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![bellard](/assets/img/avatar_default.png)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1584 c046a42c-6fe2-441c-8c8c-71466251a162
1656 lines
41 KiB
C
1656 lines
41 KiB
C
/*
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* QEMU Audio subsystem
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*
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* Copyright (c) 2003-2005 Vassili Karpov (malc)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "vl.h"
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#define AUDIO_CAP "audio"
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#include "audio_int.h"
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static void audio_pcm_hw_fini_in (HWVoiceIn *hw);
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static void audio_pcm_hw_fini_out (HWVoiceOut *hw);
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static LIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in;
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static LIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out;
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/* #define DEBUG_PLIVE */
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/* #define DEBUG_LIVE */
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/* #define DEBUG_OUT */
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static struct audio_driver *drvtab[] = {
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#ifdef CONFIG_OSS
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&oss_audio_driver,
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#endif
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#ifdef CONFIG_ALSA
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&alsa_audio_driver,
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#endif
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#ifdef CONFIG_COREAUDIO
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&coreaudio_audio_driver,
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#endif
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#ifdef CONFIG_DSOUND
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&dsound_audio_driver,
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#endif
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#ifdef CONFIG_FMOD
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&fmod_audio_driver,
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#endif
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#ifdef CONFIG_SDL
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&sdl_audio_driver,
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#endif
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&no_audio_driver,
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&wav_audio_driver
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};
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AudioState audio_state = {
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/* Out */
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1, /* use fixed settings */
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44100, /* fixed frequency */
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2, /* fixed channels */
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AUD_FMT_S16, /* fixed format */
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1, /* number of hw voices */
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1, /* greedy */
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/* In */
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1, /* use fixed settings */
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44100, /* fixed frequency */
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2, /* fixed channels */
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AUD_FMT_S16, /* fixed format */
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1, /* number of hw voices */
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1, /* greedy */
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NULL, /* driver opaque */
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NULL, /* driver */
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NULL, /* timer handle */
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{ 0 }, /* period */
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0 /* plive */
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};
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volume_t nominal_volume = {
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0,
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#ifdef FLOAT_MIXENG
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1.0,
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1.0
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#else
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UINT_MAX,
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UINT_MAX
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#endif
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};
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/* http://www.df.lth.se/~john_e/gems/gem002d.html */
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/* http://www.multi-platforms.com/Tips/PopCount.htm */
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uint32_t popcount (uint32_t u)
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{
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u = ((u&0x55555555) + ((u>>1)&0x55555555));
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u = ((u&0x33333333) + ((u>>2)&0x33333333));
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u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
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u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
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u = ( u&0x0000ffff) + (u>>16);
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return u;
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}
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inline uint32_t lsbindex (uint32_t u)
