static void
_upload_memory (GstGLMemory * gl_mem, GstMapInfo * info, gsize maxsize)
{
GstGLContext *context = gl_mem->mem.context;
const GstGLFuncs *gl;
GLenum gl_format, gl_type, gl_target;
gpointer data;
gsize plane_start;
if ((gl_mem->transfer_state & GST_GL_MEMORY_TRANSFER_NEED_UPLOAD) == 0)
return;
gl = context->gl_vtable;
gl_type = GL_UNSIGNED_BYTE;
if (gl_mem->tex_type == GST_VIDEO_GL_TEXTURE_TYPE_RGB16)
gl_type = GL_UNSIGNED_SHORT_5_6_5;
gl_format = gst_gl_format_from_gl_texture_type (gl_mem->tex_type);
gl_target = gl_mem->tex_target;
if (USING_OPENGL (context) || USING_GLES3 (context)
|| USING_OPENGL3 (context)) {
gl->PixelStorei (GL_UNPACK_ROW_LENGTH, gl_mem->unpack_length);
} else if (USING_GLES2 (context)) {
gl->PixelStorei (GL_UNPACK_ALIGNMENT, gl_mem->unpack_length);
}
GST_LOG ("upload for texture id:%u, with pbo %u %ux%u",
gl_mem->tex_id, gl_mem->mem.id, gl_mem->tex_width,
GL_MEM_HEIGHT (gl_mem));
/* find the start of the plane data including padding */
plane_start = _find_plane_frame_start (gl_mem);
if (gl_mem->mem.id && CONTEXT_SUPPORTS_PBO_UPLOAD (context)) {
gl->BindBuffer (GL_PIXEL_UNPACK_BUFFER, gl_mem->mem.id);
data = (void *) plane_start;
} else {
data = (gpointer) ((gintptr) plane_start + (gintptr) gl_mem->mem.data);
}
gl->BindTexture (gl_target, gl_mem->tex_id);
gl->TexSubImage2D (gl_target, 0, 0, 0, gl_mem->tex_width,
GL_MEM_HEIGHT (gl_mem), gl_format, gl_type, data);
if (gl_mem->mem.id && CONTEXT_SUPPORTS_PBO_UPLOAD (context))
gl->BindBuffer (GL_PIXEL_UNPACK_BUFFER, 0);
/* Reset to default values */
if (USING_OPENGL (context) || USING_GLES3 (context)) {
gl->PixelStorei (GL_UNPACK_ROW_LENGTH, 0);
} else if (USING_GLES2 (context)) {
gl->PixelStorei (GL_UNPACK_ALIGNMENT, 4);
}
gl->BindTexture (gl_target, 0);
gl_mem->transfer_state &= ~GST_GL_MEMORY_TRANSFER_NEED_UPLOAD;
}
static gpointer
_gl_mem_map_gpu_access (GstGLMemoryPBO * gl_mem, GstMapInfo * info, gsize size)
{
gpointer data = &gl_mem->mem.tex_id;
if ((info->flags & GST_MAP_READ) == GST_MAP_READ) {
if (gl_mem->pbo && CONTEXT_SUPPORTS_PBO_UPLOAD (gl_mem->mem.mem.context)) {
GstMapInfo pbo_info;
/* data -> pbo */
if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), &pbo_info,
GST_MAP_READ | GST_MAP_GL)) {
GST_CAT_ERROR (GST_CAT_GL_MEMORY, "Failed to map pbo");
return NULL;
}
/* pbo -> texture */
_upload_pbo_memory (gl_mem, info, gl_mem->pbo, &pbo_info);
gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &pbo_info);
} else {
GstGLMemoryAllocatorClass *alloc_class;
alloc_class = GST_GL_MEMORY_ALLOCATOR_CLASS (parent_class);
data = alloc_class->map ((GstGLBaseMemory *) gl_mem, info, size);
}
}
return data;
}
/**
* gst_gl_memory_pbo_download_transfer:
* @gl_mem: a #GstGLMemoryPBO
*
* Transfer the texture data from the PBO into the texture if necessary.
