SDL_bframebuffer.cc
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_DRIVER_HAIKU
#include "SDL_bframebuffer.h"
#include <AppKit.h>
#include <InterfaceKit.h>
#include "SDL_bmodes.h"
#include "SDL_BWin.h"
#include "../../main/haiku/SDL_BApp.h"
#ifdef __cplusplus
extern "C" {
#endif
int32 BE_UpdateOnce(SDL_Window *window);
static SDL_INLINE SDL_BWin *_ToBeWin(SDL_Window *window) {
return ((SDL_BWin*)(window->driverdata));
}
static SDL_INLINE SDL_BApp *_GetBeApp() {
return ((SDL_BApp*)be_app);
}
int BE_CreateWindowFramebuffer(_THIS, SDL_Window * window,
Uint32 * format,
void ** pixels, int *pitch) {
SDL_BWin *bwin = _ToBeWin(window);
BScreen bscreen;
if(!bscreen.IsValid()) {
return -1;
}
while(!bwin->Connected()) { snooze(100); }
/* Make sure we have exclusive access to frame buffer data */
bwin->LockBuffer();
/* format */
display_mode bmode;
bscreen.GetMode(&bmode);
int32 bpp = BE_ColorSpaceToBitsPerPixel(bmode.space);
*format = BE_BPPToSDLPxFormat(bpp);
/* Create the new bitmap object */
BBitmap *bitmap = bwin->GetBitmap();
if(bitmap) {
delete bitmap;
}
bitmap = new BBitmap(bwin->Bounds(), (color_space)bmode.space,
false, /* Views not accepted */
true); /* Contiguous memory required */
if(bitmap->InitCheck() != B_OK) {
return SDL_SetError("Could not initialize back buffer!\n");
}
bwin->SetBitmap(bitmap);
/* Set the pixel pointer */
*pixels = bitmap->Bits();
/* pitch = width of window, in bytes */
*pitch = bitmap->BytesPerRow();
bwin->SetBufferExists(true);
bwin->SetTrashBuffer(false);
bwin->UnlockBuffer();
return 0;
}
int BE_UpdateWindowFramebuffer(_THIS, SDL_Window * window,
const SDL_Rect * rects, int numrects) {
if(!window)
return 0;
SDL_BWin *bwin = _ToBeWin(window);
#ifdef DRAWTHREAD
bwin->LockBuffer();
bwin->SetBufferDirty(true);
bwin->UnlockBuffer();
#else
bwin->SetBufferDirty(true);
BE_UpdateOnce(window);
#endif
return 0;
}
int32 BE_DrawThread(void *data) {
SDL_BWin *bwin = (SDL_BWin*)data;
BScreen bscreen;
if(!bscreen.IsValid()) {
return -1;
}
while(bwin->ConnectionEnabled()) {
if( bwin->Connected() && bwin->BufferExists() && bwin->BufferIsDirty() ) {
bwin->LockBuffer();
BBitmap *bitmap = NULL;
bitmap = bwin->GetBitmap();
int32 windowPitch = bitmap->BytesPerRow();
int32 bufferPitch = bwin->GetRowBytes();
uint8 *windowpx;
uint8 *bufferpx;
int32 BPP = bwin->GetBytesPerPx();
int32 windowSub = bwin->GetFbX() * BPP +
bwin->GetFbY() * windowPitch;
clipping_rect *clips = bwin->GetClips();
int32 numClips = bwin->GetNumClips();
int i, y;
/* Blit each clipping rectangle */
bscreen.WaitForRetrace();
for(i = 0; i < numClips; ++i) {
clipping_rect rc = clips[i];
/* Get addresses of the start of each clipping rectangle */
int32 width = clips[i].right - clips[i].left + 1;
int32 height = clips[i].bottom - clips[i].top + 1;
bufferpx = bwin->GetBufferPx() +
clips[i].top * bufferPitch + clips[i].left * BPP;
windowpx = (uint8*)bitmap->Bits() +
clips[i].top * windowPitch + clips[i].left * BPP -
windowSub;
/* Copy each row of pixels from the window buffer into the frame
buffer */
for(y = 0; y < height; ++y)
{
if(bwin->CanTrashWindowBuffer()) {
goto escape; /* Break out before the buffer is killed */
}
memcpy(bufferpx, windowpx, width * BPP);
bufferpx += bufferPitch;
windowpx += windowPitch;
}
}
bwin->SetBufferDirty(false);
escape:
bwin->UnlockBuffer();
} else {
snooze(16000);
}
}
return B_OK;
}
void BE_DestroyWindowFramebuffer(_THIS, SDL_Window * window) {
SDL_BWin *bwin = _ToBeWin(window);
bwin->LockBuffer();
/* Free and clear the window buffer */
BBitmap *bitmap = bwin->GetBitmap();
delete bitmap;
bwin->SetBitmap(NULL);
bwin->SetBufferExists(false);
bwin->UnlockBuffer();
}
/*
* TODO:
* This was written to test if certain errors were caused by threading issues.
