1 | //driver_esd.c: |
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2 | |
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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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25 | #include "roard.h" |
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26 | #ifdef ROAR_HAVE_ESD |
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27 | |
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28 | /* |
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29 | We could use inst as our fh directly. But esd works with unsigned at 8 bits and |
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30 | signed at 16 bits per sample. (why???) so we need to convert because we get signed at both, |
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31 | 8 and 16 bits per sample. so we use inst as an array of two ints: 0: fh, 1: are we in 8 bit mode? |
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32 | */ |
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33 | |
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34 | int driver_esd_open_sysio(DRIVER_USERDATA_T * inst, char * device, struct roar_audio_info * info) { |
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35 | esd_format_t format = ESD_STREAM | ESD_PLAY; |
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36 | char name[80] = "roard"; |
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37 | int * di = malloc(sizeof(int)*2); |
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38 | |
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39 | if ( di == NULL ) |
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40 | return -1; |
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41 | |
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42 | *inst = (DRIVER_USERDATA_T)di; |
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43 | |
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44 | format |= info->bits == 16 ? ESD_BITS16 : ESD_BITS8; |
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45 | format |= info->channels == 2 ? ESD_STEREO : ESD_MONO; |
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46 | |
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47 | di[1] = info->bits == 8; |
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48 | |
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49 | di[0] = esd_play_stream_fallback(format, info->rate, device, name); |
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50 | |
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51 | shutdown(di[0], SHUT_RD); |
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52 | |
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53 | if ( di[0] == -1 ) { |
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54 | free(di); |
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55 | *inst = NULL; |
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56 | return -1; |
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57 | } |
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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 driver_esd_open_vio(struct roar_vio_calls * inst, char * device, struct roar_audio_info * info, int fh) { |
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63 | |
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64 | if ( fh != -1 ) |
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65 | return -1; |
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66 | |
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67 | inst->read = driver_esd_read; |
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68 | inst->write = driver_esd_write; |
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69 | return driver_esd_open_sysio(&(inst->inst), device, info); |
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70 | } |
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71 | |
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72 | int driver_esd_close(DRIVER_USERDATA_T inst) { |
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73 | int fh; |
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74 | |
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75 | inst = ((struct roar_vio_calls *)inst)->inst; |
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76 | |
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77 | fh = *(int*)inst; |
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78 | |
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79 | free((void*)inst); |
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80 | |
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81 | return esd_close(fh); |
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82 | } |
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83 | |
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84 | int driver_esd_pause(DRIVER_USERDATA_T inst, int newstate) { |
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85 | return -1; |
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86 | } |
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87 | |
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88 | int driver_esd_write(struct roar_vio_calls * inst, void * buf, size_t len) { |
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89 | int * di = (int*)((struct roar_vio_calls *)inst)->inst; |
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90 | |
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91 | if ( di[1] ) |
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92 | roar_conv_codec_s2u8(buf, buf, len); |
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93 | |
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94 | return write(di[0], buf, len); |
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95 | } |
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96 | |
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97 | int driver_esd_read(struct roar_vio_calls * inst, void * buf, size_t len) { |
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98 | return read(*(int*)((struct roar_vio_calls *)inst)->inst, buf, len); |
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99 | } |
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100 | |
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101 | int driver_esd_flush(DRIVER_USERDATA_T inst) { |
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102 | return 0; |
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103 | } |
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104 | |
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105 | |
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106 | #endif |
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107 | //ll |
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