mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-23 10:11:08 +00:00
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
|
/* GStreamer openaptx audio plugin
|
||
|
|
*
|
||
|
|
* Copyright (C) 2020 Igor V. Kovalenko <igor.v.kovalenko@gmail.com>
|
||
|
|
* Copyright (C) 2020 Thomas Weißschuh <thomas@t-8ch.de>
|
||
|
|
*
|
||
|
|
* 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_OPENAPTX_PLUGIN_H__
|
||
|
|
#define __GST_OPENAPTX_PLUGIN_H__
|
||
|
|
|
||
|
|
#include <glib.h>
|
||
|
|
|
||
|
|
#define APTX_HD_DEFAULT 1
|
||
|
|
#define APTX_AUTOSYNC_DEFAULT TRUE
|
||
|
|
|
||
|
|
#define APTX_LATENCY_SAMPLES 90
|
||
|
|
|
||
|
|
/* always stereo */
|
||
|
|
#define APTX_NUM_CHANNELS 2
|
||
|
|
|
||
|
|
/* always S24LE */
|
||
|
|
#define APTX_SAMPLE_SIZE 3
|
||
|
|
|
||
|
|
/* always 4 samples per channel*/
|
||
|
|
#define APTX_SAMPLES_PER_CHANNEL 4
|
||
|
|
|
||
|
|
/* always 4 stereo samples */
|
||
|
|
#define APTX_SAMPLES_PER_FRAME (APTX_SAMPLES_PER_CHANNEL * APTX_NUM_CHANNELS)
|
||
|
|
|
||
|
|
/* fixed encoded frame size hd=0: LLRR, hd=1: LLLRRR */
|
||
|
|
#define APTX_FRAME_SIZE (2 * APTX_NUM_CHANNELS)
|
||
|
|
#define APTX_HD_FRAME_SIZE (3 * APTX_NUM_CHANNELS)
|
||
|
|
|
||
|
|
/* while finishing encoding, up to 92 frames will be produced */
|
||
|
|
#define APTX_FINISH_FRAMES 92
|
||
|
|
|
||
|
|
static inline const char* aptx_name(gboolean hd)
|
||
|
|
{
|
||
|
|
return hd ? "aptX-HD" : "aptX";
|
||
|
|
}
|
||
|
|
|
||
|
|
/* fixed encoded frame size hd=FALSE: LLRR, hd=TRUE: LLLRRR */
|
||
|
|
static inline gsize aptx_frame_size(gboolean hd)
|
||
|
|
{
|
||
|
|
return hd ? APTX_HD_FRAME_SIZE : APTX_FRAME_SIZE;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* __GST_OPENAPTX_PLUGIN_H__ */
|