#include <cstdio>

 #include <cctype>

 #include <cstdlib>

 #include <cstring>

 #include <cassert>

 #include <algorithm>

 

 using namespace std;

 

 #ifdef HAVE_STRINGS_H

 #   include <strings.h>

 #endif

 

 #if defined(__unix) || defined(__linux) || defined(__sun) || defined(__DJGPP)

 #   include <unistd.h>

 #   include <sys/types.h>

 #   include <sys/stat.h>

 #   include <climits>

 #   define stricmp strcasecmp

 // FIXME: this is wrong, but we don't want buffer overflow

 #   if defined _MAX_PATH

 #       undef _MAX_PATH

 //#       define _MAX_PATH 128

 #       define _MAX_PATH 260

 #   endif

 #endif

 

 #ifdef WIN32

 #   include <io.h>

 #   ifndef W_OK

 #       define W_OK 2

 #   endif

 #   define ftruncate chsize

 #endif

 

 #include "movie.h"

 #include "System.h"

 #include "../gba/GBA.h"

 #include "../gba/GBAGlobals.h"

 #include "../gba/RTC.h"

 #include "../gb/GB.h"

 #include "../gb/gbGlobals.h"

 #include "inputGlobal.h"

 #include "unzip.h"

 #include "Util.h"

 

 #include "vbalua.h"

 

 #if (defined(WIN32) && !defined(SDL))

 #   include "../win32/stdafx.h"

 #   include "../win32/MainWnd.h"

 #   include "../win32/VBA.h"

 #   include "../win32/WinMiscUtil.h"

 #endif

 

 extern int emulating; // from system.cpp

 extern u16 currentButtons[4];     // from System.cpp

 extern u16 lastKeys;

 

 SMovie Movie;

 bool   loadingMovie = false;

 

 // probably bad idea to have so many global variables, but I hate to recompile almost everything after editing VBA.h

 bool autoConvertMovieWhenPlaying = false;

 

 static u16 initialInputs[4] = { 0 };

 

 static bool resetSignaled	  = false;

 static bool resetSignaledLast = false;

 

 static int prevEmulatorType, prevBorder, prevWinBorder, prevBorderAuto;

 

 // little-endian integer pop/push functions:

 static inline uint32 Pop32(const uint8 * &ptr)

 {

 	uint32 v = (ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24));

 	ptr += 4;

 	return v;

 }

 

 static inline uint16 Pop16(const uint8 * &ptr) /* const version */

 {

 	uint16 v = (ptr[0] | (ptr[1] << 8));

 	ptr += 2;

 	return v;

 }

 

 static inline uint16 Pop16(uint8 * &ptr) /* non-const version */

 {

 	uint16 v = (ptr[0] | (ptr[1] << 8));

 	ptr += 2;

 	return v;

 }

 

 static inline uint8 Pop8(const uint8 * &ptr)

 {

 	return *(ptr)++;

 }

 

 static inline void Push32(uint32 v, uint8 * &ptr)

 {

 	ptr[0] = (uint8)(v & 0xff);

 	ptr[1] = (uint8)((v >> 8) & 0xff);

 	ptr[2] = (uint8)((v >> 16) & 0xff);

 	ptr[3] = (uint8)((v >> 24) & 0xff);

 	ptr	  += 4;

 }

 

 static inline void Push16(uint16 v, uint8 * &ptr)

 {

 	ptr[0] = (uint8)(v & 0xff);

 	ptr[1] = (uint8)((v >> 8) & 0xff);

 	ptr	  += 2;

 }

 

 static inline void Push8(uint8 v, uint8 * &ptr)

 {

 	*ptr++ = v;

 }

 

 // little-endian integer read/write functions:

 static inline uint16 Read16(const uint8 *ptr)

 {

 	return ptr[0] | (ptr[1] << 8);

 }

 

 static inline void Write16(uint16 v, uint8 *ptr)

 {

 	ptr[0] = uint8(v & 0xff);

 	ptr[1] = uint8((v >> 8) & 0xff);

 }

 

 static long file_length(FILE *fp)

 {

 	long cur_pos = ftell(fp);

 	fseek(fp, 0, SEEK_END);

 	long length = ftell(fp);

 	fseek(fp, cur_pos, SEEK_SET);

 	return length;

 }

 

 static int bytes_per_frame(SMovie &mov)

 {

 	int num_controllers = 0;

 

 	for (int i = 0; i < MOVIE_NUM_OF_POSSIBLE_CONTROLLERS; ++i)

 		if (mov.header.controllerFlags & MOVIE_CONTROLLER(i))

 			++num_controllers;

 

 	return CONTROLLER_DATA_SIZE * num_controllers;

 }

 

 static void reserve_buffer_space(uint32 space_needed)

 {

 	if (space_needed > Movie.inputBufferSize)

 	{

 		uint32 ptr_offset	= Movie.inputBufferPtr - Movie.inputBuffer;

 		uint32 alloc_chunks = (space_needed - 1) / BUFFER_GROWTH_SIZE + 1;

 		uint32 old_size     = Movie.inputBufferSize;

 		Movie.inputBufferSize = BUFFER_GROWTH_SIZE * alloc_chunks;

 		Movie.inputBuffer	  = (uint8 *)realloc(Movie.inputBuffer, Movie.inputBufferSize);

 		// FIXME: this only fixes the random input problem during dma-frame-skip, but not the skip

 		memset(Movie.inputBuffer + old_size, 0, Movie.inputBufferSize - old_size);

 		Movie.inputBufferPtr  = Movie.inputBuffer + ptr_offset;

 	}

 }

 

 static int read_movie_header(FILE *file, SMovie &movie)

 {

 	assert(file != NULL);

 	assert(VBM_HEADER_SIZE == sizeof(SMovieFileHeader)); // sanity check on the header type definition

 

 	uint8 headerData [VBM_HEADER_SIZE];

 

 	if (fread(headerData, 1, VBM_HEADER_SIZE, file) != VBM_HEADER_SIZE)

 		return MOVIE_WRONG_FORMAT;  // if we failed to read in all VBM_HEADER_SIZE bytes of the header

 

 	const uint8 *	  ptr	 = headerData;

 	SMovieFileHeader &header = movie.header;

 

 	header.magic = Pop32(ptr);

 	if (header.magic != VBM_MAGIC)

 		return MOVIE_WRONG_FORMAT;

 

 	header.version = Pop32(ptr);

 	if (header.version != VBM_VERSION)

 		return MOVIE_WRONG_VERSION;

 

 	header.uid = Pop32(ptr);

 	header.length_frames  = Pop32(ptr) + 1;    // HACK: add 1 to the length for compatibility

 	header.rerecord_count = Pop32(ptr);

 

 	header.startFlags	   = Pop8(ptr);

 	header.controllerFlags = Pop8(ptr);

 	header.typeFlags	   = Pop8(ptr);

 	header.optionFlags	   = Pop8(ptr);

 

 	header.saveType		  = Pop32(ptr);

 	header.flashSize	  = Pop32(ptr);

 	header.gbEmulatorType = Pop32(ptr);

 

 	for (int i = 0; i < 12; i++)

 		header.romTitle[i] = Pop8(ptr);

 

 	header.minorVersion = Pop8(ptr);

 

 	header.romCRC = Pop8(ptr);

 	header.romOrBiosChecksum = Pop16(ptr);

 	header.romGameCode		 = Pop32(ptr);

 

 	header.offset_to_savestate		 = Pop32(ptr);

 	header.offset_to_controller_data = Pop32(ptr);

 

 	return MOVIE_SUCCESS;

 }

 

 static void write_movie_header(FILE *file, const SMovie &movie)

 {

 	assert(ftell(file) == 0); // we assume file points to beginning of movie file

 

 	uint8  headerData [VBM_HEADER_SIZE];

 	uint8 *ptr = headerData;

 	const SMovieFileHeader &header = movie.header;

 

 	Push32(header.magic, ptr);

