static gboolean
gst_vaapi_texture_upload (GstVideoGLTextureUploadMeta * meta,
guint texture_id[4])
{
GstVaapiVideoMeta *const vmeta =
gst_buffer_get_vaapi_video_meta (meta->buffer);
GstVaapiVideoMetaTexture *const meta_texture = meta->user_data;
GstVaapiSurfaceProxy *const proxy =
gst_vaapi_video_meta_get_surface_proxy (vmeta);
GstVaapiSurface *const surface = gst_vaapi_surface_proxy_get_surface (proxy);
GstVaapiDisplay *const dpy = GST_VAAPI_OBJECT_DISPLAY (surface);
if (!gst_vaapi_display_has_opengl (dpy))
return FALSE;
if (!meta_texture->texture ||
/* Check whether VA display changed */
GST_VAAPI_OBJECT_DISPLAY (meta_texture->texture) != dpy ||
/* Check whether texture id changed */
gst_vaapi_texture_get_id (meta_texture->texture) != texture_id[0]) {
/* FIXME: should we assume target? */
GstVaapiTexture *const texture =
gst_vaapi_texture_new_wrapped (dpy, texture_id[0],
GL_TEXTURE_2D, meta_texture->gl_format, meta_texture->width,
meta_texture->height);
gst_vaapi_texture_replace (&meta_texture->texture, texture);
if (!texture)
return FALSE;
gst_vaapi_texture_unref (texture);
}
gst_vaapi_texture_set_orientation_flags (meta_texture->texture,
get_texture_orientation_flags (meta->texture_orientation));
return gst_vaapi_texture_put_surface (meta_texture->texture, surface,
gst_vaapi_surface_proxy_get_crop_rect (proxy),
gst_vaapi_video_meta_get_render_flags (vmeta));
}
int
main(int argc, char *argv[])
{
GstVaapiDisplay *display;
GstVaapiWindow *window;
GstVaapiWindowGLX *glx_window;
GstVaapiSurface *surface;
GstVaapiImage *image;
GstVaapiTexture *textures[2];
GstVaapiTexture *texture;
GLuint texture_id;
GstVaapiRectangle src_rect;
GstVaapiRectangle dst_rect;
guint flags = GST_VAAPI_PICTURE_STRUCTURE_FRAME;
static const GstVaapiChromaType chroma_type = GST_VAAPI_CHROMA_TYPE_YUV420;
static const guint width = 320;
static const guint height = 240;
static const guint win_width = 640;
static const guint win_height = 480;
gst_init(&argc, &argv);
display = gst_vaapi_display_glx_new(NULL);
if (!display)
g_error("could not create VA display");
surface = gst_vaapi_surface_new(display, chroma_type, width, height);
if (!surface)
g_error("could not create VA surface");
image = image_generate(display, GST_VAAPI_IMAGE_NV12, width, height);
if (!image)
g_error("could not create VA image");
if (!image_upload(image, surface))
g_error("could not upload VA image to surface");
window = gst_vaapi_window_glx_new(display, win_width, win_height);
if (!window)
g_error("could not create window");
glx_window = GST_VAAPI_WINDOW_GLX(window);
gst_vaapi_window_show(window);
if (!gst_vaapi_window_glx_make_current(glx_window))
g_error("coult not bind GL context");
g_print("#\n");
g_print("# Create texture with gst_vaapi_texture_new()\n");
g_print("#\n");
{
texture = gst_vaapi_texture_new(
display,
GL_TEXTURE_2D,
GL_RGBA,
width,
height
);
if (!texture)
g_error("could not create VA texture");
textures[0] = texture;
texture_id = gst_vaapi_texture_get_id(texture);
if (!gst_vaapi_texture_put_surface(texture, surface, flags))
g_error("could not transfer VA surface to texture");
if (!gst_vaapi_window_glx_put_texture(glx_window, texture, NULL, NULL))
g_error("could not render texture into the window");
}
g_print("#\n");
g_print("# Create texture with gst_vaapi_texture_new_with_texture()\n");
g_print("#\n");
{
const GLenum target = GL_TEXTURE_2D;
const GLenum format = GL_BGRA;
glEnable(target);
glGenTextures(1, &texture_id);
glBindTexture(target, texture_id);
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glTexImage2D(
target,
0,
GL_RGBA8,
width, height,
0,
format,
GL_UNSIGNED_BYTE,
NULL
);
glDisable(target);
texture = gst_vaapi_texture_new_with_texture(
display,
texture_id,
target,
format
);
if (!texture)
g_error("could not create VA texture");
if (texture_id != gst_vaapi_texture_get_id(texture))
g_error("invalid texture id");
if (gl_get_current_texture_2d() != texture_id)
g_error("gst_vaapi_texture_new_with_texture() altered texture bindings");
textures[1] = texture;
if (!gst_vaapi_texture_put_surface(texture, surface, flags))
g_error("could not transfer VA surface to texture");
if (gl_get_current_texture_2d() != texture_id)
g_error("gst_vaapi_texture_put_surface() altered texture bindings");
src_rect.x = 0;
src_rect.y = 0;
src_rect.width = width;
src_rect.height = height;
dst_rect.x = win_width/2;
dst_rect.y = win_height/2;
dst_rect.width = win_width/2;
dst_rect.height = win_height/2;
if (!gst_vaapi_window_glx_put_texture(glx_window, texture,
&src_rect, &dst_rect))
g_error("could not render texture into the window");
if (gl_get_current_texture_2d() != texture_id)
g_error("gst_vaapi_window_glx_put_texture() altered texture bindings");
}
gst_vaapi_window_glx_swap_buffers(glx_window);
pause();
g_object_unref(textures[0]);
g_object_unref(textures[1]);
glDeleteTextures(1, &texture_id);
g_object_unref(window);
g_object_unref(display);
gst_deinit();
return 0;
}