#include "all.h"
#include "../3rdParty/Storm/Source/storm.h"

#if !SDL_VERSION_ATLEAST(2, 0, 4)
#include <queue>
#endif

#include "display.h"
#include "stubs.h"
#include <Radon.hpp>
#include <SDL.h>
#include <SDL_endian.h>
#include <SDL_mixer.h>
#include <smacker.h>

#include "DiabloUI/diabloui.h"

namespace dvl {

std::string basePath;
std::string prefPath;

DWORD nLastError = 0;
bool directFileAccess = false;
char SBasePath[DVL_MAX_PATH];

#ifdef USE_SDL1
static bool IsSVidVideoMode = false;
#endif

static std::string getIniPath()
{
	char path[DVL_MAX_PATH];
	GetPrefPath(path, DVL_MAX_PATH);
	std::string result = path;
	result.append("diablo.ini");
	return result;
}

radon::File& getIni() {
  static radon::File ini(getIniPath());
  return ini;
}

static Mix_Chunk *SFileChunk = NULL;

void GetBasePath(char *buffer, size_t size)
{
	if (basePath.length()) {
		snprintf(buffer, size, "%s", basePath.c_str());
		return;
	}

	char *path = SDL_GetBasePath();
	if (path == NULL) {
		SDL_Log(SDL_GetError());
		buffer[0] = '\0';
		return;
	}

	snprintf(buffer, size, "%s", path);
	SDL_free(path);
}

void GetPrefPath(char *buffer, size_t size)
{
	if (prefPath.length()) {
		snprintf(buffer, size, "%s", prefPath.c_str());
		return;
	}

	char *path = SDL_GetPrefPath("diasurgical", "devilution");
	if (path == NULL) {
		buffer[0] = '\0';
		return;
	}

	snprintf(buffer, size, "%s", path);
	SDL_free(path);
}

void TranslateFileName(char *dst, int dstLen, const char *src)
{
	for (int i = 0; i < dstLen; i++) {
		char c = *src++;
		dst[i] = c == '\\' ? '/' : c;
		if (!c) {
			break;
		}
	}
}

BOOL SFileDdaBeginEx(HANDLE hFile, DWORD flags, DWORD mask, unsigned __int32 lDistanceToMove,
    signed __int32 volume, signed int pan, int a7)
{
	DWORD bytestoread = SFileGetFileSize(hFile, 0);
	char *SFXbuffer = (char *)malloc(bytestoread);
	SFileReadFile(hFile, SFXbuffer, bytestoread, NULL, NULL);

	SDL_RWops *rw = SDL_RWFromConstMem(SFXbuffer, bytestoread);
	if (rw == NULL) {
		SDL_Log(SDL_GetError());
		return false;
	}
	if (SFileChunk) {
		SFileDdaEnd(hFile);
		SFileFreeChunk();
	}
	SFileChunk = Mix_LoadWAV_RW(rw, 1);
	free(SFXbuffer);

	Mix_Volume(0, MIX_MAX_VOLUME - MIX_MAX_VOLUME * volume / VOLUME_MIN);
	int panned = 255 - 255 * abs(pan) / 10000;
	Mix_SetPanning(0, pan <= 0 ? 255 : panned, pan >= 0 ? 255 : panned);
	Mix_PlayChannel(0, SFileChunk, 0);

	return true;
}

void SFileFreeChunk()
{
	if (SFileChunk) {
		Mix_FreeChunk(SFileChunk);
		SFileChunk = NULL;
	}
}

BOOL SFileDdaDestroy()
{
	if (SFileChunk) {
		Mix_FreeChunk(SFileChunk);
		SFileChunk = NULL;
	}

	return true;
}

BOOL SFileDdaEnd(HANDLE hFile)
{
	Mix_HaltChannel(0);

	return true;
}

BOOL SFileDdaGetPos(HANDLE hFile, DWORD *current, DWORD *end)
{
	*current = 0;
	*end = 1;

	if (Mix_GetChunk(0) != SFileChunk || !Mix_Playing(0)) {
		*current = *end;
	}

	return true;
}

BOOL SFileDdaSetVolume(HANDLE hFile, signed int bigvolume, signed int volume)
{
	Mix_VolumeMusic(MIX_MAX_VOLUME - MIX_MAX_VOLUME * bigvolume / VOLUME_MIN);

	return true;
}

// Converts ASCII characters to lowercase
// Converts slash (0x2F) / backslash (0x5C) to system file-separator
unsigned char AsciiToLowerTable_Path[256] = {
	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
#ifdef _WIN32
	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x5C,
#else
	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
#endif
	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F,
	0x40, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
#ifdef _WIN32
	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F,
#else
	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x5B, 0x2F, 0x5D, 0x5E, 0x5F,
#endif
	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F,
	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F,
	0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F,
	0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F,
	0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF,
	0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF,
	0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF,
	0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF,
	0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF,
	0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF
};

