NdkMediaCodec.cpp revision 8c35da50221e6d87e49c13ad2f058f265b3b29c4 
1/*
2 * Copyright (C) 2014 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#include <inttypes.h>
18
19//#define LOG_NDEBUG 0
20#define LOG_TAG "NdkMediaCodec"
21
22#include "NdkMediaCodec.h"
23#include "NdkMediaError.h"
24#include "NdkMediaCryptoPriv.h"
25#include "NdkMediaFormatPriv.h"
26
27#include <utils/Log.h>
28#include <utils/StrongPointer.h>
29#include <gui/Surface.h>
30
31#include <media/stagefright/foundation/ALooper.h>
32#include <media/stagefright/foundation/AMessage.h>
33#include <media/stagefright/foundation/ABuffer.h>
34
35#include <media/stagefright/MediaCodec.h>
36#include <media/stagefright/MediaErrors.h>
37
38using namespace android;
39
40
41static media_status_t translate_error(status_t err) {
42    if (err == OK) {
43        return AMEDIA_OK;
44    } else if (err == -EAGAIN) {
45        return (media_status_t) AMEDIACODEC_INFO_TRY_AGAIN_LATER;
46    }
47    ALOGE("sf error code: %d", err);
48    return AMEDIA_ERROR_UNKNOWN;
49}
50
51enum {
52    kWhatActivityNotify,
53    kWhatRequestActivityNotifications,
54    kWhatStopActivityNotifications,
55};
56
57
58class CodecHandler: public AHandler {
59private:
60    AMediaCodec* mCodec;
61public:
62    CodecHandler(AMediaCodec *codec);
63    virtual void onMessageReceived(const sp<AMessage> &msg);
64};
65
66typedef void (*OnCodecEvent)(AMediaCodec *codec, void *userdata);
67
68struct AMediaCodec {
69    sp<android::MediaCodec> mCodec;
70    sp<ALooper> mLooper;
71    sp<CodecHandler> mHandler;
72    sp<AMessage> mActivityNotification;
73    int32_t mGeneration;
74    bool mRequestedActivityNotification;
75    OnCodecEvent mCallback;
76    void *mCallbackUserData;
77};
78
79CodecHandler::CodecHandler(AMediaCodec *codec) {
80    mCodec = codec;
81}
82
83void CodecHandler::onMessageReceived(const sp<AMessage> &msg) {
84
85    switch (msg->what()) {
86        case kWhatRequestActivityNotifications:
87        {
88            if (mCodec->mRequestedActivityNotification) {
89                break;
90            }
91
92            mCodec->mCodec->requestActivityNotification(mCodec->mActivityNotification);
93            mCodec->mRequestedActivityNotification = true;
94            break;
95        }
96
97        case kWhatActivityNotify:
98        {
99            {
100                int32_t generation;
101                msg->findInt32("generation", &generation);
102
103                if (generation != mCodec->mGeneration) {
104                    // stale
105                    break;
106                }
107
108                mCodec->mRequestedActivityNotification = false;
109            }
110
111            if (mCodec->mCallback) {
112                mCodec->mCallback(mCodec, mCodec->mCallbackUserData);
113            }
114            break;
115        }
116
117        case kWhatStopActivityNotifications:
118        {
119            sp<AReplyToken> replyID;
120            msg->senderAwaitsResponse(&replyID);
121
122            mCodec->mGeneration++;
123            mCodec->mRequestedActivityNotification = false;
124
125            sp<AMessage> response = new AMessage;
126            response->postReply(replyID);
127            break;
128        }
129
130        default:
131            ALOGE("shouldn't be here");
132            break;
133    }
134
135}
136
137
138static void requestActivityNotification(AMediaCodec *codec) {
139    (new AMessage(kWhatRequestActivityNotifications, codec->mHandler))->post();
140}
141
142extern "C" {
143
144static AMediaCodec * createAMediaCodec(const char *name, bool name_is_type, bool encoder) {
145    AMediaCodec *mData = new AMediaCodec();
146    mData->mLooper = new ALooper;
147    mData->mLooper->setName("NDK MediaCodec_looper");
148    status_t ret = mData->mLooper->start(
149            false,      // runOnCallingThread
150            true,       // canCallJava XXX
151            PRIORITY_FOREGROUND);
152    if (name_is_type) {
153        mData->mCodec = android::MediaCodec::CreateByType(mData->mLooper, name, encoder);
154    } else {
