mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-07-02 20:55:55 +00:00
Code Issues 1 Projects Releases Wiki Activity

frei0r: First version of a frei0r wrapper plugin

Browse source 
Currently this only supports frei0r filters.
This commit is contained in:
Sebastian Dröge 2009-06-12 14:59:28 +02:00
parent d45e804d5a
commit 0a684a3d04
7 changed files with 1537 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
configure.ac
View file

@ -265,6 +265,7 @@ AG_GST_CHECK_PLUGIN(dtmf)
AG_GST_CHECK_PLUGIN(dvdspu)
AG_GST_CHECK_PLUGIN(festival)
AG_GST_CHECK_PLUGIN(freeze)
AG_GST_CHECK_PLUGIN(frei0r)
AG_GST_CHECK_PLUGIN(h264parse)
AG_GST_CHECK_PLUGIN(hdvparse)
AG_GST_CHECK_PLUGIN(id3tag)
@ -1557,6 +1558,7 @@ gst/dtmf/Makefile
gst/dvdspu/Makefile
gst/festival/Makefile
gst/freeze/Makefile
gst/frei0r/Makefile
gst/h264parse/Makefile
gst/hdvparse/Makefile
gst/id3tag/Makefile

13
gst/frei0r/Makefile.am Normal file
View file

@ -0,0 +1,13 @@
plugin_LTLIBRARIES = libgstfrei0r.la
libgstfrei0r_la_SOURCES = \
gstfrei0r.c \
gstfrei0rfilter.c
libgstfrei0r_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) $(GST_PLUGINS_BASE_CFLAGS)
libgstfrei0r_la_LIBADD = $(GST_LIBS) $(GST_BASE_LIBS) $(GST_PLUGINS_BASE_LIBS) \
-lgstvideo-@GST_MAJORMINOR@
libgstfrei0r_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstfrei0r_la_LIBTOOLFLAGS = --tag=disable-static
noinst_HEADERS = gstfrei0r.h gstfrei0rfilter.h frei0r.h

