/*

 * GStreamer

 * Copyright (C) 2008 Nokia Corporation <multimedia@maemo.org>

 *

 * Photography interface implementation for camerabin.

 *

 * 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 "gstcamerabinphotography.h"

#include "gstcamerabin.h"

GST_DEBUG_CATEGORY_STATIC (camerabinphoto_debug);

#define GST_CAT_DEFAULT camerabinphoto_debug

#define PHOTOGRAPHY_IS_OK(photo_elem) (GST_IS_ELEMENT (photo_elem) && \

                                       gst_element_implements_interface (photo_elem, GST_TYPE_PHOTOGRAPHY))

#define GST_PHOTOGRAPHY_IMPL_TEMPLATE(function_name, param_type) \

static gboolean \

gst_camerabin_set_ ## function_name (GstPhotography *photo, param_type param) \

{ \

  GstCameraBin *camera; \

  gboolean ret = FALSE; \

  g_return_val_if_fail (photo != NULL, FALSE); \

  camera = GST_CAMERABIN (photo); \

  if (PHOTOGRAPHY_IS_OK (camera->src_vid_src)) { \

    ret = gst_photography_set_ ## function_name (GST_PHOTOGRAPHY (camera->src_vid_src), param); \

  } \

  return ret; \

} \

static gboolean \

gst_camerabin_get_ ## function_name (GstPhotography *photo, param_type * param) \

{ \

  GstCameraBin *camera; \

  gboolean ret = FALSE; \

  g_return_val_if_fail (photo != NULL, FALSE); \

  camera = GST_CAMERABIN (photo); \

  if (PHOTOGRAPHY_IS_OK (camera->src_vid_src)) { \

    ret = gst_photography_get_ ## function_name (GST_PHOTOGRAPHY (camera->src_vid_src), param); \

  } \

  return ret; \

}

GST_PHOTOGRAPHY_IMPL_TEMPLATE (ev_compensation, gfloat);

GST_PHOTOGRAPHY_IMPL_TEMPLATE (iso_speed, guint);

GST_PHOTOGRAPHY_IMPL_TEMPLATE (white_balance_mode, GstWhiteBalanceMode);

GST_PHOTOGRAPHY_IMPL_TEMPLATE (colour_tone_mode, GstColourToneMode);

GST_PHOTOGRAPHY_IMPL_TEMPLATE (flash_mode, GstFlashMode);

static gboolean

gst_camerabin_set_zoom (GstPhotography * photo, gfloat zoom)

{

  GstCameraBin *camera;

  g_return_val_if_fail (photo != NULL, FALSE);

  camera = GST_CAMERABIN (photo);

  /* camerabin can zoom by itself */

  g_object_set (camera, "zoom", (gint) (CLAMP (zoom, 1.0, 10.0) * 100), NULL);

  return TRUE;

}

static gboolean

gst_camerabin_get_zoom (GstPhotography * photo, gfloat * zoom)

{

  GstCameraBin *camera;

  gint cb_zoom = 0;

  g_return_val_if_fail (photo != NULL, FALSE);

  camera = GST_CAMERABIN (photo);

  g_object_get (camera, "zoom", &cb_zoom, NULL);

  *zoom = (gfloat) (cb_zoom / 100.0);

  return TRUE;

}

static gboolean

gst_camerabin_set_scene_mode (GstPhotography * photo, GstSceneMode scene_mode)

{

  GstCameraBin *camera;

  gboolean ret = FALSE;

  g_return_val_if_fail (photo != NULL, FALSE);

  camera = GST_CAMERABIN (photo);

  if (scene_mode == GST_PHOTOGRAPHY_SCENE_MODE_NIGHT) {

    GST_DEBUG ("enabling night mode, lowering fps");

    /* Make camerabin select the lowest allowed frame rate */

    camera->night_mode = TRUE;

    /* Remember frame rate before setting night mode */

    camera->pre_night_fps_n = camera->fps_n;

    camera->pre_night_fps_d = camera->fps_d;

    g_signal_emit_by_name (camera, "user-res-fps", camera->width,

        camera->height, 0, 0, 0);

