/* -*- c++ -*- */
/*
 * Copyright 2006,2013 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * GNU Radio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3, or (at your option)
 * any later version.
 *
 * GNU Radio is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "portaudio_impl.h"
#include <portaudio.h>
#include <string.h>

namespace gr {
namespace audio {

PaDeviceIndex pa_find_device_by_name(const char* name)
{
    int i;
    int numDevices;
    const PaDeviceInfo* pdi;
    int len = strlen(name);
    PaDeviceIndex result = paNoDevice;
    numDevices = Pa_GetDeviceCount();
    for (i = 0; i < numDevices; i++) {
        pdi = Pa_GetDeviceInfo(i);
        if (strncmp(name, pdi->name, len) == 0) {
            result = i;
            break;
        }
    }
    return result;
}

void print_devices()
{
    int numDevices, defaultDisplayed;
    const PaDeviceInfo* deviceInfo;

    numDevices = Pa_GetDeviceCount();
    if (numDevices < 0)
        return;

    printf("Number of devices found = %d\n", numDevices);

    for (int i = 0; i < numDevices; i++) {
        deviceInfo = Pa_GetDeviceInfo(i);
        printf("--------------------------------------- device #%d\n", i);
        /* Mark global and API specific default devices */
        defaultDisplayed = 0;
        if (i == Pa_GetDefaultInputDevice()) {
            printf("[ Default Input");
            defaultDisplayed = 1;
        } else if (i == Pa_GetHostApiInfo(deviceInfo->hostApi)->defaultInputDevice) {
            const PaHostApiInfo* hostInfo = Pa_GetHostApiInfo(deviceInfo->hostApi);
            printf("[ Default %s Input", hostInfo->name);
            defaultDisplayed = 1;
        }

        if (i == Pa_GetDefaultOutputDevice()) {
            printf((defaultDisplayed ? "," : "["));
            printf(" Default Output");
            defaultDisplayed = 1;
        } else if (i == Pa_GetHostApiInfo(deviceInfo->hostApi)->defaultOutputDevice) {
            const PaHostApiInfo* hostInfo = Pa_GetHostApiInfo(deviceInfo->hostApi);
            printf((defaultDisplayed ? "," : "["));
            printf(" Default %s Output", hostInfo->name);
            defaultDisplayed = 1;
        }
        if (defaultDisplayed)
            printf(" ]\n");

        /* print device info fields */
        printf("Name                        = %s\n", deviceInfo->name);
        printf("Host API                    = %s\n",
               Pa_GetHostApiInfo(deviceInfo->hostApi)->name);
        printf("Max inputs = %d", deviceInfo->maxInputChannels);
        printf(", Max outputs = %d\n", deviceInfo->maxOutputChannels);

        printf("Default low input latency   = %8.3f\n",
               deviceInfo->defaultLowInputLatency);
        printf("Default low output latency  = %8.3f\n",
               deviceInfo->defaultLowOutputLatency);
        printf("Default high input latency  = %8.3f\n",
               deviceInfo->defaultHighInputLatency);
        printf("Default high output latency = %8.3f\n",
               deviceInfo->defaultHighOutputLatency);
    }
}

} /* namespace audio */
} /* namespace gr */
