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gl/examples/sdl: update for the latest gstgl changes

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This commit is contained in:
Matthew Waters 2014-04-29 18:32:22 +10:00
parent 294da02a2f
commit 8ddb19e595
2 changed files with 42 additions and 29 deletions
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8
tests/examples/gl/sdl/Makefile.am
View file

@ -8,8 +8,12 @@ noinst_PROGRAMS += sdlshare
sdlshare_SOURCES = sdlshare.c
sdlshare_CFLAGS=$(GST_PLUGINS_GL_CFLAGS) $(GST_CFLAGS) \
$(GL_CFLAGS) $(SDL_CFLAGS)
$(GL_CFLAGS) $(SDL_CFLAGS) \
-I$(top_srcdir)/gst-libs \
-I$(top_builddir)/gst-libs
sdlshare_LDADD=$(GST_PLUGINS_GL_LIBS) $(GST_LIBS) \
$(GL_LIBS) $(SDL_LIBS)
$(GL_LIBS) $(SDL_LIBS) \
$(top_builddir)/gst-libs/gst/gl/libgstgl-$(GST_API_VERSION).la \
-lgstvideo-$(GST_API_VERSION)
endif

63
tests/examples/gl/sdl/sdlshare.c
View file

@ -33,23 +33,11 @@
#ifndef WIN32
#include <GL/glx.h>
#include "SDL/SDL_syswm.h"
#include <gst/gl/x11/gstgldisplay_x11.h>
#endif
#include <gst/gst.h>
/* hack */
typedef struct _GstGLBuffer GstGLBuffer;
struct _GstGLBuffer
{
GstBuffer buffer;
GObject *obj;
gint width;
gint height;
GLuint texture;
};
#include <gst/gl/gl.h>
/* rotation angle for the triangle. */
float rtri = 0.0f;
@ -78,11 +66,20 @@ InitGL (int Width, int Height) // We call this right after our OpenGL window is
/* The main drawing function. */
static void
DrawGLScene (GstGLBuffer * gst_gl_buf)
DrawGLScene (GstBuffer * buf)
{
GLuint texture = gst_gl_buf->texture;
GLfloat width = (GLfloat) gst_gl_buf->width;
GLfloat height = (GLfloat) gst_gl_buf->height;
GstVideoFrame v_frame;
GstVideoInfo v_info;
guint texture;
gst_video_info_set_format (&v_info, GST_VIDEO_FORMAT_RGBA, 320, 240);
if (!gst_video_frame_map (&v_frame, &v_info, buf, GST_MAP_READ | GST_MAP_GL)) {
g_warning ("Failed to map the video buffer");
return;
}
texture = *(guint *) v_frame.data[0];
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear The Screen And The Depth Buffer
glLoadIdentity (); // Reset The View
@ -115,11 +112,11 @@ DrawGLScene (GstGLBuffer * gst_gl_buf)
// draw a square (quadrilateral)
glColor3f (0.5f, 0.5f, 1.0f); // set color to a blue shade.
glBegin (GL_QUADS); // start drawing a polygon (4 sided)
glTexCoord3f (0.0f, height, 0.0f);
glTexCoord3f (0.0f, 1.0f, 0.0f);
glVertex3f (-1.0f, 1.0f, 0.0f); // Top Left
glTexCoord3f (width, height, 0.0f);
glTexCoord3f (1.0f, 1.0f, 0.0f);
glVertex3f (1.0f, 1.0f, 0.0f); // Top Right
glTexCoord3f (width, 0.0f, 0.0f);
glTexCoord3f (1.0f, 0.0f, 0.0f);
glVertex3f (1.0f, -1.0f, 0.0f); // Bottom Right
glTexCoord3f (0.0f, 0.0f, 0.0f);
glVertex3f (-1.0f, -1.0f, 0.0f); // Bottom Left
@ -146,7 +143,7 @@ update_sdl_scene (void *fk)
GAsyncQueue *queue_output_buf =
(GAsyncQueue *) g_object_get_data (G_OBJECT (fakesink),
"queue_output_buf");
GstGLBuffer *gst_gl_buf = (GstGLBuffer *) g_async_queue_pop (queue_input_buf);
GstBuffer *buf = (GstBuffer *) g_async_queue_pop (queue_input_buf);
SDL_Event event;
while (SDL_PollEvent (&event)) {
@ -160,10 +157,10 @@ update_sdl_scene (void *fk)
}
}
DrawGLScene (gst_gl_buf);
DrawGLScene (buf);
/* push buffer so it can be unref later */
g_async_queue_push (queue_output_buf, gst_gl_buf);
g_async_queue_push (queue_output_buf, buf);
return FALSE;
}
@ -204,7 +201,7 @@ end_stream_cb (GstBus * bus, GstMessage * msg, GMainLoop * loop)
case GST_MESSAGE_EOS:
g_print ("End-of-stream\n");
g_print
("For more information, try to run: GST_DEBUG=gldisplay:2 ./sdlshare\n");
("For more information, try to run: GST_DEBUG=gl*:3 ./sdlshare\n");
break;
case GST_MESSAGE_ERROR:
@ -254,6 +251,9 @@ main (int argc, char **argv)
GstState state;
GAsyncQueue *queue_input_buf = NULL;
GAsyncQueue *queue_output_buf = NULL;
GstGLDisplay *display;
GstGLContext *sdl_context;
const gchar *platform;
/* Initialize SDL for video output */
if (SDL_Init (SDL_INIT_VIDEO) < 0) {
@ -283,15 +283,25 @@ main (int argc, char **argv)
sdl_gl_context = wglGetCurrentContext ();
sdl_dc = wglGetCurrentDC ();
wglMakeCurrent (0, 0);
platform = "wgl";
display = gst_gl_display_new ();
#else
SDL_VERSION (&info.version);
SDL_GetWMInfo (&info);
/* FIXME: This display is different to the one that SDL uses to create the
* GL context inside SDL_SetVideoMode() above which fails on Intel hardware
*/
sdl_display = info.info.x11.display;
sdl_win = info.info.x11.window;
sdl_gl_context = glXGetCurrentContext ();
glXMakeCurrent (sdl_display, None, 0);
platform = "glx";
display = (GstGLDisplay *) gst_gl_display_x11_new_with_display (sdl_display);
#endif
sdl_context = gst_gl_context_new_wrapped (display, (guintptr) sdl_gl_context,
gst_gl_platform_from_string (platform), GST_GL_API_OPENGL);
pipeline =
GST_PIPELINE (gst_parse_launch
("videotestsrc ! video/x-raw, width=320, height=240, framerate=(fraction)30/1 ! "
@ -306,8 +316,7 @@ main (int argc, char **argv)
/* sdl_gl_context is an external OpenGL context with which gst-plugins-gl want to share textures */
glfilter = gst_bin_get_by_name (GST_BIN (pipeline), "gleffects0");
g_object_set (G_OBJECT (glfilter), "external-opengl-context",
sdl_gl_context, NULL);
g_object_set (G_OBJECT (glfilter), "other-context", sdl_context, NULL);
gst_object_unref (glfilter);
/* NULL to PAUSED state pipeline to make sure the gst opengl context is created and