BOOL SFileOpenFile(const char *filename, HANDLE *phFile)
{
	bool result = false;

	if (directFileAccess) {
		char directPath[DVL_MAX_PATH] = "\0";
		char tmpPath[DVL_MAX_PATH] = "\0";
		for (size_t i = 0; i < strlen(filename); i++) {
			tmpPath[i] = AsciiToLowerTable_Path[static_cast<unsigned char>(filename[i])];
		}
		snprintf(directPath, DVL_MAX_PATH, "%s%s", SBasePath, tmpPath);
		result = SFileOpenFileEx((HANDLE)0, directPath, 0xFFFFFFFF, phFile);
	}
	if (!result && patch_rt_mpq) {
		result = SFileOpenFileEx((HANDLE)patch_rt_mpq, filename, 0, phFile);
	}
	if (!result) {
		result = SFileOpenFileEx((HANDLE)diabdat_mpq, filename, 0, phFile);
	}

	if (!result || !*phFile) {
		SDL_Log("%s: Not found: %s", __FUNCTION__, filename);
	}
	return result;
}

BOOL SBmpLoadImage(const char *pszFileName, SDL_Color *pPalette, BYTE *pBuffer, DWORD dwBuffersize, DWORD *pdwWidth, DWORD *dwHeight, DWORD *pdwBpp)
{
	HANDLE hFile;
	size_t size;
	PCXHEADER pcxhdr;
	BYTE paldata[256][3];
	BYTE *dataPtr, *fileBuffer;
	BYTE byte;

	if (pdwWidth)
		*pdwWidth = 0;
	if (dwHeight)
		*dwHeight = 0;
	if (pdwBpp)
		*pdwBpp = 0;

	if (!pszFileName || !*pszFileName) {
		return false;
	}

	if (pBuffer && !dwBuffersize) {
		return false;
	}

	if (!pPalette && !pBuffer && !pdwWidth && !dwHeight) {
		return false;
	}

	if (!SFileOpenFile(pszFileName, &hFile)) {
		return false;
	}

	while (strchr(pszFileName, 92))
		pszFileName = strchr(pszFileName, 92) + 1;

	while (strchr(pszFileName + 1, 46))
		pszFileName = strchr(pszFileName, 46);

	// omit all types except PCX
	if (!pszFileName || strcasecmp(pszFileName, ".pcx")) {
		return false;
	}

	if (!SFileReadFile(hFile, &pcxhdr, 128, 0, 0)) {
		SFileCloseFile(hFile);
		return false;
	}

	int width = SDL_SwapLE16(pcxhdr.Xmax) - SDL_SwapLE16(pcxhdr.Xmin) + 1;
	int height = SDL_SwapLE16(pcxhdr.Ymax) - SDL_SwapLE16(pcxhdr.Ymin) + 1;

	// If the given buffer is larger than width * height, assume the extra data
	// is scanline padding.
	//
	// This is useful because in SDL the pitch size is often slightly larger
	// than image width for efficiency.
	const int x_skip = dwBuffersize / height - width;

	if (pdwWidth)
		*pdwWidth = width;
	if (dwHeight)
		*dwHeight = height;
	if (pdwBpp)
		*pdwBpp = pcxhdr.BitsPerPixel;

	if (!pBuffer) {
		SFileSetFilePointer(hFile, 0, 0, 2);
		fileBuffer = NULL;
	} else {
		size = SFileGetFileSize(hFile, 0) - SFileSetFilePointer(hFile, 0, 0, 1);
		fileBuffer = (BYTE *)malloc(size);
	}

	if (fileBuffer) {
		SFileReadFile(hFile, fileBuffer, size, 0, 0);
		dataPtr = fileBuffer;

		for (int j = 0; j < height; j++) {
			for (int x = 0; x < width; dataPtr++) {
				byte = *dataPtr;
				if (byte < 0xC0) {
					*pBuffer = byte;
					pBuffer++;
					x++;
					continue;
				}
				dataPtr++;

