media/libstagefright/codecs/raw/SoftRaw.cpp

/*
 * Copyright (C) 2012 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.
 */

//#define LOG_NDEBUG 0
#define LOG_TAG "SoftRaw"
#include <utils/Log.h>

#include "SoftRaw.h"

#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/foundation/hexdump.h>

namespace android {

template<class T>
static void InitOMXParams(T *params) {
    params->nSize = sizeof(T);
    params->nVersion.s.nVersionMajor = 1;
    params->nVersion.s.nVersionMinor = 0;
    params->nVersion.s.nRevision = 0;
    params->nVersion.s.nStep = 0;
}

SoftRaw::SoftRaw(
        const char *name,
        const OMX_CALLBACKTYPE *callbacks,
        OMX_PTR appData,
        OMX_COMPONENTTYPE **component)
    : SimpleSoftOMXComponent(name, callbacks, appData, component),
      mSignalledError(false),
      mChannelCount(2),
      mSampleRate(44100),
      mNumericalData(OMX_NumericalDataSigned),
      mBitsPerSample(16) {
    initPorts();
    CHECK_EQ(initDecoder(), (status_t)OK);
}

SoftRaw::~SoftRaw() {
}

void SoftRaw::initPorts() {
    OMX_PARAM_PORTDEFINITIONTYPE def;
    InitOMXParams(&def);

    def.nPortIndex = 0;
    def.eDir = OMX_DirInput;
    def.nBufferCountMin = kNumBuffers;
    def.nBufferCountActual = def.nBufferCountMin;
    def.nBufferSize = 32 * 1024;
    def.bEnabled = OMX_TRUE;
    def.bPopulated = OMX_FALSE;
    def.eDomain = OMX_PortDomainAudio;
    def.bBuffersContiguous = OMX_FALSE;
    def.nBufferAlignment = 1;

    def.format.audio.cMIMEType = const_cast<char *>("audio/raw");
    def.format.audio.pNativeRender = NULL;
    def.format.audio.bFlagErrorConcealment = OMX_FALSE;
    def.format.audio.eEncoding = OMX_AUDIO_CodingPCM;

    addPort(def);

    def.nPortIndex = 1;
    def.eDir = OMX_DirOutput;
    def.nBufferCountMin = kNumBuffers;
    def.nBufferCountActual = def.nBufferCountMin;
    def.nBufferSize = 32 * 1024;
    def.bEnabled = OMX_TRUE;
    def.bPopulated = OMX_FALSE;
    def.eDomain = OMX_PortDomainAudio;
    def.bBuffersContiguous = OMX_FALSE;
    def.nBufferAlignment = 2;

    def.format.audio.cMIMEType = const_cast<char *>("audio/raw");
    def.format.audio.pNativeRender = NULL;
    def.format.audio.bFlagErrorConcealment = OMX_FALSE;
    def.format.audio.eEncoding = OMX_AUDIO_CodingPCM;

    addPort(def);
}

status_t SoftRaw::initDecoder() {
    return OK;
}

OMX_ERRORTYPE SoftRaw::internalGetParameter(
        OMX_INDEXTYPE index, OMX_PTR params) {
    switch (index) {
        case OMX_IndexParamAudioPcm:
        {
            OMX_AUDIO_PARAM_PCMMODETYPE *pcmParams =
                (OMX_AUDIO_PARAM_PCMMODETYPE *)params;

            if (!isValidOMXParam(pcmParams)) {
                return OMX_ErrorBadParameter;
            }

            if (pcmParams->nPortIndex != 0 && pcmParams->nPortIndex != 1) {
                return OMX_ErrorUndefined;
            }

            pcmParams->eNumData = (OMX_NUMERICALDATATYPE)mNumericalData;
            pcmParams->eEndian = OMX_EndianBig;
            pcmParams->bInterleaved = OMX_TRUE;
            pcmParams->nBitPerSample = mBitsPerSample;
            pcmParams->ePCMMode = OMX_AUDIO_PCMModeLinear;
            pcmParams->eChannelMapping[0] = OMX_AUDIO_ChannelLF;
            pcmParams->eChannelMapping[1] = OMX_AUDIO_ChannelRF;

            pcmParams->nChannels = mChannelCount;
            pcmParams->nSamplingRate = mSampleRate;

            return OMX_ErrorNone;
        }

        default:
            return SimpleSoftOMXComponent::internalGetParameter(index, params);
    }
}

