mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-25 09:40:37 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/sys/androidmedia/gstahcsrc.c
Sebastian Dröge 5d9df5d5d0 ahcsrc: There's no point in read-only CONSTRUCT properties 
And creating one is causing assertions. Also get rid of the other CONSTRUCT
property as it's a) unneeded for default initialization and b) you're not
supposed to use constructor properties when creating element instances and the
GStreamer API doesn't provide direct ways for doing so.

https://bugzilla.gnome.org/show_bug.cgi?id=764339
2016-03-30 10:35:53 +03:00

2348 lines
72 KiB
C
Raw Blame History

/* 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
#include <gst/video/video.h>
#include <gst/interfaces/photography.h>
#include "gstjniutils.h"
#include "gstahcsrc.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, GstCaps * filter);
static gboolean gst_ahc_src_setcaps (GstBaseSrc * src, GstCaps * caps);
static GstCaps *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);
/* GstPhotography */
static void gst_ahc_src_photography_init (gpointer g_iface,
gpointer iface_data);
static gboolean gst_ahc_src_get_ev_compensation (GstPhotography * photo,
gfloat * ev_comp);
static gboolean _white_balance_to_enum (const gchar * white_balance,
GstPhotographyWhiteBalanceMode * mode);
static gboolean gst_ahc_src_get_white_balance_mode (GstPhotography * photo,
GstPhotographyWhiteBalanceMode * wb_mode);
static gboolean _color_effects_to_enum (const gchar * color_effect,
GstPhotographyColorToneMode * mode);
static gboolean gst_ahc_src_get_colour_tone_mode (GstPhotography * photo,
GstPhotographyColorToneMode * tone_mode);
static gboolean _scene_modes_to_enum (const gchar * scene,
GstPhotographySceneMode * mode);
static gboolean gst_ahc_src_get_scene_mode (GstPhotography * photo,
GstPhotographySceneMode * scene_mode);
static gboolean _flash_modes_to_enum (const gchar * flash,
GstPhotographyFlashMode * mode);
static gboolean gst_ahc_src_get_flash_mode (GstPhotography * photo,
GstPhotographyFlashMode * flash_mode);
static gboolean gst_ahc_src_get_zoom (GstPhotography * photo, gfloat * zoom);
static gboolean _antibanding_to_enum (const gchar * antibanding,
GstPhotographyFlickerReductionMode * mode);
static gboolean gst_ahc_src_get_flicker_mode (GstPhotography * photo,
GstPhotographyFlickerReductionMode * flicker_mode);
static gboolean _focus_modes_to_enum (const gchar * focus,
GstPhotographyFocusMode * mode);
static gboolean gst_ahc_src_get_focus_mode (GstPhotography * photo,
GstPhotographyFocusMode * 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,
GstPhotographyWhiteBalanceMode wb_mode);
static gboolean gst_ahc_src_set_colour_tone_mode (GstPhotography * photo,
GstPhotographyColorToneMode tone_mode);
static gboolean gst_ahc_src_set_scene_mode (GstPhotography * photo,
GstPhotographySceneMode scene_mode);
static gboolean gst_ahc_src_set_flash_mode (GstPhotography * photo,
GstPhotographyFlashMode flash_mode);
static gboolean gst_ahc_src_set_zoom (GstPhotography * photo, gfloat zoom);
static gboolean gst_ahc_src_set_flicker_mode (GstPhotography * photo,
GstPhotographyFlickerReductionMode flicker_mode);
static gboolean gst_ahc_src_set_focus_mode (GstPhotography * photo,
GstPhotographyFocusMode focus_mode);
static GstPhotographyCaps 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_MAKE_WITH_FEATURES("ANY", " { YV12, YUY2, NV21, NV16, RGB16 }")
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
#define parent_class gst_ahc_src_parent_class
enum
{
PROP_0,
PROP_DEVICE,
PROP_DEVICE_NAME,
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_MODE,
PROP_IMAGE_CAPTURE_SUPPORTED_CAPS,
PROP_IMAGE_PREVIEW_SUPPORTED_CAPS,
PROP_FLICKER_MODE,
PROP_FOCUS_MODE,
PROP_ZOOM,
PROP_SMOOTH_ZOOM,
PROP_WHITE_POINT,
PROP_MIN_EXPOSURE_TIME,
PROP_MAX_EXPOSURE_TIME,
PROP_LENS_FOCUS,
PROP_EXPOSURE_TIME,
PROP_COLOR_TEMPERATURE,
PROP_ANALOG_GAIN,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
#define DEFAULT_DEVICE "0"
G_DEFINE_TYPE_WITH_CODE (GstAHCSrc, gst_ahc_src, GST_TYPE_PUSH_SRC,
