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annotate src/audio/mme/SDL_mmeaudio.c @ 4170:092c0bc69155 SDL-1.2

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Fixed bug #618 Description From Tim Angus 2008-08-30 12:23:56 (-) [reply] As we all know SDL 1.2 doesn't handle dead keys well since one key press potentially equals two (or more) characters. For example, on many layouts, keying <backquote>,<space> results in <no character>,<backquote><space>. Since the unicode member of the SDL_keysym struct only has room for one character, only one can be returned. On Linux, the first character is returned. On Windows however, unless the exact number of characters generated by the keypress is 1, nothing is returned. The following patch addresses this inconsistency. Updated patch which includes a further fix to the handling of the numpad when numlock is on. This further fix is courtesy Amanieu d'Antras.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 13 Apr 2009 08:42:09 +0000
parents a1b03ba2fcd0
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* Tru64 UNIX MME support */
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25 #include <mme_api.h>
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26
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27 #include "SDL_timer.h"
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28 #include "SDL_audio.h"
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29 #include "../SDL_audio_c.h"
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30 #include "SDL_mmeaudio.h"
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31
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32 static BOOL inUse[NUM_BUFFERS];
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33
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34 /* Audio driver functions */
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35 static int MME_OpenAudio(_THIS, SDL_AudioSpec *spec);
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36 static void MME_WaitAudio(_THIS);
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37 static Uint8 *MME_GetAudioBuf(_THIS);
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38 static void MME_PlayAudio(_THIS);
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39 static void MME_WaitDone(_THIS);
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40 static void MME_CloseAudio(_THIS);
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41
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42 /* Audio driver bootstrap functions */
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43 static int Audio_Available(void)
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44 {
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45 return(1);
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46 }
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47
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48 static void Audio_DeleteDevice(SDL_AudioDevice *device)
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49 {
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50 if ( device ) {
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51 if ( device->hidden ) {
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52 SDL_free(device->hidden);
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53 device->hidden = NULL;
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54 }
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55 SDL_free(device);
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56 device = NULL;
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57 }
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58 }
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59
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60 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
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61 {
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62 SDL_AudioDevice *this;
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63
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64 /* Initialize all variables that we clean on shutdown */
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65 this = SDL_malloc(sizeof(SDL_AudioDevice));
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66 if ( this ) {
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67 SDL_memset(this, 0, (sizeof *this));
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68 this->hidden = SDL_malloc((sizeof *this->hidden));
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69 }
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70 if ( (this == NULL) || (this->hidden == NULL) ) {
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71 SDL_OutOfMemory();
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72 if ( this ) {
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73 SDL_free(this);
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74 }
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75 return(0);
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76 }
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77 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
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78 /* Set the function pointers */
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79 this->OpenAudio = MME_OpenAudio;
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80 this->WaitAudio = MME_WaitAudio;
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81 this->PlayAudio = MME_PlayAudio;
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82 this->GetAudioBuf = MME_GetAudioBuf;
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83 this->WaitDone = MME_WaitDone;
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84 this->CloseAudio = MME_CloseAudio;
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85 this->free = Audio_DeleteDevice;
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86
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87 return this;
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88 }
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89
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90 AudioBootStrap MMEAUDIO_bootstrap = {
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91 "waveout", "Tru64 MME WaveOut",
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92 Audio_Available, Audio_CreateDevice
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93 };
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94
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95 static void SetMMerror(char *function, MMRESULT code)
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96 {
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97 int len;
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98 char errbuf[MAXERRORLENGTH];
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99
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100 SDL_snprintf(errbuf, SDL_arraysize(errbuf), "%s: ", function);
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101 len = SDL_strlen(errbuf);
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102 waveOutGetErrorText(code, errbuf+len, MAXERRORLENGTH-len);
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103 SDL_SetError("%s",errbuf);
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104 }
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105
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106 static void CALLBACK MME_CALLBACK(HWAVEOUT hwo,
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107 UINT uMsg,
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108 DWORD dwInstance,
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109 LPARAM dwParam1,
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110 LPARAM dwParam2)
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111 {
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112 WAVEHDR *wp = (WAVEHDR *) dwParam1;
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113
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114 if ( uMsg == WOM_DONE )
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115 inUse[wp->dwUser] = FALSE;
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116 }
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117
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118 static int MME_OpenAudio(_THIS, SDL_AudioSpec *spec)
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119 {
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120 MMRESULT result;
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121 int i;
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122
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123 mixbuf = NULL;
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124
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125 /* Set basic WAVE format parameters */
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parents:
diff changeset
126 shm = mmeAllocMem(sizeof(*shm));
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parents:
diff changeset
127 if ( shm == NULL ) {
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parents:
diff changeset
128 SDL_SetError("Out of memory: shm");
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parents:
diff changeset
129 return(-1);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
130 }
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
131 shm->sound = 0;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
132 shm->wFmt.wf.wFormatTag = WAVE_FORMAT_PCM;
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diff changeset
133
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
134 /* Determine the audio parameters from the AudioSpec */
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
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parents:
diff changeset
135 switch ( spec->format & 0xFF ) {
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diff changeset
136 case 8:
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
137 /* Unsigned 8 bit audio data */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
138 spec->format = AUDIO_U8;
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diff changeset
