1 | //waveform.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2009 |
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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 | |
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27 | int waveform_init (void) { |
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28 | struct roar_stream_server * ss; |
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29 | struct roar_stream * s; |
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30 | |
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31 | if ( (g_waveform_mixer.stream = add_mixer(ROAR_SUBSYS_WAVEFORM, _MIXER_NAME("Waveform"), &ss)) == -1 ) |
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32 | return -1; |
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33 | |
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34 | g_waveform_mixer.ss = ss; |
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35 | |
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36 | s = ROAR_STREAM(ss); |
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37 | |
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38 | memcpy(&(s->info), g_sa, sizeof(struct roar_audio_info)); |
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39 | |
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40 | ss->state = ROAR_STREAMSTATE_OLD; |
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41 | |
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42 | return 0; |
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43 | } |
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44 | |
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45 | int waveform_free (void) { |
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46 | return 0; |
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47 | } |
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48 | |
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49 | int waveform_update_mixer (void) { |
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50 | if ( streams_get_flag(g_waveform_mixer.stream, ROAR_FLAG_MUTE) == 1 ) { |
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51 | memset(g_output_buffer, 0, (g_sa->bits*ROAR_OUTPUT_BUFFER_SAMPLES*g_sa->channels)/8); |
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52 | return 0; |
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53 | } |
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54 | |
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55 | if ( !need_vol_change(ROAR_STREAM(g_waveform_mixer.ss)->info.channels, &(g_waveform_mixer.ss->mixer)) ) |
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56 | return 0; |
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57 | |
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58 | roar_amp_pcm(g_output_buffer, g_sa->bits, g_output_buffer, |
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59 | ROAR_OUTPUT_BUFFER_SAMPLES*g_sa->channels, g_sa->channels, |
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60 | &(g_waveform_mixer.ss->mixer)); |
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61 | |
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62 | return 0; |
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63 | } |
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64 | |
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65 | //ll |
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