/*** This file is part of PulseAudio. Copyright 2005-2006 Lennart Poettering Copyright 2006 Pierre Ossman for Cendio AB PulseAudio is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. PulseAudio is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with PulseAudio; if not, see . ***/ #ifdef HAVE_CONFIG_H #include #endif #include #include #include #include #include #include #include #include #include #include "channelmap.h" const char *const table[PA_CHANNEL_POSITION_MAX] = { [PA_CHANNEL_POSITION_MONO] = "mono", [PA_CHANNEL_POSITION_FRONT_CENTER] = "front-center", [PA_CHANNEL_POSITION_FRONT_LEFT] = "front-left", [PA_CHANNEL_POSITION_FRONT_RIGHT] = "front-right", [PA_CHANNEL_POSITION_REAR_CENTER] = "rear-center", [PA_CHANNEL_POSITION_REAR_LEFT] = "rear-left", [PA_CHANNEL_POSITION_REAR_RIGHT] = "rear-right", [PA_CHANNEL_POSITION_LFE] = "lfe", [PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER] = "front-left-of-center", [PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER] = "front-right-of-center", [PA_CHANNEL_POSITION_SIDE_LEFT] = "side-left", [PA_CHANNEL_POSITION_SIDE_RIGHT] = "side-right", [PA_CHANNEL_POSITION_AUX0] = "aux0", [PA_CHANNEL_POSITION_AUX1] = "aux1", [PA_CHANNEL_POSITION_AUX2] = "aux2", [PA_CHANNEL_POSITION_AUX3] = "aux3", [PA_CHANNEL_POSITION_AUX4] = "aux4", [PA_CHANNEL_POSITION_AUX5] = "aux5", [PA_CHANNEL_POSITION_AUX6] = "aux6", [PA_CHANNEL_POSITION_AUX7] = "aux7", [PA_CHANNEL_POSITION_AUX8] = "aux8", [PA_CHANNEL_POSITION_AUX9] = "aux9", [PA_CHANNEL_POSITION_AUX10] = "aux10", [PA_CHANNEL_POSITION_AUX11] = "aux11", [PA_CHANNEL_POSITION_AUX12] = "aux12", [PA_CHANNEL_POSITION_AUX13] = "aux13", [PA_CHANNEL_POSITION_AUX14] = "aux14", [PA_CHANNEL_POSITION_AUX15] = "aux15", [PA_CHANNEL_POSITION_AUX16] = "aux16", [PA_CHANNEL_POSITION_AUX17] = "aux17", [PA_CHANNEL_POSITION_AUX18] = "aux18", [PA_CHANNEL_POSITION_AUX19] = "aux19", [PA_CHANNEL_POSITION_AUX20] = "aux20", [PA_CHANNEL_POSITION_AUX21] = "aux21", [PA_CHANNEL_POSITION_AUX22] = "aux22", [PA_CHANNEL_POSITION_AUX23] = "aux23", [PA_CHANNEL_POSITION_AUX24] = "aux24", [PA_CHANNEL_POSITION_AUX25] = "aux25", [PA_CHANNEL_POSITION_AUX26] = "aux26", [PA_CHANNEL_POSITION_AUX27] = "aux27", [PA_CHANNEL_POSITION_AUX28] = "aux28", [PA_CHANNEL_POSITION_AUX29] = "aux29", [PA_CHANNEL_POSITION_AUX30] = "aux30", [PA_CHANNEL_POSITION_AUX31] = "aux31", [PA_CHANNEL_POSITION_TOP_CENTER] = "top-center", [PA_CHANNEL_POSITION_TOP_FRONT_CENTER] = "top-front-center", [PA_CHANNEL_POSITION_TOP_FRONT_LEFT] = "top-front-left", [PA_CHANNEL_POSITION_TOP_FRONT_RIGHT] = "top-front-right", [PA_CHANNEL_POSITION_TOP_REAR_CENTER] = "top-rear-center", [PA_CHANNEL_POSITION_TOP_REAR_LEFT] = "top-rear-left", [PA_CHANNEL_POSITION_TOP_REAR_RIGHT] = "top-rear-right" }; const char *const pretty_table[PA_CHANNEL_POSITION_MAX] = { [PA_CHANNEL_POSITION_MONO] = N_("Mono"), [PA_CHANNEL_POSITION_FRONT_CENTER] = N_("Front Center"), [PA_CHANNEL_POSITION_FRONT_LEFT] = N_("Front Left"), [PA_CHANNEL_POSITION_FRONT_RIGHT] = N_("Front Right"), [PA_CHANNEL_POSITION_REAR_CENTER] = N_("Rear Center"), [PA_CHANNEL_POSITION_REAR_LEFT] = N_("Rear Left"), [PA_CHANNEL_POSITION_REAR_RIGHT] = N_("Rear Right"), [PA_CHANNEL_POSITION_LFE] = N_("Subwoofer"), [PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER] = N_("Front