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https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-04 13:29:59 -05:00
add card profile prober
This commit is contained in:
Lennart Poettering
parent
b2b2eb1ee7
commit
b4d80462bf
4 changed files with 208 additions and 52 deletions
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@ -314,8 +314,8 @@ int pa_alsa_set_hw_params(
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pa_bool_t require_exact_channel_number) {
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int ret = -1;
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snd_pcm_uframes_t _period_size = *period_size;
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unsigned int _periods = *periods;
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snd_pcm_uframes_t _period_size = period_size ? *period_size : 0;
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unsigned int _periods = periods ? *periods : 0;
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snd_pcm_uframes_t buffer_size;
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unsigned int r = ss->rate;
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unsigned int c = ss->channels;
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@ -327,8 +327,6 @@ int pa_alsa_set_hw_params(
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pa_assert(pcm_handle);
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pa_assert(ss);
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pa_assert(periods);
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pa_assert(period_size);
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snd_pcm_hw_params_alloca(&hwparams);
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@ -361,10 +359,6 @@ int pa_alsa_set_hw_params(
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if ((ret = snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams, &r, NULL)) < 0)
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goto finish;
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/* Adjust the buffer sizes, if we didn't get the rate we were asking for */
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_period_size = (snd_pcm_uframes_t) (((uint64_t) _period_size * r) / ss->rate);
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tsched_size = (snd_pcm_uframes_t) (((uint64_t) tsched_size * r) / ss->rate);
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if (require_exact_channel_number) {
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if ((ret = snd_pcm_hw_params_set_channels(pcm_handle, hwparams, c)) < 0)
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goto finish;
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@ -373,50 +367,56 @@ int pa_alsa_set_hw_params(
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goto finish;
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}
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if (_use_tsched) {
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_period_size = tsched_size;
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_periods = 1;
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pa_assert_se(snd_pcm_hw_params_get_buffer_size_max(hwparams, &buffer_size) == 0);
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pa_log_debug("Maximum hw buffer size is %u ms", (unsigned) buffer_size * 1000 / r);
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}
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buffer_size = _periods * _period_size;
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if ((ret = snd_pcm_hw_params_set_periods_integer(pcm_handle, hwparams)) < 0)
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goto finish;
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if (_periods > 0) {
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if (_period_size && tsched_size && _periods) {
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/* Adjust the buffer sizes, if we didn't get the rate we were asking for */
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_period_size = (snd_pcm_uframes_t) (((uint64_t) _period_size * r) / ss->rate);
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tsched_size = (snd_pcm_uframes_t) (((uint64_t) tsched_size * r) / ss->rate);
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/* First we pass 0 as direction to get exactly what we asked
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* for. That this is necessary is presumably a bug in ALSA */
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if (_use_tsched) {
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_period_size = tsched_size;
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_periods = 1;
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dir = 0;
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if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0) {
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dir = 1;
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pa_assert_se(snd_pcm_hw_params_get_buffer_size_max(hwparams, &buffer_size) == 0);
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pa_log_debug("Maximum hw buffer size is %u ms", (unsigned) buffer_size * 1000 / r);
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}
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buffer_size = _periods * _period_size;
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if (_periods > 0) {
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/* First we pass 0 as direction to get exactly what we asked
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* for. That this is necessary is presumably a bug in ALSA */
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dir = 0;
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if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0) {
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dir = -1;
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if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0)
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goto finish;
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dir = 1;
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if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0) {
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dir = -1;
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if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &_periods, &dir)) < 0)
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goto finish;
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}
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}
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}
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}
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if (_period_size > 0)
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if ((ret = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &buffer_size)) < 0)
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goto finish;
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if (_period_size > 0)
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if ((ret = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &buffer_size)) < 0)
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goto finish;
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}
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if ((ret = snd_pcm_hw_params(pcm_handle, hwparams)) < 0)
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goto finish;
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if (ss->rate != r)
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pa_log_warn("Device %s doesn't support %u Hz, changed to %u Hz.", snd_pcm_name(pcm_handle), ss->rate, r);
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pa_log_info("Device %s doesn't support %u Hz, changed to %u Hz.", snd_pcm_name(pcm_handle), ss->rate, r);
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if (ss->channels != c)
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pa_log_warn("Device %s doesn't support %u channels, changed to %u.", snd_pcm_name(pcm_handle), ss->channels, c);
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pa_log_info("Device %s doesn't support %u channels, changed to %u.", snd_pcm_name(pcm_handle), ss->channels, c);
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if (ss->format != f)
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pa_log_warn("Device %s doesn't support sample format %s, changed to %s.", snd_pcm_name(pcm_handle), pa_sample_format_to_string(ss->format), pa_sample_format_to_string(f));
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pa_log_info("Device %s doesn't support sample format %s, changed to %s.", snd_pcm_name(pcm_handle), pa_sample_format_to_string(ss->format), pa_sample_format_to_string(f));
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if ((ret = snd_pcm_prepare(pcm_handle)) < 0)
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goto finish;
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@ -434,8 +434,11 @@ int pa_alsa_set_hw_params(
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pa_assert(_periods > 0);
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pa_assert(_period_size > 0);
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*periods = _periods;
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*period_size = _period_size;
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if (periods)
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*periods = _periods;
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if (period_size)
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*period_size = _period_size;
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if (use_mmap)
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*use_mmap = _use_mmap;
