NdkMediaFormat.cpp revision 63141c4356b4f885d3926247df508df3515e41a7 
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 "NdkMediaFormat"
19
20
21#include "NdkMediaFormat.h"
22
23#include <utils/Log.h>
24#include <utils/StrongPointer.h>
25#include <media/stagefright/foundation/ABuffer.h>
26#include <media/stagefright/foundation/AMessage.h>
27#include <media/stagefright/MetaData.h>
28#include <android_runtime/AndroidRuntime.h>
29#include <android_util_Binder.h>
30
31#include <jni.h>
32
33using namespace android;
34
35struct AMediaFormat {
36    sp<AMessage> mFormat;
37    String8 mDebug;
38    KeyedVector<String8, String8> mStringCache;
39};
40
41extern "C" {
42
43// private functions for conversion to/from AMessage
44AMediaFormat* AMediaFormat_fromMsg(const void* data) {
45    ALOGV("private ctor");
46    AMediaFormat* mData = new AMediaFormat();
47    mData->mFormat = *((sp<AMessage>*)data);
48    return mData;
49}
50
51void AMediaFormat_getFormat(const AMediaFormat* mData, void* dest) {
52    *((sp<AMessage>*)dest) = mData->mFormat;
53}
54
55
56/*
57 * public function follow
58 */
59EXPORT
60AMediaFormat *AMediaFormat_new() {
61    ALOGV("ctor");
62    sp<AMessage> msg = new AMessage();
63    return AMediaFormat_fromMsg(&msg);
64}
65
66EXPORT
67media_status_t AMediaFormat_delete(AMediaFormat *mData) {
68    ALOGV("dtor");
69    delete mData;
70    return AMEDIA_OK;
71}
72
73
74EXPORT
75const char* AMediaFormat_toString(AMediaFormat *mData) {
76    sp<AMessage> f = mData->mFormat;
77    String8 ret;
78    int num = f->countEntries();
79    for (int i = 0; i < num; i++) {
80        if (i != 0) {
81            ret.append(", ");
82        }
83        AMessage::Type t;
84        const char *name = f->getEntryNameAt(i, &t);
85        ret.append(name);
86        ret.append(": ");
87        switch (t) {
88            case AMessage::kTypeInt32:
89            {
90                int32_t val;
91                f->findInt32(name, &val);
92                ret.appendFormat("int32(%d)", val);
93                break;
94            }
95            case AMessage::kTypeInt64:
96            {
97                int64_t val;
98                f->findInt64(name, &val);
99                ret.appendFormat("int64(%lld)", val);
100                break;
101            }
102            case AMessage::kTypeSize:
103            {
104                size_t val;
105                f->findSize(name, &val);
106                ret.appendFormat("size_t(%d)", val);
107                break;
108            }
109            case AMessage::kTypeFloat:
110            {
111                float val;
112                f->findFloat(name, &val);
113                ret.appendFormat("float(%f)", val);
114                break;
115            }
116            case AMessage::kTypeDouble:
117            {
118                double val;
119                f->findDouble(name, &val);
120                ret.appendFormat("double(%f)", val);
121                break;
122            }
123            case AMessage::kTypeString:
124            {
125                AString val;
126                f->findString(name, &val);
127                ret.appendFormat("string(%s)", val.c_str());
128                break;
129            }
130            case AMessage::kTypeBuffer:
131            {
132                ret.appendFormat("data");
133                break;
134            }
135            default:
136            {
137                ret.appendFormat("unknown(%d)", t);
138                break;
139            }
140        }
141    }
142    ret.append("}");
143    mData->mDebug = ret;
144    return mData->mDebug.string();
145}
146
147EXPORT
148bool AMediaFormat_getInt32(AMediaFormat* format, const char *name, int32_t *out) {
149    return format->mFormat->findInt32(name, out);
150}
151
152EXPORT
153bool AMediaFormat_getInt64(AMediaFormat* format, const char *name, int64_t *out) {
154    return format->mFormat->findInt64(name, out);
155}
156
157EXPORT
158bool AMediaFormat_getFloat(AMediaFormat* format, const char *name, float *out) {
