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-rw-r--r--audio/audio.c2172
1 files changed, 0 insertions, 2172 deletions
diff --git a/audio/audio.c b/audio/audio.c
deleted file mode 100644
index 5a77dac..0000000
--- a/audio/audio.c
+++ /dev/null
@@ -1,2172 +0,0 @@
-/*
- * QEMU Audio subsystem
- *
- * Copyright (c) 2007-2008 The Android Open Source Project
- * Copyright (c) 2003-2005 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 "hw/hw.h"
-#include "audio.h"
-#include "console.h"
-#include "qemu-timer.h"
-#include "sysemu.h"
-
-#define AUDIO_CAP "audio"
-#include "audio_int.h"
-#include "android/utils/system.h"
-#include "qemu_debug.h"
-#include "android/android.h"
-
-/* #define DEBUG_PLIVE */
-/* #define DEBUG_LIVE */
-/* #define DEBUG_OUT */
-/* #define DEBUG_CAPTURE */
-
-#define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown"
-
-static struct audio_driver *drvtab[] = {
-#ifdef CONFIG_ESD
- &esd_audio_driver,
-#endif
-#ifdef CONFIG_ALSA
- &alsa_audio_driver,
-#endif
-#ifdef CONFIG_COREAUDIO
- &coreaudio_audio_driver,
-#endif
-#ifdef CONFIG_DSOUND
- &dsound_audio_driver,
-#endif
-#ifdef CONFIG_FMOD
- &fmod_audio_driver,
-#endif
-#ifdef CONFIG_WINAUDIO
- &win_audio_driver,
-#endif
-#ifdef CONFIG_SDL
- &sdl_audio_driver,
-#endif
-#ifdef CONFIG_OSS
- &oss_audio_driver,
-#endif
- &no_audio_driver,
-#if 0 /* disabled WAV audio for now - until we find a user-friendly way to use it */
- &wav_audio_driver
-#endif
-};
-
-
-int
-audio_get_backend_count( int is_input )
-{
- int nn, count = 0;
-
- for (nn = 0; nn < sizeof(drvtab)/sizeof(drvtab[0]); nn++)
- {
- if (is_input) {
- if ( drvtab[nn]->max_voices_in > 0 )
- count += 1;
- } else {
- if ( drvtab[nn]->max_voices_out > 0 )
- count += 1;
- }
- }
- return count;
-}
-
-const char*
-audio_get_backend_name( int is_input, int index, const char* *pinfo )
-{
- int nn;
-
- index += 1;
- for (nn = 0; nn < sizeof(drvtab)/sizeof(drvtab[0]); nn++)
- {
- if (is_input) {
- if ( drvtab[nn]->max_voices_in > 0 ) {
- if ( --index == 0 ) {
- *pinfo = drvtab[nn]->descr;
- return drvtab[nn]->name;
- }
- }
- } else {
- if ( drvtab[nn]->max_voices_out > 0 ) {
- if ( --index == 0 ) {
- *pinfo = drvtab[nn]->descr;
- return drvtab[nn]->name;
- }
- }
- }
- }
- *pinfo = NULL;
- return NULL;
-}
-
-
-int
-audio_check_backend_name( int is_input, const char* name )
-{
- int nn;
-
- for (nn = 0; nn < sizeof(drvtab)/sizeof(drvtab[0]); nn++)
- {
- if ( !strcmp(drvtab[nn]->name, name) ) {
- if (is_input) {
- if (drvtab[nn]->max_voices_in > 0)
- return 1;
- } else {
- if (drvtab[nn]->max_voices_out > 0)
- return 1;
- }
- break;
- }
- }
- return 0;
-}
-
-
-struct fixed_settings {
- int enabled;
- int nb_voices;
- int greedy;
- audsettings_t settings;
-};
-
-static struct {
- struct fixed_settings fixed_out;
- struct fixed_settings fixed_in;
- union {
- int hz;
- int64_t ticks;
- } period;
- int plive;
- int log_to_monitor;
-} conf = {
- { /* DAC fixed settings */
- 1, /* enabled */
- 1, /* nb_voices */
- 1, /* greedy */
- {
- 44100, /* freq */
- 2, /* nchannels */
- AUD_FMT_S16, /* fmt */
- AUDIO_HOST_ENDIANNESS
- }
- },
-
- { /* ADC fixed settings */
- 1, /* enabled */
- 1, /* nb_voices */
- 1, /* greedy */
- {
- 44100, /* freq */
- 2, /* nchannels */
- AUD_FMT_S16, /* fmt */
- AUDIO_HOST_ENDIANNESS
- }
- },
-
- { 0 }, /* period */
- 0, /* plive */
- 0 /* log_to_monitor */
-};
-
-AudioState glob_audio_state;
-
-volume_t nominal_volume = {
- 0,
-#ifdef FLOAT_MIXENG
- 1.0,
- 1.0
-#else
- 1ULL << 32,
- 1ULL << 32
-#endif
-};
-
-/* 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);
-}
-
-#ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
-#error No its not
-#else
-int audio_bug (const char *funcname, int cond)
-{
- if (cond) {
- static int shown;
-
- AUD_log (NULL, "A bug was just triggered in %s\n", funcname);
- if (!shown) {
- shown = 1;
- AUD_log (NULL, "Save all your work and restart without audio\n");
- AUD_log (NULL, "Please send bug report to malc@pulsesoft.com\n");
- AUD_log (NULL, "I am sorry\n");
- }
- AUD_log (NULL, "Context:\n");
-
-#if defined AUDIO_BREAKPOINT_ON_BUG
-# if defined HOST_I386
-# if defined __GNUC__
- __asm__ ("int3");
-# elif defined _MSC_VER
- _asm _emit 0xcc;
-# else
- abort ();
-# endif
-# else
- abort ();
-# endif
-#endif
- }
-
- return cond;
-}
-#endif
-
-static inline int audio_bits_to_index (int bits)
-{
- switch (bits) {
- case 8:
- return 0;
-
- case 16:
- return 1;
-
- case 32:
- return 2;
-
- default:
- audio_bug ("bits_to_index", 1);
- AUD_log (NULL, "invalid bits %d\n", bits);
- return 0;
- }
-}
-
-void *audio_calloc (const char *funcname, int nmemb, size_t size)
-{
- int cond;
- size_t len;
-
- len = nmemb * size;
- cond = !nmemb || !size;
- cond |= nmemb < 0;
- cond |= len < size;
-
- if (audio_bug ("audio_calloc", cond)) {
- AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n",
- funcname);
- AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n", nmemb, size, len);
- return NULL;
- }
-
- return qemu_mallocz (len);
-}
-
-static char *audio_alloc_prefix (const char *s)
-{
- const char qemu_prefix[] = "QEMU_";
- size_t len;
- char *r;
-
- if (!s) {
- return NULL;
- }
-
- len = strlen (s);
- r = qemu_malloc (len + sizeof (qemu_prefix));
-
- if (r) {
- size_t i;
- char *u = r + sizeof (qemu_prefix) - 1;
-
- strcpy (r, qemu_prefix);
- strcat (r, s);
-
- for (i = 0; i < len; ++i) {
- u[i] = toupper (u[i]);
- }
- }
- return r;
-}
-
-static const char *audio_audfmt_to_string (audfmt_e fmt)
-{
- switch (fmt) {
