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/*
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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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|
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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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|
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#define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown" |
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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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|
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struct fixed_settings {
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int enabled;
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int nb_voices;
|
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int greedy;
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audsettings_t settings; |
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}; |
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|
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static struct { |
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struct fixed_settings fixed_out;
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struct fixed_settings fixed_in;
|
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union {
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int hz;
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int64_t ticks; |
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} period; |
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int plive;
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int log_to_monitor;
|
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} conf = {
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{ /* DAC fixed settings */
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1, /* enabled */ |
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1, /* nb_voices */ |
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1, /* greedy */ |
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{
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44100, /* freq */ |
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2, /* nchannels */ |
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AUD_FMT_S16 /* fmt */
|
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} |
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}, |
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|
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{ /* ADC fixed settings */
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1, /* enabled */ |
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1, /* nb_voices */ |
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1, /* greedy */ |
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{
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44100, /* freq */ |
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2, /* nchannels */ |
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AUD_FMT_S16 /* fmt */
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} |
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}, |
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|
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{ 0 }, /* period */
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0, /* plive */ |
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0 /* log_to_monitor */ |
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}; |
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|
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static AudioState glob_audio_state;
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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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|
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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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|
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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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|
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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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|
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void *audio_calloc (const char *funcname, int nmemb, size_t size) |
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{
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int cond;
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size_t len; |
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len = nmemb * size; |
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cond = !nmemb || !size; |
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cond |= nmemb < 0;
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cond |= len < size; |
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|
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if (audio_bug ("audio_calloc", cond)) { |
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AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n", |
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funcname); |
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AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n", nmemb, size, len); |