567
gst/frei0r/frei0r.h Normal file
View file

@ -0,0 +1,567 @@
/** @mainpage frei0r - a minimalistic plugin API for video effects
*
* @section sec_intro Introduction
*
* This is frei0r - a minimalistic plugin API for video effects.
*
* The main emphasis is on simplicity - there are many different applications
* that use video effects, and they all have different requirements regarding
* their internal plugin API. And that's why frei0r does not try to be a
* one-in-all general video plugin API, but instead an API for the most
* common video effects: simple filters, sources and mixers that can be
* controlled by parameters.
*
* It's our hope that this way these simple effects can be shared between
* many applications, avoiding their reimplementation by different
* projects.
*
* On the other hand, this is not meant as a competing standard to
* more ambitious efforts that try to satisfy the needs of many different
* applications and more complex effects.
*
*
* @section sec_overview Overview
*
* If you are new to frei0r, the best thing is probably to have
* a look at the <a href="frei0r_8h-source.html">frei0r header</a>,
* which is quite simple.
*
* After that, you might want to look at the
* <a href="frei0r_8h.html">frei0r functions</a> in more detail.
*
* When developing a new frei0r effect, you have to choose
* - which effect type to use (\ref PLUGIN_TYPE),
* - which color model to use (\ref COLOR_MODEL), and
* - which parameter types (\ref PARAM_TYPE) your effect will support.
*
* To round things up, you should decide whether your effect should have
* an associated icon (\ref icons), and where it will be installed
* (\ref pluglocations).
*
* @section sec_changes Changes
*
* @subsection sec_changes_1_0_1_1 From frei0r 1.0 to frei0r 1.1
*
* - added specifications for plugin locations
* - added specifications for frei0r icons
* - added RGBA8888 color model
* - added packed32 color model
* - added better specification of color models
* - added string type
* - added bounds to resolution (8 <= width, height <= 2048)
* - width and height must be an integer multiple of 8
* - frame data must be 16 byte aligned
* - improved update specification (must not change parameters,
* must restore fpu state)
* - added note for applications to ignore effects with unknown fields
* - added new plugin types mixer2 and mixer3
* - added section about \ref concurrency
*/
/**
* \addtogroup pluglocations Plugin Locations
* @section sec_pluglocations Plugin Locations
*
* For Unix platforms there are rules for the location of frei0r plugins.
*
* frei0r 1.x plugin files should be located in
*
* - (1) /usr/lib/frei0r-1/\<vendor\>
* - (2) /usr/local/lib/frei0r-1/\<vendor\>
* - (3) $HOME/.frei0r-1/lib/\<vendor\>
*
* Examples:
*
* - /usr/lib/frei0r-1/mob/flippo.so
* - /usr/lib/frei0r-1/drone/flippo.so
* - /usr/local/lib/frei0r-1/gephex/coma/invert0r.so
* - /home/martin/.frei0r-1/lib/martin/test.so
*
* Like in these examples plugins should be placed in "vendor" subdirs
* to reduce name clashes.
*
* @subsection sec_order Plugin Loading Order
*
* The application shall load plugins in the following order: 3, 2, 1.
* If a name clash occurs (two or more frei0r plugins with identical
* effect name), the plugins in directory 3 have precedence over plugins
* in directory 2, and those in directory 2 have precedence over plugins
* in directory 1.
*
* This makes it possible for users to "override" effects that are
* installed in system wide directories by placing plugins in their
* home directory.
*
* The order of loading plugins inside each of the directories
* 1, 2, and 3 is not defined.
*/
/**
*\addtogroup icons Icons for frei0r effects
* @section sec_icons Icons for frei0r effects
*
* Each frei0r effect can have an associated icon.
*
* @subsection sec_icon_format Icon Format
*
* The format of frei0r icons must be png.
* Recommended resolution is 64x64.
* The icon filename of an effect with effect name "frei0r"
* must be "frei0r.png".
*
* @subsection sec_icon_location Icon location
*
* The exact location where the application should look for the
* plugin is platform dependant.
*
* For Windows platforms, the icon should be at the same place as
* the plugin containing the effect.
*
* For Unix platforms, the following mapping from plugin location
* to icon location must be used:
*
* Let \<plugin_path\>/\<plugin\> be a frei0r plugin with name \<effect_name\>.
* Then the corresponding icon (if any) shall be located in
* \<icon_path\>/\<effect_name\>.png.
* \<icon_path\> can be obtained in the following way:
*
* @verbatim
<plugin_path> | <icon_path>
----------------------------------------------------------------------------
$HOME/.frei0r-1/lib/<vendor> | $HOME/.frei0r-1/icons/<vendor>
/usr/local/lib/frei0r-1/<vendor> | /usr/local/share/frei0r-1/icons/<vendor>
/usr/lib/frei0r-1/<vendor> | /usr/share/frei0r-1/icons/<vendor>
* | <plugin_path>
@endverbatim
*
* (The wildcard '*' stands for any other plugin_path)
*
* For other platforms, no location is defined. We recommend to use the
* plugin path where possible.
*/
/**
* \addtogroup concurrency Concurrency
* @section sec_concurrency Concurrency
*
* - \ref f0r_init
* - \ref f0r_deinit
*
* These methods must not be called more than once. It is obvious that no
* concurrent calls are allowed.
*
*
* - \ref f0r_get_plugin_info
* - \ref f0r_get_param_info
* - \ref f0r_construct
* - \ref f0r_destruct
*
* Concurrent calls of these functions are allowed.
*
*
* - \ref f0r_set_param_value
* - \ref f0r_get_param_value
* - \ref f0r_update
* - \ref f0r_update2
*
* If a thread is in one of these methods its allowed for another thread to
* enter one of theses methods for a different effect instance. But for one
* effect instance only one thread is allowed to execute any of these methods.
*/
/** \file
* \brief This file defines the frei0r api, version 1.1.
