summaryrefslogtreecommitdiffstats
path: root/src/modules/alsa/alsa-util.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/modules/alsa/alsa-util.c')
-rw-r--r--src/modules/alsa/alsa-util.c78
1 files changed, 26 insertions, 52 deletions
diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c
index 04d23e0e..5fabf644 100644
--- a/src/modules/alsa/alsa-util.c
+++ b/src/modules/alsa/alsa-util.c
@@ -622,72 +622,45 @@ snd_pcm_t *pa_alsa_open_by_device_id(
i = 0;
for (;;) {
- pa_sample_spec try_ss;
- pa_bool_t reformat;
if ((direction > 0) == channel_map_superset(&device_table[i].map, map)) {
+ pa_sample_spec try_ss;
+
pa_log_debug("Checking for %s (%s)", device_table[i].name, device_table[i].alsa_name);
d = pa_sprintf_malloc("%s:%s", device_table[i].alsa_name, dev_id);
- reformat = FALSE;
- for (;;) {
- pa_log_debug("Trying %s %s SND_PCM_NO_AUTO_FORMAT ...", d, reformat ? "without" : "with");
-
- /* We don't pass SND_PCM_NONBLOCK here, since alsa-lib <=
- * 1.0.17a would then ignore the SND_PCM_NO_xxx
- * flags. Instead we enable nonblock mode afterwards via
- * snd_pcm_nonblock(). Also see
- * http://mailman.alsa-project.org/pipermail/alsa-devel/2008-August/010258.html */
-
- if ((err = snd_pcm_open(&pcm_handle, d, mode,
- /* SND_PCM_NONBLOCK| */
- SND_PCM_NO_AUTO_RESAMPLE|
- SND_PCM_NO_AUTO_CHANNELS|
- (reformat ? 0 : SND_PCM_NO_AUTO_FORMAT))) < 0) {
- pa_log_info("Couldn't open PCM device %s: %s", d, snd_strerror(err));
- break;
- }
-
- try_ss.channels = device_table[i].map.channels;
- try_ss.rate = ss->rate;
- try_ss.format = ss->format;
-
- if ((err = pa_alsa_set_hw_params(pcm_handle, &try_ss, nfrags, period_size, tsched_size, use_mmap, use_tsched, TRUE)) < 0) {
-
- if (!reformat) {
- reformat = TRUE;
- snd_pcm_close(pcm_handle);
- continue;
- }
-
- if (!pa_startswith(d, "plug:") && !pa_startswith(d, "plughw:")) {
- char *t;
-
- t = pa_sprintf_malloc("plug:%s", d);
- pa_xfree(d);
- d = t;
+ try_ss.channels = device_table[i].map.channels;
+ try_ss.rate = ss->rate;
+ try_ss.format = ss->format;
+
+ pcm_handle = pa_alsa_open_by_device_string(
+ d,
+ dev,
+ &try_ss,
+ map,
+ mode,
+ nfrags,
+ period_size,
+ tsched_size,
+ use_mmap,
+ use_tsched,
+ TRUE);
- reformat = FALSE;
-
- snd_pcm_close(pcm_handle);
- continue;
- }
+ pa_xfree(d);
- pa_log_info("PCM device %s refused our hw parameters: %s", d, snd_strerror(err));
- snd_pcm_close(pcm_handle);
- break;
- }
+ if (pcm_handle) {
*ss = try_ss;
*map = device_table[i].map;
pa_assert(map->channels == ss->channels);
- *dev = d;
+
if (config_description)
*config_description = device_table[i].description;
if (config_name)
*config_name = device_table[i].name;
+
return pcm_handle;
}
@@ -742,7 +715,7 @@ snd_pcm_t *pa_alsa_open_by_device_id(
d = pa_sprintf_malloc("hw:%s", dev_id);
pa_log_debug("Trying %s as last resort...", d);
- pcm_handle = pa_alsa_open_by_device_string(d, dev, ss, map, mode, nfrags, period_size, tsched_size, use_mmap, use_tsched);
+ pcm_handle = pa_alsa_open_by_device_string(d, dev, ss, map, mode, nfrags, period_size, tsched_size, use_mmap, use_tsched, FALSE);
pa_xfree(d);
if (pcm_handle) {
@@ -763,7 +736,8 @@ snd_pcm_t *pa_alsa_open_by_device_string(
snd_pcm_uframes_t *period_size,
snd_pcm_uframes_t tsched_size,
pa_bool_t *use_mmap,
- pa_bool_t *use_tsched) {
+ pa_bool_t *use_tsched,
+ pa_bool_t require_exact_channel_number) {
int err;
char *d;
@@ -798,7 +772,7 @@ snd_pcm_t *pa_alsa_open_by_device_string(
return NULL;
}
- if ((err = pa_alsa_set_hw_params(pcm_handle, ss, nfrags, period_size, tsched_size, use_mmap, use_tsched, FALSE)) < 0) {
+ if ((err = pa_alsa_set_hw_params(pcm_handle, ss, nfrags, period_size, tsched_size, use_mmap, use_tsched, require_exact_channel_number)) < 0) {
if (!reformat) {
reformat = TRUE;