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1 | 85571bc7 | bellard | /*
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2 | 85571bc7 | bellard | * QEMU OSS audio output driver
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3 | 85571bc7 | bellard | *
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4 | 85571bc7 | bellard | * Copyright (c) 2003-2004 Vassili Karpov (malc)
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5 | 85571bc7 | bellard | *
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6 | 85571bc7 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 85571bc7 | bellard | * of this software and associated documentation files (the "Software"), to deal
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8 | 85571bc7 | bellard | * in the Software without restriction, including without limitation the rights
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9 | 85571bc7 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 85571bc7 | bellard | * copies of the Software, and to permit persons to whom the Software is
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11 | 85571bc7 | bellard | * furnished to do so, subject to the following conditions:
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12 | 85571bc7 | bellard | *
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13 | 85571bc7 | bellard | * The above copyright notice and this permission notice shall be included in
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14 | 85571bc7 | bellard | * all copies or substantial portions of the Software.
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15 | 85571bc7 | bellard | *
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16 | 85571bc7 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 85571bc7 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 85571bc7 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 85571bc7 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 85571bc7 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 85571bc7 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 85571bc7 | bellard | * THE SOFTWARE.
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23 | 85571bc7 | bellard | */
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24 | 85571bc7 | bellard | #include <sys/mman.h> |
25 | 85571bc7 | bellard | #include <sys/types.h> |
26 | 85571bc7 | bellard | #include <sys/ioctl.h> |
27 | 85571bc7 | bellard | #include <sys/soundcard.h> |
28 | fb065187 | bellard | #include <assert.h> |
29 | fb065187 | bellard | #include "vl.h" |
30 | fb065187 | bellard | |
31 | fb065187 | bellard | #include "audio/audio_int.h" |
32 | fb065187 | bellard | |
33 | fb065187 | bellard | typedef struct OSSVoice { |
34 | fb065187 | bellard | HWVoice hw; |
35 | fb065187 | bellard | void *pcm_buf;
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36 | fb065187 | bellard | int fd;
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37 | fb065187 | bellard | int nfrags;
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38 | fb065187 | bellard | int fragsize;
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39 | fb065187 | bellard | int mmapped;
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40 | fb065187 | bellard | int old_optr;
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41 | fb065187 | bellard | } OSSVoice; |
42 | 85571bc7 | bellard | |
43 | fb065187 | bellard | #define dolog(...) AUD_log ("oss", __VA_ARGS__) |
44 | fb065187 | bellard | #ifdef DEBUG
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45 | fb065187 | bellard | #define ldebug(...) dolog (__VA_ARGS__)
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46 | fb065187 | bellard | #else
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47 | fb065187 | bellard | #define ldebug(...)
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48 | fb065187 | bellard | #endif
