PulseAudio 0.9.22
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00001 #ifndef foovolumehfoo 00002 #define foovolumehfoo 00003 00004 /*** 00005 This file is part of PulseAudio. 00006 00007 Copyright 2004-2006 Lennart Poettering 00008 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB 00009 00010 PulseAudio is free software; you can redistribute it and/or modify 00011 it under the terms of the GNU Lesser General Public License as published 00012 by the Free Software Foundation; either version 2.1 of the License, 00013 or (at your option) any later version. 00014 00015 PulseAudio is distributed in the hope that it will be useful, but 00016 WITHOUT ANY WARRANTY; without even the implied warranty of 00017 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00018 General Public License for more details. 00019 00020 You should have received a copy of the GNU Lesser General Public License 00021 along with PulseAudio; if not, write to the Free Software 00022 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 00023 USA. 00024 ***/ 00025 00026 #include <inttypes.h> 00027 #include <limits.h> 00028 00029 #include <pulse/cdecl.h> 00030 #include <pulse/gccmacro.h> 00031 #include <pulse/sample.h> 00032 #include <pulse/channelmap.h> 00033 #include <pulse/version.h> 00034 00100 PA_C_DECL_BEGIN 00101 00107 typedef uint32_t pa_volume_t; 00108 00110 #define PA_VOLUME_NORM ((pa_volume_t) 0x10000U) 00111 00113 #define PA_VOLUME_MUTED ((pa_volume_t) 0U) 00114 00116 #define PA_VOLUME_MAX ((pa_volume_t) UINT32_MAX-1) 00117 00119 #define PA_VOLUME_INVALID ((pa_volume_t) UINT32_MAX) 00120 00122 typedef struct pa_cvolume { 00123 uint8_t channels; 00124 pa_volume_t values[PA_CHANNELS_MAX]; 00125 } pa_cvolume; 00126 00128 int pa_cvolume_equal(const pa_cvolume *a, const pa_cvolume *b) PA_GCC_PURE; 00129 00133 pa_cvolume* pa_cvolume_init(pa_cvolume *a); 00134 00136 #define pa_cvolume_reset(a, n) pa_cvolume_set((a), (n), PA_VOLUME_NORM) 00137 00139 #define pa_cvolume_mute(a, n) pa_cvolume_set((a), (n), PA_VOLUME_MUTED) 00140 00142 pa_cvolume* pa_cvolume_set(pa_cvolume *a, unsigned channels, pa_volume_t v); 00143 00149 #define PA_CVOLUME_SNPRINT_MAX 320 00150 00152 char *pa_cvolume_snprint(char *s, size_t l, const pa_cvolume *c); 00153 00159 #define PA_SW_CVOLUME_SNPRINT_DB_MAX 448 00160 00162 char *pa_sw_cvolume_snprint_dB(char *s, size_t l, const pa_cvolume *c); 00163 00169 #define PA_VOLUME_SNPRINT_MAX 10 00170 00172 char *pa_volume_snprint(char *s, size_t l, pa_volume_t v); 00173 00179 #define PA_SW_VOLUME_SNPRINT_DB_MAX 10 00180 00182 char *pa_sw_volume_snprint_dB(char *s, size_t l, pa_volume_t v); 00183 00185 pa_volume_t pa_cvolume_avg(const pa_cvolume *a) PA_GCC_PURE; 00186 00192 pa_volume_t pa_cvolume_avg_mask(const pa_cvolume *a, const pa_channel_map *cm, pa_channel_position_mask_t mask) PA_GCC_PURE; 00193 00195 pa_volume_t pa_cvolume_max(const pa_cvolume *a) PA_GCC_PURE; 00196 00202 pa_volume_t pa_cvolume_max_mask(const pa_cvolume *a, const pa_channel_map *cm, pa_channel_position_mask_t mask) PA_GCC_PURE; 00203 00205 pa_volume_t