- case AUD_FMT_U8:
- return "U8";
-
- case AUD_FMT_U16:
- return "U16";
-
- case AUD_FMT_S8:
- return "S8";
-
- case AUD_FMT_S16:
- return "S16";
-
- case AUD_FMT_U32:
- return "U32";
-
- case AUD_FMT_S32:
- return "S32";
- }
-
- dolog ("Bogus audfmt %d returning S16\n", fmt);
- return "S16";
-}
-
-static audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval,
- int *defaultp)
-{
- if (!strcasecmp (s, "u8")) {
- *defaultp = 0;
- return AUD_FMT_U8;
- }
- else if (!strcasecmp (s, "u16")) {
- *defaultp = 0;
- return AUD_FMT_U16;
- }
- else if (!strcasecmp (s, "u32")) {
- *defaultp = 0;
- return AUD_FMT_U32;
- }
- else if (!strcasecmp (s, "s8")) {
- *defaultp = 0;
- return AUD_FMT_S8;
- }
- else if (!strcasecmp (s, "s16")) {
- *defaultp = 0;
- return AUD_FMT_S16;
- }
- else if (!strcasecmp (s, "s32")) {
- *defaultp = 0;
- return AUD_FMT_S32;
- }
- else {
- dolog ("Bogus audio format `%s' using %s\n",
- s, audio_audfmt_to_string (defval));
- *defaultp = 1;
- return defval;
- }
-}
-
-static audfmt_e audio_get_conf_fmt (const char *envname,
- audfmt_e defval,
- int *defaultp)
-{
- const char *var = getenv (envname);
- if (!var) {
- *defaultp = 1;
- return defval;
- }
- return audio_string_to_audfmt (var, defval, defaultp);
-}
-
-static int audio_get_conf_int (const char *key, int defval, int *defaultp)
-{
- int val;
- char *strval;
-
- strval = getenv (key);
- if (strval) {
- *defaultp = 0;
- val = atoi (strval);
- return val;
- }
- else {
- *defaultp = 1;
- return defval;
- }
-}
-
-static const char *audio_get_conf_str (const char *key,
- const char *defval,
- int *defaultp)
-{
- const char *val = getenv (key);
- if (!val) {
- *defaultp = 1;
- return defval;
- }
- else {
- *defaultp = 0;
- return val;
- }
-}
-
-/* defined in android_sdl.c */
-extern void dprintn(const char* fmt, ...);
-extern void dprintnv(const char* fmt, va_list args);
-
-void AUD_vlog (const char *cap, const char *fmt, va_list ap)
-{
- if (conf.log_to_monitor) {
- if (cap) {
- term_printf ("%s: ", cap);
- }
-
- term_vprintf (fmt, ap);
- }
- else {
- if (!VERBOSE_CHECK(audio))
- return;
-
- if (cap) {
- dprintn("%s: ", cap);
- }
-
- dprintnv(fmt, ap);
- }
-}
-
-void AUD_log (const char *cap, const char *fmt, ...)
-{
- va_list ap;
-
- va_start (ap, fmt);
- AUD_vlog (cap, fmt, ap);
- va_end (ap);
-}
-
-static void audio_print_options (const char *prefix,
- struct audio_option *opt)
-{
- char *uprefix;
-
- if (!prefix) {
- dolog ("No prefix specified\n");
- return;
- }
-
- if (!opt) {
- dolog ("No options\n");
- return;
- }
-
- uprefix = audio_alloc_prefix (prefix);
-
- for (; opt->name; opt++) {
- const char *state = "default";
- printf (" %s_%s: ", uprefix, opt->name);
-
- if (opt->overriddenp && *opt->overriddenp) {
- state = "current";
- }
-
- switch (opt->tag) {
- case AUD_OPT_BOOL:
- {
- int *intp = opt->valp;
- printf ("boolean, %s = %d\n", state, *intp ? 1 : 0);
- }
- break;
-
- case AUD_OPT_INT:
- {
- int *intp = opt->valp;
- printf ("integer, %s = %d\n", state, *intp);
- }
- break;
-
- case AUD_OPT_FMT:
- {
- audfmt_e *fmtp = opt->valp;
- printf (
- "format, %s = %s, (one of: U8 S8 U16 S16 U32 S32)\n",
- state,
- audio_audfmt_to_string (*fmtp)
- );
- }
- break;
-
- case AUD_OPT_STR:
- {
- const char **strp = opt->valp;
- printf ("string, %s = %s\n",
- state,
- *strp ? *strp : "(not set)");
- }
- break;
-
- default:
- printf ("???\n");
- dolog ("Bad value tag for option %s_%s %d\n",
- uprefix, opt->name, opt->tag);
- break;
- }
- printf (" %s\n", opt->descr);
- }
-
- qemu_free (uprefix);
-}
-
-static void audio_process_options (const char *prefix,
- struct audio_option *opt)
-{
- char *optname;
- const char qemu_prefix[] = "QEMU_";
- size_t preflen;
-
- if (audio_bug (AUDIO_FUNC, !prefix)) {
- dolog ("prefix = NULL\n");
- return;
- }
-
- if (audio_bug (AUDIO_FUNC, !opt)) {
- dolog ("opt = NULL\n");
- return;
- }
-
- preflen = strlen (prefix);
-
- for (; opt->name; opt++) {
- size_t len, i;
- int def;
-
- if (!opt->valp) {
- dolog ("Option value pointer for `%s' is not set\n",
- opt->name);
- continue;
- }
-
- len = strlen (opt->name);
- /* len of opt->name + len of prefix + size of qemu_prefix
- * (includes trailing zero) + zero + underscore (on behalf of
- * sizeof) */
- optname = qemu_malloc (len + preflen + sizeof (qemu_prefix) + 1);
- if (!optname) {
- dolog ("Could not allocate memory for option name `%s'\n",
- opt->name);
- continue;
- }
-
- strcpy (optname, qemu_prefix);
-
- /* copy while upper-casing, including trailing zero */
- for (i = 0; i <= preflen; ++i) {
- optname[i + sizeof (qemu_prefix) - 1] = toupper (prefix[i]);
- }
- strcat (optname, "_");
- strcat (optname, opt->name);
-
- def = 1;
- switch (opt->tag) {
- case AUD_OPT_BOOL:
- case AUD_OPT_INT:
- {
- int *intp = opt->valp;
- *intp = audio_get_conf_int (optname, *intp, &def);
- }
- break;
-
- case AUD_OPT_FMT:
- {
- audfmt_e *fmtp = opt->valp;
- *fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
- }
- break;
-
- case AUD_OPT_STR:
- {
- const char **strp = opt->valp;
- *strp = audio_get_conf_str (optname, *strp, &def);
- }
- break;
-
- default:
- dolog ("Bad value tag for option `%s' - %d\n",
- optname, opt->tag);
- break;
- }
-
- if (!opt->overriddenp) {
- opt->overriddenp = &opt->overridden;
- }
- *opt->overriddenp = !def;
- qemu_free (optname);
- }
-}
-
-static void audio_print_settings (audsettings_t *as)
-{
- dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
-
- switch (as->fmt) {
- case AUD_FMT_S8:
- AUD_log (NULL, "S8");