Left-of-center"), [PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER] = N_("Front Right-of-center"), [PA_CHANNEL_POSITION_SIDE_LEFT] = N_("Side Left"), [PA_CHANNEL_POSITION_SIDE_RIGHT] = N_("Side Right"), [PA_CHANNEL_POSITION_AUX0] = N_("Auxiliary 0"), [PA_CHANNEL_POSITION_AUX1] = N_("Auxiliary 1"), [PA_CHANNEL_POSITION_AUX2] = N_("Auxiliary 2"), [PA_CHANNEL_POSITION_AUX3] = N_("Auxiliary 3"), [PA_CHANNEL_POSITION_AUX4] = N_("Auxiliary 4"), [PA_CHANNEL_POSITION_AUX5] = N_("Auxiliary 5"), [PA_CHANNEL_POSITION_AUX6] = N_("Auxiliary 6"), [PA_CHANNEL_POSITION_AUX7] = N_("Auxiliary 7"), [PA_CHANNEL_POSITION_AUX8] = N_("Auxiliary 8"), [PA_CHANNEL_POSITION_AUX9] = N_("Auxiliary 9"), [PA_CHANNEL_POSITION_AUX10] = N_("Auxiliary 10"), [PA_CHANNEL_POSITION_AUX11] = N_("Auxiliary 11"), [PA_CHANNEL_POSITION_AUX12] = N_("Auxiliary 12"), [PA_CHANNEL_POSITION_AUX13] = N_("Auxiliary 13"), [PA_CHANNEL_POSITION_AUX14] = N_("Auxiliary 14"), [PA_CHANNEL_POSITION_AUX15] = N_("Auxiliary 15"), [PA_CHANNEL_POSITION_AUX16] = N_("Auxiliary 16"), [PA_CHANNEL_POSITION_AUX17] = N_("Auxiliary 17"), [PA_CHANNEL_POSITION_AUX18] = N_("Auxiliary 18"), [PA_CHANNEL_POSITION_AUX19] = N_("Auxiliary 19"), [PA_CHANNEL_POSITION_AUX20] = N_("Auxiliary 20"), [PA_CHANNEL_POSITION_AUX21] = N_("Auxiliary 21"), [PA_CHANNEL_POSITION_AUX22] = N_("Auxiliary 22"), [PA_CHANNEL_POSITION_AUX23] = N_("Auxiliary 23"), [PA_CHANNEL_POSITION_AUX24] = N_("Auxiliary 24"), [PA_CHANNEL_POSITION_AUX25] = N_("Auxiliary 25"), [PA_CHANNEL_POSITION_AUX26] = N_("Auxiliary 26"), [PA_CHANNEL_POSITION_AUX27] = N_("Auxiliary 27"), [PA_CHANNEL_POSITION_AUX28] = N_("Auxiliary 28"), [PA_CHANNEL_POSITION_AUX29] = N_("Auxiliary 29"), [PA_CHANNEL_POSITION_AUX30] = N_("Auxiliary 30"), [PA_CHANNEL_POSITION_AUX31] = N_("Auxiliary 31"), [PA_CHANNEL_POSITION_TOP_CENTER] = N_("Top Center"), [PA_CHANNEL_POSITION_TOP_FRONT_CENTER] = N_("Top Front Center"), [PA_CHANNEL_POSITION_TOP_FRONT_LEFT] = N_("Top Front Left"), [PA_CHANNEL_POSITION_TOP_FRONT_RIGHT] = N_("Top Front Right"), [PA_CHANNEL_POSITION_TOP_REAR_CENTER] = N_("Top Rear Center"), [PA_CHANNEL_POSITION_TOP_REAR_LEFT] = N_("Top Rear Left"), [PA_CHANNEL_POSITION_TOP_REAR_RIGHT] = N_("Top Rear Right") }; pa_channel_map* pa_channel_map_init(pa_channel_map *m) { unsigned c; pa_assert(m); m->channels = 0; for (c = 0; c < PA_CHANNELS_MAX; c++) m->map[c] = PA_CHANNEL_POSITION_INVALID; return m; } pa_channel_map* pa_channel_map_init_mono(pa_channel_map *m) { pa_assert(m); pa_channel_map_init(m); m->channels = 1; m->map[0] = PA_CHANNEL_POSITION_MONO; return m; } pa_channel_map* pa_channel_map_init_stereo(pa_channel_map *m) { pa_assert(m); pa_channel_map_init(m); m->channels = 2; m->map[0] = PA_CHANNEL_POSITION_LEFT; m->map[1] = PA_CHANNEL_POSITION_RIGHT; return m; } pa_channel_map* pa_channel_map_init_auto(pa_channel_map *m, unsigned channels, pa_channel_map_def_t def) { pa_assert(m); pa_assert(pa_channels_valid(channels)); pa_assert(def < PA_CHANNEL_MAP_DEF_MAX); pa_channel_map_init(m); m->channels = (uint8_t) channels; switch (def) { case PA_CHANNEL_MAP_AIFF: /* This is somewhat compatible with RFC3551 */ switch (channels) { case 1: m->map[0] = PA_CHANNEL_POSITION_MONO; return m; case 6: m->map[0] = PA_CHANNEL_POSITION_FRONT_LEFT; m->map[1] = PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER; m->map[2] = PA_CHANNEL_POSITION_FRONT_CENTER; m->map[3] = PA_CHANNEL_POSITION_FRONT_RIGHT; m->map[4] = PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER; m->map[5] = PA_CHANNEL_POSITION_REAR_CENTER; return m; case 5: m->map[2] = PA_CHANNEL_POSITION_FRONT_CENTER; m->map[3] = PA_CHANNEL_POSITION_REAR_LEFT; m->map[4] = PA_CHANNEL_POSITION_REAR_RIGHT; /* Fall through */ case 2: m->map[0] = PA_CHANNEL_POSITION_FRONT_LEFT; m->map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT; return m; case 3: m->map[0] = PA_CHANNEL_POSITION_LEFT; m->map[1] = PA_CHANNEL_POSITION_RIGHT; m->map[2] = PA_CHANNEL_POSITION_CENTER; return m; case 4: m->map[0] = PA_CHANNEL_POSITION_LEFT; m->map[1] = PA_CHANNEL_POSITION_CENTER; m->map[2] = PA_CHANNEL_POSITION_RIGHT; m->map[3] = PA_CHANNEL_POSITION_REAR_CENTER; return m; default: return NULL; } case PA_CHANNEL_MAP_ALSA: switch (channels) { case 1: m->map[0] = PA_CHANNEL_POSITION_MONO; return m; case 8: m->map[6] = PA_CHANNEL_POSITION_SIDE_LEFT; m->map[7] = PA_CHANNEL_POSITION_SIDE_RIGHT; /* Fall through */ case 6: m->map[5] = PA_CHANNEL_POSITION_LFE; /* Fall through */ case 5: m->map[4] = PA_CHANNEL_POSITION_FRONT_CENTER; /* Fall through */ case 4: m->map[2] = PA_CHANNEL_POSITION_REAR_LEFT; m->map[3] = PA_CHANNEL_POSITION_REAR_RIGHT; /* Fall through */ case 2: m->map[0] = PA_CHANNEL_POSITION_FRONT_LEFT; m->map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT; return m; default: return NULL; } case PA_CHANNEL_MAP_AUX: { unsigned i; for (i = 0; i < channels; i++) m->map[i] = PA_CHANNEL_POSITION_AUX0 + i; return m; } case PA_CHANNEL_MAP_WAVEEX: /* Following http://www.microsoft.com/whdc/device/audio/multichaud.mspx#EKLAC */ switch (channels) { case 1: m->map[0] = PA_CHANNEL_POSITION_MONO; return m; case 18: m->map[15] = PA_CHANNEL_POSITION_TOP_REAR_LEFT; m->map[16] = PA_CHANNEL_POSITION_TOP_REAR_CENTER; m->map[17] = PA_CHANNEL_POSITION_TOP_REAR_RIGHT; /* Fall through */ case 15: m->map[12] = PA_CHANNEL_POSITION_TOP_FRONT_LEFT; m->map[13] = PA_CHANNEL_POSITION_TOP_FRONT_CENTER; m->map[14] = PA_CHANNEL_POSITION_TOP_FRONT_RIGHT; /* Fall through */ case 12: m->map[11] = PA_CHANNEL_POSITION_TOP_CENTER; /* Fall through */ case 11: m->map[9] = PA_CHANNEL_POSITION_SIDE_LEFT; m->map[10] = PA_CHANNEL_POSITION_SIDE_RIGHT; /* Fall through */ case 9: m->map[8] = PA_CHANNEL_POSITION_REAR_CENTER; /* Fall through */ case 8: m->map[6] = PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER; m->map[7] = PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER; /* Fall through */ case 6: m->map[4] = PA_CHANNEL_POSITION_REAR_LEFT; m->map[5] = PA_CHANNEL_POSITION_REAR_RIGHT; /* Fall through */ case 4: m->map[3] = PA_CHANNEL_POSITION_LFE; /* Fall through */ case 3: m->map[2] = PA_CHANNEL_POSITION_FRONT_CENTER; /* Fall through */ case 2: m->map[0] = PA_CHANNEL_POSITION_FRONT_LEFT; m->map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT; return m; default: return NULL; } case PA_CHANNEL_MAP_OSS: switch (channels) { case 1: m->map[0] = PA_CHANNEL_POSITION_MONO; return m; case 8: m->map[6] = PA_CHANNEL_POSITION_REAR_LEFT; m->map[7] = PA_CHANNEL_POSITION_REAR_RIGHT; /* Fall through */ case 6: m->map[4] = PA_CHANNEL_POSITION_SIDE_LEFT; m->map[5] = PA_CHANNEL_POSITION_SIDE_RIGHT; /* Fall