--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_good/gst-libs/gst/interfaces/photography.c	Wed Sep 01 12:16:41 2010 +0100
@@ -0,0 +1,367 @@
+/* GStreamer
+ *
+ * Copyright (C) 2008 Nokia Corporation <multimedia@maemo.org>
+ *
+ * photography.c: photography interface for digital imaging
+ *
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "photography.h"
+
+/**
+ * SECTION:photography
+ * @short_description: Interface for elements having digital imaging controls
+ *
+ * The interface allows access to some common digital imaging controls
+ */
+
+static void gst_photography_iface_init (GstPhotographyInterface * iface);
+
+EXPORT_C GType
+gst_photography_get_type (void)
+{
+  static GType gst_photography_type = 0;
+
+  if (!gst_photography_type) {
+    static const GTypeInfo gst_photography_info = {
+      sizeof (GstPhotographyInterface),
+      (GBaseInitFunc) gst_photography_iface_init,
+      NULL,
+      NULL,
+      NULL,
+      NULL,
+      0,
+      0,
+      NULL,
+    };
+
+    gst_photography_type = g_type_register_static (G_TYPE_INTERFACE,
+        "GstPhotography", &gst_photography_info, 0);
+    g_type_interface_add_prerequisite (gst_photography_type,
+        GST_TYPE_IMPLEMENTS_INTERFACE);
+  }
+
+  return gst_photography_type;
+}
+
+static void
+gst_photography_iface_init (GstPhotographyInterface * iface)
+{
+  /* default virtual functions */
+  iface->get_ev_compensation = NULL;
+  iface->get_iso_speed = NULL;
+  iface->get_aperture = NULL;
+  iface->get_exposure = NULL;
+  iface->get_white_balance_mode = NULL;
+  iface->get_colour_tone_mode = NULL;
+  iface->get_scene_mode = NULL;
+  iface->get_flash_mode = NULL;
+  iface->get_zoom = NULL;
+
+  iface->set_ev_compensation = NULL;
+  iface->set_iso_speed = NULL;
+  iface->set_aperture = NULL;
+  iface->set_exposure = NULL;
+  iface->set_white_balance_mode = NULL;
+  iface->set_colour_tone_mode = NULL;
+  iface->set_scene_mode = NULL;
+  iface->set_flash_mode = NULL;
+  iface->set_zoom = NULL;
+
+  iface->get_capabilities = NULL;
+  iface->prepare_for_capture = NULL;
+  iface->set_autofocus = NULL;
+}
+
+#define GST_PHOTOGRAPHY_FUNC_TEMPLATE(function_name, param_type) \
+EXPORT_C gboolean \
+gst_photography_set_ ## function_name (GstPhotography * photo, param_type param) \
+{ \
+  GstPhotographyInterface *iface; \
+  g_return_val_if_fail (photo != NULL, FALSE); \
+  iface = GST_PHOTOGRAPHY_GET_IFACE (photo); \
+  if (iface->set_ ## function_name) { \
+    return iface->set_ ## function_name (photo, param); \
+  } \
+  return FALSE; \
+} \
+EXPORT_C gboolean \
+gst_photography_get_ ## function_name (GstPhotography * photo, param_type * param) \
+{ \
+  GstPhotographyInterface *iface; \
+  g_return_val_if_fail (photo != NULL, FALSE); \
+  iface = GST_PHOTOGRAPHY_GET_IFACE (photo); \
+  if (iface->get_ ## function_name) { \
+    return iface->get_ ## function_name (photo, param); \
+  } \
+  return FALSE; \
+}
+
+
+/**
+ * gst_photography_set_ev_compensation:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @ev_comp: ev compensation value to set
+ *
+ * Set the ev compensation value for the #GstElement
+ *
+ * Returns: %TRUE if setting the value succeeded, %FALSE otherwise
+ */
+/**
+ * gst_photography_get_ev_compensation:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @ev_comp: ev compensation value to get
+ *
+ * Get the ev compensation value for the #GstElement
+ *
+ * Returns: %TRUE if getting the value succeeded, %FALSE otherwise
+ */
+GST_PHOTOGRAPHY_FUNC_TEMPLATE (ev_compensation, gfloat);
+
+/**
+ * gst_photography_set_iso_speed:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @iso_speed: ISO speed value to set
+ *
+ * Set the ISO value (light sensivity) for the #GstElement
+ *
+ * Returns: %TRUE if setting the value succeeded, %FALSE otherwise
+ */
+/**
+ * gst_photography_get_iso_speed:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @iso_speed: ISO speed value to get
