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gstreamer/sys/androidcamera/gstahcsrc.c
Youness Alaoui ebbf475437 androidcamera: Add element documentation
2016-01-21 13:48:44 -05:00

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/* GStreamer android.hardware.Camera Source
*
* Copyright (C) 2012, Cisco Systems, Inc.
* Author: Youness Alaoui <youness.alaoui@collabora.co.uk>
*
* 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.
*/
/**
* SECTION:element-ahcsrc
*
* ahcsrc can be used to capture video from android devices. It uses the
* android.hardware.Camera Java API to capture from the system's cameras.
*
* In order for the plugin to get registered, it must be able to find its
* Java callbacks class. That class is embedded as a jar file inside the source
* element (if properly compiled) and will be written to a temporary directory
* so it can be loaded into the virtual machine.
* In order for it to work, an environment variable must be set to a writable
* directory.
* The source will look for the environment variable “TMP” which must contain
* the absolute path to a writable directory.
* It can be retreived using the following Java code :
* |[
* context.getCacheDir().getAbsolutePath();
* ]|
* Where the @context variable is an object of type android.content.Context
* (including its subclasses android.app.Activity or android.app.Application).
* Another optional environment variable can be set for pointing to the
* optimized dex classes directory. If the environment variable “DEX” is
* available, it will be used, otherwise, the directory in the “TMP” environment
* variable will be used for the optimized dex directory.
* The system dex directory can be obtained using the following Java code :
* |[
* context.getDir(“dex”, 0).getAbsolutePath();
* ]|
*
* <note>
* Those environment variable must be set before gst_init is called from
* the native code.
* </note>
*
* <note>
* If the “TMP” environment variable is not available or the directory is not
* writable or any other issue happens while trying to load the embedded jar
* file, then the source will fallback on trying to load the class directly
* from the running application.
* The file com/gstreamer/GstAhcCallback.java in the source's directory can be
* copied into the Android application so it can be loaded at runtime
* as a fallback mechanism.
* </note>
*
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#define GST_USE_UNSTABLE_API
#include <gst/video/video.h>
#include <gst/interfaces/propertyprobe.h>
#include <gst/interfaces/photography.h>
#include "gstahcsrc.h"
#include "gst-dvm.h"
/* GObject */
static void gst_ahc_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_ahc_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_ahc_src_dispose (GObject * object);
/* GstElement */
static GstStateChangeReturn gst_ahc_src_change_state (GstElement * element,
GstStateChange transition);
/* GstBaseSrc */
static GstCaps *gst_ahc_src_getcaps (GstBaseSrc * src);
static gboolean gst_ahc_src_setcaps (GstBaseSrc * src, GstCaps * caps);
static void gst_ahc_src_fixate (GstBaseSrc * basesrc, GstCaps * caps);
static gboolean gst_ahc_src_start (GstBaseSrc * bsrc);
static gboolean gst_ahc_src_stop (GstBaseSrc * bsrc);
static gboolean gst_ahc_src_unlock (GstBaseSrc * bsrc);
static gboolean gst_ahc_src_unlock_stop (GstBaseSrc * bsrc);
static GstFlowReturn gst_ahc_src_create (GstPushSrc * src, GstBuffer ** buffer);
static gboolean gst_ahc_src_query (GstBaseSrc * bsrc, GstQuery * query);
/* GstPropertyProbe */
static void gst_ahc_src_implements_interface_init (GstImplementsInterfaceClass
* klass);
static void gst_ahc_src_property_probe_interface_init (GstPropertyProbeInterface
* iface);
static void gst_ahc_src_photography_interface_init (GstPhotographyInterface
* iface);
static void gst_ahc_src_init_interfaces (GType type);
/* GstPhotography */
static gboolean gst_ahc_src_get_ev_compensation (GstPhotography * photo,
gfloat * ev_comp);
static gboolean _white_balance_to_enum (const gchar * white_balance,
GstWhiteBalanceMode * mode);
static gboolean gst_ahc_src_get_white_balance_mode (GstPhotography * photo,
GstWhiteBalanceMode * wb_mode);
static gboolean _color_effects_to_enum (const gchar * color_effect,
GstColourToneMode * mode);
static gboolean gst_ahc_src_get_colour_tone_mode (GstPhotography * photo,
GstColourToneMode * tone_mode);
static gboolean _scene_modes_to_enum (const gchar * scene, GstSceneMode * mode);
static gboolean gst_ahc_src_get_scene_mode (GstPhotography * photo,
GstSceneMode * scene_mode);
static gboolean _flash_modes_to_enum (const gchar * flash, GstFlashMode * mode);
static gboolean gst_ahc_src_get_flash_mode (GstPhotography * photo,
GstFlashMode * flash_mode);
static gboolean gst_ahc_src_get_zoom (GstPhotography * photo, gfloat * zoom);
static gboolean _antibanding_to_enum (const gchar * antibanding,
GstFlickerReductionMode * mode);
static gboolean gst_ahc_src_get_flicker_mode (GstPhotography * photo,
GstFlickerReductionMode * flicker_mode);
static gboolean _focus_modes_to_enum (const gchar * focus, GstFocusMode * mode);
static gboolean gst_ahc_src_get_focus_mode (GstPhotography * photo,
GstFocusMode * focus_mode);
static gboolean gst_ahc_src_set_ev_compensation (GstPhotography * photo,
gfloat ev_comp);
static gboolean gst_ahc_src_set_white_balance_mode (GstPhotography * photo,
GstWhiteBalanceMode wb_mode);
static gboolean gst_ahc_src_set_colour_tone_mode (GstPhotography * photo,
GstColourToneMode tone_mode);
static gboolean gst_ahc_src_set_scene_mode (GstPhotography * photo,
GstSceneMode scene_mode);
static gboolean gst_ahc_src_set_flash_mode (GstPhotography * photo,
GstFlashMode flash_mode);
static gboolean gst_ahc_src_set_zoom (GstPhotography * photo, gfloat zoom);
static gboolean gst_ahc_src_set_flicker_mode (GstPhotography * photo,
GstFlickerReductionMode flicker_mode);
static gboolean gst_ahc_src_set_focus_mode (GstPhotography * photo,
GstFocusMode focus_mode);
static GstPhotoCaps gst_ahc_src_get_capabilities (GstPhotography * photo);
static void gst_ahc_src_set_autofocus (GstPhotography * photo, gboolean on);
/* GstAHCSrc */
static void gst_ahc_src_close (GstAHCSrc * self);
static void gst_ahc_src_on_preview_frame (jbyteArray data, gpointer user_data);
static void gst_ahc_src_on_error (gint error, gpointer user_data);
static void gst_ahc_src_on_auto_focus (gboolean success, gpointer user_data);
#define NUM_CALLBACK_BUFFERS 5
#define GST_AHC_SRC_CAPS_STR \
GST_VIDEO_CAPS_YUV (" { YV12 , YUY2 , NV21 , NV16 }") ";" \
GST_VIDEO_CAPS_RGB_16
static GstStaticPadTemplate gst_ahc_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_AHC_SRC_CAPS_STR));
GST_DEBUG_CATEGORY_STATIC (gst_ahc_src_debug);
#define GST_CAT_DEFAULT gst_ahc_src_debug
enum
{
PROP_0,
PROP_DEVICE,
PROP_DEVICE_FACING,
PROP_DEVICE_ORIENTATION,
PROP_FOCAL_LENGTH,
PROP_HORIZONTAL_VIEW_ANGLE,
PROP_VERTICAL_VIEW_ANGLE,
PROP_VIDEO_STABILIZATION,
PROP_WB_MODE,
PROP_COLOUR_TONE,
PROP_SCENE_MODE,
PROP_FLASH_MODE,
PROP_NOISE_REDUCTION,
PROP_CAPABILITIES,
PROP_EV_COMP,
PROP_ISO_SPEED,
PROP_APERTURE,
PROP_EXPOSURE,
PROP_IMAGE_CAPTURE_SUPPORTED_CAPS,
PROP_IMAGE_PREVIEW_SUPPORTED_CAPS,
PROP_FLICKER_MODE,
PROP_FOCUS_MODE,
PROP_ZOOM,
PROP_SMOOTH_ZOOM,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
#define DEFAULT_DEVICE "0"
GST_BOILERPLATE_FULL (GstAHCSrc, gst_ahc_src, GstPushSrc, GST_TYPE_PUSH_SRC,
gst_ahc_src_init_interfaces);
#define CAMERA_FACING_BACK 0
#define CAMERA_FACING_FRONT 1
static GType
gst_ahc_src_facing_get_type (void)
{
static GType type = 0;
static const GEnumValue types[] = {
{CAMERA_FACING_BACK, "Back", "back"},
{CAMERA_FACING_FRONT, "Front", "front"},
{0, NULL, NULL}
};
if (!type) {
type = g_enum_register_static ("GstAHCSrcFacing", types);
}
return type;
}
#define GST_AHC_SRC_FACING_TYPE (gst_ahc_src_facing_get_type())
static void
gst_ahc_src_init_interfaces (GType type)
{
static const GInterfaceInfo ahcsrc_propertyprobe_info = {
(GInterfaceInitFunc) gst_ahc_src_property_probe_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo ahcsrc_photography_info = {
(GInterfaceInitFunc) gst_ahc_src_photography_interface_init,
NULL,
NULL,
};
static const GInterfaceInfo ahcsrc_implements_interface_info = {
(GInterfaceInitFunc) gst_ahc_src_implements_interface_init,
NULL,
NULL,
};
g_type_add_interface_static (type, GST_TYPE_PROPERTY_PROBE,
&ahcsrc_propertyprobe_info);
g_type_add_interface_static (type, GST_TYPE_IMPLEMENTS_INTERFACE,
&ahcsrc_implements_interface_info);
g_type_add_interface_static (type, GST_TYPE_PHOTOGRAPHY,
&ahcsrc_photography_info);
}
static void
gst_ahc_src_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
GST_DEBUG_CATEGORY_INIT (gst_ahc_src_debug, "ahcsrc", 0,
"android.hardware.Camera source element");
gst_element_class_add_static_pad_template (gstelement_class,
&gst_ahc_src_pad_template);
gst_element_class_set_details_simple (gstelement_class,
"Android Camera Source",
"Source/Video",
"Reads frames from android.hardware.Camera class into buffers",
"Youness Alaoui <youness.alaoui@collabora.co.uk>");
}
static void
gst_ahc_src_class_init (GstAHCSrcClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstPushSrcClass *gstpushsrc_class = GST_PUSH_SRC_CLASS (klass);
GstBaseSrcClass *gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
gobject_class->set_property = gst_ahc_src_set_property;
gobject_class->get_property = gst_ahc_src_get_property;
gobject_class->dispose = gst_ahc_src_dispose;
element_class->change_state = gst_ahc_src_change_state;
gstbasesrc_class->get_caps = gst_ahc_src_getcaps;
gstbasesrc_class->set_caps = gst_ahc_src_setcaps;
gstbasesrc_class->fixate = gst_ahc_src_fixate;
gstbasesrc_class->start = gst_ahc_src_start;
gstbasesrc_class->stop = gst_ahc_src_stop;
gstbasesrc_class->unlock = gst_ahc_src_unlock;
gstbasesrc_class->unlock_stop = gst_ahc_src_unlock_stop;
gstbasesrc_class->query = gst_ahc_src_query;
gstpushsrc_class->create = gst_ahc_src_create;
/**
* GstAHCSrc:device:
*
* The Device ID of the camera to capture from
*/
properties[PROP_DEVICE] = g_param_spec_string ("device",
"device", "Device ID", DEFAULT_DEVICE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (gobject_class, PROP_DEVICE,
properties[PROP_DEVICE]);
/**
* GstAHCSrc:device-orientation:
*
* The orientation of the currently set camera @device.
