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62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
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/* GStreamer openaptx audio plugin
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*
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* Copyright (C) 2020 Igor V. Kovalenko <igor.v.kovalenko@gmail.com>
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* Copyright (C) 2020 Thomas Weißschuh <thomas@t-8ch.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_OPENAPTX_PLUGIN_H__
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#define __GST_OPENAPTX_PLUGIN_H__
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#include <glib.h>
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#define APTX_HD_DEFAULT 1
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#define APTX_AUTOSYNC_DEFAULT TRUE
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#define APTX_LATENCY_SAMPLES 90
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/* always stereo */
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#define APTX_NUM_CHANNELS 2
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/* always S24LE */
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#define APTX_SAMPLE_SIZE 3
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/* always 4 samples per channel*/
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#define APTX_SAMPLES_PER_CHANNEL 4
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/* always 4 stereo samples */
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#define APTX_SAMPLES_PER_FRAME (APTX_SAMPLES_PER_CHANNEL * APTX_NUM_CHANNELS)
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/* fixed encoded frame size hd=0: LLRR, hd=1: LLLRRR */
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#define APTX_FRAME_SIZE (2 * APTX_NUM_CHANNELS)
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#define APTX_HD_FRAME_SIZE (3 * APTX_NUM_CHANNELS)
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/* while finishing encoding, up to 92 frames will be produced */
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#define APTX_FINISH_FRAMES 92
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static inline const char* aptx_name(gboolean hd)
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{
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return hd ? "aptX-HD" : "aptX";
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}
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/* fixed encoded frame size hd=FALSE: LLRR, hd=TRUE: LLLRRR */
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static inline gsize aptx_frame_size(gboolean hd)
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{
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return hd ? APTX_HD_FRAME_SIZE : APTX_FRAME_SIZE;
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}
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#endif /* __GST_OPENAPTX_PLUGIN_H__ */
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