From 46be48730333120a7b939116cef075e61c12c703 Mon Sep 17 00:00:00 2001 From: David 'Digit' Turner Date: Thu, 4 Jun 2009 16:07:01 +0200 Subject: Add our modified SDL sources under distrib/sdl-1.2.12 Fix distrib/make-distrib.sh script to work with git Fix distrib/build-emulator.sh to accomodate for new SDL configure script Handle Tiger SDK usage in SDL configure script --- distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio.c | 215 +++++++++ distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio.h | 153 +++++++ .../sdl-1.2.12/src/audio/mint/SDL_mintaudio_dma8.c | 361 +++++++++++++++ .../sdl-1.2.12/src/audio/mint/SDL_mintaudio_dma8.h | 85 ++++ .../sdl-1.2.12/src/audio/mint/SDL_mintaudio_gsxb.c | 436 ++++++++++++++++++ .../sdl-1.2.12/src/audio/mint/SDL_mintaudio_gsxb.h | 108 +++++ .../sdl-1.2.12/src/audio/mint/SDL_mintaudio_it.S | 281 ++++++++++++ .../sdl-1.2.12/src/audio/mint/SDL_mintaudio_mcsn.c | 404 +++++++++++++++++ .../sdl-1.2.12/src/audio/mint/SDL_mintaudio_mcsn.h | 59 +++ .../sdl-1.2.12/src/audio/mint/SDL_mintaudio_stfa.c | 323 ++++++++++++++ .../sdl-1.2.12/src/audio/mint/SDL_mintaudio_stfa.h | 100 +++++ .../src/audio/mint/SDL_mintaudio_xbios.c | 495 +++++++++++++++++++++ 12 files changed, 3020 insertions(+) create mode 100644 distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio.c create mode 100644 distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio.h create mode 100644 distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_dma8.c create mode 100644 distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_dma8.h create mode 100644 distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_gsxb.c create mode 100644 distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_gsxb.h create mode 100644 distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_it.S create mode 100644 distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_mcsn.c create mode 100644 distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_mcsn.h create mode 100644 distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_stfa.c create mode 100644 distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_stfa.h create mode 100644 distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_xbios.c (limited to 'distrib/sdl-1.2.12/src/audio/mint') diff --git a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio.c b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio.c new file mode 100644 index 0000000..afdec64 --- /dev/null +++ b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio.c @@ -0,0 +1,215 @@ +/* + 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" + +/* + Audio interrupt variables and callback function + + Patrice Mandin +*/ + +#include + +#include +#include +#include +#include + +#include "SDL_audio.h" +#include "SDL_mintaudio.h" +#include "SDL_mintaudio_stfa.h" + +/* The audio device */ + +SDL_AudioDevice *SDL_MintAudio_device; +Uint8 *SDL_MintAudio_audiobuf[2]; /* Pointers to buffers */ +unsigned long SDL_MintAudio_audiosize; /* Length of audio buffer=spec->size */ +volatile unsigned short SDL_MintAudio_numbuf; /* Buffer to play */ +volatile unsigned short SDL_MintAudio_mutex; +volatile unsigned long SDL_MintAudio_clocktics; +cookie_stfa_t *SDL_MintAudio_stfa; +unsigned short SDL_MintAudio_hasfpu; + +/* MiNT thread variables */ +SDL_bool SDL_MintAudio_mint_present; +SDL_bool SDL_MintAudio_quit_thread; +SDL_bool SDL_MintAudio_thread_finished; +long SDL_MintAudio_thread_pid; + +/* The callback function, called by each driver whenever needed */ + +void SDL_MintAudio_Callback(void) +{ + Uint8 *buffer; + SDL_AudioDevice *audio = SDL_MintAudio_device; + + buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf]; + SDL_memset(buffer, audio->spec.silence, audio->spec.size); + + if (audio->paused) + return; + + if (audio->convert.needed) { + int silence; + + if ( audio->convert.src_format == AUDIO_U8 ) { + silence = 0x80; + } else { + silence = 0; + } + SDL_memset(audio->convert.buf, silence, audio->convert.len); + audio->spec.callback(audio->spec.userdata, + (Uint8 *)audio->convert.buf,audio->convert.len); + SDL_ConvertAudio(&audio->convert); + SDL_memcpy(buffer, audio->convert.buf, audio->convert.len_cvt); + } else { + audio->spec.callback(audio->spec.userdata, buffer, audio->spec.size); + } +} + +/* Add a new frequency/clock/predivisor to the current list */ +void SDL_MintAudio_AddFrequency(_THIS, Uint32 frequency, Uint32 clock, + Uint32 prediv, int gpio_bits) +{ + int i, p; + + if (MINTAUDIO_freqcount==MINTAUDIO_maxfreqs) { + return; + } + + /* Search where to insert the frequency (highest first) */ + for (p=0; p MINTAUDIO_frequencies[p].frequency) { + break; + } + } + + /* Put all following ones farer */ + if (MINTAUDIO_freqcount>0) { + for (i=MINTAUDIO_freqcount; i>p; i--) { + SDL_memcpy(&MINTAUDIO_frequencies[i], &MINTAUDIO_frequencies[i-1], sizeof(mint_frequency_t)); + } + } + + /* And insert new one */ + MINTAUDIO_frequencies[p].frequency = frequency; + MINTAUDIO_frequencies[p].masterclock = clock; + MINTAUDIO_frequencies[p].predivisor = prediv; + MINTAUDIO_frequencies[p].gpio_bits = gpio_bits; + + MINTAUDIO_freqcount++; +} + +/* Search for the nearest frequency */ +int SDL_MintAudio_SearchFrequency(_THIS, int desired_freq) +{ + int i; + + /* Only 1 freq ? */ + if (MINTAUDIO_freqcount==1) { + return 0; + } + + /* Check the array */ + for (i=0; i= ((MINTAUDIO_frequencies[i].frequency+ + MINTAUDIO_frequencies[i+1].frequency)>>1)) { + return i; + } + } + + /* Not in the array, give the latest */ + return MINTAUDIO_freqcount-1; +} + +/* Check if FPU is present */ +void SDL_MintAudio_CheckFpu(void) +{ + unsigned long cookie_fpu; + + SDL_MintAudio_hasfpu = 0; + if (Getcookie(C__FPU, &cookie_fpu) != C_FOUND) { + return; + } + switch ((cookie_fpu>>16)&0xfffe) { + case 2: + case 4: + case 6: + case 8: + case 16: + SDL_MintAudio_hasfpu = 1; + break; + } +} + +/* The thread function, used under MiNT with xbios */ +int SDL_MintAudio_Thread(long param) +{ + SndBufPtr pointers; + SDL_bool buffers_filled[2] = {SDL_FALSE, SDL_FALSE}; + + SDL_MintAudio_thread_finished = SDL_FALSE; + while (!SDL_MintAudio_quit_thread) { + if (Buffptr(&pointers)!=0) + continue; + + if (( (unsigned long)pointers.play>=(unsigned long)SDL_MintAudio_audiobuf[0]) + && ( (unsigned long)pointers.play<=(unsigned long)SDL_MintAudio_audiobuf[1])) + { + /* DMA is reading buffer #0, setup buffer #1 if not already done */ + if (!buffers_filled[1]) { + SDL_MintAudio_numbuf = 1; + SDL_MintAudio_Callback(); + Setbuffer(0, SDL_MintAudio_audiobuf[1], SDL_MintAudio_audiobuf[1] + SDL_MintAudio_audiosize); + buffers_filled[1]=SDL_TRUE; + buffers_filled[0]=SDL_FALSE; + } + } else { + /* DMA is reading buffer #1, setup buffer #0 if not already done */ + if (!buffers_filled[0]) { + SDL_MintAudio_numbuf = 0; + SDL_MintAudio_Callback(); + Setbuffer(0, SDL_MintAudio_audiobuf[0], SDL_MintAudio_audiobuf[0] + SDL_MintAudio_audiosize); + buffers_filled[0]=SDL_TRUE; + buffers_filled[1]=SDL_FALSE; + } + } + + usleep(100); + } + SDL_MintAudio_thread_finished = SDL_TRUE; + return 0; +} + +void SDL_MintAudio_WaitThread(void) +{ + if (!SDL_MintAudio_mint_present) + return; + + if (SDL_MintAudio_thread_finished) + return; + + SDL_MintAudio_quit_thread = SDL_TRUE; + while (!SDL_MintAudio_thread_finished) { + Syield(); + } +} diff --git a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio.h b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio.h new file mode 100644 index 0000000..9a02580 --- /dev/null +++ b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio.h @@ -0,0 +1,153 @@ +/* + 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" + +/* + MiNT audio driver + + Patrice Mandin +*/ + +#ifndef _SDL_mintaudio_h +#define _SDL_mintaudio_h + +#include "../SDL_sysaudio.h" +#include "SDL_mintaudio_stfa.h" + +/* Hidden "this" pointer for the audio functions */ +#define _THIS SDL_AudioDevice *this + +/* 16 predivisors with 3 clocks max. */ +#define MINTAUDIO_maxfreqs (16*3) + +typedef struct { + Uint32 frequency; + Uint32 masterclock; + Uint32 predivisor; + int gpio_bits; /* in case of external clock */ +} mint_frequency_t; + +struct SDL_PrivateAudioData { + mint_frequency_t frequencies[MINTAUDIO_maxfreqs]; + int freq_count; /* Number of frequencies in the array */ + int numfreq; /* Number of selected frequency */ +}; + +/* Old variable names */ + +#define MINTAUDIO_frequencies (this->hidden->frequencies) +#define MINTAUDIO_freqcount (this->hidden->freq_count) +#define MINTAUDIO_numfreq (this->hidden->numfreq) + +/* _MCH cookie (values>>16) */ +enum { + MCH_ST=0, + MCH_STE, + MCH_TT, + MCH_F30, + MCH_CLONE, + MCH_ARANYM +}; + +/* Master clocks for replay frequencies */ +#define MASTERCLOCK_STE 8010666 /* Not sure of this one */ +#define MASTERCLOCK_TT 16107953 /* Not sure of this one */ +#define MASTERCLOCK_FALCON1 25175000 +#define