OMX.cpp revision 134ee6a324c35f39e3576172e4eae4c6de6eb9dc 
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//#define LOG_NDEBUG 0
18#define LOG_TAG "OMX"
19#include <utils/Log.h>
20
21#include <dlfcn.h>
22
23#include "../include/OMX.h"
24#include "OMXRenderer.h"
25
26#include "../include/OMXNodeInstance.h"
27#include "../include/SoftwareRenderer.h"
28
29#include <binder/IMemory.h>
30#include <media/stagefright/MediaDebug.h>
31#include <media/stagefright/VideoRenderer.h>
32
33#include "OMXMaster.h"
34
35#include <OMX_Component.h>
36
37namespace android {
38
39////////////////////////////////////////////////////////////////////////////////
40
41struct OMX::CallbackDispatcher : public RefBase {
42    CallbackDispatcher(OMX *owner);
43
44    void post(const omx_message &msg);
45
46protected:
47    virtual ~CallbackDispatcher();
48
49private:
50    Mutex mLock;
51
52    OMX *mOwner;
53    bool mDone;
54    Condition mQueueChanged;
55    List<omx_message> mQueue;
56
57    pthread_t mThread;
58
59    void dispatch(const omx_message &msg);
60
61    static void *ThreadWrapper(void *me);
62    void threadEntry();
63
64    CallbackDispatcher(const CallbackDispatcher &);
65    CallbackDispatcher &operator=(const CallbackDispatcher &);
66};
67
68OMX::CallbackDispatcher::CallbackDispatcher(OMX *owner)
69    : mOwner(owner),
70      mDone(false) {
71    pthread_attr_t attr;
72    pthread_attr_init(&attr);
73    pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
74
75    pthread_create(&mThread, &attr, ThreadWrapper, this);
76
77    pthread_attr_destroy(&attr);
78}
79
80OMX::CallbackDispatcher::~CallbackDispatcher() {
81    {
82        Mutex::Autolock autoLock(mLock);
83
84        mDone = true;
85        mQueueChanged.signal();
86    }
87
88    void *dummy;
89    pthread_join(mThread, &dummy);
90}
91
92void OMX::CallbackDispatcher::post(const omx_message &msg) {
93    Mutex::Autolock autoLock(mLock);
94    mQueue.push_back(msg);
95    mQueueChanged.signal();
96}
97
98void OMX::CallbackDispatcher::dispatch(const omx_message &msg) {
99    OMXNodeInstance *instance = mOwner->findInstance(msg.node);
100    if (instance == NULL) {
101        LOGV("Would have dispatched a message to a node that's already gone.");
102        return;
103    }
104    instance->onMessage(msg);
105}
106
107// static
108void *OMX::CallbackDispatcher::ThreadWrapper(void *me) {
109    static_cast<CallbackDispatcher *>(me)->threadEntry();
110
111    return NULL;
112}
113
114void OMX::CallbackDispatcher::threadEntry() {
115    for (;;) {
116        omx_message msg;
117
118        {
119            Mutex::Autolock autoLock(mLock);
120            while (!mDone && mQueue.empty()) {
121                mQueueChanged.wait(mLock);
122            }
123
124            if (mDone) {
125                break;
126            }
127
128            msg = *mQueue.begin();
129            mQueue.erase(mQueue.begin());
130        }
131
132        dispatch(msg);
133    }
134}
135
136////////////////////////////////////////////////////////////////////////////////
137
138class BufferMeta {
139public:
140    BufferMeta(OMX *owner, const sp<IMemory> &mem, bool is_backup = false)
141        : mOwner(owner),
142          mMem(mem),
143          mIsBackup(is_backup) {
144    }
145
146    BufferMeta(OMX *owner, size_t size)
147        : mOwner(owner),
148          mSize(size),
149          mIsBackup(false) {
150    }
151
152    void CopyFromOMX(const OMX_BUFFERHEADERTYPE *header) {
153        if (!mIsBackup) {
154            return;
155        }
156
157        memcpy((OMX_U8 *)mMem->pointer() + header->nOffset,
158               header->pBuffer + header->nOffset,
159               header->nFilledLen);
160    }
161
