sys/vdpau/gstvdpoutputbuffer.c - imx-gst-plugins-bad - Git at Google

 /*
  * GStreamer
  * Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * 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
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public
  * License along with this library; if not, write to the
  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */

 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif

 #include "gstvdpoutputbuffer.h"

 GST_DEBUG_CATEGORY_STATIC (gst_vdp_output_buffer_debug);
 #define GST_CAT_DEFAULT gst_vdp_output_buffer_debug

 #define DEBUG_INIT(bla) \
 GST_DEBUG_CATEGORY_INIT (gst_vdp_output_buffer_debug, "vdpoutputbuffer", 0, "VDPAU output buffer");

 GstVdpOutputBuffer *
 gst_vdp_output_buffer_new (GstVdpDevice * device, VdpRGBAFormat rgba_format,
     gint width, gint height, GError ** error)
 {
   GstVdpOutputBuffer *buffer;
   VdpStatus status;
   VdpOutputSurface surface;

   status =
       device->vdp_output_surface_create (device->device, rgba_format, width,
       height, &surface);
   if (status != VDP_STATUS_OK)
     goto create_error;

   buffer =
       (GstVdpOutputBuffer *) gst_mini_object_new (GST_TYPE_VDP_OUTPUT_BUFFER);

   buffer->device = g_object_ref (device);
   buffer->rgba_format = rgba_format;
   buffer->width = width;
   buffer->height = height;

   buffer->surface = surface;

   return buffer;

 create_error:
   g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_READ,
       "Couldn't create a VdpOutputSurface, error returned from vdpau was: %s",
       device->vdp_get_error_string (status));
   return NULL;
 }

 static GObjectClass *gst_vdp_output_buffer_parent_class;

 static void
 gst_vdp_output_buffer_finalize (GstVdpOutputBuffer * buffer)
 {
   GstVdpDevice *device;
   VdpStatus status;

   if (gst_vdp_buffer_revive (GST_VDP_BUFFER_CAST (buffer)))
     return;

   device = buffer->device;

   status = device->vdp_output_surface_destroy (buffer->surface);
   if (status != VDP_STATUS_OK)
     GST_ERROR
         ("Couldn't destroy the buffers VdpOutputSurface, error returned was: %s",
         device->vdp_get_error_string (status));

   g_object_unref (buffer->device);

   GST_MINI_OBJECT_CLASS (gst_vdp_output_buffer_parent_class)->finalize
       (GST_MINI_OBJECT (buffer));
 }

 static void
 gst_vdp_output_buffer_init (GstVdpOutputBuffer * buffer, gpointer g_class)
 {
   buffer->device = NULL;
   buffer->surface = VDP_INVALID_HANDLE;
 }

 static void
 gst_vdp_output_buffer_class_init (gpointer g_class, gpointer class_data)
 {
   GstMiniObjectClass *mini_object_class = GST_MINI_OBJECT_CLASS (g_class);

   gst_vdp_output_buffer_parent_class = g_type_class_peek_parent (g_class);

   mini_object_class->finalize = (GstMiniObjectFinalizeFunction)
       gst_vdp_output_buffer_finalize;
 }


 GType
 gst_vdp_output_buffer_get_type (void)
 {
   static GType _gst_vdp_output_buffer_type;

   if (G_UNLIKELY (_gst_vdp_output_buffer_type == 0)) {
     static const GTypeInfo info = {
       sizeof (GstBufferClass),
       NULL,
       NULL,
       gst_vdp_output_buffer_class_init,
       NULL,
       NULL,
       sizeof (GstVdpOutputBuffer),
       0,
       (GInstanceInitFunc) gst_vdp_output_buffer_init,
       NULL
     };
     _gst_vdp_output_buffer_type = g_type_register_static (GST_TYPE_VDP_BUFFER,
         "GstVdpOutputBuffer", &info, 0);

     DEBUG_INIT ();
   }
   return _gst_vdp_output_buffer_type;
 }

 typedef struct
 {
   VdpRGBAFormat format;
   GstStaticCaps caps;
 } GstVdpOutputBufferFormats;

