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[047/906] * sys/glsink/gltestsrc.c: * sys/glsink/gstglbuffer.c: * sys/glsink/gstglbuffer.h: * sys/glsink/gstgldownload.c: * sys/glsink/gstglfilter.c: * sys/glsink/gstglfilterexample.c: * sys/glsink/gstgltestsrc.c: * sys/glsink/gstglupload.c: Convert gldownload to BaseTransform. Make glfilterexample visually interesting. Add support for various formats to downloading. Fix a few places where we leak GL state to other elements (bad, but hard to prevent).

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This commit is contained in:
David Schleef 2007-12-27 04:15:26 +00:00 committed by Tim-Philipp Müller
parent 5e620c9673
commit 2a6bf50ba7
2 changed files with 40 additions and 5 deletions
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32
gst-libs/gst/gl/gstglbuffer.c
View file

@ -90,6 +90,9 @@ gst_gl_buffer_new (GstGLDisplay * display, GstGLBufferFormat format,
buffer->display = g_object_ref (display);
buffer->width = width;
buffer->height = height;
/* this is not strictly true, but it's used for compatibility with
* queue and BaseTransform */
GST_BUFFER_SIZE (buffer) = width * height * 4;
gst_gl_display_lock (buffer->display);
glGenTextures (1, &buffer->texture);
@ -129,6 +132,9 @@ gst_gl_buffer_new_from_data (GstGLDisplay * display, GstVideoFormat format,
buffer->display = g_object_ref (display);
buffer->width = width;
buffer->height = height;
/* this is not strictly true, but it's used for compatibility with
* queue and BaseTransform */
GST_BUFFER_SIZE (buffer) = width * height * 4;
gst_gl_display_lock (buffer->display);
glGenTextures (1, &buffer->texture);
@ -234,7 +240,7 @@ gst_gl_buffer_new_from_data (GstGLDisplay * display, GstVideoFormat format,
void
gst_gl_buffer_download (GstGLBuffer * buffer, void *data)
gst_gl_buffer_download (GstGLBuffer * buffer, GstVideoFormat format, void *data)
{
GLuint fbo;
@ -254,15 +260,33 @@ gst_gl_buffer_download (GstGLBuffer * buffer, void *data)
g_assert (glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT) ==
GL_FRAMEBUFFER_COMPLETE_EXT);
/* needs a reset function */
/* we need a reset function */
glMatrixMode (GL_COLOR);
glLoadIdentity ();
glPixelTransferf (GL_POST_COLOR_MATRIX_RED_BIAS, 0);
glPixelTransferf (GL_POST_COLOR_MATRIX_GREEN_BIAS, 0);
glPixelTransferf (GL_POST_COLOR_MATRIX_BLUE_BIAS, 0);
glReadPixels (0, 0, buffer->width, buffer->height, GL_RGBA,
GL_UNSIGNED_BYTE, data);
switch (format) {
case GST_VIDEO_FORMAT_RGBx:
glReadPixels (0, 0, buffer->width, buffer->height, GL_RGBA,
GL_UNSIGNED_BYTE, data);
break;
case GST_VIDEO_FORMAT_BGRx:
glReadPixels (0, 0, buffer->width, buffer->height, GL_BGRA,
GL_UNSIGNED_BYTE, data);
break;
case GST_VIDEO_FORMAT_xBGR:
glReadPixels (0, 0, buffer->width, buffer->height, GL_RGBA,
GL_UNSIGNED_INT_8_8_8_8, data);
break;
case GST_VIDEO_FORMAT_xRGB:
glReadPixels (0, 0, buffer->width, buffer->height, GL_BGRA,
GL_UNSIGNED_INT_8_8_8_8, data);
break;
default:
g_assert_not_reached ();
}
glDeleteFramebuffersEXT (1, &fbo);

13
gst-libs/gst/gl/gstglbuffer.h
View file

@ -44,7 +44,18 @@ GstGLBuffer * gst_gl_buffer_new (GstGLDisplay *display,
GstGLBufferFormat format, int width, int height);
GstGLBuffer * gst_gl_buffer_new_from_data (GstGLDisplay *display,
GstVideoFormat format, int width, int height, void *data);
void gst_gl_buffer_download (GstGLBuffer *buffer, void *data);
void gst_gl_buffer_download (GstGLBuffer *buffer, GstVideoFormat format,
void *data);
#define GST_GL_VIDEO_CAPS \
"video/x-raw-gl," \
"format=(int)[0,10]," \
"width=(int)[1,2048]," \
"height=(int)[1,2048]," \
"pixel-aspect-ratio=(fraction)1/1," \
"framerate=(fraction)[0/1,100/1]"
#endif