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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5131 | clevermous | 1 | /* |
| 2 | Copyright (C) 1996-1997 Id Software, Inc. |
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| 3 | |||
| 4 | This program is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU General Public License |
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| 6 | as published by the Free Software Foundation; either version 2 |
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| 7 | of the License, or (at your option) any later version. |
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| 8 | |||
| 9 | This program is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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| 12 | |||
| 13 | See the GNU General Public License for more details. |
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| 14 | |||
| 15 | You should have received a copy of the GNU General Public License |
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| 16 | along with this program; if not, write to the Free Software |
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| 17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 18 | |||
| 19 | */ |
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| 20 | #include |
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| 21 | #include |
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| 22 | #include |
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| 23 | #include |
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| 24 | #include |
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| 25 | #include |
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| 26 | #include |
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| 27 | #include |
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| 28 | #include |
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| 29 | #include |
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| 30 | #include "quakedef.h" |
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| 31 | |||
| 32 | int audio_fd; |
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| 33 | int snd_inited; |
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| 34 | |||
| 35 | static int tryrates[] = { 11025, 22051, 44100, 8000 }; |
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| 36 | |||
| 37 | qboolean SNDDMA_Init(void) |
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| 38 | { |
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| 39 | |||
| 40 | int rc; |
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| 41 | int fmt; |
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| 42 | int tmp; |
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| 43 | int i; |
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| 44 | char *s; |
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| 45 | struct audio_buf_info info; |
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| 46 | int caps; |
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| 47 | |||
| 48 | snd_inited = 0; |
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| 49 | |||
| 50 | // open /dev/dsp, confirm capability to mmap, and get size of dma buffer |
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| 51 | |||
| 52 | audio_fd = open("/dev/dsp", O_RDWR); |
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| 53 | if (audio_fd < 0) |
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| 54 | { |
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| 55 | perror("/dev/dsp"); |
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| 56 | Con_Printf("Could not open /dev/dsp\n"); |
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| 57 | return 0; |
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| 58 | } |
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| 59 | |||
| 60 | rc = ioctl(audio_fd, SNDCTL_DSP_RESET, 0); |
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| 61 | if (rc < 0) |
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| 62 | { |
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| 63 | perror("/dev/dsp"); |
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| 64 | Con_Printf("Could not reset /dev/dsp\n"); |
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| 65 | close(audio_fd); |
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| 66 | return 0; |
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| 67 | } |
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| 68 | |||
| 69 | if (ioctl(audio_fd, SNDCTL_DSP_GETCAPS, &caps)==-1) |
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| 70 | { |
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| 71 | perror("/dev/dsp"); |
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| 72 | Con_Printf("Sound driver too old\n"); |
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| 73 | close(audio_fd); |
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| 74 | return 0; |
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| 75 | } |
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| 76 | |||
| 77 | if (!(caps & DSP_CAP_TRIGGER) || !(caps & DSP_CAP_MMAP)) |
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| 78 | { |
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| 79 | Con_Printf("Sorry but your soundcard can't do this\n"); |
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| 80 | close(audio_fd); |
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| 81 | return 0; |
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| 82 | } |
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| 83 | |||
| 84 | if (ioctl(audio_fd, SNDCTL_DSP_GETOSPACE, &info)==-1) |
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| 85 | { |
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| 86 | perror("GETOSPACE"); |
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| 87 | Con_Printf("Um, can't do GETOSPACE?\n"); |
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| 88 | close(audio_fd); |
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| 89 | return 0; |
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| 90 | } |
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| 91 | |||
| 92 | shm = &sn; |
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| 93 | shm->splitbuffer = 0; |
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| 94 | |||
| 95 | // set sample bits & speed |
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| 96 | |||
