1
0
mirror of https://github.com/vcmi/vcmi.git synced 2024-12-26 22:57:00 +02:00
vcmi/client/CVideoHandler.cpp
2014-05-21 13:02:20 +04:00

988 lines
21 KiB
C++

#include "StdInc.h"
#include <SDL.h>
#include "CVideoHandler.h"
#include "gui/CGuiHandler.h"
#include "gui/SDL_Extensions.h"
#include "CPlayerInterface.h"
#include "../lib/filesystem/Filesystem.h"
extern CGuiHandler GH; //global gui handler
//reads events and returns true on key down
static bool keyDown()
{
SDL_Event ev;
while(SDL_PollEvent(&ev))
{
if(ev.type == SDL_KEYDOWN || ev.type == SDL_MOUSEBUTTONDOWN)
return true;
}
return false;
}
#if defined(_WIN32) && (_MSC_VER < 1800 || !defined(USE_FFMPEG))
void checkForError(bool throwing = true)
{
int error = GetLastError();
if(!error)
return;
logGlobal->errorStream() << "Error " << error << " encountered!";
std::string msg;
char* pTemp = nullptr;
FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
nullptr, error, MAKELANGID( LANG_NEUTRAL, SUBLANG_DEFAULT ), (LPSTR)&pTemp, 1, nullptr );
logGlobal->errorStream() << "Error: " << pTemp;
msg = pTemp;
LocalFree( pTemp );
pTemp = nullptr;
if(throwing)
throw std::runtime_error(msg);
}
void blitBuffer(char *buffer, int x, int y, int w, int h, SDL_Surface *dst)
{
const int bpp = dst->format->BytesPerPixel;
char *dest;
for(int i = h; i > 0; i--)
{
dest = (char*)dst->pixels + dst->pitch*(y+h-i) + x*dst->format->BytesPerPixel;
memcpy(dest, buffer, bpp*w);
buffer += bpp*w;
}
}
void DLLHandler::Instantiate(const char *filename)
{
name = filename;
dll = LoadLibraryA(filename);
if(!dll)
{
logGlobal->errorStream() << "Failed loading " << filename;
checkForError(true);
}
}
void *DLLHandler::FindAddress(const char *symbol)
{
void *ret;
if(!dll)
{
logGlobal->errorStream() << "Cannot look for " << symbol << " because DLL hasn't been appropriately loaded!";
return nullptr;
}
ret = (void*) GetProcAddress(dll,symbol);
if(!ret)
{
logGlobal->errorStream() << "Failed to find " << symbol << " in " << name;
checkForError();
}
return ret;
}
DLLHandler::~DLLHandler()
{
if(dll)
{
if(!FreeLibrary(dll))
{
logGlobal->errorStream() << "Failed to free " << name;
checkForError();
}
}
}
DLLHandler::DLLHandler()
{
dll = nullptr;
}
CBIKHandler::CBIKHandler()
{
Instantiate("BINKW32.DLL");
//binkGetError = FindAddress("_BinkGetError@0");
binkOpen = (BinkOpen)FindAddress("_BinkOpen@8");
binkSetSoundSystem = (BinkSetSoundSystem)FindAddress("_BinkSetSoundSystem@8");
//getPalette = (BinkGetPalette)FindAddress("_BinkGetPalette@4");
binkNextFrame = (BinkNextFrame)FindAddress("_BinkNextFrame@4");
binkDoFrame = (BinkDoFrame)FindAddress("_BinkDoFrame@4");
binkCopyToBuffer = (BinkCopyToBuffer)FindAddress("_BinkCopyToBuffer@28");
binkWait = (BinkWait)FindAddress("_BinkWait@4");
binkClose = (BinkClose)FindAddress("_BinkClose@4");
hBinkFile = nullptr;
hBink = nullptr;
buffer = nullptr;
bufferSize = 0;
