319 lines
8.9 KiB
C
319 lines
8.9 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 "qemu/host-utils.h"
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#include "qemu/module.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 SpiceVoiceOut {
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HWVoiceOut hw;
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SpicePlaybackInstance sin;
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RateCtl 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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RateCtl rate;
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int active;
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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(Audiodev *dev)
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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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/* 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 = AUDIO_FORMAT_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 void *line_out_get_buffer(HWVoiceOut *hw, size_t *size)
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{
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SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
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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 = 0;
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}
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if (out->frame) {
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*size = MIN((out->fsize - out->fpos) << 2, *size);
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}
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*size = audio_rate_get_bytes(&hw->info, &out->rate, *size);
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return out->frame + out->fpos;
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}
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static size_t line_out_put_buffer(HWVoiceOut *hw, void *buf, size_t size)
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{
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SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
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if (buf) {
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assert(buf == out->frame + out->fpos && out->fpos <= out->fsize);
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out->fpos += size >> 2;
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if (out->fpos == out->fsize) { /* buffer full */
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spice_server_playback_put_samples(&out->sin, out->frame);
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out->frame = NULL;
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}
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}
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return size;
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}
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static void line_out_enable(HWVoiceOut *hw, bool enable)
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{
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SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
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if (enable) {
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if (out->active) {
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return;
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}
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out->active = 1;
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audio_rate_start(&out->rate);
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spice_server_playback_start (&out->sin);
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} else {
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if (!out->active) {
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return;
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}
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out->active = 0;
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if (out->frame) {
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memset(out->frame + out->fpos, 0, (out->fsize - out->fpos) << 2);
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spice_server_playback_put_samples (&out->sin, out->frame);
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out->frame = NULL;
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}
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spice_server_playback_stop (&out->sin);
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}
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}
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#if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2))
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static void line_out_volume(HWVoiceOut *hw, Volume *vol)
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{
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SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
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uint16_t svol[2];
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assert(vol->channels == 2);
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svol[0] = vol->vol[0] * 257;
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svol[1] = vol->vol[1] * 257;
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spice_server_playback_set_volume(&out->sin, 2, svol);
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spice_server_playback_set_mute(&out->sin, vol->mute);
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}
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#endif
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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 = AUDIO_FORMAT_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 size_t line_in_read(HWVoiceIn *hw, void *buf, size_t len)
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{
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SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
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uint64_t to_read = audio_rate_get_bytes(&hw->info, &in->rate, len) >> 2;
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size_t ready = spice_server_record_get_samples(&in->sin, buf, to_read);
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/* XXX: do we need this? */
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if (ready == 0) {
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memset(buf, 0, to_read << 2);
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ready = to_read;
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}
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return ready << 2;
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}
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static void line_in_enable(HWVoiceIn *hw, bool enable)
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{
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SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
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if (enable) {
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if (in->active) {
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return;
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}
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in->active = 1;
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audio_rate_start(&in->rate);
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spice_server_record_start (&in->sin);
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} else {
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if (!in->active) {
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return;
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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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}
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}
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#if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2))
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static void line_in_volume(HWVoiceIn *hw, Volume *vol)
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{
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SpiceVoiceIn *in = container_of(hw, SpiceVoiceIn, hw);
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uint16_t svol[2];
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assert(vol->channels == 2);
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svol[0] = vol->vol[0] * 257;
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svol[1] = vol->vol[1] * 257;
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spice_server_record_set_volume(&in->sin, 2, svol);
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spice_server_record_set_mute(&in->sin, vol->mute);
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}
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#endif
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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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.write = audio_generic_write,
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.get_buffer_out = line_out_get_buffer,
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.put_buffer_out = line_out_put_buffer,
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.enable_out = line_out_enable,
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#if (SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && \
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(SPICE_INTERFACE_PLAYBACK_MINOR >= 2)
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.volume_out = line_out_volume,
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#endif
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.init_in = line_in_init,
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.fini_in = line_in_fini,
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.read = line_in_read,
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.enable_in = line_in_enable,
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#if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2))
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.volume_in = line_in_volume,
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#endif
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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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.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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};
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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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