162    void CopyToOMX(const OMX_BUFFERHEADERTYPE *header) {
163        if (!mIsBackup) {
164            return;
165        }
166
167        memcpy(header->pBuffer + header->nOffset,
168               (const OMX_U8 *)mMem->pointer() + header->nOffset,
169               header->nFilledLen);
170    }
171
172private:
173    OMX *mOwner;
174    sp<IMemory> mMem;
175    size_t mSize;
176    bool mIsBackup;
177
178    BufferMeta(const BufferMeta &);
179    BufferMeta &operator=(const BufferMeta &);
180};
181
182OMX::OMX()
183    : mMaster(new OMXMaster),
184      mDispatcher(new CallbackDispatcher(this)),
185      mNodeCounter(0) {
186}
187
188OMX::~OMX() {
189    delete mMaster;
190    mMaster = NULL;
191}
192
193void OMX::binderDied(const wp<IBinder> &the_late_who) {
194    OMXNodeInstance *instance;
195
196    {
197        Mutex::Autolock autoLock(mLock);
198
199        ssize_t index = mLiveNodes.indexOfKey(the_late_who);
200        CHECK(index >= 0);
201
202        instance = mLiveNodes.editValueAt(index);
203        mLiveNodes.removeItemsAt(index);
204
205        invalidateNodeID_l(instance->nodeID());
206    }
207
208    instance->onObserverDied(mMaster);
209}
210
211status_t OMX::listNodes(List<ComponentInfo> *list) {
212    list->clear();
213
214    OMX_U32 index = 0;
215    char componentName[256];
216    while (mMaster->enumerateComponents(
217                componentName, sizeof(componentName), index) == OMX_ErrorNone) {
218        list->push_back(ComponentInfo());
219        ComponentInfo &info = *--list->end();
220
221        info.mName = componentName;
222
223        Vector<String8> roles;
224        OMX_ERRORTYPE err =
225            mMaster->getRolesOfComponent(componentName, &roles);
226
227        if (err == OMX_ErrorNone) {
228            for (OMX_U32 i = 0; i < roles.size(); ++i) {
229                info.mRoles.push_back(roles[i]);
230            }
231        }
232
233        ++index;
234    }
235
236    return OK;
237}
238
239status_t OMX::allocateNode(
240        const char *name, const sp<IOMXObserver> &observer, node_id *node) {
241    Mutex::Autolock autoLock(mLock);
242
243    *node = 0;
244
245    OMXNodeInstance *instance = new OMXNodeInstance(this, observer);
246
247    OMX_COMPONENTTYPE *handle;
248    OMX_ERRORTYPE err = mMaster->makeComponentInstance(
249            name, &OMXNodeInstance::kCallbacks,
250            instance, &handle);
251
252    if (err != OMX_ErrorNone) {
253        LOGV("FAILED to allocate omx component '%s'", name);
254
255        instance->onGetHandleFailed();
256
257        return UNKNOWN_ERROR;
258    }
259
260    *node = makeNodeID(instance);
261
262    instance->setHandle(*node, handle);
263
264    mLiveNodes.add(observer->asBinder(), instance);
265    observer->asBinder()->linkToDeath(this);
266
267    return OK;
268}
269
270status_t OMX::freeNode(node_id node) {
271    OMXNodeInstance *instance = findInstance(node);
272
273    ssize_t index = mLiveNodes.indexOfKey(instance->observer()->asBinder());
274    CHECK(index >= 0);
275    mLiveNodes.removeItemsAt(index);
276    instance->observer()->asBinder()->unlinkToDeath(this);
277
278    return instance->freeNode(mMaster);
279}
280
281status_t OMX::sendCommand(
282        node_id node, OMX_COMMANDTYPE cmd, OMX_S32 param) {
283    return findInstance(node)->sendCommand(cmd, param);
284}
285
286status_t OMX::getParameter(
287        node_id node, OMX_INDEXTYPE index,
288        void *params, size_t size) {
289    return findInstance(node)->getParameter(
290            index, params, size);
291}
292
293status_t OMX::setParameter(
294        node_id node, OMX_INDEXTYPE index,
295        const void *params, size_t size) {
296    return findInstance(node)->setParameter(
297            index, params, size);
