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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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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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|
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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"; |
186 |
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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); |
242 |
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; |
271 |
if (cap) {
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fprintf (stderr, "%s: ", cap);
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} |
274 |
va_start (ap, fmt); |
275 |
vfprintf (stderr, fmt, ap); |
276 |
va_end (ap); |
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} |
278 |
|
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void AUD_vlog (const char *cap, const char *fmt, va_list ap) |
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{ |
281 |
if (cap) {
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fprintf (stderr, "%s: ", cap);
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} |
284 |
vfprintf (stderr, fmt, ap); |
285 |
} |
286 |
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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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} |
296 |
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if (!opt) {
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dolog ("No options\n");
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return;
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} |
301 |
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uprefix = audio_alloc_prefix (prefix); |
303 |
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for (; opt->name; opt++) {
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const char *state = "default"; |
306 |
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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} |
311 |
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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); |
317 |
} |
318 |
break;
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319 |
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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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} |
325 |
break;
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case AUD_OPT_FMT:
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{ |
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audfmt_e *fmtp = opt->valp; |
330 |
printf ( |
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"format, %s = %s, (one of: U8 S8 U16 S16)\n",
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state, |
333 |
audio_audfmt_to_string (*fmtp) |
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); |
335 |
} |
336 |
break;
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337 |
|
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case AUD_OPT_STR:
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{ |
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const char **strp = opt->valp; |
341 |
printf ("string, %s = %s\n",
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state, |
343 |
*strp ? *strp : "(not set)");
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} |
345 |
break;
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346 |
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347 |
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); |
351 |
break;
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} |
353 |
printf (" %s\n", opt->descr);
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} |
355 |
|
356 |
qemu_free (uprefix); |
357 |
} |
358 |
|
359 |
static void audio_process_options (const char *prefix, |
360 |
struct audio_option *opt)
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361 |
{ |
362 |
char *optname;
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const char qemu_prefix[] = "QEMU_"; |
364 |
size_t preflen; |
365 |
|
366 |
if (audio_bug (AUDIO_FUNC, !prefix)) {
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dolog ("prefix = NULL\n");
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368 |
return;
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369 |
} |
370 |
|
371 |
if (audio_bug (AUDIO_FUNC, !opt)) {
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372 |
dolog ("opt = NULL\n");
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373 |
return;
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374 |
} |
375 |
|
376 |
preflen = strlen (prefix); |
377 |
|
378 |
for (; opt->name; opt++) {
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379 |
size_t len, i; |
380 |
int def;
|
381 |
|
382 |
if (!opt->valp) {
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383 |
dolog ("Option value pointer for `%s' is not set\n",
|
384 |
opt->name); |
385 |
