diff options
| -rw-r--r-- | audio/alsaaudio.c | 150 |
1 files changed, 82 insertions, 68 deletions
diff --git a/audio/alsaaudio.c b/audio/alsaaudio.c index 5a5bb1445d..4bcf58f3e3 100644 --- a/audio/alsaaudio.c +++ b/audio/alsaaudio.c @@ -33,9 +33,29 @@ #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; + int verbose; +} ALSAConf; + struct pollhlp { snd_pcm_t *handle; struct pollfd *pfds; + ALSAConf *conf; int count; int mask; }; @@ -56,30 +76,6 @@ typedef struct ALSAVoiceIn { struct pollhlp pollhlp; } ALSAVoiceIn; -static struct { - 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; - int verbose; -} conf = { - .buffer_size_out = 4096, - .period_size_out = 1024, - .pcm_name_out = "default", - .pcm_name_in = "default", -}; - struct alsa_params_req { int freq; snd_pcm_format_t fmt; @@ -184,6 +180,7 @@ static void alsa_poll_handler (void *opaque) snd_pcm_state_t state; struct pollhlp *hlp = opaque; unsigned short revents; + ALSAConf *conf = hlp->conf; count = poll (hlp->pfds, hlp->count, 0); if (count < 0) { @@ -205,7 +202,7 @@ static void alsa_poll_handler (void *opaque) } if (!(revents & hlp->mask)) { - if (conf.verbose) { + if (conf->verbose) { dolog ("revents = %d\n", revents); } return; @@ -242,6 +239,7 @@ static int alsa_poll_helper (snd_pcm_t *handle, struct pollhlp *hlp, int mask) { int i, count, err; struct pollfd *pfds; + ALSAConf *conf = hlp->conf; count = snd_pcm_poll_descriptors_count (handle); if (count <= 0) { @@ -269,12 +267,12 @@ static int alsa_poll_helper (snd_pcm_t *handle, struct pollhlp *hlp, int mask) qemu_set_fd_handler (pfds[i].fd, alsa_poll_handler, NULL, hlp); } if (pfds[i].events & POLLOUT) { - if (conf.verbose) { + if (conf->verbose) { dolog ("POLLOUT %d %d\n", i, pfds[i].fd); } qemu_set_fd_handler (pfds[i].fd, NULL, alsa_poll_handler, hlp); } - if (conf.verbose) { + if (conf->verbose) { dolog ("Set handler events=%#x index=%d fd=%d err=%d\n", pfds[i].events, i, pfds[i].fd, err); } @@ -464,14 +462,15 @@ 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) + struct alsa_params_obt *obt, snd_pcm_t **handlep, + ALSAConf *conf) { 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 = in ? conf->pcm_name_in : conf->pcm_name_out; snd_pcm_uframes_t obt_buffer_size; const char *typ = in ? "ADC" : "DAC"; snd_pcm_format_t obtfmt; @@ -510,7 +509,7 @@ static int alsa_open (int in, struct alsa_params_req *req, } err = snd_pcm_hw_params_set_format (handle, hw_params, req->fmt); - if (err < 0 && conf.verbose) { + if (err < 0 && conf->verbose) { alsa_logerr2 (err, typ, "Failed to set format %d\n", req->fmt); } @@ -642,7 +641,7 @@ static int alsa_open (int in, struct alsa_params_req *req, goto err; } - if (!in && conf.threshold) { + if (!in && conf->threshold) { snd_pcm_uframes_t threshold; int bytes_per_sec; @@ -664,7 +663,7 @@ static int alsa_open (int in, struct alsa_params_req *req, break; } - threshold = (conf.threshold * bytes_per_sec) / 1000; + threshold = (conf->threshold * bytes_per_sec) / 1000; alsa_set_threshold (handle, threshold); } @@ -674,7 +673,7 @@ static int alsa_open (int in, struct alsa_params_req *req, *handlep = handle; - if (conf.verbose && + if (conf->verbose && (obtfmt != req->fmt || obt->nchannels != req->nchannels || obt->freq != req->freq)) { @@ -717,6 +716,7 @@ static snd_pcm_sframes_t alsa_get_avail (snd_pcm_t *handle) static void alsa_write_pending (ALSAVoiceOut *alsa) { HWVoiceOut *hw = &alsa->hw; + ALSAConf *conf = alsa->pollhlp.conf; while (alsa->pending) { int left_till_end_samples = hw->samples - alsa->wpos; @@ -731,7 +731,7 @@ static void alsa_write_pending (ALSAVoiceOut *alsa) if (written <= 0) { switch (written) { case 0: - if (conf.verbose) { + if (conf->verbose) { dolog ("Failed to write %d frames (wrote zero)\n", len); } return; @@ -742,7 +742,7 @@ static void alsa_write_pending (ALSAVoiceOut *alsa) len); return; } - if (conf.verbose) { + if (conf->verbose) { dolog ("Recovering from playback xrun\n"); } continue; @@ -755,7 +755,7 @@ static void alsa_write_pending (ALSAVoiceOut *alsa) len); return; } - if (conf.verbose) { + if (conf->verbose) { dolog ("Resuming suspended output stream\n"); } continue; @@ -815,18 +815,19 @@ 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; 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.