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return NULL; |
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} |
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|
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return qemu_mallocz (len);
|
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} |
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|
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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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|
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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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|
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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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|
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strcpy (r, qemu_prefix); |
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strcat (r, s); |
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|
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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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|
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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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|
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case AUD_FMT_U16:
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return "U16"; |
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|
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case AUD_FMT_S8:
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return "S8"; |
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|
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case AUD_FMT_S16:
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return "S16"; |
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} |
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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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|
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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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|
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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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|
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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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|
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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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|
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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); |
| 295 |
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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|
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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 (conf.log_to_monitor) {
|
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if (cap) {
|
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term_printf ("%s: ", cap);
|
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} |
| 311 |
|
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term_vprintf (fmt, ap); |
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} |
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else {
|
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if (cap) {
|
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fprintf (stderr, "%s: ", cap);
|
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} |
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|
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vfprintf (stderr, fmt, ap); |
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} |
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} |
| 322 |
|
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void AUD_log (const char *cap, const char *fmt, ...) |
| 324 |
{
|
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va_list ap; |
| 326 |
|
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va_start (ap, fmt); |
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AUD_vlog (cap, fmt, ap); |
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va_end (ap); |
| 330 |
} |
| 331 |
|
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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;
|
| 336 |
|
| 337 |
if (!prefix) {
|
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dolog ("No prefix specified\n");
|
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return;
|
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} |
| 341 |
|
| 342 |
if (!opt) {
|
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dolog ("No options\n");
|
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return;
|
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} |
| 346 |
|
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uprefix = audio_alloc_prefix (prefix); |
| 348 |
|
| 349 |
for (; opt->name; opt++) {
|
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const char *state = "default"; |
| 351 |
printf (" %s_%s: ", uprefix, opt->name);
|
| 352 |
|
| 353 |
if (opt->overridenp && *opt->overridenp) {
|
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state = "current";
|
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} |
