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qemu/audio/fmodaudio.c
malc 3c854e4770 Remove bit-rotten threshold handling 
Thanks to Toshiya Takeda for bringing up an unrelated issue which led
to this.

Signed-off-by: malc <av1474@comtv.ru>
2009-09-10 21:09:09 +04:00

695 lines
17 KiB
C
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/*
* QEMU FMOD audio driver
*
* Copyright (c) 2004-2005 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 <fmod.h>
#include <fmod_errors.h>
#include "qemu-common.h"
#include "audio.h"
#define AUDIO_CAP "fmod"
#include "audio_int.h"
typedef struct FMODVoiceOut {
HWVoiceOut hw;
unsigned int old_pos;
FSOUND_SAMPLE *fmod_sample;
int channel;
} FMODVoiceOut;
typedef struct FMODVoiceIn {
HWVoiceIn hw;
FSOUND_SAMPLE *fmod_sample;
} FMODVoiceIn;
static struct {
const char *drvname;
int nb_samples;
int freq;
int nb_channels;
int bufsize;
int broken_adc;
} conf = {
.nb_samples = 2048 * 2,
.freq = 44100,
.nb_channels = 2,
};
static void GCC_FMT_ATTR (1, 2) fmod_logerr (const char *fmt, ...)
{
va_list ap;
va_start (ap, fmt);
AUD_vlog (AUDIO_CAP, fmt, ap);
va_end (ap);
AUD_log (AUDIO_CAP, "Reason: %s\n",
FMOD_ErrorString (FSOUND_GetError ()));
}
static void GCC_FMT_ATTR (2, 3) fmod_logerr2 (
const char *typ,
const char *fmt,
...
)
{
va_list ap;
AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ);
va_start (ap, fmt);
AUD_vlog (AUDIO_CAP, fmt, ap);
va_end (ap);
AUD_log (AUDIO_CAP, "Reason: %s\n",
FMOD_ErrorString (FSOUND_GetError ()));
}
static int fmod_write (SWVoiceOut *sw, void *buf, int len)
{
return audio_pcm_sw_write (sw, buf, len);
}
static void fmod_clear_sample (FMODVoiceOut *fmd)
{
HWVoiceOut *hw = &fmd->hw;
int status;
void *p1 = 0, *p2 = 0;
unsigned int len1 = 0, len2 = 0;
status = FSOUND_Sample_Lock (
fmd->fmod_sample,
0,
hw->samples << hw->info.shift,
&p1,
&p2,
&len1,
&len2
);
if (!status) {
fmod_logerr ("Failed to lock sample\n");
return;
}
if ((len1 & hw->info.align) || (len2 & hw->info.align)) {
dolog ("Lock returned misaligned length %d, %d, alignment %d\n",
len1, len2, hw->info.align + 1);
goto fail;
}
if ((len1 + len2) - (hw->samples << hw->info.shift)) {
dolog ("Lock returned incomplete length %d, %d\n",
len1 + len2, hw->samples << hw->info.shift);
goto fail;
}
audio_pcm_info_clear_buf (&hw->info, p1, hw->samples);
fail:
status = FSOUND_Sample_Unlock (fmd->fmod_sample, p1, p2, len1, len2);
if (!status) {
fmod_logerr ("Failed to unlock sample\n");
}
}
static void fmod_write_sample (HWVoiceOut *hw, uint8_t *dst, int dst_len)
{
int src_len1 = dst_len;
int src_len2 = 0;
int pos = hw->rpos + dst_len;
struct st_sample *src1 = hw->mix_buf + hw->rpos;
struct st_sample *src2 = NULL;
if (pos > hw->samples) {
src_len1 = hw->samples - hw->rpos;
src2 = hw->mix_buf;
src_len2 = dst_len - src_len1;
pos = src_len2;
}
if (src_len1) {
hw->clip (dst, src1, src_len1);
}
if (src_len2) {
dst = advance (dst, src_len1 << hw->info.shift);
hw->clip (dst, src2, src_len2);
}
hw->rpos = pos % hw->samples;
}
static int fmod_unlock_sample (FSOUND_SAMPLE *sample, void *p1, void *p2,
unsigned int blen1, unsigned int blen2)
{
int status = FSOUND_Sample_Unlock (sample, p1, p2, blen1, blen2);
if (!status) {
fmod_logerr ("Failed to unlock sample\n");
return -1;
}
return 0;
}
static int fmod_lock_sample (
FSOUND_SAMPLE *sample,
struct audio_pcm_info *info,
int pos,
int len,
void **p1,
void **p2,
unsigned int *blen1,
unsigned int *blen2
)
{
int status;
status = FSOUND_Sample_Lock (
sample,
pos << info->shift,
len << info->shift,
p1,
p2,
blen1,
blen2
);
if (!status) {
fmod_logerr ("Failed to lock sample\n");
return -1;
}
if ((*blen1 & info->align) || (*blen2 & info->align)) {
