008-06-07 15:27:12 +00:00 committed by Tim-Philipp Müller
parent d01ae3ed0b
commit f580bb77f4
2 changed files with 164 additions and 3 deletions
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139
gst-libs/gst/gl/gstgldisplay.c
View file

@ -29,6 +29,8 @@ static void gst_gl_display_finalize (GObject * object);
static gpointer gst_gl_display_glutThreadFunc (GstGLDisplay* display);
static void gst_gl_display_glutCreateWindow (GstGLDisplay* display);
static void gst_gl_display_glutGenerateFBO (GstGLDisplay *display);
static void gst_gl_display_glutUseFBO (GstGLDisplay *display);
static void gst_gl_display_glutDestroyFBO (GstGLDisplay *display);
static void gst_gl_display_glutDestroyWindow (GstGLDisplay* display);
static void gst_gl_display_glutSetVisibleWindow (GstGLDisplay* display);
static void gst_gl_display_glutPrepareTexture (GstGLDisplay* display);
@ -95,6 +97,8 @@ gst_gl_display_init (GstGLDisplay *display, GstGLDisplayClass *klass)
display->cond_clear = g_cond_new ();
display->cond_video = g_cond_new ();
display->cond_generateFBO = g_cond_new ();
display->cond_useFBO = g_cond_new ();
display->cond_destroyFBO = g_cond_new ();
display->cond_create = g_cond_new ();
display->cond_destroy = g_cond_new ();
@ -113,6 +117,18 @@ gst_gl_display_init (GstGLDisplay *display, GstGLDisplayClass *klass)
display->requestedTextureFBO = 0;
display->requestedTextureFBOWidth = 0;
display->requestedTextureFBOHeight = 0;
display->usedFBO = 0;
display->usedDepthBuffer = 0;
display->usedTextureFBO = 0;
display->usedTextureFBOWidth = 0;
display->usedTextureFBOHeight = 0;
display->glsceneFBO_cb = NULL;
display->inputTextureWidth = 0;
display->inputTextureHeight = 0;
display->inputTexture = 0;
display->rejectedFBO = 0;
display->rejectedDepthBuffer = 0;
display->rejectedTextureFBO = 0;
display->requestedTexture = 0;
display->requestedTexture_u = 0;
@ -338,6 +354,14 @@ gst_gl_display_finalize (GObject *object)
g_cond_free (display->cond_generateFBO);
display->cond_generateFBO = NULL;
}
if (display->cond_useFBO) {
g_cond_free (display->cond_useFBO);
display->cond_useFBO = NULL;
}
if (display->cond_destroyFBO) {
g_cond_free (display->cond_destroyFBO);
display->cond_destroyFBO = NULL;
}
if (display->cond_create) {
g_cond_free (display->cond_create);
display->cond_create = NULL;
@ -350,6 +374,8 @@ gst_gl_display_finalize (GObject *object)
display->clientReshapeCallback = NULL;
if (display->clientDrawCallback)
display->clientDrawCallback = NULL;
if (display->glsceneFBO_cb)
display->glsceneFBO_cb = NULL;
//at this step, the next condition imply that the last display has been pushed
if (g_hash_table_size (gst_gl_display_map) == 0)
@ -701,7 +727,73 @@ gst_gl_display_glutGenerateFBO (GstGLDisplay *display)
//unbind the FBO
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
g_cond_signal (display->cond_video);
g_cond_signal (display->cond_generateFBO);
}
/* Called by the idle funtion */
static void
gst_gl_display_glutUseFBO (GstGLDisplay *display)
{
glutSetWindow (display->glutWinId);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, display->usedFBO);
glPushAttrib(GL_VIEWPORT_BIT);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
gluPerspective(45, (gfloat)display->usedTextureFBOWidth/(gfloat)display->usedTextureFBOHeight, 0.1, 100);
//gluOrtho2D(0.0, display->usedTextureFBOWidth, 0.0, display->usedTextureFBOHeight);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glViewport(0, 0, display->usedTextureFBOWidth, display->usedTextureFBOHeight);
glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
glClearColor(0.0, 0.0, 0.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//the opengl scene
display->glsceneFBO_cb (display->inputTextureWidth, display->inputTextureHeight, display->inputTexture);
glDrawBuffer(GL_NONE);
glUseProgramObjectARB (0);
glDisable(GL_TEXTURE_RECTANGLE_ARB);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopAttrib();
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
g_cond_signal (display->cond_useFBO);
}
/* Called by the idle funtion */
static void
gst_gl_display_glutDestroyFBO (GstGLDisplay *display)
{
glutSetWindow (display->glutWinId);
glDeleteFramebuffersEXT (1, &display->rejectedFBO);
glDeleteRenderbuffersEXT(1, &display->rejectedDepthBuffer);
glDeleteTextures (1, &display->rejectedTextureFBO);
display->rejectedFBO = 0;
display->rejectedDepthBuffer = 0;
display->rejectedTextureFBO = 0;
g_cond_signal (display->cond_destroyFBO);
}
@ -903,6 +995,12 @@ gst_gl_display_glutDispatchAction (GstGLDisplayMsg* msg)
case GST_GL_DISPLAY_ACTION_GENFBO:
gst_gl_display_glutGenerateFBO (msg->display);
break;
case GST_GL_DISPLAY_ACTION_DELFBO:
gst_gl_display_glutDestroyFBO (msg->display);
break;
case GST_GL_DISPLAY_ACTION_USEFBO:
gst_gl_display_glutUseFBO (msg->display);
break;
default:
g_assert_not_reached ();
}
@ -930,6 +1028,8 @@ gst_gl_display_checkMsgValidity (GstGLDisplayMsg *msg)
case GST_GL_DISPLAY_ACTION_VIDEO:
case GST_GL_DISPLAY_ACTION_REDISPLAY:
case GST_GL_DISPLAY_ACTION_GENFBO:
case GST_GL_DISPLAY_ACTION_DELFBO:
case GST_GL_DISPLAY_ACTION_USEFBO:
//msg is out of date if the associated display is not in the map
if (!g_hash_table_lookup (gst_gl_display_map, GINT_TO_POINTER (msg->glutWinId)))
valid = FALSE;
@ -1154,6 +1254,43 @@ gst_gl_display_requestFBO (GstGLDisplay* display, gint width, gint height,
}
/* Called by gst_gl elements */
void
gst_gl_display_useFBO (GstGLDisplay* display, gint textureFBOWidth, gint textureFBOheight,
guint fbo, guint depthbuffer, guint textureFBO, GLCB cb,
guint inputTextureWidth, guint inputTextureHeight, guint inputTexture)
{
gst_gl_display_lock (display);
display->usedFBO = fbo;
display->usedDepthBuffer = depthbuffer;
display->usedTextureFBO = textureFBO;
display->usedTextureFBOWidth = textureFBOWidth;
display->usedTextureFBOHeight = textureFBOheight;
display->glsceneFBO_cb = cb;
display->inputTextureWidth = inputTextureWidth;
display->inputTextureHeight = inputTextureHeight;
display->inputTexture = inputTexture;
gst_gl_display_postMessage (GST_GL_DISPLAY_ACTION_USEFBO, display);
g_cond_wait (display->cond_useFBO, display->mutex);
gst_gl_display_unlock (display);
}
/* Called by gst_gl elements */
void
gst_gl_display_rejectFBO (GstGLDisplay* display, guint fbo,
guint depthbuffer, guint texture)
{
gst_gl_display_lock (display);
display->rejectedFBO = fbo;
display->rejectedDepthBuffer = depthbuffer;
display->rejectedTextureFBO = texture;
gst_gl_display_postMessage (GST_GL_DISPLAY_ACTION_DELFBO, display);
g_cond_wait (display->cond_destroyFBO, display->mutex);
gst_gl_display_unlock (display);
}
/* Called by gst_gl elements */
void
gst_gl_display_set_windowId (GstGLDisplay* display, gulong winId)

