Edwin Zhai
2005-Dec-20 09:34 UTC
[Xen-devel] [PATCH] Add sound blaster support in device model
Add sound blaster support in device model
Signed-off-by: Zhai Edwin <edwin.zhai@intel.com>
diff -r 1283d309a603 tools/examples/xmexample.vmx
--- a/tools/examples/xmexample.vmx Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/examples/xmexample.vmx Tue Dec 20 16:58:20 2005 +0800
@@ -135,7 +135,7 @@
#-----------------------------------------------------------------------------
# enable audio support
-#enable-audio=1
+#audio=1
#-----------------------------------------------------------------------------
diff -r 1283d309a603 tools/ioemu/hw/pc.c
--- a/tools/ioemu/hw/pc.c Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/hw/pc.c Tue Dec 20 16:58:20 2005 +0800
@@ -563,6 +563,15 @@
kbd_init();
DMA_init(0);
+
+ if (audio_enabled) {
+ AUD_init();
+#ifdef USE_SB16
+ if (sb16_enabled)
+ SB16_init();
+#endif
+ }
+
floppy_controller = fdctrl_init(6, 2, 0, 0x3f0, fd_table);
diff -r 1283d309a603 tools/ioemu/target-i386-dm/Makefile
--- a/tools/ioemu/target-i386-dm/Makefile Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/target-i386-dm/Makefile Tue Dec 20 16:58:20 2005 +0800
@@ -272,6 +272,7 @@
VL_OBJS+= ide.o ne2000.o pckbd.o vga.o dma.o
VL_OBJS+= fdc.o mc146818rtc.o serial.o i8259_stub.o i8254.o pc.o port-e9.o
VL_OBJS+= cirrus_vga.o pcnet.o
+VL_OBJS+= $(SOUND_HW) $(AUDIODRV) mixeng.o
ifeq ($(TARGET_ARCH), ppc)
VL_OBJS+= ppc.o ide.o ne2000.o pckbd.o vga.o $(SOUND_HW) dma.o $(AUDIODRV)
diff -r 1283d309a603 tools/ioemu/vl.h
--- a/tools/ioemu/vl.h Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/vl.h Tue Dec 20 16:58:20 2005 +0800
@@ -37,6 +37,7 @@
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
+#include "audio/audio.h"
#ifndef O_LARGEFILE
#define O_LARGEFILE 0
diff -r 1283d309a603 tools/python/xen/xend/image.py
--- a/tools/python/xen/xend/image.py Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/python/xen/xend/image.py Tue Dec 20 16:58:20 2005 +0800
@@ -237,7 +237,7 @@
# Return a list of cmd line args to the device models based on the
# xm config file
def parseDeviceModelArgs(self, imageConfig, deviceConfig):
- dmargs = [ ''cdrom'', ''boot'',
''fda'', ''fdb'', ''ne2000'',
+ dmargs = [ ''cdrom'', ''boot'',
''fda'', ''fdb'', ''ne2000'',
''audio'',
''localtime'', ''serial'',
''stdvga'', ''isa'', ''vcpus'']
ret = []
for a in dmargs:
@@ -246,9 +246,10 @@
# python doesn''t allow ''-'' in variable
names
if a == ''stdvga'': a = ''std-vga''
if a == ''ne2000'': a =
''nic-ne2000''
+ if a == ''audio'': a =
''enable-audio''
# Handle booleans gracefully
- if a in [''localtime'',
''std-vga'', ''isa'',
''nic-ne2000'']:
+ if a in [''localtime'',
''std-vga'', ''isa'',
''nic-ne2000'', ''enable-audio'']:
if v != None: v = int(v)
if v: ret.append("-%s" % a)
else:
diff -r 1283d309a603 tools/python/xen/xm/create.py
--- a/tools/python/xen/xm/create.py Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/python/xen/xm/create.py Tue Dec 20 16:58:20 2005 +0800
@@ -371,6 +371,10 @@
gopts.var(''ne2000'', val=''no|yes'',
fn=set_bool, default=0,
use="Should device models use ne2000?")
+
+gopts.var(''audio'', val=''no|yes'',
+ fn=set_bool, default=0,
+ use="Should device models enable audio?")
gopts.var(''vnc'', val='''',
fn=set_value, default=None,
@@ -521,7 +525,7 @@
"""Create the config for VMX devices.
"""
args = [ ''device_model'', ''vcpus'',
''cdrom'', ''boot'', ''fda'',
''fdb'',
- ''localtime'', ''serial'',
''stdvga'', ''isa'',
''nographic'',
+ ''localtime'', ''serial'',
''stdvga'', ''isa'',
''nographic'', ''audio'',
''vnc'', ''vncviewer'',
''sdl'', ''display'',
''ne2000'', ''lapic'']
for a in args:
if (vals.__dict__[a]):
diff -r 1283d309a603 tools/ioemu/audio/audio.c
--- /dev/null Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/audio/audio.c Tue Dec 20 16:58:20 2005 +0800
@@ -0,0 +1,910 @@
+/*
+ * QEMU Audio subsystem
+ *
+ * Copyright (c) 2003-2004 Vassili Karpov (malc)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the
"Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <assert.h>
+#include "vl.h"
+
+#define USE_WAV_AUDIO
+
+#include "audio/audio_int.h"
+
+#define dolog(...) AUD_log ("audio", __VA_ARGS__)
+#ifdef DEBUG
+#define ldebug(...) dolog (__VA_ARGS__)
+#else
+#define ldebug(...)
+#endif
+
+#define QC_AUDIO_DRV "QEMU_AUDIO_DRV"
+#define QC_VOICES "QEMU_VOICES"
+#define QC_FIXED_FORMAT "QEMU_FIXED_FORMAT"
+#define QC_FIXED_FREQ "QEMU_FIXED_FREQ"
+
+static HWVoice *hw_voices;
+
+AudioState audio_state = {
+ 1, /* use fixed settings */
+ 44100, /* fixed frequency */
+ 2, /* fixed channels */
+ AUD_FMT_S16, /* fixed format */
+ 1, /* number of hw voices */
+ -1 /* voice size */
+};
+
+/* http://www.df.lth.se/~john_e/gems/gem002d.html */
+/* http://www.multi-platforms.com/Tips/PopCount.htm */
+uint32_t popcount (uint32_t u)
+{
+ u = ((u&0x55555555) + ((u>>1)&0x55555555));
+ u = ((u&0x33333333) + ((u>>2)&0x33333333));
+ u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
+ u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
+ u = ( u&0x0000ffff) + (u>>16);
+ return u;
+}
+
+inline uint32_t lsbindex (uint32_t u)
+{
+ return popcount ((u&-u)-1);
+}
+
+int audio_get_conf_int (const char *key, int defval)
+{
+ int val = defval;
+ char *strval;
+
+ strval = getenv (key);
+ if (strval) {
+ val = atoi (strval);
+ }
+
+ return val;
+}
+
+const char *audio_get_conf_str (const char *key, const char *defval)
+{
+ const char *val = getenv (key);
+ if (!val)
+ return defval;
+ else
+ return val;
+}
+
+void AUD_log (const char *cap, const char *fmt, ...)
+{
+ va_list ap;
+ fprintf (stderr, "%s: ", cap);
+ va_start (ap, fmt);
+ vfprintf (stderr, fmt, ap);
+ va_end (ap);
+}
+
+/*
+ * Soft Voice
+ */
+void pcm_sw_free_resources (SWVoice *sw)
+{
+ if (sw->buf) qemu_free (sw->buf);
+ if (sw->rate) st_rate_stop (sw->rate);
+ sw->buf = NULL;
+ sw->rate = NULL;
+}
+
+int pcm_sw_alloc_resources (SWVoice *sw)
+{
+ sw->buf = qemu_mallocz (sw->hw->samples * sizeof (st_sample_t));
+ if (!sw->buf)
+ return -1;
+
+ sw->rate = st_rate_start (sw->freq, sw->hw->freq);
+ if (!sw->rate) {
+ qemu_free (sw->buf);
+ sw->buf = NULL;
+ return -1;
+ }
+ return 0;
+}
+
+void pcm_sw_fini (SWVoice *sw)
+{
+ pcm_sw_free_resources (sw);
+}
+
+int pcm_sw_init (SWVoice *sw, HWVoice *hw, int freq,
+ int nchannels, audfmt_e fmt)
+{
+ int bits = 8, sign = 0;
+
+ switch (fmt) {
+ case AUD_FMT_S8:
+ sign = 1;
+ case AUD_FMT_U8:
+ break;
+
+ case AUD_FMT_S16:
+ sign = 1;
+ case AUD_FMT_U16:
+ bits = 16;
+ break;
+ }
+
+ sw->hw = hw;
+ sw->freq = freq;
+ sw->fmt = fmt;
+ sw->nchannels = nchannels;
+ sw->shift = (nchannels == 2) + (bits == 16);
+ sw->align = (1 << sw->shift) - 1;
+ sw->left = 0;
+ sw->pos = 0;
+ sw->wpos = 0;
+ sw->live = 0;
+ sw->ratio = (sw->hw->freq * ((int64_t) INT_MAX)) / sw->freq;
+ sw->bytes_per_second = sw->freq << sw->shift;
+ sw->conv = mixeng_conv[nchannels == 2][sign][bits == 16];
+
+ pcm_sw_free_resources (sw);
+ return pcm_sw_alloc_resources (sw);
+}
+
+/* Hard voice */
+void pcm_hw_free_resources (HWVoice *hw)
+{
+ if (hw->mix_buf)
+ qemu_free (hw->mix_buf);
+ hw->mix_buf = NULL;
+}
+
+int pcm_hw_alloc_resources (HWVoice *hw)
+{
+ hw->mix_buf = qemu_mallocz (hw->samples * sizeof (st_sample_t));
+ if (!hw->mix_buf)
+ return -1;
+ return 0;
+}
+
+void pcm_hw_fini (HWVoice *hw)
+{
+ if (hw->active) {
+ ldebug ("pcm_hw_fini: %d %d %d\n", hw->freq,
hw->nchannels, hw->fmt);
