| /* |
| * Copyright (C) 2010 Red Hat, Inc. |
| * |
| * maintained by Gerd Hoffmann <kraxel@redhat.com> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 or |
| * (at your option) version 3 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qemu/host-utils.h" |
| #include "qemu/module.h" |
| #include "qemu/error-report.h" |
| #include "qemu/timer.h" |
| #include "ui/qemu-spice.h" |
| |
| #define AUDIO_CAP "spice" |
| #include "audio.h" |
| #include "audio_int.h" |
| |
| #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3 |
| #define LINE_OUT_SAMPLES (480 * 4) |
| #else |
| #define LINE_OUT_SAMPLES (256 * 4) |
| #endif |
| |
| #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 |
| #define LINE_IN_SAMPLES (480 * 4) |
| #else |
| #define LINE_IN_SAMPLES (256 * 4) |
| #endif |
| |
| typedef struct SpiceRateCtl { |
| int64_t start_ticks; |
| int64_t bytes_sent; |
| } SpiceRateCtl; |
| |
| typedef struct SpiceVoiceOut { |
| HWVoiceOut hw; |
| SpicePlaybackInstance sin; |
| SpiceRateCtl rate; |
| int active; |
| uint32_t *frame; |
| uint32_t *fpos; |
| uint32_t fsize; |
| } SpiceVoiceOut; |
| |
| typedef struct SpiceVoiceIn { |
| HWVoiceIn hw; |
| SpiceRecordInstance sin; |
| SpiceRateCtl rate; |
| int active; |
| uint32_t samples[LINE_IN_SAMPLES]; |
| } SpiceVoiceIn; |
| |
| static const SpicePlaybackInterface playback_sif = { |
| .base.type = SPICE_INTERFACE_PLAYBACK, |
| .base.description = "playback", |
| .base.major_version = SPICE_INTERFACE_PLAYBACK_MAJOR, |
| .base.minor_version = SPICE_INTERFACE_PLAYBACK_MINOR, |
| }; |
| |
| static const SpiceRecordInterface record_sif = { |
| .base.type = SPICE_INTERFACE_RECORD, |
| .base.description = "record", |
| .base.major_version = SPICE_INTERFACE_RECORD_MAJOR, |
| .base.minor_version = SPICE_INTERFACE_RECORD_MINOR, |
| }; |
| |
| static void *spice_audio_init(Audiodev *dev) |
| { |
| if (!using_spice) { |
| return NULL; |
| } |
| return &spice_audio_init; |
| } |
| |
| static void spice_audio_fini (void *opaque) |
| { |
| /* nothing */ |
| } |
| |
| static void rate_start (SpiceRateCtl *rate) |
| { |
| memset (rate, 0, sizeof (*rate)); |
| rate->start_ticks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| } |
| |
| static int rate_get_samples (struct audio_pcm_info *info, SpiceRateCtl *rate) |
| { |
| int64_t now; |
| int64_t ticks; |
| int64_t bytes; |
| int64_t samples; |
| |
| now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); |
| ticks = now - rate->start_ticks; |
| bytes = muldiv64(ticks, info->bytes_per_second, NANOSECONDS_PER_SECOND); |
| samples = (bytes - rate->bytes_sent) >> info->shift; |
| if (samples < 0 || samples > 65536) { |
| error_report("Resetting rate control (%" PRId64 " samples)", samples); |
| rate_start(rate); |
| samples = 0; |
| } |
| rate->bytes_sent += samples << info->shift; |
| return samples; |
| } |
| |
| /* playback */ |
| |
| static int line_out_init(HWVoiceOut *hw, struct audsettings *as, |
| void *drv_opaque) |
| { |
| SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); |
| struct audsettings settings; |
| |
| #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3 |
| settings.freq = spice_server_get_best_playback_rate(NULL); |
| #else |
| settings.freq = SPICE_INTERFACE_PLAYBACK_FREQ; |
| #endif |
| settings.nchannels = SPICE_INTERFACE_PLAYBACK_CHAN; |
| settings.fmt = AUDIO_FORMAT_S16; |
| settings.endianness = AUDIO_HOST_ENDIANNESS; |
| |
| audio_pcm_init_info (&hw->info, &settings); |
| hw->samples = LINE_OUT_SAMPLES; |
| out->active = 0; |
| |
