From e52c5ea68a9c3bf6e7c4b30cb6c2d4706f214cd3 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Tue, 27 Jan 2009 00:46:39 +0100 Subject: implement new API functions pa_channel_map_can_balance(), pa_channel_map_to_name() and pa_channel_map_to_pretty_name() --- src/pulse/channelmap.c | 187 ++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 184 insertions(+), 3 deletions(-) (limited to 'src/pulse/channelmap.c') diff --git a/src/pulse/channelmap.c b/src/pulse/channelmap.c index 26eae599..455bda1b 100644 --- a/src/pulse/channelmap.c +++ b/src/pulse/channelmap.c @@ -32,6 +32,7 @@ #include #include #include +#include #include "channelmap.h" @@ -497,11 +498,58 @@ pa_channel_map *pa_channel_map_parse(pa_channel_map *rmap, const char *s) { pa_channel_map_init(&map); + /* We don't need to match against the well known channel mapping + * "mono" here explicitly, because that can be understood as + * listing with one channel called "mono". */ + if (strcmp(s, "stereo") == 0) { map.channels = 2; map.map[0] = PA_CHANNEL_POSITION_LEFT; map.map[1] = PA_CHANNEL_POSITION_RIGHT; goto finish; + } else if (strcmp(s, "surround-40") == 0) { + map.channels = 4; + map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT; + map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT; + map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT; + map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT; + goto finish; + } else if (strcmp(s, "surround-41") == 0) { + map.channels = 5; + map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT; + map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT; + map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT; + map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT; + map.map[4] = PA_CHANNEL_POSITION_LFE; + goto finish; + } else if (strcmp(s, "surround-50") == 0) { + map.channels = 5; + map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT; + map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT; + map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT; + map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT; + map.map[4] = PA_CHANNEL_POSITION_FRONT_CENTER; + goto finish; + } else if (strcmp(s, "surround-51") == 0) { + map.channels = 6; + map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT; + map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT; + map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT; + map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT; + map.map[4] = PA_CHANNEL_POSITION_FRONT_CENTER; + map.map[5] = PA_CHANNEL_POSITION_LFE; + goto finish; + } else if (strcmp(s, "surround-71") == 0) { + map.channels = 8; + map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT; + map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT; + map.map[2] = PA_CHANNEL_POSITION_REAR_LEFT; + map.map[3] = PA_CHANNEL_POSITION_REAR_RIGHT; + map.map[4] = PA_CHANNEL_POSITION_FRONT_CENTER; + map.map[5] = PA_CHANNEL_POSITION_LFE; + map.map[6] = PA_CHANNEL_POSITION_SIDE_LEFT; + map.map[7] = PA_CHANNEL_POSITION_SIDE_RIGHT; + goto finish; } state = NULL; @@ -579,7 +627,7 @@ 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_bool_t in_a[PA_CHANNEL_POSITION_MAX]; + pa_bitset_t in_a[PA_BITSET_ELEMENTS(PA_CHANNEL_POSITION_MAX)]; unsigned i; pa_assert(a); @@ -588,11 +636,144 @@ int pa_channel_map_superset(const pa_channel_map *a, const pa_channel_map *b) { memset(in_a, 0, sizeof(in_a)); for (i = 0; i < a->channels; i++) - in_a[a->map[i]] = TRUE; + pa_bitset_set(in_a, a->map[i], TRUE); for (i = 0; i < b->channels; i++) - if (!in_a[b->map[i]]) + if (!pa_bitset_get(in_a, b->map[i])) return 0; return 1; } + +int pa_channel_map_can_balance(const pa_channel_map *map) { + unsigned c; + + pa_assert(map); + + for (c = 0; c < map->channels; c++) + + switch (map->map[c]) { + case PA_CHANNEL_POSITION_LEFT: + case PA_CHANNEL_POSITION_RIGHT: + case PA_CHANNEL_POSITION_REAR_LEFT: + case PA_CHANNEL_POSITION_REAR_RIGHT: + case PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER: + case PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER: + case PA_CHANNEL_POSITION_SIDE_LEFT: + case PA_CHANNEL_POSITION_SIDE_RIGHT: + case PA_CHANNEL_POSITION_TOP_FRONT_LEFT: + case PA_CHANNEL_POSITION_TOP_FRONT_RIGHT: + case PA_CHANNEL_POSITION_TOP_REAR_LEFT: + case PA_CHANNEL_POSITION_TOP_REAR_RIGHT: + return 1; + + default: + ; + } + + return 0; +} + +const char* pa_channel_map_to_name(const pa_channel_map *map) { + pa_bitset_t in_map[PA_BITSET_ELEMENTS(PA_CHANNEL_POSITION_MAX)]; + unsigned c; + + pa_assert(map); + + memset(in_map, 0, sizeof(in_map)); + + for (c = 0; c < map->channels; c++) + pa_bitset_set(in_map, map->map[c], TRUE); + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_MONO, -1)) + return "mono"; + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, -1)) + return "stereo"; + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT, + PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, -1)) + return "surround-40"; + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT, + PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, + PA_CHANNEL_POSITION_LFE, -1)) + return "surround-41"; + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT, + PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, + PA_CHANNEL_POSITION_FRONT_CENTER, -1)) + return "surround-50"; + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT, + PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, + PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE, -1)) + return "surround-51"; + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT, + PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, + PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE, + PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT, -1)) + return "surround-71"; + + return NULL; +} + +const char* pa_channel_map_to_pretty_name(const pa_channel_map *map) { + pa_bitset_t in_map[PA_BITSET_ELEMENTS(PA_CHANNEL_POSITION_MAX)]; + unsigned c; + + pa_assert(map); + + memset(in_map, 0, sizeof(in_map)); + + for (c = 0; c < map->channels; c++) + pa_bitset_set(in_map, map->map[c], TRUE); + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_MONO, -1)) + return _("Mono"); + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_LEFT, PA_CHANNEL_POSITION_RIGHT, -1)) + return _("Stereo"); + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT, + PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, -1)) + return _("Surround 4.0"); + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT, + PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, + PA_CHANNEL_POSITION_LFE, -1)) + return _("Surround 4.1"); + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT, + PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, + PA_CHANNEL_POSITION_FRONT_CENTER, -1)) + return _("Surround 5.0"); + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT, + PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, + PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE, -1)) + return _("Surround 5.1"); + + if (pa_bitset_equals(in_map, PA_CHANNEL_POSITION_MAX, + PA_CHANNEL_POSITION_FRONT_LEFT, PA_CHANNEL_POSITION_FRONT_RIGHT, + PA_CHANNEL_POSITION_REAR_LEFT, PA_CHANNEL_POSITION_REAR_RIGHT, + PA_CHANNEL_POSITION_FRONT_CENTER, PA_CHANNEL_POSITION_LFE, + PA_CHANNEL_POSITION_SIDE_LEFT, PA_CHANNEL_POSITION_SIDE_RIGHT, -1)) + return _("Surround 7.1"); + + return NULL; +} -- cgit