				for (int i = 0; i < (byte & 0x3F); i++) {
					*pBuffer = *dataPtr;
					pBuffer++;
					x++;
				}
			}
			// Skip the pitch padding.
			pBuffer += x_skip;
		}

		free(fileBuffer);
	}

	if (pPalette && pcxhdr.BitsPerPixel == 8) {
		SFileSetFilePointer(hFile, -768, 0, 1);
		SFileReadFile(hFile, paldata, 768, 0, 0);
		for (int i = 0; i < 256; i++) {
			pPalette[i].r = paldata[i][0];
			pPalette[i].g = paldata[i][1];
			pPalette[i].b = paldata[i][2];
#ifndef USE_SDL1
			pPalette[i].a = SDL_ALPHA_OPAQUE;
#endif
		}
	}

	SFileCloseFile(hFile);

	return true;
}

void *SMemAlloc(unsigned int amount, char *logfilename, int logline, int defaultValue)
{
	assert(amount != -1u);
	return malloc(amount);
}

BOOL SMemFree(void *location, char *logfilename, int logline, char defaultValue)
{
	assert(location);
	free(location);
	return true;
}

bool getIniBool(const char *sectionName, const char *keyName, bool defaultValue)
{
	char string[2];

	if (!getIniValue(sectionName, keyName, string, 2))
		return defaultValue;

	return strtol(string, NULL, 10) != 0;
}

bool getIniValue(const char *sectionName, const char *keyName, char *string, int stringSize, int *dataSize)
{
	radon::Section *section = getIni().getSection(sectionName);
	if (!section)
		return false;

	radon::Key *key = section->getKey(keyName);
	if (!key)
		return false;

	std::string value = key->getStringValue();
	if (dataSize)
		*dataSize = value.length();

	if (string)
		strncpy(string, value.c_str(), stringSize);

	return true;
}

void setIniValue(const char *sectionName, const char *keyName, char *value, int len)
{
	radon::File& ini = getIni();

	radon::Section *section = ini.getSection(sectionName);
	if (!section) {
		ini.addSection(sectionName);
		section = ini.getSection(sectionName);
	}

	std::string stringValue(value, len ? len : strlen(value));

	radon::Key *key = section->getKey(keyName);
	if (!key) {
		section->addKey(radon::Key(keyName, stringValue));
	} else {
		key->setValue(stringValue);
	}

	ini.saveToFile();
}

BOOL SRegLoadValue(const char *keyname, const char *valuename, BYTE flags, int *value)
{
	char string[10];
	if (getIniValue(keyname, valuename, string, 10)) {
		*value = strtol(string, NULL, 10);
		return true;
	}

	return false;
}

BOOL SRegSaveValue(const char *keyname, const char *valuename, BYTE flags, DWORD result)
{
	char str[10];
	sprintf(str, "%d", result);
	setIniValue(keyname, valuename, str);

	return true;
}

double SVidFrameEnd;
double SVidFrameLength;
BYTE SVidLoop;
smk SVidSMK;
SDL_Color SVidPreviousPalette[256];
SDL_Palette *SVidPalette;
SDL_Surface *SVidSurface;
BYTE *SVidBuffer;
unsigned long SVidWidth, SVidHeight;

#if SDL_VERSION_ATLEAST(2, 0, 4)
SDL_AudioDeviceID deviceId;
static bool HaveAudio()
{
	return deviceId != 0;
}
#else
static bool HaveAudio()
{
	return SDL_GetAudioStatus() != SDL_AUDIO_STOPPED;
}
#endif

void SVidRestartMixer()
{
	if (Mix_OpenAudio(22050, AUDIO_S16LSB, 2, 1024) < 0) {
		SDL_Log(Mix_GetError());
	}
	Mix_AllocateChannels(25);
	Mix_ReserveChannels(1);
}