continue;
|
386 |
} |
387 |
|
388 |
len = strlen (opt->name); |
389 |
optname = qemu_malloc (len + preflen + sizeof (qemu_prefix) + 1); |
390 |
if (!optname) {
|
391 |
dolog ("Can not allocate memory for option name `%s'\n",
|
392 |
opt->name); |
393 |
continue;
|
394 |
} |
395 |
|
396 |
strcpy (optname, qemu_prefix); |
397 |
for (i = 0; i <= preflen; ++i) { |
398 |
optname[i + sizeof (qemu_prefix) - 1] = toupper (prefix[i]); |
399 |
} |
400 |
strcat (optname, "_");
|
401 |
strcat (optname, opt->name); |
402 |
|
403 |
def = 1;
|
404 |
switch (opt->tag) {
|
405 |
case AUD_OPT_BOOL:
|
406 |
case AUD_OPT_INT:
|
407 |
{ |
408 |
int *intp = opt->valp;
|
409 |
*intp = audio_get_conf_int (optname, *intp, &def); |
410 |
} |
411 |
break;
|
412 |
|
413 |
case AUD_OPT_FMT:
|
414 |
{ |
415 |
audfmt_e *fmtp = opt->valp; |
416 |
*fmtp = audio_get_conf_fmt (optname, *fmtp, &def); |
417 |
} |
418 |
break;
|
419 |
|
420 |
case AUD_OPT_STR:
|
421 |
{ |
422 |
const char **strp = opt->valp; |
423 |
*strp = audio_get_conf_str (optname, *strp, &def); |
424 |
} |
425 |
break;
|
426 |
|
427 |
default:
|
428 |
dolog ("Bad value tag for option `%s' - %d\n",
|
429 |
optname, opt->tag); |
430 |
break;
|
431 |
} |
432 |
|
433 |
if (!opt->overridenp) {
|
434 |
opt->overridenp = &opt->overriden; |
435 |
} |
436 |
*opt->overridenp = !def; |
437 |
qemu_free (optname); |
438 |
} |
439 |
} |
440 |
|
441 |
static int audio_pcm_info_eq (struct audio_pcm_info *info, int freq, |
442 |
int nchannels, audfmt_e fmt)
|
443 |
{ |
444 |
int bits = 8, sign = 0; |
445 |
|
446 |
switch (fmt) {
|
447 |
case AUD_FMT_S8:
|
448 |
sign = 1;
|
449 |
case AUD_FMT_U8:
|
450 |
break;
|
451 |
|
452 |
case AUD_FMT_S16:
|
453 |
sign = 1;
|
454 |
case AUD_FMT_U16:
|
455 |
bits = 16;
|
456 |
break;
|
457 |
} |
458 |
return info->freq == freq
|
459 |
&& info->nchannels == nchannels |
460 |
&& info->sign == sign |
461 |
&& info->bits == bits; |
462 |
} |
463 |
|
464 |
void audio_pcm_init_info (struct audio_pcm_info *info, int freq, |
465 |
int nchannels, audfmt_e fmt, int swap_endian) |
466 |
{ |
467 |
int bits = 8, sign = 0; |
468 |
|
469 |
switch (fmt) {
|
470 |
case AUD_FMT_S8:
|
471 |
sign = 1;
|
472 |
case AUD_FMT_U8:
|
473 |
break;
|
474 |
|
475 |
case AUD_FMT_S16:
|
476 |
sign = 1;
|
477 |
case AUD_FMT_U16:
|
478 |
bits = 16;
|
479 |
break;
|
480 |
} |
481 |
|
482 |
info->freq = freq; |
483 |
info->bits = bits; |
484 |
info->sign = sign; |
485 |
info->nchannels = nchannels; |
486 |
info->shift = (nchannels == 2) + (bits == 16); |
487 |
info->align = (1 << info->shift) - 1; |
488 |
info->bytes_per_second = info->freq << info->shift; |
489 |
info->swap_endian = swap_endian; |
490 |
} |
491 |
|
492 |
void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len) |
493 |
{ |
494 |
if (!len) {
|
495 |
return;
|
496 |
} |
497 |
|
498 |
if (info->sign) {
|
499 |
memset (buf, len << info->shift, 0x00);
|
500 |
} |
501 |
else {
|
502 |
if (info->bits == 8) { |
503 |
memset (buf, len << info->shift, 0x80);
|
504 |
} |
505 |
else {
|
506 |
int i;
|
507 |
uint16_t *p = buf; |
508 |
int shift = info->nchannels - 1; |
509 |
short s = INT16_MAX;
|
510 |
|
511 |
if (info->swap_endian) {
|
512 |
s = bswap16 (s); |
513 |
} |
514 |
|
515 |
for (i = 0; i < len << shift; i++) { |
516 |
p[i] = s; |
517 |
} |
518 |
} |
519 |
} |
520 |
} |
521 |
|
522 |
/*
|
523 |
* Hard voice (capture)
|
524 |
*/
|
525 |
static void audio_pcm_hw_free_resources_in (HWVoiceIn *hw) |
526 |
{ |
527 |
if (hw->conv_buf) {
|
528 |
qemu_free (hw->conv_buf); |
529 |
} |
530 |
hw->conv_buf = NULL;
|
531 |
} |
532 |
|
533 |
static int audio_pcm_hw_alloc_resources_in (HWVoiceIn *hw) |
534 |
{ |
535 |
hw->conv_buf = qemu_mallocz (hw->samples * sizeof (st_sample_t));
|
536 |
if (!hw->conv_buf) {
|
537 |
return -1; |
538 |
} |
539 |
return 0; |
540 |
} |
541 |
|
542 |
static int audio_pcm_hw_init_in (HWVoiceIn *hw, int freq, int nchannels, audfmt_e fmt) |
543 |
{ |
544 |
audio_pcm_hw_fini_in (hw); |
545 |
|
546 |
if (hw->pcm_ops->init_in (hw, freq, nchannels, fmt)) {
|
547 |
memset (hw, 0, audio_state.drv->voice_size_in);
|
548 |
return -1; |
549 |
} |
550 |
LIST_INIT (&hw->sw_head); |
551 |
hw->active = 1;
|
552 |
hw->samples = hw->bufsize >> hw->info.shift; |
553 |
hw->conv = |
554 |
mixeng_conv |
555 |
[nchannels == 2]
|
556 |
[hw->info.sign] |
557 |
[hw->info.swap_endian] |
558 |
[hw->info.bits == 16];
|
559 |
if (audio_pcm_hw_alloc_resources_in (hw)) {
|
560 |
audio_pcm_hw_free_resources_in (hw); |
561 |
return -1; |
562 |
} |
563 |
return 0; |
564 |
} |
565 |
|
566 |
static uint64_t audio_pcm_hw_find_min_in (HWVoiceIn *hw)
|
567 |
{ |
568 |
SWVoiceIn *sw; |
569 |
int m = hw->total_samples_captured;
|
570 |
|
571 |
for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
|
572 |
if (sw->active) {
|
573 |
m = audio_MIN (m, sw->total_hw_samples_acquired); |
574 |
} |
575 |
} |
576 |
return m;
|
577 |
} |
578 |
|
579 |
int audio_pcm_hw_get_live_in (HWVoiceIn *hw)
|
580 |
{ |
581 |