MASTERCLOCK_FALCON2 32000000 /* Only usable for DSP56K */ +#define MASTERCLOCK_FALCONEXT -1 /* Clock on DSP56K port, unknown */ +#define MASTERCLOCK_44K 22579200 /* Standard clock for 44.1 Khz */ +#define MASTERCLOCK_48K 24576000 /* Standard clock for 48 Khz */ + +/* Master clock predivisors */ +#define MASTERPREDIV_STE 160 +#define MASTERPREDIV_TT 320 +#define MASTERPREDIV_FALCON 256 +#define MASTERPREDIV_MILAN 256 + +/* MFP 68901 interrupt sources */ +enum { + MFP_PARALLEL=0, + MFP_DCD, + MFP_CTS, + MFP_BITBLT, + MFP_TIMERD, + MFP_BAUDRATE=MFP_TIMERD, + MFP_TIMERC, + MFP_200HZ=MFP_TIMERC, + MFP_ACIA, + MFP_DISK, + MFP_TIMERB, + MFP_HBLANK=MFP_TIMERB, + MFP_TERR, + MFP_TBE, + MFP_RERR, + MFP_RBF, + MFP_TIMERA, + MFP_DMASOUND=MFP_TIMERA, + MFP_RING, + MFP_MONODETECT +}; + +/* Xbtimer() timers */ +enum { + XB_TIMERA=0, + XB_TIMERB, + XB_TIMERC, + XB_TIMERD +}; + +/* Variables */ +extern SDL_AudioDevice *SDL_MintAudio_device; +extern Uint8 *SDL_MintAudio_audiobuf[2]; /* Pointers to buffers */ +extern unsigned long SDL_MintAudio_audiosize; /* Length of audio buffer=spec->size */ +extern volatile unsigned short SDL_MintAudio_numbuf; /* Buffer to play */ +extern volatile unsigned short SDL_MintAudio_mutex; +extern cookie_stfa_t *SDL_MintAudio_stfa; +extern volatile unsigned long SDL_MintAudio_clocktics; +extern unsigned short SDL_MintAudio_hasfpu; /* To preserve fpu registers if needed */ + +/* MiNT thread variables */ +extern SDL_bool SDL_MintAudio_mint_present; +extern SDL_bool SDL_MintAudio_quit_thread; +extern SDL_bool SDL_MintAudio_thread_finished; +extern long SDL_MintAudio_thread_pid; + +/* Functions */ +void SDL_MintAudio_Callback(void); +void SDL_MintAudio_AddFrequency(_THIS, Uint32 frequency, Uint32 clock, + Uint32 prediv, int gpio_bits); +int SDL_MintAudio_SearchFrequency(_THIS, int desired_freq); +void SDL_MintAudio_CheckFpu(void); + +/* MiNT thread functions */ +int SDL_MintAudio_Thread(long param); +void SDL_MintAudio_WaitThread(void); + +/* ASM interrupt functions */ +void SDL_MintAudio_GsxbInterrupt(void); +void SDL_MintAudio_EmptyGsxbInterrupt(void); +void SDL_MintAudio_XbiosInterruptMeasureClock(void); +void SDL_MintAudio_XbiosInterrupt(void); +void SDL_MintAudio_Dma8Interrupt(void); +void SDL_MintAudio_StfaInterrupt(void); + +#endif /* _SDL_mintaudio_h */ diff --git a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_dma8.c b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_dma8.c new file mode 100644 index 0000000..d4c43cf --- /dev/null +++ b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_dma8.c @@ -0,0 +1,361 @@ +/* + 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" + +/* + MiNT audio driver + using DMA 8bits (hardware access) + + Patrice Mandin +*/ + +/* Mint includes */ +#include +#include +#include + +#include "SDL_audio.h" +#include "../SDL_audio_c.h" +#include "../SDL_sysaudio.h" + +#include "../../video/ataricommon/SDL_atarimxalloc_c.h" + +#include "SDL_mintaudio.h" +#include "SDL_mintaudio_dma8.h" + +/*--- Defines ---*/ + +#define MINT_AUDIO_DRIVER_NAME "mint_dma8" + +/* Debug print info */ +#define DEBUG_NAME "audio:dma8: " +#if 0 +#define DEBUG_PRINT(what) \ + { \ + printf what; \ + } +#else +#define DEBUG_PRINT(what) +#endif + +/*--- Static variables ---*/ + +static unsigned long cookie_snd, cookie_mch; + +/*--- Audio driver functions ---*/ + +static void Mint_CloseAudio(_THIS); +static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec); +static void Mint_LockAudio(_THIS); +static void Mint_UnlockAudio(_THIS); + +/* To check/init hardware audio */ +static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec); +static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec); + +/*--- Audio driver bootstrap functions ---*/ + +static int Audio_Available(void) +{ + const char *envr = SDL_getenv("SDL_AUDIODRIVER"); + + /* Check if user asked a different audio driver */ + if ((envr) && (SDL_strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) { + DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n")); + return 0; + } + + /* Cookie _MCH present ? if not, assume ST machine */ + if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) { + cookie_mch = MCH_ST; + } + + /* Cookie _SND present ? if not, assume ST machine */ + if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) { + cookie_snd = SND_PSG; + } + + /* Check if we have 8 bits audio */ + if ((cookie_snd & SND_8BIT)==0) { + DEBUG_PRINT((DEBUG_NAME "no 8 bits sound\n")); + return(0); + } + + /* Check if audio is lockable */ + if (cookie_snd & SND_16BIT) { + if (Locksnd()!=1) { + DEBUG_PRINT((DEBUG_NAME "audio locked by other application\n")); + return(0); + } + + Unlocksnd(); + } + + DEBUG_PRINT((DEBUG_NAME "8 bits audio available!\n")); + return(1); +} + +static void Audio_DeleteDevice(SDL_AudioDevice *device) +{ + SDL_free(device->hidden); + SDL_free(device); +} + +static SDL_AudioDevice *Audio_CreateDevice(int devindex) +{ + SDL_AudioDevice *this; + + /* Initialize all variables that we clean on shutdown */ + this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice)); + if ( this ) { + SDL_memset(this, 0, (sizeof *this)); + this->hidden = (struct SDL_PrivateAudioData *) + SDL_malloc((sizeof *this->hidden)); + } + if ( (this == NULL) || (this->hidden == NULL) ) { + SDL_OutOfMemory(); + if ( this ) { + SDL_free(this); + } + return(0); + } + SDL_memset(this->hidden, 0, (sizeof *this->hidden)); + + /* Set the function pointers */ + this->OpenAudio = Mint_OpenAudio; + this->CloseAudio = Mint_CloseAudio; + this->LockAudio = Mint_LockAudio; + this->UnlockAudio = Mint_UnlockAudio; + this->free = Audio_DeleteDevice; + + return this; +} + +AudioBootStrap MINTAUDIO_DMA8_bootstrap = { + MINT_AUDIO_DRIVER_NAME, "MiNT DMA 8 bits audio driver", + Audio_Available, Audio_CreateDevice +}; + +static void Mint_LockAudio(_THIS) +{ + void *oldpile; + + /* Stop replay */ + oldpile=(void *)Super(0); + DMAAUDIO_IO.control=0; + Super(oldpile); +} + +static void Mint_UnlockAudio(_THIS) +{ + void *oldpile; + + /* Restart replay */ + oldpile=(void *)Super(0); + DMAAUDIO_IO.control=3; + Super(oldpile); +} + +static void Mint_CloseAudio(_THIS) +{ + void *oldpile; + + /* Stop replay */ + oldpile=(void *)Super(0); + DMAAUDIO_IO.control=0; + Super(oldpile); + + DEBUG_PRINT((DEBUG_NAME "closeaudio: replay stopped\n")); + + /* Disable interrupt */ + Jdisint(MFP_DMASOUND); + + DEBUG_PRINT((DEBUG_NAME "closeaudio: interrupt disabled\n")); + + /* Wait if currently playing sound */ + while (SDL_MintAudio_mutex != 0) { + } + + DEBUG_PRINT((DEBUG_NAME "closeaudio: no more interrupt running\n")); + + /* Clear buffers */ + if (SDL_MintAudio_audiobuf[0]) { + Mfree(SDL_MintAudio_audiobuf[0]); + SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL; + } + + DEBUG_PRINT((DEBUG_NAME "closeaudio: buffers freed\n")); +} + +static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec) +{ + int i, masterprediv, sfreq; + unsigned long masterclock; + + DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff)); + DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); + DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); + DEBUG_PRINT(("channels=%d, ", spec->channels)); + DEBUG_PRINT(("freq=%d\n", spec->freq)); + + if (spec->channels > 2) + spec->channels = 2; + + /* Check formats available */ + spec->format = AUDIO_S8; + + /* Calculate and select the closest frequency */ + sfreq=0; + masterclock=MASTERCLOCK_STE; + masterprediv=MASTERPREDIV_STE; + switch(cookie_mch>>16) { +/* + case MCH_STE: + masterclock=MASTERCLOCK_STE; + masterprediv=MASTERPREDIV_STE; + break; +*/ + case MCH_TT: + masterclock=MASTERCLOCK_TT; + masterprediv=MASTERPREDIV_TT; + break; + case MCH_F30: + case MCH_ARANYM: + masterclock=MASTERCLOCK_FALCON1; + masterprediv=MASTERPREDIV_FALCON; + sfreq=1; + break; + } + + MINTAUDIO_freqcount=0; + for (i=sfreq;i<4;i++) { + SDL_MintAudio_AddFrequency(this, masterclock/(masterprediv*(1<freq); + spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency; + + DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff)); + DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); + DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); + DEBUG_PRINT(("channels=%d, ", spec->channels)); + DEBUG_PRINT(("freq=%d\n", spec->freq)); + + return 0; +} + +static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec) +{ + void *oldpile; + unsigned long buffer; + unsigned char mode; + + /* Set replay tracks */ + if (cookie_snd & SND_16BIT) { + Settracks(0,0); + Setmontracks(0); + } + + oldpile=(void *)Super(0); + + /* Stop currently playing sound */ + DMAAUDIO_IO.control=0; + + /* Set buffer */ + buffer = (unsigned long) SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf]; + DMAAUDIO_IO.start_high = (buffer>>16) & 255; + DMAAUDIO_IO.start_mid = (buffer>>8) & 255; + DMAAUDIO_IO.start_low = buffer & 255; + + buffer += SDL_MintAudio_audiosize; + DMAAUDIO_IO.end_high = (buffer>>16) & 255; + DMAAUDIO_IO.end_mid = (buffer>>8) & 255; + DMAAUDIO_IO.end_low = buffer & 255; + + mode = 3-MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor; + if (spec->channels==1) { + mode |= 1<<7; + } + DMAAUDIO_IO.sound_ctrl = mode; + + /* Set interrupt */ + Jdisint(MFP_DMASOUND); + Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_Dma8Interrupt); + Jenabint(MFP_DMASOUND); + + if (cookie_snd & SND_16BIT) { + if (Setinterrupt(SI_TIMERA, SI_PLAY)<0) { + DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n")); + } + } + + /* Go */ + DMAAUDIO_IO.control = 3; /* playback + repeat */ + + Super(oldpile); +} + +static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec) +{ + SDL_MintAudio_device = this; + + /* Check audio capabilities */ + if (Mint_CheckAudio(this, spec)==-1) { + return -1; + } + + SDL_CalculateAudioSpec(spec); + + /* Allocate memory for audio buffers in DMA-able RAM */ + DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size)); + + SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM); + if (SDL_MintAudio_audiobuf[0]==NULL) { + SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer"); + return (-1); + } + SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ; + SDL_MintAudio_numbuf=0; + SDL_memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2); + SDL_MintAudio_audiosize = spec->size; + SDL_MintAudio_mutex = 0; + + DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0])); + DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); + + SDL_MintAudio_CheckFpu(); + + /* Setup audio hardware */ + Mint_InitAudio(this, spec); + + return(1); /* We don't use threaded audio */ +} diff --git a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_dma8.h b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_dma8.h new file mode 100644 index 0000000..698fed4 --- /dev/null +++ b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_dma8.h @@ -0,0 +1,85 @@ +/* + 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" + +/* + DMA 8bits and Falcon Codec audio definitions + + Patrice Mandin, Didier Méquignon +*/ + +#ifndef _SDL_mintaudio_dma8_h +#define _SDL_mintaudio_dma8_h + +#define DMAAUDIO_IO_BASE (0xffff8900) +struct DMAAUDIO_IO_S { + unsigned char int_ctrl; + unsigned char control; + + unsigned char dummy1; + unsigned char start_high; + unsigned char dummy2; + unsigned char start_mid; + unsigned char dummy3; + unsigned char start_low; + + unsigned char dummy4; + unsigned char cur_high; + unsigned char dummy5; + unsigned char cur_mid; + unsigned char dummy6; + unsigned char cur_low; + + unsigned char dummy7; + unsigned char end_high; + unsigned char dummy8; + unsigned char end_mid; + unsigned char dummy9; + unsigned char end_low; + + unsigned char dummy10[12]; + + unsigned char track_ctrl; /* CODEC only */ + unsigned char sound_ctrl; + unsigned short sound_data; + unsigned short sound_mask; + + unsigned char dummy11[10]; + + unsigned short dev_ctrl; + unsigned short dest_ctrl; + unsigned short sync_div; + unsigned char track_rec; + unsigned char adderin_input; + unsigned char channel_input; + unsigned char channel_amplification; + unsigned char channel_reduction; + + unsigned char dummy12[6]; + + unsigned char data_direction; + unsigned char dummy13; + unsigned char dev_data; +}; +#define DMAAUDIO_IO ((*(volatile struct DMAAUDIO_IO_S *)DMAAUDIO_IO_BASE)) + +#endif /* _SDL_mintaudio_dma8_h */ diff --git a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_gsxb.c b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_gsxb.c new file mode 100644 index 0000000..41f78c9 --- /dev/null +++ b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_gsxb.c @@ -0,0 +1,436 @@ +/* + 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" + +/* + MiNT audio driver + using XBIOS functions (GSXB compatible driver) + + Patrice Mandin +*/ + +/* Mint includes */ +#include +#include +#include + +#include "SDL_audio.h" +#include "../SDL_audio_c.h" +#include "../SDL_sysaudio.h" + +#include "../../video/ataricommon/SDL_atarimxalloc_c.h" + +#include "SDL_mintaudio.h" +#include "SDL_mintaudio_gsxb.h" + +/*--- Defines ---*/ + +#define MINT_AUDIO_DRIVER_NAME "mint_gsxb" + +/* Debug print info */ +#define DEBUG_NAME "audio:gsxb: " +#if 0 +#define DEBUG_PRINT(what) \ + { \ + printf what; \ + } +#else +#define DEBUG_PRINT(what) +#endif + +/*--- Static variables ---*/ + +static unsigned long cookie_snd, cookie_gsxb; + +/*--- Audio driver functions ---*/ + +static void Mint_CloseAudio(_THIS); +static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec); +static void Mint_LockAudio(_THIS); +static void Mint_UnlockAudio(_THIS); + +/* To check/init hardware audio */ +static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec); +static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec); + +/* GSXB callbacks */ +static void Mint_GsxbInterrupt(void); +static void Mint_GsxbNullInterrupt(void); + +/*--- Audio driver bootstrap functions ---*/ + +static int Audio_Available(void) +{ + const char *envr = SDL_getenv("SDL_AUDIODRIVER"); + + /* Check if user asked a different audio driver */ + if ((envr) && (SDL_strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) { + DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n")); + return(0); + } + + /* Cookie _SND present ? if not, assume ST machine */ + if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) { + cookie_snd = SND_PSG; + } + + /* Check if we have 16 bits audio */ + if ((cookie_snd & SND_16BIT)==0) { + DEBUG_PRINT((DEBUG_NAME "no 16 bits sound\n")); + return(0); + } + + /* Cookie GSXB present ? */ + cookie_gsxb = (Getcookie(C_GSXB, &cookie_gsxb) == C_FOUND); + + /* Is it GSXB ? */ + if (((cookie_snd & SND_GSXB)==0) || (cookie_gsxb==0)) { + DEBUG_PRINT((DEBUG_NAME "no GSXB audio\n")); + return(0); + } + + /* Check if audio is lockable */ + if (Locksnd()!=1) { + DEBUG_PRINT((DEBUG_NAME "audio locked by other application\n")); + return(0); + } + + Unlocksnd(); + + DEBUG_PRINT((DEBUG_NAME "GSXB audio available!\n")); + return(1); +} + +static void Audio_DeleteDevice(SDL_AudioDevice *device) +{ + SDL_free(device->hidden); + SDL_free(device); +} + +static SDL_AudioDevice *Audio_CreateDevice(int devindex) +{ + SDL_AudioDevice *this; + + /* Initialize all variables that we clean on shutdown */ + this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice)); + if ( this ) { + SDL_memset(this, 0, (sizeof *this)); + this->hidden = (struct SDL_PrivateAudioData *) + SDL_malloc((sizeof *this->hidden)); + } + if ( (this == NULL) || (this->hidden == NULL) ) { + SDL_OutOfMemory(); + if ( this ) { + SDL_free(this); + } + return(0); + } + SDL_memset(this->hidden, 0, (sizeof *this->hidden)); + + /* Set the function pointers */ + this->OpenAudio = Mint_OpenAudio; + this->CloseAudio = Mint_CloseAudio; + this->LockAudio = Mint_LockAudio; + this->UnlockAudio = Mint_UnlockAudio; + this->free = Audio_DeleteDevice; + + return this; +} + +AudioBootStrap MINTAUDIO_GSXB_bootstrap = { + MINT_AUDIO_DRIVER_NAME, "MiNT GSXB audio driver", + Audio_Available, Audio_CreateDevice +}; + +static void Mint_LockAudio(_THIS) +{ + /* Stop replay */ + Buffoper(0); +} + +static void Mint_UnlockAudio(_THIS) +{ + /* Restart replay */ + Buffoper(SB_PLA_ENA|SB_PLA_RPT); +} + +static void Mint_CloseAudio(_THIS) +{ + /* Stop replay */ + Buffoper(0); + + /* Uninstall interrupt */ + if (NSetinterrupt(2, SI_NONE, Mint_GsxbNullInterrupt)<0) { + DEBUG_PRINT((DEBUG_NAME "NSetinterrupt() failed in close\n")); + } + + /* Wait if currently playing sound */ + while (SDL_MintAudio_mutex != 0) { + } + + /* Clear buffers */ + if (SDL_MintAudio_audiobuf[0]) { + Mfree(SDL_MintAudio_audiobuf[0]); + SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL; + } + + /* Unlock sound system */ + Unlocksnd(); +} + +static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec) +{ + long snd_format; + int i, resolution, format_signed, format_bigendian; + Uint16 test_format = SDL_FirstAudioFormat(spec->format); + int valid_datatype = 0; + + resolution = spec->format & 0x00ff; + format_signed = ((spec->format & 0x8000)!=0); + format_bigendian = ((spec->format & 0x1000)!