PulseAudio 0.9.22-5.mga1
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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 00123 #define PA_VOLUME_UI_MAX (pa_sw_volume_from_dB(+11.0)) 00124 00126 #define PA_VOLUME_INVALID ((pa_volume_t) UINT32_MAX) 00127 00129 typedef struct pa_cvolume { 00130 uint8_t channels; 00131 pa_volume_t values[PA_CHANNELS_MAX]; 00132 } pa_cvolume; 00133 00135 int pa_cvolume_equal(const pa_cvolume *a, const pa_cvolume *b) PA_GCC_PURE; 00136 00140 pa_cvolume* pa_cvolume_init(pa_cvolume *a); 00141 00143 #define pa_cvolume_reset(a, n) pa_cvolume_set((a), (n), PA_VOLUME_NORM) 00144 00146 #define pa_cvolume_mute(a, n) pa_cvolume_set((a), (n), PA_VOLUME_MUTED) 00147 00149 pa_cvolume* pa_cvolume_set(pa_cvolume *a, unsigned channels, pa_volume_t v); 00150 00156 #define PA_CVOLUME_SNPRINT_MAX 320 00157 00159 char *pa_cvolume_snprint(char *s, size_t l, const pa_cvolume *c); 00160 00166 #define PA_SW_CVOLUME_SNPRINT_DB_MAX 448 00167 00169 char *pa_sw_cvolume_snprint_dB(char *s, size_t l, const pa_cvolume *c); 00170 00176 #define PA_VOLUME_SNPRINT_MAX 10 00177 00179 char *pa_volume_snprint(char *s, size_t l, pa_volume_t v); 00180 00186 #define PA_SW_VOLUME_SNPRINT_DB_MAX 10 00187 00189 char *pa_sw_volume_snprint_dB(char *s, size_t l, pa_volume_t v); 00190 00192 pa_volume_t pa_cvolume_avg(const pa_cvolume *a) PA_GCC_PURE; 00193 00199 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; 00200 00202 pa_volume_t pa_cvolume_max(const pa_cvolume *a) PA_GCC_PURE; 00203 00209 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; 00210 00212 pa_volume_t pa_cvolume_min(const pa_cvolume *a) PA_GCC_PURE; 00213 00219 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; 00220 00222 int pa_cvolume_valid(const pa_cvolume *v) PA_GCC_PURE; 00223 00225 int pa_cvolume_channels_equal_to(const pa_cvolume *a, pa_volume_t v) PA_GCC_PURE; 00226 00228 #define pa_cvolume_is_muted(a) pa_cvolume_channels_equal_to((a), PA_VOLUME_MUTED) 00229 00231 #define pa_cvolume_is_norm(a) pa_cvolume_channels_equal_to((a), PA_VOLUME_NORM) 00232 00236 pa_volume_t pa_sw_volume_multiply(pa_volume_t a, pa_volume_t b) PA_GCC_CONST; 00237 00241 pa_cvolume *pa_sw_cvolume_multiply(pa_cvolume *dest, const pa_cvolume *a, const pa_cvolume *b); 00242 00247 pa_cvolume *pa_sw_cvolume_multiply_scalar(pa_cvolume *dest, const pa_cvolume *a, pa_volume_t b); 00248 00253 pa_volume_t pa_sw_volume_divide(pa_volume_t a, pa_volume_t b) PA_GCC_CONST; 00254 00258 pa_cvolume *pa_sw_cvolume_divide(pa_cvolume *dest, const pa_cvolume *a, const pa_cvolume *b); 00259 00264 pa_cvolume *pa_sw_cvolume_divide_scalar(pa_cvolume *dest, const pa_cvolume *a, pa_volume_t b); 00265 00267 pa_volume_t pa_sw_volume_from_dB(double f) PA_GCC_CONST; 00268 00270 double pa_sw_volume_to_dB(pa_volume_t v) PA_GCC_CONST; 00271 00274 pa_volume_t pa_sw_volume_from_linear(double v) PA_GCC_CONST; 00275 00277 double pa_sw_volume_to_linear(pa_volume_t v) PA_GCC_CONST; 00278 00279 #ifdef INFINITY 00280 #define PA_DECIBEL_MININFTY ((double) -INFINITY) 00281 #else 00282 00283 #define PA_DECIBEL_MININFTY ((double) -200.0) 00284 #endif 00285 00287 pa_cvolume *pa_cvolume_remap(pa_cvolume *v, const pa_channel_map *from, const pa_channel_map *to); 00288 00291 int pa_cvolume_compatible(const pa_cvolume *v, const pa_sample_spec *ss) PA_GCC_PURE; 00292 00295 int pa_cvolume_compatible_with_channel_map(const pa_cvolume *v, const pa_channel_map *cm) PA_GCC_PURE; 00296 00302 float pa_cvolume_get_balance(const pa_cvolume *v, const pa_channel_map *map) PA_GCC_PURE; 00303 00313 pa_cvolume* pa_cvolume_set_balance(pa_cvolume *v, const pa_channel_map *map, float new_balance); 00314 00320 float pa_cvolume_get_fade(const pa_cvolume *v, const pa_channel_map *map) PA_GCC_PURE; 00321 00331 pa_cvolume* pa_cvolume_set_fade(pa_cvolume *v, const pa_channel_map *map, float new_fade); 00332 00336 pa_cvolume* pa_cvolume_scale(pa_cvolume *v, pa_volume_t max); 00337 00342 pa_cvolume* pa_cvolume_scale_mask(pa_cvolume *v, pa_volume_t max, pa_channel_map *cm, pa_channel_position_mask_t mask); 00343 00349 pa_cvolume* pa_cvolume_set_position(pa_cvolume *cv, const pa_channel_map *map, pa_channel_position_t t, pa_volume_t v); 00350 00355 pa_volume_t pa_cvolume_get_position(pa_cvolume *cv, const pa_channel_map *map, pa_channel_position_t t) PA_GCC_PURE; 00356 00360 pa_cvolume* pa_cvolume_merge(pa_cvolume *dest, const pa_cvolume *a, const pa_cvolume *b); 00361 00364 pa_cvolume* pa_cvolume_inc(pa_cvolume *v, pa_volume_t inc); 00365 00368 pa_cvolume* pa_cvolume_dec(pa_cvolume *v, pa_volume_t dec); 00369 00370 PA_C_DECL_END 00371 00372 #endif