*
* A conforming plugin must implement and export all functions declared in
* this header.
*
* A conforming application must accept only those plugins which use
* allowed values for the described fields.
*/
#ifndef INCLUDED_FREI0R_H
#define INCLUDED_FREI0R_H
#include <inttypes.h>
/**
* The frei0r API major version
*/
#define FREI0R_MAJOR_VERSION 1
/**
* The frei0r API minor version
*/
#define FREI0R_MINOR_VERSION 1
//---------------------------------------------------------------------------
/**
* f0r_init() is called once when the plugin is loaded by the application.
* \see f0r_deinit
*/
int f0r_init();
/**
* f0r_deinit is called once when the plugin is unloaded by the application.
* \see f0r_init
*/
void f0r_deinit();
//---------------------------------------------------------------------------
/** \addtogroup PLUGIN_TYPE Type of the Plugin
* These defines determine whether the plugin is a
* source, a filter or one of the two mixer types
* @{
*/
/** one input and one output */
#define F0R_PLUGIN_TYPE_FILTER 0
/** just one output */
#define F0R_PLUGIN_TYPE_SOURCE 1
/** two inputs and one output */
#define F0R_PLUGIN_TYPE_MIXER2 2
/** three inputs and one output */
#define F0R_PLUGIN_TYPE_MIXER3 3
/** @} */
//---------------------------------------------------------------------------
/** \addtogroup COLOR_MODEL Color Models
* List of supported color models.
*
* Note: the color models are endian independent, because the
* color components are defined by their positon in memory, not
* by their significance in an uint32_t value.
*
* For effects that work on the color components,
* RGBA8888 is the recommended color model for frei0r-1.1 effects.
* For effects that only work on pixels, PACKED32 is the recommended
* color model since it helps the application to avoid unnecessary
* color conversions.
*
* Effects can choose an appropriate color model, applications must support
* all color models and do conversions if necessary. Source effects
* must not use the PACKED32 color model because the application must know
* in which color model the created framebuffers are represented.
*
* For each color model, a frame consists of width*height pixels which
* are stored row-wise and consecutively in memory. The size of a pixel is
* 4 bytes. There is no extra pitch parameter
* (i.e. the pitch is simply width*4).
*
* The following additional constraints must be honored:
* - The top-most line of a frame is stored first in memory.
* - A frame must be aligned to a 16 byte border in memory.
* - The width and height of a frame must be positive
* - The width and height of a frame must be integer multiples of 8
*
* These constraints make sure that each line is stored at an address aligned
* to 16 byte.
*/
/*@{*/
/**
* In BGRA8888, each pixel is represented by 4 consecutive
* unsigned bytes, where the first byte value represents
* the blue, the second the green, and the third the red color
* component of the pixel. The last value represents the
* alpha value.
*/
#define F0R_COLOR_MODEL_BGRA8888 0
/**
* In RGBA8888, each pixel is represented by 4 consecutive
* unsigned bytes, where the first byte value represents
* the red, the second the green, and the third the blue color
* component of the pixel. The last value represents the
* alpha value.
*/
#define F0R_COLOR_MODEL_RGBA8888 1
/**
* In PACKED32, each pixel is represented by 4 consecutive
* bytes, but it is not defined how the color componets are
* stored. The true color format could be RGBA8888,
* BGRA8888, a packed 32 bit YUV format, or any other
* color format that stores pixels in 32 bit.
*
* This is useful for effects that don't work on color but
* only on pixels (for example a mirror effect).
*
* Note that source effects must not use this color model.
*/
#define F0R_COLOR_MODEL_PACKED32 2
/*@}*/
/**
* The f0r_plugin_info_t structure is filled in by the plugin
* to tell the application about its name, type, number of parameters,
* and version.
*
* An application should ignore (i.e. not use) frei0r effects that
* have unknown values in the plugin_type or color_model field.
* It should also ignore effects with a too high frei0r_version.
*
* This is necessary to be able to extend the frei0r spec (e.g.
* by adding new color models or plugin types) in a way that does not
* result in crashes when loading effects that make use of these
* extensions into an older application.
*
* All strings are unicode, 0-terminated, and the encoding is utf-8.
*/
typedef struct f0r_plugin_info
{
const char* name; /**< The (short) name of the plugin */
const char* author; /**< The plugin author */
/** The plugin type
* \see PLUGIN_TYPE
*/
int plugin_type;
int color_model; /**< The color model used */
int frei0r_version; /**< The frei0r major version this plugin is built for*/
int major_version; /**< The major version of the plugin */
int minor_version; /**< The minor version of the plugin */
int num_params; /**< The number of parameters of the plugin */
const char* explanation; /**< An optional explanation string */
} f0r_plugin_info_t;
/**
* Is called once after init. The plugin has to fill in the values in info.
*
* \param info Pointer to an info struct allocated by the application.
*/
void f0r_get_plugin_info(f0r_plugin_info_t* info);
//---------------------------------------------------------------------------
/** \addtogroup PARAM_TYPE Parameter Types
*
* @{
*/
/**
* Parameter type for boolean values
* \see f0r_param_bool
*/
#define F0R_PARAM_BOOL 0
/**
* Parameter type for doubles
* \see f0r_param_double
*/
#define F0R_PARAM_DOUBLE 1
/**
* Parameter type for color
* \see f0r_param_color
*/
#define F0R_PARAM_COLOR 2
/**
* Parameter type for position
* \see f0r_param_position
*/
#define F0R_PARAM_POSITION 3
/**
* Parameter type for string
* \see f0r_param_string
*/
#define F0R_PARAM_STRING 4
