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-rw-r--r--src/modules/alsa-util.c115
1 files changed, 45 insertions, 70 deletions
diff --git a/src/modules/alsa-util.c b/src/modules/alsa-util.c
index 8abf834d..e8c7e146 100644
--- a/src/modules/alsa-util.c
+++ b/src/modules/alsa-util.c
@@ -39,7 +39,7 @@
#include "alsa-util.h"
struct pa_alsa_fdlist {
- int num_fds;
+ unsigned num_fds;
struct pollfd *fds;
/* This is a temporary buffer used to avoid lots of mallocs */
struct pollfd *work_fds;
@@ -50,16 +50,17 @@ struct pa_alsa_fdlist {
pa_defer_event *defer;
pa_io_event **ios;
- int polled;
+ pa_bool_t polled;
void (*cb)(void *userdata);
void *userdata;
};
-static void io_cb(pa_mainloop_api*a, pa_io_event* e, PA_GCC_UNUSED int fd, pa_io_event_flags_t events, void *userdata) {
+static void io_cb(pa_mainloop_api*a, pa_io_event* e, int fd, pa_io_event_flags_t events, void *userdata) {
struct pa_alsa_fdlist *fdl = userdata;
- int err, i;
+ int err;
+ unsigned i;
unsigned short revents;
pa_assert(a);
@@ -71,11 +72,11 @@ static void io_cb(pa_mainloop_api*a, pa_io_event* e, PA_GCC_UNUSED int fd, pa_io
if (fdl->polled)
return;
- fdl->polled = 1;
+ fdl->polled = TRUE;
memcpy(fdl->work_fds, fdl->fds, sizeof(struct pollfd) * fdl->num_fds);
- for (i = 0;i < fdl->num_fds; i++) {
+ for (i = 0; i < fdl->num_fds; i++) {
if (e == fdl->ios[i]) {
if (events & PA_IO_EVENT_INPUT)
fdl->work_fds[i].revents |= POLLIN;
@@ -102,9 +103,10 @@ static void io_cb(pa_mainloop_api*a, pa_io_event* e, PA_GCC_UNUSED int fd, pa_io
snd_mixer_handle_events(fdl->mixer);
}
-static void defer_cb(pa_mainloop_api*a, PA_GCC_UNUSED pa_defer_event* e, void *userdata) {
+static void defer_cb(pa_mainloop_api*a, pa_defer_event* e, void *userdata) {
struct pa_alsa_fdlist *fdl = userdata;
- int num_fds, i, err;
+ unsigned num_fds, i;
+ int err;
struct pollfd *temp;
pa_assert(a);
@@ -113,8 +115,7 @@ static void defer_cb(pa_mainloop_api*a, PA_GCC_UNUSED pa_defer_event* e, void *u
a->defer_enable(fdl->defer, 0);
- num_fds = snd_mixer_poll_descriptors_count(fdl->mixer);
- pa_assert(num_fds > 0);
+ num_fds = (unsigned) snd_mixer_poll_descriptors_count(fdl->mixer);
if (num_fds != fdl->num_fds) {
if (fdl->fds)
@@ -132,7 +133,7 @@ static void defer_cb(pa_mainloop_api*a, PA_GCC_UNUSED pa_defer_event* e, void *u
return;
}
- fdl->polled = 0;
+ fdl->polled = FALSE;
if (memcmp(fdl->fds, fdl->work_fds, sizeof(struct pollfd) * num_fds) == 0)
return;
@@ -176,7 +177,7 @@ struct pa_alsa_fdlist *pa_alsa_fdlist_new(void) {
fdl->m = NULL;
fdl->defer = NULL;
fdl->ios = NULL;
- fdl->polled = 0;
+ fdl->polled = FALSE;
return fdl;
}
@@ -190,9 +191,9 @@ void pa_alsa_fdlist_free(struct pa_alsa_fdlist *fdl) {
}
if (fdl->ios) {
- int i;
+ unsigned i;
pa_assert(fdl->m);
- for (i = 0;i < fdl->num_fds;i++)
+ for (i = 0; i < fdl->num_fds; i++)
fdl->m->io_free(fdl->ios[i]);
pa_xfree(fdl->ios);
}
@@ -403,7 +404,7 @@ int pa_alsa_set_hw_params(
/* If the sample rate deviates too much, we need to resample */
if (r < ss->rate*.95 || r > ss->rate*1.05)
ss->rate = r;
- ss->channels = c;
+ ss->channels = (uint8_t) c;
ss->format = f;
pa_assert(_periods > 0);
@@ -808,7 +809,7 @@ int pa_alsa_calc_mixer_map(snd_mixer_elem_t *elem, const pa_channel_map *channel
if (channel_map->channels > 1 &&
((playback && snd_mixer_selem_has_playback_volume_joined(elem)) ||
(!playback && snd_mixer_selem_has_capture_volume_joined(elem)))) {
- pa_log_info("ALSA device lacks independant volume controls for each channel, falling back to software volume control.");
+ pa_log_info("ALSA device lacks independant volume controls for each channel.");
return -1;
}