=0); + + DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff)); + DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); + DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); + DEBUG_PRINT(("channels=%d, ", spec->channels)); + DEBUG_PRINT(("freq=%d\n", spec->freq)); + + if (spec->channels > 2) { + spec->channels = 2; /* no more than stereo! */ + } + + while ((!valid_datatype) && (test_format)) { + /* Check formats available */ + snd_format = Sndstatus(SND_QUERYFORMATS); + spec->format = test_format; + resolution = spec->format & 0xff; + format_signed = (spec->format & (1<<15)); + format_bigendian = (spec->format & (1<<12)); + switch (test_format) { + case AUDIO_U8: + case AUDIO_S8: + if (snd_format & SND_FORMAT8) { + valid_datatype = 1; + snd_format = Sndstatus(SND_QUERY8BIT); + } + break; + + case AUDIO_U16LSB: + case AUDIO_S16LSB: + case AUDIO_U16MSB: + case AUDIO_S16MSB: + if (snd_format & SND_FORMAT16) { + valid_datatype = 1; + snd_format = Sndstatus(SND_QUERY16BIT); + } + break; + + default: + test_format = SDL_NextAudioFormat(); + break; + } + } + + if (!valid_datatype) { + SDL_SetError("Unsupported audio format"); + return (-1); + } + + /* Check signed/unsigned format */ + if (format_signed) { + if (snd_format & SND_FORMATSIGNED) { + /* Ok */ + } else if (snd_format & SND_FORMATUNSIGNED) { + /* Give unsigned format */ + spec->format = spec->format & (~0x8000); + } + } else { + if (snd_format & SND_FORMATUNSIGNED) { + /* Ok */ + } else if (snd_format & SND_FORMATSIGNED) { + /* Give signed format */ + spec->format |= 0x8000; + } + } + + if (format_bigendian) { + if (snd_format & SND_FORMATBIGENDIAN) { + /* Ok */ + } else if (snd_format & SND_FORMATLITTLEENDIAN) { + /* Give little endian format */ + spec->format = spec->format & (~0x1000); + } + } else { + if (snd_format & SND_FORMATLITTLEENDIAN) { + /* Ok */ + } else if (snd_format & SND_FORMATBIGENDIAN) { + /* Give big endian format */ + spec->format |= 0x1000; + } + } + + /* Calculate and select the closest frequency */ + MINTAUDIO_freqcount=0; + for (i=1;i<4;i++) { + SDL_MintAudio_AddFrequency(this, + MASTERCLOCK_44K/(MASTERPREDIV_MILAN*(1<freq); + spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency; + + DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff)); + DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); + DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); + DEBUG_PRINT(("channels=%d, ", spec->channels)); + DEBUG_PRINT(("freq=%d\n", spec->freq)); + + return 0; +} + +static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec) +{ + int channels_mode, prediv; + void *buffer; + + /* Stop currently playing sound */ + Buffoper(0); + + /* Set replay tracks */ + Settracks(0,0); + Setmontracks(0); + + /* Select replay format */ + switch (spec->format & 0xff) { + case 8: + if (spec->channels==2) { + channels_mode=STEREO8; + } else { + channels_mode=MONO8; + } + break; + case 16: + if (spec->channels==2) { + channels_mode=STEREO16; + } else { + channels_mode=MONO16; + } + break; + default: + channels_mode=STEREO16; + break; + } + if (Setmode(channels_mode)<0) { + DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n")); + } + + prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor; + Devconnect(DMAPLAY, DAC, CLKEXT, prediv, 1); + + /* Set buffer */ + buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf]; + if (Setbuffer(0, buffer, buffer + spec->size)<0) { + DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n")); + } + + /* Install interrupt */ + if (NSetinterrupt(2, SI_PLAY, Mint_GsxbInterrupt)<0) { + DEBUG_PRINT((DEBUG_NAME "NSetinterrupt() failed\n")); + } + + /* Go */ + Buffoper(SB_PLA_ENA|SB_PLA_RPT); + DEBUG_PRINT((DEBUG_NAME "hardware initialized\n")); +} + +static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec) +{ + /* Lock sound system */ + if (Locksnd()!=1) { + SDL_SetError("Mint_OpenAudio: Audio system already in use"); + return(-1); + } + + SDL_MintAudio_device = this; + + /* Check audio capabilities */ + if (Mint_CheckAudio(this, spec)==-1) { + return -1; + } + + SDL_CalculateAudioSpec(spec); + + /* Allocate memory for audio buffers in DMA-able RAM */ + DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size)); + + SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM); + if (SDL_MintAudio_audiobuf[0]==NULL) { + SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer"); + return (-1); + } + SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ; + SDL_MintAudio_numbuf=0; + SDL_memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2); + SDL_MintAudio_audiosize = spec->size; + SDL_MintAudio_mutex = 0; + + DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0])); + DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); + + SDL_MintAudio_CheckFpu(); + + /* Setup audio hardware */ + Mint_InitAudio(this, spec); + + return(1); /* We don't use threaded audio */ +} + +static void Mint_GsxbInterrupt(void) +{ + Uint8 *newbuf; + + if (SDL_MintAudio_mutex) + return; + + SDL_MintAudio_mutex=1; + + SDL_MintAudio_numbuf ^= 1; + SDL_MintAudio_Callback(); + newbuf = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf]; + Setbuffer(0, newbuf, newbuf + SDL_MintAudio_audiosize); + + SDL_MintAudio_mutex=0; +} + +static void Mint_GsxbNullInterrupt(void) +{ +} diff --git a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_gsxb.h b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_gsxb.h new file mode 100644 index 0000000..595e313 --- /dev/null +++ b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_gsxb.h @@ -0,0 +1,108 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2006 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ +#include "SDL_config.h" + +/* + * GSXB audio definitions + * + * Patrice Mandin + */ + +#ifndef _SDL_mintaudio_gsxb_h +#define _SDL_mintaudio_gsxb_h + +#include /* for trap_14_xxx macros */ + +/* GSXB Cookie */ + +#define C_GSXB 0x47535842L + +/* Bit 5 in cookie _SND */ + +#define SND_GSXB (1<<5) + +/* NSoundcmd modes */ + +#define SETRATE 7 /* Set sample rate */ +#define SET8BITFORMAT 8 /* 8 bits format */ +#define SET16BITFORMAT 9 /* 16 bits format */ +#define SET24BITFORMAT 10 /* 24 bits format */ +#define SET32BITFORMAT 11 /* 32 bits format */ +#define LTATTEN_MASTER 12 /* Attenuation */ +#define RTATTEN_MASTER 13 +#define LTATTEN_MICIN 14 +#define RTATTEN_MICIN 15 +#define LTATTEN_FMGEN 16 +#define RTATTEN_FMGEN 17 +#define LTATTEN_LINEIN 18 +#define RTATTEN_LINEIN 19 +#define LTATTEN_CDIN 20 +#define RTATTEN_CDIN 21 +#define LTATTEN_VIDIN 22 +#define RTATTEN_VIDIN 23 +#define LTATTEN_AUXIN 24 +#define RTATTEN_AUXIN 25 + +/* Setmode modes */ + +#define MONO16 3 +#define STEREO24 4 +#define STEREO32 5 +#define MONO24 6 +#define MONO32 7 + +/* Sndstatus modes */ + +#define SND_QUERYFORMATS 2 +#define SND_QUERYMIXERS 3 +#define SND_QUERYSOURCES 4 +#define SND_QUERYDUPLEX 5 +#define SND_QUERY8BIT 8 +#define SND_QUERY16BIT 9 +#define SND_QUERY24BIT 10 +#define SND_QUERY32BIT 11 + +#define SND_FORMAT8 (1<<0) +#define SND_FORMAT16 (1<<1) +#define SND_FORMAT24 (1<<2) +#define SND_FORMAT32 (1<<3) + +#define SND_FORMATSIGNED (1<<0) +#define SND_FORMATUNSIGNED (1<<1) +#define SND_FORMATBIGENDIAN (1<<2) +#define SND_FORMATLITTLEENDIAN (1<<3) + +/* Devconnect prescalers */ + +#define CLK_44K 1 +#define CLK_22K 3 +#define CLK_11K 7 + +/* Extra xbios functions */ + +#define NSoundcmd(mode,data,data2) \ + (long)trap_14_wwl((short)130,(short)(mode),(short)(data),(long)(data2)) +#define NSetinterrupt(src_inter,cause,inth_addr) \ + (long)trap_14_wwwl((short)135,(short)(src_inter),(short)(cause), \ + (long)(inth_addr)) + +#endif /* _SDL_mintaudio_gsxb_h */ diff --git a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_it.S b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_it.S new file mode 100644 index 0000000..c751a59 --- /dev/null +++ b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_it.S @@ -0,0 +1,281 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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 +*/ + +/* + Audio interrupts + + Patrice Mandin, Didier Méquignon + */ + + .text + + .globl _SDL_MintAudio_Callback + + .globl _SDL_MintAudio_XbiosInterrupt + .globl _SDL_MintAudio_XbiosInterruptMeasureClock + .globl _SDL_MintAudio_Dma8Interrupt + .globl _SDL_MintAudio_StfaInterrupt + + .globl _SDL_MintAudio_mutex + .globl _SDL_MintAudio_audiobuf + .globl _SDL_MintAudio_numbuf + .globl _SDL_MintAudio_audiosize + .globl _SDL_MintAudio_clocktics + .globl _SDL_MintAudio_hasfpu + + .globl _SDL_MintAudio_stfa + +/* + How it works: + - Audio is playing buffer #0 (resp. #1) + - We must calculate a sample in buffer #1 (resp. #0) + so we first call the callback to do it + - Then we swap the buffers +*/ + +#define savptr 0x4a2 +#define savamt 0x46 + +/*--- Xbios interrupt vector to measure Falcon external clock ---*/ + +_SDL_MintAudio_XbiosInterruptMeasureClock: /* 1 mS */ + + btst #0,0xFFFF8901:w /* state DMA sound */ + beqs SDL_MintAudio_EndIntMeasure + addql #1,_SDL_MintAudio_clocktics +SDL_MintAudio_EndIntMeasure: + bclr #5,0xFFFFFA0F:w /* Clear service bit */ + rte + +/*--- Xbios interrupt vector ---*/ + +_SDL_MintAudio_XbiosInterrupt: + + /* Reenable interrupts, so other interrupts can work */ + movew #0x2300,sr + + /* Clear service bit, so other MFP interrupts can work */ + bclr #5,0xfffffa0f:w + + /* Check if we are not already running */ + tstw _SDL_MintAudio_mutex + bne SDL_MintAudio_XbiosEnd + notw _SDL_MintAudio_mutex + + /* Swap buffers */ + eorw #1,_SDL_MintAudio_numbuf + + moveml d0-d7/a0-a6,sp@- + + /* Save FPU if needed */ + tstw _SDL_MintAudio_hasfpu + beqs SDL_MintAudio_Xbios_nofpu1 + .chip 68060 + fsave sp@- + fmoveml fpcr/fpsr/fpiar,sp@- + fmovemx fp0-fp7,sp@- + .chip 68000 +SDL_MintAudio_Xbios_nofpu1: + + /* Callback */ + jsr _SDL_MintAudio_Callback + + /* Restore FPU if needed */ + tstw _SDL_MintAudio_hasfpu + beqs SDL_MintAudio_Xbios_nofpu2 + .chip 68060 + fmovemx sp@+,fp0-fp7 + fmoveml sp@+,fpcr/fpsr/fpiar + frestore sp@+ + .chip 68000 +SDL_MintAudio_Xbios_nofpu2: + + /* Reserve space for registers */ + subl #savamt,savptr + + /* Set new buffer */ + + moveq #0,d0 + movel _SDL_MintAudio_audiosize,d1 + + movew _SDL_MintAudio_numbuf,d0 + lsll #2,d0 + lea _SDL_MintAudio_audiobuf,a0 + movel a0@(d0:l),a1 + + lea a1@(d1:l),a2 + + movel a2,sp@- + movel a1,sp@- + clrw sp@- + movew #131,sp@- + trap #14 + lea sp@(12),sp + + /* Restore registers space */ + addl #savamt,savptr + + moveml sp@+,d0-d7/a0-a6 + + clrw _SDL_MintAudio_mutex +SDL_MintAudio_XbiosEnd: + rte + +/*--- DMA 8 bits interrupt vector ---*/ + +_SDL_MintAudio_Dma8Interrupt: + + /* Reenable interrupts, so other interrupts can work */ + movew #0x2300,sr + + /* Clear service bit, so other MFP interrupts can work */ + bclr #5,0xfffffa0f:w + + /* Check if we are not already running */ + tstw _SDL_MintAudio_mutex + bne SDL_MintAudio_Dma8End + notw _SDL_MintAudio_mutex + + /* Swap buffers */ + eorw #1,_SDL_MintAudio_numbuf + + moveml d0-d1/a0-a1,sp@- + + /* Save FPU if needed */ + tstw _SDL_MintAudio_hasfpu + beqs SDL_MintAudio_Dma8_nofpu1 + .chip 68060 + fsave sp@- + fmoveml fpcr/fpsr/fpiar,sp@- + fmovemx fp0-fp7,sp@- + .chip 68000 +SDL_MintAudio_Dma8_nofpu1: + + /* Callback */ + jsr _SDL_MintAudio_Callback + + /* Restore FPU if needed */ + tstw _SDL_MintAudio_hasfpu + beqs SDL_MintAudio_Dma8_nofpu2 + .chip 68060 + fmovemx sp@+,fp0-fp7 + fmoveml sp@+,fpcr/fpsr/fpiar + frestore sp@+ + .chip 68000 +SDL_MintAudio_Dma8_nofpu2: + + /* Set new buffer */ + + moveq #0,d0 + + movew _SDL_MintAudio_numbuf,d0 + lslw #2,d0 + lea _SDL_MintAudio_audiobuf,a0 + movel a0@(d0:w),d1 + + /* Modify DMA addresses */ + lea 0xffff8900:w,a0 + + moveb d1,a0@(0x07) /* Start address */ + rorl #8,d1 + moveb d1,a0@(0x05) + rorl #8,d1 + moveb d1,a0@(0x03) + swap d1 + + addl _SDL_MintAudio_audiosize,d1 + + moveb d1,a0@(0x13) /* End address */ + rorl #8,d1 + moveb d1,a0@(0x11) + rorl #8,d1 + moveb d1,a0@(0x0f) + + moveml sp@+,d0-d1/a0-a1 + + clrw _SDL_MintAudio_mutex +SDL_MintAudio_Dma8End: + rte + +/*--- STFA interrupt vector ---*/ + +STFA_SOUND_START = 6 +STFA_SOUND_END = STFA_SOUND_START+8 + +_SDL_MintAudio_StfaInterrupt: + + /* Reenable interrupts, so other interrupts can work */ + movew #0x2300,sr + + /* Check if we are not already running */ + tstw _SDL_MintAudio_mutex + bnes SDL_MintAudio_StfaEnd + notw _SDL_MintAudio_mutex + + /* Swap buffers */ + eorw #1,_SDL_MintAudio_numbuf + + moveml d0-d7/a0-a6,sp@- + + /* Save FPU if needed */ + tstw _SDL_MintAudio_hasfpu + beqs SDL_MintAudio_Stfa_nofpu1 + .chip 68060 + fsave sp@- + fmoveml fpcr/fpsr/fpiar,sp@- + fmovemx fp0-fp7,sp@- + .chip 68000 +SDL_MintAudio_Stfa_nofpu1: + + /* Callback */ + jsr _SDL_MintAudio_Callback + + /* Restore FPU if needed */ + tstw _SDL_MintAudio_hasfpu + beqs SDL_MintAudio_Stfa_nofpu2 + .chip 68060 + fmovemx sp@+,fp0-fp7 + fmoveml sp@+,fpcr/fpsr/fpiar + frestore sp@+ + .chip 68000 +SDL_MintAudio_Stfa_nofpu2: + + /* Set new buffer */ + + moveq #0,d0 + movel _SDL_MintAudio_stfa,a1 + + movew _SDL_MintAudio_numbuf,d0 + lslw #2,d0 + lea _SDL_MintAudio_audiobuf,a0 + movel a0@(d0:w),d1 + + /* Modify STFA replay buffers */ + movel d1,a1@(STFA_SOUND_START) + addl _SDL_MintAudio_audiosize,d1 + movel d1,a1@(STFA_SOUND_END) + + moveml sp@+,d0-d7/a0-a6 + + clrw _SDL_MintAudio_mutex +SDL_MintAudio_StfaEnd: + rte diff --git a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_mcsn.c b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_mcsn.c new file mode 100644 index 0000000..a464184 --- /dev/null +++ b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_mcsn.c @@ -0,0 +1,404 @@ +/* + 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" + +/* + MiNT audio driver + using XBIOS functions (MacSound compatible driver) + + Patrice Mandin +*/ + +#include + +/* Mint includes */ +#include +#include +#include + +#include "SDL_audio.h" +#include "../SDL_audio_c.h" +#include "../SDL_sysaudio.h" + +#include "../../video/ataricommon/SDL_atarimxalloc_c.h" + +#include "SDL_mintaudio.h" +#include "SDL_mintaudio_mcsn.h" + +/*--- Defines ---*/ + +#define MINT_AUDIO_DRIVER_NAME "mint_mcsn" + +/* Debug print info */ +#define DEBUG_NAME "audio:mcsn: " +#if 0 +#define DEBUG_PRINT(what) \ + { \ + printf what; \ + } +#else +#define DEBUG_PRINT(what) +#endif + +/*--- Static variables ---*/ + +static unsigned long cookie_snd, cookie_mch; +static cookie_mcsn_t *cookie_mcsn; + +/*--- Audio driver functions ---*/ + +static void Mint_CloseAudio(_THIS); +static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec); +static void Mint_LockAudio(_THIS); +static void Mint_UnlockAudio(_THIS); + +/* To check/init hardware audio */ +static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec); +static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec); + +/*--- Audio driver bootstrap functions ---*/ + +static int Audio_Available(void) +{ + unsigned long dummy; + const char *envr = SDL_getenv("SDL_AUDIODRIVER"); + + SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND); + + /* We can't use XBIOS in interrupt with Magic, don't know about thread */ + if (Getcookie(C_MagX, &dummy) == C_FOUND) { + return(0); + } + + /* Check if user asked a different audio driver */ + if ((envr) && (SDL_strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) { + DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n")); + return(0); + } + + /* Cookie _MCH present ? if not, assume ST machine */ + if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) { + cookie_mch = MCH_ST; + } + + /* Cookie _SND present ? if not, assume ST machine */ + if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) { + cookie_snd = SND_PSG; + } + + /* Check if we have 16 bits audio */ + if ((cookie_snd & SND_16BIT)==0) { + DEBUG_PRINT((DEBUG_NAME "no 16 bits sound\n")); + return(0); + } + + /* Cookie MCSN present ? */ + if (Getcookie(C_McSn, (long *) &cookie_mcsn) != C_FOUND) { + DEBUG_PRINT((DEBUG_NAME "no MCSN audio\n")); + return(0); + } + + /* Check if interrupt at end of replay */ + if (cookie_mcsn->pint == 0) { + DEBUG_PRINT((DEBUG_NAME "no interrupt at end of replay\n")); + return(0); + } + + /* Check if audio is lockable */ + if (Locksnd()!=1) { + DEBUG_PRINT((DEBUG_NAME "audio locked by other application\n")); + return(0); + } + + Unlocksnd(); + + DEBUG_PRINT((DEBUG_NAME "MCSN audio available!\n")); + return(1); +} + +static void Audio_DeleteDevice(SDL_AudioDevice *device) +{ + SDL_free(device->hidden); + SDL_free(device); +} + +static SDL_AudioDevice *Audio_CreateDevice(int devindex) +{ + SDL_AudioDevice *this; + + /* Initialize all variables that we clean on shutdown */ + this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice)); + if ( this ) { + SDL_memset(this, 0, (sizeof *this)); + this->hidden = (struct SDL_PrivateAudioData *) + SDL_malloc((sizeof *this->hidden)); + } + if ( (this == NULL) || (this->hidden == NULL) ) { + SDL_OutOfMemory(); + if ( this ) { + SDL_free(this); + } + return(0); + } + SDL_memset(this->hidden, 0, (sizeof *this->hidden)); + + /* Set the function pointers */ + this->OpenAudio = Mint_OpenAudio; + this->CloseAudio = Mint_CloseAudio; + this->LockAudio = Mint_LockAudio; + this->UnlockAudio = Mint_UnlockAudio; + this->free = Audio_DeleteDevice; + + return this; +} + +AudioBootStrap MINTAUDIO_MCSN_bootstrap = { + MINT_AUDIO_DRIVER_NAME, "MiNT MCSN audio driver", + Audio_Available, Audio_CreateDevice +}; + +static void Mint_LockAudio(_THIS) +{ + /* Stop replay */ + Buffoper(0); +} + +static void Mint_UnlockAudio(_THIS) +{ + /* Restart replay */ + Buffoper(SB_PLA_ENA|SB_PLA_RPT); +} + +static void Mint_CloseAudio(_THIS) +{ + /* Stop replay */ + SDL_MintAudio_WaitThread(); + Buffoper(0); + + if (!SDL_MintAudio_mint_present) { + /* Uninstall interrupt */ + Jdisint(MFP_DMASOUND); + } + + /* Wait if currently playing sound */ + while (SDL_MintAudio_mutex != 0) { + } + + /* Clear buffers */ + if (SDL_MintAudio_audiobuf[0]) { + Mfree(SDL_MintAudio_audiobuf[0]); + SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL; + } + + /* Unlock sound system */ + Unlocksnd(); +} + +static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec) +{ + int i; + unsigned long masterclock, masterprediv; + + DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff)); + DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); + DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); + DEBUG_PRINT(("channels=%d, ", spec->channels)); + DEBUG_PRINT(("freq=%d\n", spec->freq)); + + if (spec->channels > 