| 97 | s = getenv("QUAKE_SOUND_SAMPLEBITS"); |
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| 98 | if (s) shm->samplebits = atoi(s); |
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| 99 | else if ((i = COM_CheckParm("-sndbits")) != 0) |
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| 100 | shm->samplebits = atoi(com_argv[i+1]); |
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| 101 | if (shm->samplebits != 16 && shm->samplebits != 8) |
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| 102 | { |
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| 103 | ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &fmt); |
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| 104 | if (fmt & AFMT_S16_LE) shm->samplebits = 16; |
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| 105 | else if (fmt & AFMT_U8) shm->samplebits = 8; |
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| 106 | } |
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| 107 | |||
| 108 | s = getenv("QUAKE_SOUND_SPEED"); |
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| 109 | if (s) shm->speed = atoi(s); |
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| 110 | else if ((i = COM_CheckParm("-sndspeed")) != 0) |
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| 111 | shm->speed = atoi(com_argv[i+1]); |
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| 112 | else |
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| 113 | { |
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| 114 | for (i=0 ; i |
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| 115 | if (!ioctl(audio_fd, SNDCTL_DSP_SPEED, &tryrates[i])) break; |
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| 116 | shm->speed = tryrates[i]; |
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| 117 | } |
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| 118 | |||
| 119 | s = getenv("QUAKE_SOUND_CHANNELS"); |
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| 120 | if (s) shm->channels = atoi(s); |
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| 121 | else if ((i = COM_CheckParm("-sndmono")) != 0) |
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| 122 | shm->channels = 1; |
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| 123 | else if ((i = COM_CheckParm("-sndstereo")) != 0) |
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| 124 | shm->channels = 2; |
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| 125 | else shm->channels = 2; |
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| 126 | |||
| 127 | shm->samples = info.fragstotal * info.fragsize / (shm->samplebits/8); |
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| 128 | shm->submission_chunk = 1; |
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| 129 | |||
| 130 | // memory map the dma buffer |
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| 131 | |||
| 132 | shm->buffer = (unsigned char *) mmap(NULL, info.fragstotal |
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| 133 | * info.fragsize, PROT_WRITE, MAP_FILE|MAP_SHARED, audio_fd, 0); |
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| 134 | if (!shm->buffer || shm->buffer == (unsigned char *)-1) |
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| 135 | { |
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| 136 | perror("/dev/dsp"); |
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| 137 | Con_Printf("Could not mmap /dev/dsp\n"); |
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| 138 | close(audio_fd); |
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| 139 | return 0; |
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| 140 | } |
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| 141 | |||
| 142 | tmp = 0; |
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| 143 | if (shm->channels == 2) |
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| 144 | tmp = 1; |
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| 145 | rc = ioctl(audio_fd, SNDCTL_DSP_STEREO, &tmp); |
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| 146 | if (rc < 0) |
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| 147 | { |
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| 148 | perror("/dev/dsp"); |
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| 149 | Con_Printf("Could not set /dev/dsp to stereo=%d", shm->channels); |
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| 150 | close(audio_fd); |
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| 151 | return 0; |
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| 152 | } |
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| 153 | if (tmp) |
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| 154 | shm->channels = 2; |
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| 155 | else |
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| 156 | shm->channels = 1; |
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| 157 | |||
| 158 | rc = ioctl(audio_fd, SNDCTL_DSP_SPEED, &shm->speed); |
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| 159 | if (rc < 0) |
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| 160 | { |
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| 161 | perror("/dev/dsp"); |
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| 162 | Con_Printf("Could not set /dev/dsp speed to %d", shm->speed); |
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| 163 | close(audio_fd); |
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| 164 | return 0; |
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| 165 | } |
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| 166 | |||
| 167 | if (shm->samplebits == 16) |
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| 168 | { |
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| 169 | rc = AFMT_S16_LE; |
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| 170 | rc = ioctl(audio_fd, SNDCTL_DSP_SETFMT, &rc); |
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| 171 | if (rc < 0) |
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| 172 | { |
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| 173 | perror("/dev/dsp"); |
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| 174 | Con_Printf("Could not support 16-bit data. Try 8-bit.\n"); |
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| 175 | close(audio_fd); |
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| 176 | return 0; |
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| 177 | } |