G_IMPLEMENT_INTERFACE (GST_TYPE_PHOTOGRAPHY, gst_ahc_src_photography_init));
#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_photography_init (gpointer g_iface, gpointer iface_data)
{
GstPhotographyInterface *iface = g_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_color_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_color_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 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;
gst_element_class_add_static_pad_template (element_class,
&gst_ahc_src_pad_template);
/**
* 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_STATIC_STRINGS);
g_object_class_install_property (gobject_class, PROP_DEVICE,
properties[PROP_DEVICE]);
/**
* GstAHCSrc:device-name:
*
* A user-friendly name for the camera device
*/
properties[PROP_DEVICE_NAME] = g_param_spec_string ("device-name",
"Device name", "Device name", NULL,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
properties[PROP_DEVICE_NAME]);
/**
* 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_COLOR_TONE);
properties[PROP_COLOUR_TONE] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_COLOR_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);
#if 0
g_object_class_override_property (gobject_class, PROP_EXPOSURE_MODE,
GST_PHOTOGRAPHY_PROP_EXPOSURE_MODE);
properties[PROP_EXPOSURE] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_EXPOSURE_MODE);
#endif
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);
g_object_class_override_property (gobject_class, PROP_WHITE_POINT,
GST_PHOTOGRAPHY_PROP_WHITE_POINT);
properties[PROP_WHITE_POINT] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_WHITE_POINT);
g_object_class_override_property (gobject_class, PROP_MIN_EXPOSURE_TIME,
GST_PHOTOGRAPHY_PROP_MIN_EXPOSURE_TIME);
properties[PROP_MIN_EXPOSURE_TIME] =
g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_MIN_EXPOSURE_TIME);
g_object_class_override_property (gobject_class, PROP_MAX_EXPOSURE_TIME,
GST_PHOTOGRAPHY_PROP_MAX_EXPOSURE_TIME);
properties[PROP_MAX_EXPOSURE_TIME] =
g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_MAX_EXPOSURE_TIME);
g_object_class_override_property (gobject_class, PROP_LENS_FOCUS,
GST_PHOTOGRAPHY_PROP_LENS_FOCUS);
properties[PROP_LENS_FOCUS] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_LENS_FOCUS);
g_object_class_override_property (gobject_class, PROP_EXPOSURE_TIME,
GST_PHOTOGRAPHY_PROP_EXPOSURE_TIME);
properties[PROP_EXPOSURE_TIME] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_EXPOSURE_TIME);
g_object_class_override_property (gobject_class, PROP_COLOR_TEMPERATURE,
GST_PHOTOGRAPHY_PROP_COLOR_TEMPERATURE);
properties[PROP_COLOR_TEMPERATURE] =
g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_COLOR_TEMPERATURE);
g_object_class_override_property (gobject_class, PROP_ANALOG_GAIN,
GST_PHOTOGRAPHY_PROP_ANALOG_GAIN);
properties[PROP_ANALOG_GAIN] = g_object_class_find_property (gobject_class,
GST_PHOTOGRAPHY_PROP_ANALOG_GAIN);
gst_element_class_set_static_metadata (element_class,
"Android Camera Source",
"Source/Video",
"Reads frames from android.hardware.Camera class into buffers",
"Youness Alaoui <youness.alaoui@collabora.co.uk>");
GST_DEBUG_CATEGORY_INIT (gst_ahc_src_debug, "ahcsrc", 0,
"android.hardware.Camera source element");
}
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)
{
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, NULL, NULL);
self->start = FALSE;
self->previous_ts = GST_CLOCK_TIME_NONE;
g_mutex_init (&self->mutex);
}
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_mutex_clear (&self->mutex);
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);
GST_DEBUG_OBJECT (self, "set props %d", prop_id);
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:{
GstPhotographyWhiteBalanceMode wb = g_value_get_enum (value);
gst_ahc_src_set_white_balance_mode (GST_PHOTOGRAPHY (self), wb);
}
break;
case PROP_COLOUR_TONE:{
GstPhotographyColorToneMode tone = g_value_get_enum (value);
gst_ahc_src_set_colour_tone_mode (GST_PHOTOGRAPHY (self), tone);
}
break;
case PROP_SCENE_MODE:{
GstPhotographySceneMode scene = g_value_get_enum (value);
