Merge "aaudio: add support for FLOAT pcm"

    audio_format_t audioFormat = getFormat();

    // FLOAT is not directly supported by the HAL so ask for a 32-bit.

    if (audioFormat == AUDIO_FORMAT_PCM_FLOAT) {

        // TODO remove these logs when finished debugging.

        ALOGD("%s() change format from %d to 32_BIT", __func__, audioFormat);

        audioFormat = AUDIO_FORMAT_PCM_32_BIT;

    }

    result = openWithFormat(audioFormat);

    if (result == AAUDIO_OK) return result;

    if (result == AAUDIO_ERROR_UNAVAILABLE && audioFormat == AUDIO_FORMAT_PCM_FLOAT) {

        ALOGD("%s() FLOAT failed, perhaps due to format. Try again with 32_BIT", __func__);

        audioFormat = AUDIO_FORMAT_PCM_32_BIT;

        result = openWithFormat(audioFormat);

    }

    if (result == AAUDIO_OK) return result;

    if (result == AAUDIO_ERROR_UNAVAILABLE && audioFormat == AUDIO_FORMAT_PCM_32_BIT) {