OMXCodec.h revision 1beb760d920561679862ded945a04e370368c7f7 
1/*
2 * Copyright (C) 2009 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#ifndef OMX_CODEC_H_
18
19#define OMX_CODEC_H_
20
21#include <media/IOMX.h>
22#include <media/stagefright/MediaBuffer.h>
23#include <media/stagefright/MediaSource.h>
24#include <utils/threads.h>
25
26namespace android {
27
28class MemoryDealer;
29struct OMXCodecObserver;
30
31struct OMXCodec : public MediaSource,
32                  public MediaBufferObserver {
33    static sp<OMXCodec> Create(
34            const sp<IOMX> &omx,
35            const sp<MetaData> &meta, bool createEncoder,
36            const sp<MediaSource> &source);
37
38    virtual status_t start(MetaData *params = NULL);
39    virtual status_t stop();
40
41    virtual sp<MetaData> getFormat();
42
43    virtual status_t read(
44            MediaBuffer **buffer, const ReadOptions *options = NULL);
45
46    void on_message(const omx_message &msg);
47
48    // from MediaBufferObserver
49    virtual void signalBufferReturned(MediaBuffer *buffer);
50
51protected:
52    virtual ~OMXCodec();
53
54private:
55    enum State {
56        DEAD,
57        LOADED,
58        LOADED_TO_IDLE,
59        IDLE_TO_EXECUTING,
60        EXECUTING,
61        EXECUTING_TO_IDLE,
62        IDLE_TO_LOADED,
63        RECONFIGURING,
64        ERROR
65    };
66
67    enum {
68        kPortIndexInput  = 0,
69        kPortIndexOutput = 1
70    };
71
72    enum PortStatus {
73        ENABLED,
74        DISABLING,
75        DISABLED,
76        ENABLING,
77        SHUTTING_DOWN,
78    };
79
80    enum Quirks {
81        kNeedsFlushBeforeDisable             = 1,
82        kWantsNALFragments                   = 2,
83        kRequiresLoadedToIdleAfterAllocation = 4,
84        kRequiresAllocateBufferOnInputPorts  = 8,
85        kRequiresFlushCompleteEmulation      = 16,
86    };
87
88    struct BufferInfo {
89        IOMX::buffer_id mBuffer;
90        bool mOwnedByComponent;
91        sp<IMemory> mMem;
92        MediaBuffer *mMediaBuffer;
93    };
94
95    struct CodecSpecificData {
96        size_t mSize;
97        uint8_t mData[1];
98    };
99
100    sp<IOMX> mOMX;
101    IOMX::node_id mNode;
102    sp<OMXCodecObserver> mObserver;
103    uint32_t mQuirks;
104    bool mIsEncoder;
105    char *mMIME;
106    char *mComponentName;
107    sp<MetaData> mOutputFormat;
108    sp<MediaSource> mSource;
109    Vector<CodecSpecificData *> mCodecSpecificData;
110    size_t mCodecSpecificDataIndex;
111
112    sp<MemoryDealer> mDealer[2];
113
114    State mState;
115    Vector<BufferInfo> mPortBuffers[2];
116    PortStatus mPortStatus[2];
117    bool mSignalledEOS;
118    bool mNoMoreOutputData;
119    int64_t mSeekTimeUs;
120
121    Mutex mLock;
122    Condition mAsyncCompletion;
123
124    // A list of indices into mPortStatus[kPortIndexOutput] filled with data.
125    List<size_t> mFilledBuffers;
126    Condition mBufferFilled;
127
128    OMXCodec(const sp<IOMX> &omx, IOMX::node_id node, uint32_t quirks,
129             bool isEncoder, const char *mime, const char *componentName,
130             const sp<MediaSource> &source);
131
132    void addCodecSpecificData(const void *data, size_t size);
133    void clearCodecSpecificData();
134
135    void setAMRFormat();
136    void setAACFormat();
137
138    status_t setVideoPortFormatType(
139            OMX_U32 portIndex,
140            OMX_VIDEO_CODINGTYPE compressionFormat,
141            OMX_COLOR_FORMATTYPE colorFormat);
142
143    void setVideoInputFormat(
144            const char *mime, OMX_U32 width, OMX_U32 height);
145
146    void setVideoOutputFormat(
147            const char *mime, OMX_U32 width, OMX_U32 height);
148
149    void setImageOutputFormat(
150            OMX_COLOR_FORMATTYPE format, OMX_U32 width, OMX_U32 height);
151
152    void setJPEGInputFormat(
153            OMX_U32 width, OMX_U32 height, OMX_U32 compressedSize);
154
155    status_t allocateBuffers();
156    status_t allocateBuffersOnPort(OMX_U32 portIndex);
157
158    status_t freeBuffersOnPort(
159            OMX_U32 portIndex, bool onlyThoseWeOwn = false);
160
161    void drainInputBuffer(IOMX::buffer_id buffer);
162    void fillOutputBuffer(IOMX::buffer_id buffer);
163    void drainInputBuffer(BufferInfo *info);
164    void fillOutputBuffer(BufferInfo *info);
165
166    void drainInputBuffers();
167    void fillOutputBuffers();
168
169    // Returns true iff a flush was initiated and a completion event is
170    // upcoming, false otherwise (A flush was not necessary as we own all
171    // the buffers on that port).
172    // This method will ONLY ever return false for a component with quirk
173    // "kRequiresFlushCompleteEmulation".
174    bool flushPortAsync(OMX_U32 portIndex);
175
176    void disablePortAsync(OMX_U32 portIndex);
177    void enablePortAsync(OMX_U32 portIndex);
178
179    static size_t countBuffersWeOwn(const Vector<BufferInfo> &buffers);
180    static bool isIntermediateState(State state);
181
182    void onEvent(OMX_EVENTTYPE event, OMX_U32 data1, OMX_U32 data2);
183    void onCmdComplete(OMX_COMMANDTYPE cmd, OMX_U32 data);
184    void onStateChange(OMX_STATETYPE newState);
185    void onPortSettingsChanged(OMX_U32 portIndex);
186
187    void setState(State newState);
188
189    status_t init();
190    void initOutputFormat(const sp<MetaData> &inputFormat);
191
192    void dumpPortStatus(OMX_U32 portIndex);
193
194    OMXCodec(const OMXCodec &);
195    OMXCodec &operator=(const OMXCodec &);
196};
197
198}  // namespace android
199
200#endif  // OMX_CODEC_H_
201