AnotherPacketSource.cpp revision f933441648ef6a71dee783d733aac17b9508b452 
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#include "AnotherPacketSource.h"
18
19#include <media/stagefright/foundation/ABuffer.h>
20#include <media/stagefright/foundation/ADebug.h>
21#include <media/stagefright/foundation/AMessage.h>
22#include <media/stagefright/foundation/AString.h>
23#include <media/stagefright/foundation/hexdump.h>
24#include <media/stagefright/MediaBuffer.h>
25#include <media/stagefright/MediaDefs.h>
26#include <media/stagefright/MetaData.h>
27#include <utils/Vector.h>
28
29namespace android {
30
31AnotherPacketSource::AnotherPacketSource(const sp<MetaData> &meta)
32    : mFormat(meta),
33      mEOSResult(OK) {
34}
35
36AnotherPacketSource::~AnotherPacketSource() {
37}
38
39status_t AnotherPacketSource::start(MetaData *params) {
40    return OK;
41}
42
43status_t AnotherPacketSource::stop() {
44    return OK;
45}
46
47sp<MetaData> AnotherPacketSource::getFormat() {
48    return mFormat;
49}
50
51status_t AnotherPacketSource::dequeueAccessUnit(sp<ABuffer> *buffer) {
52    buffer->clear();
53
54    Mutex::Autolock autoLock(mLock);
55    while (mEOSResult == OK && mBuffers.empty()) {
56        mCondition.wait(mLock);
57    }
58
59    if (!mBuffers.empty()) {
60        *buffer = *mBuffers.begin();
61        mBuffers.erase(mBuffers.begin());
62
63        int32_t discontinuity;
64        if ((*buffer)->meta()->findInt32("discontinuity", &discontinuity)
65                && discontinuity) {
66            buffer->clear();
67
68            return INFO_DISCONTINUITY;
69        }
70
71        return OK;
72    }
73
74    return mEOSResult;
75}
76
77status_t AnotherPacketSource::read(
78        MediaBuffer **out, const ReadOptions *) {
79    *out = NULL;
80
81    Mutex::Autolock autoLock(mLock);
82    while (mEOSResult == OK && mBuffers.empty()) {
83        mCondition.wait(mLock);
84    }
85
86    if (!mBuffers.empty()) {
87        const sp<ABuffer> buffer = *mBuffers.begin();
88        mBuffers.erase(mBuffers.begin());
89
90        int32_t discontinuity;
91        if (buffer->meta()->findInt32("discontinuity", &discontinuity)
92                && discontinuity) {
93            return INFO_DISCONTINUITY;
94        } else {
95            int64_t timeUs;
96            CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
97
98            MediaBuffer *mediaBuffer = new MediaBuffer(buffer->size());
99            mediaBuffer->meta_data()->setInt64(kKeyTime, timeUs);
100
101            // hexdump(buffer->data(), buffer->size());
102
103            memcpy(mediaBuffer->data(), buffer->data(), buffer->size());
104            *out = mediaBuffer;
105            return OK;
106        }
107    }
108
109    return mEOSResult;
110}
111
112void AnotherPacketSource::queueAccessUnit(const sp<ABuffer> &buffer) {
113    int32_t damaged;
114    if (buffer->meta()->findInt32("damaged", &damaged) && damaged) {
115        // LOG(VERBOSE) << "discarding damaged AU";
116        return;
117    }
118
119    int64_t timeUs;
120    CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
121    LOGV("queueAccessUnit timeUs=%lld us (%.2f secs)", timeUs, timeUs / 1E6);
122
123    Mutex::Autolock autoLock(mLock);
124    mBuffers.push_back(buffer);
125    mCondition.signal();
126}
127
128void AnotherPacketSource::queueDiscontinuity() {
129    sp<ABuffer> buffer = new ABuffer(0);
130    buffer->meta()->setInt32("discontinuity", true);
131
132    Mutex::Autolock autoLock(mLock);
133
134    mBuffers.push_back(buffer);
135    mCondition.signal();
136}
137
138void AnotherPacketSource::clear() {
139    Mutex::Autolock autoLock(mLock);
140    mBuffers.clear();
141    mEOSResult = OK;
142}
143
144void AnotherPacketSource::signalEOS(status_t result) {
145    CHECK(result != OK);
146
147    Mutex::Autolock autoLock(mLock);
148    mEOSResult = result;
149    mCondition.signal();
150}
151
152bool AnotherPacketSource::hasBufferAvailable(status_t *finalResult) {
153    Mutex::Autolock autoLock(mLock);
154    if (!mBuffers.empty()) {
155        return true;
156    }
157
158    *finalResult = mEOSResult;
159    return false;
160}
161
162status_t AnotherPacketSource::nextBufferTime(int64_t *timeUs) {
163    *timeUs = 0;
164
165    Mutex::Autolock autoLock(mLock);
166
167    if (mBuffers.empty()) {
168        return mEOSResult != OK ? mEOSResult : -EWOULDBLOCK;
169    }
170
171    sp<ABuffer> buffer = *mBuffers.begin();
172    CHECK(buffer->meta()->findInt64("timeUs", timeUs));
173
174    return OK;
175}
176
177}  // namespace android
178