/*
 * 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.
 */

//#define LOG_NDEBUG 0
#define LOG_TAG "SoftMPEG4"
#include <utils/Log.h>

#include "SoftMPEG4.h"

#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/MediaDefs.h>
#include <media/stagefright/MediaErrors.h>

#include "mp4dec_api.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;
}

SoftMPEG4::SoftMPEG4(
        const char *name,
        const OMX_CALLBACKTYPE *callbacks,
        OMX_PTR appData,
        OMX_COMPONENTTYPE **component)
    : SimpleSoftOMXComponent(name, callbacks, appData, component),
      mMode(MODE_MPEG4),
      mHandle(new tagvideoDecControls),
      mInputBufferCount(0),
      mWidth(352),
      mHeight(288),
      mCropLeft(0),
      mCropTop(0),
      mCropRight(mWidth - 1),
      mCropBottom(mHeight - 1),
      mSignalledError(false),
      mInitialized(false),
      mFramesConfigured(false),
      mNumSamplesOutput(0),
      mOutputPortSettingsChange(NONE) {
    if (!strcmp(name, "OMX.google.h263.decoder")) {
        mMode = MODE_H263;
    } else {
        CHECK(!strcmp(name, "OMX.google.mpeg4.decoder"));
    }

    initPorts();
    CHECK_EQ(initDecoder(), (status_t)OK);
}

SoftMPEG4::~SoftMPEG4() {
    if (mInitialized) {
        PVCleanUpVideoDecoder(mHandle);
    }

    delete mHandle;
    mHandle = NULL;
}

void SoftMPEG4::initPorts() {
    OMX_PARAM_PORTDEFINITIONTYPE def;
    InitOMXParams(&def);

    def.nPortIndex = 0;
    def.eDir = OMX_DirInput;
    def.nBufferCountMin = kNumInputBuffers;
    def.nBufferCountActual = def.nBufferCountMin;
    def.nBufferSize = 8192;
    def.bEnabled = OMX_TRUE;
    def.bPopulated = OMX_FALSE;
    def.eDomain = OMX_PortDomainVideo;
    def.bBuffersContiguous = OMX_FALSE;
    def.nBufferAlignment = 1;

    def.format.video.cMIMEType =
        (mMode == MODE_MPEG4)
            ? const_cast<char *>(MEDIA_MIMETYPE_VIDEO_MPEG4)
            : const_cast<char *>(MEDIA_MIMETYPE_VIDEO_H263);

    def.format.video.pNativeRender = NULL;
    def.format.video.nFrameWidth = mWidth;
    def.format.video.nFrameHeight = mHeight;
    def.format.video.nStride = def.format.video.nFrameWidth;
    def.format.video.nSliceHeight = def.format.video.nFrameHeight;
    def.format.video.nBitrate = 0;
    def.format.video.xFramerate = 0;
    def.format.video.bFlagErrorConcealment = OMX_FALSE;

    def.format.video.eCompressionFormat =
        mMode == MODE_MPEG4 ? OMX_VIDEO_CodingMPEG4 : OMX_VIDEO_CodingH263;

    def.format.video.eColorFormat = OMX_COLOR_FormatUnused;
    def.format.video.pNativeWindow = NULL;

    addPort(def);

    def.nPortIndex = 1;
    def.eDir = OMX_DirOutput;
    def.nBufferCountMin = kNumOutputBuffers;
    def.nBufferCountActual = def.nBufferCountMin;
    def.bEnabled = OMX_TRUE;
    def.bPopulated = OMX_FALSE;
    def.eDomain = OMX_PortDomainVideo;
    def.bBuffersContiguous = OMX_FALSE;
    def.nBufferAlignment = 2;