 GstVdpOutputBufferFormats rgba_formats[] = {
   {VDP_RGBA_FORMAT_A8,
       GST_STATIC_CAPS ("video/x-raw-rgb, "
             "bpp = (int)8, "
             "depth = (int)8, "
             "endianness = (int)4321, "
             "red_mask = (int)0x00, "
             "green_mask = (int)0x00, "
             "blue_mask = (int)0x00, " "alpha_mask = (int)0xff")},
   {VDP_RGBA_FORMAT_B10G10R10A2,
       GST_STATIC_CAPS ("video/x-raw-rgb, "
             "bpp = (int)32, "
             "depth = (int)30, "
             "endianness = (int)4321, "
             "red_mask = (int)0x000003fc, "
             "green_mask = (int)0x003ff000, "
             "blue_mask = (int)0xffc00000, " "alpha_mask = (int)0x00000003")},
   {VDP_RGBA_FORMAT_B8G8R8A8,
       GST_STATIC_CAPS ("video/x-raw-rgb, "
             "bpp = (int)32, "
             "depth = (int)24, "
             "endianness = (int)4321, "
             "red_mask = (int)0x0000ff00, "
             "green_mask = (int)0x00ff0000, "
             "blue_mask = (int)0xff000000, " "alpha_mask = (int)0x000000ff")},
   {VDP_RGBA_FORMAT_R10G10B10A2,
       GST_STATIC_CAPS ("video/x-raw-rgb, "
             "bpp = (int)32, "
             "depth = (int)30, "
             "endianness = (int)4321, "
             "red_mask = (int)0xffc00000, "
             "green_mask = (int)0x003ff000, "
             "blue_mask = (int)0x000003fc, " "alpha_mask = (int)0x00000003")},
   {VDP_RGBA_FORMAT_R8G8B8A8,
       GST_STATIC_CAPS ("video/x-raw-rgb, "
             "bpp = (int)32, "
             "depth = (int)24, "
             "endianness = (int)4321, "
             "red_mask = (int)0xff000000, "
             "green_mask = (int)0x00ff0000, "
             "blue_mask = (int)0x0000ff00, " "alpha_mask = (int)0x000000ff")},
 };


 GstCaps *
 gst_vdp_output_buffer_get_template_caps (void)
 {
   GstCaps *caps, *rgb_caps;
   gint i;

   caps = gst_caps_new_empty ();
   rgb_caps = gst_caps_new_empty ();

   for (i = 0; i < G_N_ELEMENTS (rgba_formats); i++) {
     GstCaps *format_caps;

     format_caps = gst_caps_new_simple ("video/x-vdpau-output",
         "rgba-format", G_TYPE_INT, rgba_formats[i].format,
         "width", GST_TYPE_INT_RANGE, 1, 8192,
         "height", GST_TYPE_INT_RANGE, 1, 8192, NULL);
     gst_caps_append (caps, format_caps);

     format_caps = gst_static_caps_get (&rgba_formats[i].caps);
     format_caps = gst_caps_copy (format_caps);
     gst_caps_set_simple (format_caps,
         "width", GST_TYPE_INT_RANGE, 1, 8192,
         "height", GST_TYPE_INT_RANGE, 1, 8192, NULL);
     gst_caps_append (rgb_caps, format_caps);

   }

   gst_caps_append (caps, rgb_caps);

   return caps;
 }

 GstCaps *
 gst_vdp_output_buffer_get_allowed_caps (GstVdpDevice * device)
 {
   GstCaps *caps, *rgb_caps;
   gint i;

   g_return_val_if_fail (GST_IS_VDP_DEVICE (device), NULL);

   caps = gst_caps_new_empty ();
   rgb_caps = gst_caps_new_empty ();

   for (i = 0; i < G_N_ELEMENTS (rgba_formats); i++) {
     VdpStatus status;
     VdpBool is_supported;
     guint max_w, max_h;

     status = device->vdp_output_surface_query_capabilities (device->device,
         rgba_formats[i].format, &is_supported, &max_w, &max_h);
     if (status != VDP_STATUS_OK && status != VDP_STATUS_INVALID_RGBA_FORMAT) {
       GST_ERROR_OBJECT (device,
           "Could not get query VDPAU output surface capabilites, "
           "Error returned from vdpau was: %s",
           device->vdp_get_error_string (status));

