nativeapp.cpp

#define _CRT_SECURE_NO_WARNINGS

#include <chrono>
#include <cstdlib>
#include <ctime>
#include <iostream>
#include <sstream>
#include <string>
#include <fstream>
#include <Windows.h>
#include "genvid.h";

GenvidStatus GS;
void checkGS(char* gs)
{
	if (GS == GenvidStatus_Success)
	{
		std::cout << "[GV_CALL] " << gs << " suceeded!" << std::endl;
	}
	else
	{
		std::cout << "[GV_CALL] " << gs << " failed!" << std::endl;
	}
}

void generateImage(uint8_t* data)
{
	for (int x = 0; x < 1280; x++)
	{
		for (int y = 0; y < 720; y++)
		{
			int firstPixel = (x + (y * 1280)) * 3;
			data[firstPixel + 0] = 255; //(uint8_t)(255 - (x / 1280.0f) * 255);
			data[firstPixel + 1] = 0;//(uint8_t)((y / 720.0f) * 255);
			data[firstPixel + 2] = 255; (uint8_t)((sin(3.14159 * 2 * x / 720.0) + 1) * 127);
		}
	}
}

const char* VIDEO = "video";
const char* AUDIO = "audio";
int WINAPI wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPWSTR lpCmdLine, _In_ int nCmdShow)
{

	AllocConsole();
	freopen("conin$", "r", stdin);
	freopen("conout$", "w", stdout);
	freopen("conout$", "w", stderr);
	
	GS = Genvid_Initialize();
	checkGS("Initialize");

	GS = Genvid_CreateStream(AUDIO);
	checkGS("CreateStream(AUDIO)");

	GS = Genvid_SetParameterInt(AUDIO, "Audio.Source.WASAPI", 1);
	checkGS("SetParameter(AUDIO, \"Audio.Source.WASAPI\", 1)");

	GS = Genvid_CreateStream(VIDEO);
	checkGS("CreateStream(VIDEO)");

	GS = Genvid_SetParameterInt(VIDEO, "framerate", 60);
	checkGS("Genvid_SetParameterInt(VIDEO, \"framerate\", 60)");
	GS = Genvid_SetParameterInt(VIDEO, "video.width", 1280);
	checkGS("Genvid_SetParameterInt(VIDEO, \"video.width\", 1280)");
	GS = Genvid_SetParameterInt(VIDEO, "video.height", 720);
	checkGS("Genvid_SetParameterInt(VIDEO, \"video.height\", 720)");
	GS = Genvid_SetParameterInt(VIDEO, "video.pixel_format", GenvidPixelFormat_R8G8B8);
	checkGS("Genvid_SetParameterInt(VIDEO, \"video.pixel_format\", GenvidPixelFormat_R8G8B8);");
	
	uint8_t* data = new uint8_t[1280 * 720 * 3];
	generateImage(data);
	LARGE_INTEGER StartingTime, EndingTime, ElapsedMicroseconds;
	LARGE_INTEGER Frequency;

	QueryPerformanceFrequency(&Frequency);
	while (true)
	{
		QueryPerformanceCounter(&StartingTime);
		GS = Genvid_SubmitVideoData(-1, VIDEO, data, 1280 * 720 * 3);
		QueryPerformanceCounter(&EndingTime);
		ElapsedMicroseconds.QuadPart = EndingTime.QuadPart - StartingTime.QuadPart;
		ElapsedMicroseconds.QuadPart *= 1000;
		ElapsedMicroseconds.QuadPart /= Frequency.QuadPart;

		if (ElapsedMicroseconds.QuadPart > 4)
		{
			printf("Slow Genvid_SubmitVideoData(%d ms)\n", ElapsedMicroseconds.QuadPart);
		}

		if (GS != GenvidStatus_Success)
			checkGS("Genvid_SubmitVideoData(-1, VIDEO, data, 1280 * 720 * 3)");

		Sleep(15);
	}

	Genvid_Terminate();
}