Signed-off-by: Kővágó, Zoltán <dirty.ice...@gmail.com> --- audio/alsaaudio.c | 330 ++++++++++++++----------------------------- audio/audio_legacy.c | 94 +++++++++++- 2 files changed, 198 insertions(+), 226 deletions(-)
diff --git a/audio/alsaaudio.c b/audio/alsaaudio.c index 8302f3e882..6b43a06180 100644 --- a/audio/alsaaudio.c +++ b/audio/alsaaudio.c @@ -33,28 +33,9 @@ #define AUDIO_CAP "alsa" #include "audio_int.h" -typedef struct ALSAConf { - int size_in_usec_in; - int size_in_usec_out; - const char *pcm_name_in; - const char *pcm_name_out; - unsigned int buffer_size_in; - unsigned int period_size_in; - unsigned int buffer_size_out; - unsigned int period_size_out; - unsigned int threshold; - - int buffer_size_in_overridden; - int period_size_in_overridden; - - int buffer_size_out_overridden; - int period_size_out_overridden; -} ALSAConf; - struct pollhlp { snd_pcm_t *handle; struct pollfd *pfds; - ALSAConf *conf; int count; int mask; }; @@ -66,6 +47,7 @@ typedef struct ALSAVoiceOut { void *pcm_buf; snd_pcm_t *handle; struct pollhlp pollhlp; + Audiodev *dev; } ALSAVoiceOut; typedef struct ALSAVoiceIn { @@ -73,16 +55,13 @@ typedef struct ALSAVoiceIn { snd_pcm_t *handle; void *pcm_buf; struct pollhlp pollhlp; + Audiodev *dev; } ALSAVoiceIn; struct alsa_params_req { int freq; snd_pcm_format_t fmt; int nchannels; - int size_in_usec; - int override_mask; - unsigned int buffer_size; - unsigned int period_size; }; struct alsa_params_obt { @@ -408,7 +387,8 @@ static int alsa_to_audfmt (snd_pcm_format_t alsafmt, AudioFormat *fmt, static void alsa_dump_info (struct alsa_params_req *req, struct alsa_params_obt *obt, - snd_pcm_format_t obtfmt) + snd_pcm_format_t obtfmt, + AudiodevPerDirectionOptions *pdo) { dolog ("parameter | requested value | obtained value\n"); dolog ("format | %10d | %10d\n", req->fmt, obtfmt); @@ -416,8 +396,9 @@ static void alsa_dump_info (struct alsa_params_req *req, req->nchannels, obt->nchannels); dolog ("frequency | %10d | %10d\n", req->freq, obt->freq); dolog ("============================================\n"); - dolog ("requested: buffer size %d period size %d\n", - req->buffer_size, req->period_size); + dolog ("requested: buffer len %" PRId32 " buffer count %" PRId32 "\n", + pdo->has_buffer_len ? pdo->buffer_len : 0, + pdo->has_buffer_count ? pdo->buffer_count : 0); dolog ("obtained: samples %ld\n", obt->samples); } @@ -451,23 +432,25 @@ static void alsa_set_threshold (snd_pcm_t *handle, snd_pcm_uframes_t threshold) } } -static int alsa_open (int in, struct alsa_params_req *req, - struct alsa_params_obt *obt, snd_pcm_t **handlep, - ALSAConf *conf) +static int alsa_open(bool in, struct alsa_params_req *req, + struct alsa_params_obt *obt, snd_pcm_t **handlep, + Audiodev *dev) { + AudiodevPerDirectionOptions *pdo = in ? dev->in : dev->out; + AudiodevAlsaOptions *aopts = &dev->u.alsa; + AudiodevAlsaPerDirectionOptions *apdo = + in ? aopts->alsa_in : aopts->alsa_out; snd_pcm_t *handle; snd_pcm_hw_params_t *hw_params; int err; - int size_in_usec; unsigned int freq, nchannels; - const char *pcm_name = in ? conf->pcm_name_in : conf->pcm_name_out; + const char *pcm_name = apdo->has_dev ? apdo->dev : "default"; snd_pcm_uframes_t obt_buffer_size; const char *typ = in ? "ADC" : "DAC"; snd_pcm_format_t obtfmt; freq = req->freq; nchannels = req->nchannels; - size_in_usec = req->size_in_usec; snd_pcm_hw_params_alloca (&hw_params); @@ -527,79 +510,49 @@ static int alsa_open (int in, struct alsa_params_req *req, goto err; } - if (req->buffer_size) { - unsigned long obt; + if (pdo->buffer_count) { + if (pdo->buffer_len) { + int64_t req = pdo->buffer_len * pdo->buffer_count; - if (size_in_usec) { int dir = 0; - unsigned int btime = req->buffer_size; + unsigned int btime = req; - err = snd_pcm_hw_params_set_buffer_time_near ( - handle, - hw_params, - &btime, - &dir - ); - obt = btime; - } - else { - snd_pcm_uframes_t bsize = req->buffer_size; + err = snd_pcm_hw_params_set_buffer_time_near( + handle, hw_params, &btime, &dir); - err = snd_pcm_hw_params_set_buffer_size_near ( - handle, - hw_params, - &bsize - ); - obt = bsize; - } - if (err < 0) { - alsa_logerr2 (err, typ, "Failed to set buffer %s to %d\n", - size_in_usec ? "time" : "size", req->buffer_size); - goto err; - } + if (err < 0) { + alsa_logerr2(err, typ, + "Failed to set buffer time to %" PRId64 "\n", + req); + goto err; + } - if ((req->override_mask & 2) && (obt - req->buffer_size)) - dolog ("Requested buffer %s %u was rejected, using %lu\n", - size_in_usec ? "time" : "size", req->buffer_size, obt); + if (pdo->has_buffer_count && btime != req) { + dolog("Requested buffer time %" PRId64 + " was rejected, using %u\n", req, btime); + } + } else { + dolog("Can't set buffer-count without buffer-len!\n"); + } } - if (req->period_size) { - unsigned long obt; + if (pdo->buffer_len) { + int dir = 0; + unsigned int ptime = pdo->buffer_len; - if (size_in_usec) { - int dir = 0; - unsigned int ptime = req->period_size; - - err = snd_pcm_hw_params_set_period_time_near ( - handle, - hw_params, - &ptime, - &dir - ); - obt = ptime; - } - else { - int dir = 0; - snd_pcm_uframes_t psize = req->period_size; - - err = snd_pcm_hw_params_set_period_size_near ( - handle, - hw_params, - &psize, - &dir - ); - obt = psize; - } + err = snd_pcm_hw_params_set_period_time_near(handle, hw_params, &ptime, + &dir); if (err < 0) { - alsa_logerr2 (err, typ, "Failed to set period %s to %d\n", - size_in_usec ? "time" : "size", req->period_size); + alsa_logerr2(err, typ, "Failed to set period time to %" PRId32 "\n", + pdo->buffer_len); goto err; } - if (((req->override_mask & 1) && (obt - req->period_size))) - dolog ("Requested period %s %u was rejected, using %lu\n", - size_in_usec ? "time" : "size", req->period_size, obt); + if (pdo->has_buffer_len && ptime != pdo->buffer_len) { + dolog("Requested period time %" PRId32 " was rejected, using %d\n", + pdo->buffer_len, ptime); + } } err = snd_pcm_hw_params (handle, hw_params); @@ -631,33 +584,10 @@ static int alsa_open (int in, struct alsa_params_req *req, goto err; } - if (!in && conf->threshold) { - snd_pcm_uframes_t threshold; - int bytes_per_sec; - - bytes_per_sec = freq << (nchannels == 2); - - switch (obt->fmt) { - case AUDIO_FORMAT_S8: - case AUDIO_FORMAT_U8: - break; - - case AUDIO_FORMAT_S16: - case AUDIO_FORMAT_U16: - bytes_per_sec <<= 1; - break; - - case AUDIO_FORMAT_S32: - case AUDIO_FORMAT_U32: - bytes_per_sec <<= 2; - break; - - default: - abort(); - } - - threshold = (conf->threshold * bytes_per_sec) / 1000; - alsa_set_threshold (handle, threshold); + if (!in && aopts->has_threshold && aopts->threshold) { + struct audsettings as = { .freq = freq }; + alsa_set_threshold(handle, + audio_buffer_frames(pdo, &as, aopts->threshold)); } obt->nchannels = nchannels; @@ -670,11 +600,11 @@ static int alsa_open (int in, struct alsa_params_req *req, obt->nchannels != req->nchannels || obt->freq != req->freq) { dolog ("Audio parameters for %s\n", typ); - alsa_dump_info (req, obt, obtfmt); + alsa_dump_info (req, obt, obtfmt, pdo); } #ifdef DEBUG - alsa_dump_info (req, obt, obtfmt); + alsa_dump_info (req, obt, obtfmt, pdo); #endif return 0; @@ -800,19 +730,13 @@ static int alsa_init_out(HWVoiceOut *hw, struct audsettings *as, struct alsa_params_obt obt; snd_pcm_t *handle; struct audsettings obt_as; - ALSAConf *conf = drv_opaque; + Audiodev *dev = drv_opaque; req.fmt = aud_to_alsafmt (as->fmt, as->endianness); req.freq = as->freq; req.nchannels = as->nchannels; - req.period_size = conf->period_size_out; - req.buffer_size = conf->buffer_size_out; - req.size_in_usec = conf->size_in_usec_out; - req.override_mask = - (conf->period_size_out_overridden ? 1 : 0) | - (conf->buffer_size_out_overridden ? 2 : 0); - if (alsa_open (0, &req, &obt, &handle, conf)) { + if (alsa_open (0, &req, &obt, &handle, dev)) { return -1; } @@ -833,7 +757,7 @@ static int alsa_init_out(HWVoiceOut *hw, struct audsettings *as, } alsa->handle = handle; - alsa->pollhlp.conf = conf; + alsa->dev = dev; return 0; } @@ -873,16 +797,12 @@ static int alsa_voice_ctl (snd_pcm_t *handle, const char *typ, int ctl) static int alsa_ctl_out (HWVoiceOut *hw, int cmd, ...) { ALSAVoiceOut *alsa = (ALSAVoiceOut *) hw; + AudiodevAlsaPerDirectionOptions *apdo = alsa->dev->u.alsa.alsa_out; switch (cmd) { case VOICE_ENABLE: { - va_list ap; - int poll_mode; - - va_start (ap, cmd); - poll_mode = va_arg (ap, int); - va_end (ap); + bool poll_mode = apdo->try_poll; ldebug ("enabling voice\n"); if (poll_mode && alsa_poll_out (hw)) { @@ -911,19 +831,13 @@ static int alsa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) struct alsa_params_obt obt; snd_pcm_t *handle; struct audsettings obt_as; - ALSAConf *conf = drv_opaque; + Audiodev *dev = drv_opaque; req.fmt = aud_to_alsafmt (as->fmt, as->endianness); req.freq = as->freq; req.nchannels = as->nchannels; - req.period_size = conf->period_size_in; - req.buffer_size = conf->buffer_size_in; - req.size_in_usec = conf->size_in_usec_in; - req.override_mask = - (conf->period_size_in_overridden ? 1 : 0) | - (conf->buffer_size_in_overridden ? 2 : 0); - if (alsa_open (1, &req, &obt, &handle, conf)) { + if (alsa_open (1, &req, &obt, &handle, dev)) { return -1; } @@ -944,7 +858,7 @@ static int alsa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) } alsa->handle = handle; - alsa->pollhlp.conf = conf; + alsa->dev = dev; return 0; } @@ -1086,16 +1000,12 @@ static int alsa_read (SWVoiceIn *sw, void *buf, int size) static int alsa_ctl_in (HWVoiceIn *hw, int cmd, ...) { ALSAVoiceIn *alsa = (ALSAVoiceIn *) hw; + AudiodevAlsaPerDirectionOptions *apdo = alsa->dev->u.alsa.alsa_in; switch (cmd) { case VOICE_ENABLE: { - va_list ap; - int poll_mode; - - va_start (ap, cmd); - poll_mode = va_arg (ap, int); - va_end (ap); + bool poll_mode = apdo->try_poll; ldebug ("enabling voice\n"); if (poll_mode && alsa_poll_in (hw)) { @@ -1118,88 +1028,59 @@ static int alsa_ctl_in (HWVoiceIn *hw, int cmd, ...) return -1; } -static ALSAConf glob_conf = { - .buffer_size_out = 4096, - .period_size_out = 1024, - .pcm_name_out = "default", - .pcm_name_in = "default", -}; +static void alsa_init_per_direction(AudiodevAlsaPerDirectionOptions **apdo, + bool *has_apdo) +{ + if (!