* The value is the angle that the camera image needs to be rotated clockwise
* so it shows correctly on the display in its natural orientation.
* It should be 0, 90, 180, or 270.
*/
properties[PROP_DEVICE_ORIENTATION] = g_param_spec_int ("device-orientation",
"Device orientation", "The orientation of the camera image",
0, 360, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (gobject_class, PROP_DEVICE_ORIENTATION,
properties[PROP_DEVICE_ORIENTATION]);
/**
* GstAHCSrc:device-facing:
*
* The direction that the currently select camera @device faces.
*
* A value of 0 means the camera is facing the opposite direction as the
* screen while a value of 1 means the camera is facing the same direction
* as the screen.
*/
properties[PROP_DEVICE_FACING] = g_param_spec_enum ("device-facing",
"Device facing", "The direction that the camera faces",
GST_AHC_SRC_FACING_TYPE, CAMERA_FACING_BACK,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (gobject_class, PROP_DEVICE_FACING,
properties[PROP_DEVICE_FACING]);
/**
* GstAHCSrc:focal-length:
*
* Gets the focal length (in millimeter) of the camera.
*/
properties[PROP_FOCAL_LENGTH] = g_param_spec_float ("focal-length",
"Focal length", "Gets the focal length (in millimeter) of the camera",
-G_MAXFLOAT, G_MAXFLOAT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (gobject_class, PROP_FOCAL_LENGTH,
properties[PROP_FOCAL_LENGTH]);
/**
* GstAHCSrc:horizontal-view-angle:
*
* Gets the horizontal angle of view in degrees.
*/
properties[PROP_HORIZONTAL_VIEW_ANGLE] =
g_param_spec_float ("horizontal-view-angle", "Horizontal view angle",
"Gets the horizontal angle of view in degrees",
-G_MAXFLOAT, G_MAXFLOAT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (gobject_class, PROP_HORIZONTAL_VIEW_ANGLE,
properties[PROP_HORIZONTAL_VIEW_ANGLE]);
/**
* GstAHCSrc:vertical-view-angle:
*
* Gets the vertical angle of view in degrees.
*/
properties[PROP_VERTICAL_VIEW_ANGLE] =
g_param_spec_float ("vertical-view-angle", "Vertical view angle",
"Gets the vertical angle of view in degrees",
-G_MAXFLOAT, G_MAXFLOAT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (gobject_class, PROP_VERTICAL_VIEW_ANGLE,
properties[PROP_VERTICAL_VIEW_ANGLE]);
/**
* GstAHCSrc:video-stabilizatio:
*
* Video stabilization reduces the shaking due to the motion of the camera.
*/
properties[PROP_VIDEO_STABILIZATION] =
g_param_spec_boolean ("video-stabilization", "Video stabilization",
"Video stabilization reduces the shaking due to the motion of the camera",
FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (gobject_class, PROP_VIDEO_STABILIZATION,
properties[PROP_VIDEO_STABILIZATION]);
/**
* GstAHCSrc:smooth-zoom:
*
* If enabled, then smooth zooming will be used when the @zoom property is
* changed. In that case, the @zoom property can be queried to know the
* current zoom level while the smooth zoom is in progress.
*/
properties[PROP_SMOOTH_ZOOM] = g_param_spec_boolean ("smooth-zoom",
"Smooth Zoom", "Use smooth zoom when available",
FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (gobject_class, PROP_SMOOTH_ZOOM,
properties[PROP_SMOOTH_ZOOM]);
/* Override GstPhotography properties */
g_object_class_override_property (gobject_class, PROP_WB_MODE,
GST_PHOTOGRAPHY_PROP_WB_MODE);
properties[PROP_WB_MODE] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_WB_MODE);
g_object_class_override_property (gobject_class, PROP_COLOUR_TONE,
GST_PHOTOGRAPHY_PROP_COLOUR_TONE);
properties[PROP_COLOUR_TONE] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_COLOUR_TONE);
g_object_class_override_property (gobject_class, PROP_SCENE_MODE,
GST_PHOTOGRAPHY_PROP_SCENE_MODE);
properties[PROP_SCENE_MODE] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_SCENE_MODE);
g_object_class_override_property (gobject_class, PROP_FLASH_MODE,
GST_PHOTOGRAPHY_PROP_FLASH_MODE);
properties[PROP_FLASH_MODE] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_FLASH_MODE);
g_object_class_override_property (gobject_class, PROP_NOISE_REDUCTION,
GST_PHOTOGRAPHY_PROP_NOISE_REDUCTION);
properties[PROP_NOISE_REDUCTION] =
g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_NOISE_REDUCTION);
g_object_class_override_property (gobject_class, PROP_CAPABILITIES,
GST_PHOTOGRAPHY_PROP_CAPABILITIES);
properties[PROP_CAPABILITIES] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_CAPABILITIES);
g_object_class_override_property (gobject_class, PROP_EV_COMP,
GST_PHOTOGRAPHY_PROP_EV_COMP);
properties[PROP_EV_COMP] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_EV_COMP);
g_object_class_override_property (gobject_class, PROP_ISO_SPEED,
GST_PHOTOGRAPHY_PROP_ISO_SPEED);
properties[PROP_ISO_SPEED] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_ISO_SPEED);
g_object_class_override_property (gobject_class, PROP_APERTURE,
GST_PHOTOGRAPHY_PROP_APERTURE);
properties[PROP_APERTURE] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_APERTURE);
g_object_class_override_property (gobject_class, PROP_EXPOSURE,
GST_PHOTOGRAPHY_PROP_EXPOSURE);
properties[PROP_EXPOSURE] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_EXPOSURE);
g_object_class_override_property (gobject_class,
PROP_IMAGE_CAPTURE_SUPPORTED_CAPS,
GST_PHOTOGRAPHY_PROP_IMAGE_CAPTURE_SUPPORTED_CAPS);
properties[PROP_IMAGE_CAPTURE_SUPPORTED_CAPS] =
g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_IMAGE_CAPTURE_SUPPORTED_CAPS);
g_object_class_override_property (gobject_class,
PROP_IMAGE_PREVIEW_SUPPORTED_CAPS,
GST_PHOTOGRAPHY_PROP_IMAGE_PREVIEW_SUPPORTED_CAPS);
properties[PROP_IMAGE_PREVIEW_SUPPORTED_CAPS] =
g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_IMAGE_PREVIEW_SUPPORTED_CAPS);
g_object_class_override_property (gobject_class, PROP_FLICKER_MODE,
GST_PHOTOGRAPHY_PROP_FLICKER_MODE);
properties[PROP_FLICKER_MODE] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_FLICKER_MODE);
g_object_class_override_property (gobject_class, PROP_FOCUS_MODE,
GST_PHOTOGRAPHY_PROP_FOCUS_MODE);
properties[PROP_FOCUS_MODE] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_FOCUS_MODE);
g_object_class_override_property (gobject_class, PROP_ZOOM,
GST_PHOTOGRAPHY_PROP_ZOOM);
properties[PROP_ZOOM] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_ZOOM);
klass->probe_properties = NULL;
}
static gboolean
_data_queue_check_full (GstDataQueue * queue, guint visible,
guint bytes, guint64 time, gpointer checkdata)
{
return FALSE;
}
static void
gst_ahc_src_init (GstAHCSrc * self, GstAHCSrcClass * klass)
{
gst_base_src_set_live (GST_BASE_SRC (self), TRUE);
gst_base_src_set_format (GST_BASE_SRC (self), GST_FORMAT_TIME);
gst_base_src_set_do_timestamp (GST_BASE_SRC (self), FALSE);
self->camera = NULL;
self->texture = NULL;
self->data = NULL;
self->queue = gst_data_queue_new (_data_queue_check_full, NULL);
self->start = FALSE;
self->previous_ts = GST_CLOCK_TIME_NONE;
}
static void
gst_ahc_src_dispose (GObject * object)
{
GstAHCSrc *self = GST_AHC_SRC (object);
if (self->queue)
g_object_unref (self->queue);
self->queue = NULL;
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_ahc_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAHCSrc *self = GST_AHC_SRC (object);
(void) self;
switch (prop_id) {
case PROP_DEVICE:{
const gchar *dev = g_value_get_string (value);
gchar *endptr = NULL;
guint64 device;
device = g_ascii_strtoll (dev, &endptr, 10);
if (endptr != dev && endptr[0] == 0 && device < G_MAXINT)