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| 178 | } |
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| 179 | else if (shm->samplebits == 8) |
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| 180 | { |
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| 181 | rc = AFMT_U8; |
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| 182 | rc = ioctl(audio_fd, SNDCTL_DSP_SETFMT, &rc); |
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| 183 | if (rc < 0) |
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| 184 | { |
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| 185 | perror("/dev/dsp"); |
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| 186 | Con_Printf("Could not support 8-bit data.\n"); |
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| 187 | close(audio_fd); |
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| 188 | return 0; |
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| 189 | } |
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| 190 | } |
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| 191 | else |
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| 192 | { |
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| 193 | perror("/dev/dsp"); |
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| 194 | Con_Printf("%d-bit sound not supported.", shm->samplebits); |
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| 195 | close(audio_fd); |
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| 196 | return 0; |
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| 197 | } |
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| 198 | |||
| 199 | // toggle the trigger & start her up |
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| 200 | |||
| 201 | tmp = 0; |
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| 202 | rc = ioctl(audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp); |
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| 203 | if (rc < 0) |
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| 204 | { |
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| 205 | perror("/dev/dsp"); |
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| 206 | Con_Printf("Could not toggle.\n"); |
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| 207 | close(audio_fd); |
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| 208 | return 0; |
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| 209 | } |
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| 210 | tmp = PCM_ENABLE_OUTPUT; |
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| 211 | rc = ioctl(audio_fd, SNDCTL_DSP_SETTRIGGER, &tmp); |
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| 212 | if (rc < 0) |
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| 213 | { |
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| 214 | perror("/dev/dsp"); |
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| 215 | Con_Printf("Could not toggle.\n"); |
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| 216 | close(audio_fd); |
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| 217 | return 0; |
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| 218 | } |
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| 219 | |||
| 220 | shm->samplepos = 0; |
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| 221 | |||
| 222 | snd_inited = 1; |
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| 223 | return 1; |
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| 224 | |||
| 225 | } |
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| 226 | |||
| 227 | int SNDDMA_GetDMAPos(void) |
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| 228 | { |
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| 229 | |||
| 230 | struct count_info count; |
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| 231 | |||
| 232 | if (!snd_inited) return 0; |
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| 233 | |||
| 234 | if (ioctl(audio_fd, SNDCTL_DSP_GETOPTR, &count)==-1) |
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| 235 | { |
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| 236 | perror("/dev/dsp"); |
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| 237 | Con_Printf("Uh, sound dead.\n"); |
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| 238 | close(audio_fd); |
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| 239 | snd_inited = 0; |
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| 240 | return 0; |
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| 241 | } |
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| 242 | // shm->samplepos = (count.bytes / (shm->samplebits / 8)) & (shm->samples-1); |
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| 243 | // fprintf(stderr, "%d \r", count.ptr); |
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| 244 | shm->samplepos = count.ptr / (shm->samplebits / 8); |
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| 245 | |||
| 246 | return shm->samplepos; |
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| 247 | |||
| 248 | } |
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| 249 | |||
| 250 | void SNDDMA_Shutdown(void) |
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| 251 | { |
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| 252 | if (snd_inited) |
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| 253 | { |
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| 254 | close(audio_fd); |
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| 255 | snd_inited = 0; |
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| 256 | } |
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| 257 | } |
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| 258 | |||
| 259 | /* |
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| 260 | ============== |
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| 261 | SNDDMA_Submit |
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| 262 | |||
| 263 | Send sound to device if buffer isn't really the dma buffer |
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| 264 | =============== |
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| 265 | */ |
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| 266 | void SNDDMA_Submit(void) |
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| 267 | { |
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| 268 | } |
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| 269 |