+ *
+ * Get the ISO value (light sensivity) for the #GstElement
+ *
+ * Returns: %TRUE if getting the value succeeded, %FALSE otherwise
+ */
+GST_PHOTOGRAPHY_FUNC_TEMPLATE (iso_speed, guint);
+
+/**
+ * gst_photography_set_aperture:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @aperture: aperture value to set
+ *
+ * Set the aperture value for the #GstElement
+ *
+ * Returns: %TRUE if setting the value succeeded, %FALSE otherwise
+ */
+/**
+ * gst_photography_get_aperture:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @aperture: aperture value to get
+ *
+ * Get the aperture value for the #GstElement
+ *
+ * Returns: %TRUE if getting the value succeeded, %FALSE otherwise
+ */
+GST_PHOTOGRAPHY_FUNC_TEMPLATE (aperture, guint);
+
+/**
+ * gst_photography_set_exposure:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @exposure: exposure time to set
+ *
+ * Set the fixed exposure time (in us) for the #GstElement
+ *
+ * Returns: %TRUE if setting the value succeeded, %FALSE otherwise
+ */
+/**
+ * gst_photography_get_exposure:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @exposure: exposure time to get
+ *
+ * Get the fixed exposure time (in us) for the #GstElement
+ *
+ * Returns: %TRUE if getting the value succeeded, %FALSE otherwise
+ */
+GST_PHOTOGRAPHY_FUNC_TEMPLATE (exposure, guint32);
+
+/**
+ * gst_photography_set_white_balance_mode:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @wb_mode: #GstWhiteBalanceMode to set
+ *
+ * Set the white balance mode for the #GstElement
+ *
+ * Returns: %TRUE if setting the value succeeded, %FALSE otherwise
+ */
+/**
+ * gst_photography_get_white_balance_mode:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @wb_mode: #GstWhiteBalanceMode to get
+ *
+ * Get the white balance mode for the #GstElement
+ *
+ * Returns: %TRUE if getting the value succeeded, %FALSE otherwise
+ */
+GST_PHOTOGRAPHY_FUNC_TEMPLATE (white_balance_mode, GstWhiteBalanceMode);
+
+/**
+ * gst_photography_set_colour_tone_mode:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @tone_mode: #GstColourToneMode to set
+ *
+ * Set the colour tone mode for the #GstElement
+ *
+ * Returns: %TRUE if setting the value succeeded, %FALSE otherwise
+ */
+/**
+ * gst_photography_get_colour_tone_mode:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @tone_mode: #GstColourToneMode to get
+ *
+ * Get the colour tone mode for the #GstElement
+ *
+ * Returns: %TRUE if getting the value succeeded, %FALSE otherwise
+ */
+GST_PHOTOGRAPHY_FUNC_TEMPLATE (colour_tone_mode, GstColourToneMode);
+
+/**
+ * gst_photography_set_scene_mode:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @scene_mode: #GstSceneMode to set
+ *
+ * Set the scene mode for the #GstElement
+ *
+ * Returns: %TRUE if setting the value succeeded, %FALSE otherwise
+ */
+/**
+ * gst_photography_get_scene_mode:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @scene_mode: #GstSceneMode to get
+ *
+ * Get the scene mode for the #GstElement
+ *
+ * Returns: %TRUE if getting the value succeeded, %FALSE otherwise
+ */
+GST_PHOTOGRAPHY_FUNC_TEMPLATE (scene_mode, GstSceneMode);
+
+/**
+ * gst_photography_set_flash_mode:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @flash_mode: #GstFlashMode to set
+ *
+ * Set the flash mode for the #GstElement
+ *
+ * Returns: %TRUE if setting the value succeeded, %FALSE otherwise
+ */
+/**
+ * gst_photography_get_flash_mode:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @flash_mode: #GstFlashMode to get
+ *
+ * Get the flash mode for the #GstElement
+ *
+ * Returns: %TRUE if getting the value succeeded, %FALSE otherwise
+ */
+GST_PHOTOGRAPHY_FUNC_TEMPLATE (flash_mode, GstFlashMode);
+
+/**
+ * gst_photography_set_zoom:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @zoom: zoom value to set
+ *
+ * Set the zoom value for the #GstElement.