| 356 |
|
| 357 |
switch (opt->tag) {
|
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case AUD_OPT_BOOL:
|
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{
|
| 360 |
int *intp = opt->valp;
|
| 361 |
printf ("boolean, %s = %d\n", state, *intp ? 1 : 0); |
| 362 |
} |
| 363 |
break;
|
| 364 |
|
| 365 |
case AUD_OPT_INT:
|
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{
|
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int *intp = opt->valp;
|
| 368 |
printf ("integer, %s = %d\n", state, *intp);
|
| 369 |
} |
| 370 |
break;
|
| 371 |
|
| 372 |
case AUD_OPT_FMT:
|
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{
|
| 374 |
audfmt_e *fmtp = opt->valp; |
| 375 |
printf ( |
| 376 |
"format, %s = %s, (one of: U8 S8 U16 S16)\n",
|
| 377 |
state, |
| 378 |
audio_audfmt_to_string (*fmtp) |
| 379 |
); |
| 380 |
} |
| 381 |
break;
|
| 382 |
|
| 383 |
case AUD_OPT_STR:
|
| 384 |
{
|
| 385 |
const char **strp = opt->valp; |
| 386 |
printf ("string, %s = %s\n",
|
| 387 |
state, |
| 388 |
*strp ? *strp : "(not set)");
|
| 389 |
} |
| 390 |
break;
|
| 391 |
|
| 392 |
default:
|
| 393 |
printf ("???\n");
|
| 394 |
dolog ("Bad value tag for option %s_%s %d\n",
|
| 395 |
uprefix, opt->name, opt->tag); |
| 396 |
break;
|
| 397 |
} |
| 398 |
printf (" %s\n", opt->descr);
|
| 399 |
} |
| 400 |
|
| 401 |
qemu_free (uprefix); |
| 402 |
} |
| 403 |
|
| 404 |
static void audio_process_options (const char *prefix, |
| 405 |
struct audio_option *opt)
|
| 406 |
{
|
| 407 |
char *optname;
|
| 408 |
const char qemu_prefix[] = "QEMU_"; |
| 409 |
size_t preflen; |
| 410 |
|
| 411 |
if (audio_bug (AUDIO_FUNC, !prefix)) {
|
| 412 |
dolog ("prefix = NULL\n");
|
| 413 |
return;
|
| 414 |
} |
| 415 |
|
| 416 |
if (audio_bug (AUDIO_FUNC, !opt)) {
|
| 417 |
dolog ("opt = NULL\n");
|
| 418 |
return;
|
| 419 |
} |
| 420 |
|
| 421 |
preflen = strlen (prefix); |
| 422 |
|
| 423 |
for (; opt->name; opt++) {
|
| 424 |
size_t len, i; |
| 425 |
int def;
|
| 426 |
|
| 427 |
if (!opt->valp) {
|
| 428 |
dolog ("Option value pointer for `%s' is not set\n",
|
| 429 |
opt->name); |
| 430 |
continue;
|
| 431 |
} |
| 432 |
|
| 433 |
len = strlen (opt->name); |
| 434 |
/* len of opt->name + len of prefix + size of qemu_prefix
|
| 435 |
* (includes trailing zero) + zero + underscore (on behalf of
|
| 436 |
* sizeof) */
|
| 437 |
optname = qemu_malloc (len + preflen + sizeof (qemu_prefix) + 1); |
| 438 |
if (!optname) {
|
| 439 |
dolog ("Could not allocate memory for option name `%s'\n",
|
| 440 |
opt->name); |
| 441 |
continue;
|
| 442 |
} |
| 443 |
|
| 444 |
strcpy (optname, qemu_prefix); |
| 445 |
|
| 446 |
/* copy while upper-casing, including trailing zero */
|
| 447 |
for (i = 0; i <= preflen; ++i) { |
| 448 |
optname[i + sizeof (qemu_prefix) - 1] = toupper (prefix[i]); |
| 449 |
} |
| 450 |
strcat (optname, "_");
|
| 451 |
strcat (optname, opt->name); |
| 452 |
|
| 453 |
def = 1;
|
| 454 |
switch (opt->tag) {
|
| 455 |
case AUD_OPT_BOOL:
|
| 456 |
case AUD_OPT_INT:
|
| 457 |
{
|
| 458 |
int *intp = opt->valp;
|
| 459 |
*intp = audio_get_conf_int (optname, *intp, &def); |
| 460 |
} |
| 461 |
break;
|
| 462 |
|
| 463 |
case AUD_OPT_FMT:
|
| 464 |
{
|
| 465 |
audfmt_e *fmtp = opt->valp; |
| 466 |
*fmtp = audio_get_conf_fmt (optname, *fmtp, &def); |
| 467 |
} |
| 468 |
break;
|
| 469 |
|
| 470 |
case AUD_OPT_STR:
|
| 471 |
{
|
| 472 |
const char **strp = opt->valp; |
| 473 |
*strp = audio_get_conf_str (optname, *strp, &def); |
| 474 |
} |
| 475 |
break;
|
| 476 |
|
| 477 |
default:
|
| 478 |
dolog ("Bad value tag for option `%s' - %d\n",
|
| 479 |
optname, opt->tag); |
| 480 |
break;
|
| 481 |
} |
| 482 |
|
| 483 |
if (!opt->overridenp) {
|
| 484 |
opt->overridenp = &opt->overriden; |
| 485 |
} |
| 486 |
*opt->overridenp = !def; |
| 487 |
qemu_free (optname); |
| 488 |
} |
| 489 |
} |
| 490 |
|
| 491 |
static void audio_print_settings (audsettings_t *as) |
| 492 |
{
|
| 493 |
dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels);
|
| 494 |
|
| 495 |
switch (as->fmt) {
|
| 496 |
case AUD_FMT_S8:
|
| 497 |
AUD_log (NULL, "S8"); |
| 498 |
break;
|
| 499 |
case AUD_FMT_U8:
|
| 500 |
AUD_log (NULL, "U8"); |
| 501 |
break;
|
| 502 |
case AUD_FMT_S16:
|
| 503 |
AUD_log (NULL, "S16"); |
| 504 |
break;
|
| 505 |
case AUD_FMT_U16:
|
| 506 |
AUD_log (NULL, "U16"); |
| 507 |
break;
|
| 508 |
default:
|
| 509 |
AUD_log (NULL, "invalid(%d)", as->fmt); |
| 510 |
break;
|
| 511 |
} |
| 512 |
AUD_log (NULL, "\n"); |
| 513 |
} |
| 514 |
|
| 515 |
static int audio_validate_settigs (audsettings_t *as) |
| 516 |
{
|
| 517 |
int invalid;
|
| 518 |
|
| 519 |
invalid = as->nchannels != 1 && as->nchannels != 2; |
| 520 |
|
| 521 |
switch (as->fmt) {
|
| 522 |
case AUD_FMT_S8:
|
| 523 |
case AUD_FMT_U8:
|
| 524 |
case AUD_FMT_S16:
|
| 525 |
case AUD_FMT_U16:
|
| 526 |
break;
|
| 527 |
default:
|
| 528 |
invalid = 1;
|
| 529 |
break;
|
| 530 |
} |
| 531 |
|
| 532 |
invalid |= as->freq <= 0;
|
| 533 |
|
| 534 |
if (invalid) {
|
| 535 |
return -1; |
| 536 |
} |
| 537 |
return 0; |
| 538 |
} |
| 539 |
|
| 540 |
static int audio_pcm_info_eq (struct audio_pcm_info *info, audsettings_t *as) |
| 541 |
{
|
| 542 |
int bits = 8, sign = 0; |
| 543 |
|
| 544 |
switch (as->fmt) {
|
| 545 |
case AUD_FMT_S8:
|
| 546 |
sign = 1;
|
| 547 |
case AUD_FMT_U8:
|
| 548 |
break;
|
| 549 |
|
| 550 |
case AUD_FMT_S16:
|
| 551 |
sign = 1;
|
| 552 |
case AUD_FMT_U16:
|
| 553 |
bits = 16;
|
| 554 |
break;
|
| 555 |
} |
| 556 |