/**
* The boolean type. The allowed range of values is [0, 1].
* [0, 0.5[ is mapped to false and [0.5, 1] is mapped to true.
*/
typedef double f0r_param_bool;
/**
* The double type. The allowed range of values is [0, 1].
*/
typedef double f0r_param_double;
/**
* The color type. All three color components are in the range [0, 1].
*/
typedef struct f0r_param_color
{
float r; /**< red color component */
float g; /**< green color component */
float b; /**< blue color component */
} f0r_param_color_t;
/**
* The position type. Both position coordinates are in the range [0, 1].
*/
typedef struct f0r_param_position
{
double x; /**< x coordinate */
double y; /**< y coordinate */
} f0r_param_position_t;
/**
* The string type.
* Zero terminated array of 8-bit values in utf-8 encoding
*/
typedef char f0r_param_string;
/** @} */
/**
* Similar to f0r_plugin_info_t, this structure is filled by the plugin
* for every parameter.
*
* All strings are unicode, 0-terminated, and the encoding is utf-8.
*/
typedef struct f0r_param_info
{
const char* name; /**<The (short) name of the param */
int type; /**<The type (see the F0R_PARAM_* defines) */
const char* explanation; /**<Optional explanation (can be 0) */
} f0r_param_info_t;
/**
* f0r_get_param_info is called by the application to query the type of
* each parameter.
*
* \param info is allocated by the application and filled by the plugin
* \param param_index the index of the parameter to be queried (from 0 to
* num_params-1)
*/
void f0r_get_param_info(f0r_param_info_t* info, int param_index);
//---------------------------------------------------------------------------
/**
* Transparent instance pointer of the frei0r effect.
*/
typedef void* f0r_instance_t;
/**
* Constructor for effect instances. The plugin returns a pointer to
* its internal instance structure.
*
* The resolution has to be an integer multiple of 8,
* must be greater than 0 and be at most 2048 in both dimensions.
*
* \param width The x-resolution of the processed video frames
* \param height The y-resolution of the processed video frames
* \returns 0 on failure or a pointer != 0 on success
*
* \see f0r_destruct
*/
f0r_instance_t f0r_construct(unsigned int width, unsigned int height);
/**
* Destroys an effect instance.
*
* \param instance The pointer to the plugins internal instance structure.
*
* \see f0r_construct
*/
void f0r_destruct(f0r_instance_t instance);
//---------------------------------------------------------------------------
/**
* Transparent parameter handle.
*/
typedef void* f0r_param_t;
/**
* This function allows the application to set the parameter values of an
* effect instance. Validity of the parameter pointer is handled by the
* application thus the data must be copied by the effect.
*
* \param instance the effect instance
* \param param pointer to the parameter value
* \param param_index index of the parameter
*
* \see f0r_get_param_value
*/
void f0r_set_param_value(f0r_instance_t instance,
f0r_param_t param, int param_index);
/**
* This function allows the application to query the parameter values of an
* effect instance.
*
* \param instance the effect instance
* \param param pointer to the parameter value
* \param param_index index of the parameter
*
* \see f0r_set_param_value
*/
void f0r_get_param_value(f0r_instance_t instance,
f0r_param_t param, int param_index);
//---------------------------------------------------------------------------
/**
* This is where the core effect processing happens. The application calls it
* after it has set the necessary parameter values.
* inframe and outframe must be aligned to an integer multiple of 16 bytes
* in memory.
*
* This funcition should not alter the parameters of the effect in any
* way (\ref f0r_get_param_value should return the same values after a call
* to \ref f0r_update as before the call).
*
* The function is responsible to restore the fpu state (e.g. rounding mode)
* and mmx state if applicable before it returns to the caller.
*
* The host mustn't call \ref f0r_update for effects of type
* \ref F0R_PLUGIN_TYPE_MIXER2 and \ref F0R_PLUGIN_TYPE_MIXER3.
*
* \param instance the effect instance
* \param time the application time in seconds but with subsecond resolution
* (e.g. milli-second resolution). The resolution should be at least
* the inter-frame period of the application.
* \param inframe the incoming video frame (can be zero for sources)
* \param outframe the resulting video frame
*
* \see f0r_update2
*/
void f0r_update(f0r_instance_t instance,
double time, const uint32_t* inframe, uint32_t* outframe);
//---------------------------------------------------------------------------
/**
* For effects of type \ref F0R_PLUGIN_TYPE_SOURCE or
* \ref F0R_PLUGIN_TYPE_FILTER this method is optional. The \ref f0r_update
* method must still be exported for these two effect types. If both are
* provided the behavior of them must be the same.
*
* Effects of type \ref F0R_PLUGIN_TYPE_MIXER2 or \ref F0R_PLUGIN_TYPE_MIXER3 must provide the new \ref f0r_update2 method.
* \param instance the effect instance
* \param time the application time in seconds but with subsecond resolution
* (e.g. milli-second resolution). The resolution should be at least
* the inter-frame period of the application.
* \param inframe1 the first incoming video frame (can be zero for sources)
* \param inframe2 the second incoming video frame
(can be zero for sources and filters)
* \param inframe3 the third incoming video frame
(can be zero for sources, filters and mixer3)
* \param outframe the resulting video frame
*
* \see f0r_update
*/
void f0r_update2(f0r_instance_t instance,
double time,
const uint32_t* inframe1,
const uint32_t* inframe2,
const uint32_t* inframe3,
uint32_t* outframe);
//---------------------------------------------------------------------------
#endif

