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Diffstat (limited to 'apps/plugins/sdl/src/audio/mint/SDL_mintaudio_stfa.c')
-rw-r--r--apps/plugins/sdl/src/audio/mint/SDL_mintaudio_stfa.c326
1 files changed, 0 insertions, 326 deletions
diff --git a/apps/plugins/sdl/src/audio/mint/SDL_mintaudio_stfa.c b/apps/plugins/sdl/src/audio/mint/SDL_mintaudio_stfa.c
deleted file mode 100644
index 4a581e0351..0000000000
--- a/apps/plugins/sdl/src/audio/mint/SDL_mintaudio_stfa.c
+++ /dev/null
@@ -1,326 +0,0 @@
-/*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997-2012 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 <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 "../../video/ataricommon/SDL_atarisuper.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 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)
-{
- long dummy;
- 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, &dummy) != C_FOUND) {
- DEBUG_PRINT((DEBUG_NAME "no STFA audio\n"));
- return(0);
- }
- cookie_stfa = (cookie_stfa_t *) dummy;
-
- 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;
- SuperToUser(oldpile);
-}
-
-static void Mint_UnlockAudio(_THIS)
-{
- void *oldpile;
-
- /* Restart replay */
- oldpile=(void *)Super(0);
- cookie_stfa->sound_enable=STFA_PLAY_ENABLE|STFA_PLAY_REPEAT;
- SuperToUser(oldpile);
-}
-
-static void Mint_CloseAudio(_THIS)
-{
- void *oldpile;
-
- /* Stop replay */
- oldpile=(void *)Super(0);
- cookie_stfa->sound_enable=STFA_PLAY_DISABLE;
- SuperToUser(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; 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)
-{
- 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;
-
- SuperToUser(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 */
-}