*has_apdo) { + *apdo = g_malloc0(sizeof(AudiodevAlsaPerDirectionOptions)); + *has_apdo = true; + } + + if (!(*apdo)->has_try_poll) { + (*apdo)->try_poll = true; + (*apdo)->has_try_poll = true; + } +} static void *alsa_audio_init(Audiodev *dev) { - ALSAConf *conf = g_malloc(sizeof(ALSAConf)); - *conf = glob_conf; - return conf; + AudiodevAlsaOptions *aopts; + assert(dev->driver == AUDIODEV_DRIVER_ALSA); + + aopts = &dev->u.alsa; + alsa_init_per_direction(&aopts->alsa_in, &aopts->has_alsa_in); + alsa_init_per_direction(&aopts->alsa_out, &aopts->has_alsa_out); + + /* + * need to define them, as otherwise alsa produces no sound + * doesn't set has_* so alsa_open can identify it wasn't set by the user + */ + if (!dev->out->has_buffer_count) { + dev->out->buffer_count = 4; + } + if (!dev->out->has_buffer_len) { + /* 1024 frames assuming 44100Hz */ + dev->out->buffer_len = 1024 * 1000000 / 44100; + } + + /* + * OptsVisitor sets unspecified optional fields to zero, but do not depend + * on it... + */ + if (!dev->in->has_buffer_count) { + dev->in->buffer_count = 0; + } + if (!dev->in->has_buffer_len) { + dev->in->buffer_len = 0; + } + + return dev; } static void alsa_audio_fini (void *opaque) { - g_free(opaque); } -static struct audio_option alsa_options[] = { - { - .name = "DAC_SIZE_IN_USEC", - .tag = AUD_OPT_BOOL, - .valp = &glob_conf.size_in_usec_out, - .descr = "DAC period/buffer size in microseconds (otherwise in frames)" - }, - { - .name = "DAC_PERIOD_SIZE", - .tag = AUD_OPT_INT, - .valp = &glob_conf.period_size_out, - .descr = "DAC period size (0 to go with system default)", - .overriddenp = &glob_conf.period_size_out_overridden - }, - { - .name = "DAC_BUFFER_SIZE", - .tag = AUD_OPT_INT, - .valp = &glob_conf.buffer_size_out, - .descr = "DAC buffer size (0 to go with system default)", - .overriddenp = &glob_conf.buffer_size_out_overridden - }, - { - .name = "ADC_SIZE_IN_USEC", - .tag = AUD_OPT_BOOL, - .valp = &glob_conf.size_in_usec_in, - .descr = - "ADC period/buffer size in microseconds (otherwise in frames)" - }, - { - .name = "ADC_PERIOD_SIZE", - .tag = AUD_OPT_INT, - .valp = &glob_conf.period_size_in, - .descr = "ADC period size (0 to go with system default)", - .overriddenp = &glob_conf.period_size_in_overridden - }, - { - .name = "ADC_BUFFER_SIZE", - .tag = AUD_OPT_INT, - .valp = &glob_conf.buffer_size_in, - .descr = "ADC buffer size (0 to go with system default)", - .overriddenp = &glob_conf.buffer_size_in_overridden - }, - { - .name = "THRESHOLD", - .tag = AUD_OPT_INT, - .valp = &glob_conf.threshold, - .descr = "(undocumented)" - }, - { - .name = "DAC_DEV", - .tag = AUD_OPT_STR, - .valp = &glob_conf.pcm_name_out, - .descr = "DAC device name (for instance dmix)" - }, - { - .name = "ADC_DEV", - .tag = AUD_OPT_STR, - .valp = &glob_conf.pcm_name_in, - .descr = "ADC device name" - }, - { /* End of list */ } -}; - static struct audio_pcm_ops alsa_pcm_ops = { .init_out = alsa_init_out, .fini_out = alsa_fini_out, @@ -1217,7 +1098,6 @@ static struct audio_pcm_ops alsa_pcm_ops = { static struct audio_driver alsa_audio_driver = { .name = "alsa", .descr = "ALSA http://www.alsa-project.org", - .options = alsa_options, .init = alsa_audio_init, .fini = alsa_audio_fini, .pcm_ops = &alsa_pcm_ops, diff --git a/audio/audio_legacy.c b/audio/audio_legacy.c index e094b2bd61..5117bdecb7 100644 --- a/audio/audio_legacy.c +++ b/audio/audio_legacy.c @@ -62,6 +62,18 @@ static void get_int(const char *env, uint32_t *dst, bool *has_dst) } } +static void get_str(const char *env, char **dst, bool *has_dst) +{ + const char *val = getenv(env); + if (val) { + if (*has_dst) { + g_free(*dst); + } + *dst = g_strdup(val); + *has_dst = true; + } +} + static void get_fmt(const char *env, AudioFormat *dst, bool *has_dst) { const char *val = getenv(env); @@ -80,8 +92,79 @@ static void get_fmt(const char *env, AudioFormat *dst, bool *has_dst) } } + +static void get_millis_to_usecs(const char *env, uint32_t *dst, bool *has_dst) +{ + const char *val = getenv(env); + if (val) { + *dst = toui32(val) * 1000; + *has_dst = true; + } +} + +static uint32_t frames_to_usecs(uint32_t frames, + AudiodevPerDirectionOptions *pdo) +{ + uint32_t freq = pdo->has_frequency ? pdo->frequency : 44100; + return (frames * 1000000 + freq / 2) / freq; +} + /* backend specific functions */ -/* todo */ +/* ALSA */ +static void handle_alsa_per_direction( + AudiodevPerDirectionOptions *pdo, AudiodevAlsaPerDirectionOptions **apdo, + bool *has_apdo, const char *prefix) +{ + char buf[64]; + size_t len = strlen(prefix); + bool size_in_usecs = false; + uint32_t buffer_size; + bool has_buffer_size = false; + bool dummy; + + *apdo = g_malloc0(sizeof(AudiodevAlsaPerDirectionOptions)); + *has_apdo = true; + + memcpy(buf, prefix, len); + strcpy(buf + len, "TRY_POLL"); + get_bool(buf, &(*apdo)->try_poll, &(*apdo)->has_try_poll); + + strcpy(buf + len, "DEV"); + get_str(buf, &(*apdo)->dev, &(*apdo)->has_dev); + + strcpy(buf + len, "SIZE_IN_USEC"); + get_bool(buf, &size_in_usecs, &dummy); + + strcpy(buf + len, "PERIOD_SIZE"); + get_int(buf, &pdo->buffer_len, &pdo->has_buffer_len); + + if (pdo->has_buffer_len && !size_in_usecs) { + pdo->buffer_len = frames_to_usecs(pdo->buffer_len, pdo); + } + + strcpy(buf + len, "BUFFER_SIZE"); + get_int(buf, &buffer_size, &has_buffer_size); + if (has_buffer_size) { + if (!size_in_usecs) { + buffer_size = frames_to_usecs(buffer_size, pdo); + } + + pdo->buffer_count = buffer_size; + pdo->has_buffer_count = true; + } +} + +static void handle_alsa(Audiodev *dev) +{ + AudiodevAlsaOptions *aopt = &dev->u.alsa; + handle_alsa_per_direction(dev->in, &aopt->alsa_in, &aopt->has_alsa_in, + "QEMU_ALSA_ADC_"); + handle_alsa_per_direction(dev->out, &aopt->alsa_out, &aopt->has_alsa_out, + "QEMU_ALSA_DAC_"); + + get_millis_to_usecs("QEMU_ALSA_THRESHOLD", + &aopt->threshold, &aopt->has_threshold); +} /* general */ static void handle_per_direction( @@ -125,6 +208,15 @@ static AudiodevListEntry *legacy_opt(const char *drvname) get_int("QEMU_AUDIO_TIMER_PERIOD", &e->dev->timer_period, &e->dev->has_timer_period); + switch (e->dev->driver) { + case AUDIODEV_DRIVER_ALSA: + handle_alsa(e->dev); + break; + + default: + break; + } + return e; } -- 2.20.1