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/*
* Copyright (C) 2014 The Android Open Source Project
*
* 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.
*/
#define LOG_TAG "alsa_logging"
/*#define LOG_NDEBUG 0*/
#include <string.h>
#include <log/log.h>
#include "include/alsa_logging.h"
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
/*
* Logging
*/
void log_pcm_mask(const char* mask_name, struct pcm_mask* mask)
{
const size_t num_slots = ARRAY_SIZE(mask->bits);
const size_t bits_per_slot = (sizeof(mask->bits[0]) * 8);
const size_t chars_per_slot = (bits_per_slot + 1); /* comma */
const size_t BUFF_SIZE =
(num_slots * chars_per_slot + 2 + 1); /* brackets and null-terminator */
char buff[BUFF_SIZE];
buff[0] = '\0';
size_t slot_index, bit_index;
strcat(buff, "[");
for (slot_index = 0; slot_index < num_slots; slot_index++) {
unsigned bit_mask = 1;
for (bit_index = 0; bit_index < bits_per_slot; bit_index++) {
strcat(buff, (mask->bits[slot_index] & bit_mask) != 0 ? "1" : "0");
bit_mask <<= 1;
}
if (slot_index < num_slots - 1) {
strcat(buff, ",");
}
}
strcat(buff, "]");
ALOGV("%s: mask:%s", mask_name, buff);
}
void log_pcm_params(struct pcm_params * alsa_hw_params)
{
ALOGV("usb:audio_hw - PCM_PARAM_SAMPLE_BITS min:%u, max:%u",
pcm_params_get_min(alsa_hw_params, PCM_PARAM_SAMPLE_BITS),
pcm_params_get_max(alsa_hw_params, PCM_PARAM_SAMPLE_BITS));
ALOGV("usb:audio_hw - PCM_PARAM_FRAME_BITS min:%u, max:%u",
pcm_params_get_min(alsa_hw_params, PCM_PARAM_FRAME_BITS),
pcm_params_get_max(alsa_hw_params, PCM_PARAM_FRAME_BITS));
log_pcm_mask("PCM_PARAM_FORMAT",
pcm_params_get_mask(alsa_hw_params, PCM_PARAM_FORMAT));
log_pcm_mask("PCM_PARAM_SUBFORMAT",
pcm_params_get_mask(alsa_hw_params, PCM_PARAM_SUBFORMAT));
ALOGV("usb:audio_hw - PCM_PARAM_CHANNELS min:%u, max:%u",
pcm_params_get_min(alsa_hw_params, PCM_PARAM_CHANNELS),
pcm_params_get_max(alsa_hw_params, PCM_PARAM_CHANNELS));
ALOGV("usb:audio_hw - PCM_PARAM_RATE min:%u, max:%u",
pcm_params_get_min(alsa_hw_params, PCM_PARAM_RATE),
pcm_params_get_max(alsa_hw_params, PCM_PARAM_RATE));
ALOGV("usb:audio_hw - PCM_PARAM_PERIOD_TIME min:%u, max:%u",
pcm_params_get_min(alsa_hw_params, PCM_PARAM_PERIOD_TIME),
pcm_params_get_max(alsa_hw_params, PCM_PARAM_PERIOD_TIME));
ALOGV("usb:audio_hw - PCM_PARAM_PERIOD_SIZE min:%u, max:%u",
pcm_params_get_min(alsa_hw_params, PCM_PARAM_PERIOD_SIZE),
pcm_params_get_max(alsa_hw_params, PCM_PARAM_PERIOD_SIZE));
ALOGV("usb:audio_hw - PCM_PARAM_PERIOD_BYTES min:%u, max:%u",
pcm_params_get_min(alsa_hw_params, PCM_PARAM_PERIOD_BYTES),
pcm_params_get_max(alsa_hw_params, PCM_PARAM_PERIOD_BYTES));
ALOGV("usb:audio_hw - PCM_PARAM_PERIODS min:%u, max:%u",
pcm_params_get_min(alsa_hw_params, PCM_PARAM_PERIODS),
pcm_params_get_max(alsa_hw_params, PCM_PARAM_PERIODS));
ALOGV("usb:audio_hw - PCM_PARAM_BUFFER_TIME min:%u, max:%u",
pcm_params_get_min(alsa_hw_params, PCM_PARAM_BUFFER_TIME),
pcm_params_get_max(alsa_hw_params, PCM_PARAM_BUFFER_TIME));
ALOGV("usb:audio_hw - PCM_PARAM_BUFFER_SIZE min:%u, max:%u",
pcm_params_get_min(alsa_hw_params, PCM_PARAM_BUFFER_SIZE),
pcm_params_get_max(alsa_hw_params, PCM_PARAM_BUFFER_SIZE));
ALOGV("usb:audio_hw - PCM_PARAM_BUFFER_BYTES min:%u, max:%u",
pcm_params_get_min(alsa_hw_params, PCM_PARAM_BUFFER_BYTES),
pcm_params_get_max(alsa_hw_params, PCM_PARAM_BUFFER_BYTES));
ALOGV("usb:audio_hw - PCM_PARAM_TICK_TIME min:%u, max:%u",
pcm_params_get_min(alsa_hw_params, PCM_PARAM_TICK_TIME),
pcm_params_get_max(alsa_hw_params, PCM_PARAM_TICK_TIME));
}
void log_pcm_config(struct pcm_config * config, const char* label) {
ALOGV("log_pcm_config() - %s", label);
ALOGV(" channels:%d", config->channels);
ALOGV(" rate:%d", config->rate);
ALOGV(" period_size:%d", config->period_size);
ALOGV(" period_count:%d", config->period_count);
ALOGV(" format:%d", config->format);
#if 0
/* Values to use for the ALSA start, stop and silence thresholds. Setting
* any one of these values to 0 will cause the default tinyalsa values to be
* used instead. Tinyalsa defaults are as follows.
*
* start_threshold : period_count * period_size
* stop_threshold : period_count * period_size
* silence_threshold : 0
*/
unsigned int start_threshold;
unsigned int stop_threshold;
unsigned int silence_threshold;
/* Minimum number of frames available before pcm_mmap_write() will actually
* write into the kernel buffer. Only used if the stream is opened in mmap mode
* (pcm_open() called with PCM_MMAP flag set). Use 0 for default.
*/
int avail_min;
#endif
}
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