libeffects: Added sample testbench for downmix module

// Build testbench for downmix module.

cc_test {

    name:"downmixtest",

    host_supported: false,

    proprietary: true,

    include_dirs: [

        "frameworks/av/media/libeffects/downmix",

    ],

    header_libs: [

        "libaudioeffects",

    ],

    shared_libs: [

        "libaudioutils",

        "libdownmix",

        "liblog",

    ],

    relative_install_path: "soundfx",

    srcs: [

        "downmixtest.cpp",

    ],

    cflags: [

        "-v",

        "-Werror",

        "-Wextra",

    ],

}

#!/bin/bash

#

#Run tests in this directory.

#

if [ -z "$ANDROID_BUILD_TOP" ]; then

    echo "Android build environment not set"

    exit -1

fi

#ensure we have mm

. $ANDROID_BUILD_TOP/build/envsetup.sh

mm -j

echo "waiting for device"

adb root && adb wait-for-device remount

#location of test files

testdir="/data/local/tmp/downmixtest"

fs_arr=(

    8000

    11025

    12000

    16000

    22050

    24000

    32000

    44100

    48000

    88200

    96000

    176400

    192000

)

echo "========================================"

echo "testing Downmix"

adb shell mkdir $testdir

adb push $ANDROID_BUILD_TOP/cts/tests/tests/media/res/raw/sinesweepraw.raw \

$testdir

adb push $OUT/testcases/downmixtest/arm64/downmixtest $testdir

#run the downmix test application for test.

for fs in ${fs_arr[*]}

do

    for f_ch in {1..8}

    do

        for ch_fmt in {0..4}

        do

            adb shell  LD_LIBRARY_PATH=/vendor/lib64/soundfx \

            $testdir/downmixtest $testdir/sinesweepraw.raw \

            $testdir/sinesweep_fmt_$((ch_fmt))_fch_$((f_ch))_$((fs)).raw \

            -ch_fmt:$ch_fmt -fch:$f_ch -fs:$fs

            # Implementation dependent test:

            # check that higher frequencies match 8 kHz result.

            if [ $fs != 8000 ]

            then

                adb shell cmp \

                $testdir/sinesweep_fmt_$((ch_fmt))_fch_$((f_ch))_8000.raw \

                $testdir/sinesweep_fmt_$((ch_fmt))_fch_$((f_ch))_$((fs)).raw

            fi

        done

    done

done

adb shell rm -r $testdir

/*

 * Copyright (C) 2011 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include <inttypes.h>

#include <stdlib.h>

#include <string.h>

#include <vector>

#include <audio_effects/effect_downmix.h>

#include <audio_utils/channels.h>

#include <audio_utils/primitives.h>

#include <log/log.h>

#include <system/audio.h>

#include "EffectDownmix.h"

#define FRAME_LENGTH 256

#define MAX_NUM_CHANNELS 8

struct downmix_cntxt_s {

  effect_descriptor_t desc;

  effect_handle_t handle;

  effect_config_t config;

  int numFileChannels;

  int numProcessChannels;

};

extern audio_effect_library_t AUDIO_EFFECT_LIBRARY_INFO_SYM;

void printUsage() {

  printf("\nUsage:");

  printf("\n     downmixtest <input_file> <out_file> [options]\n");

  printf("\nwhere,");

  printf("\n     <input_file>  is the input file name");

  printf("\n                  on which LVM effects are applied");

  printf("\n     <output_file> processed output file");

  printf("\n     and options are mentioned below");

  printf("\n");

  printf("\n      -h");

  printf("\n           Prints this usage information");

  printf("\n");

  printf("\n     -ch_fmt:<format_of_input_audio>");

  printf("\n         0:AUDIO_CHANNEL_OUT_7POINT1(default)");

  printf("\n         1:AUDIO_CHANNEL_OUT_5POINT1_SIDE");

  printf("\n         2:AUDIO_CHANNEL_OUT_5POINT1_BACK");

  printf("\n         3:AUDIO_CHANNEL_OUT_QUAD_SIDE");

  printf("\n         4:AUDIO_CHANNEL_OUT_QUAD_BACK");

  printf("\n");

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

  printf("\n");

}

int32_t DownmixDefaultConfig(effect_config_t *pConfig) {

  pConfig->inputCfg.accessMode = EFFECT_BUFFER_ACCESS_READ;

  pConfig->inputCfg.format = AUDIO_FORMAT_PCM_FLOAT;

  pConfig->inputCfg.channels = AUDIO_CHANNEL_OUT_7POINT1;

  pConfig->inputCfg.bufferProvider.getBuffer = nullptr;

  pConfig->inputCfg.bufferProvider.releaseBuffer = nullptr;

  pConfig->inputCfg.bufferProvider.cookie = nullptr;

  pConfig->inputCfg.mask = EFFECT_CONFIG_ALL;

  pConfig->inputCfg.samplingRate = 44100;

  pConfig->outputCfg.samplingRate = pConfig->inputCfg.samplingRate;