through */ case 4: m->map[3] = PA_CHANNEL_POSITION_LFE; /* Fall through */ case 3: m->map[2] = PA_CHANNEL_POSITION_FRONT_CENTER; /* Fall through */ case 2: m->map[0] = PA_CHANNEL_POSITION_FRONT_LEFT; m->map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT; return m; default: return NULL; } default: pa_assert_not_reached(); } } pa_channel_map* pa_channel_map_init_extend(pa_channel_map *m, unsigned channels, pa_channel_map_def_t def) { unsigned c; pa_assert(m); pa_assert(pa_channels_valid(channels)); pa_assert(def < PA_CHANNEL_MAP_DEF_MAX); pa_channel_map_init(m); for (c = channels; c > 0; c--) { if (pa_channel_map_init_auto(m, c, def)) { unsigned i = 0; for (; c < channels; c++) { m->map[c] = PA_CHANNEL_POSITION_AUX0 + i; i++; } m->channels = (uint8_t) channels; return m; } } return NULL; } const char* pa_channel_position_to_string(pa_channel_position_t pos) { if (pos < 0 || pos >= PA_CHANNEL_POSITION_MAX) return NULL; return table[pos]; } const char* pa_channel_position_to_pretty_string(pa_channel_position_t pos) { if (pos < 0 || pos >= PA_CHANNEL_POSITION_MAX) return NULL; pa_init_i18n(); return _(pretty_table[pos]); } int pa_channel_map_equal(const pa_channel_map *a, const pa_channel_map *b) { unsigned c; pa_assert(a); pa_assert(b); pa_return_val_if_fail(pa_channel_map_valid(a), 0); if (PA_UNLIKELY(a == b)) return 1; pa_return_val_if_fail(pa_channel_map_valid(b), 0); if (a->channels != b->channels) return 0; for (c = 0; c < a->channels; c++) if (a->map[c] != b->map[c]) return 0; return 1; } char* pa_channel_map_snprint(char *s, size_t l, const pa_channel_map *map) { unsigned channel; bool first = true; char *e; pa_assert(s); pa_assert(l > 0); pa_assert(map); pa_init_i18n(); if (!pa_channel_map_valid(map)) { pa_snprintf(s, l, _("(invalid)")); return s; } *(e = s) = 0; for (channel = 0; channel < map->channels && l > 1; channel++) { l -= pa_snprintf(e, l, "%s%s", first ? "" : ",", pa_channel_position_to_string(map->map[channel])); e = strchr(e, 0); first = false; } return s; } pa_channel_position_t pa_channel_position_from_string(const char *p) { pa_channel_position_t i; pa_assert(p); /* Some special aliases */ if (pa_streq(p, "left")) return PA_CHANNEL_POSITION_LEFT; else if (pa_streq(p, "right")) return PA_CHANNEL_POSITION_RIGHT; else if (pa_streq(p, "center")) return PA_CHANNEL_POSITION_CENTER; else if (pa_streq(p, "subwoofer")) return PA_CHANNEL_POSITION_SUBWOOFER; for (i = 0; i < PA_CHANNEL_POSITION_MAX; i++) if (pa_streq(p, table[i])) return i; return PA_CHANNEL_POSITION_INVALID; } pa_channel_map *pa_channel_map_parse(pa_channel_map *rmap, const char *s) { const char *state; pa_channel_map map; char *p; pa_assert(rmap); pa_assert(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 (pa_streq(s, "stereo")) { map.channels = 2; map.map[0] = PA_CHANNEL_POSITION_LEFT; map.map[1] = PA_CHANNEL_POSITION_RIGHT; goto finish; } else if (pa_streq(s, "surround-21")) { map.channels = 3; map.map[0] = PA_CHANNEL_POSITION_FRONT_LEFT; map.map[1] = PA_CHANNEL_POSITION_FRONT_RIGHT; map.map[2] = PA_CHANNEL_POSITION_LFE; goto finish; } else if (pa_streq(s, "surround-40")) { 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 (pa_streq(s, "surround-41")) { 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 (pa_streq(s, "surround-50")) { 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 (pa_streq(s, "surround-51")) { 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 (pa_streq(s, "surround-71")) { 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; map.channels = 0; while ((p = pa_split(s, ",", &state))) { pa_channel_position_t f; if (map.channels >= PA_CHANNELS_MAX) { pa_xfree(p); return NULL; } if ((f = pa_channel_position_from_string(p)) == PA_CHANNEL_POSITION_INVALID) { pa_xfree(p); return NULL; } map.map[map.channels++] = f; pa_xfree(p); } finish: if (!pa_channel_map_valid(&map)) return NULL; *rmap = map; return rmap; } int pa_channel_map_valid(const pa_channel_map *map) { unsigned c; pa_assert(map); if (!pa_channels_valid(map->channels)) return 0; for (c = 0; c < map->channels; c++) if (map->map[c] < 0 || map->map[c] >= PA_CHANNEL_POSITION_MAX) return 0; return 1; } int pa_channel_map_compatible(const pa_channel_map *map, const pa_sample_spec *ss) { pa_assert(map); pa_assert(ss); pa_return_val_if_fail(pa_channel_map_valid(map), 0); pa_return_val_if_fail(pa_sample_spec_valid(ss), 0); return map->channels == ss->channels; } int pa_channel_map_superset(const pa_channel_map *a, const pa_channel_map *b) { pa_channel_position_mask_t am, bm; pa_assert(a); pa_assert(b); pa_return_val_if_fail(pa_channel_map_valid(a), 0); if (PA_UNLIKELY(a == b)) return 1; pa_return_val_if_fail(pa_channel_map_valid(b), 0); am = pa_channel_map_mask(a); bm = pa_channel_map_mask(b); return (bm & am) == bm; } int pa_channel_map_can_balance(const pa_channel_map *map) { pa_channel_position_mask_t m; pa_assert(map); pa_return_val_if_fail(pa_channel_map_valid(map), 0); m = pa_channel_map_mask(map); return (PA_CHANNEL_POSITION_MASK_LEFT & m) && (PA_CHANNEL_POSITION_MASK_RIGHT & m); } int pa_channel_map_can_fade(const pa_channel_map *map) { pa_channel_position_mask_t m; pa_assert(map); pa_return_val_if_fail(pa_channel_map_valid(map), 0); m = pa_channel_map_mask(map); return (PA_CHANNEL_POSITION_MASK_FRONT & m) && (PA_CHANNEL_POSITION_MASK_REAR & m); } int pa_channel_map_can_lfe_balance(const pa_channel_map *map) { pa_channel_position_mask_t m; pa_assert(map); pa_return_val_if_fail(pa_channel_map_valid(map), 0); m = pa_channel_map_mask(map); return (PA_CHANNEL_POSITION_MASK_LFE & m) && (PA_CHANNEL_POSITION_MASK_HFE & m); } 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); pa_return_val_if_fail(pa_channel_map_valid(map), NULL); 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); pa_return_val_if_fail(pa_channel_map_valid(map), NULL); memset(in_map, 0, sizeof(in_map)); for (c = 0; c < map->channels; c++) pa_bitset_set(in_map, map->map[c], true); pa_init_i18n(); 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; } int pa_channel_map_has_position(const pa_channel_map *map, pa_channel_position_t p) { unsigned c; pa_return_val_if_fail(pa_channel_map_valid(map), 0); pa_return_val_if_fail(p < PA_CHANNEL_POSITION_MAX, 0); for (c = 0; c < map->channels; c++) if (map->map[c] == p) return 1; return 0; } pa_channel_position_mask_t pa_channel_map_mask(const pa_channel_map *map) { unsigned c; pa_channel_position_mask_t r = 0; pa_return_val_if_fail(pa_channel_map_valid(map), 0); for (c = 0; c < map->channels; c++) r |= PA_CHANNEL_POSITION_MASK(map->map[c]); return r; }