OMX.cpp revision 81dbf71f4488ee1a4cb612f2aba341f365fb546a 
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
138OMX::OMX()
139    : mMaster(new OMXMaster),
140      mDispatcher(new CallbackDispatcher(this)),
141      mNodeCounter(0) {
142}
143
144OMX::~OMX() {
145    delete mMaster;
146    mMaster = NULL;
147}
148
149void OMX::binderDied(const wp<IBinder> &the_late_who) {
150    OMXNodeInstance *instance;
151
152    {
153        Mutex::Autolock autoLock(mLock);
154
155        ssize_t index = mLiveNodes.indexOfKey(the_late_who);
156        CHECK(index >= 0);
157
158        instance = mLiveNodes.editValueAt(index);
159        mLiveNodes.removeItemsAt(index);
160
161        invalidateNodeID_l(instance->nodeID());
162    }
163
164    instance->onObserverDied(mMaster);
165}
166
167status_t OMX::listNodes(List<ComponentInfo> *list) {
168    list->clear();
169
170    OMX_U32 index = 0;
171    char componentName[256];
172    while (mMaster->enumerateComponents(
173                componentName, sizeof(componentName), index) == OMX_ErrorNone) {
174        list->push_back(ComponentInfo());
175        ComponentInfo &info = *--list->end();
176
177        info.mName = componentName;
178
179        Vector<String8> roles;
180        OMX_ERRORTYPE err =
181            mMaster->getRolesOfComponent(componentName, &roles);
182
183        if (err == OMX_ErrorNone) {
184            for (OMX_U32 i = 0; i < roles.size(); ++i) {
185                info.mRoles.push_back(roles[i]);
186            }
187        }
188
189        ++index;
190    }
191
192    return OK;
193}
194
195status_t OMX::allocateNode(
196        const char *name, const sp<IOMXObserver> &observer, node_id *node) {
197    Mutex::Autolock autoLock(mLock);
198
199    *node = 0;
200
201    OMXNodeInstance *instance = new OMXNodeInstance(this, observer);
202
203    OMX_COMPONENTTYPE *handle;
204    OMX_ERRORTYPE err = mMaster->makeComponentInstance(
205            name, &OMXNodeInstance::kCallbacks,
206            instance, &handle);
207
208    if (err != OMX_ErrorNone) {
209        LOGV("FAILED to allocate omx component '%s'", name);
210
211        instance->onGetHandleFailed();
212
213        return UNKNOWN_ERROR;
214    }
215
216    *node = makeNodeID(instance);
217
218    instance->setHandle(*node, handle);
219
220    mLiveNodes.add(observer->asBinder(), instance);
221    observer->asBinder()->linkToDeath(this);
222
223    return OK;
224}
225
226status_t OMX::freeNode(node_id node) {
227    OMXNodeInstance *instance = findInstance(node);
228
229    ssize_t index = mLiveNodes.indexOfKey(instance->observer()->asBinder());
230    CHECK(index >= 0);
231    mLiveNodes.removeItemsAt(index);
232    instance->observer()->asBinder()->unlinkToDeath(this);
233
234    return instance->freeNode(mMaster);
235}
236
237status_t OMX::sendCommand(
238        node_id node, OMX_COMMANDTYPE cmd, OMX_S32 param) {
239    return findInstance(node)->sendCommand(cmd, param);
240}
241
242status_t OMX::getParameter(
243        node_id node, OMX_INDEXTYPE index,
244        void *params, size_t size) {
245    return findInstance(node)->getParameter(
246            index, params, size);
247}
248
249status_t OMX::setParameter(
250        node_id node, OMX_INDEXTYPE index,
251        const void *params, size_t size) {
252    return findInstance(node)->setParameter(
253            index, params, size);
254}
255
256status_t OMX::getConfig(
257        node_id node, OMX_INDEXTYPE index,
258        void *params, size_t size) {
259    return findInstance(node)->getConfig(
260            index, params, size);
261}
262
263status_t OMX::setConfig(
264        node_id node, OMX_INDEXTYPE index,
265        const void *params, size_t size) {
266    return findInstance(node)->setConfig(
267            index, params, size);
268}
269
270status_t OMX::useBuffer(
271        node_id node, OMX_U32 port_index, const sp<IMemory> &params,
272        buffer_id *buffer) {
273    return findInstance(node)->useBuffer(
274            port_index, params, buffer);
275}
276
277status_t OMX::allocateBuffer(
278        node_id node, OMX_U32 port_index, size_t size,
279        buffer_id *buffer) {
280    return findInstance(node)->allocateBuffer(
281            port_index, size, buffer);
282}
283
284status_t OMX::allocateBufferWithBackup(
285        node_id node, OMX_U32 port_index, const sp<IMemory> &params,
286        buffer_id *buffer) {
287    return findInstance(node)->allocateBufferWithBackup(
288            port_index, params, buffer);
289}
290
291status_t OMX::freeBuffer(node_id node, OMX_U32 port_index, buffer_id buffer) {
292    return findInstance(node)->freeBuffer(
293            port_index, buffer);
294}
295
296status_t OMX::fillBuffer(node_id node, buffer_id buffer) {
297    return findInstance(node)->fillBuffer(buffer);
298}
299
300status_t OMX::emptyBuffer(
301        node_id node,
302        buffer_id buffer,
303        OMX_U32 range_offset, OMX_U32 range_length,
