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https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-03 09:01:50 -05:00
implement new API functions pa_channel_map_can_balance(), pa_channel_map_to_name() and pa_channel_map_to_pretty_name()
This commit is contained in:
Lennart Poettering
parent
24b3a743bd
commit
e52c5ea68a
3 changed files with 207 additions and 4 deletions
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@ -32,6 +32,7 @@
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#include <pulse/i18n.h>
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#include <pulsecore/core-util.h>
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#include <pulsecore/macro.h>
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#include <pulsecore/bitset.h>
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#include "channelmap.h"
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@ -497,11 +498,58 @@ pa_channel_map *pa_channel_map_parse(pa_channel_map *rmap, const char *s) {
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pa_channel_map_init(&map);
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/* We don't need to match against the well known channel mapping
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* "mono" here explicitly, because that can be understood as
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* listing with one channel called "mono". */
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if (strcmp(s, "stereo") == 0) {
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map.channels = 2;
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map.map[0] = PA_CHANNEL_POSITION_LEFT;
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map.map[1] = PA_CHANNEL_POSITION_RIGHT;
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goto finish;
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} else if (strcmp(s, "surround-40") == 0) {
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map.channels = 4;
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map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
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map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
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map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT;
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map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT;
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goto finish;
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} else if (strcmp(s, "surround-41") == 0) {
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map.channels = 5;
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map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
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map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
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map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT;
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map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT;
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map.map[4] = PA_CHANNEL_POSITION_LFE;
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goto finish;
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} else if (strcmp(s, "surround-50") == 0) {
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map.channels = 5;
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map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
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map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
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map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT;
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map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT;
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map.map[4] = PA_CHANNEL_POSITION_FRONT_CENTER;
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goto finish;
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} else if (strcmp(s, "surround-51") == 0) {
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map.channels = 6;
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map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
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map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
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map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT;
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map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT;
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map.map[4] = PA_CHANNEL_POSITION_FRONT_CENTER;
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map.map[5] = PA_CHANNEL_POSITION_LFE;
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goto finish;
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} else if (strcmp(s, "surround-71") == 0) {
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map.channels = 8;
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map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT;
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map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT;
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map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT;
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map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT;
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map.map[4] = PA_CHANNEL_POSITION_FRONT_CENTER;
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map.map[5] = PA_CHANNEL_POSITION_LFE;
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map.map[6] = PA_CHANNEL_POSITION_SIDE_LEFT;
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map.map[7] = PA_CHANNEL_POSITION_SIDE_RIGHT;
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goto finish;
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}
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state = NULL;
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@ -579,7 +627,7 @@ int pa_channel_map_compatible(const pa_channel_map *map, const pa_sample_spec *s
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}
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int pa_channel_map_superset(const pa_channel_map *a, const pa_channel_map *b) {
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pa_bool_t in_a[PA_CHANNEL_POSITION_MAX];
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pa_bitset_t in_a[PA_BITSET_ELEMENTS(PA_CHANNEL_POSITION_MAX)];
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unsigned i;
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pa_assert(a);
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@ -588,11 +636,144 @@ int pa_channel_map_superset(const pa_channel_map *a, const pa_channel_map *b) {
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memset(in_a, 0, sizeof(in_a));
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for (i = 0; i < a->channels; i++)
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in_a[a->map[i]] = TRUE;
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pa_bitset_set(in_a, a->map[i], TRUE);
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for (i = 0; i < b->channels; i++)
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if (!in_a[b->map[i]])
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if (!pa_bitset_get(in_a, b->map[i]))
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return 0;
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return 1;
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}
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int pa_channel_map_can_balance(const pa_channel_map *map) {
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unsigned c;
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pa_assert(map);
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for (c = 0; c < map->channels; c++)
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switch (map->map[c]) {
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case PA_CHANNEL_POSITION_LEFT:
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case PA_CHANNEL_POSITION_RIGHT:
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case PA_CHANNEL_POSITION_REAR_LEFT:
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case PA_CHANNEL_POSITION_REAR_RIGHT:
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case PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER:
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case PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER:
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case PA_CHANNEL_POSITION_SIDE_LEFT:
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case PA_CHANNEL_POSITION_SIDE_RIGHT:
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case PA_CHANNEL_POSITION_TOP_FRONT_LEFT:
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case PA_CHANNEL_POSITION_TOP_FRONT_RIGHT:
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case PA_CHANNEL_POSITION_TOP_REAR_LEFT:
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case PA_CHANNEL_POSITION_TOP_REAR_RIGHT:
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return 1;
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default:
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;
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}
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return 0;
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}
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const char* pa_channel_map_to_name(const pa_channel_map *map) {
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pa_bitset_t in_map[PA_BITSET_ELEMENTS(PA_CHANNEL_POSITION_MAX)];
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unsigned c;
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pa_assert(map);
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memset(in_map, 0, sizeof(in_map));
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for (c = 0; c < map->channels; c++)
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pa_bitset_set(in_map, map->map[c], TRUE);
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_MONO, -1))
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return "mono";
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, -1))
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return "stereo";
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
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PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, -1))
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return "surround-40";
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
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PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
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PA_CHANNEL_POSITION_LFE, -1))
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return "surround-41";
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
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PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
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PA_CHANNEL_POSITION_FRONT_CENTER, -1))
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return "surround-50";
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
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PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
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PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE, -1))
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return "surround-51";
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
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PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
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PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE,
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PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT, -1))
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return "surround-71";
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return NULL;
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}
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const char* pa_channel_map_to_pretty_name(const pa_channel_map *map) {
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pa_bitset_t in_map[PA_BITSET_ELEMENTS(PA_CHANNEL_POSITION_MAX)];
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unsigned c;
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pa_assert(map);
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memset(in_map, 0, sizeof(in_map));
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for (c = 0; c < map->channels; c++)
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pa_bitset_set(in_map, map->map[c], TRUE);
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_MONO, -1))
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return _("Mono");
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, -1))
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return _("Stereo");
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
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PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, -1))
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return _("Surround 4.0");
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
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PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
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PA_CHANNEL_POSITION_LFE, -1))
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return _("Surround 4.1");
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
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PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
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PA_CHANNEL_POSITION_FRONT_CENTER, -1))
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return _("Surround 5.0");
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
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PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
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PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE, -1))
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return _("Surround 5.1");
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if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX,
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PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT,
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PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT,
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PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE,
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PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT, -1))
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return _("Surround 7.1");
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return NULL;
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}
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