+ pcm_hw_free_resources (hw);
+ hw->pcm_ops->fini (hw);
+ memset (hw, 0, audio_state.drv->voice_size);
+ }
+}
+
+void pcm_hw_gc (HWVoice *hw)
+{
+ if (hw->nb_voices)
+ return;
+
+ pcm_hw_fini (hw);
+}
+
+int pcm_hw_get_live (HWVoice *hw)
+{
+ int i, alive = 0, live = hw->samples;
+
+ for (i = 0; i < hw->nb_voices; i++) {
+ if (hw->pvoice[i]->live) {
+ live = audio_MIN (hw->pvoice[i]->live, live);
+ alive += 1;
+ }
+ }
+
+ if (alive)
+ return live;
+ else
+ return -1;
+}
+
+int pcm_hw_get_live2 (HWVoice *hw, int *nb_active)
+{
+ int i, alive = 0, live = hw->samples;
+
+ *nb_active = 0;
+ for (i = 0; i < hw->nb_voices; i++) {
+ if (hw->pvoice[i]->live) {
+ if (hw->pvoice[i]->live < live) {
+ *nb_active = hw->pvoice[i]->active != 0;
+ live = hw->pvoice[i]->live;
+ }
+ alive += 1;
+ }
+ }
+
+ if (alive)
+ return live;
+ else
+ return -1;
+}
+
+void pcm_hw_dec_live (HWVoice *hw, int decr)
+{
+ int i;
+
+ for (i = 0; i < hw->nb_voices; i++) {
+ if (hw->pvoice[i]->live) {
+ hw->pvoice[i]->live -= decr;
+ }
+ }
+}
+
+void pcm_hw_clear (HWVoice *hw, void *buf, int len)
+{
+ if (!len)
+ return;
+
+ switch (hw->fmt) {
+ case AUD_FMT_S16:
+ case AUD_FMT_S8:
+ memset (buf, len << hw->shift, 0x00);
+ break;
+
+ case AUD_FMT_U8:
+ memset (buf, len << hw->shift, 0x80);
+ break;
+
+ case AUD_FMT_U16:
+ {
+ unsigned int i;
+ uint16_t *p = buf;
+ int shift = hw->nchannels - 1;
+
+ for (i = 0; i < len << shift; i++) {
+ p[i] = INT16_MAX;
+ }
+ }
+ break;
+ }
+}
+
+int pcm_hw_write (SWVoice *sw, void *buf, int size)
+{
+ int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
+ int ret = 0, pos = 0;
+ if (!sw)
+ return size;
+
+ hwsamples = sw->hw->samples;
+ samples = size >> sw->shift;
+
+ if (!sw->live) {
+ sw->wpos = sw->hw->rpos;
+ }
+ wpos = sw->wpos;
+ live = sw->live;
+ dead = hwsamples - live;
+ swlim = (dead * ((int64_t) INT_MAX)) / sw->ratio;
+ swlim = audio_MIN (swlim, samples);
+
+ ldebug ("size=%d live=%d dead=%d swlim=%d wpos=%d\n",
+ size, live, dead, swlim, wpos);
+ if (swlim)
+ sw->conv (sw->buf, buf, swlim);
+
+ while (swlim) {
+ dead = hwsamples - live;
+ left = hwsamples - wpos;
+ blck = audio_MIN (dead, left);
+ if (!blck) {
+ /* dolog ("swlim=%d\n", swlim); */
+ break;
+ }
+ isamp = swlim;
+ osamp = blck;
+ st_rate_flow (sw->rate, sw->buf + pos, sw->hw->mix_buf +
wpos, &isamp, &osamp);
+ ret += isamp;
+ swlim -= isamp;
+ pos += isamp;
+ live += osamp;
+ wpos = (wpos + osamp) % hwsamples;
+ }
+
+ sw->wpos = wpos;
+ sw->live = live;
+ return ret << sw->shift;
+}
+
+int pcm_hw_init (HWVoice *hw, int freq, int nchannels, audfmt_e fmt)
+{
+ int sign = 0, bits = 8;
+
+ pcm_hw_fini (hw);
+ ldebug ("pcm_hw_init: %d %d %d\n", freq, nchannels, fmt);
+ if (hw->pcm_ops->init (hw, freq, nchannels, fmt)) {
+ memset (hw, 0, audio_state.drv->voice_size);
+ return -1;
+ }
+
+ switch (hw->fmt) {
+ case AUD_FMT_S8:
+ sign = 1;
+ case AUD_FMT_U8:
+ break;
+
+ case AUD_FMT_S16:
+ sign = 1;
+ case AUD_FMT_U16:
+ bits = 16;
+ break;
+ }
+
+ hw->nb_voices = 0;
+ hw->active = 1;
+ hw->shift = (hw->nchannels == 2) + (bits == 16);
+ hw->bytes_per_second = hw->freq << hw->shift;
+ hw->align = (1 << hw->shift) - 1;
+ hw->samples = hw->bufsize >> hw->shift;
+ hw->clip = mixeng_clip[hw->nchannels == 2][sign][bits == 16];
+ if (pcm_hw_alloc_resources (hw)) {
+ pcm_hw_fini (hw);
+ return -1;
+ }
+ return 0;
+}
+
+static int dist (void *hw)
+{
+ if (hw) {
+ return (((uint8_t *) hw - (uint8_t *) hw_voices)
+ / audio_state.voice_size) + 1;
+ }
+ else {
+ return 0;
+ }
+}
+
+#define ADVANCE(hw) hw ? advance (hw, audio_state.voice_size) : hw_voices
+
+HWVoice *pcm_hw_find_any (HWVoice *hw)
+{
+ int i = dist (hw);
+ for (; i < audio_state.nb_hw_voices; i++) {
+ hw = ADVANCE (hw);
+ return hw;
+ }
+ return NULL;
+}
+
+HWVoice *pcm_hw_find_any_active (HWVoice *hw)
+{
+ int i = dist (hw);
+ for (; i < audio_state.nb_hw_voices; i++) {
+ hw = ADVANCE (hw);
+ if (hw->active)
+ return hw;
+ }
+ return NULL;
+}
+
+HWVoice *pcm_hw_find_any_active_enabled (HWVoice *hw)
+{
+ int i = dist (hw);
+ for (; i < audio_state.nb_hw_voices; i++) {
+ hw = ADVANCE (hw);
+ if (hw->active && hw->enabled)
+ return hw;
+ }
+ return NULL;
+}
+
+HWVoice *pcm_hw_find_any_passive (HWVoice *hw)
+{
+ int i = dist (hw);
+ for (; i < audio_state.nb_hw_voices; i++) {
+ hw = ADVANCE (hw);
+ if (!hw->active)
+ return hw;
+ }
+ return NULL;
+}
+
+HWVoice *pcm_hw_find_specific (HWVoice *hw, int freq,
+ int nchannels, audfmt_e fmt)
+{
+ while ((hw = pcm_hw_find_any_active (hw))) {
+ if (hw->freq == freq &&
+ hw->nchannels == nchannels &&
+ hw->fmt == fmt)
+ return hw;
+ }
+ return NULL;
+}
+
+HWVoice *pcm_hw_add (int freq, int nchannels, audfmt_e fmt)
+{
+ HWVoice *hw;
+
+ if (audio_state.fixed_format) {
+ freq = audio_state.fixed_freq;
+ nchannels = audio_state.fixed_channels;
+ fmt = audio_state.fixed_fmt;
+ }
+
+ hw = pcm_hw_find_specific (NULL, freq, nchannels, fmt);
+
+ if (hw)
+ return hw;
+
+ hw = pcm_hw_find_any_passive (NULL);
+ if (hw) {
+ hw->pcm_ops = audio_state.drv->pcm_ops;
+ if (!hw->pcm_ops)
+ return NULL;
+
+ if (pcm_hw_init (hw, freq, nchannels, fmt)) {
+ pcm_hw_gc (hw);
+ return NULL;
+ }
+ else
+ return hw;
+ }
+
+ return pcm_hw_find_any (NULL);
+}
+
+int pcm_hw_add_sw (HWVoice *hw, SWVoice *sw)
+{
+ SWVoice **pvoice = qemu_mallocz ((hw->nb_voices + 1) * sizeof (sw));
+ if (!pvoice)
+ return -1;
+
+ memcpy (pvoice, hw->pvoice, hw->nb_voices * sizeof (sw));
+ qemu_free (hw->pvoice);
+ hw->pvoice = pvoice;
+ hw->pvoice[hw->nb_voices++] = sw;
+ return 0;
+}
+
+int pcm_hw_del_sw (HWVoice *hw, SWVoice *sw)
+{
+ int i, j;
+ if (hw->nb_voices > 1) {
+ SWVoice **pvoice = qemu_mallocz ((hw->nb_voices - 1) * sizeof (sw));
+
+ if (!pvoice) {
+ dolog ("Can not maintain consistent state (not enough
memory)\n");
+ return -1;
+ }
+
+ for (i = 0, j = 0; i < hw->nb_voices; i++) {
+ if (j >= hw->nb_voices - 1) {
+ dolog ("Can not maintain consistent state "
+ "(invariant violated)\n");
+ return -1;
+ }
+ if (hw->pvoice[i] != sw)
+ pvoice[j++] = hw->pvoice[i];
+ }
+ qemu_free (hw->pvoice);
+ hw->pvoice = pvoice;
+ hw->nb_voices -= 1;
+ }
+ else {
+ qemu_free (hw->pvoice);
+ hw->pvoice = NULL;
+ hw->nb_voices = 0;
+ }
+ return 0;
+}
+
+SWVoice *pcm_create_voice_pair (int freq, int nchannels, audfmt_e fmt)
+{
+ SWVoice *sw;
+ HWVoice *hw;
+
+ sw = qemu_mallocz (sizeof (*sw));
+ if (!sw)
+ goto err1;
+
+ hw = pcm_hw_add (freq, nchannels, fmt);
+ if (!hw)
+ goto err2;
+
+ if (pcm_hw_add_sw (hw, sw))
+ goto err3;
+
+ if (pcm_sw_init (sw, hw, freq, nchannels, fmt))
+ goto err4;
+
+ return sw;
+
+err4:
+ pcm_hw_del_sw (hw, sw);
+err3:
+ pcm_hw_gc (hw);
+err2:
+ qemu_free (sw);
+err1:
+ return NULL;
+}
+
+SWVoice *AUD_open (SWVoice *sw, const char *name,
+ int freq, int nchannels, audfmt_e fmt)
+{
+ if (!audio_state.drv) {
+ return NULL;
+ }
+
+ if (sw && freq == sw->freq && sw->nchannels ==
nchannels && sw->fmt == fmt) {
+ return sw;
+ }
+
+ if (sw) {
+ ldebug ("Different format %s %d %d %d\n",
+ name,
+ sw->freq == freq,
+ sw->nchannels == nchannels,
+ sw->fmt == fmt);
+ }
+
+ if (nchannels != 1 && nchannels != 2) {
+ dolog ("Bogus channel count %d for voice %s\n", nchannels,
name);
+ return NULL;
+ }
+
+ if (!audio_state.fixed_format && sw) {
+ pcm_sw_fini (sw);
+ pcm_hw_del_sw (sw->hw, sw);
+ pcm_hw_gc (sw->hw);
+ if (sw->name) {
+ qemu_free (sw->name);
+ sw->name = NULL;
+ }
+ qemu_free (sw);
+ sw = NULL;
+ }
+
+ if (sw) {
