977481 - Dump PCM data from AudioFlinger

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: Hardware, defect)

Description

[Wayne Chen [:xwaynec]]

1. Find AudioFlinger source code, Each project has different location.
   According Tarako, source code are in frameworks/base/services/audioflnger


2. Add some code to dump audio pcm data at AudioFlinger::MixerThread::threadLoop()

    // open file
    FILE *dump_file;
    dump_file = fopen(“data/audio_out.pcm", "a+b");
    if (!dump_file) {
      ALOGE("Failed to open data/audio_out.pcm");
    }

    // write data
    fwrite((uint8_t *)buffer, bytes, 1, dump_file);
      
    // close data
    fclose(dump_file);

3. After finished the capture scenario, use adb dump data to pc.

   i. adb pull data/audio_out.pcm ~/Desktop/audio_out.pcm

4. download “Audacity” and execute it

5. import pcm data to application

Comment 1

[BMO Automation]

Firefox OS is not being worked on