    def.format.video.cMIMEType = const_cast<char *>(MEDIA_MIMETYPE_VIDEO_RAW);
    def.format.video.pNativeRender = NULL;
    def.format.video.nFrameWidth = mWidth;
    def.format.video.nFrameHeight = mHeight;
    def.format.video.nStride = def.format.video.nFrameWidth;
    def.format.video.nSliceHeight = def.format.video.nFrameHeight;
    def.format.video.nBitrate = 0;
    def.format.video.xFramerate = 0;
    def.format.video.bFlagErrorConcealment = OMX_FALSE;
    def.format.video.eCompressionFormat = OMX_VIDEO_CodingUnused;
    def.format.video.eColorFormat = OMX_COLOR_FormatYUV420Planar;
    def.format.video.pNativeWindow = NULL;

    def.nBufferSize =
        (def.format.video.nFrameWidth * def.format.video.nFrameHeight * 3) / 2;

    addPort(def);
}

status_t SoftMPEG4::initDecoder() {
    memset(mHandle, 0, sizeof(tagvideoDecControls));
    return OK;
}

OMX_ERRORTYPE SoftMPEG4::internalGetParameter(
        OMX_INDEXTYPE index, OMX_PTR params) {
    switch (index) {
        case OMX_IndexParamVideoPortFormat:
        {
            OMX_VIDEO_PARAM_PORTFORMATTYPE *formatParams =
                (OMX_VIDEO_PARAM_PORTFORMATTYPE *)params;

            if (formatParams->nPortIndex > 1) {
                return OMX_ErrorUndefined;
            }

            if (formatParams->nIndex != 0) {
                return OMX_ErrorNoMore;
            }

            if (formatParams->nPortIndex == 0) {
                formatParams->eCompressionFormat =
                    (mMode == MODE_MPEG4)
                        ? OMX_VIDEO_CodingMPEG4 : OMX_VIDEO_CodingH263;

                formatParams->eColorFormat = OMX_COLOR_FormatUnused;
                formatParams->xFramerate = 0;
            } else {
                CHECK_EQ(formatParams->nPortIndex, 1u);

                formatParams->eCompressionFormat = OMX_VIDEO_CodingUnused;
                formatParams->eColorFormat = OMX_COLOR_FormatYUV420Planar;
                formatParams->xFramerate = 0;
            }

            return OMX_ErrorNone;
        }

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

OMX_ERRORTYPE SoftMPEG4::internalSetParameter(
        OMX_INDEXTYPE index, const OMX_PTR params) {
    switch (index) {
        case OMX_IndexParamStandardComponentRole:
        {
            const OMX_PARAM_COMPONENTROLETYPE *roleParams =
                (const OMX_PARAM_COMPONENTROLETYPE *)params;

            if (mMode == MODE_MPEG4) {
                if (strncmp((const char *)roleParams->cRole,
                            "video_decoder.mpeg4",
                            OMX_MAX_STRINGNAME_SIZE - 1)) {
                    return OMX_ErrorUndefined;
                }
            } else {
                if (strncmp((const char *)roleParams->cRole,
                            "video_decoder.h263",
                            OMX_MAX_STRINGNAME_SIZE - 1)) {
                    return OMX_ErrorUndefined;
                }
            }

            return OMX_ErrorNone;
        }

        case OMX_IndexParamVideoPortFormat:
        {
            OMX_VIDEO_PARAM_PORTFORMATTYPE *formatParams =
                (OMX_VIDEO_PARAM_PORTFORMATTYPE *)params;

            if (formatParams->nPortIndex > 1) {
                return OMX_ErrorUndefined;
            }

            if (formatParams->nIndex != 0) {
                return OMX_ErrorNoMore;
            }

            return OMX_ErrorNone;
        }

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

OMX_ERRORTYPE SoftMPEG4::getConfig(
        OMX_INDEXTYPE index, OMX_PTR params) {
    switch (index) {
        case OMX_IndexConfigCommonOutputCrop:
        {
            OMX_CONFIG_RECTTYPE *rectParams = (OMX_CONFIG_RECTTYPE *)params;

            if (rectParams->nPortIndex != 1) {
                return OMX_ErrorUndefined;
            }

            rectParams->nLeft = mCropLeft;
            rectParams->nTop = mCropTop;
            rectParams->nWidth = mCropRight - mCropLeft + 1;
            rectParams->nHeight = mCropBottom - mCropTop + 1;

            return OMX_ErrorNone;
        }

        default:
            return OMX_ErrorUnsupportedIndex;
    }
}

void SoftMPEG4::onQueueFilled(OMX_U32 portIndex) {
    if (mSignalledError || mOutputPortSettingsChange != NONE) {
        return;
    }