return info->freq == as->freq
|
| 557 |
&& info->nchannels == as->nchannels |
| 558 |
&& info->sign == sign |
| 559 |
&& info->bits == bits; |
| 560 |
} |
| 561 |
|
| 562 |
void audio_pcm_init_info (
|
| 563 |
struct audio_pcm_info *info,
|
| 564 |
audsettings_t *as, |
| 565 |
int swap_endian
|
| 566 |
) |
| 567 |
{
|
| 568 |
int bits = 8, sign = 0; |
| 569 |
|
| 570 |
switch (as->fmt) {
|
| 571 |
case AUD_FMT_S8:
|
| 572 |
sign = 1;
|
| 573 |
case AUD_FMT_U8:
|
| 574 |
break;
|
| 575 |
|
| 576 |
case AUD_FMT_S16:
|
| 577 |
sign = 1;
|
| 578 |
case AUD_FMT_U16:
|
| 579 |
bits = 16;
|
| 580 |
break;
|
| 581 |
} |
| 582 |
|
| 583 |
info->freq = as->freq; |
| 584 |
info->bits = bits; |
| 585 |
info->sign = sign; |
| 586 |
info->nchannels = as->nchannels; |
| 587 |
info->shift = (as->nchannels == 2) + (bits == 16); |
| 588 |
info->align = (1 << info->shift) - 1; |
| 589 |
info->bytes_per_second = info->freq << info->shift; |
| 590 |
info->swap_endian = swap_endian; |
| 591 |
} |
| 592 |
|
| 593 |
void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len) |
| 594 |
{
|
| 595 |
if (!len) {
|
| 596 |
return;
|
| 597 |
} |
| 598 |
|
| 599 |
if (info->sign) {
|
| 600 |
memset (buf, len << info->shift, 0x00);
|
| 601 |
} |
| 602 |
else {
|
| 603 |
if (info->bits == 8) { |
| 604 |
memset (buf, len << info->shift, 0x80);
|
| 605 |
} |
| 606 |
else {
|
| 607 |
int i;
|
| 608 |
uint16_t *p = buf; |
| 609 |
int shift = info->nchannels - 1; |
| 610 |
short s = INT16_MAX;
|
| 611 |
|
| 612 |
if (info->swap_endian) {
|
| 613 |
s = bswap16 (s); |
| 614 |
} |
| 615 |
|
| 616 |
for (i = 0; i < len << shift; i++) { |
| 617 |
p[i] = s; |
| 618 |
} |
| 619 |
} |
| 620 |
} |
| 621 |
} |
| 622 |
|
| 623 |
/*
|
| 624 |
* Hard voice (capture)
|
| 625 |
*/
|
| 626 |
static int audio_pcm_hw_find_min_in (HWVoiceIn *hw) |
| 627 |
{
|
| 628 |
SWVoiceIn *sw; |
| 629 |
int m = hw->total_samples_captured;
|
| 630 |
|
| 631 |
for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
|
| 632 |
if (sw->active) {
|
| 633 |
m = audio_MIN (m, sw->total_hw_samples_acquired); |
| 634 |
} |
| 635 |
} |
| 636 |
return m;
|
| 637 |
} |
| 638 |
|
| 639 |
int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
|
| 640 |
{
|
| 641 |
int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
|
| 642 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { |
| 643 |
dolog ("live=%d hw->samples=%d\n", live, hw->samples);
|
| 644 |
return 0; |
| 645 |
} |
| 646 |
return live;
|
| 647 |
} |
| 648 |
|
| 649 |
/*
|
| 650 |
* Soft voice (capture)
|
| 651 |
*/
|
| 652 |
static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw) |
| 653 |
{
|
| 654 |
HWVoiceIn *hw = sw->hw; |
| 655 |
int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
|
| 656 |
int rpos;
|
| 657 |
|
| 658 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { |
| 659 |
dolog ("live=%d hw->samples=%d\n", live, hw->samples);
|
| 660 |
return 0; |
| 661 |
} |
| 662 |
|
| 663 |
rpos = hw->wpos - live; |
| 664 |
if (rpos >= 0) { |
| 665 |
return rpos;
|
| 666 |
} |
| 667 |
else {
|
| 668 |
return hw->samples + rpos;
|
| 669 |
} |
| 670 |
} |
| 671 |
|
| 672 |
int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size) |
| 673 |
{
|
| 674 |
HWVoiceIn *hw = sw->hw; |
| 675 |
int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0; |
| 676 |
st_sample_t *src, *dst = sw->buf; |
| 677 |
|
| 678 |
rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples; |
| 679 |
|
| 680 |
live = hw->total_samples_captured - sw->total_hw_samples_acquired; |
| 681 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { |
| 682 |
dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
|
| 683 |
return 0; |
| 684 |
} |
| 685 |
|
| 686 |
samples = size >> sw->info.shift; |
| 687 |
if (!live) {
|
| 688 |
return 0; |
| 689 |
} |
| 690 |
|
| 691 |
swlim = (live * sw->ratio) >> 32;
|
| 692 |
swlim = audio_MIN (swlim, samples); |
| 693 |
|
| 694 |
while (swlim) {
|
| 695 |
src = hw->conv_buf + rpos; |
| 696 |
isamp = hw->wpos - rpos; |
| 697 |
/* XXX: <= ? */
|
| 698 |
if (isamp <= 0) { |
| 699 |
isamp = hw->samples - rpos; |
| 700 |
} |
| 701 |
|
| 702 |
if (!isamp) {
|
| 703 |
break;
|
| 704 |
} |
| 705 |
osamp = swlim; |
| 706 |
|
| 707 |
if (audio_bug (AUDIO_FUNC, osamp < 0)) { |
| 708 |
dolog ("osamp=%d\n", osamp);
|
| 709 |
return 0; |
| 710 |
} |
| 711 |
|
| 712 |
st_rate_flow (sw->rate, src, dst, &isamp, &osamp); |
| 713 |
swlim -= osamp; |
| 714 |
rpos = (rpos + isamp) % hw->samples; |
| 715 |
dst += osamp; |
| 716 |
ret += osamp; |
| 717 |
total += isamp; |
| 718 |
} |
| 719 |
|
| 720 |
sw->clip (buf, sw->buf, ret); |
| 721 |
sw->total_hw_samples_acquired += total; |
| 722 |
return ret << sw->info.shift;
|
| 723 |
} |
| 724 |
|
| 725 |
/*
|
| 726 |
* Hard voice (playback)
|
| 727 |
*/
|
| 728 |
static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep) |
| 729 |
{
|
| 730 |
SWVoiceOut *sw; |
| 731 |
int m = INT_MAX;
|
| 732 |
int nb_live = 0; |
| 733 |
|
| 734 |
for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
|
| 735 |
if (sw->active || !sw->empty) {
|
| 736 |
m = audio_MIN (m, sw->total_hw_samples_mixed); |
| 737 |
nb_live += 1;
|
| 738 |
} |
| 739 |
} |
| 740 |
|
| 741 |
*nb_livep = nb_live; |
| 742 |
return m;
|
| 743 |
} |
| 744 |
|
| 745 |
int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live) |
| 746 |
{
|
| 747 |
int smin;
|
| 748 |
|
| 749 |
smin = audio_pcm_hw_find_min_out (hw, nb_live); |
| 750 |
|
| 751 |
if (!*nb_live) {
|
| 752 |
return 0; |
| 753 |
