diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/audio/disk/SDL_diskaudio.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/audio/disk/SDL_diskaudio.c | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/distrib/sdl-1.2.12/src/audio/disk/SDL_diskaudio.c b/distrib/sdl-1.2.12/src/audio/disk/SDL_diskaudio.c deleted file mode 100644 index d896d9d..0000000 --- a/distrib/sdl-1.2.12/src/audio/disk/SDL_diskaudio.c +++ /dev/null @@ -1,186 +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 - - This file written by Ryan C. Gordon (icculus@icculus.org) -*/ -#include "SDL_config.h" - -/* Output raw audio data to a file. */ - -#if HAVE_STDIO_H -#include <stdio.h> -#endif - -#include "SDL_rwops.h" -#include "SDL_timer.h" -#include "SDL_audio.h" -#include "../SDL_audiomem.h" -#include "../SDL_audio_c.h" -#include "../SDL_audiodev_c.h" -#include "SDL_diskaudio.h" - -/* The tag name used by DISK audio */ -#define DISKAUD_DRIVER_NAME "disk" - -/* environment variables and defaults. */ -#define DISKENVR_OUTFILE "SDL_DISKAUDIOFILE" -#define DISKDEFAULT_OUTFILE "sdlaudio.raw" -#define DISKENVR_WRITEDELAY "SDL_DISKAUDIODELAY" -#define DISKDEFAULT_WRITEDELAY 150 - -/* Audio driver functions */ -static int DISKAUD_OpenAudio(_THIS, SDL_AudioSpec *spec); -static void DISKAUD_WaitAudio(_THIS); -static void DISKAUD_PlayAudio(_THIS); -static Uint8 *DISKAUD_GetAudioBuf(_THIS); -static void DISKAUD_CloseAudio(_THIS); - -static const char *DISKAUD_GetOutputFilename(void) -{ - const char *envr = SDL_getenv(DISKENVR_OUTFILE); - return((envr != NULL) ? envr : DISKDEFAULT_OUTFILE); -} - -/* Audio driver bootstrap functions */ -static int DISKAUD_Available(void) -{ - const char *envr = SDL_getenv("SDL_AUDIODRIVER"); - if (envr && (SDL_strcmp(envr, DISKAUD_DRIVER_NAME) == 0)) { - return(1); - } - return(0); -} - -static void DISKAUD_DeleteDevice(SDL_AudioDevice *device) -{ - SDL_free(device->hidden); - SDL_free(device); -} - -static SDL_AudioDevice *DISKAUD_CreateDevice(int devindex) -{ - SDL_AudioDevice *this; - const char *envr; - - /* 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)); - - envr = SDL_getenv(DISKENVR_WRITEDELAY); - this->hidden->write_delay = (envr) ? SDL_atoi(envr) : DISKDEFAULT_WRITEDELAY; - - /* Set the function pointers */ - this->OpenAudio = DISKAUD_OpenAudio; - this->WaitAudio = DISKAUD_WaitAudio; - this->PlayAudio = DISKAUD_PlayAudio; - this->GetAudioBuf = DISKAUD_GetAudioBuf; - this->CloseAudio = DISKAUD_CloseAudio; - - this->free = DISKAUD_DeleteDevice; - - return this; -} - -AudioBootStrap DISKAUD_bootstrap = { - DISKAUD_DRIVER_NAME, "direct-to-disk audio", - DISKAUD_Available, DISKAUD_CreateDevice -}; - -/* This function waits until it is possible to write a full sound buffer */ -static void DISKAUD_WaitAudio(_THIS) -{ - SDL_Delay(this->hidden->write_delay); -} - -static void DISKAUD_PlayAudio(_THIS) -{ - int written; - - /* Write the audio data */ - written = SDL_RWwrite(this->hidden->output, - this->hidden->mixbuf, 1, - this->hidden->mixlen); - - /* If we couldn't write, assume fatal error for now */ - if ( (Uint32)written != this->hidden->mixlen ) { - this->enabled = 0; - } -#ifdef DEBUG_AUDIO - fprintf(stderr, "Wrote %d bytes of audio data\n", written); -#endif -} - -static Uint8 *DISKAUD_GetAudioBuf(_THIS) -{ - return(this->hidden->mixbuf); -} - -static void DISKAUD_CloseAudio(_THIS) -{ - if ( this->hidden->mixbuf != NULL ) { - SDL_FreeAudioMem(this->hidden->mixbuf); - this->hidden->mixbuf = NULL; - } - if ( this->hidden->output != NULL ) { - SDL_RWclose(this->hidden->output); - this->hidden->output = NULL; - } -} - -static int DISKAUD_OpenAudio(_THIS, SDL_AudioSpec *spec) -{ - const char *fname = DISKAUD_GetOutputFilename(); - - /* Open the audio device */ - this->hidden->output = SDL_RWFromFile(fname, "wb"); - if ( this->hidden->output == NULL ) { - return(-1); - } - -#if HAVE_STDIO_H - fprintf(stderr, "WARNING: You are using the SDL disk writer" - " audio driver!\n Writing to file [%s].\n", fname); -#endif - - /* Allocate mixing buffer */ - this->hidden->mixlen = spec->size; - this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen); - if ( this->hidden->mixbuf == NULL ) { - return(-1); - } - SDL_memset(this->hidden->mixbuf, spec->silence, spec->size); - - /* We're ready to rock and roll. :-) */ - return(0); -} - |