#if !SDL_VERSION_ATLEAST(2, 0, 4)
struct AudioQueueItem {
	unsigned char *data;
	unsigned long len;
	const unsigned char *pos;
};

class AudioQueue {
public:
	static void Callback(void *userdata, Uint8 *out, int out_len)
	{
		static_cast<AudioQueue *>(userdata)->Dequeue(out, out_len);
	}

	void Subscribe(SDL_AudioSpec *spec)
	{
		spec->userdata = this;
		spec->callback = AudioQueue::Callback;
	}

	void Enqueue(const unsigned char *data, unsigned long len)
	{
#if SDL_VERSION_ATLEAST(2, 0, 4)
		SDL_LockAudioDevice(deviceId);
		EnqueueUnsafe(data, len);
		SDL_UnlockAudioDevice(deviceId);
#else
		SDL_LockAudio();
		EnqueueUnsafe(data, len);
		SDL_UnlockAudio();
#endif
	}

	void Clear()
	{
		while (!queue_.empty())
			Pop();
	}

private:
	void EnqueueUnsafe(const unsigned char *data, unsigned long len)
	{
		AudioQueueItem item;
		item.data = new unsigned char[len];
		memcpy(item.data, data, len * sizeof(item.data[0]));
		item.len = len;
		item.pos = item.data;
		queue_.push(item);
	}

	void Dequeue(Uint8 *out, int out_len)
	{
		SDL_memset(out, 0, sizeof(out[0]) * out_len);
		AudioQueueItem *item;
		while ((item = Next()) != NULL) {
			if (static_cast<unsigned long>(out_len) <= item->len) {
				SDL_MixAudio(out, item->pos, out_len, SDL_MIX_MAXVOLUME);
				item->pos += out_len;
				item->len -= out_len;
				return;
			}

			SDL_MixAudio(out, item->pos, item->len, SDL_MIX_MAXVOLUME);
			out += item->len;
			out_len -= item->len;
			Pop();
		}
	}

	AudioQueueItem *Next()
	{
		while (!queue_.empty() && queue_.front().len == 0)
			Pop();
		if (queue_.empty())
			return NULL;
		return &queue_.front();
	}

	void Pop()
	{
		delete[] queue_.front().data;
		queue_.pop();
	}

	std::queue<AudioQueueItem> queue_;
};

static AudioQueue *sVidAudioQueue = new AudioQueue();
#endif

void SVidPlayBegin(char *filename, int a2, int a3, int a4, int a5, int flags, HANDLE *video)
{
	if (flags & 0x10000 || flags & 0x20000000) {
		return;
	}

	SVidLoop = false;
	if (flags & 0x40000)
		SVidLoop = true;
	bool enableVideo = !(flags & 0x100000);
	bool enableAudio = !(flags & 0x1000000);
	//0x8 // Non-interlaced
	//0x200, 0x800 // Upscale video
	//0x80000 // Center horizontally
	//0x800000 // Edge detection
	//0x200800 // Clear FB

	SFileOpenFile(filename, video);

	int bytestoread = SFileGetFileSize(*video, 0);
	SVidBuffer = DiabloAllocPtr(bytestoread);
	SFileReadFile(*video, SVidBuffer, bytestoread, NULL, 0);

	SVidSMK = smk_open_memory(SVidBuffer, bytestoread);
	if (SVidSMK == NULL) {
		return;
	}

	unsigned char channels[7], depth[7];
	unsigned long rate[7];
	smk_info_audio(SVidSMK, NULL, channels, depth, rate);
	if (enableAudio && depth[0] != 0) {
		smk_enable_audio(SVidSMK, 0, enableAudio);
		SDL_AudioSpec audioFormat;
		SDL_zero(audioFormat);
		audioFormat.freq = rate[0];
		audioFormat.format = depth[0] == 16 ? AUDIO_S16SYS : AUDIO_U8;
		audioFormat.channels = channels[0];

		Mix_CloseAudio();

#if SDL_VERSION_ATLEAST(2, 0, 4)
		deviceId = SDL_OpenAudioDevice(NULL, 0, &audioFormat, NULL, 0);
		if (deviceId == 0) {
			ErrSdl();
		}

		SDL_PauseAudioDevice(deviceId, 0); /* start audio playing. */
#else
		sVidAudioQueue->Subscribe(&audioFormat);
		if (SDL_OpenAudio(&audioFormat, NULL) != 0) {
			ErrSdl();
		}
		SDL_PauseAudio(0);
#endif
	}

	unsigned long nFrames;
	smk_info_all(SVidSMK, NULL, &nFrames, &SVidFrameLength);
	smk_info_video(SVidSMK, &SVidWidth, &SVidHeight, NULL);

	smk_enable_video(SVidSMK, enableVideo);
	smk_first(SVidSMK); // Decode first frame