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{
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return popcount ((u&-u)-1);
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}
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#ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED
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#error No its not
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#else
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int audio_bug (const char *funcname, int cond)
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{
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if (cond) {
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static int shown;
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AUD_log (NULL, "Error a bug that was just triggered in %s\n", funcname);
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if (!shown) {
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shown = 1;
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AUD_log (NULL, "Save all your work and restart without audio\n");
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AUD_log (NULL, "Please send bug report to malc@pulsesoft.com\n");
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AUD_log (NULL, "I am sorry\n");
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}
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AUD_log (NULL, "Context:\n");
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#if defined AUDIO_BREAKPOINT_ON_BUG
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# if defined HOST_I386
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# if defined __GNUC__
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__asm__ ("int3");
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# elif defined _MSC_VER
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_asm _emit 0xcc;
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# else
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abort ();
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# endif
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# else
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abort ();
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# endif
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#endif
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}
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return cond;
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}
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#endif
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static char *audio_alloc_prefix (const char *s)
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{
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const char qemu_prefix[] = "QEMU_";
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size_t len;
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char *r;
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if (!s) {
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return NULL;
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}
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len = strlen (s);
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r = qemu_malloc (len + sizeof (qemu_prefix));
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if (r) {
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size_t i;
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char *u = r + sizeof (qemu_prefix) - 1;
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strcpy (r, qemu_prefix);
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strcat (r, s);
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for (i = 0; i < len; ++i) {
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u[i] = toupper (u[i]);
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}
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}
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return r;
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}
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const char *audio_audfmt_to_string (audfmt_e fmt)
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{
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switch (fmt) {
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case AUD_FMT_U8:
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return "U8";
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case AUD_FMT_U16:
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return "U16";
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case AUD_FMT_S8:
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return "S8";
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case AUD_FMT_S16:
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return "S16";
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}
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dolog ("Bogus audfmt %d returning S16\n", fmt);
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return "S16";
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}
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audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval, int *defaultp)
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{
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if (!strcasecmp (s, "u8")) {
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*defaultp = 0;
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return AUD_FMT_U8;
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}
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else if (!strcasecmp (s, "u16")) {
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*defaultp = 0;
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return AUD_FMT_U16;
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}
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else if (!strcasecmp (s, "s8")) {
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*defaultp = 0;
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return AUD_FMT_S8;
