IOMX.cpp revision 85d9b4225d024bb0d602b48bd6d5219cbebd7b8e 
1//#define LOG_NDEBUG 0
2#define LOG_TAG "IOMX"
3#include <utils/Log.h>
4
5#include <binder/IMemory.h>
6#include <binder/Parcel.h>
7#include <media/IOMX.h>
8#include <surfaceflinger/ISurface.h>
9#include <surfaceflinger/Surface.h>
10
11namespace android {
12
13enum {
14    CONNECT = IBinder::FIRST_CALL_TRANSACTION,
15    LIVES_LOCALLY,
16    LIST_NODES,
17    ALLOCATE_NODE,
18    FREE_NODE,
19    SEND_COMMAND,
20    GET_PARAMETER,
21    SET_PARAMETER,
22    GET_CONFIG,
23    SET_CONFIG,
24    USE_BUFFER,
25    ALLOC_BUFFER,
26    ALLOC_BUFFER_WITH_BACKUP,
27    FREE_BUFFER,
28    FILL_BUFFER,
29    EMPTY_BUFFER,
30    GET_EXTENSION_INDEX,
31    CREATE_RENDERER,
32    OBSERVER_ON_MSG,
33    RENDERER_RENDER,
34};
35
36sp<IOMXRenderer> IOMX::createRenderer(
37        const sp<Surface> &surface,
38        const char *componentName,
39        OMX_COLOR_FORMATTYPE colorFormat,
40        size_t encodedWidth, size_t encodedHeight,
41        size_t displayWidth, size_t displayHeight,
42        int32_t rotationDegrees) {
43    return createRenderer(
44            surface->getISurface(),
45            componentName, colorFormat, encodedWidth, encodedHeight,
46            displayWidth, displayHeight,
47            rotationDegrees);
48}
49
50sp<IOMXRenderer> IOMX::createRendererFromJavaSurface(
51        JNIEnv *env, jobject javaSurface,
52        const char *componentName,
53        OMX_COLOR_FORMATTYPE colorFormat,
54        size_t encodedWidth, size_t encodedHeight,
55        size_t displayWidth, size_t displayHeight,
56        int32_t rotationDegrees) {
57    jclass surfaceClass = env->FindClass("android/view/Surface");
58    if (surfaceClass == NULL) {
59        LOGE("Can't find android/view/Surface");
60        return NULL;
61    }
62
63    jfieldID surfaceID = env->GetFieldID(surfaceClass, ANDROID_VIEW_SURFACE_JNI_ID, "I");
64    if (surfaceID == NULL) {
65        LOGE("Can't find Surface.mSurface");
66        return NULL;
67    }
68
69    sp<Surface> surface = (Surface *)env->GetIntField(javaSurface, surfaceID);
70
71    return createRenderer(
72            surface, componentName, colorFormat, encodedWidth,
73            encodedHeight, displayWidth, displayHeight,
74            rotationDegrees);
75}
76
77class BpOMX : public BpInterface<IOMX> {
78public:
79    BpOMX(const sp<IBinder> &impl)
80        : BpInterface<IOMX>(impl) {
81    }
82
83    virtual bool livesLocally(pid_t pid) {
84        Parcel data, reply;
85        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
86        data.writeInt32(pid);
87        remote()->transact(LIVES_LOCALLY, data, &reply);
88
89        return reply.readInt32() != 0;
90    }
91
92    virtual status_t listNodes(List<ComponentInfo> *list) {
93        list->clear();
94
95        Parcel data, reply;
96        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
97        remote()->transact(LIST_NODES, data, &reply);
98
99        int32_t n = reply.readInt32();
100        for (int32_t i = 0; i < n; ++i) {
101            list->push_back(ComponentInfo());
102            ComponentInfo &info = *--list->end();
103
104            info.mName = reply.readString8();
105            int32_t numRoles = reply.readInt32();
106            for (int32_t j = 0; j < numRoles; ++j) {
107                info.mRoles.push_back(reply.readString8());
108            }
109        }
110
111        return OK;
112    }
113
114    virtual status_t allocateNode(
115            const char *name, const sp<IOMXObserver> &observer, node_id *node) {
116        Parcel data, reply;
117        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
118        data.writeCString(name);
119        data.writeStrongBinder(observer->asBinder());
120        remote()->transact(ALLOCATE_NODE, data, &reply);
121
122        status_t err = reply.readInt32();
123        if (err == OK) {
124            *node = (void*)reply.readIntPtr();
125        } else {
126            *node = 0;
127        }
128
129        return err;
130    }
131
132    virtual status_t freeNode(node_id node) {
133        Parcel data, reply;
134        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
