gstreamer/subprojects/gst-plugins-bad/sys/mediafoundation/gstmfsourceobject.cpp

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/* GStreamer
* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.com>
* Copyright (C) 2020 Seungha Yang <seungha@centricular.com>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstmfconfig.h"
#include "gstmfsourceobject.h"
#if GST_MF_WINAPI_APP
#include "gstmfcapturewinrt.h"
#endif
#if GST_MF_WINAPI_DESKTOP
#include "gstmfsourcereader.h"
#endif
GST_DEBUG_CATEGORY_EXTERN (gst_mf_source_object_debug);
#define GST_CAT_DEFAULT gst_mf_source_object_debug
enum
{
PROP_0,
PROP_DEVICE_PATH,
PROP_DEVICE_NAME,
PROP_DEVICE_INDEX,
PROP_SOURCE_TYPE,
};
#define DEFAULT_DEVICE_PATH nullptr
#define DEFAULT_DEVICE_NAME nullptr
#define DEFAULT_DEVICE_INDEX -1
#define DEFAULT_SOURCE_TYPE GST_MF_SOURCE_TYPE_VIDEO
GType
gst_mf_source_type_get_type (void)
{
static GType source_type = 0;
static const GEnumValue source_types[] = {
{GST_MF_SOURCE_TYPE_VIDEO, "Video", "video"},
{0, nullptr, nullptr}
};
if (!source_type) {
source_type = g_enum_register_static ("GstMFSourceMode", source_types);
}
return source_type;
}
static void gst_mf_source_object_finalize (GObject * object);
static void gst_mf_source_object_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_mf_source_object_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
#define gst_mf_source_object_parent_class parent_class
G_DEFINE_ABSTRACT_TYPE (GstMFSourceObject, gst_mf_source_object,
GST_TYPE_OBJECT);
static void
gst_mf_source_object_class_init (GstMFSourceObjectClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GParamFlags flags =
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
gobject_class->finalize = gst_mf_source_object_finalize;
gobject_class->get_property = gst_mf_source_object_get_property;
gobject_class->set_property = gst_mf_source_object_set_property;
g_object_class_install_property (gobject_class, PROP_DEVICE_PATH,
g_param_spec_string ("device-path", "Device Path",
"The device path", DEFAULT_DEVICE_PATH, flags));
g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
g_param_spec_string ("device-name", "Device Name",
"The human-readable device name", DEFAULT_DEVICE_NAME, flags));
g_object_class_install_property (gobject_class, PROP_DEVICE_INDEX,
g_param_spec_int ("device-index", "Device Index",
"The zero-based device index", -1, G_MAXINT, DEFAULT_DEVICE_INDEX,
flags));
g_object_class_install_property (gobject_class, PROP_SOURCE_TYPE,
g_param_spec_enum ("source-type", "Source Type",
"Source Type", GST_TYPE_MF_SOURCE_TYPE, DEFAULT_SOURCE_TYPE, flags));
}
static void
gst_mf_source_object_init (GstMFSourceObject * self)
{
self->device_index = DEFAULT_DEVICE_INDEX;
self->source_type = DEFAULT_SOURCE_TYPE;
self->source_state = GST_MF_DEVICE_NOT_FOUND;
g_weak_ref_init (&self->client, nullptr);
}
static void
gst_mf_source_object_finalize (GObject * object)
{
GstMFSourceObject *self = GST_MF_SOURCE_OBJECT (object);
g_free (self->device_path);
g_free (self->device_name);
g_weak_ref_clear (&self->client);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_mf_source_object_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstMFSourceObject *self = GST_MF_SOURCE_OBJECT (object);
switch (prop_id) {
case PROP_DEVICE_PATH:
g_value_set_string (value, self->device_path);
break;
case PROP_DEVICE_NAME:
g_value_set_string (value, self->device_name);
break;
case PROP_DEVICE_INDEX:
g_value_set_int (value, self->device_index);
break;
case PROP_SOURCE_TYPE:
g_value_set_enum (value, self->source_type);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_mf_source_object_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstMFSourceObject *self = GST_MF_SOURCE_OBJECT (object);