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}
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else if (!strcasecmp (s, "s16")) {
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*defaultp = 0;
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return AUD_FMT_S16;
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}
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else {
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dolog ("Bogus audio format `%s' using %s\n",
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s, audio_audfmt_to_string (defval));
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*defaultp = 1;
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return defval;
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}
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}
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static audfmt_e audio_get_conf_fmt (const char *envname,
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audfmt_e defval,
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int *defaultp)
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{
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const char *var = getenv (envname);
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if (!var) {
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*defaultp = 1;
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return defval;
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}
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return audio_string_to_audfmt (var, defval, defaultp);
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}
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static int audio_get_conf_int (const char *key, int defval, int *defaultp)
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{
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int val;
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char *strval;
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strval = getenv (key);
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if (strval) {
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*defaultp = 0;
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val = atoi (strval);
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return val;
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}
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else {
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*defaultp = 1;
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return defval;
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}
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}
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static const char *audio_get_conf_str (const char *key,
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const char *defval,
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int *defaultp)
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{
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const char *val = getenv (key);
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if (!val) {
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*defaultp = 1;
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return defval;
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}
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else {
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*defaultp = 0;
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return val;
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}
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}
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void AUD_log (const char *cap, const char *fmt, ...)
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{
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va_list ap;
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if (cap) {
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fprintf (stderr, "%s: ", cap);
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}
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va_start (ap, fmt);
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vfprintf (stderr, fmt, ap);
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va_end (ap);
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}
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void AUD_vlog (const char *cap, const char *fmt, va_list ap)
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{
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if (cap) {
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fprintf (stderr, "%s: ", cap);
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}
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vfprintf (stderr, fmt, ap);
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}
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static void audio_print_options (const char *prefix,
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struct audio_option *opt)
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{
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char *uprefix;
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if (!prefix) {
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dolog ("No prefix specified\n");
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return;
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}
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if (!opt) {
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dolog ("No options\n");
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return;
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}
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uprefix = audio_alloc_prefix (prefix);
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for (; opt->name; opt++) {
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const char *state = "default";
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printf (" %s_%s: ", uprefix, opt->name);
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if (opt->overridenp && *opt->overridenp) {
