C++ (Cpp) snd_seq_device_register_driver示例

示例#1

文件： opl3_seq.c 项目： 274914765/C

static int __init alsa_opl3_seq_init(void)
{
    static struct snd_seq_dev_ops ops =
    {
        snd_opl3_seq_new_device,
        snd_opl3_seq_delete_device
    };

    return snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_OPL3, &ops,
                          sizeof(struct snd_opl3 *));
}

示例#2

文件： seq_midi.c 项目： 12rafael/jellytimekernel

static int __init alsa_seq_midi_init(void)
{
	static struct snd_seq_dev_ops ops = {
		snd_seq_midisynth_register_port,
		snd_seq_midisynth_unregister_port,
	};
	memset(&synths, 0, sizeof(synths));
	snd_seq_autoload_lock();
	snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_MIDISYNTH, &ops, 0);
	snd_seq_autoload_unlock();
	return 0;
}

示例#3

文件： seq_oss.c 项目： jetonbacaj/SomeKernel_920P_OL1

static int __init alsa_seq_oss_init(void)
{
    int rc;
    static struct snd_seq_dev_ops ops = {
        snd_seq_oss_synth_register,
        snd_seq_oss_synth_unregister,
    };

    snd_seq_autoload_lock();
    if ((rc = register_device()) < 0)
        goto error;
    if ((rc = register_proc()) < 0) {
        unregister_device();
        goto error;
    }
    if ((rc = snd_seq_oss_create_client()) < 0) {
        unregister_proc();
        unregister_device();
        goto error;
    }

    if ((rc = snd_seq_device_register_driver(SNDRV_SEQ_DEV_ID_OSS, &ops,
              sizeof(struct snd_seq_oss_reg))) < 0) {
        snd_seq_oss_delete_client();
        unregister_proc();
        unregister_device();
        goto error;
    }

    /* success */
    snd_seq_oss_synth_init();

error:
    snd_seq_autoload_unlock();
    return rc;
}