135        data.writeIntPtr((intptr_t)node);
136        remote()->transact(FREE_NODE, data, &reply);
137
138        return reply.readInt32();
139    }
140
141    virtual status_t sendCommand(
142            node_id node, OMX_COMMANDTYPE cmd, OMX_S32 param) {
143        Parcel data, reply;
144        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
145        data.writeIntPtr((intptr_t)node);
146        data.writeInt32(cmd);
147        data.writeInt32(param);
148        remote()->transact(SEND_COMMAND, data, &reply);
149
150        return reply.readInt32();
151    }
152
153    virtual status_t getParameter(
154            node_id node, OMX_INDEXTYPE index,
155            void *params, size_t size) {
156        Parcel data, reply;
157        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
158        data.writeIntPtr((intptr_t)node);
159        data.writeInt32(index);
160        data.writeInt32(size);
161        data.write(params, size);
162        remote()->transact(GET_PARAMETER, data, &reply);
163
164        status_t err = reply.readInt32();
165        if (err != OK) {
166            return err;
167        }
168
169        reply.read(params, size);
170
171        return OK;
172    }
173
174    virtual status_t setParameter(
175            node_id node, OMX_INDEXTYPE index,
176            const void *params, size_t size) {
177        Parcel data, reply;
178        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
179        data.writeIntPtr((intptr_t)node);
180        data.writeInt32(index);
181        data.writeInt32(size);
182        data.write(params, size);
183        remote()->transact(SET_PARAMETER, data, &reply);
184
185        return reply.readInt32();
186    }
187
188    virtual status_t getConfig(
189            node_id node, OMX_INDEXTYPE index,
190            void *params, size_t size) {
191        Parcel data, reply;
192        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
193        data.writeIntPtr((intptr_t)node);
194        data.writeInt32(index);
195        data.writeInt32(size);
196        data.write(params, size);
197        remote()->transact(GET_CONFIG, data, &reply);
198
199        status_t err = reply.readInt32();
200        if (err != OK) {
201            return err;
202        }
203
204        reply.read(params, size);
205
206        return OK;
207    }
208
209    virtual status_t setConfig(
210            node_id node, OMX_INDEXTYPE index,
211            const void *params, size_t size) {
212        Parcel data, reply;
213        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
214        data.writeIntPtr((intptr_t)node);
215        data.writeInt32(index);
216        data.writeInt32(size);
217        data.write(params, size);
218        remote()->transact(SET_CONFIG, data, &reply);
219
220        return reply.readInt32();
221    }
222
223    virtual status_t useBuffer(
224            node_id node, OMX_U32 port_index, const sp<IMemory> &params,
225            buffer_id *buffer) {
226        Parcel data, reply;
227        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
228        data.writeIntPtr((intptr_t)node);
229        data.writeInt32(port_index);
230        data.writeStrongBinder(params->asBinder());
231        remote()->transact(USE_BUFFER, data, &reply);
232
233        status_t err = reply.readInt32();
234        if (err != OK) {
235            *buffer = 0;
236
237            return err;
238        }
239
240        *buffer = (void*)reply.readIntPtr();
241
242        return err;
243    }
244
245    virtual status_t allocateBuffer(
246            node_id node, OMX_U32 port_index, size_t size,
247            buffer_id *buffer, void **buffer_data) {
248        Parcel data, reply;
249        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
250        data.writeIntPtr((intptr_t)node);
251        data.writeInt32(port_index);
252        data.writeInt32(size);
253        remote()->transact(ALLOC_BUFFER, data, &reply);
254
255        status_t err = reply.readInt32();
256        if (err != OK) {
257            *buffer = 0;
258
259            return err;
260        }
261
262        *buffer = (void *)reply.readIntPtr();
263        *buffer_data = (void *)reply.readIntPtr();