  // set a default value for the access mode, but should be overwritten by caller

  pConfig->outputCfg.accessMode = EFFECT_BUFFER_ACCESS_WRITE;

  pConfig->outputCfg.format = AUDIO_FORMAT_PCM_FLOAT;

  pConfig->outputCfg.channels = AUDIO_CHANNEL_OUT_STEREO;

  pConfig->outputCfg.bufferProvider.getBuffer = nullptr;

  pConfig->outputCfg.bufferProvider.releaseBuffer = nullptr;

  pConfig->outputCfg.bufferProvider.cookie = nullptr;

  pConfig->outputCfg.mask = EFFECT_CONFIG_ALL;

  return 0;

}

int32_t DownmixConfiureAndEnable(downmix_cntxt_s *pDescriptor) {

  effect_handle_t *effectHandle = &pDescriptor->handle;

  downmix_module_t *downmixEffectHandle = (downmix_module_t *)*effectHandle;

  const struct effect_interface_s *Downmix_api = downmixEffectHandle->itfe;

  int32_t err = 0;

  uint32_t replySize = (uint32_t)sizeof(err);

  err = (Downmix_api->command)(*effectHandle, EFFECT_CMD_SET_CONFIG,

                               sizeof(effect_config_t), &(pDescriptor->config),

                               &replySize, &err);

  if (err != 0) {

    ALOGE("Downmix command to configure returned an error %d", err);

    return err;

  }

  err = ((Downmix_api->command))(*effectHandle, EFFECT_CMD_ENABLE, 0, nullptr,

                                 &replySize, &err);

  if (err != 0) {

    ALOGE("Downmix command to enable effect returned an error %d", err);

    return err;

  }

  return 0;

}

int32_t DownmixExecute(downmix_cntxt_s *pDescriptor, FILE *finp,

                       FILE *fout) {

  effect_handle_t *effectHandle = &pDescriptor->handle;

  downmix_module_t *downmixEffectHandle = (downmix_module_t *)*effectHandle;

  const struct effect_interface_s *Downmix_api = downmixEffectHandle->itfe;

  const int numFileChannels = pDescriptor->numFileChannels;

  const int numProcessChannels = pDescriptor->numProcessChannels;

  const int fileFrameSize = numFileChannels * sizeof(short);

  const unsigned int outputChannels =

      audio_channel_count_from_out_mask(AUDIO_CHANNEL_OUT_STEREO);

  std::vector<float> outFloat(FRAME_LENGTH * MAX_NUM_CHANNELS);

  std::vector<float> inFloat(FRAME_LENGTH * MAX_NUM_CHANNELS);

  audio_buffer_t inbuffer, outbuffer;

  inbuffer.f32 = inFloat.data();

  outbuffer.f32 = outFloat.data();

  inbuffer.frameCount = FRAME_LENGTH;

  outbuffer.frameCount = FRAME_LENGTH;

  audio_buffer_t *pinbuf, *poutbuf;

  pinbuf = &inbuffer;

  poutbuf = &outbuffer;

  int frameCounter = 0;

  std::vector<short> inS16(FRAME_LENGTH * MAX_NUM_CHANNELS);

  std::vector<short> outS16(FRAME_LENGTH * MAX_NUM_CHANNELS);

  while (fread(inS16.data(), fileFrameSize, FRAME_LENGTH, finp) ==

         FRAME_LENGTH) {

    if (numFileChannels != numProcessChannels) {

      adjust_channels(inS16.data(), numFileChannels, inS16.data(),

                      numProcessChannels, sizeof(short),

                      FRAME_LENGTH * fileFrameSize);

    }

    memcpy_to_float_from_i16(inFloat.data(), inS16.data(),

                             FRAME_LENGTH * numProcessChannels);

    const int32_t err = (Downmix_api->process)(*effectHandle, pinbuf, poutbuf);

    if (err != 0) {

      ALOGE("DownmixProcess returned an error %d", err);

      return -1;

    }

    memcpy_to_i16_from_float(outS16.data(), outFloat.data(),

                             FRAME_LENGTH * outputChannels);

    fwrite(outS16.data(), sizeof(short), (FRAME_LENGTH * outputChannels),

           fout);

    frameCounter++;

  }

  printf("frameCounter: [%d]\n", frameCounter);

  return 0;