int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw);
|
582 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { |
583 |
dolog ("live=%d hw->samples=%d\n", live, hw->samples);
|
584 |
return 0; |
585 |
} |
586 |
return live;
|
587 |
} |
588 |
|
589 |
/*
|
590 |
* Soft voice (capture)
|
591 |
*/
|
592 |
static void audio_pcm_sw_free_resources_in (SWVoiceIn *sw) |
593 |
{ |
594 |
if (sw->conv_buf) {
|
595 |
qemu_free (sw->conv_buf); |
596 |
} |
597 |
|
598 |
if (sw->rate) {
|
599 |
st_rate_stop (sw->rate); |
600 |
} |
601 |
|
602 |
sw->conv_buf = NULL;
|
603 |
sw->rate = NULL;
|
604 |
} |
605 |
|
606 |
static int audio_pcm_sw_alloc_resources_in (SWVoiceIn *sw) |
607 |
{ |
608 |
int samples = ((int64_t) sw->hw->samples << 32) / sw->ratio; |
609 |
sw->conv_buf = qemu_mallocz (samples * sizeof (st_sample_t));
|
610 |
if (!sw->conv_buf) {
|
611 |
return -1; |
612 |
} |
613 |
|
614 |
sw->rate = st_rate_start (sw->hw->info.freq, sw->info.freq); |
615 |
if (!sw->rate) {
|
616 |
qemu_free (sw->conv_buf); |
617 |
sw->conv_buf = NULL;
|
618 |
return -1; |
619 |
} |
620 |
return 0; |
621 |
} |
622 |
|
623 |
static int audio_pcm_sw_init_in (SWVoiceIn *sw, HWVoiceIn *hw, const char *name, |
624 |
int freq, int nchannels, audfmt_e fmt) |
625 |
{ |
626 |
audio_pcm_init_info (&sw->info, freq, nchannels, fmt, |
627 |
/* None of the cards emulated by QEMU are big-endian
|
628 |
hence following shortcut */
|
629 |
audio_need_to_swap_endian (0));
|
630 |
sw->hw = hw; |
631 |
sw->ratio = ((int64_t) sw->info.freq << 32) / sw->hw->info.freq;
|
632 |
|
633 |
sw->clip = |
634 |
mixeng_clip |
635 |
[nchannels == 2]
|
636 |
[sw->info.sign] |
637 |
[sw->info.swap_endian] |
638 |
[sw->info.bits == 16];
|
639 |
|
640 |
sw->name = qemu_strdup (name); |
641 |
audio_pcm_sw_free_resources_in (sw); |
642 |
return audio_pcm_sw_alloc_resources_in (sw);
|
643 |
} |
644 |
|
645 |
static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw) |
646 |
{ |
647 |
HWVoiceIn *hw = sw->hw; |
648 |
int live = hw->total_samples_captured - sw->total_hw_samples_acquired;
|
649 |
int rpos;
|
650 |
|
651 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { |
652 |
dolog ("live=%d hw->samples=%d\n", live, hw->samples);
|
653 |
return 0; |
654 |
} |
655 |
|
656 |
rpos = hw->wpos - live; |
657 |
if (rpos >= 0) { |
658 |
return rpos;
|
659 |
} |
660 |
else {
|
661 |
return hw->samples + rpos;
|
662 |
} |
663 |
} |
664 |
|
665 |
int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size) |
666 |
{ |
667 |
HWVoiceIn *hw = sw->hw; |
668 |
int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0; |
669 |
st_sample_t *src, *dst = sw->conv_buf; |
670 |
|
671 |
rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples; |
672 |
|
673 |
live = hw->total_samples_captured - sw->total_hw_samples_acquired; |
674 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { |
675 |
dolog ("live_in=%d hw->samples=%d\n", live, hw->samples);
|
676 |
return 0; |
677 |
} |
678 |
|
679 |
samples = size >> sw->info.shift; |
680 |
if (!live) {
|
681 |
return 0; |
682 |
} |
683 |
|
684 |
swlim = (live * sw->ratio) >> 32;
|
685 |
swlim = audio_MIN (swlim, samples); |
686 |
|
687 |
while (swlim) {
|
688 |
src = hw->conv_buf + rpos; |
689 |
isamp = hw->wpos - rpos; |
690 |
/* XXX: <= ? */
|
691 |
if (isamp <= 0) { |
692 |
isamp = hw->samples - rpos; |
693 |
} |
694 |
|
695 |
if (!isamp) {
|
696 |
break;
|
697 |
} |
698 |
osamp = swlim; |
699 |
|
700 |
if (audio_bug (AUDIO_FUNC, osamp < 0)) { |
701 |
dolog ("osamp=%d\n", osamp);
|
702 |
} |
703 |
|
704 |
st_rate_flow (sw->rate, src, dst, &isamp, &osamp); |
705 |
swlim -= osamp; |
706 |
rpos = (rpos + isamp) % hw->samples; |
707 |
dst += osamp; |
708 |
ret += osamp; |
709 |
total += isamp; |
710 |
} |
711 |
|
712 |
sw->clip (buf, sw->conv_buf, ret); |
713 |
sw->total_hw_samples_acquired += total; |
714 |
return ret << sw->info.shift;
|
715 |
} |
716 |
|
717 |
/*
|
718 |
* Hard voice (playback)
|
719 |
*/
|
720 |
static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep) |
721 |
{ |
722 |
SWVoiceOut *sw; |
723 |
int m = INT_MAX;
|
724 |
int nb_live = 0; |
725 |
|
726 |
for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
|
727 |
if (sw->active || !sw->empty) {
|
728 |
m = audio_MIN (m, sw->total_hw_samples_mixed); |
729 |
nb_live += 1;
|
730 |
} |
731 |
} |
732 |
|
733 |
*nb_livep = nb_live; |
734 |
return m;
|
735 |
} |
736 |
|
737 |
static void audio_pcm_hw_free_resources_out (HWVoiceOut *hw) |
738 |
{ |
739 |
if (hw->mix_buf) {
|
740 |
qemu_free (hw->mix_buf); |
741 |
} |
742 |
|
743 |
hw->mix_buf = NULL;
|
744 |
} |
745 |
|
746 |
static int audio_pcm_hw_alloc_resources_out (HWVoiceOut *hw) |
747 |
{ |
748 |
hw->mix_buf = qemu_mallocz (hw->samples * sizeof (st_sample_t));
|
749 |
if (!hw->mix_buf) {
|
750 |
return -1; |
751 |
} |
752 |
|
753 |
return 0; |
754 |
} |
755 |
|
756 |
static int audio_pcm_hw_init_out (HWVoiceOut *hw, int freq, |
757 |
int nchannels, audfmt_e fmt)
|
758 |
{ |
759 |
audio_pcm_hw_fini_out (hw); |
760 |