*
* Since: 1.8
*/
void
gst_gl_memory_pbo_upload_transfer (GstGLMemoryPBO * gl_mem)
{
g_return_if_fail (gst_is_gl_memory ((GstMemory *) gl_mem));
if (gl_mem->pbo && CONTEXT_SUPPORTS_PBO_UPLOAD (gl_mem->mem.mem.context))
gst_gl_context_thread_add (gl_mem->mem.mem.context,
(GstGLContextThreadFunc) _upload_transfer, gl_mem);
}
static void
_upload_pbo_memory (GstGLMemoryPBO * gl_mem, GstMapInfo * info,
GstGLBuffer * pbo, GstMapInfo * pbo_info)
{
GstGLContext *context = gl_mem->mem.mem.context;
const GstGLFuncs *gl;
guint gl_format, gl_type, gl_target;
guint pbo_id;
gsize plane_start;
if (!GST_MEMORY_FLAG_IS_SET (gl_mem, GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD))
return;
g_return_if_fail (CONTEXT_SUPPORTS_PBO_UPLOAD (context));
gl = context->gl_vtable;
pbo_id = *(guint *) pbo_info->data;
gl_type = GL_UNSIGNED_BYTE;
if (gl_mem->mem.tex_type == GST_VIDEO_GL_TEXTURE_TYPE_RGB16)
gl_type = GL_UNSIGNED_SHORT_5_6_5;
gl_format = gst_gl_format_from_gl_texture_type (gl_mem->mem.tex_type);
gl_target = gst_gl_texture_target_to_gl (gl_mem->mem.tex_target);
if (USING_OPENGL (context) || USING_GLES3 (context)
|| USING_OPENGL3 (context)) {
gl->PixelStorei (GL_UNPACK_ROW_LENGTH, gl_mem->mem.unpack_length);
} else if (USING_GLES2 (context)) {
gl->PixelStorei (GL_UNPACK_ALIGNMENT, gl_mem->mem.unpack_length);
}
GST_CAT_LOG (GST_CAT_GL_MEMORY, "upload for texture id:%u, with pbo %u %ux%u",
gl_mem->mem.tex_id, pbo_id, gl_mem->mem.tex_width,
GL_MEM_HEIGHT (gl_mem));
/* find the start of the plane data including padding */
plane_start =
gst_gl_get_plane_start (&gl_mem->mem.info, &gl_mem->mem.valign,
gl_mem->mem.plane) + GST_MEMORY_CAST (gl_mem)->offset;
gl->BindBuffer (GL_PIXEL_UNPACK_BUFFER, pbo_id);
gl->BindTexture (gl_target, gl_mem->mem.tex_id);
gl->TexSubImage2D (gl_target, 0, 0, 0, gl_mem->mem.tex_width,
GL_MEM_HEIGHT (gl_mem), gl_format, gl_type, (void *) plane_start);
gl->BindBuffer (GL_PIXEL_UNPACK_BUFFER, 0);
gl->BindTexture (gl_target, 0);
/* Reset to default values */
if (USING_OPENGL (context) || USING_GLES3 (context)) {
gl->PixelStorei (GL_UNPACK_ROW_LENGTH, 0);
} else if (USING_GLES2 (context)) {
gl->PixelStorei (GL_UNPACK_ALIGNMENT, 4);
}
}
static gboolean
_gl_mem_create (GstGLMemoryPBO * gl_mem, GError ** error)
{
GstGLContext *context = gl_mem->mem.mem.context;
GstGLBaseMemoryAllocatorClass *alloc_class;
alloc_class = GST_GL_BASE_MEMORY_ALLOCATOR_CLASS (parent_class);
if (!alloc_class->create ((GstGLBaseMemory *) gl_mem, error))
return FALSE;
if (CONTEXT_SUPPORTS_PBO_DOWNLOAD (context)
|| CONTEXT_SUPPORTS_PBO_UPLOAD (context)) {
GstAllocationParams alloc_params =
{ 0, GST_MEMORY_CAST (gl_mem)->align, 0, 0 };
GstGLBaseMemoryAllocator *buf_allocator;
GstGLBufferAllocationParams *params;
buf_allocator =
GST_GL_BASE_MEMORY_ALLOCATOR (gst_allocator_find
(GST_GL_BUFFER_ALLOCATOR_NAME));
params =
gst_gl_buffer_allocation_params_new (context,
GST_MEMORY_CAST (gl_mem)->size, &alloc_params, GL_PIXEL_UNPACK_BUFFER,
GL_STREAM_DRAW);
/* FIXME: lazy init this for resource constrained platforms
* Will need to fix pbo detection based on the existence of the mem.id then */
gl_mem->pbo = (GstGLBuffer *) gst_gl_base_memory_alloc (buf_allocator,
(GstGLAllocationParams *) params);
gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
gst_object_unref (buf_allocator);
GST_CAT_LOG (GST_CAT_GL_MEMORY, "generated pbo %u", gl_mem->pbo->id);
}
return TRUE;
}
static void
_upload_pbo_memory (GstGLMemoryPBO * gl_mem, GstMapInfo * info,
GstGLBuffer * pbo, GstMapInfo * pbo_info)
{
GstGLContext *context = gl_mem->mem.mem.context;
const GstGLFuncs *gl;
guint pbo_id;
if (!GST_MEMORY_FLAG_IS_SET (gl_mem, GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD))
return;
g_return_if_fail (CONTEXT_SUPPORTS_PBO_UPLOAD (context));
gl = context->gl_vtable;
pbo_id = *(guint *) pbo_info->data;
GST_CAT_LOG (GST_CAT_GL_MEMORY, "upload for texture id:%u, with pbo %u %ux%u",
gl_mem->mem.tex_id, pbo_id, gl_mem->mem.tex_width,
GL_MEM_HEIGHT (gl_mem));
gl->BindBuffer (GL_PIXEL_UNPACK_BUFFER, pbo_id);
gst_gl_memory_texsubimage (GST_GL_MEMORY_CAST (gl_mem), NULL);
gl->BindBuffer (GL_PIXEL_UNPACK_BUFFER, 0);
}