self->device = (gint) device;
}
break;
case PROP_VIDEO_STABILIZATION:
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
gst_ahc_parameters_set_video_stabilization (params,
g_value_get_boolean (value));
gst_ah_camera_set_parameters (self->camera, params);
gst_ahc_parameters_free (params);
}
}
break;
case PROP_SMOOTH_ZOOM:
self->smooth_zoom = g_value_get_boolean (value);
break;
case PROP_WB_MODE:{
GstWhiteBalanceMode wb = g_value_get_enum (value);
gst_ahc_src_set_white_balance_mode (GST_PHOTOGRAPHY (self), wb);
}
break;
case PROP_COLOUR_TONE:{
GstColourToneMode tone = g_value_get_enum (value);
gst_ahc_src_set_colour_tone_mode (GST_PHOTOGRAPHY (self), tone);
}
break;
case PROP_SCENE_MODE:{
GstSceneMode scene = g_value_get_enum (value);
gst_ahc_src_set_scene_mode (GST_PHOTOGRAPHY (self), scene);
}
break;
case PROP_FLASH_MODE:{
GstFlashMode flash = g_value_get_enum (value);
gst_ahc_src_set_flash_mode (GST_PHOTOGRAPHY (self), flash);
}
break;
case PROP_EV_COMP:{
gfloat ev = g_value_get_float (value);
gst_ahc_src_set_ev_compensation (GST_PHOTOGRAPHY (self), ev);
}
break;
case PROP_FLICKER_MODE:{
GstFlickerReductionMode flicker = g_value_get_enum (value);
gst_ahc_src_set_flicker_mode (GST_PHOTOGRAPHY (self), flicker);
}
break;
case PROP_FOCUS_MODE:{
GstFocusMode focus = g_value_get_enum (value);
gst_ahc_src_set_focus_mode (GST_PHOTOGRAPHY (self), focus);
}
break;
case PROP_ZOOM:{
gfloat zoom = g_value_get_float (value);
gst_ahc_src_set_zoom (GST_PHOTOGRAPHY (self), zoom);
}
break;
case PROP_NOISE_REDUCTION:
case PROP_ISO_SPEED:
case PROP_APERTURE:
case PROP_EXPOSURE:
case PROP_IMAGE_CAPTURE_SUPPORTED_CAPS:
case PROP_IMAGE_PREVIEW_SUPPORTED_CAPS:
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_ahc_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstAHCSrc *self = GST_AHC_SRC (object);
(void) self;
switch (prop_id) {
case PROP_DEVICE:{
gchar *dev = g_strdup_printf ("%d", self->device);
g_value_take_string (value, dev);
}
break;
case PROP_DEVICE_FACING:{
GstAHCCameraInfo info;
if (gst_ah_camera_get_camera_info (self->device, &info))
g_value_set_enum (value, info.facing == CameraInfo_CAMERA_FACING_BACK ?
CAMERA_FACING_BACK : CAMERA_FACING_FRONT);
else
g_value_set_enum (value, CAMERA_FACING_BACK);
}
break;
case PROP_DEVICE_ORIENTATION:{
GstAHCCameraInfo info;
if (gst_ah_camera_get_camera_info (self->device, &info))
g_value_set_int (value, info.orientation);
else
g_value_set_int (value, 0);
}
break;
case PROP_FOCAL_LENGTH:
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
g_value_set_float (value,
gst_ahc_parameters_get_focal_length (params));
gst_ahc_parameters_free (params);
}
}
break;
case PROP_HORIZONTAL_VIEW_ANGLE:
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
g_value_set_float (value,
gst_ahc_parameters_get_horizontal_view_angle (params));
gst_ahc_parameters_free (params);
}
}
break;
case PROP_VERTICAL_VIEW_ANGLE:
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
g_value_set_float (value,
gst_ahc_parameters_get_vertical_view_angle (params));
gst_ahc_parameters_free (params);
}
}
break;
case PROP_VIDEO_STABILIZATION:
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
g_value_set_boolean (value,
gst_ahc_parameters_get_video_stabilization (params));
gst_ahc_parameters_free (params);
}
}
break;
case PROP_SMOOTH_ZOOM:
g_value_set_boolean (value, self->smooth_zoom);
break;
case PROP_WB_MODE:{
GstWhiteBalanceMode wb;
if (gst_ahc_src_get_white_balance_mode (GST_PHOTOGRAPHY (self), &wb))
g_value_set_enum (value, wb);
}
break;
case PROP_COLOUR_TONE:{
GstColourToneMode tone;
if (gst_ahc_src_get_colour_tone_mode (GST_PHOTOGRAPHY (self), &tone))
g_value_set_enum (value, tone);
}
break;
case PROP_SCENE_MODE:{
GstSceneMode scene;
if (gst_ahc_src_get_scene_mode (GST_PHOTOGRAPHY (self), &scene))
g_value_set_enum (value, scene);
}
break;
case PROP_FLASH_MODE:{
GstFlashMode flash;
if (gst_ahc_src_get_flash_mode (GST_PHOTOGRAPHY (self), &flash))
g_value_set_enum (value, flash);
}
break;
case PROP_CAPABILITIES:{
GstPhotoCaps caps;
caps = gst_ahc_src_get_capabilities (GST_PHOTOGRAPHY (self));
g_value_set_ulong (value, caps);
}
break;
case PROP_EV_COMP:{
gfloat ev;
if (gst_ahc_src_get_ev_compensation (GST_PHOTOGRAPHY (self), &ev))
g_value_set_float (value, ev);
}
break;
case PROP_FLICKER_MODE:{
GstFlickerReductionMode flicker;
if (gst_ahc_src_get_flicker_mode (GST_PHOTOGRAPHY (self), &flicker))
g_value_set_enum (value, flicker);
}
break;
case PROP_FOCUS_MODE:{
GstFocusMode focus;
if (gst_ahc_src_get_focus_mode (GST_PHOTOGRAPHY (self), &focus))
g_value_set_enum (value, focus);
}
break;
case PROP_ZOOM:{
gfloat zoom;
if (gst_ahc_src_get_zoom (GST_PHOTOGRAPHY (self), &zoom))
g_value_set_float (value, zoom);
}
break;
case PROP_IMAGE_CAPTURE_SUPPORTED_CAPS:
case PROP_IMAGE_PREVIEW_SUPPORTED_CAPS:
case PROP_NOISE_REDUCTION:
case PROP_ISO_SPEED:
case PROP_APERTURE:
case PROP_EXPOSURE:
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_ahc_src_interface_supported (GstImplementsInterface * iface,
GType iface_type)
{
if (iface_type == GST_TYPE_PHOTOGRAPHY ||
iface_type == GST_TYPE_PROPERTY_PROBE)
return TRUE;
else
return FALSE;
}
static void
gst_ahc_src_implements_interface_init (GstImplementsInterfaceClass * klass)
{
klass->supported = gst_ahc_src_interface_supported;
}
static const GList *
gst_ahc_src_probe_get_properties (GstPropertyProbe * probe)
{
GstAHCSrcClass *ahc_class = GST_AHC_SRC_CLASS (probe);
GList **list = &ahc_class->probe_properties;
if (!*list) {
*list = g_list_append (*list, properties[PROP_DEVICE]);
*list = g_list_append (*list, properties[PROP_EV_COMP]);
*list = g_list_append (*list, properties[PROP_ZOOM]);
*list = g_list_append (*list, properties[PROP_WB_MODE]);
*list = g_list_append (*list, properties[PROP_COLOUR_TONE]);
*list = g_list_append (*list, properties[PROP_FLASH_MODE]);
*list = g_list_append (*list, properties[PROP_FOCUS_MODE]);
*list = g_list_append (*list, properties[PROP_SCENE_MODE]);
*list = g_list_append (*list, properties[PROP_FLICKER_MODE]);
}
return *list;
}
#define PROBE_GET_ENUM_VALUES(name, type, struct_name) \
if (self->camera) { \
GstAHCParameters *params; \
\
params = gst_ah_camera_get_parameters (self->camera); \
if (params) { \
GList *list = gst_ahc_parameters_get_supported_##name (params); \
\
if (list) { \
GValue value = { 0 }; \
GList *i; \
\
array = g_value_array_new (g_list_length (list)); \
g_value_init (&value, type); \
for (i = list; i; i = i->next) { \
struct_name mode; \
const gchar *name = i->data; \
\
if (_##name##_to_enum (name, &mode)) { \
g_value_set_enum (&value, mode); \
g_value_array_append (array, &value); \
} \
} \
g_value_unset (&value); \
} \
\
gst_ahc_parameters_supported_##name##_free (list); \
gst_ahc_parameters_free (params); \
} \
}
static GValueArray *
gst_ahc_src_probe_get_values (GstPropertyProbe * probe,
guint prop_id, const GParamSpec * pspec)
{
GstAHCSrc *self = GST_AHC_SRC (probe);
GValueArray *array = NULL;
/* g_object_class_find_property returns overriden property with
* param_id == 0, so we can't switch/case the prop_id and
* we need to check the pspec instead */
if (pspec == properties[PROP_DEVICE]) {
GValue value = { 0 };
gint num_cams = gst_ah_camera_get_number_of_cameras ();
gint i;
array = g_value_array_new (num_cams);
g_value_init (&value, G_TYPE_STRING);
for (i = 0; i < num_cams; i++) {
g_value_take_string (&value, g_strdup_printf ("%d", i));