       goto error;
     }

     if (is_supported) {
       GstCaps *format_caps;

       format_caps = gst_caps_new_simple ("video/x-vdpau-output",
           "rgba-format", G_TYPE_INT, rgba_formats[i].format,
           "width", GST_TYPE_INT_RANGE, 1, max_w,
           "height", GST_TYPE_INT_RANGE, 1, max_h, NULL);
       gst_caps_append (caps, format_caps);

       format_caps = gst_static_caps_get (&rgba_formats[i].caps);
       format_caps = gst_caps_copy (format_caps);
       gst_caps_set_simple (format_caps,
           "width", GST_TYPE_INT_RANGE, 1, 8192,
           "height", GST_TYPE_INT_RANGE, 1, 8192, NULL);
       gst_caps_append (rgb_caps, format_caps);
     }
   }

   gst_caps_append (caps, rgb_caps);

 error:

   return caps;
 }

 gboolean
 gst_vdp_caps_to_rgba_format (GstCaps * caps, VdpRGBAFormat * rgba_format)
 {
   GstStructure *structure;
   gint c_bpp, c_depth, c_endianness, c_red_mask, c_green_mask, c_blue_mask,
       c_alpha_mask;

   gint i;

   g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);

   if (!gst_caps_is_fixed (caps))
     return FALSE;

   structure = gst_caps_get_structure (caps, 0);
   if (!gst_structure_has_name (structure, "video/x-raw-rgb"))
     return FALSE;

   if (!gst_structure_get_int (structure, "bpp", &c_bpp) ||
       !gst_structure_get_int (structure, "depth", &c_depth) ||
       !gst_structure_get_int (structure, "endianness", &c_endianness) ||
       !gst_structure_get_int (structure, "red_mask", &c_red_mask) ||
       !gst_structure_get_int (structure, "green_mask", &c_green_mask) ||
       !gst_structure_get_int (structure, "blue_mask", &c_blue_mask) ||
       !gst_structure_get_int (structure, "alpha_mask", &c_alpha_mask))
     return FALSE;

   for (i = 0; i < G_N_ELEMENTS (rgba_formats); i++) {
     gint bpp, depth, endianness, red_mask, green_mask, blue_mask, alpha_mask;

     GstCaps *rgb_caps = gst_static_caps_get (&rgba_formats[i].caps);
     structure = gst_caps_get_structure (rgb_caps, 0);

     gst_structure_get_int (structure, "bpp", &bpp);
     gst_structure_get_int (structure, "depth", &depth);
     gst_structure_get_int (structure, "endianness", &endianness);
     gst_structure_get_int (structure, "red_mask", &red_mask);
     gst_structure_get_int (structure, "green_mask", &green_mask);
     gst_structure_get_int (structure, "blue_mask", &blue_mask);
     gst_structure_get_int (structure, "alpha_mask", &alpha_mask);

     if (c_bpp == bpp && c_depth == depth && c_endianness == endianness &&
         c_red_mask == red_mask && c_green_mask == green_mask &&
         c_blue_mask == blue_mask && c_alpha_mask == alpha_mask) {
       gst_caps_unref (rgb_caps);
       *rgba_format = rgba_formats[i].format;
       return TRUE;
     }

     gst_caps_unref (rgb_caps);
   }

   return FALSE;
 }

 gboolean
 gst_vdp_output_buffer_calculate_size (GstVdpOutputBuffer * output_buf,
     guint * size)
 {
   g_return_val_if_fail (GST_IS_VDP_OUTPUT_BUFFER (output_buf), FALSE);

   switch (output_buf->rgba_format) {
     case VDP_RGBA_FORMAT_A8:
     {
       *size = output_buf->width * output_buf->height;
       break;
     }

     case VDP_RGBA_FORMAT_B10G10R10A2:
     case VDP_RGBA_FORMAT_B8G8R8A8:
     case VDP_RGBA_FORMAT_R10G10B10A2:
     case VDP_RGBA_FORMAT_R8G8B8A8:
     {
       *size = output_buf->width * output_buf->height * 4;
       break;
     }

