NuPlayerDecoder.cpp revision 840667883fd09d44015716d79bc3ac4d60edc0f0 
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 <media/stagefright/foundation/ABuffer.h>
24#include <media/stagefright/foundation/ADebug.h>
25#include <media/stagefright/foundation/AMessage.h>
26#include <media/stagefright/ACodec.h>
27#include <media/stagefright/MediaDefs.h>
28
29namespace android {
30
31NuPlayer::Decoder::Decoder(
32        const sp<AMessage> &notify,
33        const sp<NativeWindowWrapper> &nativeWindow)
34    : mNotify(notify),
35      mNativeWindow(nativeWindow) {
36}
37
38NuPlayer::Decoder::~Decoder() {
39}
40
41void NuPlayer::Decoder::configure(const sp<AMessage> &format) {
42    CHECK(mCodec == NULL);
43
44    AString mime;
45    CHECK(format->findString("mime", &mime));
46
47    sp<AMessage> notifyMsg =
48        new AMessage(kWhatCodecNotify, id());
49
50    mCSDIndex = 0;
51    for (size_t i = 0;; ++i) {
52        sp<ABuffer> csd;
53        if (!format->findBuffer(StringPrintf("csd-%d", i).c_str(), &csd)) {
54            break;
55        }
56
57        mCSD.push(csd);
58    }
59
60    if (mNativeWindow != NULL) {
61        format->setObject("native-window", mNativeWindow);
62    }
63
64    // Current video decoders do not return from OMX_FillThisBuffer
65    // quickly, violating the OpenMAX specs, until that is remedied
66    // we need to invest in an extra looper to free the main event
67    // queue.
68    bool needDedicatedLooper = !strncasecmp(mime.c_str(), "video/", 6);
69
70    mCodec = new ACodec;
71
72    if (needDedicatedLooper && mCodecLooper == NULL) {
73        mCodecLooper = new ALooper;
74        mCodecLooper->setName("NuPlayerDecoder");
75        mCodecLooper->start(false, false, ANDROID_PRIORITY_AUDIO);
76    }
77
78    (needDedicatedLooper ? mCodecLooper : looper())->registerHandler(mCodec);
79
80    mCodec->setNotificationMessage(notifyMsg);
81    mCodec->initiateSetup(format);
82}
83
84void NuPlayer::Decoder::onMessageReceived(const sp<AMessage> &msg) {
85    switch (msg->what()) {
86        case kWhatCodecNotify:
87        {
88            int32_t what;
89            CHECK(msg->findInt32("what", &what));
90
91            if (what == ACodec::kWhatFillThisBuffer) {
92                onFillThisBuffer(msg);
93            } else {
94                sp<AMessage> notify = mNotify->dup();
95                notify->setMessage("codec-request", msg);
96                notify->post();
97            }
98            break;
99        }
100
101        default:
102            TRESPASS();
103            break;
104    }
105}
106
107void NuPlayer::Decoder::onFillThisBuffer(const sp<AMessage> &msg) {
108    sp<AMessage> reply;
109    CHECK(msg->findMessage("reply", &reply));
110
111#if 0
112    sp<ABuffer> outBuffer;
113    CHECK(msg->findBuffer("buffer", &outBuffer));
114#else
115    sp<ABuffer> outBuffer;
116#endif
117
118    if (mCSDIndex < mCSD.size()) {
119        outBuffer = mCSD.editItemAt(mCSDIndex++);
120        outBuffer->meta()->setInt64("timeUs", 0);
121
122        reply->setBuffer("buffer", outBuffer);
123        reply->post();
124        return;
125    }
126
127    sp<AMessage> notify = mNotify->dup();
128    notify->setMessage("codec-request", msg);
129    notify->post();
130}
131
132void NuPlayer::Decoder::signalFlush() {
133    if (mCodec != NULL) {
134        mCodec->signalFlush();
135    }
136}
137
138void NuPlayer::Decoder::signalResume() {
139    if (mCodec != NULL) {
140        mCodec->signalResume();
141    }
142}
143
144void NuPlayer::Decoder::initiateShutdown() {
145    if (mCodec != NULL) {
146        mCodec->initiateShutdown();
147    }
148}
149
150}  // namespace android
151
152