gst_ahc_src_set_scene_mode (GST_PHOTOGRAPHY (self), scene);
}
break;
case PROP_FLASH_MODE:{
GstPhotographyFlashMode 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:{
GstPhotographyFlickerReductionMode flicker = g_value_get_enum (value);
gst_ahc_src_set_flicker_mode (GST_PHOTOGRAPHY (self), flicker);
}
break;
case PROP_FOCUS_MODE:{
GstPhotographyFocusMode 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_MODE:
case PROP_IMAGE_CAPTURE_SUPPORTED_CAPS:
case PROP_IMAGE_PREVIEW_SUPPORTED_CAPS:
case PROP_WHITE_POINT:
case PROP_MIN_EXPOSURE_TIME:
case PROP_MAX_EXPOSURE_TIME:
case PROP_LENS_FOCUS:
case PROP_EXPOSURE_TIME:
case PROP_COLOR_TEMPERATURE:
case PROP_ANALOG_GAIN:
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_NAME:{
GstAHCCameraInfo info;
gchar *dev;
if (gst_ah_camera_get_camera_info (self->device, &info))
dev = g_strdup_printf ("#%d %s", self->device,
info.facing == CameraInfo_CAMERA_FACING_BACK ? "Back" : "Front");
else
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:{
GstPhotographyWhiteBalanceMode wb;
if (gst_ahc_src_get_white_balance_mode (GST_PHOTOGRAPHY (self), &wb))
g_value_set_enum (value, wb);
}
break;
case PROP_COLOUR_TONE:{
GstPhotographyColorToneMode tone;
if (gst_ahc_src_get_colour_tone_mode (GST_PHOTOGRAPHY (self), &tone))
g_value_set_enum (value, tone);
}
break;
case PROP_SCENE_MODE:{
GstPhotographySceneMode scene;
if (gst_ahc_src_get_scene_mode (GST_PHOTOGRAPHY (self), &scene))
g_value_set_enum (value, scene);
}
break;
case PROP_FLASH_MODE:{
GstPhotographyFlashMode flash;
if (gst_ahc_src_get_flash_mode (GST_PHOTOGRAPHY (self), &flash))
g_value_set_enum (value, flash);
}
break;
case PROP_CAPABILITIES:{
GstPhotographyCaps 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:{
GstPhotographyFlickerReductionMode flicker;
if (gst_ahc_src_get_flicker_mode (GST_PHOTOGRAPHY (self), &flicker))
g_value_set_enum (value, flicker);
}
break;
case PROP_FOCUS_MODE:{
GstPhotographyFocusMode 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_MODE:
case PROP_WHITE_POINT:
case PROP_MIN_EXPOSURE_TIME:
case PROP_MAX_EXPOSURE_TIME:
case PROP_LENS_FOCUS:
case PROP_EXPOSURE_TIME:
case PROP_COLOR_TEMPERATURE:
case PROP_ANALOG_GAIN:
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
_antibanding_to_enum (const gchar * antibanding,
GstPhotographyFlickerReductionMode * 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,
GstPhotographyWhiteBalanceMode * 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,
GstPhotographyColorToneMode * mode)
{
if (color_effect == Parameters_EFFECT_NONE)
*mode = GST_PHOTOGRAPHY_COLOR_TONE_MODE_NORMAL;
else if (color_effect == Parameters_EFFECT_MONO)
*mode = GST_PHOTOGRAPHY_COLOR_TONE_MODE_GRAYSCALE;
else if (color_effect == Parameters_EFFECT_NEGATIVE)
*mode = GST_PHOTOGRAPHY_COLOR_TONE_MODE_NEGATIVE;
else if (color_effect == Parameters_EFFECT_SOLARIZE)
*mode = GST_PHOTOGRAPHY_COLOR_TONE_MODE_SOLARIZE;
else if (color_effect == Parameters_EFFECT_SEPIA)
*mode = GST_PHOTOGRAPHY_COLOR_TONE_MODE_SEPIA;
else if (color_effect == Parameters_EFFECT_POSTERIZE)
*mode = GST_PHOTOGRAPHY_COLOR_TONE_MODE_POSTERIZE;
else if (color_effect == Parameters_EFFECT_WHITEBOARD)
*mode = GST_PHOTOGRAPHY_COLOR_TONE_MODE_WHITEBOARD;
else if (color_effect == Parameters_EFFECT_BLACKBOARD)
*mode = GST_PHOTOGRAPHY_COLOR_TONE_MODE_BLACKBOARD;
else if (color_effect == Parameters_EFFECT_AQUA)
*mode = GST_PHOTOGRAPHY_COLOR_TONE_MODE_AQUA;
else
return FALSE;
return TRUE;
}
static gboolean
_scene_modes_to_enum (const gchar * scene, GstPhotographySceneMode * 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, GstPhotographyFlashMode * 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, GstPhotographyFocusMode * 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,
GstPhotographyWhiteBalanceMode * 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);
GstPhotographyWhiteBalanceMode 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,
GstPhotographyColorToneMode * 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);