}

int32_t DowmixMainProcess(downmix_cntxt_s *pDescriptor, FILE *finp,

                          FILE *fout) {

  effect_handle_t *effectHandle = &pDescriptor->handle;

  int32_t sessionId = 0, ioId = 0;

  const effect_uuid_t downmix_uuid = {

      0x93f04452, 0xe4fe, 0x41cc, 0x91f9, {0xe4, 0x75, 0xb6, 0xd1, 0xd6, 0x9f}};

  int32_t err = AUDIO_EFFECT_LIBRARY_INFO_SYM.create_effect(

      &downmix_uuid, sessionId, ioId,

      effectHandle);

  if (err != 0) {

    ALOGE("DownmixLib_Create returned an error %d", err);

    return -1;

  }

  // Passing the init config for time being.

  err = DownmixConfiureAndEnable(pDescriptor);

  if (err != 0) {

    ALOGE("DownmixConfigureAndEnable returned an error %d", err);

    return -1;

  }

  // execute call for downmix.

  err = DownmixExecute(pDescriptor, finp, fout);

  if (err != 0) {

    ALOGE("DownmixExecute returned an error %d", err);

    return -1;

  }

  // Release the library function.

  err = AUDIO_EFFECT_LIBRARY_INFO_SYM.release_effect(*effectHandle);

  if (err != 0) {

    ALOGE("DownmixRelease returned an error %d", err);

    return -1;

  }

  return 0;

}

int main(int argc, const char *argv[]) {

  int numFileChannels = 1, numProcessChannels = 8;

  downmix_cntxt_s descriptor = {};

  DownmixDefaultConfig(&(descriptor.config));

  const char *infile = nullptr;

  const char *outfile = nullptr;

  for (int i = 1; i < argc; i++) {

    printf("%s ", argv[i]);

    if (argv[i][0] != '-') {

      if (infile == nullptr) {

        infile = argv[i];

      } else if (outfile == nullptr) {

        outfile = argv[i];

      } else {

        printUsage();

        return -1;

      }

    } else if (!strncmp(argv[i], "-fs:", 4)) {

      // Add a check for all the supported streams.

      const int samplingFreq = atoi(argv[i] + 4);

      if (samplingFreq != 8000 && samplingFreq != 11025 &&

          samplingFreq != 12000 && samplingFreq != 16000 &&

          samplingFreq != 22050 && samplingFreq != 24000 &&

          samplingFreq != 32000 && samplingFreq != 44100 &&

          samplingFreq != 48000 && samplingFreq != 88200 &&

          samplingFreq != 96000 && samplingFreq != 176400 &&

          samplingFreq != 192000) {

        printf("Unsupported Sampling Frequency : %d", samplingFreq);

        printUsage();

        return -1;

      }

      descriptor.config.inputCfg.samplingRate = samplingFreq;

      descriptor.config.outputCfg.samplingRate = samplingFreq;

    } else if (!strncmp(argv[i], "-ch_fmt:", 8)) {

      const int format = atoi(argv[i] + 8);

      uint32_t *audioType = &descriptor.config.inputCfg.channels;

      switch (format) {

        case 0:

          *audioType = AUDIO_CHANNEL_OUT_7POINT1;

          break;

        case 1:

          *audioType = AUDIO_CHANNEL_OUT_5POINT1_SIDE;

          break;

        case 2:

          *audioType = AUDIO_CHANNEL_OUT_5POINT1_BACK;

          break;

        case 3:

          *audioType = AUDIO_CHANNEL_OUT_QUAD_SIDE;

          break;

        case 4:

          *audioType = AUDIO_CHANNEL_OUT_QUAD_BACK;

          break;

        default:

          *audioType = AUDIO_CHANNEL_OUT_7POINT1;

          break;

      }

      descriptor.numProcessChannels =

          audio_channel_count_from_out_mask(*audioType);

    } else if (!strncmp(argv[i], "-fch:", 5)) {

      const int fChannels = atoi(argv[i] + 5);

      if (fChannels > 8 || fChannels < 1) {

        printf("Unsupported number of file channels : %d", fChannels);

        printUsage();

        return -1;

      }

      descriptor.numFileChannels = fChannels;

    } else if (!strncmp(argv[i], "-h", 2)) {

      printUsage();

      return 0;

    }

  }

  if (/*infile == nullptr || */ outfile == nullptr) {

    printUsage();

    return -1;

  }

  FILE *finp = fopen(infile, "rb");

  if (finp == nullptr) {

    printf("Cannot open input file %s", infile);

    return -1;

  }

  FILE *fout = fopen(outfile, "wb");

  if (fout == nullptr) {

    printf("Cannot open output file %s", outfile);

    fclose(finp);

    return -1;

  }

  const int err = DowmixMainProcess(&descriptor, finp, fout);

  // close input and output files.

  fclose(finp);

  fclose(fout);

  if (err != 0) {

    printf("Error: %d\n", err);

  }

  return err;

}