1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* This file defines an NDK API.
* Do not remove methods.
* Do not change method signatures.
* Do not change the value of constants.
* Do not change the size of any of the classes defined in here.
* Do not reference types that are not part of the NDK.
* Do not #include files that aren't part of the NDK.
*/
#ifndef _NDK_MEDIA_CODEC_H
#define _NDK_MEDIA_CODEC_H
#include <android/native_window.h>
#include "NdkMediaCrypto.h"
#include "NdkMediaError.h"
#include "NdkMediaFormat.h"
#ifdef __cplusplus
extern "C" {
#endif
struct AMediaCodec;
typedef struct AMediaCodec AMediaCodec;
struct AMediaCodecBufferInfo {
int32_t offset;
int32_t size;
int64_t presentationTimeUs;
uint32_t flags;
};
typedef struct AMediaCodecBufferInfo AMediaCodecBufferInfo;
typedef struct AMediaCodecCryptoInfo AMediaCodecCryptoInfo;
enum {
AMEDIACODEC_BUFFER_FLAG_END_OF_STREAM = 4,
AMEDIACODEC_CONFIGURE_FLAG_ENCODE = 1,
AMEDIACODEC_INFO_OUTPUT_BUFFERS_CHANGED = -3,
AMEDIACODEC_INFO_OUTPUT_FORMAT_CHANGED = -2,
AMEDIACODEC_INFO_TRY_AGAIN_LATER = -1
};
/**
* Create codec by name. Use this if you know the exact codec you want to use.
* When configuring, you will need to specify whether to use the codec as an
* encoder or decoder.
*/
AMediaCodec* AMediaCodec_createCodecByName(const char *name);
/**
* Create codec by mime type. Most applications will use this, specifying a
* mime type obtained from media extractor.
*/
AMediaCodec* AMediaCodec_createDecoderByType(const char *mime_type);
/**
* Create encoder by name.
*/
AMediaCodec* AMediaCodec_createEncoderByType(const char *mime_type);
/**
* delete the codec and free its resources
*/
media_status_t AMediaCodec_delete(AMediaCodec*);
/**
* Configure the codec. For decoding you would typically get the format from an extractor.
*/
media_status_t AMediaCodec_configure(
AMediaCodec*,
const AMediaFormat* format,
ANativeWindow* surface,
AMediaCrypto *crypto,
uint32_t flags);
/**
* Start the codec. A codec must be configured before it can be started, and must be started
* before buffers can be sent to it.
*/
media_status_t AMediaCodec_start(AMediaCodec*);
/**
* Stop the codec.
*/
media_status_t AMediaCodec_stop(AMediaCodec*);
/*
* Flush the codec's input and output. All indices previously returned from calls to
* AMediaCodec_dequeueInputBuffer and AMediaCodec_dequeueOutputBuffer become invalid.
*/
media_status_t AMediaCodec_flush(AMediaCodec*);
/**
* Get an input buffer. The specified buffer index must have been previously obtained from
* dequeueInputBuffer, and not yet queued.
*/
uint8_t* AMediaCodec_getInputBuffer(AMediaCodec*, size_t idx, size_t *out_size);
/**
* Get an output buffer. The specified buffer index must have been previously obtained from
* dequeueOutputBuffer, and not yet queued.
*/
uint8_t* AMediaCodec_getOutputBuffer(AMediaCodec*, size_t idx, size_t *out_size);
/**
* Get the index of the next available input buffer. An app will typically use this with
* getInputBuffer() to get a pointer to the buffer, then copy the data to be encoded or decoded
* into the buffer before passing it to the codec.
*/
ssize_t AMediaCodec_dequeueInputBuffer(AMediaCodec*, int64_t timeoutUs);
/**
* Send the specified buffer to the codec for processing.
*/
media_status_t AMediaCodec_queueInputBuffer(AMediaCodec*,
size_t idx, off_t offset, size_t size, uint64_t time, uint32_t flags);
/**
* Send the specified buffer to the codec for processing.