159    return format->mFormat->findFloat(name, out);
160}
161
162EXPORT
163bool AMediaFormat_getSize(AMediaFormat* format, const char *name, size_t *out) {
164    return format->mFormat->findSize(name, out);
165}
166
167EXPORT
168bool AMediaFormat_getBuffer(AMediaFormat* format, const char *name, void** data, size_t *outsize) {
169    sp<ABuffer> buf;
170    if (format->mFormat->findBuffer(name, &buf)) {
171        *data = buf->data() + buf->offset();
172        *outsize = buf->size();
173        return true;
174    }
175    return false;
176}
177
178EXPORT
179bool AMediaFormat_getString(AMediaFormat* mData, const char *name, const char **out) {
180
181    for (size_t i = 0; i < mData->mStringCache.size(); i++) {
182        if (strcmp(mData->mStringCache.keyAt(i).string(), name) == 0) {
183            mData->mStringCache.removeItemsAt(i, 1);
184            break;
185        }
186    }
187
188    AString tmp;
189    if (mData->mFormat->findString(name, &tmp)) {
190        String8 ret(tmp.c_str());
191        mData->mStringCache.add(String8(name), ret);
192        *out = ret.string();
193        return true;
194    }
195    return false;
196}
197
198EXPORT
199void AMediaFormat_setInt32(AMediaFormat* format, const char *name, int32_t value) {
200    format->mFormat->setInt32(name, value);
201}
202
203EXPORT
204void AMediaFormat_setInt64(AMediaFormat* format, const char *name, int64_t value) {
205    format->mFormat->setInt64(name, value);
206}
207
208EXPORT
209void AMediaFormat_setFloat(AMediaFormat* format, const char* name, float value) {
210    format->mFormat->setFloat(name, value);
211}
212
213EXPORT
214void AMediaFormat_setString(AMediaFormat* format, const char* name, const char* value) {
215    // AMessage::setString() makes a copy of the string
216    format->mFormat->setString(name, value, strlen(value));
217}
218
219EXPORT
220void AMediaFormat_setBuffer(AMediaFormat* format, const char* name, void* data, size_t size) {
221    // the ABuffer(void*, size_t) constructor doesn't take ownership of the data, so create
222    // a new buffer and copy the data into it
223    sp<ABuffer> buf = new ABuffer(size);
224    memcpy(buf->data(), data, size);
225    buf->setRange(0, size);
226    // AMessage::setBuffer() increases the refcount of the buffer
227    format->mFormat->setBuffer(name, buf);
228}
229
230
231EXPORT const char* AMEDIAFORMAT_KEY_AAC_PROFILE = "aac-profile";
232EXPORT const char* AMEDIAFORMAT_KEY_BIT_RATE = "bitrate";
233EXPORT const char* AMEDIAFORMAT_KEY_CHANNEL_COUNT = "channel-count";
234EXPORT const char* AMEDIAFORMAT_KEY_CHANNEL_MASK = "channel-mask";
235EXPORT const char* AMEDIAFORMAT_KEY_COLOR_FORMAT = "color-format";
236EXPORT const char* AMEDIAFORMAT_KEY_DURATION = "durationUs";
237EXPORT const char* AMEDIAFORMAT_KEY_FLAC_COMPRESSION_LEVEL = "flac-compression-level";
238EXPORT const char* AMEDIAFORMAT_KEY_FRAME_RATE = "frame-rate";
239EXPORT const char* AMEDIAFORMAT_KEY_HEIGHT = "height";
240EXPORT const char* AMEDIAFORMAT_KEY_IS_ADTS = "is-adts";
241EXPORT const char* AMEDIAFORMAT_KEY_IS_AUTOSELECT = "is-autoselect";
242EXPORT const char* AMEDIAFORMAT_KEY_IS_DEFAULT = "is-default";
243EXPORT const char* AMEDIAFORMAT_KEY_IS_FORCED_SUBTITLE = "is-forced-subtitle";
244EXPORT const char* AMEDIAFORMAT_KEY_I_FRAME_INTERVAL = "i-frame-interval";
245EXPORT const char* AMEDIAFORMAT_KEY_LANGUAGE = "language";
246EXPORT const char* AMEDIAFORMAT_KEY_MAX_HEIGHT = "max-height";
247EXPORT const char* AMEDIAFORMAT_KEY_MAX_INPUT_SIZE = "max-input-size";
248EXPORT const char* AMEDIAFORMAT_KEY_MAX_WIDTH = "max-width";
249EXPORT const char* AMEDIAFORMAT_KEY_MIME = "mime";
250EXPORT const char* AMEDIAFORMAT_KEY_PUSH_BLANK_BUFFERS_ON_STOP = "push-blank-buffers-on-shutdown";
251EXPORT const char* AMEDIAFORMAT_KEY_REPEAT_PREVIOUS_FRAME_AFTER = "repeat-previous-frame-after";
252EXPORT const char* AMEDIAFORMAT_KEY_SAMPLE_RATE = "sample-rate";
253EXPORT const char* AMEDIAFORMAT_KEY_WIDTH = "width";
254EXPORT const char* AMEDIAFORMAT_KEY_STRIDE = "stride";
255
256
257} // extern "C"
258
259
260