304        OMX_U32 flags, OMX_TICKS timestamp) {
305    return findInstance(node)->emptyBuffer(
306            buffer, range_offset, range_length, flags, timestamp);
307}
308
309status_t OMX::getExtensionIndex(
310        node_id node,
311        const char *parameter_name,
312        OMX_INDEXTYPE *index) {
313    return findInstance(node)->getExtensionIndex(
314            parameter_name, index);
315}
316
317OMX_ERRORTYPE OMX::OnEvent(
318        node_id node,
319        OMX_IN OMX_EVENTTYPE eEvent,
320        OMX_IN OMX_U32 nData1,
321        OMX_IN OMX_U32 nData2,
322        OMX_IN OMX_PTR pEventData) {
323    LOGV("OnEvent(%d, %ld, %ld)", eEvent, nData1, nData2);
324
325    omx_message msg;
326    msg.type = omx_message::EVENT;
327    msg.node = node;
328    msg.u.event_data.event = eEvent;
329    msg.u.event_data.data1 = nData1;
330    msg.u.event_data.data2 = nData2;
331
332    mDispatcher->post(msg);
333
334    return OMX_ErrorNone;
335}
336
337OMX_ERRORTYPE OMX::OnEmptyBufferDone(
338        node_id node, OMX_IN OMX_BUFFERHEADERTYPE *pBuffer) {
339    LOGV("OnEmptyBufferDone buffer=%p", pBuffer);
340
341    omx_message msg;
342    msg.type = omx_message::EMPTY_BUFFER_DONE;
343    msg.node = node;
344    msg.u.buffer_data.buffer = pBuffer;
345
346    mDispatcher->post(msg);
347
348    return OMX_ErrorNone;
349}
350
351OMX_ERRORTYPE OMX::OnFillBufferDone(
352        node_id node, OMX_IN OMX_BUFFERHEADERTYPE *pBuffer) {
353    LOGV("OnFillBufferDone buffer=%p", pBuffer);
354
355    omx_message msg;
356    msg.type = omx_message::FILL_BUFFER_DONE;
357    msg.node = node;
358    msg.u.extended_buffer_data.buffer = pBuffer;
359    msg.u.extended_buffer_data.range_offset = pBuffer->nOffset;
360    msg.u.extended_buffer_data.range_length = pBuffer->nFilledLen;
361    msg.u.extended_buffer_data.flags = pBuffer->nFlags;
362    msg.u.extended_buffer_data.timestamp = pBuffer->nTimeStamp;
363    msg.u.extended_buffer_data.platform_private = pBuffer->pPlatformPrivate;
364
365    mDispatcher->post(msg);
366
367    return OMX_ErrorNone;
368}
369
370OMX::node_id OMX::makeNodeID(OMXNodeInstance *instance) {
371    // mLock is already held.
372
373    node_id node = (node_id)++mNodeCounter;
374    mNodeIDToInstance.add(node, instance);
375
376    return node;
377}
378
379OMXNodeInstance *OMX::findInstance(node_id node) {
380    Mutex::Autolock autoLock(mLock);
381
382    ssize_t index = mNodeIDToInstance.indexOfKey(node);
383
384    return index < 0 ? NULL : mNodeIDToInstance.valueAt(index);
385}
386
387void OMX::invalidateNodeID(node_id node) {
388    Mutex::Autolock autoLock(mLock);
389    invalidateNodeID_l(node);
390}
391
392void OMX::invalidateNodeID_l(node_id node) {
393    // mLock is held.
394    mNodeIDToInstance.removeItem(node);
395}
396
397////////////////////////////////////////////////////////////////////////////////
398
399sp<IOMXRenderer> OMX::createRenderer(
400        const sp<ISurface> &surface,
401        const char *componentName,
402        OMX_COLOR_FORMATTYPE colorFormat,
403        size_t encodedWidth, size_t encodedHeight,
404        size_t displayWidth, size_t displayHeight) {
405    Mutex::Autolock autoLock(mLock);
406
407    VideoRenderer *impl = NULL;
408
409    static void *libHandle = NULL;
410
411    if (!libHandle) {
412        libHandle = dlopen("libstagefrighthw.so", RTLD_NOW);
413    }
414
415    if (libHandle) {
416        typedef VideoRenderer *(*CreateRendererFunc)(
417                const sp<ISurface> &surface,
418                const char *componentName,
419                OMX_COLOR_FORMATTYPE colorFormat,
420                size_t displayWidth, size_t displayHeight,
421                size_t decodedWidth, size_t decodedHeight);
422
423        CreateRendererFunc func =
424            (CreateRendererFunc)dlsym(
425                    libHandle,
426                    "_Z14createRendererRKN7android2spINS_8ISurfaceEEEPKc20"
427                    "OMX_COLOR_FORMATTYPEjjjj");
428
429        if (func) {
430            impl = (*func)(surface, componentName, colorFormat,
431                    displayWidth, displayHeight, encodedWidth, encodedHeight);
432        }
433    }
434
435    if (!impl) {
436        LOGW("Using software renderer.");
437        impl = new SoftwareRenderer(
438                colorFormat,
439                surface,
440                displayWidth, displayHeight,
441                encodedWidth, encodedHeight);
442    }
443
444    return new OMXRenderer(impl);
445}
446
447OMXRenderer::OMXRenderer(VideoRenderer *impl)
448    : mImpl(impl) {
449}
450
451OMXRenderer::~OMXRenderer() {
452    delete mImpl;
453    mImpl = NULL;
454}
455
456void OMXRenderer::render(IOMX::buffer_id buffer) {
457    OMX_BUFFERHEADERTYPE *header = (OMX_BUFFERHEADERTYPE *)buffer;
458
459    mImpl->render(
460            header->pBuffer + header->nOffset,
461            header->nFilledLen,
462            header->pPlatformPrivate);
463}
464
465}  // namespace android
466
467