155        mData->mCodec = android::MediaCodec::CreateByComponentName(mData->mLooper, name);
156    }
157    if (mData->mCodec == NULL) {  // failed to create codec
158        AMediaCodec_delete(mData);
159        return NULL;
160    }
161    mData->mHandler = new CodecHandler(mData);
162    mData->mLooper->registerHandler(mData->mHandler);
163    mData->mGeneration = 1;
164    mData->mRequestedActivityNotification = false;
165    mData->mCallback = NULL;
166
167    return mData;
168}
169
170EXPORT
171AMediaCodec* AMediaCodec_createCodecByName(const char *name) {
172    return createAMediaCodec(name, false, false);
173}
174
175EXPORT
176AMediaCodec* AMediaCodec_createDecoderByType(const char *mime_type) {
177    return createAMediaCodec(mime_type, true, false);
178}
179
180EXPORT
181AMediaCodec* AMediaCodec_createEncoderByType(const char *name) {
182    return createAMediaCodec(name, true, true);
183}
184
185EXPORT
186media_status_t AMediaCodec_delete(AMediaCodec *mData) {
187    if (mData != NULL) {
188        if (mData->mCodec != NULL) {
189            mData->mCodec->release();
190            mData->mCodec.clear();
191        }
192
193        if (mData->mLooper != NULL) {
194            if (mData->mHandler != NULL) {
195                mData->mLooper->unregisterHandler(mData->mHandler->id());
196            }
197            mData->mLooper->stop();
198            mData->mLooper.clear();
199        }
200        delete mData;
201    }
202    return AMEDIA_OK;
203}
204
205EXPORT
206media_status_t AMediaCodec_configure(
207        AMediaCodec *mData,
208        const AMediaFormat* format,
209        ANativeWindow* window,
210        AMediaCrypto *crypto,
211        uint32_t flags) {
212    sp<AMessage> nativeFormat;
213    AMediaFormat_getFormat(format, &nativeFormat);
214    ALOGV("configure with format: %s", nativeFormat->debugString(0).c_str());
215    sp<Surface> surface = NULL;
216    if (window != NULL) {
217        surface = (Surface*) window;
218    }
219
220    return translate_error(mData->mCodec->configure(nativeFormat, surface,
221            crypto ? crypto->mCrypto : NULL, flags));
222}
223
224EXPORT
225media_status_t AMediaCodec_start(AMediaCodec *mData) {
226    status_t ret =  mData->mCodec->start();
227    if (ret != OK) {
228        return translate_error(ret);
229    }
230    mData->mActivityNotification = new AMessage(kWhatActivityNotify, mData->mHandler);
231    mData->mActivityNotification->setInt32("generation", mData->mGeneration);
232    requestActivityNotification(mData);
233    return AMEDIA_OK;
234}
235
236EXPORT
237media_status_t AMediaCodec_stop(AMediaCodec *mData) {
238    media_status_t ret = translate_error(mData->mCodec->stop());
239
240    sp<AMessage> msg = new AMessage(kWhatStopActivityNotifications, mData->mHandler);
241    sp<AMessage> response;
242    msg->postAndAwaitResponse(&response);
243    mData->mActivityNotification.clear();
244
245    return ret;
246}
247
248EXPORT
249media_status_t AMediaCodec_flush(AMediaCodec *mData) {
250    return translate_error(mData->mCodec->flush());
251}
252
253EXPORT
254ssize_t AMediaCodec_dequeueInputBuffer(AMediaCodec *mData, int64_t timeoutUs) {
255    size_t idx;
256    status_t ret = mData->mCodec->dequeueInputBuffer(&idx, timeoutUs);
257    requestActivityNotification(mData);
258    if (ret == OK) {
259        return idx;
260    }
261    return translate_error(ret);
262}
263
264EXPORT
265uint8_t* AMediaCodec_getInputBuffer(AMediaCodec *mData, size_t idx, size_t *out_size) {
266    android::Vector<android::sp<android::ABuffer> > abufs;
267    if (mData->mCodec->getInputBuffers(&abufs) == 0) {
268        size_t n = abufs.size();
269        if (idx >= n) {
270            ALOGE("buffer index %zu out of range", idx);
271            return NULL;
272        }
273        if (out_size != NULL) {
274            *out_size = abufs[idx]->capacity();
275        }
276        return abufs[idx]->data();
277    }
278    ALOGE("couldn't get input buffers");
279    return NULL;
280}
281
282EXPORT
283uint8_t* AMediaCodec_getOutputBuffer(AMediaCodec *mData, size_t idx, size_t *out_size) {
