/* Copyright (c) 2022, NVIDIA CORPORATION. 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 NVIDIA CORPORATION 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 BY THE COPYRIGHT HOLDERS ``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 "eglstrm_common.h"
#if defined(EXTENSION_LIST)
EXTENSION_LIST(EXTLST_EXTERN)
#endif
#include <cuda.h>

int  parseCmdLine(int argc, char *argv[], TestArgs *args);
void printUsage(void);
int  NUMTRIALS   = 10;
int  profileAPIs = 0;

bool verbose       = 0;
bool isCrossDevice = 0;

// Parse the command line options. Returns FAILURE on a parse error, SUCCESS
// otherwise.
int parseCmdLine(int argc, char *argv[], TestArgs *args)
{
    int i;

    for (i = 1; i < argc; i++) {
        if (strcmp(argv[i], "-h") == 0) {
            printUsage();
            exit(0);
        }
        else if (strcmp(argv[i], "-n") == 0) {
            ++i;
            if (sscanf(argv[i], "%d", &NUMTRIALS) != 1 || NUMTRIALS <= 0) {
                printf("Invalid trial count: %s should be > 0\n", argv[i]);
                return -1;
            }
        }
        else if (strcmp(argv[i], "-profile") == 0) {
            profileAPIs = 1;
        }
        else if (strcmp(argv[i], "-crossdev") == 0) {
            isCrossDevice = 1;
        }
        else if (strcmp(argv[i], "-width") == 0) {
            ++i;
            if (sscanf(argv[i], "%d", &WIDTH) != 1 || (WIDTH <= 0)) {
                printf("Width should be greater than 0\n");
                return -1;
            }
        }
        else if (strcmp(argv[i], "-height") == 0) {
            ++i;
            if (sscanf(argv[i], "%d", &HEIGHT) != 1 || (HEIGHT <= 0)) {
                printf("Width should be greater than 0\n");
                return -1;
            }
        }
        else if (0 == strcmp(&argv[i][1], "proctype")) {
            ++i;
            if (!strcasecmp(argv[i], "prod")) {
                args->isProducer = 1;
            }
            else if (!strcasecmp(argv[i], "cons")) {
                args->isProducer = 0;
            }
            else {
                printf("%s: Bad Process Type: %s\n", __func__, argv[i]);
                return 1;
            }
        }
        else if (strcmp(argv[i], "-v") == 0) {
            verbose = 1;
        }
        else {
            printf("Unknown option: %s\n", argv[i]);
            return -1;
        }
    }

    if (isCrossDevice) {
        int deviceCount = 0;

        CUresult error_id = cuInit(0);
        if (error_id != CUDA_SUCCESS) {
            printf("cuInit(0) returned %d\n", error_id);
            printf("Result = FAIL\n");
            exit(EXIT_FAILURE);
        }

        error_id = cuDeviceGetCount(&deviceCount);
        if (error_id != CUDA_SUCCESS) {
            printf("cuDeviceGetCount returned %d\n", (int)error_id);
            printf("Result = FAIL\n");
            exit(EXIT_FAILURE);
        }

        int      iGPUexists = 0;
        CUdevice dev;
        for (dev = 0; dev < deviceCount; ++dev) {
            int      integrated   = 0;
            CUresult error_result = cuDeviceGetAttribute(&integrated, CU_DEVICE_ATTRIBUTE_INTEGRATED, dev);

            if (error_result != CUDA_SUCCESS) {
                printf("cuDeviceGetAttribute returned error : %d\n", (int)error_result);
                exit(EXIT_FAILURE);
            }

            if (integrated) {
                iGPUexists = 1;
            }
        }

        if (!iGPUexists) {
            printf("No Integrated GPU found in the system.\n");
            printf("-crossdev option is only supported on systems with an Integrated "
                   "GPU and a Discrete GPU\n");
            printf("Waiving the execution\n");
            exit(EXIT_SUCCESS);
        }
    }

    if (!eglSetupExtensions(isCrossDevice)) {
        printf("SetupExtentions failed \n");
        exit(EXIT_FAILURE);
    }
#define MAX_EGL_DEVICES 4
    EGLDeviceEXT devices[MAX_EGL_DEVICES];
    EGLint       numDevices = 0;
    EGLBoolean   eglStatus  = eglQueryDevicesEXT(MAX_EGL_DEVICES, devices, &numDevices);
    if (eglStatus != EGL_TRUE) {
        printf("Error querying EGL devices\n");
        exit(EXIT_FAILURE);
    }

    if (numDevices == 0) {
        printf("No EGL devices found\n");
        eglStatus = EGL_FALSE;
        exit(2); // EXIT_WAIVED
    }

    int egl_device_id = 0;
    for (egl_device_id = 0; egl_device_id < numDevices; egl_device_id++) {
        EGLAttrib cuda_device;
        eglStatus = eglQueryDeviceAttribEXT(devices[egl_device_id], EGL_CUDA_DEVICE_NV, &cuda_device);
        if (eglStatus == EGL_TRUE) {
            break;
        }
    }

    if (egl_device_id >= numDevices) {
        printf("No CUDA Capable EGL Device found.. Waiving execution\n");
        exit(2); // EXIT_WAIVED
    }

    if (isCrossDevice) {
        if (numDevices == 1) {
            printf("Found only one EGL device, cannot setup cross GPU streams. "
                   "Waiving\n");
            eglStatus = EGL_FALSE;
            exit(2); // EXIT_WAIVED
        }
    }

    return 0;
}

void launchProducer(TestArgs *args)
{
    /* Cross-process creation of producer */
    char argsProducer[1024];
    char str[256];

    strcpy(argsProducer, "./EGLStream_CUDA_CrossGPU -proctype prod ");

    if (isCrossDevice) {
        sprintf(str, "-crossdev ");
        strcat(argsProducer, str);
    }

    if (verbose) {
        sprintf(str, "-v ");
        strcat(argsProducer, str);
    }

    /*Make the process run in bg*/
    strcat(argsProducer, "& ");

    printf("\n%s: Crossproc Producer command: %s \n", __func__, argsProducer);

    /*Create crossproc Producer*/
    system(argsProducer);

    /*Enable crossproc Consumer in the same process */
    args->isProducer = 0;
}

void printUsage(void)
{
    printf("Usage:\n");
    printf("  -h           Print this help message\n");
    printf("  -n n         Exit after running n trials. Set to 10 by default\n");
    printf("  -profile     Profile time taken by ReleaseAPI. Not set by default\n");
    printf("  -crossdev    Run with producer on idgpu and consumer on dgpu\n");
    printf("  -dgpu        (same as -crossdev, deprecated)\n");
    printf("  -v           verbose output\n");
}
