[1563] | 1 | //stream.c: |
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[1559] | 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009 |
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| 5 | * The code (may) include prototypes and comments (and maybe |
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| 6 | * other code fragements) from EsounD. |
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| 7 | * They are mostly copyrighted by Eric B. Mitchell (aka 'Ricdude) |
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| 8 | * <ericmit@ix.netcom.com>. For more information see AUTHORS.esd. |
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| 9 | * |
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| 10 | * This file is part of libroaresd a part of RoarAudio, |
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| 11 | * a cross-platform sound system for both, home and professional use. |
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| 12 | * See README for details. |
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| 13 | * |
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| 14 | * This file is free software; you can redistribute it and/or modify |
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| 15 | * it under the terms of the GNU General Public License version 3 |
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| 16 | * as published by the Free Software Foundation. |
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| 17 | * |
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| 18 | * RoarAudio is distributed in the hope that it will be useful, |
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| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 21 | * GNU General Public License for more details. |
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| 22 | * |
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| 23 | * You should have received a copy of the GNU General Public License |
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| 24 | * along with this software; see the file COPYING. If not, write to |
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| 25 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 26 | * |
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| 27 | * NOTE for everyone want's to change something and send patches: |
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| 28 | * read README and HACKING! There a addition information on |
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| 29 | * the license of this document you need to read before you send |
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| 30 | * any patches. |
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| 31 | */ |
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| 32 | |
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[1571] | 33 | #define ROAR_USE_OWN_SNDIO_HDL |
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[1559] | 34 | #include "libroarsndio.h" |
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| 35 | |
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[2375] | 36 | // this is void because we do not care about if this failed... |
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| 37 | static void send_vol_event (struct sio_hdl * hdl) { |
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| 38 | int channels; |
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| 39 | struct roar_mixer_settings mixer; |
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| 40 | int i; |
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| 41 | unsigned vol; |
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| 42 | |
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| 43 | // in case of no event handler we do not send the event at all ;) |
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| 44 | if ( hdl->on_vol == NULL ) |
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| 45 | return; |
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| 46 | |
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| 47 | if ( roar_get_vol(&(hdl->con), roar_stream_get_id(&(hdl->stream)), &mixer, &channels) == -1 ) |
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| 48 | return; |
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| 49 | |
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| 50 | ROAR_DBG("send_vol_event(*): channels=%i", channels); |
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| 51 | |
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| 52 | switch (channels) { |
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| 53 | case 1: |
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| 54 | ROAR_DBG("send_vol_event(*): mixer.scale=%i, mixer.mixer={%i,...}", mixer.scale, mixer.mixer[0]); |
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| 55 | vol = mixer.mixer[0] * SIO_MAXVOL; |
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| 56 | vol /= mixer.scale; |
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| 57 | ROAR_DBG("send_vol_event(*): vol=%u", vol); |
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| 58 | break; |
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| 59 | case 2: |
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| 60 | vol = (mixer.mixer[0] + mixer.mixer[1]) * SIO_MAXVOL / mixer.scale / 2; |
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| 61 | break; |
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| 62 | default: |
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| 63 | vol = 0; |
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| 64 | for (i = 0; i < channels; i++) |
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| 65 | vol += mixer.mixer[i]; |
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| 66 | |
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| 67 | vol /= channels; |
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| 68 | vol *= SIO_MAXVOL; |
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| 69 | vol /= mixer.scale; |
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| 70 | break; |
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| 71 | } |
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| 72 | |
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| 73 | ROAR_DBG("send_vol_event(*): vol=%u", vol); |
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| 74 | hdl->on_vol(hdl->on_vol_arg, vol); |
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| 75 | } |
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| 76 | |
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[1567] | 77 | #define _i(x) (hdl->info.x) |
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[1563] | 78 | int sio_start (struct sio_hdl * hdl) { |
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[2019] | 79 | |
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[2020] | 80 | // TODO: FIXME: use full VIO support here, not fh->vio! |
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| 81 | |
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[1567] | 82 | if ( hdl == NULL ) |
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| 83 | return 0; |
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| 84 | |
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[2019] | 85 | if ( hdl->stream_opened ) |
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| 86 | return 0; |
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| 87 | |
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[2843] | 88 | if ( roar_vio_simple_new_stream_obj(&(hdl->svio), &(hdl->con), &(hdl->stream), |
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| 89 | _i(rate), _i(channels), _i(bits), _i(codec), hdl->dir) == -1 ) |
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[1567] | 90 | return 0; |
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| 91 | |
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[2022] | 92 | ROAR_DBG("sio_start(hdl=%p): rate=%i, channels=%i, bits=%i, codec=%i", hdl, _i(rate), _i(channels), _i(bits), _i(codec)); |
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| 93 | |
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[2375] | 94 | send_vol_event(hdl); |
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[2019] | 95 | |
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| 96 | hdl->stream_opened = 1; |
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[1567] | 97 | |
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| 98 | return 1; |
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[1563] | 99 | } |
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[1567] | 100 | #undef _i |
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[1563] | 101 | |
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| 102 | int sio_stop (struct sio_hdl * hdl) { |
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| 103 | |
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| 104 | if ( hdl == NULL ) |
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| 105 | return 0; |
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| 106 | |
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[2019] | 107 | if ( !hdl->stream_opened ) |
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[1563] | 108 | return 0; |
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| 109 | |
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[2019] | 110 | roar_vio_close(&(hdl->svio)); |
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[1563] | 111 | |
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[2019] | 112 | hdl->stream_opened = -1; |
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[1563] | 113 | |
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| 114 | return 1; |
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| 115 | } |
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| 116 | |
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| 117 | size_t sio_read (struct sio_hdl * hdl, void * addr, size_t nbytes) { |
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| 118 | ssize_t ret; |
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| 119 | |
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| 120 | if ( hdl == NULL ) |
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| 121 | return 0; |
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| 122 | |
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[2019] | 123 | if ( !hdl->stream_opened ) |
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[1563] | 124 | return 0; |
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| 125 | |
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[2019] | 126 | if ( (ret = roar_vio_read(&(hdl->svio), addr, nbytes)) < 0 ) |
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[1563] | 127 | return 0; |
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| 128 | |
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| 129 | return ret; |
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| 130 | } |
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[2574] | 131 | size_t sio_write (struct sio_hdl * hdl, const void * addr, size_t nbytes) { |
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[1563] | 132 | ssize_t ret; |
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| 133 | |
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| 134 | if ( hdl == NULL ) |
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| 135 | return 0; |
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| 136 | |
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[2019] | 137 | if ( !hdl->stream_opened ) |
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[1563] | 138 | return 0; |
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| 139 | |
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[2574] | 140 | if ( (ret = roar_vio_write(&(hdl->svio), (void*) addr, nbytes)) < 0 ) |
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[1563] | 141 | return 0; |
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| 142 | |
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[1577] | 143 | if ( hdl->on_move != NULL ) { |
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| 144 | hdl->on_move(hdl->on_move_arg, 8*ret/(hdl->info.channels * hdl->info.bits)); |
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| 145 | } |
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| 146 | |
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[1563] | 147 | return ret; |
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| 148 | } |
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| 149 | |
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[1559] | 150 | //ll |
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