1/*
2 * Copyright (C) 2013 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#include <hardware/audio.h>
18#include <hardware/audio_effect.h>
19#include "EffectsFactory.h"
20
21namespace android {
22enum {
23    SUB_FX_HOST,       // Index of HOST in the descriptor and handle arrays
24                       // of the Proxy context
25    SUB_FX_OFFLOAD,    // Index of OFFLOAD in the descriptor and handle arrays
26                       // of the Proxy context
27    SUB_FX_COUNT       // The number of sub effects for a Proxy(1 HW, 1 SW)
28};
29#if __cplusplus
30extern "C" {
31#endif
32
33int EffectProxyCreate(const effect_uuid_t *uuid,
34                          int32_t             sessionId,
35                          int32_t             ioId,
36                          effect_handle_t  *pHandle);
37int EffectProxyRelease(effect_handle_t handle);
38int EffectProxyGetDescriptor(const effect_uuid_t *uuid,
39                                 effect_descriptor_t *pDescriptor);
40/* Effect Control Interface Implementation: Process */
41int Effect_process(effect_handle_t     self,
42                            audio_buffer_t         *inBuffer,
43                            audio_buffer_t         *outBuffer);
44
45/* Effect Control Interface Implementation: Command */
46int Effect_command(effect_handle_t  self,
47                            uint32_t            cmdCode,
48                            uint32_t            cmdSize,
49                            void                *pCmdData,
50                            uint32_t            *replySize,
51                            void                *pReplyData);
52int Effect_getDescriptor(effect_handle_t   self,
53                       effect_descriptor_t *pDescriptor);
54
55const struct effect_interface_s gEffectInterface = {
56  Effect_process,
57  Effect_command,
58  Effect_getDescriptor,
59  NULL,
60};
61
62#define PROXY_REPLY_SIZE_MAX     (64 * 1024) // must be power of two
63#define PROXY_REPLY_SIZE_DEFAULT 32          // must be power of two
64
65struct EffectContext {
66  const struct effect_interface_s  *common_itfe; // Holds the itfe of the Proxy
67  sub_effect_entry_t** sube;                     // Points to the sub effects
68  effect_descriptor_t*  desc;                    // Points to the sub effect descriptors
69  audio_effect_library_t**  aeli;                // Points to the sub effect aeli
70  effect_handle_t       eHandle[SUB_FX_COUNT];   // The effect handles of the sub effects
71  int                   index;       // The index that is currently active - HOST or OFFLOAD
72  int32_t               sessionId;   // The sessiond in which the effect is created.
73                                     // Stored in context to pass on to sub effect creation
74  int32_t               ioId;        // The ioId in which the effect is created.
75                                     // Stored in context to pass on to sub effect creation
76  effect_uuid_t         uuid;        // UUID of the Proxy
77  char*                 replyData;   // temporary buffer for non active sub effect command reply
78  uint32_t              replySize;   // current size of temporary reply buffer
79};
80
81#if __cplusplus
82}  // extern "C"
83#endif
84} //namespace android
85