NdkMediaCodec.cpp revision 86aa02ce274826dc80ffa00766b16172c47503fd 
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#define LOG_NDEBUG 0
18#define LOG_TAG "NdkMediaCodec"
19
20#include "NdkMediaCodec.h"
21#include "NdkMediaFormatPriv.h"
22
23#include <utils/Log.h>
24#include <utils/StrongPointer.h>
25#include <gui/Surface.h>
26
27#include <media/ICrypto.h>
28#include <media/stagefright/foundation/ALooper.h>
29#include <media/stagefright/foundation/AMessage.h>
30#include <media/stagefright/foundation/ABuffer.h>
31
32#include <media/stagefright/MediaCodec.h>
33#include <media/stagefright/MediaErrors.h>
34
35using namespace android;
36
37
38static int translate_error(status_t err) {
39    if (err == OK) {
40        return OK;
41    } else if (err == -EAGAIN) {
42        return AMEDIACODEC_INFO_TRY_AGAIN_LATER;
43    }
44    ALOGE("sf error code: %d", err);
45    return -1000;
46}
47
48
49class CodecHandler: public AHandler {
50public:
51    CodecHandler(sp<android::MediaCodec>);
52    virtual void onMessageReceived(const sp<AMessage> &msg);
53};
54
55CodecHandler::CodecHandler(sp<android::MediaCodec>) {
56
57}
58
59void CodecHandler::onMessageReceived(const sp<AMessage> &msg) {
60    ALOGI("handler got message %d", msg->what());
61}
62
63struct AMediaCodec {
64    sp<android::MediaCodec> mCodec;
65    sp<ALooper> mLooper;
66    sp<CodecHandler> mHandler;
67};
68
69extern "C" {
70
71static AMediaCodec * createAMediaCodec(const char *name, bool name_is_type, bool encoder) {
72    AMediaCodec *mData = new AMediaCodec();
73    mData->mLooper = new ALooper;
74    mData->mLooper->setName("NDK MediaCodec_looper");
75    status_t ret = mData->mLooper->start(
76            false,      // runOnCallingThread
77            true,       // canCallJava XXX
78            PRIORITY_FOREGROUND);
79    ALOGV("looper start: %d", ret);
80    if (name_is_type) {
81        mData->mCodec = android::MediaCodec::CreateByType(mData->mLooper, name, encoder);
82    } else {
83        mData->mCodec = android::MediaCodec::CreateByComponentName(mData->mLooper, name);
84    }
85    mData->mHandler = new CodecHandler(mData->mCodec);
86    mData->mLooper->registerHandler(mData->mHandler);
87    return mData;
88}
89
90
91AMediaCodec* AMediaCodec_createCodecByName(const char *name) {
92    return createAMediaCodec(name, false, false);
93}
94
95AMediaCodec* AMediaCodec_createDecoderByType(const char *mime_type) {
96    return createAMediaCodec(mime_type, true, false);
97}
98
99AMediaCodec* AMediaCodec_createEncoderByType(const char *name) {
100    return createAMediaCodec(name, true, true);
101}
102
103int AMediaCodec_delete(AMediaCodec *mData) {
104    if (mData->mCodec != NULL) {
105        mData->mCodec->release();
106        mData->mCodec.clear();
107    }
108
109    if (mData->mLooper != NULL) {
110        mData->mLooper->unregisterHandler(mData->mHandler->id());
111        mData->mLooper->stop();
112        mData->mLooper.clear();
113    }
114    delete mData;
115    return OK;
116}
117
118int AMediaCodec_configure(
119        AMediaCodec *mData, const AMediaFormat* format, ANativeWindow* window, uint32_t flags) {
120    sp<AMessage> nativeFormat;
121    AMediaFormat_getFormat(format, &nativeFormat);
122    ALOGV("configure with format: %s", nativeFormat->debugString(0).c_str());
123    sp<Surface> surface = NULL;
124    if (window != NULL) {
125        surface = (Surface*) window;
126    }
127
128    return translate_error(mData->mCodec->configure(nativeFormat, surface, NULL, flags));
129}
130
131int AMediaCodec_start(AMediaCodec *mData) {