284    android::Vector<android::sp<android::ABuffer> > abufs;
285    if (mData->mCodec->getOutputBuffers(&abufs) == 0) {
286        size_t n = abufs.size();
287        if (idx >= n) {
288            ALOGE("buffer index %zu out of range", idx);
289            return NULL;
290        }
291        if (out_size != NULL) {
292            *out_size = abufs[idx]->capacity();
293        }
294        return abufs[idx]->data();
295    }
296    ALOGE("couldn't get output buffers");
297    return NULL;
298}
299
300EXPORT
301media_status_t AMediaCodec_queueInputBuffer(AMediaCodec *mData,
302        size_t idx, off_t offset, size_t size, uint64_t time, uint32_t flags) {
303
304    AString errorMsg;
305    status_t ret = mData->mCodec->queueInputBuffer(idx, offset, size, time, flags, &errorMsg);
306    return translate_error(ret);
307}
308
309EXPORT
310ssize_t AMediaCodec_dequeueOutputBuffer(AMediaCodec *mData,
311        AMediaCodecBufferInfo *info, int64_t timeoutUs) {
312    size_t idx;
313    size_t offset;
314    size_t size;
315    uint32_t flags;
316    int64_t presentationTimeUs;
317    status_t ret = mData->mCodec->dequeueOutputBuffer(&idx, &offset, &size, &presentationTimeUs,
318            &flags, timeoutUs);
319    requestActivityNotification(mData);
320    switch (ret) {
321        case OK:
322            info->offset = offset;
323            info->size = size;
324            info->flags = flags;
325            info->presentationTimeUs = presentationTimeUs;
326            return idx;
327        case -EAGAIN:
328            return AMEDIACODEC_INFO_TRY_AGAIN_LATER;
329        case android::INFO_FORMAT_CHANGED:
330            return AMEDIACODEC_INFO_OUTPUT_FORMAT_CHANGED;
331        case INFO_OUTPUT_BUFFERS_CHANGED:
332            return AMEDIACODEC_INFO_OUTPUT_BUFFERS_CHANGED;
333        default:
334            break;
335    }
336    return translate_error(ret);
337}
338
339EXPORT
340AMediaFormat* AMediaCodec_getOutputFormat(AMediaCodec *mData) {
341    sp<AMessage> format;
342    mData->mCodec->getOutputFormat(&format);
343    return AMediaFormat_fromMsg(&format);
344}
345
346EXPORT
347media_status_t AMediaCodec_releaseOutputBuffer(AMediaCodec *mData, size_t idx, bool render) {
348    if (render) {
349        return translate_error(mData->mCodec->renderOutputBufferAndRelease(idx));
350    } else {
351        return translate_error(mData->mCodec->releaseOutputBuffer(idx));
352    }
353}
354
355EXPORT
356media_status_t AMediaCodec_releaseOutputBufferAtTime(
357        AMediaCodec *mData, size_t idx, int64_t timestampNs) {
358    ALOGV("render @ %" PRId64, timestampNs);
359    return translate_error(mData->mCodec->renderOutputBufferAndRelease(idx, timestampNs));
360}
361
362EXPORT
363media_status_t AMediaCodec_setOutputSurface(AMediaCodec *mData, ANativeWindow* window) {
364    sp<Surface> surface = NULL;
365    if (window != NULL) {
366        surface = (Surface*) window;
367    }
368    return translate_error(mData->mCodec->setSurface(surface));
369}
370
371//EXPORT
372media_status_t AMediaCodec_setNotificationCallback(AMediaCodec *mData, OnCodecEvent callback,
373        void *userdata) {
374    mData->mCallback = callback;
375    mData->mCallbackUserData = userdata;
376    return AMEDIA_OK;
377}
378
379typedef struct AMediaCodecCryptoInfo {
380        int numsubsamples;
381        uint8_t key[16];
382        uint8_t iv[16];
383        cryptoinfo_mode_t mode;
384        cryptoinfo_pattern_t pattern;
385        size_t *clearbytes;
386        size_t *encryptedbytes;
387} AMediaCodecCryptoInfo;
388
389EXPORT
390media_status_t AMediaCodec_queueSecureInputBuffer(
391        AMediaCodec* codec,
392        size_t idx,
393        off_t offset,
394        AMediaCodecCryptoInfo* crypto,
395        uint64_t time,
396        uint32_t flags) {
397
398    CryptoPlugin::SubSample *subSamples = new CryptoPlugin::SubSample[crypto->numsubsamples];
399    for (int i = 0; i < crypto->numsubsamples; i++) {
400        subSamples[i].mNumBytesOfClearData = crypto->clearbytes[i];
401        subSamples[i].mNumBytesOfEncryptedData = crypto->encryptedbytes[i];
402    }
403