} |
| 754 |
else {
|
| 755 |
int live = smin;
|
| 756 |
|
| 757 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { |
| 758 |
dolog ("live=%d hw->samples=%d\n", live, hw->samples);
|
| 759 |
return 0; |
| 760 |
} |
| 761 |
return live;
|
| 762 |
} |
| 763 |
} |
| 764 |
|
| 765 |
int audio_pcm_hw_get_live_out (HWVoiceOut *hw)
|
| 766 |
{
|
| 767 |
int nb_live;
|
| 768 |
int live;
|
| 769 |
|
| 770 |
live = audio_pcm_hw_get_live_out2 (hw, &nb_live); |
| 771 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { |
| 772 |
dolog ("live=%d hw->samples=%d\n", live, hw->samples);
|
| 773 |
return 0; |
| 774 |
} |
| 775 |
return live;
|
| 776 |
} |
| 777 |
|
| 778 |
/*
|
| 779 |
* Soft voice (playback)
|
| 780 |
*/
|
| 781 |
int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size) |
| 782 |
{
|
| 783 |
int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
|
| 784 |
int ret = 0, pos = 0, total = 0; |
| 785 |
|
| 786 |
if (!sw) {
|
| 787 |
return size;
|
| 788 |
} |
| 789 |
|
| 790 |
hwsamples = sw->hw->samples; |
| 791 |
|
| 792 |
live = sw->total_hw_samples_mixed; |
| 793 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){ |
| 794 |
dolog ("live=%d hw->samples=%d\n", live, hwsamples);
|
| 795 |
return 0; |
| 796 |
} |
| 797 |
|
| 798 |
if (live == hwsamples) {
|
| 799 |
return 0; |
| 800 |
} |
| 801 |
|
| 802 |
wpos = (sw->hw->rpos + live) % hwsamples; |
| 803 |
samples = size >> sw->info.shift; |
| 804 |
|
| 805 |
dead = hwsamples - live; |
| 806 |
swlim = ((int64_t) dead << 32) / sw->ratio;
|
| 807 |
swlim = audio_MIN (swlim, samples); |
| 808 |
if (swlim) {
|
| 809 |
sw->conv (sw->buf, buf, swlim, &sw->vol); |
| 810 |
} |
| 811 |
|
| 812 |
while (swlim) {
|
| 813 |
dead = hwsamples - live; |
| 814 |
left = hwsamples - wpos; |
| 815 |
blck = audio_MIN (dead, left); |
| 816 |
if (!blck) {
|
| 817 |
break;
|
| 818 |
} |
| 819 |
isamp = swlim; |
| 820 |
osamp = blck; |
| 821 |
st_rate_flow_mix ( |
| 822 |
sw->rate, |
| 823 |
sw->buf + pos, |
| 824 |
sw->hw->mix_buf + wpos, |
| 825 |
&isamp, |
| 826 |
&osamp |
| 827 |
); |
| 828 |
ret += isamp; |
| 829 |
swlim -= isamp; |
| 830 |
pos += isamp; |
| 831 |
live += osamp; |
| 832 |
wpos = (wpos + osamp) % hwsamples; |
| 833 |
total += osamp; |
| 834 |
} |
| 835 |
|
| 836 |
sw->total_hw_samples_mixed += total; |
| 837 |
sw->empty = sw->total_hw_samples_mixed == 0;
|
| 838 |
|
| 839 |
#ifdef DEBUG_OUT
|
| 840 |
dolog ( |
| 841 |
"%s: write size %d ret %d total sw %d\n",
|
| 842 |
SW_NAME (sw), |
| 843 |
size >> sw->info.shift, |
| 844 |
ret, |
| 845 |
sw->total_hw_samples_mixed |
| 846 |
); |
| 847 |
#endif
|
| 848 |
|
| 849 |
return ret << sw->info.shift;
|
| 850 |
} |
| 851 |
|
| 852 |
#ifdef DEBUG_AUDIO
|
| 853 |
static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info) |
| 854 |
{
|
| 855 |
dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
|
| 856 |
cap, info->bits, info->sign, info->freq, info->nchannels); |
| 857 |
} |
| 858 |
#endif
|
| 859 |
|
| 860 |
#define DAC
|
| 861 |
#include "audio_template.h" |
| 862 |
#undef DAC
|
| 863 |
#include "audio_template.h" |
| 864 |
|
| 865 |
int AUD_write (SWVoiceOut *sw, void *buf, int size) |
| 866 |
{
|
| 867 |
int bytes;
|
| 868 |
|
| 869 |
if (!sw) {
|
| 870 |
/* XXX: Consider options */
|
| 871 |
return size;
|
| 872 |
} |
| 873 |
|
| 874 |
if (!sw->hw->enabled) {
|
| 875 |
dolog ("Writing to disabled voice %s\n", SW_NAME (sw));
|
| 876 |
return 0; |
| 877 |
} |
| 878 |
|
| 879 |
bytes = sw->hw->pcm_ops->write (sw, buf, size); |
| 880 |
return bytes;
|
| 881 |
} |
| 882 |
|
| 883 |
int AUD_read (SWVoiceIn *sw, void *buf, int size) |
| 884 |
{
|
| 885 |
int bytes;
|
| 886 |
|
| 887 |
if (!sw) {
|
| 888 |
/* XXX: Consider options */
|
| 889 |
return size;
|
| 890 |
} |
| 891 |
|
| 892 |
if (!sw->hw->enabled) {
|
| 893 |
dolog ("Reading from disabled voice %s\n", SW_NAME (sw));
|
| 894 |
return 0; |
| 895 |
} |
| 896 |
|
| 897 |
bytes = sw->hw->pcm_ops->read (sw, buf, size); |
| 898 |
return bytes;
|
| 899 |
} |
| 900 |
|
| 901 |
int AUD_get_buffer_size_out (SWVoiceOut *sw)
|
| 902 |
{
|
| 903 |
return sw->hw->samples << sw->hw->info.shift;
|
| 904 |
} |
| 905 |
|
| 906 |
void AUD_set_active_out (SWVoiceOut *sw, int on) |
| 907 |
{
|
| 908 |
HWVoiceOut *hw; |
| 909 |
|
| 910 |
if (!sw) {
|
| 911 |
return;
|
| 912 |
} |
| 913 |
|
| 914 |
hw = sw->hw; |
| 915 |
if (sw->active != on) {
|
| 916 |
SWVoiceOut *temp_sw; |
| 917 |
|
| 918 |
if (on) {
|
| 919 |
int total;
|
| 920 |
|
| 921 |
hw->pending_disable = 0;
|
| 922 |
if (!hw->enabled) {
|
| 923 |
hw->enabled = 1;
|
| 924 |
hw->pcm_ops->ctl_out (hw, VOICE_ENABLE); |
| 925 |
} |
| 926 |
|
| 927 |
if (sw->empty) {
|
| 928 |
total = 0;
|
| 929 |
} |
| 930 |
} |
| 931 |
else {
|
| 932 |
if (hw->enabled) {
|
| 933 |
int nb_active = 0; |
| 934 |
|
| 935 |
for (temp_sw = hw->sw_head.lh_first; temp_sw;
|
| 936 |
temp_sw = temp_sw->entries.le_next) {
|
| 937 |
nb_active += temp_sw->active != 0;
|
| 938 |
} |
| 939 |
|
| 940 |
hw->pending_disable = nb_active == 1;
|
| 941 |
} |
| 942 |
} |
| 943 |
sw->active = on; |
| 944 |
} |
| 945 |
} |
| 946 |
|
| 947 |
void AUD_set_active_in (SWVoiceIn *sw, int on) |
| 948 |
{
|
| 949 |
HWVoiceIn *hw; |
| 950 |
|
| 951 |
if (!sw) {
|
| 952 |
return;
|
| 953 |
} |
| 954 |
|
| 955 |
hw = sw->hw; |
| 956 |
if (sw->active != on) {
|
| 957 |
SWVoiceIn *temp_sw; |
| 958 |
|
| 959 |
if (on) {
|
| 960 |
if (!hw->enabled) {
|
| 961 |
hw->enabled = 1;
|
| 962 |
hw->pcm_ops->ctl_in (hw, VOICE_ENABLE); |
