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Diffstat (limited to 'qemu/hw/audio/gusemu.h')
| -rw-r--r-- | qemu/hw/audio/gusemu.h | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/qemu/hw/audio/gusemu.h b/qemu/hw/audio/gusemu.h deleted file mode 100644 index b7f075126..000000000 --- a/qemu/hw/audio/gusemu.h +++ /dev/null @@ -1,104 +0,0 @@ -/* - * GUSEMU32 - API - * - * Copyright (C) 2000-2007 Tibor "TS" Schütz - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#ifndef GUSEMU_H -#define GUSEMU_H - -/* data types (need to be adjusted if neither a VC6 nor a C99 compatible compiler is used) */ - -#if defined _WIN32 && defined _MSC_VER /* doesn't support other win32 compilers yet, do it yourself... */ - typedef unsigned char GUSbyte; - typedef unsigned short GUSword; - typedef unsigned int GUSdword; - typedef signed char GUSchar; - typedef signed short GUSsample; -#else - typedef int8_t GUSchar; - typedef uint8_t GUSbyte; - typedef uint16_t GUSword; - typedef uint32_t GUSdword; - typedef int16_t GUSsample; -#endif - -typedef struct _GUSEmuState -{ - GUSbyte *himemaddr; /* 1024*1024 bytes used for storing uploaded samples (+32 additional bytes for read padding) */ - GUSbyte *gusdatapos; /* (gusdataend-gusdata) bytes used for storing emulated GF1/mixer register states (32*32+4 bytes in initial GUSemu32 version) */ - uint32_t gusirq; - uint32_t gusdma; - unsigned int timer1fraction; - unsigned int timer2fraction; - void *opaque; -} GUSEmuState; - -/* ** Callback functions needed: */ -/* NMI is defined as hwirq=-1 (not supported (yet?)) */ -/* GUS_irqrequest returns the number of IRQs actually scheduled into the virtual machine */ -/* Level triggered IRQ simulations normally return 1 */ -/* Event triggered IRQ simulation can safely ignore GUS_irqclear calls */ -int GUS_irqrequest(GUSEmuState *state, int hwirq, int num);/* needed in both mixer and bus emulation functions. */ -void GUS_irqclear( GUSEmuState *state, int hwirq); /* used by gus_write() only - can be left empty for mixer functions */ -void GUS_dmarequest(GUSEmuState *state); /* used by gus_write() only - can be left empty for mixer functions */ - -/* ** ISA bus interface functions: */ - -/* Port I/O handlers */ -/* support the following ports: */ -/* 2x0,2x6,2x8...2xF,3x0...3x7; */ -/* optional: 388,389 (at least writes should be forwarded or some GUS detection algorithms will fail) */ -/* data is passed in host byte order */ -unsigned int gus_read( GUSEmuState *state, int port, int size); -void gus_write(GUSEmuState *state, int port, int size, unsigned int data); -/* size is given in bytes (1 for byte, 2 for word) */ - -/* DMA data transfer function */ -/* data pointed to is passed in native x86 order */ -void gus_dma_transferdata(GUSEmuState *state, char *dma_addr, unsigned int count, int TC); -/* Called back by GUS_start_DMA as soon as the emulated DMA controller is ready for a transfer to or from GUS */ -/* (might be immediately if the DMA controller was programmed first) */ -/* dma_addr is an already translated address directly pointing to the beginning of the memory block */ -/* do not forget to update DMA states after the call, including the DREQ and TC flags */ -/* it is possible to break down a single transfer into multiple ones, but take care that: */ -/* -dma_count is actually count-1 */ -/* -before and during a transfer, DREQ is set and TC cleared */ -/* -when calling gus_dma_transferdata(), TC is only set true for call transferring the last byte */ -/* -after the last transfer, DREQ is cleared and TC is set */ - -/* ** GF1 mixer emulation functions: */ -/* Usually, gus_irqgen should be called directly after gus_mixvoices if you can meet the recommended ranges. */ -/* If the interrupts are executed immediately (i.e., are synchronous), it may be useful to break this */ -/* down into a sequence of gus_mixvoice();gus_irqgen(); calls while mixing an audio block. */ -/* If the interrupts are asynchronous, it may be needed to use a separate thread mixing into a temporary */ -/* audio buffer in order to avoid quality loss caused by large numsamples and elapsed_time values. */ - -void gus_mixvoices(GUSEmuState *state, unsigned int playback_freq, unsigned int numsamples, GUSsample *bufferpos); -/* recommended range: 10 < numsamples < 100 */ -/* lower values may result in increased rounding error, higher values often cause audible timing delays */ - -void gus_irqgen(GUSEmuState *state, unsigned int elapsed_time); -/* recommended range: 80us < elapsed_time < max(1000us, numsamples/playback_freq) */ -/* lower values won´t provide any benefit at all, higher values can cause audible timing delays */ -/* note: masked timers are also calculated by this function, thus it might be needed even without any IRQs in use! */ - -#endif /* gusemu.h */ |