OMXCodec.h revision 7757f5010a771fb8824b6fdf9788f588a1577e3f 
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 <android/native_window.h>
22#include <media/IOMX.h>
23#include <media/stagefright/MediaBuffer.h>
24#include <media/stagefright/MediaSource.h>
25#include <utils/threads.h>
26
27namespace android {
28
29class MemoryDealer;
30struct OMXCodecObserver;
31struct CodecProfileLevel;
32
33struct OMXCodec : public MediaSource,
34                  public MediaBufferObserver {
35    enum CreationFlags {
36        kPreferSoftwareCodecs    = 1,
37        kIgnoreCodecSpecificData = 2,
38
39        // The client wants to access the output buffer's video
40        // data for example for thumbnail extraction.
41        kClientNeedsFramebuffer  = 4,
42
43        // Request for software or hardware codecs. If request
44        // can not be fullfilled, Create() returns NULL.
45        kSoftwareCodecsOnly      = 8,
46        kHardwareCodecsOnly      = 16,
47
48        // Store meta data in video buffers
49        kStoreMetaDataInVideoBuffers = 32,
50
51        // Only submit one input buffer at one time.
52        kOnlySubmitOneInputBufferAtOneTime = 64,
53    };
54    static sp<MediaSource> Create(
55            const sp<IOMX> &omx,
56            const sp<MetaData> &meta, bool createEncoder,
57            const sp<MediaSource> &source,
58            const char *matchComponentName = NULL,
59            uint32_t flags = 0,
60            const sp<ANativeWindow> &nativeWindow = NULL);
61
62    static void setComponentRole(
63            const sp<IOMX> &omx, IOMX::node_id node, bool isEncoder,
64            const char *mime);
65
66    virtual status_t start(MetaData *params = NULL);
67    virtual status_t stop();
68
69    virtual sp<MetaData> getFormat();
70
71    virtual status_t read(
72            MediaBuffer **buffer, const ReadOptions *options = NULL);
73
74    virtual status_t pause();
75
76    // from MediaBufferObserver
77    virtual void signalBufferReturned(MediaBuffer *buffer);
78
79protected:
80    virtual ~OMXCodec();
81
82private:
83
84    // Make sure mLock is accessible to OMXCodecObserver
85    friend class OMXCodecObserver;
86
87    // Call this with mLock hold
88    void on_message(const omx_message &msg);
89
90    enum State {
91        DEAD,
92        LOADED,
93        LOADED_TO_IDLE,
94        IDLE_TO_EXECUTING,
95        EXECUTING,
96        EXECUTING_TO_IDLE,
97        IDLE_TO_LOADED,
98        RECONFIGURING,
99        ERROR
100    };
101
102    enum {
103        kPortIndexInput  = 0,
104        kPortIndexOutput = 1
105    };
106
107    enum PortStatus {
108        ENABLED,
109        DISABLING,
110        DISABLED,
111        ENABLING,
112        SHUTTING_DOWN,
113    };
114
115    enum Quirks {
116        kNeedsFlushBeforeDisable              = 1,
117        kWantsNALFragments                    = 2,
118        kRequiresLoadedToIdleAfterAllocation  = 4,
119        kRequiresAllocateBufferOnInputPorts   = 8,
120        kRequiresFlushCompleteEmulation       = 16,
121        kRequiresAllocateBufferOnOutputPorts  = 32,
122        kRequiresFlushBeforeShutdown          = 64,
123        kDefersOutputBufferAllocation         = 128,
124        kDecoderLiesAboutNumberOfChannels     = 256,
125        kInputBufferSizesAreBogus             = 512,
126        kSupportsMultipleFramesPerInputBuffer = 1024,
127        kAvoidMemcopyInputRecordingFrames     = 2048,
128        kRequiresLargerEncoderOutputBuffer    = 4096,