 	Push32(header.version, ptr);

 

 	Push32(header.uid, ptr);

 	Push32(header.length_frames - 1, ptr);     // HACK: reduce the length by 1 for compatibility with certain faulty old tools

 	                                           // like TME

 	Push32(header.rerecord_count, ptr);

 

 	Push8(header.startFlags, ptr);

 	Push8(header.controllerFlags, ptr);

 	Push8(header.typeFlags, ptr);

 	Push8(header.optionFlags, ptr);

 

 	Push32(header.saveType, ptr);

 	Push32(header.flashSize, ptr);

 	Push32(header.gbEmulatorType, ptr);

 

 	for (int i = 0; i < 12; ++i)

 		Push8(header.romTitle[i], ptr);

 

 	Push8(header.minorVersion, ptr);

 

 	Push8(header.romCRC, ptr);

 	Push16(header.romOrBiosChecksum, ptr);

 	Push32(header.romGameCode, ptr);

 

 	Push32(header.offset_to_savestate, ptr);

 	Push32(header.offset_to_controller_data, ptr);

 

 	fwrite(headerData, 1, VBM_HEADER_SIZE, file);

 }

 

 static void flush_movie_header()

 {

 	assert(Movie.file != 0 && "logical error!");

 	if (!Movie.file)

 		return;

 

 	long originalPos = ftell(Movie.file);

 

 	// (over-)write the header

 	fseek(Movie.file, 0, SEEK_SET);

 	write_movie_header(Movie.file, Movie);

 

 	fflush(Movie.file);

 

 	fseek(Movie.file, originalPos, SEEK_SET);

 }

 

 static void flush_movie_frames()

 {

 	assert(Movie.file && "logical error!");

 	if (!Movie.file)

 		return;

 

 	long originalPos = ftell(Movie.file);

 

 	// overwrite the controller data

 	fseek(Movie.file, Movie.header.offset_to_controller_data, SEEK_SET);

 	fwrite(Movie.inputBuffer, 1, Movie.bytesPerFrame * Movie.header.length_frames, Movie.file);

 

 	fflush(Movie.file);

 

 	fseek(Movie.file, originalPos, SEEK_SET);

 }

 

 static void truncate_movie(long length)

 {

 	// truncate movie to length

 	// NOTE: it's certain that the savestate block is never after the

 	//       controller data block, because the VBM format decrees it.

 

 	assert(Movie.file && length >= 0);

 	if (!Movie.file || length < 0)

 		return;

 

 	assert(Movie.header.offset_to_savestate <= Movie.header.offset_to_controller_data);

 	if (Movie.header.offset_to_savestate > Movie.header.offset_to_controller_data)

 		return;

 

 	Movie.header.length_frames = length;

 	flush_movie_header();

 	const long truncLen = long(Movie.header.offset_to_controller_data + Movie.bytesPerFrame * length);

 	if (file_length(Movie.file) != truncLen)

 	{

 		ftruncate(fileno(Movie.file), truncLen);

 	}

 }

 

 static void remember_input_state()

 {

 	for (int i = 0; i < MOVIE_NUM_OF_POSSIBLE_CONTROLLERS; ++i)

 	{

 		if (systemCartridgeType == 0)

 		{

 			initialInputs[i] = u16(~P1 & 0x03FF);

 		}

 		else

 		{

 			extern int32 gbJoymask[4];

 			for (int i = 0; i < 4; ++i)

 				initialInputs[i] = u16(gbJoymask[i] & 0xFFFF);

 		}

 	}

 }

 

 static void change_state(MovieState new_state)

 {

 #if (defined(WIN32) && !defined(SDL))

 	theApp.frameSearching	   = false;

 	theApp.frameSearchSkipping = false;

 #endif

 

 	if (new_state == MOVIE_STATE_NONE)

 	{

 		Movie.pauseFrame = -1;

 

 		if (Movie.state == MOVIE_STATE_NONE)

 			return;

 

 		truncate_movie(Movie.header.length_frames);

 

 		fclose(Movie.file);

 		Movie.file		   = NULL;

 		Movie.currentFrame = 0;

 #if (defined(WIN32) && !defined(SDL))

 		// undo changes to border settings

 		{

 			gbBorderOn = prevBorder;

 			theApp.winGbBorderOn = prevWinBorder;

 			gbBorderAutomatic	 = prevBorderAuto;

 			systemGbBorderOn();

 		}

 #endif

 		gbEmulatorType = prevEmulatorType;

 

 		extern int32 gbDMASpeedVersion;

 		gbDMASpeedVersion = 1;

 

 		extern int32 gbEchoRAMFixOn;

 		gbEchoRAMFixOn = 1;

 

 		gbNullInputHackTempEnabled = gbNullInputHackEnabled;

 

 		if (Movie.inputBuffer)

 		{

 			free(Movie.inputBuffer);

 			Movie.inputBuffer = NULL;

 		}

 	}

 	else if (new_state == MOVIE_STATE_PLAY)

 	{

 		assert(Movie.file);

 

 		// this would cause problems if not dealt with

 		if (Movie.currentFrame >= Movie.header.length_frames)

 		{

 			new_state = MOVIE_STATE_END;

 			Movie.inputBufferPtr = Movie.inputBuffer + Movie.bytesPerFrame * Movie.header.length_frames;

 		}

 	}

 	else if (new_state == MOVIE_STATE_RECORD)

 	{

 		assert(Movie.file);

 

 		// this would cause problems if not dealt with

 		if (Movie.currentFrame > Movie.header.length_frames)

 		{

 			new_state = MOVIE_STATE_END;

 			Movie.inputBufferPtr = Movie.inputBuffer + Movie.bytesPerFrame * Movie.header.length_frames;

 		}

 

 		fseek(Movie.file, Movie.header.offset_to_controller_data + Movie.bytesPerFrame * Movie.currentFrame, SEEK_SET);

 	}

 

 	if (new_state == MOVIE_STATE_END && Movie.state != MOVIE_STATE_END)

 	{

 #if defined(SDL)		

 		systemClearJoypads();

 #endif

 		systemScreenMessage("Movie end");

 	}

 

 	Movie.state = new_state;

 

 	// checking for movie end

 	bool willPause = false;

 

 	// if the movie's been set to pause at a certain frame

 	if (Movie.state != MOVIE_STATE_NONE && Movie.pauseFrame >= 0 && Movie.currentFrame == (uint32)Movie.pauseFrame)

 	{

 		Movie.pauseFrame = -1;

 		willPause		 = true;

 	}

 

 	if (Movie.state == MOVIE_STATE_END)

 	{

 		if (Movie.currentFrame == Movie.header.length_frames)

 		{

 #if (defined(WIN32) && !defined(SDL))

 			if (theApp.movieOnEndPause)

 			{

 				willPause = true;

 			}

 #else

 			// SDL FIXME

 #endif

 

 #if (defined(WIN32) && !defined(SDL))

 			switch (theApp.movieOnEndBehavior)

 			{

 			case 1:

 				// the old behavior

 				//VBAMovieRestart();

 				break;

 			case 2:

 #else

 			// SDL FIXME

 #endif

 				if (Movie.RecordedThisSession)

 				{

 					// if user has been recording this movie since the last time it started playing,

 					// they probably don't want the movie to end now during playback,

 					// so switch back to recording when it reaches the end

 					VBAMovieSwitchToRecording();

 					systemScreenMessage("Recording resumed");

 					willPause = true;

 				}

 #if (defined(WIN32) && !defined(SDL))

 				break;

 			case 3:

 				// keep open

 				break;

 			case 0:

 				// fall through

 			default:

 				// close movie

 				//VBAMovieStop(false);

 				break;

 			}

 #else

 				// SDL FIXME

 #endif

 		}

 #if 1

 		else if (Movie.currentFrame > Movie.header.length_frames)

 		{

 #if (defined(WIN32) && !defined(SDL))

 			switch (theApp.movieOnEndBehavior)