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state = "current";
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}
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switch (opt->tag) {
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case AUD_OPT_BOOL:
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{
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int *intp = opt->valp;
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printf ("boolean, %s = %d\n", state, *intp ? 1 : 0);
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}
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break;
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case AUD_OPT_INT:
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{
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int *intp = opt->valp;
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printf ("integer, %s = %d\n", state, *intp);
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}
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break;
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case AUD_OPT_FMT:
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{
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audfmt_e *fmtp = opt->valp;
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printf (
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"format, %s = %s, (one of: U8 S8 U16 S16)\n",
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state,
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audio_audfmt_to_string (*fmtp)
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);
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}
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break;
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case AUD_OPT_STR:
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{
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const char **strp = opt->valp;
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printf ("string, %s = %s\n",
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state,
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*strp ? *strp : "(not set)");
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}
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break;
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default:
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printf ("???\n");
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dolog ("Bad value tag for option %s_%s %d\n",
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uprefix, opt->name, opt->tag);
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break;
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}
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printf (" %s\n", opt->descr);
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}
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qemu_free (uprefix);
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}
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static void audio_process_options (const char *prefix,
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struct audio_option *opt)
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{
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char *optname;
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const char qemu_prefix[] = "QEMU_";
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size_t preflen;
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if (audio_bug (AUDIO_FUNC, !prefix)) {
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dolog ("prefix = NULL\n");
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return;
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}
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if (audio_bug (AUDIO_FUNC, !opt)) {
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dolog ("opt = NULL\n");
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return;
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}
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preflen = strlen (prefix);
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for (; opt->name; opt++) {
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size_t len, i;
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int def;
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if (!opt->valp) {
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dolog ("Option value pointer for `%s' is not set\n",
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opt->name);
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continue;
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}
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len = strlen (opt->name);
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optname = qemu_malloc (len + preflen + sizeof (qemu_prefix) + 1);
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if (!optname) {
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dolog ("Can not allocate memory for option name `%s'\n",
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opt->name);
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continue;
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}
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strcpy (optname, qemu_prefix);
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for (i = 0; i <= preflen; ++i) {
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optname[i + sizeof (qemu_prefix) - 1] = toupper (prefix[i]);
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}
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strcat (optname, "_");
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strcat (optname, opt->name);
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def = 1;
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switch (opt->tag) {
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case AUD_OPT_BOOL:
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case AUD_OPT_INT:
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{
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int *intp = opt->valp;