g_value_array_append (array, &value);
}
g_value_unset (&value);
} else if (pspec == properties[PROP_EV_COMP]) {
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
gint min, max;
gfloat step;
min = gst_ahc_parameters_get_min_exposure_compensation (params);
max = gst_ahc_parameters_get_max_exposure_compensation (params);
step = gst_ahc_parameters_get_exposure_compensation_step (params);
if (step != 0.0 && min != max) {
GValue value = { 0 };
gint i;
/* Min and Max are inclusive */
array = g_value_array_new (max - min + 1);
g_value_init (&value, G_TYPE_FLOAT);
for (i = min; i <= max; i++) {
g_value_set_float (&value, step * i);
g_value_array_append (array, &value);
}
g_value_unset (&value);
}
gst_ahc_parameters_free (params);
}
}
} else if (pspec == properties[PROP_ZOOM]) {
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
GList *zoom_ratios = gst_ahc_parameters_get_zoom_ratios (params);
gint max_zoom = gst_ahc_parameters_get_max_zoom (params);
if (zoom_ratios && g_list_length (zoom_ratios) == (max_zoom + 1)) {
GValue value = { 0 };
GList *i;
array = g_value_array_new (max_zoom + 1);
g_value_init (&value, G_TYPE_FLOAT);
for (i = zoom_ratios; i; i = i->next) {
gint zoom_value = GPOINTER_TO_INT (i->data);
gfloat zoom = (gfloat) zoom_value / 100.0;
g_value_set_float (&value, zoom);
g_value_array_append (array, &value);
}
g_value_unset (&value);
}
gst_ahc_parameters_zoom_ratios_free (zoom_ratios);
gst_ahc_parameters_free (params);
}
}
} else if (pspec == properties[PROP_WB_MODE]) {
PROBE_GET_ENUM_VALUES (white_balance, GST_TYPE_WHITE_BALANCE_MODE,
GstWhiteBalanceMode);
} else if (pspec == properties[PROP_COLOUR_TONE]) {
PROBE_GET_ENUM_VALUES (color_effects, GST_TYPE_COLOUR_TONE_MODE,
GstColourToneMode);
} else if (pspec == properties[PROP_FLASH_MODE]) {
PROBE_GET_ENUM_VALUES (flash_modes, GST_TYPE_FLASH_MODE, GstFlashMode);
} else if (pspec == properties[PROP_FOCUS_MODE]) {
PROBE_GET_ENUM_VALUES (focus_modes, GST_TYPE_FOCUS_MODE, GstFocusMode);
} else if (pspec == properties[PROP_SCENE_MODE]) {
PROBE_GET_ENUM_VALUES (scene_modes, GST_TYPE_SCENE_MODE, GstSceneMode);
} else if (pspec == properties[PROP_FLICKER_MODE]) {
PROBE_GET_ENUM_VALUES (antibanding, GST_TYPE_FLICKER_REDUCTION_MODE,
GstFlickerReductionMode);
} else {
G_OBJECT_WARN_INVALID_PROPERTY_ID (probe, prop_id, pspec);
}
return array;
}
static void
gst_ahc_src_property_probe_interface_init (GstPropertyProbeInterface * iface)
{
iface->get_properties = gst_ahc_src_probe_get_properties;
iface->get_values = gst_ahc_src_probe_get_values;
}
static gboolean
_antibanding_to_enum (const gchar * antibanding, GstFlickerReductionMode * mode)
{
if (antibanding == Parameters_ANTIBANDING_AUTO)
*mode = GST_PHOTOGRAPHY_FLICKER_REDUCTION_AUTO;
else if (antibanding == Parameters_ANTIBANDING_50HZ)
*mode = GST_PHOTOGRAPHY_FLICKER_REDUCTION_50HZ;
else if (antibanding == Parameters_ANTIBANDING_60HZ)
*mode = GST_PHOTOGRAPHY_FLICKER_REDUCTION_60HZ;
else if (antibanding == Parameters_ANTIBANDING_OFF)
*mode = GST_PHOTOGRAPHY_FLICKER_REDUCTION_OFF;
else
return FALSE;
return TRUE;
}
static gboolean
_white_balance_to_enum (const gchar * white_balance, GstWhiteBalanceMode * mode)
{
if (white_balance == Parameters_WHITE_BALANCE_AUTO)
*mode = GST_PHOTOGRAPHY_WB_MODE_AUTO;
else if (white_balance == Parameters_WHITE_BALANCE_INCANDESCENT)
*mode = GST_PHOTOGRAPHY_WB_MODE_TUNGSTEN;
else if (white_balance == Parameters_WHITE_BALANCE_FLUORESCENT)
*mode = GST_PHOTOGRAPHY_WB_MODE_FLUORESCENT;
else if (white_balance == Parameters_WHITE_BALANCE_WARM_FLUORESCENT)
*mode = GST_PHOTOGRAPHY_WB_MODE_WARM_FLUORESCENT;
else if (white_balance == Parameters_WHITE_BALANCE_DAYLIGHT)
*mode = GST_PHOTOGRAPHY_WB_MODE_DAYLIGHT;
else if (white_balance == Parameters_WHITE_BALANCE_CLOUDY_DAYLIGHT)
*mode = GST_PHOTOGRAPHY_WB_MODE_CLOUDY;
else if (white_balance == Parameters_WHITE_BALANCE_TWILIGHT)
*mode = GST_PHOTOGRAPHY_WB_MODE_SUNSET;
else if (white_balance == Parameters_WHITE_BALANCE_SHADE)
*mode = GST_PHOTOGRAPHY_WB_MODE_SHADE;
else
return FALSE;
return TRUE;
}
static gboolean
_color_effects_to_enum (const gchar * color_effect, GstColourToneMode * mode)
{
if (color_effect == Parameters_EFFECT_NONE)
*mode = GST_PHOTOGRAPHY_COLOUR_TONE_MODE_NORMAL;
else if (color_effect == Parameters_EFFECT_MONO)
*mode = GST_PHOTOGRAPHY_COLOUR_TONE_MODE_GRAYSCALE;
else if (color_effect == Parameters_EFFECT_NEGATIVE)
*mode = GST_PHOTOGRAPHY_COLOUR_TONE_MODE_NEGATIVE;
else if (color_effect == Parameters_EFFECT_SOLARIZE)
*mode = GST_PHOTOGRAPHY_COLOUR_TONE_MODE_SOLARIZE;
else if (color_effect == Parameters_EFFECT_SEPIA)
*mode = GST_PHOTOGRAPHY_COLOUR_TONE_MODE_SEPIA;
else if (color_effect == Parameters_EFFECT_POSTERIZE)
*mode = GST_PHOTOGRAPHY_COLOUR_TONE_MODE_POSTERIZE;
else if (color_effect == Parameters_EFFECT_WHITEBOARD)
*mode = GST_PHOTOGRAPHY_COLOUR_TONE_MODE_WHITEBOARD;
else if (color_effect == Parameters_EFFECT_BLACKBOARD)
*mode = GST_PHOTOGRAPHY_COLOUR_TONE_MODE_BLACKBOARD;
else if (color_effect == Parameters_EFFECT_AQUA)
*mode = GST_PHOTOGRAPHY_COLOUR_TONE_MODE_AQUA;
else
return FALSE;
return TRUE;
}
static gboolean
_scene_modes_to_enum (const gchar * scene, GstSceneMode * mode)
{
if (scene == Parameters_SCENE_MODE_AUTO)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_AUTO;
else if (scene == Parameters_SCENE_MODE_ACTION)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_ACTION;
else if (scene == Parameters_SCENE_MODE_PORTRAIT)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_PORTRAIT;
else if (scene == Parameters_SCENE_MODE_LANDSCAPE)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_LANDSCAPE;
else if (scene == Parameters_SCENE_MODE_NIGHT)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_NIGHT;
else if (scene == Parameters_SCENE_MODE_NIGHT_PORTRAIT)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_NIGHT_PORTRAIT;
else if (scene == Parameters_SCENE_MODE_THEATRE)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_THEATRE;
else if (scene == Parameters_SCENE_MODE_BEACH)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_BEACH;
else if (scene == Parameters_SCENE_MODE_SNOW)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_SNOW;
else if (scene == Parameters_SCENE_MODE_SUNSET)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_SUNSET;
else if (scene == Parameters_SCENE_MODE_STEADYPHOTO)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_STEADY_PHOTO;
else if (scene == Parameters_SCENE_MODE_FIREWORKS)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_FIREWORKS;
else if (scene == Parameters_SCENE_MODE_SPORTS)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_SPORT;
else if (scene == Parameters_SCENE_MODE_PARTY)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_PARTY;
else if (scene == Parameters_SCENE_MODE_CANDLELIGHT)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_CANDLELIGHT;
else if (scene == Parameters_SCENE_MODE_BARCODE)
*mode = GST_PHOTOGRAPHY_SCENE_MODE_BARCODE;
else
return FALSE;
return TRUE;
}
static gboolean
_flash_modes_to_enum (const gchar * flash, GstFlashMode * mode)
{
if (flash == Parameters_FLASH_MODE_OFF)
*mode = GST_PHOTOGRAPHY_FLASH_MODE_OFF;
else if (flash == Parameters_FLASH_MODE_AUTO)
*mode = GST_PHOTOGRAPHY_FLASH_MODE_AUTO;
else if (flash == Parameters_FLASH_MODE_ON)
*mode = GST_PHOTOGRAPHY_FLASH_MODE_ON;
else if (flash == Parameters_FLASH_MODE_RED_EYE)
