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1 | 1d14ffa9 | bellard | /*
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2 | 1d14ffa9 | bellard | * QEMU ALSA audio driver
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3 | 1d14ffa9 | bellard | *
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4 | 1d14ffa9 | bellard | * Copyright (c) 2005 Vassili Karpov (malc)
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5 | 1d14ffa9 | bellard | *
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6 | 1d14ffa9 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 1d14ffa9 | bellard | * of this software and associated documentation files (the "Software"), to deal
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8 | 1d14ffa9 | bellard | * in the Software without restriction, including without limitation the rights
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9 | 1d14ffa9 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 1d14ffa9 | bellard | * copies of the Software, and to permit persons to whom the Software is
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11 | 1d14ffa9 | bellard | * furnished to do so, subject to the following conditions:
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12 | 1d14ffa9 | bellard | *
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13 | 1d14ffa9 | bellard | * The above copyright notice and this permission notice shall be included in
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14 | 1d14ffa9 | bellard | * all copies or substantial portions of the Software.
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15 | 1d14ffa9 | bellard | *
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16 | 1d14ffa9 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 1d14ffa9 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 1d14ffa9 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 1d14ffa9 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 1d14ffa9 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 1d14ffa9 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 1d14ffa9 | bellard | * THE SOFTWARE.
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23 | 1d14ffa9 | bellard | */
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24 | 1d14ffa9 | bellard | #include <alsa/asoundlib.h> |
25 | 749bc4bf | pbrook | #include "qemu-common.h" |
26 | 8b438ba3 | malc | #include "qemu-char.h" |
27 | 749bc4bf | pbrook | #include "audio.h" |
28 | 1d14ffa9 | bellard | |
29 | 2637872b | malc | #if QEMU_GNUC_PREREQ(4, 3) |
30 | 2637872b | malc | #pragma GCC diagnostic ignored "-Waddress" |
31 | 2637872b | malc | #endif
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32 | 2637872b | malc | |
33 | 1d14ffa9 | bellard | #define AUDIO_CAP "alsa" |
34 | 1d14ffa9 | bellard | #include "audio_int.h" |
35 | 1d14ffa9 | bellard | |
36 | 8b438ba3 | malc | struct pollhlp {
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37 | 8b438ba3 | malc | snd_pcm_t *handle; |
38 | 8b438ba3 | malc | struct pollfd *pfds;
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39 | 8b438ba3 | malc | int count;
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40 | b4f763b8 | malc | int mask;
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41 | 8b438ba3 | malc | }; |
42 | 8b438ba3 | malc | |
43 | 1d14ffa9 | bellard | typedef struct ALSAVoiceOut { |
44 | 1d14ffa9 | bellard | HWVoiceOut hw; |
45 | 541ba4e7 | malc | int wpos;
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46 | 541ba4e7 | malc | int pending;
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47 | 1d14ffa9 | bellard | void *pcm_buf;
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48 | 1d14ffa9 | bellard | snd_pcm_t *handle; |
49 | 8b438ba3 | malc | struct pollhlp pollhlp;
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50 | 1d14ffa9 | bellard | } ALSAVoiceOut; |
51 | 1d14ffa9 | bellard | |
52 | 1d14ffa9 | bellard | typedef struct ALSAVoiceIn { |
53 | 1d14ffa9 | bellard | HWVoiceIn hw; |
54 | 1d14ffa9 | bellard | snd_pcm_t *handle; |
55 | 1d14ffa9 | bellard | void *pcm_buf;
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56 | 8b438ba3 | malc | struct pollhlp pollhlp;
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57 | 1d14ffa9 | bellard | } ALSAVoiceIn; |
58 | 1d14ffa9 | bellard | |
59 | 1d14ffa9 | bellard | static struct { |
60 | 1d14ffa9 | bellard | int size_in_usec_in;
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61 | 1d14ffa9 | bellard | int size_in_usec_out;
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62 | 1d14ffa9 | bellard | const char *pcm_name_in; |
63 | 1d14ffa9 | bellard | const char *pcm_name_out; |
64 | 1d14ffa9 | bellard | unsigned int buffer_size_in; |
65 | 1d14ffa9 | bellard | unsigned int period_size_in; |
66 | 1d14ffa9 | bellard | unsigned int buffer_size_out; |
67 | 1d14ffa9 | bellard | unsigned int period_size_out; |
68 | 1d14ffa9 | bellard | unsigned int threshold; |
69 | 1d14ffa9 | bellard | |
70 | fe8f096b | ths | int buffer_size_in_overridden;
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71 | fe8f096b | ths | int period_size_in_overridden;
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72 | 1d14ffa9 | bellard | |
73 | fe8f096b | ths | int buffer_size_out_overridden;
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74 | fe8f096b | ths | int period_size_out_overridden;
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75 | 571ec3d6 | bellard | int verbose;
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76 | 1d14ffa9 | bellard | } conf = { |
77 | de2ca4fb | malc | .buffer_size_out = 4096,
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78 | de2ca4fb | malc | .period_size_out = 1024,
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79 | 8ead62cf | bellard | .pcm_name_out = "default",
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80 | 8ead62cf | bellard | .pcm_name_in = "default",
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81 | 1d14ffa9 | bellard | }; |
82 | 1d14ffa9 | bellard | |
83 | 1d14ffa9 | bellard | struct alsa_params_req {
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84 | ca9cc28c | balrog | int freq;
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85 | ca9cc28c | balrog | snd_pcm_format_t fmt; |
86 | ca9cc28c | balrog | int nchannels;
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87 | 7a24c800 | malc | int size_in_usec;
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88 | 64333899 | malc | int override_mask;
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89 | 1d14ffa9 | bellard | unsigned int buffer_size; |
90 | 1d14ffa9 | bellard | unsigned int period_size; |
91 | 1d14ffa9 | bellard | }; |
92 | 1d14ffa9 | bellard | |
93 | 1d14ffa9 | bellard | struct alsa_params_obt {
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94 | 1d14ffa9 | bellard | int freq;
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95 | 1d14ffa9 | bellard | audfmt_e fmt; |
96 | ca9cc28c | balrog | int endianness;
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97 | 1d14ffa9 | bellard | int nchannels;
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98 | c0fe3827 | bellard | snd_pcm_uframes_t samples; |
99 | 1d14ffa9 | bellard | }; |
100 | 1d14ffa9 | bellard | |
101 | 1d14ffa9 | bellard | static void GCC_FMT_ATTR (2, 3) alsa_logerr (int err, const char *fmt, ...) |
102 | 1d14ffa9 | bellard | { |
103 | 1d14ffa9 | bellard | va_list ap; |
104 | 1d14ffa9 | bellard | |
105 | 1d14ffa9 | bellard | va_start (ap, fmt); |
106 | 1d14ffa9 | bellard | AUD_vlog (AUDIO_CAP, fmt, ap); |
107 | 1d14ffa9 | bellard | va_end (ap); |
108 | 1d14ffa9 | bellard | |
109 | 1d14ffa9 | bellard | AUD_log (AUDIO_CAP, "Reason: %s\n", snd_strerror (err));
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110 | 1d14ffa9 | bellard | } |
111 | 1d14ffa9 | bellard | |
112 | 1d14ffa9 | bellard | static void GCC_FMT_ATTR (3, 4) alsa_logerr2 ( |
113 | 1d14ffa9 | bellard | int err,
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114 | 1d14ffa9 | bellard | const char *typ, |
115 | 1d14ffa9 | bellard | const char *fmt, |
116 | 1d14ffa9 | bellard | ... |
117 | 1d14ffa9 | bellard | ) |
118 | 1d14ffa9 | bellard | { |
119 | 1d14ffa9 | bellard | va_list ap; |
120 | 1d14ffa9 | bellard | |
121 | c0fe3827 | bellard | AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ);
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122 | 1d14ffa9 | bellard | |