298}
299
300status_t OMX::getConfig(
301        node_id node, OMX_INDEXTYPE index,
302        void *params, size_t size) {
303    return findInstance(node)->getConfig(
304            index, params, size);
305}
306
307status_t OMX::setConfig(
308        node_id node, OMX_INDEXTYPE index,
309        const void *params, size_t size) {
310    return findInstance(node)->setConfig(
311            index, params, size);
312}
313
314status_t OMX::useBuffer(
315        node_id node, OMX_U32 port_index, const sp<IMemory> &params,
316        buffer_id *buffer) {
317    return findInstance(node)->useBuffer(
318            port_index, params, buffer);
319}
320
321status_t OMX::allocateBuffer(
322        node_id node, OMX_U32 port_index, size_t size,
323        buffer_id *buffer) {
324    return findInstance(node)->allocateBuffer(
325            port_index, size, buffer);
326}
327
328status_t OMX::allocateBufferWithBackup(
329        node_id node, OMX_U32 port_index, const sp<IMemory> &params,
330        buffer_id *buffer) {
331    return findInstance(node)->allocateBufferWithBackup(
332            port_index, params, buffer);
333}
334
335status_t OMX::freeBuffer(node_id node, OMX_U32 port_index, buffer_id buffer) {
336    return findInstance(node)->freeBuffer(
337            port_index, buffer);
338}
339
340status_t OMX::fillBuffer(node_id node, buffer_id buffer) {
341    return findInstance(node)->fillBuffer(buffer);
342}
343
344status_t OMX::emptyBuffer(
345        node_id node,
346        buffer_id buffer,
347        OMX_U32 range_offset, OMX_U32 range_length,
348        OMX_U32 flags, OMX_TICKS timestamp) {
349    return findInstance(node)->emptyBuffer(
350            buffer, range_offset, range_length, flags, timestamp);
351}
352
353status_t OMX::getExtensionIndex(
354        node_id node,
355        const char *parameter_name,
356        OMX_INDEXTYPE *index) {
357    return findInstance(node)->getExtensionIndex(
358            parameter_name, index);
359}
360
361OMX_ERRORTYPE OMX::OnEvent(
362        node_id node,
363        OMX_IN OMX_EVENTTYPE eEvent,
364        OMX_IN OMX_U32 nData1,
365        OMX_IN OMX_U32 nData2,
366        OMX_IN OMX_PTR pEventData) {
367    LOGV("OnEvent(%d, %ld, %ld)", eEvent, nData1, nData2);
368
369    omx_message msg;
370    msg.type = omx_message::EVENT;
371    msg.node = node;
372    msg.u.event_data.event = eEvent;
373    msg.u.event_data.data1 = nData1;
374    msg.u.event_data.data2 = nData2;
375
376    mDispatcher->post(msg);
377
378    return OMX_ErrorNone;
379}
380
381OMX_ERRORTYPE OMX::OnEmptyBufferDone(
382        node_id node, OMX_IN OMX_BUFFERHEADERTYPE *pBuffer) {
383    LOGV("OnEmptyBufferDone buffer=%p", pBuffer);
384
385    omx_message msg;
386    msg.type = omx_message::EMPTY_BUFFER_DONE;
387    msg.node = node;
388    msg.u.buffer_data.buffer = pBuffer;
389
390    mDispatcher->post(msg);
391
392    return OMX_ErrorNone;
393}
394
395OMX_ERRORTYPE OMX::OnFillBufferDone(
396        node_id node, OMX_IN OMX_BUFFERHEADERTYPE *pBuffer) {
397    LOGV("OnFillBufferDone buffer=%p", pBuffer);
398
399    omx_message msg;
400    msg.type = omx_message::FILL_BUFFER_DONE;
401    msg.node = node;
402    msg.u.extended_buffer_data.buffer = pBuffer;
403    msg.u.extended_buffer_data.range_offset = pBuffer->nOffset;
404    msg.u.extended_buffer_data.range_length = pBuffer->nFilledLen;
405    msg.u.extended_buffer_data.flags = pBuffer->nFlags;
406    msg.u.extended_buffer_data.timestamp = pBuffer->nTimeStamp;
407    msg.u.extended_buffer_data.platform_private = pBuffer->pPlatformPrivate;
408
409    mDispatcher->post(msg);
410
411    return OMX_ErrorNone;
412}
413
414OMX::node_id OMX::makeNodeID(OMXNodeInstance *instance) {
415    // mLock is already held.