546
gst/frei0r/gstfrei0r.c Normal file
View file

@ -0,0 +1,546 @@
/* GStreamer
* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstfrei0r.h"
#include "gstfrei0rfilter.h"
#include <string.h>
GST_DEBUG_CATEGORY_STATIC (frei0r_debug);
#define GST_CAT_DEFAULT frei0r_debug
GstCaps *
gst_frei0r_caps_from_color_model (gint color_model)
{
switch (color_model) {
case F0R_COLOR_MODEL_BGRA8888:
return gst_caps_from_string (GST_VIDEO_CAPS_BGRA);
case F0R_COLOR_MODEL_RGBA8888:
return gst_caps_from_string (GST_VIDEO_CAPS_RGBA);
case F0R_COLOR_MODEL_PACKED32:
return gst_caps_from_string (GST_VIDEO_CAPS_BGRA " ; "
GST_VIDEO_CAPS_RGBA " ; "
GST_VIDEO_CAPS_ABGR " ; "
GST_VIDEO_CAPS_ARGB " ; "
GST_VIDEO_CAPS_BGRx " ; "
GST_VIDEO_CAPS_RGBx " ; "
GST_VIDEO_CAPS_xBGR " ; "
GST_VIDEO_CAPS_xRGB " ; " GST_VIDEO_CAPS_YUV ("AYUV"));
default:
break;
}
return NULL;
}
void
gst_frei0r_klass_install_properties (GObjectClass * gobject_class,
GstFrei0rFuncTable * ftable, GstFrei0rProperty * properties,
gint n_properties)
{
gint i, count = 1;
f0r_instance_t *instance = ftable->construct (640, 480);
g_assert (instance);
for (i = 0; i < n_properties; i++) {
f0r_param_info_t *param_info = &properties[i].info;
gchar *prop_name;
ftable->get_param_info (param_info, i);
prop_name = g_ascii_strdown (param_info->name, -1);
g_strcanon (prop_name, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-+", '-');
properties[i].prop_id = count;
properties[i].prop_idx = i;
ftable->get_param_value (instance, &properties[i].default_value, i);
if (param_info->type == F0R_PARAM_STRING)
properties[i].default_value.data.s =
g_strdup (properties[i].default_value.data.s);
switch (param_info->type) {
case F0R_PARAM_BOOL:
g_object_class_install_property (gobject_class, count++,
g_param_spec_boolean (prop_name, param_info->name,
param_info->explanation, FALSE,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
properties[i].n_prop_ids = 1;
break;
case F0R_PARAM_DOUBLE:
g_object_class_install_property (gobject_class, count++,
g_param_spec_double (prop_name, param_info->name,
param_info->explanation, 0.0, 1.0, 0.0,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
properties[i].n_prop_ids = 1;
break;
case F0R_PARAM_STRING:
g_object_class_install_property (gobject_class, count++,
g_param_spec_string (prop_name, param_info->name,
param_info->explanation, NULL,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
properties[i].n_prop_ids = 1;
break;
case F0R_PARAM_COLOR:{
gchar *prop_name_full;
/* FIXME: Full name, i.e. -R */
prop_name_full = g_strconcat (prop_name, "-r", NULL);
g_object_class_install_property (gobject_class, count++,
g_param_spec_float (prop_name_full, param_info->name,
param_info->explanation, 0.0, 1.0, 0.0,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_free (prop_name_full);
prop_name_full = g_strconcat (prop_name, "-g", NULL);
g_object_class_install_property (gobject_class, count++,
g_param_spec_float (prop_name_full, param_info->name,
param_info->explanation, 0.0, 1.0, 0.0,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_free (prop_name_full);
prop_name_full = g_strconcat (prop_name, "-b", NULL);
g_object_class_install_property (gobject_class, count++,
g_param_spec_float (prop_name_full, param_info->name,
param_info->explanation, 0.0, 1.0, 0.0,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_free (prop_name_full);
properties[i].n_prop_ids = 3;
break;
}
case F0R_PARAM_POSITION:{
gchar *prop_name_full;
prop_name_full = g_strconcat (prop_name, "-x", NULL);
g_object_class_install_property (gobject_class, count++,
g_param_spec_double (prop_name_full, param_info->name,
param_info->explanation, 0.0, 1.0, 0.0,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_free (prop_name_full);
prop_name_full = g_strconcat (prop_name, "-y", NULL);
g_object_class_install_property (gobject_class, count++,
g_param_spec_double (prop_name_full, param_info->name,
param_info->explanation, 0.0, 1.0, 0.0,
G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
g_free (prop_name_full);
properties[i].n_prop_ids = 2;
break;
}
default:
g_assert_not_reached ();
break;
}
g_free (prop_name);
}
ftable->destruct (instance);
}
GstFrei0rPropertyValue *
gst_frei0r_property_cache_init (GstFrei0rProperty * properties,
gint n_properties)
{
gint i;
GstFrei0rPropertyValue *ret = g_new0 (GstFrei0rPropertyValue, n_properties);
for (i = 0; i < n_properties; i++) {
memcpy (&ret[i].data, &properties[i].default_value,
sizeof (GstFrei0rPropertyValue));
if (properties[i].info.type == F0R_PARAM_STRING)
ret[i].data.s = g_strdup (ret[i].data.s);
}
return ret;
}
void
gst_frei0r_property_cache_free (GstFrei0rProperty * properties,
GstFrei0rPropertyValue * property_cache, gint n_properties)
{
gint i;
for (i = 0; i < n_properties; i++) {
if (properties[i].info.type == F0R_PARAM_STRING)
g_free (property_cache[i].data.s);
}
g_free (property_cache);
}
f0r_instance_t *
gst_frei0r_instance_construct (GstFrei0rFuncTable * ftable,
GstFrei0rProperty * properties, gint n_properties,
GstFrei0rPropertyValue * property_cache, gint width, gint height)
{
f0r_instance_t *instance = ftable->construct (width, height);
gint i;
for (i = 0; i < n_properties; i++) {
if (properties[i].info.type == F0R_PARAM_STRING)
ftable->set_param_value (instance, property_cache[i].data.s, i);
else
ftable->set_param_value (instance, &property_cache[i].data, i);
}
return instance;
}
gboolean
gst_frei0r_get_property (f0r_instance_t * instance, GstFrei0rFuncTable * ftable,
GstFrei0rProperty * properties, gint n_properties,
GstFrei0rPropertyValue * property_cache, guint prop_id, GValue * value)
{
gint i;
GstFrei0rProperty *prop = NULL;
for (i = 0; i < n_properties; i++) {
if (properties[i].prop_id <= prop_id &&
properties[i].prop_id + properties[i].n_prop_ids > prop_id) {
prop = &properties[i];
break;
}
}
if (!prop)
return FALSE;
switch (prop->info.type) {
case F0R_PARAM_BOOL:{
gdouble d;
if (instance)
ftable->get_param_value (instance, &d, prop->prop_idx);
else
d = property_cache[prop->prop_idx].data.b ? 1.0 : 0.0;
g_value_set_boolean (value, (d < 0.5) ? FALSE : TRUE);
break;
}
case F0R_PARAM_DOUBLE:{
gdouble d;
if (instance)
ftable->get_param_value (instance, &d, prop->prop_idx);
else
d = property_cache[prop->prop_idx].data.d;
g_value_set_double (value, d);
break;
}
case F0R_PARAM_STRING:{
const gchar *s;
if (instance)
ftable->get_param_value (instance, &s, prop->prop_idx);
