gstreamer/subprojects/gst-plugins-bad/sys/wasapi2/gstwasapi2util.h
Seungha Yang cb7958e710 wasapi2: Add support for process loopback capture
Adding loopback capture mode for specified PID.

Note that this feature requires Windows 10 build 20348
(Windows 11/Windows Server 2022 or later),
and any process loopback related properties will not be exposed
if OS does not support it.

Example launch lines:
* wasapi2src loopback-mode=include-process-tree loopback-target-pid=<PID>
 Captures audio generated by an application (specified by PID)
 and its child process
* wasapi2src loopback-mode=exclude-process-tree loopback-target-pid=<PID>
 Captures desktop audio excluding PID and its child process

Fixes: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1278
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3195>
2022-10-17 23:28:48 +00:00

74 lines
2.7 KiB
C

/* GStreamer
* 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.
*/
#ifndef __GST_WASAPI2_UTIL_H__
#define __GST_WASAPI2_UTIL_H__
#include <gst/gst.h>
#include <gst/audio/audio.h>
#include <windows.h>
#include <initguid.h>
#include <audioclient.h>
G_BEGIN_DECLS
/* Static Caps shared between source, sink, and device provider */
#define GST_WASAPI2_STATIC_CAPS "audio/x-raw, " \
"format = (string) " GST_AUDIO_FORMATS_ALL ", " \
"layout = (string) interleaved, " \
"rate = " GST_AUDIO_RATE_RANGE ", " \
"channels = " GST_AUDIO_CHANNELS_RANGE
#define GST_WASAPI2_CLEAR_COM(obj) G_STMT_START { \
if (obj) { \
(obj)->Release (); \
(obj) = NULL; \
} \
} G_STMT_END
gboolean _gst_wasapi2_result (HRESULT hr,
GstDebugCategory * cat,
const gchar * file,
const gchar * function,
gint line);
#define gst_wasapi2_result(result) \
_gst_wasapi2_result (result, GST_CAT_DEFAULT, __FILE__, GST_FUNCTION, __LINE__)
guint64 gst_wasapi2_util_waveformatex_to_channel_mask (WAVEFORMATEX * format,
GstAudioChannelPosition ** out_position);
const gchar * gst_wasapi2_util_waveformatex_to_audio_format (WAVEFORMATEX * format);
gboolean gst_wasapi2_util_parse_waveformatex (WAVEFORMATEX * format,
GstCaps * template_caps,
GstCaps ** out_caps,
GstAudioChannelPosition ** out_positions);
gchar * gst_wasapi2_util_get_error_message (HRESULT hr);
gboolean gst_wasapi2_can_automatic_stream_routing (void);
gboolean gst_wasapi2_can_process_loopback (void);
WAVEFORMATEX * gst_wasapi2_get_default_mix_format (void);
G_END_DECLS
#endif /* __GST_WASAPI_UTIL_H__ */