[gst-devel] Problem with flacdec and ismd_audio_sink

[Josep Torra]

On 12/8/10 10:35 AM, Raymond Frost wrote:
> 
> 
> Tim-Philipp Müller-2 wrote:
>>
>> On Tue, 2010-12-07 at 02:49 -0800, Raymond Frost wrote:
>>
>>> Im working on a intel CE4150 board with gstreamer
>>> and i have issues of extremely low volume whenever i use flacdec along
>>> with
>>> ismd_audio_sink. Basically my setup is
>>>
>>> filesrc ! queue ! flacdec ! audioconvert ! ismd_audio_sink
>>>
>>> i have no issues when using other combinations such as (snip)
>>
>> So what format is being negotiated between flacdec and your sink? (pass
>> -v to gst-launch)
>>
>> What if you use e.g.
>>
>>  ... ! flacdec ! audioconvert ! \
>>        audio/x-raw-int,width=16,depth=16,channels=2 ! \
>>        ismd_audio_sink 
>>
>> for example (try other combinations too, maybe the same as are used with
>> the other formats).
>>
>> Cheers
>>  -Tim
>>
>>
> 
> well,
> i have been trying something similar before,
> it goes something like the codes below,
> *note that I'm using C
> 
> 			audio_caps = gst_caps_new_simple("audio/x-raw-int",
> 			                                  "width",       G_TYPE_INT, 16,
> 			                                  "rate",        G_TYPE_INT, 48000,
> 			                                  "channels",    G_TYPE_INT, 2,
> 			                                  "endianness",  G_TYPE_INT, 1234,
> 			                                  "depth",       G_TYPE_INT, 24,
> 			                                  "signed",      G_TYPE_BOOLEAN, true,
> 			                                  NULL);
> 			g_assert(audio_caps);
> 			gst_pad_set_caps(audioconvert_src_pad, audio_caps);
> 			gst_caps_unref(audio_caps);
> 
> 
> 
> I run this before linking up the pipeline,
> and so far i have tried numerous setting combinations,
> so far i have no positive improvements yet.
> 
> so far only by replacing the audiosink to alsasink,
> i can get good volume with the same setting on all the other part of the
> pipeline.
> i guess this part of setting could be the only connection to this problem.
> 
Having depth > width doesn't make sense.

Try with 16 bits on both.

Cheers
 Josep