dolog ("Lock returned misaligned length %d, %d, alignment %d\n",
*blen1, *blen2, info->align + 1);
fmod_unlock_sample (sample, *p1, *p2, *blen1, *blen2);
*p1 = NULL - 1;
*p2 = NULL - 1;
*blen1 = ~0U;
*blen2 = ~0U;
return -1;
}
if (!*p1 && *blen1) {
dolog ("warning: !p1 && blen1=%d\n", *blen1);
*blen1 = 0;
}
if (!p2 && *blen2) {
dolog ("warning: !p2 && blen2=%d\n", *blen2);
*blen2 = 0;
}
return 0;
}
static int fmod_run_out (HWVoiceOut *hw)
{
FMODVoiceOut *fmd = (FMODVoiceOut *) hw;
int live, decr;
void *p1 = 0, *p2 = 0;
unsigned int blen1 = 0, blen2 = 0;
unsigned int len1 = 0, len2 = 0;
int nb_live;
live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
if (!live) {
return 0;
}
if (!hw->pending_disable && nb_live) {
ldebug ("live=%d nb_live=%d\n", live, nb_live);
return 0;
}
decr = live;
if (fmd->channel >= 0) {
int len = decr;
int old_pos = fmd->old_pos;
int ppos = FSOUND_GetCurrentPosition (fmd->channel);
if (ppos == old_pos || !ppos) {
return 0;
}
if ((old_pos < ppos) && ((old_pos + len) > ppos)) {
len = ppos - old_pos;
}
else {
if ((old_pos > ppos) && ((old_pos + len) > (ppos + hw->samples))) {
len = hw->samples - old_pos + ppos;
}
}
decr = len;
if (audio_bug (AUDIO_FUNC, decr < 0)) {
dolog ("decr=%d live=%d ppos=%d old_pos=%d len=%d\n",
decr, live, ppos, old_pos, len);
return 0;
}
}
if (!decr) {
return 0;
}
if (fmod_lock_sample (fmd->fmod_sample, &fmd->hw.info,
fmd->old_pos, decr,
&p1, &p2,
&blen1, &blen2)) {
return 0;
}
len1 = blen1 >> hw->info.shift;
len2 = blen2 >> hw->info.shift;
ldebug ("%p %p %d %d %d %d\n", p1, p2, len1, len2, blen1, blen2);
decr = len1 + len2;
if (p1 && len1) {
fmod_write_sample (hw, p1, len1);
}
if (p2 && len2) {
fmod_write_sample (hw, p2, len2);
}
fmod_unlock_sample (fmd->fmod_sample, p1, p2, blen1, blen2);
fmd->old_pos = (fmd->old_pos + decr) % hw->samples;
return decr;
}
static int aud_to_fmodfmt (audfmt_e fmt, int stereo)
{
int mode = FSOUND_LOOP_NORMAL;
switch (fmt) {
case AUD_FMT_S8:
mode |= FSOUND_SIGNED | FSOUND_8BITS;
break;
case AUD_FMT_U8:
mode |= FSOUND_UNSIGNED | FSOUND_8BITS;
break;
case AUD_FMT_S16:
mode |= FSOUND_SIGNED | FSOUND_16BITS;
break;
case AUD_FMT_U16:
mode |= FSOUND_UNSIGNED | FSOUND_16BITS;
break;
default:
dolog ("Internal logic error: Bad audio format %d\n", fmt);
#ifdef DEBUG_FMOD
abort ();
#endif
mode |= FSOUND_8BITS;
}
mode |= stereo ? FSOUND_STEREO : FSOUND_MONO;
return mode;
}
static void fmod_fini_out (HWVoiceOut *hw)
{
FMODVoiceOut *fmd = (FMODVoiceOut *) hw;
if (fmd->fmod_sample) {
FSOUND_Sample_Free (fmd->fmod_sample);
fmd->fmod_sample = 0;
if (fmd->channel >= 0) {
FSOUND_StopSound (fmd->channel);
}
}
}
static int fmod_init_out (HWVoiceOut *hw, struct audsettings *as)
{
int bits16, mode, channel;
FMODVoiceOut *fmd = (FMODVoiceOut *) hw;
struct audsettings obt_as = *as;
mode = aud_to_fmodfmt (as->fmt, as->nchannels == 2 ? 1 : 0);
fmd->fmod_sample = FSOUND_Sample_Alloc (
FSOUND_FREE, /* index */
conf.nb_samples, /* length */
mode, /* mode */
as->freq, /* freq */
255, /* volume */
128, /* pan */
255 /* priority */
);
if (!fmd->fmod_sample) {
fmod_logerr2 ("DAC", "Failed to allocate FMOD sample\n");
return -1;
}
channel = FSOUND_PlaySoundEx (FSOUND_FREE, fmd->fmod_sample, 0, 1);
if (channel < 0) {
fmod_logerr2 ("DAC", "Failed to start playing sound\n");
FSOUND_Sample_Free (fmd->fmod_sample);
return -1;
}
fmd->channel = channel;
/* FMOD always operates on little endian frames? */
obt_as.endianness = 0;
audio_pcm_init_info (&hw->info, &obt_as);
bits16 = (mode & FSOUND_16BITS) != 0;
hw->samples = conf.nb_samples;
return 0;
}
static int fmod_ctl_out (HWVoiceOut *hw, int cmd, ...)
