Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 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_TAG "MediaBuffer" |
| 18 | #include <utils/Log.h> |
| 19 | |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 20 | #include <errno.h> |
| 21 | #include <pthread.h> |
| 22 | #include <stdlib.h> |
| 23 | |
Andreas Huber | f89d780 | 2011-08-04 15:05:17 -0700 | [diff] [blame] | 24 | #include <media/stagefright/foundation/ABuffer.h> |
James Dong | f1d5aa1 | 2012-02-06 23:46:37 -0800 | [diff] [blame] | 25 | #include <media/stagefright/foundation/ADebug.h> |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 26 | #include <media/stagefright/MediaBuffer.h> |
| 27 | #include <media/stagefright/MetaData.h> |
| 28 | |
Jamie Gennis | 6a9da9f | 2010-10-07 14:08:38 -0700 | [diff] [blame] | 29 | #include <ui/GraphicBuffer.h> |
Glenn Kasten | 4dafe5b | 2011-01-12 09:22:07 -0800 | [diff] [blame] | 30 | #include <sys/atomics.h> |
Jamie Gennis | 6a9da9f | 2010-10-07 14:08:38 -0700 | [diff] [blame] | 31 | |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 32 | namespace android { |
| 33 | |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 34 | MediaBuffer::MediaBuffer(void *data, size_t size) |
| 35 | : mObserver(NULL), |
| 36 | mNextBuffer(NULL), |
| 37 | mRefCount(0), |
| 38 | mData(data), |
| 39 | mSize(size), |
| 40 | mRangeOffset(0), |
| 41 | mRangeLength(size), |
| 42 | mOwnsData(false), |
| 43 | mMetaData(new MetaData), |
| 44 | mOriginal(NULL) { |
| 45 | } |
| 46 | |
| 47 | MediaBuffer::MediaBuffer(size_t size) |
| 48 | : mObserver(NULL), |
| 49 | mNextBuffer(NULL), |
| 50 | mRefCount(0), |
| 51 | mData(malloc(size)), |
| 52 | mSize(size), |
| 53 | mRangeOffset(0), |
| 54 | mRangeLength(size), |
| 55 | mOwnsData(true), |
| 56 | mMetaData(new MetaData), |
| 57 | mOriginal(NULL) { |
| 58 | } |
| 59 | |
Jamie Gennis | 6a9da9f | 2010-10-07 14:08:38 -0700 | [diff] [blame] | 60 | MediaBuffer::MediaBuffer(const sp<GraphicBuffer>& graphicBuffer) |
| 61 | : mObserver(NULL), |
| 62 | mNextBuffer(NULL), |
| 63 | mRefCount(0), |
| 64 | mData(NULL), |
| 65 | mSize(1), |
| 66 | mRangeOffset(0), |
| 67 | mRangeLength(mSize), |
| 68 | mGraphicBuffer(graphicBuffer), |
| 69 | mOwnsData(false), |
| 70 | mMetaData(new MetaData), |
| 71 | mOriginal(NULL) { |
| 72 | } |
| 73 | |
Andreas Huber | f89d780 | 2011-08-04 15:05:17 -0700 | [diff] [blame] | 74 | MediaBuffer::MediaBuffer(const sp<ABuffer> &buffer) |
| 75 | : mObserver(NULL), |
| 76 | mNextBuffer(NULL), |
| 77 | mRefCount(0), |
| 78 | mData(buffer->data()), |
| 79 | mSize(buffer->size()), |
| 80 | mRangeOffset(0), |
| 81 | mRangeLength(mSize), |
| 82 | mBuffer(buffer), |
| 83 | mOwnsData(false), |
| 84 | mMetaData(new MetaData), |
| 85 | mOriginal(NULL) { |
| 86 | } |
| 87 | |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 88 | void MediaBuffer::release() { |
| 89 | if (mObserver == NULL) { |
Andreas Huber | 0c89199 | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 90 | CHECK_EQ(mRefCount, 0); |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 91 | delete this; |
| 92 | return; |
| 93 | } |
| 94 | |
Glenn Kasten | 4dafe5b | 2011-01-12 09:22:07 -0800 | [diff] [blame] | 95 | int prevCount = __atomic_dec(&mRefCount); |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 96 | if (prevCount == 1) { |
| 97 | if (mObserver == NULL) { |
| 98 | delete this; |
| 99 | return; |
| 100 | } |
| 101 | |
| 102 | mObserver->signalBufferReturned(this); |
| 103 | } |
Andreas Huber | 0c89199 | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 104 | CHECK(prevCount > 0); |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 105 | } |
| 106 | |
| 107 | void MediaBuffer::claim() { |
Andreas Huber | 0c89199 | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 108 | CHECK(mObserver != NULL); |
| 109 | CHECK_EQ(mRefCount, 1); |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 110 | |