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49 | 85571bc7 | bellard | |
50 | 85571bc7 | bellard | #define QC_OSS_FRAGSIZE "QEMU_OSS_FRAGSIZE" |
51 | 85571bc7 | bellard | #define QC_OSS_NFRAGS "QEMU_OSS_NFRAGS" |
52 | 85571bc7 | bellard | #define QC_OSS_MMAP "QEMU_OSS_MMAP" |
53 | 85571bc7 | bellard | #define QC_OSS_DEV "QEMU_OSS_DEV" |
54 | 85571bc7 | bellard | |
55 | 85571bc7 | bellard | #define errstr() strerror (errno)
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56 | 85571bc7 | bellard | |
57 | 85571bc7 | bellard | static struct { |
58 | 85571bc7 | bellard | int try_mmap;
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59 | 85571bc7 | bellard | int nfrags;
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60 | 85571bc7 | bellard | int fragsize;
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61 | 85571bc7 | bellard | const char *dspname; |
62 | 85571bc7 | bellard | } conf = { |
63 | 85571bc7 | bellard | .try_mmap = 0,
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64 | 85571bc7 | bellard | .nfrags = 4,
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65 | 85571bc7 | bellard | .fragsize = 4096,
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66 | 85571bc7 | bellard | .dspname = "/dev/dsp"
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67 | 85571bc7 | bellard | }; |
68 | 85571bc7 | bellard | |
69 | 85571bc7 | bellard | struct oss_params {
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70 | 85571bc7 | bellard | int freq;
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71 | 85571bc7 | bellard | audfmt_e fmt; |
72 | 85571bc7 | bellard | int nchannels;
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73 | 85571bc7 | bellard | int nfrags;
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74 | 85571bc7 | bellard | int fragsize;
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75 | 85571bc7 | bellard | }; |
76 | 85571bc7 | bellard | |
77 | 85571bc7 | bellard | static int oss_hw_write (SWVoice *sw, void *buf, int len) |
78 | 85571bc7 | bellard | { |
79 | 85571bc7 | bellard | return pcm_hw_write (sw, buf, len);
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80 | 85571bc7 | bellard | } |
81 | 85571bc7 | bellard | |
82 | 85571bc7 | bellard | static int AUD_to_ossfmt (audfmt_e fmt) |
83 | 85571bc7 | bellard | { |
84 | 85571bc7 | bellard | switch (fmt) {
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85 | 85571bc7 | bellard | case AUD_FMT_S8: return AFMT_S8; |
86 | 85571bc7 | bellard | case AUD_FMT_U8: return AFMT_U8; |
87 | 85571bc7 | bellard | case AUD_FMT_S16: return AFMT_S16_LE; |
88 | 85571bc7 | bellard | case AUD_FMT_U16: return AFMT_U16_LE; |
89 | 85571bc7 | bellard | default:
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90 | 85571bc7 | bellard | dolog ("Internal logic error: Bad audio format %d\nAborting\n", fmt);
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91 | 85571bc7 | bellard | exit (EXIT_FAILURE); |
92 | 85571bc7 | bellard | } |
93 | 85571bc7 | bellard | } |
94 | 85571bc7 | bellard | |
95 | 85571bc7 | bellard | static int oss_to_audfmt (int fmt) |
96 | 85571bc7 | bellard | { |
97 | 85571bc7 | bellard | switch (fmt) {
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98 | 85571bc7 | bellard | case AFMT_S8: return AUD_FMT_S8; |
99 | 85571bc7 | bellard | case AFMT_U8: return AUD_FMT_U8; |
100 | 85571bc7 | bellard | case AFMT_S16_LE: return AUD_FMT_S16; |
101 | 85571bc7 | bellard | case AFMT_U16_LE: return AUD_FMT_U16; |
102 | 85571bc7 | bellard | default:
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103 | 85571bc7 | bellard | dolog ("Internal logic error: Unrecognized OSS audio format %d\n"
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104 | 85571bc7 | bellard | "Aborting\n",
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105 | 85571bc7 | bellard | fmt); |
106 | 85571bc7 | bellard | exit (EXIT_FAILURE); |
