please make aplugin for Silabs FM RDS USB Radio

[AL9001]

When the GUI is first launched, it begins by looking for a USB FM Radio device. Once a device is found, it is
opened up as a USB Audio Device for audio streaming and as a HID device for FM Tuner control. In addition, the
default WAV output device is opened to playback the audio stream.
Audio Stream—The host application uses a circular buffer of 20 32 kB blocks to accept audio from the USB FM
Radio device. Initially, 19 of the buffers are filled with audio data. Next, this data is sent to the WAV output device,
and as streaming continues, pointers to the first free block and first playable block are incremented around the
circular buffer to provide a constant and seamless flow of audio

This is from radio's manual.... It create a USB sound card, via HID it controls tuning and others.

Bye,
AL

[David]

Originally Posted by AL9001

This is from radio's manual.... It create a USB sound card, via HID it controls tuning and others.

Bye,
AL

you need to find a way to mute this audio device...

david

[liquefact]

Originally Posted by AL9001

This is from radio's manual.... It create a USB sound card, via HID it controls tuning and others.

Bye,
AL

I want to summarize what i understood from this;

How radiator works?

A.
1. Silabs Audio Device (virtual) is created to get the audio from USB Radio.
2. Silabs HID device is created to control USB Radio by Radiator (11).
3. As both input and output channels are open, the audio coming from USB Audio Device is routed automatically by Default Audio Device (2).

B.
1. Silabs Audio Device (virtual) is created to get the audio from USB Radio.
2. Silabs HID device is created to control USB Radio by Radiator (11).
3. Radiator DLL and Radiator fetches the audio stream (1) and routes it to default playback channel (3).

How Centrafuse works with Radiator:

1. Centrafuse creates Radiator (10).
2. Radiator fetches the audio stream (1) and routes it to Centrafuse (4).
3. Centrafuse closes Radiator wave output (2 or 3 depending on the answer of "How Radiator Works?" question) and playbacks the radio audio by Default Audio Device (5).

If A is true and the audio is carried by using line (2), how shall i mute it as on the Default Audio Device output channels page, the "USB Line In" is not listed? The Silabs Application that i downloaded from web site has a volume control on it but it controls Default Audio Device Wave Out. So if you mute Radio, you mute everything that is played on the system.

Is my understanding right? Especially the underlined sentence. If yes, there is no way to mute the line (2) as there is no "Usb Audio Line In" channel in the output channels. So i guess there are two ways for a solution.

1. Modify Radio plugin of Centrafuse so that there will be an option to not buffer and playback the sound (cancel route 5), so that the audio will be played back by (2) or (3). The recording (buffering) of radio is not important for me, and i've never used it till now.
2. In the Radiator DLL of Silabs, paths (2) or (3) will be muted somehow, yet i have no idea how to do that. But i'm examining the code.
3. Create an application using this DLL and embed it into CF.
4. Create a CF plugin that uses this DLL but does not have recording feature.

I'm looking for your opinions.

Thanks.

[David]

Originally Posted by liquefact

I want to summarize what i understood from this;

How radiator works?

A.
1. Silabs Audio Device (virtual) is created to get the audio from USB Radio.
2. Silabs HID device is created to control USB Radio by Radiator (11).
3. As both input and output channels are open, the audio coming from USB Audio Device is routed automatically by Default Audio Device (2).

B.
1. Silabs Audio Device (virtual) is created to get the audio from USB Radio.
2. Silabs HID device is created to control USB Radio by Radiator (11).
3. Radiator DLL and Radiator fetches the audio stream (1) and routes it to default playback channel (3).

How Centrafuse works with Radiator:

1. Centrafuse creates Radiator (10).
2. Radiator fetches the audio stream (1) and routes it to Centrafuse (4).
3. Centrafuse closes Radiator wave output (2 or 3 depending on the answer of "How Radiator Works?" question) and playbacks the radio audio by Default Audio Device (5).

If A is true and the audio is carried by using line (2), how shall i mute it as on the Default Audio Device output channels page, the "USB Line In" is not listed? The Silabs Application that i downloaded from web site has a volume control on it but it controls Default Audio Device Wave Out. So if you mute Radio, you mute everything that is played on the system.

Is my understanding right? Especially the underlined sentence. If yes, there is no way to mute the line (2) as there is no "Usb Audio Line In" channel in the output channels. So i guess there are two ways for a solution.

1. Modify Radio plugin of Centrafuse so that there will be an option to not buffer and playback the sound (cancel route 5), so that the audio will be played back by (2) or (3). The recording (buffering) of radio is not important for me, and i've never used it till now.
2. In the Radiator DLL of Silabs, paths (2) or (3) will be muted somehow, yet i have no idea how to do that. But i'm examining the code.
3. Create an application using this DLL and embed it into CF.
4. Create a CF plugin that uses this DLL but does not have recording feature.

I'm looking for your opinions.

Thanks.

Set no line input as none when setting up radio and it should not try to buffer anything, but still allow control of the radio...

david

[liquefact]

Originally Posted by David

Set no line input as none when setting up radio and it should not try to buffer anything, but still allow control of the radio...

david

This didn't work David. Is there any other way in CF to disable buffering? Can you make buffering and recording an option and set it on by default, so that users of Silabs can turn it off?

[David]

I will make it an option...

david

[liquefact]

Thank you David.

[AndreD]

what's the status here ?
- will/does this device work with CF now ?

[David]

not currently... the next radio that will be added is the HQCT, then I plan to look into this radio...

david

[zumka]

HI guys there is the problem with silabs usb radio and latest CF when radio buffer option is selected I can hear echo, when buffer is off then there is no echo but radio would not start automatically after CF restart and visualization is not working. Muting line in doesn't change anything.