else
s = property_cache[prop->prop_idx].data.s;
g_value_set_string (value, s);
break;
}
case F0R_PARAM_COLOR:{
f0r_param_color_t color;
if (instance)
ftable->get_param_value (instance, &color, prop->prop_idx);
else
color = property_cache[prop->prop_idx].data.color;
switch (prop_id - prop->prop_id) {
case 0:
g_value_set_float (value, color.r);
break;
case 1:
g_value_set_float (value, color.g);
break;
case 2:
g_value_set_float (value, color.b);
break;
}
break;
}
case F0R_PARAM_POSITION:{
f0r_param_position_t position;
if (instance)
ftable->get_param_value (instance, &position, prop->prop_idx);
else
position = property_cache[prop->prop_idx].data.position;
switch (prop_id - prop->prop_id) {
case 0:
g_value_set_double (value, position.x);
break;
case 1:
g_value_set_double (value, position.y);
break;
}
break;
}
default:
g_assert_not_reached ();
break;
}
return TRUE;
}
gboolean
gst_frei0r_set_property (f0r_instance_t * instance, GstFrei0rFuncTable * ftable,
GstFrei0rProperty * properties, gint n_properties,
GstFrei0rPropertyValue * property_cache, guint prop_id,
const GValue * value)
{
GstFrei0rProperty *prop = NULL;
gint i;
for (i = 0; i < n_properties; i++) {
if (properties[i].prop_id <= prop_id &&
properties[i].prop_id + properties[i].n_prop_ids > prop_id) {
prop = &properties[i];
break;
}
}
if (!prop)
return FALSE;
switch (prop->info.type) {
case F0R_PARAM_BOOL:{
gboolean b = g_value_get_boolean (value);
gdouble d = b ? 1.0 : 0.0;
if (instance)
ftable->set_param_value (instance, &d, prop->prop_idx);
property_cache[prop->prop_idx].data.b = b;
break;
}
case F0R_PARAM_DOUBLE:{
gdouble d = g_value_get_double (value);
if (instance)
ftable->set_param_value (instance, &d, prop->prop_idx);
property_cache[prop->prop_idx].data.d = d;
break;
}
case F0R_PARAM_STRING:{
gchar *s = g_value_dup_string (value);
/* Copies the string */
if (instance)
ftable->set_param_value (instance, s, prop->prop_idx);
property_cache[prop->prop_idx].data.s = s;
break;
}
case F0R_PARAM_COLOR:{
gfloat f = g_value_get_float (value);
f0r_param_color_t *color = &property_cache[prop->prop_idx].data.color;
switch (prop_id - prop->prop_id) {
case 0:
color->r = f;
break;
case 1:
color->g = f;
break;
case 2:
color->b = f;
break;
default:
g_assert_not_reached ();
}
if (instance)
ftable->set_param_value (instance, color, prop->prop_idx);
break;
}
case F0R_PARAM_POSITION:{
gdouble d = g_value_get_double (value);
f0r_param_position_t *position =
&property_cache[prop->prop_idx].data.position;
switch (prop_id - prop->prop_id) {
case 0:
position->x = d;
break;
case 1:
position->y = d;
break;
default:
g_assert_not_reached ();
}
if (instance)
ftable->set_param_value (instance, position, prop->prop_idx);
break;
}
default:
g_assert_not_reached ();
break;
}
return TRUE;
}
static gboolean
register_plugin (GstPlugin * plugin, const gchar * filename)
{
GModule *module;
gboolean ret = FALSE;
GstFrei0rFuncTable ftable = { NULL, };
f0r_plugin_info_t info = { NULL, };
GST_DEBUG ("Registering plugin '%s'", filename);
module = g_module_open (filename, G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL);
if (!module) {
GST_WARNING ("Failed to load plugin");
return FALSE;
}
if (!g_module_symbol (module, "f0r_init", (gpointer *) & ftable.init)) {
GST_INFO ("No frei0r plugin");
g_module_close (module);
return FALSE;
}
if (!g_module_symbol (module, "f0r_deinit", (gpointer *) & ftable.deinit) ||
!g_module_symbol (module, "f0r_construct",
(gpointer *) & ftable.construct)
|| !g_module_symbol (module, "f0r_destruct",
(gpointer *) & ftable.destruct)
|| !g_module_symbol (module, "f0r_get_plugin_info",
(gpointer *) & ftable.get_plugin_info)
|| !g_module_symbol (module, "f0r_get_param_info",
(gpointer *) & ftable.get_param_info)
|| !g_module_symbol (module, "f0r_set_param_value",
(gpointer *) & ftable.set_param_value)
|| !g_module_symbol (module, "f0r_get_param_value",
(gpointer *) & ftable.get_param_value))
goto invalid_frei0r_plugin;
/* One of these must exist */
if (!g_module_symbol (module, "f0r_update", (gpointer *) & ftable.update) &&
!g_module_symbol (module, "f0r_update2", (gpointer *) & ftable.update2))
goto invalid_frei0r_plugin;
ftable.get_plugin_info (&info);
if (info.frei0r_version > 1) {
GST_WARNING ("Unsupported frei0r version %d", info.frei0r_version);
g_module_close (module);
return FALSE;
}
if (info.color_model > F0R_COLOR_MODEL_PACKED32) {
GST_WARNING ("Unsupported color model %d", info.color_model);
g_module_close (module);
return FALSE;
}
switch (info.plugin_type) {
case F0R_PLUGIN_TYPE_FILTER:
ret = gst_frei0r_filter_register (plugin, &info, &ftable);
break;
case F0R_PLUGIN_TYPE_SOURCE:
case F0R_PLUGIN_TYPE_MIXER2:
case F0R_PLUGIN_TYPE_MIXER3:
GST_WARNING
("Source, Mixer2 and Mixer3 frei0r plugins not supported yet");
g_module_close (module);
break;
default:
break;
}
return ret;
invalid_frei0r_plugin:
GST_ERROR ("Invalid frei0r plugin");
g_module_close (module);
return FALSE;
}
static gboolean
register_plugins (GstPlugin * plugin, const gchar * path)
{
GDir *dir;
gchar *filename;
const gchar *entry_name;
gboolean ret = FALSE;
GST_DEBUG ("Scanning director '%s' for frei0r plugins", path);
dir = g_dir_open (path, 0, NULL);
if (!dir)
return FALSE;
while ((entry_name = g_dir_read_name (dir))) {
filename = g_build_filename (path, entry_name, NULL);
if ((g_str_has_suffix (filename, G_MODULE_SUFFIX)
#ifdef GST_EXTRA_MODULE_SUFFIX
|| g_str_has_suffix (filename, GST_EXTRA_MODULE_SUFFIX)
#endif
) && g_file_test (filename, G_FILE_TEST_IS_REGULAR)) {
ret |= register_plugin (plugin, filename);
} else if (g_file_test (filename, G_FILE_TEST_IS_DIR)) {
ret |= register_plugins (plugin, filename);
}
g_free (filename);
}
g_dir_close (dir);
return ret;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
const gchar *homedir;
gchar *path;
GST_DEBUG_CATEGORY_INIT (frei0r_debug, "frei0r", 0, "frei0r");
gst_plugin_add_dependency_simple (plugin,
"HOME/.frei0r-1/lib",
"/usr/lib/frei0r-1:/usr/local/lib/frei0r-1",
NULL, GST_PLUGIN_DEPENDENCY_FLAG_RECURSE);
register_plugins (plugin, "/usr/lib/frei0r-1");
register_plugins (plugin, "/usr/local/lib/frei0r-1");
homedir = g_get_home_dir ();
path = g_build_filename (homedir, ".frei0r-1", NULL);
register_plugins (plugin, path);
g_free (path);
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"frei0r",
"frei0r plugin library",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

