420 lines
11 KiB
C
420 lines
11 KiB
C
/*
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* Copyright (C) 2010 Red Hat, Inc.
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*
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* maintained by Gerd Hoffmann <kraxel@redhat.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "hw/hw.h"
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#include "qemu/host-utils.h"
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#include "qemu/error-report.h"
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#include "qemu/timer.h"
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#include "ui/qemu-spice.h"
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#define AUDIO_CAP "spice"
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#include "audio.h"
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#include "audio_int.h"
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#if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3
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#define LINE_OUT_SAMPLES (480 * 4)
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#else
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#define LINE_OUT_SAMPLES (256 * 4)
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#endif
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#if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3
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#define LINE_IN_SAMPLES (480 * 4)
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#else
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#define LINE_IN_SAMPLES (256 * 4)
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#endif
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typedef struct SpiceRateCtl {
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int64_t start_ticks;
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int64_t bytes_sent;
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} SpiceRateCtl;
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typedef struct SpiceVoiceOut {
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HWVoiceOut hw;
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SpicePlaybackInstance sin;
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SpiceRateCtl rate;
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int active;
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uint32_t *frame;
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uint32_t *fpos;
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uint32_t fsize;
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} SpiceVoiceOut;
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typedef struct SpiceVoiceIn {
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HWVoiceIn hw;
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SpiceRecordInstance sin;
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SpiceRateCtl rate;
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int active;
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uint32_t samples[LINE_IN_SAMPLES];
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} SpiceVoiceIn;
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static const SpicePlaybackInterface playback_sif = {
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.base.type = SPICE_INTERFACE_PLAYBACK,
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.base.description = "playback",
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.base.major_version = SPICE_INTERFACE_PLAYBACK_MAJOR,
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.base.minor_version = SPICE_INTERFACE_PLAYBACK_MINOR,
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};
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static const SpiceRecordInterface record_sif = {
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.base.type = SPICE_INTERFACE_RECORD,
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.base.description = "record",
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.base.major_version = SPICE_INTERFACE_RECORD_MAJOR,
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.base.minor_version = SPICE_INTERFACE_RECORD_MINOR,
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};
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static void *spice_audio_init (void)
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{
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if (!using_spice) {
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return NULL;
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}
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return &spice_audio_init;
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}
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static void spice_audio_fini (void *opaque)
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{
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/* nothing */
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}
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static void rate_start (SpiceRateCtl *rate)
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{
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memset (rate, 0, sizeof (*rate));
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rate->start_ticks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
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}
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static int rate_get_samples (struct audio_pcm_info *info, SpiceRateCtl *rate)
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{
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int64_t now;
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int64_t ticks;
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int64_t bytes;
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int64_t samples;
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now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
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ticks = now - rate->start_ticks;
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bytes = muldiv64(ticks, info->bytes_per_second, NANOSECONDS_PER_SECOND);
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samples = (bytes - rate->bytes_sent) >> info->shift;
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if (samples < 0 || samples > 65536) {
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error_report("Resetting rate control (%" PRId64 " samples)", samples);
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rate_start(rate);
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samples = 0;
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}
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rate->bytes_sent += samples << info->shift;
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return samples;
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}
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/* playback */
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static int line_out_init(HWVoiceOut *hw, struct audsettings *as,
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void *drv_opaque)
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{
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SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
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struct audsettings settings;
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#if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3
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settings.freq = spice_server_get_best_playback_rate(NULL);
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#else
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settings.freq = SPICE_INTERFACE_PLAYBACK_FREQ;
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#endif
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settings.nchannels = SPICE_INTERFACE_PLAYBACK_CHAN;
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settings.fmt = AUD_FMT_S16;
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settings.endianness = AUDIO_HOST_ENDIANNESS;
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audio_pcm_init_info (&hw->info, &settings);
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hw->samples = LINE_OUT_SAMPLES;
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out->active = 0;
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out->sin.base.sif = &playback_sif.base;
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qemu_spice_add_interface (&out->sin.base);
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#if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3
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spice_server_set_playback_rate(&out->sin, settings.freq);
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#endif
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return 0;
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}
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static void line_out_fini (HWVoiceOut *hw)
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{
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SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
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spice_server_remove_interface (&out->sin.base);
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}
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static int line_out_run (HWVoiceOut *hw, int live)
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{
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SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
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int rpos, decr;
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int samples;
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if (!live) {
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return 0;
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}
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decr = rate_get_samples (&hw->info, &out->rate);
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decr = audio_MIN (live, decr);
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samples = decr;
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rpos = hw->rpos;
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while (samples) {
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int left_till_end_samples = hw->samples - rpos;
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int len = audio_MIN (samples, left_till_end_samples);
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if (!out->frame) {
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spice_server_playback_get_buffer (&out->sin, &out->frame, &out->fsize);
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out->fpos = out->frame;
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}
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if (out->frame) {
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len = audio_MIN (len, out->fsize);
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hw->clip (out->fpos, hw->mix_buf + rpos, len);
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out->fsize -= len;
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out->fpos += len;
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if (out->fsize == 0) {
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spice_server_playback_put_samples (&out->sin, out->frame);
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out->frame = out->fpos = NULL;
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}
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}
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rpos = (rpos + len) % hw->samples;
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samples -= len;
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}
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hw->rpos = rpos;
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return decr;
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}
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static int line_out_write (SWVoiceOut *sw, void *buf, int len)
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{
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return audio_pcm_sw_write (sw, buf, len);
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}
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static int line_out_ctl (HWVoiceOut *hw, int cmd, ...)