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

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

        PortInfo *port = editPortInfo(1);

        OMX_BUFFERHEADERTYPE *outHeader =
            port->mBuffers.editItemAt(mNumSamplesOutput & 1).mHeader;

        if (inHeader->nFlags & OMX_BUFFERFLAG_EOS) {
            inQueue.erase(inQueue.begin());
            inInfo->mOwnedByUs = false;
            notifyEmptyBufferDone(inHeader);

            ++mInputBufferCount;

            outHeader->nFilledLen = 0;
            outHeader->nFlags = OMX_BUFFERFLAG_EOS;

            List<BufferInfo *>::iterator it = outQueue.begin();
            while ((*it)->mHeader != outHeader) {
                ++it;
            }

            BufferInfo *outInfo = *it;
            outInfo->mOwnedByUs = false;
            outQueue.erase(it);
            outInfo = NULL;

            notifyFillBufferDone(outHeader);
            outHeader = NULL;
            return;
        }

        uint8_t *bitstream = inHeader->pBuffer + inHeader->nOffset;

        if (!mInitialized) {
            uint8_t *vol_data[1];
            int32_t vol_size = 0;

            vol_data[0] = NULL;

            if (inHeader->nFlags & OMX_BUFFERFLAG_CODECCONFIG) {
                vol_data[0] = bitstream;
                vol_size = inHeader->nFilledLen;
            }

            MP4DecodingMode mode =
                (mMode == MODE_MPEG4) ? MPEG4_MODE : H263_MODE;

            Bool success = PVInitVideoDecoder(
                    mHandle, vol_data, &vol_size, 1, mWidth, mHeight, mode);

            if (!success) {
                LOGW("PVInitVideoDecoder failed. Unsupported content?");

                notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
                mSignalledError = true;
                return;
            }

            MP4DecodingMode actualMode = PVGetDecBitstreamMode(mHandle);
            if (mode != actualMode) {
                notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
                mSignalledError = true;
                return;
            }

            PVSetPostProcType((VideoDecControls *) mHandle, 0);

            if (inHeader->nFlags & OMX_BUFFERFLAG_CODECCONFIG) {
                inInfo->mOwnedByUs = false;
                inQueue.erase(inQueue.begin());
                inInfo = NULL;
                notifyEmptyBufferDone(inHeader);
                inHeader = NULL;
            }

            mInitialized = true;

            if (mode == MPEG4_MODE && portSettingsChanged()) {
                return;
            }

            continue;
        }

        if (!mFramesConfigured) {
            PortInfo *port = editPortInfo(1);
            OMX_BUFFERHEADERTYPE *outHeader = port->mBuffers.editItemAt(1).mHeader;

            PVSetReferenceYUV(mHandle, outHeader->pBuffer);

            mFramesConfigured = true;
        }

        uint32_t timestamp = 0xFFFFFFFF;
        int32_t bufferSize = inHeader->nFilledLen;

        uint32_t useExtTimestamp = 0;
        if (PVDecodeVideoFrame(
                    mHandle, &bitstream, &timestamp, &bufferSize,
                    &useExtTimestamp,
                    outHeader->pBuffer) != PV_TRUE) {
            LOGE("failed to decode video frame.");

            notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
            mSignalledError = true;
            return;
        }

        if (portSettingsChanged()) {
            return;
        }

        outHeader->nTimeStamp = inHeader->nTimeStamp;

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

        ++mInputBufferCount;

        outHeader->nOffset = 0;
        outHeader->nFilledLen = (mWidth * mHeight * 3) / 2;
        outHeader->nFlags = 0;

        List<BufferInfo *>::iterator it = outQueue.begin();
        while ((*it)->mHeader != outHeader) {
            ++it;
        }