OMX_ERRORTYPE SoftRaw::internalSetParameter(
        OMX_INDEXTYPE index, const OMX_PTR params) {
    switch (index) {
        case OMX_IndexParamStandardComponentRole:
        {
            const OMX_PARAM_COMPONENTROLETYPE *roleParams =
                (const OMX_PARAM_COMPONENTROLETYPE *)params;

            if (!isValidOMXParam(roleParams)) {
                return OMX_ErrorBadParameter;
            }

            if (strncmp((const char *)roleParams->cRole,
                        "audio_decoder.raw",
                        OMX_MAX_STRINGNAME_SIZE - 1)) {
                return OMX_ErrorUndefined;
            }

            return OMX_ErrorNone;
        }

        case OMX_IndexParamAudioPcm:
        {
            const OMX_AUDIO_PARAM_PCMMODETYPE *pcmParams =
                (OMX_AUDIO_PARAM_PCMMODETYPE *)params;

            if (!isValidOMXParam(pcmParams)) {
                return OMX_ErrorBadParameter;
            }

            if (pcmParams->nPortIndex != 0) {
                return OMX_ErrorUndefined;
            }

            mChannelCount = pcmParams->nChannels;
            mSampleRate = pcmParams->nSamplingRate;
            mNumericalData = pcmParams->eNumData;
            mBitsPerSample = pcmParams->nBitPerSample;

            return OMX_ErrorNone;
        }

        default:
        {
            OMX_ERRORTYPE err = SimpleSoftOMXComponent::internalSetParameter(
                    index, params);
            // In case inPort->mDef.nBufferSize changed, the output buffer size
            // should match the input buffer size.
            PortInfo *inPort = editPortInfo(0);
            PortInfo *outPort = editPortInfo(1);
            outPort->mDef.nBufferSize = inPort->mDef.nBufferSize;
            return err;
        }
    }
}

void SoftRaw::onQueueFilled(OMX_U32 /* portIndex */) {
    if (mSignalledError) {
        return;
    }

    List<BufferInfo *> &inQueue = getPortQueue(0);
    List<BufferInfo *> &outQueue = getPortQueue(1);

    while (!inQueue.empty() && !outQueue.empty()) {
        BufferInfo *inInfo = *inQueue.begin();
        OMX_BUFFERHEADERTYPE *inHeader = inInfo->mHeader;

        BufferInfo *outInfo = *outQueue.begin();
        OMX_BUFFERHEADERTYPE *outHeader = outInfo->mHeader;

        CHECK_GE(outHeader->nAllocLen, inHeader->nFilledLen);
        memcpy(outHeader->pBuffer,
               inHeader->pBuffer + inHeader->nOffset,
               inHeader->nFilledLen);

        outHeader->nFlags = inHeader->nFlags;
        outHeader->nOffset = 0;
        outHeader->nFilledLen = inHeader->nFilledLen;
        outHeader->nTimeStamp = inHeader->nTimeStamp;

        bool sawEOS = (inHeader->nFlags & OMX_BUFFERFLAG_EOS) != 0;

        inQueue.erase(inQueue.begin());
        inInfo->mOwnedByUs = false;
        notifyEmptyBufferDone(inHeader);

        outQueue.erase(outQueue.begin());
        outInfo->mOwnedByUs = false;
        notifyFillBufferDone(outHeader);

        if (sawEOS) {
            break;
        }
    }
}

}  // namespace android

android::SoftOMXComponent *createSoftOMXComponent(
        const char *name, const OMX_CALLBACKTYPE *callbacks,
        OMX_PTR appData, OMX_COMPONENTTYPE **component) {
    return new android::SoftRaw(name, callbacks, appData, component);
}