*mode = GST_PHOTOGRAPHY_FLASH_MODE_RED_EYE;
else if (flash == Parameters_FLASH_MODE_TORCH)
*mode = GST_PHOTOGRAPHY_FLASH_MODE_FILL_IN;
else
return FALSE;
return TRUE;
}
static gboolean
_focus_modes_to_enum (const gchar * focus, GstFocusMode * mode)
{
if (focus == Parameters_FOCUS_MODE_AUTO)
*mode = GST_PHOTOGRAPHY_FOCUS_MODE_AUTO;
else if (focus == Parameters_FOCUS_MODE_INFINITY)
*mode = GST_PHOTOGRAPHY_FOCUS_MODE_INFINITY;
else if (focus == Parameters_FOCUS_MODE_MACRO)
*mode = GST_PHOTOGRAPHY_FOCUS_MODE_MACRO;
else if (focus == Parameters_FOCUS_MODE_FIXED)
*mode = GST_PHOTOGRAPHY_FOCUS_MODE_HYPERFOCAL;
else if (focus == Parameters_FOCUS_MODE_EDOF)
*mode = GST_PHOTOGRAPHY_FOCUS_MODE_EXTENDED;
else if (focus == Parameters_FOCUS_MODE_CONTINUOUS_VIDEO)
*mode = GST_PHOTOGRAPHY_FOCUS_MODE_CONTINUOUS_EXTENDED;
else if (focus == Parameters_FOCUS_MODE_CONTINUOUS_PICTURE)
*mode = GST_PHOTOGRAPHY_FOCUS_MODE_CONTINUOUS_NORMAL;
else
return FALSE;
return TRUE;
}
static gboolean
gst_ahc_src_get_ev_compensation (GstPhotography * photo, gfloat * ev_comp)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
gint ev, min, max;
gfloat step;
ev = gst_ahc_parameters_get_exposure_compensation (params);
min = gst_ahc_parameters_get_min_exposure_compensation (params);
max = gst_ahc_parameters_get_max_exposure_compensation (params);
step = gst_ahc_parameters_get_exposure_compensation_step (params);
if (step != 0.0 && min != max && min <= ev && ev <= max) {
if (ev_comp)
*ev_comp = ev * step;
ret = TRUE;
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_get_white_balance_mode (GstPhotography * photo,
GstWhiteBalanceMode * wb_mode)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
const gchar *wb = gst_ahc_parameters_get_white_balance (params);
GstWhiteBalanceMode mode = GST_PHOTOGRAPHY_WB_MODE_AUTO;
if (_white_balance_to_enum (wb, &mode)) {
ret = TRUE;
if (wb_mode)
*wb_mode = mode;
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_get_colour_tone_mode (GstPhotography * photo,
GstColourToneMode * tone_mode)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
const gchar *effect = gst_ahc_parameters_get_color_effect (params);
GstColourToneMode mode = GST_PHOTOGRAPHY_COLOUR_TONE_MODE_NORMAL;
if (_color_effects_to_enum (effect, &mode)) {
ret = TRUE;
if (tone_mode)
*tone_mode = mode;
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_get_scene_mode (GstPhotography * photo, GstSceneMode * scene_mode)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (scene_mode && self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
const gchar *scene = gst_ahc_parameters_get_scene_mode (params);
GstSceneMode mode = GST_PHOTOGRAPHY_SCENE_MODE_AUTO;
if (_scene_modes_to_enum (scene, &mode)) {
ret = TRUE;
if (scene_mode)
*scene_mode = mode;
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_get_flash_mode (GstPhotography * photo, GstFlashMode * flash_mode)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
const gchar *flash = gst_ahc_parameters_get_flash_mode (params);
GstFlashMode mode = GST_PHOTOGRAPHY_FLASH_MODE_OFF;
if (_flash_modes_to_enum (flash, &mode)) {
ret = TRUE;
if (flash_mode)
*flash_mode = mode;
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_get_zoom (GstPhotography * photo, gfloat * zoom)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
GList *zoom_ratios = gst_ahc_parameters_get_zoom_ratios (params);
gint zoom_idx = gst_ahc_parameters_get_zoom (params);
gint max_zoom = gst_ahc_parameters_get_max_zoom (params);
if (zoom_ratios && g_list_length (zoom_ratios) == (max_zoom + 1) &&
zoom_idx >= 0 && zoom_idx < max_zoom) {
gint zoom_value;
zoom_value = GPOINTER_TO_INT (g_list_nth_data (zoom_ratios, zoom_idx));
if (zoom)
*zoom = (gfloat) zoom_value / 100.0;
ret = TRUE;
}
gst_ahc_parameters_zoom_ratios_free (zoom_ratios);
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_get_flicker_mode (GstPhotography * photo,
GstFlickerReductionMode * flicker_mode)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
const gchar *antibanding = gst_ahc_parameters_get_antibanding (params);
GstFlickerReductionMode mode = GST_PHOTOGRAPHY_FLICKER_REDUCTION_AUTO;
if (_antibanding_to_enum (antibanding, &mode)) {
ret = TRUE;
if (flicker_mode)
*flicker_mode = mode;
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_get_focus_mode (GstPhotography * photo, GstFocusMode * focus_mode)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
const gchar *focus = gst_ahc_parameters_get_focus_mode (params);
GstFocusMode mode = GST_PHOTOGRAPHY_FOCUS_MODE_AUTO;
if (_focus_modes_to_enum (focus, &mode)) {
ret = TRUE;
if (focus_mode)
*focus_mode = mode;
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_set_ev_compensation (GstPhotography * photo, gfloat ev_comp)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
gint ev, min, max;
gfloat step;
ev = gst_ahc_parameters_get_exposure_compensation (params);
min = gst_ahc_parameters_get_min_exposure_compensation (params);
max = gst_ahc_parameters_get_max_exposure_compensation (params);
step = gst_ahc_parameters_get_exposure_compensation_step (params);
if (step != 0.0 && min != max &&
(min * step) <= ev_comp && ev_comp <= (max * step)) {
ev = ev_comp / step;
if ((ev * step) == ev_comp) {
gst_ahc_parameters_set_exposure_compensation (params, ev);
ret = gst_ah_camera_set_parameters (self->camera, params);
}
}
}
gst_ahc_parameters_free (params);
}
return ret;
}
static gboolean
gst_ahc_src_set_white_balance_mode (GstPhotography * photo,
GstWhiteBalanceMode wb_mode)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
const gchar *white_balance = NULL;
switch (wb_mode) {
case GST_PHOTOGRAPHY_WB_MODE_AUTO:
white_balance = Parameters_WHITE_BALANCE_AUTO;
break;
case GST_PHOTOGRAPHY_WB_MODE_DAYLIGHT:
white_balance = Parameters_WHITE_BALANCE_DAYLIGHT;
break;
case GST_PHOTOGRAPHY_WB_MODE_CLOUDY:
white_balance = Parameters_WHITE_BALANCE_CLOUDY_DAYLIGHT;
break;
case GST_PHOTOGRAPHY_WB_MODE_SUNSET:
white_balance = Parameters_WHITE_BALANCE_TWILIGHT;
break;
case GST_PHOTOGRAPHY_WB_MODE_TUNGSTEN:
white_balance = Parameters_WHITE_BALANCE_INCANDESCENT;
break;
case GST_PHOTOGRAPHY_WB_MODE_FLUORESCENT:
white_balance = Parameters_WHITE_BALANCE_FLUORESCENT;
break;
case GST_PHOTOGRAPHY_WB_MODE_WARM_FLUORESCENT:
white_balance = Parameters_WHITE_BALANCE_WARM_FLUORESCENT;
break;
case GST_PHOTOGRAPHY_WB_MODE_SHADE:
white_balance = Parameters_WHITE_BALANCE_SHADE;
break;
default:
white_balance = NULL;
break;
}
if (white_balance) {
gst_ahc_parameters_set_white_balance (params, white_balance);
ret = gst_ah_camera_set_parameters (self->camera, params);
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_set_colour_tone_mode (GstPhotography * photo,
GstColourToneMode tone_mode)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
const gchar *color_effect = NULL;
switch (tone_mode) {
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_NORMAL:
color_effect = Parameters_EFFECT_NONE;
break;
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_SEPIA:
color_effect = Parameters_EFFECT_SEPIA;
break;
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_NEGATIVE:
color_effect = Parameters_EFFECT_NEGATIVE;
break;
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_GRAYSCALE:
color_effect = Parameters_EFFECT_MONO;
break;
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_SOLARIZE:
color_effect = Parameters_EFFECT_SOLARIZE;