 			{

 			case 1:

 				// FIXME: this should be delayed till the current frame ends

 				VBAMovieRestart();

 				break;

 			case 2:

 				// nothing

 				break;

 			case 3:

 				// keep open

 				break;

 			case 0:

 				// fall through

 			default:

 				// close movie

 				VBAMovieStop(false);

 				break;

 			}

 #else

 			// SDLFIXME

 #endif

 		}

 #endif

 	} // end if (Movie.state == MOVIE_STATE_END)

 

 	if (willPause)

 	{

 		systemSetPause(true);

 	}

 }

 

 void VBAMovieInit()

 {

 	memset(&Movie, 0, sizeof(Movie));

 	Movie.state		 = MOVIE_STATE_NONE;

 	Movie.pauseFrame = -1;

 

 	resetSignaled	  = false;

 	resetSignaledLast = false;

 }

 

 void VBAMovieGetRomInfo(const SMovie &movieInfo, char romTitle [12], uint32 &romGameCode, uint16 &checksum, uint8 &crc)

 {

 	if (systemCartridgeType == 0) // GBA

 	{

 		extern u8 *bios, *rom;

 		memcpy(romTitle, &rom[0xa0], 12); // GBA TITLE

 		memcpy(&romGameCode, &rom[0xac], 4); // GBA ROM GAME CODE

 		if ((movieInfo.header.optionFlags & MOVIE_SETTING_USEBIOSFILE) != 0)

 			checksum = utilCalcBIOSChecksum(bios, 4);  // GBA BIOS CHECKSUM

 		else

 			checksum = 0;

 		crc = rom[0xbd]; // GBA ROM CRC

 	}

 	else // non-GBA

 	{

 		extern u8 *gbRom;

 		memcpy(romTitle, &gbRom[0x134], 12); // GB TITLE (note this can be 15 but is truncated to 12)

 		romGameCode = (uint32)gbRom[0x146]; // GB ROM UNIT CODE

 

 		checksum = (gbRom[0x14e] << 8) | gbRom[0x14f]; // GB ROM CHECKSUM, read from big-endian

 		crc		 = gbRom[0x14d]; // GB ROM CRC

 	}

 }

 

 #ifdef SDL

 static void GetBatterySaveName(char *buffer)

 {

 	extern char batteryDir[2048], filename[2048];     // from SDL.cpp

 	extern char *sdlGetFilename(char *name);     // from SDL.cpp

 	if (batteryDir[0])

 		sprintf(buffer, "%s/%s.sav", batteryDir, sdlGetFilename(filename));

 	else

 		sprintf(buffer, "%s.sav", filename);

 }

 

 #endif

 

 static void SetPlayEmuSettings()

 {

 	prevEmulatorType = gbEmulatorType;

 	gbEmulatorType	 = Movie.header.gbEmulatorType;

 

 #if (defined(WIN32) && !defined(SDL))

 //    theApp.removeIntros   = false;

 	theApp.skipBiosFile = (Movie.header.optionFlags & MOVIE_SETTING_SKIPBIOSFILE) != 0;

 	theApp.useBiosFile	= (Movie.header.optionFlags & MOVIE_SETTING_USEBIOSFILE) != 0;

 #else

 	extern int	 saveType, sdlRtcEnable, sdlFlashSize;   // from SDL.cpp

 	extern bool8 useBios, skipBios, removeIntros;     // from SDL.cpp

 	useBios		 = (Movie.header.optionFlags & MOVIE_SETTING_USEBIOSFILE) != 0;

 	skipBios	 = (Movie.header.optionFlags & MOVIE_SETTING_SKIPBIOSFILE) != 0;

 	removeIntros = false /*(Movie.header.optionFlags & MOVIE_SETTING_REMOVEINTROS) != 0*/;

 #endif

 

 	extern void SetPrefetchHack(bool);

 	if (systemCartridgeType == 0)    // lag disablement applies only to GBA

 		SetPrefetchHack((Movie.header.optionFlags & MOVIE_SETTING_LAGHACK) != 0);

 

 	gbNullInputHackTempEnabled = ((Movie.header.optionFlags & MOVIE_SETTING_GBINPUTHACK) != 0);

 

 	// some GB/GBC games depend on the sound rate, so just use the highest one

 	systemSoundSetQuality(1);

 	useOldFrameTiming = false;

 

 	extern int32 gbDMASpeedVersion;

 	if ((Movie.header.optionFlags & MOVIE_SETTING_GBCFF55FIX) != 0)

 		gbDMASpeedVersion = 1;

 	else

 		gbDMASpeedVersion = 0;     // old CGB HDMA5 timing was used

 

 	extern int32 gbEchoRAMFixOn;

 	if ((Movie.header.optionFlags & MOVIE_SETTING_GBECHORAMFIX) != 0)

 		gbEchoRAMFixOn = 1;

 	else

 		gbEchoRAMFixOn = 0;

 

 #if (defined(WIN32) && !defined(SDL))

 	rtcEnable((Movie.header.optionFlags & MOVIE_SETTING_RTCENABLE) != 0);

 	theApp.winSaveType	= Movie.header.saveType;

 	theApp.winFlashSize = Movie.header.flashSize;

 

 	prevBorder	   = gbBorderOn;

 	prevWinBorder  = theApp.winGbBorderOn;

 	prevBorderAuto = gbBorderAutomatic;

 	if ((gbEmulatorType == 2 || gbEmulatorType == 5)

 	    && !theApp.hideMovieBorder) // games played in SGB mode can have a border

 	{

 		gbBorderOn = true;

 		theApp.winGbBorderOn = true;

 		gbBorderAutomatic	 = false;

 	}

 	else

 	{

 		gbBorderOn = false;

 		theApp.winGbBorderOn = false;

 		gbBorderAutomatic	 = false;

 		if (theApp.hideMovieBorder)

 		{

 			theApp.hideMovieBorder = false;

 			prevBorder = false;     // it might be expected behaviour that it stays hidden after the movie

 		}

 	}

 	systemGbBorderOn();

 #else

 	sdlRtcEnable = (Movie.header.optionFlags & MOVIE_SETTING_RTCENABLE) != 0;

 	saveType	 = Movie.header.saveType;

 	sdlFlashSize = Movie.header.flashSize;

 #endif

 }

 

 static void HardResetAndSRAMClear()

 {

 #if (defined(WIN32) && !defined(SDL))

 	winEraseBatteryFile(); // delete the damn SRAM file and keep it from being resurrected from RAM

 	MainWnd *temp = ((MainWnd *)theApp.m_pMainWnd);

 	if (!temp->winFileRun(true)) // restart running the game

 	{

 		temp->winFileClose();

 	}

 #else

 	char fname [1024];

 	GetBatterySaveName(fname);

 	remove(fname);     // delete the damn SRAM file

 

 	// Henceforth, emuCleanUp means "clear out SRAM"

 	//theEmulator.emuCleanUp();     // keep it from being resurrected from RAM <--This is wrong, it'll deallocate all variables --Felipe

 

 	/// FIXME the correct SDL code to call for a full restart isn't in a function yet

 	theEmulator.emuReset(false);

 #endif

 }

 

 int VBAMovieOpen(const char *filename, bool8 read_only)

 {

 	loadingMovie = true;

 	uint8 movieReadOnly = read_only ? 1 : 0;

 

 	FILE * file;

 	STREAM stream;

 	int	   result;

 	int	   fn;

 

 	char movie_filename[_MAX_PATH];

 #ifdef WIN32

 	_fullpath(movie_filename, filename, _MAX_PATH);

 #else

 	// SDL FIXME: convert to fullpath

 	strncpy(movie_filename, filename, _MAX_PATH);

 	movie_filename[_MAX_PATH - 1] = '\0';

 #endif

 

 	if (movie_filename[0] == '\0')

 	{ loadingMovie = false; return MOVIE_FILE_NOT_FOUND; }

 

 	if (!emulating)

