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Diffstat (limited to 'distrib/sdl-1.2.12/src/audio/windib/SDL_dibaudio.c')
-rw-r--r--distrib/sdl-1.2.12/src/audio/windib/SDL_dibaudio.c343
1 files changed, 0 insertions, 343 deletions
diff --git a/distrib/sdl-1.2.12/src/audio/windib/SDL_dibaudio.c b/distrib/sdl-1.2.12/src/audio/windib/SDL_dibaudio.c
deleted file mode 100644
index 3a86126..0000000
--- a/distrib/sdl-1.2.12/src/audio/windib/SDL_dibaudio.c
+++ /dev/null
@@ -1,343 +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 */
-
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#include <mmsystem.h>
-
-#include "SDL_timer.h"
-#include "SDL_audio.h"
-#include "../SDL_audio_c.h"
-#include "SDL_dibaudio.h"
-#if defined(_WIN32_WCE) && (_WIN32_WCE < 300)
-#include "win_ce_semaphore.h"
-#endif
-
-
-/* Audio driver functions */
-static int DIB_OpenAudio(_THIS, SDL_AudioSpec *spec);
-static void DIB_ThreadInit(_THIS);
-static void DIB_WaitAudio(_THIS);
-static Uint8 *DIB_GetAudioBuf(_THIS);
-static void DIB_PlayAudio(_THIS);
-static void DIB_WaitDone(_THIS);
-static void DIB_CloseAudio(_THIS);
-
-int volatile dibaudio_thread_debug = 0;
-int volatile dibaudio_cb_debug = 0;
-int volatile dibaudio_main_debug = 0;
-
-/* 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 = DIB_OpenAudio;
- this->ThreadInit = DIB_ThreadInit;
- this->WaitAudio = DIB_WaitAudio;
- this->PlayAudio = DIB_PlayAudio;
- this->GetAudioBuf = DIB_GetAudioBuf;
- this->WaitDone = DIB_WaitDone;
- this->CloseAudio = DIB_CloseAudio;
-
- this->free = Audio_DeleteDevice;
-
- return this;
-}
-
-AudioBootStrap WAVEOUT_bootstrap = {
- "waveout", "Win95/98/NT/2000 WaveOut",
- Audio_Available, Audio_CreateDevice
-};
-
-
-/* The Win32 callback for filling the WAVE device */
-static void CALLBACK FillSound(HWAVEOUT hwo, UINT uMsg, DWORD_PTR dwInstance,
- DWORD dwParam1, DWORD dwParam2)
-{
- SDL_AudioDevice *this = (SDL_AudioDevice *)dwInstance;
-
- /* Only service "buffer done playing" messages */
- if ( uMsg != WOM_DONE )
- return;
-
- /* Signal that we are done playing a buffer */
- dibaudio_cb_debug = 1;
- EnterCriticalSection( &audio_cs );
- dibaudio_cb_debug = 2;
- SetEvent( audio_event );
- dibaudio_cb_debug = 3;
- LeaveCriticalSection( &audio_cs );
- dibaudio_cb_debug = 4;
-}
-
-static void SetMMerror(char *function, MMRESULT code)
-{
- size_t len;
- char errbuf[MAXERRORLENGTH];
-#ifdef _WIN32_WCE
- wchar_t werrbuf[MAXERRORLENGTH];
-#endif
-
- SDL_snprintf(errbuf, SDL_arraysize(errbuf), "%s: ", function);
- len = SDL_strlen(errbuf);
-
-#ifdef _WIN32_WCE
- /* UNICODE version */
- waveOutGetErrorText(code, werrbuf, MAXERRORLENGTH-len);
- WideCharToMultiByte(CP_ACP,0,werrbuf,-1,errbuf+len,MAXERRORLENGTH-len,NULL,NULL);
-#else
- waveOutGetErrorText(code, errbuf+len, (UINT)(MAXERRORLENGTH-len));
-#endif
-
- SDL_SetError("%s",errbuf);
-}
-
-/* Set high priority for the audio thread */
-static void DIB_ThreadInit(_THIS)
-{
- SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_HIGHEST);
-}
-
-void DIB_WaitAudio(_THIS)
-{
- /* Wait for an audio chunk to finish */
- dibaudio_thread_debug = 1;
- WaitForSingleObject(audio_event, INFINITE);
- dibaudio_thread_debug = 2;
- ResetEvent( audio_event );
- dibaudio_thread_debug = 3;
-}
-
-Uint8 *DIB_GetAudioBuf(_THIS)
-{
- Uint8 *retval;
-
- dibaudio_thread_debug = 4;
- EnterCriticalSection( &audio_cs );
- dibaudio_thread_debug = 5;
- retval = (Uint8 *)(wavebuf[next_buffer].lpData);
- return retval;
-}
-
-void DIB_PlayAudio(_THIS)
-{
- /* Queue it up */
- dibaudio_thread_debug = 6;
- waveOutWrite(sound, &wavebuf[next_buffer], sizeof(wavebuf[0]));
- dibaudio_thread_debug = 7;
- next_buffer = (next_buffer+1)%NUM_BUFFERS;
- LeaveCriticalSection( &audio_cs );
- dibaudio_thread_debug = 8;
-}
-
-void DIB_WaitDone(_THIS)
-{
- int i, left, tries = 5;
-