| 963 |
} |
| 964 |
sw->total_hw_samples_acquired = hw->total_samples_captured; |
| 965 |
} |
| 966 |
else {
|
| 967 |
if (hw->enabled) {
|
| 968 |
int nb_active = 0; |
| 969 |
|
| 970 |
for (temp_sw = hw->sw_head.lh_first; temp_sw;
|
| 971 |
temp_sw = temp_sw->entries.le_next) {
|
| 972 |
nb_active += temp_sw->active != 0;
|
| 973 |
} |
| 974 |
|
| 975 |
if (nb_active == 1) { |
| 976 |
hw->enabled = 0;
|
| 977 |
hw->pcm_ops->ctl_in (hw, VOICE_DISABLE); |
| 978 |
} |
| 979 |
} |
| 980 |
} |
| 981 |
sw->active = on; |
| 982 |
} |
| 983 |
} |
| 984 |
|
| 985 |
static int audio_get_avail (SWVoiceIn *sw) |
| 986 |
{
|
| 987 |
int live;
|
| 988 |
|
| 989 |
if (!sw) {
|
| 990 |
return 0; |
| 991 |
} |
| 992 |
|
| 993 |
live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired; |
| 994 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) { |
| 995 |
dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
|
| 996 |
return 0; |
| 997 |
} |
| 998 |
|
| 999 |
ldebug ( |
| 1000 |
"%s: get_avail live %d ret %lld\n",
|
| 1001 |
SW_NAME (sw), |
| 1002 |
live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
|
| 1003 |
); |
| 1004 |
|
| 1005 |
return (((int64_t) live << 32) / sw->ratio) << sw->info.shift; |
| 1006 |
} |
| 1007 |
|
| 1008 |
static int audio_get_free (SWVoiceOut *sw) |
| 1009 |
{
|
| 1010 |
int live, dead;
|
| 1011 |
|
| 1012 |
if (!sw) {
|
| 1013 |
return 0; |
| 1014 |
} |
| 1015 |
|
| 1016 |
live = sw->total_hw_samples_mixed; |
| 1017 |
|
| 1018 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) { |
| 1019 |
dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
|
| 1020 |
return 0; |
| 1021 |
} |
| 1022 |
|
| 1023 |
dead = sw->hw->samples - live; |
| 1024 |
|
| 1025 |
#ifdef DEBUG_OUT
|
| 1026 |
dolog ("%s: get_free live %d dead %d ret %lld\n",
|
| 1027 |
SW_NAME (sw), |
| 1028 |
live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
|
| 1029 |
#endif
|
| 1030 |
|
| 1031 |
return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift; |
| 1032 |
} |
| 1033 |
|
| 1034 |
static void audio_run_out (AudioState *s) |
| 1035 |
{
|
| 1036 |
HWVoiceOut *hw = NULL;
|
| 1037 |
SWVoiceOut *sw; |
| 1038 |
|
| 1039 |
while ((hw = audio_pcm_hw_find_any_enabled_out (s, hw))) {
|
| 1040 |
int played;
|
| 1041 |
int live, free, nb_live, cleanup_required;
|
| 1042 |
|
| 1043 |
live = audio_pcm_hw_get_live_out2 (hw, &nb_live); |
| 1044 |
if (!nb_live) {
|
| 1045 |
live = 0;
|
| 1046 |
} |
| 1047 |
|
| 1048 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { |
| 1049 |
dolog ("live=%d hw->samples=%d\n", live, hw->samples);
|
| 1050 |
continue;
|
| 1051 |
} |
| 1052 |
|
| 1053 |
if (hw->pending_disable && !nb_live) {
|
| 1054 |
#ifdef DEBUG_OUT
|
| 1055 |
dolog ("Disabling voice\n");
|
| 1056 |
#endif
|
| 1057 |
hw->enabled = 0;
|
| 1058 |
hw->pending_disable = 0;
|
| 1059 |
hw->pcm_ops->ctl_out (hw, VOICE_DISABLE); |
| 1060 |
continue;
|
| 1061 |
} |
| 1062 |
|
| 1063 |
if (!live) {
|
| 1064 |
for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
|
| 1065 |
if (sw->active) {
|
| 1066 |
free = audio_get_free (sw); |
| 1067 |
if (free > 0) { |
| 1068 |
sw->callback.fn (sw->callback.opaque, free); |
| 1069 |
} |
| 1070 |
} |
| 1071 |
} |
| 1072 |
continue;
|
| 1073 |
} |
| 1074 |
|
| 1075 |
played = hw->pcm_ops->run_out (hw); |
| 1076 |
if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
|
| 1077 |
dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
|
| 1078 |
hw->rpos, hw->samples, played); |
| 1079 |
hw->rpos = 0;
|
| 1080 |
} |
| 1081 |
|
| 1082 |
#ifdef DEBUG_OUT
|
| 1083 |
dolog ("played=%d\n", played);
|
| 1084 |
#endif
|
| 1085 |
|
| 1086 |
if (played) {
|
| 1087 |
hw->ts_helper += played; |
| 1088 |
} |
| 1089 |
|
| 1090 |
cleanup_required = 0;
|
| 1091 |
for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
|
| 1092 |
if (!sw->active && sw->empty) {
|
| 1093 |
continue;
|
| 1094 |
} |
| 1095 |
|
| 1096 |
if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
|
| 1097 |
dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
|
| 1098 |
played, sw->total_hw_samples_mixed); |
| 1099 |
played = sw->total_hw_samples_mixed; |
| 1100 |
} |
| 1101 |
|
| 1102 |
sw->total_hw_samples_mixed -= played; |
| 1103 |
|
| 1104 |
if (!sw->total_hw_samples_mixed) {
|
| 1105 |
sw->empty = 1;
|
| 1106 |
cleanup_required |= !sw->active && !sw->callback.fn; |
| 1107 |
} |
| 1108 |
|
| 1109 |
if (sw->active) {
|
| 1110 |
free = audio_get_free (sw); |
| 1111 |
if (free > 0) { |
| 1112 |
sw->callback.fn (sw->callback.opaque, free); |
| 1113 |
} |
| 1114 |
} |
| 1115 |
} |
| 1116 |
|
| 1117 |
if (cleanup_required) {
|
| 1118 |
restart:
|
| 1119 |
for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
|
| 1120 |
if (!sw->active && !sw->callback.fn) {
|
| 1121 |
#ifdef DEBUG_PLIVE
|
| 1122 |
dolog ("Finishing with old voice\n");
|
| 1123 |
#endif
|
| 1124 |
audio_close_out (s, sw); |
| 1125 |
goto restart; /* play it safe */ |
| 1126 |
} |
| 1127 |
} |
| 1128 |
} |
| 1129 |
} |
| 1130 |
} |
| 1131 |
|
| 1132 |
static void audio_run_in (AudioState *s) |
| 1133 |
{
|
| 1134 |
HWVoiceIn *hw = NULL;
|
| 1135 |
|
| 1136 |
while ((hw = audio_pcm_hw_find_any_enabled_in (s, hw))) {
|
| 1137 |
SWVoiceIn *sw; |
| 1138 |
int captured, min;
|
| 1139 |
|
| 1140 |
captured = hw->pcm_ops->run_in (hw); |
| 1141 |
|
| 1142 |
min = audio_pcm_hw_find_min_in (hw); |
| 1143 |
hw->total_samples_captured += captured - min; |
| 1144 |
hw->ts_helper += captured; |
| 1145 |
|
| 1146 |