404    CryptoPlugin::Pattern pattern;
405    pattern.mEncryptBlocks = crypto->pattern.encryptBlocks;
406    pattern.mSkipBlocks = crypto->pattern.skipBlocks;
407
408    AString errormsg;
409    status_t err  = codec->mCodec->queueSecureInputBuffer(idx,
410            offset,
411            subSamples,
412            crypto->numsubsamples,
413            crypto->key,
414            crypto->iv,
415            (CryptoPlugin::Mode)crypto->mode,
416            pattern,
417            time,
418            flags,
419            &errormsg);
420    if (err != 0) {
421        ALOGE("queSecureInputBuffer: %s", errormsg.c_str());
422    }
423    delete [] subSamples;
424    return translate_error(err);
425}
426
427
428EXPORT
429void AMediaCodecCryptoInfo_setPattern(AMediaCodecCryptoInfo *info,
430        cryptoinfo_pattern_t *pattern) {
431    info->pattern.encryptBlocks = pattern->encryptBlocks;
432    info->pattern.skipBlocks = pattern->skipBlocks;
433}
434
435EXPORT
436AMediaCodecCryptoInfo *AMediaCodecCryptoInfo_new(
437        int numsubsamples,
438        uint8_t key[16],
439        uint8_t iv[16],
440        cryptoinfo_mode_t mode,
441        size_t *clearbytes,
442        size_t *encryptedbytes) {
443
444    // size needed to store all the crypto data
445    size_t cryptosize = sizeof(AMediaCodecCryptoInfo) + sizeof(size_t) * numsubsamples * 2;
446    AMediaCodecCryptoInfo *ret = (AMediaCodecCryptoInfo*) malloc(cryptosize);
447    if (!ret) {
448        ALOGE("couldn't allocate %zu bytes", cryptosize);
449        return NULL;
450    }
451    ret->numsubsamples = numsubsamples;
452    memcpy(ret->key, key, 16);
453    memcpy(ret->iv, iv, 16);
454    ret->mode = mode;
455    ret->pattern.encryptBlocks = 0;
456    ret->pattern.skipBlocks = 0;
457
458    // clearbytes and encryptedbytes point at the actual data, which follows
459    ret->clearbytes = (size_t*) (ret + 1); // point immediately after the struct
460    ret->encryptedbytes = ret->clearbytes + numsubsamples; // point after the clear sizes
461
462    memcpy(ret->clearbytes, clearbytes, numsubsamples * sizeof(size_t));
463    memcpy(ret->encryptedbytes, encryptedbytes, numsubsamples * sizeof(size_t));
464
465    return ret;
466}
467
468
469EXPORT
470media_status_t AMediaCodecCryptoInfo_delete(AMediaCodecCryptoInfo* info) {
471    free(info);
472    return AMEDIA_OK;
473}
474
475EXPORT
476size_t AMediaCodecCryptoInfo_getNumSubSamples(AMediaCodecCryptoInfo* ci) {
477    return ci->numsubsamples;
478}
479
480EXPORT
481media_status_t AMediaCodecCryptoInfo_getKey(AMediaCodecCryptoInfo* ci, uint8_t *dst) {
482    if (!ci) {
483        return AMEDIA_ERROR_INVALID_OBJECT;
484    }
485    if (!dst) {
486        return AMEDIA_ERROR_INVALID_PARAMETER;
487    }
488    memcpy(dst, ci->key, 16);
489    return AMEDIA_OK;
490}
491
492EXPORT
493media_status_t AMediaCodecCryptoInfo_getIV(AMediaCodecCryptoInfo* ci, uint8_t *dst) {
494    if (!ci) {
495        return AMEDIA_ERROR_INVALID_OBJECT;
496    }
497    if (!dst) {
498        return AMEDIA_ERROR_INVALID_PARAMETER;
499    }
500    memcpy(dst, ci->iv, 16);
501    return AMEDIA_OK;
502}
503
504EXPORT
505cryptoinfo_mode_t AMediaCodecCryptoInfo_getMode(AMediaCodecCryptoInfo* ci) {
506    if (!ci) {
507        return (cryptoinfo_mode_t) AMEDIA_ERROR_INVALID_OBJECT;
508    }
509    return ci->mode;
510}
511
512EXPORT
513media_status_t AMediaCodecCryptoInfo_getClearBytes(AMediaCodecCryptoInfo* ci, size_t *dst) {
514    if (!ci) {
515        return AMEDIA_ERROR_INVALID_OBJECT;
516    }
517    if (!dst) {
518        return AMEDIA_ERROR_INVALID_PARAMETER;
519    }
520    memcpy(dst, ci->clearbytes, sizeof(size_t) * ci->numsubsamples);
521    return AMEDIA_OK;
522}
523
524EXPORT
525media_status_t AMediaCodecCryptoInfo_getEncryptedBytes(AMediaCodecCryptoInfo* ci, size_t *dst) {
526    if (!ci) {
527        return AMEDIA_ERROR_INVALID_OBJECT;
528    }
529    if (!dst) {
530        return AMEDIA_ERROR_INVALID_PARAMETER;
531    }
532    memcpy(dst, ci->encryptedbytes, sizeof(size_t) * ci->numsubsamples);
533    return AMEDIA_OK;
534}
535
536} // extern "C"
537
538