gstreamer/sys/androidmedia/magicleap/gstamc-surfacetexture-ml.c

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2018-11-19 18:40:35 +00:00
/*
* Copyright (C) 2018 Collabora Ltd.
* Author: Xavier Claessens <xavier.claessens@collabora.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstamc-surfacetexture-ml.h"
#include <gst/gst.h>
#include <ml_media_surface_texture.h>
struct _GstAmcSurfaceTextureML
{
GObject parent;
MLHandle handle;
GstAmcSurfaceTextureOnFrameAvailableCallback callback;
gpointer user_data;
};
G_DEFINE_TYPE (GstAmcSurfaceTextureML, gst_amc_surface_texture_ml,
GST_TYPE_AMC_SURFACE_TEXTURE);
gboolean
gst_amc_surface_texture_static_init (void)
{
return TRUE;
}
static gboolean
gst_amc_surface_texture_ml_update_tex_image (GstAmcSurfaceTexture * base,
GError ** err)
{
GstAmcSurfaceTextureML *self = GST_AMC_SURFACE_TEXTURE_ML (base);
MLResult result;
result = MLMediaSurfaceTextureUpdateTexImage (self->handle);
if (result != MLResult_Ok) {
g_set_error (err, GST_LIBRARY_ERROR, GST_LIBRARY_ERROR_FAILED,
"Failed to update tex image: %d", result);
return FALSE;
}
return TRUE;
}
static gboolean
gst_amc_surface_texture_ml_detach_from_gl_context (GstAmcSurfaceTexture * base,
GError ** err)
{
GstAmcSurfaceTextureML *self = GST_AMC_SURFACE_TEXTURE_ML (base);
MLResult result;
result = MLMediaSurfaceTextureDetachFromGLContext (self->handle);
if (result != MLResult_Ok) {
g_set_error (err, GST_LIBRARY_ERROR, GST_LIBRARY_ERROR_FAILED,
"Failed to detach from gl context: %d", result);
return FALSE;
}
return TRUE;
}
static gboolean
gst_amc_surface_texture_ml_attach_to_gl_context (GstAmcSurfaceTexture * base,
gint texture_id, GError ** err)
{
GstAmcSurfaceTextureML *self = GST_AMC_SURFACE_TEXTURE_ML (base);
MLResult result;
result = MLMediaSurfaceTextureAttachToGLContext (self->handle, texture_id);
if (result != MLResult_Ok) {
g_set_error (err, GST_LIBRARY_ERROR, GST_LIBRARY_ERROR_FAILED,
"Failed to attach to gl context: %d", result);
return FALSE;
}
return TRUE;
}
static gboolean
gst_amc_surface_texture_ml_get_transform_matrix (GstAmcSurfaceTexture * base,
gfloat * matrix, GError ** err)
{
GstAmcSurfaceTextureML *self = GST_AMC_SURFACE_TEXTURE_ML (base);
MLResult result;
result = MLMediaSurfaceTextureGetTransformationMatrix (self->handle, matrix);
if (result != MLResult_Ok) {
g_set_error (err, GST_LIBRARY_ERROR, GST_LIBRARY_ERROR_FAILED,
"Failed to get transformation matrix: %d", result);
return FALSE;
}
return TRUE;
}
static gboolean
gst_amc_surface_texture_ml_get_timestamp (GstAmcSurfaceTexture * base,
gint64 * timestamp, GError ** err)
{
GstAmcSurfaceTextureML *self = GST_AMC_SURFACE_TEXTURE_ML (base);
MLResult result;
result = MLMediaSurfaceTextureGetTimestamp (self->handle, timestamp);
if (result != MLResult_Ok) {
g_set_error (err, GST_LIBRARY_ERROR, GST_LIBRARY_ERROR_FAILED,
"Failed to get timestamp: %d", result);
return FALSE;
}
return TRUE;
}
static gboolean
gst_amc_surface_texture_ml_release (GstAmcSurfaceTexture * base, GError ** err)
{
/* Nothing to do here, resources will be released when this object gets
* destroyed. */
return TRUE;
}
static gboolean
gst_amc_surface_texture_ml_set_on_frame_available_callback
(GstAmcSurfaceTexture * base,
GstAmcSurfaceTextureOnFrameAvailableCallback callback, gpointer user_data,
GError ** err)
{
GstAmcSurfaceTextureML *self = GST_AMC_SURFACE_TEXTURE_ML (base);
self->callback = callback;
self->user_data = user_data;
return TRUE;
}
static void
gst_amc_surface_texture_ml_dispose (GObject * object)
{
GstAmcSurfaceTextureML *self = GST_AMC_SURFACE_TEXTURE_ML (object);
MLMediaSurfaceTextureSetOnFrameAvailableCallback (self->handle, NULL, NULL);
MLMediaSurfaceTextureDestroy (&self->handle);
G_OBJECT_CLASS (gst_amc_surface_texture_ml_parent_class)->dispose (object);
}
static void
gst_amc_surface_texture_ml_class_init (GstAmcSurfaceTextureMLClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstAmcSurfaceTextureClass *surface_texture_class =
GST_AMC_SURFACE_TEXTURE_CLASS (klass);
gobject_class->dispose = gst_amc_surface_texture_ml_dispose;
surface_texture_class->update_tex_image =
gst_amc_surface_texture_ml_update_tex_image;
surface_texture_class->detach_from_gl_context =
gst_amc_surface_texture_ml_detach_from_gl_context;
surface_texture_class->attach_to_gl_context =
gst_amc_surface_texture_ml_attach_to_gl_context;
surface_texture_class->get_transform_matrix =
gst_amc_surface_texture_ml_get_transform_matrix;
surface_texture_class->get_timestamp =
gst_amc_surface_texture_ml_get_timestamp;
surface_texture_class->release = gst_amc_surface_texture_ml_release;
surface_texture_class->set_on_frame_available_callback =
gst_amc_surface_texture_ml_set_on_frame_available_callback;
}
static void
on_frame_available_cb (MLHandle handle, gpointer user_data)
{
GstAmcSurfaceTextureML *self = user_data;
if (self->callback != NULL)
self->callback (GST_AMC_SURFACE_TEXTURE (self), self->user_data);
}
static void
gst_amc_surface_texture_ml_init (GstAmcSurfaceTextureML * self)
{
MLResult result;
result =
MLMediaSurfaceTextureCreate (MLMediaSurfaceTextureBackend_OpenGL,
&self->handle);
if (result != MLResult_Ok) {
GST_ERROR ("MLMediaSurfaceTextureCreate returned error: %d", result);
return;
}
result =
MLMediaSurfaceTextureSetOnFrameAvailableCallback (self->handle,
on_frame_available_cb, self);
if (result != MLResult_Ok) {
GST_ERROR
("MLMediaSurfaceTextureSetOnFrameAvailableCallback returned error: %d",
result);
return;
}
}
GstAmcSurfaceTextureML *
gst_amc_surface_texture_ml_new (GError ** err)
{
return g_object_new (GST_TYPE_AMC_SURFACE_TEXTURE_ML, NULL);
}
MLHandle
gst_amc_surface_texture_ml_get_handle (GstAmcSurfaceTextureML * self)
{
return self->handle;
}