diff options
Diffstat (limited to 'qemu/audio/audio.c')
| -rw-r--r-- | qemu/audio/audio.c | 2057 |
1 files changed, 0 insertions, 2057 deletions
diff --git a/qemu/audio/audio.c b/qemu/audio/audio.c deleted file mode 100644 index e60c124de..000000000 --- a/qemu/audio/audio.c +++ /dev/null @@ -1,2057 +0,0 @@ -/* - * QEMU Audio subsystem - * - * Copyright (c) 2003-2005 Vassili Karpov (malc) - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ -#include "qemu/osdep.h" -#include "hw/hw.h" -#include "audio.h" -#include "monitor/monitor.h" -#include "qemu/timer.h" -#include "sysemu/sysemu.h" -#include "qemu/cutils.h" - -#define AUDIO_CAP "audio" -#include "audio_int.h" - -/* #define DEBUG_LIVE */ -/* #define DEBUG_OUT */ -/* #define DEBUG_CAPTURE */ -/* #define DEBUG_POLL */ - -#define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown" - - -/* Order of CONFIG_AUDIO_DRIVERS is import. - The 1st one is the one used by default, that is the reason - that we generate the list. -*/ -static struct audio_driver *drvtab[] = { -#ifdef CONFIG_SPICE - &spice_audio_driver, -#endif - CONFIG_AUDIO_DRIVERS - &no_audio_driver, - &wav_audio_driver -}; - -struct fixed_settings { - int enabled; - int nb_voices; - int greedy; - struct audsettings settings; -}; - -static struct { - struct fixed_settings fixed_out; - struct fixed_settings fixed_in; - union { - int hertz; - int64_t ticks; - } period; - int try_poll_in; - int try_poll_out; -} conf = { - .fixed_out = { /* DAC fixed settings */ - .enabled = 1, - .nb_voices = 1, - .greedy = 1, - .settings = { - .freq = 44100, - .nchannels = 2, - .fmt = AUD_FMT_S16, - .endianness = AUDIO_HOST_ENDIANNESS, - } - }, - - .fixed_in = { /* ADC fixed settings */ - .enabled = 1, - .nb_voices = 1, - .greedy = 1, - .settings = { - .freq = 44100, - .nchannels = 2, - .fmt = AUD_FMT_S16, - .endianness = AUDIO_HOST_ENDIANNESS, - } - }, - - .period = { .hertz = 100 }, - .try_poll_in = 1, - .try_poll_out = 1, -}; - -static AudioState glob_audio_state; - -const struct mixeng_volume nominal_volume = { - .mute = 0, -#ifdef FLOAT_MIXENG - .r = 1.0, - .l = 1.0, -#else - .r = 1ULL << 32, - .l = 1ULL << 32, -#endif -}; - -#ifdef AUDIO_IS_FLAWLESS_AND_NO_CHECKS_ARE_REQURIED -#error No its not -#else -static void audio_print_options (const char *prefix, - struct audio_option *opt); - -int audio_bug (const char *funcname, int cond) -{ - if (cond) { - static int shown; - - AUD_log (NULL, "A bug was just triggered in %s\n", funcname); - if (!shown) { - struct audio_driver *d; - - shown = 1; - AUD_log (NULL, "Save all your work and restart without audio\n"); - AUD_log (NULL, "Please send bug report to av1474@comtv.ru\n"); - AUD_log (NULL, "I am sorry\n"); - d = glob_audio_state.drv; - if (d) { - audio_print_options (d->name, d->options); - } - } - AUD_log (NULL, "Context:\n"); - -#if defined AUDIO_BREAKPOINT_ON_BUG -# if defined HOST_I386 -# if defined __GNUC__ - __asm__ ("int3"); -# elif defined _MSC_VER - _asm _emit 0xcc; -# else - abort (); -# endif -# else - abort (); -# endif -#endif - } - - return cond; -} -#endif - -static inline int audio_bits_to_index (int bits) -{ - switch (bits) { - case 8: - return 0; - - case 16: - return 1; - - case 32: - return 2; - - default: - audio_bug ("bits_to_index", 1); - AUD_log (NULL, "invalid bits %d\n", bits); - return 0; - } -} - -void *audio_calloc (const char *funcname, int nmemb, size_t size) -{ - int cond; - size_t len; - - len = nmemb * size; - cond = !nmemb || !size; - cond |= nmemb < 0; - cond |= len < size; - - if (audio_bug ("audio_calloc", cond)) { - AUD_log (NULL, "%s passed invalid arguments to audio_calloc\n", - funcname); - AUD_log (NULL, "nmemb=%d size=%zu (len=%zu)\n", nmemb, size, len); - return NULL; - } - - return g_malloc0 (len); -} - -static char *audio_alloc_prefix (const char *s) -{ - const char qemu_prefix[] = "QEMU_"; - size_t len, i; - char *r, *u; - - if (!s) { - return NULL; - } - - len = strlen (s); - r = g_malloc (len + sizeof (qemu_prefix)); - - u = r + sizeof (qemu_prefix) - 1; - - pstrcpy (r, len + sizeof (qemu_prefix), qemu_prefix); - pstrcat (r, len + sizeof (qemu_prefix), s); - - for (i = 0; i < len; ++i) { - u[i] = qemu_toupper(u[i]); - } - - return r; -} - -static const char *audio_audfmt_to_string (audfmt_e fmt) -{ - switch (fmt) { - case AUD_FMT_U8: - return "U8"; - - case AUD_FMT_U16: - return "U16"; - - case AUD_FMT_S8: - return "S8"; - - case AUD_FMT_S16: - return "S16"; - - case AUD_FMT_U32: - return "U32"; - - case AUD_FMT_S32: - return "S32"; - } - - dolog ("Bogus audfmt %d returning S16\n", fmt); - return "S16"; -} - -static audfmt_e audio_string_to_audfmt (const char *s, audfmt_e defval, - int *defaultp) -{ - if (!strcasecmp (s, "u8")) { - *defaultp = 0; - return AUD_FMT_U8; - } - else if (!strcasecmp (s, "u16")) { - *defaultp = 0; - return AUD_FMT_U16; - } - else if (!strcasecmp (s, "u32")) { - *defaultp = 0; - return AUD_FMT_U32; - } - else if (!strcasecmp (s, "s8")) { - *defaultp = 0; - return AUD_FMT_S8; - } - else if (!strcasecmp (s, "s16")) { - *defaultp = 0; - return AUD_FMT_S16; - } - else if (!strcasecmp (s, "s32")) { - *defaultp = 0; - return AUD_FMT_S32; - } - else { - dolog ("Bogus audio format `%s' using %s\n", - s, audio_audfmt_to_string (defval)); - *defaultp = 