}
bool CBIKHandler::open(std::string name)
{
hBinkFile = CreateFileA
(
name.c_str(), // file name
GENERIC_READ, // access mode
FILE_SHARE_READ, // share mode
nullptr, // Security Descriptor
OPEN_EXISTING, // how to create
FILE_ATTRIBUTE_NORMAL,//FILE_FLAG_SEQUENTIAL_SCAN, // file attributes
0 // handle to template file
);
if(hBinkFile == INVALID_HANDLE_VALUE)
{
logGlobal->errorStream() << "BIK handler: failed to open " << name;
goto checkErrorAndClean;
}
//GCC wants scope of waveout to don`t cross labels/swith/goto
{
void *waveout = GetProcAddress(dll,"_BinkOpenWaveOut@4");
if(waveout)
binkSetSoundSystem(waveout,nullptr);
}
hBink = binkOpen(hBinkFile, 0x8a800000);
if(!hBink)
{
logGlobal->errorStream() << "bink failed to open " << name;
goto checkErrorAndClean;
}
allocBuffer();
return true;
checkErrorAndClean:
CloseHandle(hBinkFile);
hBinkFile = nullptr;
checkForError();
throw std::runtime_error("BIK failed opening video!");
}
void CBIKHandler::show( int x, int y, SDL_Surface *dst, bool update )
{
const int w = hBink->width,
h = hBink->height,
Bpp = dst->format->BytesPerPixel;
int mode = -1;
//screen color depth might have changed... (eg. because F4)
if(bufferSize != w * h * Bpp)
{
freeBuffer();
allocBuffer(Bpp);
}
switch(Bpp)
{
case 2:
mode = 3; //565, mode 2 is 555 probably
break;
case 3:
mode = 0;
break;
case 4:
mode = 1;
break;
default:
return; //not supported screen depth
}
binkDoFrame(hBink);
binkCopyToBuffer(hBink, buffer, w*Bpp, h, 0, 0, mode);
blitBuffer(buffer, x, y, w, h, dst);
if(update)
SDL_UpdateRect(dst, x, y, w, h);
}
bool CBIKHandler::nextFrame()
{
binkNextFrame(hBink);
return true;
}
void CBIKHandler::close()
{
binkClose(hBink);
hBink = nullptr;
CloseHandle(hBinkFile);
hBinkFile = nullptr;
delete [] buffer;
buffer = nullptr;
bufferSize = 0;
}
bool CBIKHandler::wait()
{
return binkWait(hBink);
}
int CBIKHandler::curFrame() const
{
return hBink->currentFrame;
}
int CBIKHandler::frameCount() const
{
return hBink->frameCount;
}
void CBIKHandler::redraw( int x, int y, SDL_Surface *dst, bool update )
{
int w = hBink->width, h = hBink->height;
blitBuffer(buffer, x, y, w, h, dst);
if(update)
SDL_UpdateRect(dst, x, y, w, h);
}
void CBIKHandler::allocBuffer(int Bpp)
{
if(!Bpp) Bpp = screen->format->BytesPerPixel;
bufferSize = hBink->width * hBink->height * Bpp;
buffer = new char[bufferSize];
}
void CBIKHandler::freeBuffer()
{
delete [] buffer;
buffer = nullptr;
bufferSize = 0;
}
bool CSmackPlayer::nextFrame()
{
ptrSmackNextFrame(data);
return true;
}
bool CSmackPlayer::wait()
{
return ptrSmackWait(data);
}
CSmackPlayer::CSmackPlayer() : data(nullptr)
{
Instantiate("smackw32.dll");
ptrSmackNextFrame = (SmackNextFrame)FindAddress("_SmackNextFrame@4");
ptrSmackWait = (SmackWait)FindAddress("_SmackWait@4");
ptrSmackDoFrame = (SmackDoFrame)FindAddress("_SmackDoFrame@4");