264
265        return err;
266    }
267
268    virtual status_t allocateBufferWithBackup(
269            node_id node, OMX_U32 port_index, const sp<IMemory> &params,
270            buffer_id *buffer) {
271        Parcel data, reply;
272        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
273        data.writeIntPtr((intptr_t)node);
274        data.writeInt32(port_index);
275        data.writeStrongBinder(params->asBinder());
276        remote()->transact(ALLOC_BUFFER_WITH_BACKUP, data, &reply);
277
278        status_t err = reply.readInt32();
279        if (err != OK) {
280            *buffer = 0;
281
282            return err;
283        }
284
285        *buffer = (void*)reply.readIntPtr();
286
287        return err;
288    }
289
290    virtual status_t freeBuffer(
291            node_id node, OMX_U32 port_index, buffer_id buffer) {
292        Parcel data, reply;
293        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
294        data.writeIntPtr((intptr_t)node);
295        data.writeInt32(port_index);
296        data.writeIntPtr((intptr_t)buffer);
297        remote()->transact(FREE_BUFFER, data, &reply);
298
299        return reply.readInt32();
300    }
301
302    virtual status_t fillBuffer(node_id node, buffer_id buffer) {
303        Parcel data, reply;
304        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
305        data.writeIntPtr((intptr_t)node);
306        data.writeIntPtr((intptr_t)buffer);
307        remote()->transact(FILL_BUFFER, data, &reply);
308
309        return reply.readInt32();
310    }
311
312    virtual status_t emptyBuffer(
313            node_id node,
314            buffer_id buffer,
315            OMX_U32 range_offset, OMX_U32 range_length,
316            OMX_U32 flags, OMX_TICKS timestamp) {
317        Parcel data, reply;
318        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
319        data.writeIntPtr((intptr_t)node);
320        data.writeIntPtr((intptr_t)buffer);
321        data.writeInt32(range_offset);
322        data.writeInt32(range_length);
323        data.writeInt32(flags);
324        data.writeInt64(timestamp);
325        remote()->transact(EMPTY_BUFFER, data, &reply);
326
327        return reply.readInt32();
328    }
329
330    virtual status_t getExtensionIndex(
331            node_id node,
332            const char *parameter_name,
333            OMX_INDEXTYPE *index) {
334        Parcel data, reply;
335        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
336        data.writeIntPtr((intptr_t)node);
337        data.writeCString(parameter_name);
338
339        remote()->transact(GET_EXTENSION_INDEX, data, &reply);
340
341        status_t err = reply.readInt32();
342        if (err == OK) {
343            *index = static_cast<OMX_INDEXTYPE>(reply.readInt32());
344        } else {
345            *index = OMX_IndexComponentStartUnused;
346        }
347
348        return err;
349    }
350
351    virtual sp<IOMXRenderer> createRenderer(
352            const sp<ISurface> &surface,
353            const char *componentName,
354            OMX_COLOR_FORMATTYPE colorFormat,
355            size_t encodedWidth, size_t encodedHeight,
356            size_t displayWidth, size_t displayHeight,
357            int32_t rotationDegrees) {
358        Parcel data, reply;
359        data.writeInterfaceToken(IOMX::getInterfaceDescriptor());
360
361        data.writeStrongBinder(surface->asBinder());
362        data.writeCString(componentName);
363        data.writeInt32(colorFormat);
364        data.writeInt32(encodedWidth);
365        data.writeInt32(encodedHeight);
366        data.writeInt32(displayWidth);
367        data.writeInt32(displayHeight);
368        data.writeInt32(rotationDegrees);
369
370        remote()->transact(CREATE_RENDERER, data, &reply);
371
372        return interface_cast<IOMXRenderer>(reply.readStrongBinder());
373    }
374};
375
376IMPLEMENT_META_INTERFACE(OMX, "android.hardware.IOMX");
377
378////////////////////////////////////////////////////////////////////////////////
379
380#define CHECK_INTERFACE(interface, data, reply) \
381        do { if (!data.enforceInterface(interface::getInterfaceDescriptor())) { \
