19682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* 29682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL - Simple DirectMedia Layer 39682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Copyright (C) 1997-2012 Sam Lantinga 49682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 59682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This library is free software; you can redistribute it and/or 69682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall modify it under the terms of the GNU Library General Public 79682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall License as published by the Free Software Foundation; either 89682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall version 2 of the License, or (at your option) any later version. 99682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This library is distributed in the hope that it will be useful, 119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall but WITHOUT ANY WARRANTY; without even the implied warranty of 129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Library General Public License for more details. 149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall You should have received a copy of the GNU Library General Public 169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall License along with this library; if not, write to the Free 179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Sam Lantinga 209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall slouken@libsdl.org 219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall*/ 229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_config.h" 239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* 259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall MiNT audio driver 269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall using XBIOS functions (STFA driver) 279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Patrice Mandin 299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall*/ 309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Mint includes */ 329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include <mint/osbind.h> 339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include <mint/falcon.h> 349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include <mint/cookie.h> 359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_audio.h" 379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "../SDL_audio_c.h" 389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "../SDL_sysaudio.h" 399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "../../video/ataricommon/SDL_atarimxalloc_c.h" 419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "../../video/ataricommon/SDL_atarisuper.h" 429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_mintaudio.h" 449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_mintaudio_stfa.h" 459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/*--- Defines ---*/ 479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define MINT_AUDIO_DRIVER_NAME "mint_stfa" 499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Debug print info */ 519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define DEBUG_NAME "audio:stfa: " 529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if 0 539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define DEBUG_PRINT(what) \ 549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall { \ 559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall printf what; \ 569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#else 589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define DEBUG_PRINT(what) 599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/*--- Static variables ---*/ 629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic long cookie_snd, cookie_mch; 649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic cookie_stfa_t *cookie_stfa; 659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic const int freqs[16]={ 679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 4995, 6269, 7493, 8192, 689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 9830, 10971, 12538, 14985, 699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 16384, 19819, 21943, 24576, 709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 30720, 32336, 43885, 49152 719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall}; 729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/*--- Audio driver functions ---*/ 749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic void Mint_CloseAudio(_THIS); 769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec); 779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic void Mint_LockAudio(_THIS); 789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic void Mint_UnlockAudio(_THIS); 799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* To check/init hardware audio */ 819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec); 829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic void Mint_InitAudio(_THIS, SDL_AudioSpec *spec); 839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/*--- Audio driver bootstrap functions ---*/ 859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic int Audio_Available(void) 879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall long dummy; 899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall const char *envr = SDL_getenv("SDL_AUDIODRIVER"); 909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Check if user asked a different audio driver */ 929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ((envr) && (SDL_strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) { 939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n")); 949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(0); 959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Cookie _MCH present ? if not, assume ST machine */ 989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) { 999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_mch = MCH_ST; 1009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Cookie _SND present ? if not, assume ST machine */ 1039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) { 1049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_snd = SND_PSG; 1059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Cookie STFA present ? */ 1089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (Getcookie(C_STFA, &dummy) != C_FOUND) { 1099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT((DEBUG_NAME "no STFA audio\n")); 1109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(0); 1119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa = (cookie_stfa_t *) dummy; 1139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_MintAudio_stfa = cookie_stfa; 1159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT((DEBUG_NAME "STFA audio available!\n")); 1179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(1); 1189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic void Audio_DeleteDevice(SDL_AudioDevice *device) 1219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_free(device->hidden); 1239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_free(device); 1249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic SDL_AudioDevice *Audio_CreateDevice(int devindex) 1279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_AudioDevice *this; 1299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Initialize all variables that we clean on shutdown */ 1319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice)); 1329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( this ) { 1339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_memset(this, 0, (sizeof *this)); 1349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->hidden = (struct SDL_PrivateAudioData *) 1359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_malloc((sizeof *this->hidden)); 1369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( (this == NULL) || (this->hidden == NULL) ) { 1389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_OutOfMemory(); 1399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ( this ) { 1409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_free(this); 1419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(0); 1439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_memset(this->hidden, 0, (sizeof *this->hidden)); 1459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Set the function pointers */ 1479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->OpenAudio = Mint_OpenAudio; 1489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->CloseAudio = Mint_CloseAudio; 1499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->LockAudio = Mint_LockAudio; 1509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->UnlockAudio = Mint_UnlockAudio; 1519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall this->free = Audio_DeleteDevice; 1529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return this; 1549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse HallAudioBootStrap MINTAUDIO_STFA_bootstrap = { 1579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall MINT_AUDIO_DRIVER_NAME, "MiNT STFA audio driver", 1589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Audio_Available, Audio_CreateDevice 1599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall}; 1609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic void Mint_LockAudio(_THIS) 1629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall void *oldpile; 1649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Stop replay */ 1669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall oldpile=(void *)Super(0); 1679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_enable=STFA_PLAY_DISABLE; 1689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SuperToUser(oldpile); 1699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic void Mint_UnlockAudio(_THIS) 1729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall void *oldpile; 1749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Restart replay */ 1769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall oldpile=(void *)Super(0); 1779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_enable=STFA_PLAY_ENABLE|STFA_PLAY_REPEAT; 1789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SuperToUser(oldpile); 1799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic void Mint_CloseAudio(_THIS) 1829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 1839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall void *oldpile; 1849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Stop replay */ 1869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall oldpile=(void *)Super(0); 1879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_enable=STFA_PLAY_DISABLE; 1889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SuperToUser(oldpile); 1899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Wait if currently playing sound */ 1919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall while (SDL_MintAudio_mutex != 0) { 1929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Clear buffers */ 1959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (SDL_MintAudio_audiobuf[0]) { 1969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Mfree(SDL_MintAudio_audiobuf[0]); 1979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL; 1989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 1999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 2009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec) 2029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 2039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int i; 2049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff)); 2069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); 2079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); 2089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT(("channels=%d, ", spec->channels)); 2099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT(("freq=%d\n", spec->freq)); 2109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (spec->channels > 2) { 2129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall spec->channels = 2; /* no more than stereo! */ 2139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Check formats available */ 2169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall MINTAUDIO_freqcount=0; 2179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall for (i=0;i<16;i++) { 2189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_MintAudio_AddFrequency(this, freqs[i], 0, i, -1); 2199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#if 1 2229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall for (i=0; i<MINTAUDIO_freqcount; i++) { 2239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n", 2249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall i, MINTAUDIO_frequencies[i].frequency, MINTAUDIO_frequencies[i].masterclock, 2259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall MINTAUDIO_frequencies[i].predivisor 2269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall )); 2279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 2299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall MINTAUDIO_numfreq=SDL_MintAudio_SearchFrequency(this, spec->freq); 2319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency; 2329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff)); 2349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0))); 2359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0))); 2369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT(("channels=%d, ", spec->channels)); 2379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT(("freq=%d\n", spec->freq)); 2389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return 0; 2409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 2419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic void Mint_InitAudio(_THIS, SDL_AudioSpec *spec) 2439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 2449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall void *buffer; 2459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall void *oldpile; 2469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf]; 2489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall oldpile=(void *)Super(0); 2509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Stop replay */ 2529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_enable=STFA_PLAY_DISABLE; 2539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Select replay format */ 2559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_control = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor; 2569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ((spec->format & 0xff)==8) { 2579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_control |= STFA_FORMAT_8BIT; 2589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } else { 2599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_control |= STFA_FORMAT_16BIT; 2609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (spec->channels==2) { 2629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_control |= STFA_FORMAT_STEREO; 2639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } else { 2649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_control |= STFA_FORMAT_MONO; 2659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ((spec->format & 0x8000)!=0) { 2679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_control |= STFA_FORMAT_SIGNED; 2689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } else { 2699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_control |= STFA_FORMAT_UNSIGNED; 2709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if ((spec->format & 0x1000)!=0) { 2729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_control |= STFA_FORMAT_BIGENDIAN; 2739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } else { 2749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_control |= STFA_FORMAT_LITENDIAN; 2759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 2769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Set buffer */ 2789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_start = (unsigned long) buffer; 2799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_end = (unsigned long) (buffer + spec->size); 2809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Set interrupt */ 2829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->stfa_it = SDL_MintAudio_StfaInterrupt; 2839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Restart replay */ 2859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall cookie_stfa->sound_enable=STFA_PLAY_ENABLE|STFA_PLAY_REPEAT; 2869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SuperToUser(oldpile); 2889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT((DEBUG_NAME "hardware initialized\n")); 2909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 2919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallstatic int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec) 2939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall{ 2949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_MintAudio_device = this; 2959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Check audio capabilities */ 2979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (Mint_CheckAudio(this, spec)==-1) { 2989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return -1; 2999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_CalculateAudioSpec(spec); 3029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Allocate memory for audio buffers in DMA-able RAM */ 3049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size)); 3059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM); 3079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall if (SDL_MintAudio_audiobuf[0]==NULL) { 3089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer"); 3099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return (-1); 3109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall } 3119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ; 3129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_MintAudio_numbuf=0; 3139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2); 3149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_MintAudio_audiosize = spec->size; 3159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_MintAudio_mutex = 0; 3169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0])); 3189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1])); 3199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_MintAudio_CheckFpu(); 3219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /* Setup audio hardware */ 3239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Mint_InitAudio(this, spec); 3249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 3259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall return(1); /* We don't use threaded audio */ 3269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 327