- break;
- case AUD_FMT_U8:
- AUD_log (NULL, "U8");
- break;
- case AUD_FMT_S16:
- AUD_log (NULL, "S16");
- break;
- case AUD_FMT_U16:
- AUD_log (NULL, "U16");
- break;
- default:
- AUD_log (NULL, "invalid(%d)", as->fmt);
- break;
- }
-
- AUD_log (NULL, " endianness=");
- switch (as->endianness) {
- case 0:
- AUD_log (NULL, "little");
- break;
- case 1:
- AUD_log (NULL, "big");
- break;
- default:
- AUD_log (NULL, "invalid");
- break;
- }
- AUD_log (NULL, "\n");
-}
-
-static int audio_validate_settings (audsettings_t *as)
-{
- int invalid;
-
- invalid = as->nchannels != 1 && as->nchannels != 2;
- invalid |= as->endianness != 0 && as->endianness != 1;
-
- switch (as->fmt) {
- case AUD_FMT_S8:
- case AUD_FMT_U8:
- case AUD_FMT_S16:
- case AUD_FMT_U16:
- case AUD_FMT_S32:
- case AUD_FMT_U32:
- break;
- default:
- invalid = 1;
- break;
- }
-
- invalid |= as->freq <= 0;
- return invalid ? -1 : 0;
-}
-
-static int audio_pcm_info_eq (struct audio_pcm_info *info, audsettings_t *as)
-{
- int bits = 8, sign = 0;
-
- switch (as->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;
- case AUD_FMT_S32:
- sign = 1;
- case AUD_FMT_U32:
- bits = 32;
- break;
- }
- return info->freq == as->freq
- && info->nchannels == as->nchannels
- && info->sign == sign
- && info->bits == bits
- && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS);
-}
-
-void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as)
-{
- int bits = 8, sign = 0, shift = 0;
-
- switch (as->fmt) {
- case AUD_FMT_S8:
- sign = 1;
- case AUD_FMT_U8:
- break;
-
- case AUD_FMT_S16:
- sign = 1;
- case AUD_FMT_U16:
- bits = 16;
- shift = 1;
- break;
-
- case AUD_FMT_S32:
- sign = 1;
- case AUD_FMT_U32:
- bits = 32;
- shift = 2;
- break;
- }
-
- info->freq = as->freq;
- info->bits = bits;
- info->sign = sign;
- info->nchannels = as->nchannels;
- info->shift = (as->nchannels == 2) + shift;
- info->align = (1 << info->shift) - 1;
- info->bytes_per_second = info->freq << info->shift;
- info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS);
-}
-
-void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
-{
- if (!len) {
- return;
- }
-
- if (info->sign) {
- memset (buf, 0x00, len << info->shift);
- }
- else {
- switch (info->bits) {
- case 8:
- memset (buf, 0x80, len << info->shift);
- break;
-
- case 16:
- {
- int i;
- uint16_t *p = buf;
- int shift = info->nchannels - 1;
- short s = INT16_MAX;
-
- if (info->swap_endianness) {
- s = bswap16 (s);
- }
-
- for (i = 0; i < len << shift; i++) {
- p[i] = s;
- }
- }
- break;
-
- case 32:
- {
- int i;
- uint32_t *p = buf;
- int shift = info->nchannels - 1;
- int32_t s = INT32_MAX;
-
- if (info->swap_endianness) {
- s = bswap32 (s);
- }
-
- for (i = 0; i < len << shift; i++) {
- p[i] = s;
- }
- }
- break;
-
- default:
- AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n",
- info->bits);
- break;
- }
- }
-}
-
-/*
- * Capture
- */
-static void noop_conv (st_sample_t *dst, const void *src,
- int samples, volume_t *vol)
-{
- (void) src;
- (void) dst;
- (void) samples;
- (void) vol;
-}
-
-static CaptureVoiceOut *audio_pcm_capture_find_specific (
- AudioState *s,
- audsettings_t *as
- )
-{
- CaptureVoiceOut *cap;
-
- for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
- if (audio_pcm_info_eq (&cap->hw.info, as)) {
- return cap;
- }
- }
- return NULL;
-}
-
-static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd)
-{
- struct capture_callback *cb;
-
-#ifdef DEBUG_CAPTURE
- dolog ("notification %d sent\n", cmd);
-#endif
- for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
- cb->ops.notify (cb->opaque, cmd);
- }
-}
-
-static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled)
-{
- if (cap->hw.enabled != enabled) {
- audcnotification_e cmd;
- cap->hw.enabled = enabled;
- cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE;
- audio_notify_capture (cap, cmd);
- }
-}
-
-static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap)
-{
- HWVoiceOut *hw = &cap->hw;
- SWVoiceOut *sw;
- int enabled = 0;
-
- for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
- if (sw->active) {
- enabled = 1;
- break;
- }
- }
- audio_capture_maybe_changed (cap, enabled);
-}
-
-static void audio_detach_capture (HWVoiceOut *hw)
-{
- SWVoiceCap *sc = hw->cap_head.lh_first;
-
- while (sc) {
- SWVoiceCap *sc1 = sc->entries.le_next;
- SWVoiceOut *sw = &sc->sw;
- CaptureVoiceOut *cap = sc->cap;
- int was_active = sw->active;
-
- if (sw->rate) {
- st_rate_stop (sw->rate);
- sw->rate = NULL;
- }
-
- LIST_REMOVE (sw, entries);
- LIST_REMOVE (sc, entries);
- qemu_free (sc);
- if (was_active) {
- /* We have removed soft voice from the capture:
- this might have changed the overall status of the capture
- since this might have been the only active voice */
- audio_recalc_and_notify_capture (cap);
- }
- sc = sc1;
- }
-}
-
-static int audio_attach_capture (AudioState *s, HWVoiceOut *hw)
-{
- CaptureVoiceOut *cap;
-
- audio_detach_capture (hw);
- for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
- SWVoiceCap *sc;
- SWVoiceOut *sw;
- HWVoiceOut *hw_cap = &cap->hw;
-
- sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc));
- if (!sc) {
- dolog ("Could not allocate soft capture voice (%zu bytes)\n",
- sizeof (*sc));
- return -1;
- }
-
- sc->cap = cap;
- sw = &sc->sw;
- sw->hw = hw_cap;
- sw->info = hw->info;
- sw->empty = 1;
- sw->active = hw->enabled;
- sw->conv = noop_conv;
- sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq;
- sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq);