416
417    node_id node = (node_id)++mNodeCounter;
418    mNodeIDToInstance.add(node, instance);
419
420    return node;
421}
422
423OMXNodeInstance *OMX::findInstance(node_id node) {
424    Mutex::Autolock autoLock(mLock);
425
426    ssize_t index = mNodeIDToInstance.indexOfKey(node);
427
428    return index < 0 ? NULL : mNodeIDToInstance.valueAt(index);
429}
430
431void OMX::invalidateNodeID(node_id node) {
432    Mutex::Autolock autoLock(mLock);
433    invalidateNodeID_l(node);
434}
435
436void OMX::invalidateNodeID_l(node_id node) {
437    // mLock is held.
438    mNodeIDToInstance.removeItem(node);
439}
440
441////////////////////////////////////////////////////////////////////////////////
442
443sp<IOMXRenderer> OMX::createRenderer(
444        const sp<ISurface> &surface,
445        const char *componentName,
446        OMX_COLOR_FORMATTYPE colorFormat,
447        size_t encodedWidth, size_t encodedHeight,
448        size_t displayWidth, size_t displayHeight) {
449    Mutex::Autolock autoLock(mLock);
450
451    VideoRenderer *impl = NULL;
452
453    static void *libHandle = NULL;
454
455    if (!libHandle) {
456        libHandle = dlopen("libstagefrighthw.so", RTLD_NOW);
457    }
458
459    if (libHandle) {
460        typedef VideoRenderer *(*CreateRendererFunc)(
461                const sp<ISurface> &surface,
462                const char *componentName,
463                OMX_COLOR_FORMATTYPE colorFormat,
464                size_t displayWidth, size_t displayHeight,
465                size_t decodedWidth, size_t decodedHeight);
466
467        CreateRendererFunc func =
468            (CreateRendererFunc)dlsym(
469                    libHandle,
470                    "_Z14createRendererRKN7android2spINS_8ISurfaceEEEPKc20"
471                    "OMX_COLOR_FORMATTYPEjjjj");
472
473        if (func) {
474            impl = (*func)(surface, componentName, colorFormat,
475                    displayWidth, displayHeight, encodedWidth, encodedHeight);
476        }
477    }
478
479    if (!impl) {
480        LOGW("Using software renderer.");
481        impl = new SoftwareRenderer(
482                colorFormat,
483                surface,
484                displayWidth, displayHeight,
485                encodedWidth, encodedHeight);
486    }
487
488    return new OMXRenderer(impl);
489}
490
491OMXRenderer::OMXRenderer(VideoRenderer *impl)
492    : mImpl(impl) {
493}
494
495OMXRenderer::~OMXRenderer() {
496    delete mImpl;
497    mImpl = NULL;
498}
499
500void OMXRenderer::render(IOMX::buffer_id buffer) {
501    OMX_BUFFERHEADERTYPE *header = (OMX_BUFFERHEADERTYPE *)buffer;
502
503    mImpl->render(
504            header->pBuffer + header->nOffset,
505            header->nFilledLen,
506            header->pPlatformPrivate);
507}
508
509}  // namespace android
510
511