ptrSmackToBuffer = (SmackToBuffer)FindAddress("_SmackToBuffer@28");
ptrSmackOpen = (SmackOpen)FindAddress("_SmackOpen@12");
ptrSmackSoundOnOff = (SmackSoundOnOff)FindAddress("_SmackSoundOnOff@8");
ptrSmackClose = (SmackClose)FindAddress("_SmackClose@4");
ptrVolumePan = (SmackVolumePan)FindAddress("_SmackVolumePan@16");
}
CSmackPlayer::~CSmackPlayer()
{
if(data)
close();
}
void CSmackPlayer::close()
{
ptrSmackClose(data);
data = nullptr;
}
bool CSmackPlayer::open( std::string name )
{
Uint32 flags[2] = {0xff400, 0xfe400};
data = ptrSmackOpen( (void*)name.c_str(), flags[1], -1);
if (!data)
{
logGlobal->errorStream() << "Smack cannot open " << name;
checkForError();
throw std::runtime_error("SMACK failed opening video");
}
buffer = new char[data->width*data->height*2];
buf = buffer+data->width*(data->height-1)*2; // adjust pointer position for later use by 'SmackToBuffer'
//ptrVolumePan(data, 0xfe000, 3640 * GDefaultOptions.musicVolume / 11, 0x8000); //set volume
return true;
}
void CSmackPlayer::show( int x, int y, SDL_Surface *dst, bool update)
{
int w = data->width;
int stripe = (-w*2) & (~3);
//put frame to the buffer
ptrSmackToBuffer(data, 0, 0, stripe, w, buf, 0x80000000);
ptrSmackDoFrame(data);
redraw(x, y, dst, update);
}
int CSmackPlayer::curFrame() const
{
return data->currentFrame;
}
int CSmackPlayer::frameCount() const
{
return data->frameCount;
}
void CSmackPlayer::redraw( int x, int y, SDL_Surface *dst, bool update )
{
int w = std::min<int>(data->width, dst->w - x), h = std::min<int>(data->height, dst->h - y);
/* Lock the screen for direct access to the pixels */
if ( SDL_MUSTLOCK(dst) )
{
if ( SDL_LockSurface(dst) < 0 )
{
fprintf(stderr, "Can't lock screen: %s\n", SDL_GetError());
return;
}
}
// draw the frame
Uint16* addr = (Uint16*) (buffer+w*(h-1)*2-2);
if(dst->format->BytesPerPixel >= 3)
{
for( int j=0; j<h-1; j++) // why -1 ?
{
for ( int i=w-1; i>=0; i--)
{
Uint16 pixel = *addr;
Uint8 *p = (Uint8 *)dst->pixels + (j+y) * dst->pitch + (i + x) * dst->format->BytesPerPixel;
p[2] = ((pixel & 0x7c00) >> 10) * 8;
p[1] = ((pixel & 0x3e0) >> 5) * 8;
p[0] = ((pixel & 0x1F)) * 8;
addr--;
}
}
}
else if(dst->format->BytesPerPixel == 2)
{
for( int j=0; j<h-1; j++) // why -1 ?
{
for ( int i=w-1; i>=0; i--)
{
//convert rgb 555 to 565
Uint16 pixel = *addr;
Uint16 *p = (Uint16 *)((Uint8 *)dst->pixels + (j+y) * dst->pitch + (i + x) * dst->format->BytesPerPixel);
*p = (pixel & 0x1F)
+ ((pixel & 0x3e0) << 1)
+ ((pixel & 0x7c00) << 1);
addr--;
}
}
}
if ( SDL_MUSTLOCK(dst) )
{
SDL_UnlockSurface(dst);
}
if(update)
SDL_UpdateRect(dst, x, y, w, h);
}
CVideoPlayer::CVideoPlayer()
{
current = nullptr;
}
CVideoPlayer::~CVideoPlayer()
{
}
bool CVideoPlayer::open(std::string name)
{
fname = name;
first = true;
try
{
// Extract video from video.vid so we can play it.
// We can handle only videos in form of single file, no archive support yet.