132    return translate_error(mData->mCodec->start());
133}
134
135int AMediaCodec_stop(AMediaCodec *mData) {
136    return translate_error(mData->mCodec->stop());
137}
138
139int AMediaCodec_flush(AMediaCodec *mData) {
140    return translate_error(mData->mCodec->flush());
141}
142
143ssize_t AMediaCodec_dequeueInputBuffer(AMediaCodec *mData, int64_t timeoutUs) {
144    size_t idx;
145    status_t ret = mData->mCodec->dequeueInputBuffer(&idx, timeoutUs);
146    if (ret == OK) {
147        return idx;
148    }
149    return translate_error(ret);
150}
151
152uint8_t* AMediaCodec_getInputBuffer(AMediaCodec *mData, size_t idx, size_t *out_size) {
153    android::Vector<android::sp<android::ABuffer> > abufs;
154    if (mData->mCodec->getInputBuffers(&abufs) == 0) {
155        size_t n = abufs.size();
156        if (idx >= n) {
157            ALOGE("buffer index %d out of range", idx);
158            return NULL;
159        }
160        if (out_size != NULL) {
161            *out_size = abufs[idx]->capacity();
162        }
163        return abufs[idx]->data();
164    }
165    ALOGE("couldn't get input buffers");
166    return NULL;
167}
168
169uint8_t* AMediaCodec_getOutputBuffer(AMediaCodec *mData, size_t idx, size_t *out_size) {
170    android::Vector<android::sp<android::ABuffer> > abufs;
171    if (mData->mCodec->getOutputBuffers(&abufs) == 0) {
172        size_t n = abufs.size();
173        if (idx >= n) {
174            ALOGE("buffer index %d out of range", idx);
175            return NULL;
176        }
177        if (out_size != NULL) {
178            *out_size = abufs[idx]->capacity();
179        }
180        return abufs[idx]->data();
181    }
182    ALOGE("couldn't get output buffers");
183    return NULL;
184}
185
186int AMediaCodec_queueInputBuffer(AMediaCodec *mData,
187        size_t idx, off_t offset, size_t size, uint64_t time, uint32_t flags) {
188
189    AString errorMsg;
190    status_t ret = mData->mCodec->queueInputBuffer(idx, offset, size, time, flags, &errorMsg);
191    return translate_error(ret);
192}
193
194ssize_t AMediaCodec_dequeueOutputBuffer(AMediaCodec *mData,
195        AMediaCodecBufferInfo *info, int64_t timeoutUs) {
196    size_t idx;
197    size_t offset;
198    size_t size;
199    uint32_t flags;
200    int64_t presentationTimeUs;
201    status_t ret = mData->mCodec->dequeueOutputBuffer(&idx, &offset, &size, &presentationTimeUs,
202            &flags, timeoutUs);
203
204    switch (ret) {
205        case OK:
206            info->offset = offset;
207            info->size = size;
208            info->flags = flags;
209            info->presentationTimeUs = presentationTimeUs;
210            return idx;
211        case -EAGAIN:
212            return AMEDIACODEC_INFO_TRY_AGAIN_LATER;
213        case android::INFO_FORMAT_CHANGED:
214            return AMEDIACODEC_INFO_OUTPUT_FORMAT_CHANGED;
215        case INFO_OUTPUT_BUFFERS_CHANGED:
216            return AMEDIACODEC_INFO_OUTPUT_BUFFERS_CHANGED;
217        default:
218            break;
219    }
220    return translate_error(ret);
221}
222
223AMediaFormat* AMediaCodec_getOutputFormat(AMediaCodec *mData) {
224    sp<AMessage> format;
225    mData->mCodec->getOutputFormat(&format);
226    return AMediaFormat_fromMsg(&format);
227}
228
229int AMediaCodec_releaseOutputBuffer(AMediaCodec *mData, size_t idx, bool render) {
230    if (render) {
231        return translate_error(mData->mCodec->renderOutputBufferAndRelease(idx));
232    } else {
233        return translate_error(mData->mCodec->releaseOutputBuffer(idx));
234    }
235}
236
237} // extern "C"
238
239