139 shm->wFmt.wBitsPerSample = 8;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
140 break;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
141 case 16:
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
142 /* Signed 16 bit audio data */
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
143 spec->format = AUDIO_S16;
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144 shm->wFmt.wBitsPerSample = 16;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
145 break;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146 default:
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147 SDL_SetError("Unsupported audio format");
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diff changeset
148 return(-1);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
149 }
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
150
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
151 shm->wFmt.wf.nChannels = spec->channels;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
152 shm->wFmt.wf.nSamplesPerSec = spec->freq;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153 shm->wFmt.wf.nBlockAlign =
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 shm->wFmt.wf.nChannels * shm->wFmt.wBitsPerSample / 8;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 shm->wFmt.wf.nAvgBytesPerSec =
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
156 shm->wFmt.wf.nSamplesPerSec * shm->wFmt.wf.nBlockAlign;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
158 /* Check the buffer size -- minimum of 1/4 second (word aligned) */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
159 if ( spec->samples < (spec->freq/4) )
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
160 spec->samples = ((spec->freq/4)+3)&~3;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
161
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 /* Update the fragment size as size in bytes */
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
163 SDL_CalculateAudioSpec(spec);
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
164
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
165 /* Open the audio device */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166 result = waveOutOpen(&(shm->sound),
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
167 WAVE_MAPPER,
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168 &(shm->wFmt.wf),
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parents:
diff changeset
169 MME_CALLBACK,
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170 NULL,
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
171 (CALLBACK_FUNCTION|WAVE_OPEN_SHAREABLE));
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172 if ( result != MMSYSERR_NOERROR ) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
173 SetMMerror("waveOutOpen()", result);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174 return(-1);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177 /* Create the sound buffers */
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
178 mixbuf = (Uint8 *)mmeAllocBuffer(NUM_BUFFERS * (spec->size));
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diff changeset
179 if ( mixbuf == NULL ) {
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
180 SDL_SetError("Out of memory: mixbuf");
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diff changeset
181 return(-1);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182 }
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diff changeset
183
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
184 for (i = 0; i < NUM_BUFFERS; i++) {
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diff changeset
185 shm->wHdr[i].lpData = &mixbuf[i * (spec->size)];
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186 shm->wHdr[i].dwBufferLength = spec->size;
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diff changeset
187 shm->wHdr[i].dwFlags = 0;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
188 shm->wHdr[i].dwUser = i;
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diff changeset
189 shm->wHdr[i].dwLoops = 0; /* loop control counter */
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diff changeset
190 shm->wHdr[i].lpNext = NULL; /* reserved for driver */
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diff changeset
191 shm->wHdr[i].reserved = 0;
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diff changeset
192 inUse[i] = FALSE;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
193 }
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
194 next_buffer = 0;
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diff changeset
195 return 0;
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
196 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
197
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
198 static void MME_WaitAudio(_THIS)
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diff changeset
199 {
755
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diff changeset
200 while ( inUse[next_buffer] ) {
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diff changeset
201 mmeWaitForCallbacks();
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diff changeset
202 mmeProcessCallbacks();
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
203 }
654
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diff changeset
204 }
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
205
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
206 static Uint8 *MME_GetAudioBuf(_THIS)
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parents:
diff changeset
207 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
208 Uint8 *retval;
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parents:
diff changeset
209
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
210 inUse[next_buffer] = TRUE;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
211 retval = (Uint8 *)(shm->wHdr[next_buffer].lpData);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
212 return retval;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
213 }
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
214
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215 static void MME_PlayAudio(_THIS)
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
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parents:
diff changeset
216 {
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
217 /* Queue it up */
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
218 waveOutWrite(shm->sound, &(shm->wHdr[next_buffer]), sizeof(WAVEHDR));
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parents:
diff changeset
219 next_buffer = (next_buffer+1)%NUM_BUFFERS;
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parents:
diff changeset
220 }
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
221
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
222 static void MME_WaitDone(_THIS)
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parents:
diff changeset
223 {
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
224 MMRESULT result;
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
225 int i;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
227 if ( shm->sound ) {
755
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diff changeset
228 for (i = 0; i < NUM_BUFFERS; i++)
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diff changeset
229 while ( inUse[i] ) {
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diff changeset
230 mmeWaitForCallbacks();
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diff changeset
231 mmeProcessCallbacks();
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
232 }
654
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parents:
diff changeset
233 result = waveOutReset(shm->sound);
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parents:
diff changeset
234 if ( result != MMSYSERR_NOERROR )
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parents:
diff changeset
235 SetMMerror("waveOutReset()", result);
755
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diff changeset
236 mmeProcessCallbacks();
654
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parents:
diff changeset
237 }
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238 }
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 static void MME_CloseAudio(_THIS)
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241 {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242 MMRESULT result;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 if ( mixbuf ) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 result = mmeFreeBuffer(mixbuf);
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parents:
diff changeset
246 if (result != MMSYSERR_NOERROR )
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parents:
diff changeset
247 SetMMerror("mmeFreeBuffer", result);
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 mixbuf = NULL;
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249 }
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
250
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251 if ( shm ) {
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252 if ( shm->sound ) {
e92bcf2573cb Added audio and CD-ROM support for OSF/Tru64 (thanks Hayashi!)
Sam Lantinga <slouken@libsdl.org>
parents:
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253 result = waveOutClose(shm->sound);
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254 if (result != MMSYSERR_NOERROR )
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255 SetMMerror("waveOutClose()", result);
755
b1595db396a7 Date: Fri, 12 Dec 2003 11:51:21 +0900
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256 mmeProcessCallbacks();
654
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257 }
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258 result = mmeFreeMem(shm);
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259 if (result != MMSYSERR_NOERROR )
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260 SetMMerror("mmeFreeMem()", result);
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261 shm = NULL;
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262 }
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263 }
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264