107 | 85571bc7 | bellard | } |
108 | 85571bc7 | bellard | } |
109 | 85571bc7 | bellard | |
110 | 85571bc7 | bellard | #ifdef DEBUG_PCM
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111 | 85571bc7 | bellard | static void oss_dump_pcm_info (struct oss_params *req, struct oss_params *obt) |
112 | 85571bc7 | bellard | { |
113 | 85571bc7 | bellard | dolog ("parameter | requested value | obtained value\n");
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114 | 85571bc7 | bellard | dolog ("format | %10d | %10d\n", req->fmt, obt->fmt);
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115 | 85571bc7 | bellard | dolog ("channels | %10d | %10d\n", req->nchannels, obt->nchannels);
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116 | 85571bc7 | bellard | dolog ("frequency | %10d | %10d\n", req->freq, obt->freq);
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117 | 85571bc7 | bellard | dolog ("nfrags | %10d | %10d\n", req->nfrags, obt->nfrags);
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118 | 85571bc7 | bellard | dolog ("fragsize | %10d | %10d\n", req->fragsize, obt->fragsize);
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119 | 85571bc7 | bellard | } |
120 | 85571bc7 | bellard | #endif
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121 | 85571bc7 | bellard | |
122 | 85571bc7 | bellard | static int oss_open (struct oss_params *req, struct oss_params *obt, int *pfd) |
123 | 85571bc7 | bellard | { |
124 | 85571bc7 | bellard | int fd;
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125 | 85571bc7 | bellard | int mmmmssss;
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126 | 85571bc7 | bellard | audio_buf_info abinfo; |
127 | 85571bc7 | bellard | int fmt, freq, nchannels;
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128 | 85571bc7 | bellard | const char *dspname = conf.dspname; |
129 | 85571bc7 | bellard | |
130 | 85571bc7 | bellard | fd = open (dspname, O_RDWR | O_NONBLOCK); |
131 | 85571bc7 | bellard | if (-1 == fd) { |
132 | 85571bc7 | bellard | dolog ("Could not initialize audio hardware. Failed to open `%s':\n"
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133 | 85571bc7 | bellard | "Reason:%s\n",
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134 | 85571bc7 | bellard | dspname, |
135 | 85571bc7 | bellard | errstr ()); |
136 | 85571bc7 | bellard | return -1; |
137 | 85571bc7 | bellard | } |
138 | 85571bc7 | bellard | |
139 | 85571bc7 | bellard | freq = req->freq; |
140 | 85571bc7 | bellard | nchannels = req->nchannels; |
141 | 85571bc7 | bellard | fmt = req->fmt; |
142 | 85571bc7 | bellard | |
143 | 85571bc7 | bellard | if (ioctl (fd, SNDCTL_DSP_SAMPLESIZE, &fmt)) {
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144 | 85571bc7 | bellard | dolog ("Could not initialize audio hardware\n"
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145 | 85571bc7 | bellard | "Failed to set sample size\n"
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146 | 85571bc7 | bellard | "Reason: %s\n",
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147 | 85571bc7 | bellard | errstr ()); |
148 | 85571bc7 | bellard | goto err;
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149 | 85571bc7 | bellard | } |
150 | 85571bc7 | bellard | |
151 | 85571bc7 | bellard | if (ioctl (fd, SNDCTL_DSP_CHANNELS, &nchannels)) {
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152 | 85571bc7 | bellard | dolog ("Could not initialize audio hardware\n"
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153 | 85571bc7 | bellard | "Failed to set number of channels\n"
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154 | 85571bc7 | bellard | "Reason: %s\n",
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155 | 85571bc7 | bellard | errstr ()); |
156 | 85571bc7 | bellard | goto err;
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157 | 85571bc7 | bellard | } |
