Add test for AMR-WB decoder

LOCAL_MODULE := libstagefright_amrwbdec

include $(BUILD_STATIC_LIBRARY)

################################################################################

include $(CLEAR_VARS)

LOCAL_SRC_FILES := \

        test/amrwbdec_test.cpp

LOCAL_C_INCLUDES := \

        $(LOCAL_PATH)/src \

        $(LOCAL_PATH)/include \

        $(call include-path-for, audio-utils)

LOCAL_STATIC_LIBRARIES := \

        libstagefright_amrwbdec libsndfile

LOCAL_SHARED_LIBRARIES := \

        libaudioutils

LOCAL_MODULE := libstagefright_amrwbdec_test

LOCAL_MODULE_TAGS := tests

include $(BUILD_EXECUTABLE)

/*

 * Copyright (C) 2014 The Android Open Source Project

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *  * Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 *  * Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS

 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT

 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 */

#include <stdio.h>

#include <stdint.h>

#include <string.h>

#include <assert.h>

#include <stdlib.h>

#include "pvamrwbdecoder.h"

#include <audio_utils/sndfile.h>

// Constants for AMR-WB.

enum {

    kInputBufferSize = 64,

    kSamplesPerFrame = 320,

    kBitsPerSample = 16,

    kOutputBufferSize = kSamplesPerFrame * kBitsPerSample/8,

    kSampleRate = 16000,

    kChannels = 1,

    kFileHeaderSize = 9,

    kMaxSourceDataUnitSize = 477 * sizeof(int16_t)

};

const uint32_t kFrameSizes[] = { 17, 23, 32, 36, 40, 46, 50, 58, 60 };

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

    if (argc != 3) {

        fprintf(stderr, "Usage %s <input file> <output file>\n", argv[0]);

        return EXIT_FAILURE;

    }

    // Open the input file.

    FILE* fpInput = fopen(argv[1], "rb");

    if (fpInput == NULL) {

        fprintf(stderr, "Could not open %s\n", argv[1]);

        return EXIT_FAILURE;

    }

    // Validate the input AMR file.

    char header[kFileHeaderSize];

    int bytesRead = fread(header, 1, kFileHeaderSize, fpInput);

    if ((bytesRead != kFileHeaderSize) ||

        (memcmp(header, "#!AMR-WB\n", kFileHeaderSize) != 0)) {

        fprintf(stderr, "Invalid AMR-WB file\n");

        fclose(fpInput);

        return EXIT_FAILURE;

    }

    // Open the output file.

    SF_INFO sfInfo;

    memset(&sfInfo, 0, sizeof(SF_INFO));

    sfInfo.channels = kChannels;

    sfInfo.format = SF_FORMAT_WAV | SF_FORMAT_PCM_16;

    sfInfo.samplerate = kSampleRate;

    SNDFILE *handle = sf_open(argv[2], SFM_WRITE, &sfInfo);

    if (handle == NULL) {

        fprintf(stderr, "Could not create %s\n", argv[2]);

        fclose(fpInput);

        return EXIT_FAILURE;

    }

    // Allocate the decoder memory.

    uint32_t memRequirements = pvDecoder_AmrWbMemRequirements();

    void *decoderBuf = malloc(memRequirements);

    assert(decoderBuf != NULL);

    // Create AMR-WB decoder instance.

    void *amrHandle;

    int16_t *decoderCookie;

    pvDecoder_AmrWb_Init(&amrHandle, decoderBuf, &decoderCookie);

    // Allocate input buffer.

    uint8_t *inputBuf = (uint8_t*) malloc(kInputBufferSize);

    assert(inputBuf != NULL);

    // Allocate input sample buffer.

    int16_t *inputSampleBuf = (int16_t*) malloc(kMaxSourceDataUnitSize);

    assert(inputSampleBuf != NULL);

    // Allocate output buffer.

    int16_t *outputBuf = (int16_t*) malloc(kOutputBufferSize);

    assert(outputBuf != NULL);

    // Decode loop.

    int retVal = EXIT_SUCCESS;

    while (1) {

        // Read mode.

        uint8_t modeByte;

        bytesRead = fread(&modeByte, 1, 1, fpInput);

        if (bytesRead != 1) break;

        int16 mode = ((modeByte >> 3) & 0x0f);

        // AMR-WB file format cannot have mode 10, 11, 12 and 13.

        if (mode >= 10 && mode <= 13) {

            fprintf(stderr, "Encountered illegal frame type %d\n", mode);

            retVal = EXIT_FAILURE;

            break;

        }

        if (mode >= 9) {

            // Produce silence for comfort noise, speech lost and no data.

            memset(outputBuf, 0, kOutputBufferSize);

        } else /* if (mode < 9) */ {

            // Read rest of the frame.

            int32_t frameSize = kFrameSizes[mode];

            bytesRead = fread(inputBuf, 1, frameSize, fpInput);

            if (bytesRead != frameSize) break;

            int16 frameType, frameMode;

            RX_State_wb rx_state;

            frameMode = mode;

            mime_unsorting(

                    (uint8_t *)inputBuf,

                    inputSampleBuf,

                    &frameType, &frameMode, 1, &rx_state);

            int16_t numSamplesOutput;

            pvDecoder_AmrWb(

                    frameMode, inputSampleBuf,

                    outputBuf,

                    &numSamplesOutput,

                    decoderBuf, frameType, decoderCookie);

            if (numSamplesOutput != kSamplesPerFrame) {

                fprintf(stderr, "Decoder encountered error\n");

                retVal = EXIT_FAILURE;

                break;

            }

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

                outputBuf[i] &= 0xfffC;

            }

        }

        // Write output to wav.

        sf_writef_short(handle, outputBuf, kSamplesPerFrame / kChannels);

    }

    // Close input and output file.

    fclose(fpInput);

    sf_close(handle);

    // Free allocated memory.

    free(inputBuf);

    free(inputSampleBuf);

    free(outputBuf);

    return retVal;

}