|
1 |
#include "hw/hw.h"
|
|
2 |
#include "qemu-timer.h"
|
|
3 |
#include "ui/qemu-spice.h"
|
|
4 |
|
|
5 |
#define AUDIO_CAP "spice"
|
|
6 |
#include "audio.h"
|
|
7 |
#include "audio_int.h"
|
|
8 |
|
|
9 |
#define LINE_IN_SAMPLES 1024
|
|
10 |
#define LINE_OUT_SAMPLES 1024
|
|
11 |
|
|
12 |
typedef struct SpiceRateCtl {
|
|
13 |
int64_t start_ticks;
|
|
14 |
int64_t bytes_sent;
|
|
15 |
} SpiceRateCtl;
|
|
16 |
|
|
17 |
typedef struct SpiceVoiceOut {
|
|
18 |
HWVoiceOut hw;
|
|
19 |
SpicePlaybackInstance sin;
|
|
20 |
SpiceRateCtl rate;
|
|
21 |
int active;
|
|
22 |
uint32_t *frame;
|
|
23 |
uint32_t *fpos;
|
|
24 |
uint32_t fsize;
|
|
25 |
} SpiceVoiceOut;
|
|
26 |
|
|
27 |
typedef struct SpiceVoiceIn {
|
|
28 |
HWVoiceIn hw;
|
|
29 |
SpiceRecordInstance sin;
|
|
30 |
SpiceRateCtl rate;
|
|
31 |
int active;
|
|
32 |
uint32_t samples[LINE_IN_SAMPLES];
|
|
33 |
} SpiceVoiceIn;
|
|
34 |
|
|
35 |
static const SpicePlaybackInterface playback_sif = {
|
|
36 |
.base.type = SPICE_INTERFACE_PLAYBACK,
|
|
37 |
.base.description = "playback",
|
|
38 |
.base.major_version = SPICE_INTERFACE_PLAYBACK_MAJOR,
|
|
39 |
.base.minor_version = SPICE_INTERFACE_PLAYBACK_MINOR,
|
|
40 |
};
|
|
41 |
|
|
42 |
static const SpiceRecordInterface record_sif = {
|
|
43 |
.base.type = SPICE_INTERFACE_RECORD,
|
|
44 |
.base.description = "record",
|
|
45 |
.base.major_version = SPICE_INTERFACE_RECORD_MAJOR,
|
|
46 |
.base.minor_version = SPICE_INTERFACE_RECORD_MINOR,
|
|
47 |
};
|
|
48 |
|
|
49 |
static void *spice_audio_init (void)
|
|
50 |
{
|
|
51 |
if (!using_spice) {
|
|
52 |
return NULL;
|
|
53 |
}
|
|
54 |
return &spice_audio_init;
|
|
55 |
}
|
|
56 |
|
|
57 |
static void spice_audio_fini (void *opaque)
|
|
58 |
{
|
|
59 |
/* nothing */
|
|
60 |
}
|
|
61 |
|
|
62 |
static void rate_start (SpiceRateCtl *rate)
|
|
63 |
{
|
|
64 |
memset (rate, 0, sizeof (*rate));
|
|
65 |
rate->start_ticks = qemu_get_clock (vm_clock);
|
|
66 |
}
|
|
67 |
|
|
68 |
static int rate_get_samples (struct audio_pcm_info *info, SpiceRateCtl *rate)
|
|
69 |
{
|
|
70 |
int64_t now;
|
|
71 |
int64_t ticks;
|
|
72 |
int64_t bytes;
|
|
73 |
int64_t samples;
|
|
74 |
|
|
75 |
now = qemu_get_clock (vm_clock);
|
|
76 |
ticks = now - rate->start_ticks;
|
|
77 |
bytes = muldiv64 (ticks, info->bytes_per_second, get_ticks_per_sec ());
|
|
78 |
samples = (bytes - rate->bytes_sent) >> info->shift;
|
|
79 |
if (samples < 0 || samples > 65536) {
|
|
80 |
fprintf (stderr, "Resetting rate control (%" PRId64 " samples)\n", samples);
|
|
81 |
rate_start (rate);
|
|
82 |
samples = 0;
|
|
83 |
}
|
|
84 |
rate->bytes_sent += samples << info->shift;
|
|
85 |
return samples;
|
|
86 |
}
|
|
87 |
|
|
88 |
/* playback */
|
|
89 |
|
|
90 |
static int line_out_init (HWVoiceOut *hw, struct audsettings *as)
|
|
91 |
{
|
|
92 |
SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
|
|
93 |
struct audsettings settings;
|
|
94 |
|
|
95 |
settings.freq = SPICE_INTERFACE_PLAYBACK_FREQ;
|
|
96 |
settings.nchannels = SPICE_INTERFACE_PLAYBACK_CHAN;
|
|
97 |
settings.fmt = AUD_FMT_S16;
|
|
98 |
settings.endianness = AUDIO_HOST_ENDIANNESS;
|
|
99 |
|
|
100 |
audio_pcm_init_info (&hw->info, &settings);
|
|
101 |
hw->samples = LINE_OUT_SAMPLES;
|
|
102 |
out->active = 0;
|
|
103 |
|
|
104 |
out->sin.base.sif = &playback_sif.base;
|
|
105 |
qemu_spice_add_interface (&out->sin.base);
|
|
106 |
return 0;
|
|
107 |
}
|
