C++ (Cpp) alsa_pcm_writeiの例

コード例 #1

ファイル: drv_alsa.c プロジェクト: OS2World/LIB-SDL-2014

static void ALSA_Update(void)
{
	int err;

	if (!enabled) return;

	if (bytes_written == 0 || bytes_played == bytes_written) {
		bytes_written = VC_WriteBytes(audiobuffer,period_size * global_frame_size);
		bytes_played = 0;
	}

	while (bytes_played < bytes_written)
	{
		err = alsa_pcm_writei(pcm_h, &audiobuffer[bytes_played], (bytes_written - bytes_played) / global_frame_size);
		if (err == -EAGAIN)
			continue;
		if (err < 0) {
			if ((err = xrun_recovery(pcm_h, err)) < 0) {
				_mm_errno = MMERR_ALSA_PCM_RECOVER;
				enabled = 0;
				dbgprint(stderr, "Write error: %s\n", alsa_strerror(err));
			}
			break;
		}
		bytes_played += err * global_frame_size;
	}
}

コード例 #2

ファイル: drv_alsa.c プロジェクト: LighFusion/surreal

static void ALSA_Update(void)
{
    int err;

    {
        if (bytes_written == 0 || bytes_played == bytes_written)
        {
            bytes_written = VC_WriteBytes(audiobuffer,buffer_size_in_frames * global_frame_size);
            bytes_played = 0;
        }

        while (bytes_played < bytes_written)
        {
            err = alsa_pcm_writei(pcm_h, &audiobuffer[bytes_played], (bytes_written - bytes_played) / global_frame_size);
            if (err == -EAGAIN)
            {
                continue;
            }
            if (err < 0) {
                if ((err = xrun_recovery(pcm_h, err)) < 0) {
                    printf("Write error: %s\n", alsa_strerror(err));
                    exit(-1);
                }
                break;
            }
            bytes_played += err * global_frame_size;
        }
    }
}