| out->sin.base.sif = &playback_sif.base; |
| qemu_spice_add_interface (&out->sin.base); |
| #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3 |
| spice_server_set_playback_rate(&out->sin, settings.freq); |
| #endif |
| return 0; |
| } |
| |
| static void line_out_fini (HWVoiceOut *hw) |
| { |
| SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); |
| |
| spice_server_remove_interface (&out->sin.base); |
| } |
| |
| static int line_out_run (HWVoiceOut *hw, int live) |
| { |
| SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); |
| int rpos, decr; |
| int samples; |
| |
| if (!live) { |
| return 0; |
| } |
| |
| decr = rate_get_samples (&hw->info, &out->rate); |
| decr = audio_MIN (live, decr); |
| |
| samples = decr; |
| rpos = hw->rpos; |
| while (samples) { |
| int left_till_end_samples = hw->samples - rpos; |
| int len = audio_MIN (samples, left_till_end_samples); |
| |
| if (!out->frame) { |
| spice_server_playback_get_buffer (&out->sin, &out->frame, &out->fsize); |
| out->fpos = out->frame; |
| } |
| if (out->frame) { |
| len = audio_MIN (len, out->fsize); |
| hw->clip (out->fpos, hw->mix_buf + rpos, len); |
| out->fsize -= len; |
| out->fpos += len; |
| if (out->fsize == 0) { |
| spice_server_playback_put_samples (&out->sin, out->frame); |
| out->frame = out->fpos = NULL; |
| } |
| } |
| rpos = (rpos + len) % hw->samples; |
| samples -= len; |
| } |
| hw->rpos = rpos; |
| return decr; |
| } |
| |
| static int line_out_write (SWVoiceOut *sw, void *buf, int len) |
| { |
| return audio_pcm_sw_write (sw, buf, len); |
| } |
| |
| static int line_out_ctl (HWVoiceOut *hw, int cmd, ...) |
| { |
| SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); |
| |
| switch (cmd) { |
| case VOICE_ENABLE: |
| if (out->active) { |
| break; |
| } |
| out->active = 1; |
| rate_start (&out->rate); |
| spice_server_playback_start (&out->sin); |
| break; |
| case VOICE_DISABLE: |
| if (!out->active) { |
| break; |
| } |
| out->active = 0; |
| if (out->frame) { |
| memset (out->fpos, 0, out->fsize << 2); |
| spice_server_playback_put_samples (&out->sin, out->frame); |
| out->frame = out->fpos = NULL; |
| } |
| spice_server_playback_stop (&out->sin); |
| break; |
| case VOICE_VOLUME: |
| { |
| #if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)) |
| SWVoiceOut *sw; |
| va_list ap; |
| uint16_t vol[2]; |
| |
| va_start (ap, cmd); |
| sw = va_arg (ap, SWVoiceOut *); |
| va_end (ap); |
| |
| vol[0] = sw->vol.l / ((1ULL << 16) + 1); |
| vol[1] = sw->vol.r / ((1ULL << 16) + 1); |
| spice_server_playback_set_volume (&out->sin, 2, vol); |
| spice_server_playback_set_mute (&out->sin, sw->vol.mute); |
| #endif |
| break; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* record */ |
| |
| static int line_in_init(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) |
| { |
| SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); |
| struct audsettings settings; |
| |
| #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 |
| settings.freq = spice_server_get_best_record_rate(NULL); |
| #else |
| settings.freq = SPICE_INTERFACE_RECORD_FREQ; |
| #endif |
| settings.nchannels = SPICE_INTERFACE_RECORD_CHAN; |
| settings.fmt = AUDIO_FORMAT_S16; |
| settings.endianness = AUDIO_HOST_ENDIANNESS; |
| |
| audio_pcm_init_info (&hw->info, &settings); |
| hw->samples = LINE_IN_SAMPLES; |
| in->active = 0; |
| |
| in->sin.base.sif = &record_sif.base; |
| qemu_spice_add_interface (&in->sin.base); |
| #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 |
