1 #ifndef fooremapfoo 2 #define fooremapfoo 3 4 /*** 5 This file is part of PulseAudio. 6 7 Copyright 2004-2006 Lennart Poettering 8 Copyright 2009 Wim Taymans <wim.taymans@collabora.co.uk.com> 9 10 PulseAudio is free software; you can redistribute it and/or modify 11 it under the terms of the GNU Lesser General Public License as published 12 by the Free Software Foundation; either version 2.1 of the License, 13 or (at your option) any later version. 14 15 PulseAudio is distributed in the hope that it will be useful, but 16 WITHOUT ANY WARRANTY; without even the implied warranty of 17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 General Public License for more details. 19 20 You should have received a copy of the GNU Lesser General Public License 21 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>. 22 ***/ 23 24 #include <pulse/sample.h> 25 26 typedef struct pa_remap pa_remap_t; 27 28 typedef void (*pa_do_remap_func_t) (pa_remap_t *m, void *d, const void *s, unsigned n); 29 30 struct pa_remap { 31 pa_sample_format_t format; 32 pa_sample_spec i_ss, o_ss; 33 float map_table_f[PA_CHANNELS_MAX][PA_CHANNELS_MAX]; 34 int32_t map_table_i[PA_CHANNELS_MAX][PA_CHANNELS_MAX]; 35 pa_do_remap_func_t do_remap; 36 void *state; /* optional state information for the remap function */ 37 }; 38 39 void pa_init_remap_func(pa_remap_t *m); 40 41 /* custom installation of init functions */ 42 typedef void (*pa_init_remap_func_t) (pa_remap_t *m); 43 44 pa_init_remap_func_t pa_get_init_remap_func(void); 45 void pa_set_init_remap_func(pa_init_remap_func_t func); 46 47 /* Check if remapping can be performed by just copying some or all input 48 * channels' data to output channels. Returns true and a table of input 49 * channel indices, or false otherwise. 50 * 51 * The table contains an entry for each output channels. Each table entry given 52 * either the input channel index to be copied, or -1 indicating that the 53 * output channel is not used and hence zero. 54 */ 55 bool pa_setup_remap_arrange(const pa_remap_t *m, int8_t arrange[PA_CHANNELS_MAX]); 56 57 void pa_set_remap_func(pa_remap_t *m, pa_do_remap_func_t func_s16, 58 pa_do_remap_func_t func_s32, pa_do_remap_func_t func_float); 59 60 #endif /* fooremapfoo */ 61