break;
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_POSTERIZE:
color_effect = Parameters_EFFECT_POSTERIZE;
break;
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_WHITEBOARD:
color_effect = Parameters_EFFECT_WHITEBOARD;
break;
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_BLACKBOARD:
color_effect = Parameters_EFFECT_BLACKBOARD;
break;
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_AQUA:
color_effect = Parameters_EFFECT_AQUA;
break;
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_NATURAL:
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_VIVID:
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_COLORSWAP:
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_OUT_OF_FOCUS:
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_SKY_BLUE:
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_GRASS_GREEN:
case GST_PHOTOGRAPHY_COLOUR_TONE_MODE_SKIN_WHITEN:
default:
color_effect = NULL;
break;
}
if (color_effect) {
gst_ahc_parameters_set_color_effect (params, color_effect);
ret = gst_ah_camera_set_parameters (self->camera, params);
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_set_scene_mode (GstPhotography * photo, GstSceneMode scene_mode)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
const gchar *scene = NULL;
switch (scene_mode) {
case GST_PHOTOGRAPHY_SCENE_MODE_PORTRAIT:
scene = Parameters_SCENE_MODE_PORTRAIT;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_LANDSCAPE:
scene = Parameters_SCENE_MODE_LANDSCAPE;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_SPORT:
scene = Parameters_SCENE_MODE_SPORTS;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_NIGHT:
scene = Parameters_SCENE_MODE_NIGHT;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_AUTO:
scene = Parameters_SCENE_MODE_AUTO;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_ACTION:
scene = Parameters_SCENE_MODE_ACTION;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_NIGHT_PORTRAIT:
scene = Parameters_SCENE_MODE_NIGHT_PORTRAIT;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_THEATRE:
scene = Parameters_SCENE_MODE_THEATRE;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_BEACH:
scene = Parameters_SCENE_MODE_BEACH;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_SNOW:
scene = Parameters_SCENE_MODE_SNOW;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_SUNSET:
scene = Parameters_SCENE_MODE_SUNSET;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_STEADY_PHOTO:
scene = Parameters_SCENE_MODE_STEADYPHOTO;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_FIREWORKS:
scene = Parameters_SCENE_MODE_FIREWORKS;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_PARTY:
scene = Parameters_SCENE_MODE_PARTY;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_CANDLELIGHT:
scene = Parameters_SCENE_MODE_CANDLELIGHT;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_BARCODE:
scene = Parameters_SCENE_MODE_BARCODE;
break;
case GST_PHOTOGRAPHY_SCENE_MODE_MANUAL:
case GST_PHOTOGRAPHY_SCENE_MODE_CLOSEUP:
default:
scene = NULL;
break;
}
if (scene) {
gst_ahc_parameters_set_scene_mode (params, scene);
ret = gst_ah_camera_set_parameters (self->camera, params);
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_set_flash_mode (GstPhotography * photo, GstFlashMode flash_mode)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
const gchar *flash = NULL;
switch (flash_mode) {
case GST_PHOTOGRAPHY_FLASH_MODE_AUTO:
flash = Parameters_FLASH_MODE_AUTO;
break;
case GST_PHOTOGRAPHY_FLASH_MODE_OFF:
flash = Parameters_FLASH_MODE_OFF;
break;
case GST_PHOTOGRAPHY_FLASH_MODE_ON:
flash = Parameters_FLASH_MODE_ON;
break;
case GST_PHOTOGRAPHY_FLASH_MODE_FILL_IN:
flash = Parameters_FLASH_MODE_TORCH;
break;
case GST_PHOTOGRAPHY_FLASH_MODE_RED_EYE:
flash = Parameters_FLASH_MODE_RED_EYE;
break;
default:
flash = NULL;
break;
}
if (flash) {
gst_ahc_parameters_set_flash_mode (params, flash);
ret = gst_ah_camera_set_parameters (self->camera, params);
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_set_zoom (GstPhotography * photo, gfloat zoom)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
GList *zoom_ratios = gst_ahc_parameters_get_zoom_ratios (params);
gint max_zoom = gst_ahc_parameters_get_max_zoom (params);
gint zoom_idx = -1;
if (zoom_ratios && g_list_length (zoom_ratios) == (max_zoom + 1)) {
gint i;
gint value = zoom * 100;
for (i = 0; i < max_zoom + 1; i++) {
gint zoom_value = GPOINTER_TO_INT (g_list_nth_data (zoom_ratios, i));
if (value == zoom_value)
zoom_idx = i;
}
}
if (zoom_idx != -1) {
if (self->smooth_zoom &&
gst_ahc_parameters_is_smooth_zoom_supported (params)) {
// First, we need to cancel any previous smooth zoom operation
gst_ah_camera_stop_smooth_zoom (self->camera);
ret = gst_ah_camera_start_smooth_zoom (self->camera, zoom_idx);
} else {
gst_ahc_parameters_set_zoom (params, zoom_idx);
ret = gst_ah_camera_set_parameters (self->camera, params);
}
}
gst_ahc_parameters_zoom_ratios_free (zoom_ratios);
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_set_flicker_mode (GstPhotography * photo,
GstFlickerReductionMode flicker_mode)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
const gchar *antibanding = NULL;
switch (flicker_mode) {
case GST_PHOTOGRAPHY_FLICKER_REDUCTION_OFF:
antibanding = Parameters_ANTIBANDING_OFF;
break;
case GST_PHOTOGRAPHY_FLICKER_REDUCTION_50HZ:
antibanding = Parameters_ANTIBANDING_50HZ;
break;
case GST_PHOTOGRAPHY_FLICKER_REDUCTION_60HZ:
antibanding = Parameters_ANTIBANDING_60HZ;
break;
case GST_PHOTOGRAPHY_FLICKER_REDUCTION_AUTO:
antibanding = Parameters_ANTIBANDING_AUTO;
break;
default:
antibanding = NULL;
break;
}
if (antibanding) {
gst_ahc_parameters_set_antibanding (params, antibanding);
ret = gst_ah_camera_set_parameters (self->camera, params);
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static gboolean
gst_ahc_src_set_focus_mode (GstPhotography * photo, GstFocusMode focus_mode)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
gboolean ret = FALSE;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
const gchar *focus = NULL;
switch (focus_mode) {
case GST_PHOTOGRAPHY_FOCUS_MODE_AUTO:
focus = Parameters_FOCUS_MODE_AUTO;
break;
case GST_PHOTOGRAPHY_FOCUS_MODE_MACRO:
focus = Parameters_FOCUS_MODE_MACRO;
break;
case GST_PHOTOGRAPHY_FOCUS_MODE_INFINITY:
focus = Parameters_FOCUS_MODE_INFINITY;
break;
case GST_PHOTOGRAPHY_FOCUS_MODE_HYPERFOCAL:
focus = Parameters_FOCUS_MODE_FIXED;
break;
case GST_PHOTOGRAPHY_FOCUS_MODE_CONTINUOUS_NORMAL:
focus = Parameters_FOCUS_MODE_CONTINUOUS_PICTURE;
break;
case GST_PHOTOGRAPHY_FOCUS_MODE_CONTINUOUS_EXTENDED:
focus = Parameters_FOCUS_MODE_CONTINUOUS_VIDEO;
break;
case GST_PHOTOGRAPHY_FOCUS_MODE_EXTENDED:
focus = Parameters_FOCUS_MODE_EDOF;
break;
case GST_PHOTOGRAPHY_FOCUS_MODE_PORTRAIT:
default:
focus = NULL;
break;
}
if (focus) {
gst_ahc_parameters_set_focus_mode (params, focus);
ret = gst_ah_camera_set_parameters (self->camera, params);
}
gst_ahc_parameters_free (params);
}
}
return ret;
}
static GstPhotoCaps
gst_ahc_src_get_capabilities (GstPhotography * photo)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
GstPhotoCaps caps = GST_PHOTOGRAPHY_CAPS_EV_COMP |
GST_PHOTOGRAPHY_CAPS_WB_MODE | GST_PHOTOGRAPHY_CAPS_TONE |
GST_PHOTOGRAPHY_CAPS_SCENE | GST_PHOTOGRAPHY_CAPS_FLASH |
GST_PHOTOGRAPHY_CAPS_FOCUS | GST_PHOTOGRAPHY_CAPS_ZOOM;
if (self->camera) {
