Hello,
In my project I want to mix MP3 audios with VoIP (not at the same time) with the codec. The board used is LyraT v4.3.
So after I realice that the read and write pipelines must be relinked (as the flexible_pipeline example shows) I implement the same steps used but with the filter / raw and I2S components.
Steps followed:
- Initialization:
1.- Init board
2.- Init I2S reader and writer -> register it into the pipelines
3.- Init filter and raw stream -> register it into the reader pipeline
4.- Init reader event and set it as a listener.
5.- Init filter and raw stream -> register it into the writer pipeline
6.- Init writer event and set it as a listener.
- Start process (reader)
1.- invoke audio_pipeline_breakup_elements to clean all elements (due to compatibility with MP3)
2.- Relink components: {"i2s_r", "filter_r", "raw_r"}
3.- Set listener
4.- Reset ringbuffer, elements and change state to AEL_STATE_INIT
5.- run and resume pipeline
- Start process (writer)
1.- invoke audio_pipeline_breakup_elements to clean all elements (due to compatibility with MP3)
2.- Relink components: "raw_w", "filter_w", "i2s_w"}
3.- Set listener
4.- Reset ringbuffer, elements and change state to AEL_STATE_INIT
5.- run and resume pipeline
- Read from microphone and reproduce it over the speaker
- Stop process (writer)
1.- pause element
2.- pause pipeline
- Stop process (reader)
1.- pause element
2.- pause pipeline
At this point i'm trying to reopen it from the start processes.
I got the microphone enable again but the speaker doesn't turned on again.
Have anyone any idea how it can be?
How to relink components from VoIP example
- shabtronic
- Posts: 49
- Joined: Sun Nov 03, 2019 1:33 pm
Re: How to relink components from VoIP example
HI
I had a few problems with this also, don't know if I'm doing it correctly - but this worked for me,
and I tried many different things.
Hope that helps!!
I had a few problems with this also, don't know if I'm doing it correctly - but this worked for me,
and I tried many different things.
Code: Select all
audio_pipeline_terminate(pipeline);
if (strstr(Mp3Files[Mp3Stack[Mp3StackPos]].c_str(), (const char*)".mp3"))
{
audio_decoder = mp3_decoder;
const char * boomer[]{ "FatReader", "mp3Decoder","DspOutput", "i2s-out" };
audio_pipeline_link(pipeline, boomer, 4);
SongExt = "MP3";
}
else
{
audio_decoder = flac_decoder;
const char * boomer[]{ "FatReader", "flacDecoder", "DspOutput","i2s-out" };
audio_pipeline_link(pipeline, boomer, 4);
SongExt = "FLC";
}
audio_pipeline_set_listener(pipeline, evt);
audio_element_set_uri(PlayFatStream, ("/sdcard" + filename).c_str());
audio_pipeline_run(pipeline);
audio_pipeline_resume(pipeline);
Re: How to relink components from VoIP example
Hello shabtronic, thanks so much for your reply.
From your answer I just to add some lines to make it work.
audio_pipeline_reset_ringbuffer(pipeline_audio_writer);
audio_pipeline_reset_elements(pipeline_audio_writer);
audio_pipeline_change_state(pipeline_audio_writer, AEL_STATE_INIT);
After this, there is no neeed to reset the module after all.
Thanks so much.
From your answer I just to add some lines to make it work.
audio_pipeline_reset_ringbuffer(pipeline_audio_writer);
audio_pipeline_reset_elements(pipeline_audio_writer);
audio_pipeline_change_state(pipeline_audio_writer, AEL_STATE_INIT);
After this, there is no neeed to reset the module after all.
Thanks so much.
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