382            LOGW("Call incorrectly routed to " #interface); \
383            return PERMISSION_DENIED; \
384        } } while (0)
385
386status_t BnOMX::onTransact(
387    uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
388    switch (code) {
389        case LIVES_LOCALLY:
390        {
391            CHECK_INTERFACE(IOMX, data, reply);
392            reply->writeInt32(livesLocally((pid_t)data.readInt32()));
393
394            return OK;
395        }
396
397        case LIST_NODES:
398        {
399            CHECK_INTERFACE(IOMX, data, reply);
400
401            List<ComponentInfo> list;
402            listNodes(&list);
403
404            reply->writeInt32(list.size());
405            for (List<ComponentInfo>::iterator it = list.begin();
406                 it != list.end(); ++it) {
407                ComponentInfo &cur = *it;
408
409                reply->writeString8(cur.mName);
410                reply->writeInt32(cur.mRoles.size());
411                for (List<String8>::iterator role_it = cur.mRoles.begin();
412                     role_it != cur.mRoles.end(); ++role_it) {
413                    reply->writeString8(*role_it);
414                }
415            }
416
417            return NO_ERROR;
418        }
419
420        case ALLOCATE_NODE:
421        {
422            CHECK_INTERFACE(IOMX, data, reply);
423
424            const char *name = data.readCString();
425
426            sp<IOMXObserver> observer =
427                interface_cast<IOMXObserver>(data.readStrongBinder());
428
429            node_id node;
430
431            status_t err = allocateNode(name, observer, &node);
432            reply->writeInt32(err);
433            if (err == OK) {
434                reply->writeIntPtr((intptr_t)node);
435            }
436
437            return NO_ERROR;
438        }
439
440        case FREE_NODE:
441        {
442            CHECK_INTERFACE(IOMX, data, reply);
443
444            node_id node = (void*)data.readIntPtr();
445
446            reply->writeInt32(freeNode(node));
447
448            return NO_ERROR;
449        }
450
451        case SEND_COMMAND:
452        {
453            CHECK_INTERFACE(IOMX, data, reply);
454
455            node_id node = (void*)data.readIntPtr();
456
457            OMX_COMMANDTYPE cmd =
458                static_cast<OMX_COMMANDTYPE>(data.readInt32());
459
460            OMX_S32 param = data.readInt32();
461            reply->writeInt32(sendCommand(node, cmd, param));
462
463            return NO_ERROR;
464        }
465
466        case GET_PARAMETER:
467        {
468            CHECK_INTERFACE(IOMX, data, reply);
469
470            node_id node = (void*)data.readIntPtr();
471            OMX_INDEXTYPE index = static_cast<OMX_INDEXTYPE>(data.readInt32());
472
473            size_t size = data.readInt32();
474
475            // XXX I am not happy with this but Parcel::readInplace didn't work.
476            void *params = malloc(size);
477            data.read(params, size);
478
479            status_t err = getParameter(node, index, params, size);
480
481            reply->writeInt32(err);
482
483            if (err == OK) {
484                reply->write(params, size);
485            }
486
487            free(params);
488            params = NULL;
489
490            return NO_ERROR;
491        }
492
493        case SET_PARAMETER:
494        {
495            CHECK_INTERFACE(IOMX, data, reply);
496
497            node_id node = (void*)data.readIntPtr();
498            OMX_INDEXTYPE index = static_cast<OMX_INDEXTYPE>(data.readInt32());
499
500            size_t size = data.readInt32();
501            void *params = const_cast<void *>(data.readInplace(size));
502
503            reply->writeInt32(setParameter(node, index, params, size));
504
505            return NO_ERROR;
506        }
507
508        case GET_CONFIG:
509        {
510            CHECK_INTERFACE(IOMX, data, reply);
511
512            node_id node = (void*)data.readIntPtr();
513            OMX_INDEXTYPE index = static_cast<OMX_INDEXTYPE>(data.readInt32());
514
515            size_t size = data.readInt32();
516
517            // XXX I am not happy with this but Parcel::readInplace didn't work.