 	{ loadingMovie = false; return MOVIE_UNKNOWN_ERROR; }

 

 //	bool alreadyOpen = (Movie.file != NULL && _stricmp(movie_filename, Movie.filename) == 0);

 

 //	if (alreadyOpen)

 	change_state(MOVIE_STATE_NONE);     // have to stop current movie before trying to re-open it

 

 	if (!(file = fopen(movie_filename, "rb+")))

 		if (!(file = fopen(movie_filename, "rb")))

 		{ loadingMovie = false; return MOVIE_FILE_NOT_FOUND; }

 	//else

 	//	movieReadOnly = 2; // we have to open the movie twice, no need to do this both times

 

 //	if (!alreadyOpen)

 //		change_state(MOVIE_STATE_NONE); // stop current movie when we're able to open the other one

 //

 //	if (!(file = fopen(movie_filename, "rb+")))

 //		if(!(file = fopen(movie_filename, "rb")))

 //			{loadingMovie = false; return MOVIE_FILE_NOT_FOUND;}

 //		else

 //			movieReadOnly = 2;

 

 	// clear out the current movie

 	VBAMovieInit();

 

 	// read header

 	if ((result = read_movie_header(file, Movie)) != MOVIE_SUCCESS)

 	{

 		fclose(file);

 		{ loadingMovie = false; return result; }

 	}

 

 	// set emulator settings that make the movie more likely to stay synchronized

 	SetPlayEmuSettings();

 

 //	extern bool systemLoadBIOS();

 //	if (!systemLoadBIOS())

 //	{ loadingMovie = false; return MOVIE_UNKNOWN_ERROR; }

 

 	// read the metadata / author info from file

 	fread(Movie.authorInfo, 1, MOVIE_METADATA_SIZE, file);

 	fn = dup(fileno(file)); // XXX: why does this fail?? it returns -1 but errno == 0

 	fclose(file);

 

 	// apparently this lseek is necessary

 	lseek(fn, Movie.header.offset_to_savestate, SEEK_SET);

 	if (!(stream = utilGzReopen(fn, "rb")))

 		if (!(stream = utilGzOpen(movie_filename, "rb")))

 		{ loadingMovie = false; return MOVIE_FILE_NOT_FOUND; }

 		else

 			fn = dup(fileno(file));

 	// in case the above dup failed but opening the file normally doesn't fail

 

 	if (Movie.header.startFlags & MOVIE_START_FROM_SNAPSHOT)

 	{

 		// load the snapshot

 		result = theEmulator.emuReadStateFromStream(stream) ? MOVIE_SUCCESS : MOVIE_WRONG_FORMAT;

 

 		// FIXME: Kludge for conversion

 		remember_input_state();

 	}

 	else if (Movie.header.startFlags & MOVIE_START_FROM_SRAM)

 	{

 		// 'soft' reset:

 		theEmulator.emuReset(false);

 

 		// load the SRAM

 		result = theEmulator.emuReadBatteryFromStream(stream) ? MOVIE_SUCCESS : MOVIE_WRONG_FORMAT;

 	}

 	else

 	{

 		HardResetAndSRAMClear();

 	}

 

 	utilGzClose(stream);

 

 	if (result != MOVIE_SUCCESS)

 	{ loadingMovie = false; return result; }

 

 //	if (!(file = fopen(movie_filename, /*read_only ? "rb" :*/ "rb+"))) // want to be able to switch out of read-only later

 //	{

 //		if(!Movie.readOnly || !(file = fopen(movie_filename, "rb"))) // try read-only if failed

 //			return MOVIE_FILE_NOT_FOUND;

 //	}

 	if (!(file = fopen(movie_filename, "rb+")))

 		if (!(file = fopen(movie_filename, "rb")))

 		{ loadingMovie = false; return MOVIE_FILE_NOT_FOUND; }

 		else

 			movieReadOnly = 2;

 

 	// recalculate length of movie from the file size

 	Movie.bytesPerFrame = bytes_per_frame(Movie);

 	fseek(file, 0, SEEK_END);

 	long fileSize = ftell(file);

 	Movie.header.length_frames = (fileSize - Movie.header.offset_to_controller_data) / Movie.bytesPerFrame;

 

 	if (fseek(file, Movie.header.offset_to_controller_data, SEEK_SET))

 	{ fclose(file); loadingMovie = false; return MOVIE_WRONG_FORMAT; }

 

 	strcpy(Movie.filename, movie_filename);

 	Movie.file = file;

 	Movie.inputBufferPtr	  = Movie.inputBuffer;

 	Movie.currentFrame		  = 0;

 	Movie.readOnly			  = movieReadOnly;

 	Movie.RecordedThisSession = false;

 

 	// read controller data

 	uint32 to_read = Movie.bytesPerFrame * Movie.header.length_frames;

 	reserve_buffer_space(to_read);

 	fread(Movie.inputBuffer, 1, to_read, file);

 

 	change_state(MOVIE_STATE_PLAY);

 

 	char messageString[64] = "Movie ";

 	bool converted		   = false;

 	if (autoConvertMovieWhenPlaying)

 	{

 		int result = VBAMovieConvertCurrent();

 		if (result == MOVIE_SUCCESS)

 			strcat(messageString, "converted and ");

 		else if (result == MOVIE_WRONG_VERSION)

 			strcat(messageString, "higher revision ");

 	}

 

 	if (Movie.state == MOVIE_STATE_PLAY)

 		strcat(messageString, "replaying ");

 	else

 		strcat(messageString, "finished ");

 	if (Movie.readOnly)

 		strcat(messageString, "(read)");

 	else

 		strcat(messageString, "(edit)");

 	systemScreenMessage(messageString);

 

 	VBAUpdateButtonPressDisplay();

 	VBAUpdateFrameCountDisplay();

 	systemRefreshScreen();

 

 	{ loadingMovie = false; return MOVIE_SUCCESS; }

 }

 

 static void SetRecordEmuSettings()

 {

 	Movie.header.optionFlags = 0;

 #if (defined(WIN32) && !defined(SDL))

 	if (theApp.useBiosFile)

 		Movie.header.optionFlags |= MOVIE_SETTING_USEBIOSFILE;

 	if (theApp.skipBiosFile)

 		Movie.header.optionFlags |= MOVIE_SETTING_SKIPBIOSFILE;

 	if (rtcIsEnabled())

 		Movie.header.optionFlags |= MOVIE_SETTING_RTCENABLE;

 	Movie.header.saveType  = theApp.winSaveType;

 	Movie.header.flashSize = theApp.winFlashSize;

 #else

 	extern int	 saveType, sdlRtcEnable, sdlFlashSize;   // from SDL.cpp

 	extern bool8 useBios, skipBios;     // from SDL.cpp

 	if (useBios)

 		Movie.header.optionFlags |= MOVIE_SETTING_USEBIOSFILE;

 	if (skipBios)

 		Movie.header.optionFlags |= MOVIE_SETTING_SKIPBIOSFILE;

 	if (sdlRtcEnable)

 		Movie.header.optionFlags |= MOVIE_SETTING_RTCENABLE;

 	Movie.header.saveType  = saveType;

 	Movie.header.flashSize = sdlFlashSize;

 #endif

 	prevEmulatorType = Movie.header.gbEmulatorType = gbEmulatorType;

 

 	if (!memLagTempEnabled)

 		Movie.header.optionFlags |= MOVIE_SETTING_LAGHACK;

 

 	if (gbNullInputHackTempEnabled)

 		Movie.header.optionFlags |= MOVIE_SETTING_GBINPUTHACK;

 

 	Movie.header.optionFlags |= MOVIE_SETTING_GBCFF55FIX;

 	extern int32 gbDMASpeedVersion;

 	gbDMASpeedVersion = 1;

 

 	Movie.header.optionFlags |= MOVIE_SETTING_GBECHORAMFIX;

 	extern int32 gbEchoRAMFixOn;

 	gbEchoRAMFixOn = 1;

