2 * Copyright (C) 2010 Red Hat, Inc.
4 * maintained by Gerd Hoffmann <kraxel@redhat.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 or
9 * (at your option) version 3 of the License.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "qemu/error-report.h"
22 #include "qemu/timer.h"
23 #include "ui/qemu-spice.h"
25 #define AUDIO_CAP "spice"
27 #include "audio_int.h"
29 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3
30 #define LINE_OUT_SAMPLES (480 * 4)
32 #define LINE_OUT_SAMPLES (256 * 4)
35 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3
36 #define LINE_IN_SAMPLES (480 * 4)
38 #define LINE_IN_SAMPLES (256 * 4)
41 typedef struct SpiceRateCtl {
46 typedef struct SpiceVoiceOut {
48 SpicePlaybackInstance sin;
56 typedef struct SpiceVoiceIn {
58 SpiceRecordInstance sin;
61 uint32_t samples[LINE_IN_SAMPLES];
64 static const SpicePlaybackInterface playback_sif = {
65 .base.type = SPICE_INTERFACE_PLAYBACK,
66 .base.description = "playback",
67 .base.major_version = SPICE_INTERFACE_PLAYBACK_MAJOR,
68 .base.minor_version = SPICE_INTERFACE_PLAYBACK_MINOR,
71 static const SpiceRecordInterface record_sif = {
72 .base.type = SPICE_INTERFACE_RECORD,
73 .base.description = "record",
74 .base.major_version = SPICE_INTERFACE_RECORD_MAJOR,
75 .base.minor_version = SPICE_INTERFACE_RECORD_MINOR,
78 static void *spice_audio_init (void)
83 return &spice_audio_init;
86 static void spice_audio_fini (void *opaque)
91 static void rate_start (SpiceRateCtl *rate)
93 memset (rate, 0, sizeof (*rate));
94 rate->start_ticks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
97 static int rate_get_samples (struct audio_pcm_info *info, SpiceRateCtl *rate)
104 now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
105 ticks = now - rate->start_ticks;
106 bytes = muldiv64 (ticks, info->bytes_per_second, get_ticks_per_sec ());
107 samples = (bytes - rate->bytes_sent) >> info->shift;
108 if (samples < 0 || samples > 65536) {
109 error_report("Resetting rate control (%" PRId64 " samples)", samples);
113 rate->bytes_sent += samples << info->shift;
119 static int line_out_init(HWVoiceOut *hw, struct audsettings *as,
122 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
123 struct audsettings settings;
125 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3
126 settings.freq = spice_server_get_best_playback_rate(NULL);
128 settings.freq = SPICE_INTERFACE_PLAYBACK_FREQ;
130 settings.nchannels = SPICE_INTERFACE_PLAYBACK_CHAN;
131 settings.fmt = AUD_FMT_S16;
132 settings.endianness = AUDIO_HOST_ENDIANNESS;
134 audio_pcm_init_info (&hw->info, &settings);
135 hw->samples = LINE_OUT_SAMPLES;
138 out->sin.base.sif = &playback_sif.base;
139 qemu_spice_add_interface (&out->sin.base);
140 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3
141 spice_server_set_playback_rate(&out->sin, settings.freq);
146 static void line_out_fini (HWVoiceOut *hw)
148 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
150 spice_server_remove_interface (&out->sin.base);
153 static int line_out_run (HWVoiceOut *hw, int live)
155 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
163 decr = rate_get_samples (&hw->info, &out->rate);
164 decr = audio_MIN (live, decr);
169 int left_till_end_samples = hw->samples - rpos;
170 int len = audio_MIN (samples, left_till_end_samples);
173 spice_server_playback_get_buffer (&out->sin, &out->frame, &out->fsize);
174 out->fpos = out->frame;
177 len = audio_MIN (len, out->fsize);
178 hw->clip (out->fpos, hw->mix_buf + rpos, len);
181 if (out->fsize == 0) {
182 spice_server_playback_put_samples (&out->sin, out->frame);
183 out->frame = out->fpos = NULL;
186 rpos = (rpos + len) % hw->samples;
193 static int line_out_write (SWVoiceOut *sw, void *buf, int len)
195 return audio_pcm_sw_write (sw, buf, len);
198 static int line_out_ctl (HWVoiceOut *hw, int cmd, ...)