+ HWVoice *hw = sw->hw;
+ if (!hw) {
+ dolog ("Internal logic error voice %s has no hardware
store\n",
+ name);
+ return sw;
+ }
+
+ if (pcm_sw_init (sw, hw, freq, nchannels, fmt)) {
+ pcm_sw_fini (sw);
+ pcm_hw_del_sw (hw, sw);
+ pcm_hw_gc (hw);
+ if (sw->name) {
+ qemu_free (sw->name);
+ sw->name = NULL;
+ }
+ qemu_free (sw);
+ return NULL;
+ }
+ }
+ else {
+ sw = pcm_create_voice_pair (freq, nchannels, fmt);
+ if (!sw) {
+ dolog ("Failed to create voice %s\n", name);
+ return NULL;
+ }
+ }
+
+ if (sw->name) {
+ qemu_free (sw->name);
+ sw->name = NULL;
+ }
+ sw->name = qemu_strdup (name);
+ return sw;
+}
+
+void AUD_close (SWVoice *sw)
+{
+ if (!sw)
+ return;
+
+ pcm_sw_fini (sw);
+ pcm_hw_del_sw (sw->hw, sw);
+ pcm_hw_gc (sw->hw);
+ if (sw->name) {
+ qemu_free (sw->name);
+ sw->name = NULL;
+ }
+ qemu_free (sw);
+}
+
+int AUD_write (SWVoice *sw, void *buf, int size)
+{
+ int bytes;
+
+ if (!sw->hw->enabled)
+ dolog ("Writing to disabled voice %s\n", sw->name);
+ bytes = sw->hw->pcm_ops->write (sw, buf, size);
+ return bytes;
+}
+
+void AUD_run (void)
+{
+ HWVoice *hw = NULL;
+
+ while ((hw = pcm_hw_find_any_active_enabled (hw))) {
+ int i;
+ if (hw->pending_disable && pcm_hw_get_live (hw) <= 0) {
+ hw->enabled = 0;
+ hw->pcm_ops->ctl (hw, VOICE_DISABLE);
+ for (i = 0; i < hw->nb_voices; i++) {
+ hw->pvoice[i]->live = 0;
+ /* hw->pvoice[i]->old_ticks = 0; */
+ }
+ continue;
+ }
+
+ hw->pcm_ops->run (hw);
+ assert (hw->rpos < hw->samples);
+ for (i = 0; i < hw->nb_voices; i++) {
+ SWVoice *sw = hw->pvoice[i];
+ if (!sw->active && !sw->live &&
sw->old_ticks) {
+ int64_t delta = qemu_get_clock (vm_clock) - sw->old_ticks;
+ if (delta > audio_state.ticks_threshold) {
+ ldebug ("resetting old_ticks for %s\n",
sw->name);
+ sw->old_ticks = 0;
+ }
+ }
+ }
+ }
+}
+
+int AUD_get_free (SWVoice *sw)
+{
+ int free;
+
+ if (!sw)
+ return 4096;
+
+ free = ((sw->hw->samples - sw->live) << sw->hw->shift)
* sw->ratio
+ / INT_MAX;
+
+ free &= ~sw->hw->align;
+ if (!free) return 0;
+
+ return free;
+}
+
+int AUD_get_buffer_size (SWVoice *sw)
+{
+ return sw->hw->bufsize;
+}
+
+void AUD_adjust (SWVoice *sw, int bytes)
+{
+ if (!sw)
+ return;
+ sw->old_ticks += (ticks_per_sec * (int64_t) bytes) /
sw->bytes_per_second;
+}
+
+void AUD_reset (SWVoice *sw)
+{
+ sw->active = 0;
+ sw->old_ticks = 0;
+}
+
+int AUD_calc_elapsed (SWVoice *sw)
+{
+ int64_t now, delta, bytes;
+ int dead, swlim;
+
+ if (!sw)
+ return 0;
+
+ now = qemu_get_clock (vm_clock);
+ delta = now - sw->old_ticks;
+ bytes = (delta * sw->bytes_per_second) / ticks_per_sec;
+ if (delta < 0) {
+ dolog ("whoops delta(<0)=%lld\n", delta);
+ return 0;
+ }
+
+ dead = sw->hw->samples - sw->live;
+ swlim = ((dead * (int64_t) INT_MAX) / sw->ratio);
+
+ if (bytes > swlim) {
+ return swlim;
+ }
+ else {
+ return bytes;
+ }
+}
+
+void AUD_enable (SWVoice *sw, int on)
+{
+ int i;
+ HWVoice *hw;
+
+ if (!sw)
+ return;
+
+ hw = sw->hw;
+ if (on) {
+ if (!sw->live)
+ sw->wpos = sw->hw->rpos;
+ if (!sw->old_ticks) {
+ sw->old_ticks = qemu_get_clock (vm_clock);
+ }
+ }
+
+ if (sw->active != on) {
+ if (on) {
+ hw->pending_disable = 0;
+ if (!hw->enabled) {
+ hw->enabled = 1;
+ for (i = 0; i < hw->nb_voices; i++) {
+ ldebug ("resetting voice\n");
+ sw = hw->pvoice[i];
+ sw->old_ticks = qemu_get_clock (vm_clock);
+ }
+ hw->pcm_ops->ctl (hw, VOICE_ENABLE);
+ }
+ }
+ else {
+ if (hw->enabled && !hw->pending_disable) {
+ int nb_active = 0;
+ for (i = 0; i < hw->nb_voices; i++) {
+ nb_active += hw->pvoice[i]->active != 0;
+ }
+
+ if (nb_active == 1) {
+ hw->pending_disable = 1;
+ }
+ }
+ }
+ sw->active = on;
+ }
+}
+
+static struct audio_output_driver *drvtab[] = {
+#ifdef CONFIG_OSS
+ &oss_output_driver,
+#endif
+#ifdef CONFIG_FMOD
+ &fmod_output_driver,
+#endif
+#ifdef CONFIG_SDL
+ &sdl_output_driver,
+#endif
+ &no_output_driver,
+#ifdef USE_WAV_AUDIO
+ &wav_output_driver,
+#endif
+};
+
+static int voice_init (struct audio_output_driver *drv)
+{
+ audio_state.opaque = drv->init ();
+ if (audio_state.opaque) {
+ if (audio_state.nb_hw_voices > drv->max_voices) {
+ dolog ("`%s'' does not support %d multiple hardware
channels\n"
+ "Resetting to %d\n",
+ drv->name, audio_state.nb_hw_voices, drv->max_voices);
+ audio_state.nb_hw_voices = drv->max_voices;
+ }
+ hw_voices = qemu_mallocz (audio_state.nb_hw_voices *
drv->voice_size);
+ if (hw_voices) {
+ audio_state.drv = drv;
+ return 1;
+ }
+ else {
+ dolog ("Not enough memory for %d `%s'' voices (each %d
bytes)\n",
+ audio_state.nb_hw_voices, drv->name, drv->voice_size);
+ drv->fini (audio_state.opaque);
+ return 0;
+ }
+ }
+ else {
+ dolog ("Could not init `%s'' audio\n", drv->name);
+ return 0;
+ }
+}
+
+static void audio_vm_stop_handler (void *opaque, int reason)
+{
+ HWVoice *hw = NULL;
+
+ while ((hw = pcm_hw_find_any (hw))) {
+ if (!hw->pcm_ops)
+ continue;
+
+ hw->pcm_ops->ctl (hw, reason ? VOICE_ENABLE : VOICE_DISABLE);
+ }
+}
+
+static void audio_atexit (void)
+{
+ HWVoice *hw = NULL;
+
+ while ((hw = pcm_hw_find_any (hw))) {
+ if (!hw->pcm_ops)
+ continue;
+
+ hw->pcm_ops->ctl (hw, VOICE_DISABLE);
+ hw->pcm_ops->fini (hw);
+ }
+ audio_state.drv->fini (audio_state.opaque);
+}
+
+static void audio_save (QEMUFile *f, void *opaque)
+{
+}
+
+static int audio_load (QEMUFile *f, void *opaque, int version_id)
+{
+ if (version_id != 1)
+ return -EINVAL;
+
+ return 0;
+}
+
+void AUD_init (void)
+{
+ int i;
+ int done = 0;
+ const char *drvname;
+
+ audio_state.fixed_format + !!audio_get_conf_int (QC_FIXED_FORMAT,
audio_state.fixed_format);
+ audio_state.fixed_freq + audio_get_conf_int (QC_FIXED_FREQ,
audio_state.fixed_freq);
+ audio_state.nb_hw_voices + audio_get_conf_int (QC_VOICES,
audio_state.nb_hw_voices);
+
+ if (audio_state.nb_hw_voices <= 0) {
+ dolog ("Bogus number of voices %d, resetting to 1\n",
+ audio_state.nb_hw_voices);
+ }
+
+ drvname = audio_get_conf_str (QC_AUDIO_DRV, NULL);
+ if (drvname) {
+ int found = 0;
+ for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
+ if (!strcmp (drvname, drvtab[i]->name)) {
+ done = voice_init (drvtab[i]);
+ found = 1;
+ break;
+ }
+ }
+ if (!found) {
+ dolog ("Unknown audio driver `%s''\n", drvname);
+ }
+ }
+
+ qemu_add_vm_stop_handler (audio_vm_stop_handler, NULL);
+ atexit (audio_atexit);
+
+ if (!done) {
+ for (i = 0; !done && i < sizeof (drvtab) / sizeof
(drvtab[0]); i++) {
+ if (drvtab[i]->can_be_default)
+ done = voice_init (drvtab[i]);
+ }
+ }
+
+ audio_state.ticks_threshold = ticks_per_sec / 50;
+ audio_state.freq_threshold = 100;
+
+ register_savevm ("audio", 0, 1, audio_save, audio_load, NULL);
+ if (!done) {
+ dolog ("Can not initialize audio subsystem\n");
+ voice_init (&no_output_driver);
+ }
+}
diff -r 1283d309a603 tools/ioemu/audio/audio.h
--- /dev/null Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/audio/audio.h Tue Dec 20 16:58:20 2005 +0800
@@ -0,0 +1,65 @@
+/*
+ * QEMU Audio subsystem header
+ *
+ * Copyright (c) 2003-2004 Vassili Karpov (malc)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the
"Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef QEMU_AUDIO_H
+#define QEMU_AUDIO_H
+
+#include "mixeng.h"
+
+typedef enum {
+ AUD_FMT_U8,
+ AUD_FMT_S8,
+ AUD_FMT_U16,
+ AUD_FMT_S16
+} audfmt_e;
+
+typedef struct SWVoice SWVoice;
+
+SWVoice * AUD_open (SWVoice *sw, const char *name, int freq,
+ int nchannels, audfmt_e fmt);
+void AUD_init (void);
+void AUD_log (const char *cap, const char *fmt, ...)