     default:
       g_assert_not_reached ();
       return FALSE;
   }

   return TRUE;
 }

 gboolean
 gst_vdp_output_buffer_download (GstVdpOutputBuffer * output_buf,
     GstBuffer * outbuf, GError ** error)
 {
   guint8 *data[1];
   guint32 stride[1];
   GstVdpDevice *device;
   VdpOutputSurface surface;
   VdpStatus status;

   g_return_val_if_fail (GST_IS_VDP_OUTPUT_BUFFER (output_buf), FALSE);

   switch (output_buf->rgba_format) {
     case VDP_RGBA_FORMAT_A8:
     {
       stride[0] = output_buf->width;
       break;
     }

     case VDP_RGBA_FORMAT_B10G10R10A2:
     case VDP_RGBA_FORMAT_B8G8R8A8:
     case VDP_RGBA_FORMAT_R10G10B10A2:
     case VDP_RGBA_FORMAT_R8G8B8A8:
     {
       stride[0] = output_buf->width * 4;
       break;
     }

     default:
       return FALSE;
   }

   device = output_buf->device;
   surface = output_buf->surface;
   data[0] = GST_BUFFER_DATA (outbuf);

   GST_LOG_OBJECT (output_buf, "Entering vdp_output_surface_get_bits_native");
   status =
       device->vdp_output_surface_get_bits_native (surface, NULL, (void *) data,
       stride);
   GST_LOG_OBJECT (output_buf,
       "Got status %d from vdp_output_get_bits_native", status);

   if (G_UNLIKELY (status != VDP_STATUS_OK)) {
     g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_READ,
         "Couldn't get data from vdpau, error returned from vdpau was: %s",
         device->vdp_get_error_string (status));
     return FALSE;
   }

   return TRUE;
 }
	/*
	* GStreamer
	* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Library General Public
	* License as published by the Free Software Foundation; either
	* version 2 of the License, or (at your option) any later version.
	*
	* 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
	* Library General Public License for more details.
	*
	* You should have received a copy of the GNU Library General Public
	* License along with this library; if not, write to the
	* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
	* Boston, MA 02110-1301, USA.
	*/

	#ifdef HAVE_CONFIG_H
	#include "config.h"
	#endif

	#include "gstvdpoutputbuffer.h"

	GST_DEBUG_CATEGORY_STATIC (gst_vdp_output_buffer_debug);
	#define GST_CAT_DEFAULT gst_vdp_output_buffer_debug

	#define DEBUG_INIT(bla) \
	GST_DEBUG_CATEGORY_INIT (gst_vdp_output_buffer_debug, "vdpoutputbuffer", 0, "VDPAU output buffer");

	GstVdpOutputBuffer *
	gst_vdp_output_buffer_new (GstVdpDevice * device, VdpRGBAFormat rgba_format,
	gint width, gint height, GError ** error)
	{
	GstVdpOutputBuffer *buffer;
	VdpStatus status;
	VdpOutputSurface surface;

	status =
	device->vdp_output_surface_create (device->device, rgba_format, width,
	height, &surface);
	if (status != VDP_STATUS_OK)
	goto create_error;

	buffer =
	(GstVdpOutputBuffer *) gst_mini_object_new (GST_TYPE_VDP_OUTPUT_BUFFER);

	buffer->device = g_object_ref (device);
	buffer->rgba_format = rgba_format;
	buffer->width = width;
	buffer->height = height;

	buffer->surface = surface;

	return buffer;

	create_error:
	g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_READ,
	"Couldn't create a VdpOutputSurface, error returned from vdpau was: %s",
	device->vdp_get_error_string (status));
	return NULL;
	}

	static GObjectClass *gst_vdp_output_buffer_parent_class;

	static void
	gst_vdp_output_buffer_finalize (GstVdpOutputBuffer * buffer)
	{
	GstVdpDevice *device;
	VdpStatus status;

	if (gst_vdp_buffer_revive (GST_VDP_BUFFER_CAST (buffer)))
	return;

	device = buffer->device;

	status = device->vdp_output_surface_destroy (buffer->surface);
	if (status != VDP_STATUS_OK)
	GST_ERROR
	("Couldn't destroy the buffers VdpOutputSurface, error returned was: %s",
	device->vdp_get_error_string (status));

	g_object_unref (buffer->device);