2) { + spec->channels = 2; /* no more than stereo! */ + } + + /* Check formats available */ + MINTAUDIO_freqcount=0; + switch(cookie_mcsn->play) { + case MCSN_ST: + spec->channels=1; + spec->format=8; /* FIXME: is it signed or unsigned ? */ + SDL_MintAudio_AddFrequency(this, 12500, 0, 0, -1); + break; + case MCSN_TT: /* Also STE, Mega STE */ + spec->format=AUDIO_S8; + masterclock=MASTERCLOCK_STE; + masterprediv=MASTERPREDIV_STE; + if ((cookie_mch>>16)==MCH_TT) { + masterclock=MASTERCLOCK_TT; + masterprediv=MASTERPREDIV_TT; + } + for (i=0; i<4; i++) { + SDL_MintAudio_AddFrequency(this, masterclock/(masterprediv*(1<res1 != 0) { + for (i=1; i<4; i++) { + SDL_MintAudio_AddFrequency(this, (cookie_mcsn->res1)/(MASTERPREDIV_FALCON*(1<format |= 0x8000; /* Audio is always signed */ + if ((spec->format & 0x00ff)==16) { + spec->format |= 0x1000; /* Audio is always big endian */ + spec->channels=2; /* 16 bits always stereo */ + } + break; + } + +#if 1 + for (i=0; ifreq); + spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency; + + DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff)); + DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); + DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); + DEBUG_PRINT(("channels=%d, ", spec->channels)); + DEBUG_PRINT(("freq=%d\n", spec->freq)); + + return 0; +} + +static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec) +{ + int channels_mode, prediv, dmaclock; + void *buffer; + + /* Stop currently playing sound */ + SDL_MintAudio_quit_thread = SDL_FALSE; + SDL_MintAudio_thread_finished = SDL_TRUE; + SDL_MintAudio_WaitThread(); + Buffoper(0); + + /* Set replay tracks */ + Settracks(0,0); + Setmontracks(0); + + /* Select replay format */ + channels_mode=STEREO16; + switch (spec->format & 0xff) { + case 8: + if (spec->channels==2) { + channels_mode=STEREO8; + } else { + channels_mode=MONO8; + } + break; + } + if (Setmode(channels_mode)<0) { + DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n")); + } + + dmaclock = MINTAUDIO_frequencies[MINTAUDIO_numfreq].masterclock; + prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor; + switch(cookie_mcsn->play) { + case MCSN_TT: + Devconnect(DMAPLAY, DAC, CLK25M, CLKOLD, 1); + Soundcmd(SETPRESCALE, prediv); + DEBUG_PRINT((DEBUG_NAME "STE/TT prescaler selected\n")); + break; + case MCSN_FALCON: + Devconnect(DMAPLAY, DAC, dmaclock, prediv, 1); + DEBUG_PRINT((DEBUG_NAME "Falcon prescaler selected\n")); + break; + } + + /* Set buffer */ + buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf]; + if (Setbuffer(0, buffer, buffer + spec->size)<0) { + DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n")); + } + + if (SDL_MintAudio_mint_present) { + SDL_MintAudio_thread_pid = tfork(SDL_MintAudio_Thread, 0); + } else { + /* Install interrupt */ + Jdisint(MFP_DMASOUND); + Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt); + Jenabint(MFP_DMASOUND); + + if (Setinterrupt(SI_TIMERA, SI_PLAY)<0) { + DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n")); + } + } + + /* Go */ + Buffoper(SB_PLA_ENA|SB_PLA_RPT); + DEBUG_PRINT((DEBUG_NAME "hardware initialized\n")); +} + +static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec) +{ + /* Lock sound system */ + if (Locksnd()!=1) { + SDL_SetError("Mint_OpenAudio: Audio system already in use"); + return(-1); + } + + SDL_MintAudio_device = this; + + /* Check audio capabilities */ + if (Mint_CheckAudio(this, spec)==-1) { + return -1; + } + + SDL_CalculateAudioSpec(spec); + + /* Allocate memory for audio buffers in DMA-able RAM */ + DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size)); + + SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM); + if (SDL_MintAudio_audiobuf[0]==NULL) { + SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer"); + return (-1); + } + SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ; + SDL_MintAudio_numbuf=0; + SDL_memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2); + SDL_MintAudio_audiosize = spec->size; + SDL_MintAudio_mutex = 0; + + DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0])); + DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); + + SDL_MintAudio_CheckFpu(); + + /* Setup audio hardware */ + Mint_InitAudio(this, spec); + + return(1); /* We don't use SDL threaded audio */ +} diff --git a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_mcsn.h b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_mcsn.h new file mode 100644 index 0000000..f253ddd --- /dev/null +++ b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_mcsn.h @@ -0,0 +1,59 @@ +/* + 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" + +/* + MCSN control structure + + Patrice Mandin +*/ + +#ifndef _SDL_mintaudio_mcsh_h +#define _SDL_mintaudio_mcsh_h + +typedef struct { + unsigned short version; /* Version */ + unsigned short size; /* Size of structure */ + + unsigned short play; /* Replay capability */ + unsigned short record; /* Record capability */ + unsigned short dsp; /* DSP56K present */ + unsigned short pint; /* Interrupt at end of replay */ + unsigned short rint; /* Interrupt at end of record */ + + unsigned long res1; /* Frequency of external clock */ + unsigned long res2; + unsigned long res3; + unsigned long res4; +} cookie_mcsn_t __attribute__((packed)); + +enum { + MCSN_ST=0, + MCSN_TT, + MCSN_STE=MCSN_TT, + MCSN_FALCON, + MCSN_MAC=MCSN_FALCON +}; + +#define SETSMPFREQ 7 /* Set sample frequency */ + +#endif /* _SDL_mintaudio_mcsh_h */ diff --git a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_stfa.c b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_stfa.c new file mode 100644 index 0000000..4ad1fdd --- /dev/null +++ b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_stfa.c @@ -0,0 +1,323 @@ +/* + 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" + +/* + MiNT audio driver + using XBIOS functions (STFA driver) + + Patrice Mandin +*/ + +/* Mint includes */ +#include +#include +#include + +#include "SDL_audio.h" +#include "../SDL_audio_c.h" +#include "../SDL_sysaudio.h" + +#include "../../video/ataricommon/SDL_atarimxalloc_c.h" + +#include "SDL_mintaudio.h" +#include "SDL_mintaudio_stfa.h" + +/*--- Defines ---*/ + +#define MINT_AUDIO_DRIVER_NAME "mint_stfa" + +/* Debug print info */ +#define DEBUG_NAME "audio:stfa: " +#if 0 +#define DEBUG_PRINT(what) \ + { \ + printf what; \ + } +#else +#define DEBUG_PRINT(what) +#endif + +/*--- Static variables ---*/ + +static unsigned long cookie_snd, cookie_mch; +static cookie_stfa_t *cookie_stfa; + +static const int freqs[16]={ + 4995, 6269, 7493, 8192, + 9830, 10971, 12538, 14985, + 16384, 19819, 21943, 24576, + 30720, 32336, 43885, 49152 +}; + +/*--- Audio driver functions ---*/ + +static void Mint_CloseAudio(_THIS); +static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec); +static void Mint_LockAudio(_THIS); +static void Mint_UnlockAudio(_THIS); + +/* To check/init hardware audio */ +static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec); +static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec); + +/*--- Audio driver bootstrap functions ---*/ + +static int Audio_Available(void) +{ + const char *envr = SDL_getenv("SDL_AUDIODRIVER"); + + /* Check if user asked a different audio driver */ + if ((envr) && (SDL_strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) { + DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n")); + return(0); + } + + /* Cookie _MCH present ? if not, assume ST machine */ + if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) { + cookie_mch = MCH_ST; + } + + /* Cookie _SND present ? if not, assume ST machine */ + if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) { + cookie_snd = SND_PSG; + } + + /* Cookie STFA present ? */ + if (Getcookie(C_STFA, (long *) &cookie_stfa) != C_FOUND) { + DEBUG_PRINT((DEBUG_NAME "no STFA audio\n")); + return(0); + } + + SDL_MintAudio_stfa = cookie_stfa; + + DEBUG_PRINT((DEBUG_NAME "STFA audio available!