123 | 1d14ffa9 | bellard | va_start (ap, fmt); |
124 | 1d14ffa9 | bellard | AUD_vlog (AUDIO_CAP, fmt, ap); |
125 | 1d14ffa9 | bellard | va_end (ap); |
126 | 1d14ffa9 | bellard | |
127 | 1d14ffa9 | bellard | AUD_log (AUDIO_CAP, "Reason: %s\n", snd_strerror (err));
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128 | 1d14ffa9 | bellard | } |
129 | 1d14ffa9 | bellard | |
130 | 6ebfda13 | malc | static void alsa_fini_poll (struct pollhlp *hlp) |
131 | 6ebfda13 | malc | { |
132 | 6ebfda13 | malc | int i;
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133 | 6ebfda13 | malc | struct pollfd *pfds = hlp->pfds;
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134 | 6ebfda13 | malc | |
135 | 6ebfda13 | malc | if (pfds) {
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136 | 6ebfda13 | malc | for (i = 0; i < hlp->count; ++i) { |
137 | 6ebfda13 | malc | qemu_set_fd_handler (pfds[i].fd, NULL, NULL, NULL); |
138 | 6ebfda13 | malc | } |
139 | 6ebfda13 | malc | qemu_free (pfds); |
140 | 6ebfda13 | malc | } |
141 | 6ebfda13 | malc | hlp->pfds = NULL;
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142 | 6ebfda13 | malc | hlp->count = 0;
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143 | 6ebfda13 | malc | hlp->handle = NULL;
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144 | 6ebfda13 | malc | } |
145 | 6ebfda13 | malc | |
146 | 6ebfda13 | malc | static void alsa_anal_close1 (snd_pcm_t **handlep) |
147 | 1d14ffa9 | bellard | { |
148 | 1d14ffa9 | bellard | int err = snd_pcm_close (*handlep);
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149 | 1d14ffa9 | bellard | if (err) {
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150 | 1d14ffa9 | bellard | alsa_logerr (err, "Failed to close PCM handle %p\n", *handlep);
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151 | 1d14ffa9 | bellard | } |
152 | 1d14ffa9 | bellard | *handlep = NULL;
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153 | 1d14ffa9 | bellard | } |
154 | 1d14ffa9 | bellard | |
155 | 6ebfda13 | malc | static void alsa_anal_close (snd_pcm_t **handlep, struct pollhlp *hlp) |
156 | 6ebfda13 | malc | { |
157 | 6ebfda13 | malc | alsa_fini_poll (hlp); |
158 | 6ebfda13 | malc | alsa_anal_close1 (handlep); |
159 | 6ebfda13 | malc | } |
160 | 6ebfda13 | malc | |
161 | 8b438ba3 | malc | static int alsa_recover (snd_pcm_t *handle) |
162 | 8b438ba3 | malc | { |
163 | 8b438ba3 | malc | int err = snd_pcm_prepare (handle);
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164 | 8b438ba3 | malc | if (err < 0) { |
165 | 8b438ba3 | malc | alsa_logerr (err, "Failed to prepare handle %p\n", handle);
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166 | 8b438ba3 | malc | return -1; |
167 | 8b438ba3 | malc | } |
168 | 8b438ba3 | malc | return 0; |
169 | 8b438ba3 | malc | } |
170 | 8b438ba3 | malc | |
171 | 8b438ba3 | malc | static int alsa_resume (snd_pcm_t *handle) |
172 | 8b438ba3 | malc | { |
173 | 8b438ba3 | malc | int err = snd_pcm_resume (handle);
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174 | 8b438ba3 | malc | if (err < 0) { |
175 | 8b438ba3 | malc | alsa_logerr (err, "Failed to resume handle %p\n", handle);
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176 | 8b438ba3 | malc | return -1; |
177 | 8b438ba3 | malc | } |
178 | 8b438ba3 | malc | return 0; |
179 | 8b438ba3 | malc | } |
180 | 8b438ba3 | malc | |
181 | 8b438ba3 | malc | static void alsa_poll_handler (void *opaque) |
182 | 8b438ba3 | malc | { |
183 | 8b438ba3 | malc | int err, count;
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184 | 8b438ba3 | malc | snd_pcm_state_t state; |
185 | 8b438ba3 | malc | struct pollhlp *hlp = opaque;
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186 | 8b438ba3 | malc | unsigned short revents; |
187 | 8b438ba3 | malc | |
188 | 8b438ba3 | malc | count = poll (hlp->pfds, hlp->count, 0);
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189 | 8b438ba3 | malc | if (count < 0) { |
190 | 8b438ba3 | malc | dolog ("alsa_poll_handler: poll %s\n", strerror (errno));
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191 | 8b438ba3 | malc | return;
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192 | 8b438ba3 | malc | } |
193 | 8b438ba3 | malc | |
194 | 8b438ba3 | malc | if (!count) {
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195 | 8b438ba3 | malc | return;
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196 | 8b438ba3 | malc | } |
197 | 8b438ba3 | malc | |
198 | 8b438ba3 | malc | /* XXX: ALSA example uses initial count, not the one returned by
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199 | 8b438ba3 | malc | poll, correct? */
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200 | 8b438ba3 | malc | err = snd_pcm_poll_descriptors_revents (hlp->handle, hlp->pfds, |
201 | 8b438ba3 | malc | hlp->count, &revents); |
202 | 8b438ba3 | malc | if (err < 0) { |
203 | 8b438ba3 | malc | alsa_logerr (err, "snd_pcm_poll_descriptors_revents");
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204 | 8b438ba3 | malc | return;
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205 | 8b438ba3 | malc | } |
206 | 8b438ba3 | malc | |
207 | b4f763b8 | malc | if (!(revents & hlp->mask)) {
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208 | 8b438ba3 | malc | if (conf.verbose) {
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209 | 8b438ba3 | malc | dolog ("revents = %d\n", revents);
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210 | 8b438ba3 | malc | } |
211 | 8b438ba3 | malc | return;
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212 | 8b438ba3 | malc | } |
213 | 8b438ba3 | malc | |
214 | 8b438ba3 | malc | state = snd_pcm_state (hlp->handle); |
215 | 8b438ba3 | malc | switch (state) {
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216 | d9812b03 | malc | case SND_PCM_STATE_SETUP:
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217 | d9812b03 | malc | alsa_recover (hlp->handle); |
218 | d9812b03 | malc | break;
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219 | d9812b03 | malc | |
220 | 8b438ba3 | malc | case SND_PCM_STATE_XRUN:
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221 | 8b438ba3 | malc | alsa_recover (hlp->handle); |
222 | 8b438ba3 | malc | break;
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223 | 8b438ba3 | malc | |
224 | 8b438ba3 | malc | case SND_PCM_STATE_SUSPENDED:
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225 | 8b438ba3 | malc | alsa_resume (hlp->handle); |
226 | 8b438ba3 | malc | break;
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227 | 8b438ba3 | malc | |
228 | 8b438ba3 | malc | case SND_PCM_STATE_PREPARED:
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229 | 8b438ba3 | malc | audio_run ("alsa run (prepared)");
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230 | 8b438ba3 | malc | break;
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231 | 8b438ba3 | malc | |
232 | 8b438ba3 | malc | case SND_PCM_STATE_RUNNING:
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233 | 8b438ba3 | malc | audio_run ("alsa run (running)");
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234 | 8b438ba3 | malc | break;
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235 | 8b438ba3 | malc | |
236 | 8b438ba3 | malc | default:
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237 | 8b438ba3 | malc | dolog ("Unexpected state %d\n", state);
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238 | 8b438ba3 | malc | } |
239 | 8b438ba3 | malc | } |
240 | 8b438ba3 | malc | |
241 | b4f763b8 | malc | static int alsa_poll_helper (snd_pcm_t *handle, struct pollhlp *hlp, int mask) |
242 | 8b438ba3 | malc | { |
243 | 8b438ba3 | malc | int i, count, err;
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244 | 8b438ba3 | malc | struct pollfd *pfds;
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245 | 8b438ba3 | malc | |
246 | 8b438ba3 | malc | count = snd_pcm_poll_descriptors_count (handle); |
247 | 8b438ba3 | malc | if (count <= 0) { |
248 | 8b438ba3 | malc | dolog ("Could not initialize poll mode\n"
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249 | 8b438ba3 | malc | "Invalid number of poll descriptors %d\n", count);
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250 | 8b438ba3 | malc | return -1; |
251 | 8b438ba3 | malc | } |
252 | 8b438ba3 | malc | |
