AnotherPacketSource.cpp revision 53df1a460bcfdd129ca2bc416dee2009e35c042e 
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            return INFO_DISCONTINUITY;
67        }
68
69        return OK;
70    }
71
72    return mEOSResult;
73}
74
75status_t AnotherPacketSource::read(
76        MediaBuffer **out, const ReadOptions *) {
77    *out = NULL;
78
79    Mutex::Autolock autoLock(mLock);
80    while (mEOSResult == OK && mBuffers.empty()) {
81        mCondition.wait(mLock);
82    }
83
84    if (!mBuffers.empty()) {
85        const sp<ABuffer> buffer = *mBuffers.begin();
86        mBuffers.erase(mBuffers.begin());
87
88        int32_t discontinuity;
89        if (buffer->meta()->findInt32("discontinuity", &discontinuity)
90                && discontinuity) {
91            return INFO_DISCONTINUITY;
92        } else {
93            int64_t timeUs;
94            CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
95
96            MediaBuffer *mediaBuffer = new MediaBuffer(buffer->size());
97            mediaBuffer->meta_data()->setInt64(kKeyTime, timeUs);
98
99            // hexdump(buffer->data(), buffer->size());
100
101            memcpy(mediaBuffer->data(), buffer->data(), buffer->size());
102            *out = mediaBuffer;
103            return OK;
104        }
105    }
106
107    return mEOSResult;
108}
109
110void AnotherPacketSource::queueAccessUnit(const sp<ABuffer> &buffer) {
111    int32_t damaged;
112    if (buffer->meta()->findInt32("damaged", &damaged) && damaged) {
113        // LOG(VERBOSE) << "discarding damaged AU";
114        return;
115    }
116
117    int64_t timeUs;
118    CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
119    LOGV("queueAccessUnit timeUs=%lld us (%.2f secs)", timeUs, timeUs / 1E6);
120
121    Mutex::Autolock autoLock(mLock);
122    mBuffers.push_back(buffer);
123    mCondition.signal();
124}
125
126void AnotherPacketSource::queueDiscontinuity(bool formatChange) {
127    sp<ABuffer> buffer = new ABuffer(0);
128    buffer->meta()->setInt32("discontinuity", true);
129
130    if (formatChange) {
131        buffer->meta()->setInt32("format-change", true);
132    }
133
134    Mutex::Autolock autoLock(mLock);
135
136    mBuffers.push_back(buffer);
137    mCondition.signal();
138}
139
140void AnotherPacketSource::clear() {
141    Mutex::Autolock autoLock(mLock);
142    mBuffers.clear();
143    mEOSResult = OK;
144}
145
146void AnotherPacketSource::signalEOS(status_t result) {
147    CHECK(result != OK);
148
149    Mutex::Autolock autoLock(mLock);
150    mEOSResult = result;
151    mCondition.signal();
152}
153
154bool AnotherPacketSource::hasBufferAvailable(status_t *finalResult) {
155    Mutex::Autolock autoLock(mLock);
156    if (!mBuffers.empty()) {
157        return true;
158    }
159
160    *finalResult = mEOSResult;
161    return false;
162}
163
164status_t AnotherPacketSource::nextBufferTime(int64_t *timeUs) {
165    *timeUs = 0;
166
167    Mutex::Autolock autoLock(mLock);
168
169    if (mBuffers.empty()) {
170        return mEOSResult != OK ? mEOSResult : -EWOULDBLOCK;
171    }
172
173    sp<ABuffer> buffer = *mBuffers.begin();
174    CHECK(buffer->meta()->findInt64("timeUs", timeUs));
175
176    return OK;
177}
178
179}  // namespace android
180