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/*
* audio-hal
*
* Copyright (c) 2016 Samsung Electronics Co., Ltd. All rights reserved.
*
* 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.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include "tizen-audio-internal.h"
/* Audio latency */
static const char* AUDIO_LATENCY_LOW = "low";
static const char* AUDIO_LATENCY_MID = "mid";
static const char* AUDIO_LATENCY_HIGH = "high";
static const char* AUDIO_LATENCY_VOIP = "voip";
/* Latency msec */
static const unsigned int PERIOD_TIME_FOR_ULOW_LATENCY_MSEC = 20;
static const unsigned int PERIOD_TIME_FOR_LOW_LATENCY_MSEC = 25;
static const unsigned int PERIOD_TIME_FOR_MID_LATENCY_MSEC = 50;
static const unsigned int PERIOD_TIME_FOR_HIGH_LATENCY_MSEC = 75;
static const unsigned int PERIOD_TIME_FOR_UHIGH_LATENCY_MSEC = 150;
static const unsigned int PERIOD_TIME_FOR_VOIP_LATENCY_MSEC = 20;
static const uint32_t g_size_table[] = {
[AUDIO_SAMPLE_U8] = 1,
[AUDIO_SAMPLE_ULAW] = 1,
[AUDIO_SAMPLE_ALAW] = 1,
[AUDIO_SAMPLE_S16LE] = 2,
[AUDIO_SAMPLE_S16BE] = 2,
[AUDIO_SAMPLE_FLOAT32LE] = 4,
[AUDIO_SAMPLE_FLOAT32BE] = 4,
[AUDIO_SAMPLE_S32LE] = 4,
[AUDIO_SAMPLE_S32BE] = 4,
[AUDIO_SAMPLE_S24LE] = 3,
[AUDIO_SAMPLE_S24BE] = 3,
[AUDIO_SAMPLE_S24_32LE] = 4,
[AUDIO_SAMPLE_S24_32BE] = 4
};
static int __sample_spec_valid(uint32_t rate, audio_sample_format_t format, uint32_t channels)
{
if ((rate <= 0 ||
rate > (48000U*4U) ||
channels <= 0 ||
channels > 32U ||
format >= AUDIO_SAMPLE_MAX ||
format < AUDIO_SAMPLE_U8))
return 0;
AUDIO_LOG_ERROR("hal-latency - __sample_spec_valid() -> return true");
return 1;
}
static uint32_t __usec_to_bytes(uint64_t t, uint32_t rate, audio_sample_format_t format, uint32_t channels)
{
uint32_t ret = (uint32_t) (((t * rate) / 1000000ULL)) * (g_size_table[format] * channels);
AUDIO_LOG_DEBUG("hal-latency - return %d", ret);
return ret;
}
static uint32_t __sample_size(audio_sample_format_t format)
{
return g_size_table[format];
}
audio_return_t _audio_stream_init(audio_hal_t *ah)
{
AUDIO_RETURN_VAL_IF_FAIL(ah, AUDIO_ERR_PARAMETER);
return AUDIO_RET_OK;
}
audio_return_t _audio_stream_deinit(audio_hal_t *ah)
{
AUDIO_RETURN_VAL_IF_FAIL(ah, AUDIO_ERR_PARAMETER);
return AUDIO_RET_OK;
}
audio_return_t audio_notify_stream_connection_changed(void *audio_handle, audio_stream_info_t *info, uint32_t is_connected)
{
audio_return_t audio_ret = AUDIO_RET_OK;
audio_hal_t *ah = (audio_hal_t *)audio_handle;
AUDIO_RETURN_VAL_IF_FAIL(ah, AUDIO_ERR_PARAMETER);
AUDIO_RETURN_VAL_IF_FAIL(info, AUDIO_ERR_PARAMETER);
AUDIO_LOG_INFO("role:%s, direction:%u, idx:%u, is_connected:%d", info->role, info->direction, info->idx, is_connected);
return audio_ret;
}
audio_return_t audio_get_buffer_attr(void *audio_handle,
uint32_t direction,
const char *latency,
uint32_t samplerate,
audio_sample_format_t format,
uint32_t channels,
uint32_t *maxlength,
uint32_t *tlength,
uint32_t *prebuf,
uint32_t *minreq,
uint32_t *fragsize)
{
AUDIO_RETURN_VAL_IF_FAIL(audio_handle, AUDIO_ERR_PARAMETER);
AUDIO_RETURN_VAL_IF_FAIL(latency, AUDIO_ERR_PARAMETER);
AUDIO_RETURN_VAL_IF_FAIL(maxlength, AUDIO_ERR_PARAMETER);
AUDIO_RETURN_VAL_IF_FAIL(tlength, AUDIO_ERR_PARAMETER);
AUDIO_RETURN_VAL_IF_FAIL(prebuf, AUDIO_ERR_PARAMETER);
AUDIO_RETURN_VAL_IF_FAIL(minreq, AUDIO_ERR_PARAMETER);
AUDIO_RETURN_VAL_IF_FAIL(fragsize, AUDIO_ERR_PARAMETER);
AUDIO_LOG_DEBUG("hal-latency - audio_get_buffer_attr(direction:%d, latency:%s, samplerate:%d, format:%d, channels:%d)", direction, latency, samplerate, format, channels);
