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/*
* Copyright (C) 2011 The Android Open Source Project
* Copyright (C) 2013 Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __COMPAT_H__
#define __COMPAT_H__
#include <system/audio.h>
#ifndef ALOGE
#define ALOGE LOGE
#endif
#ifndef ALOGI
#define ALOGI LOGI
#endif
#ifndef ALOGD
#define ALOGD LOGD
#endif
#ifndef ALOGV
#define ALOGV LOGV
#endif
#ifndef audio_channel_mask_t
typedef uint32_t audio_channel_mask_t;
#endif
#ifndef audio_channel_mask_from_count
/* Derive a channel mask from a channel count.
* This is to be used when the content channel mask is unknown. The 1, 2, 4, 5, 6, 7 and 8 channel
* cases are mapped to the standard game/home-theater layouts, but note that 4 is mapped to quad,
* and not stereo + FC + mono surround. A channel count of 3 is arbitrarily mapped to stereo + FC
* for continuity with stereo.
* Returns the matching channel mask, or 0 if the number of channels exceeds that of the
* configurations for which a default channel mask is defined.
*/
static inline audio_channel_mask_t audio_channel_mask_from_count(uint32_t channel_count)
{
switch(channel_count) {
case 1:
return AUDIO_CHANNEL_OUT_MONO;
case 2:
return AUDIO_CHANNEL_OUT_STEREO;
case 3:
return (AUDIO_CHANNEL_OUT_STEREO | AUDIO_CHANNEL_OUT_FRONT_CENTER);
case 4: // 4.0
return AUDIO_CHANNEL_OUT_QUAD;
case 5: // 5.0
return (AUDIO_CHANNEL_OUT_QUAD | AUDIO_CHANNEL_OUT_FRONT_CENTER);
case 6: // 5.1
return AUDIO_CHANNEL_OUT_5POINT1;
case 7: // 6.1
return (AUDIO_CHANNEL_OUT_5POINT1 | AUDIO_CHANNEL_OUT_BACK_CENTER);
case 8:
return AUDIO_CHANNEL_OUT_7POINT1;
default:
return 0;
}
}
#endif
#ifndef channel_config_s
// EFFECT_FEATURE_AUX_CHANNELS feature configuration descriptor. Describe a combinatio
// of main and auxiliary channels supported
typedef struct channel_config_s {
uint32_t main_channels; // channel mask for main channels
uint32_t aux_channels; // channel mask for auxiliary channels
} channel_config_t;
#endif
#endif
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