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); + (conf->period_size_out_overridden ? 1 : 0) | + (conf->buffer_size_out_overridden ? 2 : 0); - if (alsa_open (0, &req, &obt, &handle)) { + if (alsa_open (0, &req, &obt, &handle, conf)) { return -1; } @@ -847,6 +848,7 @@ static int alsa_init_out(HWVoiceOut *hw, struct audsettings *as, } alsa->handle = handle; + alsa->pollhlp.conf = conf; return 0; } @@ -924,18 +926,19 @@ 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; 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.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); + (conf->period_size_in_overridden ? 1 : 0) | + (conf->buffer_size_in_overridden ? 2 : 0); - if (alsa_open (1, &req, &obt, &handle)) { + if (alsa_open (1, &req, &obt, &handle, conf)) { return -1; } @@ -956,6 +959,7 @@ static int alsa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) } alsa->handle = handle; + alsa->pollhlp.conf = conf; return 0; } @@ -986,6 +990,7 @@ static int alsa_run_in (HWVoiceIn *hw) }; snd_pcm_sframes_t avail; snd_pcm_uframes_t read_samples = 0; + ALSAConf *conf = alsa->pollhlp.conf; if (!dead) { return 0; @@ -1011,12 +1016,12 @@ static int alsa_run_in (HWVoiceIn *hw) dolog ("Failed to resume suspended input stream\n"); return 0; } - if (conf.verbose) { + if (conf->verbose) { dolog ("Resuming suspended input stream\n"); } break; default: - if (conf.verbose) { + if (conf->verbose) { dolog ("No frames available and ALSA state is %d\n", state); } return 0; @@ -1053,7 +1058,7 @@ static int alsa_run_in (HWVoiceIn *hw) if (nread <= 0) { switch (nread) { case 0: - if (conf.verbose) { + if (conf->verbose) { dolog ("Failed to read %ld frames (read zero)\n", len); } goto exit; @@ -1063,7 +1068,7 @@ static int alsa_run_in (HWVoiceIn *hw) alsa_logerr (nread, "Failed to read %ld frames\n", len); goto exit; } - if (conf.verbose) { + if (conf->verbose) { dolog ("Recovering from capture xrun\n"); } continue; @@ -1137,80 +1142,89 @@ 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_audio_init (void) { - return &conf; + ALSAConf *conf = g_malloc(sizeof(ALSAConf)); + *conf = glob_conf; + return conf; } static void alsa_audio_fini (void *opaque) { - (void) opaque; + g_free(opaque); } static struct audio_option alsa_options[] = { { .name = "DAC_SIZE_IN_USEC", .tag = AUD_OPT_BOOL, - .valp = &conf.size_in_usec_out, + .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 = &conf.period_size_out, + .valp = &glob_conf.period_size_out, .descr = "DAC period size (0 to go with system default)", - .overriddenp = &conf.period_size_out_overridden + .overriddenp = &glob_conf.period_size_out_overridden }, { .name = "DAC_BUFFER_SIZE", .tag = AUD_OPT_INT, - .valp = &conf.buffer_size_out, + .valp = &glob_conf.buffer_size_out, .descr = "DAC buffer size (0 to go with system default)", - .overriddenp = &conf.buffer_size_out_overridden + .overriddenp = &glob_conf.buffer_size_out_overridden }, { .name = "ADC_SIZE_IN_USEC", .tag = AUD_OPT_BOOL, - .valp = &conf.size_in_usec_in, + .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 = &conf.period_size_in, + .valp = &glob_conf.period_size_in, .descr = "ADC period size (0 to go with system default)", - .overriddenp = &conf.period_size_in_overridden + .overriddenp = &glob_conf.period_size_in_overridden }, { .name = "ADC_BUFFER_SIZE", .tag = AUD_OPT_INT, - .valp = &conf.buffer_size_in, + .valp = &glob_conf.buffer_size_in, .descr = "ADC buffer size (0 to go with system default)", - .overriddenp = &conf.buffer_size_in_overridden + .overriddenp = &glob_conf.buffer_size_in_overridden }, { .name = "THRESHOLD", .tag = AUD_OPT_INT, - .valp = &conf.threshold, + .valp = &glob_conf.threshold, .descr = "(undocumented)" }, { .name = "DAC_DEV", .tag = AUD_OPT_STR, - .valp = &conf.pcm_name_out, + .valp = &glob_conf.pcm_name_out, .descr = "DAC device name (for instance dmix)" }, { .name = "ADC_DEV", .tag = AUD_OPT_STR, - .valp = &conf.pcm_name_in, + .valp = &glob_conf.pcm_name_in, .descr = "ADC device name" }, { .name = "VERBOSE", .tag = AUD_OPT_BOOL, - .valp = &conf.verbose, + .valp = &glob_conf.verbose, .descr = "Behave in a more verbose way" }, { /* End of list */ } |