diff options
Diffstat (limited to 'modules/usbaudio/alsa_device_proxy.c')
| -rw-r--r-- | modules/usbaudio/alsa_device_proxy.c | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/modules/usbaudio/alsa_device_proxy.c b/modules/usbaudio/alsa_device_proxy.c deleted file mode 100644 index 676f288..0000000 --- a/modules/usbaudio/alsa_device_proxy.c +++ /dev/null @@ -1,155 +0,0 @@ -/* - * 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_device_proxy" -/*#define LOG_NDEBUG 0*/ -/*#define LOG_PCM_PARAMS 0*/ - -#include <log/log.h> - -#include <errno.h> - -#include "alsa_device_proxy.h" - -#include "logging.h" - -#define DEFAULT_PERIOD_SIZE 1024 -#define DEFAULT_PERIOD_COUNT 2 - -void proxy_prepare(alsa_device_proxy * proxy, alsa_device_profile* profile, - struct pcm_config * config) -{ - ALOGV("proxy_prepare()"); - - proxy->profile = profile; - -#ifdef LOG_PCM_PARAMS - log_pcm_config(config, "proxy_setup()"); -#endif - - proxy->alsa_config.format = - config->format != PCM_FORMAT_INVALID && profile_is_format_valid(profile, config->format) - ? config->format : profile->default_config.format; - proxy->alsa_config.rate = - config->rate != 0 && profile_is_sample_rate_valid(profile, config->rate) - ? config->rate : profile->default_config.rate; - proxy->alsa_config.channels = - config->channels != 0 && profile_is_channel_count_valid(profile, config->channels) - ? config->channels : profile->default_config.channels; - - proxy->alsa_config.period_count = profile->default_config.period_count; - proxy->alsa_config.period_size = - profile_get_period_size(proxy->profile, proxy->alsa_config.rate); - - // Hack for USB accessory audio. - // Here we set the correct value for period_count if tinyalsa fails to get it from the - // f_audio_source driver. - if (proxy->alsa_config.period_count == 0) { - proxy->alsa_config.period_count = 4; - } - - proxy->pcm = NULL; -} - -int proxy_open(alsa_device_proxy * proxy) -{ - alsa_device_profile* profile = proxy->profile; - ALOGV("proxy_open(card:%d device:%d %s)", profile->card, profile->device, - profile->direction == PCM_OUT ? "PCM_OUT" : "PCM_IN"); - - proxy->pcm = pcm_open(profile->card, profile->device, profile->direction, &proxy->alsa_config); - if (proxy->pcm == NULL) { - return -ENOMEM; - } - - if (!pcm_is_ready(proxy->pcm)) { - ALOGE("[%s] proxy_open() pcm_open() failed: %s", LOG_TAG, pcm_get_error(proxy->pcm)); -#ifdef LOG_PCM_PARAMS - log_pcm_config(&proxy->alsa_config, "config"); -#endif - pcm_close(proxy->pcm); - proxy->pcm = NULL; - return -ENOMEM; - } - - return 0; -} - -void proxy_close(alsa_device_proxy * proxy) -{ - ALOGV("proxy_close() [pcm:%p]", proxy->pcm); - - if (proxy->pcm != NULL) { - pcm_close(proxy->pcm); - proxy->pcm = NULL; - } -} - -/* - * Sample Rate - */ -unsigned proxy_get_sample_rate(const alsa_device_proxy * proxy) -{ - return proxy->alsa_config.rate; -} - -/* - * Format - */ -enum pcm_format proxy_get_format(const alsa_device_proxy * proxy) -{ - return proxy->alsa_config.format; -} - -/* - * Channel Count - */ -unsigned proxy_get_channel_count(const alsa_device_proxy * proxy) -{ - return proxy->alsa_config.channels; -} - -/* - * Other - */ -unsigned int proxy_get_period_size(const alsa_device_proxy * proxy) -{ - return proxy->alsa_config.period_size; -} - -unsigned int proxy_get_period_count(const alsa_device_proxy * proxy) -{ - return proxy->alsa_config.period_count; -} - -unsigned proxy_get_latency(const alsa_device_proxy * proxy) -{ - return (proxy_get_period_size(proxy) * proxy_get_period_count(proxy) * 1000) - / proxy_get_sample_rate(proxy); -} - -/* - * I/O - */ -int proxy_write(const alsa_device_proxy * proxy, const void *data, unsigned int count) -{ - return pcm_write(proxy->pcm, data, count); -} - -int proxy_read(const alsa_device_proxy * proxy, void *data, unsigned int count) -{ - return pcm_read(proxy->pcm, data, count); -} |