158 | 85571bc7 | bellard | |
159 | 85571bc7 | bellard | if (ioctl (fd, SNDCTL_DSP_SPEED, &freq)) {
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160 | 85571bc7 | bellard | dolog ("Could not initialize audio hardware\n"
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161 | 85571bc7 | bellard | "Failed to set frequency\n"
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162 | 85571bc7 | bellard | "Reason: %s\n",
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163 | 85571bc7 | bellard | errstr ()); |
164 | 85571bc7 | bellard | goto err;
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165 | 85571bc7 | bellard | } |
166 | 85571bc7 | bellard | |
167 | 85571bc7 | bellard | if (ioctl (fd, SNDCTL_DSP_NONBLOCK)) {
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168 | 85571bc7 | bellard | dolog ("Could not initialize audio hardware\n"
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169 | 85571bc7 | bellard | "Failed to set non-blocking mode\n"
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170 | 85571bc7 | bellard | "Reason: %s\n",
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171 | 85571bc7 | bellard | errstr ()); |
172 | 85571bc7 | bellard | goto err;
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173 | 85571bc7 | bellard | } |
174 | 85571bc7 | bellard | |
175 | 85571bc7 | bellard | mmmmssss = (req->nfrags << 16) | lsbindex (req->fragsize);
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176 | 85571bc7 | bellard | if (ioctl (fd, SNDCTL_DSP_SETFRAGMENT, &mmmmssss)) {
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177 | 85571bc7 | bellard | dolog ("Could not initialize audio hardware\n"
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178 | 85571bc7 | bellard | "Failed to set buffer length (%d, %d)\n"
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179 | 85571bc7 | bellard | "Reason:%s\n",
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180 | 85571bc7 | bellard | conf.nfrags, conf.fragsize, |
181 | 85571bc7 | bellard | errstr ()); |
182 | 85571bc7 | bellard | goto err;
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183 | 85571bc7 | bellard | } |
184 | 85571bc7 | bellard | |
185 | 85571bc7 | bellard | if (ioctl (fd, SNDCTL_DSP_GETOSPACE, &abinfo)) {
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186 | 85571bc7 | bellard | dolog ("Could not initialize audio hardware\n"
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187 | 85571bc7 | bellard | "Failed to get buffer length\n"
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188 | 85571bc7 | bellard | "Reason:%s\n",
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189 | 85571bc7 | bellard | errstr ()); |
190 | 85571bc7 | bellard | goto err;
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191 | 85571bc7 | bellard | } |
192 | 85571bc7 | bellard | |
193 | 85571bc7 | bellard | obt->fmt = fmt; |
194 | 85571bc7 | bellard | obt->nchannels = nchannels; |
195 | 85571bc7 | bellard | obt->freq = freq; |
196 | 85571bc7 | bellard | obt->nfrags = abinfo.fragstotal; |
197 | 85571bc7 | bellard | obt->fragsize = abinfo.fragsize; |
198 | 85571bc7 | bellard | *pfd = fd; |
199 | 85571bc7 | bellard | |
200 | 85571bc7 | bellard | if ((req->fmt != obt->fmt) ||
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201 | 85571bc7 | bellard | (req->nchannels != obt->nchannels) || |
202 | 85571bc7 | bellard | (req->freq != obt->freq) || |
203 | 85571bc7 | bellard | (req->fragsize != obt->fragsize) || |
204 | 85571bc7 | bellard | (req->nfrags != obt->nfrags)) { |
205 | 85571bc7 | bellard | #ifdef DEBUG_PCM
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206 | 85571bc7 | bellard | dolog ("Audio parameters mismatch\n");
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207 | 85571bc7 | bellard | oss_dump_pcm_info (req, obt); |
208 | 85571bc7 | bellard | #endif
