X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=audio%2Falsaaudio.c;h=3745c823ad373ec58360696f41b23c2240528ca4;hb=c4107e8208d0222f9b328691b519aaee4101db87;hp=92a96f8b2bb2a835b7cc539611217921cf24f842;hpb=1e5caa0e230081b49f8b8399ed30670aa94fdafb;p=mirror_qemu.git diff --git a/audio/alsaaudio.c b/audio/alsaaudio.c index 92a96f8b2b..3745c823ad 100644 --- a/audio/alsaaudio.c +++ b/audio/alsaaudio.c @@ -21,42 +21,22 @@ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ + #include "qemu/osdep.h" #include -#include "qemu-common.h" #include "qemu/main-loop.h" +#include "qemu/module.h" #include "audio.h" #include "trace.h" -#if QEMU_GNUC_PREREQ(4, 3) #pragma GCC diagnostic ignored "-Waddress" -#endif #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; }; @@ -68,6 +48,7 @@ typedef struct ALSAVoiceOut { void *pcm_buf; snd_pcm_t *handle; struct pollhlp pollhlp; + Audiodev *dev; } ALSAVoiceOut; typedef struct ALSAVoiceIn { @@ -75,21 +56,18 @@ 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 { int freq; - audfmt_e fmt; + AudioFormat fmt; int endianness; int nchannels; snd_pcm_uframes_t samples; @@ -296,16 +274,16 @@ static int alsa_write (SWVoiceOut *sw, void *buf, int len) return audio_pcm_sw_write (sw, buf, len); } -static snd_pcm_format_t aud_to_alsafmt (audfmt_e fmt, int endianness) +static snd_pcm_format_t aud_to_alsafmt (AudioFormat fmt, int endianness) { switch (fmt) { - case AUD_FMT_S8: + case AUDIO_FORMAT_S8: return SND_PCM_FORMAT_S8; - case AUD_FMT_U8: + case AUDIO_FORMAT_U8: return SND_PCM_FORMAT_U8; - case AUD_FMT_S16: + case AUDIO_FORMAT_S16: if (endianness) { return SND_PCM_FORMAT_S16_BE; } @@ -313,7 +291,7 @@ static snd_pcm_format_t aud_to_alsafmt (audfmt_e fmt, int endianness) return SND_PCM_FORMAT_S16_LE; } - case AUD_FMT_U16: + case AUDIO_FORMAT_U16: if (endianness) { return SND_PCM_FORMAT_U16_BE; } @@ -321,7 +299,7 @@ static snd_pcm_format_t aud_to_alsafmt (audfmt_e fmt, int endianness) return SND_PCM_FORMAT_U16_LE; } - case AUD_FMT_S32: + case AUDIO_FORMAT_S32: if (endianness) { return SND_PCM_FORMAT_S32_BE; } @@ -329,7 +307,7 @@ static snd_pcm_format_t aud_to_alsafmt (audfmt_e fmt, int endianness) return SND_PCM_FORMAT_S32_LE; } - case AUD_FMT_U32: + case AUDIO_FORMAT_U32: if (endianness) { return SND_PCM_FORMAT_U32_BE; } @@ -346,58 +324,58 @@ static snd_pcm_format_t aud_to_alsafmt (audfmt_e fmt, int endianness) } } -static int alsa_to_audfmt (snd_pcm_format_t alsafmt, audfmt_e *fmt, +static int alsa_to_audfmt (snd_pcm_format_t alsafmt, AudioFormat *fmt, int *endianness) { switch (alsafmt) { case SND_PCM_FORMAT_S8: *endianness = 0; - *fmt = AUD_FMT_S8; + *fmt = AUDIO_FORMAT_S8; break; case SND_PCM_FORMAT_U8: *endianness = 0; - *fmt = AUD_FMT_U8; + *fmt = AUDIO_FORMAT_U8; break; case SND_PCM_FORMAT_S16_LE: *endianness = 0; - *fmt = AUD_FMT_S16; + *fmt = AUDIO_FORMAT_S16; break; case SND_PCM_FORMAT_U16_LE: *endianness = 0; - *fmt = AUD_FMT_U16; + *fmt = AUDIO_FORMAT_U16; break; case SND_PCM_FORMAT_S16_BE: *endianness = 1; - *fmt = AUD_FMT_S16; + *fmt = AUDIO_FORMAT_S16; break; case SND_PCM_FORMAT_U16_BE: *endianness = 1; - *fmt = AUD_FMT_U16; + *fmt = AUDIO_FORMAT_U16; break; case SND_PCM_FORMAT_S32_LE: *endianness = 0; - *fmt = AUD_FMT_S32; + *fmt = AUDIO_FORMAT_S32; break; case SND_PCM_FORMAT_U32_LE: *endianness = 0; - *fmt = AUD_FMT_U32; + *fmt = AUDIO_FORMAT_U32; break; case SND_PCM_FORMAT_S32_BE: *endianness = 1; - *fmt = AUD_FMT_S32; + *fmt = AUDIO_FORMAT_S32; break; case SND_PCM_FORMAT_U32_BE: *endianness = 1; - *fmt = AUD_FMT_U32; + *fmt = AUDIO_FORMAT_U32; break; default: @@ -410,17 +388,18 @@ static int alsa_to_audfmt (snd_pcm_format_t alsafmt, audfmt_e *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, + AudiodevAlsaPerDirectionOptions *apdo) { - dolog ("parameter | requested value | obtained value\n"); - dolog ("format | %10d | %10d\n", req->fmt, obtfmt); - dolog ("channels | %10d | %10d\n", - 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 ("obtained: samples %ld\n", obt->samples); + dolog("parameter | requested value | obtained value\n"); + dolog("format | %10d | %10d\n", req->fmt, obtfmt); + dolog("channels | %10d | %10d\n", + req->nchannels, obt->nchannels); + dolog("frequency | %10d | %10d\n", req->freq, obt->freq); + dolog("============================================\n"); + dolog("requested: buffer len %" PRId32 " period len %" PRId32 "\n", + apdo->buffer_length, apdo->period_length); + dolog("obtained: samples %ld\n", obt->samples); } static void alsa_set_threshold (snd_pcm_t *handle, snd_pcm_uframes_t threshold) @@ -453,23 +432,23 @@ 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) { + AudiodevAlsaOptions *aopts = &dev->u.alsa; + AudiodevAlsaPerDirectionOptions *apdo = in ? aopts->in : aopts->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); @@ -529,79 +508,42 @@ static int alsa_open (int in, struct alsa_params_req *req, goto err; } - if (req->buffer_size) { - unsigned long obt; + if (apdo->buffer_length) { + int dir = 0; + unsigned int btime = apdo->buffer_length; - if (size_in_usec) { - int dir = 0; - unsigned int btime = req->buffer_size; + err = snd_pcm_hw_params_set_buffer_time_near( + handle, hw_params, &btime, &dir); - 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_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); + alsa_logerr2(err, typ, "Failed to set buffer time to %" PRId32 "\n", + apdo->buffer_length); 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 (apdo->has_buffer_length && btime != apdo->buffer_length) { + dolog("Requested buffer time %" PRId32 + " was rejected, using %u\n", apdo->buffer_length, btime); + } } - if (req->period_size) { - unsigned long obt; + if (apdo->period_length) { + int dir = 0; + unsigned int ptime = apdo->period_length; - 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", + apdo->period_length); 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 (apdo->has_period_length && ptime != apdo->period_length) { + dolog("Requested period time %" PRId32 " was rejected, using %d\n", + apdo->period_length, ptime); + } } err = snd_pcm_hw_params (handle, hw_params); @@ -633,30 +575,12 @@ 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 AUD_FMT_S8: - case AUD_FMT_U8: - break; - - case AUD_FMT_S16: - case AUD_FMT_U16: - bytes_per_sec <<= 1; - break; - - case AUD_FMT_S32: - case AUD_FMT_U32: - bytes_per_sec <<= 2; - break; - } - - 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(qapi_AudiodevAlsaPerDirectionOptions_base(apdo), + &as, aopts->threshold)); } obt->nchannels = nchannels; @@ -669,11 +593,11 @@ 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, apdo); } #ifdef DEBUG - alsa_dump_info (req, obt, obtfmt); + alsa_dump_info(req, obt, obtfmt, pdo); #endif return 0; @@ -799,19 +723,13 @@ 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; } @@ -832,7 +750,7 @@ static int alsa_init_out(HWVoiceOut *hw, struct audsettings *as, } alsa->handle = handle; - alsa->pollhlp.conf = conf; + alsa->dev = dev; return 0; } @@ -872,16 +790,12 @@ 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.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)) { @@ -910,19 +824,13 @@ 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; } @@ -943,7 +851,7 @@ 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; } @@ -1085,16 +993,12 @@ 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.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)) { @@ -1117,88 +1021,54 @@ 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) +{ + if (!apdo->has_try_poll) { + apdo->try_poll = true; + apdo->has_try_poll = true; + } +} -static void *alsa_audio_init (void) +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->in); + alsa_init_per_direction(aopts->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->u.alsa.out->has_period_length) { + /* 1024 frames assuming 44100Hz */ + dev->u.alsa.out->period_length = 1024 * 1000000 / 44100; + } + if (!dev->u.alsa.out->has_buffer_length) { + /* 4096 frames assuming 44100Hz */ + dev->u.alsa.out->buffer_length = 4096ll * 1000000 / 44100; + } + + /* + * OptsVisitor sets unspecified optional fields to zero, but do not depend + * on it... + */ + if (!dev->u.alsa.in->has_period_length) { + dev->u.alsa.in->period_length = 0; + } + if (!dev->u.alsa.in->has_buffer_length) { + dev->u.alsa.in->buffer_length = 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, @@ -1213,10 +1083,9 @@ static struct audio_pcm_ops alsa_pcm_ops = { .ctl_in = alsa_ctl_in, }; -struct audio_driver alsa_audio_driver = { +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, @@ -1226,3 +1095,9 @@ struct audio_driver alsa_audio_driver = { .voice_size_out = sizeof (ALSAVoiceOut), .voice_size_in = sizeof (ALSAVoiceIn) }; + +static void register_audio_alsa(void) +{ + audio_driver_register(&alsa_audio_driver); +} +type_init(register_audio_alsa);