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Commit b144b4b6 authored by Andy Hung's avatar Andy Hung
Browse files

lvmtest: Add mono mode for audio effect testing. 

This ensures all input audio channels are identical
by replicating the first audio channel of each
audio frame to the other channels.

Test: Use lvmtest with -M
Bug: 121331591
Change-Id: Ie85b6511397a97c9d0f3451328d128048c803ce5
parent 46f854ad

media/libeffects/lvm/tests/lvmtest.cpp

+14 −0
Original line number Diff line number Diff line
@@ -76,6 +76,7 @@ struct lvmConfigParams_t { 
  int              samplingFreq    = 44100;

  int              nrChannels      = 2;

  int              fChannels       = 2;

  bool             monoMode        = false;

  int              bassEffectLevel = 0;

  int              eqPresetLevel   = 0;

  int              frameLength     = 256;
@@ -98,6 +99,8 @@ void printUsage() { 
  printf("\n");

  printf("\n     -ch:<process_channels> (1 through 8)\n\n");

  printf("\n     -fch:<file_channels> (1 through 8)\n\n");

  printf("\n     -M");

  printf("\n           Mono mode (force all input audio channels to be identical)");

  printf("\n     -basslvl:<effect_level>");

  printf("\n           A value that ranges between 0 - 15 default 0");

  printf("\n");
@@ -612,6 +615,15 @@ int lvmMainProcess(lvmConfigParams_t *plvmConfigParams, FILE *finp, FILE *fout) 
    }

    memcpy_to_float_from_i16(floatIn.data(), in.data(), frameLength * channelCount);



    // Mono mode will replicate the first channel to all other channels.

    // This ensures all audio channels are identical. This is useful for testing

    // Bass Boost, which extracts a mono signal for processing.

    if (plvmConfigParams->monoMode && channelCount > 1) {

        for (int i = 0; i < frameLength; ++i) {

            auto *fp = &floatIn[i * channelCount];

            std::fill(fp + 1, fp + channelCount, *fp); // replicate ch 0

        }

    }

#if 1

    errCode = lvmExecute(floatIn.data(), floatOut.data(), &context, plvmConfigParams);

    if (errCode) {
@@ -677,6 +689,8 @@ int main(int argc, const char *argv[]) { 
             return -1;

           }

           lvmConfigParams.fChannels = fChannels;

    } else if (!strcmp(argv[i],"-M")) {

          lvmConfigParams.monoMode = true;

    } else if (!strncmp(argv[i], "-basslvl:", 9)) {

      const int bassEffectLevel = atoi(argv[i] + 9);

      if (bassEffectLevel > 15 || bassEffectLevel < 0) {