253 | 8b438ba3 | malc | pfds = audio_calloc ("alsa_poll_helper", count, sizeof (*pfds)); |
254 | 8b438ba3 | malc | if (!pfds) {
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255 | 8b438ba3 | malc | dolog ("Could not initialize poll mode\n");
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256 | 8b438ba3 | malc | return -1; |
257 | 8b438ba3 | malc | } |
258 | 8b438ba3 | malc | |
259 | 8b438ba3 | malc | err = snd_pcm_poll_descriptors (handle, pfds, count); |
260 | 8b438ba3 | malc | if (err < 0) { |
261 | 8b438ba3 | malc | alsa_logerr (err, "Could not initialize poll mode\n"
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262 | 8b438ba3 | malc | "Could not obtain poll descriptors\n");
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263 | 8b438ba3 | malc | qemu_free (pfds); |
264 | 8b438ba3 | malc | return -1; |
265 | 8b438ba3 | malc | } |
266 | 8b438ba3 | malc | |
267 | 8b438ba3 | malc | for (i = 0; i < count; ++i) { |
268 | 8b438ba3 | malc | if (pfds[i].events & POLLIN) {
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269 | 8b438ba3 | malc | err = qemu_set_fd_handler (pfds[i].fd, alsa_poll_handler, |
270 | 8b438ba3 | malc | NULL, hlp);
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271 | 8b438ba3 | malc | } |
272 | 8b438ba3 | malc | if (pfds[i].events & POLLOUT) {
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273 | 8b438ba3 | malc | if (conf.verbose) {
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274 | 8b438ba3 | malc | dolog ("POLLOUT %d %d\n", i, pfds[i].fd);
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275 | 8b438ba3 | malc | } |
276 | 8b438ba3 | malc | err = qemu_set_fd_handler (pfds[i].fd, NULL,
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277 | 8b438ba3 | malc | alsa_poll_handler, hlp); |
278 | 8b438ba3 | malc | } |
279 | 8b438ba3 | malc | if (conf.verbose) {
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280 | 8b438ba3 | malc | dolog ("Set handler events=%#x index=%d fd=%d err=%d\n",
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281 | 8b438ba3 | malc | pfds[i].events, i, pfds[i].fd, err); |
282 | 8b438ba3 | malc | } |
283 | 8b438ba3 | malc | |
284 | 8b438ba3 | malc | if (err) {
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285 | 8b438ba3 | malc | dolog ("Failed to set handler events=%#x index=%d fd=%d err=%d\n",
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286 | 8b438ba3 | malc | pfds[i].events, i, pfds[i].fd, err); |
287 | 8b438ba3 | malc | |
288 | 8b438ba3 | malc | while (i--) {
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289 | 8b438ba3 | malc | qemu_set_fd_handler (pfds[i].fd, NULL, NULL, NULL); |
290 | 8b438ba3 | malc | } |
291 | 8b438ba3 | malc | qemu_free (pfds); |
292 | 8b438ba3 | malc | return -1; |
293 | 8b438ba3 | malc | } |
294 | 8b438ba3 | malc | } |
295 | 8b438ba3 | malc | hlp->pfds = pfds; |
296 | 8b438ba3 | malc | hlp->count = count; |
297 | 8b438ba3 | malc | hlp->handle = handle; |
298 | b4f763b8 | malc | hlp->mask = mask; |
299 | 8b438ba3 | malc | return 0; |
300 | 8b438ba3 | malc | } |
301 | 8b438ba3 | malc | |
302 | 8b438ba3 | malc | static int alsa_poll_out (HWVoiceOut *hw) |
303 | 8b438ba3 | malc | { |
304 | 8b438ba3 | malc | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; |
305 | 8b438ba3 | malc | |
306 | b4f763b8 | malc | return alsa_poll_helper (alsa->handle, &alsa->pollhlp, POLLOUT);
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307 | 8b438ba3 | malc | } |
308 | 8b438ba3 | malc | |
309 | 8b438ba3 | malc | static int alsa_poll_in (HWVoiceIn *hw) |
310 | 8b438ba3 | malc | { |
311 | 8b438ba3 | malc | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; |
312 | 8b438ba3 | malc | |
313 | b4f763b8 | malc | return alsa_poll_helper (alsa->handle, &alsa->pollhlp, POLLIN);
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314 | 8b438ba3 | malc | } |
315 | 8b438ba3 | malc | |
316 | 1d14ffa9 | bellard | static int alsa_write (SWVoiceOut *sw, void *buf, int len) |
317 | 1d14ffa9 | bellard | { |
318 | 1d14ffa9 | bellard | return audio_pcm_sw_write (sw, buf, len);
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319 | 1d14ffa9 | bellard | } |
320 | 1d14ffa9 | bellard | |
321 | ca9cc28c | balrog | static snd_pcm_format_t aud_to_alsafmt (audfmt_e fmt)
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322 | 1d14ffa9 | bellard | { |
323 | 1d14ffa9 | bellard | switch (fmt) {
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324 | 1d14ffa9 | bellard | case AUD_FMT_S8:
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325 | 1d14ffa9 | bellard | return SND_PCM_FORMAT_S8;
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326 | 1d14ffa9 | bellard | |
327 | 1d14ffa9 | bellard | case AUD_FMT_U8:
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328 | 1d14ffa9 | bellard | return SND_PCM_FORMAT_U8;
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329 | 1d14ffa9 | bellard | |
330 | 1d14ffa9 | bellard | case AUD_FMT_S16:
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331 | 1d14ffa9 | bellard | return SND_PCM_FORMAT_S16_LE;
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332 | 1d14ffa9 | bellard | |
333 | 1d14ffa9 | bellard | case AUD_FMT_U16:
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334 | 1d14ffa9 | bellard | return SND_PCM_FORMAT_U16_LE;
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335 | 1d14ffa9 | bellard | |
336 | f941aa25 | ths | case AUD_FMT_S32:
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337 | f941aa25 | ths | return SND_PCM_FORMAT_S32_LE;
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338 | f941aa25 | ths | |
339 | f941aa25 | ths | case AUD_FMT_U32:
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340 | f941aa25 | ths | return SND_PCM_FORMAT_U32_LE;
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341 | f941aa25 | ths | |
342 | 1d14ffa9 | bellard | default:
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343 | 1d14ffa9 | bellard | dolog ("Internal logic error: Bad audio format %d\n", fmt);
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344 | 1d14ffa9 | bellard | #ifdef DEBUG_AUDIO
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345 | 1d14ffa9 | bellard | abort (); |
346 | 1d14ffa9 | bellard | #endif
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347 | 1d14ffa9 | bellard | return SND_PCM_FORMAT_U8;
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348 | 1d14ffa9 | bellard | } |
349 | 1d14ffa9 | bellard | } |
350 | 1d14ffa9 | bellard | |
351 | ca9cc28c | balrog | static int alsa_to_audfmt (snd_pcm_format_t alsafmt, audfmt_e *fmt, |
352 | ca9cc28c | balrog | int *endianness)
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353 | 1d14ffa9 | bellard | { |
354 | 1d14ffa9 | bellard | switch (alsafmt) {
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355 | 1d14ffa9 | bellard | case SND_PCM_FORMAT_S8:
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356 | 1d14ffa9 | bellard | *endianness = 0;
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357 | 1d14ffa9 | bellard | *fmt = AUD_FMT_S8; |
358 | 1d14ffa9 | bellard | break;
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359 | 1d14ffa9 | bellard | |
360 | 1d14ffa9 | bellard | case SND_PCM_FORMAT_U8:
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361 | 1d14ffa9 | bellard | *endianness = 0;
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362 | 1d14ffa9 | bellard | *fmt = AUD_FMT_U8; |
363 | 1d14ffa9 | bellard | break;
|
364 | 1d14ffa9 | bellard | |
365 | 1d14ffa9 | bellard | case SND_PCM_FORMAT_S16_LE:
|
366 | 1d14ffa9 | bellard | *endianness = 0;
|
367 | 1d14ffa9 | bellard | *fmt = AUD_FMT_S16; |
368 | 1d14ffa9 | bellard | break;
|
369 | 1d14ffa9 | bellard | |
370 | 1d14ffa9 | bellard | case SND_PCM_FORMAT_U16_LE:
|
371 | 1d14ffa9 | bellard | *endianness = 0;
|
372 | 1d14ffa9 | bellard | *fmt = AUD_FMT_U16; |
373 | 1d14ffa9 | bellard | break;
|
374 | 1d14ffa9 | bellard | |
375 | 1d14ffa9 | bellard | case SND_PCM_FORMAT_S16_BE:
|
376 | 1d14ffa9 | bellard | *endianness = 1;
|
377 | 1d14ffa9 | bellard | *fmt = AUD_FMT_S16; |
378 | 1d14ffa9 | bellard | break;
|
379 | 1d14ffa9 | bellard | |
380 | 1d14ffa9 | bellard | case SND_PCM_FORMAT_U16_BE:
|
381 | 1d14ffa9 | bellard | *endianness = 1;
|
382 | 1d14ffa9 | bellard | *fmt = AUD_FMT_U16; |
383 | 1d14ffa9 | bellard | break;
|
384 | 1d14ffa9 | bellard | |
385 | f941aa25 | ths | case SND_PCM_FORMAT_S32_LE:
|