switch (prop_id) {
case PROP_DEVICE_PATH:
g_free (self->device_path);
self->device_path = g_value_dup_string (value);
break;
case PROP_DEVICE_NAME:
g_free (self->device_name);
self->device_name = g_value_dup_string (value);
break;
case PROP_DEVICE_INDEX:
self->device_index = g_value_get_int (value);
break;
case PROP_SOURCE_TYPE:
self->source_type = (GstMFSourceType) g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
gboolean
gst_mf_source_object_start (GstMFSourceObject * object)
{
GstMFSourceObjectClass *klass;
g_return_val_if_fail (GST_IS_MF_SOURCE_OBJECT (object), FALSE);
klass = GST_MF_SOURCE_OBJECT_GET_CLASS (object);
g_assert (klass->start != nullptr);
return klass->start (object);
}
gboolean
gst_mf_source_object_stop (GstMFSourceObject * object)
{
GstMFSourceObjectClass *klass;
g_return_val_if_fail (GST_IS_MF_SOURCE_OBJECT (object), FALSE);
klass = GST_MF_SOURCE_OBJECT_GET_CLASS (object);
g_assert (klass->stop != nullptr);
return klass->stop (object);
}
GstFlowReturn
gst_mf_source_object_fill (GstMFSourceObject * object, GstBuffer * buffer)
{
GstMFSourceObjectClass *klass;
g_return_val_if_fail (GST_IS_MF_SOURCE_OBJECT (object), GST_FLOW_ERROR);
g_return_val_if_fail (GST_IS_BUFFER (buffer), GST_FLOW_ERROR);
klass = GST_MF_SOURCE_OBJECT_GET_CLASS (object);
g_assert (klass->fill != nullptr);
return klass->fill (object, buffer);
}
GstFlowReturn
gst_mf_source_object_create (GstMFSourceObject * object, GstBuffer ** buffer)
{
GstMFSourceObjectClass *klass;
g_return_val_if_fail (GST_IS_MF_SOURCE_OBJECT (object), GST_FLOW_ERROR);
g_return_val_if_fail (buffer != nullptr, GST_FLOW_ERROR);
klass = GST_MF_SOURCE_OBJECT_GET_CLASS (object);
g_assert (klass->create != nullptr);
return klass->create (object, buffer);
}
GstFlowReturn
gst_mf_source_object_get_sample (GstMFSourceObject * object,
GstSample ** sample)
{
GstMFSourceObjectClass *klass;
g_return_val_if_fail (GST_IS_MF_SOURCE_OBJECT (object), GST_FLOW_ERROR);
g_return_val_if_fail (sample != nullptr, GST_FLOW_ERROR);
klass = GST_MF_SOURCE_OBJECT_GET_CLASS (object);
g_assert (klass->get_sample != nullptr);
return klass->get_sample (object, sample);
}
void
gst_mf_source_object_set_flushing (GstMFSourceObject * object,
gboolean flushing)
{
GstMFSourceObjectClass *klass;
g_return_if_fail (GST_IS_MF_SOURCE_OBJECT (object));
klass = GST_MF_SOURCE_OBJECT_GET_CLASS (object);
if (flushing) {
if (klass->unlock)
klass->unlock (object);
} else {
if (klass->unlock_stop)
klass->unlock_stop (object);
}
}
gboolean
gst_mf_source_object_set_caps (GstMFSourceObject * object, GstCaps * caps)
{
GstMFSourceObjectClass *klass;
g_return_val_if_fail (GST_IS_MF_SOURCE_OBJECT (object), FALSE);
klass = GST_MF_SOURCE_OBJECT_GET_CLASS (object);
g_assert (klass->set_caps != nullptr);
return klass->set_caps (object, caps);
}
GstCaps *
gst_mf_source_object_get_caps (GstMFSourceObject * object)
{
GstMFSourceObjectClass *klass;
g_return_val_if_fail (GST_IS_MF_SOURCE_OBJECT (object), nullptr);
klass = GST_MF_SOURCE_OBJECT_GET_CLASS (object);
g_assert (klass->get_caps != nullptr);
return klass->get_caps (object);
}
gboolean
gst_mf_source_object_set_client (GstMFSourceObject * object,
GstElement * client)
{
g_return_val_if_fail (GST_IS_MF_SOURCE_OBJECT (object), FALSE);
g_weak_ref_set (&object->client, client);
return TRUE;
}
GstClockTime
gst_mf_source_object_get_running_time (GstMFSourceObject * object)
{
GstElement *client = nullptr;
GstClockTime timestamp = GST_CLOCK_TIME_NONE;
g_return_val_if_fail (GST_IS_MF_SOURCE_OBJECT (object), GST_CLOCK_TIME_NONE);
client = (GstElement *) g_weak_ref_get (&object->client);
if (client) {
GstClockTime basetime = client->base_time;
GstClock *clock;
