1 /*
2 * Copyright (C) 2004-2010 NXP Software
3 * Copyright (C) 2010 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 /************************************************************************************/
19 /* */
20 /* Includes */
21 /* */
22 /************************************************************************************/
23
24 #include "LVCS.h"
25 #include "LVCS_Private.h"
26 #include "LVCS_Tables.h"
27
28 /************************************************************************************/
29 /* */
30 /* FUNCTION: LVCS_GetParameters */
31 /* */
32 /* DESCRIPTION: */
33 /* Request the Concert Sound parameters. The current parameter set is returned */
34 /* via the parameter pointer. */
35 /* */
36 /* PARAMETERS: */
37 /* hInstance Instance handle */
38 /* pParams Pointer to an empty parameter structure */
39 /* */
40 /* RETURNS: */
41 /* LVCS_Success Always succeeds */
42 /* */
43 /* NOTES: */
44 /* 1. This function may be interrupted by the LVCS_Process function */
45 /* */
46 /************************************************************************************/
47
LVCS_GetParameters(LVCS_Handle_t hInstance,LVCS_Params_t * pParams)48 LVCS_ReturnStatus_en LVCS_GetParameters(LVCS_Handle_t hInstance,
49 LVCS_Params_t *pParams)
50 {
51
52 LVCS_Instance_t *pInstance =(LVCS_Instance_t *)hInstance;
53
54 *pParams = pInstance->Params;
55
56 return(LVCS_SUCCESS);
57 }
58
59
60 /************************************************************************************/
61 /* */
62 /* FUNCTION: LVCS_Control */
63 /* */
64 /* DESCRIPTION: */
65 /* Sets or changes the Concert Sound parameters. */
66 /* */
67 /* PARAMETERS: */
68 /* hInstance Instance handle */
69 /* pParams Pointer to a parameter structure */
70 /* */
71 /* RETURNS: */
72 /* LVCS_Success Succeeded */
73 /* */
74 /* NOTES: */
75 /* 1. This function must not be interrupted by the LVCS_Process function */
76 /* */
77 /************************************************************************************/
78
LVCS_Control(LVCS_Handle_t hInstance,LVCS_Params_t * pParams)79 LVCS_ReturnStatus_en LVCS_Control(LVCS_Handle_t hInstance,
80 LVCS_Params_t *pParams)
81 {
82 LVM_INT16 Offset;
83 LVCS_Instance_t *pInstance =(LVCS_Instance_t *)hInstance;
84 LVCS_ReturnStatus_en err;
85 LVCS_Modes_en OperatingModeSave = pInstance->Params.OperatingMode;
86
87 if (pParams->SampleRate != pInstance->Params.SampleRate)
88 {
89 pInstance->TimerParams.SamplingRate = LVCS_SampleRateTable[pParams->SampleRate];
90 }
91
92 /*
93 * If the reverb level has changed
94 */
95 if(pInstance->Params.ReverbLevel != pParams->ReverbLevel)
96 {
97 err=LVCS_ReverbGeneratorInit(hInstance,pParams);
98 }
99
100 /*
101 * If the sample rate or speaker has changed then perform a full re-initialisation
102 */
103 if ((pInstance->Params.SampleRate != pParams->SampleRate) ||
104 (pInstance->Params.SpeakerType != pParams->SpeakerType))
105 {
106 const LVCS_VolCorrect_t *pLVCS_VolCorrectTable;
107
108 /*
109 * Output device
110 */
111 pInstance->OutputDevice = LVCS_HEADPHONE;
112
113 /*
114 * Get the volume correction parameters
115 */
116 /* Use internal coefficient table */
117 pLVCS_VolCorrectTable = (LVCS_VolCorrect_t*)&LVCS_VolCorrectTable[0];
118 Offset = (LVM_INT16)(pParams->SpeakerType + pParams->SourceFormat*(1+LVCS_EX_HEADPHONES));
119
120 pInstance->VolCorrect = pLVCS_VolCorrectTable[Offset];
121
122 pInstance->CompressGain = pInstance->VolCorrect.CompMin;
123
124 LVC_Mixer_Init(&pInstance->BypassMix.Mixer_Instance.MixerStream[0],0,0);
125
126
127 {
128 LVM_UINT32 Gain;
129 const Gain_t *pOutputGainTable = (Gain_t*)&LVCS_OutputGainTable[0];
130 Gain = (LVM_UINT32)(pOutputGainTable[Offset].Loss * LVM_MAXINT_16);
131 Gain = (LVM_UINT32)pOutputGainTable[Offset].UnprocLoss * (Gain >> 15);
