[0] | 1 | //output.h: |
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| 2 | |
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[668] | 3 | /* |
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[5961] | 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2014 |
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[668] | 5 | * |
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| 6 | * This file is part of roard a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * RoarAudio is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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[3517] | 21 | * the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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[668] | 23 | * |
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| 24 | */ |
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| 25 | |
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[0] | 26 | #ifndef _OUTPUT_H_ |
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| 27 | #define _OUTPUT_H_ |
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| 28 | |
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| 29 | #include <roaraudio.h> |
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| 30 | |
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[2735] | 31 | // NOTE: we do not set ROAR_OUTPUT_BUFFER_SAMPLES depending on DEBUG anymore |
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| 32 | // as it caused a lot problems with partly enabled debugging |
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[1668] | 33 | |
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[1739] | 34 | #ifdef ROAR_OUTPUT_CFREQ |
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| 35 | #define ROAR_OUTPUT_BUFFER_SAMPLES (ROAR_RATE_DEFAULT/ROAR_OUTPUT_CFREQ) |
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| 36 | #else |
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[1668] | 37 | // in normal case we use 100 cycles per sec, as we do not know the sample |
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| 38 | // rate at compile time we guess it's normaly the default rate. |
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| 39 | // on OpenBSD we need to set a lower freq, use 20 cycles per sec here as |
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| 40 | // it seems to work. |
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| 41 | // FIXME: find out what the problem is and how to fix |
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| 42 | #ifdef ROAR_OS_OPENBSD |
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| 43 | #define ROAR_OUTPUT_BUFFER_SAMPLES (ROAR_RATE_DEFAULT/20) |
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[2510] | 44 | #define ROAR_OUTPUT_CFREQ 20 |
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[1668] | 45 | #else |
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[1062] | 46 | #define ROAR_OUTPUT_BUFFER_SAMPLES (ROAR_RATE_DEFAULT/100) |
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[2510] | 47 | #define ROAR_OUTPUT_CFREQ 100 |
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[55] | 48 | #endif |
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| 49 | |
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[1668] | 50 | #endif |
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| 51 | |
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[0] | 52 | #define ROAR_OUTPUT_WRITE_SIZE 1024 |
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| 53 | |
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[4111] | 54 | //#define ROAR_OUTPUT_CALC_OUTBUFSIZE(x) (ROAR_OUTPUT_BUFFER_SAMPLES * (x)->channels * ((x)->bits / 8) * ((float)(x)->rate/g_sa->rate)) |
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| 55 | // First rounds the samples count, and makes sure that the outbuffer size is divisible by the framesize (channels * bits/8) |
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| 56 | #define ROAR_OUTPUT_CALC_OUTBUFSIZE(x) ( \ |
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| 57 | ( \ |
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| 58 | (int)(ROAR_OUTPUT_BUFFER_SAMPLES * ((float)(x)->rate/g_sa->rate) + 0.5) \ |
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| 59 | ) * \ |
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| 60 | (x)->channels * ((x)->bits / 8) \ |
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| 61 | ) |
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| 62 | |
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[1061] | 63 | #define ROAR_OUTPUT_CALC_OUTBUFSAMP(x,y) ((y) / ((x)->channels * ((x)->bits / 8)*((float)(x)->rate/g_sa->rate))) |
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[2090] | 64 | #define ROAR_OUTPUT_CALC_OUTBUFSIZE_MAX(x0,x1) (ROAR_OUTPUT_BUFFER_SAMPLES * \ |
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| 65 | ROAR_MAX((x0)->channels,(x1)->channels) * \ |
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| 66 | (ROAR_MAX((x0)->bits, (x1)->bits ) / 8) * \ |
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| 67 | (ROAR_MAX((float)(x0)->rate,(float)(x1)->rate)/g_sa->rate) \ |
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| 68 | ) |
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[0] | 69 | |
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[5192] | 70 | extern void * g_output_buffer; |
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| 71 | extern void * g_input_buffer; |
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| 72 | extern size_t g_output_buffer_len; |
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[4814] | 73 | #define g_input_buffer_len g_output_buffer_len |
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[0] | 74 | |
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| 75 | int output_buffer_init (struct roar_audio_info * info); |
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| 76 | int output_buffer_reinit (void); |
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| 77 | int output_buffer_free (void); |
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| 78 | |
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[4852] | 79 | int output_add (char * drv, char * dev, char * opts, int prim, int count); |
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| 80 | int output_add_default (char * drv, char * dev, char * opts, int prim, int count); |
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| 81 | |
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[0] | 82 | #endif |
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| 83 | |
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| 84 | //ll |
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