pipeline_loop_playback_without_gap example is not fully continuous (AUD-4761)

alanmosely commented 1 year ago

Module or chip used: ESP32-S3-WROOM-1
IDF version: v4.4.4
ADF version: v2.5-1-g6046621
Build system: idf.py
Compiler version: 8.4.0
Operating system: Windows
Environment type: PowerShell
Using an IDE?: VS Code
Power supply: USB

Problem Description

I am running https://github.com/espressif/esp-adf/tree/master/examples/player/pipeline_loop_playback_without_gap on my custom board, playing ogg and mp3 files from an external flash. There are no errors and the example works as expected except for a very small gap when updating the ring buffer and running the pipeline. Would it be possible to have no gap at all?

Expected Behavior

On an audio file that has been made to loop seamlessly, support completely seamless looping with no noticeable pause in audio at all

Actual Behavior

A very small pause occurs

Steps to Reproduce

Use example with a continuous, looping sound, for example white noise

Debug Logs

I (2758) audio_player:        - Create fatfs_stream_reader[0] to read data from sdcard
I (2778) audio_player:        - Create music_decoder[0]
I (2778) AUDIO_PIPELINE: link el->rb, el:0x3de182fc, tag:file, rb:0x3de185d4
I (2778) audio_player:        - Create fatfs_stream_reader[1] to read data from sdcard
I (2798) audio_player:        - Create music_decoder[1]
I (2798) AUDIO_PIPELINE: link el->rb, el:0x3de1a640, tag:file, rb:0x3de1a918
I (2818) audio_player:        - Create i2s_stream_writer to write data to codec chip
W (2818) I2S: APLL not supported on current chip, use I2S_CLK_D2CLK as default clock source
I (2838) I2S: DMA Malloc info, datalen=blocksize=1200, dma_buf_count=3
I (2838) I2S: DMA Malloc info, datalen=blocksize=1200, dma_buf_count=3
I (2838) audio_player: [ 4 ] Set up event listener
I (2838) audio_player:        - Listening event from all elements of pipeline
I (2868) audio_player: [ 5 ] Create the ringbuf and connect decoder to i2s
I (2868) audio_player: [ 6 ] Start pipeline_input and i2s_stream_writer
I (2888) audio_player: volume set to: 43
I (2898) AUDIO_ELEMENT: [file-0x3de182fc] Element task created
I (2898) AUDIO_THREAD: The dec task allocate stack on external memory
I (2908) AUDIO_ELEMENT: [dec-0x3de18460] Element task created
I (2908) AUDIO_PIPELINE: Func:audio_pipeline_run, Line:359, MEM Total:2063455 Bytes, Inter:104615 Bytes, Dram:104615 Bytes
I (2928) AUDIO_ELEMENT: [file] AEL_MSG_CMD_RESUME,state:1
I (2928) FATFS_STREAM: File size: 296371 byte, file position: 0
I (2938) AUDIO_ELEMENT: [dec] AEL_MSG_CMD_RESUME,state:1
I (2948) VORBIS_DECODER: VORBIS codec
I (2948) CODEC_ELEMENT_HELPER: The element is 0x3de18460. The reserve data 2 is 0x0.
I (2958) VORBIS_DECODER: a new song playing
I (2958) VORBIS_DECODER: a new songI (3038) AUDIO_ELEMENT: [iis-0x3de1ca48] Element task created
I (3038) AUDIO_ELEMENT: [iis] AEL_MSG_CMD_RESUME,state:1
I (3048) I2S_STREAM: AUDIO_STREAM_WRITER
I (3068) audio_player: [ 7 ] Listen for all pipeline events
I (3068) audio_player: [ * ] Receive music info from music_decoder[0], sample_rates=44100, bits=16, ch=1
I (3118) AUDIO_ELEMENT: [iis] AEL_MSG_CMD_PAUSE
W (3118) I2S: APLL not supported on current chip, use I2S_CLK_D2CLK as default clock source
W (3118) AUDIO_ELEMENT: [iis-0x3de1ca48] RESUME timeout
W (3118) AUDIO_ELEMENT: [iis-0x3de1ca48] RESUME timeout
I (3138) I2S_STREAM: AUDIO_STREAM_WRITER
W (12558) FATFS_STREAM: No more data, ret:0
I (12558) AUDIO_ELEMENT: IN-[file] AEL_IO_DONE,0
I (12718) AUDIO_ELEMENT: IN-[dec] AEL_IO_DONE,-2
I (12938) VORBIS_DECODER: Closed
I (12938) audio_player: [ * ] The Pipeline[0] has been finished. Switch to another one
I (12938) AUDIO_ELEMENT: [file-0x3de1a640] Element task created
I (12948) AUDIO_THREAD: The dec task allocate stack on external memory
I (12948) AUDIO_ELEMENT: [dec-0x3de1a7a4] Element task created
I (12948) AUDIO_PIPELINE: Func:audio_pipeline_run, Line:359, MEM Total:2039427 Bytes, Inter:98503 Bytes, Dram:98503 Bytes
I (12968) AUDIO_ELEMENT: [file] AEL_MSG_CMD_RESUME,state:1
I (12978) FATFS_STREAM: File size: 296371 byte, file position: 0
I (12988) AUDIO_ELEMENT: [dec] AEL_MSG_CMD_RESUME,state:1
I) AUDIO) VORBIS_DECODER: VORBIS codec
I) AUDIO) VORBIS_DECODER: VORBIS codec
I (12988) CODEC_ELEMENT_HELPER: The element is 0x3de1a7a4. The reserve data 2 is 0x0.
W (12998) AUDIO_ELEMENT: [file] Element already stopped
I (12998) VORBIS_DECODER: a new song playing
W (13008) AUDIO_ELEMENT: [dec] Element already stopped

jason-mao commented 1 year ago

@alanmosely How long is the small gap? Can you provide an audio chart or a spectrum chart?

alanmosely commented 1 year ago

Sorry for wasting your time, it was an issue on my end.

espressif / esp-adf