GstPhotographyColorToneMode mode = GST_PHOTOGRAPHY_COLOR_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,
GstPhotographySceneMode * 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);
GstPhotographySceneMode 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,
GstPhotographyFlashMode * 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);
GstPhotographyFlashMode 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,
GstPhotographyFlickerReductionMode * 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);
GstPhotographyFlickerReductionMode 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,
GstPhotographyFocusMode * 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);
GstPhotographyFocusMode 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,
GstPhotographyWhiteBalanceMode 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,
GstPhotographyColorToneMode 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_COLOR_TONE_MODE_NORMAL:
color_effect = Parameters_EFFECT_NONE;
break;
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_SEPIA:
color_effect = Parameters_EFFECT_SEPIA;
break;
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_NEGATIVE:
color_effect = Parameters_EFFECT_NEGATIVE;
break;
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_GRAYSCALE:
color_effect = Parameters_EFFECT_MONO;
break;
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_SOLARIZE:
color_effect = Parameters_EFFECT_SOLARIZE;
break;
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_POSTERIZE:
color_effect = Parameters_EFFECT_POSTERIZE;
break;
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_WHITEBOARD:
color_effect = Parameters_EFFECT_WHITEBOARD;
break;
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_BLACKBOARD:
color_effect = Parameters_EFFECT_BLACKBOARD;
break;
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_AQUA:
color_effect = Parameters_EFFECT_AQUA;
break;
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_NATURAL:
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_VIVID:
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_COLORSWAP:
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_OUT_OF_FOCUS:
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_SKY_BLUE:
case GST_PHOTOGRAPHY_COLOR_TONE_MODE_GRASS_GREEN:
case GST_PHOTOGRAPHY_COLOR_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,
GstPhotographySceneMode 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,
GstPhotographyFlashMode 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,
GstPhotographyFlickerReductionMode 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,
GstPhotographyFocusMode 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 GstPhotographyCaps
gst_ahc_src_get_capabilities (GstPhotography * photo)
{
GstAHCSrc *self = GST_AHC_SRC (photo);
GstPhotographyCaps 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_empty (GST_PHOTOGRAPHY_AUTOFOCUS_DONE)));
}
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 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, GstCaps * filter)
{
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);
gchar *format_string = NULL;
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_string = g_strdup ("NV16");
} else if (f == ImageFormat_NV21) {
GST_DEBUG_OBJECT (self, " NV21 (%d)", f);
format_string = g_strdup ("NV21");
} else if (f == ImageFormat_RGB_565) {
GstVideoFormat vformat;
vformat = gst_video_format_from_masks (16, 16, G_LITTLE_ENDIAN,
0xf800, 0x07e0, 0x001f, 0x0);
GST_DEBUG_OBJECT (self, " RGB565 (%d)", f);
format_string = g_strdup (gst_video_format_to_string (vformat));
} else if (f == ImageFormat_YUY2) {
GST_DEBUG_OBJECT (self, " YUY2 (%d)", f);
format_string = g_strdup ("YUY2");
} else if (f == ImageFormat_YV12) {
GST_DEBUG_OBJECT (self, " YV12 (%d)", f);
format_string = g_strdup ("YV12");
}
previous_format = f;
if (format_string) {
format = gst_structure_new ("video/x-raw",
"format", G_TYPE_STRING, format_string, NULL);
g_free (format_string);
}
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 GstCaps *
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);