1; - return defval; - } -} - -static audfmt_e audio_get_conf_fmt (const char *envname, - audfmt_e defval, - int *defaultp) -{ - const char *var = getenv (envname); - if (!var) { - *defaultp = 1; - return defval; - } - return audio_string_to_audfmt (var, defval, defaultp); -} - -static int audio_get_conf_int (const char *key, int defval, int *defaultp) -{ - int val; - char *strval; - - strval = getenv (key); - if (strval) { - *defaultp = 0; - val = atoi (strval); - return val; - } - else { - *defaultp = 1; - return defval; - } -} - -static const char *audio_get_conf_str (const char *key, - const char *defval, - int *defaultp) -{ - const char *val = getenv (key); - if (!val) { - *defaultp = 1; - return defval; - } - else { - *defaultp = 0; - return val; - } -} - -void AUD_vlog (const char *cap, const char *fmt, va_list ap) -{ - if (cap) { - fprintf(stderr, "%s: ", cap); - } - - vfprintf(stderr, fmt, ap); -} - -void AUD_log (const char *cap, const char *fmt, ...) -{ - va_list ap; - - va_start (ap, fmt); - AUD_vlog (cap, fmt, ap); - va_end (ap); -} - -static void audio_print_options (const char *prefix, - struct audio_option *opt) -{ - char *uprefix; - - if (!prefix) { - dolog ("No prefix specified\n"); - return; - } - - if (!opt) { - dolog ("No options\n"); - return; - } - - uprefix = audio_alloc_prefix (prefix); - - for (; opt->name; opt++) { - const char *state = "default"; - printf (" %s_%s: ", uprefix, opt->name); - - if (opt->overriddenp && *opt->overriddenp) { - state = "current"; - } - - switch (opt->tag) { - case AUD_OPT_BOOL: - { - int *intp = opt->valp; - printf ("boolean, %s = %d\n", state, *intp ? 1 : 0); - } - break; - - case AUD_OPT_INT: - { - int *intp = opt->valp; - printf ("integer, %s = %d\n", state, *intp); - } - break; - - case AUD_OPT_FMT: - { - audfmt_e *fmtp = opt->valp; - printf ( - "format, %s = %s, (one of: U8 S8 U16 S16 U32 S32)\n", - state, - audio_audfmt_to_string (*fmtp) - ); - } - break; - - case AUD_OPT_STR: - { - const char **strp = opt->valp; - printf ("string, %s = %s\n", - state, - *strp ? *strp : "(not set)"); - } - break; - - default: - printf ("???\n"); - dolog ("Bad value tag for option %s_%s %d\n", - uprefix, opt->name, opt->tag); - break; - } - printf (" %s\n", opt->descr); - } - - g_free (uprefix); -} - -static void audio_process_options (const char *prefix, - struct audio_option *opt) -{ - char *optname; - const char qemu_prefix[] = "QEMU_"; - size_t preflen, optlen; - - if (audio_bug (AUDIO_FUNC, !prefix)) { - dolog ("prefix = NULL\n"); - return; - } - - if (audio_bug (AUDIO_FUNC, !opt)) { - dolog ("opt = NULL\n"); - return; - } - - preflen = strlen (prefix); - - for (; opt->name; opt++) { - size_t len, i; - int def; - - if (!opt->valp) { - dolog ("Option value pointer for `%s' is not set\n", - opt->name); - continue; - } - - len = strlen (opt->name); - /* len of opt->name + len of prefix + size of qemu_prefix - * (includes trailing zero) + zero + underscore (on behalf of - * sizeof) */ - optlen = len + preflen + sizeof (qemu_prefix) + 1; - optname = g_malloc (optlen); - - pstrcpy (optname, optlen, qemu_prefix); - - /* copy while upper-casing, including trailing zero */ - for (i = 0; i <= preflen; ++i) { - optname[i + sizeof (qemu_prefix) - 1] = qemu_toupper(prefix[i]); - } - pstrcat (optname, optlen, "_"); - pstrcat (optname, optlen, opt->name); - - def = 1; - switch (opt->tag) { - case AUD_OPT_BOOL: - case AUD_OPT_INT: - { - int *intp = opt->valp; - *intp = audio_get_conf_int (optname, *intp, &def); - } - break; - - case AUD_OPT_FMT: - { - audfmt_e *fmtp = opt->valp; - *fmtp = audio_get_conf_fmt (optname, *fmtp, &def); - } - break; - - case AUD_OPT_STR: - { - const char **strp = opt->valp; - *strp = audio_get_conf_str (optname, *strp, &def); - } - break; - - default: - dolog ("Bad value tag for option `%s' - %d\n", - optname, opt->tag); - break; - } - - if (!opt->overriddenp) { - opt->overriddenp = &opt->overridden; - } - *opt->overriddenp = !def; - g_free (optname); - } -} - -static void audio_print_settings (struct audsettings *as) -{ - dolog ("frequency=%d nchannels=%d fmt=", as->freq, as->nchannels); - - switch (as->fmt) { - case AUD_FMT_S8: - AUD_log (NULL, "S8"); - break; - case AUD_FMT_U8: - AUD_log (NULL, "U8"); - break; - case AUD_FMT_S16: - AUD_log (NULL, "S16"); - break; - case AUD_FMT_U16: - AUD_log (NULL, "U16"); - break; - case AUD_FMT_S32: - AUD_log (NULL, "S32"); - break; - case AUD_FMT_U32: - AUD_log (NULL, "U32"); - break; - default: - AUD_log (NULL, "invalid(%d)", as->fmt); - break; - } - - AUD_log (NULL, " endianness="); - switch (as->endianness) { - case 0: - AUD_log (NULL, "little"); - break; - case 1: - AUD_log (NULL, "big"); - break; - default: - AUD_log (NULL, "invalid"); - break; - } - AUD_log (NULL, "\n"); -} - -static int audio_validate_settings (struct audsettings *as) -{ - int invalid; - - invalid = as->nchannels != 1 && as->nchannels != 2; - invalid |= as->endianness != 0 && as->endianness != 1; - - switch (as->fmt) { - case AUD_FMT_S8: - case AUD_FMT_U8: - case AUD_FMT_S16: - case AUD_FMT_U16: - case AUD_FMT_S32: - case AUD_FMT_U32: - break; - default: - invalid = 1; - break; - } - - invalid |= as->freq <= 0; - return invalid ? -1 : 0; -} - -static int audio_pcm_info_eq (struct audio_pcm_info *info, struct audsettings *as) -{ - int bits = 8, sign = 0; - - switch (as->fmt) { - case AUD_FMT_S8: - sign = 1; - /* fall through */ - case AUD_FMT_U8: - break; - - case AUD_FMT_S16: - sign = 1; - /* fall through */ - case AUD_FMT_U16: - bits = 16; - break; - - case AUD_FMT_S32: - sign = 1; - /* fall through */ - case AUD_FMT_U32: - bits = 32; - break; - } - return info->freq == as->freq - && info->nchannels == as->nchannels - && info->sign == sign - && info->bits == bits - && info->swap_endianness == (as->endianness != AUDIO_HOST_ENDIANNESS); -} - -void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as) -{ - int bits = 8, sign = 0, shift = 0; - - switch (as->fmt) { - case AUD_FMT_S8: - sign = 1; - case AUD_FMT_U8: - break; - - case AUD_FMT_S16: - sign = 1; - case AUD_FMT_U16: - bits = 16; - shift = 1; - break; - - case AUD_FMT_S32: - sign = 1; - case AUD_FMT_U32: - bits = 32; - shift = 2; - break; - } - - info->freq = as->freq; - info->bits = bits; - info->sign = sign; - info->nchannels = as->nchannels; - info->shift = (as->nchannels == 2) + shift; - info->align = (1 << info->shift) - 1; - info->bytes_per_second = info->freq << info->shift; - info->swap_endianness = (as->endianness != AUDIO_HOST_ENDIANNESS); -} - -void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len) -{ - if (!len) { - return; - } - - if (info->sign) { - memset (buf, 0x00, len << info->shift); - } - else { - switch (info->bits) { - case 8: - memset (buf, 0x80, len << info->shift); - break; - - case 16: - { - int i; - uint16_t *p = buf; - int shift = info->nchannels - 1; - short s = INT16_MAX; - - if (info->swap_endianness) { - s = bswap16 (s); - } - - for (i = 0; i < len << shift; i++) { - p[i] = s; - } - } - break; - - case 32: - { - int i; - uint32_t *p = buf; - int shift = info->nchannels - 1; - int32_t s = INT32_MAX; - - if (info->swap_endianness) { - s = bswap32 (s); - } - - for (i = 0; i < len << shift; i++) { - p[i] = s; - } - } - break; - - default: - AUD_log (NULL, "audio_pcm_info_clear_buf: invalid bits %d\n", - info->bits); - break; - } - } -} - -/* - * Capture - */ -static void noop_conv (struct st_sample *dst, const void *src, int samples) -{ - (void) src; - (void) dst; - (void) samples; -} - -static CaptureVoiceOut *audio_pcm_capture_find_specific ( - struct audsettings *as - ) -{ - CaptureVoiceOut *cap; - AudioState *s = &glob_audio_state; - - for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { - if (audio_pcm_info_eq (&cap->hw.info, as)) { - return cap; - } - } - return NULL; -} - -static void audio_notify_capture (CaptureVoiceOut *cap, audcnotification_e cmd) -{ - struct capture_callback *cb; - -#ifdef DEBUG_CAPTURE - dolog ("notification %d sent\n", cmd); -#endif - for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { - cb->ops.notify (cb->opaque, cmd); - } -} - -static void audio_capture_maybe_changed (CaptureVoiceOut *cap, int enabled) -{ - if (cap->hw.enabled != enabled) { - audcnotification_e cmd; - cap->hw.enabled = enabled; - cmd = enabled ? AUD_CNOTIFY_ENABLE : AUD_CNOTIFY_DISABLE; - audio_notify_capture (cap, cmd); - } -} - -static void audio_recalc_and_notify_capture (CaptureVoiceOut *cap) -{ - HWVoiceOut *hw = &cap->hw; - SWVoiceOut *sw; - int enabled = 0; - - for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { - if (sw->active) { - enabled = 1; - break; - } - } - audio_capture_maybe_changed (cap, enabled); -} - -static void audio_detach_capture (HWVoiceOut *hw) -{ - SWVoiceCap *sc = hw->cap_head.lh_first; - - while (sc) { - SWVoiceCap *sc1 = sc->entries.le_next; - SWVoiceOut *sw = &sc->sw; - CaptureVoiceOut *cap = sc->cap; - int was_active = sw->active; - - if (sw->rate) { - st_rate_stop (sw->rate); - sw->rate = NULL; - } - - QLIST_REMOVE (sw, entries); - QLIST_REMOVE (sc, entries); - g_free (sc); - if (was_active) { - /* We have removed soft voice from the capture: - this might have changed the overall status of the capture - since this might have been the only active voice */ - audio_recalc_and_notify_capture (cap); - } - sc = sc1; - } -} - -static int audio_attach_capture (HWVoiceOut *hw) -{ - AudioState *s = &glob_audio_state; - CaptureVoiceOut *cap; - - audio_detach_capture (hw); - for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { - SWVoiceCap *sc; - SWVoiceOut *sw; - HWVoiceOut *hw_cap = &cap->hw; - - sc = audio_calloc (AUDIO_FUNC, 1, sizeof (*sc)); - if (!sc) { - dolog ("Could not allocate soft capture voice (%zu bytes)\n", - sizeof (*sc)); - return -1; - } - - sc->cap = cap; - sw = &sc->sw; - sw->hw = hw_cap; - sw->info = hw->info; - sw->empty = 1; - sw->active = hw->enabled; - sw->conv = noop_conv; - sw->ratio = ((int64_t) hw_cap->info.freq << 32) / sw->info.freq; - sw->vol = nominal_volume; - sw->rate = st_rate_start (sw->info.freq, hw_cap->info.freq); - if (!sw->rate) { - dolog ("Could not start rate conversion for `%s'\n", SW_NAME (sw)); - g_free (sw); - return -1; - } - QLIST_INSERT_HEAD (&hw_cap->sw_head, sw, entries); - QLIST_INSERT_HEAD (&hw->cap_head, sc, entries); -#ifdef DEBUG_CAPTURE - sw->name = g_strdup_printf ("for %p %d,%d,%d", - hw, sw->info.freq, sw->info.bits, - sw->info.nchannels); - dolog ("Added %s active = %d\n", sw->name, sw->active); -#endif - if (sw->active) { - audio_capture_maybe_changed (cap, 1); - } - } - return 0; -} - -/* - * Hard voice (capture) - */ -static int audio_pcm_hw_find_min_in (HWVoiceIn *hw) -{ - SWVoiceIn *sw; - int m = hw->total_samples_captured; - - for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { - if (sw->active) { - m = audio_MIN (m, sw->total_hw_samples_acquired); - } - } - return m; -} - -int audio_pcm_hw_get_live_in (HWVoiceIn *hw) -{ - int live = hw->total_samples_captured - audio_pcm_hw_find_min_in (hw); - if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { - dolog ("live=%d hw->samples=%d\n", live, hw->samples); - return 0; - } - return live; -} - -int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf, - int live, int pending) -{ - int left = hw->samples - pending; - int len = audio_MIN (left, live); - int clipped = 0; - - while (len) { - struct st_sample *src = hw->mix_buf + hw->rpos; - uint8_t *dst = advance (pcm_buf, hw->rpos << hw->info.shift); - int samples_till_end_of_buf = hw->samples - hw->rpos; - int samples_to_clip = audio_MIN (len, samples_till_end_of_buf); - - hw->clip (dst, src, samples_to_clip); - - hw->rpos = (hw->rpos + samples_to_clip) % hw->samples; - len -= samples_to_clip; - clipped += samples_to_clip; - } - return clipped; -} - -/* - * Soft voice (capture) - */ -static int audio_pcm_sw_get_rpos_in (SWVoiceIn *sw) -{ - HWVoiceIn *hw = sw->hw; - int live = hw->total_samples_captured - sw->total_hw_samples_acquired; - int rpos; - - if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { - dolog ("live=%d hw->samples=%d\n", live, hw->samples); - return 0; - } - - rpos = hw->wpos - live; - if (rpos >= 0) { - return rpos; - } - else { - return hw->samples + rpos; - } -} - -int audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int size) -{ - HWVoiceIn *hw = sw->hw; - int samples, live, ret = 0, swlim, isamp, osamp, rpos, total = 0; - struct st_sample *src, *dst = sw->buf; - - rpos = audio_pcm_sw_get_rpos_in (sw) % hw->samples; - - live = hw->total_samples_captured - sw->total_hw_samples_acquired; - if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { - dolog ("live_in=%d hw->samples=%d\n", live, hw->samples); - return 0; - } - - samples = size >> sw->info.shift; - if (!live) { - return 0; - } - - swlim = (live * sw->ratio) >> 32; - swlim = audio_MIN (swlim, samples); - - while (swlim) { - src = hw->conv_buf + rpos; - isamp = hw->wpos - rpos; - /* XXX: <= ? */ - if (isamp <= 0) { - isamp = hw->samples - rpos; - } - - if (!isamp) { - break; - } - osamp = swlim; - - if (audio_bug (AUDIO_FUNC, osamp < 0)) { - dolog ("osamp=%d\n", osamp); - return 0; - } - - st_rate_flow (sw->rate, src, dst, &isamp, &osamp); - swlim -= osamp; - rpos = (rpos + isamp) % hw->samples; - dst += osamp; - ret += osamp; - total += isamp; - } - - if (!(hw->ctl_caps & VOICE_VOLUME_CAP)) { - mixeng_volume (sw->buf, ret, &sw->vol); - } - - sw->clip (buf, sw->buf, ret); - sw->total_hw_samples_acquired += total; - return ret << sw->info.shift; -} - -/* - * Hard voice (playback) - */ -static int audio_pcm_hw_find_min_out (HWVoiceOut *hw, int *nb_livep) -{ - SWVoiceOut *sw; - int m = INT_MAX; - int nb_live = 0; - - for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { - if (sw->active || !sw->empty) { - m = audio_MIN (m, sw->total_hw_samples_mixed); - nb_live += 1; - } - } - - *nb_livep = nb_live; - return m; -} - -static int audio_pcm_hw_get_live_out (HWVoiceOut *hw, int *nb_live) -{ - int smin; - int nb_live1; - - smin = audio_pcm_hw_find_min_out (hw, &nb_live1); - if (nb_live) { - *nb_live = nb_live1; - } - - if (nb_live1) { - int live = smin; - - if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { - dolog ("live=%d hw->samples=%d\n", live, hw->samples); - return 0; - } - return live; - } - return 0; -} - -/* - * Soft voice (playback) - */ -int audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int size) -{ - int hwsamples, samples, isamp, osamp, wpos, live, dead, left, swlim, blck; - int ret = 0, pos = 0, total = 0; - - if (!sw) { - return size; - } - - hwsamples = sw->hw->samples; - - live = sw->total_hw_samples_mixed; - if (audio_bug (AUDIO_FUNC, live < 0 || live > hwsamples)){ - dolog ("live=%d hw->samples=%d\n", live, hwsamples); - return 0; - } - - if (live == hwsamples) { -#ifdef DEBUG_OUT - dolog ("%s is full %d\n", sw->name, live); -#endif - return 0; - } - - wpos = (sw->hw->rpos + live) % hwsamples; - samples = size >> sw->info.shift; - - dead = hwsamples - live; - swlim = ((int64_t) dead << 32) / sw->ratio; - swlim = audio_MIN (swlim, samples); - if (swlim) { - sw->conv (sw->buf, buf, swlim); - - if (!