| 111 | mRefCount = 0; |
| 112 | } |
| 113 | |
| 114 | void MediaBuffer::add_ref() { |
Glenn Kasten | 4dafe5b | 2011-01-12 09:22:07 -0800 | [diff] [blame] | 115 | (void) __atomic_inc(&mRefCount); |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 116 | } |
| 117 | |
| 118 | void *MediaBuffer::data() const { |
Jamie Gennis | 6a9da9f | 2010-10-07 14:08:38 -0700 | [diff] [blame] | 119 | CHECK(mGraphicBuffer == NULL); |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 120 | return mData; |
| 121 | } |
| 122 | |
| 123 | size_t MediaBuffer::size() const { |
Jamie Gennis | 6a9da9f | 2010-10-07 14:08:38 -0700 | [diff] [blame] | 124 | CHECK(mGraphicBuffer == NULL); |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 125 | return mSize; |
| 126 | } |
| 127 | |
| 128 | size_t MediaBuffer::range_offset() const { |
| 129 | return mRangeOffset; |
| 130 | } |
| 131 | |
| 132 | size_t MediaBuffer::range_length() const { |
| 133 | return mRangeLength; |
| 134 | } |
| 135 | |
| 136 | void MediaBuffer::set_range(size_t offset, size_t length) { |
Jamie Gennis | 6a9da9f | 2010-10-07 14:08:38 -0700 | [diff] [blame] | 137 | if ((mGraphicBuffer == NULL) && (offset + length > mSize)) { |
Steve Block | 29357bc | 2012-01-06 19:20:56 +0000 | [diff] [blame] | 138 | ALOGE("offset = %d, length = %d, mSize = %d", offset, length, mSize); |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 139 | } |
Jamie Gennis | 6a9da9f | 2010-10-07 14:08:38 -0700 | [diff] [blame] | 140 | CHECK((mGraphicBuffer != NULL) || (offset + length <= mSize)); |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 141 | |
| 142 | mRangeOffset = offset; |
| 143 | mRangeLength = length; |
| 144 | } |
| 145 | |
Jamie Gennis | 6a9da9f | 2010-10-07 14:08:38 -0700 | [diff] [blame] | 146 | sp<GraphicBuffer> MediaBuffer::graphicBuffer() const { |
| 147 | return mGraphicBuffer; |
| 148 | } |
| 149 | |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 150 | sp<MetaData> MediaBuffer::meta_data() { |
| 151 | return mMetaData; |
| 152 | } |
| 153 | |
| 154 | void MediaBuffer::reset() { |
| 155 | mMetaData->clear(); |
| 156 | set_range(0, mSize); |
| 157 | } |
| 158 | |
| 159 | MediaBuffer::~MediaBuffer() { |
James Dong | f1d5aa1 | 2012-02-06 23:46:37 -0800 | [diff] [blame] | 160 | CHECK(mObserver == NULL); |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 161 | |
| 162 | if (mOwnsData && mData != NULL) { |
| 163 | free(mData); |
| 164 | mData = NULL; |
| 165 | } |
| 166 | |
| 167 | if (mOriginal != NULL) { |
| 168 | mOriginal->release(); |
| 169 | mOriginal = NULL; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | void MediaBuffer::setObserver(MediaBufferObserver *observer) { |
Andreas Huber | 0c89199 | 2009-08-26 14:48:20 -0700 | [diff] [blame] | 174 | CHECK(observer == NULL || mObserver == NULL); |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 175 | mObserver = observer; |
| 176 | } |
| 177 | |
| 178 | void MediaBuffer::setNextBuffer(MediaBuffer *buffer) { |
| 179 | mNextBuffer = buffer; |
| 180 | } |
| 181 | |
| 182 | MediaBuffer *MediaBuffer::nextBuffer() { |
| 183 | return mNextBuffer; |
| 184 | } |
| 185 | |
| 186 | int MediaBuffer::refcount() const { |
| 187 | return mRefCount; |
| 188 | } |
| 189 | |
| 190 | MediaBuffer *MediaBuffer::clone() { |
James Dong | f1d5aa1 | 2012-02-06 23:46:37 -0800 | [diff] [blame] | 191 | CHECK(mGraphicBuffer == NULL); |
Jamie Gennis | 6a9da9f | 2010-10-07 14:08:38 -0700 | [diff] [blame] | 192 | |
Andreas Huber | 20111aa | 2009-07-14 16:56:47 -0700 | [diff] [blame] | 193 | MediaBuffer *buffer = new MediaBuffer(mData, mSize); |
| 194 | buffer->set_range(mRangeOffset, mRangeLength); |
| 195 | buffer->mMetaData = new MetaData(*mMetaData.get()); |
| 196 | |
| 197 | add_ref(); |
| 198 | buffer->mOriginal = this; |
| 199 | |
| 200 | return buffer; |
| 201 | } |
| 202 | |
| 203 | } // namespace android |