200 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
208 rate_start (&out->rate);
209 spice_server_playback_start (&out->sin);
217 memset (out->fpos, 0, out->fsize << 2);
218 spice_server_playback_put_samples (&out->sin, out->frame);
219 out->frame = out->fpos = NULL;
221 spice_server_playback_stop (&out->sin);
225 #if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2))
231 sw = va_arg (ap, SWVoiceOut *);
234 vol[0] = sw->vol.l / ((1ULL << 16) + 1);
235 vol[1] = sw->vol.r / ((1ULL << 16) + 1);
236 spice_server_playback_set_volume (&out->sin, 2, vol);
237 spice_server_playback_set_mute (&out->sin, sw->vol.mute);
248 static int line_in_init(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
250 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
251 struct audsettings settings;
253 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3
254 settings.freq = spice_server_get_best_record_rate(NULL);
256 settings.freq = SPICE_INTERFACE_RECORD_FREQ;
258 settings.nchannels = SPICE_INTERFACE_RECORD_CHAN;
259 settings.fmt = AUD_FMT_S16;
260 settings.endianness = AUDIO_HOST_ENDIANNESS;
262 audio_pcm_init_info (&hw->info, &settings);
263 hw->samples = LINE_IN_SAMPLES;
266 in->sin.base.sif = &record_sif.base;
267 qemu_spice_add_interface (&in->sin.base);
268 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3
269 spice_server_set_record_rate(&in->sin, settings.freq);
274 static void line_in_fini (HWVoiceIn *hw)
276 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
278 spice_server_remove_interface (&in->sin.base);
281 static int line_in_run (HWVoiceIn *hw)
283 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
288 const uint32_t *samples;
290 if (!(num_samples = hw->samples - audio_pcm_hw_get_live_in (hw))) {
294 delta_samp = rate_get_samples (&hw->info, &in->rate);
295 num_samples = audio_MIN (num_samples, delta_samp);
297 ready = spice_server_record_get_samples (&in->sin, in->samples, num_samples);
298 samples = in->samples;
300 static const uint32_t silence[LINE_IN_SAMPLES];
302 ready = LINE_IN_SAMPLES;
305 num_samples = audio_MIN (ready, num_samples);
307 if (hw->wpos + num_samples > hw->samples) {
308 len[0] = hw->samples - hw->wpos;
309 len[1] = num_samples - len[0];
311 len[0] = num_samples;
315 hw->conv (hw->conv_buf + hw->wpos, samples, len[0]);
318 hw->conv (hw->conv_buf, samples + len[0], len[1]);
321 hw->wpos = (hw->wpos + num_samples) % hw->samples;
326 static int line_in_read (SWVoiceIn *sw, void *buf, int size)
328 return audio_pcm_sw_read (sw, buf, size);
331 static int line_in_ctl (HWVoiceIn *hw, int cmd, ...)
333 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
341 rate_start (&in->rate);
342 spice_server_record_start (&in->sin);
349 spice_server_record_stop (&in->sin);
353 #if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2))
359 sw = va_arg (ap, SWVoiceIn *);
362 vol[0] = sw->vol.l / ((1ULL << 16) + 1);
363 vol[1] = sw->vol.r / ((1ULL << 16) + 1);
364 spice_server_record_set_volume (&in->sin, 2, vol);
365 spice_server_record_set_mute (&in->sin, sw->vol.mute);
374 static struct audio_option audio_options[] = {
375 { /* end of list */ },
378 static struct audio_pcm_ops audio_callbacks = {
379 .init_out = line_out_init,
380 .fini_out = line_out_fini,
381 .run_out = line_out_run,
382 .write = line_out_write,
383 .ctl_out = line_out_ctl,
385 .init_in = line_in_init,
386 .fini_in = line_in_fini,
387 .run_in = line_in_run,
388 .read = line_in_read,
389 .ctl_in = line_in_ctl,
392 struct audio_driver spice_audio_driver = {
394 .descr = "spice audio driver",
395 .options = audio_options,
396 .init = spice_audio_init,
397 .fini = spice_audio_fini,
398 .pcm_ops = &audio_callbacks,
401 .voice_size_out = sizeof (SpiceVoiceOut),
402 .voice_size_in = sizeof (SpiceVoiceIn),
403 #if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2))
404 .ctl_caps = VOICE_VOLUME_CAP
408 void qemu_spice_audio_init (void)
410 spice_audio_driver.can_be_default = 1;