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gl: document some GL caps specifics

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Fixes: https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/issues/854
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/996>
This commit is contained in:
Matthew Waters 2021-01-05 20:18:24 +11:00 committed by GStreamer Merge Bot
parent 89bd37f24e
commit f573d91237
3 changed files with 17 additions and 2 deletions
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10
gst-libs/gst/gl/gstgl_enums.h
View file

@ -24,9 +24,17 @@
/**
* GstGLTextureTarget:
* @GST_GL_TEXTURE_TARGET_NONE: no texture target
* @GST_GL_TEXTURE_TARGET_2D: 2D texture target
* @GST_GL_TEXTURE_TARGET_2D: 2D texture target (`GL_TEXTURE_2D`)
* @GST_GL_TEXTURE_TARGET_RECTANGLE: rectangle texture target
* (`GL_TEXTURE_RECTANGLE`)
* @GST_GL_TEXTURE_TARGET_EXTERNAL_OES: external oes texture target
* (`GL_TEXTURE_EXTERNAL_OES`)
*
* The OpenGL texture target that an OpenGL texture can be bound to. The
* gst_gl_value_set_texture_target_from_mask(),
* gst_gl_value_get_texture_target_mask(), and
* gst_gl_value_set_texture_target() functions can be used for handling texture
* targets with #GValue's when e.g. dealing with #GstCaps.
*
* Since: 1.8
*/

6
gst-libs/gst/gl/gstglmemory.c
View file

@ -43,6 +43,12 @@
* with #GstGLVideoAllocationParams.
*
* Data is uploaded or downloaded from the GPU as is necessary.
*
* The #GstCaps that is used for #GstGLMemory based buffers should contain
* the %GST_CAPS_FEATURE_MEMORY_GL_MEMORY as a #GstCapsFeatures and should
* contain a 'texture-target' field with one of the #GstGLTextureTarget values
* as a string, i.e. some combination of 'texture-target=(string){2D,
* rectangle, external-oes}'.
*/
#define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))

3
gst-libs/gst/gl/gstglutils.c
View file

@ -661,7 +661,8 @@ gst_gl_get_plane_start (GstVideoInfo * info, GstVideoAlignment * valign,
*
* See gst_gl_value_set_texture_target_from_mask() for what entails a mask
*
* Returns: the mask of #GstGLTextureTarget's in @value
* Returns: the mask of #GstGLTextureTarget's in @value or
* %GST_GL_TEXTURE_TARGET_NONE on failure
*/
GstGLTextureTarget
gst_gl_value_get_texture_target_mask (const GValue * targets)