386 | f941aa25 | ths | *endianness = 0;
|
387 | f941aa25 | ths | *fmt = AUD_FMT_S32; |
388 | f941aa25 | ths | break;
|
389 | f941aa25 | ths | |
390 | f941aa25 | ths | case SND_PCM_FORMAT_U32_LE:
|
391 | f941aa25 | ths | *endianness = 0;
|
392 | f941aa25 | ths | *fmt = AUD_FMT_U32; |
393 | f941aa25 | ths | break;
|
394 | f941aa25 | ths | |
395 | f941aa25 | ths | case SND_PCM_FORMAT_S32_BE:
|
396 | f941aa25 | ths | *endianness = 1;
|
397 | f941aa25 | ths | *fmt = AUD_FMT_S32; |
398 | f941aa25 | ths | break;
|
399 | f941aa25 | ths | |
400 | f941aa25 | ths | case SND_PCM_FORMAT_U32_BE:
|
401 | f941aa25 | ths | *endianness = 1;
|
402 | f941aa25 | ths | *fmt = AUD_FMT_U32; |
403 | f941aa25 | ths | break;
|
404 | f941aa25 | ths | |
405 | 1d14ffa9 | bellard | default:
|
406 | 1d14ffa9 | bellard | dolog ("Unrecognized audio format %d\n", alsafmt);
|
407 | 1d14ffa9 | bellard | return -1; |
408 | 1d14ffa9 | bellard | } |
409 | 1d14ffa9 | bellard | |
410 | 1d14ffa9 | bellard | return 0; |
411 | 1d14ffa9 | bellard | } |
412 | 1d14ffa9 | bellard | |
413 | 1d14ffa9 | bellard | static void alsa_dump_info (struct alsa_params_req *req, |
414 | 8bb414d2 | malc | struct alsa_params_obt *obt,
|
415 | 8bb414d2 | malc | snd_pcm_format_t obtfmt) |
416 | 1d14ffa9 | bellard | { |
417 | 1d14ffa9 | bellard | dolog ("parameter | requested value | obtained value\n");
|
418 | 8bb414d2 | malc | dolog ("format | %10d | %10d\n", req->fmt, obtfmt);
|
419 | 1d14ffa9 | bellard | dolog ("channels | %10d | %10d\n",
|
420 | 1d14ffa9 | bellard | req->nchannels, obt->nchannels); |
421 | 1d14ffa9 | bellard | dolog ("frequency | %10d | %10d\n", req->freq, obt->freq);
|
422 | 1d14ffa9 | bellard | dolog ("============================================\n");
|
423 | 1d14ffa9 | bellard | dolog ("requested: buffer size %d period size %d\n",
|
424 | 1d14ffa9 | bellard | req->buffer_size, req->period_size); |
425 | c0fe3827 | bellard | dolog ("obtained: samples %ld\n", obt->samples);
|
426 | 1d14ffa9 | bellard | } |
427 | 1d14ffa9 | bellard | |
428 | 1d14ffa9 | bellard | static void alsa_set_threshold (snd_pcm_t *handle, snd_pcm_uframes_t threshold) |
429 | 1d14ffa9 | bellard | { |
430 | 1d14ffa9 | bellard | int err;
|
431 | 1d14ffa9 | bellard | snd_pcm_sw_params_t *sw_params; |
432 | 1d14ffa9 | bellard | |
433 | 1d14ffa9 | bellard | snd_pcm_sw_params_alloca (&sw_params); |
434 | 1d14ffa9 | bellard | |
435 | 1d14ffa9 | bellard | err = snd_pcm_sw_params_current (handle, sw_params); |
436 | 1d14ffa9 | bellard | if (err < 0) { |
437 | c0fe3827 | bellard | dolog ("Could not fully initialize DAC\n");
|
438 | 1d14ffa9 | bellard | alsa_logerr (err, "Failed to get current software parameters\n");
|
439 | 1d14ffa9 | bellard | return;
|
440 | 1d14ffa9 | bellard | } |
441 | 1d14ffa9 | bellard | |
442 | 1d14ffa9 | bellard | err = snd_pcm_sw_params_set_start_threshold (handle, sw_params, threshold); |
443 | 1d14ffa9 | bellard | if (err < 0) { |
444 | c0fe3827 | bellard | dolog ("Could not fully initialize DAC\n");
|
445 | 1d14ffa9 | bellard | alsa_logerr (err, "Failed to set software threshold to %ld\n",
|
446 | 1d14ffa9 | bellard | threshold); |
447 | 1d14ffa9 | bellard | return;
|
448 | 1d14ffa9 | bellard | } |
449 | 1d14ffa9 | bellard | |
450 | 1d14ffa9 | bellard | err = snd_pcm_sw_params (handle, sw_params); |
451 | 1d14ffa9 | bellard | if (err < 0) { |
452 | c0fe3827 | bellard | dolog ("Could not fully initialize DAC\n");
|
453 | 1d14ffa9 | bellard | alsa_logerr (err, "Failed to set software parameters\n");
|
454 | 1d14ffa9 | bellard | return;
|
455 | 1d14ffa9 | bellard | } |
456 | 1d14ffa9 | bellard | } |
457 | 1d14ffa9 | bellard | |
458 | 1d14ffa9 | bellard | static int alsa_open (int in, struct alsa_params_req *req, |
459 | 1d14ffa9 | bellard | struct alsa_params_obt *obt, snd_pcm_t **handlep)
|
460 | 1d14ffa9 | bellard | { |
461 | 1d14ffa9 | bellard | snd_pcm_t *handle; |
462 | 1d14ffa9 | bellard | snd_pcm_hw_params_t *hw_params; |
463 | 60fe76f3 | ths | int err;
|
464 | 7a24c800 | malc | int size_in_usec;
|
465 | 60fe76f3 | ths | unsigned int freq, nchannels; |
466 | 1d14ffa9 | bellard | const char *pcm_name = in ? conf.pcm_name_in : conf.pcm_name_out; |
467 | 1d14ffa9 | bellard | snd_pcm_uframes_t obt_buffer_size; |
468 | 1d14ffa9 | bellard | const char *typ = in ? "ADC" : "DAC"; |
469 | ca9cc28c | balrog | snd_pcm_format_t obtfmt; |
470 | 1d14ffa9 | bellard | |
471 | 1d14ffa9 | bellard | freq = req->freq; |
472 | 1d14ffa9 | bellard | nchannels = req->nchannels; |
473 | 7a24c800 | malc | size_in_usec = req->size_in_usec; |
474 | 1d14ffa9 | bellard | |
475 | 1d14ffa9 | bellard | snd_pcm_hw_params_alloca (&hw_params); |
476 | 1d14ffa9 | bellard | |
477 | 1d14ffa9 | bellard | err = snd_pcm_open ( |
478 | 1d14ffa9 | bellard | &handle, |
479 | 1d14ffa9 | bellard | pcm_name, |
480 | 1d14ffa9 | bellard | in ? SND_PCM_STREAM_CAPTURE : SND_PCM_STREAM_PLAYBACK, |
481 | 1d14ffa9 | bellard | SND_PCM_NONBLOCK |
482 | 1d14ffa9 | bellard | ); |
483 | 1d14ffa9 | bellard | if (err < 0) { |
484 | 1d14ffa9 | bellard | alsa_logerr2 (err, typ, "Failed to open `%s':\n", pcm_name);
|
485 | 1d14ffa9 | bellard | return -1; |
486 | 1d14ffa9 | bellard | } |
487 | 1d14ffa9 | bellard | |
488 | 1d14ffa9 | bellard | err = snd_pcm_hw_params_any (handle, hw_params); |
489 | 1d14ffa9 | bellard | if (err < 0) { |
490 | 1d14ffa9 | bellard | alsa_logerr2 (err, typ, "Failed to initialize hardware parameters\n");
|
491 | 1d14ffa9 | bellard | goto err;
|
492 | 1d14ffa9 | bellard | } |
493 | 1d14ffa9 | bellard | |
494 | 1d14ffa9 | bellard | err = snd_pcm_hw_params_set_access ( |
495 | 1d14ffa9 | bellard | handle, |
496 | 1d14ffa9 | bellard | hw_params, |
497 | 1d14ffa9 | bellard | SND_PCM_ACCESS_RW_INTERLEAVED |
498 | 1d14ffa9 | bellard | ); |
499 | 1d14ffa9 | bellard | if (err < 0) { |
500 | 1d14ffa9 | bellard | alsa_logerr2 (err, typ, "Failed to set access type\n");
|
501 | 1d14ffa9 | bellard | goto err;
|
502 | 1d14ffa9 | bellard | } |
503 | 1d14ffa9 | bellard | |
504 | 1d14ffa9 | bellard | err = snd_pcm_hw_params_set_format (handle, hw_params, req->fmt); |
505 | ca9cc28c | balrog | if (err < 0 && conf.verbose) { |
506 | 1d14ffa9 | bellard | alsa_logerr2 (err, typ, "Failed to set format %d\n", req->fmt);
|
507 | 1d14ffa9 | bellard | } |
508 | 1d14ffa9 | bellard | |
509 | 1d14ffa9 | bellard | err = snd_pcm_hw_params_set_rate_near (handle, hw_params, &freq, 0);
|
510 | 1d14ffa9 | bellard | if (err < 0) { |
511 | 1d14ffa9 | bellard | alsa_logerr2 (err, typ, "Failed to set frequency %d\n", req->freq);
|
512 | 1d14ffa9 | bellard | goto err;
|
513 | 1d14ffa9 | bellard | } |
514 | 1d14ffa9 | bellard | |
515 | 1d14ffa9 | bellard | err = snd_pcm_hw_params_set_channels_near ( |
516 | 1d14ffa9 | bellard | handle, |
517 | 1d14ffa9 | bellard | hw_params, |
518 | 1d14ffa9 | bellard | &nchannels |
519 | 1d14ffa9 | bellard | ); |
520 | 1d14ffa9 | bellard | if (err < 0) { |
521 | 1d14ffa9 | bellard | alsa_logerr2 (err, typ, "Failed to set number of channels %d\n",
|
522 | 1d14ffa9 | bellard | req->nchannels); |
523 | 1d14ffa9 | bellard | goto err;
|
524 | 1d14ffa9 | bellard | } |
525 | 1d14ffa9 | bellard | |
526 | 1d14ffa9 | bellard | if (nchannels != 1 && nchannels != 2) { |
527 | 1d14ffa9 | bellard | alsa_logerr2 (err, typ, |
528 | 1d14ffa9 | bellard | "Can not handle obtained number of channels %d\n",
|
529 | 1d14ffa9 | bellard | nchannels); |
530 | 1d14ffa9 | bellard | goto err;
|
531 | 1d14ffa9 | bellard | } |
532 | 1d14ffa9 | bellard | |
533 | 7a24c800 | malc | if (req->buffer_size) {
|
534 | f3b52983 | malc | unsigned long obt; |
535 | f3b52983 | malc | |
536 | 7a24c800 | malc | if (size_in_usec) {
|
537 | 7a24c800 | malc | int dir = 0; |
538 | 7a24c800 | malc | unsigned int btime = req->buffer_size; |
539 | 1d14ffa9 | bellard | |
540 | 1d14ffa9 | bellard | err = snd_pcm_hw_params_set_buffer_time_near ( |
541 | 1d14ffa9 | bellard | handle, |
542 | 1d14ffa9 | bellard | hw_params, |
543 | 7a24c800 | malc | &btime, |
544 | 7a24c800 | malc | &dir |
545 | c0fe3827 | bellard | ); |
546 | f3b52983 | malc | obt = btime; |
547 | 1d14ffa9 | bellard | } |
548 | 1d14ffa9 | bellard | else {
|
549 | 7a24c800 | malc | snd_pcm_uframes_t bsize = req->buffer_size; |
550 | 1d14ffa9 | bellard | |
551 | 7a24c800 | malc | err = snd_pcm_hw_params_set_buffer_size_near ( |
552 | 7a24c800 | malc | handle, |
553 | 7a24c800 | malc | hw_params, |
554 | 7a24c800 | malc | &bsize |