{
int status;
FMODVoiceOut *fmd = (FMODVoiceOut *) hw;
switch (cmd) {
case VOICE_ENABLE:
fmod_clear_sample (fmd);
status = FSOUND_SetPaused (fmd->channel, 0);
if (!status) {
fmod_logerr ("Failed to resume channel %d\n", fmd->channel);
}
break;
case VOICE_DISABLE:
status = FSOUND_SetPaused (fmd->channel, 1);
if (!status) {
fmod_logerr ("Failed to pause channel %d\n", fmd->channel);
}
break;
}
return 0;
}
static int fmod_init_in (HWVoiceIn *hw, struct audsettings *as)
{
int bits16, mode;
FMODVoiceIn *fmd = (FMODVoiceIn *) hw;
struct audsettings obt_as = *as;
if (conf.broken_adc) {
return -1;
}
mode = aud_to_fmodfmt (as->fmt, as->nchannels == 2 ? 1 : 0);
fmd->fmod_sample = FSOUND_Sample_Alloc (
FSOUND_FREE, /* index */
conf.nb_samples, /* length */
mode, /* mode */
as->freq, /* freq */
255, /* volume */
128, /* pan */
255 /* priority */
);
if (!fmd->fmod_sample) {
fmod_logerr2 ("ADC", "Failed to allocate FMOD sample\n");
return -1;
}
/* FMOD always operates on little endian frames? */
obt_as.endianness = 0;
audio_pcm_init_info (&hw->info, &obt_as);
bits16 = (mode & FSOUND_16BITS) != 0;
hw->samples = conf.nb_samples;
return 0;
}
static void fmod_fini_in (HWVoiceIn *hw)
{
FMODVoiceIn *fmd = (FMODVoiceIn *) hw;
if (fmd->fmod_sample) {
FSOUND_Record_Stop ();
FSOUND_Sample_Free (fmd->fmod_sample);
fmd->fmod_sample = 0;
}
}
static int fmod_run_in (HWVoiceIn *hw)
{
FMODVoiceIn *fmd = (FMODVoiceIn *) hw;
int hwshift = hw->info.shift;
int live, dead, new_pos, len;
unsigned int blen1 = 0, blen2 = 0;
unsigned int len1, len2;
unsigned int decr;
void *p1, *p2;
live = audio_pcm_hw_get_live_in (hw);
dead = hw->samples - live;
if (!dead) {
return 0;
}
new_pos = FSOUND_Record_GetPosition ();
if (new_pos < 0) {
fmod_logerr ("Could not get recording position\n");
return 0;
}
len = audio_ring_dist (new_pos, hw->wpos, hw->samples);
if (!len) {
return 0;
}
len = audio_MIN (len, dead);
if (fmod_lock_sample (fmd->fmod_sample, &fmd->hw.info,
hw->wpos, len,
&p1, &p2,
&blen1, &blen2)) {
return 0;
}
len1 = blen1 >> hwshift;
len2 = blen2 >> hwshift;
decr = len1 + len2;
if (p1 && blen1) {
hw->conv (hw->conv_buf + hw->wpos, p1, len1, &nominal_volume);
}
if (p2 && len2) {
hw->conv (hw->conv_buf, p2, len2, &nominal_volume);
}
fmod_unlock_sample (fmd->fmod_sample, p1, p2, blen1, blen2);
hw->wpos = (hw->wpos + decr) % hw->samples;
return decr;
}
static struct {
const char *name;
int type;
} drvtab[] = {
{ .name = "none", .type = FSOUND_OUTPUT_NOSOUND },
#ifdef _WIN32
{ .name = "winmm", .type = FSOUND_OUTPUT_WINMM },
{ .name = "dsound", .type = FSOUND_OUTPUT_DSOUND },
{ .name = "a3d", .type = FSOUND_OUTPUT_A3D },
{ .name = "asio", .type = FSOUND_OUTPUT_ASIO },
#endif
#ifdef __linux__
{ .name = "oss", .type = FSOUND_OUTPUT_OSS },
{ .name = "alsa", .type = FSOUND_OUTPUT_ALSA },
{ .name = "esd", .type = FSOUND_OUTPUT_ESD },
#endif
#ifdef __APPLE__
{ .name = "mac", .type = FSOUND_OUTPUT_MAC },
#endif
#if 0
{ .name = "xbox", .type = FSOUND_OUTPUT_XBOX },
{ .name = "ps2", .type = FSOUND_OUTPUT_PS2 },
{ .name = "gcube", .type = FSOUND_OUTPUT_GC },
#endif
{ .name = "none-realtime", .type = FSOUND_OUTPUT_NOSOUND_NONREALTIME }