132 Gain=Gain>>15;
133 /*
134 * Apply the gain correction and shift, note the result is in Q3.13 format
135 */
136 Gain = (Gain * pInstance->VolCorrect.GainMin) >>12;
137
138 LVC_Mixer_Init(&pInstance->BypassMix.Mixer_Instance.MixerStream[1],0,Gain);
139 LVC_Mixer_VarSlope_SetTimeConstant(&pInstance->BypassMix.Mixer_Instance.MixerStream[0],
140 LVCS_BYPASS_MIXER_TC,pParams->SampleRate,2);
141 LVC_Mixer_VarSlope_SetTimeConstant(&pInstance->BypassMix.Mixer_Instance.MixerStream[1],
142 LVCS_BYPASS_MIXER_TC,pParams->SampleRate,2);
143
144 }
145
146
147 err=LVCS_SEnhancerInit(hInstance,
148 pParams);
149
150 err=LVCS_ReverbGeneratorInit(hInstance,
151 pParams);
152
153 err=LVCS_EqualiserInit(hInstance,
154 pParams);
155
156 err=LVCS_BypassMixInit(hInstance,
157 pParams);
158
159 }
160
161
162 /*
163 * Check if the effect level or source format has changed
164 */
165 else if ((pInstance->Params.EffectLevel != pParams->EffectLevel) ||
166 (pInstance->Params.SourceFormat != pParams->SourceFormat))
167 {
168 const LVCS_VolCorrect_t *pLVCS_VolCorrectTable;
169
170 /*
171 * Get the volume correction parameters
172 */
173 /* Use internal coefficient table */
174 pLVCS_VolCorrectTable = (LVCS_VolCorrect_t*)&LVCS_VolCorrectTable[0];
175 Offset = (LVM_INT16)(pParams->SpeakerType + pParams->SourceFormat*(1+LVCS_EX_HEADPHONES));
176
177 pInstance->VolCorrect = pLVCS_VolCorrectTable[Offset];
178
179 /* Update the effect level and alpha-mixer gains */
180 err=LVCS_BypassMixInit(hInstance,
181 pParams);
182
183 if(err != LVCS_SUCCESS)
184 {
185 return err;
186 }
187 }
188 else
189 {
190 pInstance->Params = *pParams;
191 }
192
193 /*
194 * Update the instance parameters
195 */
196 pInstance->Params = *pParams;
197
198 /* Stay on the current operating mode until the transition is done */
199 if((pParams->OperatingMode != OperatingModeSave) ||
200 (pInstance->bInOperatingModeTransition == LVM_TRUE)){
201
202 /* Set the reverb delay timeout */
203 if(pInstance->bInOperatingModeTransition != LVM_TRUE){
204 pInstance->bTimerDone = LVM_FALSE;
205 pInstance->TimerParams.TimeInMs =
206 (LVM_INT16)(((pInstance->Reverberation.DelaySize << 2)
207 /pInstance->TimerParams.SamplingRate) + 1);
208 LVM_Timer_Init ( &pInstance->TimerInstance,
209 &pInstance->TimerParams);
210 }
211
212 /* Update the effect level and alpha-mixer gains */
213 err=LVCS_BypassMixInit(hInstance,
214 pParams);
215
216 /* Change transition bypass mixer settings if needed depending on transition type */
217 if(pParams->OperatingMode != LVCS_OFF){
218 pInstance->MSTarget0=LVM_MAXINT_16;
219 pInstance->MSTarget1=0;
220 }
221 else
222 {
223 pInstance->Params.OperatingMode = OperatingModeSave;
224 pInstance->MSTarget1=LVM_MAXINT_16;
225 pInstance->MSTarget0=0;
226 }
227
228
229 /* Set transition flag */
230 pInstance->bInOperatingModeTransition = LVM_TRUE;
231 }
232
233 return(LVCS_SUCCESS);
234 }
235
236 /****************************************************************************************/
237 /* */
238 /* FUNCTION: LVCS_TimerCallBack */
239 /* */
240 /* DESCRIPTION: */
241 /* CallBack function of the Timer. */
242 /* */
243 /****************************************************************************************/
LVCS_TimerCallBack(void * hInstance,void * pCallBackParams,LVM_INT32 CallbackParam)244 void LVCS_TimerCallBack (void* hInstance, void* pCallBackParams, LVM_INT32 CallbackParam)
245 {
246 LVCS_Instance_t *pInstance = (LVCS_Instance_t *)hInstance;
247
248 /* Avoid warnings because pCallBackParams and CallbackParam are not used*/
249 if((pCallBackParams != LVM_NULL) || (CallbackParam != 0)){
250 pCallBackParams = hInstance;
251 CallbackParam = 0;
252 return;
253 }
254
255 pInstance->bTimerDone = LVM_TRUE;
256
257
258 return;
259 }
260
261