*/
media_status_t AMediaCodec_queueSecureInputBuffer(AMediaCodec*,
size_t idx, off_t offset, AMediaCodecCryptoInfo*, uint64_t time, uint32_t flags);
/**
* Get the index of the next available buffer of processed data.
*/
ssize_t AMediaCodec_dequeueOutputBuffer(AMediaCodec*, AMediaCodecBufferInfo *info,
int64_t timeoutUs);
AMediaFormat* AMediaCodec_getOutputFormat(AMediaCodec*);
/**
* If you are done with a buffer, use this call to return the buffer to
* the codec. If you previously specified a surface when configuring this
* video decoder you can optionally render the buffer.
*/
media_status_t AMediaCodec_releaseOutputBuffer(AMediaCodec*, size_t idx, bool render);
/**
* If you are done with a buffer, use this call to update its surface timestamp
* and return it to the codec to render it on the output surface. If you
* have not specified an output surface when configuring this video codec,
* this call will simply return the buffer to the codec.
*
* For more details, see the Java documentation for MediaCodec.releaseOutputBuffer.
*/
media_status_t AMediaCodec_releaseOutputBufferAtTime(
AMediaCodec *mData, size_t idx, int64_t timestampNs);
typedef enum {
AMEDIACODECRYPTOINFO_MODE_CLEAR = 0,
AMEDIACODECRYPTOINFO_MODE_AES_CTR = 1
} cryptoinfo_mode_t;
/**
* Create an AMediaCodecCryptoInfo from scratch. Use this if you need to use custom
* crypto info, rather than one obtained from AMediaExtractor.
*
* AMediaCodecCryptoInfo describes the structure of an (at least
* partially) encrypted input sample.
* A buffer's data is considered to be partitioned into "subsamples",
* each subsample starts with a (potentially empty) run of plain,
* unencrypted bytes followed by a (also potentially empty) run of
* encrypted bytes.
* numBytesOfClearData can be null to indicate that all data is encrypted.
* This information encapsulates per-sample metadata as outlined in
* ISO/IEC FDIS 23001-7:2011 "Common encryption in ISO base media file format files".
*/
AMediaCodecCryptoInfo *AMediaCodecCryptoInfo_new(
int numsubsamples,
uint8_t key[16],
uint8_t iv[16],
cryptoinfo_mode_t mode,
size_t *clearbytes,
size_t *encryptedbytes);
/**
* delete an AMediaCodecCryptoInfo created previously with AMediaCodecCryptoInfo_new, or
* obtained from AMediaExtractor
*/
media_status_t AMediaCodecCryptoInfo_delete(AMediaCodecCryptoInfo*);
/**
* The number of subsamples that make up the buffer's contents.
*/
size_t AMediaCodecCryptoInfo_getNumSubSamples(AMediaCodecCryptoInfo*);
/**
* A 16-byte opaque key
*/
media_status_t AMediaCodecCryptoInfo_getKey(AMediaCodecCryptoInfo*, uint8_t *dst);
/**
* A 16-byte initialization vector
*/
media_status_t AMediaCodecCryptoInfo_getIV(AMediaCodecCryptoInfo*, uint8_t *dst);
/**
* The type of encryption that has been applied,
* one of AMEDIACODECRYPTOINFO_MODE_CLEAR or AMEDIACODECRYPTOINFO_MODE_AES_CTR.
*/
cryptoinfo_mode_t AMediaCodecCryptoInfo_getMode(AMediaCodecCryptoInfo*);
/**
* The number of leading unencrypted bytes in each subsample.
*/
media_status_t AMediaCodecCryptoInfo_getClearBytes(AMediaCodecCryptoInfo*, size_t *dst);
/**
* The number of trailing encrypted bytes in each subsample.
*/
media_status_t AMediaCodecCryptoInfo_getEncryptedBytes(AMediaCodecCryptoInfo*, size_t *dst);
#ifdef __cplusplus
} // extern "C"
#endif
#endif //_NDK_MEDIA_CODEC_H
|