	smk_info_video(SVidSMK, &SVidWidth, &SVidHeight, NULL);
#ifndef USE_SDL1
	if (renderer) {
		SDL_DestroyTexture(texture);
		texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGB888, SDL_TEXTUREACCESS_STREAMING, SVidWidth, SVidHeight);
		if (texture == NULL) {
			ErrSdl();
		}
		if (SDL_RenderSetLogicalSize(renderer, SVidWidth, SVidHeight) <= -1) {
			ErrSdl();
		}
	}
#else
	// Set the video mode close to the SVid resolution while preserving aspect ratio.
	{
		const auto *display = SDL_GetVideoSurface();
		IsSVidVideoMode = (display->flags & (SDL_FULLSCREEN | SDL_NOFRAME)) != 0;

		if (IsSVidVideoMode) {
			/* Get available fullscreen/hardware modes */
			SDL_Rect **modes = SDL_ListModes(NULL, display->flags);

			/* Check is there are any modes available */
			if(modes == (SDL_Rect **)0){
				IsSVidVideoMode = false;
			}

			/* Check if our resolution is restricted */
			if(modes != (SDL_Rect **)-1){
				// Search for a usable video mode
				bool UsableModeFound = false;
				for (int i=0; modes[i]; i++) {
					if (modes[i]->w == SVidWidth || modes[i]->h == SVidHeight) {
						UsableModeFound = true;
						break;
					}
				}
				IsSVidVideoMode = UsableModeFound;
			}
		}

		if (IsSVidVideoMode) {
			int w, h;
			if (display->w * SVidWidth > display->h * SVidHeight) {
				w = SVidWidth;
				h = SVidWidth * display->h / display->w;
			} else {
				w = SVidHeight * display->w / display->h;
				h = SVidHeight;
			}
			SetVideoMode(w, h, display->format->BitsPerPixel, display->flags);
		}
	}
#endif
	memcpy(SVidPreviousPalette, orig_palette, sizeof(SVidPreviousPalette));

	// Copy frame to buffer
	SVidSurface = SDL_CreateRGBSurfaceWithFormatFrom(
	    (unsigned char *)smk_get_video(SVidSMK),
	    SVidWidth,
	    SVidHeight,
	    8,
	    SVidWidth,
	    SDL_PIXELFORMAT_INDEX8);
	if (SVidSurface == NULL) {
		ErrSdl();
	}

	SVidPalette = SDL_AllocPalette(256);
	if (SVidPalette == NULL) {
		ErrSdl();
	}
	if (SDLC_SetSurfaceColors(SVidSurface, SVidPalette) <= -1) {
		ErrSdl();
	}

	SVidFrameEnd = SDL_GetTicks() * 1000 + SVidFrameLength;
	SDL_FillRect(GetOutputSurface(), NULL, 0x000000);
}

BOOL SVidLoadNextFrame()
{
	SVidFrameEnd += SVidFrameLength;

	if (smk_next(SVidSMK) == SMK_DONE) {
		if (!SVidLoop) {
			return false;
		}

		smk_first(SVidSMK);
	}

	return true;
}

BOOL SVidPlayContinue(void)
{
	if (smk_palette_updated(SVidSMK)) {
		SDL_Color colors[256];
		const unsigned char *palette_data = smk_get_palette(SVidSMK);

		for (int i = 0; i < 256; i++) {
			colors[i].r = palette_data[i * 3 + 0];
			colors[i].g = palette_data[i * 3 + 1];
			colors[i].b = palette_data[i * 3 + 2];
#ifndef USE_SDL1
			colors[i].a = SDL_ALPHA_OPAQUE;
#endif

			orig_palette[i].r = palette_data[i * 3 + 0];
			orig_palette[i].g = palette_data[i * 3 + 1];
			orig_palette[i].b = palette_data[i * 3 + 2];
		}
		memcpy(logical_palette, orig_palette, sizeof(logical_palette));

		if (SDLC_SetSurfaceAndPaletteColors(SVidSurface, SVidPalette, colors, 0, 256) <= -1) {
			SDL_Log(SDL_GetError());
			return false;
		}
	}

	if (SDL_GetTicks() * 1000 >= SVidFrameEnd) {
		return SVidLoadNextFrame(); // Skip video and audio if the system is to slow
	}

	if (HaveAudio()) {
#if SDL_VERSION_ATLEAST(2, 0, 4)
		if (SDL_QueueAudio(deviceId, smk_get_audio(SVidSMK, 0), smk_get_audio_size(SVidSMK, 0)) <= -1) {
			SDL_Log(SDL_GetError());
			return false;
		}
#else
	sVidAudioQueue->Enqueue(smk_get_audio(SVidSMK, 0), smk_get_audio_size(SVidSMK, 0));
#endif
	}

	if (SDL_GetTicks() * 1000 >= SVidFrameEnd) {
		return SVidLoadNextFrame(); // Skip video if the system is to slow
	}