if (hw->pcm_ops->init_out (hw, freq, nchannels, fmt)) {
|
761 |
memset (hw, 0, audio_state.drv->voice_size_out);
|
762 |
return -1; |
763 |
} |
764 |
|
765 |
LIST_INIT (&hw->sw_head); |
766 |
hw->active = 1;
|
767 |
hw->samples = hw->bufsize >> hw->info.shift; |
768 |
hw->clip = |
769 |
mixeng_clip |
770 |
[nchannels == 2]
|
771 |
[hw->info.sign] |
772 |
[hw->info.swap_endian] |
773 |
[hw->info.bits == 16];
|
774 |
if (audio_pcm_hw_alloc_resources_out (hw)) {
|
775 |
audio_pcm_hw_fini_out (hw); |
776 |
return -1; |
777 |
} |
778 |
return 0; |
779 |
} |
780 |
|
781 |
int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live) |
782 |
{ |
783 |
int smin;
|
784 |
|
785 |
smin = audio_pcm_hw_find_min_out (hw, nb_live); |
786 |
|
787 |
if (!*nb_live) {
|
788 |
return 0; |
789 |
} |
790 |
else {
|
791 |
int live = smin;
|
792 |
|
793 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { |
794 |
dolog ("live=%d hw->samples=%d\n", live, hw->samples);
|
795 |
return 0; |
796 |
} |
797 |
return live;
|
798 |
} |
799 |
} |
800 |
|
801 |
int audio_pcm_hw_get_live_out (HWVoiceOut *hw)
|
802 |
{ |
803 |
int nb_live;
|
804 |
int live;
|
805 |
|
806 |
live = audio_pcm_hw_get_live_out2 (hw, &nb_live); |
807 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { |
808 |
dolog ("live=%d hw->samples=%d\n", live, hw->samples);
|
809 |
return 0; |
810 |
} |
811 |
return live;
|
812 |
} |
813 |
|
814 |
/*
|
815 |
* Soft voice (playback)
|
816 |
*/
|
817 |
static void audio_pcm_sw_free_resources_out (SWVoiceOut *sw) |
818 |
{ |
819 |
if (sw->buf) {
|
820 |
qemu_free (sw->buf); |
821 |
} |
822 |
|
823 |
if (sw->rate) {
|
824 |
st_rate_stop (sw->rate); |
825 |
} |
826 |
|
827 |
sw->buf = NULL;
|
828 |
sw->rate = NULL;
|
829 |
} |
830 |
|
831 |
static int audio_pcm_sw_alloc_resources_out (SWVoiceOut *sw) |
832 |
{ |
833 |
sw->buf = qemu_mallocz (sw->hw->samples * sizeof (st_sample_t));
|
834 |
if (!sw->buf) {
|
835 |
return -1; |
836 |
} |
837 |
|
838 |
sw->rate = st_rate_start (sw->info.freq, sw->hw->info.freq); |
839 |
if (!sw->rate) {
|
840 |
qemu_free (sw->buf); |
841 |
sw->buf = NULL;
|
842 |
return -1; |
843 |
} |
844 |
return 0; |
845 |
} |
846 |
|
847 |
static int audio_pcm_sw_init_out (SWVoiceOut *sw, HWVoiceOut *hw, |
848 |
const char *name, int freq, |
849 |
int nchannels, audfmt_e fmt)
|
850 |
{ |
851 |
audio_pcm_init_info (&sw->info, freq, nchannels, fmt, |
852 |
/* None of the cards emulated by QEMU are big-endian
|
853 |
hence following shortcut */
|
854 |
audio_need_to_swap_endian (0));
|
855 |
sw->hw = hw; |
856 |
sw->empty = 1;
|
857 |
sw->active = 0;
|
858 |
sw->ratio = ((int64_t) sw->hw->info.freq << 32) / sw->info.freq;
|
859 |
sw->total_hw_samples_mixed = 0;
|
860 |
|
861 |
sw->conv = |
862 |
mixeng_conv |
863 |
[nchannels == 2]
|
864 |
[sw->info.sign] |
865 |
[sw->info.swap_endian] |
866 |
[sw->info.bits == 16];
|
867 |
sw->name = qemu_strdup (name); |
868 |
|
869 |
audio_pcm_sw_free_resources_out (sw); |
870 |
return audio_pcm_sw_alloc_resources_out (sw);
|
871 |
} |
872 |
|
873 |
int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size) |
874 |
{ |
875 |
int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck;
|
876 |
int ret = 0, pos = 0, total = 0; |
877 |
|
878 |
if (!sw) {
|
879 |
return size;
|
880 |
} |
881 |
|
882 |
hwsamples = sw->hw->samples; |
883 |
|
884 |
live = sw->total_hw_samples_mixed; |
885 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){ |
886 |
dolog ("live=%d hw->samples=%d\n", live, hwsamples);
|
887 |
return 0; |
888 |
} |
889 |
|
890 |
if (live == hwsamples) {
|
891 |
return 0; |
892 |
} |
893 |
|
894 |
wpos = (sw->hw->rpos + live) % hwsamples; |
895 |
samples = size >> sw->info.shift; |
896 |
|
897 |
dead = hwsamples - live; |
898 |
swlim = ((int64_t) dead << 32) / sw->ratio;
|
899 |
swlim = audio_MIN (swlim, samples); |
900 |
if (swlim) {
|
901 |
sw->conv (sw->buf, buf, swlim, &sw->vol); |
902 |
} |
903 |
|
904 |
while (swlim) {
|
905 |
dead = hwsamples - live; |
906 |
left = hwsamples - wpos; |
907 |
blck = audio_MIN (dead, left); |
908 |
if (!blck) {
|
909 |
break;
|
910 |
} |
911 |
isamp = swlim; |
912 |
osamp = blck; |
913 |
st_rate_flow_mix ( |
914 |
sw->rate, |
915 |
sw->buf + pos, |
916 |
sw->hw->mix_buf + wpos, |
917 |
&isamp, |
918 |
&osamp |
919 |
); |
920 |
ret += isamp; |
921 |
swlim -= isamp; |
922 |
pos += isamp; |
923 |
live += osamp; |
924 |
wpos = (wpos + osamp) % hwsamples; |
925 |
total += osamp; |
926 |
} |
927 |
|
928 |
sw->total_hw_samples_mixed += total; |
929 |
sw->empty = sw->total_hw_samples_mixed == 0;
|
930 |
|
931 |
#ifdef DEBUG_OUT
|
932 |
dolog ( |
933 |
"%s: write size %d ret %d total sw %d, hw %d\n",
|
934 |
sw->name, |
935 |
size >> sw->info.shift, |
936 |
ret, |
937 |
sw->total_hw_samples_mixed, |
938 |
sw->hw->total_samples_played |
939 |
); |
940 |
#endif
|
941 |
|
942 |
return ret << sw->info.shift;
|
943 |
} |
944 |
|
945 |
#ifdef DEBUG_AUDIO
|
946 |
static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info) |
947 |
{ |
948 |
dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n",
|
949 |
cap, info->bits, info->sign, info->freq, info->nchannels); |
950 |
} |
951 |
#endif
|
952 |
|
953 |
#define DAC
|
954 |
#include "audio_template.h" |
955 |
#undef DAC
|
956 |
#include "audio_template.h" |
957 |
|
958 |
int AUD_write (SWVoiceOut *sw, void *buf, int size) |
959 |
{ |
960 |
int bytes;
|
961 |
|
962 |
if (!sw) {
|
963 |
/* XXX: Consider options */
|
964 |
return size;
|
965 |
} |
966 |
|
967 |
if (!sw->hw->enabled) {
|
968 |
dolog ("Writing to disabled voice %s\n", sw->name);
|
969 |
return 0; |
970 |
} |
971 |
|
972 |
bytes = sw->hw->pcm_ops->write (sw, buf, size); |
973 |
return bytes;
|
974 |
} |
975 |
|
976 |
int AUD_read (SWVoiceIn *sw, void *buf, int size) |
977 |
{ |
978 |
int bytes;
|
979 |
|
980 |
if (!sw) {
|
981 |
/* XXX: Consider options */
|
982 |
return size;
|
983 |
} |
984 |
|
985 |
if (!sw->hw->enabled) {
|
986 |
dolog ("Reading from disabled voice %s\n", sw->name);
|
987 |
return 0; |
988 |
} |
989 |
|
990 |
bytes = sw->hw->pcm_ops->read (sw, buf, size); |
991 |
return bytes;
|
992 |
} |
993 |
|
994 |
int AUD_get_buffer_size_out (SWVoiceOut *sw)
|
995 |
{ |
996 |
return sw->hw->bufsize;
|
997 |
} |
998 |
|
999 |
void AUD_set_active_out (SWVoiceOut *sw, int on) |
1000 |
{ |
1001 |
HWVoiceOut *hw; |
1002 |
|
1003 |
if (!sw) {
|
1004 |
return;
|
1005 |
} |
1006 |
|
1007 |
hw = sw->hw; |
1008 |
if (sw->active != on) {
|
1009 |
SWVoiceOut *temp_sw; |
1010 |
|
1011 |
if (on) {
|
1012 |
int total;
|
1013 |
|
1014 |
hw->pending_disable = 0;
|
1015 |
if (!hw->enabled) {
|
1016 |
hw->enabled = 1;
|
1017 |
hw->pcm_ops->ctl_out (hw, VOICE_ENABLE); |
1018 |
} |
1019 |
|
1020 |
if (sw->empty) {
|
1021 |
total = 0;
|
1022 |
} |
1023 |
} |
1024 |
else {
|
1025 |
if (hw->enabled) {
|
1026 |
int nb_active = 0; |
1027 |
|
1028 |
for (temp_sw = hw->sw_head.lh_first; temp_sw;
|
1029 |
temp_sw = temp_sw->entries.le_next) { |
1030 |
nb_active += temp_sw->active != 0;
|
1031 |
} |
1032 |
|
1033 |
hw->pending_disable = nb_active == 1;
|
1034 |
} |
1035 |
} |
1036 |
sw->active = on; |
1037 |
} |
1038 |
} |
1039 |
|
1040 |
void AUD_set_active_in (SWVoiceIn *sw, int on) |
1041 |
{ |
1042 |
HWVoiceIn *hw; |
1043 |
|
1044 |
if (!sw) {
|
1045 |
return;
|
1046 |
} |
1047 |
|
1048 |
hw = sw->hw; |
1049 |
if (sw->active != on) {
|
1050 |
SWVoiceIn *temp_sw; |
1051 |
|
1052 |
if (on) {
|
1053 |
if (!hw->enabled) {
|
1054 |
hw->enabled = 1;
|
1055 |
hw->pcm_ops->ctl_in (hw, VOICE_ENABLE); |
1056 |
} |
1057 |
sw->total_hw_samples_acquired = hw->total_samples_captured; |
1058 |
} |
1059 |
else {
|
1060 |
if (hw->enabled) {
|
1061 |
int nb_active = 0; |
1062 |
|
1063 |
for (temp_sw = hw->sw_head.lh_first; temp_sw;
|
1064 |
temp_sw = temp_sw->entries.le_next) { |
1065 |
nb_active += temp_sw->active != 0;
|
1066 |
} |
1067 |
|
1068 |
if (nb_active == 1) { |
1069 |
hw->enabled = 0;
|
1070 |
hw->pcm_ops->ctl_in (hw, VOICE_DISABLE); |
1071 |
} |
1072 |
} |
1073 |
} |
1074 |
sw->active = on; |
1075 |
} |
1076 |
} |
1077 |
|
1078 |
static int audio_get_avail (SWVoiceIn *sw) |
1079 |
{ |
1080 |
int live;
|
1081 |
|
1082 |
if (!sw) {
|
1083 |
return 0; |
1084 |
} |
1085 |
|
1086 |
live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired; |
1087 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) { |
1088 |
dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
|
1089 |
return 0; |
1090 |
} |
1091 |
|
1092 |
ldebug ( |
1093 |
"%s: get_avail live %d ret %lld\n",
|
1094 |
sw->name, |
1095 |
live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift
|
1096 |
); |
1097 |
|
1098 |
return (((int64_t) live << 32) / sw->ratio) << sw->info.shift; |
1099 |
} |
1100 |
|
1101 |
static int audio_get_free (SWVoiceOut *sw) |
1102 |
{ |
1103 |
int live, dead;
|
1104 |
|
1105 |
if (!sw) {
|
1106 |
return 0; |
1107 |
} |
1108 |
|
1109 |
live = sw->total_hw_samples_mixed; |
1110 |
|
1111 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) { |
1112 |
dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples);
|
1113 |
} |
1114 |
|
1115 |
dead = sw->hw->samples - live; |
1116 |
|
1117 |
#ifdef DEBUG_OUT
|
1118 |
dolog ("%s: get_free live %d dead %d ret %lld\n",
|
1119 |
sw->name, |
1120 |
live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift);
|
1121 |
#endif
|
1122 |
|
1123 |
return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift; |
1124 |
} |
1125 |
|
1126 |
static void audio_run_out (void) |
1127 |
{ |
1128 |
HWVoiceOut *hw = NULL;
|
1129 |
SWVoiceOut *sw; |
1130 |
|
1131 |
while ((hw = audio_pcm_hw_find_any_active_enabled_out (hw))) {
|
1132 |
int played;
|
1133 |
int live, free, nb_live;
|
1134 |
|
1135 |
live = audio_pcm_hw_get_live_out2 (hw, &nb_live); |
1136 |
if (!nb_live) {
|
1137 |
live = 0;
|
1138 |
} |
1139 |
if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { |
1140 |
dolog ("live=%d hw->samples=%d\n", live, hw->samples);
|
1141 |
} |
1142 |
|
1143 |
if (hw->pending_disable && !nb_live) {
|
1144 |
#ifdef DEBUG_OUT
|
1145 |