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (!gst_ahc_parameters_is_zoom_supported (params))
caps &= ~GST_PHOTOGRAPHY_CAPS_ZOOM;
gst_ahc_parameters_free (params);
}
return caps;
}
static void
gst_ahc_src_on_auto_focus (gboolean success, gpointer user_data)
{
GstAHCSrc *self = GST_AHC_SRC (user_data);
GST_WARNING_OBJECT (self, "Auto focus completed : %d", success);
gst_element_post_message (GST_ELEMENT (self),
gst_message_new_custom (GST_MESSAGE_ELEMENT, GST_OBJECT (self),
gst_structure_new (GST_PHOTOGRAPHY_AUTOFOCUS_DONE, NULL)));
}
static void
gst_ahc_src_set_autofocus (GstPhotography * photo, gboolean on)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
if (self->camera) {
if (on)
gst_ah_camera_auto_focus (self->camera, gst_ahc_src_on_auto_focus, self);
else
gst_ah_camera_cancel_auto_focus (self->camera);
}
}
static void
gst_ahc_src_photography_interface_init (GstPhotographyInterface * iface)
{
iface->get_ev_compensation = gst_ahc_src_get_ev_compensation;
iface->get_white_balance_mode = gst_ahc_src_get_white_balance_mode;
iface->get_colour_tone_mode = gst_ahc_src_get_colour_tone_mode;
iface->get_scene_mode = gst_ahc_src_get_scene_mode;
iface->get_flash_mode = gst_ahc_src_get_flash_mode;
iface->get_zoom = gst_ahc_src_get_zoom;
iface->get_flicker_mode = gst_ahc_src_get_flicker_mode;
iface->get_focus_mode = gst_ahc_src_get_focus_mode;
iface->set_ev_compensation = gst_ahc_src_set_ev_compensation;
iface->set_white_balance_mode = gst_ahc_src_set_white_balance_mode;
iface->set_colour_tone_mode = gst_ahc_src_set_colour_tone_mode;
iface->set_scene_mode = gst_ahc_src_set_scene_mode;
iface->set_flash_mode = gst_ahc_src_set_flash_mode;
iface->set_zoom = gst_ahc_src_set_zoom;
iface->set_flicker_mode = gst_ahc_src_set_flicker_mode;
iface->set_focus_mode = gst_ahc_src_set_focus_mode;
iface->get_capabilities = gst_ahc_src_get_capabilities;
iface->set_autofocus = gst_ahc_src_set_autofocus;
}
static gint
_compare_formats (int f1, int f2)
{
if (f1 == f2)
return 0;
/* YV12 has priority */
if (f1 == ImageFormat_YV12)
return -1;
if (f2 == ImageFormat_YV12)
return 1;
/* Then NV21 */
if (f1 == ImageFormat_NV21)
return -1;
if (f2 == ImageFormat_NV21)
return 1;
/* Then we don't care */
return f2 - f1;
}
static gint
_compare_sizes (GstAHCSize * s1, GstAHCSize * s2)
{
return ((s2->width * s2->height) - (s1->width * s1->height));
}
static gint
_compare_ranges (int *r1, int *r2)
{
if (r1[1] == r2[1])
/* Smallest range */
return (r1[1] - r1[0]) - (r2[1] - r2[0]);
else
/* Highest fps */
return r2[1] - r1[1];
}
static GstCaps *
gst_ahc_src_getcaps (GstBaseSrc * src)
{
GstAHCSrc *self = GST_AHC_SRC (src);
if (self->camera) {
GstCaps *ret = gst_caps_new_empty ();
GstAHCParameters *params;
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
GList *formats, *sizes, *ranges;
GList *i, *j, *k;
int previous_format = ImageFormat_UNKNOWN;
formats = gst_ahc_parameters_get_supported_preview_formats (params);
formats = g_list_sort (formats, (GCompareFunc) _compare_formats);
sizes = gst_ahc_parameters_get_supported_preview_sizes (params);
sizes = g_list_sort (sizes, (GCompareFunc) _compare_sizes);
ranges = gst_ahc_parameters_get_supported_preview_fps_range (params);
ranges = g_list_sort (ranges, (GCompareFunc) _compare_ranges);
GST_DEBUG_OBJECT (self, "Supported preview formats:");
for (i = formats; i; i = i->next) {
int f = GPOINTER_TO_INT (i->data);
GstStructure *format = NULL;
/* Ignore duplicates */
if (f == previous_format)
continue;
/* Can't use switch/case because the values are not constants */
if (f == ImageFormat_NV16) {
GST_DEBUG_OBJECT (self, " NV16 (%d)", f);
format = gst_structure_new ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('N', 'V', '1', '6'),
NULL);
} else if (f == ImageFormat_NV21) {
GST_DEBUG_OBJECT (self, " NV21 (%d)", f);
format = gst_structure_new ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('N', 'V', '2', '1'),
NULL);
} else if (f == ImageFormat_RGB_565) {
GST_DEBUG_OBJECT (self, " RGB565 (%d)", f);
format = gst_structure_new ("video/x-raw-rgb",
"bpp", G_TYPE_INT, 16,
"depth", G_TYPE_INT, 16,
"red_mask", G_TYPE_INT, 0xf800,
"green_mask", G_TYPE_INT, 0x07e0,
"blue_mask", G_TYPE_INT, 0x001f,
"endianness", G_TYPE_INT, G_LITTLE_ENDIAN, NULL);
} else if (f == ImageFormat_YUY2) {
GST_DEBUG_OBJECT (self, " YUY2 (%d)", f);
format = gst_structure_new ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'),
NULL);
} else if (f == ImageFormat_YV12) {
GST_DEBUG_OBJECT (self, " YV12 (%d)", f);
format = gst_structure_new ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('Y', 'V', '1', '2'),
NULL);
}
previous_format = f;
if (format) {
for (j = sizes; j; j = j->next) {
GstAHCSize *s = j->data;
GstStructure *size;
size = gst_structure_copy (format);
gst_structure_set (size, "width", G_TYPE_INT, s->width,
"height", G_TYPE_INT, s->height,
"interlaced", G_TYPE_BOOLEAN, FALSE,
"pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1, NULL);
for (k = ranges; k; k = k->next) {
int *range = k->data;
GstStructure *s;
s = gst_structure_copy (size);
if (range[0] == range[1]) {
gst_structure_set (s, "framerate", GST_TYPE_FRACTION,
range[0], 1000, NULL);
} else {
gst_structure_set (s, "framerate", GST_TYPE_FRACTION_RANGE,
range[0], 1000, range[1], 1000, NULL);
}
gst_caps_append_structure (ret, s);
}
gst_structure_free (size);
}
gst_structure_free (format);
}
}
GST_DEBUG_OBJECT (self, "Supported preview sizes:");
for (i = sizes; i; i = i->next) {
GstAHCSize *s = i->data;
GST_DEBUG_OBJECT (self, " %dx%d", s->width, s->height);
}
GST_DEBUG_OBJECT (self, "Supported preview fps range:");
for (i = ranges; i; i = i->next) {
int *range = i->data;
GST_DEBUG_OBJECT (self, " [%d, %d]", range[0], range[1]);
}
gst_ahc_parameters_supported_preview_formats_free (formats);
gst_ahc_parameters_supported_preview_sizes_free (sizes);
gst_ahc_parameters_supported_preview_fps_range_free (ranges);
gst_ahc_parameters_free (params);
}
return ret;
} else {
return NULL;
}
}
static void
gst_ahc_src_fixate (GstBaseSrc * src, GstCaps * caps)
{
GstAHCSrc *self = GST_AHC_SRC (src);
GstStructure *s = gst_caps_get_structure (caps, 0);
GST_DEBUG_OBJECT (self, "Fixating : %" GST_PTR_FORMAT, caps);
/* Width/height will be fixed already here, format will
* be left for fixation by the default handler.
* We only have to fixate framerate here, to the
* highest possible framerate.
*/
gst_structure_fixate_field_nearest_fraction (s, "framerate", G_MAXINT, 1);
}
static gboolean
gst_ahc_src_setcaps (GstBaseSrc * src, GstCaps * caps)
{
GstAHCSrc *self = GST_AHC_SRC (src);
gboolean ret = FALSE;
GstAHCParameters *params = NULL;
if (!self->camera) {
GST_WARNING_OBJECT (self, "setcaps called without a camera available");
goto end;
}
params = gst_ah_camera_get_parameters (self->camera);
if (params) {
GstVideoFormat format;
gint fmt;
gint width, height, fps_n, fps_d, buffer_size;
GList *ranges, *l;
gint range_size = G_MAXINT;
if (!gst_video_format_parse_caps (caps, &format, &width, &height) ||
!gst_video_parse_caps_framerate (caps, &fps_n, &fps_d)) {
GST_WARNING_OBJECT (self, "unable to parse video caps");
goto end;
}
fps_n *= 1000 / fps_d;
/* Select the best range that contains our framerate.
* We *must* set a range of those returned by the camera
* according to the API docs and can't use a subset of any
* of those ranges.
* We chose the smallest range that contains the target
* framerate.