	GST_MINI_OBJECT_CLASS (gst_vdp_output_buffer_parent_class)->finalize
	(GST_MINI_OBJECT (buffer));
	}

	static void
	gst_vdp_output_buffer_init (GstVdpOutputBuffer * buffer, gpointer g_class)
	{
	buffer->device = NULL;
	buffer->surface = VDP_INVALID_HANDLE;
	}

	static void
	gst_vdp_output_buffer_class_init (gpointer g_class, gpointer class_data)
	{
	GstMiniObjectClass *mini_object_class = GST_MINI_OBJECT_CLASS (g_class);

	gst_vdp_output_buffer_parent_class = g_type_class_peek_parent (g_class);

	mini_object_class->finalize = (GstMiniObjectFinalizeFunction)
	gst_vdp_output_buffer_finalize;
	}


	GType
	gst_vdp_output_buffer_get_type (void)
	{
	static GType _gst_vdp_output_buffer_type;

	if (G_UNLIKELY (_gst_vdp_output_buffer_type == 0)) {
	static const GTypeInfo info = {
	sizeof (GstBufferClass),
	NULL,
	NULL,
	gst_vdp_output_buffer_class_init,
	NULL,
	NULL,
	sizeof (GstVdpOutputBuffer),
	0,
	(GInstanceInitFunc) gst_vdp_output_buffer_init,
	NULL
	};
	_gst_vdp_output_buffer_type = g_type_register_static (GST_TYPE_VDP_BUFFER,
	"GstVdpOutputBuffer", &info, 0);

	DEBUG_INIT ();
	}
	return _gst_vdp_output_buffer_type;
	}

	typedef struct
	{
	VdpRGBAFormat format;
	GstStaticCaps caps;
	} GstVdpOutputBufferFormats;

	GstVdpOutputBufferFormats rgba_formats[] = {
	{VDP_RGBA_FORMAT_A8,
	GST_STATIC_CAPS ("video/x-raw-rgb, "
	"bpp = (int)8, "
	"depth = (int)8, "
	"endianness = (int)4321, "
	"red_mask = (int)0x00, "
	"green_mask = (int)0x00, "
	"blue_mask = (int)0x00, " "alpha_mask = (int)0xff")},
	{VDP_RGBA_FORMAT_B10G10R10A2,
	GST_STATIC_CAPS ("video/x-raw-rgb, "
	"bpp = (int)32, "
	"depth = (int)30, "
	"endianness = (int)4321, "
	"red_mask = (int)0x000003fc, "
	"green_mask = (int)0x003ff000, "
	"blue_mask = (int)0xffc00000, " "alpha_mask = (int)0x00000003")},
	{VDP_RGBA_FORMAT_B8G8R8A8,
	GST_STATIC_CAPS ("video/x-raw-rgb, "
	"bpp = (int)32, "
	"depth = (int)24, "
	"endianness = (int)4321, "
	"red_mask = (int)0x0000ff00, "
	"green_mask = (int)0x00ff0000, "
	"blue_mask = (int)0xff000000, " "alpha_mask = (int)0x000000ff")},
	{VDP_RGBA_FORMAT_R10G10B10A2,
	GST_STATIC_CAPS ("video/x-raw-rgb, "
	"bpp = (int)32, "
	"depth = (int)30, "
	"endianness = (int)4321, "
	"red_mask = (int)0xffc00000, "
	"green_mask = (int)0x003ff000, "
	"blue_mask = (int)0x000003fc, " "alpha_mask = (int)0x00000003")},
	{VDP_RGBA_FORMAT_R8G8B8A8,
	GST_STATIC_CAPS ("video/x-raw-rgb, "
	"bpp = (int)32, "
	"depth = (int)24, "
	"endianness = (int)4321, "
	"red_mask = (int)0xff000000, "
	"green_mask = (int)0x00ff0000, "
	"blue_mask = (int)0x0000ff00, " "alpha_mask = (int)0x000000ff")},
	};