@@ -820,7 +821,7 @@ int pa_alsa_calc_mixer_map(snd_mixer_elem_t *elem, const pa_channel_map *channel
id = alsa_channel_ids[channel_map->map[i]];
if (!is_mono && id == SND_MIXER_SCHN_UNKNOWN) {
- pa_log_info("Configured channel map contains channel '%s' that is unknown to the ALSA mixer. Falling back to software volume control.", pa_channel_position_to_string(channel_map->map[i]));
+ pa_log_info("Configured channel map contains channel '%s' that is unknown to the ALSA mixer.", pa_channel_position_to_string(channel_map->map[i]));
return -1;
}
@@ -832,7 +833,7 @@ int pa_alsa_calc_mixer_map(snd_mixer_elem_t *elem, const pa_channel_map *channel
if ((playback && (!snd_mixer_selem_has_playback_channel(elem, id) || (is_mono && !snd_mixer_selem_is_playback_mono(elem)))) ||
(!playback && (!snd_mixer_selem_has_capture_channel(elem, id) || (is_mono && !snd_mixer_selem_is_capture_mono(elem))))) {
- pa_log_info("ALSA device lacks separate volumes control for channel '%s', falling back to software volume control.", pa_channel_position_to_string(channel_map->map[i]));
+ pa_log_info("ALSA device lacks separate volumes control for channel '%s'", pa_channel_position_to_string(channel_map->map[i]));
return -1;
}
@@ -850,56 +851,6 @@ int pa_alsa_calc_mixer_map(snd_mixer_elem_t *elem, const pa_channel_map *channel
return 0;
}
-void pa_alsa_0dB_playback(snd_mixer_elem_t *elem) {
- long min, max, v;
-
- pa_assert(elem);
-
- /* Try to enable 0 dB if possible. If ALSA cannot do dB, then use
- * raw volume levels and fix them to 75% */
-
- if (snd_mixer_selem_set_playback_dB_all(elem, 0, -1) >= 0)
- return;
-
- if (snd_mixer_selem_set_playback_dB_all(elem, 0, 1) >= 0)
- return;
-
- if (snd_mixer_selem_get_playback_volume_range(elem, &min, &max) < 0)
- return;
-
- v = min + ((max - min) * 3) / 4; /* 75% */
-
- if (v <= min)
- v = max;
-
- snd_mixer_selem_set_playback_volume_all(elem, v);
-}
-
-void pa_alsa_0dB_capture(snd_mixer_elem_t *elem) {
- long min, max, v;
-
- pa_assert(elem);
-
- /* Try to enable 0 dB if possible. If ALSA cannot do dB, then use
- * raw volume levels and fix them to 75% */
-
- if (snd_mixer_selem_set_capture_dB_all(elem, 0, -1) >= 0)
- return;
-
- if (snd_mixer_selem_set_capture_dB_all(elem, 0, 1) >= 0)
- return;
-
- if (snd_mixer_selem_get_capture_volume_range(elem, &min, &max) < 0)
- return;
-
- v = min + ((max - min) * 3) / 4; /* 75% */
-
- if (v <= min)
- v = max;
-
- snd_mixer_selem_set_capture_volume_all(elem, v);
-}
-
void pa_alsa_dump(snd_pcm_t *pcm) {
int err;
snd_output_t *out;
@@ -1106,10 +1057,10 @@ pa_rtpoll_item* pa_alsa_build_pollfd(snd_pcm_t *pcm, pa_rtpoll *rtpoll) {
return NULL;
}
- item = pa_rtpoll_item_new(rtpoll, PA_RTPOLL_NEVER, n);
+ item = pa_rtpoll_item_new(rtpoll, PA_RTPOLL_NEVER, (unsigned) n);
pollfd = pa_rtpoll_item_get_pollfd(item, NULL);
- if ((err = snd_pcm_poll_descriptors(pcm, pollfd, n)) < 0) {
+ if ((err = snd_pcm_poll_descriptors(pcm, pollfd, (unsigned) n)) < 0) {
pa_log("snd_pcm_poll_descriptors() failed: %s", snd_strerror(err));
pa_rtpoll_item_free(item);
return NULL;
@@ -1117,3 +1068,27 @@ pa_rtpoll_item* pa_alsa_build_pollfd(snd_pcm_t *pcm, pa_rtpoll *rtpoll) {
return item;
}
+
+pa_cvolume *pa_alsa_volume_divide(pa_cvolume *r, const pa_cvolume *t) {
+ unsigned i;
+
+ pa_assert(r);
+ pa_assert(t);
+ pa_assert(r->channels == t->channels);
+
+ for (i = 0; i < r->channels; i++) {
+ double a, b, c;
+
+ a = pa_sw_volume_to_linear(r->values[i]); /* the hw volume */
+ b = pa_sw_volume_to_linear(t->values[i]); /* the intended volume */
+
+ if (a <= 0)
+ c = 0;
+ else
+ c = b / a;
+
+ r->values[i] = pa_sw_volume_from_linear(c);
+ }
+
+ return r;
+}
generated by cgit (git 2.34.1) at 2024-04-28 19:59:49 +0000