pa_cvolume_min(const pa_cvolume *a) PA_GCC_PURE; 00206 00212 pa_volume_t pa_cvolume_min_mask(const pa_cvolume *a, const pa_channel_map *cm, pa_channel_position_mask_t mask) PA_GCC_PURE; 00213 00215 int pa_cvolume_valid(const pa_cvolume *v) PA_GCC_PURE; 00216 00218 int pa_cvolume_channels_equal_to(const pa_cvolume *a, pa_volume_t v) PA_GCC_PURE; 00219 00221 #define pa_cvolume_is_muted(a) pa_cvolume_channels_equal_to((a), PA_VOLUME_MUTED) 00222 00224 #define pa_cvolume_is_norm(a) pa_cvolume_channels_equal_to((a), PA_VOLUME_NORM) 00225 00229 pa_volume_t pa_sw_volume_multiply(pa_volume_t a, pa_volume_t b) PA_GCC_CONST; 00230 00234 pa_cvolume *pa_sw_cvolume_multiply(pa_cvolume *dest, const pa_cvolume *a, const pa_cvolume *b); 00235 00240 pa_cvolume *pa_sw_cvolume_multiply_scalar(pa_cvolume *dest, const pa_cvolume *a, pa_volume_t b); 00241 00246 pa_volume_t pa_sw_volume_divide(pa_volume_t a, pa_volume_t b) PA_GCC_CONST; 00247 00251 pa_cvolume *pa_sw_cvolume_divide(pa_cvolume *dest, const pa_cvolume *a, const pa_cvolume *b); 00252 00257 pa_cvolume *pa_sw_cvolume_divide_scalar(pa_cvolume *dest, const pa_cvolume *a, pa_volume_t b); 00258 00260 pa_volume_t pa_sw_volume_from_dB(double f) PA_GCC_CONST; 00261 00263 double pa_sw_volume_to_dB(pa_volume_t v) PA_GCC_CONST; 00264 00267 pa_volume_t pa_sw_volume_from_linear(double v) PA_GCC_CONST; 00268 00270 double pa_sw_volume_to_linear(pa_volume_t v) PA_GCC_CONST; 00271 00272 #ifdef INFINITY 00273 #define PA_DECIBEL_MININFTY ((double) -INFINITY) 00274 #else 00275 00276 #define PA_DECIBEL_MININFTY ((double) -200.0) 00277 #endif 00278 00280 pa_cvolume *pa_cvolume_remap(pa_cvolume *v, const pa_channel_map *from, const pa_channel_map *to); 00281 00284 int pa_cvolume_compatible(const pa_cvolume *v, const pa_sample_spec *ss) PA_GCC_PURE; 00285 00288 int pa_cvolume_compatible_with_channel_map(const pa_cvolume *v, const pa_channel_map *cm) PA_GCC_PURE; 00289 00295 float pa_cvolume_get_balance(const pa_cvolume *v, const pa_channel_map *map) PA_GCC_PURE; 00296 00306 pa_cvolume* pa_cvolume_set_balance(pa_cvolume *v, const pa_channel_map *map, float new_balance); 00307 00313 float pa_cvolume_get_fade(const pa_cvolume *v, const pa_channel_map *map) PA_GCC_PURE; 00314 00324 pa_cvolume* pa_cvolume_set_fade(pa_cvolume *v, const pa_channel_map *map, float new_fade); 00325 00329 pa_cvolume* pa_cvolume_scale(pa_cvolume *v, pa_volume_t max); 00330 00335 pa_cvolume* pa_cvolume_scale_mask(pa_cvolume *v, pa_volume_t max, pa_channel_map *cm, pa_channel_position_mask_t mask); 00336 00342 pa_cvolume* pa_cvolume_set_position(pa_cvolume *cv, const pa_channel_map *map, pa_channel_position_t t, pa_volume_t v); 00343 00348 pa_volume_t pa_cvolume_get_position(pa_cvolume *cv, const pa_channel_map *map, pa_channel_position_t t) PA_GCC_PURE; 00349 00353 pa_cvolume* pa_cvolume_merge(pa_cvolume *dest, const pa_cvolume *a, const pa_cvolume *b); 00354 00357 pa_cvolume* pa_cvolume_inc(pa_cvolume *v, pa_volume_t inc); 00358 00361 pa_cvolume* pa_cvolume_dec(pa_cvolume *v, pa_volume_t dec); 00362 00363 PA_C_DECL_END 00364 00365 #endif