*/
self->fps_max = self->fps_min = 0;
ranges = gst_ahc_parameters_get_supported_preview_fps_range (params);
ranges = g_list_sort (ranges, (GCompareFunc) _compare_ranges);
for (l = ranges; l; l = l->next) {
int *range = l->data;
if (fps_n >= range[0] && fps_n <= range[1] &&
range_size > (range[1] - range[0])) {
self->fps_min = range[0];
self->fps_max = range[1];
range_size = range[1] - range[0];
}
}
gst_ahc_parameters_supported_preview_fps_range_free (ranges);
if (self->fps_max == 0) {
GST_ERROR_OBJECT (self, "Couldn't find an applicable FPS range");
goto end;
}
switch (format) {
case GST_VIDEO_FORMAT_YV12:
fmt = ImageFormat_YV12;
break;
case GST_VIDEO_FORMAT_NV21:
fmt = ImageFormat_NV21;
break;
case GST_VIDEO_FORMAT_YUY2:
fmt = ImageFormat_YUY2;
break;
case GST_VIDEO_FORMAT_RGB16:
fmt = ImageFormat_RGB_565;
break;
/* GST_VIDEO_FORMAT_NV16 doesn't exist */
//case GST_VIDEO_FORMAT_NV16:
//fmt = ImageFormat_NV16;
//break;
default:
fmt = ImageFormat_UNKNOWN;
break;
}
if (fmt == ImageFormat_UNKNOWN) {
GST_WARNING_OBJECT (self, "unsupported video format");
goto end;
}
gst_ahc_parameters_set_preview_size (params, width, height);
gst_ahc_parameters_set_preview_format (params, fmt);
gst_ahc_parameters_set_preview_fps_range (params, self->fps_min,
self->fps_max);
GST_DEBUG_OBJECT (self, "Setting camera parameters : %d %dx%d @ [%f, %f]",
fmt, width, height, self->fps_min / 1000.0, self->fps_max / 1000.0);
if (!gst_ah_camera_set_parameters (self->camera, params)) {
GST_WARNING_OBJECT (self, "Unable to set video parameters");
goto end;
}
self->width = width;
self->height = height;
self->format = fmt;
buffer_size = width * height *
((double) gst_ag_imageformat_get_bits_per_pixel (fmt) / 8);
if (buffer_size > self->buffer_size) {
JNIEnv *env = gst_dvm_get_env ();
gint i;
for (i = 0; i < NUM_CALLBACK_BUFFERS; i++) {
jbyteArray array = (*env)->NewByteArray (env, buffer_size);
if (array) {
gst_ah_camera_add_callback_buffer (self->camera, array);
(*env)->DeleteLocalRef (env, array);
}
}
}
self->buffer_size = buffer_size;
ret = TRUE;
}
end:
if (params)
gst_ahc_parameters_free (params);
if (ret && self->start) {
GST_DEBUG_OBJECT (self, "Starting preview");
ret = gst_ah_camera_start_preview (self->camera);
if (ret) {
/* Need to reset callbacks after every startPreview */
gst_ah_camera_set_preview_callback_with_buffer (self->camera,
gst_ahc_src_on_preview_frame, self);
gst_ah_camera_set_error_callback (self->camera, gst_ahc_src_on_error,
self);
self->start = FALSE;
}
}
return ret;
}
typedef struct
{
GstAHCSrc *self;
jbyteArray array;
jbyte *data;
} FreeFuncBuffer;
static void
gst_ahc_src_buffer_free_func (gpointer priv)
{
FreeFuncBuffer *data = (FreeFuncBuffer *) priv;
GstAHCSrc *self = data->self;
JNIEnv *env = gst_dvm_get_env ();
(*env)->ReleaseByteArrayElements (env, data->array, data->data, JNI_ABORT);
if (self->camera)
gst_ah_camera_add_callback_buffer (self->camera, data->array);
(*env)->DeleteGlobalRef (env, data->array);
gst_object_unref (self);
g_slice_free (FreeFuncBuffer, data);
}
static void
_data_queue_item_free (GstDataQueueItem * item)
{
gst_buffer_unref (GST_BUFFER (item->object));
g_slice_free (GstDataQueueItem, item);
}
static void
gst_ahc_src_on_preview_frame (jbyteArray array, gpointer user_data)
{
GstAHCSrc *self = GST_AHC_SRC (user_data);
JNIEnv *env = gst_dvm_get_env ();
GstBuffer *buffer;
GstDataQueueItem *item = NULL;
FreeFuncBuffer *malloc_data = NULL;
GstClockTime timestamp = GST_CLOCK_TIME_NONE;
GstClockTime duration = 0;
GstClock *clock;
if (array == NULL) {
GST_DEBUG_OBJECT (self, "Size of array in queue is too small, dropping it");
return;
}
if ((clock = GST_ELEMENT_CLOCK (self))) {
GstClockTime base_time = GST_ELEMENT_CAST (self)->base_time;
GstClockTime current_ts;
gst_object_ref (clock);
current_ts = gst_clock_get_time (clock) - base_time;
gst_object_unref (clock);
if (GST_CLOCK_TIME_IS_VALID (self->previous_ts)) {
timestamp = self->previous_ts;
duration = current_ts - self->previous_ts;
self->previous_ts = current_ts;
} else {
/* Drop the first buffer */
self->previous_ts = current_ts;
gst_ah_camera_add_callback_buffer (self->camera, array);
return;
}
} else {
gst_ah_camera_add_callback_buffer (self->camera, array);
return;
}
//GST_WARNING_OBJECT (self, "Received data buffer %p", data);
malloc_data = g_slice_new0 (FreeFuncBuffer);
malloc_data->self = gst_object_ref (self);
malloc_data->array = (*env)->NewGlobalRef (env, array);
malloc_data->data = (*env)->GetByteArrayElements (env, array, NULL);
buffer = gst_buffer_new ();
GST_BUFFER_DATA (buffer) = (guint8 *) malloc_data->data;
GST_BUFFER_SIZE (buffer) = self->buffer_size;
GST_BUFFER_MALLOCDATA (buffer) = (gpointer) malloc_data;
GST_BUFFER_FREE_FUNC (buffer) = gst_ahc_src_buffer_free_func;
GST_BUFFER_DURATION (buffer) = duration;
GST_BUFFER_TIMESTAMP (buffer) = timestamp;
item = g_slice_new0 (GstDataQueueItem);
item->object = GST_MINI_OBJECT (buffer);
item->size = GST_BUFFER_SIZE (buffer);
item->duration = GST_BUFFER_DURATION (buffer);
item->visible = TRUE;
item->destroy = (GDestroyNotify) _data_queue_item_free;
if (!gst_data_queue_push (self->queue, item)) {
/* Can't add buffer to queue. Must be flushing. */
_data_queue_item_free (item);
}
}
static void
gst_ahc_src_on_error (gint error, gpointer user_data)
{
GstAHCSrc *self = GST_AHC_SRC (user_data);
GST_WARNING_OBJECT (self, "Received error code : %d", error);
}
static gboolean
gst_ahc_src_open (GstAHCSrc * self)
{
GST_DEBUG_OBJECT (self, "Openning camera");
self->camera = gst_ah_camera_open (self->device);
if (self->camera) {
GST_DEBUG_OBJECT (self, "Opened camera");
self->texture = gst_ag_surfacetexture_new (0);
gst_ah_camera_set_preview_texture (self->camera, self->texture);
self->buffer_size = 0;
} else {
gint num_cams = gst_ah_camera_get_number_of_cameras ();
if (num_cams > 0 && self->device < num_cams) {
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
("Unable to open device '%d'.", self->device), GST_ERROR_SYSTEM);
} else if (num_cams > 0) {
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
("Device '%d' does not exist.", self->device), GST_ERROR_SYSTEM);
} else {
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
("There are no cameras available on this device."), GST_ERROR_SYSTEM);
}
}
return (self->camera != NULL);
}
static void
gst_ahc_src_close (GstAHCSrc * self)
{
if (self->camera) {
gst_ah_camera_set_error_callback (self->camera, NULL, NULL);
gst_ah_camera_set_preview_callback_with_buffer (self->camera, NULL, NULL);
gst_ah_camera_release (self->camera);
}
self->camera = NULL;
if (self->texture)
gst_ag_surfacetexture_release (self->texture);
self->texture = NULL;
}
static GstStateChangeReturn
gst_ahc_src_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstAHCSrc *self = GST_AHC_SRC (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_ahc_src_open (self))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
gst_ahc_src_close (self);
break;
default:
break;
}
return ret;
}
static gboolean
gst_ahc_src_start (GstBaseSrc * bsrc)
{
GstAHCSrc *self = GST_AHC_SRC (bsrc);
GST_DEBUG_OBJECT (self, "Starting preview");
if (self->camera) {
self->previous_ts = GST_CLOCK_TIME_NONE;
self->fps_min = self->fps_max = self->width = self->height = 0;
self->format = ImageFormat_UNKNOWN;
self->start = TRUE;
return TRUE;
} else {
return FALSE;
}
}
static gboolean
gst_ahc_src_stop (GstBaseSrc * bsrc)
{
GstAHCSrc *self = GST_AHC_SRC (bsrc);
GST_DEBUG_OBJECT (self, "Stopping preview");
if (self->camera) {
gst_data_queue_flush (self->queue);
self->start = FALSE;
gst_ah_camera_set_error_callback (self->camera, NULL, NULL);
return gst_ah_camera_stop_preview (self->camera);
}
return TRUE;
}
static gboolean
gst_ahc_src_unlock (GstBaseSrc * bsrc)
{
GstAHCSrc *self = GST_AHC_SRC (bsrc);
GST_DEBUG_OBJECT (self, "Unlocking create");
gst_data_queue_set_flushing (self->queue, TRUE);
return TRUE;
}
static gboolean
gst_ahc_src_unlock_stop (GstBaseSrc * bsrc)
{
GstAHCSrc *self = GST_AHC_SRC (bsrc);
GST_DEBUG_OBJECT (self, "Stopping unlock");
gst_data_queue_set_flushing (self->queue, FALSE);
return TRUE;
}
static GstFlowReturn
gst_ahc_src_create (GstPushSrc * src, GstBuffer ** buffer)
{
GstAHCSrc *self = GST_AHC_SRC (src);
GstDataQueueItem *item;
if (!gst_data_queue_pop (self->queue, &item))
return GST_FLOW_WRONG_STATE;
*buffer = GST_BUFFER (item->object);
g_slice_free (GstDataQueueItem, item);
return GST_FLOW_OK;
}
static gboolean
gst_ahc_src_query (GstBaseSrc * bsrc, GstQuery * query)
{
GstAHCSrc *self = GST_AHC_SRC (bsrc);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:{
GstClockTime min, max;
gst_query_parse_latency (query, NULL, &min, &max);
min = gst_util_uint64_scale (GST_SECOND, 1000, self->fps_max);
max = gst_util_uint64_scale (GST_SECOND, 1000, self->fps_min);
GST_DEBUG_OBJECT (self,
"Reporting latency min: %" GST_TIME_FORMAT " max: %" GST_TIME_FORMAT,
GST_TIME_ARGS (min), GST_TIME_ARGS (max));
gst_query_set_latency (query, TRUE, min, max);
return TRUE;
break;
}
default:
return GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
break;
}
g_assert_not_reached ();
}
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