\n")); + return(1); +} + +static void Audio_DeleteDevice(SDL_AudioDevice *device) +{ + SDL_free(device->hidden); + SDL_free(device); +} + +static SDL_AudioDevice *Audio_CreateDevice(int devindex) +{ + SDL_AudioDevice *this; + + /* Initialize all variables that we clean on shutdown */ + this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice)); + if ( this ) { + SDL_memset(this, 0, (sizeof *this)); + this->hidden = (struct SDL_PrivateAudioData *) + SDL_malloc((sizeof *this->hidden)); + } + if ( (this == NULL) || (this->hidden == NULL) ) { + SDL_OutOfMemory(); + if ( this ) { + SDL_free(this); + } + return(0); + } + SDL_memset(this->hidden, 0, (sizeof *this->hidden)); + + /* Set the function pointers */ + this->OpenAudio = Mint_OpenAudio; + this->CloseAudio = Mint_CloseAudio; + this->LockAudio = Mint_LockAudio; + this->UnlockAudio = Mint_UnlockAudio; + this->free = Audio_DeleteDevice; + + return this; +} + +AudioBootStrap MINTAUDIO_STFA_bootstrap = { + MINT_AUDIO_DRIVER_NAME, "MiNT STFA audio driver", + Audio_Available, Audio_CreateDevice +}; + +static void Mint_LockAudio(_THIS) +{ + void *oldpile; + + /* Stop replay */ + oldpile=(void *)Super(0); + cookie_stfa->sound_enable=STFA_PLAY_DISABLE; + Super(oldpile); +} + +static void Mint_UnlockAudio(_THIS) +{ + void *oldpile; + + /* Restart replay */ + oldpile=(void *)Super(0); + cookie_stfa->sound_enable=STFA_PLAY_ENABLE|STFA_PLAY_REPEAT; + Super(oldpile); +} + +static void Mint_CloseAudio(_THIS) +{ + void *oldpile; + + /* Stop replay */ + oldpile=(void *)Super(0); + cookie_stfa->sound_enable=STFA_PLAY_DISABLE; + Super(oldpile); + + /* Wait if currently playing sound */ + while (SDL_MintAudio_mutex != 0) { + } + + /* Clear buffers */ + if (SDL_MintAudio_audiobuf[0]) { + Mfree(SDL_MintAudio_audiobuf[0]); + SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL; + } +} + +static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec) +{ + int i; + + DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff)); + DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); + DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); + DEBUG_PRINT(("channels=%d, ", spec->channels)); + DEBUG_PRINT(("freq=%d\n", spec->freq)); + + if (spec->channels > 2) { + spec->channels = 2; /* no more than stereo! */ + } + + /* Check formats available */ + MINTAUDIO_freqcount=0; + for (i=0;i<16;i++) { + SDL_MintAudio_AddFrequency(this, freqs[i], 0, i, -1); + } + +#if 1 + for (i=0; ifreq); + spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency; + + DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff)); + DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); + DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); + DEBUG_PRINT(("channels=%d, ", spec->channels)); + DEBUG_PRINT(("freq=%d\n", spec->freq)); + + return 0; +} + +static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec) +{ + void *buffer; + void *oldpile; + + buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf]; + + oldpile=(void *)Super(0); + + /* Stop replay */ + cookie_stfa->sound_enable=STFA_PLAY_DISABLE; + + /* Select replay format */ + cookie_stfa->sound_control = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor; + if ((spec->format & 0xff)==8) { + cookie_stfa->sound_control |= STFA_FORMAT_8BIT; + } else { + cookie_stfa->sound_control |= STFA_FORMAT_16BIT; + } + if (spec->channels==2) { + cookie_stfa->sound_control |= STFA_FORMAT_STEREO; + } else { + cookie_stfa->sound_control |= STFA_FORMAT_MONO; + } + if ((spec->format & 0x8000)!=0) { + cookie_stfa->sound_control |= STFA_FORMAT_SIGNED; + } else { + cookie_stfa->sound_control |= STFA_FORMAT_UNSIGNED; + } + if ((spec->format & 0x1000)!=0) { + cookie_stfa->sound_control |= STFA_FORMAT_BIGENDIAN; + } else { + cookie_stfa->sound_control |= STFA_FORMAT_LITENDIAN; + } + + /* Set buffer */ + cookie_stfa->sound_start = (unsigned long) buffer; + cookie_stfa->sound_end = (unsigned long) (buffer + spec->size); + + /* Set interrupt */ + cookie_stfa->stfa_it = SDL_MintAudio_StfaInterrupt; + + /* Restart replay */ + cookie_stfa->sound_enable=STFA_PLAY_ENABLE|STFA_PLAY_REPEAT; + + Super(oldpile); + + DEBUG_PRINT((DEBUG_NAME "hardware initialized\n")); +} + +static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec) +{ + SDL_MintAudio_device = this; + + /* Check audio capabilities */ + if (Mint_CheckAudio(this, spec)==-1) { + return -1; + } + + SDL_CalculateAudioSpec(spec); + + /* Allocate memory for audio buffers in DMA-able RAM */ + DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size)); + + SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM); + if (SDL_MintAudio_audiobuf[0]==NULL) { + SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer"); + return (-1); + } + SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ; + SDL_MintAudio_numbuf=0; + SDL_memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2); + SDL_MintAudio_audiosize = spec->size; + SDL_MintAudio_mutex = 0; + + DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0])); + DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); + + SDL_MintAudio_CheckFpu(); + + /* Setup audio hardware */ + Mint_InitAudio(this, spec); + + return(1); /* We don't use threaded audio */ +} diff --git a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_stfa.h b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_stfa.h new file mode 100644 index 0000000..d4bf2d6 --- /dev/null +++ b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_stfa.h @@ -0,0 +1,100 @@ +/* + 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" + +/* + STFA control structure + + Patrice Mandin +*/ + +#ifndef _SDL_mintaudio_stfa_h +#define _SDL_mintaudio_stfa_h + +/*--- Defines ---*/ + +#define C_STFA 0x53544641L /* Sound treiber für atari (seb/The removers) */ + +#define STFA_PLAY_ENABLE (1<<0) +#define STFA_PLAY_DISABLE (0<<0) +#define STFA_PLAY_REPEAT (1<<1) +#define STFA_PLAY_SINGLE (0<<1) + +#define STFA_FORMAT_SIGNED (1<<15) +#define STFA_FORMAT_UNSIGNED (0<<15) +#define STFA_FORMAT_STEREO (1<<14) +#define STFA_FORMAT_MONO (0<<14) +#define STFA_FORMAT_16BIT (1<<13) +#define STFA_FORMAT_8BIT (0<<13) +#define STFA_FORMAT_LITENDIAN (1<<9) +#define STFA_FORMAT_BIGENDIAN (0<<9) +#define STFA_FORMAT_FREQ_MASK 0x0f +enum { + STFA_FORMAT_F4995=0, + STFA_FORMAT_F6269, + STFA_FORMAT_F7493, + STFA_FORMAT_F8192, + + STFA_FORMAT_F9830, + STFA_FORMAT_F10971, + STFA_FORMAT_F12538, + STFA_FORMAT_F14985, + + STFA_FORMAT_F16384, + STFA_FORMAT_F19819, + STFA_FORMAT_F21943, + STFA_FORMAT_F24576, + + STFA_FORMAT_F30720, + STFA_FORMAT_F32336, + STFA_FORMAT_F43885, + STFA_FORMAT_F49152 +}; + +/*--- Types ---*/ + +typedef struct { + unsigned short sound_enable; + unsigned short sound_control; + unsigned short sound_output; + unsigned long sound_start; + unsigned long sound_current; + unsigned long sound_end; + unsigned short version; + void *old_vbl; + void *old_timera; + unsigned long old_mfp_status; + void *new_vbl; + void *drivers_list; + void *play_stop; + unsigned short frequency; + void *set_frequency; + + unsigned short frequency_threshold; + unsigned short *custom_freq_table; + unsigned short stfa_on_off; + void *new_drivers_list; + unsigned long old_bit_2_of_cookie_snd; + void (*stfa_it)(void); +} cookie_stfa_t __attribute__((packed)); + +#endif /* _SDL_mintaudio_stfa_h */ diff --git a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_xbios.c b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_xbios.c new file mode 100644 index 0000000..4a1af3f --- /dev/null +++ b/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_xbios.c @@ -0,0 +1,495 @@ +/* + 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" + +/* + MiNT audio driver + using XBIOS functions (Falcon) + + Patrice Mandin, Didier Méquignon +*/ + +#include +#include + +/* Mint includes */ +#include +#include +#include + +#include "SDL_audio.h" +#include "../SDL_audio_c.h" +#include "../SDL_sysaudio.h" + +#include "../../video/ataricommon/SDL_atarimxalloc_c.h" + +#include "SDL_mintaudio.h" +#include "SDL_mintaudio_dma8.h" + +/*--- Defines ---*/ + +#define MINT_AUDIO_DRIVER_NAME "mint_xbios" + +/* Debug print info */ +#define DEBUG_NAME "audio:xbios: " +#if 0 +#define DEBUG_PRINT(what) \ + { \ + printf what; \ + } +#else +#define DEBUG_PRINT(what) +#endif + +/*--- Static variables ---*/ + +static unsigned long cookie_snd; + +/*--- Audio driver functions ---*/ + +static void Mint_CloseAudio(_THIS); +static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec); +static void Mint_LockAudio(_THIS); +static void Mint_UnlockAudio(_THIS); + +/* To check/init hardware audio */ +static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec); +static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec); + +/*--- Audio driver bootstrap functions ---*/ + +static int Audio_Available(void) +{ + unsigned long dummy; + const char *envr = SDL_getenv("SDL_AUDIODRIVER"); + + /*SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND);*/ + SDL_MintAudio_mint_present = SDL_FALSE; + + /* We can't use XBIOS in interrupt with Magic, don't know about thread */ + if (Getcookie(C_MagX, &dummy) == C_FOUND) { + return(0); + } + + /* Check if user asked a different audio driver */ + if ((envr) && (SDL_strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) { + DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n")); + return(0); + } + + /* Cookie _SND present ? if not, assume ST machine */ + if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) { + cookie_snd = SND_PSG; + } + + /* Check if we have 16 bits audio */ + if ((cookie_snd & SND_16BIT)==0) { + DEBUG_PRINT((DEBUG_NAME "no 16 bits sound\n")); + return(0); + } + + /* Check if audio is lockable */ + if (Locksnd()!=1) { + DEBUG_PRINT((DEBUG_NAME "audio locked by other application\n")); + return(0); + } + + Unlocksnd(); + + DEBUG_PRINT((DEBUG_NAME "XBIOS audio available!