129        kOutputBuffersAreUnreadable           = 8192,
130    };
131
132    enum BufferStatus {
133        OWNED_BY_US,
134        OWNED_BY_COMPONENT,
135        OWNED_BY_NATIVE_WINDOW,
136        OWNED_BY_CLIENT,
137    };
138
139    struct BufferInfo {
140        IOMX::buffer_id mBuffer;
141        BufferStatus mStatus;
142        sp<IMemory> mMem;
143        size_t mSize;
144        void *mData;
145        MediaBuffer *mMediaBuffer;
146    };
147
148    struct CodecSpecificData {
149        size_t mSize;
150        uint8_t mData[1];
151    };
152
153    sp<IOMX> mOMX;
154    bool mOMXLivesLocally;
155    IOMX::node_id mNode;
156    uint32_t mQuirks;
157    bool mIsEncoder;
158    char *mMIME;
159    char *mComponentName;
160    sp<MetaData> mOutputFormat;
161    sp<MediaSource> mSource;
162    Vector<CodecSpecificData *> mCodecSpecificData;
163    size_t mCodecSpecificDataIndex;
164
165    sp<MemoryDealer> mDealer[2];
166
167    State mState;
168    Vector<BufferInfo> mPortBuffers[2];
169    PortStatus mPortStatus[2];
170    bool mInitialBufferSubmit;
171    bool mSignalledEOS;
172    status_t mFinalStatus;
173    bool mNoMoreOutputData;
174    bool mOutputPortSettingsHaveChanged;
175    int64_t mSeekTimeUs;
176    ReadOptions::SeekMode mSeekMode;
177    int64_t mTargetTimeUs;
178
179    MediaBuffer *mLeftOverBuffer;
180
181    Mutex mLock;
182    Condition mAsyncCompletion;
183
184    bool mPaused;
185
186    sp<ANativeWindow> mNativeWindow;
187
188    // The index in each of the mPortBuffers arrays of the buffer that will be
189    // submitted to OMX next.  This only applies when using buffers from a
190    // native window.
191    size_t mNextNativeBufferIndex[2];
192
193    // A list of indices into mPortStatus[kPortIndexOutput] filled with data.
194    List<size_t> mFilledBuffers;
195    Condition mBufferFilled;
196
197    bool mIsMetaDataStoredInVideoBuffers;
198    bool mOnlySubmitOneBufferAtOneTime;
199
200    OMXCodec(const sp<IOMX> &omx, IOMX::node_id node, uint32_t quirks,
201             bool isEncoder, const char *mime, const char *componentName,
202             const sp<MediaSource> &source,
203             const sp<ANativeWindow> &nativeWindow);
204
205    void addCodecSpecificData(const void *data, size_t size);
206    void clearCodecSpecificData();
207
208    void setComponentRole();
209
210    void setAMRFormat(bool isWAMR, int32_t bitRate);
211    void setAACFormat(int32_t numChannels, int32_t sampleRate, int32_t bitRate);
212
213    status_t setVideoPortFormatType(
214            OMX_U32 portIndex,
215            OMX_VIDEO_CODINGTYPE compressionFormat,
216            OMX_COLOR_FORMATTYPE colorFormat);
217
218    void setVideoInputFormat(
219            const char *mime, const sp<MetaData>& meta);
220
221    status_t setupBitRate(int32_t bitRate);
222    status_t setupErrorCorrectionParameters();
223    status_t setupH263EncoderParameters(const sp<MetaData>& meta);
224    status_t setupMPEG4EncoderParameters(const sp<MetaData>& meta);
225    status_t setupAVCEncoderParameters(const sp<MetaData>& meta);
226    status_t findTargetColorFormat(
227            const sp<MetaData>& meta, OMX_COLOR_FORMATTYPE *colorFormat);
228
229    status_t isColorFormatSupported(
230            OMX_COLOR_FORMATTYPE colorFormat, int portIndex);
231
232    // If profile/level is set in the meta data, its value in the meta
233    // data will be used; otherwise, the default value will be used.