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209 | 85571bc7 | bellard | } |
210 | 85571bc7 | bellard | |
211 | 85571bc7 | bellard | #ifdef DEBUG_PCM
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212 | 85571bc7 | bellard | oss_dump_pcm_info (req, obt); |
213 | 85571bc7 | bellard | #endif
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214 | 85571bc7 | bellard | return 0; |
215 | 85571bc7 | bellard | |
216 | 85571bc7 | bellard | err:
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217 | 85571bc7 | bellard | close (fd); |
218 | 85571bc7 | bellard | return -1; |
219 | 85571bc7 | bellard | } |
220 | 85571bc7 | bellard | |
221 | 85571bc7 | bellard | static void oss_hw_run (HWVoice *hw) |
222 | 85571bc7 | bellard | { |
223 | 85571bc7 | bellard | OSSVoice *oss = (OSSVoice *) hw; |
224 | 85571bc7 | bellard | int err, rpos, live, decr;
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225 | 85571bc7 | bellard | int samples;
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226 | 85571bc7 | bellard | uint8_t *dst; |
227 | 85571bc7 | bellard | st_sample_t *src; |
228 | 85571bc7 | bellard | struct audio_buf_info abinfo;
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229 | 85571bc7 | bellard | struct count_info cntinfo;
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230 | 85571bc7 | bellard | |
231 | 85571bc7 | bellard | live = pcm_hw_get_live (hw); |
232 | 85571bc7 | bellard | if (live <= 0) |
233 | 85571bc7 | bellard | return;
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234 | 85571bc7 | bellard | |
235 | 85571bc7 | bellard | if (oss->mmapped) {
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236 | 85571bc7 | bellard | int bytes;
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237 | 85571bc7 | bellard | |
238 | 85571bc7 | bellard | err = ioctl (oss->fd, SNDCTL_DSP_GETOPTR, &cntinfo); |
239 | 85571bc7 | bellard | if (err < 0) { |
240 | 85571bc7 | bellard | dolog ("SNDCTL_DSP_GETOPTR failed\nReason: %s\n", errstr ());
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241 | 85571bc7 | bellard | return;
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242 | 85571bc7 | bellard | } |
243 | 85571bc7 | bellard | |
244 | 85571bc7 | bellard | if (cntinfo.ptr == oss->old_optr) {
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245 | 85571bc7 | bellard | if (abs (hw->samples - live) < 64) |
246 | 85571bc7 | bellard | dolog ("overrun\n");
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247 | 85571bc7 | bellard | return;
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248 | 85571bc7 | bellard | } |
249 | 85571bc7 | bellard | |
250 | 85571bc7 | bellard | if (cntinfo.ptr > oss->old_optr) {
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251 | 85571bc7 | bellard | bytes = cntinfo.ptr - oss->old_optr; |
252 | 85571bc7 | bellard | } |
253 | 85571bc7 | bellard | else {
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254 | 85571bc7 | bellard | bytes = hw->bufsize + cntinfo.ptr - oss->old_optr; |
255 | 85571bc7 | bellard | } |
256 | 85571bc7 | bellard | |
257 | 85571bc7 | bellard | decr = audio_MIN (bytes >> hw->shift, live); |
258 | 85571bc7 | bellard | } |
259 | 85571bc7 | bellard | else {
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260 | 85571bc7 | bellard | err = ioctl (oss->fd, SNDCTL_DSP_GETOSPACE, &abinfo); |
261 | 85571bc7 | bellard | if (err < 0) { |
262 | 85571bc7 | bellard | dolog ("SNDCTL_DSP_GETOSPACE failed\nReason: %s\n", errstr ());
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263 | 85571bc7 | bellard | return;
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264 | 85571bc7 | bellard | } |
265 | 85571bc7 | bellard | |
266 | 85571bc7 | bellard | decr = audio_MIN (abinfo.bytes >> hw->shift, live); |
267 | 85571bc7 | bellard | if (decr <= 0) |
268 | 85571bc7 | bellard | return;
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269 | 85571bc7 | bellard | } |