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*intp = audio_get_conf_int (optname, *intp, &def);
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}
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break;
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case AUD_OPT_FMT:
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{
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audfmt_e *fmtp = opt->valp;
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*fmtp = audio_get_conf_fmt (optname, *fmtp, &def);
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}
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break;
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case AUD_OPT_STR:
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{
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const char **strp = opt->valp;
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*strp = audio_get_conf_str (optname, *strp, &def);
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}
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break;
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default:
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dolog ("Bad value tag for option `%s' - %d\n",
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optname, opt->tag);
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break;
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}
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if (!opt->overridenp) {
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opt->overridenp = &opt->overriden;
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}
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*opt->overridenp = !def;
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qemu_free (optname);
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}
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}
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static int audio_pcm_info_eq (struct audio_pcm_info *info, int freq,
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int nchannels, audfmt_e fmt)
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{
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int bits = 8, sign = 0;
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switch (fmt) {
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case AUD_FMT_S8:
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sign = 1;
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case AUD_FMT_U8:
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break;
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case AUD_FMT_S16:
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sign = 1;
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case AUD_FMT_U16:
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bits = 16;
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break;
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}
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return info->freq == freq
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&& info->nchannels == nchannels
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&& info->sign == sign
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&& info->bits == bits;
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}
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void audio_pcm_init_info (struct audio_pcm_info *info, int freq,
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int nchannels, audfmt_e fmt, int swap_endian)
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{
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int bits = 8, sign = 0;
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switch (fmt) {
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case AUD_FMT_S8:
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sign = 1;
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case AUD_FMT_U8:
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break;
|
|
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case AUD_FMT_S16:
|
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sign = 1;
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case AUD_FMT_U16:
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bits = 16;
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break;
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}
|
|
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info->freq = freq;
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info->bits = bits;
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info->sign = sign;
|
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info->nchannels = nchannels;
|
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info->shift = (nchannels == 2) + (bits == 16);
|
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info->align = (1 << info->shift) - 1;
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info->bytes_per_second = info->freq << info->shift;
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info->swap_endian = swap_endian;
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}
|
|
|
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void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len)
|
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{
|
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if (!len) {
|
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return;
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}
|
|
|
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if (info->sign) {
|
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memset (buf, len << info->shift, 0x00);
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}
|
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else {
|
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if (info->bits == 8) {
|
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memset (buf, len << info->shift, 0x80);
|
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}
|
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else {
|
