NuPlayerDecoder.cpp revision 00f4951088805442e86ff9c2a20ddad79fc2410a 
1/*
2 * Copyright (C) 2010 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 "NuPlayerDecoder"
19#include <utils/Log.h>
20
21#include "NuPlayerDecoder.h"
22
23#include "ESDS.h"
24
25#include <media/stagefright/foundation/ABuffer.h>
26#include <media/stagefright/foundation/ADebug.h>
27#include <media/stagefright/foundation/AMessage.h>
28#include <media/stagefright/ACodec.h>
29#include <media/stagefright/MediaDefs.h>
30#include <media/stagefright/MetaData.h>
31#include <media/stagefright/Utils.h>
32#include <surfaceflinger/Surface.h>
33#include <gui/ISurfaceTexture.h>
34
35namespace android {
36
37NuPlayer::Decoder::Decoder(
38        const sp<AMessage> &notify,
39        const sp<NativeWindowWrapper> &nativeWindow)
40    : mNotify(notify),
41      mNativeWindow(nativeWindow) {
42}
43
44NuPlayer::Decoder::~Decoder() {
45}
46
47void NuPlayer::Decoder::configure(const sp<MetaData> &meta) {
48    CHECK(mCodec == NULL);
49
50    const char *mime;
51    CHECK(meta->findCString(kKeyMIMEType, &mime));
52
53    sp<AMessage> notifyMsg =
54        new AMessage(kWhatCodecNotify, id());
55
56    sp<AMessage> format = makeFormat(meta);
57
58    if (mNativeWindow != NULL) {
59        format->setObject("native-window", mNativeWindow);
60    }
61
62    mCodec = new ACodec;
63    looper()->registerHandler(mCodec);
64
65    mCodec->setNotificationMessage(notifyMsg);
66    mCodec->initiateSetup(format);
67}
68
69void NuPlayer::Decoder::onMessageReceived(const sp<AMessage> &msg) {
70    switch (msg->what()) {
71        case kWhatCodecNotify:
72        {
73            int32_t what;
74            CHECK(msg->findInt32("what", &what));
75
76            if (what == ACodec::kWhatFillThisBuffer) {
77                onFillThisBuffer(msg);
78            } else {
79                sp<AMessage> notify = mNotify->dup();
80                notify->setMessage("codec-request", msg);
81                notify->post();
82            }
83            break;
84        }
85
86        default:
87            TRESPASS();
88            break;
89    }
90}
91
92sp<AMessage> NuPlayer::Decoder::makeFormat(const sp<MetaData> &meta) {
93    CHECK(mCSD.isEmpty());
94
95    const char *mime;
96    CHECK(meta->findCString(kKeyMIMEType, &mime));
97
98    sp<AMessage> msg = new AMessage;
99    msg->setString("mime", mime);
100
101    if (!strncasecmp("video/", mime, 6)) {
102        int32_t width, height;
103        CHECK(meta->findInt32(kKeyWidth, &width));
104        CHECK(meta->findInt32(kKeyHeight, &height));
105
106        msg->setInt32("width", width);
107        msg->setInt32("height", height);
108    } else {
109        CHECK(!strncasecmp("audio/", mime, 6));
110
111        int32_t numChannels, sampleRate;
112        CHECK(meta->findInt32(kKeyChannelCount, &numChannels));
113        CHECK(meta->findInt32(kKeySampleRate, &sampleRate));
114
115        msg->setInt32("channel-count", numChannels);
116        msg->setInt32("sample-rate", sampleRate);
117    }
118
119    int32_t maxInputSize;
120    if (meta->findInt32(kKeyMaxInputSize, &maxInputSize)) {
121        msg->setInt32("max-input-size", maxInputSize);
122    }
123
124    mCSDIndex = 0;
125
126    uint32_t type;
127    const void *data;
128    size_t size;
129    if (meta->findData(kKeyAVCC, &type, &data, &size)) {
130        // Parse the AVCDecoderConfigurationRecord
131
132        const uint8_t *ptr = (const uint8_t *)data;
133
134        CHECK(size >= 7);
135        CHECK_EQ((unsigned)ptr[0], 1u);  // configurationVersion == 1
136        uint8_t profile = ptr[1];
137        uint8_t level = ptr[3];
138
139        // There is decodable content out there that fails the following
140        // assertion, let's be lenient for now...