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@ -488,14 +491,7 @@ int pa_alsa_set_sw_params(snd_pcm_t *pcm, snd_pcm_uframes_t avail_min) {
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return 0;
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}
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struct device_info {
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pa_channel_map map;
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const char *alsa_name;
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const char *description;
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const char *name;
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};
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static const struct device_info device_table[] = {
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static const struct pa_alsa_profile_info device_table[] = {
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{{ 1, { PA_CHANNEL_POSITION_MONO }},
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"hw",
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"Analog Mono",
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@ -602,7 +598,6 @@ snd_pcm_t *pa_alsa_open_by_device_id(
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int i;
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int direction = 1;
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int err;
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char *d;
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snd_pcm_t *pcm_handle;
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@ -745,11 +740,8 @@ snd_pcm_t *pa_alsa_open_by_device_string(
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pa_bool_t reformat = FALSE;
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pa_assert(device);
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pa_assert(dev);
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pa_assert(ss);
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pa_assert(map);
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pa_assert(nfrags);
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pa_assert(period_size);
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d = pa_xstrdup(device);
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@ -767,7 +759,7 @@ snd_pcm_t *pa_alsa_open_by_device_string(
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SND_PCM_NO_AUTO_RESAMPLE|
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SND_PCM_NO_AUTO_CHANNELS|
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(reformat ? 0 : SND_PCM_NO_AUTO_FORMAT))) < 0) {
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pa_log("Error opening PCM device %s: %s", d, snd_strerror(err));
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pa_log_info("Error opening PCM device %s: %s", d, snd_strerror(err));
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pa_xfree(d);
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return NULL;
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}
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@ -796,13 +788,14 @@ snd_pcm_t *pa_alsa_open_by_device_string(
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continue;
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}
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pa_log("Failed to set hardware parameters on %s: %s", d, snd_strerror(err));
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pa_log_info("Failed to set hardware parameters on %s: %s", d, snd_strerror(err));
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pa_xfree(d);
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snd_pcm_close(pcm_handle);
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return NULL;
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}
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*dev = d;
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if (dev)
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*dev = d;
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if (ss->channels != map->channels)
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pa_channel_map_init_extend(map, ss->channels, PA_CHANNEL_MAP_ALSA);
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@ -811,6 +804,93 @@ snd_pcm_t *pa_alsa_open_by_device_string(
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}
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}
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int pa_alsa_probe_profiles(
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const char *dev_id,
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const pa_sample_spec *ss,
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void (*cb)(const pa_alsa_profile_info *sink, const pa_alsa_profile_info *source, void *userdata),
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void *userdata) {
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const pa_alsa_profile_info *i;
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pa_assert(dev_id);
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pa_assert(ss);
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pa_assert(cb);
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/* We try each combination of playback/capture. We also try to
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* open only for capture resp. only for sink. Don't get confused
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* by the trailing entry in device_table we use for this! */
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for (i = device_table; i < device_table + PA_ELEMENTSOF(device_table); i++) {
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const pa_alsa_profile_info *j;
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snd_pcm_t *pcm_i = NULL;
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if (i->alsa_name) {
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char *id;
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pa_sample_spec try_ss;
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pa_channel_map try_map;
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pa_log_debug("Checking for playback on %s (%s)", i->name, i->alsa_name);
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id = pa_sprintf_malloc("%s:%s", i->alsa_name, dev_id);
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try_ss = *ss;
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try_ss.channels = i->map.channels;
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try_map = i->map;
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pcm_i = pa_alsa_open_by_device_string(
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id, NULL,
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&try_ss, &try_map,
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SND_PCM_STREAM_PLAYBACK,
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NULL, NULL, 0, NULL, NULL,
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TRUE);
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pa_xfree(id);
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if (!pcm_i)
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continue;
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}
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for (j = device_table; j < device_table + PA_ELEMENTSOF(device_table); j++) {
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snd_pcm_t *pcm_j = NULL;
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if (j->alsa_name) {
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char *jd;
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pa_sample_spec try_ss;
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pa_channel_map try_map;
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pa_log_debug("Checking for capture on %s (%s)", j->name, j->alsa_name);
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jd = pa_sprintf_malloc("%s:%s", j->alsa_name, dev_id);
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try_ss = *ss;
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try_ss.channels = j->map.channels;
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try_map = j->map;
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pcm_j = pa_alsa_open_by_device_string(
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jd, NULL,
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&try_ss, &try_map,
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SND_PCM_STREAM_CAPTURE,
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NULL, NULL, 0, NULL, NULL,
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TRUE);
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pa_xfree(jd);
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if (!pcm_j)
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continue;
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}
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if (pcm_j)
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snd_pcm_close(pcm_j);
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cb(i->alsa_name ? i : NULL,
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j->alsa_name ? j : NULL, userdata);
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}
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if (pcm_i)
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snd_pcm_close(pcm_i);
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}
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return TRUE;
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}
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int pa_alsa_prepare_mixer(snd_mixer_t *mixer, const char *dev) {
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int err;
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