---
Makefile.objs | 1 +
audio/audio.c | 3 +
audio/audio_int.h | 1 +
audio/spiceaudio.c | 315 ++++++++++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 320 insertions(+), 0 deletions(-)
create mode 100644 audio/spiceaudio.c
diff --git a/Makefile.objs b/Makefile.objs
index ab1af88..b11db4c 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -84,6 +84,7 @@ common-obj-$(CONFIG_POSIX) += migration-exec.o
migration-unix.o migration-fd.o
audio-obj-y = audio.o noaudio.o wavaudio.o mixeng.o
audio-obj-$(CONFIG_SDL) += sdlaudio.o
audio-obj-$(CONFIG_OSS) += ossaudio.o
+audio-obj-$(CONFIG_SPICE) += spiceaudio.o
audio-obj-$(CONFIG_COREAUDIO) += coreaudio.o
audio-obj-$(CONFIG_ALSA) += alsaaudio.o
audio-obj-$(CONFIG_DSOUND) += dsoundaudio.o
diff --git a/audio/audio.c b/audio/audio.c
index dbf0b96..67fc1d3 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -45,6 +45,9 @@
*/
static struct audio_driver *drvtab[] = {
CONFIG_AUDIO_DRIVERS
+#ifdef CONFIG_SPICE
+ &spice_audio_driver,
+#endif
&no_audio_driver,
&wav_audio_driver
};
diff --git a/audio/audio_int.h b/audio/audio_int.h
index 06e313f..d1f6c2d 100644
--- a/audio/audio_int.h
+++ b/audio/audio_int.h
@@ -209,6 +209,7 @@ extern struct audio_driver coreaudio_audio_driver;
extern struct audio_driver dsound_audio_driver;
extern struct audio_driver esd_audio_driver;
extern struct audio_driver pa_audio_driver;
+extern struct audio_driver spice_audio_driver;
extern struct audio_driver winwave_audio_driver;
extern struct mixeng_volume nominal_volume;
diff --git a/audio/spiceaudio.c b/audio/spiceaudio.c
new file mode 100644
index 0000000..0e18f2f
--- /dev/null
+++ b/audio/spiceaudio.c
@@ -0,0 +1,315 @@
+#include "hw/hw.h"
+#include "qemu-timer.h"
+#include "qemu-spice.h"
+
+#define AUDIO_CAP "spice"
+#include "audio.h"
+#include "audio_int.h"
+
+#define LINE_IN_SAMPLES 1024
+#define LINE_OUT_SAMPLES 1024
+
+typedef struct SpiceVoiceOut {
+ HWVoiceOut hw;
+ SpicePlaybackInstance sin;
+ uint32_t *frame;
+ uint32_t *fpos;
+ uint32_t fsize;
+ uint64_t prev_ticks;
+ int active;
+} SpiceVoiceOut;
+
+typedef struct SpiceVoiceIn {
+ HWVoiceIn hw;
+ SpiceRecordInstance sin;
+ uint64_t prev_ticks;
+ int active;
+ uint32_t samples[LINE_IN_SAMPLES];
+} SpiceVoiceIn;
+
+static 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 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(void)
+{
+ if (!using_spice)
+ return NULL;
+ return qemu_malloc(42);
+}
+
+static void spice_audio_fini(void *opaque)
+{
+ qemu_free(opaque);
+}
+
+static uint64_t get_monotonic_time(void)
+{
+ struct timespec time_space;
+ clock_gettime(CLOCK_MONOTONIC, &time_space);
+ return (uint64_t)time_space.tv_sec * 1000 * 1000 * 1000 +
time_space.tv_nsec;
+}
+
+/* playback */
+
+static int line_out_init(HWVoiceOut *hw, struct audsettings *as)
+{
+ SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
+ struct audsettings settings;
+
+ settings.freq = SPICE_INTERFACE_PLAYBACK_FREQ;
+ settings.nchannels = SPICE_INTERFACE_PLAYBACK_CHAN;
+ settings.fmt = AUD_FMT_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;
+ spice_server_add_interface(spice_server, &out->sin.base);
+ 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;
+ uint64_t now;
+ uint64_t ticks;
+ uint64_t bytes;
+
+ if (!live) {
+ return 0;
+ }
+
+ now = get_monotonic_time();
+ ticks = now - out->prev_ticks;
+ bytes = (ticks * hw->info.bytes_per_second) / (1000 * 1000 * 1000);
+ out->prev_ticks = now;
+
+ decr = (bytes > INT_MAX)
+ ? INT_MAX >> hw->info.shift
+ : (bytes + (1 << (hw->info.shift - 1))) >> hw->info.shift;
+ 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;
+ out->prev_ticks = get_monotonic_time();
+ 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;
+ }
+ return 0;
+}
+
+/* record */
+
+static int line_in_init(HWVoiceIn *hw, struct audsettings *as)
+{
+ SpiceVoiceIn *in = container_of(hw, SpiceVoiceIn, hw);
+ struct audsettings settings;
+
+ settings.freq = SPICE_INTERFACE_RECORD_FREQ;
+ settings.nchannels = SPICE_INTERFACE_RECORD_CHAN;
+ settings.fmt = AUD_FMT_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;
+ spice_server_add_interface(spice_server, &in->sin.base);
+ 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 now;
+ uint64_t ticks;
+ uint64_t delta_samp;
+ uint32_t *samples;
+
+ if (!(num_samples = hw->samples - audio_pcm_hw_get_live_in(hw))) {
+ return 0;
+ }
+
+ now = get_monotonic_time();
+ ticks = now - in->prev_ticks;
+ in->prev_ticks = now;
+ delta_samp = (ticks * hw->info.bytes_per_second) / (1000 * 1000 * 1000);
+ delta_samp = (delta_samp + (1 << (hw->info.shift - 1))) >> hw->info.shift;
+
+ 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 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], &nominal_volume);
+
+ if (len[1]) {
+ hw->conv(hw->conv_buf, samples + len[0], len[1],
+ &nominal_volume);
+ }
+
+ 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;
+ in->prev_ticks = get_monotonic_time();
+ spice_server_record_start(&in->sin);
+ break;
+ case VOICE_DISABLE:
+ if (!in->active) {
+ break;
+ }
+ in->active = 0;
+ spice_server_record_stop(&in->sin);
+ break;
+ }
+ return 0;
+}
+
+static struct audio_option audio_options[] = {
+ { /* end of list */ },
+};
+
+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,
+};
+
+struct audio_driver spice_audio_driver = {
+ .name = "spice",
+ .descr = "spice audio driver",
+ .options = audio_options,
+ .init = spice_audio_init,
+ .fini = spice_audio_fini,
+ .pcm_ops = &audio_callbacks,
+ .can_be_default = 1,
+ .max_voices_out = 1,
+ .max_voices_in = 1,
+ .voice_size_out = sizeof(SpiceVoiceOut),
+ .voice_size_in = sizeof(SpiceVoiceIn),
+};
--
1.6.6.1