 

 	// some GB/GBC games depend on the sound rate, so just use the highest one

 	systemSoundSetQuality(1);

 

 	useOldFrameTiming = false;

 

 #if (defined(WIN32) && !defined(SDL))

 //    theApp.removeIntros   = false;

 

 	prevBorder	   = gbBorderOn;

 	prevWinBorder  = theApp.winGbBorderOn;

 	prevBorderAuto = gbBorderAutomatic;

 	if (gbEmulatorType == 2 || gbEmulatorType == 5)     // only games played in SGB mode will have a border

 	{

 		gbBorderOn = true;

 		theApp.winGbBorderOn = true;

 		gbBorderAutomatic	 = false;

 	}

 	else

 	{

 		gbBorderOn = false;

 		theApp.winGbBorderOn = false;

 		gbBorderAutomatic	 = false;

 	}

 	systemGbBorderOn();

 #else

 	/// SDLFIXME

 #endif

 }

 

 uint16 VBAMovieGetCurrentInputOf(int controllerNum, bool normalOnly)

 {

 	if (controllerNum < 0 || controllerNum >= MOVIE_NUM_OF_POSSIBLE_CONTROLLERS)

 		return 0;

 

 	return normalOnly ? (currentButtons[controllerNum] & BUTTON_REGULAR_MASK) : currentButtons[controllerNum];

 }

 

 int VBAMovieCreate(const char *filename, const char *authorInfo, uint8 startFlags, uint8 controllerFlags, uint8 typeFlags)

 {

 	// make sure at least one controller is enabled

 	if ((controllerFlags & MOVIE_CONTROLLERS_ANY_MASK) == 0)

 		return MOVIE_WRONG_FORMAT;

 

 	if (!emulating)

 		return MOVIE_UNKNOWN_ERROR;

 

 	loadingMovie = true;

 

 	FILE * file;

 	STREAM stream;

 	int	   fn;

 

 	char movie_filename [_MAX_PATH];

 #ifdef WIN32

 	_fullpath(movie_filename, filename, _MAX_PATH);

 #else

 	// FIXME: convert to fullpath

 	strncpy(movie_filename, filename, _MAX_PATH);

 	movie_filename[_MAX_PATH - 1] = '\0';

 #endif

 

 	bool alreadyOpen = (Movie.file != NULL && stricmp(movie_filename, Movie.filename) == 0);

 

 	if (alreadyOpen)

 		change_state(MOVIE_STATE_NONE);  // have to stop current movie before trying to re-open it

 

 	if (movie_filename[0] == '\0')

 	{ loadingMovie = false; return MOVIE_FILE_NOT_FOUND; }

 

 	if (!(file = fopen(movie_filename, "wb")))

 	{ loadingMovie = false; return MOVIE_FILE_NOT_FOUND; }

 

 	if (!alreadyOpen)

 		change_state(MOVIE_STATE_NONE);  // stop current movie when we're able to open the other one

 

 	// clear out the current movie

 	VBAMovieInit();

 

 	// fill in the movie's header

 	Movie.header.uid   = (uint32)time(NULL);

 	Movie.header.magic = VBM_MAGIC;

 	Movie.header.version		 = VBM_VERSION;

 	Movie.header.rerecord_count	 = 0;

 	Movie.header.length_frames	 = 0;

 	Movie.header.startFlags		 = startFlags;

 	Movie.header.controllerFlags = controllerFlags;

 	Movie.header.typeFlags		 = typeFlags;

 	Movie.header.minorVersion	 = VBM_REVISION;

 

 	// set emulator settings that make the movie more likely to stay synchronized when it's later played back

 	SetRecordEmuSettings();

 

 	// set ROM and BIOS checksums and stuff

 	VBAMovieGetRomInfo(Movie, Movie.header.romTitle, Movie.header.romGameCode, Movie.header.romOrBiosChecksum, Movie.header.romCRC);

 

 	// write the header to file

 	write_movie_header(file, Movie);

 

 	// copy over the metadata / author info

 	VBAMovieSetMetadata(authorInfo);

 

 	// write the metadata / author info to file

 	fwrite(Movie.authorInfo, 1, sizeof(char) * MOVIE_METADATA_SIZE, file);

 

 	// write snapshot or SRAM if applicable

 	if (Movie.header.startFlags & MOVIE_START_FROM_SNAPSHOT

 	    || Movie.header.startFlags & MOVIE_START_FROM_SRAM)

 	{

 		Movie.header.offset_to_savestate = (uint32)ftell(file);

 

 		// close the file and reopen it as a stream:

 

 		fn = dup(fileno(file));

 		fclose(file);

 

 		if (!(stream = utilGzReopen(fn, "ab"))) // append mode to start at end, no seek necessary

 		{ loadingMovie = false; return MOVIE_FILE_NOT_FOUND; }

 

 		// write the save data:

 		if (Movie.header.startFlags & MOVIE_START_FROM_SNAPSHOT)

 		{

 			// save snapshot

 			if (!theEmulator.emuWriteStateToStream(stream))

 			{

 				utilGzClose(stream);

 				{ loadingMovie = false; return MOVIE_UNKNOWN_ERROR; }

 			}

 		}

 		else if (Movie.header.startFlags & MOVIE_START_FROM_SRAM)

 		{

 			// save SRAM

 			if (!theEmulator.emuWriteBatteryToStream(stream))

 			{

 				utilGzClose(stream);

 				{ loadingMovie = false; return MOVIE_UNKNOWN_ERROR; }

 			}

 

 			// 'soft' reset:

 			theEmulator.emuReset(false);

 		}

 

 		utilGzClose(stream);

 

 		// reopen the file and seek back to the end

 

 		if (!(file = fopen(movie_filename, "rb+")))

 		{ loadingMovie = false; return MOVIE_FILE_NOT_FOUND; }

 

 		fseek(file, 0, SEEK_END);

 	}

 	else // no snapshot or SRAM

 	{

 		HardResetAndSRAMClear();

 	}

 

 	Movie.header.offset_to_controller_data = (uint32)ftell(file);

 

 	strcpy(Movie.filename, movie_filename);

 	Movie.file = file;

 	Movie.bytesPerFrame		  = bytes_per_frame(Movie);

 	Movie.inputBufferPtr	  = Movie.inputBuffer;

 	Movie.currentFrame		  = 0;

 	Movie.readOnly			  = false;

 	Movie.RecordedThisSession = true;

 

 	change_state(MOVIE_STATE_RECORD);

 

 	systemScreenMessage("Recording movie...");

 	{ loadingMovie = false; return MOVIE_SUCCESS; }

 }

 

 void VBAUpdateButtonPressDisplay()

 {

 	uint32 keys = currentButtons[0] & BUTTON_REGULAR_RECORDING_MASK;

 

 	const static char KeyMap[]	 =  { 'A', 'B', 's', 'S', '>', '<', '^', 'v', 'R', 'L', '!', '?', '{', '}', 'v', '^' };

 	const static int  KeyOrder[] = { 5, 6, 4, 7, 0, 1, 9, 8, 3, 2, 12, 15, 13, 14, 11, 10 }; // < ^ > v   A B  L R  S s  { = } _

 	                                                                                         // ? !

 	char buffer[256];

 	sprintf(buffer, "                    ");

 

 #ifndef WIN32

 	// don't bother color-coding autofire and such

 	int i;

 	for (i = 0; i < 15; i++)

 	{

 		int j	 = KeyOrder[i];

 		int mask = (1 << (j));

 		buffer[strlen("    ") + i] = ((keys & mask) != 0) ? KeyMap[j] : ' ';

 	}

 

 	systemScreenMessage(buffer, 2, -1);

 #else

 	const bool eraseAll		= !theApp.inputDisplay;

 	uint32	   autoHeldKeys = eraseAll ? 0 : theApp.autoHold & BUTTON_REGULAR_RECORDING_MASK;

 	uint32	   autoFireKeys = eraseAll ? 0 : (theApp.autoFire | theApp.autoFire2) & BUTTON_REGULAR_RECORDING_MASK;

 	uint32	   pressedKeys	= eraseAll ? 0 : keys;