| spice_server_set_record_rate(&in->sin, settings.freq); |
| #endif |
| return 0; |
| } |
| |
| static void line_in_fini (HWVoiceIn *hw) |
| { |
| SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); |
| |
| spice_server_remove_interface (&in->sin.base); |
| } |
| |
| static int line_in_run (HWVoiceIn *hw) |
| { |
| SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); |
| int num_samples; |
| int ready; |
| int len[2]; |
| uint64_t delta_samp; |
| const uint32_t *samples; |
| |
| if (!(num_samples = hw->samples - audio_pcm_hw_get_live_in (hw))) { |
| return 0; |
| } |
| |
| delta_samp = rate_get_samples (&hw->info, &in->rate); |
| num_samples = audio_MIN (num_samples, delta_samp); |
| |
| ready = spice_server_record_get_samples (&in->sin, in->samples, num_samples); |
| samples = in->samples; |
| if (ready == 0) { |
| static const uint32_t silence[LINE_IN_SAMPLES]; |
| samples = silence; |
| ready = LINE_IN_SAMPLES; |
| } |
| |
| num_samples = audio_MIN (ready, num_samples); |
| |
| if (hw->wpos + num_samples > hw->samples) { |
| len[0] = hw->samples - hw->wpos; |
| len[1] = num_samples - len[0]; |
| } else { |
| len[0] = num_samples; |
| len[1] = 0; |
| } |
| |
| hw->conv (hw->conv_buf + hw->wpos, samples, len[0]); |
| |
| if (len[1]) { |
| hw->conv (hw->conv_buf, samples + len[0], len[1]); |
| } |
| |
| hw->wpos = (hw->wpos + num_samples) % hw->samples; |
| |
| return num_samples; |
| } |
| |
| static int line_in_read (SWVoiceIn *sw, void *buf, int size) |
| { |
| return audio_pcm_sw_read (sw, buf, size); |
| } |
| |
| static int line_in_ctl (HWVoiceIn *hw, int cmd, ...) |
| { |
| SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); |
| |
| switch (cmd) { |
| case VOICE_ENABLE: |
| if (in->active) { |
| break; |
| } |
| in->active = 1; |
| rate_start (&in->rate); |
| spice_server_record_start (&in->sin); |
| break; |
| case VOICE_DISABLE: |
| if (!in->active) { |
| break; |
| } |
| in->active = 0; |
| spice_server_record_stop (&in->sin); |
| break; |
| case VOICE_VOLUME: |
| { |
| #if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2)) |
| SWVoiceIn *sw; |
| va_list ap; |
| uint16_t vol[2]; |
| |
| va_start (ap, cmd); |
| sw = va_arg (ap, SWVoiceIn *); |
| va_end (ap); |
| |
| vol[0] = sw->vol.l / ((1ULL << 16) + 1); |
| vol[1] = sw->vol.r / ((1ULL << 16) + 1); |
| spice_server_record_set_volume (&in->sin, 2, vol); |
| spice_server_record_set_mute (&in->sin, sw->vol.mute); |
| #endif |
| break; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static struct audio_pcm_ops audio_callbacks = { |
| .init_out = line_out_init, |
| .fini_out = line_out_fini, |
| .run_out = line_out_run, |
| .write = line_out_write, |
| .ctl_out = line_out_ctl, |
| |
| .init_in = line_in_init, |
| .fini_in = line_in_fini, |
| .run_in = line_in_run, |
| .read = line_in_read, |
| .ctl_in = line_in_ctl, |
| }; |
| |
| static struct audio_driver spice_audio_driver = { |
| .name = "spice", |
| .descr = "spice audio driver", |
| .init = spice_audio_init, |
| .fini = spice_audio_fini, |
| .pcm_ops = &audio_callbacks, |
| .max_voices_out = 1, |
| .max_voices_in = 1, |
| .voice_size_out = sizeof (SpiceVoiceOut), |
| .voice_size_in = sizeof (SpiceVoiceIn), |
| #if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)) |
| .ctl_caps = VOICE_VOLUME_CAP |
| #endif |
| }; |
| |
| void qemu_spice_audio_init (void) |
| { |
| spice_audio_driver.can_be_default = 1; |
| } |
| |
| static void register_audio_spice(void) |
| { |
| audio_driver_register(&spice_audio_driver); |
| } |
| type_init(register_audio_spice); |