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-rw-r--r--audio/spiceaudio.c321
1 files changed, 321 insertions, 0 deletions
diff --git a/audio/spiceaudio.c b/audio/spiceaudio.c
new file mode 100644
index 000000000..a8d370fe6
--- /dev/null
+++ b/audio/spiceaudio.c
@@ -0,0 +1,321 @@
+/*
+ * 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 SpiceVoiceOut {
+ HWVoiceOut hw;
+ SpicePlaybackInstance sin;
+ RateCtl rate;
+ int active;
+ uint32_t *frame;
+ uint32_t fpos;
+ uint32_t fsize;
+} SpiceVoiceOut;
+
+typedef struct SpiceVoiceIn {
+ HWVoiceIn hw;
+ SpiceRecordInstance sin;
+ RateCtl rate;
+ int active;
+} 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 */
+}
+
+/* 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 void *line_out_get_buffer(HWVoiceOut *hw, size_t *size)
+{
+ SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
+
+ if (!out->frame) {
+ spice_server_playback_get_buffer(&out->sin, &out->frame, &out->fsize);
+ out->fpos = 0;
+ }
+
+ if (out->frame) {
+ *size = MIN((out->fsize - out->fpos) << 2, *size);
+ }
+
+ *size = audio_rate_get_bytes(&hw->info, &out->rate, *size);
+
+ return out->frame + out->fpos;
+}
+
+static size_t line_out_put_buffer(HWVoiceOut *hw, void *buf, size_t size)
+{
+ SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
+
+ if (buf) {
+ assert(buf == out->frame + out->fpos && out->fpos <= out->fsize);
+ out->fpos += size >> 2;
+
+ if (out->fpos == out->fsize) { /* buffer full */
+ spice_server_playback_put_samples(&out->sin, out->frame);
+ out->frame = NULL;
+ }
+ }
+
+ return size;
+}
+
+static void line_out_enable(HWVoiceOut *hw, bool enable)
+{
+ SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
+
+ if (enable) {
+ if (out->active) {
+ return;
+ }
+ out->active = 1;
+ audio_rate_start(&out->rate);
+ spice_server_playback_start (&out->sin);
+ } else {
+ if (!out->active) {
+ return;
+ }
+ out->active = 0;
+ if (out->frame) {
+ memset(out->frame + out->fpos, 0, (out->fsize - out->fpos) << 2);
+ spice_server_playback_put_samples (&out->sin, out->frame);
+ out->frame = NULL;
+ }
+ spice_server_playback_stop (&out->sin);
+ }
+}
+
+#if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2))
+static void line_out_volume(HWVoiceOut *hw, Volume *vol)
+{
+ SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
+ uint16_t svol[2];
+
+ assert(vol->channels == 2);
+ svol[0] = vol->vol[0] * 257;
+ svol[1] = vol->vol[1] * 257;
+ spice_server_playback_set_volume(&out->sin, 2, svol);
+ spice_server_playback_set_mute(&out->sin, vol->mute);
+}
+#endif
+
+/* 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 size_t line_in_read(HWVoiceIn *hw, void *buf, size_t len)
+{
+ SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
+ uint64_t to_read = audio_rate_get_bytes(&hw->info, &in->rate, len) >> 2;
+ size_t ready = spice_server_record_get_samples(&in->sin, buf, to_read);
+
+ /* XXX: do we need this? */
+ if (ready == 0) {
+ memset(buf, 0, to_read << 2);
+ ready = to_read;
+ }
+
+ return ready << 2;
+}
+
+static void line_in_enable(HWVoiceIn *hw, bool enable)
+{
+ SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
+
+ if (enable) {
+ if (in->active) {
+ return;
+ }
+ in->active = 1;
+ audio_rate_start(&in->rate);
+ spice_server_record_start (&in->sin);
+ } else {
+ if (!in->active) {
+ return;
+ }
+ in->active = 0;
+ spice_server_record_stop (&in->sin);
+ }
+}
+
+#if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2))
+static void line_in_volume(HWVoiceIn *hw, Volume *vol)
+{
+ SpiceVoiceIn *in = container_of(hw, SpiceVoiceIn, hw);
+ uint16_t svol[2];
+
+ assert(vol->channels == 2);
+ svol[0] = vol->vol[0] * 257;
+ svol[1] = vol->vol[1] * 257;
+ spice_server_record_set_volume(&in->sin, 2, svol);
+ spice_server_record_set_mute(&in->sin, vol->mute);
+}
+#endif
+
+static struct audio_pcm_ops audio_callbacks = {
+ .init_out = line_out_init,
+ .fini_out = line_out_fini,
+ .write = audio_generic_write,
+ .get_buffer_out = line_out_get_buffer,
+ .put_buffer_out = line_out_put_buffer,
+ .enable_out = line_out_enable,
+#if (SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && \
+ (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)
+ .volume_out = line_out_volume,
+#endif
+
+ .init_in = line_in_init,
+ .fini_in = line_in_fini,
+ .read = line_in_read,
+ .run_buffer_in = audio_generic_run_buffer_in,
+ .enable_in = line_in_enable,
+#if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2))
+ .volume_in = line_in_volume,
+#endif
+};
+
+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),
+};
+
+static void register_audio_spice(void)
+{
+ audio_driver_register(&spice_audio_driver);
+}
+type_init(register_audio_spice);
+
+module_dep("ui-spice-core");