diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/audio/dmedia/SDL_irixaudio.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/audio/dmedia/SDL_irixaudio.c | 242 |
1 files changed, 0 insertions, 242 deletions
diff --git a/distrib/sdl-1.2.12/src/audio/dmedia/SDL_irixaudio.c b/distrib/sdl-1.2.12/src/audio/dmedia/SDL_irixaudio.c deleted file mode 100644 index f9bd310..0000000 --- a/distrib/sdl-1.2.12/src/audio/dmedia/SDL_irixaudio.c +++ /dev/null @@ -1,242 +0,0 @@ -/* - 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" - -/* Allow access to a raw mixing buffer (For IRIX 6.5 and higher) */ -/* patch for IRIX 5 by Georg Schwarz 18/07/2004 */ - -#include "SDL_timer.h" -#include "SDL_audio.h" -#include "../SDL_audiomem.h" -#include "../SDL_audio_c.h" -#include "SDL_irixaudio.h" - - -#ifndef AL_RESOURCE /* as a test whether we use the old IRIX audio libraries */ -#define OLD_IRIX_AUDIO -#define alClosePort(x) ALcloseport(x) -#define alFreeConfig(x) ALfreeconfig(x) -#define alGetFillable(x) ALgetfillable(x) -#define alNewConfig() ALnewconfig() -#define alOpenPort(x,y,z) ALopenport(x,y,z) -#define alSetChannels(x,y) ALsetchannels(x,y) -#define alSetQueueSize(x,y) ALsetqueuesize(x,y) -#define alSetSampFmt(x,y) ALsetsampfmt(x,y) -#define alSetWidth(x,y) ALsetwidth(x,y) -#endif - -/* Audio driver functions */ -static int AL_OpenAudio(_THIS, SDL_AudioSpec *spec); -static void AL_WaitAudio(_THIS); -static void AL_PlayAudio(_THIS); -static Uint8 *AL_GetAudioBuf(_THIS); -static void AL_CloseAudio(_THIS); - -/* Audio driver bootstrap functions */ - -static int Audio_Available(void) -{ - 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 = AL_OpenAudio; - this->WaitAudio = AL_WaitAudio; - this->PlayAudio = AL_PlayAudio; - this->GetAudioBuf = AL_GetAudioBuf; - this->CloseAudio = AL_CloseAudio; - - this->free = Audio_DeleteDevice; - - return this; -} - -AudioBootStrap DMEDIA_bootstrap = { - "AL", "IRIX DMedia audio", - Audio_Available, Audio_CreateDevice -}; - - -void static AL_WaitAudio(_THIS) -{ - Sint32 timeleft; - - timeleft = this->spec.samples - alGetFillable(audio_port); - if ( timeleft > 0 ) { - timeleft /= (this->spec.freq/1000); - SDL_Delay((Uint32)timeleft); - } -} - -static void AL_PlayAudio(_THIS) -{ - /* Write the audio data out */ - if ( alWriteFrames(audio_port, mixbuf, this->spec.samples) < 0 ) { - /* Assume fatal error, for now */ - this->enabled = 0; - } -} - -static Uint8 *AL_GetAudioBuf(_THIS) -{ - return(mixbuf); -} - -static void AL_CloseAudio(_THIS) -{ - if ( mixbuf != NULL ) { - SDL_FreeAudioMem(mixbuf); - mixbuf = NULL; - } - if ( audio_port != NULL ) { - alClosePort(audio_port); - audio_port = NULL; - } -} - -static int AL_OpenAudio(_THIS, SDL_AudioSpec * spec) -{ - Uint16 test_format = SDL_FirstAudioFormat(spec->format); - long width = 0; - long fmt = 0; - int valid = 0; - -#ifdef OLD_IRIX_AUDIO - { - long audio_param[2]; - audio_param[0] = AL_OUTPUT_RATE; - audio_param[1] = spec->freq; - valid = (ALsetparams(AL_DEFAULT_DEVICE, audio_param, 2) < 0); - } -#else - { - ALpv audio_param; - audio_param.param = AL_RATE; - audio_param.value.i = spec->freq; - valid = (alSetParams(AL_DEFAULT_OUTPUT, &audio_param, 1) < 0); - } -#endif - - while ((!valid) && (test_format)) { - valid = 1; - spec->format = test_format; - - switch (test_format) { - case AUDIO_S8: - width = AL_SAMPLE_8; - fmt = AL_SAMPFMT_TWOSCOMP; - break; - - case AUDIO_S16SYS: - width = AL_SAMPLE_16; - fmt = AL_SAMPFMT_TWOSCOMP; - break; - - default: - valid = 0; - test_format = SDL_NextAudioFormat(); - break; - } - - if (valid) { - ALconfig audio_config = alNewConfig(); - valid = 0; - if (audio_config) { - if (alSetChannels(audio_config, spec->channels) < 0) { - if (spec->channels > 2) { /* can't handle > stereo? */ - spec->channels = 2; /* try again below. */ - } - } - - if ((alSetSampFmt(audio_config, fmt) >= 0) && - ((!width) || (alSetWidth(audio_config, width) >= 0)) && - (alSetQueueSize(audio_config, spec->samples * 2) >= 0) && - (alSetChannels(audio_config, spec->channels) >= 0)) { - - audio_port = alOpenPort("SDL audio", "w", audio_config); - if (audio_port == NULL) { - /* docs say AL_BAD_CHANNELS happens here, too. */ - int err = oserror(); - if (err == AL_BAD_CHANNELS) { - spec->channels = 2; - alSetChannels(audio_config, spec->channels); - audio_port = alOpenPort("SDL audio", "w", - audio_config); - } - } - - if (audio_port != NULL) { - valid = 1; - } - } - - alFreeConfig(audio_config); - } - } - } - - if (!valid) { - SDL_SetError("Unsupported audio format"); - return (-1); - } - - /* Update the fragment size as size in bytes */ - SDL_CalculateAudioSpec(spec); - - /* Allocate mixing buffer */ - mixbuf = (Uint8 *) SDL_AllocAudioMem(spec->size); - if (mixbuf == NULL) { - SDL_OutOfMemory(); - return (-1); - } - SDL_memset(mixbuf, spec->silence, spec->size); - - /* We're ready to rock and roll. :-) */ - return (0); -} - |