- dibaudio_thread_debug = 9;
-
- /* give some time for the wave output to send the last buffer,
- * but don't hang if one was cancelled
- */
- do {
- left = NUM_BUFFERS;
- for ( i=0; i<NUM_BUFFERS; ++i ) {
- if ( wavebuf[i].dwFlags & WHDR_DONE ) {
- --left;
- }
- }
- if ( left == 0 )
- break;
-
- SDL_Delay(100);
- } while ( --tries > 0 );
-
- dibaudio_thread_debug = 10;
-}
-
-void DIB_CloseAudio(_THIS)
-{
- int i;
-
- /* Close up audio */
- if ( audio_event != INVALID_HANDLE_VALUE ) {
-#if defined(_WIN32_WCE) && (_WIN32_WCE < 300)
- CloseSynchHandle(audio_event);
-#else
- CloseHandle(audio_event);
-#endif
- }
- if ( sound ) {
- waveOutReset(sound);
- }
-
- /* Clean up mixing buffers */
- for ( i=0; i<NUM_BUFFERS; ++i ) {
- if ( wavebuf[i].dwUser != 0xFFFF ) {
- waveOutUnprepareHeader(sound, &wavebuf[i],
- sizeof(wavebuf[i]));
- wavebuf[i].dwUser = 0xFFFF;
- }
- }
- /* Free raw mixing buffer */
- if ( mixbuf != NULL ) {
- SDL_free(mixbuf);
- mixbuf = NULL;
- }
-
- if ( sound )
- waveOutClose(sound);
-}
-
-int DIB_OpenAudio(_THIS, SDL_AudioSpec *spec)
-{
- MMRESULT result;
- int i;
- WAVEFORMATEX waveformat;
-
- /* Initialize the wavebuf structures for closing */
- sound = NULL;
- InitializeCriticalSection( &audio_cs );
- audio_event = INVALID_HANDLE_VALUE;
- for ( i = 0; i < NUM_BUFFERS; ++i )
- wavebuf[i].dwUser = 0xFFFF;
- mixbuf = NULL;
-
- /* Set basic WAVE format parameters */
- SDL_memset(&waveformat, 0, sizeof(waveformat));
- waveformat.wFormatTag = WAVE_FORMAT_PCM;
-
- /* Determine the audio parameters from the AudioSpec */
- switch ( spec->format & 0xFF ) {
- case 8:
- /* Unsigned 8 bit audio data */
- spec->format = AUDIO_U8;
- waveformat.wBitsPerSample = 8;
- break;
- case 16:
- /* Signed 16 bit audio data */
- spec->format = AUDIO_S16;
- waveformat.wBitsPerSample = 16;
- break;
- default:
- SDL_SetError("Unsupported audio format");
- return(-1);
- }
- waveformat.nChannels = spec->channels;
- waveformat.nSamplesPerSec = spec->freq;
- waveformat.nBlockAlign =
- waveformat.nChannels * (waveformat.wBitsPerSample/8);
- waveformat.nAvgBytesPerSec =
- waveformat.nSamplesPerSec * waveformat.nBlockAlign;
-
- /* Check the buffer size -- minimum of 1/4 second (word aligned) */
- if ( spec->samples < (spec->freq/4) )
- spec->samples = ((spec->freq/4)+3)&~3;
-
- /* Update the fragment size as size in bytes */
- SDL_CalculateAudioSpec(spec);
-
- /* Open the audio device */
- result = waveOutOpen(&sound, WAVE_MAPPER, &waveformat,
- (DWORD_PTR)FillSound, (DWORD_PTR)this, CALLBACK_FUNCTION);
- if ( result != MMSYSERR_NOERROR ) {
- SetMMerror("waveOutOpen()", result);
- return(-1);
- }
-
-#ifdef SOUND_DEBUG
- /* Check the sound device we retrieved */
- {
- WAVEOUTCAPS caps;
-
- result = waveOutGetDevCaps((UINT)sound, &caps, sizeof(caps));
- if ( result != MMSYSERR_NOERROR ) {
- SetMMerror("waveOutGetDevCaps()", result);
- return(-1);
- }
- printf("Audio device: %s\n", caps.szPname);
- }
-#endif
-
- /* Create the audio buffer semaphore */
- audio_event = CreateEvent( NULL, TRUE, FALSE, NULL );
- if ( audio_event == NULL ) {
- SDL_SetError("Couldn't create semaphore");
- return(-1);
- }
-
- /* Create the sound buffers */
- mixbuf = (Uint8 *)SDL_malloc(NUM_BUFFERS*spec->size);
- if ( mixbuf == NULL ) {
- SDL_SetError("Out of memory");
- return(-1);
- }
- for ( i = 0; i < NUM_BUFFERS; ++i ) {
- SDL_memset(&wavebuf[i], 0, sizeof(wavebuf[i]));
- wavebuf[i].lpData = (LPSTR) &mixbuf[i*spec->size];
- wavebuf[i].dwBufferLength = spec->size;
- wavebuf[i].dwFlags = WHDR_DONE;
- result = waveOutPrepareHeader(sound, &wavebuf[i],
- sizeof(wavebuf[i]));
- if ( result != MMSYSERR_NOERROR ) {
- SetMMerror("waveOutPrepareHeader()", result);
- return(-1);
- }
- }
-
- /* Ready to go! */
- next_buffer = 0;
- return(0);
-}
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