PL286/hardware/qcom/display/msm8996/libqdutils/qdMetaData.cpp

/*
 * Copyright (c) 2012-2017, The Linux Foundation. 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.
 *     * Neither the name of The Linux Foundation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * 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 <errno.h>
#include <string.h>
#include <sys/mman.h>
#include <cutils/log.h>
#include <gralloc_priv.h>
#include <inttypes.h>
#include "qdMetaData.h"

static int validateAndMap(private_handle_t* handle) {
    if (private_handle_t::validate(handle)) {
        ALOGE("%s: Private handle is invalid - handle:%p id: %" PRIu64,
                __func__, handle, handle->id);
        return -1;
    }
    if (handle->fd_metadata == -1) {
        ALOGE("%s: Invalid metadata fd - handle:%p id: %" PRIu64 "fd: %d",
                __func__, handle, handle->id, handle->fd_metadata);
        return -1;
    }

    if (!handle->base_metadata) {
        unsigned long size = ROUND_UP_PAGESIZE(sizeof(MetaData_t));
        void *base = mmap(NULL, size, PROT_READ|PROT_WRITE, MAP_SHARED,
                handle->fd_metadata, 0);
        if (base == reinterpret_cast<void*>(MAP_FAILED)) {
            ALOGE("%s: metadata mmap failed - handle:%p id: %" PRIu64  "fd: %d err: %s",
                __func__, handle, handle->id, handle->fd_metadata, strerror(errno));

            return -1;
        }
        handle->base_metadata = (uintptr_t) base;
    }
    return 0;
}

int setMetaData(private_handle_t *handle, DispParamType paramType,
                                                    void *param) {
    auto err = validateAndMap(handle);
    if (err != 0)
        return err;

    MetaData_t *data = reinterpret_cast <MetaData_t *>(handle->base_metadata);
    // If parameter is NULL reset the specific MetaData Key
    if (!param) {
       data->operation &= ~paramType;
       // reset param
       return 0;
    }

    data->operation |= paramType;
    switch (paramType) {
        case PP_PARAM_INTERLACED:
            data->interlaced = *((int32_t *)param);
            break;
        case UPDATE_BUFFER_GEOMETRY:
            data->bufferDim = *((BufferDim_t *)param);
            break;
        case UPDATE_REFRESH_RATE:
            data->refreshrate = *((float *)param);
            break;
        case UPDATE_COLOR_SPACE:
            data->colorSpace = *((ColorSpace_t *)param);
            break;
        case MAP_SECURE_BUFFER:
            data->mapSecureBuffer = *((int32_t *)param);
            break;
        case S3D_FORMAT:
            data->s3dFormat = *((uint32_t *)param);
            break;
        case LINEAR_FORMAT:
            data->linearFormat = *((uint32_t *)param);
            break;
        case SET_IGC:
            data->igc = *((IGC_t *)param);
            break;
        case SET_SINGLE_BUFFER_MODE:
            data->isSingleBufferMode = *((uint32_t *)param);
            break;
        case SET_VT_TIMESTAMP:
            data->vtTimeStamp = *((uint64_t *)param);
            break;
        default:
            ALOGE("Unknown paramType %d", paramType);
            break;
    }
    return 0;
}

int getMetaData(private_handle_t *handle, DispFetchParamType paramType,
                                                    void *param) {
    int ret = validateAndMap(handle);
    if (ret != 0)
        return ret;
    MetaData_t *data = reinterpret_cast <MetaData_t *>(handle->base_metadata);
    // Make sure we send 0 only if the operation queried is present
    ret = -EINVAL;

    switch (paramType) {
        case GET_PP_PARAM_INTERLACED:
            if (data->operation & PP_PARAM_INTERLACED) {
                *((int32_t *)param) = data->interlaced;
                ret = 0;
            }
            break;
        case GET_BUFFER_GEOMETRY:
            if (data->operation & UPDATE_BUFFER_GEOMETRY) {
                *((BufferDim_t *)param) = data->bufferDim;
                ret = 0;
            }
            break;
        case GET_REFRESH_RATE:
            if (data->operation & UPDATE_REFRESH_RATE) {
                *((float *)param) = data->refreshrate;
                ret = 0;
            }
            break;
        case GET_COLOR_SPACE:
            if (data->operation & UPDATE_COLOR_SPACE) {
                *((ColorSpace_t *)param) = data->colorSpace;
                ret = 0;
            }
            break;
        case GET_MAP_SECURE_BUFFER:
            if (data->operation & MAP_SECURE_BUFFER) {
                *((int32_t *)param) = data->mapSecureBuffer;
                ret = 0;
            }
            break;
        case GET_S3D_FORMAT:
            if (data->operation & S3D_FORMAT) {
                *((uint32_t *)param) = data->s3dFormat;
                ret = 0;
            }
            break;
        case GET_LINEAR_FORMAT:
            if (data->operation & LINEAR_FORMAT) {
                *((uint32_t *)param) = data->linearFormat;
                ret = 0;
            }
            break;
        case GET_IGC:
            if (data->operation & SET_IGC) {
                *((IGC_t *)param) = data->igc;
                ret = 0;
            }
            break;
        case GET_SINGLE_BUFFER_MODE:
            if (data->operation & SET_SINGLE_BUFFER_MODE) {
                *((uint32_t *)param) = data->isSingleBufferMode;
                ret = 0;
            }
            break;
        case GET_VT_TIMESTAMP:
            if (data->operation & SET_VT_TIMESTAMP) {
                *((uint64_t *)param) = data->vtTimeStamp;
                ret = 0;
            }
            break;
        default:
            ALOGE("Unknown paramType %d", paramType);
            break;
    }
    return ret;
}

int copyMetaData(struct private_handle_t *src, struct private_handle_t *dst) {
    auto err = validateAndMap(src);
    if (err != 0)
        return err;

    err = validateAndMap(dst);
    if (err != 0)
        return err;

    unsigned long size = ROUND_UP_PAGESIZE(sizeof(MetaData_t));
    MetaData_t *src_data = reinterpret_cast <MetaData_t *>(src->base_metadata);
    MetaData_t *dst_data = reinterpret_cast <MetaData_t *>(dst->base_metadata);
    memcpy(src_data, dst_data, size);
    return 0;
}