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Diffstat (limited to 'distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_xbios.c')
-rw-r--r--distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_xbios.c495
1 files changed, 0 insertions, 495 deletions
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
deleted file mode 100644
index 4a1af3f..0000000
--- a/distrib/sdl-1.2.12/src/audio/mint/SDL_mintaudio_xbios.c
+++ /dev/null
@@ -1,495 +0,0 @@
-/*
- 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 <unistd.h>
-#include <support.h>
-
-/* Mint includes */
-#include <mint/osbind.h>
-#include <mint/falcon.h>
-#include <mint/cookie.h>
-
-#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<<j)), MASTERCLOCK_44K, (1<<j)-1, 2+i);
- }
- } else if (khz==48) {
- for (j=1; j<4; j++) {
- SDL_MintAudio_AddFrequency(this, MASTERCLOCK_48K/(MASTERPREDIV_FALCON*(1<<j)), MASTERCLOCK_48K, (1<<j)-1, 2+i);
- }
- }
- } else {
- DEBUG_PRINT((DEBUG_NAME "No measure\n"));
- }
- } else {
- DEBUG_PRINT((DEBUG_NAME "No SDMA clock\n"));
- }
-
- Buffoper(0); /* stop */
- Jdisint(MFP_TIMERA); /* Uninstall interrupt */
- }
-
- Mfree(buffer);
-}
-
-static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec)
-{
- int i;
- Uint32 extclock;
-
- 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! */
- }
-
- 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; i<MINTAUDIO_freqcount; i++) {
- DEBUG_PRINT((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n",
- i, MINTAUDIO_frequencies[i].frequency, MINTAUDIO_frequencies[i].masterclock,
- MINTAUDIO_frequencies[i].predivisor
- ));
- }
-#endif
-
- MINTAUDIO_numfreq=SDL_MintAudio_SearchFrequency(this, spec->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, 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 */
-}
generated by cgit v1.1 at 2024-04-27 22:15:32 +0000