	GstCaps *
	gst_vdp_output_buffer_get_template_caps (void)
	{
	GstCaps caps, rgb_caps;
	gint i;

	caps = gst_caps_new_empty ();
	rgb_caps = gst_caps_new_empty ();

	for (i = 0; i < G_N_ELEMENTS (rgba_formats); i++) {
	GstCaps *format_caps;

	format_caps = gst_caps_new_simple ("video/x-vdpau-output",
	"rgba-format", G_TYPE_INT, rgba_formats[i].format,
	"width", GST_TYPE_INT_RANGE, 1, 8192,
	"height", GST_TYPE_INT_RANGE, 1, 8192, NULL);
	gst_caps_append (caps, format_caps);

	format_caps = gst_static_caps_get (&rgba_formats[i].caps);
	format_caps = gst_caps_copy (format_caps);
	gst_caps_set_simple (format_caps,
	"width", GST_TYPE_INT_RANGE, 1, 8192,
	"height", GST_TYPE_INT_RANGE, 1, 8192, NULL);
	gst_caps_append (rgb_caps, format_caps);

	}

	gst_caps_append (caps, rgb_caps);

	return caps;
	}

	GstCaps *
	gst_vdp_output_buffer_get_allowed_caps (GstVdpDevice * device)
	{
	GstCaps caps, rgb_caps;
	gint i;

	g_return_val_if_fail (GST_IS_VDP_DEVICE (device), NULL);

	caps = gst_caps_new_empty ();
	rgb_caps = gst_caps_new_empty ();

	for (i = 0; i < G_N_ELEMENTS (rgba_formats); i++) {
	VdpStatus status;
	VdpBool is_supported;
	guint max_w, max_h;

	status = device->vdp_output_surface_query_capabilities (device->device,
	rgba_formats[i].format, &is_supported, &max_w, &max_h);
	if (status != VDP_STATUS_OK && status != VDP_STATUS_INVALID_RGBA_FORMAT) {
	GST_ERROR_OBJECT (device,
	"Could not get query VDPAU output surface capabilites, "
	"Error returned from vdpau was: %s",
	device->vdp_get_error_string (status));

	goto error;
	}

	if (is_supported) {
	GstCaps *format_caps;

	format_caps = gst_caps_new_simple ("video/x-vdpau-output",
	"rgba-format", G_TYPE_INT, rgba_formats[i].format,
	"width", GST_TYPE_INT_RANGE, 1, max_w,
	"height", GST_TYPE_INT_RANGE, 1, max_h, NULL);
	gst_caps_append (caps, format_caps);

	format_caps = gst_static_caps_get (&rgba_formats[i].caps);
	format_caps = gst_caps_copy (format_caps);
	gst_caps_set_simple (format_caps,
	"width", GST_TYPE_INT_RANGE, 1, 8192,
	"height", GST_TYPE_INT_RANGE, 1, 8192, NULL);
	gst_caps_append (rgb_caps, format_caps);
	}
	}

	gst_caps_append (caps, rgb_caps);

	error:

	return caps;
	}

	gboolean
	gst_vdp_caps_to_rgba_format (GstCaps * caps, VdpRGBAFormat * rgba_format)
	{
	GstStructure *structure;
	gint c_bpp, c_depth, c_endianness, c_red_mask, c_green_mask, c_blue_mask,
	c_alpha_mask;

	gint i;

	g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);

	if (!gst_caps_is_fixed (caps))
	return FALSE;

	structure = gst_caps_get_structure (caps, 0);
	if (!gst_structure_has_name (structure, "video/x-raw-rgb"))
	return FALSE;

	if (!gst_structure_get_int (structure, "bpp", &c_bpp) \|\|
	!gst_structure_get_int (structure, "depth", &c_depth) \|\|
	!gst_structure_get_int (structure, "endianness", &c_endianness) \|\|
	!gst_structure_get_int (structure, "red_mask", &c_red_mask) \|\|
	!gst_structure_get_int (structure, "green_mask", &c_green_mask) \|\|
	!gst_structure_get_int (structure, "blue_mask", &c_blue_mask) \|\|
	!gst_structure_get_int (structure, "alpha_mask", &c_alpha_mask))
	return FALSE;

	for (i = 0; i < G_N_ELEMENTS (rgba_formats); i++) {
	gint bpp, depth, endianness, red_mask, green_mask, blue_mask, alpha_mask;