dolog ("Disabling voice\n");
|
1146 |
#endif
|
1147 |
hw->enabled = 0;
|
1148 |
hw->pending_disable = 0;
|
1149 |
hw->pcm_ops->ctl_out (hw, VOICE_DISABLE); |
1150 |
continue;
|
1151 |
} |
1152 |
|
1153 |
if (!live) {
|
1154 |
for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
|
1155 |
if (sw->active) {
|
1156 |
free = audio_get_free (sw); |
1157 |
if (free > 0) { |
1158 |
sw->callback.fn (sw->callback.opaque, free); |
1159 |
} |
1160 |
} |
1161 |
} |
1162 |
continue;
|
1163 |
} |
1164 |
|
1165 |
played = hw->pcm_ops->run_out (hw); |
1166 |
if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) {
|
1167 |
dolog ("hw->rpos=%d hw->samples=%d played=%d\n",
|
1168 |
hw->rpos, hw->samples, played); |
1169 |
hw->rpos = 0;
|
1170 |
} |
1171 |
|
1172 |
#ifdef DEBUG_OUT
|
1173 |
dolog ("played = %d total %d\n", played, hw->total_samples_played);
|
1174 |
#endif
|
1175 |
|
1176 |
if (played) {
|
1177 |
hw->ts_helper += played; |
1178 |
} |
1179 |
|
1180 |
for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
|
1181 |
again:
|
1182 |
if (!sw->active && sw->empty) {
|
1183 |
continue;
|
1184 |
} |
1185 |
|
1186 |
if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) {
|
1187 |
dolog ("played=%d sw->total_hw_samples_mixed=%d\n",
|
1188 |
played, sw->total_hw_samples_mixed); |
1189 |
played = sw->total_hw_samples_mixed; |
1190 |
} |
1191 |
|
1192 |
sw->total_hw_samples_mixed -= played; |
1193 |
|
1194 |
if (!sw->total_hw_samples_mixed) {
|
1195 |
sw->empty = 1;
|
1196 |
|
1197 |
if (!sw->active && !sw->callback.fn) {
|
1198 |
SWVoiceOut *temp = sw->entries.le_next; |
1199 |
|
1200 |
#ifdef DEBUG_PLIVE
|
1201 |
dolog ("Finishing with old voice\n");
|
1202 |
#endif
|
1203 |
AUD_close_out (sw); |
1204 |
sw = temp; |
1205 |
if (sw) {
|
1206 |
goto again;
|
1207 |
} |
1208 |
else {
|
1209 |
break;
|
1210 |
} |
1211 |
} |
1212 |
} |
1213 |
|
1214 |
if (sw->active) {
|
1215 |
free = audio_get_free (sw); |
1216 |
if (free > 0) { |
1217 |
sw->callback.fn (sw->callback.opaque, free); |
1218 |
} |
1219 |
} |
1220 |
} |
1221 |
} |
1222 |
} |
1223 |
|
1224 |
static void audio_run_in (void) |
1225 |
{ |
1226 |
HWVoiceIn *hw = NULL;
|
1227 |
|
1228 |
while ((hw = audio_pcm_hw_find_any_active_enabled_in (hw))) {
|
1229 |
SWVoiceIn *sw; |
1230 |
int captured, min;
|
1231 |
|
1232 |
captured = hw->pcm_ops->run_in (hw); |
1233 |
|
1234 |
min = audio_pcm_hw_find_min_in (hw); |
1235 |
hw->total_samples_captured += captured - min; |
1236 |
hw->ts_helper += captured; |
1237 |
|
1238 |
for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
|
1239 |
sw->total_hw_samples_acquired -= min; |
1240 |
|
1241 |
if (sw->active) {
|
1242 |
int avail;
|
1243 |
|
1244 |
avail = audio_get_avail (sw); |
1245 |
if (avail > 0) { |
1246 |
sw->callback.fn (sw->callback.opaque, avail); |
1247 |
} |
1248 |
} |
1249 |
} |
1250 |
} |
1251 |
} |
1252 |
|
1253 |
static struct audio_option audio_options[] = { |
1254 |
/* DAC */
|
1255 |
{"DAC_FIXED_SETTINGS", AUD_OPT_BOOL, &audio_state.fixed_settings_out,
|
1256 |
"Use fixed settings for host DAC", NULL, 0}, |
1257 |
|
1258 |
{"DAC_FIXED_FREQ", AUD_OPT_INT, &audio_state.fixed_freq_out,
|
1259 |
"Frequency for fixed host DAC", NULL, 0}, |
1260 |
|
1261 |
{"DAC_FIXED_FMT", AUD_OPT_FMT, &audio_state.fixed_fmt_out,
|
1262 |
"Format for fixed host DAC", NULL, 0}, |
1263 |
|
1264 |
{"DAC_FIXED_CHANNELS", AUD_OPT_INT, &audio_state.fixed_channels_out,
|
1265 |
"Number of channels for fixed DAC (1 - mono, 2 - stereo)", NULL, 0}, |
1266 |
|
1267 |
{"DAC_VOICES", AUD_OPT_INT, &audio_state.nb_hw_voices_out,
|
1268 |
"Number of voices for DAC", NULL, 0}, |
1269 |
|
1270 |
/* ADC */
|
1271 |
{"ADC_FIXED_SETTINGS", AUD_OPT_BOOL, &audio_state.fixed_settings_out,
|
1272 |
"Use fixed settings for host ADC", NULL, 0}, |
1273 |
|
1274 |
{"ADC_FIXED_FREQ", AUD_OPT_INT, &audio_state.fixed_freq_out,
|
1275 |
"Frequency for fixed ADC", NULL, 0}, |
1276 |
|
1277 |
{"ADC_FIXED_FMT", AUD_OPT_FMT, &audio_state.fixed_fmt_out,
|
1278 |
"Format for fixed ADC", NULL, 0}, |
1279 |
|
1280 |
{"ADC_FIXED_CHANNELS", AUD_OPT_INT, &audio_state.fixed_channels_in,
|
1281 |
"Number of channels for fixed ADC (1 - mono, 2 - stereo)", NULL, 0}, |
1282 |
|
1283 |
{"ADC_VOICES", AUD_OPT_INT, &audio_state.nb_hw_voices_out,
|
1284 |
"Number of voices for ADC", NULL, 0}, |
1285 |
|
1286 |
/* Misc */
|
1287 |
{"TIMER_PERIOD", AUD_OPT_INT, &audio_state.period.usec,
|
1288 |
"Timer period in microseconds (0 - try lowest possible)", NULL, 0}, |
1289 |
|
1290 |
{"PLIVE", AUD_OPT_BOOL, &audio_state.plive,
|
1291 |
"(undocumented)", NULL, 0}, |
1292 |
|
1293 |
{NULL, 0, NULL, NULL, NULL, 0} |
1294 |
}; |
1295 |
|
1296 |
void AUD_help (void) |
1297 |
{ |
1298 |
size_t i; |
1299 |
|
1300 |
audio_process_options ("AUDIO", audio_options);
|
1301 |
for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) { |
1302 |
struct audio_driver *d = drvtab[i];
|
1303 |
if (d->options) {
|
1304 |
audio_process_options (d->name, d->options); |
1305 |
} |
1306 |
} |
1307 |
|
1308 |