28
gst-libs/gst/gl/gstgldisplay.h
View file

@ -51,7 +51,9 @@ typedef enum {
GST_GL_DISPLAY_ACTION_CLEAR,
GST_GL_DISPLAY_ACTION_VIDEO,
GST_GL_DISPLAY_ACTION_REDISPLAY,
GST_GL_DISPLAY_ACTION_GENFBO
GST_GL_DISPLAY_ACTION_GENFBO,
GST_GL_DISPLAY_ACTION_DELFBO,
GST_GL_DISPLAY_ACTION_USEFBO
} GstGLDisplayAction;
@ -76,6 +78,9 @@ typedef struct _GstGLDisplayTex {
typedef void (* CRCB) ( GLuint, GLuint );
typedef gboolean (* CDCB) ( GLuint, GLuint, GLuint);
//opengl scene callback
typedef void (* GLCB) ( GLuint, GLuint, GLuint);
struct _GstGLDisplay {
GObject object;
@ -88,6 +93,8 @@ struct _GstGLDisplay {
GCond* cond_clear;
GCond* cond_video;
GCond* cond_generateFBO;
GCond* cond_useFBO;
GCond* cond_destroyFBO;
GCond* cond_create;
GCond* cond_destroy;
@ -119,6 +126,18 @@ struct _GstGLDisplay {
GLuint requestedTextureFBO;
GLuint requestedTextureFBOWidth;
GLuint requestedTextureFBOHeight;
GLuint usedFBO;
GLuint usedDepthBuffer;
GLuint usedTextureFBO;
GLuint usedTextureFBOWidth;
GLuint usedTextureFBOHeight;
GLCB glsceneFBO_cb;
GLuint inputTextureWidth;
GLuint inputTextureHeight;
GLuint inputTexture;
GLuint rejectedFBO;
GLuint rejectedDepthBuffer;
GLuint rejectedTextureFBO;
GLuint requestedTexture;
GLuint requestedTexture_u;
@ -196,7 +215,7 @@ GType gst_gl_display_get_type (void);
//------------------------------------------------------------
//-------------------- Public d<EFBFBD>clarations ------------------
//-------------------- Public declarations ------------------
//------------------------------------------------------------
GstGLDisplay *gst_gl_display_new (void);
void gst_gl_display_initGLContext (GstGLDisplay* display,
@ -222,6 +241,11 @@ void gst_gl_display_videoChanged (GstGLDisplay* display, GstVideoFormat video_fo
gboolean gst_gl_display_postRedisplay (GstGLDisplay* display);
void gst_gl_display_requestFBO (GstGLDisplay* display, gint width, gint height,
guint* fbo, guint* depthbuffer, guint* texture);
void gst_gl_display_useFBO (GstGLDisplay* display, gint textureFBOWidth, gint textureFBOheight,
guint fbo, guint depthbuffer, guint textureFBO, GLCB cb,
guint inputTextureWidth, guint inputTextureHeight, guint inputTexture);
void gst_gl_display_rejectFBO (GstGLDisplay* display, guint fbo,
guint depthbuffer, guint texture);
void gst_gl_display_set_windowId (GstGLDisplay* display, gulong winId);
#endif