ia64/xen-unstable

view tools/ioemu/audio/noaudio.c @ 15841:c5f735271e22

[IA64] Foreign p2m: Fix vti domain builder.

It should set arch_domain::convmem_end.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Alex Williamson <alex.williamson@hp.com>
date Thu Sep 06 13:48:43 2007 -0600 (2007-09-06)
parents 08a11694b109
children
line source
1 /*
2 * QEMU Timer based audio emulation
3 *
4 * Copyright (c) 2004-2005 Vassili Karpov (malc)
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include "vl.h"
26 #define AUDIO_CAP "noaudio"
27 #include "audio_int.h"
29 typedef struct NoVoiceOut {
30 HWVoiceOut hw;
31 int64_t old_ticks;
32 } NoVoiceOut;
34 typedef struct NoVoiceIn {
35 HWVoiceIn hw;
36 int64_t old_ticks;
37 } NoVoiceIn;
39 static int no_run_out (HWVoiceOut *hw)
40 {
41 NoVoiceOut *no = (NoVoiceOut *) hw;
42 int live, decr, samples;
43 int64_t now;
44 int64_t ticks;
45 int64_t bytes;
47 live = audio_pcm_hw_get_live_out (&no->hw);
48 if (!live) {
49 return 0;
50 }
52 now = qemu_get_clock (vm_clock);
53 ticks = now - no->old_ticks;
54 bytes = (ticks * hw->info.bytes_per_second) / ticks_per_sec;
55 bytes = audio_MIN (bytes, INT_MAX);
56 samples = bytes >> hw->info.shift;
58 no->old_ticks = now;
59 decr = audio_MIN (live, samples);
60 hw->rpos = (hw->rpos + decr) % hw->samples;
61 return decr;
62 }
64 static int no_write (SWVoiceOut *sw, void *buf, int len)
65 {
66 return audio_pcm_sw_write (sw, buf, len);
67 }
69 static int no_init_out (HWVoiceOut *hw, audsettings_t *as)
70 {
71 audio_pcm_init_info (&hw->info, as);
72 hw->samples = 1024;
73 return 0;
74 }
76 static void no_fini_out (HWVoiceOut *hw)
77 {
78 (void) hw;
79 }
81 static int no_ctl_out (HWVoiceOut *hw, int cmd, ...)
82 {
83 (void) hw;
84 (void) cmd;
85 return 0;
86 }
88 static int no_init_in (HWVoiceIn *hw, audsettings_t *as)
89 {
90 audio_pcm_init_info (&hw->info, as);
91 hw->samples = 1024;
92 return 0;
93 }
95 static void no_fini_in (HWVoiceIn *hw)
96 {
97 (void) hw;
98 }
100 static int no_run_in (HWVoiceIn *hw)
101 {
102 NoVoiceIn *no = (NoVoiceIn *) hw;
103 int live = audio_pcm_hw_get_live_in (hw);
104 int dead = hw->samples - live;
105 int samples = 0;
107 if (dead) {
108 int64_t now = qemu_get_clock (vm_clock);
109 int64_t ticks = now - no->old_ticks;
110 int64_t bytes = (ticks * hw->info.bytes_per_second) / ticks_per_sec;
112 no->old_ticks = now;
113 bytes = audio_MIN (bytes, INT_MAX);
114 samples = bytes >> hw->info.shift;
115 samples = audio_MIN (samples, dead);
116 }
117 return samples;
118 }
120 static int no_read (SWVoiceIn *sw, void *buf, int size)
121 {
122 int samples = size >> sw->info.shift;
123 int total = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
124 int to_clear = audio_MIN (samples, total);
125 audio_pcm_info_clear_buf (&sw->info, buf, to_clear);
126 return to_clear;
127 }
129 static int no_ctl_in (HWVoiceIn *hw, int cmd, ...)
130 {
131 (void) hw;
132 (void) cmd;
133 return 0;
134 }
136 static void *no_audio_init (void)
137 {
138 return &no_audio_init;
139 }
141 static void no_audio_fini (void *opaque)
142 {
143 (void) opaque;
144 }
146 static struct audio_pcm_ops no_pcm_ops = {
147 no_init_out,
148 no_fini_out,
149 no_run_out,
150 no_write,
151 no_ctl_out,
153 no_init_in,
154 no_fini_in,
155 no_run_in,
156 no_read,
157 no_ctl_in
158 };
160 struct audio_driver no_audio_driver = {
161 INIT_FIELD (name = ) "none",
162 INIT_FIELD (descr = ) "Timer based audio emulation",
163 INIT_FIELD (options = ) NULL,
164 INIT_FIELD (init = ) no_audio_init,
165 INIT_FIELD (fini = ) no_audio_fini,
166 INIT_FIELD (pcm_ops = ) &no_pcm_ops,
167 INIT_FIELD (can_be_default = ) 1,
168 INIT_FIELD (max_voices_out = ) INT_MAX,
169 INIT_FIELD (max_voices_in = ) INT_MAX,
170 INIT_FIELD (voice_size_out = ) sizeof (NoVoiceOut),
171 INIT_FIELD (voice_size_in = ) sizeof (NoVoiceIn)
172 };