C++ (Cpp) profile_get_period_size 예제들

예제 #1

파일: alsa_device_proxy.c 프로젝트: AOSP-JF/platform_hardware_libhardware

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;
}

예제 #2

파일: alsa_device_proxy.c 프로젝트: AOSP-JF-MM/platform_system_media

void proxy_prepare(alsa_device_proxy * proxy, alsa_device_profile* profile,
                   struct pcm_config * config)
{
    ALOGV("proxy_prepare(c:%d, d:%d)", profile->card, profile->device);

    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;
    // config format should be checked earlier against profile.
    if (config->format >= 0 && (size_t)config->format < ARRAY_SIZE(format_byte_size_map)) {
        proxy->frame_size = format_byte_size_map[config->format] * proxy->alsa_config.channels;
    } else {
        proxy->frame_size = 1;
    }
}