 

 	char colorList[64];

 	memset(colorList, 1, strlen(buffer));

 

 	if (!eraseAll)

 	{

 		for (int i = 0; i < 15; i++)

 		{

 			const int  j		 = KeyOrder[i];

 			const int  mask		 = (1 << (j));

 			bool	   pressed	 = (pressedKeys  & mask) != 0;

 			const bool autoHeld	 = (autoHeldKeys & mask) != 0;

 			const bool autoFired = (autoFireKeys & mask) != 0;

 			const bool erased	 = (lastKeys & mask) != 0 && (!pressed && !autoHeld && !autoFired);

 			extern int textMethod;

 			if (textMethod != 2 && (autoHeld || (autoFired && !pressed) || erased))

 			{

 				int colorNum = 1;     // default is white

 				if (autoHeld)

 					colorNum += (pressed ? 2 : 1);     // yellow if pressed, red if not

 				else if (autoFired)

 					colorNum += 5;     // blue if autofired and not currently pressed

 				else if (erased)

 					colorNum += 8;     // black on black

 

 				colorList[strlen("    ") + i] = colorNum;

 				pressed = true;

 			}

 			buffer[strlen("    ") + i] = pressed ? KeyMap[j] : ' ';

 		}

 	}

 

 	lastKeys  = currentButtons[0];

 	lastKeys |= theApp.autoHold & BUTTON_REGULAR_RECORDING_MASK;

 	lastKeys |= (theApp.autoFire | theApp.autoFire2) & BUTTON_REGULAR_RECORDING_MASK;

 

 	systemScreenMessage(buffer, 2, -1, colorList);

 #endif

 }

 

 void VBAUpdateFrameCountDisplay()

 {

 	const int MAGICAL_NUMBER = 64;  // FIXME: this won't do any better, but only to remind you of sz issues

 	char	  frameDisplayString[MAGICAL_NUMBER];

 	char	  lagFrameDisplayString[MAGICAL_NUMBER];

 	char      extraCountDisplayString[MAGICAL_NUMBER];

 

 #if (defined(WIN32) && !defined(SDL))

 	if (theApp.frameCounter)

 #else

 	/// SDL FIXME

 #endif

 	{

 		switch (Movie.state)

 		{

 		case MOVIE_STATE_PLAY:

 		case MOVIE_STATE_END:

 		{

 			sprintf(frameDisplayString, "%d / %d", Movie.currentFrame, Movie.header.length_frames);

 			if (!Movie.readOnly)

 				strcat(frameDisplayString, " (edit)");

 			break;

 		}

 		case MOVIE_STATE_RECORD:

 		{

 			sprintf(frameDisplayString, "%d (record)", Movie.currentFrame);

 			break;

 		}

 		default:

 		{

 			sprintf(frameDisplayString, "%d (no movie)", systemCounters.frameCount);

 			break;

 		}

 		}

 

 #if (defined(WIN32) && !defined(SDL))

 		if (theApp.lagCounter)

 #else

 		/// SDL FIXME

 #endif

 		{

 //			sprintf(lagFrameDisplayString, " %c %d", systemCounters.laggedLast ? '*' : '|', systemCounters.lagCount);

 			sprintf(lagFrameDisplayString, " | %d%s", systemCounters.lagCount, systemCounters.laggedLast ? " *" : "");

 			strcat(frameDisplayString, lagFrameDisplayString);

 		}

 

 #if (defined(WIN32) && !defined(SDL))

 		if (theApp.extraCounter)

 #else

 		/// SDL FIXME

 #endif

 		{

 			sprintf(extraCountDisplayString, " | %d", systemCounters.frameCount - systemCounters.extraCount);

 			strcat(frameDisplayString, extraCountDisplayString);

 		}

 	}

 #if (defined(WIN32) && !defined(SDL))

 	else

 	{

 		frameDisplayString[0] = '\0';

 	}

 #else

 	/// SDL FIXME

 #endif

 	systemScreenMessage(frameDisplayString, 1, -1);

 }

 

 // this function should only be called once every frame

 void VBAMovieUpdateState()

 {

 	++Movie.currentFrame;

 

 	if (Movie.state == MOVIE_STATE_PLAY)

 	{

 		Movie.inputBufferPtr += Movie.bytesPerFrame;

 		if (Movie.currentFrame >= Movie.header.length_frames)

 		{

 			// the movie ends anyway; what to do next depends on the settings

 			change_state(MOVIE_STATE_END);

 		}

 	}

 	else if (Movie.state == MOVIE_STATE_RECORD)

 	{

 		// use first fseek?

 		fwrite(Movie.inputBufferPtr, 1, Movie.bytesPerFrame, Movie.file);

 		Movie.header.length_frames = Movie.currentFrame;

 		Movie.inputBufferPtr	 += Movie.bytesPerFrame;

 		Movie.RecordedThisSession = true;

 		flush_movie_header();

 	}

 	else if (Movie.state == MOVIE_STATE_END)

 	{

 		change_state(MOVIE_STATE_END);

 	}

 }

 

 void VBAMovieRead(int i, bool /*sensor*/)

 {

 	if (Movie.state != MOVIE_STATE_PLAY)

 		return;

 

 	if (i < 0 || i >= MOVIE_NUM_OF_POSSIBLE_CONTROLLERS)

 		return;      // not a controller we're recognizing

 

 	if (Movie.header.controllerFlags & MOVIE_CONTROLLER(i))

 	{

 		currentButtons[i] = Read16(Movie.inputBufferPtr + CONTROLLER_DATA_SIZE * i);

 	}

 	else

 	{

 		currentButtons[i] = 0;        // pretend the controller is disconnected

 	}

 

 	if ((currentButtons[i] & BUTTON_MASK_NEW_RESET) != 0)

 		resetSignaled = true;

 }

 

 void VBAMovieWrite(int i, bool /*sensor*/)

 {

 	if (Movie.state != MOVIE_STATE_RECORD)

 		return;

 

 	if (i < 0 || i >= MOVIE_NUM_OF_POSSIBLE_CONTROLLERS)

 		return;      // not a controller we're recognizing

 

 	reserve_buffer_space((uint32)((Movie.inputBufferPtr - Movie.inputBuffer) + Movie.bytesPerFrame));

 

 	if (Movie.header.controllerFlags & MOVIE_CONTROLLER(i))

 	{

 		// get the current controller data

 		uint16 buttonData = currentButtons[i];

 

 		// mask away the irrelevent bits

 		buttonData &= BUTTON_REGULAR_MASK | BUTTON_MOTION_MASK;

 

 		// soft-reset "button" for 1 frame if the game is reset while recording

 		if (resetSignaled)

 		{

 			buttonData |= BUTTON_MASK_NEW_RESET;

 		}

 

 		// backward compatibility kludge

 		if (resetSignaledLast)

 		{

 			buttonData |= BUTTON_MASK_OLD_RESET;

 		}

 

 		Write16(buttonData, Movie.inputBufferPtr + CONTROLLER_DATA_SIZE * i);

 

 		// and for display

 		currentButtons[i] = buttonData;

 	}

 	else

 	{

 		// pretend the controller is disconnected (otherwise input it gives could cause desync since we're not writing it to the

 		// movie)

 		currentButtons[i] = 0;

 	}

 }

 

 void VBAMovieStop(bool8 suppress_message)

 {

 	if (Movie.state != MOVIE_STATE_NONE)

 	{

 		change_state(MOVIE_STATE_NONE);

 		if (!suppress_message)

 			systemScreenMessage("Movie stop");

 	}

 }

 

 int VBAMovieGetInfo(const char *filename, SMovie *info)

 {

 	assert(info != NULL);

 	if (info == NULL)

 		return -1;

 

 	FILE *	file;

 	int		result;