270 | 85571bc7 | bellard | |
271 | 85571bc7 | bellard | samples = decr; |
272 | 85571bc7 | bellard | rpos = hw->rpos; |
273 | 85571bc7 | bellard | while (samples) {
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274 | 85571bc7 | bellard | int left_till_end_samples = hw->samples - rpos;
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275 | 85571bc7 | bellard | int convert_samples = audio_MIN (samples, left_till_end_samples);
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276 | 85571bc7 | bellard | |
277 | 85571bc7 | bellard | src = advance (hw->mix_buf, rpos * sizeof (st_sample_t));
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278 | 85571bc7 | bellard | dst = advance (oss->pcm_buf, rpos << hw->shift); |
279 | 85571bc7 | bellard | |
280 | 85571bc7 | bellard | hw->clip (dst, src, convert_samples); |
281 | 85571bc7 | bellard | if (!oss->mmapped) {
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282 | 85571bc7 | bellard | int written;
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283 | 85571bc7 | bellard | |
284 | 85571bc7 | bellard | written = write (oss->fd, dst, convert_samples << hw->shift); |
285 | 85571bc7 | bellard | /* XXX: follow errno recommendations ? */
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286 | 85571bc7 | bellard | if (written == -1) { |
287 | 85571bc7 | bellard | dolog ("Failed to write audio\nReason: %s\n", errstr ());
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288 | 85571bc7 | bellard | continue;
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289 | 85571bc7 | bellard | } |
290 | 85571bc7 | bellard | |
291 | 85571bc7 | bellard | if (written != convert_samples << hw->shift) {
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292 | 85571bc7 | bellard | int wsamples = written >> hw->shift;
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293 | 85571bc7 | bellard | int wbytes = wsamples << hw->shift;
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294 | 85571bc7 | bellard | if (wbytes != written) {
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295 | 85571bc7 | bellard | dolog ("Unaligned write %d, %d\n", wbytes, written);
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296 | 85571bc7 | bellard | } |
297 | 85571bc7 | bellard | memset (src, 0, wbytes);
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298 | 85571bc7 | bellard | decr -= samples; |
299 | 85571bc7 | bellard | rpos = (rpos + wsamples) % hw->samples; |
300 | 85571bc7 | bellard | break;
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301 | 85571bc7 | bellard | } |
302 | 85571bc7 | bellard | } |
303 | 85571bc7 | bellard | memset (src, 0, convert_samples * sizeof (st_sample_t)); |
304 | 85571bc7 | bellard | |
305 | 85571bc7 | bellard | rpos = (rpos + convert_samples) % hw->samples; |
306 | 85571bc7 | bellard | samples -= convert_samples; |
307 | 85571bc7 | bellard | } |
308 | 85571bc7 | bellard | if (oss->mmapped) {
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309 | 85571bc7 | bellard | oss->old_optr = cntinfo.ptr; |
310 | 85571bc7 | bellard | } |
311 | 85571bc7 | bellard | |
312 | 85571bc7 | bellard | pcm_hw_dec_live (hw, decr); |
313 | 85571bc7 | bellard | hw->rpos = rpos; |
314 | 85571bc7 | bellard | } |
315 | 85571bc7 | bellard | |
316 | 85571bc7 | bellard | static void oss_hw_fini (HWVoice *hw) |
317 | 85571bc7 | bellard | { |
318 | 85571bc7 | bellard | int err;
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319 | 85571bc7 | bellard | OSSVoice *oss = (OSSVoice *) hw; |
320 | 85571bc7 | bellard | |
321 | 85571bc7 | bellard | ldebug ("oss_hw_fini\n");
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322 | 85571bc7 | bellard | err = close (oss->fd); |
323 | 85571bc7 | bellard | if (err) {
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324 | 85571bc7 | bellard | dolog ("Failed to close OSS descriptor\nReason: %s\n", errstr ());