(sw->hw->ctl_caps & VOICE_VOLUME_CAP)) { - mixeng_volume (sw->buf, swlim, &sw->vol); - } - } - - while (swlim) { - dead = hwsamples - live; - left = hwsamples - wpos; - blck = audio_MIN (dead, left); - if (!blck) { - break; - } - isamp = swlim; - osamp = blck; - st_rate_flow_mix ( - sw->rate, - sw->buf + pos, - sw->hw->mix_buf + wpos, - &isamp, - &osamp - ); - ret += isamp; - swlim -= isamp; - pos += isamp; - live += osamp; - wpos = (wpos + osamp) % hwsamples; - total += osamp; - } - - sw->total_hw_samples_mixed += total; - sw->empty = sw->total_hw_samples_mixed == 0; - -#ifdef DEBUG_OUT - dolog ( - "%s: write size %d ret %d total sw %d\n", - SW_NAME (sw), - size >> sw->info.shift, - ret, - sw->total_hw_samples_mixed - ); -#endif - - return ret << sw->info.shift; -} - -#ifdef DEBUG_AUDIO -static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info) -{ - dolog ("%s: bits %d, sign %d, freq %d, nchan %d\n", - cap, info->bits, info->sign, info->freq, info->nchannels); -} -#endif - -#define DAC -#include "audio_template.h" -#undef DAC -#include "audio_template.h" - -/* - * Timer - */ -static int audio_is_timer_needed (void) -{ - HWVoiceIn *hwi = NULL; - HWVoiceOut *hwo = NULL; - - while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) { - if (!hwo->poll_mode) return 1; - } - while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) { - if (!hwi->poll_mode) return 1; - } - return 0; -} - -static void audio_reset_timer (AudioState *s) -{ - if (audio_is_timer_needed ()) { - timer_mod (s->ts, - qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + conf.period.ticks); - } - else { - timer_del (s->ts); - } -} - -static void audio_timer (void *opaque) -{ - audio_run ("timer"); - audio_reset_timer (opaque); -} - -/* - * Public API - */ -int AUD_write (SWVoiceOut *sw, void *buf, int size) -{ - int bytes; - - if (!sw) { - /* XXX: Consider options */ - return size; - } - - if (!sw->hw->enabled) { - dolog ("Writing to disabled voice %s\n", SW_NAME (sw)); - return 0; - } - - bytes = sw->hw->pcm_ops->write (sw, buf, size); - return bytes; -} - -int AUD_read (SWVoiceIn *sw, void *buf, int size) -{ - int bytes; - - if (!sw) { - /* XXX: Consider options */ - return size; - } - - if (!sw->hw->enabled) { - dolog ("Reading from disabled voice %s\n", SW_NAME (sw)); - return 0; - } - - bytes = sw->hw->pcm_ops->read (sw, buf, size); - return bytes; -} - -int AUD_get_buffer_size_out (SWVoiceOut *sw) -{ - return sw->hw->samples << sw->hw->info.shift; -} - -void AUD_set_active_out (SWVoiceOut *sw, int on) -{ - HWVoiceOut *hw; - - if (!sw) { - return; - } - - hw = sw->hw; - if (sw->active != on) { - AudioState *s = &glob_audio_state; - SWVoiceOut *temp_sw; - SWVoiceCap *sc; - - if (on) { - hw->pending_disable = 0; - if (!hw->enabled) { - hw->enabled = 1; - if (s->vm_running) { - hw->pcm_ops->ctl_out (hw, VOICE_ENABLE, conf.try_poll_out); - audio_reset_timer (s); - } - } - } - else { - if (hw->enabled) { - int nb_active = 0; - - for (temp_sw = hw->sw_head.lh_first; temp_sw; - temp_sw = temp_sw->entries.le_next) { - nb_active += temp_sw->active != 0; - } - - hw->pending_disable = nb_active == 1; - } - } - - for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { - sc->sw.active = hw->enabled; - if (hw->enabled) { - audio_capture_maybe_changed (sc->cap, 1); - } - } - sw->active = on; - } -} - -void AUD_set_active_in (SWVoiceIn *sw, int on) -{ - HWVoiceIn *hw; - - if (!sw) { - return; - } - - hw = sw->hw; - if (sw->active != on) { - AudioState *s = &glob_audio_state; - SWVoiceIn *temp_sw; - - if (on) { - if (!hw->enabled) { - hw->enabled = 1; - if (s->vm_running) { - hw->pcm_ops->ctl_in (hw, VOICE_ENABLE, conf.try_poll_in); - audio_reset_timer (s); - } - } - sw->total_hw_samples_acquired = hw->total_samples_captured; - } - else { - if (hw->enabled) { - int nb_active = 0; - - for (temp_sw = hw->sw_head.lh_first; temp_sw; - temp_sw = temp_sw->entries.le_next) { - nb_active += temp_sw->active != 0; - } - - if (nb_active == 1) { - hw->enabled = 0; - hw->pcm_ops->ctl_in (hw, VOICE_DISABLE); - } - } - } - sw->active = on; - } -} - -static int audio_get_avail (SWVoiceIn *sw) -{ - int live; - - if (!sw) { - return 0; - } - - live = sw->hw->total_samples_captured - sw->total_hw_samples_acquired; - if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) { - dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples); - return 0; - } - - ldebug ( - "%s: get_avail live %d ret %" PRId64 "\n", - SW_NAME (sw), - live, (((int64_t) live << 32) / sw->ratio) << sw->info.shift - ); - - return (((int64_t) live << 32) / sw->ratio) << sw->info.shift; -} - -static int audio_get_free (SWVoiceOut *sw) -{ - int live, dead; - - if (!sw) { - return 0; - } - - live = sw->total_hw_samples_mixed; - - if (audio_bug (AUDIO_FUNC, live < 0 || live > sw->hw->samples)) { - dolog ("live=%d sw->hw->samples=%d\n", live, sw->hw->samples); - return 0; - } - - dead = sw->hw->samples - live; - -#ifdef DEBUG_OUT - dolog ("%s: get_free live %d dead %d ret %" PRId64 "\n", - SW_NAME (sw), - live, dead, (((int64_t) dead << 32) / sw->ratio) << sw->info.shift); -#endif - - return (((int64_t) dead << 32) / sw->ratio) << sw->info.shift; -} - -static void audio_capture_mix_and_clear (HWVoiceOut *hw, int rpos, int samples) -{ - int n; - - if (hw->enabled) { - SWVoiceCap *sc; - - for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { - SWVoiceOut *sw = &sc->sw; - int rpos2 = rpos; - - n = samples; - while (n) { - int till_end_of_hw = hw->samples - rpos2; - int to_write = audio_MIN (till_end_of_hw, n); - int bytes = to_write << hw->info.shift; - int written; - - sw->buf = hw->mix_buf + rpos2; - written = audio_pcm_sw_write (sw, NULL, bytes); - if (written - bytes) { - dolog ("Could not mix %d bytes into a capture " - "buffer, mixed %d\n", - bytes, written); - break; - } - n -= to_write; - rpos2 = (rpos2 + to_write) % hw->samples; - } - } - } - - n = audio_MIN (samples, hw->samples - rpos); - mixeng_clear (hw->mix_buf + rpos, n); - mixeng_clear (hw->mix_buf, samples - n); -} - -static void audio_run_out (AudioState *s) -{ - HWVoiceOut *hw = NULL; - SWVoiceOut *sw; - - while ((hw = audio_pcm_hw_find_any_enabled_out (hw))) { - int played; - int live, free, nb_live, cleanup_required, prev_rpos; - - live = audio_pcm_hw_get_live_out (hw, &nb_live); - if (!nb_live) { - live = 0; - } - - if (audio_bug (AUDIO_FUNC, live < 0 || live > hw->samples)) { - dolog ("live=%d hw->samples=%d\n", live, hw->samples); - continue; - } - - if (hw->pending_disable && !nb_live) { - SWVoiceCap *sc; -#ifdef DEBUG_OUT - dolog ("Disabling voice\n"); -#endif - hw->enabled = 0; - hw->pending_disable = 0; - hw->pcm_ops->ctl_out (hw, VOICE_DISABLE); - for (sc = hw->cap_head.lh_first; sc; sc = sc->entries.le_next) { - sc->sw.active = 0; - audio_recalc_and_notify_capture (sc->cap); - } - continue; - } - - if (!live) { - for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { - if (sw->active) { - free = audio_get_free (sw); - if (free > 0) { - sw->callback.fn (sw->callback.opaque, free); - } - } - } - continue; - } - - prev_rpos = hw->rpos; - played = hw->pcm_ops->run_out (hw, live); - if (audio_bug (AUDIO_FUNC, hw->rpos >= hw->samples)) { - dolog ("hw->rpos=%d hw->samples=%d played=%d\n", - hw->rpos, hw->samples, played); - hw->rpos = 0; - } - -#ifdef DEBUG_OUT - dolog ("played=%d\n", played); -#endif - - if (played) { - hw->ts_helper += played; - audio_capture_mix_and_clear (hw, prev_rpos, played); - } - - cleanup_required = 0; - for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { - if (!sw->active && sw->empty) { - continue; - } - - if (audio_bug (AUDIO_FUNC, played > sw->total_hw_samples_mixed)) { - dolog ("played=%d sw->total_hw_samples_mixed=%d\n", - played, sw->total_hw_samples_mixed); - played = sw->total_hw_samples_mixed; - } - - sw->total_hw_samples_mixed -= played; - - if (!sw->total_hw_samples_mixed) { - sw->empty = 1; - cleanup_required |= !sw->active && !sw->callback.fn; - } - - if (sw->active) { - free = audio_get_free (sw); - if (free > 0) { - sw->callback.fn (sw->callback.opaque, free); - } - } - } - - if (cleanup_required) { - SWVoiceOut *sw1; - - sw = hw->sw_head.lh_first; - while (sw) { - sw1 = sw->entries.le_next; - if (!sw->active && !sw->callback.fn) { - audio_close_out (sw); - } - sw = sw1; - } - } - } -} - -static void audio_run_in (AudioState *s) -{ - HWVoiceIn *hw = NULL; - - while ((hw = audio_pcm_hw_find_any_enabled_in (hw))) { - SWVoiceIn *sw; - int captured, min; - - captured = hw->pcm_ops->run_in (hw); - - min = audio_pcm_hw_find_min_in (hw); - hw->total_samples_captured += captured - min; - hw->ts_helper += captured; - - for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { - sw->total_hw_samples_acquired -= min; - - if (sw->active) { - int avail; - - avail = audio_get_avail (sw); - if (avail > 0) { - sw->callback.fn (sw->callback.opaque, avail); - } - } - } - } -} - -static void audio_run_capture (AudioState *s) -{ - CaptureVoiceOut *cap; - - for (cap = s->cap_head.lh_first; cap; cap = cap->entries.le_next) { - int live, rpos, captured; - HWVoiceOut *hw = &cap->hw; - SWVoiceOut *sw; - - captured = live = audio_pcm_hw_get_live_out (hw, NULL); - rpos = hw->rpos; - while (live) { - int left = hw->samples - rpos; - int to_capture = audio_MIN (live, left); - struct st_sample *src; - struct capture_callback *cb; - - src = hw->mix_buf + rpos; - hw->clip (cap->buf, src, to_capture); - mixeng_clear (src, to_capture); - - for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { - cb->ops.capture (cb->opaque, cap->buf, - to_capture << hw->info.shift); - } - rpos = (rpos + to_capture) % hw->samples; - live -= to_capture; - } - hw->rpos = rpos; - - for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) { - if (!sw->active && sw->empty) { - continue; - } - - if (audio_bug (AUDIO_FUNC, captured > sw->total_hw_samples_mixed)) { - dolog ("captured=%d sw->total_hw_samples_mixed=%d\n", - captured, sw->total_hw_samples_mixed); - captured = sw->total_hw_samples_mixed; - } - - sw->total_hw_samples_mixed -= captured; - sw->empty = sw->total_hw_samples_mixed == 0; - } - } -} - -void audio_run (const char *msg) -{ - AudioState *s = &glob_audio_state; - - audio_run_out (s); - audio_run_in (s); - audio_run_capture (s); -#ifdef DEBUG_POLL - { - static double prevtime; - double currtime; - struct timeval tv; - - if (gettimeofday (&tv, NULL)) { - perror ("audio_run: gettimeofday"); - return; - } - - currtime = tv.tv_sec + tv.tv_usec * 1e-6; - dolog ("Elapsed since last %s: %f\n", msg, currtime - prevtime); - prevtime = currtime; - } -#endif -} - -static struct audio_option audio_options[] = { - /* DAC */ - { - .name = "DAC_FIXED_SETTINGS", - .tag = AUD_OPT_BOOL, - .valp = &conf.fixed_out.enabled, - .descr = "Use fixed settings for host DAC" - }, - { - .name = "DAC_FIXED_FREQ", - .tag = AUD_OPT_INT, - .valp = &conf.fixed_out.settings.freq, - .descr = "Frequency for fixed host DAC" - }, - { - .name = "DAC_FIXED_FMT", - .tag = AUD_OPT_FMT, - .valp = &conf.fixed_out.settings.fmt, - .descr = "Format for fixed host DAC" - }, - { - .name = "DAC_FIXED_CHANNELS", - .tag = AUD_OPT_INT, - .valp = &conf.fixed_out.settings.nchannels, - .descr = "Number of channels for fixed DAC (1 - mono, 2 - stereo)" - }, - { - .name = "DAC_VOICES", - .tag = AUD_OPT_INT, - .valp = &conf.fixed_out.nb_voices, - .descr = "Number of voices for DAC" - }, - { - .name = "DAC_TRY_POLL", - .tag = AUD_OPT_BOOL, - .valp = &conf.try_poll_out, - .descr = "Attempt using poll mode for DAC" - }, - /* ADC */ - { - .name = "ADC_FIXED_SETTINGS", - .tag = AUD_OPT_BOOL, - .valp = &conf.fixed_in.enabled, - .descr = "Use fixed settings for host ADC" - }, - { - .name = "ADC_FIXED_FREQ", - .tag = AUD_OPT_INT, - .valp = &conf.fixed_in.settings.freq, - .descr = "Frequency for fixed host ADC" - }, - { - .name = "ADC_FIXED_FMT", - .tag = AUD_OPT_FMT, - .valp = &conf.fixed_in.settings.fmt, - .descr = "Format for fixed host ADC" - }, - { - .name = "ADC_FIXED_CHANNELS", - .tag = AUD_OPT_INT, - .valp = &conf.fixed_in.settings.nchannels, - .descr = "Number of channels for fixed ADC (1 - mono, 2 - stereo)" - }, - { - .name = "ADC_VOICES", - .tag = AUD_OPT_INT, - .valp = &conf.fixed_in.nb_voices, - .descr = "Number of voices for ADC" - }, - { - .name = "ADC_TRY_POLL", - .tag = AUD_OPT_BOOL, - .valp = &conf.try_poll_in, - .descr = "Attempt using poll mode for ADC" - }, - /* Misc */ - { - .name = "TIMER_PERIOD", - .tag = AUD_OPT_INT, - .valp = &conf.period.hertz, - .descr = "Timer period in HZ (0 - use lowest possible)" - }, - { /* End of list */ } -}; - -static void audio_pp_nb_voices (const char *typ, int nb) -{ - switch (nb) { - case 0: - printf ("Does not support %s\n", typ); - break; - case 1: - printf ("One %s voice\n", typ); - break; - case INT_MAX: - printf ("Theoretically supports many %s voices\n", typ); - break; - default: - printf ("Theoretically supports up to %d %s voices\n", nb, typ); - break; - } - -} - -void AUD_help (void) -{ - size_t i; - - audio_process_options ("AUDIO", audio_options); - for (i = 0; i < ARRAY_SIZE (drvtab); i++) { - struct audio_driver *d = drvtab[i]; - if (d->options) { - audio_process_options (d->name, d->options); - } - } - - printf ("Audio options:\n"); - audio_print_options ("AUDIO", audio_options); - printf ("\n"); - - printf ("Available drivers:\n"); - - for (i = 0; i < ARRAY_SIZE (drvtab); i++) { - struct audio_driver *d = drvtab[i]; - - printf ("Name: %s\n", d->name); - printf ("Description: %s\n", d->descr); - - audio_pp_nb_voices ("playback", d->max_voices_out); - audio_pp_nb_voices ("capture", d->max_voices_in); - - if (d->options) { - printf ("Options:\n"); - audio_print_options (d->name, d->options); - } - else { - printf ("No options\n"); - } - printf ("\n"); - } - - printf ( - "Options are settable through environment variables.\n" - "Example:\n" -#ifdef _WIN32 - " set QEMU_AUDIO_DRV=wav\n" - " set QEMU_WAV_PATH=c:\\tune.wav\n" -#else - " export QEMU_AUDIO_DRV=wav\n" - " export QEMU_WAV_PATH=$HOME/tune.wav\n" - "(for csh replace export with setenv in the above)\n" -#endif - " qemu ...\n\n" - ); -} - -static int audio_driver_init (AudioState *s, struct audio_driver *drv) -{ - if (drv->options) { - audio_process_options (drv->name, drv->options); - } - s->drv_opaque = drv->init (); - - if (s->drv_opaque) { - audio_init_nb_voices_out (drv); - audio_init_nb_voices_in (drv); - s->drv = drv; - return 0; - } - else { - dolog ("Could not init `%s' audio driver\n", drv->name); - return -1; - } -} - -static void audio_vm_change_state_handler (void *opaque, int running, - RunState state) -{ - AudioState *s = opaque; - HWVoiceOut *hwo = NULL; - HWVoiceIn *hwi = NULL; - int op = running ? VOICE_ENABLE : VOICE_DISABLE; - - s->vm_running = running; - while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) { - hwo->pcm_ops->ctl_out (hwo, op, conf.try_poll_out); - } - - while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) { - hwi->pcm_ops->ctl_in (hwi, op, conf.try_poll_in); - } - audio_reset_timer (s); -} - -static void audio_atexit (void) -{ - AudioState *s = &glob_audio_state; - HWVoiceOut *hwo = NULL; - HWVoiceIn *hwi = NULL; - - while ((hwo = audio_pcm_hw_find_any_out (hwo))) { - SWVoiceCap *sc; - - if (hwo->enabled) { - hwo->pcm_ops->ctl_out (hwo, VOICE_DISABLE); - } - hwo->pcm_ops->fini_out (hwo); - - for (sc = hwo->cap_head.lh_first; sc; sc = sc->entries.le_next) { - CaptureVoiceOut *cap = sc->cap; - struct capture_callback *cb; - - for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { - cb->ops.destroy (cb->opaque); - } - } - } - - while ((hwi = audio_pcm_hw_find_any_in (hwi))) { - if (hwi->enabled) { - hwi->pcm_ops->ctl_in (hwi, VOICE_DISABLE); - } - hwi->pcm_ops->fini_in (hwi); - } - - if (s->drv) { - s->drv->fini (s->drv_opaque); - } -} - -static const VMStateDescription vmstate_audio = { - .name = "audio", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_END_OF_LIST() - } -}; - -static void audio_init (void) -{ - size_t i; - int done = 0; - const char *drvname; - VMChangeStateEntry *e; - AudioState *s = &glob_audio_state; - - if (s->drv) { - return; - } - - QLIST_INIT (&s->hw_head_out); - QLIST_INIT (&s->hw_head_in); - QLIST_INIT (&s->cap_head); - atexit (audio_atexit); - - s->ts = timer_new_ns(QEMU_CLOCK_VIRTUAL, audio_timer, s); - - audio_process_options ("AUDIO", audio_options); - - s->nb_hw_voices_out = conf.fixed_out.nb_voices; - s->nb_hw_voices_in = conf.fixed_in.nb_voices; - - if (s->nb_hw_voices_out <= 0) { - dolog ("Bogus number of