work in progress which eventually will enable the user to configure dsp processor on the fly using an on device http server.
first try and possible fix for #22
Signed-off-by: Karl Osterseher <karli_o@gmx.at>
dsp processor now will process smaller chunks of audio at a time and loop over the audio data array
which results in a much smaller RAM usage but probably longer execution times
of IIR filters.
Signed-off-by: Karl Osterseher <karli_o@gmx.at>
o wait max. 200ms and try to allocate memory every 1 ms
- set sync task to max priority and http task to (max priority - 1)
- mute audio if a hard resync happens to prevent clicks and other audible distortions
- reduce LWIP buffer sizes
Signed-off-by: Karl Osterseher <karli_o@gmx.at>
- instead of storing chunk duration in ms store the frame count
and do calculations based on that
- add updated snapserver.conf for reference (#17)
- some code clean up
- move Kconfig entries to correct place
- remove unnecessary Kconfig entries
- add necessary dependencies in Kconfig files
Signed-off-by: Karl Osterseher <karli_o@gmx.at>
- change some function return values from int8_t to int32_t
- improve syncing
o try to mimic original algorithm used by badaix
- latency_buffer_full() call in player sporadically returns negative value
which led to a unnecessary vTaskDelay --> resolved
- use esp_timer_get_time() instead of gettimeofday() for timestamping
- enable IRAM optimazations for WIFI
- decrease WIFI RX buffers
Signed-off-by: Karl Osterseher <karli_o@gmx.at>
- disable shortMedianFilter
- decrease control loop's calls to adjust_apll()
- increase size of latencyMedianFilterLong
Signed-off-by: Karl Osterseher <karli_o@gmx.at>
o configurable through CHNK_CTRL_CNT
- move time sync messaging to timer callback so it will keep going to send and receive them as long as we are connected to snapserver
- change task priorities and core IDs of tasks
Signed-off-by: Karl Osterseher <karli_o@gmx.at>
- increase DMA buffer size from 1 chunk to 3 chunks settable through source code Macro CHNK_CTRL_CNT
- activate OTA server
Signed-off-by: Karl Osterseher <karli_o@gmx.at>
o copy component audio_board from ADF and create custom component from it
o copy component audio_hal from ADF and create custom component from it
o copy component audio_sal from ADF and create custom component from it
o copy component esp_peripherals from ADF and create custom component from it
- add fLaC support through xiph's original repository as a git module
- run player_task on core 1 with max priority
- create/destroy chunk queue as required automatically
- use mutex to access snapcast config and communicate this change by queue with size 1
- increase buffers for WIFI and LWIP in sdkconfig for NO_SPIRAM config
- add some more debug output
- detect snapcast configuration and init everything accordingly, e.g sample rate, chunk duration, ...
o calculate apll predefines in dependence of sample rate
o communicate these settings to interested parties
- remove typos
- minimize RAM usage of all components
- use both IRAM and DRAM in player component so we can buffer up to 1s on modules without SPI RAM
- support fragemented pcm chunks so we can use all available RAM if there isn't a big enough block available but still enough HEAP
- reinclude all components from jorgen's master branch
- add custom i2s driver to get a precise timing of initial sync
- change wrong usage of esp_timer for latency measurement of snapcast protocol
- add player component