555 | 7a24c800 | malc | ); |
556 | f3b52983 | malc | obt = bsize; |
557 | 7a24c800 | malc | } |
558 | 7a24c800 | malc | if (err < 0) { |
559 | 7a24c800 | malc | alsa_logerr2 (err, typ, "Failed to set buffer %s to %d\n",
|
560 | 7a24c800 | malc | size_in_usec ? "time" : "size", req->buffer_size); |
561 | 7a24c800 | malc | goto err;
|
562 | 7a24c800 | malc | } |
563 | f3b52983 | malc | |
564 | 64333899 | malc | if ((req->override_mask & 2) && (obt - req->buffer_size)) |
565 | f3b52983 | malc | dolog ("Requested buffer %s %u was rejected, using %lu\n",
|
566 | f3b52983 | malc | size_in_usec ? "time" : "size", req->buffer_size, obt); |
567 | 7a24c800 | malc | } |
568 | 7a24c800 | malc | |
569 | 7a24c800 | malc | if (req->period_size) {
|
570 | f3b52983 | malc | unsigned long obt; |
571 | f3b52983 | malc | |
572 | 7a24c800 | malc | if (size_in_usec) {
|
573 | 7a24c800 | malc | int dir = 0; |
574 | 7a24c800 | malc | unsigned int ptime = req->period_size; |
575 | 1d14ffa9 | bellard | |
576 | 7a24c800 | malc | err = snd_pcm_hw_params_set_period_time_near ( |
577 | 7a24c800 | malc | handle, |
578 | 1d14ffa9 | bellard | hw_params, |
579 | 7a24c800 | malc | &ptime, |
580 | 7a24c800 | malc | &dir |
581 | 1d14ffa9 | bellard | ); |
582 | f3b52983 | malc | obt = ptime; |
583 | 7a24c800 | malc | } |
584 | 7a24c800 | malc | else {
|
585 | a7bb29ba | malc | int dir = 0; |
586 | 7a24c800 | malc | snd_pcm_uframes_t psize = req->period_size; |
587 | 1d14ffa9 | bellard | |
588 | a7bb29ba | malc | err = snd_pcm_hw_params_set_period_size_near ( |
589 | 1d14ffa9 | bellard | handle, |
590 | 1d14ffa9 | bellard | hw_params, |
591 | a7bb29ba | malc | &psize, |
592 | a7bb29ba | malc | &dir |
593 | 1d14ffa9 | bellard | ); |
594 | f3b52983 | malc | obt = psize; |
595 | 1d14ffa9 | bellard | } |
596 | 7a24c800 | malc | |
597 | 7a24c800 | malc | if (err < 0) { |
598 | 7a24c800 | malc | alsa_logerr2 (err, typ, "Failed to set period %s to %d\n",
|
599 | 7a24c800 | malc | size_in_usec ? "time" : "size", req->period_size); |
600 | 7a24c800 | malc | goto err;
|
601 | 7a24c800 | malc | } |
602 | f3b52983 | malc | |
603 | 541ba4e7 | malc | if (((req->override_mask & 1) && (obt - req->period_size))) |
604 | f3b52983 | malc | dolog ("Requested period %s %u was rejected, using %lu\n",
|
605 | f3b52983 | malc | size_in_usec ? "time" : "size", req->period_size, obt); |
606 | 1d14ffa9 | bellard | } |
607 | 1d14ffa9 | bellard | |
608 | 1d14ffa9 | bellard | err = snd_pcm_hw_params (handle, hw_params); |
609 | 1d14ffa9 | bellard | if (err < 0) { |
610 | 1d14ffa9 | bellard | alsa_logerr2 (err, typ, "Failed to apply audio parameters\n");
|
611 | 1d14ffa9 | bellard | goto err;
|
612 | 1d14ffa9 | bellard | } |
613 | 1d14ffa9 | bellard | |
614 | 1d14ffa9 | bellard | err = snd_pcm_hw_params_get_buffer_size (hw_params, &obt_buffer_size); |
615 | 1d14ffa9 | bellard | if (err < 0) { |
616 | 1d14ffa9 | bellard | alsa_logerr2 (err, typ, "Failed to get buffer size\n");
|
617 | 1d14ffa9 | bellard | goto err;
|
618 | 1d14ffa9 | bellard | } |
619 | 1d14ffa9 | bellard | |
620 | ca9cc28c | balrog | err = snd_pcm_hw_params_get_format (hw_params, &obtfmt); |
621 | ca9cc28c | balrog | if (err < 0) { |
622 | ca9cc28c | balrog | alsa_logerr2 (err, typ, "Failed to get format\n");
|
623 | ca9cc28c | balrog | goto err;
|
624 | ca9cc28c | balrog | } |
625 | ca9cc28c | balrog | |
626 | ca9cc28c | balrog | if (alsa_to_audfmt (obtfmt, &obt->fmt, &obt->endianness)) {
|
627 | ca9cc28c | balrog | dolog ("Invalid format was returned %d\n", obtfmt);
|
628 | ca9cc28c | balrog | goto err;
|
629 | ca9cc28c | balrog | } |
630 | ca9cc28c | balrog | |
631 | 1d14ffa9 | bellard | err = snd_pcm_prepare (handle); |
632 | 1d14ffa9 | bellard | if (err < 0) { |
633 | c0fe3827 | bellard | alsa_logerr2 (err, typ, "Could not prepare handle %p\n", handle);
|
634 | 1d14ffa9 | bellard | goto err;
|
635 | 1d14ffa9 | bellard | } |
636 | 1d14ffa9 | bellard | |
637 | 1d14ffa9 | bellard | if (!in && conf.threshold) {
|
638 | 1d14ffa9 | bellard | snd_pcm_uframes_t threshold; |
639 | 1d14ffa9 | bellard | int bytes_per_sec;
|
640 | 1d14ffa9 | bellard | |
641 | ca9cc28c | balrog | bytes_per_sec = freq << (nchannels == 2);
|
642 | ca9cc28c | balrog | |
643 | ca9cc28c | balrog | switch (obt->fmt) {
|
644 | ca9cc28c | balrog | case AUD_FMT_S8:
|
645 | ca9cc28c | balrog | case AUD_FMT_U8:
|
646 | ca9cc28c | balrog | break;
|
647 | ca9cc28c | balrog | |
648 | ca9cc28c | balrog | case AUD_FMT_S16:
|
649 | ca9cc28c | balrog | case AUD_FMT_U16:
|
650 | ca9cc28c | balrog | bytes_per_sec <<= 1;
|
651 | ca9cc28c | balrog | break;
|
652 | ca9cc28c | balrog | |
653 | ca9cc28c | balrog | case AUD_FMT_S32:
|
654 | ca9cc28c | balrog | case AUD_FMT_U32:
|
655 | ca9cc28c | balrog | bytes_per_sec <<= 2;
|
656 | ca9cc28c | balrog | break;
|
657 | ca9cc28c | balrog | } |
658 | 1d14ffa9 | bellard | |
659 | 1d14ffa9 | bellard | threshold = (conf.threshold * bytes_per_sec) / 1000;
|
660 | 1d14ffa9 | bellard | alsa_set_threshold (handle, threshold); |
661 | 1d14ffa9 | bellard | } |
662 | 1d14ffa9 | bellard | |
663 | 1d14ffa9 | bellard | obt->nchannels = nchannels; |
664 | 1d14ffa9 | bellard | obt->freq = freq; |
665 | c0fe3827 | bellard | obt->samples = obt_buffer_size; |
666 | ca9cc28c | balrog | |
667 | 1d14ffa9 | bellard | *handlep = handle; |
668 | 1d14ffa9 | bellard | |
669 | ca9cc28c | balrog | if (conf.verbose &&
|
670 | 8bb414d2 | malc | (obtfmt != req->fmt || |
671 | ca9cc28c | balrog | obt->nchannels != req->nchannels || |
672 | ca9cc28c | balrog | obt->freq != req->freq)) { |
673 | f093feb7 | Vagrant Cascadian | dolog ("Audio parameters for %s\n", typ);
|
674 | 8bb414d2 | malc | alsa_dump_info (req, obt, obtfmt); |
675 | 1d14ffa9 | bellard | } |
676 | 1d14ffa9 | bellard | |
677 | 1d14ffa9 | bellard | #ifdef DEBUG
|
678 | 8bb414d2 | malc | alsa_dump_info (req, obt, obtfmt); |
679 | 1d14ffa9 | bellard | #endif
|
680 | 1d14ffa9 | bellard | return 0; |
681 | 1d14ffa9 | bellard | |
682 | 1d14ffa9 | bellard | err:
|
683 | 6ebfda13 | malc | alsa_anal_close1 (&handle); |
684 | 1d14ffa9 | bellard | return -1; |
685 | 1d14ffa9 | bellard | } |
686 | 1d14ffa9 | bellard | |
687 | 571ec3d6 | bellard | static snd_pcm_sframes_t alsa_get_avail (snd_pcm_t *handle)
|
688 | 571ec3d6 | bellard | { |
689 | 571ec3d6 | bellard | snd_pcm_sframes_t avail; |
690 | 571ec3d6 | bellard | |
691 | 571ec3d6 | bellard | avail = snd_pcm_avail_update (handle); |
692 | 571ec3d6 | bellard | if (avail < 0) { |
693 | 571ec3d6 | bellard | if (avail == -EPIPE) {
|
694 | 571ec3d6 | bellard | if (!alsa_recover (handle)) {
|
695 | 571ec3d6 | bellard | avail = snd_pcm_avail_update (handle); |
696 | 571ec3d6 | bellard | } |
697 | 571ec3d6 | bellard | } |
698 | 571ec3d6 | bellard | |
699 | 571ec3d6 | bellard | if (avail < 0) { |
700 | 571ec3d6 | bellard | alsa_logerr (avail, |
701 | 571ec3d6 | bellard | "Could not obtain number of available frames\n");
|
702 | 571ec3d6 | bellard | return -1; |
703 | 571ec3d6 | bellard | } |
704 | 571ec3d6 | bellard | } |
705 | 571ec3d6 | bellard | |
706 | 571ec3d6 | bellard | return avail;
|
707 | 571ec3d6 | bellard | } |
708 | 571ec3d6 | bellard | |
709 | 541ba4e7 | malc | static void alsa_write_pending (ALSAVoiceOut *alsa) |
710 | 1d14ffa9 | bellard | { |
711 | 541ba4e7 | malc | HWVoiceOut *hw = &alsa->hw; |
712 | 1d14ffa9 | bellard | |
713 | 541ba4e7 | malc | while (alsa->pending) {
|
714 | 541ba4e7 | malc | int left_till_end_samples = hw->samples - alsa->wpos;
|
715 | 541ba4e7 | malc | int len = audio_MIN (alsa->pending, left_till_end_samples);
|
716 | 541ba4e7 | malc | char *src = advance (alsa->pcm_buf, alsa->wpos << hw->info.shift);
|
717 | 1d14ffa9 | bellard | |
718 | 571ec3d6 | bellard | while (len) {
|
719 | 541ba4e7 | malc | snd_pcm_sframes_t written; |
720 | 541ba4e7 | malc | |
721 | 541ba4e7 | malc | written = snd_pcm_writei (alsa->handle, src, len); |
722 | 4787c71d | bellard | |
723 | 571ec3d6 | bellard | if (written <= 0) { |
724 | 4787c71d | bellard | switch (written) {
|
725 | 571ec3d6 | bellard | case 0: |
726 | 571ec3d6 | bellard | if (conf.verbose) {
|
727 | 571ec3d6 | bellard | dolog ("Failed to write %d frames (wrote zero)\n", len);
|
728 | 4787c71d | bellard | } |
729 | 541ba4e7 | malc | return;
|
730 | 4787c71d | bellard | |
731 | 571ec3d6 | bellard | case -EPIPE:
|
732 | 571ec3d6 | bellard | if (alsa_recover (alsa->handle)) {
|