printf ("Audio options:\n");
|
1309 |
audio_print_options ("AUDIO", audio_options);
|
1310 |
printf ("\n");
|
1311 |
|
1312 |
printf ("Available drivers:\n");
|
1313 |
|
1314 |
for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) { |
1315 |
struct audio_driver *d = drvtab[i];
|
1316 |
|
1317 |
printf ("Name: %s\n", d->name);
|
1318 |
printf ("Description: %s\n", d->descr);
|
1319 |
|
1320 |
switch (d->max_voices_out) {
|
1321 |
case 0: |
1322 |
printf ("Does not support DAC\n");
|
1323 |
break;
|
1324 |
case 1: |
1325 |
printf ("One DAC voice\n");
|
1326 |
break;
|
1327 |
case INT_MAX:
|
1328 |
printf ("Theoretically supports many DAC voices\n");
|
1329 |
break;
|
1330 |
default:
|
1331 |
printf ("Theoretically supports upto %d DAC voices\n",
|
1332 |
d->max_voices_out); |
1333 |
break;
|
1334 |
} |
1335 |
|
1336 |
switch (d->max_voices_in) {
|
1337 |
case 0: |
1338 |
printf ("Does not support ADC\n");
|
1339 |
break;
|
1340 |
case 1: |
1341 |
printf ("One ADC voice\n");
|
1342 |
break;
|
1343 |
case INT_MAX:
|
1344 |
printf ("Theoretically supports many ADC voices\n");
|
1345 |
break;
|
1346 |
default:
|
1347 |
printf ("Theoretically supports upto %d ADC voices\n",
|
1348 |
d->max_voices_in); |
1349 |
break;
|
1350 |
} |
1351 |
|
1352 |
if (d->options) {
|
1353 |
printf ("Options:\n");
|
1354 |
audio_print_options (d->name, d->options); |
1355 |
} |
1356 |
else {
|
1357 |
printf ("No options\n");
|
1358 |
} |
1359 |
printf ("\n");
|
1360 |
} |
1361 |
|
1362 |
printf ( |
1363 |
"Options are settable through environment variables.\n"
|
1364 |
"Example:\n"
|
1365 |
#ifdef _WIN32
|
1366 |
" set QEMU_AUDIO_DRV=wav\n"
|
1367 |
" set QEMU_WAV_PATH=c:/tune.wav\n"
|
1368 |
#else
|
1369 |
" export QEMU_AUDIO_DRV=wav\n"
|
1370 |
" export QEMU_WAV_PATH=$HOME/tune.wav\n"
|
1371 |
"(for csh replace export with setenv in the above)\n"
|
1372 |
#endif
|
1373 |
" qemu ...\n\n"
|
1374 |
); |
1375 |
} |
1376 |
|
1377 |
void audio_timer (void *opaque) |
1378 |
{ |
1379 |
AudioState *s = opaque; |
1380 |
|
1381 |
audio_run_out (); |
1382 |
audio_run_in (); |
1383 |
|
1384 |
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + s->period.ticks); |
1385 |
} |
1386 |
|
1387 |
static int audio_driver_init (struct audio_driver *drv) |
1388 |
{ |
1389 |
if (drv->options) {
|
1390 |
audio_process_options (drv->name, drv->options); |
1391 |
} |
1392 |
audio_state.opaque = drv->init (); |
1393 |
|
1394 |
if (audio_state.opaque) {
|
1395 |
int i;
|
1396 |
HWVoiceOut *hwo; |
1397 |
HWVoiceIn *hwi; |
1398 |
|
1399 |
if (audio_state.nb_hw_voices_out > drv->max_voices_out) {
|
1400 |
if (!drv->max_voices_out) {
|
1401 |
dolog ("`%s' does not support DAC\n", drv->name);
|
1402 |
} |
1403 |
else {
|
1404 |
dolog ( |
1405 |
"`%s' does not support %d multiple DAC voicess\n"
|
1406 |
"Resetting to %d\n",
|
1407 |
drv->name, |
1408 |
audio_state.nb_hw_voices_out, |
1409 |
drv->max_voices_out |
1410 |
); |
1411 |
} |
1412 |
audio_state.nb_hw_voices_out = drv->max_voices_out; |
1413 |
} |
1414 |
|
1415 |
LIST_INIT (&hw_head_out); |
1416 |
hwo = qemu_mallocz (audio_state.nb_hw_voices_out * drv->voice_size_out); |
1417 |
if (!hwo) {
|
1418 |
dolog ( |
1419 |
"Not enough memory for %d `%s' DAC voices (each %d bytes)\n",
|
1420 |
audio_state.nb_hw_voices_out, |
1421 |
drv->name, |
1422 |
drv->voice_size_out |
1423 |
); |
1424 |
drv->fini (audio_state.opaque); |
1425 |
return -1; |
1426 |
} |
1427 |
|
1428 |
for (i = 0; i < audio_state.nb_hw_voices_out; ++i) { |
1429 |
LIST_INSERT_HEAD (&hw_head_out, hwo, entries); |
1430 |
hwo = advance (hwo, drv->voice_size_out); |
1431 |
} |
1432 |
|
1433 |
if (!drv->voice_size_in && drv->max_voices_in) {
|
1434 |
ldebug ("warning: No ADC voice size defined for `%s'\n",
|
1435 |
drv->name); |
1436 |
drv->max_voices_in = 0;
|
1437 |
} |
1438 |
|
1439 |
if (!drv->voice_size_out && drv->max_voices_out) {
|
1440 |
ldebug ("warning: No DAC voice size defined for `%s'\n",
|
1441 |
drv->name); |
1442 |
} |
1443 |
|
1444 |
if (drv->voice_size_in && !drv->max_voices_in) {
|
1445 |
ldebug ("warning: ADC voice size is %d for ADC less driver `%s'\n",
|
1446 |
drv->voice_size_out, drv->name); |
1447 |
} |
1448 |
|
1449 |
if (drv->voice_size_out && !drv->max_voices_out) {
|
1450 |
ldebug ("warning: DAC voice size is %d for DAC less driver `%s'\n",
|
1451 |
drv->voice_size_in, drv->name); |
1452 |
} |
1453 |
|
1454 |
if (audio_state.nb_hw_voices_in > drv->max_voices_in) {
|
1455 |
if (!drv->max_voices_in) {
|
1456 |
ldebug ("`%s' does not support ADC\n", drv->name);
|
1457 |
} |
1458 |
else {
|
1459 |
dolog ( |
1460 |
"`%s' does not support %d multiple ADC voices\n"
|
1461 |
"Resetting to %d\n",
|
1462 |
drv->name, |
1463 |
audio_state.nb_hw_voices_in, |
1464 |
drv->max_voices_in |
1465 |
); |
1466 |
} |
1467 |
audio_state.nb_hw_voices_in = drv->max_voices_in; |
1468 |
} |
1469 |
|
1470 |
LIST_INIT (&hw_head_in); |
1471 |
hwi = qemu_mallocz (audio_state.nb_hw_voices_in * drv->voice_size_in); |
1472 |
if (!hwi) {
|