- if (!sw->rate) {
- dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw));
- qemu_free (sw);
- return -1;
- }
- LIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries);
- LIST_INSERT_HEAD (&hw->cap_head, sc, entries);
-#ifdef DEBUG_CAPTURE
- asprintf (&sw->name, "for %p %d,%d,%d",
- hw, sw->info.freq, sw->info.bits, sw->info.nchannels);
- dolog ("Added %s active = %d\n", sw->name, sw->active);
-#endif
- if (sw->active) {
- audio_capture_maybe_changed (cap, 1);
- }
- }
- return 0;
-}
-
-/*
- * Hard voice (capture)
- */
-static int audio_pcm_hw_find_min_in (HWVoiceIn *hw)
-{
- SWVoiceIn *sw;
- int m = hw->total_samples_captured;
-
- for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
- if (sw->active) {
- m = audio_MIN (m, sw->total_hw_samples_acquired);
- }
- }
- return m;
-}
-
-int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
-{
- int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
- if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
- dolog ("live=%d hw->samples=%d\n", live, hw->samples);
- return 0;
- }
- return live;
-}
-
-/*
- * Soft voice (capture)
- */
-static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw)
-{
- HWVoiceIn *hw = sw->hw;
- int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
- int rpos;
-
- if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
- dolog ("live=%d hw->samples=%d\n", live, hw->samples);
- return 0;
- }
-
- rpos = hw->wpos - live;
- if (rpos >= 0) {
- return rpos;
- }
- else {
- return hw->samples + rpos;
- }
-}
-
-int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size)
-{
- HWVoiceIn *hw = sw->hw;
- int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0;
- st_sample_t *src, *dst = sw->buf;
-
- rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples;
-
- live = hw->total_samples_captured - sw->total_hw_samples_acquired;
- if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
- dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
- return 0;
- }
-
- samples = size >> sw->info.shift;
- if (!live) {
- return 0;
- }
-
- swlim = (live * sw->ratio) >> 32;
- swlim = audio_MIN (swlim, samples);
-
- while (swlim) {
- src = hw->conv_buf + rpos;
- isamp = hw->wpos - rpos;
- /* XXX: <= ? */
- if (isamp <= 0) {
- isamp = hw->samples - rpos;
- }
-
- if (!isamp) {
- break;
- }
- osamp = swlim;
-
- if (audio_bug (AUDIO_FUNC, osamp < 0)) {
- dolog ("osamp=%d\n", osamp);
- return 0;
- }
-
- st_rate_flow (sw->rate, src, dst, &isamp, &osamp);
- swlim -= osamp;
- rpos = (rpos + isamp) % hw->samples;
- dst += osamp;
- ret += osamp;
- total += isamp;
- }
-
- sw->clip (buf, sw->buf, ret);
- sw->total_hw_samples_acquired += total;
- return ret << sw->info.shift;
-}
-
-/*
- * Hard voice (playback)
- */
-static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep)
-{
- SWVoiceOut *sw;
- int m = INT_MAX;
- int nb_live = 0;
-
- for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
- if (sw->active || !sw->empty) {
- m = audio_MIN (m, sw->total_hw_samples_mixed);
- nb_live += 1;
- }
- }
-
- *nb_livep = nb_live;
- return m;
-}
-
-int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live)
-{
- int smin;
-
- smin = audio_pcm_hw_find_min_out (hw, nb_live);
-
- if (!*nb_live) {
- return 0;
- }
- else {
- int live = smin;
-
- if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
- dolog ("live=%d hw->samples=%d\n", live, hw->samples);
- return 0;
- }
- return live;
- }
-}
-
-int audio_pcm_hw_get_live_out (HWVoiceOut *hw)
-{
- int nb_live;
- int live;
-
- live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
- if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
- dolog ("live=%d hw->samples=%d\n", live, hw->samples);
- return 0;
- }
- return live;
-}
-
-/*
- * Soft voice (playback)
- */
-int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size)
-{
- int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
- int ret = 0, pos = 0, total = 0;
-
- if (!sw) {
- return size;
- }
-
- hwsamples = sw->hw->samples;
-
- live = sw->total_hw_samples_mixed;
- if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){
- dolog ("live=%d hw->samples=%d\n", live, hwsamples);
- return 0;
- }
-
- if (live == hwsamples) {
-#ifdef DEBUG_OUT
- dolog ("%s is full %d\n", sw->name, live);
-#endif
- return 0;
- }
-
- wpos = (sw->hw->rpos + live) % hwsamples;
- samples = size >> sw->info.shift;
-
- dead = hwsamples - live;
- swlim = ((int64_t) dead << 32) / sw->ratio;
- swlim = audio_MIN (swlim, samples);
- if (swlim) {
- sw->conv (sw->buf, buf, swlim, &sw->vol);
- }
-
- while (swlim) {
- dead = hwsamples - live;
- left = hwsamples - wpos;
- blck = audio_MIN (dead, left);
- if (!blck) {
- break;
- }
- isamp = swlim;
- osamp = blck;
- st_rate_flow_mix (
- sw->rate,
- sw->buf + pos,
- sw->hw->mix_buf + wpos,
- &isamp,
- &osamp
- );
- ret += isamp;
- swlim -= isamp;
- pos += isamp;
- live += osamp;
- wpos = (wpos + osamp) % hwsamples;
- total += osamp;
- }
-
- sw->total_hw_samples_mixed += total;
- sw->empty = sw->total_hw_samples_mixed == 0;
-
-#ifdef DEBUG_OUT
- dolog (
- "%s: write size %d ret %d total sw %d\n",
- SW_NAME (sw),
- size >> sw->info.shift,
- ret,
- sw->total_hw_samples_mixed
- );
-#endif
-
- return ret << sw->info.shift;
-}
-
-#ifdef DEBUG_AUDIO
-static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
-{
- dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
- cap, info->bits, info->sign, info->freq, info->nchannels);
-}
-#endif
-
-#define DAC
-#include "audio_template.h"
-#undef DAC
-#include "audio_template.h"