	GstCaps *rgb_caps = gst_static_caps_get (&rgba_formats[i].caps);
	structure = gst_caps_get_structure (rgb_caps, 0);

	gst_structure_get_int (structure, "bpp", &bpp);
	gst_structure_get_int (structure, "depth", &depth);
	gst_structure_get_int (structure, "endianness", &endianness);
	gst_structure_get_int (structure, "red_mask", &red_mask);
	gst_structure_get_int (structure, "green_mask", &green_mask);
	gst_structure_get_int (structure, "blue_mask", &blue_mask);
	gst_structure_get_int (structure, "alpha_mask", &alpha_mask);

	if (c_bpp == bpp && c_depth == depth && c_endianness == endianness &&
	c_red_mask == red_mask && c_green_mask == green_mask &&
	c_blue_mask == blue_mask && c_alpha_mask == alpha_mask) {
	gst_caps_unref (rgb_caps);
	*rgba_format = rgba_formats[i].format;
	return TRUE;
	}

	gst_caps_unref (rgb_caps);
	}

	return FALSE;
	}

	gboolean
	gst_vdp_output_buffer_calculate_size (GstVdpOutputBuffer * output_buf,
	guint * size)
	{
	g_return_val_if_fail (GST_IS_VDP_OUTPUT_BUFFER (output_buf), FALSE);

	switch (output_buf->rgba_format) {
	case VDP_RGBA_FORMAT_A8:
	{
	size = output_buf->width output_buf->height;
	break;
	}

	case VDP_RGBA_FORMAT_B10G10R10A2:
	case VDP_RGBA_FORMAT_B8G8R8A8:
	case VDP_RGBA_FORMAT_R10G10B10A2:
	case VDP_RGBA_FORMAT_R8G8B8A8:
	{
	size = output_buf->width output_buf->height * 4;
	break;
	}

	default:
	g_assert_not_reached ();
	return FALSE;
	}

	return TRUE;
	}

	gboolean
	gst_vdp_output_buffer_download (GstVdpOutputBuffer * output_buf,
	GstBuffer * outbuf, GError ** error)
	{
	guint8 *data[1];
	guint32 stride[1];
	GstVdpDevice *device;
	VdpOutputSurface surface;
	VdpStatus status;

	g_return_val_if_fail (GST_IS_VDP_OUTPUT_BUFFER (output_buf), FALSE);

	switch (output_buf->rgba_format) {
	case VDP_RGBA_FORMAT_A8:
	{
	stride[0] = output_buf->width;
	break;
	}

	case VDP_RGBA_FORMAT_B10G10R10A2:
	case VDP_RGBA_FORMAT_B8G8R8A8:
	case VDP_RGBA_FORMAT_R10G10B10A2:
	case VDP_RGBA_FORMAT_R8G8B8A8:
	{
	stride[0] = output_buf->width * 4;
	break;
	}

	default:
	return FALSE;
	}

	device = output_buf->device;
	surface = output_buf->surface;
	data[0] = GST_BUFFER_DATA (outbuf);

	GST_LOG_OBJECT (output_buf, "Entering vdp_output_surface_get_bits_native");
	status =
	device->vdp_output_surface_get_bits_native (surface, NULL, (void *) data,
	stride);
	GST_LOG_OBJECT (output_buf,
	"Got status %d from vdp_output_get_bits_native", status);

	if (G_UNLIKELY (status != VDP_STATUS_OK)) {
	g_set_error (error, GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_READ,
	"Couldn't get data from vdpau, error returned from vdpau was: %s",
	device->vdp_get_error_string (status));
	return FALSE;
	}

	return TRUE;
	}