\n")); + return(1); +} + +static void Audio_DeleteDevice(SDL_AudioDevice *device) +{ + SDL_free(device->hidden); + SDL_free(device); +} + +static SDL_AudioDevice *Audio_CreateDevice(int devindex) +{ + SDL_AudioDevice *this; + + /* Initialize all variables that we clean on shutdown */ + this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice)); + if ( this ) { + SDL_memset(this, 0, (sizeof *this)); + this->hidden = (struct SDL_PrivateAudioData *) + SDL_malloc((sizeof *this->hidden)); + } + if ( (this == NULL) || (this->hidden == NULL) ) { + SDL_OutOfMemory(); + if ( this ) { + SDL_free(this); + } + return(0); + } + SDL_memset(this->hidden, 0, (sizeof *this->hidden)); + + /* Set the function pointers */ + this->OpenAudio = Mint_OpenAudio; + this->CloseAudio = Mint_CloseAudio; + this->LockAudio = Mint_LockAudio; + this->UnlockAudio = Mint_UnlockAudio; + this->free = Audio_DeleteDevice; + + return this; +} + +AudioBootStrap MINTAUDIO_XBIOS_bootstrap = { + MINT_AUDIO_DRIVER_NAME, "MiNT XBIOS audio driver", + Audio_Available, Audio_CreateDevice +}; + +static void Mint_LockAudio(_THIS) +{ + /* Stop replay */ + Buffoper(0); +} + +static void Mint_UnlockAudio(_THIS) +{ + /* Restart replay */ + Buffoper(SB_PLA_ENA|SB_PLA_RPT); +} + +static void Mint_CloseAudio(_THIS) +{ + /* Stop replay */ + SDL_MintAudio_WaitThread(); + Buffoper(0); + + if (!SDL_MintAudio_mint_present) { + /* Uninstall interrupt */ + Jdisint(MFP_DMASOUND); + } + + /* Wait if currently playing sound */ + while (SDL_MintAudio_mutex != 0) { + } + + /* Clear buffers */ + if (SDL_MintAudio_audiobuf[0]) { + Mfree(SDL_MintAudio_audiobuf[0]); + SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL; + } + + /* Unlock sound system */ + Unlocksnd(); +} + +/* Falcon XBIOS implementation of Devconnect() is buggy with external clock */ +static void Devconnect2(int src, int dst, int sclk, int pre) +{ + static const unsigned short MASK1[3] = { 0, 0x6000, 0 }; + static const unsigned short MASK2[4] = { 0xFFF0, 0xFF8F, 0xF0FF, 0x0FFF }; + static const unsigned short INDEX1[4] = { 1, 3, 5, 7 }; + static const unsigned short INDEX2[4] = { 0, 2, 4, 6 }; + unsigned short sync_div,dev_ctrl,dest_ctrl; + void *oldstack; + + if (dst==0) { + return; + } + + oldstack=(void *)Super(0); + + dev_ctrl = DMAAUDIO_IO.dev_ctrl; + dest_ctrl = DMAAUDIO_IO.dest_ctrl; + dev_ctrl &= MASK2[src]; + + if (src==ADC) { + dev_ctrl |= MASK1[sclk]; + } else { + dev_ctrl |= (INDEX1[sclk] << (src<<4)); + } + + if (dst & DMAREC) { + dest_ctrl &= 0xFFF0; + dest_ctrl |= INDEX1[src]; + } + + if (dst & DSPRECV) { + dest_ctrl &= 0xFF8F; + dest_ctrl |= (INDEX1[src]<<4); + } + + if (dst & EXTOUT) { + dest_ctrl &= 0xF0FF; + dest_ctrl |= (INDEX1[src]<<8); + } + + if (dst & DAC) { + dev_ctrl &= 0x0FFF; + dev_ctrl |= MASK1[sclk]; + dest_ctrl &= 0x0FFF; + dest_ctrl |= (INDEX2[src]<<12); + } + + sync_div = DMAAUDIO_IO.sync_div; + if (sclk==CLKEXT) { + pre<<=8; + sync_div &= 0xF0FF; + } else { + sync_div &= 0xFFF0; + } + sync_div |= pre; + + DMAAUDIO_IO.dev_ctrl = dev_ctrl; + DMAAUDIO_IO.dest_ctrl = dest_ctrl; + DMAAUDIO_IO.sync_div = sync_div; + + Super(oldstack); +} + +static void Mint_CheckExternalClock(_THIS) +{ +#define SIZE_BUF_CLOCK_MEASURE (44100/10) + + unsigned long cookie_snd; + char *buffer; + int i, j; + + /* DSP present with its GPIO port ? */ + if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) { + return; + } + if ((cookie_snd & SND_DSP)==0) { + return; + } + + buffer = Atari_SysMalloc(SIZE_BUF_CLOCK_MEASURE, MX_STRAM); + if (buffer==NULL) { + DEBUG_PRINT((DEBUG_NAME "Not enough memory for the measure\n")); + return; + } + SDL_memset(buffer, 0, SIZE_BUF_CLOCK_MEASURE); + + Buffoper(0); + Settracks(0,0); + Setmontracks(0); + Setmode(MONO8); + Jdisint(MFP_TIMERA); + + for (i=0; i<2; i++) { + Gpio(GPIO_SET,7); /* DSP port gpio outputs */ + Gpio(GPIO_WRITE,2+i); /* 22.5792/24.576 MHz for 44.1/48KHz */ + Devconnect2(DMAPLAY, DAC, CLKEXT, CLK50K); /* Matrix and clock source */ + Setbuffer(0, buffer, buffer + SIZE_BUF_CLOCK_MEASURE); /* Set buffer */ + Xbtimer(XB_TIMERA, 5, 38, SDL_MintAudio_XbiosInterruptMeasureClock); /* delay mode timer A, prediv /64, 1KHz */ + Jenabint(MFP_TIMERA); + SDL_MintAudio_clocktics = 0; + Buffoper(SB_PLA_ENA); + usleep(110000); + + if((Buffoper(-1) & 1)==0) { + if (SDL_MintAudio_clocktics) { + unsigned long khz; + + khz = ((SIZE_BUF_CLOCK_MEASURE/SDL_MintAudio_clocktics) +1) & 0xFFFFFFFE; + DEBUG_PRINT((DEBUG_NAME "measure %d: freq=%lu KHz\n", i+1, khz)); + + if(khz==44) { + for (j=1; j<4; j++) { + SDL_MintAudio_AddFrequency(this, MASTERCLOCK_44K/(MASTERPREDIV_FALCON*(1<format & 0x00ff)); + DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); + DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); + DEBUG_PRINT(("channels=%d, ", spec->channels)); + DEBUG_PRINT(("freq=%d\n", spec->freq)); + + if (spec->channels > 2) { + spec->channels = 2; /* no more than stereo! */ + } + + spec->format |= 0x8000; /* Audio is always signed */ + if ((spec->format & 0x00ff)==16) { + spec->format |= 0x1000; /* Audio is always big endian */ + spec->channels=2; /* 16 bits always stereo */ + } + + MINTAUDIO_freqcount=0; + + /* Add external clocks if present */ + Mint_CheckExternalClock(this); + + /* Standard clocks */ + for (i=1;i<12;i++) { + /* Remove unusable Falcon codec predivisors */ + if ((i==6) || (i==8) || (i==10)) { + continue; + } + SDL_MintAudio_AddFrequency(this, MASTERCLOCK_FALCON1/(MASTERPREDIV_FALCON*(i+1)), MASTERCLOCK_FALCON1, i, -1); + } + +#if 1 + for (i=0; ifreq); + spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency; + + DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff)); + DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); + DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); + DEBUG_PRINT(("channels=%d, ", spec->channels)); + DEBUG_PRINT(("freq=%d\n", spec->freq)); + + return 0; +} + +static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec) +{ + int channels_mode, dmaclock, prediv; + void *buffer; + + /* Stop currently playing sound */ + SDL_MintAudio_quit_thread = SDL_FALSE; + SDL_MintAudio_thread_finished = SDL_TRUE; + SDL_MintAudio_WaitThread(); + Buffoper(0); + + /* Set replay tracks */ + Settracks(0,0); + Setmontracks(0); + + /* Select replay format */ + channels_mode=STEREO16; + switch (spec->format & 0xff) { + case 8: + if (spec->channels==2) { + channels_mode=STEREO8; + } else { + channels_mode=MONO8; + } + break; + } + if (Setmode(channels_mode)<0) { + DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n")); + } + + dmaclock = MINTAUDIO_frequencies[MINTAUDIO_numfreq].masterclock; + prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor; + if (MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits != -1) { + Gpio(GPIO_SET,7); /* DSP port gpio outputs */ + Gpio(GPIO_WRITE, MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits); + Devconnect2(DMAPLAY, DAC|EXTOUT, CLKEXT, prediv); + } else { + Devconnect2(DMAPLAY, DAC, CLK25M, prediv); + } + + /* Set buffer */ + buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf]; + if (Setbuffer(0, buffer, buffer + spec->size)<0) { + DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n")); + } + + if (SDL_MintAudio_mint_present) { + SDL_MintAudio_thread_pid = tfork(SDL_MintAudio_Thread, 0); + } else { + /* Install interrupt */ + Jdisint(MFP_DMASOUND); + /*Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt);*/ + Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_Dma8Interrupt); + Jenabint(MFP_DMASOUND); + + if (Setinterrupt(SI_TIMERA, SI_PLAY)<0) { + DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n")); + } + } + + /* Go */ + Buffoper(SB_PLA_ENA|SB_PLA_RPT); + DEBUG_PRINT((DEBUG_NAME "hardware initialized\n")); +} + +static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec) +{ + /* Lock sound system */ + if (Locksnd()!=1) { + SDL_SetError("Mint_OpenAudio: Audio system already in use"); + return(-1); + } + + SDL_MintAudio_device = this; + + /* Check audio capabilities */ + if (Mint_CheckAudio(this, spec)==-1) { + return -1; + } + + SDL_CalculateAudioSpec(spec); + + /* Allocate memory for audio buffers in DMA-able RAM */ + DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size)); + + SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM); + if (SDL_MintAudio_audiobuf[0]==NULL) { + SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer"); + return (-1); + } + SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ; + SDL_MintAudio_numbuf=0; + SDL_memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2); + SDL_MintAudio_audiosize = spec->size; + SDL_MintAudio_mutex = 0; + + DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0])); + DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); + + SDL_MintAudio_CheckFpu(); + + /* Setup audio hardware */ + Mint_InitAudio(this, spec); + + return(1); /* We don't use SDL threaded audio */ +} -- cgit v1.1