#ifndef USE_SDL1
	if (renderer) {
		if (SDL_BlitSurface(SVidSurface, NULL, GetOutputSurface(), NULL) <= -1) {
			SDL_Log(SDL_GetError());
			return false;
		}
	} else
#endif
	{
		auto *output_surface = GetOutputSurface();
		int factor;
		int wFactor = output_surface->w / SVidWidth;
		int hFactor = output_surface->h / SVidHeight;
		if (wFactor > hFactor && (unsigned int)output_surface->h > SVidHeight) {
			factor = hFactor;
		} else {
			factor = wFactor;
		}
		const int scaledW = SVidWidth * factor;
		const int scaledH = SVidHeight * factor;

		SDL_Rect pal_surface_offset = {
			static_cast<decltype(SDL_Rect().x)>((output_surface->w - scaledW) / 2),
			static_cast<decltype(SDL_Rect().y)>((output_surface->h - scaledH) / 2),
			static_cast<decltype(SDL_Rect().w)>(scaledW),
			static_cast<decltype(SDL_Rect().h)>(scaledH)
		};
		if (factor == 1) {
			if (SDL_BlitSurface(SVidSurface, nullptr, output_surface, &pal_surface_offset) <= -1) {
				ErrSdl();
			}
		} else {
#ifdef USE_SDL1
			SDL_Surface *tmp = SDL_ConvertSurface(SVidSurface, window->format, 0);
#else
			Uint32 format = SDL_GetWindowPixelFormat(window);
			SDL_Surface *tmp = SDL_ConvertSurfaceFormat(SVidSurface, format, 0);
#endif
			if (SDL_BlitScaled(tmp, nullptr, output_surface, &pal_surface_offset) <= -1) {
				SDL_Log(SDL_GetError());
				return false;
			}
			SDL_FreeSurface(tmp);
		}
	}

	RenderPresent();

	double now = SDL_GetTicks() * 1000;
	if (now < SVidFrameEnd) {
		SDL_Delay((SVidFrameEnd - now) / 1000); // wait with next frame if the system is to fast
	}

	return SVidLoadNextFrame();
}

void SVidPlayEnd(HANDLE video)
{
	if (HaveAudio()) {
#if SDL_VERSION_ATLEAST(2, 0, 4)
		SDL_ClearQueuedAudio(deviceId);
		SDL_CloseAudioDevice(deviceId);
		deviceId = 0;
#else
		SDL_CloseAudio();
		sVidAudioQueue->Clear();
#endif
		SVidRestartMixer();
	}

	if (SVidSMK)
		smk_close(SVidSMK);

	if (SVidBuffer) {
		mem_free_dbg(SVidBuffer);
		SVidBuffer = NULL;
	}

	SDL_FreePalette(SVidPalette);
	SVidPalette = NULL;

	SDL_FreeSurface(SVidSurface);
	SVidSurface = NULL;

	SFileCloseFile(video);
	video = NULL;

	memcpy(orig_palette, SVidPreviousPalette, sizeof(orig_palette));
#ifndef USE_SDL1
	if (renderer) {
		SDL_DestroyTexture(texture);
		texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGB888, SDL_TEXTUREACCESS_STREAMING, SCREEN_WIDTH, SCREEN_HEIGHT);
		if (texture == NULL) {
			ErrSdl();
		}
		if (renderer && SDL_RenderSetLogicalSize(renderer, SCREEN_WIDTH, SCREEN_HEIGHT) <= -1) {
			ErrSdl();
		}
	}
#else
	if (IsSVidVideoMode) SetVideoModeToPrimary();
#endif
}

DWORD SErrGetLastError()
{
	return nLastError;
}

void SErrSetLastError(DWORD dwErrCode)
{
	nLastError = dwErrCode;
}

int SStrCopy(char *dest, const char *src, int max_length)
{
	strncpy(dest, src, max_length);
	return strlen(dest);
}

BOOL SFileSetBasePath(char *path)
{
	strncpy(SBasePath, path, DVL_MAX_PATH);
	return true;
}

BOOL SFileEnableDirectAccess(BOOL enable)
{
	directFileAccess = enable;
	return true;
}
}