diff options
Diffstat (limited to 'src/modules/module-alsa-source.c')
| -rw-r--r-- | src/modules/module-alsa-source.c | 145 |
1 files changed, 72 insertions, 73 deletions
diff --git a/src/modules/module-alsa-source.c b/src/modules/module-alsa-source.c index 82f66bb9..de019ffb 100644 --- a/src/modules/module-alsa-source.c +++ b/src/modules/module-alsa-source.c @@ -71,7 +71,7 @@ struct userdata { pa_core *core; pa_module *module; pa_source *source; - + pa_thread *thread; pa_thread_mq thread_mq; pa_rtpoll *rtpoll; @@ -108,7 +108,7 @@ static const char* const valid_modargs[] = { static int mmap_read(struct userdata *u) { int work_done = 0; - + pa_assert(u); pa_source_assert_ref(u->source); @@ -119,31 +119,31 @@ static int mmap_read(struct userdata *u) { snd_pcm_uframes_t offset, frames; pa_memchunk chunk; void *p; - + if ((n = snd_pcm_avail_update(u->pcm_handle)) < 0) { if (n == -EPIPE) pa_log_debug("snd_pcm_avail_update: Buffer underrun!"); - + if ((err = snd_pcm_recover(u->pcm_handle, n, 1)) == 0) continue; if (err == -EAGAIN) return work_done; - + pa_log("snd_pcm_avail_update: %s", snd_strerror(err)); return -1; } /* pa_log("Got request for %i samples", (int) n); */ - + if (n <= 0) return work_done; frames = n; - + if ((err = snd_pcm_mmap_begin(u->pcm_handle, &areas, &offset, &frames)) < 0) { - + if (err == -EPIPE) pa_log_debug("snd_pcm_mmap_begin: Buffer underrun!"); @@ -166,7 +166,7 @@ static int mmap_read(struct userdata *u) { pa_assert((areas[0].step >> 3) == u->frame_size); p = (uint8_t*) areas[0].addr + (offset * u->frame_size); - + chunk.memblock = pa_memblock_new_fixed(u->core->mempool, p, frames * u->frame_size, 1); chunk.length = pa_memblock_get_length(chunk.memblock); chunk.index = 0; @@ -181,13 +181,13 @@ static int mmap_read(struct userdata *u) { if (err == -EPIPE) pa_log_debug("snd_pcm_mmap_commit: Buffer underrun!"); - + if ((err = snd_pcm_recover(u->pcm_handle, err, 1)) == 0) continue; - + if (err == -EAGAIN) return work_done; - + pa_log("Failed to write data to DSP: %s", snd_strerror(err)); return -1; } @@ -213,7 +213,7 @@ static int unix_read(struct userdata *u) { ssize_t l; int err; pa_memchunk chunk; - + if ((err = snd_pcm_status(u->pcm_handle, status)) < 0) { pa_log("Failed to query DSP status data: %s", snd_strerror(err)); return -1; @@ -221,12 +221,12 @@ static int unix_read(struct userdata *u) { if (snd_pcm_status_get_avail_max(status)*u->frame_size >= u->hwbuf_size) pa_log_debug("Buffer overrun!"); - + l = snd_pcm_status_get_avail(status) * u->frame_size; if (l <= 0) return work_done; - + chunk.memblock = pa_memblock_new(u->core->mempool, (size_t) -1); k = pa_memblock_get_length(chunk.memblock); @@ -239,17 +239,17 @@ static int unix_read(struct userdata *u) { p = pa_memblock_acquire(chunk.memblock); t = snd_pcm_readi(u->pcm_handle, (uint8_t*) p, k / u->frame_size); pa_memblock_release(chunk.memblock); - + /* pa_log("wrote %i bytes of %u (%u)", t*u->frame_size, u->memchunk.length, l); */ - + pa_assert(t != 0); - + if (t < 0) { pa_memblock_unref(chunk.memblock); - + if ((t = snd_pcm_recover(u->pcm_handle, t, 1)) == 0) continue; - + if (t == -EAGAIN) { pa_log_debug("EAGAIN"); return work_done; @@ -257,14 +257,14 @@ static int unix_read(struct userdata *u) { pa_log("Failed to read data from DSP: %s", snd_strerror(t)); return -1; } - } - + } + chunk.index = 0; chunk.length = t * u->frame_size; pa_source_post(u->source, &chunk); pa_memblock_unref(chunk.memblock); - + work_done = 1; if (t * u->frame_size >= (unsigned) l) @@ -279,11 +279,11 @@ static pa_usec_t source_get_latency(struct userdata *u) { int err; snd_pcm_status_alloca(&status); - + pa_assert(u); pa_assert(u->pcm_handle); - if ((err = snd_pcm_status(u->pcm_handle, status)) < 0) + if ((err = snd_pcm_status(u->pcm_handle, status)) < 0) pa_log("Failed to get delay: %s", snd_strerror(err)); else frames = snd_pcm_status_get_delay(status); @@ -298,7 +298,7 @@ static int build_pollfd(struct userdata *u) { int err; struct pollfd *pollfd; int