gstreamer/gst/camerabin/gstcamerabinphotography.c

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2009-02-05 13:48:32 +00:00
/*
* 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;
}