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325 | 85571bc7 | bellard | } |
326 | 85571bc7 | bellard | oss->fd = -1;
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327 | 85571bc7 | bellard | |
328 | 85571bc7 | bellard | if (oss->pcm_buf) {
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329 | 85571bc7 | bellard | if (oss->mmapped) {
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330 | 85571bc7 | bellard | err = munmap (oss->pcm_buf, hw->bufsize); |
331 | 85571bc7 | bellard | if (err) {
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332 | 85571bc7 | bellard | dolog ("Failed to unmap OSS buffer\nReason: %s\n",
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333 | 85571bc7 | bellard | errstr ()); |
334 | 85571bc7 | bellard | } |
335 | 85571bc7 | bellard | } |
336 | 85571bc7 | bellard | else {
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337 | 85571bc7 | bellard | qemu_free (oss->pcm_buf); |
338 | 85571bc7 | bellard | } |
339 | 85571bc7 | bellard | oss->pcm_buf = NULL;
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340 | 85571bc7 | bellard | } |
341 | 85571bc7 | bellard | } |
342 | 85571bc7 | bellard | |
343 | 85571bc7 | bellard | static int oss_hw_init (HWVoice *hw, int freq, int nchannels, audfmt_e fmt) |
344 | 85571bc7 | bellard | { |
345 | 85571bc7 | bellard | OSSVoice *oss = (OSSVoice *) hw; |
346 | 85571bc7 | bellard | struct oss_params req, obt;
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347 | 85571bc7 | bellard | |
348 | 85571bc7 | bellard | assert (!oss->fd); |
349 | 85571bc7 | bellard | req.fmt = AUD_to_ossfmt (fmt); |
350 | 85571bc7 | bellard | req.freq = freq; |
351 | 85571bc7 | bellard | req.nchannels = nchannels; |
352 | 85571bc7 | bellard | req.fragsize = conf.fragsize; |
353 | 85571bc7 | bellard | req.nfrags = conf.nfrags; |
354 | 85571bc7 | bellard | |
355 | 85571bc7 | bellard | if (oss_open (&req, &obt, &oss->fd))
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356 | 85571bc7 | bellard | return -1; |
357 | 85571bc7 | bellard | |
358 | 85571bc7 | bellard | hw->freq = obt.freq; |
359 | 85571bc7 | bellard | hw->fmt = oss_to_audfmt (obt.fmt); |
360 | 85571bc7 | bellard | hw->nchannels = obt.nchannels; |
361 | 85571bc7 | bellard | |
362 | 85571bc7 | bellard | oss->nfrags = obt.nfrags; |
363 | 85571bc7 | bellard | oss->fragsize = obt.fragsize; |
364 | 85571bc7 | bellard | hw->bufsize = obt.nfrags * obt.fragsize; |
365 | 85571bc7 | bellard | |
366 | 85571bc7 | bellard | oss->mmapped = 0;
|
367 | 85571bc7 | bellard | if (conf.try_mmap) {
|
368 | 85571bc7 | bellard | oss->pcm_buf = mmap (0, hw->bufsize, PROT_READ | PROT_WRITE,
|
369 | 85571bc7 | bellard | MAP_SHARED, oss->fd, 0);
|
370 | 85571bc7 | bellard | if (oss->pcm_buf == MAP_FAILED) {
|
371 | 85571bc7 | bellard | dolog ("Failed to mmap OSS device\nReason: %s\n",
|
372 | 85571bc7 | bellard | errstr ()); |
373 | 44a095a7 | bellard | } else {
|
374 | 85571bc7 | bellard | int err;
|
375 | 85571bc7 | bellard | int trig = 0; |
376 | 85571bc7 | bellard | if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
377 | 85571bc7 | bellard | dolog ("SNDCTL_DSP_SETTRIGGER 0 failed\nReason: %s\n",
|
378 | 85571bc7 | bellard | errstr ()); |
379 | 85571bc7 | bellard | } |
380 | 44a095a7 | bellard | else {
|
381 | 44a095a7 | bellard | trig = PCM_ENABLE_OUTPUT; |
382 | 44a095a7 | bellard | if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
383 | 44a095a7 | bellard | dolog ("SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n"
|
384 | 44a095a7 | bellard | "Reason: %s\n", errstr ());
|
385 | 44a095a7 | bellard | } |
386 | 44a095a7 | bellard | else {
|
387 | 44a095a7 | bellard | oss->mmapped = 1;
|
388 | 44a095a7 | bellard | } |
389 | 85571bc7 | bellard | } |
390 | 85571bc7 | bellard | |
391 | 44a095a7 | bellard | if (!oss->mmapped) {
|
392 | 44a095a7 | bellard | err = munmap (oss->pcm_buf, hw->bufsize); |