};
static void *fmod_audio_init (void)
{
size_t i;
double ver;
int status;
int output_type = -1;
const char *drv = conf.drvname;
ver = FSOUND_GetVersion ();
if (ver < FMOD_VERSION) {
dolog ("Wrong FMOD version %f, need at least %f\n", ver, FMOD_VERSION);
return NULL;
}
#ifdef __linux__
if (ver < 3.75) {
dolog ("FMOD before 3.75 has bug preventing ADC from working\n"
"ADC will be disabled.\n");
conf.broken_adc = 1;
}
#endif
if (drv) {
int found = 0;
for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
if (!strcmp (drv, drvtab[i].name)) {
output_type = drvtab[i].type;
found = 1;
break;
}
}
if (!found) {
dolog ("Unknown FMOD driver `%s'\n", drv);
dolog ("Valid drivers:\n");
for (i = 0; i < ARRAY_SIZE (drvtab); i++) {
dolog (" %s\n", drvtab[i].name);
}
}
}
if (output_type != -1) {
status = FSOUND_SetOutput (output_type);
if (!status) {
fmod_logerr ("FSOUND_SetOutput(%d) failed\n", output_type);
return NULL;
}
}
if (conf.bufsize) {
status = FSOUND_SetBufferSize (conf.bufsize);
if (!status) {
fmod_logerr ("FSOUND_SetBufferSize (%d) failed\n", conf.bufsize);
}
}
status = FSOUND_Init (conf.freq, conf.nb_channels, 0);
if (!status) {
fmod_logerr ("FSOUND_Init failed\n");
return NULL;
}
return &conf;
}
static int fmod_read (SWVoiceIn *sw, void *buf, int size)
{
return audio_pcm_sw_read (sw, buf, size);
}
static int fmod_ctl_in (HWVoiceIn *hw, int cmd, ...)
{
int status;
FMODVoiceIn *fmd = (FMODVoiceIn *) hw;
switch (cmd) {
case VOICE_ENABLE:
status = FSOUND_Record_StartSample (fmd->fmod_sample, 1);
if (!status) {
fmod_logerr ("Failed to start recording\n");
}
break;
case VOICE_DISABLE:
status = FSOUND_Record_Stop ();
if (!status) {
fmod_logerr ("Failed to stop recording\n");
}
break;
}
return 0;
}
static void fmod_audio_fini (void *opaque)
{
(void) opaque;
FSOUND_Close ();
}
static struct audio_option fmod_options[] = {
{
.name = "DRV",
.tag = AUD_OPT_STR,
.valp = &conf.drvname,
.descr = "FMOD driver"
},
{
.name = "FREQ",
.tag = AUD_OPT_INT,
.valp = &conf.freq,
.descr = "Default frequency"
},
{
.name = "SAMPLES",
.tag = AUD_OPT_INT,
.valp = &conf.nb_samples,
.descr = "Buffer size in samples"
},
{
.name = "CHANNELS",
.tag = AUD_OPT_INT,
.valp = &conf.nb_channels,
.descr = "Number of default channels (1 - mono, 2 - stereo)"
},
{
.name = "BUFSIZE",
.tag = AUD_OPT_INT,
.valp = &conf.bufsize,
.descr = "(undocumented)"
},
{ /* End of list */ }
};
static struct audio_pcm_ops fmod_pcm_ops = {
.init_out = fmod_init_out,
.fini_out = fmod_fini_out,
.run_out = fmod_run_out,
.write = fmod_write,
.ctl_out = fmod_ctl_out,
.init_in = fmod_init_in,
.fini_in = fmod_fini_in,
.run_in = fmod_run_in,
.read = fmod_read,
.ctl_in = fmod_ctl_in
};
struct audio_driver fmod_audio_driver = {
.name = "fmod",
.descr = "FMOD 3.xx http://www.fmod.org",
.options = fmod_options,
.init = fmod_audio_init,
.fini = fmod_audio_fini,
.pcm_ops = &fmod_pcm_ops,
.can_be_default = 1,
.max_voices_out = INT_MAX,
.max_voices_in = INT_MAX,
.voice_size_out = sizeof (FMODVoiceOut),
.voice_size_in = sizeof (FMODVoiceIn)
};
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