1473 |
dolog ( |
1474 |
"Not enough memory for %d `%s' ADC voices (each %d bytes)\n",
|
1475 |
audio_state.nb_hw_voices_in, |
1476 |
drv->name, |
1477 |
drv->voice_size_in |
1478 |
); |
1479 |
qemu_free (hwo); |
1480 |
drv->fini (audio_state.opaque); |
1481 |
return -1; |
1482 |
} |
1483 |
|
1484 |
for (i = 0; i < audio_state.nb_hw_voices_in; ++i) { |
1485 |
LIST_INSERT_HEAD (&hw_head_in, hwi, entries); |
1486 |
hwi = advance (hwi, drv->voice_size_in); |
1487 |
} |
1488 |
|
1489 |
audio_state.drv = drv; |
1490 |
return 0; |
1491 |
} |
1492 |
else {
|
1493 |
dolog ("Could not init `%s' audio driver\n", drv->name);
|
1494 |
return -1; |
1495 |
} |
1496 |
} |
1497 |
|
1498 |
static void audio_vm_stop_handler (void *opaque, int reason) |
1499 |
{ |
1500 |
HWVoiceOut *hwo = NULL;
|
1501 |
HWVoiceIn *hwi = NULL;
|
1502 |
int op = reason ? VOICE_ENABLE : VOICE_DISABLE;
|
1503 |
|
1504 |
(void) opaque;
|
1505 |
while ((hwo = audio_pcm_hw_find_any_out (hwo))) {
|
1506 |
if (!hwo->pcm_ops) {
|
1507 |
continue;
|
1508 |
} |
1509 |
|
1510 |
if (hwo->enabled != reason) {
|
1511 |
hwo->pcm_ops->ctl_out (hwo, op); |
1512 |
} |
1513 |
} |
1514 |
|
1515 |
while ((hwi = audio_pcm_hw_find_any_in (hwi))) {
|
1516 |
if (!hwi->pcm_ops) {
|
1517 |
continue;
|
1518 |
} |
1519 |
|
1520 |
if (hwi->enabled != reason) {
|
1521 |
hwi->pcm_ops->ctl_in (hwi, op); |
1522 |
} |
1523 |
} |
1524 |
} |
1525 |
|
1526 |
static void audio_atexit (void) |
1527 |
{ |
1528 |
HWVoiceOut *hwo = NULL;
|
1529 |
HWVoiceIn *hwi = NULL;
|
1530 |
|
1531 |
while ((hwo = audio_pcm_hw_find_any_out (hwo))) {
|
1532 |
if (!hwo->pcm_ops) {
|
1533 |
continue;
|
1534 |
} |
1535 |
|
1536 |
if (hwo->enabled) {
|
1537 |
hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE); |
1538 |
} |
1539 |
hwo->pcm_ops->fini_out (hwo); |
1540 |
} |
1541 |
|
1542 |
while ((hwi = audio_pcm_hw_find_any_in (hwi))) {
|
1543 |
if (!hwi->pcm_ops) {
|
1544 |
continue;
|
1545 |
} |
1546 |
|
1547 |
if (hwi->enabled) {
|
1548 |
hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE); |
1549 |
} |
1550 |
hwi->pcm_ops->fini_in (hwi); |
1551 |
} |
1552 |
audio_state.drv->fini (audio_state.opaque); |
1553 |
} |
1554 |
|
1555 |
static void audio_save (QEMUFile *f, void *opaque) |
1556 |
{ |
1557 |
(void) f;
|
1558 |
(void) opaque;
|
1559 |
} |
1560 |
|
1561 |
static int audio_load (QEMUFile *f, void *opaque, int version_id) |
1562 |
{ |
1563 |
(void) f;
|
1564 |
(void) opaque;
|
1565 |
|
1566 |
if (version_id != 1) { |
1567 |
return -EINVAL;
|
1568 |
} |
1569 |
|
1570 |
return 0; |
1571 |
} |
1572 |
|
1573 |
void AUD_init (void) |
1574 |
{ |
1575 |
size_t i; |
1576 |
int done = 0; |
1577 |
const char *drvname; |
1578 |
AudioState *s = &audio_state; |
1579 |
|
1580 |
audio_process_options ("AUDIO", audio_options);
|
1581 |
|
1582 |
if (s->nb_hw_voices_out <= 0) { |
1583 |
dolog ("Bogus number of DAC voices %d\n",
|
1584 |
s->nb_hw_voices_out); |
1585 |
s->nb_hw_voices_out = 1;
|
1586 |
} |
1587 |
|
1588 |
if (s->nb_hw_voices_in <= 0) { |
1589 |
dolog ("Bogus number of ADC voices %d\n",
|
1590 |
s->nb_hw_voices_in); |
1591 |
s->nb_hw_voices_in = 1;
|
1592 |
} |
1593 |
|
1594 |
{ |
1595 |
int def;
|
1596 |
drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def); |
1597 |
} |
1598 |
|
1599 |
s->ts = qemu_new_timer (vm_clock, audio_timer, s); |
1600 |
if (!s->ts) {
|
1601 |
dolog ("Can not create audio timer\n");
|
1602 |
return;
|
1603 |
} |
1604 |
|
1605 |
if (drvname) {
|
1606 |
int found = 0; |
1607 |
|
1608 |
for (i = 0; i < sizeof (drvtab) / sizeof (drvtab[0]); i++) { |
1609 |
if (!strcmp (drvname, drvtab[i]->name)) {
|
1610 |
done = !audio_driver_init (drvtab[i]); |
1611 |
found = 1;
|
1612 |
break;
|
1613 |
} |
1614 |
} |
1615 |
|
1616 |
if (!found) {
|
1617 |
dolog ("Unknown audio driver `%s'\n", drvname);
|
1618 |
dolog ("Run with -audio-help to list available drivers\n");
|
1619 |
} |
1620 |
} |
1621 |
|
1622 |
qemu_add_vm_stop_handler (audio_vm_stop_handler, NULL);
|
1623 |
atexit (audio_atexit); |
1624 |
|
1625 |
if (!done) {
|
1626 |
for (i = 0; !done && i < sizeof (drvtab) / sizeof (drvtab[0]); i++) { |
1627 |
if (drvtab[i]->can_be_default) {
|
1628 |
done = !audio_driver_init (drvtab[i]); |
1629 |
} |
1630 |
} |
1631 |
} |
1632 |
|
1633 |
register_savevm ("audio", 0, 1, audio_save, audio_load, NULL); |
1634 |
if (!done) {
|
1635 |
if (audio_driver_init (&no_audio_driver)) {
|
1636 |
dolog ("Can not initialize audio subsystem\n");
|
1637 |
} |
1638 |
else {
|
1639 |
dolog ("warning: using timer based audio emulation\n");
|
1640 |
} |
1641 |
} |
1642 |
|
1643 |
if (s->period.usec <= 0) { |
1644 |
if (s->period.usec < 0) { |
1645 |
dolog ("warning: timer period is negative - %d treating as zero\n",
|
1646 |
s->period.usec); |
1647 |
} |
1648 |
s->period.ticks = 1;
|
1649 |
} |
1650 |
else {
|
1651 |
s->period.ticks = (ticks_per_sec * s->period.usec) / 1000000;
|
1652 |
} |
1653 |
|
1654 |
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + s->period.ticks); |
1655 |
} |