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{
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SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
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switch (cmd) {
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case VOICE_ENABLE:
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if (out->active) {
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break;
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}
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out->active = 1;
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rate_start (&out->rate);
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spice_server_playback_start (&out->sin);
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break;
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case VOICE_DISABLE:
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if (!out->active) {
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break;
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}
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out->active = 0;
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if (out->frame) {
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memset (out->fpos, 0, out->fsize << 2);
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spice_server_playback_put_samples (&out->sin, out->frame);
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out->frame = out->fpos = NULL;
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}
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spice_server_playback_stop (&out->sin);
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break;
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case VOICE_VOLUME:
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{
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#if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2))
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SWVoiceOut *sw;
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va_list ap;
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uint16_t vol[2];
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va_start (ap, cmd);
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sw = va_arg (ap, SWVoiceOut *);
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va_end (ap);
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vol[0] = sw->vol.l / ((1ULL << 16) + 1);
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vol[1] = sw->vol.r / ((1ULL << 16) + 1);
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spice_server_playback_set_volume (&out->sin, 2, vol);
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spice_server_playback_set_mute (&out->sin, sw->vol.mute);
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#endif
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break;
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}
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}
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return 0;
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}
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/* record */
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static int line_in_init(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
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{
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SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
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struct audsettings settings;
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#if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3
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settings.freq = spice_server_get_best_record_rate(NULL);
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#else
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settings.freq = SPICE_INTERFACE_RECORD_FREQ;
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#endif
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settings.nchannels = SPICE_INTERFACE_RECORD_CHAN;
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settings.fmt = AUD_FMT_S16;
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settings.endianness = AUDIO_HOST_ENDIANNESS;
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audio_pcm_init_info (&hw->info, &settings);
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hw->samples = LINE_IN_SAMPLES;
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in->active = 0;
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in->sin.base.sif = &record_sif.base;
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qemu_spice_add_interface (&in->sin.base);
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#if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3
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spice_server_set_record_rate(&in->sin, settings.freq);
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#endif
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return 0;
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}
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static void line_in_fini (HWVoiceIn *hw)
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{
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SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
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spice_server_remove_interface (&in->sin.base);
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}
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static int line_in_run (HWVoiceIn *hw)
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{
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SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
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int num_samples;
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int ready;
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int len[2];
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uint64_t delta_samp;
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const uint32_t *samples;
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if (!(num_samples = hw->samples - audio_pcm_hw_get_live_in (hw))) {
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return 0;
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}
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delta_samp = rate_get_samples (&hw->info, &in->rate);
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num_samples = audio_MIN (num_samples, delta_samp);
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ready = spice_server_record_get_samples (&in->sin, in->samples, num_samples);
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samples = in->samples;
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if (ready == 0) {
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static const uint32_t silence[LINE_IN_SAMPLES];
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samples = silence;
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ready = LINE_IN_SAMPLES;
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}
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num_samples = audio_MIN (ready, num_samples);
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if (hw->wpos + num_samples > hw->samples) {
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len[0] = hw->samples - hw->wpos;
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len[1] = num_samples - len[0];
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} else {
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len[0] = num_samples;
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len[1] = 0;
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}
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hw->conv (hw->conv_buf + hw->wpos, samples, len[0]);
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if (len[1]) {
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hw->conv (hw->conv_buf, samples + len[0], len[1]);
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}
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hw->wpos = (hw->wpos + num_samples) % hw->samples;
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return num_samples;
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}
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static int line_in_read (SWVoiceIn *sw, void *buf, int size)
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{
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return audio_pcm_sw_read (sw, buf, size);
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}
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static int line_in_ctl (HWVoiceIn *hw, int cmd, ...)
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{
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SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
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switch (cmd) {
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case VOICE_ENABLE:
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if (in->active) {
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break;
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}
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in->active = 1;
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rate_start (&in->rate);
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spice_server_record_start (&in->sin);
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break;
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case VOICE_DISABLE:
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if (!in->active) {
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break;
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}
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in->active = 0;
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spice_server_record_stop (&in->sin);
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break;
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case VOICE_VOLUME:
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{
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#if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2))
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SWVoiceIn *sw;
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va_list ap;
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uint16_t vol[2];
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va_start (ap, cmd);
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sw = va_arg (ap, SWVoiceIn *);
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va_end (ap);
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vol[0] = sw->vol.l / ((1ULL << 16) + 1);
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vol[1] = sw->vol.r / ((1ULL << 16) + 1);
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spice_server_record_set_volume (&in->sin, 2, vol);
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spice_server_record_set_mute (&in->sin, sw->vol.mute);
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#endif
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break;
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}
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}
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return 0;
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}
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static struct audio_option audio_options[] = {
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{ /* end of list */ },
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};
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static struct audio_pcm_ops audio_callbacks = {
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.init_out = line_out_init,
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.fini_out = line_out_fini,
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.run_out = line_out_run,
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.write = line_out_write,
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.ctl_out = line_out_ctl,
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.init_in = line_in_init,
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.fini_in = line_in_fini,
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.run_in = line_in_run,
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.read = line_in_read,
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.ctl_in = line_in_ctl,
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};
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static struct audio_driver spice_audio_driver = {
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.name = "spice",
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.descr = "spice audio driver",
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.options = audio_options,
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.init = spice_audio_init,
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.fini = spice_audio_fini,
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.pcm_ops = &audio_callbacks,
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.max_voices_out = 1,
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.max_voices_in = 1,
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.voice_size_out = sizeof (SpiceVoiceOut),
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.voice_size_in = sizeof (SpiceVoiceIn),
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#if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2))
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.ctl_caps = VOICE_VOLUME_CAP
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#endif
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};
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void qemu_spice_audio_init (void)
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{
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spice_audio_driver.can_be_default = 1;
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}
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static void register_audio_spice(void)
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{
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audio_driver_register(&spice_audio_driver);
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}
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type_init(register_audio_spice);
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