+ __attribute__ ((__format__ (__printf__, 2, 3)));;
+void AUD_close (SWVoice *sw);
+int AUD_write (SWVoice *sw, void *pcm_buf, int size);
+void AUD_adjust (SWVoice *sw, int leftover);
+void AUD_reset (SWVoice *sw);
+int AUD_get_free (SWVoice *sw);
+int AUD_get_buffer_size (SWVoice *sw);
+void AUD_run (void);
+void AUD_enable (SWVoice *sw, int on);
+int AUD_calc_elapsed (SWVoice *sw);
+
+static inline void *advance (void *p, int incr)
+{
+ uint8_t *d = p;
+ return (d + incr);
+}
+
+uint32_t popcount (uint32_t u);
+inline uint32_t lsbindex (uint32_t u);
+
+#define audio_MIN(a, b) ((a)>(b)?(b):(a))
+#define audio_MAX(a, b) ((a)<(b)?(b):(a))
+
+#endif /* audio.h */
diff -r 1283d309a603 tools/ioemu/audio/audio_int.h
--- /dev/null Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/audio/audio_int.h Tue Dec 20 16:58:20 2005 +0800
@@ -0,0 +1,164 @@
+/*
+ * QEMU Audio subsystem header
+ *
+ * Copyright (c) 2003-2004 Vassili Karpov (malc)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the
"Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef QEMU_AUDIO_INT_H
+#define QEMU_AUDIO_INT_H
+
+#include "vl.h"
+
+struct pcm_ops;
+
+typedef struct HWVoice {
+ int active;
+ int enabled;
+ int pending_disable;
+ int valid;
+ int freq;
+
+ f_sample *clip;
+ audfmt_e fmt;
+ int nchannels;
+
+ int align;
+ int shift;
+
+ int rpos;
+ int bufsize;
+
+ int bytes_per_second;
+ st_sample_t *mix_buf;
+
+ int samples;
+ int64_t old_ticks;
+ int nb_voices;
+ struct SWVoice **pvoice;
+ struct pcm_ops *pcm_ops;
+} HWVoice;
+
+extern struct pcm_ops no_pcm_ops;
+extern struct audio_output_driver no_output_driver;
+
+extern struct pcm_ops oss_pcm_ops;
+extern struct audio_output_driver oss_output_driver;
+
+extern struct pcm_ops sdl_pcm_ops;
+extern struct audio_output_driver sdl_output_driver;
+
+extern struct pcm_ops wav_pcm_ops;
+extern struct audio_output_driver wav_output_driver;
+
+extern struct pcm_ops fmod_pcm_ops;
+extern struct audio_output_driver fmod_output_driver;
+
+struct audio_output_driver {
+ const char *name;
+ void *(*init) (void);
+ void (*fini) (void *);
+ struct pcm_ops *pcm_ops;
+ int can_be_default;
+ int max_voices;
+ int voice_size;
+};
+
+typedef struct AudioState {
+ int fixed_format;
+ int fixed_freq;
+ int fixed_channels;
+ int fixed_fmt;
+ int nb_hw_voices;
+ int voice_size;
+ int64_t ticks_threshold;
+ int freq_threshold;
+ void *opaque;
+ struct audio_output_driver *drv;
+} AudioState;
+extern AudioState audio_state;
+
+struct SWVoice {
+ int freq;
+ audfmt_e fmt;
+ int nchannels;
+
+ int shift;
+ int align;
+
+ t_sample *conv;
+
+ int left;
+ int pos;
+ int bytes_per_second;
+ int64_t ratio;
+ st_sample_t *buf;
+ void *rate;
+
+ int wpos;
+ int live;
+ int active;
+ int64_t old_ticks;
+ HWVoice *hw;
+ char *name;
+};
+
+struct pcm_ops {
+ int (*init) (HWVoice *hw, int freq, int nchannels, audfmt_e fmt);
+ void (*fini) (HWVoice *hw);
+ void (*run) (HWVoice *hw);
+ int (*write) (SWVoice *sw, void *buf, int size);
+ int (*ctl) (HWVoice *hw, int cmd, ...);
+};
+
+void pcm_sw_free_resources (SWVoice *sw);
+int pcm_sw_alloc_resources (SWVoice *sw);
+void pcm_sw_fini (SWVoice *sw);
+int pcm_sw_init (SWVoice *sw, HWVoice *hw, int freq,
+ int nchannels, audfmt_e fmt);
+
+void pcm_hw_clear (HWVoice *hw, void *buf, int len);
+HWVoice * pcm_hw_find_any (HWVoice *hw);
+HWVoice * pcm_hw_find_any_active (HWVoice *hw);
+HWVoice * pcm_hw_find_any_passive (HWVoice *hw);
+HWVoice * pcm_hw_find_specific (HWVoice *hw, int freq,
+ int nchannels, audfmt_e fmt);
+HWVoice * pcm_hw_add (int freq, int nchannels, audfmt_e fmt);
+int pcm_hw_add_sw (HWVoice *hw, SWVoice *sw);
+int pcm_hw_del_sw (HWVoice *hw, SWVoice *sw);
+SWVoice * pcm_create_voice_pair (int freq, int nchannels, audfmt_e fmt);
+
+void pcm_hw_free_resources (HWVoice *hw);
+int pcm_hw_alloc_resources (HWVoice *hw);
+void pcm_hw_fini (HWVoice *hw);
+void pcm_hw_gc (HWVoice *hw);
+int pcm_hw_get_live (HWVoice *hw);
+int pcm_hw_get_live2 (HWVoice *hw, int *nb_active);
+void pcm_hw_dec_live (HWVoice *hw, int decr);
+int pcm_hw_write (SWVoice *sw, void *buf, int len);
+
+int audio_get_conf_int (const char *key, int defval);
+const char *audio_get_conf_str (const char *key, const char *defval);
+
+struct audio_output_driver;
+
+#define VOICE_ENABLE 1
+#define VOICE_DISABLE 2
+
+#endif /* audio_int.h */
diff -r 1283d309a603 tools/ioemu/audio/mixeng.c
--- /dev/null Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/audio/mixeng.c Tue Dec 20 16:58:20 2005 +0800
@@ -0,0 +1,255 @@
+/*
+ * QEMU Mixing engine
+ *
+ * Copyright (c) 2004 Vassili Karpov (malc)
+ * Copyright (c) 1998 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the
"Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "vl.h"
+//#define DEBUG_FP
+#include "audio/mixeng.h"
+
+#define IN_T int8_t
+#define IN_MIN CHAR_MIN
+#define IN_MAX CHAR_MAX
+#define SIGNED
+#include "mixeng_template.h"
+#undef SIGNED
+#undef IN_MAX
+#undef IN_MIN
+#undef IN_T
+
+#define IN_T uint8_t
+#define IN_MIN 0
+#define IN_MAX UCHAR_MAX
+#include "mixeng_template.h"
+#undef IN_MAX
+#undef IN_MIN
+#undef IN_T
+
+#define IN_T int16_t
+#define IN_MIN SHRT_MIN
+#define IN_MAX SHRT_MAX
+#define SIGNED
+#include "mixeng_template.h"
+#undef SIGNED
+#undef IN_MAX
+#undef IN_MIN
+#undef IN_T
+
+#define IN_T uint16_t
+#define IN_MIN 0
+#define IN_MAX USHRT_MAX
+#include "mixeng_template.h"
+#undef IN_MAX
+#undef IN_MIN
+#undef IN_T
+
+t_sample *mixeng_conv[2][2][2] = {
+ {
+ {
+ conv_uint8_t_to_mono,
+ conv_uint16_t_to_mono
+ },
+ {
+ conv_int8_t_to_mono,
+ conv_int16_t_to_mono
+ }
+ },
+ {
+ {
+ conv_uint8_t_to_stereo,
+ conv_uint16_t_to_stereo
+ },
+ {
+ conv_int8_t_to_stereo,
+ conv_int16_t_to_stereo
+ }
+ }
+};
+
+f_sample *mixeng_clip[2][2][2] = {
+ {
+ {
+ clip_uint8_t_from_mono,
+ clip_uint16_t_from_mono
+ },
+ {
+ clip_int8_t_from_mono,
+ clip_int16_t_from_mono
+ }
+ },
+ {
+ {
+ clip_uint8_t_from_stereo,
+ clip_uint16_t_from_stereo
+ },
+ {
+ clip_int8_t_from_stereo,
+ clip_int16_t_from_stereo
+ }
+ }
+};
+
+/*
+ * August 21, 1998
+ * Copyright 1998 Fabrice Bellard.
+ *
+ * [Rewrote completly the code of Lance Norskog And Sundry
+ * Contributors with a more efficient algorithm.]
+ *
+ * This source code is freely redistributable and may be used for
+ * any purpose. This copyright notice must be maintained.
+ * Lance Norskog And Sundry Contributors are not responsible for
+ * the consequences of using this software.
+ */
+
+/*
+ * Sound Tools rate change effect file.
+ */
+/*
+ * Linear Interpolation.
+ *
+ * The use of fractional increment allows us to use no buffer. It
+ * avoid the problems at the end of the buffer we had with the old
+ * method which stored a possibly big buffer of size
+ * lcm(in_rate,out_rate).
+ *
+ * Limited to 16 bit samples and sampling frequency <= 65535 Hz. If
+ * the input & output frequencies are equal, a delay of one sample is
+ * introduced. Limited to processing 32-bit count worth of samples.
+ *
+ * 1 << FRAC_BITS evaluating to zero in several places. Changed with
+ * an (unsigned long) cast to make it safe. MarkMLl 2/1/99
+ */
+
+/* Private data */
+typedef struct ratestuff {
+ uint64_t opos;
+ uint64_t opos_inc;
+ uint32_t ipos; /* position in the input stream (integer) */
+ st_sample_t ilast; /* last sample in the input stream */
+} *rate_t;
+
+/*
+ * Prepare processing.