234    status_t getVideoProfileLevel(const sp<MetaData>& meta,
235            const CodecProfileLevel& defaultProfileLevel,
236            CodecProfileLevel& profileLevel);
237
238    status_t setVideoOutputFormat(
239            const char *mime, OMX_U32 width, OMX_U32 height);
240
241    void setImageOutputFormat(
242            OMX_COLOR_FORMATTYPE format, OMX_U32 width, OMX_U32 height);
243
244    void setJPEGInputFormat(
245            OMX_U32 width, OMX_U32 height, OMX_U32 compressedSize);
246
247    void setMinBufferSize(OMX_U32 portIndex, OMX_U32 size);
248
249    void setRawAudioFormat(
250            OMX_U32 portIndex, int32_t sampleRate, int32_t numChannels);
251
252    status_t allocateBuffers();
253    status_t allocateBuffersOnPort(OMX_U32 portIndex);
254    status_t allocateOutputBuffersFromNativeWindow();
255
256    status_t queueBufferToNativeWindow(BufferInfo *info);
257    status_t cancelBufferToNativeWindow(BufferInfo *info);
258    BufferInfo* dequeueBufferFromNativeWindow();
259
260    status_t freeBuffersOnPort(
261            OMX_U32 portIndex, bool onlyThoseWeOwn = false);
262
263    status_t freeBuffer(OMX_U32 portIndex, size_t bufIndex);
264
265    bool drainInputBuffer(IOMX::buffer_id buffer);
266    void fillOutputBuffer(IOMX::buffer_id buffer);
267    bool drainInputBuffer(BufferInfo *info);
268    void fillOutputBuffer(BufferInfo *info);
269
270    void drainInputBuffers();
271    void fillOutputBuffers();
272
273    // Returns true iff a flush was initiated and a completion event is
274    // upcoming, false otherwise (A flush was not necessary as we own all
275    // the buffers on that port).
276    // This method will ONLY ever return false for a component with quirk
277    // "kRequiresFlushCompleteEmulation".
278    bool flushPortAsync(OMX_U32 portIndex);
279
280    void disablePortAsync(OMX_U32 portIndex);
281    void enablePortAsync(OMX_U32 portIndex);
282
283    static size_t countBuffersWeOwn(const Vector<BufferInfo> &buffers);
284    static bool isIntermediateState(State state);
285
286    void onEvent(OMX_EVENTTYPE event, OMX_U32 data1, OMX_U32 data2);
287    void onCmdComplete(OMX_COMMANDTYPE cmd, OMX_U32 data);
288    void onStateChange(OMX_STATETYPE newState);
289    void onPortSettingsChanged(OMX_U32 portIndex);
290
291    void setState(State newState);
292
293    status_t init();
294    void initOutputFormat(const sp<MetaData> &inputFormat);
295    status_t initNativeWindow();
296
297    void dumpPortStatus(OMX_U32 portIndex);
298
299    status_t configureCodec(const sp<MetaData> &meta, uint32_t flags);
300
301    static uint32_t getComponentQuirks(
302            const char *componentName, bool isEncoder);
303
304    static void findMatchingCodecs(
305            const char *mime,
306            bool createEncoder, const char *matchComponentName,
307            uint32_t flags,
308            Vector<String8> *matchingCodecs);
309
310    void restorePatchedDataPointer(BufferInfo *info);
311
312    status_t applyRotation();
313
314    OMXCodec(const OMXCodec &);
315    OMXCodec &operator=(const OMXCodec &);
316};
317
318struct CodecProfileLevel {
319    OMX_U32 mProfile;
320    OMX_U32 mLevel;
321};
322
323struct CodecCapabilities {
324    String8 mComponentName;
325    Vector<CodecProfileLevel> mProfileLevels;
326    Vector<OMX_U32> mColorFormats;
327};
328
329// Return a vector of componentNames with supported profile/level pairs
330// supporting the given mime type, if queryDecoders==true, returns components
331// that decode content of the given type, otherwise returns components
332// that encode content of the given type.
333// profile and level indications only make sense for h.263, mpeg4 and avc
334// video.
335// The profile/level values correspond to
336// OMX_VIDEO_H263PROFILETYPE, OMX_VIDEO_MPEG4PROFILETYPE,
337// OMX_VIDEO_AVCPROFILETYPE, OMX_VIDEO_H263LEVELTYPE, OMX_VIDEO_MPEG4LEVELTYPE
338// and OMX_VIDEO_AVCLEVELTYPE respectively.
339
340status_t QueryCodecs(
341        const sp<IOMX> &omx,
342        const char *mimeType, bool queryDecoders,
343        Vector<CodecCapabilities> *results);
344
345}  // namespace android
346
347#endif  // OMX_CODEC_H_
348