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int i;
|
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uint16_t *p = buf;
|
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int shift = info->nchannels - 1;
|
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short s = INT16_MAX;
|
|
|
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if (info->swap_endian) {
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s = bswap16 (s);
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}
|
|
|
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for (i = 0; i < len << shift; i++) {
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p[i] = s;
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}
|
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}
|
|
}
|
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}
|
|
|
|
/*
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* Hard voice (capture)
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*/
|
|
static void audio_pcm_hw_free_resources_in (HWVoiceIn *hw)
|
|
{
|
|
if (hw->conv_buf) {
|
|
qemu_free (hw->conv_buf);
|
|
}
|
|
hw->conv_buf = NULL;
|
|
}
|
|
|
|
static int audio_pcm_hw_alloc_resources_in (HWVoiceIn *hw)
|
|
{
|
|
hw->conv_buf = qemu_mallocz (hw->samples * sizeof (st_sample_t));
|
|
if (!hw->conv_buf) {
|
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return -1;
|
|
}
|
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return 0;
|
|
}
|
|
|
|
static int audio_pcm_hw_init_in (HWVoiceIn *hw, int freq, int nchannels, audfmt_e fmt)
|
|
{
|
|
audio_pcm_hw_fini_in (hw);
|
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|
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if (hw->pcm_ops->init_in (hw, freq, nchannels, fmt)) {
|
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memset (hw, 0, audio_state.drv->voice_size_in);
|
|
return -1;
|
|
}
|
|
LIST_INIT (&hw->sw_head);
|
|
hw->active = 1;
|
|
hw->samples = hw->bufsize >> hw->info.shift;
|
|
hw->conv =
|
|
mixeng_conv
|
|
[nchannels == 2]
|
|
[hw->info.sign]
|
|
[hw->info.swap_endian]
|
|
[hw->info.bits == 16];
|
|
if (audio_pcm_hw_alloc_resources_in (hw)) {
|
|
audio_pcm_hw_free_resources_in (hw);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static uint64_t 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 void audio_pcm_sw_free_resources_in (SWVoiceIn *sw)
|
|
{
|
|
if (sw->conv_buf) {
|
|
qemu_free (sw->conv_buf);
|
|
}
|
|
|
|
if (sw->rate) {
|
|
st_rate_stop (sw->rate);
|
|
}
|
|
|
|
sw->conv_buf = NULL;
|
|
sw->rate = NULL;
|
|
}
|
|
|
|
static int audio_pcm_sw_alloc_resources_in (SWVoiceIn *sw)
|
|
{
|
|
int samples = ((int64_t) sw->hw->samples << 32) / sw->ratio;
|
|
sw->conv_buf = qemu_mallocz (samples * sizeof (st_sample_t));
|
|
if (!sw->conv_buf) {
|
|
return -1;
|
|
}
|
|
|
|
sw->rate = st_rate_start (sw->hw->info.freq, sw->info.freq);
|
|
if (!sw->rate) {
|
|
qemu_free (sw->conv_buf);
|
|
sw->conv_buf = NULL;
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int audio_pcm_sw_init_in (SWVoiceIn *sw, HWVoiceIn *hw, const char *name,
|
|
int freq, int nchannels, audfmt_e fmt)
|
|
{
|
|
audio_pcm_init_info (&sw->info, freq, nchannels, fmt,
|
|
/* None of the cards emulated by QEMU are big-endian
|
|
hence following shortcut */
|
|
audio_need_to_swap_endian (0));
|
|
sw->hw = hw;
|
|
sw->ratio = ((int64_t) sw->info.freq << 32) / sw->hw->info.freq;
|
|
|
|
sw->clip =
|
|
mixeng_clip
|
|
[nchannels == 2]
|
|
[sw->info.sign]
|
|
[sw->info.swap_endian]
|
|
[sw->info.bits == 16];
|
|
|
|
sw->name = qemu_strdup (name);
|
|
audio_pcm_sw_free_resources_in (sw);
|
|
return audio_pcm_sw_alloc_resources_in (sw);
|
|
}
|
|
|
|
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->conv_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);
|
|
}
|
|
|
|
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->conv_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;
|
|
}
|
|
|
|
static void audio_pcm_hw_free_resources_out (HWVoiceOut *hw)
|
|
{
|
|
if (hw->mix_buf) {
|
|
qemu_free (hw->mix_buf);
|
|
}
|
|
|
|
hw->mix_buf = NULL;
|
|
}
|
|
|
|
static int audio_pcm_hw_alloc_resources_out (HWVoiceOut *hw)
|
|
{
|
|
hw->mix_buf = qemu_mallocz (hw->samples * sizeof (st_sample_t));
|
|
if (!hw->mix_buf) {
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int audio_pcm_hw_init_out (HWVoiceOut *hw, int freq,
|
|
int nchannels, audfmt_e fmt)
|
|
{
|
|
audio_pcm_hw_fini_out (hw);
|
|
if (hw->pcm_ops->init_out (hw, freq, nchannels, fmt)) {
|
|
memset (hw, 0, audio_state.drv->voice_size_out);
|
|
return -1;
|
|
}
|
|
|
|
LIST_INIT (&hw->sw_head);
|
|
hw->active = 1;
|
|
hw->samples = hw->bufsize >> hw->info.shift;
|
|
hw->clip =
|
|
mixeng_clip
|
|
[nchannels == 2]
|
|
[hw->info.sign]
|
|
[hw->info.swap_endian]
|
|
[hw->info.bits == 16];
|
|
if (audio_pcm_hw_alloc_resources_out (hw)) {
|
|
audio_pcm_hw_fini_out (hw);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
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)
|
|
*/
|
|
static void audio_pcm_sw_free_resources_out (SWVoiceOut *sw)
|
|
{
|
|
if (sw->buf) {
|
|
qemu_free (sw->buf);
|
|
}
|
|
|
|
if (sw->rate) {
|
|
st_rate_stop (sw->rate);
|
|
}
|
|
|
|
sw->buf = NULL;
|
|
sw->rate = NULL;
|
|
}
|
|
|
|
static int audio_pcm_sw_alloc_resources_out (SWVoiceOut *sw)
|
|
{
|
|
sw->buf = qemu_mallocz (sw->hw->samples * sizeof (st_sample_t));
|
|
if (!sw->buf) {
|
|
return -1;
|
|
}
|
|
|
|
sw->rate = st_rate_start (sw->info.freq, sw->hw->info.freq);
|
|
if (!sw->rate) {
|
|
qemu_free (sw->buf);
|
|
sw->buf = NULL;
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int audio_pcm_sw_init_out (SWVoiceOut *sw, HWVoiceOut *hw,
|
|
const char *name, int freq,
|
|
int nchannels, audfmt_e fmt)
|
|
{
|
|
audio_pcm_init_info (&sw->info, freq, nchannels, fmt,
|
|
/* None of the cards emulated by QEMU are big-endian
|
|
hence following shortcut */
|
|
audio_need_to_swap_endian (0));
|
|
sw->hw = hw;
|
|
sw->empty = 1;
|
|
sw->active = 0;
|
|
sw->ratio = ((int64_t) sw->hw->info.freq << 32) / sw->info.freq;
|
|
sw->total_hw_samples_mixed = 0;
|
|
|
|
sw->conv =
|
|
mixeng_conv
|
|
[nchannels == 2]
|
|
[sw->info.sign]