+ */
+void *st_rate_start (int inrate, int outrate)
+{
+ rate_t rate = (rate_t) qemu_mallocz (sizeof (struct ratestuff));
+
+ if (!rate) {
+ exit (EXIT_FAILURE);
+ }
+
+ if (inrate == outrate) {
+ // exit (EXIT_FAILURE);
+ }
+
+ if (inrate >= 65535 || outrate >= 65535) {
+ // exit (EXIT_FAILURE);
+ }
+
+ rate->opos = 0;
+
+ /* increment */
+ rate->opos_inc = (inrate * ((int64_t) UINT_MAX)) / outrate;
+
+ rate->ipos = 0;
+ rate->ilast.l = 0;
+ rate->ilast.r = 0;
+ return rate;
+}
+
+/*
+ * Processed signed long samples from ibuf to obuf.
+ * Return number of samples processed.
+ */
+void st_rate_flow (void *opaque, st_sample_t *ibuf, st_sample_t *obuf,
+ int *isamp, int *osamp)
+{
+ rate_t rate = (rate_t) opaque;
+ st_sample_t *istart, *iend;
+ st_sample_t *ostart, *oend;
+ st_sample_t ilast, icur, out;
+ int64_t t;
+
+ ilast = rate->ilast;
+
+ istart = ibuf;
+ iend = ibuf + *isamp;
+
+ ostart = obuf;
+ oend = obuf + *osamp;
+
+ if (rate->opos_inc == 1ULL << 32) {
+ int i, n = *isamp > *osamp ? *osamp : *isamp;
+ for (i = 0; i < n; i++) {
+ obuf[i].l += ibuf[i].r;
+ obuf[i].r += ibuf[i].r;
+ }
+ *isamp = n;
+ *osamp = n;
+ return;
+ }
+
+ while (obuf < oend) {
+
+ /* Safety catch to make sure we have input samples. */
+ if (ibuf >= iend)
+ break;
+
+ /* read as many input samples so that ipos > opos */
+
+ while (rate->ipos <= (rate->opos >> 32)) {
+ ilast = *ibuf++;
+ rate->ipos++;
+ /* See if we finished the input buffer yet */
+ if (ibuf >= iend) goto the_end;
+ }
+
+ icur = *ibuf;
+
+ /* interpolate */
+ t = rate->opos & 0xffffffff;
+ out.l = (ilast.l * (INT_MAX - t) + icur.l * t) / INT_MAX;
+ out.r = (ilast.r * (INT_MAX - t) + icur.r * t) / INT_MAX;
+
+ /* output sample & increment position */
+#if 0
+ *obuf++ = out;
+#else
+ obuf->l += out.l;
+ obuf->r += out.r;
+ obuf += 1;
+#endif
+ rate->opos += rate->opos_inc;
+ }
+
+the_end:
+ *isamp = ibuf - istart;
+ *osamp = obuf - ostart;
+ rate->ilast = ilast;
+}
+
+void st_rate_stop (void *opaque)
+{
+ qemu_free (opaque);
+}
diff -r 1283d309a603 tools/ioemu/audio/mixeng.h
--- /dev/null Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/audio/mixeng.h Tue Dec 20 16:58:20 2005 +0800
@@ -0,0 +1,39 @@
+/*
+ * QEMU Mixing engine header
+ *
+ * Copyright (c) 2004 Vassili Karpov (malc)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the
"Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#ifndef QEMU_MIXENG_H
+#define QEMU_MIXENG_H
+
+typedef void (t_sample) (void *dst, const void *src, int samples);
+typedef void (f_sample) (void *dst, const void *src, int samples);
+typedef struct { int64_t l; int64_t r; } st_sample_t;
+
+extern t_sample *mixeng_conv[2][2][2];
+extern f_sample *mixeng_clip[2][2][2];
+
+void *st_rate_start (int inrate, int outrate);
+void st_rate_flow (void *opaque, st_sample_t *ibuf, st_sample_t *obuf,
+ int *isamp, int *osamp);
+void st_rate_stop (void *opaque);
+
+#endif /* mixeng.h */
diff -r 1283d309a603 tools/ioemu/audio/mixeng_template.h
--- /dev/null Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/audio/mixeng_template.h Tue Dec 20 16:58:20 2005 +0800
@@ -0,0 +1,111 @@
+/*
+ * QEMU Mixing engine
+ *
+ * Copyright (c) 2004 Vassili Karpov (malc)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the
"Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/*
+ * Tusen tack till Mike Nordell
+ * dec++''ified by Dscho
+ */
+
+#ifdef SIGNED
+#define HALFT IN_MAX
+#define HALF IN_MAX
+#else
+#define HALFT ((IN_MAX)>>1)
+#define HALF HALFT
+#endif
+
+static int64_t inline glue(conv_,IN_T) (IN_T v)
+{
+#ifdef SIGNED
+ return (INT_MAX*(int64_t)v)/HALF;
+#else
+ return (INT_MAX*((int64_t)v-HALFT))/HALF;
+#endif
+}
+
+static IN_T inline glue(clip_,IN_T) (int64_t v)
+{
+ if (v >= INT_MAX)
+ return IN_MAX;
+ else if (v < -INT_MAX)
+ return IN_MIN;
+
+#ifdef SIGNED
+ return (IN_T) (v*HALF/INT_MAX);
+#else
+ return (IN_T) (v+INT_MAX/2)*HALF/INT_MAX;
+#endif
+}
+
+static void glue(glue(conv_,IN_T),_to_stereo) (void *dst, const void *src,
+ int samples)
+{
+ st_sample_t *out = (st_sample_t *) dst;
+ IN_T *in = (IN_T *) src;
+ while (samples--) {
+ out->l = glue(conv_,IN_T) (*in++);
+ out->r = glue(conv_,IN_T) (*in++);
+ out += 1;
+ }
+}
+
+static void glue(glue(conv_,IN_T),_to_mono) (void *dst, const void *src,
+ int samples)
+{
+ st_sample_t *out = (st_sample_t *) dst;
+ IN_T *in = (IN_T *) src;
+ while (samples--) {
+ out->l = glue(conv_,IN_T) (in[0]);
+ out->r = out->l;
+ out += 1;
+ in += 1;
+ }
+}
+
+static void glue(glue(clip_,IN_T),_from_stereo) (void *dst, const void *src,
+ int samples)
+{
+ st_sample_t *in = (st_sample_t *) src;
+ IN_T *out = (IN_T *) dst;
+ while (samples--) {
+ *out++ = glue(clip_,IN_T) (in->l);
+ *out++ = glue(clip_,IN_T) (in->r);
+ in += 1;
+ }
+}
+
+static void glue(glue(clip_,IN_T),_from_mono) (void *dst, const void *src,
+ int samples)
+{
+ st_sample_t *in = (st_sample_t *) src;
+ IN_T *out = (IN_T *) dst;
+ while (samples--) {
+ *out++ = glue(clip_,IN_T) (in->l + in->r);
+ in += 1;
+ }
+}
+
+#undef HALF
+#undef HALFT
+
diff -r 1283d309a603 tools/ioemu/audio/noaudio.c
--- /dev/null Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/audio/noaudio.c Tue Dec 20 16:58:20 2005 +0800
@@ -0,0 +1,130 @@
+/*
+ * QEMU NULL audio output driver
+ *
+ * Copyright (c) 2004 Vassili Karpov (malc)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the
"Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "vl.h"
+
+#include "audio/audio_int.h"
+
+typedef struct NoVoice {
+ HWVoice hw;
+ int64_t old_ticks;
+} NoVoice;
+
+#define dolog(...) AUD_log ("noaudio", __VA_ARGS__)
+#ifdef DEBUG
+#define ldebug(...) dolog (__VA_ARGS__)
+#else
+#define ldebug(...)
+#endif
+
+static void no_hw_run (HWVoice *hw)
+{
+ NoVoice *no = (NoVoice *) hw;
+ int rpos, live, decr, samples;
+ uint8_t *dst;
+ st_sample_t *src;
+ int64_t now = qemu_get_clock (vm_clock);
+ int64_t ticks = now - no->old_ticks;
+ int64_t bytes = (ticks * hw->bytes_per_second) / ticks_per_sec;
+
+ if (bytes > INT_MAX)
+ samples = INT_MAX >> hw->shift;
+ else
+ samples = bytes >> hw->shift;
+
+ live = pcm_hw_get_live (hw);
+ if (live <= 0)
+ return;
+
+ no->old_ticks = now;
+ decr = audio_MIN (live, samples);
+ samples = decr;
+ rpos = hw->rpos;
+ while (samples) {
+ int left_till_end_samples = hw->samples - rpos;
+ int convert_samples = audio_MIN (samples, left_till_end_samples);
+
+ src = advance (hw->mix_buf, rpos * sizeof (st_sample_t));
+ memset (src, 0, convert_samples * sizeof (st_sample_t));
+
+ rpos = (rpos + convert_samples) % hw->samples;
+ samples -= convert_samples;
+ }
+
+ pcm_hw_dec_live (hw, decr);
+ hw->rpos = rpos;
+}
+
+static int no_hw_write (SWVoice *sw, void *buf, int len)
+{
+ return pcm_hw_write (sw, buf, len);
+}
+
+static int no_hw_init (HWVoice *hw, int freq, int nchannels, audfmt_e fmt)
+{
+ NoVoice *no = (NoVoice *) hw;
+ hw->freq = freq;
+ hw->nchannels = nchannels;
+ hw->fmt = fmt;
+ hw->bufsize = 4096;
+ return 0;
+}
+
+static void no_hw_fini (HWVoice *hw)
+{
+ (void) hw;
+}
+
+static int no_hw_ctl (HWVoice *hw, int cmd, ...)
+{
+ (void) hw;
+ (void) cmd;
+ return 0;
+}
+
+static void *no_audio_init (void)
+{
+ return &no_audio_init;
+}
+
+static void no_audio_fini (void *opaque)
+{
+}
+
+struct pcm_ops no_pcm_ops = {
+ no_hw_init,
+ no_hw_fini,
+ no_hw_run,
+ no_hw_write,
+ no_hw_ctl
+};
+
+struct audio_output_driver no_output_driver = {
+ "none",
+ no_audio_init,
+ no_audio_fini,
+ &no_pcm_ops,
+ 1,
+ 1,
+ sizeof (NoVoice)
+};
diff -r 1283d309a603 tools/ioemu/audio/ossaudio.c
--- /dev/null Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/audio/ossaudio.c Tue Dec 20 16:58:20 2005 +0800
@@ -0,0 +1,475 @@
+/*
+ * QEMU OSS audio output driver
+ *
+ * Copyright (c) 2003-2004 Vassili Karpov (malc)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the
"Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/soundcard.h>
+#include <assert.h>
+#include "vl.h"
+
+#include "audio/audio_int.h"
+
+typedef struct OSSVoice {
+ HWVoice hw;
+ void *pcm_buf;
+ int fd;
+ int nfrags;
+ int fragsize;
+ int mmapped;
+ int old_optr;
+} OSSVoice;
+
+#define dolog(...) AUD_log ("oss", __VA_ARGS__)
+#ifdef DEBUG
+#define ldebug(...) dolog (__VA_ARGS__)
+#else
+#define ldebug(...)