playback voices %d, setting to 1\n", - s->nb_hw_voices_out); - s->nb_hw_voices_out = 1; - } - - if (s->nb_hw_voices_in <= 0) { - dolog ("Bogus number of capture voices %d, setting to 0\n", - s->nb_hw_voices_in); - s->nb_hw_voices_in = 0; - } - - { - int def; - drvname = audio_get_conf_str ("QEMU_AUDIO_DRV", NULL, &def); - } - - if (drvname) { - int found = 0; - - for (i = 0; i < ARRAY_SIZE (drvtab); i++) { - if (!strcmp (drvname, drvtab[i]->name)) { - done = !audio_driver_init (s, drvtab[i]); - found = 1; - break; - } - } - - if (!found) { - dolog ("Unknown audio driver `%s'\n", drvname); - dolog ("Run with -audio-help to list available drivers\n"); - } - } - - if (!done) { - for (i = 0; !done && i < ARRAY_SIZE (drvtab); i++) { - if (drvtab[i]->can_be_default) { - done = !audio_driver_init (s, drvtab[i]); - } - } - } - - if (!done) { - done = !audio_driver_init (s, &no_audio_driver); - assert(done); - dolog("warning: Using timer based audio emulation\n"); - } - - if (conf.period.hertz <= 0) { - if (conf.period.hertz < 0) { - dolog ("warning: Timer period is negative - %d " - "treating as zero\n", - conf.period.hertz); - } - conf.period.ticks = 1; - } else { - conf.period.ticks = NANOSECONDS_PER_SECOND / conf.period.hertz; - } - - e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s); - if (!e) { - dolog ("warning: Could not register change state handler\n" - "(Audio can continue looping even after stopping the VM)\n"); - } - - QLIST_INIT (&s->card_head); - vmstate_register (NULL, 0, &vmstate_audio, s); -} - -void AUD_register_card (const char *name, QEMUSoundCard *card) -{ - audio_init (); - card->name = g_strdup (name); - memset (&card->entries, 0, sizeof (card->entries)); - QLIST_INSERT_HEAD (&glob_audio_state.card_head, card, entries); -} - -void AUD_remove_card (QEMUSoundCard *card) -{ - QLIST_REMOVE (card, entries); - g_free (card->name); -} - - -CaptureVoiceOut *AUD_add_capture ( - struct audsettings *as, - struct audio_capture_ops *ops, - void *cb_opaque - ) -{ - AudioState *s = &glob_audio_state; - CaptureVoiceOut *cap; - struct capture_callback *cb; - - if (audio_validate_settings (as)) { - dolog ("Invalid settings were passed when trying to add capture\n"); - audio_print_settings (as); - goto err0; - } - - cb = audio_calloc (AUDIO_FUNC, 1, sizeof (*cb)); - if (!cb) { - dolog ("Could not allocate capture callback information, size %zu\n", - sizeof (*cb)); - goto err0; - } - cb->ops = *ops; - cb->opaque = cb_opaque; - - cap = audio_pcm_capture_find_specific (as); - if (cap) { - QLIST_INSERT_HEAD (&cap->cb_head, cb, entries); - return cap; - } - else { - HWVoiceOut *hw; - CaptureVoiceOut *cap; - - cap = audio_calloc (AUDIO_FUNC, 1, sizeof (*cap)); - if (!cap) { - dolog ("Could not allocate capture voice, size %zu\n", - sizeof (*cap)); - goto err1; - } - - hw = &cap->hw; - QLIST_INIT (&hw->sw_head); - QLIST_INIT (&cap->cb_head); - - /* XXX find a more elegant way */ - hw->samples = 4096 * 4; - hw->mix_buf = audio_calloc (AUDIO_FUNC, hw->samples, - sizeof (struct st_sample)); - if (!hw->mix_buf) { - dolog ("Could not allocate capture mix buffer (%d samples)\n", - hw->samples); - goto err2; - } - - audio_pcm_init_info (&hw->info, as); - - cap->buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); - if (!cap->buf) { - dolog ("Could not allocate capture buffer " - "(%d samples, each %d bytes)\n", - hw->samples, 1 << hw->info.shift); - goto err3; - } - - hw->clip = mixeng_clip - [hw->info.nchannels == 2] - [hw->info.sign] - [hw->info.swap_endianness] - [audio_bits_to_index (hw->info.bits)]; - - QLIST_INSERT_HEAD (&s->cap_head, cap, entries); - QLIST_INSERT_HEAD (&cap->cb_head, cb, entries); - - hw = NULL; - while ((hw = audio_pcm_hw_find_any_out (hw))) { - audio_attach_capture (hw); - } - return cap; - - err3: - g_free (cap->hw.mix_buf); - err2: - g_free (cap); - err1: - g_free (cb); - err0: - return NULL; - } -} - -void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque) -{ - struct capture_callback *cb; - - for (cb = cap->cb_head.lh_first; cb; cb = cb->entries.le_next) { - if (cb->opaque == cb_opaque) { - cb->ops.destroy (cb_opaque); - QLIST_REMOVE (cb, entries); - g_free (cb); - - if (!cap->cb_head.lh_first) { - SWVoiceOut *sw = cap->hw.sw_head.lh_first, *sw1; - - while (sw) { - SWVoiceCap *sc = (SWVoiceCap *) sw; -#ifdef DEBUG_CAPTURE - dolog ("freeing %s\n", sw->name); -#endif - - sw1 = sw->entries.le_next; - if (sw->rate) { - st_rate_stop (sw->rate); - sw->rate = NULL; - } - QLIST_REMOVE (sw, entries); - QLIST_REMOVE (sc, entries); - g_free (sc); - sw = sw1; - } - QLIST_REMOVE (cap, entries); - g_free (cap); - } - return; - } - } -} - -void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol) -{ - if (sw) { - HWVoiceOut *hw = sw->hw; - - sw->vol.mute = mute; - sw->vol.l = nominal_volume.l * lvol / 255; - sw->vol.r = nominal_volume.r * rvol / 255; - - if (hw->pcm_ops->ctl_out) { - hw->pcm_ops->ctl_out (hw, VOICE_VOLUME, sw); - } - } -} - -void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol) -{ - if (sw) { - HWVoiceIn *hw = sw->hw; - - sw->vol.mute = mute; - sw->vol.l = nominal_volume.l * lvol / 255; - sw->vol.r = nominal_volume.r * rvol / 255; - - if (hw->pcm_ops->ctl_in) { - hw->pcm_ops->ctl_in (hw, VOICE_VOLUME, sw); - } - } -} |