{
ResourceID videoID = ResourceID("VIDEO/" + name, EResType::VIDEO);
auto data = CResourceHandler::get()->load(videoID)->readAll();
// try to determine video format using magic number from header (3 bytes, SMK or BIK)
std::string magic(reinterpret_cast<char*>(data.first.get()), 3);
if (magic == "BIK")
current = &bikPlayer;
else if (magic == "SMK")
current = &smkPlayer;
else
throw std::runtime_error("Unknown video format: " + magic);
std::ofstream out(name, std::ofstream::binary);
out.exceptions(std::ifstream::failbit | std::ifstream::badbit);
out.write(reinterpret_cast<char*>(data.first.get()), data.second);
}
current->open(name);
return true;
}
catch(std::exception &e)
{
current = nullptr;
logGlobal->warnStream() << "Failed to open video file " << name << ": " << e.what();
}
return false;
}
void CVideoPlayer::close()
{
if(!current)
{
logGlobal->warnStream() << "Closing no opened player...?";
return;
}
current->close();
current = nullptr;
if(!DeleteFileA(fname.c_str()))
{
logGlobal->errorStream() << "Cannot remove temporarily extracted video file: " << fname;
checkForError(false);
}
fname.clear();
}
bool CVideoPlayer::nextFrame()
{
if(current)
{
current->nextFrame();
return true;
}
else
return false;
}
void CVideoPlayer::show(int x, int y, SDL_Surface *dst, bool update)
{
if(current)
current->show(x, y, dst, update);
}
bool CVideoPlayer::wait()
{
if(current)
return current->wait();
else
return false;
}
int CVideoPlayer::curFrame() const
{
if(current)
return current->curFrame();
else
return -1;
}
int CVideoPlayer::frameCount() const
{
if(current)
return current->frameCount();
else
return -1;
}
bool CVideoPlayer::openAndPlayVideo(std::string name, int x, int y, SDL_Surface *dst, bool stopOnKey)
{
if(!open(name))
return false;
bool ret = playVideo(x, y, dst, stopOnKey);
close();
return ret;
}
void CVideoPlayer::update( int x, int y, SDL_Surface *dst, bool forceRedraw, bool update )
{
if(!current)
return;
bool w = false;
if(!first)
{
w = wait(); //check if should keep current frame
if(!w)
nextFrame();
}
else
{
first = false;
}
if(!w)
{
show(x,y,dst,update);
}
else if (forceRedraw)
{
redraw(x, y, dst, update);
}
}
void CVideoPlayer::redraw( int x, int y, SDL_Surface *dst, bool update )
{
if(current)
current->redraw(x, y, dst, update);
}
bool CVideoPlayer::playVideo(int x, int y, SDL_Surface *dst, bool stopOnKey)
{
if(!current)
return false;
int frame = 0;
while(frame < frameCount()) //play all frames
{
if(stopOnKey && keyDown())
return false;
if(!wait())
{
show(x, y, dst);
nextFrame();
frame++;
}
SDL_Delay(20);
}
return true;
}
#else
#ifdef _MSC_VER
#pragma comment(lib, "avcodec.lib")
#pragma comment(lib, "avutil.lib")
#pragma comment(lib, "avformat.lib")
#pragma comment(lib, "swscale.lib")
#endif // _MSC_VER
#ifndef DISABLE_VIDEO
// Define a set of functions to read data
static int lodRead(void* opaque, uint8_t* buf, int size)
{
auto video = reinterpret_cast<CVideoPlayer *>(opaque);
return video->data->read(buf, size);
}
static si64 lodSeek(void * opaque, si64 pos, int whence)
{
auto video = reinterpret_cast<CVideoPlayer *>(opaque);
if (whence & AVSEEK_SIZE)
return video->data->getSize();
return video->data->seek(pos);
}
CVideoPlayer::CVideoPlayer()
{
format = nullptr;
frame = nullptr;
codec = nullptr;
sws = nullptr;
overlay = nullptr;
dest = nullptr;
context = nullptr;
// Register codecs. TODO: May be overkill. Should call a
// combination of av_register_input_format() /
// av_register_output_format() / av_register_protocol() instead.
av_register_all();
}
bool CVideoPlayer::open(std::string fname)
{
return open(fname, true, false);
}
// loop = to loop through the video
// useOverlay = directly write to the screen.