+ * E.g. 1.0 to get original image and 3.0 for 3x zoom and so on.
+ *
+ * Returns: %TRUE if setting the value succeeded, %FALSE otherwise
+ */
+/**
+ * gst_photography_get_zoom:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @zoom: zoom value to get
+ *
+ * Get the zoom value for the #GstElement
+ *
+ * Returns: %TRUE if getting the value succeeded, %FALSE otherwise
+ */
+GST_PHOTOGRAPHY_FUNC_TEMPLATE (zoom, gfloat);
+
+/**
+ * gst_photography_get_capabilities:
+ * @photo: #GstPhotography interface of a #GstElement
+ *
+ * Get #GstPhotoCaps bitmask value that indicates what photography
+ * interface features the #GstElement supports
+ *
+ * Returns: #GstPhotoCaps value
+ */
+EXPORT_C
+GstPhotoCaps
+gst_photography_get_capabilities (GstPhotography * photo)
+{
+  GstPhotographyInterface *iface;
+  g_return_val_if_fail (photo != NULL, GST_PHOTOGRAPHY_CAPS_NONE);
+
+  iface = GST_PHOTOGRAPHY_GET_IFACE (photo);
+  if (iface->get_capabilities) {
+    return iface->get_capabilities (photo);
+  } else {
+    return GST_PHOTOGRAPHY_CAPS_NONE;
+  }
+}
+
+/**
+ * gst_photography_prepare_for_capture:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @func: callback that is called after capturing has been prepared
+ * @user_data: user data that will be passed to the callback @func
+ *
+ * Start preparations for capture. @func callback is called after
+ * preparations are done.
+ */
+EXPORT_C
+void
+gst_photography_prepare_for_capture (GstPhotography * photo,
+    GstPhotoCapturePrepared func, gpointer user_data)
+{
+  GstPhotographyInterface *iface;
+  g_return_if_fail (photo != NULL);
+
+  iface = GST_PHOTOGRAPHY_GET_IFACE (photo);
+  if (iface->prepare_for_capture) {
+    iface->prepare_for_capture (photo, func, user_data);
+  }
+}
+
+/**
+ * gst_photography_set_autofocus:
+ * @photo: #GstPhotography interface of a #GstElement
+ * @on: %TRUE to start autofocusing, %FALSE to stop autofocusing
+ *
+ * Start or stop autofocusing. %GST_PHOTOGRAPHY_AUTOFOCUS_DONE
+ * message is posted to bus when autofocusing has finished.
+ */
+EXPORT_C
+void
+gst_photography_set_autofocus (GstPhotography * photo, gboolean on)
+{
+  GstPhotographyInterface *iface;
+  g_return_if_fail (photo != NULL);
+
+  iface = GST_PHOTOGRAPHY_GET_IFACE (photo);
+  if (iface->set_autofocus) {
+    iface->set_autofocus (photo, on);
+  }
+}