for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
|
| 1147 |
sw->total_hw_samples_acquired -= min; |
| 1148 |
|
| 1149 |
if (sw->active) {
|
| 1150 |
int avail;
|
| 1151 |
|
| 1152 |
avail = audio_get_avail (sw); |
| 1153 |
if (avail > 0) { |
| 1154 |
sw->callback.fn (sw->callback.opaque, avail); |
| 1155 |
} |
| 1156 |
} |
| 1157 |
} |
| 1158 |
} |
| 1159 |
} |
| 1160 |
|
| 1161 |
static void audio_timer (void *opaque) |
| 1162 |
{
|
| 1163 |
AudioState *s = opaque; |
| 1164 |
|
| 1165 |
audio_run_out (s); |
| 1166 |
audio_run_in (s); |
| 1167 |
|
| 1168 |
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks); |
| 1169 |
} |
| 1170 |
|
| 1171 |
static struct audio_option audio_options[] = { |
| 1172 |
/* DAC */
|
| 1173 |
{"DAC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_out.enabled,
|
| 1174 |
"Use fixed settings for host DAC", NULL, 0}, |
| 1175 |
|
| 1176 |
{"DAC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_out.settings.freq,
|
| 1177 |
"Frequency for fixed host DAC", NULL, 0}, |
| 1178 |
|
| 1179 |
{"DAC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_out.settings.fmt,
|
| 1180 |
"Format for fixed host DAC", NULL, 0}, |
| 1181 |
|
| 1182 |
{"DAC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_out.settings.nchannels,
|
| 1183 |
"Number of channels for fixed DAC (1 - mono, 2 - stereo)", NULL, 0}, |
| 1184 |
|
| 1185 |
{"DAC_VOICES", AUD_OPT_INT, &conf.fixed_out.nb_voices,
|
| 1186 |
"Number of voices for DAC", NULL, 0}, |
| 1187 |
|
| 1188 |
/* ADC */
|
| 1189 |
{"ADC_FIXED_SETTINGS", AUD_OPT_BOOL, &conf.fixed_in.enabled,
|
| 1190 |
"Use fixed settings for host ADC", NULL, 0}, |
| 1191 |
|
| 1192 |
{"ADC_FIXED_FREQ", AUD_OPT_INT, &conf.fixed_in.settings.freq,
|
| 1193 |
"Frequency for fixed host ADC", NULL, 0}, |
| 1194 |
|
| 1195 |
{"ADC_FIXED_FMT", AUD_OPT_FMT, &conf.fixed_in.settings.fmt,
|
| 1196 |
"Format for fixed host ADC", NULL, 0}, |
| 1197 |
|
| 1198 |
{"ADC_FIXED_CHANNELS", AUD_OPT_INT, &conf.fixed_in.settings.nchannels,
|
| 1199 |
"Number of channels for fixed ADC (1 - mono, 2 - stereo)", NULL, 0}, |
| 1200 |
|
| 1201 |
{"ADC_VOICES", AUD_OPT_INT, &conf.fixed_in.nb_voices,
|
| 1202 |
"Number of voices for ADC", NULL, 0}, |
| 1203 |
|
| 1204 |
/* Misc */
|
| 1205 |
{"TIMER_PERIOD", AUD_OPT_INT, &conf.period.hz,
|
| 1206 |
"Timer period in HZ (0 - use lowest possible)", NULL, 0}, |
| 1207 |
|
| 1208 |
{"PLIVE", AUD_OPT_BOOL, &conf.plive,
|
| 1209 |
"(undocumented)", NULL, 0}, |
| 1210 |
|
| 1211 |
{"LOG_TO_MONITOR", AUD_OPT_BOOL, &conf.log_to_monitor,
|
| 1212 |
"print logging messages to montior instead of stderr", NULL, 0}, |
| 1213 |
|
| 1214 |
{NULL, 0, NULL, NULL, NULL, 0}
|
| 1215 |
}; |
| 1216 |
|
| 1217 |
static void audio_pp_nb_voices (const char *typ, int nb) |
| 1218 |
{
|
| 1219 |
switch (nb) {
|
| 1220 |
case 0: |
| 1221 |
printf ("Does not support %s\n", typ);
|
| 1222 |
break;
|
| 1223 |
case 1: |
| 1224 |
printf ("One %s voice\n", typ);
|
| 1225 |
break;
|
| 1226 |
case INT_MAX:
|
| 1227 |
printf ("Theoretically supports many %s voices\n", typ);
|
| 1228 |
break;
|
| 1229 |
default:
|
| 1230 |
printf ("Theoretically supports upto %d %s voices\n", nb, typ);
|
| 1231 |
break;
|
| 1232 |
} |
| 1233 |
|
| 1234 |
} |
| 1235 |
|
| 1236 |
void AUD_help (void) |
| 1237 |
{
|
| 1238 |
size_t i; |
| 1239 |
|
| 1240 |
audio_process_options ("AUDIO", audio_options);
|
| 1241 |
for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) { |
| 1242 |
struct audio_driver *d = drvtab[i];
|
| 1243 |
if (d->options) {
|
| 1244 |
audio_process_options (d->name, d->options); |
| 1245 |
} |
| 1246 |
} |
| 1247 |
|
| 1248 |
printf ("Audio options:\n");
|
| 1249 |
audio_print_options ("AUDIO", audio_options);
|
| 1250 |
printf ("\n");
|
| 1251 |
|
| 1252 |
printf ("Available drivers:\n");
|
| 1253 |
|
| 1254 |
for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) { |
| 1255 |
struct audio_driver *d = drvtab[i];
|
| 1256 |
|
| 1257 |
printf ("Name: %s\n", d->name);
|
| 1258 |
printf ("Description: %s\n", d->descr);
|
| 1259 |
|
| 1260 |
audio_pp_nb_voices ("playback", d->max_voices_out);
|
| 1261 |
audio_pp_nb_voices ("capture", d->max_voices_in);
|
| 1262 |
|
| 1263 |
if (d->options) {
|
| 1264 |
printf ("Options:\n");
|
| 1265 |
audio_print_options (d->name, d->options); |
| 1266 |
} |
| 1267 |
else {
|
| 1268 |
printf ("No options\n");
|
| 1269 |
} |
| 1270 |
printf ("\n");
|
| 1271 |
} |
| 1272 |
|
| 1273 |
printf ( |
| 1274 |
"Options are settable through environment variables.\n"
|
| 1275 |
"Example:\n"
|
| 1276 |
#ifdef _WIN32
|
| 1277 |
" set QEMU_AUDIO_DRV=wav\n"
|
| 1278 |
" set QEMU_WAV_PATH=c:\\tune.wav\n"
|
| 1279 |
#else
|
| 1280 |
" export QEMU_AUDIO_DRV=wav\n"
|
| 1281 |
" export QEMU_WAV_PATH=$HOME/tune.wav\n"
|
| 1282 |
"(for csh replace export with setenv in the above)\n"
|
| 1283 |
#endif
|
| 1284 |
" qemu ...\n\n"
|
| 1285 |
); |
| 1286 |
} |
| 1287 |
|
| 1288 |
static int audio_driver_init (AudioState *s, struct audio_driver *drv) |
| 1289 |
{
|
| 1290 |
if (drv->options) {
|
| 1291 |
audio_process_options (drv->name, drv->options); |
| 1292 |
} |
| 1293 |
s->drv_opaque = drv->init (); |
| 1294 |
|
| 1295 |
if (s->drv_opaque) {
|
| 1296 |
audio_init_nb_voices_out (s, drv); |
| 1297 |
audio_init_nb_voices_in (s, drv); |
| 1298 |
s->drv = drv; |
| 1299 |
return 0; |
| 1300 |
} |
| 1301 |
else {
|
| 1302 |
dolog ("Could not init `%s' audio driver\n", drv->name);
|
| 1303 |
return -1; |
| 1304 |
} |
| 1305 |
} |
| 1306 |
|
| 1307 |
