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https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-04 13:29:59 -05:00
Completely rework ALSA device selection code: choose the device to open depending on the requested number of channels and channel map. In most cases it will now suffice to set default-channels=6 to enable 5.1 sound for all devices that support it
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2050 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering
parent
f752882525
commit
d17bb53d3e
15 changed files with 350 additions and 122 deletions
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@ -58,6 +58,7 @@ PA_MODULE_LOAD_ONCE(FALSE);
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PA_MODULE_USAGE(
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"source_name=<name for the source> "
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"device=<ALSA device> "
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"device_id=<ALSA device id> "
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"format=<sample format> "
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"channels=<number of channels> "
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"rate=<sample rate> "
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@ -89,13 +90,14 @@ struct userdata {
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char *device_name;
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int use_mmap;
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pa_bool_t use_mmap;
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pa_rtpoll_item *alsa_rtpoll_item;
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};
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static const char* const valid_modargs[] = {
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"device",
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"device_id",
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"source_name",
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"channels",
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"rate",
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@ -342,7 +344,8 @@ static int suspend(struct userdata *u) {
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static int unsuspend(struct userdata *u) {
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pa_sample_spec ss;
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int err, b;
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int err;
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pa_bool_t b;
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unsigned nfrags;
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snd_pcm_uframes_t period_size;
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@ -362,7 +365,7 @@ static int unsuspend(struct userdata *u) {
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period_size = u->fragment_size / u->frame_size;
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b = u->use_mmap;
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if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, &b)) < 0) {
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if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, &b, TRUE)) < 0) {
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pa_log("Failed to set hardware parameters: %s", snd_strerror(err));
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goto fail;
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}
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@ -691,10 +694,10 @@ int pa__init(pa_module*m) {
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pa_modargs *ma = NULL;
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struct userdata *u = NULL;
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char *dev;
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const char *dev_id;
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pa_sample_spec ss;
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pa_channel_map map;
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unsigned nfrags, frag_size;
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uint32_t nfrags, frag_size;
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snd_pcm_uframes_t period_size;
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size_t frame_size;
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snd_pcm_info_t *pcm_info = NULL;
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@ -703,7 +706,7 @@ int pa__init(pa_module*m) {
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const char *name;
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char *name_buf = NULL;
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int namereg_fail;
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int use_mmap = 1, b;
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pa_bool_t use_mmap = TRUE, b;
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snd_pcm_info_alloca(&pcm_info);
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@ -750,43 +753,31 @@ int pa__init(pa_module*m) {
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snd_config_update_free_global();
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dev = pa_xstrdup(pa_modargs_get_value(ma, "device", DEFAULT_DEVICE));
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if ((dev_id = pa_modargs_get_value(ma, "device_id", NULL))) {
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for (;;) {
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if ((err = snd_pcm_open(&u->pcm_handle, dev, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK)) < 0) {
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pa_log("Error opening PCM device %s: %s", dev, snd_strerror(err));
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pa_xfree(dev);
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if (!(u->pcm_handle = pa_alsa_open_by_device_id(
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dev_id,
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&u->device_name,
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&ss, &map,
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SND_PCM_STREAM_CAPTURE,
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&nfrags, &period_size,
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&b)))
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goto fail;
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}
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b = use_mmap;
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if ((err = pa_alsa_set_hw_params(u->pcm_handle, &ss, &nfrags, &period_size, &b)) < 0) {
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} else {
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if (err == -EPERM) {
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/* Hmm, some hw is very exotic, so we retry with plughw, if hw didn't work */
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if (pa_startswith(dev, "hw:")) {
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char *d = pa_sprintf_malloc("plughw:%s", dev+3);
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pa_log_debug("Opening the device as '%s' didn't work, retrying with '%s'.", dev, d);
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pa_xfree(dev);
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dev = d;
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snd_pcm_close(u->pcm_handle);
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u->pcm_handle = NULL;
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continue;
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}
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}
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pa_log("Failed to set hardware parameters: %s", snd_strerror(err));
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pa_xfree(dev);
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if (!(u->pcm_handle = pa_alsa_open_by_device_string(
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pa_modargs_get_value(ma, "device", DEFAULT_DEVICE),
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&u->device_name,
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&ss, &map,
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SND_PCM_STREAM_CAPTURE,
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&nfrags, &period_size,
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&b)))
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goto fail;
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}
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break;
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}
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u->device_name = dev;
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pa_assert(u->device_name);
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pa_log_info("Successfully opened device %s.", u->device_name);
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if (use_mmap && !b) {
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pa_log_info("Device doesn't support mmap(), falling back to UNIX read/write mode.");
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@ -817,7 +808,7 @@ int pa__init(pa_module*m) {
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pa_log("Error opening mixer: %s", snd_strerror(err));
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else {
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if ((pa_alsa_prepare_mixer(u->mixer_handle, dev) < 0) ||
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if ((pa_alsa_prepare_mixer(u->mixer_handle, u->device_name) < 0) ||
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!(u->mixer_elem = pa_alsa_find_elem(u->mixer_handle, "Capture", NULL))) {
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snd_mixer_close(u->mixer_handle);
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u->mixer_handle = NULL;
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@ -827,7 +818,7 @@ int pa__init(pa_module*m) {
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if ((name = pa_modargs_get_value(ma, "source_name", NULL)))
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namereg_fail = 1;
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else {
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name = name_buf = pa_sprintf_malloc("alsa_input.%s", dev);
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name = name_buf = pa_sprintf_malloc("alsa_input.%s", u->device_name);
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namereg_fail = 0;
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}
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@ -847,7 +838,7 @@ int pa__init(pa_module*m) {
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pa_source_set_rtpoll(u->source, u->rtpoll);
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pa_source_set_description(u->source, t = pa_sprintf_malloc(
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"ALSA PCM on %s (%s)%s",
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dev,
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u->device_name,
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snd_pcm_info_get_name(pcm_info),
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use_mmap ? " via DMA" : ""));
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pa_xfree(t);
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