393 | 44a095a7 | bellard | if (err) {
|
394 | 44a095a7 | bellard | dolog ("Failed to unmap OSS device\nReason: %s\n",
|
395 | 44a095a7 | bellard | errstr ()); |
396 | 44a095a7 | bellard | } |
397 | 85571bc7 | bellard | } |
398 | 85571bc7 | bellard | } |
399 | 85571bc7 | bellard | } |
400 | 85571bc7 | bellard | |
401 | 85571bc7 | bellard | if (!oss->mmapped) {
|
402 | 85571bc7 | bellard | oss->pcm_buf = qemu_mallocz (hw->bufsize); |
403 | 85571bc7 | bellard | if (!oss->pcm_buf) {
|
404 | 85571bc7 | bellard | close (oss->fd); |
405 | 85571bc7 | bellard | oss->fd = -1;
|
406 | 85571bc7 | bellard | return -1; |
407 | 85571bc7 | bellard | } |
408 | 85571bc7 | bellard | } |
409 | 85571bc7 | bellard | |
410 | 85571bc7 | bellard | return 0; |
411 | 85571bc7 | bellard | } |
412 | 85571bc7 | bellard | |
413 | 85571bc7 | bellard | static int oss_hw_ctl (HWVoice *hw, int cmd, ...) |
414 | 85571bc7 | bellard | { |
415 | 85571bc7 | bellard | int trig;
|
416 | 85571bc7 | bellard | OSSVoice *oss = (OSSVoice *) hw; |
417 | 85571bc7 | bellard | |
418 | 85571bc7 | bellard | if (!oss->mmapped)
|
419 | 85571bc7 | bellard | return 0; |
420 | 85571bc7 | bellard | |
421 | 85571bc7 | bellard | switch (cmd) {
|
422 | 85571bc7 | bellard | case VOICE_ENABLE:
|
423 | 85571bc7 | bellard | ldebug ("enabling voice\n");
|
424 | 85571bc7 | bellard | pcm_hw_clear (hw, oss->pcm_buf, hw->samples); |
425 | 85571bc7 | bellard | trig = PCM_ENABLE_OUTPUT; |
426 | 85571bc7 | bellard | if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
427 | 85571bc7 | bellard | dolog ("SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n"
|
428 | 85571bc7 | bellard | "Reason: %s\n", errstr ());
|
429 | 85571bc7 | bellard | return -1; |
430 | 85571bc7 | bellard | } |
431 | 85571bc7 | bellard | break;
|
432 | 85571bc7 | bellard | |
433 | 85571bc7 | bellard | case VOICE_DISABLE:
|
434 | 85571bc7 | bellard | ldebug ("disabling voice\n");
|
435 | 85571bc7 | bellard | trig = 0;
|
436 | 85571bc7 | bellard | if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
437 | 85571bc7 | bellard | dolog ("SNDCTL_DSP_SETTRIGGER 0 failed\nReason: %s\n",
|
438 | 85571bc7 | bellard | errstr ()); |
439 | 85571bc7 | bellard | return -1; |
440 | 85571bc7 | bellard | } |
441 | 85571bc7 | bellard | break;
|
442 | 85571bc7 | bellard | } |
443 | 85571bc7 | bellard | return 0; |
444 | 85571bc7 | bellard | } |
445 | 85571bc7 | bellard | |
446 | 85571bc7 | bellard | static void *oss_audio_init (void) |
447 | 85571bc7 | bellard | { |
448 | 85571bc7 | bellard | conf.fragsize = audio_get_conf_int (QC_OSS_FRAGSIZE, conf.fragsize); |
449 | 85571bc7 | bellard | conf.nfrags = audio_get_conf_int (QC_OSS_NFRAGS, conf.nfrags); |
450 | 85571bc7 | bellard | conf.try_mmap = audio_get_conf_int (QC_OSS_MMAP, conf.try_mmap); |
451 | 85571bc7 | bellard | conf.dspname = audio_get_conf_str (QC_OSS_DEV, conf.dspname); |
452 | 85571bc7 | bellard | return &conf;
|
453 | 85571bc7 | bellard | } |
454 | 85571bc7 | bellard | |
455 | 85571bc7 | bellard | static void oss_audio_fini (void *opaque) |
456 | 85571bc7 | bellard | { |
457 | 85571bc7 | bellard | } |
458 | 85571bc7 | bellard | |
459 | 85571bc7 | bellard | struct pcm_ops oss_pcm_ops = {
|
460 | 85571bc7 | bellard | oss_hw_init, |
461 | 85571bc7 | bellard | oss_hw_fini, |
462 | 85571bc7 | bellard | oss_hw_run, |
463 | 85571bc7 | bellard | oss_hw_write, |
464 | 85571bc7 | bellard | oss_hw_ctl |
465 | 85571bc7 | bellard | }; |
466 | 85571bc7 | bellard | |
467 | 85571bc7 | bellard | struct audio_output_driver oss_output_driver = {
|
468 | 85571bc7 | bellard | "oss",
|
469 | 85571bc7 | bellard | oss_audio_init, |
470 | 85571bc7 | bellard | oss_audio_fini, |
471 | 85571bc7 | bellard | &oss_pcm_ops, |
472 | 85571bc7 | bellard | 1,
|
473 | 85571bc7 | bellard | INT_MAX, |
474 | 85571bc7 | bellard | sizeof (OSSVoice)
|
475 | 85571bc7 | bellard | }; |