libqdutils/qdMetaData.cpp

/*
 * Copyright (c) 2012-2015, 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>
#define __STDC_FORMAT_MACROS 1
#include <inttypes.h>
#include "qdMetaData.h"

int setMetaData(private_handle_t *handle, DispParamType paramType,
                                                    void *param) {
    if (!handle) {
        ALOGE("%s: Private handle is null!", __func__);
        return -1;
    }
    if (handle->fd_metadata == -1) {
        ALOGE("%s: Bad fd for extra data!", __func__);
        return -1;
    }
    if (!param) {
        ALOGE("%s: input param is null!", __func__);
        return -1;
    }
    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: mmap() failed: error is %s!", __func__, strerror(errno));
        return -1;
    }
    MetaData_t *data = reinterpret_cast <MetaData_t *>(base);
    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 = *((uint32_t *)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 = *((bool *)param);
            break;
        default:
            ALOGE("Unknown paramType %d", paramType);
            break;
    }
    if(munmap(base, size))
        ALOGE("%s: failed to unmap ptr %p, err %d", __func__, (void*)base,
                                                                        errno);
    return 0;
}