static void audio_vm_change_state_handler (void *opaque, int running) |
| 1308 |
{
|
| 1309 |
AudioState *s = opaque; |
| 1310 |
HWVoiceOut *hwo = NULL;
|
| 1311 |
HWVoiceIn *hwi = NULL;
|
| 1312 |
int op = running ? VOICE_ENABLE : VOICE_DISABLE;
|
| 1313 |
|
| 1314 |
while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
|
| 1315 |
hwo->pcm_ops->ctl_out (hwo, op); |
| 1316 |
} |
| 1317 |
|
| 1318 |
while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
|
| 1319 |
hwi->pcm_ops->ctl_in (hwi, op); |
| 1320 |
} |
| 1321 |
} |
| 1322 |
|
| 1323 |
static void audio_atexit (void) |
| 1324 |
{
|
| 1325 |
AudioState *s = &glob_audio_state; |
| 1326 |
HWVoiceOut *hwo = NULL;
|
| 1327 |
HWVoiceIn *hwi = NULL;
|
| 1328 |
|
| 1329 |
while ((hwo = audio_pcm_hw_find_any_enabled_out (s, hwo))) {
|
| 1330 |
hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE); |
| 1331 |
hwo->pcm_ops->fini_out (hwo); |
| 1332 |
} |
| 1333 |
|
| 1334 |
while ((hwi = audio_pcm_hw_find_any_enabled_in (s, hwi))) {
|
| 1335 |
hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE); |
| 1336 |
hwi->pcm_ops->fini_in (hwi); |
| 1337 |
} |
| 1338 |
|
| 1339 |
if (s->drv) {
|
| 1340 |
s->drv->fini (s->drv_opaque); |
| 1341 |
} |
| 1342 |
} |
| 1343 |
|
| 1344 |
static void audio_save (QEMUFile *f, void *opaque) |
| 1345 |
{
|
| 1346 |
(void) f;
|
| 1347 |
(void) opaque;
|
| 1348 |
} |
| 1349 |
|
| 1350 |
static int audio_load (QEMUFile *f, void *opaque, int version_id) |
| 1351 |
{
|
| 1352 |
(void) f;
|
| 1353 |
(void) opaque;
|
| 1354 |
|
| 1355 |
if (version_id != 1) { |
| 1356 |
return -EINVAL;
|
| 1357 |
} |
| 1358 |
|
| 1359 |
return 0; |
| 1360 |
} |
| 1361 |
|
| 1362 |
void AUD_register_card (AudioState *s, const char *name, QEMUSoundCard *card) |
| 1363 |
{
|
| 1364 |
card->audio = s; |
| 1365 |
card->name = qemu_strdup (name); |
| 1366 |
memset (&card->entries, 0, sizeof (card->entries)); |
| 1367 |
LIST_INSERT_HEAD (&s->card_head, card, entries); |
| 1368 |
} |
| 1369 |
|
| 1370 |
void AUD_remove_card (QEMUSoundCard *card)
|
| 1371 |
{
|
| 1372 |
LIST_REMOVE (card, entries); |
| 1373 |
card->audio = NULL;
|
| 1374 |
qemu_free (card->name); |
| 1375 |
} |
| 1376 |
|
| 1377 |
AudioState *AUD_init (void)
|
| 1378 |
{
|
| 1379 |
size_t i; |
| 1380 |
int done = 0; |
| 1381 |
const char *drvname; |
| 1382 |
AudioState *s = &glob_audio_state; |
| 1383 |
|
| 1384 |
LIST_INIT (&s->hw_head_out); |
| 1385 |
LIST_INIT (&s->hw_head_in); |
| 1386 |
atexit (audio_atexit); |
| 1387 |
|
| 1388 |
s->ts = qemu_new_timer (vm_clock, audio_timer, s); |
| 1389 |
if (!s->ts) {
|
| 1390 |
dolog ("Could not create audio timer\n");
|
| 1391 |
return NULL; |
| 1392 |
} |
| 1393 |
|
| 1394 |
audio_process_options ("AUDIO", audio_options);
|
| 1395 |
|
| 1396 |
s->nb_hw_voices_out = conf.fixed_out.nb_voices; |
| 1397 |
s->nb_hw_voices_in = conf.fixed_in.nb_voices; |
| 1398 |
|
| 1399 |
if (s->nb_hw_voices_out <= 0) { |
| 1400 |
dolog ("Bogus number of playback voices %d, setting to 1\n",
|
| 1401 |
s->nb_hw_voices_out); |
| 1402 |
s->nb_hw_voices_out = 1;
|
| 1403 |
} |
| 1404 |
|
| 1405 |
if (s->nb_hw_voices_in <= 0) { |
| 1406 |
dolog ("Bogus number of capture voices %d, setting to 0\n",
|
| 1407 |
s->nb_hw_voices_in); |
| 1408 |
s->nb_hw_voices_in = 0;
|
| 1409 |
} |
| 1410 |
|
| 1411 |
{
|
| 1412 |
int def;
|
| 1413 |
drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def); |
| 1414 |
} |
| 1415 |
|
| 1416 |
if (drvname) {
|
| 1417 |
int found = 0; |
| 1418 |
|
| 1419 |
for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) { |
| 1420 |
if (!strcmp (drvname, drvtab[i]->name)) {
|
| 1421 |
done = !audio_driver_init (s, drvtab[i]); |
| 1422 |
found = 1;
|
| 1423 |
break;
|
| 1424 |
} |
| 1425 |
} |
| 1426 |
|
| 1427 |
if (!found) {
|
| 1428 |
dolog ("Unknown audio driver `%s'\n", drvname);
|
| 1429 |
dolog ("Run with -audio-help to list available drivers\n");
|
| 1430 |
} |
| 1431 |
} |
| 1432 |
|
| 1433 |
if (!done) {
|
| 1434 |
for (i = 0; !done && i < sizeof (drvtab) / sizeof (drvtab[0]); i++) { |
| 1435 |
if (drvtab[i]->can_be_default) {
|
| 1436 |
done = !audio_driver_init (s, drvtab[i]); |
| 1437 |
} |
| 1438 |
} |
| 1439 |
} |
| 1440 |
|
| 1441 |
if (!done) {
|
| 1442 |
done = !audio_driver_init (s, &no_audio_driver); |
| 1443 |
if (!done) {
|
| 1444 |
dolog ("Could not initialize audio subsystem\n");
|
| 1445 |
} |
| 1446 |
else {
|
| 1447 |
dolog ("warning: Using timer based audio emulation\n");
|
| 1448 |
} |
| 1449 |
} |
| 1450 |
|
| 1451 |
if (done) {
|
| 1452 |
VMChangeStateEntry *e; |
| 1453 |
|
| 1454 |
if (conf.period.hz <= 0) { |
| 1455 |
if (conf.period.hz < 0) { |
| 1456 |
dolog ("warning: Timer period is negative - %d "
|
| 1457 |
"treating as zero\n",
|
| 1458 |
conf.period.hz); |
| 1459 |
} |
| 1460 |
conf.period.ticks = 1;
|
| 1461 |
} |
| 1462 |
else {
|
| 1463 |
conf.period.ticks = ticks_per_sec / conf.period.hz; |
| 1464 |
} |
| 1465 |
|
| 1466 |
e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s); |
| 1467 |
if (!e) {
|
| 1468 |
dolog ("warning: Could not register change state handler\n"
|
| 1469 |
"(Audio can continue looping even after stopping the VM)\n");
|
| 1470 |
} |
| 1471 |
} |
| 1472 |
else {
|
| 1473 |
qemu_del_timer (s->ts); |
| 1474 |
return NULL; |
| 1475 |
} |
| 1476 |
|
| 1477 |
LIST_INIT (&s->card_head); |
| 1478 |
register_savevm ("audio", 0, 1, audio_save, audio_load, s); |
| 1479 |
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks); |
| 1480 |
return s;
|
| 1481 |
} |