bool CVideoPlayer::open(std::string fname, bool loop, bool useOverlay)
{
close();
this->fname = fname;
refreshWait = 3;
refreshCount = -1;
doLoop = loop;
ResourceID resource(std::string("Video/") + fname, EResType::VIDEO);
if (!CResourceHandler::get()->existsResource(resource))
{
logGlobal->errorStream() << "Error: video " << resource.getName() << " was not found";
return false;
}
data = CResourceHandler::get()->load(resource);
static const int BUFFER_SIZE = 4096;
unsigned char * buffer = (unsigned char *)av_malloc(BUFFER_SIZE);// will be freed by ffmpeg
context = avio_alloc_context( buffer, BUFFER_SIZE, 0, (void *)this, lodRead, nullptr, lodSeek);
format = avformat_alloc_context();
format->pb = context;
// filename is not needed - file was already open and stored in this->data;
int avfopen = avformat_open_input(&format, "dummyFilename", nullptr, nullptr);
if (avfopen != 0)
{
return false;
}
// Retrieve stream information
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(53, 17, 0)
if (av_find_stream_info(format) < 0)
#else
if (avformat_find_stream_info(format, nullptr) < 0)
#endif
return false;
// Find the first video stream
stream = -1;
for(ui32 i=0; i<format->nb_streams; i++)
{
if (format->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO)
{
stream = i;
break;
}
}
if (stream < 0)
// No video stream in that file
return false;
// Get a pointer to the codec context for the video stream
codecContext = format->streams[stream]->codec;
// Find the decoder for the video stream
codec = avcodec_find_decoder(codecContext->codec_id);
if (codec == nullptr)
{
// Unsupported codec
return false;
}
// Open codec
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(53, 6, 0)
if ( avcodec_open(codecContext, codec) < 0 )
#else
if ( avcodec_open2(codecContext, codec, nullptr) < 0 )
#endif
{
// Could not open codec
codec = nullptr;
return false;
}
// Allocate video frame
frame = avcodec_alloc_frame();
// Allocate a place to put our YUV image on that screen
if (useOverlay)
{
overlay = SDL_CreateYUVOverlay(codecContext->width, codecContext->height,
SDL_YV12_OVERLAY, screen);
}
else
{
dest = CSDL_Ext::newSurface(codecContext->width, codecContext->height);
destRect.x = destRect.y = 0;
destRect.w = codecContext->width;
destRect.h = codecContext->height;
}
if (overlay == nullptr && dest == nullptr)
return false;
// Convert the image into YUV format that SDL uses
if (overlay)
{
sws = sws_getContext(codecContext->width, codecContext->height,
codecContext->pix_fmt, codecContext->width, codecContext->height,
PIX_FMT_YUV420P, SWS_BICUBIC, nullptr, nullptr, nullptr);
}
else
{
PixelFormat screenFormat = PIX_FMT_NONE;
if (screen->format->Bshift > screen->format->Rshift)
{
// this a BGR surface
switch (screen->format->BytesPerPixel)
{
case 2: screenFormat = PIX_FMT_BGR565; break;
case 3: screenFormat = PIX_FMT_BGR24; break;
case 4: screenFormat = PIX_FMT_BGR32; break;
default: return false;
}
}
else
{
// this a RGB surface
switch (screen->format->BytesPerPixel)
{
case 2: screenFormat = PIX_FMT_RGB565; break;
case 3: screenFormat = PIX_FMT_RGB24; break;
case 4: screenFormat = PIX_FMT_RGB32; break;
default: return false;
}
}
sws = sws_getContext(codecContext->width, codecContext->height,
codecContext->pix_fmt, codecContext->width, codecContext->height,
screenFormat, SWS_BICUBIC, nullptr, nullptr, nullptr);
}
if (sws == nullptr)
return false;
pos.w = codecContext->width;
pos.h = codecContext->height;
return true;
}
// Read the next frame. Return false on error/end of file.
bool CVideoPlayer::nextFrame()
{
AVPacket packet;
int frameFinished = 0;
bool gotError = false;
if (sws == nullptr)
return false;
while(!frameFinished)
{
int ret = av_read_frame(format, &packet);
if (ret < 0)
{
// Error. It's probably an end of file.