+#endif
+
+#define QC_OSS_FRAGSIZE "QEMU_OSS_FRAGSIZE"
+#define QC_OSS_NFRAGS "QEMU_OSS_NFRAGS"
+#define QC_OSS_MMAP "QEMU_OSS_MMAP"
+#define QC_OSS_DEV "QEMU_OSS_DEV"
+
+#define errstr() strerror (errno)
+
+static struct {
+ int try_mmap;
+ int nfrags;
+ int fragsize;
+ const char *dspname;
+} conf = {
+ .try_mmap = 0,
+ .nfrags = 4,
+ .fragsize = 4096,
+ .dspname = "/dev/dsp"
+};
+
+struct oss_params {
+ int freq;
+ audfmt_e fmt;
+ int nchannels;
+ int nfrags;
+ int fragsize;
+};
+
+static int oss_hw_write (SWVoice *sw, void *buf, int len)
+{
+ return pcm_hw_write (sw, buf, len);
+}
+
+static int AUD_to_ossfmt (audfmt_e fmt)
+{
+ switch (fmt) {
+ case AUD_FMT_S8: return AFMT_S8;
+ case AUD_FMT_U8: return AFMT_U8;
+ case AUD_FMT_S16: return AFMT_S16_LE;
+ case AUD_FMT_U16: return AFMT_U16_LE;
+ default:
+ dolog ("Internal logic error: Bad audio format
%d\nAborting\n", fmt);
+ exit (EXIT_FAILURE);
+ }
+}
+
+static int oss_to_audfmt (int fmt)
+{
+ switch (fmt) {
+ case AFMT_S8: return AUD_FMT_S8;
+ case AFMT_U8: return AUD_FMT_U8;
+ case AFMT_S16_LE: return AUD_FMT_S16;
+ case AFMT_U16_LE: return AUD_FMT_U16;
+ default:
+ dolog ("Internal logic error: Unrecognized OSS audio format
%d\n"
+ "Aborting\n",
+ fmt);
+ exit (EXIT_FAILURE);
+ }
+}
+
+#ifdef DEBUG_PCM
+static void oss_dump_pcm_info (struct oss_params *req, struct oss_params *obt)
+{
+ dolog ("parameter | requested value | obtained value\n");
+ dolog ("format | %10d | %10d\n", req->fmt,
obt->fmt);
+ dolog ("channels | %10d | %10d\n", req->nchannels,
obt->nchannels);
+ dolog ("frequency | %10d | %10d\n", req->freq,
obt->freq);
+ dolog ("nfrags | %10d | %10d\n", req->nfrags,
obt->nfrags);
+ dolog ("fragsize | %10d | %10d\n", req->fragsize,
obt->fragsize);
+}
+#endif
+
+static int oss_open (struct oss_params *req, struct oss_params *obt, int *pfd)
+{
+ int fd;
+ int mmmmssss;
+ audio_buf_info abinfo;
+ int fmt, freq, nchannels;
+ const char *dspname = conf.dspname;
+
+ fd = open (dspname, O_RDWR | O_NONBLOCK);
+ if (-1 == fd) {
+ dolog ("Could not initialize audio hardware. Failed to open
`%s'':\n"
+ "Reason:%s\n",
+ dspname,
+ errstr ());
+ return -1;
+ }
+
+ freq = req->freq;
+ nchannels = req->nchannels;
+ fmt = req->fmt;
+
+ if (ioctl (fd, SNDCTL_DSP_SAMPLESIZE, &fmt)) {
+ dolog ("Could not initialize audio hardware\n"
+ "Failed to set sample size\n"
+ "Reason: %s\n",
+ errstr ());
+ goto err;
+ }
+
+ if (ioctl (fd, SNDCTL_DSP_CHANNELS, &nchannels)) {
+ dolog ("Could not initialize audio hardware\n"
+ "Failed to set number of channels\n"
+ "Reason: %s\n",
+ errstr ());
+ goto err;
+ }
+
+ if (ioctl (fd, SNDCTL_DSP_SPEED, &freq)) {
+ dolog ("Could not initialize audio hardware\n"
+ "Failed to set frequency\n"
+ "Reason: %s\n",
+ errstr ());
+ goto err;
+ }
+
+ if (ioctl (fd, SNDCTL_DSP_NONBLOCK)) {
+ dolog ("Could not initialize audio hardware\n"
+ "Failed to set non-blocking mode\n"
+ "Reason: %s\n",
+ errstr ());
+ goto err;
+ }
+
+ mmmmssss = (req->nfrags << 16) | lsbindex (req->fragsize);
+ if (ioctl (fd, SNDCTL_DSP_SETFRAGMENT, &mmmmssss)) {
+ dolog ("Could not initialize audio hardware\n"
+ "Failed to set buffer length (%d, %d)\n"
+ "Reason:%s\n",
+ conf.nfrags, conf.fragsize,
+ errstr ());
+ goto err;
+ }
+
+ if (ioctl (fd, SNDCTL_DSP_GETOSPACE, &abinfo)) {
+ dolog ("Could not initialize audio hardware\n"
+ "Failed to get buffer length\n"
+ "Reason:%s\n",
+ errstr ());
+ goto err;
+ }
+
+ obt->fmt = fmt;
+ obt->nchannels = nchannels;
+ obt->freq = freq;
+ obt->nfrags = abinfo.fragstotal;
+ obt->fragsize = abinfo.fragsize;
+ *pfd = fd;
+
+ if ((req->fmt != obt->fmt) ||
+ (req->nchannels != obt->nchannels) ||
+ (req->freq != obt->freq) ||
+ (req->fragsize != obt->fragsize) ||
+ (req->nfrags != obt->nfrags)) {
+#ifdef DEBUG_PCM
+ dolog ("Audio parameters mismatch\n");
+ oss_dump_pcm_info (req, obt);
+#endif
+ }
+
+#ifdef DEBUG_PCM
+ oss_dump_pcm_info (req, obt);
+#endif
+ return 0;
+
+err:
+ close (fd);
+ return -1;
+}
+
+static void oss_hw_run (HWVoice *hw)
+{
+ OSSVoice *oss = (OSSVoice *) hw;
+ int err, rpos, live, decr;
+ int samples;
+ uint8_t *dst;
+ st_sample_t *src;
+ struct audio_buf_info abinfo;
+ struct count_info cntinfo;
+
+ live = pcm_hw_get_live (hw);
+ if (live <= 0)
+ return;
+
+ if (oss->mmapped) {
+ int bytes;
+
+ err = ioctl (oss->fd, SNDCTL_DSP_GETOPTR, &cntinfo);
+ if (err < 0) {
+ dolog ("SNDCTL_DSP_GETOPTR failed\nReason: %s\n", errstr
());
+ return;
+ }
+
+ if (cntinfo.ptr == oss->old_optr) {
+ if (abs (hw->samples - live) < 64)
+ dolog ("overrun\n");
+ return;
+ }
+
+ if (cntinfo.ptr > oss->old_optr) {
+ bytes = cntinfo.ptr - oss->old_optr;
+ }
+ else {
+ bytes = hw->bufsize + cntinfo.ptr - oss->old_optr;
+ }
+
+ decr = audio_MIN (bytes >> hw->shift, live);
+ }
+ else {
+ err = ioctl (oss->fd, SNDCTL_DSP_GETOSPACE, &abinfo);
+ if (err < 0) {
+ dolog ("SNDCTL_DSP_GETOSPACE failed\nReason: %s\n",
errstr ());
+ return;
+ }
+
+ decr = audio_MIN (abinfo.bytes >> hw->shift, live);
+ if (decr <= 0)
+ return;
+ }
+
+ samples = decr;
+ rpos = hw->rpos;
+ while (samples) {
+ int left_till_end_samples = hw->samples - rpos;
+ int convert_samples = audio_MIN (samples, left_till_end_samples);
+
+ src = advance (hw->mix_buf, rpos * sizeof (st_sample_t));
+ dst = advance (oss->pcm_buf, rpos << hw->shift);
+
+ hw->clip (dst, src, convert_samples);
+ if (!oss->mmapped) {
+ int written;
+
+ written = write (oss->fd, dst, convert_samples <<
hw->shift);
+ /* XXX: follow errno recommendations ? */
+ if (written == -1) {
+ dolog ("Failed to write audio\nReason: %s\n", errstr
());
+ continue;
+ }
+
+ if (written != convert_samples << hw->shift) {
+ int wsamples = written >> hw->shift;
+ int wbytes = wsamples << hw->shift;
+ if (wbytes != written) {
+ dolog ("Unaligned write %d, %d\n", wbytes,
written);
+ }
+ memset (src, 0, wbytes);
+ decr -= samples;
+ rpos = (rpos + wsamples) % hw->samples;
+ break;
+ }
+ }
+ memset (src, 0, convert_samples * sizeof (st_sample_t));
+
+ rpos = (rpos + convert_samples) % hw->samples;
+ samples -= convert_samples;
+ }
+ if (oss->mmapped) {
+ oss->old_optr = cntinfo.ptr;
+ }
+
+ pcm_hw_dec_live (hw, decr);
+ hw->rpos = rpos;
+}
+
+static void oss_hw_fini (HWVoice *hw)
+{
+ int err;
+ OSSVoice *oss = (OSSVoice *) hw;
+
+ ldebug ("oss_hw_fini\n");
+ err = close (oss->fd);
+ if (err) {
+ dolog ("Failed to close OSS descriptor\nReason: %s\n", errstr
());
+ }
+ oss->fd = -1;
+
+ if (oss->pcm_buf) {
+ if (oss->mmapped) {
+ err = munmap (oss->pcm_buf, hw->bufsize);
+ if (err) {
+ dolog ("Failed to unmap OSS buffer\nReason: %s\n",
+ errstr ());
+ }
+ }
+ else {
+ qemu_free (oss->pcm_buf);
+ }
+ oss->pcm_buf = NULL;
+ }
+}
+
+static int oss_hw_init (HWVoice *hw, int freq, int nchannels, audfmt_e fmt)
+{
+ OSSVoice *oss = (OSSVoice *) hw;
+ struct oss_params req, obt;
+
+ assert (!oss->fd);
+ req.fmt = AUD_to_ossfmt (fmt);
+ req.freq = freq;
+ req.nchannels = nchannels;
+ req.fragsize = conf.fragsize;
+ req.nfrags = conf.nfrags;
+
+ if (oss_open (&req, &obt, &oss->fd))
+ return -1;
+
+ hw->freq = obt.freq;
+ hw->fmt = oss_to_audfmt (obt.fmt);
+ hw->nchannels = obt.nchannels;
+
+ oss->nfrags = obt.nfrags;
+ oss->fragsize = obt.fragsize;
+ hw->bufsize = obt.nfrags * obt.fragsize;
+
+ oss->mmapped = 0;
+ if (conf.try_mmap) {
+ oss->pcm_buf = mmap (0, hw->bufsize, PROT_READ | PROT_WRITE,
+ MAP_SHARED, oss->fd, 0);
+ if (oss->pcm_buf == MAP_FAILED) {
+ dolog ("Failed to mmap OSS device\nReason: %s\n",
+ errstr ());
+ } else {
+ int err;
+ int trig = 0;
+ if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
+ dolog ("SNDCTL_DSP_SETTRIGGER 0 failed\nReason:
%s\n",
+ errstr ());
+ }
+ else {
+ trig = PCM_ENABLE_OUTPUT;
+ if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) <
0) {
+ dolog ("SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT
failed\n"
+ "Reason: %s\n", errstr ());
+ }
+ else {
+ oss->mmapped = 1;
+ }
+ }
+
+ if (!oss->mmapped) {
+ err = munmap (oss->pcm_buf, hw->bufsize);
+ if (err) {
+ dolog ("Failed to unmap OSS device\nReason:
%s\n",
+ errstr ());
+ }
+ }
+ }
+ }
+
+ if (!oss->mmapped) {
+ oss->pcm_buf = qemu_mallocz (hw->bufsize);
+ if (!oss->pcm_buf) {
+ close (oss->fd);
+ oss->fd = -1;
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int oss_hw_ctl (HWVoice *hw, int cmd, ...)