clock = gst_element_get_clock (client);
if (clock) {
GstClockTime now;
now = gst_clock_get_time (clock);
timestamp = now - basetime;
gst_object_unref (clock);
}
gst_object_unref (client);
}
return timestamp;
}
static gboolean
gst_mf_source_object_use_winrt_api (void)
{
static gsize check_once = 0;
static gboolean ret = FALSE;
if (g_once_init_enter (&check_once)) {
#if (!GST_MF_WINAPI_APP)
/* WinRT is not supported, always false */
ret = FALSE;
#else
#if (!GST_MF_WINAPI_DESKTOP)
/* WinRT is supported but desktop API was disabled,
* always true */
ret = TRUE;
#else
/* Both app and desktop APIs were enabled, check user choice */
{
const gchar *env;
env = g_getenv ("GST_USE_MF_WINRT_CAPTURE");
if (env && g_str_has_prefix (env, "1"))
ret = TRUE;
else
ret = FALSE;
}
#endif
#endif
g_once_init_leave (&check_once, 1);
}
return ret;
}
GstMFSourceObject *
gst_mf_source_object_new (GstMFSourceType type, gint device_index,
const gchar * device_name, const gchar * device_path, gpointer dispatcher)
{
#if (!GST_MF_WINAPI_APP)
GST_INFO ("Try IMFSourceReader implementation");
return gst_mf_source_reader_new (type,
device_index, device_name, device_path);
#else
#if (!GST_MF_WINAPI_DESKTOP)
GST_INFO ("Try WinRT implementation");
return gst_mf_capture_winrt_new (type,
device_index, device_name, device_path, dispatcher);
#else
if (gst_mf_source_object_use_winrt_api ()) {
GST_INFO ("Both Desktop and WinRT APIs were enabled, user choice: WinRT");
return gst_mf_capture_winrt_new (type,
device_index, device_name, device_path, dispatcher);
} else {
GST_INFO
("Both Desktop and WinRT APIs were enabled, default: IMFSourceReader");
return gst_mf_source_reader_new (type,
device_index, device_name, device_path);
}
#endif
#endif
g_assert_not_reached ();
return nullptr;
}
GstMFSourceResult
gst_mf_source_object_enumerate (gint device_index, GstMFSourceObject ** object)
{
#if (!GST_MF_WINAPI_APP)
return gst_mf_source_reader_enumerate (device_index, object);
#else
#if (!GST_MF_WINAPI_DESKTOP)
return gst_mf_capture_winrt_enumerate (device_index, object);
#else
if (gst_mf_source_object_use_winrt_api ())
return gst_mf_capture_winrt_enumerate (device_index, object);
return gst_mf_source_reader_enumerate (device_index, object);
#endif
#endif
g_assert_not_reached ();
return GST_MF_DEVICE_NOT_FOUND;
}
gint
gst_mf_source_object_caps_compare (GstCaps * caps1, GstCaps * caps2)
{
GstStructure *s1, *s2;
const gchar *n1, *n2;
gboolean m1_is_raw, m2_is_raw;
gint w1 = 0, h1 = 0, w2 = 0, h2 = 0;
gint r1, r2;
gint num1 = 0, den1 = 1, num2 = 0, den2 = 1;
gint fraction_cmp;
/* sorting priority
* - raw video > comprssed
* - raw video format
* - higher resolution
* - higher framerate
*/
s1 = gst_caps_get_structure (caps1, 0);
n1 = gst_structure_get_name (s1);
s2 = gst_caps_get_structure (caps2, 0);
n2 = gst_structure_get_name (s2);
m1_is_raw = g_strcmp0 (n1, "video/x-raw") == 0;
m2_is_raw = g_strcmp0 (n2, "video/x-raw") == 0;
if (m1_is_raw && !m2_is_raw)
return -1;
else if (!m1_is_raw && m2_is_raw)
return 1;
/* if both are raw formats */
if (m1_is_raw) {
gint format_cmp = g_strcmp0 (gst_structure_get_string (s1, "format"),
gst_structure_get_string (s2, "format"));
if (format_cmp)
return format_cmp;
}
/* resolution */
gst_structure_get_int (s1, "width", &w1);
gst_structure_get_int (s1, "height", &h1);
gst_structure_get_int (s2, "width", &w2);
gst_structure_get_int (s2, "height", &h2);
r1 = w1 * h1;
r2 = w2 * h2;
/* higher resolution first */
if (r1 != r2)
return r2 - r1;
gst_structure_get_fraction (s1, "framerate", &num1, &den1);
gst_structure_get_fraction (s2, "framerate", &num2, &den2);
fraction_cmp = gst_util_fraction_compare (num1, den1, num2, den2);
/* higher framerate first */
return fraction_cmp * -1;
}