#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

   printf("RLM: movie init\n");

 

   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);

 	

   printf("RLM: Writing movie header\n");

   // write the header to file

   write_movie_header(file, Movie);

 

   printf("RLM: setting metadata\n");

 

   // copy over the metadata / author info

   VBAMovieSetMetadata("________________Robert  McIntyre______________________________________________________________________________________________________________________________________________________________________________________________________________________");

 	

   printf("RLM: writing metadata\n");

 

   // 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;

   printf("RLM: inside updateState\n");

   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)

     {

       printf("RLM: Movie_STATE_RECORD\n");

       // use first fseek?

       //TODO: THis is the problem.

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

       printf("RLM: write successful.\n");

       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);

     }

   printf("RLM: setMetadata called\n");

 

 }

 

 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;

 }