        BufferInfo *outInfo = *it;
        outInfo->mOwnedByUs = false;
        outQueue.erase(it);
        outInfo = NULL;

        notifyFillBufferDone(outHeader);
        outHeader = NULL;

        ++mNumSamplesOutput;
    }
}

bool SoftMPEG4::portSettingsChanged() {
    int32_t disp_width, disp_height;
    PVGetVideoDimensions(mHandle, &disp_width, &disp_height);

    int32_t buf_width, buf_height;
    PVGetBufferDimensions(mHandle, &buf_width, &buf_height);

    CHECK_LE(disp_width, buf_width);
    CHECK_LE(disp_height, buf_height);

    LOGV("disp_width = %d, disp_height = %d, buf_width = %d, buf_height = %d",
            disp_width, disp_height, buf_width, buf_height);

    if (mCropRight != disp_width - 1
            || mCropBottom != disp_height - 1) {
        mCropLeft = 0;
        mCropTop = 0;
        mCropRight = disp_width - 1;
        mCropBottom = disp_height - 1;

        notify(OMX_EventPortSettingsChanged,
               1,
               OMX_IndexConfigCommonOutputCrop,
               NULL);
    }

    if (buf_width != mWidth || buf_height != mHeight) {
        mWidth = buf_width;
        mHeight = buf_height;

        updatePortDefinitions();

        if (mMode == MODE_H263) {
            PVCleanUpVideoDecoder(mHandle);

            uint8_t *vol_data[1];
            int32_t vol_size = 0;

            vol_data[0] = NULL;
            if (!PVInitVideoDecoder(
                    mHandle, vol_data, &vol_size, 1, mWidth, mHeight,
                    H263_MODE)) {
                notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL);
                mSignalledError = true;
                return true;
            }
        }

        mFramesConfigured = false;

        notify(OMX_EventPortSettingsChanged, 1, 0, NULL);
        mOutputPortSettingsChange = AWAITING_DISABLED;
        return true;
    }

    return false;
}

void SoftMPEG4::onPortFlushCompleted(OMX_U32 portIndex) {
    if (portIndex == 0 && mInitialized) {
        CHECK_EQ((int)PVResetVideoDecoder(mHandle), (int)PV_TRUE);
    }
}

void SoftMPEG4::onPortEnableCompleted(OMX_U32 portIndex, bool enabled) {
    if (portIndex != 1) {
        return;
    }

    switch (mOutputPortSettingsChange) {
        case NONE:
            break;

        case AWAITING_DISABLED:
        {
            CHECK(!enabled);
            mOutputPortSettingsChange = AWAITING_ENABLED;
            break;
        }

        default:
        {
            CHECK_EQ((int)mOutputPortSettingsChange, (int)AWAITING_ENABLED);
            CHECK(enabled);
            mOutputPortSettingsChange = NONE;
            break;
        }
    }
}

void SoftMPEG4::updatePortDefinitions() {
    OMX_PARAM_PORTDEFINITIONTYPE *def = &editPortInfo(0)->mDef;
    def->format.video.nFrameWidth = mWidth;
    def->format.video.nFrameHeight = mHeight;
    def->format.video.nStride = def->format.video.nFrameWidth;
    def->format.video.nSliceHeight = def->format.video.nFrameHeight;

    def = &editPortInfo(1)->mDef;
    def->format.video.nFrameWidth = mWidth;
    def->format.video.nFrameHeight = mHeight;
    def->format.video.nStride = def->format.video.nFrameWidth;
    def->format.video.nSliceHeight = def->format.video.nFrameHeight;

    def->nBufferSize =
        (((def->format.video.nFrameWidth + 15) & -16)
            * ((def->format.video.nFrameHeight + 15) & -16) * 3) / 2;
}

}  // namespace android

android::SoftOMXComponent *createSoftOMXComponent(
        const char *name, const OMX_CALLBACKTYPE *callbacks,
        OMX_PTR appData, OMX_COMPONENTTYPE **component) {
    return new android::SoftMPEG4(name, callbacks, appData, component);
}