diff options
Diffstat (limited to 'qemu/audio/audio.c')
| -rw-r--r-- | qemu/audio/audio.c | 2063 |
1 files changed, 2063 insertions, 0 deletions
diff --git a/qemu/audio/audio.c b/qemu/audio/audio.c new file mode 100644 index 000000000..5be4b15fc --- /dev/null +++ b/qemu/audio/audio.c @@ -0,0 +1,2063 @@ +/* + * 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 "hw/hw.h" +#include "audio.h" +#include "monitor/monitor.h" +#include "qemu/timer.h" +#include "sysemu/sysemu.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); + if (!s->ts) { + hw_error("Could not create audio timer\n"); + } + + 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); + if (!done) { + hw_error("Could not initialize audio subsystem\n"); + } + else { + 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 = + muldiv64 (1, get_ticks_per_sec (), 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); + } + } +} |