| 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 - 2009-2011 |
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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, 51 Franklin Street, Fifth Floor, |
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| 22 | * Boston, MA 02110-1301, USA. |
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| 23 | * |
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| 24 | */ |
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| 25 | |
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| 26 | #include "roard.h" |
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| 27 | |
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| 28 | int waveform_init (void) { |
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| 29 | struct roar_stream_server * ss; |
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| 30 | struct roar_stream * s; |
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| 31 | int i; |
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| 32 | char cmap[ROAR_MAX_CHANNELS]; |
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| 33 | |
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| 34 | if ( (g_waveform_mixer.stream = add_mixer(ROAR_SUBSYS_WAVEFORM, _MIXER_NAME("Waveform"), &ss)) == -1 ) |
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| 35 | return -1; |
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| 36 | |
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| 37 | g_waveform_mixer.ss = ss; |
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| 38 | |
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| 39 | s = ROAR_STREAM(ss); |
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| 40 | |
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| 41 | memcpy(&(s->info), g_sa, sizeof(struct roar_audio_info)); |
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| 42 | |
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| 43 | roardsp_chanlist_init(cmap, s->info.channels, ROARDSP_CHANLIST_MAP_ROARAUDIO); |
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| 44 | streams_set_map(g_waveform_mixer.stream, cmap, s->info.channels); |
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| 45 | |
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| 46 | ss->state = ROAR_STREAMSTATE_OLD; |
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| 47 | |
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| 48 | for (i = 0; i < ROAR_STREAMS_MAX; i++) { |
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| 49 | if ( g_streams[i] != NULL ) { |
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| 50 | if ( streams_get_subsys(i) == ROAR_SUBSYS_WAVEFORM ) { |
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| 51 | streams_set_mixer_stream(i, g_waveform_mixer.stream); |
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| 52 | } |
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| 53 | } |
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| 54 | } |
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| 55 | |
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| 56 | return 0; |
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| 57 | } |
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| 58 | |
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| 59 | int waveform_free (void) { |
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| 60 | return 0; |
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| 61 | } |
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| 62 | |
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| 63 | int waveform_update_mixer (void) { |
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| 64 | if ( streams_get_flag(g_waveform_mixer.stream, ROAR_FLAG_MUTE) == 1 ) { |
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| 65 | memset(g_output_buffer, 0, (g_sa->bits*ROAR_OUTPUT_BUFFER_SAMPLES*g_sa->channels)/8); |
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| 66 | return 0; |
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| 67 | } |
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| 68 | |
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| 69 | if ( need_vol_change(ROAR_STREAM(g_waveform_mixer.ss)->info.channels, &(g_waveform_mixer.ss->mixer)) ) { |
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| 70 | roar_amp_pcm(g_output_buffer, g_sa->bits, g_output_buffer, |
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| 71 | ROAR_OUTPUT_BUFFER_SAMPLES*g_sa->channels, g_sa->channels, |
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| 72 | &(g_waveform_mixer.ss->mixer)); |
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| 73 | } |
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| 74 | |
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| 75 | streams_ltm_calc(g_waveform_mixer.stream, &(ROAR_STREAM(g_waveform_mixer.ss)->info), g_output_buffer, (g_sa->bits*ROAR_OUTPUT_BUFFER_SAMPLES*g_sa->channels)/8); |
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| 76 | |
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| 77 | return 0; |
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| 78 | } |
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| 79 | |
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| 80 | //ll |
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