* The specific issues have since become rare enough that they may have been
* solved, but I doubt it- they were pretty sporadic before now.
*/
int32 BE_UpdateOnce(SDL_Window *window) {
SDL_BWin *bwin = _ToBeWin(window);
BScreen bscreen;
if(!bscreen.IsValid()) {
return -1;
}
if(bwin->ConnectionEnabled() && bwin->Connected()) {
bwin->LockBuffer();
int32 windowPitch = window->surface->pitch;
int32 bufferPitch = bwin->GetRowBytes();
uint8 *windowpx;
uint8 *bufferpx;
int32 BPP = bwin->GetBytesPerPx();
uint8 *windowBaseAddress = (uint8*)window->surface->pixels;
int32 windowSub = bwin->GetFbX() * BPP +
bwin->GetFbY() * windowPitch;
clipping_rect *clips = bwin->GetClips();
int32 numClips = bwin->GetNumClips();
int i, y;
/* Blit each clipping rectangle */
bscreen.WaitForRetrace();
for(i = 0; i < numClips; ++i) {
clipping_rect rc = clips[i];
/* Get addresses of the start of each clipping rectangle */
int32 width = clips[i].right - clips[i].left + 1;
int32 height = clips[i].bottom - clips[i].top + 1;
bufferpx = bwin->GetBufferPx() +
clips[i].top * bufferPitch + clips[i].left * BPP;
windowpx = windowBaseAddress +
clips[i].top * windowPitch + clips[i].left * BPP - windowSub;
/* Copy each row of pixels from the window buffer into the frame
buffer */
for(y = 0; y < height; ++y)
{
memcpy(bufferpx, windowpx, width * BPP);
bufferpx += bufferPitch;
windowpx += windowPitch;
}
}
bwin->UnlockBuffer();
}
return 0;
}
#ifdef __cplusplus
}
#endif
#endif /* SDL_VIDEO_DRIVER_HAIKU */
SDL_BWin::GetFbY
int32 GetFbY()
Definition: SDL_BWin.h:414
SDL_BWin::BufferExists
bool BufferExists()
Definition: SDL_BWin.h:422
bitmap
GLsizei GLfixed GLfixed GLfixed GLfixed const GLubyte * bitmap
Definition: SDL_opengl_glext.h:4534
format
GLint GLint GLsizei GLsizei GLsizei GLint GLenum format
Definition: SDL_opengl.h:1565
SDL_BWin::UnlockBuffer
void UnlockBuffer()
Definition: SDL_BWin.h:433
width
GLint GLint GLsizei width
Definition: SDL_opengl.h:1565
Uint32
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:155
SDL_BWin::GetRowBytes
uint32 GetRowBytes()
Definition: SDL_BWin.h:412
BE_ColorSpaceToBitsPerPixel
int32 BE_ColorSpaceToBitsPerPixel(uint32 colorspace)
window
SDL_Window * window
Definition: testautomation_render.c:26
data
GLint GLenum GLsizei GLsizei GLsizei GLint GLsizei const GLvoid * data
Definition: SDL_opengl.h:1967
SDL_bmodes.h
pixels
GLint GLint GLsizei GLsizei GLsizei GLint GLenum GLenum const GLvoid * pixels
Definition: SDL_opengl.h:1565
SDL_BWin::BufferIsDirty
bool BufferIsDirty()
Definition: SDL_BWin.h:423
SDL_BWin::GetClips
clipping_rect * GetClips()