91
gst/frei0r/gstfrei0r.h Normal file
View file

@ -0,0 +1,91 @@
/* GStreamer
* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@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.
*/
#ifndef __GST_FREI0R_H__
#define __GST_FREI0R_H__
#include <gst/gst.h>
#include "frei0r.h"
G_BEGIN_DECLS
typedef struct _GstFrei0rFuncTable GstFrei0rFuncTable;
typedef struct _GstFrei0rProperty GstFrei0rProperty;
typedef struct _GstFrei0rPropertyValue GstFrei0rPropertyValue;
struct _GstFrei0rPropertyValue {
union {
gboolean b;
gdouble d;
gchar *s;
f0r_param_position_t position;
f0r_param_color_t color;
} data;
};
struct _GstFrei0rProperty {
guint prop_id;
guint n_prop_ids;
gint prop_idx;
f0r_param_info_t info;
GstFrei0rPropertyValue default_value;
};
struct _GstFrei0rFuncTable {
int (*init) (void);
void (*deinit) (void);
f0r_instance_t (*construct) (unsigned int width, unsigned int height);
void (*destruct) (f0r_instance_t instance);
void (*get_plugin_info) (f0r_plugin_info_t* info);
void (*get_param_info) (f0r_param_info_t* info, int param_index);
void (*set_param_value) (f0r_instance_t instance,
f0r_param_t param, int param_index);
void (*get_param_value) (f0r_instance_t instance,
f0r_param_t param, int param_index);
void (*update) (f0r_instance_t instance,
double time, const uint32_t* inframe, uint32_t* outframe);
void (*update2) (f0r_instance_t instance,
double time,
const uint32_t* inframe1,
const uint32_t* inframe2,
const uint32_t* inframe3,
uint32_t* outframe);
};
void gst_frei0r_klass_install_properties (GObjectClass *gobject_class, GstFrei0rFuncTable *ftable, GstFrei0rProperty *properties, gint n_properties);
f0r_instance_t * gst_frei0r_instance_construct (GstFrei0rFuncTable *ftable, GstFrei0rProperty *properties, gint n_properties, GstFrei0rPropertyValue *property_cache, gint width, gint height);
GstFrei0rPropertyValue * gst_frei0r_property_cache_init (GstFrei0rProperty *properties, gint n_properties);
void gst_frei0r_property_cache_free (GstFrei0rProperty *properties, GstFrei0rPropertyValue *property_cache, gint n_properties);
GstCaps * gst_frei0r_caps_from_color_model (gint color_model);
gboolean gst_frei0r_get_property (f0r_instance_t *instance, GstFrei0rFuncTable *ftable, GstFrei0rProperty *properties, gint n_properties, GstFrei0rPropertyValue *property_cache, guint prop_id, GValue *value);
gboolean gst_frei0r_set_property (f0r_instance_t *instance, GstFrei0rFuncTable *ftable, GstFrei0rProperty *properties, gint n_properties, GstFrei0rPropertyValue *property_cache, guint prop_id, const GValue *value);
G_END_DECLS
#endif /* __GST_FREI0R_H__ */

