1 /* 2 * Copyright (C) 2011 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 ************************************************************************* 18 * @file M4MCS_API.c 19 * @brief MCS implementation (Video Compressor Service) 20 * @note This file implements the API and the processing of the MCS 21 ************************************************************************* 22 **/ 23 24 /****************/ 25 /*** Includes ***/ 26 /****************/ 27 28 /** 29 * OSAL headers */ 30 #include "M4OSA_Memory.h" /**< OSAL memory management */ 31 #include "M4OSA_Debug.h" /**< OSAL debug management */ 32 33 /* Our headers */ 34 #include "M4MCS_API.h" 35 #include "M4MCS_ErrorCodes.h" 36 #include "M4MCS_InternalTypes.h" 37 #include "M4MCS_InternalConfig.h" 38 #include "M4MCS_InternalFunctions.h" 39 40 /* Common headers (for aac) */ 41 #include "M4_Common.h" 42 43 #ifdef M4VSS_ENABLE_EXTERNAL_DECODERS 44 #include "M4VD_EXTERNAL_Interface.h" 45 #endif /* M4VSS_ENABLE_EXTERNAL_DECODERS */ 46 47 48 49 /** 50 ****************************************************************************** 51 * M4OSA_ERR M4MCS_intCheckAudioEffects(M4MCS_InternalContext* pContext) 52 * @brief Check if an effect has to be applied currently 53 * @note It is called by the stepEncoding function 54 * @param pContext (IN) MCS internal context 55 * @return M4NO_ERROR: No error 56 ****************************************************************************** 57 */ 58 M4OSA_ERR M4MCS_intCheckAudioEffects(M4MCS_InternalContext* pC) 59 { 60 M4OSA_Int8 *pActiveEffectNumber = &(pC->pActiveEffectNumber); 61 62 *pActiveEffectNumber = -1; 63 64 if(pC->ReaderAudioAU.m_CTS > pC->uiBeginCutTime 65 && pC->ReaderAudioAU.m_CTS < pC->uiEndCutTime) 66 { 67 M4OSA_UInt32 outputRelatedTime = 0; 68 M4OSA_UInt8 uiEffectIndex = 0; 69 outputRelatedTime = 70 (M4OSA_UInt32)(pC->ReaderAudioAU.m_CTS - pC->uiBeginCutTime + 0.5); 71 72 for(uiEffectIndex=0; uiEffectIndex<pC->nbEffects; uiEffectIndex++) 73 { 74 if ((outputRelatedTime >= 75 (M4OSA_UInt32)(pC->pEffects[uiEffectIndex].uiStartTime)) && 76 (outputRelatedTime < 77 (M4OSA_UInt32)(pC->pEffects[uiEffectIndex].uiStartTime +\ 78 pC->pEffects[uiEffectIndex].uiDuration))) 79 { 80 *pActiveEffectNumber = uiEffectIndex; 81 uiEffectIndex = pC->nbEffects; 82 } 83 } 84 } 85 86 return M4NO_ERROR; 87 } 88 89 90 /** 91 ****************************************************************************** 92 * M4OSA_ERR M4MCS_editAudioEffectFct_FadeIn() 93 * @brief Apply audio effect FadeIn to pPCMdata 94 * @param pC (IN/OUT) Internal edit context 95 * @param pPCMdata (IN/OUT) Input and Output PCM audio data 96 * @param uiPCMsize (IN) Size of pPCMdata 97 * @param pProgress (IN) Effect progress 98 * @return M4NO_ERROR: No error 99 ****************************************************************************** 100 */ 101 M4OSA_ERR M4MCS_editAudioEffectFct_FadeIn( M4OSA_Void *pFunctionContext, 102 M4OSA_Int16 *pPCMdata, 103 M4OSA_UInt32 uiPCMsize, 104 M4MCS_ExternalProgress *pProgress) 105 { 106 /* we will cast each Int16 sample into this Int32 variable */ 107 M4OSA_Int32 i32sample; 108 109 /** 110 * Sanity check */ 111 if(pProgress->uiProgress > 1000) 112 { 113 pProgress->uiProgress = 1000; 114 } 115 116 /** 117 * From buffer size (bytes) to number of sample (int16): divide by two */ 118 uiPCMsize >>= 1; 119 120 /** 121 * Loop on samples */ 122 while (uiPCMsize-->0) /**< decrementing to optimize */ 123 { 124 i32sample = *pPCMdata; 125 i32sample *= pProgress->uiProgress; 126 i32sample /= 1000; 127 *pPCMdata++ = (M4OSA_Int16)i32sample; 128 } 129 130 /** 131 * Return */ 132 M4OSA_TRACE3_0("M4MCS_editAudioEffectFct_FadeIn: returning M4NO_ERROR"); 133 return M4NO_ERROR; 134 } 135 136 137 /** 138 ****************************************************************************** 139 * M4OSA_ERR M4MCS_editAudioEffectFct_FadeOut() 140 * @brief Apply audio effect FadeIn to pPCMdata 141 * @param pC (IN/OUT) Internal edit context 142 * @param pPCMdata (IN/OUT) Input and Output PCM audio data 143 * @param uiPCMsize (IN) Size of pPCMdata 144 * @param pProgress (IN) Effect progress 145 * @return M4NO_ERROR: No error 146 ****************************************************************************** 147 */ 148 M4OSA_ERR M4MCS_editAudioEffectFct_FadeOut( M4OSA_Void *pFunctionContext, 149 M4OSA_Int16 *pPCMdata, 150 M4OSA_UInt32 uiPCMsize, 151 M4MCS_ExternalProgress *pProgress) 152 { 153 /* we will cast each Int16 sample into this Int32 variable */ 154 M4OSA_Int32 i32sample; 155 156 /** 157 * Sanity check */ 158 if(pProgress->uiProgress > 1000) 159 { 160 pProgress->uiProgress = 1000; 161 } 162 pProgress->uiProgress = 1000 - pProgress->uiProgress; 163 164 /** 165 * From buffer size (bytes) to number of sample (int16): divide by two */ 166 uiPCMsize >>= 1; 167 168 /** 169 * Loop on samples */ 170 while (uiPCMsize-->0) /**< decrementing to optimize */ 171 { 172 i32sample = *pPCMdata; 173 i32sample *= pProgress->uiProgress; 174 i32sample /= 1000; 175 *pPCMdata++ = (M4OSA_Int16)i32sample; 176 } 177 178 /** 179 * Return */ 180 M4OSA_TRACE3_0("M4MCS_editAudioEffectFct_FadeOut: returning M4NO_ERROR"); 181 return M4NO_ERROR; 182 } 183 184