733 | 571ec3d6 | bellard | alsa_logerr (written, "Failed to write %d frames\n",
|
734 | 571ec3d6 | bellard | len); |
735 | 541ba4e7 | malc | return;
|
736 | 571ec3d6 | bellard | } |
737 | 571ec3d6 | bellard | if (conf.verbose) {
|
738 | 571ec3d6 | bellard | dolog ("Recovering from playback xrun\n");
|
739 | 571ec3d6 | bellard | } |
740 | 4787c71d | bellard | continue;
|
741 | 4787c71d | bellard | |
742 | 86635821 | Bjรธrn Mork | case -ESTRPIPE:
|
743 | 86635821 | Bjรธrn Mork | /* stream is suspended and waiting for an
|
744 | 86635821 | Bjรธrn Mork | application recovery */
|
745 | 86635821 | Bjรธrn Mork | if (alsa_resume (alsa->handle)) {
|
746 | 86635821 | Bjรธrn Mork | alsa_logerr (written, "Failed to write %d frames\n",
|
747 | 86635821 | Bjรธrn Mork | len); |
748 | 541ba4e7 | malc | return;
|
749 | 86635821 | Bjรธrn Mork | } |
750 | 86635821 | Bjรธrn Mork | if (conf.verbose) {
|
751 | 86635821 | Bjรธrn Mork | dolog ("Resuming suspended output stream\n");
|
752 | 86635821 | Bjรธrn Mork | } |
753 | 86635821 | Bjรธrn Mork | continue;
|
754 | 86635821 | Bjรธrn Mork | |
755 | 571ec3d6 | bellard | case -EAGAIN:
|
756 | 541ba4e7 | malc | return;
|
757 | 571ec3d6 | bellard | |
758 | 4787c71d | bellard | default:
|
759 | 541ba4e7 | malc | alsa_logerr (written, "Failed to write %d frames from %p\n",
|
760 | 541ba4e7 | malc | len, src); |
761 | 541ba4e7 | malc | return;
|
762 | 1d14ffa9 | bellard | } |
763 | 1d14ffa9 | bellard | } |
764 | 1d14ffa9 | bellard | |
765 | 541ba4e7 | malc | alsa->wpos = (alsa->wpos + written) % hw->samples; |
766 | 541ba4e7 | malc | alsa->pending -= written; |
767 | 571ec3d6 | bellard | len -= written; |
768 | 4787c71d | bellard | } |
769 | 1d14ffa9 | bellard | } |
770 | 541ba4e7 | malc | } |
771 | 541ba4e7 | malc | |
772 | bdff253c | malc | static int alsa_run_out (HWVoiceOut *hw, int live) |
773 | 541ba4e7 | malc | { |
774 | 541ba4e7 | malc | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; |
775 | bdff253c | malc | int decr;
|
776 | 541ba4e7 | malc | snd_pcm_sframes_t avail; |
777 | 541ba4e7 | malc | |
778 | 541ba4e7 | malc | avail = alsa_get_avail (alsa->handle); |
779 | 541ba4e7 | malc | if (avail < 0) { |
780 | 541ba4e7 | malc | dolog ("Could not get number of available playback frames\n");
|
781 | 541ba4e7 | malc | return 0; |
782 | 541ba4e7 | malc | } |
783 | 541ba4e7 | malc | |
784 | 541ba4e7 | malc | decr = audio_MIN (live, avail); |
785 | 541ba4e7 | malc | decr = audio_pcm_hw_clip_out (hw, alsa->pcm_buf, decr, alsa->pending); |
786 | 541ba4e7 | malc | alsa->pending += decr; |
787 | 541ba4e7 | malc | alsa_write_pending (alsa); |
788 | 1d14ffa9 | bellard | return decr;
|
789 | 1d14ffa9 | bellard | } |
790 | 1d14ffa9 | bellard | |
791 | 1d14ffa9 | bellard | static void alsa_fini_out (HWVoiceOut *hw) |
792 | 1d14ffa9 | bellard | { |
793 | 1d14ffa9 | bellard | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; |
794 | 1d14ffa9 | bellard | |
795 | 1d14ffa9 | bellard | ldebug ("alsa_fini\n");
|
796 | 6ebfda13 | malc | alsa_anal_close (&alsa->handle, &alsa->pollhlp); |
797 | 1d14ffa9 | bellard | |
798 | 1d14ffa9 | bellard | if (alsa->pcm_buf) {
|
799 | 1d14ffa9 | bellard | qemu_free (alsa->pcm_buf); |
800 | 1d14ffa9 | bellard | alsa->pcm_buf = NULL;
|
801 | 1d14ffa9 | bellard | } |
802 | 1d14ffa9 | bellard | } |
803 | 1d14ffa9 | bellard | |
804 | 1ea879e5 | malc | static int alsa_init_out (HWVoiceOut *hw, struct audsettings *as) |
805 | 1d14ffa9 | bellard | { |
806 | 1d14ffa9 | bellard | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; |
807 | 1d14ffa9 | bellard | struct alsa_params_req req;
|
808 | 1d14ffa9 | bellard | struct alsa_params_obt obt;
|
809 | 1d14ffa9 | bellard | snd_pcm_t *handle; |
810 | 1ea879e5 | malc | struct audsettings obt_as;
|
811 | 1d14ffa9 | bellard | |
812 | c0fe3827 | bellard | req.fmt = aud_to_alsafmt (as->fmt); |
813 | c0fe3827 | bellard | req.freq = as->freq; |
814 | c0fe3827 | bellard | req.nchannels = as->nchannels; |
815 | 1d14ffa9 | bellard | req.period_size = conf.period_size_out; |
816 | 1d14ffa9 | bellard | req.buffer_size = conf.buffer_size_out; |
817 | 23fb600b | malc | req.size_in_usec = conf.size_in_usec_out; |
818 | 97f155dd | Gerd Hoffmann | req.override_mask = |
819 | 97f155dd | Gerd Hoffmann | (conf.period_size_out_overridden ? 1 : 0) | |
820 | 97f155dd | Gerd Hoffmann | (conf.buffer_size_out_overridden ? 2 : 0); |
821 | 1d14ffa9 | bellard | |
822 | 1d14ffa9 | bellard | if (alsa_open (0, &req, &obt, &handle)) { |
823 | 1d14ffa9 | bellard | return -1; |
824 | 1d14ffa9 | bellard | } |
825 | 1d14ffa9 | bellard | |
826 | c0fe3827 | bellard | obt_as.freq = obt.freq; |
827 | c0fe3827 | bellard | obt_as.nchannels = obt.nchannels; |
828 | ca9cc28c | balrog | obt_as.fmt = obt.fmt; |
829 | ca9cc28c | balrog | obt_as.endianness = obt.endianness; |
830 | c0fe3827 | bellard | |
831 | d929eba5 | bellard | audio_pcm_init_info (&hw->info, &obt_as); |
832 | c0fe3827 | bellard | hw->samples = obt.samples; |
833 | 1d14ffa9 | bellard | |
834 | c0fe3827 | bellard | alsa->pcm_buf = audio_calloc (AUDIO_FUNC, obt.samples, 1 << hw->info.shift);
|
835 | 1d14ffa9 | bellard | if (!alsa->pcm_buf) {
|
836 | 4787c71d | bellard | dolog ("Could not allocate DAC buffer (%d samples, each %d bytes)\n",
|
837 | 4787c71d | bellard | hw->samples, 1 << hw->info.shift);
|
838 | 6ebfda13 | malc | alsa_anal_close1 (&handle); |
839 | 1d14ffa9 | bellard | return -1; |
840 | 1d14ffa9 | bellard | } |
841 | 1d14ffa9 | bellard | |
842 | 1d14ffa9 | bellard | alsa->handle = handle; |
843 | 1d14ffa9 | bellard | return 0; |
844 | 1d14ffa9 | bellard | } |
845 | 1d14ffa9 | bellard | |
846 | 38cc9b60 | Jindrich Makovicka | #define VOICE_CTL_PAUSE 0 |
847 | 38cc9b60 | Jindrich Makovicka | #define VOICE_CTL_PREPARE 1 |
848 | 38cc9b60 | Jindrich Makovicka | #define VOICE_CTL_START 2 |
849 | 38cc9b60 | Jindrich Makovicka | |
850 | 38cc9b60 | Jindrich Makovicka | static int alsa_voice_ctl (snd_pcm_t *handle, const char *typ, int ctl) |
851 | 1d14ffa9 | bellard | { |
852 | 1d14ffa9 | bellard | int err;
|
853 | 571ec3d6 | bellard | |
854 | 38cc9b60 | Jindrich Makovicka | if (ctl == VOICE_CTL_PAUSE) {
|
855 | 571ec3d6 | bellard | err = snd_pcm_drop (handle); |
856 | 571ec3d6 | bellard | if (err < 0) { |
857 | 32d448c4 | bellard | alsa_logerr (err, "Could not stop %s\n", typ);
|
858 | 571ec3d6 | bellard | return -1; |
859 | 571ec3d6 | bellard | } |
860 | 571ec3d6 | bellard | } |
861 | 571ec3d6 | bellard | else {
|
862 | 571ec3d6 | bellard | err = snd_pcm_prepare (handle); |
863 | 571ec3d6 | bellard | if (err < 0) { |
864 | 32d448c4 | bellard | alsa_logerr (err, "Could not prepare handle for %s\n", typ);
|
865 | 571ec3d6 | bellard | return -1; |
866 | 571ec3d6 | bellard | } |
867 | 38cc9b60 | Jindrich Makovicka | if (ctl == VOICE_CTL_START) {
|
868 | 38cc9b60 | Jindrich Makovicka | err = snd_pcm_start(handle); |
869 | 38cc9b60 | Jindrich Makovicka | if (err < 0) { |
870 | 38cc9b60 | Jindrich Makovicka | alsa_logerr (err, "Could not start handle for %s\n", typ);
|
871 | 38cc9b60 | Jindrich Makovicka | return -1; |
872 | 38cc9b60 | Jindrich Makovicka | } |
873 | 38cc9b60 | Jindrich Makovicka | } |
874 | 571ec3d6 | bellard | } |
875 | 571ec3d6 | bellard | |
876 | 571ec3d6 | bellard | return 0; |
877 | 571ec3d6 | bellard | } |
878 | 571ec3d6 | bellard | |
879 | 571ec3d6 | bellard | static int alsa_ctl_out (HWVoiceOut *hw, int cmd, ...) |
880 | 571ec3d6 | bellard | { |
881 | 1d14ffa9 | bellard | ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; |
882 | 1d14ffa9 | bellard | |
883 | 1d14ffa9 | bellard | switch (cmd) {
|
884 | 1d14ffa9 | bellard | case VOICE_ENABLE:
|
885 | 301901b5 | malc | { |
886 | 301901b5 | malc | va_list ap; |
887 | 301901b5 | malc | int poll_mode;
|
888 | 301901b5 | malc | |
889 | 301901b5 | malc | va_start (ap, cmd); |
890 | 301901b5 | malc | poll_mode = va_arg (ap, int);
|
891 | 301901b5 | malc | va_end (ap); |
892 | 301901b5 | malc | |
893 | 301901b5 | malc | ldebug ("enabling voice\n");
|
894 | 301901b5 | malc | if (poll_mode && alsa_poll_out (hw)) {
|
895 | 301901b5 | malc | poll_mode = 0;
|
896 | 301901b5 | malc | } |
897 | 301901b5 | malc | hw->poll_mode = poll_mode; |
898 | 38cc9b60 | Jindrich Makovicka | return alsa_voice_ctl (alsa->handle, "playback", VOICE_CTL_PREPARE); |
899 | 8b438ba3 | malc | } |
900 | 1d14ffa9 | bellard | |
901 | 1d14ffa9 | bellard | case VOICE_DISABLE:
|