-
-int AUD_write (SWVoiceOut *sw, void *buf, int size)
-{
- int bytes;
-
- if (!sw) {
- /* XXX: Consider options */
- return size;
- }
-
- if (!sw->hw->enabled) {
- dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
- return 0;
- }
-
- BEGIN_NOSIGALRM
- bytes = sw->hw->pcm_ops->write (sw, buf, size);
- END_NOSIGALRM
- return bytes;
-}
-
-int AUD_read (SWVoiceIn *sw, void *buf, int size)
-{
- int bytes;
-
- if (!sw) {
- /* XXX: Consider options */
- return size;
- }
-
- if (!sw->hw->enabled) {
- dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
- return 0;
- }
-
- BEGIN_NOSIGALRM
- bytes = sw->hw->pcm_ops->read (sw, buf, size);
- END_NOSIGALRM
- return bytes;
-}
-
-int AUD_get_buffer_size_out (SWVoiceOut *sw)
-{
- return sw->hw->samples << sw->hw->info.shift;
-}
-
-void AUD_set_active_out (SWVoiceOut *sw, int on)
-{
- HWVoiceOut *hw;
-
- if (!sw) {
- return;
- }
-
- hw = sw->hw;
- if (sw->active != on) {
- SWVoiceOut *temp_sw;
- SWVoiceCap *sc;
-
- if (on) {
- hw->pending_disable = 0;
- if (!hw->enabled) {
- hw->enabled = 1;
- BEGIN_NOSIGALRM
- hw->pcm_ops->ctl_out (hw, VOICE_ENABLE);
- END_NOSIGALRM
- }
- }
- else {
- if (hw->enabled) {
- int nb_active = 0;
-
- for (temp_sw = hw->sw_head.lh_first; temp_sw;
- temp_sw = temp_sw->entries.le_next) {
- nb_active += temp_sw->active != 0;
- }
-
- hw->pending_disable = nb_active == 1;
- }
- }
-
- for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
- sc->sw.active = hw->enabled;
- if (hw->enabled) {
- audio_capture_maybe_changed (sc->cap, 1);
- }
- }
- sw->active = on;
- }
-}
-
-void AUD_set_active_in (SWVoiceIn *sw, int on)
-{
- HWVoiceIn *hw;
-
- if (!sw) {
- return;
- }
-
- hw = sw->hw;
- if (sw->active != on) {
- SWVoiceIn *temp_sw;
-
- if (on) {
- if (!hw->enabled) {
- hw->enabled = 1;
- BEGIN_NOSIGALRM
- hw->pcm_ops->ctl_in (hw, VOICE_ENABLE);
- END_NOSIGALRM
- }
- sw->total_hw_samples_acquired = hw->total_samples_captured;
- }
- else {
- if (hw->enabled) {
- int nb_active = 0;
-
- for (temp_sw = hw->sw_head.lh_first; temp_sw;
- temp_sw = temp_sw->entries.le_next) {
- nb_active += temp_sw->active != 0;
- }
-
- if (nb_active == 1) {
- hw->enabled = 0;
- BEGIN_NOSIGALRM
- hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
- END_NOSIGALRM
- }
- }
- }
- sw->active = on;
- }
-}
-
-static int audio_get_avail (SWVoiceIn *sw)
-{
- int live;
-
- if (!sw) {
- return 0;
- }
-
- live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired;
- if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
- dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
- return 0;
- }
-
- ldebug (
- "%s: get_avail live %d ret %" PRId64 "\n",
- SW_NAME (sw),
- live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
- );
-
- return (((int64_t) live << 32) / sw->ratio) << sw->info.shift;
-}
-
-static int audio_get_free (SWVoiceOut *sw)
-{
- int live, dead;
-
- if (!sw) {
- return 0;
- }
-
- live = sw->total_hw_samples_mixed;
-
- if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) {
- dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
- return 0;
- }
-
- dead = sw->hw->samples - live;
-
-#ifdef DEBUG_OUT
- dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n",
- SW_NAME (sw),
- live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
-#endif
-
- return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift;
-}
-
-static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples)
-{
- int n;
-
- if (hw->enabled) {
- SWVoiceCap *sc;
-
- for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
- SWVoiceOut *sw = &sc->sw;
- int rpos2 = rpos;
-
- n = samples;
- while (n) {
- int till_end_of_hw = hw->samples - rpos2;
- int to_write = audio_MIN (till_end_of_hw, n);
- int bytes = to_write << hw->info.shift;
- int written;
-
- sw->buf = hw->mix_buf + rpos2;
- written = audio_pcm_sw_write (sw, NULL, bytes);
- if (written - bytes) {
- dolog ("Could not mix %d bytes into a capture "
- "buffer, mixed %d\n",
- bytes, written);
- break;
- }
- n -= to_write;
- rpos2 = (rpos2 + to_write) % hw->samples;
- }
- }
- }
-
- n = audio_MIN (samples, hw->samples - rpos);
- mixeng_clear (hw->mix_buf + rpos, n);
- mixeng_clear (hw->mix_buf, samples - n);
-}
-
-static void audio_run_out (AudioState *s)
-{
- HWVoiceOut *hw = NULL;
- SWVoiceOut *sw;
-
- while ((hw = audio_pcm_hw_find_any_enabled_out (s, hw))) {
- int played;
- int live, free, nb_live, cleanup_required, prev_rpos;
-
- live = audio_pcm_hw_get_live_out2 (hw, &nb_live);
- if (!nb_live) {
- live = 0;
- }
-
- if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) {
- dolog ("live=%d hw->samples=%d\n", live, hw->samples);
- continue;
- }
-
- if (hw->pending_disable && !nb_live) {
- SWVoiceCap *sc;
-#ifdef DEBUG_OUT
- dolog ("Disabling voice\n");
-#endif
- hw->enabled = 0;
- hw->pending_disable = 0;
- BEGIN_NOSIGALRM
- hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
- END_NOSIGALRM
- for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) {
- sc->sw.active = 0;
- audio_recalc_and_notify_capture (sc->cap);
- }
- continue;
- }
-
- if (!live) {
- for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
- if (sw->active) {
- free = audio_get_free (sw);
- if (free > 0) {
- sw->callback.fn (sw->callback.opaque, free);
- }
- }
- }
- continue;
- }
-
- prev_rpos = hw->rpos;
- BEGIN_NOSIGALRM
- played = hw->pcm_ops->run_out (hw);
- END_NOSIGALRM
- if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
- dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
- hw->rpos, hw->samples, played);
- hw->rpos = 0;
