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egl: Add support for different orientations of the EGLImage

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The content of the EGLImages can be at least in GStreamer orientation,
meaning top line first in memory, or OpenGL orientation, meaning
bottom line first in memory.
This commit is contained in:
Sebastian Dröge 2013-03-13 11:29:45 +01:00
parent d5f15cf3a2
commit a373e75949
2 changed files with 37 additions and 0 deletions
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25
gst-libs/gst/egl/egl.c
View file

@ -34,6 +34,7 @@ typedef struct
GstEGLDisplay *display;
EGLImageKHR image;
GstEGLImageType type;
GstEGLImageOrientation orientation;
gpointer user_data;
GDestroyNotify user_data_destroy;
@ -90,6 +91,29 @@ gst_egl_image_memory_get_type (GstMemory * mem)
return GST_EGL_IMAGE_MEMORY (mem)->type;
}
GstEGLImageOrientation
gst_egl_image_memory_get_orientation (GstMemory *mem)
{
g_return_val_if_fail (gst_is_egl_image_memory (mem),
GST_EGL_IMAGE_MEMORY_TYPE_INVALID);
if (mem->parent)
mem = mem->parent;
return GST_EGL_IMAGE_MEMORY (mem)->orientation;
}
void
gst_egl_image_memory_set_orientation (GstMemory *mem, GstEGLImageOrientation orientation)
{
g_return_if_fail (gst_is_egl_image_memory (mem));
if (mem->parent)
mem = mem->parent;
GST_EGL_IMAGE_MEMORY (mem)->orientation = orientation;
}
static GstMemory *
gst_egl_image_allocator_alloc_vfunc (GstAllocator * allocator, gsize size,
GstAllocationParams * params)
@ -257,6 +281,7 @@ gst_egl_image_allocator_wrap (GstAllocator * allocator,
mem->display = gst_egl_display_ref (display);
mem->image = image;
mem->type = type;
mem->orientation = GST_EGL_IMAGE_ORIENTATION_X_NORMAL_Y_NORMAL;
mem->user_data = user_data;
mem->user_data_destroy = user_data_destroy;

12
gst-libs/gst/egl/egl.h
View file

@ -42,6 +42,16 @@ typedef enum {
GST_EGL_IMAGE_MEMORY_TYPE_OTHER = 0xffff
} GstEGLImageType;
typedef enum {
/* GStreamer orientation, top line first in memory, left row first */
GST_EGL_IMAGE_ORIENTATION_X_NORMAL_Y_NORMAL,
/* OpenGL orientation, bottom line first in memory, left row first */
GST_EGL_IMAGE_ORIENTATION_X_NORMAL_Y_FLIP,
/* Just for the sake of completeness, nothing uses this probably */
GST_EGL_IMAGE_ORIENTATION_X_FLIP_Y_NORMAL,
GST_EGL_IMAGE_ORIENTATION_X_FLIP_Y_FLIP
} GstEGLImageOrientation;
typedef struct _GstEGLDisplay GstEGLDisplay;
/* EGLImage GstMemory handling */
@ -50,6 +60,8 @@ gboolean gst_is_egl_image_memory (GstMemory * mem);
EGLImageKHR gst_egl_image_memory_get_image (GstMemory * mem);
GstEGLDisplay * gst_egl_image_memory_get_display (GstMemory * mem);
GstEGLImageType gst_egl_image_memory_get_type (GstMemory * mem);
GstEGLImageOrientation gst_egl_image_memory_get_orientation (GstMemory *mem);
void gst_egl_image_memory_set_orientation (GstMemory *mem, GstEGLImageOrientation orientation);
/* Generic EGLImage allocator that doesn't support mapping, copying or anything */
GstAllocator * gst_egl_image_allocator_obtain (void);