 	SMovie &local_movie = *info;

 

 	memset(info, 0, sizeof(*info));

 	if (filename[0] == '\0')

 		return MOVIE_FILE_NOT_FOUND;

 	if (!(file = fopen(filename, "rb")))

 		return MOVIE_FILE_NOT_FOUND;

 

 	// read header

 	if ((result = (read_movie_header(file, local_movie))) != MOVIE_SUCCESS)

 	{

 		fclose(file);

 		return result;

 	}

 

 	// read the metadata / author info from file

 	fread(local_movie.authorInfo, 1, sizeof(char) * MOVIE_METADATA_SIZE, file);

 

 	strncpy(local_movie.filename, filename, _MAX_PATH);

 	local_movie.filename[_MAX_PATH - 1] = '\0';

 

 	if (Movie.file != NULL && stricmp(local_movie.filename, Movie.filename) == 0) // alreadyOpen

 	{

 		local_movie.bytesPerFrame		 = Movie.bytesPerFrame;

 		local_movie.header.length_frames = Movie.header.length_frames;

 	}

 	else

 	{

 		// recalculate length of movie from the file size

 		local_movie.bytesPerFrame = bytes_per_frame(local_movie);

 		fseek(file, 0, SEEK_END);

 		int fileSize = ftell(file);

 		local_movie.header.length_frames =

 		    (fileSize - local_movie.header.offset_to_controller_data) / local_movie.bytesPerFrame;

 	}

 

 	fclose(file);

 

 	if (access(filename, W_OK))

 		info->readOnly = true;

 

 	return MOVIE_SUCCESS;

 }

 

 bool8 VBAMovieActive()

 {

 	return (Movie.state != MOVIE_STATE_NONE);

 }

 

 bool8 VBAMovieLoading()

 {

 	return loadingMovie;

 }

 

 bool8 VBAMoviePlaying()

 {

 	return (Movie.state == MOVIE_STATE_PLAY);

 }

 

 bool8 VBAMovieRecording()

 {

 	return (Movie.state == MOVIE_STATE_RECORD);

 }

 

 bool8 VBAMovieReadOnly()

 {

 	if (!VBAMovieActive())

 		return false;

 

 	return Movie.readOnly;

 }

 

 void VBAMovieToggleReadOnly()

 {

 	if (!VBAMovieActive())

 		return;

 

 	if (Movie.readOnly != 2)

 	{

 		Movie.readOnly = !Movie.readOnly;

 

 		systemScreenMessage(Movie.readOnly ? "Movie now read-only" : "Movie now editable");

 	}

 	else

 	{

 		systemScreenMessage("Can't toggle read-only movie");

 	}

 }

 

 uint32 VBAMovieGetVersion()

 {

 	if (!VBAMovieActive())

 		return 0;

 

 	return Movie.header.version;

 }

 

 uint32 VBAMovieGetMinorVersion()

 {

 	if (!VBAMovieActive())

 		return 0;

 

 	return Movie.header.minorVersion;

 }

 

 uint32 VBAMovieGetId()

 {

 	if (!VBAMovieActive())

 		return 0;

 

 	return Movie.header.uid;

 }

 

 uint32 VBAMovieGetLength()

 {

 	if (!VBAMovieActive())

 		return 0;

 

 	return Movie.header.length_frames;

 }

 

 uint32 VBAMovieGetFrameCounter()

 {

 	if (!VBAMovieActive())

 		return 0;

 

 	return Movie.currentFrame;

 }

 

 uint32 VBAMovieGetRerecordCount()

 {

 	if (!VBAMovieActive())

 		return 0;

 

 	return Movie.header.rerecord_count;

 }

 

 uint32 VBAMovieSetRerecordCount(uint32 newRerecordCount)

 {

 	uint32 oldRerecordCount = 0;

 	if (!VBAMovieActive())

 		return 0;

 

 	oldRerecordCount = Movie.header.rerecord_count;

 	Movie.header.rerecord_count = newRerecordCount;

 	return oldRerecordCount;

 }

 

 std::string VBAMovieGetAuthorInfo()

 {

 	if (!VBAMovieActive())

 		return "";

 

 	return Movie.authorInfo;

 }

 

 std::string VBAMovieGetFilename()

 {

 	if (!VBAMovieActive())

 		return "";

 

 	return Movie.filename;

 }

 

 void VBAMovieFreeze(uint8 * *buf, uint32 *size)

 {

 	// sanity check

 	if (!VBAMovieActive())

 	{

 		return;

 	}

 

 	*buf  = NULL;

 	*size = 0;

 

 	// compute size needed for the buffer

 	// room for header.uid, currentFrame, and header.length_frames

 	uint32 size_needed = sizeof(Movie.header.uid) + sizeof(Movie.currentFrame) + sizeof(Movie.header.length_frames);

 	size_needed += (uint32)(Movie.bytesPerFrame * Movie.header.length_frames);

 	*buf		 = new uint8[size_needed];

 	*size		 = size_needed;

 

 	uint8 *ptr = *buf;

 	if (!ptr)

 	{

 		return;

 	}

 

 	Push32(Movie.header.uid, ptr);

 	Push32(Movie.currentFrame, ptr);

 	Push32(Movie.header.length_frames - 1, ptr);   // HACK: shorten the length by 1 for backward compatibility

 

 	memcpy(ptr, Movie.inputBuffer, Movie.bytesPerFrame * Movie.header.length_frames);

 }

 

 int VBAMovieUnfreeze(const uint8 *buf, uint32 size)

 {

 	// sanity check

 	if (!VBAMovieActive())

 	{

 		return MOVIE_NOT_FROM_A_MOVIE;

 	}

 

 	const uint8 *ptr = buf;

 	if (size < sizeof(Movie.header.uid) + sizeof(Movie.currentFrame) + sizeof(Movie.header.length_frames))

 	{

 		return MOVIE_WRONG_FORMAT;

 	}

 

 	uint32 movie_id		 = Pop32(ptr);

 	uint32 current_frame = Pop32(ptr);

 	uint32 end_frame	 = Pop32(ptr) + 1;     // HACK: restore the length for backward compatibility

 	uint32 space_needed	 = Movie.bytesPerFrame * end_frame;

 

 	if (movie_id != Movie.header.uid)

 		return MOVIE_NOT_FROM_THIS_MOVIE;

 

 	if (space_needed > size)

 		return MOVIE_WRONG_FORMAT;

 

 	if (Movie.readOnly)

 	{

 		// here, we are going to keep the input data from the movie file

 		// and simply rewind to the currentFrame pointer

 		// this will cause a desync if the savestate is not in sync // <-- NOT ANYMORE

 		// with the on-disk recording data, but it's easily solved

 		// by loading another savestate or playing the movie from the beginning

 

 		// don't allow loading a state inconsistent with the current movie

 		uint32 length_history = min(current_frame, Movie.header.length_frames);

 		if (end_frame < length_history)

 			return MOVIE_SNAPSHOT_INCONSISTENT;

 

 		uint32 space_shared = Movie.bytesPerFrame * length_history;

 		if (memcmp(Movie.inputBuffer, ptr, space_shared))

 			return MOVIE_SNAPSHOT_INCONSISTENT;

 

 		Movie.currentFrame	 = current_frame;

 		Movie.inputBufferPtr = Movie.inputBuffer + Movie.bytesPerFrame * min(current_frame, Movie.header.length_frames);

 	}

 	else

 	{

 		// here, we are going to take the input data from the savestate

 		// and make it the input data for the current movie, then continue

 		// writing new input data at the currentFrame pointer

 		Movie.currentFrame		   = current_frame;

 		Movie.header.length_frames = end_frame;

 		if (!VBALuaRerecordCountSkip())

 			++Movie.header.rerecord_count;

 

 		Movie.RecordedThisSession = true;

 

 		// do this before calling reserve_buffer_space()