518            void *params = malloc(size);
519            data.read(params, size);
520
521            status_t err = getConfig(node, index, params, size);
522
523            reply->writeInt32(err);
524
525            if (err == OK) {
526                reply->write(params, size);
527            }
528
529            free(params);
530            params = NULL;
531
532            return NO_ERROR;
533        }
534
535        case SET_CONFIG:
536        {
537            CHECK_INTERFACE(IOMX, data, reply);
538
539            node_id node = (void*)data.readIntPtr();
540            OMX_INDEXTYPE index = static_cast<OMX_INDEXTYPE>(data.readInt32());
541
542            size_t size = data.readInt32();
543            void *params = const_cast<void *>(data.readInplace(size));
544
545            reply->writeInt32(setConfig(node, index, params, size));
546
547            return NO_ERROR;
548        }
549
550        case USE_BUFFER:
551        {
552            CHECK_INTERFACE(IOMX, data, reply);
553
554            node_id node = (void*)data.readIntPtr();
555            OMX_U32 port_index = data.readInt32();
556            sp<IMemory> params =
557                interface_cast<IMemory>(data.readStrongBinder());
558
559            buffer_id buffer;
560            status_t err = useBuffer(node, port_index, params, &buffer);
561            reply->writeInt32(err);
562
563            if (err == OK) {
564                reply->writeIntPtr((intptr_t)buffer);
565            }
566
567            return NO_ERROR;
568        }
569
570        case ALLOC_BUFFER:
571        {
572            CHECK_INTERFACE(IOMX, data, reply);
573
574            node_id node = (void*)data.readIntPtr();
575            OMX_U32 port_index = data.readInt32();
576            size_t size = data.readInt32();
577
578            buffer_id buffer;
579            void *buffer_data;
580            status_t err = allocateBuffer(
581                    node, port_index, size, &buffer, &buffer_data);
582            reply->writeInt32(err);
583
584            if (err == OK) {
585                reply->writeIntPtr((intptr_t)buffer);
586                reply->writeIntPtr((intptr_t)buffer_data);
587            }
588
589            return NO_ERROR;
590        }
591
592        case ALLOC_BUFFER_WITH_BACKUP:
593        {
594            CHECK_INTERFACE(IOMX, data, reply);
595
596            node_id node = (void*)data.readIntPtr();
597            OMX_U32 port_index = data.readInt32();
598            sp<IMemory> params =
599                interface_cast<IMemory>(data.readStrongBinder());
600
601            buffer_id buffer;
602            status_t err = allocateBufferWithBackup(
603                    node, port_index, params, &buffer);
604
605            reply->writeInt32(err);
606
607            if (err == OK) {
608                reply->writeIntPtr((intptr_t)buffer);
609            }
610
611            return NO_ERROR;
612        }
613
614        case FREE_BUFFER:
615        {
616            CHECK_INTERFACE(IOMX, data, reply);
617
618            node_id node = (void*)data.readIntPtr();
619            OMX_U32 port_index = data.readInt32();
620            buffer_id buffer = (void*)data.readIntPtr();
621            reply->writeInt32(freeBuffer(node, port_index, buffer));
622
623            return NO_ERROR;
624        }
625
626        case FILL_BUFFER:
627        {
628            CHECK_INTERFACE(IOMX, data, reply);
629
630            node_id node = (void*)data.readIntPtr();
631            buffer_id buffer = (void*)data.readIntPtr();
632            reply->writeInt32(fillBuffer(node, buffer));
633
634            return NO_ERROR;
635        }
636
637        case EMPTY_BUFFER:
638        {
639            CHECK_INTERFACE(IOMX, data, reply);
640
641            node_id node = (void*)data.readIntPtr();
642            buffer_id buffer = (void*)data.readIntPtr();
643            OMX_U32 range_offset = data.readInt32();
644            OMX_U32 range_length = data.readInt32();
645            OMX_U32 flags = data.readInt32();
646            OMX_TICKS timestamp = data.readInt64();
647
648            reply->writeInt32(
649                    emptyBuffer(
650                        node, buffer, range_offset, range_length,
651                        flags, timestamp));
652
653            return NO_ERROR;
654        }