|
108 |
|
|
109 |
static void line_out_fini (HWVoiceOut *hw)
|
|
110 |
{
|
|
111 |
SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
|
|
112 |
|
|
113 |
spice_server_remove_interface (&out->sin.base);
|
|
114 |
}
|
|
115 |
|
|
116 |
static int line_out_run (HWVoiceOut *hw, int live)
|
|
117 |
{
|
|
118 |
SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
|
|
119 |
int rpos, decr;
|
|
120 |
int samples;
|
|
121 |
|
|
122 |
if (!live) {
|
|
123 |
return 0;
|
|
124 |
}
|
|
125 |
|
|
126 |
decr = rate_get_samples (&hw->info, &out->rate);
|
|
127 |
decr = audio_MIN (live, decr);
|
|
128 |
|
|
129 |
samples = decr;
|
|
130 |
rpos = hw->rpos;
|
|
131 |
while (samples) {
|
|
132 |
int left_till_end_samples = hw->samples - rpos;
|
|
133 |
int len = audio_MIN (samples, left_till_end_samples);
|
|
134 |
|
|
135 |
if (!out->frame) {
|
|
136 |
spice_server_playback_get_buffer (&out->sin, &out->frame, &out->fsize);
|
|
137 |
out->fpos = out->frame;
|
|
138 |
}
|
|
139 |
if (out->frame) {
|
|
140 |
len = audio_MIN (len, out->fsize);
|
|
141 |
hw->clip (out->fpos, hw->mix_buf + rpos, len);
|
|
142 |
out->fsize -= len;
|
|
143 |
out->fpos += len;
|
|
144 |
if (out->fsize == 0) {
|
|
145 |
spice_server_playback_put_samples (&out->sin, out->frame);
|
|
146 |
out->frame = out->fpos = NULL;
|
|
147 |
}
|
|
148 |
}
|
|
149 |
rpos = (rpos + len) % hw->samples;
|
|
150 |
samples -= len;
|
|
151 |
}
|
|
152 |
hw->rpos = rpos;
|
|
153 |
return decr;
|
|
154 |
}
|
|
155 |
|
|
156 |
static int line_out_write (SWVoiceOut *sw, void *buf, int len)
|
|
157 |
{
|
|
158 |
return audio_pcm_sw_write (sw, buf, len);
|
|
159 |
}
|
|
160 |
|
|
161 |
static int line_out_ctl (HWVoiceOut *hw, int cmd, ...)
|
|
162 |
{
|
|
163 |
SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
|
|
164 |
|
|
165 |
switch (cmd) {
|
|
166 |
case VOICE_ENABLE:
|
|
167 |
if (out->active) {
|
|
168 |
break;
|
|
169 |
}
|
|
170 |
out->active = 1;
|
|
171 |
rate_start (&out->rate);
|
|
172 |
spice_server_playback_start (&out->sin);
|
|
173 |
break;
|
|
174 |
case VOICE_DISABLE:
|
|
175 |
if (!out->active) {
|
|
176 |
break;
|
|
177 |
}
|
|
178 |
out->active = 0;
|
|
179 |
if (out->frame) {
|
|
180 |
memset (out->fpos, 0, out->fsize << 2);
|
|
181 |
spice_server_playback_put_samples (&out->sin, out->frame);
|
|
182 |
out->frame = out->fpos = NULL;
|
|
183 |
}
|
|
184 |
spice_server_playback_stop (&out->sin);
|
|
185 |
break;
|
|
186 |
}
|
|
187 |
return 0;
|
|
188 |
}
|
|
189 |
|
|
190 |
/* record */
|
|
191 |
|
|
192 |
static int line_in_init (HWVoiceIn *hw, struct audsettings *as)
|
|
193 |
{
|
|
194 |
SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
|
|
195 |
struct audsettings settings;
|
|
196 |
|
|
197 |
settings.freq = SPICE_INTERFACE_RECORD_FREQ;
|
|
198 |
settings.nchannels = SPICE_INTERFACE_RECORD_CHAN;
|
|
199 |
settings.fmt = AUD_FMT_S16;
|
|
200 |
settings.endianness = AUDIO_HOST_ENDIANNESS;
|
|
201 |
|
|
202 |
audio_pcm_init_info (&hw->info, &settings);
|
|
203 |
hw->samples = LINE_IN_SAMPLES;
|
|
204 |
in->active = 0;
|
|
205 |
|
|
206 |
in->sin.base.sif = &record_sif.base;
|
|
207 |
qemu_spice_add_interface (&in->sin.base);
|
|
208 |
return 0;
|
|
209 |
}
|
|
210 |
|
|
211 |
static void line_in_fini (HWVoiceIn *hw)
|
|
212 |
{
|
|
213 |
SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
|
|
214 |
|
|
215 |
spice_server_remove_interface (&in->sin.base);