|
|
[sw->info.swap_endian]
|
|
[sw->info.bits == 16];
|
|
sw->name = qemu_strdup (name);
|
|
|
|
audio_pcm_sw_free_resources_out (sw);
|
|
return audio_pcm_sw_alloc_resources_out (sw);
|
|
}
|
|
|
|
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) {
|
|
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, hw %d\n",
|
|
sw->name,
|
|
size >> sw->info.shift,
|
|
ret,
|
|
sw->total_hw_samples_mixed,
|
|
sw->hw->total_samples_played
|
|
);
|
|
#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);
|
|
return 0;
|
|
}
|
|
|
|
bytes = sw->hw->pcm_ops->write (sw, buf, size);
|
|
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);
|
|
return 0;
|
|
}
|
|
|
|
bytes = sw->hw->pcm_ops->read (sw, buf, size);
|
|
return bytes;
|
|
}
|
|
|
|
int AUD_get_buffer_size_out (SWVoiceOut *sw)
|
|
{
|
|
return sw->hw->bufsize;
|
|
}
|
|
|
|
void AUD_set_active_out (SWVoiceOut *sw, int on)
|
|
{
|
|
HWVoiceOut *hw;
|
|
|
|
if (!sw) {
|
|
return;
|
|
}
|
|
|
|
hw = sw->hw;
|
|
if (sw->active != on) {
|
|
SWVoiceOut *temp_sw;
|
|
|
|
if (on) {
|
|
int total;
|
|
|
|
hw->pending_disable = 0;
|
|
if (!hw->enabled) {
|
|
hw->enabled = 1;
|
|
hw->pcm_ops->ctl_out (hw, VOICE_ENABLE);
|
|
}
|
|
|
|
if (sw->empty) {
|
|
total = 0;
|
|
}
|
|
}
|
|
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;
|
|
}
|
|
}
|
|
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;
|
|
hw->pcm_ops->ctl_in (hw, VOICE_ENABLE);
|
|
}
|
|
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;
|
|
hw->pcm_ops->ctl_in (hw, VOICE_DISABLE);
|
|
}
|
|
}
|
|
}
|
|
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 %lld\n",
|
|
sw->name,
|
|
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);
|
|
}
|
|
|
|
dead = sw->hw->samples - live;
|
|
|
|
#ifdef DEBUG_OUT
|
|
dolog ("%s: get_free live %d dead %d ret %lld\n",
|
|
sw->name,
|
|
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_run_out (void)
|
|
{
|
|
HWVoiceOut *hw = NULL;
|
|
SWVoiceOut *sw;
|
|
|
|
while ((hw = audio_pcm_hw_find_any_active_enabled_out (hw))) {
|
|
int played;
|
|
int live, free, nb_live;
|
|
|
|
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);
|
|
}
|
|
|
|
if (hw->pending_disable && !nb_live) {
|
|
#ifdef DEBUG_OUT
|
|
dolog ("Disabling voice\n");
|
|
#endif
|
|
hw->enabled = 0;
|
|
hw->pending_disable = 0;
|
|
hw->pcm_ops->ctl_out (hw, VOICE_DISABLE);
|
|
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;
|
|
}
|
|
|
|
played = hw->pcm_ops->run_out (hw);
|
|
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 total %d\n", played, hw->total_samples_played);
|
|
#endif
|
|
|
|
if (played) {
|
|
hw->ts_helper += played;
|
|
}
|
|
|
|
for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
|
|
again:
|
|
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;
|
|
|
|
if (!sw->active && !sw->callback.fn) {
|
|
SWVoiceOut *temp = sw->entries.le_next;
|
|
|
|
#ifdef DEBUG_PLIVE
|
|
dolog ("Finishing with old voice\n");
|
|
#endif
|
|
AUD_close_out (sw);
|
|
sw = temp;
|
|
if (sw) {
|
|
goto again;
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (sw->active) {
|
|
free = audio_get_free (sw);
|
|
if (free > 0) {
|
|
sw->callback.fn (sw->callback.opaque, free);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void audio_run_in (void)
|
|
{
|
|
HWVoiceIn *hw = NULL;
|
|
|
|
while ((hw = audio_pcm_hw_find_any_active_enabled_in (hw))) {
|
|
SWVoiceIn *sw;
|
|
int captured, min;
|
|
|
|
captured = hw->pcm_ops->run_in (hw);
|
|
|
|
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 struct audio_option audio_options[] = {
|
|
/* DAC */
|
|
{"DAC_FIXED_SETTINGS", AUD_OPT_BOOL, &audio_state.fixed_settings_out,
|
|
"Use fixed settings for host DAC", NULL, 0},
|
|
|
|
{"DAC_FIXED_FREQ", AUD_OPT_INT, &audio_state.fixed_freq_out,
|
|
"Frequency for fixed host DAC", NULL, 0},
|
|
|
|
{"DAC_FIXED_FMT", AUD_OPT_FMT, &audio_state.fixed_fmt_out,
|
|
"Format for fixed host DAC", NULL, 0},
|
|
|
|
{"DAC_FIXED_CHANNELS", AUD_OPT_INT, &audio_state.fixed_channels_out,
|
|
"Number of channels for fixed DAC (1 - mono, 2 - stereo)", NULL, 0},
|
|
|
|
{"DAC_VOICES", AUD_OPT_INT, &audio_state.nb_hw_voices_out,
|
|
"Number of voices for DAC", NULL, 0},
|
|
|
|
/* ADC */
|
|
{"ADC_FIXED_SETTINGS", AUD_OPT_BOOL, &audio_state.fixed_settings_out,
|
|
"Use fixed settings for host ADC", NULL, 0},
|
|
|
|
{"ADC_FIXED_FREQ", AUD_OPT_INT, &audio_state.fixed_freq_out,
|
|
"Frequency for fixed ADC", NULL, 0},
|
|
|
|
{"ADC_FIXED_FMT", AUD_OPT_FMT, &audio_state.fixed_fmt_out,
|
|
"Format for fixed ADC", NULL, 0},
|
|
|
|
{"ADC_FIXED_CHANNELS", AUD_OPT_INT, &audio_state.fixed_channels_in,
|
|
"Number of channels for fixed ADC (1 - mono, 2 - stereo)", NULL, 0},
|
|
|
|
{"ADC_VOICES", AUD_OPT_INT, &audio_state.nb_hw_voices_out,
|
|
"Number of voices for ADC", NULL, 0},
|
|
|
|
/* Misc */
|
|
{"TIMER_PERIOD", AUD_OPT_INT, &audio_state.period.usec,
|
|
"Timer period in microseconds (0 - try lowest possible)", NULL, 0},
|
|
|
|
{"PLIVE", AUD_OPT_BOOL, &audio_state.plive,
|
|
"(undocumented)", NULL, 0},
|
|
|
|
{NULL, 0, NULL, NULL, NULL, 0}
|
|
};
|
|
|
|
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);
|
|
|
|
switch (d->max_voices_out) {
|
|
case 0:
|
|
printf ("Does not support DAC\n");
|
|
break;
|
|
case 1:
|
|
printf ("One DAC voice\n");
|
|
break;
|
|
case INT_MAX:
|
|
printf ("Theoretically supports many DAC voices\n");
|
|
break;
|
|
default:
|
|
printf ("Theoretically supports upto %d DAC voices\n",
|
|
d->max_voices_out);
|
|
break;
|
|
}
|
|
|
|
switch (d->max_voices_in) {
|
|
case 0:
|
|
printf ("Does not support ADC\n");
|
|
break;
|
|
case 1:
|
|
printf ("One ADC voice\n");
|
|
break;
|
|
case INT_MAX:
|
|
printf ("Theoretically supports many ADC voices\n");
|
|
break;
|
|
default:
|
|
printf ("Theoretically supports upto %d ADC voices\n",
|
|
d->max_voices_in);
|
|
break;
|
|
}
|
|
|
|
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"
|
|
);
|
|
}
|
|
|
|
void audio_timer (void *opaque)
|
|
{
|
|
AudioState *s = opaque;
|
|
|
|
audio_run_out ();
|
|
audio_run_in ();
|
|
|
|
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + s->period.ticks);
