| Dave Sparks | 56c99cd | 2009-08-24 17:35:45 -0700 | [diff] [blame] | 1 | /*---------------------------------------------------------------------------- |
| 2 | * |
| 3 | * File: |
| 4 | * eas_wt_IPC_frame.h |
| 5 | * |
| 6 | * Contents and purpose: |
| 7 | * This module contains data definitions for the interprocessor |
| 8 | * communications framework for a split-architecture synthesizer. |
| 9 | * |
| 10 | * This sample version writes IPC data to a file that can be used |
| 11 | * as a test vector for the DSP simulator. For a real-time system |
| 12 | * the file I/O is replaced with an IPC protocol in the hardware. |
| 13 | * |
| 14 | * Synchronization with the DSP is accomplished at the API level, |
| 15 | * i.e. the host code should call EAS_Render when it is ready to |
| 16 | * buffer another block of data for transmission to the DSP. |
| 17 | * |
| 18 | * Copyright Sonic Network Inc. 2005 |
| The Android Open Source Project | 7df3010 | 2009-03-03 19:30:38 -0800 | [diff] [blame] | 19 | |
| 20 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 21 | * you may not use this file except in compliance with the License. |
| 22 | * You may obtain a copy of the License at |
| 23 | * |
| 24 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 25 | * |
| 26 | * Unless required by applicable law or agreed to in writing, software |
| 27 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 28 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 29 | * See the License for the specific language governing permissions and |
| 30 | * limitations under the License. |
| Dave Sparks | 56c99cd | 2009-08-24 17:35:45 -0700 | [diff] [blame] | 31 | * |
| 32 | *---------------------------------------------------------------------------- |
| 33 | * Revision Control: |
| 34 | * $Revision: 818 $ |
| 35 | * $Date: 2007-08-02 15:19:41 -0700 (Thu, 02 Aug 2007) $ |
| 36 | *---------------------------------------------------------------------------- |
| 37 | */ |
| 38 | |
| 39 | #ifndef _EAS_WT_IPC_FRAME_H |
| 40 | #define _EAS_WT_IPC_FRAME_H |
| 41 | |
| 42 | /*---------------------------------------------------------------------------- |
| 43 | * S_WT_FRAME |
| 44 | * |
| 45 | * This structure contains the common parameters that are updated |
| 46 | *for each frame of audio. |
| 47 | *---------------------------------------------------------------------------- |
| 48 | */ |
| 49 | typedef struct s_wt_frame_tag |
| 50 | { |
| 51 | EAS_I32 gainTarget; |
| 52 | EAS_I32 phaseIncrement; |
| 53 | |
| 54 | #if defined(_FILTER_ENABLED) |
| 55 | EAS_I32 k; |
| 56 | EAS_I32 b1; |
| 57 | EAS_I32 b2; |
| 58 | #endif |
| 59 | } S_WT_FRAME; |
| 60 | |
| 61 | /*---------------------------------------------------------------------------- |
| 62 | * S_WT_CONFIG |
| 63 | * |
| 64 | * This structure contains state data for the wavetable engine |
| 65 | *---------------------------------------------------------------------------- |
| 66 | */ |
| 67 | typedef struct s_wt_config_tag |
| 68 | { |
| 69 | EAS_U32 loopEnd; /* points to last PCM sample (not 1 beyond last) */ |
| 70 | EAS_U32 loopStart; /* points to first sample at start of loop */ |
| 71 | EAS_U32 phaseAccum; /* current sample, integer portion of phase */ |
| 72 | |
| 73 | #if (NUM_OUTPUT_CHANNELS == 2) |
| 74 | EAS_I16 gainLeft; /* left channel gain */ |
| 75 | EAS_I16 gainRight; /* right channel gain */ |
| 76 | #endif |
| 77 | |
| 78 | EAS_I16 gain; /* current voice gain */ |
| 79 | } S_WT_CONFIG; |
| 80 | |
| 81 | #endif |
| 82 | |