+{
+ int trig;
+ OSSVoice *oss = (OSSVoice *) hw;
+
+ if (!oss->mmapped)
+ return 0;
+
+ switch (cmd) {
+ case VOICE_ENABLE:
+ ldebug ("enabling voice\n");
+ pcm_hw_clear (hw, oss->pcm_buf, hw->samples);
+ trig = PCM_ENABLE_OUTPUT;
+ if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
+ dolog ("SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n"
+ "Reason: %s\n", errstr ());
+ return -1;
+ }
+ break;
+
+ case VOICE_DISABLE:
+ ldebug ("disabling voice\n");
+ trig = 0;
+ if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) {
+ dolog ("SNDCTL_DSP_SETTRIGGER 0 failed\nReason: %s\n",
+ errstr ());
+ return -1;
+ }
+ break;
+ }
+ return 0;
+}
+
+static void *oss_audio_init (void)
+{
+ conf.fragsize = audio_get_conf_int (QC_OSS_FRAGSIZE, conf.fragsize);
+ conf.nfrags = audio_get_conf_int (QC_OSS_NFRAGS, conf.nfrags);
+ conf.try_mmap = audio_get_conf_int (QC_OSS_MMAP, conf.try_mmap);
+ conf.dspname = audio_get_conf_str (QC_OSS_DEV, conf.dspname);
+ return &conf;
+}
+
+static void oss_audio_fini (void *opaque)
+{
+}
+
+struct pcm_ops oss_pcm_ops = {
+ oss_hw_init,
+ oss_hw_fini,
+ oss_hw_run,
+ oss_hw_write,
+ oss_hw_ctl
+};
+
+struct audio_output_driver oss_output_driver = {
+ "oss",
+ oss_audio_init,
+ oss_audio_fini,
+ &oss_pcm_ops,
+ 1,
+ INT_MAX,
+ sizeof (OSSVoice)
+};
diff -r 1283d309a603 tools/ioemu/audio/sdlaudio.c
--- /dev/null Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/audio/sdlaudio.c Tue Dec 20 16:58:20 2005 +0800
@@ -0,0 +1,332 @@
+/*
+ * QEMU SDL audio output driver
+ *
+ * Copyright (c) 2004 Vassili Karpov (malc)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the
"Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <SDL.h>
+#include <SDL_thread.h>
+#include "vl.h"
+
+#include "audio/audio_int.h"
+
+typedef struct SDLVoice {
+ HWVoice hw;
+} SDLVoice;
+
+#define dolog(...) AUD_log ("sdl", __VA_ARGS__)
+#ifdef DEBUG
+#define ldebug(...) dolog (__VA_ARGS__)
+#else
+#define ldebug(...)
+#endif
+
+#define QC_SDL_SAMPLES "QEMU_SDL_SAMPLES"
+
+#define errstr() SDL_GetError ()
+
+static struct {
+ int nb_samples;
+} conf = {
+ 1024
+};
+
+struct SDLAudioState {
+ int exit;
+ SDL_mutex *mutex;
+ SDL_sem *sem;
+ int initialized;
+} glob_sdl;
+typedef struct SDLAudioState SDLAudioState;
+
+static void sdl_hw_run (HWVoice *hw)
+{
+ (void) hw;
+}
+
+static int sdl_lock (SDLAudioState *s)
+{
+ if (SDL_LockMutex (s->mutex)) {
+ dolog ("SDL_LockMutex failed\nReason: %s\n", errstr ());
+ return -1;
+ }
+ return 0;
+}
+
+static int sdl_unlock (SDLAudioState *s)
+{
+ if (SDL_UnlockMutex (s->mutex)) {
+ dolog ("SDL_UnlockMutex failed\nReason: %s\n", errstr ());
+ return -1;
+ }
+ return 0;
+}
+
+static int sdl_post (SDLAudioState *s)
+{
+ if (SDL_SemPost (s->sem)) {
+ dolog ("SDL_SemPost failed\nReason: %s\n", errstr ());
+ return -1;
+ }
+ return 0;
+}
+
+static int sdl_wait (SDLAudioState *s)
+{
+ if (SDL_SemWait (s->sem)) {
+ dolog ("SDL_SemWait failed\nReason: %s\n", errstr ());
+ return -1;
+ }
+ return 0;
+}
+
+static int sdl_unlock_and_post (SDLAudioState *s)
+{
+ if (sdl_unlock (s))
+ return -1;
+
+ return sdl_post (s);
+}
+
+static int sdl_hw_write (SWVoice *sw, void *buf, int len)
+{
+ int ret;
+ SDLAudioState *s = &glob_sdl;
+ sdl_lock (s);
+ ret = pcm_hw_write (sw, buf, len);
+ sdl_unlock_and_post (s);
+ return ret;
+}
+
+static int AUD_to_sdlfmt (audfmt_e fmt, int *shift)
+{
+ *shift = 0;
+ switch (fmt) {
+ case AUD_FMT_S8: return AUDIO_S8;
+ case AUD_FMT_U8: return AUDIO_U8;
+ case AUD_FMT_S16: *shift = 1; return AUDIO_S16LSB;
+ case AUD_FMT_U16: *shift = 1; return AUDIO_U16LSB;
+ default:
+ dolog ("Internal logic error: Bad audio format
%d\nAborting\n", fmt);
+ exit (EXIT_FAILURE);
+ }
+}
+
+static int sdl_to_audfmt (int fmt)
+{
+ switch (fmt) {
+ case AUDIO_S8: return AUD_FMT_S8;
+ case AUDIO_U8: return AUD_FMT_U8;
+ case AUDIO_S16LSB: return AUD_FMT_S16;
+ case AUDIO_U16LSB: return AUD_FMT_U16;
+ default:
+ dolog ("Internal logic error: Unrecognized SDL audio format
%d\n"
+ "Aborting\n", fmt);
+ exit (EXIT_FAILURE);
+ }
+}
+
+static int sdl_open (SDL_AudioSpec *req, SDL_AudioSpec *obt)
+{
+ int status;
+
+ status = SDL_OpenAudio (req, obt);
+ if (status) {
+ dolog ("SDL_OpenAudio failed\nReason: %s\n", errstr ());
+ }
+ return status;
+}
+
+static void sdl_close (SDLAudioState *s)
+{
+ if (s->initialized) {
+ sdl_lock (s);
+ s->exit = 1;
+ sdl_unlock_and_post (s);
+ SDL_PauseAudio (1);
+ SDL_CloseAudio ();
+ s->initialized = 0;
+ }
+}
+
+static void sdl_callback (void *opaque, Uint8 *buf, int len)
+{
+ SDLVoice *sdl = opaque;
+ SDLAudioState *s = &glob_sdl;
+ HWVoice *hw = &sdl->hw;
+ int samples = len >> hw->shift;
+
+ if (s->exit) {
+ return;
+ }
+
+ while (samples) {
+ int to_mix, live, decr;
+
+ /* dolog ("in callback samples=%d\n", samples); */
+ sdl_wait (s);
+ if (s->exit) {
+ return;
+ }
+
+ sdl_lock (s);
+ live = pcm_hw_get_live (hw);
+ if (live <= 0)
+ goto again;
+
+ /* dolog ("in callback live=%d\n", live); */
+ to_mix = audio_MIN (samples, live);
+ decr = to_mix;
+ while (to_mix) {
+ int chunk = audio_MIN (to_mix, hw->samples - hw->rpos);
+ st_sample_t *src = hw->mix_buf + hw->rpos;
+
+ /* dolog ("in callback to_mix %d, chunk %d\n", to_mix,
chunk); */
+ hw->clip (buf, src, chunk);
+ memset (src, 0, chunk * sizeof (st_sample_t));
+ hw->rpos = (hw->rpos + chunk) % hw->samples;
+ to_mix -= chunk;
+ buf += chunk << hw->shift;
+ }
+ samples -= decr;
+ pcm_hw_dec_live (hw, decr);
+
+ again:
+ sdl_unlock (s);
+ }
+ /* dolog ("done len=%d\n", len); */
+}
+
+static void sdl_hw_fini (HWVoice *hw)
+{
+ ldebug ("sdl_hw_fini %d fixed=%d\n",
+ glob_sdl.initialized, audio_conf.fixed_format);
+ sdl_close (&glob_sdl);
+}
+
+static int sdl_hw_init (HWVoice *hw, int freq, int nchannels, audfmt_e fmt)
+{
+ SDLVoice *sdl = (SDLVoice *) hw;
+ SDLAudioState *s = &glob_sdl;
+ SDL_AudioSpec req, obt;
+ int shift;
+
+ ldebug ("sdl_hw_init %d freq=%d fixed=%d\n",
+ s->initialized, freq, audio_conf.fixed_format);
+
+ if (nchannels != 2) {
+ dolog ("Bogus channel count %d\n", nchannels);
+ return -1;
+ }
+
+ req.freq = freq;
+ req.format = AUD_to_sdlfmt (fmt, &shift);
+ req.channels = nchannels;
+ req.samples = conf.nb_samples;
+ shift <<= nchannels == 2;
+
+ req.callback = sdl_callback;
+ req.userdata = sdl;
+
+ if (sdl_open (&req, &obt))
+ return -1;
+
+ hw->freq = obt.freq;
+ hw->fmt = sdl_to_audfmt (obt.format);
+ hw->nchannels = obt.channels;
+ hw->bufsize = obt.samples << shift;
+
+ s->initialized = 1;
+ s->exit = 0;
+ SDL_PauseAudio (0);
+ return 0;
+}
+
+static int sdl_hw_ctl (HWVoice *hw, int cmd, ...)