|
|
216 |
}
|
|
217 |
|
|
218 |
static int line_in_run (HWVoiceIn *hw)
|
|
219 |
{
|
|
220 |
SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
|
|
221 |
int num_samples;
|
|
222 |
int ready;
|
|
223 |
int len[2];
|
|
224 |
uint64_t delta_samp;
|
|
225 |
const uint32_t *samples;
|
|
226 |
|
|
227 |
if (!(num_samples = hw->samples - audio_pcm_hw_get_live_in (hw))) {
|
|
228 |
return 0;
|
|
229 |
}
|
|
230 |
|
|
231 |
delta_samp = rate_get_samples (&hw->info, &in->rate);
|
|
232 |
num_samples = audio_MIN (num_samples, delta_samp);
|
|
233 |
|
|
234 |
ready = spice_server_record_get_samples (&in->sin, in->samples, num_samples);
|
|
235 |
samples = in->samples;
|
|
236 |
if (ready == 0) {
|
|
237 |
static const uint32_t silence[LINE_IN_SAMPLES];
|
|
238 |
samples = silence;
|
|
239 |
ready = LINE_IN_SAMPLES;
|
|
240 |
}
|
|
241 |
|
|
242 |
num_samples = audio_MIN (ready, num_samples);
|
|
243 |
|
|
244 |
if (hw->wpos + num_samples > hw->samples) {
|
|
245 |
len[0] = hw->samples - hw->wpos;
|
|
246 |
len[1] = num_samples - len[0];
|
|
247 |
} else {
|
|
248 |
len[0] = num_samples;
|
|
249 |
len[1] = 0;
|
|
250 |
}
|
|
251 |
|
|
252 |
hw->conv (hw->conv_buf + hw->wpos, samples, len[0], &nominal_volume);
|
|
253 |
|
|
254 |
if (len[1]) {
|
|
255 |
hw->conv (hw->conv_buf, samples + len[0], len[1],
|
|
256 |
&nominal_volume);
|
|
257 |
}
|
|
258 |
|
|
259 |
hw->wpos = (hw->wpos + num_samples) % hw->samples;
|
|
260 |
|
|
261 |
return num_samples;
|
|
262 |
}
|
|
263 |
|
|
264 |
static int line_in_read (SWVoiceIn *sw, void *buf, int size)
|
|
265 |
{
|
|
266 |
return audio_pcm_sw_read (sw, buf, size);
|
|
267 |
}
|
|
268 |
|
|
269 |
static int line_in_ctl (HWVoiceIn *hw, int cmd, ...)
|
|
270 |
{
|
|
271 |
SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
|
|
272 |
|
|
273 |
switch (cmd) {
|
|
274 |
case VOICE_ENABLE:
|
|
275 |
if (in->active) {
|
|
276 |
break;
|
|
277 |
}
|
|
278 |
in->active = 1;
|
|
279 |
rate_start (&in->rate);
|
|
280 |
spice_server_record_start (&in->sin);
|
|
281 |
break;
|
|
282 |
case VOICE_DISABLE:
|
|
283 |
if (!in->active) {
|
|
284 |
break;
|
|
285 |
}
|
|
286 |
in->active = 0;
|
|
287 |
spice_server_record_stop (&in->sin);
|
|
288 |
break;
|
|
289 |
}
|
|
290 |
return 0;
|
|
291 |
}
|
|
292 |
|
|
293 |
static struct audio_option audio_options[] = {
|
|
294 |
{ /* end of list */ },
|
|
295 |
};
|
|
296 |
|
|
297 |
static struct audio_pcm_ops audio_callbacks = {
|
|
298 |
.init_out = line_out_init,
|
|
299 |
.fini_out = line_out_fini,
|
|
300 |
.run_out = line_out_run,
|
|
301 |
.write = line_out_write,
|
|
302 |
.ctl_out = line_out_ctl,
|
|
303 |
|
|
304 |
.init_in = line_in_init,
|
|
305 |
.fini_in = line_in_fini,
|
|
306 |
.run_in = line_in_run,
|
|
307 |
.read = line_in_read,
|
|
308 |
.ctl_in = line_in_ctl,
|
|
309 |
};
|
|
310 |
|
|
311 |
struct audio_driver spice_audio_driver = {
|
|
312 |
.name = "spice",
|
|
313 |
.descr = "spice audio driver",
|
|
314 |
.options = audio_options,
|
|
315 |
.init = spice_audio_init,
|
|
316 |
.fini = spice_audio_fini,
|
|
317 |
.pcm_ops = &audio_callbacks,
|
|
318 |
.max_voices_out = 1,
|
|
319 |
.max_voices_in = 1,
|
|
320 |
.voice_size_out = sizeof (SpiceVoiceOut),
|
|
321 |
.voice_size_in = sizeof (SpiceVoiceIn),
|
|
322 |
};
|
|
323 |
|
|
324 |
void qemu_spice_audio_init (void)
|
|
325 |
{
|
|
326 |
spice_audio_driver.can_be_default = 1;
|
|
327 |
}
|