caps = gst_caps_make_writable (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);
caps = GST_BASE_SRC_CLASS (parent_class)->fixate (src, caps);
return caps;
}
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) {
GstStructure *s;
const gchar *format_str = NULL;
GstVideoFormat format;
gint fmt;
gint width, height, fps_n, fps_d, buffer_size;
GList *ranges, *l;
gint range_size = G_MAXINT;
s = gst_caps_get_structure (caps, 0);
format_str = gst_structure_get_string (s, "format");
format = gst_video_format_from_string (format_str);
gst_structure_get_int (s, "width", &width);
gst_structure_get_int (s, "height", &height);
gst_structure_get_fraction (s, "framerate", &fps_n, &fps_d);
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 (%s)", format_str);
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_amc_jni_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;
GST_DEBUG_OBJECT (self, "setting buffer w:%d h:%d buffer_size: %d",
self->width, self->height, self->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_amc_jni_get_env ();
g_mutex_lock (&self->mutex);
GST_DEBUG_OBJECT (self, "release %p->%p", data, data->array);
(*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);
g_slice_free (FreeFuncBuffer, data);
g_mutex_unlock (&self->mutex);
gst_object_unref (self);
}
static void
_data_queue_item_free (GstDataQueueItem * item)
{
GST_DEBUG ("release %p", item->object);
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_amc_jni_get_env ();
GstBuffer *buffer;
GstDataQueueItem *item = NULL;
FreeFuncBuffer *malloc_data = NULL;
GstClockTime timestamp = GST_CLOCK_TIME_NONE;
GstClockTime duration = 0;
GstClock *clock;
gboolean queued = FALSE;
g_mutex_lock (&self->mutex);
if (array == NULL) {
GST_DEBUG_OBJECT (self, "Size of array in queue is too small, dropping it");
goto done;
}
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);
GST_DEBUG_OBJECT (self, "dropping the first buffer");
goto done;
}
} else {
GST_DEBUG_OBJECT (self, "element clock hasn't created yet.");
gst_ah_camera_add_callback_buffer (self->camera, array);
goto done;
}
GST_DEBUG_OBJECT (self, "Received data buffer %p", array);
malloc_data = g_slice_new (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_wrapped_full (GST_MEMORY_FLAG_READONLY, malloc_data->data,
self->buffer_size, 0, self->buffer_size, malloc_data,
gst_ahc_src_buffer_free_func);
GST_BUFFER_DURATION (buffer) = duration;
GST_BUFFER_PTS (buffer) = timestamp;
GST_DEBUG_OBJECT (self, "creating wrapped buffer (size: %d)",
self->buffer_size);
item = g_slice_new (GstDataQueueItem);
item->object = GST_MINI_OBJECT (buffer);
item->size = gst_buffer_get_size (buffer);
item->duration = GST_BUFFER_DURATION (buffer);
item->visible = TRUE;
item->destroy = (GDestroyNotify) _data_queue_item_free;
GST_DEBUG_OBJECT (self, "wrapping jni array %p->%p %p->%p", item,
item->object, malloc_data, malloc_data->array);
queued = gst_data_queue_push (self->queue, item);
done:
g_mutex_unlock (&self->mutex);
if (item && !queued) {
GST_INFO_OBJECT (self, "could not add buffer to queue");
/* 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, "Opening 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);
gst_ah_camera_free (self->camera);
}
self->camera = NULL;
if (self->texture) {
gst_ag_surfacetexture_release (self->texture);
gst_ag_surfacetexture_free (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)) {
GST_INFO_OBJECT (self, "empty queue");
return GST_FLOW_FLUSHING;
}
GST_DEBUG_OBJECT (self, "creating buffer %p->%p", item, item->object);
*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;
/* Allow of 1 frame latency base on the longer frame duration */
gst_query_parse_latency (query, NULL, &min, NULL);
min = gst_util_uint64_scale (GST_SECOND, 1000, self->fps_min);
GST_DEBUG_OBJECT (self,
"Reporting latency min: %" GST_TIME_FORMAT, GST_TIME_ARGS (min));
gst_query_set_latency (query, TRUE, min, min);
return TRUE;
break;
}
default:
return GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
break;
}
g_assert_not_reached ();
}
Reference in a new issue View git blame Copy permalink