Definition: SDL_BWin.h:417
height
GLint GLint GLsizei GLsizei height
Definition: SDL_opengl.h:1565
SDL_BWin::SetBitmap
void SetBitmap(BBitmap *bitmap)
Definition: SDL_BWin.h:436
SDL_BWin::SetBufferExists
void SetBufferExists(bool bufferExists)
Definition: SDL_BWin.h:431
SDL_bframebuffer.h
BPP
#define BPP
Definition: testgesture.c:27
SDL_BApp
Definition: SDL_BApp.h:80
SDL_BWin::GetNumClips
int32 GetNumClips()
Definition: SDL_BWin.h:418
y
GLint GLint GLint GLint GLint GLint y
Definition: SDL_opengl.h:1567
SDL_Surface::pixels
void * pixels
Definition: SDL_surface.h:75
_THIS
#define _THIS
Definition: SDL_alsa_audio.h:31
SDL_BWin::LockBuffer
void LockBuffer()
Definition: SDL_BWin.h:432
BE_BPPToSDLPxFormat
int32 BE_BPPToSDLPxFormat(int32 bpp)
SDL_BWin::GetBitmap
BBitmap * GetBitmap()
Definition: SDL_BWin.h:424
SDL_BWin::SetBufferDirty
void SetBufferDirty(bool bufferDirty)
Definition: SDL_BWin.h:434
SDL_BWin::Connected
bool Connected()
Definition: SDL_BWin.h:416
BE_UpdateWindowFramebuffer
int BE_UpdateWindowFramebuffer(_THIS, SDL_Window *window, const SDL_Rect *rects, int numrects)
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:42
NULL
#define NULL
Definition: begin_code.h:143
SDL_BWin::GetFbX
int32 GetFbX()
Definition: SDL_BWin.h:413
BE_CreateWindowFramebuffer
int BE_CreateWindowFramebuffer(_THIS, SDL_Window *window, Uint32 *format, void **pixels, int *pitch)
SDL_SetError
#define SDL_SetError
Definition: SDL_dynapi_overrides.h:36
SDL_BWin
Definition: SDL_BWin.h:63
BE_DestroyWindowFramebuffer
void BE_DestroyWindowFramebuffer(_THIS, SDL_Window *window)
memcpy
#define memcpy
Definition: SDL_malloc.c:640
SDL_Window
The type used to identify a window.
Definition: SDL_sysvideo.h:71
rects
SDL_Rect rects[MAX_RECTS]
Definition: testintersections.c:129
SDL_Surface::pitch
int pitch
Definition: SDL_surface.h:74
SDL_BWin::CanTrashWindowBuffer
bool CanTrashWindowBuffer()
Definition: SDL_BWin.h:421
SDL_INLINE
#define SDL_INLINE
Definition: begin_code.h:120
SDL_BWin::GetBufferPx
uint8 * GetBufferPx()
Definition: SDL_BWin.h:419
SDL_BWin::SetTrashBuffer
void SetTrashBuffer(bool trash)
Definition: SDL_BWin.h:435
SDL_Window::driverdata
void * driverdata
Definition: SDL_sysvideo.h:106
SDL_BWin::ConnectionEnabled
bool ConnectionEnabled()
Definition: SDL_BWin.h:415
SDL_Window::surface
SDL_Surface * surface
Definition: SDL_sysvideo.h:93
SDL_BWin.h
BE_DrawThread
int32 BE_DrawThread(void *data)
SDL_BWin::GetBytesPerPx
int32 GetBytesPerPx()
Definition: SDL_BWin.h:420
SDL_Rect
A rectangle, with the origin at the upper left.
Definition: SDL_rect.h:64