 		Movie.inputBufferPtr = Movie.inputBuffer + Movie.bytesPerFrame * min(current_frame, Movie.header.length_frames);

 		reserve_buffer_space(space_needed);

 		memcpy(Movie.inputBuffer, ptr, space_needed);

 

 		// for consistency, no auto movie conversion here since we don't auto convert the corresponding savestate

 		flush_movie_header();

 		flush_movie_frames();

 	}

 

 	change_state(MOVIE_STATE_PLAY);	// check for movie end

 

 	// necessary!

 	resetSignaled	  = false;

 	resetSignaledLast = false;

 

 	// necessary to check if there's a reset signal at the previous frame

 	if (current_frame > 0)

 	{

 		const u8 NEW_RESET = u8(BUTTON_MASK_NEW_RESET >> 8);

 		for (int i = 0; i < MOVIE_NUM_OF_POSSIBLE_CONTROLLERS; ++i)

 		{

 			if ((Movie.header.controllerFlags & MOVIE_CONTROLLER(i)) && (*(Movie.inputBufferPtr+1- Movie.bytesPerFrame) & NEW_RESET))

 			{

 				resetSignaledLast = true;

 				break;

 			}

 		}

 	}

 

 	return MOVIE_SUCCESS;

 }

 

 bool VBAMovieEnded()

 {

 	return (Movie.state == MOVIE_STATE_END);

 //	return (Movie.state != MOVIE_STATE_NONE && Movie.currentFrame >= Movie.header.length_frames);

 }

 

 bool VBAMovieAllowsRerecording()

 {

 	bool allows = (Movie.state != MOVIE_STATE_NONE) && (Movie.currentFrame <= Movie.header.length_frames);

 	return /*!VBAMovieReadOnly() &&*/ allows;

 }

 

 bool VBAMovieSwitchToPlaying()

 {

 	if (!VBAMovieActive())

 		return false;

 

 	if (!Movie.readOnly)

 	{

 		VBAMovieToggleReadOnly();

 	}

 

 	change_state(MOVIE_STATE_PLAY);

 	if (Movie.state == MOVIE_STATE_PLAY)

 		systemScreenMessage("Movie replay (continue)");

 	else

 		systemScreenMessage("Movie end");

 

 	return true;

 }

 

 bool VBAMovieSwitchToRecording()

 {

 	if (!VBAMovieAllowsRerecording())

 		return false;

 

 	if (Movie.readOnly)

 	{

 		VBAMovieToggleReadOnly();

 	}

 

 	if (!VBALuaRerecordCountSkip())

 		++Movie.header.rerecord_count;

 

 	change_state(MOVIE_STATE_RECORD);

 	systemScreenMessage("Movie re-record");

 

 	//truncate_movie(Movie.currentFrame);

 

 	return true;

 }

 

 uint32 VBAMovieGetState()

 {

 	// ?

 	if (!VBAMovieActive())

 		return MOVIE_STATE_NONE;

 

 	return Movie.state;

 }

 

 void VBAMovieSignalReset()

 {

 	if (VBAMovieActive())

 		resetSignaled = true;

 }

 

 void VBAMovieResetIfRequested()

 {

 	if (resetSignaled)

 	{

 		theEmulator.emuReset(false);

 		resetSignaled	  = false;

 		resetSignaledLast = true;

 	}

 	else

 	{

 		resetSignaledLast = false;

 	}

 }

 

 void VBAMovieSetMetadata(const char *info)

 {

 	if (!memcmp(Movie.authorInfo, info, MOVIE_METADATA_SIZE))

 		return;

 

 	memcpy(Movie.authorInfo, info, MOVIE_METADATA_SIZE); // strncpy would omit post-0 bytes

 	Movie.authorInfo[MOVIE_METADATA_SIZE - 1] = '\0';

 

 	if (Movie.file)

 	{

 		// (over-)write the header

 		fseek(Movie.file, 0, SEEK_SET);

 		write_movie_header(Movie.file, Movie);

 

 		// write the metadata / author info to file

 		fwrite(Movie.authorInfo, 1, sizeof(char) * MOVIE_METADATA_SIZE, Movie.file);

 

 		fflush(Movie.file);

 	}

 }

 

 void VBAMovieRestart()

 {

 	if (VBAMovieActive())

 	{

 		systemSoundClearBuffer();

 

 		bool8 modified = Movie.RecordedThisSession;

 

 		VBAMovieStop(true);

 

 		char movieName [_MAX_PATH];

 		strncpy(movieName, Movie.filename, _MAX_PATH);

 		movieName[_MAX_PATH - 1] = '\0';

 		VBAMovieOpen(movieName, Movie.readOnly); // can't just pass in Movie.filename, since VBAMovieOpen clears out Movie's

 		                                         // variables

 

 		Movie.RecordedThisSession = modified;

 

 		systemScreenMessage("Movie replay (restart)");

 	}

 }

 

 int VBAMovieGetPauseAt()

 {

 	return Movie.pauseFrame;

 }

 

 void VBAMovieSetPauseAt(int at)

 {

 	Movie.pauseFrame = at;

 }

 

 ///////////////////////

 // movie tools

 

 // FIXME: is it safe to convert/flush a movie while recording it (considering fseek() problem)?

 int VBAMovieConvertCurrent()

 {

 	if (!VBAMovieActive())

 	{

 		return MOVIE_NOTHING;

 	}

 

 	if (Movie.header.minorVersion > VBM_REVISION)

 	{

 		return MOVIE_WRONG_VERSION;

 	}

 

 	if (Movie.header.minorVersion == VBM_REVISION)

 	{

 		return MOVIE_NOTHING;

 	}

 

 	Movie.header.minorVersion = VBM_REVISION;

 

 	if (Movie.header.length_frames == 0) // this could happen

 	{

 		truncate_movie(0);

 		return MOVIE_SUCCESS;

 	}

 

 	// fix movies recorded from snapshots

 	if (Movie.header.startFlags & MOVIE_START_FROM_SNAPSHOT)

 	{

 		uint8 *firstFramePtr = Movie.inputBuffer;

 		for (int i = 0; i < MOVIE_NUM_OF_POSSIBLE_CONTROLLERS; ++i)

 		{

 			if (Movie.header.controllerFlags & MOVIE_CONTROLLER(i))

 			{

 				Push16(initialInputs[i], firstFramePtr);

 				// note: this is correct since Push16 advances the dest pointer by sizeof u16

 			}

 		}

 	}

 

 	// convert old resets to new ones

 	const u8 OLD_RESET = u8(BUTTON_MASK_OLD_RESET >> 8);

 	const u8 NEW_RESET = u8(BUTTON_MASK_NEW_RESET >> 8);

 	for (int i = 0; i < MOVIE_NUM_OF_POSSIBLE_CONTROLLERS; ++i)

 	{

 		if (Movie.header.controllerFlags & MOVIE_CONTROLLER(i))

 		{

 			uint8 *startPtr = Movie.inputBuffer + sizeof(u16) * i + 1;

 			uint8 *endPtr	= Movie.inputBuffer + Movie.bytesPerFrame * (Movie.header.length_frames - 1);

 			for (; startPtr < endPtr; startPtr += Movie.bytesPerFrame)

 			{

 				if (startPtr[Movie.bytesPerFrame] & OLD_RESET)

 				{

 					startPtr[0] |= NEW_RESET;

 				}

 			}

 		}

 	}

 

 	flush_movie_header();

 	flush_movie_frames();

 	return MOVIE_SUCCESS;

 }

 

 bool VBAMovieTuncateAtCurrentFrame()

 {

 	if (!VBAMovieActive())

 		return false;

 

 	truncate_movie(Movie.currentFrame);

 	change_state(MOVIE_STATE_END);

 	systemScreenMessage("Movie truncated");

 

 	return true;

 }

 

 bool VBAMovieFixHeader()

 {

 	if (!VBAMovieActive())

 		return false;

 

 	flush_movie_header();

 	systemScreenMessage("Movie header fixed");

 	return true;

 }