655
656        case GET_EXTENSION_INDEX:
657        {
658            CHECK_INTERFACE(IOMX, data, reply);
659
660            node_id node = (void*)data.readIntPtr();
661            const char *parameter_name = data.readCString();
662
663            OMX_INDEXTYPE index;
664            status_t err = getExtensionIndex(node, parameter_name, &index);
665
666            reply->writeInt32(err);
667
668            if (err == OK) {
669                reply->writeInt32(index);
670            }
671
672            return OK;
673        }
674
675        case CREATE_RENDERER:
676        {
677            CHECK_INTERFACE(IOMX, data, reply);
678
679            sp<ISurface> isurface =
680                interface_cast<ISurface>(data.readStrongBinder());
681
682            const char *componentName = data.readCString();
683
684            OMX_COLOR_FORMATTYPE colorFormat =
685                static_cast<OMX_COLOR_FORMATTYPE>(data.readInt32());
686
687            size_t encodedWidth = (size_t)data.readInt32();
688            size_t encodedHeight = (size_t)data.readInt32();
689            size_t displayWidth = (size_t)data.readInt32();
690            size_t displayHeight = (size_t)data.readInt32();
691            int32_t rotationDegrees = data.readInt32();
692
693            sp<IOMXRenderer> renderer =
694                createRenderer(isurface, componentName, colorFormat,
695                               encodedWidth, encodedHeight,
696                               displayWidth, displayHeight,
697                               rotationDegrees);
698
699            reply->writeStrongBinder(renderer->asBinder());
700
701            return OK;
702        }
703
704        default:
705            return BBinder::onTransact(code, data, reply, flags);
706    }
707}
708
709////////////////////////////////////////////////////////////////////////////////
710
711class BpOMXObserver : public BpInterface<IOMXObserver> {
712public:
713    BpOMXObserver(const sp<IBinder> &impl)
714        : BpInterface<IOMXObserver>(impl) {
715    }
716
717    virtual void onMessage(const omx_message &msg) {
718        Parcel data, reply;
719        data.writeInterfaceToken(IOMXObserver::getInterfaceDescriptor());
720        data.write(&msg, sizeof(msg));
721
722        remote()->transact(OBSERVER_ON_MSG, data, &reply, IBinder::FLAG_ONEWAY);
723    }
724};
725
726IMPLEMENT_META_INTERFACE(OMXObserver, "android.hardware.IOMXObserver");
727
728status_t BnOMXObserver::onTransact(
729    uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
730    switch (code) {
731        case OBSERVER_ON_MSG:
732        {
733            CHECK_INTERFACE(IOMXObserver, data, reply);
734
735            omx_message msg;
736            data.read(&msg, sizeof(msg));
737
738            // XXX Could use readInplace maybe?
739            onMessage(msg);
740
741            return NO_ERROR;
742        }
743
744        default:
745            return BBinder::onTransact(code, data, reply, flags);
746    }
747}
748
749////////////////////////////////////////////////////////////////////////////////
750
751class BpOMXRenderer : public BpInterface<IOMXRenderer> {
752public:
753    BpOMXRenderer(const sp<IBinder> &impl)
754        : BpInterface<IOMXRenderer>(impl) {
755    }
756
757    virtual void render(IOMX::buffer_id buffer) {
758        Parcel data, reply;
759        data.writeInterfaceToken(IOMXRenderer::getInterfaceDescriptor());
760        data.writeIntPtr((intptr_t)buffer);
761
762        // NOTE: Do NOT make this a ONE_WAY call, it must be synchronous
763        // so that the caller knows when to recycle the buffer.
764        remote()->transact(RENDERER_RENDER, data, &reply);
765    }
766};
767
768IMPLEMENT_META_INTERFACE(OMXRenderer, "android.hardware.IOMXRenderer");
769
770status_t BnOMXRenderer::onTransact(
771    uint32_t code, const Parcel &data, Parcel *reply, uint32_t flags) {
772    switch (code) {
773        case RENDERER_RENDER:
774        {
775            CHECK_INTERFACE(IOMXRenderer, data, reply);
776
777            IOMX::buffer_id buffer = (void*)data.readIntPtr();
778
779            render(buffer);
780
781            return NO_ERROR;
782        }
783
784        default:
785            return BBinder::onTransact(code, data, reply, flags);
786    }
787}
788
789}  // namespace android
790