902 | 1d14ffa9 | bellard | ldebug ("disabling voice\n");
|
903 | 22d948a2 | Jindrich Makovicka | if (hw->poll_mode) {
|
904 | 22d948a2 | Jindrich Makovicka | hw->poll_mode = 0;
|
905 | 22d948a2 | Jindrich Makovicka | alsa_fini_poll (&alsa->pollhlp); |
906 | 22d948a2 | Jindrich Makovicka | } |
907 | 38cc9b60 | Jindrich Makovicka | return alsa_voice_ctl (alsa->handle, "playback", VOICE_CTL_PAUSE); |
908 | 1d14ffa9 | bellard | } |
909 | 571ec3d6 | bellard | |
910 | 571ec3d6 | bellard | return -1; |
911 | 1d14ffa9 | bellard | } |
912 | 1d14ffa9 | bellard | |
913 | 1ea879e5 | malc | static int alsa_init_in (HWVoiceIn *hw, struct audsettings *as) |
914 | 1d14ffa9 | bellard | { |
915 | 1d14ffa9 | bellard | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; |
916 | 1d14ffa9 | bellard | struct alsa_params_req req;
|
917 | 1d14ffa9 | bellard | struct alsa_params_obt obt;
|
918 | 1d14ffa9 | bellard | snd_pcm_t *handle; |
919 | 1ea879e5 | malc | struct audsettings obt_as;
|
920 | 1d14ffa9 | bellard | |
921 | c0fe3827 | bellard | req.fmt = aud_to_alsafmt (as->fmt); |
922 | c0fe3827 | bellard | req.freq = as->freq; |
923 | c0fe3827 | bellard | req.nchannels = as->nchannels; |
924 | 1d14ffa9 | bellard | req.period_size = conf.period_size_in; |
925 | 1d14ffa9 | bellard | req.buffer_size = conf.buffer_size_in; |
926 | 7a24c800 | malc | req.size_in_usec = conf.size_in_usec_in; |
927 | 97f155dd | Gerd Hoffmann | req.override_mask = |
928 | 97f155dd | Gerd Hoffmann | (conf.period_size_in_overridden ? 1 : 0) | |
929 | 97f155dd | Gerd Hoffmann | (conf.buffer_size_in_overridden ? 2 : 0); |
930 | 1d14ffa9 | bellard | |
931 | 1d14ffa9 | bellard | if (alsa_open (1, &req, &obt, &handle)) { |
932 | 1d14ffa9 | bellard | return -1; |
933 | 1d14ffa9 | bellard | } |
934 | 1d14ffa9 | bellard | |
935 | c0fe3827 | bellard | obt_as.freq = obt.freq; |
936 | c0fe3827 | bellard | obt_as.nchannels = obt.nchannels; |
937 | ca9cc28c | balrog | obt_as.fmt = obt.fmt; |
938 | ca9cc28c | balrog | obt_as.endianness = obt.endianness; |
939 | c0fe3827 | bellard | |
940 | d929eba5 | bellard | audio_pcm_init_info (&hw->info, &obt_as); |
941 | c0fe3827 | bellard | hw->samples = obt.samples; |
942 | c0fe3827 | bellard | |
943 | c0fe3827 | bellard | alsa->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
|
944 | 1d14ffa9 | bellard | if (!alsa->pcm_buf) {
|
945 | 4787c71d | bellard | dolog ("Could not allocate ADC buffer (%d samples, each %d bytes)\n",
|
946 | 4787c71d | bellard | hw->samples, 1 << hw->info.shift);
|
947 | 6ebfda13 | malc | alsa_anal_close1 (&handle); |
948 | 1d14ffa9 | bellard | return -1; |
949 | 1d14ffa9 | bellard | } |
950 | 1d14ffa9 | bellard | |
951 | 1d14ffa9 | bellard | alsa->handle = handle; |
952 | 1d14ffa9 | bellard | return 0; |
953 | 1d14ffa9 | bellard | } |
954 | 1d14ffa9 | bellard | |
955 | 1d14ffa9 | bellard | static void alsa_fini_in (HWVoiceIn *hw) |
956 | 1d14ffa9 | bellard | { |
957 | 1d14ffa9 | bellard | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; |
958 | 1d14ffa9 | bellard | |
959 | 6ebfda13 | malc | alsa_anal_close (&alsa->handle, &alsa->pollhlp); |
960 | 1d14ffa9 | bellard | |
961 | 1d14ffa9 | bellard | if (alsa->pcm_buf) {
|
962 | 1d14ffa9 | bellard | qemu_free (alsa->pcm_buf); |
963 | 1d14ffa9 | bellard | alsa->pcm_buf = NULL;
|
964 | 1d14ffa9 | bellard | } |
965 | 1d14ffa9 | bellard | } |
966 | 1d14ffa9 | bellard | |
967 | 1d14ffa9 | bellard | static int alsa_run_in (HWVoiceIn *hw) |
968 | 1d14ffa9 | bellard | { |
969 | 1d14ffa9 | bellard | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; |
970 | 1d14ffa9 | bellard | int hwshift = hw->info.shift;
|
971 | 1d14ffa9 | bellard | int i;
|
972 | 1d14ffa9 | bellard | int live = audio_pcm_hw_get_live_in (hw);
|
973 | 1d14ffa9 | bellard | int dead = hw->samples - live;
|
974 | 571ec3d6 | bellard | int decr;
|
975 | 1d14ffa9 | bellard | struct {
|
976 | 1d14ffa9 | bellard | int add;
|
977 | 1d14ffa9 | bellard | int len;
|
978 | 1d14ffa9 | bellard | } bufs[2] = {
|
979 | 98f9f48c | malc | { .add = hw->wpos, .len = 0 },
|
980 | 98f9f48c | malc | { .add = 0, .len = 0 } |
981 | 1d14ffa9 | bellard | }; |
982 | 571ec3d6 | bellard | snd_pcm_sframes_t avail; |
983 | 1d14ffa9 | bellard | snd_pcm_uframes_t read_samples = 0;
|
984 | 1d14ffa9 | bellard | |
985 | 1d14ffa9 | bellard | if (!dead) {
|
986 | 1d14ffa9 | bellard | return 0; |
987 | 1d14ffa9 | bellard | } |
988 | 1d14ffa9 | bellard | |
989 | 571ec3d6 | bellard | avail = alsa_get_avail (alsa->handle); |
990 | 571ec3d6 | bellard | if (avail < 0) { |
991 | 571ec3d6 | bellard | dolog ("Could not get number of captured frames\n");
|
992 | 571ec3d6 | bellard | return 0; |
993 | 571ec3d6 | bellard | } |
994 | 571ec3d6 | bellard | |
995 | 86635821 | Bjรธrn Mork | if (!avail) {
|
996 | 86635821 | Bjรธrn Mork | snd_pcm_state_t state; |
997 | 86635821 | Bjรธrn Mork | |
998 | 86635821 | Bjรธrn Mork | state = snd_pcm_state (alsa->handle); |
999 | 86635821 | Bjรธrn Mork | switch (state) {
|
1000 | 86635821 | Bjรธrn Mork | case SND_PCM_STATE_PREPARED:
|
1001 | 86635821 | Bjรธrn Mork | avail = hw->samples; |
1002 | 86635821 | Bjรธrn Mork | break;
|
1003 | 86635821 | Bjรธrn Mork | case SND_PCM_STATE_SUSPENDED:
|
1004 | 86635821 | Bjรธrn Mork | /* stream is suspended and waiting for an application recovery */
|
1005 | 86635821 | Bjรธrn Mork | if (alsa_resume (alsa->handle)) {
|
1006 | 86635821 | Bjรธrn Mork | dolog ("Failed to resume suspended input stream\n");
|
1007 | 86635821 | Bjรธrn Mork | return 0; |
1008 | 86635821 | Bjรธrn Mork | } |
1009 | 86635821 | Bjรธrn Mork | if (conf.verbose) {
|
1010 | 86635821 | Bjรธrn Mork | dolog ("Resuming suspended input stream\n");
|
1011 | 86635821 | Bjรธrn Mork | } |
1012 | 86635821 | Bjรธrn Mork | break;
|
1013 | 86635821 | Bjรธrn Mork | default:
|
1014 | 86635821 | Bjรธrn Mork | if (conf.verbose) {
|
1015 | 86635821 | Bjรธrn Mork | dolog ("No frames available and ALSA state is %d\n", state);
|
1016 | 86635821 | Bjรธrn Mork | } |
1017 | 86635821 | Bjรธrn Mork | return 0; |
1018 | 86635821 | Bjรธrn Mork | } |
1019 | 571ec3d6 | bellard | } |
1020 | 571ec3d6 | bellard | |
1021 | 571ec3d6 | bellard | decr = audio_MIN (dead, avail); |
1022 | 571ec3d6 | bellard | if (!decr) {
|
1023 | 571ec3d6 | bellard | return 0; |
1024 | 571ec3d6 | bellard | } |
1025 | 571ec3d6 | bellard | |
1026 | 571ec3d6 | bellard | if (hw->wpos + decr > hw->samples) {
|
1027 | 1d14ffa9 | bellard | bufs[0].len = (hw->samples - hw->wpos);
|
1028 | 571ec3d6 | bellard | bufs[1].len = (decr - (hw->samples - hw->wpos));
|
1029 | 1d14ffa9 | bellard | } |
1030 | 1d14ffa9 | bellard | else {
|
1031 | 571ec3d6 | bellard | bufs[0].len = decr;
|
1032 | 1d14ffa9 | bellard | } |
1033 | 1d14ffa9 | bellard | |
1034 | 1d14ffa9 | bellard | for (i = 0; i < 2; ++i) { |
1035 | 1d14ffa9 | bellard | void *src;
|
1036 | 1ea879e5 | malc | struct st_sample *dst;
|
1037 | 1d14ffa9 | bellard | snd_pcm_sframes_t nread; |
1038 | 1d14ffa9 | bellard | snd_pcm_uframes_t len; |
1039 | 1d14ffa9 | bellard | |
1040 | 1d14ffa9 | bellard | len = bufs[i].len; |
1041 | 1d14ffa9 | bellard | |
1042 | 1d14ffa9 | bellard | src = advance (alsa->pcm_buf, bufs[i].add << hwshift); |
1043 | 1d14ffa9 | bellard | dst = hw->conv_buf + bufs[i].add; |
1044 | 1d14ffa9 | bellard | |
1045 | 1d14ffa9 | bellard | while (len) {
|
1046 | 1d14ffa9 | bellard | nread = snd_pcm_readi (alsa->handle, src, len); |
1047 | 1d14ffa9 | bellard | |
1048 | 571ec3d6 | bellard | if (nread <= 0) { |
1049 | 1d14ffa9 | bellard | switch (nread) {
|
1050 | 571ec3d6 | bellard | case 0: |
1051 | 571ec3d6 | bellard | if (conf.verbose) {
|
1052 | 571ec3d6 | bellard | dolog ("Failed to read %ld frames (read zero)\n", len);
|
1053 | 1d14ffa9 | bellard | } |
1054 | 1d14ffa9 | bellard | goto exit;
|
1055 | 1d14ffa9 | bellard | |
1056 | 571ec3d6 | bellard | case -EPIPE:
|
1057 | 571ec3d6 | bellard | if (alsa_recover (alsa->handle)) {
|
1058 | 571ec3d6 | bellard | alsa_logerr (nread, "Failed to read %ld frames\n", len);
|
1059 | 571ec3d6 | bellard | goto exit;
|
1060 | 571ec3d6 | bellard | } |
1061 | 571ec3d6 | bellard | if (conf.verbose) {
|
1062 | 571ec3d6 | bellard | dolog ("Recovering from capture xrun\n");
|
1063 | 571ec3d6 | bellard | } |
1064 | 1d14ffa9 | bellard | continue;
|
1065 | 1d14ffa9 | bellard | |
1066 | 571ec3d6 | bellard | case -EAGAIN:
|
1067 | 571ec3d6 | bellard | goto exit;
|
1068 | 571ec3d6 | bellard | |
1069 | 1d14ffa9 | bellard | default:
|
1070 | 1d14ffa9 | bellard | alsa_logerr ( |
1071 | 1d14ffa9 | bellard | nread, |
1072 | 1d14ffa9 | bellard | "Failed to read %ld frames from %p\n",
|
1073 | 1d14ffa9 | bellard | len, |
1074 | 1d14ffa9 | bellard | src |
1075 | 1d14ffa9 | bellard | ); |
1076 | 1d14ffa9 | bellard | goto exit;
|
1077 | 1d14ffa9 | bellard | } |
1078 | 1d14ffa9 | bellard | } |
1079 | 1d14ffa9 | bellard | |
1080 | 1d14ffa9 | bellard | hw->conv (dst, src, nread, &nominal_volume); |
1081 | 1d14ffa9 | bellard | |
1082 | 1d14ffa9 | bellard | src = advance (src, nread << hwshift); |
1083 | 1d14ffa9 | bellard | dst += nread; |
1084 | 1d14ffa9 | bellard | |
1085 | 1d14ffa9 | bellard | read_samples += nread; |
1086 | 1d14ffa9 | bellard | len -= nread; |
1087 | 1d14ffa9 | bellard | } |
1088 | 1d14ffa9 | bellard | } |
1089 | 1d14ffa9 | bellard | |
1090 | 1d14ffa9 | bellard | exit:
|
1091 | 1d14ffa9 | bellard | hw->wpos = (hw->wpos + read_samples) % hw->samples; |
1092 | 1d14ffa9 | bellard | return read_samples;
|
1093 | 1d14ffa9 | bellard | } |
1094 | 1d14ffa9 | bellard | |
1095 | 1d14ffa9 | bellard | static int alsa_read (SWVoiceIn *sw, void *buf, int size) |
1096 | 1d14ffa9 | bellard | { |
1097 | 1d14ffa9 | bellard | return audio_pcm_sw_read (sw, buf, size);
|
1098 | 1d14ffa9 | bellard | } |
1099 | 1d14ffa9 | bellard | |
1100 | 1d14ffa9 | bellard | static int alsa_ctl_in (HWVoiceIn *hw, int cmd, ...) |
1101 | 1d14ffa9 | bellard | { |
1102 | 571ec3d6 | bellard | ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; |
1103 | 571ec3d6 | bellard | |
1104 | 571ec3d6 | bellard | switch (cmd) {
|
1105 | 571ec3d6 | bellard | case VOICE_ENABLE:
|
1106 | a628b869 | malc | { |
1107 | a628b869 | malc | va_list ap; |
1108 | a628b869 | malc | int poll_mode;
|
1109 | 8b438ba3 | malc | |
1110 | a628b869 | malc | va_start (ap, cmd); |
1111 | a628b869 | malc | poll_mode = va_arg (ap, int);
|
1112 | a628b869 | malc | va_end (ap); |
1113 | a628b869 | malc | |
1114 | a628b869 | malc | ldebug ("enabling voice\n");
|
1115 | a628b869 | malc | if (poll_mode && alsa_poll_in (hw)) {
|
1116 | a628b869 | malc | poll_mode = 0;
|
1117 | a628b869 | malc | } |
1118 | a628b869 | malc | hw->poll_mode = poll_mode; |
1119 | a628b869 | malc | |
1120 | 38cc9b60 | Jindrich Makovicka | return alsa_voice_ctl (alsa->handle, "capture", VOICE_CTL_START); |
1121 | a628b869 | malc | } |
1122 | 571ec3d6 | bellard | |
1123 | 571ec3d6 | bellard | case VOICE_DISABLE:
|
1124 | 571ec3d6 | bellard | ldebug ("disabling voice\n");
|
1125 | 8b438ba3 | malc | if (hw->poll_mode) {
|
1126 | 8b438ba3 | malc | hw->poll_mode = 0;
|
1127 | 8b438ba3 | malc | alsa_fini_poll (&alsa->pollhlp); |
1128 | 8b438ba3 | malc | } |
1129 | 38cc9b60 | Jindrich Makovicka | return alsa_voice_ctl (alsa->handle, "capture", VOICE_CTL_PAUSE); |
1130 | 571ec3d6 | bellard | } |
1131 | 571ec3d6 | bellard | |
1132 | 571ec3d6 | bellard | return -1; |
1133 | 1d14ffa9 | bellard | } |
1134 | 1d14ffa9 | bellard | |
1135 | 1d14ffa9 | bellard | static void *alsa_audio_init (void) |
1136 | 1d14ffa9 | bellard | { |
1137 | 1d14ffa9 | bellard | return &conf;
|
1138 | 1d14ffa9 | bellard | } |
1139 | 1d14ffa9 | bellard | |
1140 | 1d14ffa9 | bellard | static void alsa_audio_fini (void *opaque) |
1141 | 1d14ffa9 | bellard | { |
1142 | 1d14ffa9 | bellard | (void) opaque;
|
1143 | 1d14ffa9 | bellard | } |
1144 | 1d14ffa9 | bellard | |
1145 | 1d14ffa9 | bellard | static struct audio_option alsa_options[] = { |
1146 | 98f9f48c | malc | { |
1147 | 98f9f48c | malc | .name = "DAC_SIZE_IN_USEC",
|
1148 | 98f9f48c | malc | .tag = AUD_OPT_BOOL, |
1149 | 98f9f48c | malc | .valp = &conf.size_in_usec_out, |
1150 | 98f9f48c | malc | .descr = "DAC period/buffer size in microseconds (otherwise in frames)"
|
1151 | 98f9f48c | malc | }, |
1152 | 98f9f48c | malc | { |
1153 | 98f9f48c | malc | .name = "DAC_PERIOD_SIZE",
|
1154 | 98f9f48c | malc | .tag = AUD_OPT_INT, |
1155 | 98f9f48c | malc | .valp = &conf.period_size_out, |
1156 | 98f9f48c | malc | .descr = "DAC period size (0 to go with system default)",
|
1157 | 98f9f48c | malc | .overriddenp = &conf.period_size_out_overridden |
1158 | 98f9f48c | malc | }, |
1159 | 98f9f48c | malc | { |
1160 | 98f9f48c | malc | .name = "DAC_BUFFER_SIZE",
|
1161 | 98f9f48c | malc | .tag = AUD_OPT_INT, |
1162 | 98f9f48c | malc | .valp = &conf.buffer_size_out, |
1163 | 98f9f48c | malc | .descr = "DAC buffer size (0 to go with system default)",
|
1164 | 98f9f48c | malc | .overriddenp = &conf.buffer_size_out_overridden |
1165 | 98f9f48c | malc | }, |
1166 | 98f9f48c | malc | { |
1167 | 98f9f48c | malc | .name = "ADC_SIZE_IN_USEC",
|
1168 | 98f9f48c | malc | .tag = AUD_OPT_BOOL, |
1169 | 98f9f48c | malc | .valp = &conf.size_in_usec_in, |
1170 | 98f9f48c | malc | .descr = |
1171 | 98f9f48c | malc | "ADC period/buffer size in microseconds (otherwise in frames)"
|
1172 | 98f9f48c | malc | }, |
1173 | 98f9f48c | malc | { |
1174 | 98f9f48c | malc | .name = "ADC_PERIOD_SIZE",
|
1175 | 98f9f48c | malc | .tag = AUD_OPT_INT, |
1176 | 98f9f48c | malc | .valp = &conf.period_size_in, |
1177 | 98f9f48c | malc | .descr = "ADC period size (0 to go with system default)",
|
1178 | 98f9f48c | malc | .overriddenp = &conf.period_size_in_overridden |
1179 | 98f9f48c | malc | }, |
1180 | 98f9f48c | malc | { |
1181 | 98f9f48c | malc | .name = "ADC_BUFFER_SIZE",
|
1182 | 98f9f48c | malc | .tag = AUD_OPT_INT, |
1183 | 98f9f48c | malc | .valp = &conf.buffer_size_in, |
1184 | 98f9f48c | malc | .descr = "ADC buffer size (0 to go with system default)",
|
1185 | 98f9f48c | malc | .overriddenp = &conf.buffer_size_in_overridden |
1186 | 98f9f48c | malc | }, |
1187 | 98f9f48c | malc | { |
1188 | 98f9f48c | malc | .name = "THRESHOLD",
|
1189 | 98f9f48c | malc | .tag = AUD_OPT_INT, |
1190 | 98f9f48c | malc | .valp = &conf.threshold, |
1191 | 98f9f48c | malc | .descr = "(undocumented)"
|
1192 | 98f9f48c | malc | }, |
1193 | 98f9f48c | malc | { |
1194 | 98f9f48c | malc | .name = "DAC_DEV",
|
1195 | 98f9f48c | malc | .tag = AUD_OPT_STR, |
1196 | 98f9f48c | malc | .valp = &conf.pcm_name_out, |
1197 | 98f9f48c | malc | .descr = "DAC device name (for instance dmix)"
|
1198 | 98f9f48c | malc | }, |
1199 | 98f9f48c | malc | { |
1200 | 98f9f48c | malc | .name = "ADC_DEV",
|
1201 | 98f9f48c | malc | .tag = AUD_OPT_STR, |
1202 | 98f9f48c | malc | .valp = &conf.pcm_name_in, |
1203 | 98f9f48c | malc | .descr = "ADC device name"
|
1204 | 98f9f48c | malc | }, |
1205 | 98f9f48c | malc | { |
1206 | 98f9f48c | malc | .name = "VERBOSE",
|
1207 | 98f9f48c | malc | .tag = AUD_OPT_BOOL, |
1208 | 98f9f48c | malc | .valp = &conf.verbose, |
1209 | 98f9f48c | malc | .descr = "Behave in a more verbose way"
|
1210 | 98f9f48c | malc | }, |
1211 | 2700efa3 | Juan Quintela | { /* End of list */ }
|
1212 | 1d14ffa9 | bellard | }; |
1213 | 1d14ffa9 | bellard | |
1214 | 35f4b58c | blueswir1 | static struct audio_pcm_ops alsa_pcm_ops = { |
1215 | 1dd3e4d1 | Juan Quintela | .init_out = alsa_init_out, |
1216 | 1dd3e4d1 | Juan Quintela | .fini_out = alsa_fini_out, |
1217 | 1dd3e4d1 | Juan Quintela | .run_out = alsa_run_out, |
1218 | 1dd3e4d1 | Juan Quintela | .write = alsa_write, |
1219 | 1dd3e4d1 | Juan Quintela | .ctl_out = alsa_ctl_out, |
1220 | 1dd3e4d1 | Juan Quintela | |
1221 | 1dd3e4d1 | Juan Quintela | .init_in = alsa_init_in, |
1222 | 1dd3e4d1 | Juan Quintela | .fini_in = alsa_fini_in, |
1223 | 1dd3e4d1 | Juan Quintela | .run_in = alsa_run_in, |
1224 | 1dd3e4d1 | Juan Quintela | .read = alsa_read, |
1225 | 8b438ba3 | malc | .ctl_in = alsa_ctl_in, |
1226 | 1d14ffa9 | bellard | }; |
1227 | 1d14ffa9 | bellard | |
1228 | 1d14ffa9 | bellard | struct audio_driver alsa_audio_driver = {
|
1229 | bee37f32 | Juan Quintela | .name = "alsa",
|
1230 | bee37f32 | Juan Quintela | .descr = "ALSA http://www.alsa-project.org",
|
1231 | bee37f32 | Juan Quintela | .options = alsa_options, |
1232 | bee37f32 | Juan Quintela | .init = alsa_audio_init, |
1233 | bee37f32 | Juan Quintela | .fini = alsa_audio_fini, |
1234 | bee37f32 | Juan Quintela | .pcm_ops = &alsa_pcm_ops, |
1235 | bee37f32 | Juan Quintela | .can_be_default = 1,
|
1236 | bee37f32 | Juan Quintela | .max_voices_out = INT_MAX, |
1237 | bee37f32 | Juan Quintela | .max_voices_in = INT_MAX, |
1238 | bee37f32 | Juan Quintela | .voice_size_out = sizeof (ALSAVoiceOut),
|
1239 | bee37f32 | Juan Quintela | .voice_size_in = sizeof (ALSAVoiceIn)
|
1240 | 1d14ffa9 | bellard | }; |