Mercurial > sdl-ios-xcode
view src/video/photon/SDL_ph_video.h @ 1982:3b4ce57c6215
First shot at new audio data types (int32 and float32).
Notable changes:
- Converters between types are autogenerated. Instead of making multiple
passes over the data with seperate filters for endianess, size, signedness,
etc, converting between data types is always one specialized filter. This
simplifies SDL_BuildAudioCVT(), which otherwise had a million edge cases
with the new types, and makes the actually conversions more CPU cache
friendly. Left a stub for adding specific optimized versions of these
routines (SSE/MMX/Altivec, assembler, etc)
- Autogenerated converters are built by SDL/src/audio/sdlgenaudiocvt.pl. This
does not need to be run unless tweaking the code, and thus doesn't need
integration into the build system.
- Went through all the drivers and tried to weed out all the "Uint16"
references that are better specified with the new SDL_AudioFormat typedef.
- Cleaned out a bunch of hardcoded bitwise magic numbers and replaced them
with new SDL_AUDIO_* macros.
- Added initial float32 and int32 support code. Theoretically, existing
drivers will push these through converters to get the data they want to
feed to the hardware.
Still TODO:
- Optimize and debug new converters.
- Update the CoreAudio backend to accept float32 data directly.
- Other backends, too?
- SDL_LoadWAV() needs to be updated to support int32 and float32 .wav files
(both of which exist and can be generated by 'sox' for testing purposes).
- Update the mixer to handle new datatypes.
- Optionally update SDL_sound and SDL_mixer, etc.
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Thu, 24 Aug 2006 12:10:46 +0000 |
parents | c121d94672cb |
children | 99210400e8b9 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #ifndef __SDL_PH_VIDEO_H__ #define __SDL_PH_VIDEO_H__ #include "SDL_mouse.h" #include "../SDL_sysvideo.h" #include <sys/neutrino.h> #include <Ph.h> #include <Pt.h> #include <photon/Pg.h> #include <photon/PdDirect.h> #if SDL_VIDEO_OPENGL #if (_NTO_VERSION < 630) #include <photon/PdGL.h> #else #include <GL/qnxgl.h> #include <GL/GLPh.h> #endif /* 6.3.0 */ #endif /* SDL_VIDEO_OPENGL */ /* Hidden "this" pointer for the video functions */ #define _THIS SDL_VideoDevice* this #define PH_OGL_MAX_ATTRIBS 32 #define SDLPH_PAL_NONE 0x00000000L #define SDLPH_PAL_EMULATE 0x00000001L #define SDLPH_PAL_SYSTEM 0x00000002L typedef struct { unsigned char *Y; unsigned char *V; unsigned char *U; } FRAMEDATA; /* Mask values for SDL_ReallocFormat() */ struct ColourMasks { Uint32 red; Uint32 green; Uint32 blue; Uint32 alpha; Uint32 bpp; }; /* Private display data */ struct SDL_PrivateVideoData { PgDisplaySettings_t mode_settings; PtWidget_t *Window; /* used to handle input events */ PhImage_t *image; /* used to display image */ #if SDL_VIDEO_OPENGL #if (_NTO_VERSION < 630) PdOpenGLContext_t *OGLContext; /* OpenGL context */ void *OGLBuffers; /* OpenGL buffers (unused) */ #else qnxglc_t *OGLContext; /* OpenGL context for the 6.3 */ qnxgl_bufs_t *OGLBuffers; /* OpenGL buffers for the 6.3 */ #endif /* 630 */ Uint32 OGLFlags; /* OpenGL flags */ Uint32 OGLBPP; /* OpenGL bpp */ #endif /* SDL_VIDEO_OPENGL */ PgColor_t savedpal[_Pg_MAX_PALETTE]; PgColor_t syspalph[_Pg_MAX_PALETTE]; struct { PdDirectContext_t *direct_context; PdOffscreenContext_t *offscreen_context; PdOffscreenContext_t *offscreen_backcontext; PhDrawContext_t *oldDC; uint8_t *dc_ptr; unsigned char *CurrentFrameData; unsigned char *FrameData0; unsigned char *FrameData1; Uint32 current; Uint32 flags; } ocimage; PgHWCaps_t graphics_card_caps; /* Graphics card caps at the moment of start */ PgVideoModeInfo_t desktop_mode; /* Current desktop video mode information */ int old_video_mode; /* Stored mode before fullscreen switch */ int old_refresh_rate; /* Stored refresh rate befor fullscreen switch */ int mouse_relative; WMcursor *BlankCursor; uint32_t videomode_emulatemode; Uint32 visualbpp; /* current visual bpp */ Uint32 desktopbpp; /* bpp of desktop at the moment of start */ Uint32 desktoppal; /* palette mode emulation or system */ int currently_fullscreen; int currently_hided; /* 1 - window hided (minimazed), 0 - normal */ int currently_maximized; /* 1 - window hided (minimazed), 0 - normal */ PhEvent_t *event; SDL_Overlay *overlay; }; #define mode_settings (this->hidden->mode_settings) #define window (this->hidden->Window) #define SDL_Image (this->hidden->image) #define OCImage (this->hidden->ocimage) #define old_video_mode (this->hidden->old_video_mode) #define old_refresh_rate (this->hidden->old_refresh_rate) #define graphics_card_caps (this->hidden->graphics_card_caps) #define desktopbpp (this->hidden->desktopbpp) #define visualbpp (this->hidden->visualbpp) #define desktoppal (this->hidden->desktoppal) #define savedpal (this->hidden->savedpal) #define syspalph (this->hidden->syspalph) #define currently_fullscreen (this->hidden->currently_fullscreen) #define currently_hided (this->hidden->currently_hided) #define currently_maximized (this->hidden->currently_maximized) #define phevent (this->hidden->event) #define current_overlay (this->hidden->overlay) #define desktop_mode (this->hidden->desktop_mode) #define mouse_relative (this->hidden->mouse_relative) #define SDL_BlankCursor (this->hidden->BlankCursor) #define videomode_emulatemode (this->hidden->videomode_emulatemode) #if SDL_VIDEO_OPENGL #define oglctx (this->hidden->OGLContext) #define oglbuffers (this->hidden->OGLBuffers) #define oglflags (this->hidden->OGLFlags) #define oglbpp (this->hidden->OGLBPP) #endif /* SDL_VIDEO_OPENGL */ #endif /* __SDL_PH_VIDEO_H__ */ /* vi: set ts=4 sw=4 expandtab: */