- }
-
-#ifdef DEBUG_OUT
- dolog ("played=%d\n", played);
-#endif
-
- if (played) {
- hw->ts_helper += played;
- audio_capture_mix_and_clear (hw, prev_rpos, played);
- }
-
- cleanup_required = 0;
- for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
- if (!sw->active && sw->empty) {
- continue;
- }
-
- if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
- dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
- played, sw->total_hw_samples_mixed);
- played = sw->total_hw_samples_mixed;
- }
-
- sw->total_hw_samples_mixed -= played;
-
- if (!sw->total_hw_samples_mixed) {
- sw->empty = 1;
- cleanup_required |= !sw->active && !sw->callback.fn;
- }
-
- if (sw->active) {
- free = audio_get_free (sw);
- if (free > 0) {
- sw->callback.fn (sw->callback.opaque, free);
- }
- }
- }
-
- if (cleanup_required) {
- SWVoiceOut *sw1;
-
- sw = hw->sw_head.lh_first;
- while (sw) {
- sw1 = sw->entries.le_next;
- if (!sw->active && !sw->callback.fn) {
-#ifdef DEBUG_PLIVE
- dolog ("Finishing with old voice\n");
-#endif
- audio_close_out (s, sw);
- }
- sw = sw1;
- }
- }
- }
-}
-
-static void audio_run_in (AudioState *s)
-{
- HWVoiceIn *hw = NULL;
-
- while ((hw = audio_pcm_hw_find_any_enabled_in (s, hw))) {
- SWVoiceIn *sw;
- int captured, min;
-
- BEGIN_NOSIGALRM
- captured = hw->pcm_ops->run_in (hw);
- END_NOSIGALRM
-
- min = audio_pcm_hw_find_min_in (hw);
- hw->total_samples_captured += captured - min;
- hw->ts_helper += captured;
-
- for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
- sw->total_hw_samples_acquired -= min;
-
- if (sw->active) {
- int avail;
-
- avail = audio_get_avail (sw);
- if (avail > 0) {
- sw->callback.fn (sw->callback.opaque, avail);
- }
- }
- }
- }
-}
-
-static void audio_run_capture (AudioState *s)
-{
- CaptureVoiceOut *cap;
-
- for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) {
- int live, rpos, captured;
- HWVoiceOut *hw = &cap->hw;
- SWVoiceOut *sw;
-
- captured = live = audio_pcm_hw_get_live_out (hw);
- rpos = hw->rpos;
- while (live) {
- int left = hw->samples - rpos;
- int to_capture = audio_MIN (live, left);
- st_sample_t *src;
- struct capture_callback *cb;
-
- src = hw->mix_buf + rpos;
- hw->clip (cap->buf, src, to_capture);
- mixeng_clear (src, to_capture);
-
- for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
- cb->ops.capture (cb->opaque, cap->buf,
- to_capture << hw->info.shift);
- }
- rpos = (rpos + to_capture) % hw->samples;
- live -= to_capture;
- }
- hw->rpos = rpos;
-
- for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
- if (!sw->active && sw->empty) {
- continue;
- }
-
- if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) {
- dolog ("captured=%d sw->total_hw_samples_mixed=%d\n",
- captured, sw->total_hw_samples_mixed);
- captured = sw->total_hw_samples_mixed;
- }
-
- sw->total_hw_samples_mixed -= captured;
- sw->empty = sw->total_hw_samples_mixed == 0;
- }
- }
-}
-
-static void audio_timer (void *opaque)
-{
- AudioState* s = opaque;
-#if 0
-#define MAX_DIFFS 1000
- int64_t now = qemu_get_clock(vm_clock);
- static int64_t last = 0;
- static float diffs[MAX_DIFFS];
- static int num_diffs;
-
- if (last == 0)
- last = now;
- else {
- diffs[num_diffs] = (float)((now-last)/1e6); /* last diff in ms */
- if (++num_diffs == MAX_DIFFS) {
- double min_diff = 1e6, max_diff = -1e6;
- double all_diff = 0.;
- int nn;
-
- for (nn = 0; nn < num_diffs; nn++) {
- if (diffs[nn] < min_diff) min_diff = diffs[nn];
- if (diffs[nn] > max_diff) max_diff = diffs[nn];
- all_diff += diffs[nn];
- }
- all_diff *= 1.0/num_diffs;
- printf("audio timer: min_diff=%6.2g max_diff=%6.2g avg_diff=%6.2g samples=%d\n",
- min_diff, max_diff, all_diff, num_diffs);
- num_diffs = 0;
- }
- }
- last = now;
-#endif
- audio_run_out (s);
- audio_run_in (s);
- audio_run_capture (s);
-
- qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
-}
-
-static struct audio_option audio_options[] = {
- /* DAC */
- {"DAC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_out.enabled,
- "Use fixed settings for host DAC", NULL, 0},
-
- {"DAC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_out.settings.freq,
- "Frequency for fixed host DAC", NULL, 0},
-
- {"DAC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_out.settings.fmt,
- "Format for fixed host DAC", NULL, 0},
-
- {"DAC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_out.settings.nchannels,
- "Number of channels for fixed DAC (1 - mono, 2 - stereo)", NULL, 0},
-
- {"DAC_VOICES", AUD_OPT_INT, &conf.fixed_out.nb_voices,
- "Number of voices for DAC", NULL, 0},
-
- /* ADC */
- {"ADC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_in.enabled,
- "Use fixed settings for host ADC", NULL, 0},
-
- {"ADC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_in.settings.freq,
- "Frequency for fixed host ADC", NULL, 0},
-
- {"ADC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_in.settings.fmt,
- "Format for fixed host ADC", NULL, 0},
-
- {"ADC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_in.settings.nchannels,
- "Number of channels for fixed ADC (1 - mono, 2 - stereo)", NULL, 0},
-
- {"ADC_VOICES", AUD_OPT_INT, &conf.fixed_in.nb_voices,
- "Number of voices for ADC", NULL, 0},
-
- /* Misc */
- {"TIMER_PERIOD", AUD_OPT_INT, &conf.period.hz,
- "Timer period in HZ (0 - use lowest possible)", NULL, 0},
-
- {"PLIVE", AUD_OPT_BOOL, &conf.plive,
- "(undocumented)", NULL, 0},
-
- {"LOG_TO_MONITOR", AUD_OPT_BOOL, &conf.log_to_monitor,
- "print logging messages to monitor instead of stderr", NULL, 0},
-