uint32_t period_time = 0,
sample_per_period = 0;
if (__sample_spec_valid(samplerate, format, channels) == 0) {
return AUDIO_ERR_PARAMETER;
}
if (direction == AUDIO_DIRECTION_IN) {
if (!strcmp(latency, AUDIO_LATENCY_LOW)) {
AUDIO_LOG_DEBUG("AUDIO_DIRECTION_IN, AUDIO_LATENCY_LOW");
period_time = PERIOD_TIME_FOR_LOW_LATENCY_MSEC;
sample_per_period = (samplerate * period_time) / 1000;
*prebuf = 0;
*minreq = -1;
*tlength = -1;
*maxlength = -1;
*fragsize = sample_per_period * __sample_size(format);
} else if (!strcmp(latency, AUDIO_LATENCY_MID)) {
AUDIO_LOG_DEBUG("AUDIO_DIRECTION_IN, AUDIO_LATENCY_MID");
period_time = PERIOD_TIME_FOR_MID_LATENCY_MSEC;
sample_per_period = (samplerate * period_time) / 1000;
*prebuf = 0;
*minreq = -1;
*tlength = -1;
*maxlength = -1;
*fragsize = sample_per_period * __sample_size(format);
} else if (!strcmp(latency, AUDIO_LATENCY_HIGH)) {
AUDIO_LOG_DEBUG("AUDIO_DIRECTION_IN, AUDIO_LATENCY_HIGH");
period_time = PERIOD_TIME_FOR_HIGH_LATENCY_MSEC;
sample_per_period = (samplerate * period_time) / 1000;
*prebuf = 0;
*minreq = -1;
*tlength = -1;
*maxlength = -1;
*fragsize = sample_per_period * __sample_size(format);
} else if (!strcmp(latency, AUDIO_LATENCY_VOIP)) {
AUDIO_LOG_DEBUG("AUDIO_DIRECTION_IN, AUDIO_LATENCY_VOIP");
period_time = PERIOD_TIME_FOR_VOIP_LATENCY_MSEC;
sample_per_period = (samplerate * period_time) / 1000;
*prebuf = 0;
*minreq = -1;
*tlength = -1;
*maxlength = -1;
*fragsize = sample_per_period * __sample_size(format);
} else {
AUDIO_LOG_ERROR("hal-latency - The latency(%s) is undefined", latency);
return AUDIO_ERR_UNDEFINED;
}
} else { /* AUDIO_DIRECTION_OUT */
if (!strcmp(latency, AUDIO_LATENCY_LOW)) {
AUDIO_LOG_DEBUG("AUDIO_DIRECTION_OUT, AUDIO_LATENCY_LOW");
period_time = PERIOD_TIME_FOR_LOW_LATENCY_MSEC;
sample_per_period = (samplerate * period_time) / 1000;
*prebuf = 0;
*minreq = -1;
*tlength = (samplerate / 10) * __sample_size(format) * channels; /* 100ms */
*maxlength = -1;
*fragsize = 0;
} else if (!strcmp(latency, AUDIO_LATENCY_MID)) {
AUDIO_LOG_DEBUG("AUDIO_DIRECTION_OUT, AUDIO_LATENCY_MID");
period_time = PERIOD_TIME_FOR_MID_LATENCY_MSEC;
sample_per_period = (samplerate * period_time) / 1000;
*prebuf = 0;
*minreq = -1;
*tlength = (uint32_t) __usec_to_bytes(200000, samplerate, format, channels);
*maxlength = -1;
*fragsize = -1;
} else if (!strcmp(latency, AUDIO_LATENCY_HIGH)) {
AUDIO_LOG_DEBUG("AUDIO_DIRECTION_OUT, AUDIO_LATENCY_HIGH");
period_time = PERIOD_TIME_FOR_HIGH_LATENCY_MSEC;
sample_per_period = (samplerate * period_time) / 1000;
*prebuf = 0;
*minreq = -1;
*tlength = (uint32_t) __usec_to_bytes(400000, samplerate, format, channels);
*maxlength = -1;
*fragsize = -1;
} else if (!strcmp(latency, AUDIO_LATENCY_VOIP)) {
AUDIO_LOG_DEBUG("AUDIO_DIRECTION_OUT, AUDIO_LATENCY_VOIP");
period_time = PERIOD_TIME_FOR_VOIP_LATENCY_MSEC;
sample_per_period = (samplerate * period_time) / 1000;
*prebuf = 0;
*minreq = __usec_to_bytes(20000, samplerate, format, channels);
*tlength = __usec_to_bytes(100000, samplerate, format, channels);
*maxlength = -1;
*fragsize = 0;
} else {
AUDIO_LOG_ERROR("hal-latency - The latency(%s) is undefined", latency);
return AUDIO_ERR_UNDEFINED;
}
}
AUDIO_LOG_INFO("hal-latency - return attr --> prebuf:%d, minreq:%d, tlength:%d, maxlength:%d, fragsize:%d", *prebuf, *minreq, *tlength, *maxlength, *fragsize);
return AUDIO_RET_OK;
}
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