if (doLoop && !gotError)
{
// Rewind
if (av_seek_frame(format, stream, 0, 0) < 0)
break;
gotError = true;
}
else
{
break;
}
}
else
{
// Is this a packet from the video stream?
if (packet.stream_index == stream)
{
// Decode video frame
avcodec_decode_video2(codecContext, frame, &frameFinished, &packet);
// Did we get a video frame?
if (frameFinished)
{
AVPicture pict;
if (overlay) {
SDL_LockYUVOverlay(overlay);
pict.data[0] = overlay->pixels[0];
pict.data[1] = overlay->pixels[2];
pict.data[2] = overlay->pixels[1];
pict.linesize[0] = overlay->pitches[0];
pict.linesize[1] = overlay->pitches[2];
pict.linesize[2] = overlay->pitches[1];
sws_scale(sws, frame->data, frame->linesize,
0, codecContext->height, pict.data, pict.linesize);
SDL_UnlockYUVOverlay(overlay);
}
else
{
pict.data[0] = (ui8 *)dest->pixels;
pict.linesize[0] = dest->pitch;
sws_scale(sws, frame->data, frame->linesize,
0, codecContext->height, pict.data, pict.linesize);
}
}
}
av_free_packet(&packet);
}
}
return frameFinished != 0;
}
void CVideoPlayer::show( int x, int y, SDL_Surface *dst, bool update )
{
if (sws == nullptr)
return;
pos.x = x;
pos.y = y;
CSDL_Ext::blitSurface(dest, &destRect, dst, &pos);
if (update)
SDL_UpdateRect(dst, pos.x, pos.y, pos.w, pos.h);
}
void CVideoPlayer::redraw( int x, int y, SDL_Surface *dst, bool update )
{
show(x, y, dst, update);
}
void CVideoPlayer::update( int x, int y, SDL_Surface *dst, bool forceRedraw, bool update )
{
if (sws == nullptr)
return;
if (refreshCount <= 0)
{
refreshCount = refreshWait;
if (nextFrame())
show(x,y,dst,update);
else
{
open(fname);
nextFrame();
// The y position is wrong at the first frame.
// Note: either the windows player or the linux player is
// broken. Compensate here until the bug is found.
show(x, y--, dst, update);
}
}
else
{
redraw(x, y, dst, update);
}
refreshCount --;
}
void CVideoPlayer::close()
{
fname = "";
if (sws)
{
sws_freeContext(sws);
sws = nullptr;
}
if (overlay)
{
SDL_FreeYUVOverlay(overlay);
overlay = nullptr;
}
if (dest)
{
SDL_FreeSurface(dest);
dest = nullptr;
}
if (frame)
{
av_free(frame);
frame = nullptr;
}
if (codec)
{
avcodec_close(codecContext);
codec = nullptr;
codecContext = nullptr;
}
if (format)
{
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(53, 17, 0)
av_close_input_file(format);
format = nullptr;
#else
avformat_close_input(&format);
#endif
}
if (context)
{
av_free(context);
context = nullptr;
}
}
// Plays a video. Only works for overlays.
bool CVideoPlayer::playVideo(int x, int y, SDL_Surface *dst, bool stopOnKey)
{
// Note: either the windows player or the linux player is
// broken. Compensate here until the bug is found.
y--;
pos.x = x;
pos.y = y;
while(nextFrame())
{
if(stopOnKey && keyDown())
return false;
SDL_DisplayYUVOverlay(overlay, &pos);
// Wait 3 frames
GH.mainFPSmng->framerateDelay();
GH.mainFPSmng->framerateDelay();
GH.mainFPSmng->framerateDelay();
}
return true;
}
bool CVideoPlayer::openAndPlayVideo(std::string name, int x, int y, SDL_Surface *dst, bool stopOnKey)
{
open(name, false, true);
bool ret = playVideo(x, y, dst, stopOnKey);
close();
return ret;
}
CVideoPlayer::~CVideoPlayer()
{
close();
}
#endif
#endif