141        // CHECK((ptr[4] >> 2) == 0x3f);  // reserved
142
143        size_t lengthSize = 1 + (ptr[4] & 3);
144
145        // commented out check below as H264_QVGA_500_NO_AUDIO.3gp
146        // violates it...
147        // CHECK((ptr[5] >> 5) == 7);  // reserved
148
149        size_t numSeqParameterSets = ptr[5] & 31;
150
151        ptr += 6;
152        size -= 6;
153
154        sp<ABuffer> buffer = new ABuffer(1024);
155        buffer->setRange(0, 0);
156
157        for (size_t i = 0; i < numSeqParameterSets; ++i) {
158            CHECK(size >= 2);
159            size_t length = U16_AT(ptr);
160
161            ptr += 2;
162            size -= 2;
163
164            CHECK(size >= length);
165
166            memcpy(buffer->data() + buffer->size(), "\x00\x00\x00\x01", 4);
167            memcpy(buffer->data() + buffer->size() + 4, ptr, length);
168            buffer->setRange(0, buffer->size() + 4 + length);
169
170            ptr += length;
171            size -= length;
172        }
173
174        buffer->meta()->setInt32("csd", true);
175        mCSD.push(buffer);
176
177        buffer = new ABuffer(1024);
178        buffer->setRange(0, 0);
179
180        CHECK(size >= 1);
181        size_t numPictureParameterSets = *ptr;
182        ++ptr;
183        --size;
184
185        for (size_t i = 0; i < numPictureParameterSets; ++i) {
186            CHECK(size >= 2);
187            size_t length = U16_AT(ptr);
188
189            ptr += 2;
190            size -= 2;
191
192            CHECK(size >= length);
193
194            memcpy(buffer->data() + buffer->size(), "\x00\x00\x00\x01", 4);
195            memcpy(buffer->data() + buffer->size() + 4, ptr, length);
196            buffer->setRange(0, buffer->size() + 4 + length);
197
198            ptr += length;
199            size -= length;
200        }
201
202        buffer->meta()->setInt32("csd", true);
203        mCSD.push(buffer);
204
205        msg->setObject("csd", buffer);
206    } else if (meta->findData(kKeyESDS, &type, &data, &size)) {
207        ESDS esds((const char *)data, size);
208        CHECK_EQ(esds.InitCheck(), (status_t)OK);
209
210        const void *codec_specific_data;
211        size_t codec_specific_data_size;
212        esds.getCodecSpecificInfo(
213                &codec_specific_data, &codec_specific_data_size);
214
215        sp<ABuffer> buffer = new ABuffer(codec_specific_data_size);
216
217        memcpy(buffer->data(), codec_specific_data,
218               codec_specific_data_size);
219
220        buffer->meta()->setInt32("csd", true);
221        mCSD.push(buffer);
222    }
223
224    return msg;
225}
226
227void NuPlayer::Decoder::onFillThisBuffer(const sp<AMessage> &msg) {
228    sp<AMessage> reply;
229    CHECK(msg->findMessage("reply", &reply));
230
231#if 0
232    sp<RefBase> obj;
233    CHECK(msg->findObject("buffer", &obj));
234    sp<ABuffer> outBuffer = static_cast<ABuffer *>(obj.get());
235#else
236    sp<ABuffer> outBuffer;
237#endif
238
239    if (mCSDIndex < mCSD.size()) {
240        outBuffer = mCSD.editItemAt(mCSDIndex++);
241        outBuffer->meta()->setInt64("timeUs", 0);
242
243        reply->setObject("buffer", outBuffer);
244        reply->post();
245        return;
246    }
247
248    sp<AMessage> notify = mNotify->dup();
249    notify->setMessage("codec-request", msg);
250    notify->post();
251}
252
253void NuPlayer::Decoder::signalFlush() {
254    if (mCodec != NULL) {
255        mCodec->signalFlush();
256    }
257}
258
259void NuPlayer::Decoder::signalResume() {
260    if (mCodec != NULL) {
261        mCodec->signalResume();
262    }
263}
264
265void NuPlayer::Decoder::initiateShutdown() {
266    if (mCodec != NULL) {
267        mCodec->initiateShutdown();
268    }
269}
270
271}  // namespace android
272
273