[0] | 1 | //output.c: |
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| 2 | |
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[668] | 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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| 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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| 21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 22 | * |
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| 23 | */ |
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| 24 | |
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[0] | 25 | #include "roard.h" |
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| 26 | |
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| 27 | /* |
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| 28 | void * g_output_buffer; |
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| 29 | unsigned int g_output_buffer_len; |
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| 30 | */ |
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| 31 | |
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| 32 | int output_buffer_init (struct roar_audio_info * info) { |
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| 33 | size_t size; // = ROAR_OUTPUT_BUFFER_SAMPLES; |
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| 34 | void * buf; |
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| 35 | |
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| 36 | /* |
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| 37 | size *= info->channels; |
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| 38 | size *= info->bits / 8; |
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| 39 | */ |
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| 40 | |
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| 41 | size = ROAR_OUTPUT_CALC_OUTBUFSIZE(info); |
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| 42 | |
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| 43 | ROAR_DBG("output_buffer_init(*): output buffer size is %i", size); |
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| 44 | |
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| 45 | if ( (buf = malloc(size)) == NULL ) |
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| 46 | return -1; |
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| 47 | |
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| 48 | g_output_buffer = buf; |
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| 49 | g_output_buffer_len = size; |
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| 50 | |
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| 51 | ROAR_DBG("output_buffer_init(*): output buffer is at %p", buf); |
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| 52 | |
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[57] | 53 | #ifdef ROAR_HAVE_MLOCK |
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| 54 | ROAR_MLOCK(buf, size); |
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| 55 | #endif |
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| 56 | |
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[0] | 57 | output_buffer_reinit(); |
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| 58 | |
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| 59 | return 0; |
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| 60 | } |
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| 61 | |
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| 62 | int output_buffer_reinit (void) { |
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| 63 | |
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| 64 | if ( g_output_buffer != NULL ) |
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| 65 | memset(g_output_buffer, 0, g_output_buffer_len); |
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| 66 | |
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| 67 | return 0; |
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| 68 | } |
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| 69 | |
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| 70 | int output_buffer_free (void) { |
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| 71 | ROAR_DBG("output_buffer_init(*): freeing output buffer at %p", g_output_buffer); |
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| 72 | |
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| 73 | if ( g_output_buffer ) |
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| 74 | free(g_output_buffer); |
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| 75 | |
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| 76 | g_output_buffer = NULL; |
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| 77 | g_output_buffer_len = 0; |
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| 78 | |
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| 79 | return 0; |
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| 80 | } |
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| 81 | |
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| 82 | int output_buffer_flush (DRIVER_USERDATA_T inst, int driver) { |
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| 83 | ROAR_DBG("output_buffer_init(*): flushing output buffer"); |
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| 84 | |
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| 85 | return driver_write(inst, driver, g_output_buffer, g_output_buffer_len); |
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| 86 | } |
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| 87 | |
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| 88 | //ll |
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