|
|
}
|
|
|
|
static int audio_driver_init (struct audio_driver *drv)
|
|
{
|
|
if (drv->options) {
|
|
audio_process_options (drv->name, drv->options);
|
|
}
|
|
audio_state.opaque = drv->init ();
|
|
|
|
if (audio_state.opaque) {
|
|
int i;
|
|
HWVoiceOut *hwo;
|
|
HWVoiceIn *hwi;
|
|
|
|
if (audio_state.nb_hw_voices_out > drv->max_voices_out) {
|
|
if (!drv->max_voices_out) {
|
|
dolog ("`%s' does not support DAC\n", drv->name);
|
|
}
|
|
else {
|
|
dolog (
|
|
"`%s' does not support %d multiple DAC voicess\n"
|
|
"Resetting to %d\n",
|
|
drv->name,
|
|
audio_state.nb_hw_voices_out,
|
|
drv->max_voices_out
|
|
);
|
|
}
|
|
audio_state.nb_hw_voices_out = drv->max_voices_out;
|
|
}
|
|
|
|
LIST_INIT (&hw_head_out);
|
|
hwo = qemu_mallocz (audio_state.nb_hw_voices_out * drv->voice_size_out);
|
|
if (!hwo) {
|
|
dolog (
|
|
"Not enough memory for %d `%s' DAC voices (each %d bytes)\n",
|
|
audio_state.nb_hw_voices_out,
|
|
drv->name,
|
|
drv->voice_size_out
|
|
);
|
|
drv->fini (audio_state.opaque);
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; i < audio_state.nb_hw_voices_out; ++i) {
|
|
LIST_INSERT_HEAD (&hw_head_out, hwo, entries);
|
|
hwo = advance (hwo, drv->voice_size_out);
|
|
}
|
|
|
|
if (!drv->voice_size_in && drv->max_voices_in) {
|
|
ldebug ("warning: No ADC voice size defined for `%s'\n",
|
|
drv->name);
|
|
drv->max_voices_in = 0;
|
|
}
|
|
|
|
if (!drv->voice_size_out && drv->max_voices_out) {
|
|
ldebug ("warning: No DAC voice size defined for `%s'\n",
|
|
drv->name);
|
|
}
|
|
|
|
if (drv->voice_size_in && !drv->max_voices_in) {
|
|
ldebug ("warning: ADC voice size is %d for ADC less driver `%s'\n",
|
|
drv->voice_size_out, drv->name);
|
|
}
|
|
|
|
if (drv->voice_size_out && !drv->max_voices_out) {
|
|
ldebug ("warning: DAC voice size is %d for DAC less driver `%s'\n",
|
|
drv->voice_size_in, drv->name);
|
|
}
|
|
|
|
if (audio_state.nb_hw_voices_in > drv->max_voices_in) {
|
|
if (!drv->max_voices_in) {
|
|
ldebug ("`%s' does not support ADC\n", drv->name);
|
|
}
|
|
else {
|
|
dolog (
|
|
"`%s' does not support %d multiple ADC voices\n"
|
|
"Resetting to %d\n",
|
|
drv->name,
|
|
audio_state.nb_hw_voices_in,
|
|
drv->max_voices_in
|
|
);
|
|
}
|
|
audio_state.nb_hw_voices_in = drv->max_voices_in;
|
|
}
|
|
|
|
LIST_INIT (&hw_head_in);
|
|
hwi = qemu_mallocz (audio_state.nb_hw_voices_in * drv->voice_size_in);
|
|
if (!hwi) {
|
|
dolog (
|
|
"Not enough memory for %d `%s' ADC voices (each %d bytes)\n",
|
|
audio_state.nb_hw_voices_in,
|
|
drv->name,
|
|
drv->voice_size_in
|
|
);
|
|
qemu_free (hwo);
|
|
drv->fini (audio_state.opaque);
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; i < audio_state.nb_hw_voices_in; ++i) {
|
|
LIST_INSERT_HEAD (&hw_head_in, hwi, entries);
|
|
hwi = advance (hwi, drv->voice_size_in);
|
|
}
|
|
|
|
audio_state.drv = drv;
|
|
return 0;
|
|
}
|
|
else {
|
|
dolog ("Could not init `%s' audio driver\n", drv->name);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static void audio_vm_stop_handler (void *opaque, int reason)
|
|
{
|
|
HWVoiceOut *hwo = NULL;
|
|
HWVoiceIn *hwi = NULL;
|
|
int op = reason ? VOICE_ENABLE : VOICE_DISABLE;
|
|
|
|
(void) opaque;
|
|
while ((hwo = audio_pcm_hw_find_any_out (hwo))) {
|
|
if (!hwo->pcm_ops) {
|
|
continue;
|
|
}
|
|
|
|
if (hwo->enabled != reason) {
|
|
hwo->pcm_ops->ctl_out (hwo, op);
|
|
}
|
|
}
|
|
|
|
while ((hwi = audio_pcm_hw_find_any_in (hwi))) {
|
|
if (!hwi->pcm_ops) {
|
|
continue;
|
|
}
|
|
|
|
if (hwi->enabled != reason) {
|
|
hwi->pcm_ops->ctl_in (hwi, op);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void audio_atexit (void)
|
|
{
|
|
HWVoiceOut *hwo = NULL;
|
|
HWVoiceIn *hwi = NULL;
|
|
|
|
while ((hwo = audio_pcm_hw_find_any_out (hwo))) {
|
|
if (!hwo->pcm_ops) {
|
|
continue;
|
|
}
|
|
|
|
if (hwo->enabled) {
|
|
hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE);
|
|
}
|
|
hwo->pcm_ops->fini_out (hwo);
|
|
}
|
|
|
|
while ((hwi = audio_pcm_hw_find_any_in (hwi))) {
|
|
if (!hwi->pcm_ops) {
|
|
continue;
|
|
}
|
|
|
|
if (hwi->enabled) {
|
|
hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE);
|
|
}
|
|
hwi->pcm_ops->fini_in (hwi);
|
|
}
|
|
audio_state.drv->fini (audio_state.opaque);
|
|
}
|
|
|
|
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_init (void)
|
|
{
|
|
size_t i;
|
|
int done = 0;
|
|
const char *drvname;
|
|
AudioState *s = &audio_state;
|
|
|
|
audio_process_options ("AUDIO", audio_options);
|
|
|
|
if (s->nb_hw_voices_out <= 0) {
|
|
dolog ("Bogus number of DAC voices %d\n",
|
|
s->nb_hw_voices_out);
|
|
s->nb_hw_voices_out = 1;
|
|
}
|
|
|
|
if (s->nb_hw_voices_in <= 0) {
|
|
dolog ("Bogus number of ADC voices %d\n",
|
|
s->nb_hw_voices_in);
|
|
s->nb_hw_voices_in = 1;
|
|
}
|
|
|
|
{
|
|
int def;
|
|
drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def);
|
|
}
|
|
|
|
s->ts = qemu_new_timer (vm_clock, audio_timer, s);
|
|
if (!s->ts) {
|
|
dolog ("Can not create audio timer\n");
|
|
return;
|
|
}
|
|
|
|
if (drvname) {
|
|
int found = 0;
|
|
|
|
for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) {
|
|
if (!strcmp (drvname, drvtab[i]->name)) {
|
|
done = !audio_driver_init (drvtab[i]);
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
dolog ("Unknown audio driver `%s'\n", drvname);
|
|
dolog ("Run with -audio-help to list available drivers\n");
|
|
}
|
|
}
|
|
|
|
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 = !audio_driver_init (drvtab[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
register_savevm ("audio", 0, 1, audio_save, audio_load, NULL);
|
|
if (!done) {
|
|
if (audio_driver_init (&no_audio_driver)) {
|
|
dolog ("Can not initialize audio subsystem\n");
|
|
}
|
|
else {
|
|
dolog ("warning: using timer based audio emulation\n");
|
|
}
|
|
}
|
|
|
|
if (s->period.usec <= 0) {
|
|
if (s->period.usec < 0) {
|
|
dolog ("warning: timer period is negative - %d treating as zero\n",
|
|
s->period.usec);
|
|
}
|
|
s->period.ticks = 1;
|
|
}
|
|
else {
|
|
s->period.ticks = (ticks_per_sec * s->period.usec) / 1000000;
|
|
}
|
|
|
|
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + s->period.ticks);
|
|
}
|