- {NULL, 0, NULL, NULL, NULL, 0}
-};
-
-static void audio_pp_nb_voices (const char *typ, int nb)
-{
- switch (nb) {
- case 0:
- printf ("Does not support %s\n", typ);
- break;
- case 1:
- printf ("One %s voice\n", typ);
- break;
- case INT_MAX:
- printf ("Theoretically supports many %s voices\n", typ);
- break;
- default:
- printf ("Theoretically supports upto %d %s voices\n", nb, typ);
- break;
- }
-
-}
-
-void AUD_help (void)
-{
- size_t i;
-
- audio_process_options ("AUDIO", audio_options);
- for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
- struct audio_driver *d = drvtab[i];
- if (d->options) {
- audio_process_options (d->name, d->options);
- }
- }
-
- printf ("Audio options:\n");
- audio_print_options ("AUDIO", audio_options);
- printf ("\n");
-
- printf ("Available drivers:\n");
-
- for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
- struct audio_driver *d = drvtab[i];
-
- printf ("Name: %s\n", d->name);
- printf ("Description: %s\n", d->descr);
-
- audio_pp_nb_voices ("playback", d->max_voices_out);
- audio_pp_nb_voices ("capture", d->max_voices_in);
-
- if (d->options) {
- printf ("Options:\n");
- audio_print_options (d->name, d->options);
- }
- else {
- printf ("No options\n");
- }
- printf ("\n");
- }
-
- printf (
- "Options are settable through environment variables.\n"
- "Example:\n"
-#ifdef _WIN32
- " set QEMU_AUDIO_DRV=wav\n"
- " set QEMU_WAV_PATH=c:\\tune.wav\n"
-#else
- " export QEMU_AUDIO_DRV=wav\n"
- " export QEMU_WAV_PATH=$HOME/tune.wav\n"
- "(for csh replace export with setenv in the above)\n"
-#endif
- " qemu ...\n\n"
- );
-}
-
-static int audio_driver_init (AudioState *s, struct audio_driver *drv, int out)
-{
- void* opaque;
-
- if (drv->options) {
- audio_process_options (drv->name, drv->options);
- }
-
- /* is the driver already initialized ? */
- if (out) {
- if (drv == s->drv_in) {
- s->drv_out = drv;
- s->drv_out_opaque = s->drv_in_opaque;
- return 0;
- }
- } else {
- if (drv == s->drv_out) {
- s->drv_in = drv;
- s->drv_in_opaque = s->drv_out_opaque;
- return 0;
- }
- }
-
- BEGIN_NOSIGALRM
- opaque = drv->init();
- END_NOSIGALRM
-
- if (opaque != NULL) {
- audio_init_nb_voices_out (s, drv);
- audio_init_nb_voices_in (s, drv);
- if (out) {
- s->drv_out = drv;
- s->drv_out_opaque = opaque;
- } else {
- s->drv_in = drv;
- s->drv_in_opaque = opaque;
- }
- return 0;
- }
- else {
- dolog ("Could not init `%s' audio driver\n", drv->name);
- return -1;
- }
-}
-
-static void audio_vm_change_state_handler (void *opaque, int running)
-{
- AudioState *s = opaque;
- HWVoiceOut *hwo = NULL;
- HWVoiceIn *hwi = NULL;
- int op = running ? VOICE_ENABLE : VOICE_DISABLE;
-
- BEGIN_NOSIGALRM
- while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
- hwo->pcm_ops->ctl_out (hwo, op);
- }
-
- while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
- hwi->pcm_ops->ctl_in (hwi, op);
- }
- END_NOSIGALRM
-}
-
-// to make sure audio_atexit() is only called once
-static int initialized = 0;
-
-static void audio_atexit (void)
-{
- AudioState *s = &glob_audio_state;
- HWVoiceOut *hwo = NULL;
- HWVoiceIn *hwi = NULL;
-
- if (!initialized) return;
- initialized = 0;
-
- BEGIN_NOSIGALRM
- while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
- SWVoiceCap *sc;
-
- hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
- hwo->pcm_ops->fini_out (hwo);
-
- for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) {
- CaptureVoiceOut *cap = sc->cap;
- struct capture_callback *cb;
-
- for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
- cb->ops.destroy (cb->opaque);
- }
- }
- }
-
- while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
- hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
- hwi->pcm_ops->fini_in (hwi);
- }
-
- if (s->drv_in) {
- s->drv_in->fini (s->drv_in_opaque);
- }
- if (s->drv_out) {
- s->drv_out->fini (s->drv_out_opaque);
- }
- END_NOSIGALRM
-}
-
-static void audio_save (QEMUFile *f, void *opaque)
-{
- (void) f;
- (void) opaque;
-}
-
-static int audio_load (QEMUFile *f, void *opaque, int version_id)
-{
- (void) f;
- (void) opaque;
-
- if (version_id != 1) {
- return -EINVAL;
- }
-
- return 0;
-}
-
-void AUD_register_card (AudioState *s, const char *name, QEMUSoundCard *card)
-{
- card->audio = s;
- card->name = qemu_strdup (name);
- memset (&card->entries, 0, sizeof (card->entries));
- LIST_INSERT_HEAD (&s->card_head, card, entries);
-}
-
-void AUD_remove_card (QEMUSoundCard *card)
-{
- LIST_REMOVE (card, entries);
- card->audio = NULL;
- qemu_free (card->name);
-}
-
-static int
-find_audio_driver( AudioState* s, int out )
-{
- int i, done = 0, def;
- const char* envname;
- const char* drvname;
- struct audio_driver* drv = NULL;
- const char* drvtype = out ? "output" : "input";
-
- envname = out ? "QEMU_AUDIO_OUT_DRV" : "QEMU_AUDIO_IN_DRV";
- drvname = audio_get_conf_str(envname, NULL, &def);
- if (drvname == NULL) {
- drvname = audio_get_conf_str("QEMU_AUDIO_DRV", NULL, &def);
- }
-
- if (drvname != NULL) { /* look for a specific driver */
- for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
- if (!strcmp (drvname, drvtab[i]->name)) {
- drv = drvtab[i];
- break;
- }
- }
- }
-
- if (drv != NULL) {
- done = !audio_driver_init (s, drv, out);
- if (!done) {
- dolog ("Could not initialize '%s' %s audio backend, trying default one.\n",
- drvname, drvtype);
- dolog ("Run with -qemu -audio-help to list available backends\n");
- drv = NULL;
- }
- }
-
- if (!drv) {
- for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