n; - + pa_assert(u); pa_assert(u->pcm_handle); @@ -312,12 +312,12 @@ static int build_pollfd(struct userdata *u) { u->alsa_rtpoll_item = pa_rtpoll_item_new(u->rtpoll, PA_RTPOLL_NEVER, n); pollfd = pa_rtpoll_item_get_pollfd(u->alsa_rtpoll_item, NULL); - + if ((err = snd_pcm_poll_descriptors(u->pcm_handle, pollfd, n)) < 0) { pa_log("snd_pcm_poll_descriptors() failed: %s", snd_strerror(err)); return -1; } - + return 0; } @@ -333,9 +333,9 @@ static int suspend(struct userdata *u) { pa_rtpoll_item_free(u->alsa_rtpoll_item); u->alsa_rtpoll_item = NULL; } - + pa_log_info("Device suspended..."); - + return 0; } @@ -360,7 +360,7 @@ static int unsuspend(struct userdata *u) { nfrags = u->nfragments; period_size = u->fragment_size / u->frame_size; b = u->use_mmap; - + if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, &b)) < 0) { pa_log("Failed to set hardware parameters: %s", snd_strerror(err)); goto fail; @@ -370,7 +370,7 @@ static int unsuspend(struct userdata *u) { pa_log_warn("Resume failed, couldn't get original access mode."); goto fail; } - + if (!pa_sample_spec_equal(&ss, &u->source->sample_spec)) { pa_log_warn("Resume failed, couldn't restore original sample settings."); goto fail; @@ -388,11 +388,11 @@ static int unsuspend(struct userdata *u) { if (build_pollfd(u) < 0) goto fail; - + snd_pcm_start(u->pcm_handle); - + /* FIXME: We need to reload the volume somehow */ - + pa_log_info("Resumed successfully..."); return 0; @@ -425,13 +425,13 @@ static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t off case PA_SOURCE_MESSAGE_SET_STATE: switch ((pa_source_state_t) PA_PTR_TO_UINT(data)) { - + case PA_SOURCE_SUSPENDED: pa_assert(PA_SOURCE_OPENED(u->source->thread_info.state)); if (suspend(u) < 0) return -1; - + break; case PA_SOURCE_IDLE: @@ -441,14 +441,14 @@ static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t off if (unsuspend(u) < 0) return -1; } - + break; case PA_SOURCE_UNLINKED: case PA_SOURCE_INIT: ; } - + break; } @@ -499,7 +499,7 @@ static int source_get_volume_cb(pa_source *s) { fail: pa_log_error("Unable to read volume: %s", snd_strerror(err)); - + s->get_volume = NULL; s->set_volume = NULL; return -1; @@ -534,7 +534,7 @@ static int source_set_volume_cb(pa_source *s) { fail: pa_log_error("Unable to set volume: %s", snd_strerror(err)); - + s->get_volume = NULL; s->set_volume = NULL; return -1; @@ -569,7 +569,7 @@ static int source_set_mute_cb(pa_source *s) { if ((err = snd_mixer_selem_set_capture_switch_all(u->mixer_elem, !s->muted)) < 0) { pa_log_error("Unable to set switch: %s", snd_strerror(err)); - + s->get_mute = NULL; s->set_mute = NULL; return -1; @@ -590,18 +590,18 @@ static void thread_func(void *userdata) { pa_thread_mq_install(&u->thread_mq); pa_rtpoll_install(u->rtpoll); - + if (build_pollfd(u) < 0) goto fail; snd_pcm_start(u->pcm_handle); - + for (;;) { int ret; /* Read some data and pass it to the sources */ if (PA_SOURCE_OPENED(u->source->thread_info.state)) { - + if (u->use_mmap) { if (mmap_read(u) < 0) goto fail; @@ -618,7 +618,7 @@ static void thread_func(void *userdata) { if (ret == 0) goto finish; - + /* Tell ALSA about this and process its response */ if (PA_SOURCE_OPENED(u->source->thread_info.state)) { struct pollfd *pollfd; @@ -627,7 +627,7 @@ static void thread_func(void *userdata) { unsigned n; pollfd = pa_rtpoll_item_get_pollfd(u->alsa_rtpoll_item, &n); - + if ((err = snd_pcm_poll_descriptors_revents(u->pcm_handle, pollfd, n, &revents)) < 0) { pa_log("snd_pcm_poll_descriptors_revents() failed: %s", snd_strerror(err)); goto fail; @@ -637,7 +637,7 @@ static void thread_func(void *userdata) { if (revents & POLLERR) pa_log_warn("Got POLLERR from ALSA"); if (revents & POLLNVAL) - pa_log_warn("Got POLLNVAL from ALSA"); + pa_log_warn("Got POLLNVAL from ALSA"); if (revents & POLLHUP) pa_log_warn("Got POLLHUP from ALSA"); @@ -657,7 +657,7 @@ finish: } int pa__init(pa_module*m) { - + pa_modargs *ma = NULL; struct userdata *u = NULL; char *dev; @@ -677,7 +677,7 @@ int pa__init(pa_module*m) { snd_pcm_info_alloca(&pcm_info); pa_assert(m); - + if (!