  } else {

    if (camera->night_mode) {

      GST_DEBUG ("disabling night mode, restoring fps to %d/%d",

          camera->pre_night_fps_n, camera->pre_night_fps_d);

      camera->night_mode = FALSE;

      g_signal_emit_by_name (camera, "user-res-fps", camera->width,

          camera->height, camera->pre_night_fps_n, camera->pre_night_fps_d, 0);

    }

  }

  if (PHOTOGRAPHY_IS_OK (camera->src_vid_src)) {

    ret = gst_photography_set_scene_mode (GST_PHOTOGRAPHY (camera->src_vid_src),

        scene_mode);

  }

  return ret;

}

static gboolean

gst_camerabin_get_scene_mode (GstPhotography * photo, GstSceneMode * scene_mode)

{

  GstCameraBin *camera;

  gboolean ret = FALSE;

  g_return_val_if_fail (photo != NULL, FALSE);

  camera = GST_CAMERABIN (photo);

  if (PHOTOGRAPHY_IS_OK (camera->src_vid_src)) {

    ret = gst_photography_get_scene_mode (GST_PHOTOGRAPHY (camera->src_vid_src),

        scene_mode);

  }

  return ret;

}

static GstPhotoCaps

gst_camerabin_get_capabilities (GstPhotography * photo)

{

  GstCameraBin *camera;

  /* camerabin can zoom by itself */

  GstPhotoCaps pcaps = GST_PHOTOGRAPHY_CAPS_ZOOM;

  g_return_val_if_fail (photo != NULL, FALSE);

  camera = GST_CAMERABIN (photo);

  if (GST_IS_ELEMENT (camera->src_vid_src) &&

      gst_element_implements_interface (camera->src_vid_src,

          GST_TYPE_PHOTOGRAPHY)) {

    GstPhotography *p2 = GST_PHOTOGRAPHY (camera->src_vid_src);

    pcaps |= gst_photography_get_capabilities (p2);

  }

  return pcaps;

}

static void

gst_camerabin_set_autofocus (GstPhotography * photo, gboolean on)

{

  GstCameraBin *camera;

  g_return_if_fail (photo != NULL);

  camera = GST_CAMERABIN (photo);

  GST_DEBUG_OBJECT (camera, "setting autofocus %s", on ? "ON" : "OFF");

  if (PHOTOGRAPHY_IS_OK (camera->src_vid_src)) {

    gst_photography_set_autofocus (GST_PHOTOGRAPHY (camera->src_vid_src), on);

  }

}

void

gst_camerabin_photography_init (GstPhotographyInterface * iface)

{

  GST_DEBUG_CATEGORY_INIT (camerabinphoto_debug, "camerabinphoto", 0,

      "Camerabin photography interface debugging");

  GST_INFO ("initing");

  iface->set_ev_compensation = gst_camerabin_set_ev_compensation;

  iface->get_ev_compensation = gst_camerabin_get_ev_compensation;

  iface->set_iso_speed = gst_camerabin_set_iso_speed;

  iface->get_iso_speed = gst_camerabin_get_iso_speed;

  iface->set_white_balance_mode = gst_camerabin_set_white_balance_mode;

  iface->get_white_balance_mode = gst_camerabin_get_white_balance_mode;

  iface->set_colour_tone_mode = gst_camerabin_set_colour_tone_mode;

  iface->get_colour_tone_mode = gst_camerabin_get_colour_tone_mode;

  iface->set_scene_mode = gst_camerabin_set_scene_mode;

  iface->get_scene_mode = gst_camerabin_get_scene_mode;

  iface->set_flash_mode = gst_camerabin_set_flash_mode;

  iface->get_flash_mode = gst_camerabin_get_flash_mode;

  iface->set_zoom = gst_camerabin_set_zoom;

  iface->get_zoom = gst_camerabin_get_zoom;

  iface->get_capabilities = gst_camerabin_get_capabilities;

  iface->set_autofocus = gst_camerabin_set_autofocus;

}