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volume,channelmap: reimplement a couple of calls based on channel masks

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This commit is contained in:
Lennart Poettering 2009-06-17 03:09:28 +02:00
parent 77901e5e62
commit 083b17b28a
2 changed files with 24 additions and 121 deletions
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93
src/pulse/channelmap.c
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@ -30,9 +30,11 @@
#include <pulse/xmalloc.h>
#include <pulse/i18n.h>
#include <pulsecore/core-util.h>
#include <pulsecore/macro.h>
#include <pulsecore/bitset.h>
#include <pulsecore/sample-util.h>
#include "channelmap.h"
@ -631,8 +633,7 @@ int pa_channel_map_compatible(const pa_channel_map *map, const pa_sample_spec *s
}
int pa_channel_map_superset(const pa_channel_map *a, const pa_channel_map *b) {
pa_bitset_t in_a[PA_BITSET_ELEMENTS(PA_CHANNEL_POSITION_MAX)];
unsigned i;
pa_channel_position_mask_t am, bm;
pa_assert(a);
pa_assert(b);
@ -640,98 +641,36 @@ int pa_channel_map_superset(const pa_channel_map *a, const pa_channel_map *b) {
pa_return_val_if_fail(pa_channel_map_valid(a), 0);
pa_return_val_if_fail(pa_channel_map_valid(b), 0);
memset(in_a, 0, sizeof(in_a));
am = pa_channel_map_mask(a);
bm = pa_channel_map_mask(b);
for (i = 0; i < a->channels; i++)
pa_bitset_set(in_a, a->map[i], TRUE);
for (i = 0; i < b->channels; i++)
if (!pa_bitset_get(in_a, b->map[i]))
return 0;
return 1;
return (bm & am) == bm;
}
int pa_channel_map_can_balance(const pa_channel_map *map) {
unsigned c;
pa_bool_t left = FALSE, right = FALSE;
pa_channel_position_mask_t m;
pa_assert(map);
pa_return_val_if_fail(pa_channel_map_valid(map), 0);
for (c = 0; c < map->channels; c++) {
m = pa_channel_map_mask(map);
switch (map->map[c]) {
case PA_CHANNEL_POSITION_LEFT:
case PA_CHANNEL_POSITION_REAR_LEFT:
case PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER:
case PA_CHANNEL_POSITION_SIDE_LEFT:
case PA_CHANNEL_POSITION_TOP_FRONT_LEFT:
case PA_CHANNEL_POSITION_TOP_REAR_LEFT:
left = TRUE;
break;
case PA_CHANNEL_POSITION_RIGHT:
case PA_CHANNEL_POSITION_REAR_RIGHT:
case PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER:
case PA_CHANNEL_POSITION_SIDE_RIGHT:
case PA_CHANNEL_POSITION_TOP_FRONT_RIGHT:
case PA_CHANNEL_POSITION_TOP_REAR_RIGHT:
right = TRUE;
break;
default:
;
}
if (left && right)
return 1;
}
return 0;
return
(PA_CHANNEL_POSITION_MASK_LEFT & m) &&
(PA_CHANNEL_POSITION_MASK_RIGHT & m);
}
int pa_channel_map_can_fade(const pa_channel_map *map) {
unsigned c;
pa_bool_t front = FALSE, rear = FALSE;
pa_channel_position_mask_t m;
pa_assert(map);
pa_return_val_if_fail(pa_channel_map_valid(map), 0);
for (c = 0; c < map->channels; c++) {
m = pa_channel_map_mask(map);
switch (map->map[c]) {
case PA_CHANNEL_POSITION_FRONT_LEFT:
case PA_CHANNEL_POSITION_FRONT_RIGHT:
case PA_CHANNEL_POSITION_FRONT_CENTER:
case PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER:
case PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER:
case PA_CHANNEL_POSITION_TOP_FRONT_LEFT:
case PA_CHANNEL_POSITION_TOP_FRONT_RIGHT:
case PA_CHANNEL_POSITION_TOP_FRONT_CENTER:
front = TRUE;
break;
case PA_CHANNEL_POSITION_REAR_LEFT:
case PA_CHANNEL_POSITION_REAR_RIGHT:
case PA_CHANNEL_POSITION_REAR_CENTER:
case PA_CHANNEL_POSITION_TOP_REAR_LEFT:
case PA_CHANNEL_POSITION_TOP_REAR_RIGHT:
case PA_CHANNEL_POSITION_TOP_REAR_CENTER:
rear = TRUE;
break;
default:
;
}
if (front && rear)
return 1;
}
return 0;
return
(PA_CHANNEL_POSITION_MASK_FRONT & m) &&
(PA_CHANNEL_POSITION_MASK_REAR & m);
}
const char* pa_channel_map_to_name(const pa_channel_map *map) {