255
gst/frei0r/gstfrei0rfilter.c Normal file
View file

@ -0,0 +1,255 @@
/* GStreamer
* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstfrei0r.h"
#include "gstfrei0rfilter.h"
typedef struct
{
f0r_plugin_info_t info;
GstFrei0rFuncTable ftable;
} GstFrei0rFilterClassData;
static gboolean
gst_frei0r_filter_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
guint * size)
{
GstVideoFormat fmt;
gint width, height;
if (!gst_video_format_parse_caps (caps, &fmt, &width, &height))
return FALSE;
*size = gst_video_format_get_size (fmt, width, height);
return TRUE;
}
static gboolean
gst_frei0r_filter_set_caps (GstBaseTransform * trans, GstCaps * incaps,
GstCaps * outcaps)
{
GstFrei0rFilter *self = GST_FREI0R_FILTER (trans);
GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (trans);
GstVideoFormat fmt;
gint width, height;
if (!gst_video_format_parse_caps (incaps, &fmt, &width, &height))
return FALSE;
if (self->f0r_instance) {
klass->ftable->destruct (self->f0r_instance);
self->f0r_instance = NULL;
}
self->f0r_instance =
gst_frei0r_instance_construct (klass->ftable, klass->properties,
klass->n_properties, self->property_cache, width, height);
return TRUE;
}
static gboolean
gst_frei0r_filter_stop (GstBaseTransform * trans)
{
GstFrei0rFilter *self = GST_FREI0R_FILTER (trans);
GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (trans);
if (self->f0r_instance) {
klass->ftable->destruct (self->f0r_instance);
self->f0r_instance = NULL;
}
return TRUE;
}
static GstFlowReturn
gst_frei0r_filter_transform (GstBaseTransform * trans, GstBuffer * inbuf,
GstBuffer * outbuf)
{
GstFrei0rFilter *self = GST_FREI0R_FILTER (trans);
GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (trans);
gdouble time;
if (!self->f0r_instance)
return GST_FLOW_NOT_NEGOTIATED;
time = ((gdouble) GST_BUFFER_TIMESTAMP (inbuf)) / GST_SECOND;
if (klass->ftable->update2)
klass->ftable->update2 (self->f0r_instance, time,
(const guint32 *) GST_BUFFER_DATA (inbuf), NULL, NULL,
(guint32 *) GST_BUFFER_DATA (outbuf));
else
klass->ftable->update (self->f0r_instance, time,
(const guint32 *) GST_BUFFER_DATA (inbuf),
(guint32 *) GST_BUFFER_DATA (outbuf));
return GST_FLOW_OK;
}
static void
gst_frei0r_filter_finalize (GObject * object)
{
GstFrei0rFilter *self = GST_FREI0R_FILTER (object);
GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (object);
if (self->f0r_instance) {
klass->ftable->destruct (self->f0r_instance);
self->f0r_instance = NULL;
}
if (self->property_cache)
gst_frei0r_property_cache_free (klass->properties, self->property_cache,
klass->n_properties);
self->property_cache = NULL;
G_OBJECT_CLASS (g_type_class_peek_parent (klass))->finalize (object);
}
static void
gst_frei0r_filter_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstFrei0rFilter *self = GST_FREI0R_FILTER (object);
GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (object);
if (!gst_frei0r_get_property (self->f0r_instance, klass->ftable,
klass->properties, klass->n_properties, self->property_cache, prop_id,
value))
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
static void
gst_frei0r_filter_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFrei0rFilter *self = GST_FREI0R_FILTER (object);
GstFrei0rFilterClass *klass = GST_FREI0R_FILTER_GET_CLASS (object);
if (!gst_frei0r_set_property (self->f0r_instance, klass->ftable,
klass->properties, klass->n_properties, self->property_cache, prop_id,
value))
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
static void
gst_frei0r_filter_class_init (GstFrei0rFilterClass * klass,
GstFrei0rFilterClassData * class_data)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
GstBaseTransformClass *gsttrans_class = (GstBaseTransformClass *) klass;
GstPadTemplate *templ;
GstCaps *caps;
gchar *author;
klass->ftable = &class_data->ftable;
klass->info = &class_data->info;
gobject_class->finalize = gst_frei0r_filter_finalize;
gobject_class->set_property = gst_frei0r_filter_set_property;
gobject_class->get_property = gst_frei0r_filter_get_property;
klass->n_properties = klass->info->num_params;
klass->properties = g_new0 (GstFrei0rProperty, klass->n_properties);
gst_frei0r_klass_install_properties (gobject_class, klass->ftable,
klass->properties, klass->n_properties);
author =
g_strdup_printf
("Sebastian Dröge <sebastian.droege@collabora.co.uk>, %s",
class_data->info.author);
gst_element_class_set_details_simple (gstelement_class, class_data->info.name,
"Filter/Editor/Video", class_data->info.explanation, author);
g_free (author);
caps = gst_frei0r_caps_from_color_model (class_data->info.color_model);
templ =
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
gst_caps_ref (caps));
gst_element_class_add_pad_template (gstelement_class, templ);
templ = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps);
gst_element_class_add_pad_template (gstelement_class, templ);
gsttrans_class->get_unit_size =
GST_DEBUG_FUNCPTR (gst_frei0r_filter_get_unit_size);
gsttrans_class->set_caps = GST_DEBUG_FUNCPTR (gst_frei0r_filter_set_caps);
gsttrans_class->stop = GST_DEBUG_FUNCPTR (gst_frei0r_filter_stop);
gsttrans_class->transform = GST_DEBUG_FUNCPTR (gst_frei0r_filter_transform);
}
static void
gst_frei0r_filter_init (GstFrei0rFilter * self, GstFrei0rFilterClass * klass)
{
self->property_cache =
gst_frei0r_property_cache_init (klass->properties, klass->n_properties);
}
gboolean
gst_frei0r_filter_register (GstPlugin * plugin, const f0r_plugin_info_t * info,
const GstFrei0rFuncTable * ftable)
{
GTypeInfo typeinfo = {
sizeof (GstFrei0rFilterClass),
NULL,
NULL,
(GClassInitFunc) gst_frei0r_filter_class_init,
NULL,
NULL,
sizeof (GstFrei0rFilter),
0,
(GInstanceInitFunc) gst_frei0r_filter_init
};
GType type;
gchar *type_name, *tmp;
GstFrei0rFilterClassData *class_data;
tmp = g_strdup_printf ("frei0r-%s", info->name);
type_name = g_ascii_strdown (tmp, -1);
g_free (tmp);
g_strcanon (type_name, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-+", '-');
if (g_type_from_name (type_name)) {
GST_WARNING ("Type '%s' already exists", type_name);
return FALSE;
}
if (!ftable->init ()) {
GST_ERROR ("Initializing plugin failed");
return FALSE;
}
class_data = g_new0 (GstFrei0rFilterClassData, 1);
memcpy (&class_data->info, info, sizeof (f0r_plugin_info_t));
memcpy (&class_data->ftable, ftable, sizeof (GstFrei0rFuncTable));
typeinfo.class_data = class_data;
type =
g_type_register_static (GST_TYPE_VIDEO_FILTER, type_name, &typeinfo, 0);
return (gst_element_register (plugin, type_name, GST_RANK_NONE, type));
}

63
gst/frei0r/gstfrei0rfilter.h Normal file
View file

@ -0,0 +1,63 @@
/* GStreamer
* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@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.
*/
#ifndef __GST_FREI0R_FILTER_H__
#define __GST_FREI0R_FILTER_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/video/gstvideofilter.h>
#include "frei0r.h"
#include "gstfrei0r.h"
G_BEGIN_DECLS
#define GST_FREI0R_FILTER(obj) \
((GstFrei0rFilter *) obj)
#define GST_FREI0R_FILTER_CLASS(klass) \
((GstFrei0rFilterClass *) klass)
#define GST_FREI0R_FILTER_GET_CLASS(obj) \
((GstFrei0rFilterClass *) g_type_class_peek (G_TYPE_FROM_INSTANCE (obj)))
typedef struct _GstFrei0rFilter GstFrei0rFilter;
typedef struct _GstFrei0rFilterClass GstFrei0rFilterClass;
struct _GstFrei0rFilter {
GstVideoFilter parent;
f0r_instance_t *f0r_instance;
GstFrei0rPropertyValue *property_cache;
};
struct _GstFrei0rFilterClass {
GstVideoFilterClass parent;
f0r_plugin_info_t *info;
GstFrei0rFuncTable *ftable;
GstFrei0rProperty *properties;
gint n_properties;
};
gboolean gst_frei0r_filter_register (GstPlugin *plugin, const f0r_plugin_info_t *info, const GstFrei0rFuncTable *ftable);
G_END_DECLS
#endif /* __GST_FREI0R_FILTER_H__ */