1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 /* Pitch implementation */ 18 19 #include "sles_allinclusive.h" 20 21 22 static SLresult IPitch_SetPitch(SLPitchItf self, SLpermille pitch) 23 { 24 SL_ENTER_INTERFACE 25 26 IPitch *thiz = (IPitch *) self; 27 // const, so no lock needed 28 if (!(thiz->mMinPitch <= pitch && pitch <= thiz->mMaxPitch)) { 29 result = SL_RESULT_PARAMETER_INVALID; 30 } else { 31 interface_lock_poke(thiz); 32 thiz->mPitch = pitch; 33 interface_unlock_poke(thiz); 34 result = SL_RESULT_SUCCESS; 35 } 36 37 SL_LEAVE_INTERFACE 38 } 39 40 41 static SLresult IPitch_GetPitch(SLPitchItf self, SLpermille *pPitch) 42 { 43 SL_ENTER_INTERFACE 44 45 if (NULL == pPitch) { 46 result = SL_RESULT_PARAMETER_INVALID; 47 } else { 48 IPitch *thiz = (IPitch *) self; 49 interface_lock_peek(thiz); 50 SLpermille pitch = thiz->mPitch; 51 interface_unlock_peek(thiz); 52 *pPitch = pitch; 53 result = SL_RESULT_SUCCESS; 54 } 55 56 SL_LEAVE_INTERFACE 57 } 58 59 60 static SLresult IPitch_GetPitchCapabilities(SLPitchItf self, 61 SLpermille *pMinPitch, SLpermille *pMaxPitch) 62 { 63 SL_ENTER_INTERFACE 64 65 // per spec, each is optional, and does not require that at least one must be non-NULL 66 #if 0 67 if (NULL == pMinPitch && NULL == pMaxPitch) 68 result = SL_RESULT_PARAMETER_INVALID; 69 #endif 70 IPitch *thiz = (IPitch *) self; 71 // const, so no lock needed 72 SLpermille minPitch = thiz->mMinPitch; 73 SLpermille maxPitch = thiz->mMaxPitch; 74 if (NULL != pMinPitch) 75 *pMinPitch = minPitch; 76 if (NULL != pMaxPitch) 77 *pMaxPitch = maxPitch; 78 result = SL_RESULT_SUCCESS; 79 80 SL_LEAVE_INTERFACE 81 } 82 83 84 static const struct SLPitchItf_ IPitch_Itf = { 85 IPitch_SetPitch, 86 IPitch_GetPitch, 87 IPitch_GetPitchCapabilities 88 }; 89 90 void IPitch_init(void *self) 91 { 92 IPitch *thiz = (IPitch *) self; 93 thiz->mItf = &IPitch_Itf; 94 thiz->mPitch = 1000; 95 // const 96 thiz->mMinPitch = -500; 97 thiz->mMaxPitch = 2000; 98 } 99