- if (drvtab[i]->can_be_default) {
- drv = drvtab[i];
- done = !audio_driver_init (s, drv, out);
- if (done)
- break;
- }
- }
- }
-
- if (!done) {
- drv = &no_audio_driver;
- done = !audio_driver_init (s, drv, out);
- if (!done) {
- /* this should never happen */
- dolog ("Could not initialize audio subsystem\n");
- return -1;
- }
- dolog ("warning: Could not find suitable audio %s backend\n", drvtype);
- }
-
- if (VERBOSE_CHECK(init))
- dprint("using '%s' audio %s backend", drv->name, drvtype );
- return 0;
-}
-
-
-AudioState *AUD_init (void)
-{
- AudioState *s = &glob_audio_state;
-
- LIST_INIT (&s->hw_head_out);
- LIST_INIT (&s->hw_head_in);
- LIST_INIT (&s->cap_head);
- atexit (audio_atexit);
-
- s->ts = qemu_new_timer (vm_clock, audio_timer, s);
- if (!s->ts) {
- dolog ("Could not create audio timer\n");
- return NULL;
- }
-
- audio_process_options ("AUDIO", audio_options);
-
- s->nb_hw_voices_out = conf.fixed_out.nb_voices;
- s->nb_hw_voices_in = conf.fixed_in.nb_voices;
-
- if (s->nb_hw_voices_out <= 0) {
- dolog ("Bogus number of playback voices %d, setting to 1\n",
- s->nb_hw_voices_out);
- s->nb_hw_voices_out = 1;
- }
-
- if (s->nb_hw_voices_in <= 0) {
- dolog ("Bogus number of capture voices %d, setting to 0\n",
- s->nb_hw_voices_in);
- s->nb_hw_voices_in = 0;
- }
-
- if ( find_audio_driver (s, 0) == 0 &&
- find_audio_driver (s, 1) == 0 )
- {
- VMChangeStateEntry *e;
-
- if (conf.period.hz <= 0) {
- if (conf.period.hz < 0) {
- dolog ("warning: Timer period is negative - %d "
- "treating as zero\n",
- conf.period.hz);
- }
- conf.period.ticks = 1;
- }
- else {
- conf.period.ticks = ticks_per_sec / conf.period.hz;
- }
-
- e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
- if (!e) {
- dolog ("warning: Could not register change state handler\n"
- "(Audio can continue looping even after stopping the VM)\n");
- }
- }
- else {
- qemu_del_timer (s->ts);
- return NULL;
- }
-
- initialized = 1;
-
- LIST_INIT (&s->card_head);
- register_savevm ("audio", 0, 1, audio_save, audio_load, s);
- qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
- return s;
-}
-
-// this was added to work around a deadlock in SDL when quitting
-void AUD_cleanup()
-{
- audio_atexit();
-}
-
-CaptureVoiceOut *AUD_add_capture (
- AudioState *s,
- audsettings_t *as,
- struct audio_capture_ops *ops,
- void *cb_opaque
- )
-{
- CaptureVoiceOut *cap;
- struct capture_callback *cb;
-
- if (!s) {
- /* XXX suppress */
- s = &glob_audio_state;
- }
-
- if (audio_validate_settings (as)) {
- dolog ("Invalid settings were passed when trying to add capture\n");
- audio_print_settings (as);
- goto err0;
- }
-
- cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb));
- if (!cb) {
- dolog ("Could not allocate capture callback information, size %zu\n",
- sizeof (*cb));
- goto err0;
- }
- cb->ops = *ops;
- cb->opaque = cb_opaque;
-
- cap = audio_pcm_capture_find_specific (s, as);
- if (cap) {
- LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
- return cap;
- }
- else {
- HWVoiceOut *hw;
- CaptureVoiceOut *cap;
-
- cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap));
- if (!cap) {
- dolog ("Could not allocate capture voice, size %zu\n",
- sizeof (*cap));
- goto err1;
- }
-
- hw = &cap->hw;
- LIST_INIT (&hw->sw_head);
- LIST_INIT (&cap->cb_head);
-
- /* XXX find a more elegant way */
- hw->samples = 4096 * 4;
- hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples,
- sizeof (st_sample_t));
- if (!hw->mix_buf) {
- dolog ("Could not allocate capture mix buffer (%d samples)\n",
- hw->samples);
- goto err2;
- }
-
- audio_pcm_init_info (&hw->info, as);
-
- cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
- if (!cap->buf) {
- dolog ("Could not allocate capture buffer "
- "(%d samples, each %d bytes)\n",
- hw->samples, 1 << hw->info.shift);
- goto err3;
- }
-
- hw->clip = mixeng_clip
- [hw->info.nchannels == 2]
- [hw->info.sign]
- [hw->info.swap_endianness]
- [audio_bits_to_index (hw->info.bits)];
-
- LIST_INSERT_HEAD (&s->cap_head, cap, entries);
- LIST_INSERT_HEAD (&cap->cb_head, cb, entries);
-
- hw = NULL;
- while ((hw = audio_pcm_hw_find_any_out (s, hw))) {
- audio_attach_capture (s, hw);
- }
- return cap;
-
- err3:
- qemu_free (cap->hw.mix_buf);
- err2:
- qemu_free (cap);
- err1:
- qemu_free (cb);
- err0:
- return NULL;
- }
-}
-
-void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque)
-{
- struct capture_callback *cb;
-
- for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) {
- if (cb->opaque == cb_opaque) {
- cb->ops.destroy (cb_opaque);
- LIST_REMOVE (cb, entries);
- qemu_free (cb);
-
- if (!cap->cb_head.lh_first) {
- SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1;
-
- while (sw) {
- SWVoiceCap *sc = (SWVoiceCap *) sw;
-#ifdef DEBUG_CAPTURE
- dolog ("freeing %s\n", sw->name);
-#endif
-
- sw1 = sw->entries.le_next;
- if (sw->rate) {
- st_rate_stop (sw->rate);
- sw->rate = NULL;
- }
- LIST_REMOVE (sw, entries);
- LIST_REMOVE (sc, entries);
- qemu_free (sc);
- sw = sw1;
- }
- LIST_REMOVE (cap, entries);
- qemu_free (cap);
- }
- return;
- }
- }
-}
-
-void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol)
-{
- if (sw) {
- sw->vol.mute = mute;
- sw->vol.l = nominal_volume.l * lvol / 255;
- sw->vol.r = nominal_volume.r * rvol / 255;
- }
-}
-
-void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol)
-{
- if (sw) {
- sw->vol.mute = mute;
- sw->vol.l = nominal_volume.l * lvol / 255;
- sw->vol.r = nominal_volume.r * rvol / 255;
- }
-}
generated by cgit v1.1 at 2024-05-21 06:51:20 +0000