+{
+ (void) hw;
+
+ switch (cmd) {
+ case VOICE_ENABLE:
+ SDL_PauseAudio (0);
+ break;
+
+ case VOICE_DISABLE:
+ SDL_PauseAudio (1);
+ break;
+ }
+ return 0;
+}
+
+static void *sdl_audio_init (void)
+{
+ SDLAudioState *s = &glob_sdl;
+ conf.nb_samples = audio_get_conf_int (QC_SDL_SAMPLES, conf.nb_samples);
+
+ if (SDL_InitSubSystem (SDL_INIT_AUDIO)) {
+ dolog ("SDL failed to initialize audio subsystem\nReason:
%s\n",
+ errstr ());
+ return NULL;
+ }
+
+ s->mutex = SDL_CreateMutex ();
+ if (!s->mutex) {
+ dolog ("Failed to create SDL mutex\nReason: %s\n", errstr
());
+ SDL_QuitSubSystem (SDL_INIT_AUDIO);
+ return NULL;
+ }
+
+ s->sem = SDL_CreateSemaphore (0);
+ if (!s->sem) {
+ dolog ("Failed to create SDL semaphore\nReason: %s\n", errstr
());
+ SDL_DestroyMutex (s->mutex);
+ SDL_QuitSubSystem (SDL_INIT_AUDIO);
+ return NULL;
+ }
+
+ return s;
+}
+
+static void sdl_audio_fini (void *opaque)
+{
+ SDLAudioState *s = opaque;
+ sdl_close (s);
+ SDL_DestroySemaphore (s->sem);
+ SDL_DestroyMutex (s->mutex);
+ SDL_QuitSubSystem (SDL_INIT_AUDIO);
+}
+
+struct pcm_ops sdl_pcm_ops = {
+ sdl_hw_init,
+ sdl_hw_fini,
+ sdl_hw_run,
+ sdl_hw_write,
+ sdl_hw_ctl
+};
+
+struct audio_output_driver sdl_output_driver = {
+ "sdl",
+ sdl_audio_init,
+ sdl_audio_fini,
+ &sdl_pcm_ops,
+ 1,
+ 1,
+ sizeof (SDLVoice)
+};
diff -r 1283d309a603 tools/ioemu/audio/wavaudio.c
--- /dev/null Sun Dec 18 20:29:43 2005 +0100
+++ b/tools/ioemu/audio/wavaudio.c Tue Dec 20 16:58:20 2005 +0800
@@ -0,0 +1,217 @@
+/*
+ * QEMU WAV audio output driver
+ *
+ * Copyright (c) 2004 Vassili Karpov (malc)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the
"Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "vl.h"
+
+#include "audio/audio_int.h"
+
+typedef struct WAVVoice {
+ HWVoice hw;
+ QEMUFile *f;
+ int64_t old_ticks;
+ void *pcm_buf;
+ int total_samples;
+} WAVVoice;
+
+#define dolog(...) AUD_log ("wav", __VA_ARGS__)
+#ifdef DEBUG
+#define ldebug(...) dolog (__VA_ARGS__)
+#else
+#define ldebug(...)
+#endif
+
+static struct {
+ const char *wav_path;
+} conf = {
+ .wav_path = "qemu.wav"
+};
+
+static void wav_hw_run (HWVoice *hw)
+{
+ WAVVoice *wav = (WAVVoice *) hw;
+ int rpos, live, decr, samples;
+ uint8_t *dst;
+ st_sample_t *src;
+ int64_t now = qemu_get_clock (vm_clock);
+ int64_t ticks = now - wav->old_ticks;
+ int64_t bytes = (ticks * hw->bytes_per_second) / ticks_per_sec;
+
+ if (bytes > INT_MAX)
+ samples = INT_MAX >> hw->shift;
+ else
+ samples = bytes >> hw->shift;
+
+ live = pcm_hw_get_live (hw);
+ if (live <= 0)
+ return;
+
+ wav->old_ticks = now;
+ decr = audio_MIN (live, samples);
+ samples = decr;
+ rpos = hw->rpos;
+ while (samples) {
+ int left_till_end_samples = hw->samples - rpos;
+ int convert_samples = audio_MIN (samples, left_till_end_samples);
+
+ src = advance (hw->mix_buf, rpos * sizeof (st_sample_t));
+ dst = advance (wav->pcm_buf, rpos << hw->shift);
+
+ hw->clip (dst, src, convert_samples);
+ qemu_put_buffer (wav->f, dst, convert_samples <<
hw->shift);
+ memset (src, 0, convert_samples * sizeof (st_sample_t));
+
+ rpos = (rpos + convert_samples) % hw->samples;
+ samples -= convert_samples;
+ wav->total_samples += convert_samples;
+ }
+
+ pcm_hw_dec_live (hw, decr);
+ hw->rpos = rpos;
+}
+
+static int wav_hw_write (SWVoice *sw, void *buf, int len)
+{
+ return pcm_hw_write (sw, buf, len);
+}
+
+/* VICE code: Store number as little endian. */
+static void le_store (uint8_t *buf, uint32_t val, int len)
+{
+ int i;
+ for (i = 0; i < len; i++) {
+ buf[i] = (uint8_t) (val & 0xff);
+ val >>= 8;
+ }
+}
+
+static int wav_hw_init (HWVoice *hw, int freq, int nchannels, audfmt_e fmt)
+{
+ WAVVoice *wav = (WAVVoice *) hw;
+ int bits16 = 0, stereo = audio_state.fixed_channels == 2;
+ uint8_t hdr[] = {
+ 0x52, 0x49, 0x46, 0x46, 0x00, 0x00, 0x00, 0x00, 0x57, 0x41, 0x56,
+ 0x45, 0x66, 0x6d, 0x74, 0x20, 0x10, 0x00, 0x00, 0x00, 0x01, 0x00,
+ 0x02, 0x00, 0x44, 0xac, 0x00, 0x00, 0x10, 0xb1, 0x02, 0x00, 0x04,
+ 0x00, 0x10, 0x00, 0x64, 0x61, 0x74, 0x61, 0x00, 0x00, 0x00, 0x00
+ };
+
+ switch (audio_state.fixed_fmt) {
+ case AUD_FMT_S8:
+ case AUD_FMT_U8:
+ break;
+
+ case AUD_FMT_S16:
+ case AUD_FMT_U16:
+ bits16 = 1;
+ break;
+ }
+
+ hdr[34] = bits16 ? 0x10 : 0x08;
+ hw->freq = 44100;
+ hw->nchannels = stereo ? 2 : 1;
+ hw->fmt = bits16 ? AUD_FMT_S16 : AUD_FMT_U8;
+ hw->bufsize = 4096;
+ wav->pcm_buf = qemu_mallocz (hw->bufsize);
+ if (!wav->pcm_buf)
+ return -1;
+
+ le_store (hdr + 22, hw->nchannels, 2);
+ le_store (hdr + 24, hw->freq, 4);
+ le_store (hdr + 28, hw->freq << (bits16 + stereo), 4);
+ le_store (hdr + 32, 1 << (bits16 + stereo), 2);
+
+ wav->f = fopen (conf.wav_path, "wb");
+ if (!wav->f) {
+ dolog ("failed to open wave file `%s''\nReason:
%s\n",
+ conf.wav_path, strerror (errno));
+ qemu_free (wav->pcm_buf);
+ wav->pcm_buf = NULL;
+ return -1;
+ }
+
+ qemu_put_buffer (wav->f, hdr, sizeof (hdr));
+ return 0;
+}
+
+static void wav_hw_fini (HWVoice *hw)
+{
+ WAVVoice *wav = (WAVVoice *) hw;
+ int stereo = hw->nchannels == 2;
+ uint8_t rlen[4];
+ uint8_t dlen[4];
+ uint32_t rifflen = (wav->total_samples << stereo) + 36;
+ uint32_t datalen = wav->total_samples << stereo;
+
+ if (!wav->f || !hw->active)
+ return;
+
+ le_store (rlen, rifflen, 4);
+ le_store (dlen, datalen, 4);
+
+ qemu_fseek (wav->f, 4, SEEK_SET);
+ qemu_put_buffer (wav->f, rlen, 4);
+
+ qemu_fseek (wav->f, 32, SEEK_CUR);
+ qemu_put_buffer (wav->f, dlen, 4);
+
+ fclose (wav->f);
+ wav->f = NULL;
+
+ qemu_free (wav->pcm_buf);
+ wav->pcm_buf = NULL;
+}
+
+static int wav_hw_ctl (HWVoice *hw, int cmd, ...)
+{
+ (void) hw;
+ (void) cmd;
+ return 0;
+}
+
+static void *wav_audio_init (void)
+{
+ return &conf;
+}
+
+static void wav_audio_fini (void *opaque)
+{
+ ldebug ("wav_fini");
+}
+
+struct pcm_ops wav_pcm_ops = {
+ wav_hw_init,
+ wav_hw_fini,
+ wav_hw_run,
+ wav_hw_write,
+ wav_hw_ctl
+};
+
+struct audio_output_driver wav_output_driver = {
+ "wav",
+ wav_audio_init,
+ wav_audio_fini,
+ &wav_pcm_ops,
+ 1,
+ 1,
+ sizeof (WAVVoice)
+};
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