(ma = pa_modargs_new(m->argument, valid_modargs))) { pa_log("Failed to parse module arguments"); goto fail; @@ -706,7 +706,7 @@ int pa__init(pa_module*m) { pa_log("Failed to parse mmap argument."); goto fail; } - + u = pa_xnew0(struct userdata, 1); u->core = m->core; u->module = m; @@ -720,9 +720,9 @@ int pa__init(pa_module*m) { snd_config_update_free_global(); dev = pa_xstrdup(pa_modargs_get_value(ma, "device", DEFAULT_DEVICE)); - + for (;;) { - + if ((err = snd_pcm_open(&u->pcm_handle, dev, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK)) < 0) { pa_log("Error opening PCM device %s: %s", dev, snd_strerror(err)); pa_xfree(dev); @@ -734,7 +734,7 @@ int pa__init(pa_module*m) { if (err == -EPERM) { /* Hmm, some hw is very exotic, so we retry with plughw, if hw didn't work */ - + if (pa_startswith(dev, "hw:")) { char *d = pa_sprintf_malloc("plughw:%s", dev+3); pa_log_debug("Opening the device as '%s' didn't work, retrying with '%s'.", dev, d); @@ -746,7 +746,7 @@ int pa__init(pa_module*m) { continue; } } - + pa_log("Failed to set hardware parameters: %s", snd_strerror(err)); pa_xfree(dev); goto fail; @@ -756,7 +756,7 @@ int pa__init(pa_module*m) { } u->device_name = dev; - + if (use_mmap && !b) { pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode."); u->use_mmap = use_mmap = b; @@ -774,7 +774,7 @@ int pa__init(pa_module*m) { pa_log("Failed to set software parameters: %s", snd_strerror(err)); goto fail; } - + /* ALSA might tweak the sample spec, so recalculate the frame size */ frame_size = pa_frame_size(&ss); @@ -785,7 +785,7 @@ int pa__init(pa_module*m) { if ((err = snd_mixer_open(&u->mixer_handle, 0)) < 0) pa_log("Error opening mixer: %s", snd_strerror(err)); else { - + if ((pa_alsa_prepare_mixer(u->mixer_handle, dev) < 0) || !(u->mixer_elem = pa_alsa_find_elem(u->mixer_handle, "Capture", NULL))) { snd_mixer_close(u->mixer_handle); @@ -802,7 +802,7 @@ int pa__init(pa_module*m) { u->source = pa_source_new(m->core, __FILE__, name, namereg_fail, &ss, &map); pa_xfree(name_buf); - + if (!u->source) { pa_log("Failed to create source object"); goto fail; @@ -821,7 +821,7 @@ int pa__init(pa_module*m) { use_mmap ? " via DMA" : "")); pa_xfree(t); - u->source->flags = PA_SOURCE_HARDWARE|PA_SOURCE_CAN_SUSPEND|PA_SOURCE_LATENCY|PA_SOURCE_HW_VOLUME_CTRL; + u->source->flags = PA_SOURCE_HARDWARE|PA_SOURCE_LATENCY|PA_SOURCE_HW_VOLUME_CTRL; u->frame_size = frame_size; u->fragment_size = frag_size = period_size * frame_size; @@ -832,7 +832,7 @@ int pa__init(pa_module*m) { if (u->mixer_handle) { pa_assert(u->mixer_elem); - + if (snd_mixer_selem_has_capture_volume(u->mixer_elem)) { int i; @@ -847,19 +847,19 @@ int pa__init(pa_module*m) { snd_mixer_selem_get_capture_volume_range(u->mixer_elem, &u->hw_volume_min, &u->hw_volume_max); } } - + if (snd_mixer_selem_has_capture_switch(u->mixer_elem)) { u->source->get_mute = source_get_mute_cb; u->source->set_mute = source_set_mute_cb; } u->mixer_fdl = pa_alsa_fdlist_new(); - + if (pa_alsa_fdlist_set_mixer(u->mixer_fdl, u->mixer_handle, m->core->mainloop) < 0) { pa_log("failed to initialise file descriptor monitoring"); goto fail; } - + snd_mixer_elem_set_callback(u->mixer_elem, mixer_callback); snd_mixer_elem_set_callback_private(u->mixer_elem, u); } else @@ -875,25 +875,25 @@ int pa__init(pa_module*m) { if (u->source->get_mute) u->source->get_mute(u->source); - pa_source_put(u->source); - + pa_source_put(u->source); + pa_modargs_free(ma); - + return 0; - + fail: if (ma) pa_modargs_free(ma); pa__done(m); - + return -1; } void pa__done(pa_module*m) { struct userdata *u; - + pa_assert(m); if (!(u = m->userdata)) @@ -914,10 +914,10 @@ void pa__done(pa_module*m) { if (u->alsa_rtpoll_item) pa_rtpoll_item_free(u->alsa_rtpoll_item); - + if (u->rtpoll) pa_rtpoll_free(u->rtpoll); - + if (u->mixer_fdl) pa_alsa_fdlist_free(u->mixer_fdl); @@ -934,4 +934,3 @@ void pa__done(pa_module*m) { snd_config_update_free_global(); } - |