NuPlayerDecoderPassThrough.cpp revision 178e506350ef41609daaf307f598ef0bc4f82c71
1/* 2 * Copyright (C) 2014 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 "NuPlayerDecoderPassThrough" 19#include <utils/Log.h> 20#include <inttypes.h> 21 22#include "NuPlayerDecoderPassThrough.h" 23 24#include <media/ICrypto.h> 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/MediaDefs.h> 29#include <media/stagefright/MediaErrors.h> 30 31namespace android { 32 33static const int kMaxPendingBuffers = 10; 34static const int kMaxCachedBytes = 200000; 35 36NuPlayer::DecoderPassThrough::DecoderPassThrough( 37 const sp<AMessage> ¬ify) 38 : Decoder(notify), 39 mNotify(notify), 40 mBufferGeneration(0), 41 mReachedEOS(true), 42 mPendingBuffers(0), 43 mCachedBytes(0), 44 mComponentName("pass through decoder") { 45 mDecoderLooper = new ALooper; 46 mDecoderLooper->setName("NuPlayerDecoderPassThrough"); 47 mDecoderLooper->start(false, false, ANDROID_PRIORITY_AUDIO); 48} 49 50NuPlayer::DecoderPassThrough::~DecoderPassThrough() { 51} 52 53void NuPlayer::DecoderPassThrough::configure(const sp<AMessage> &format) { 54 sp<AMessage> msg = new AMessage(kWhatConfigure, id()); 55 msg->setMessage("format", format); 56 msg->post(); 57} 58 59void NuPlayer::DecoderPassThrough::init() { 60 mDecoderLooper->registerHandler(this); 61} 62 63void NuPlayer::DecoderPassThrough::signalFlush() { 64 (new AMessage(kWhatFlush, id()))->post(); 65} 66 67void NuPlayer::DecoderPassThrough::signalResume() { 68 (new AMessage(kWhatResume, id()))->post(); 69} 70 71void NuPlayer::DecoderPassThrough::initiateShutdown() { 72 (new AMessage(kWhatShutdown, id()))->post(); 73} 74 75bool NuPlayer::DecoderPassThrough::supportsSeamlessFormatChange( 76 const sp<AMessage> & /* targetFormat */) const { 77 return true; 78} 79 80void NuPlayer::DecoderPassThrough::onConfigure(const sp<AMessage> &format) { 81 ALOGV("[%s] onConfigure", mComponentName.c_str()); 82 mPendingBuffers = 0; 83 mCachedBytes = 0; 84 mReachedEOS = false; 85 ++mBufferGeneration; 86 87 requestABuffer(); 88 89 sp<AMessage> notify = mNotify->dup(); 90 notify->setInt32("what", kWhatOutputFormatChanged); 91 notify->setMessage("format", format); 92 notify->post(); 93} 94 95bool NuPlayer::DecoderPassThrough::isStaleReply(const sp<AMessage> &msg) { 96 int32_t generation; 97 CHECK(msg->findInt32("generation", &generation)); 98 return generation != mBufferGeneration; 99} 100 101void NuPlayer::DecoderPassThrough::requestABuffer() { 102 if (mCachedBytes >= kMaxCachedBytes || mReachedEOS) { 103 ALOGV("[%s] mReachedEOS=%d, max pending buffers(%d:%d)", 104 mComponentName.c_str(), (mReachedEOS ? 1 : 0), 105 mPendingBuffers, kMaxPendingBuffers); 106 return; 107 } 108 109 sp<AMessage> reply = new AMessage(kWhatInputBufferFilled, id()); 110 reply->setInt32("generation", mBufferGeneration); 111 112 sp<AMessage> notify = mNotify->dup(); 113 notify->setInt32("what", kWhatFillThisBuffer); 114 notify->setMessage("reply", reply); 115 notify->post(); 116 mPendingBuffers++; 117 118 // pending buffers will already result in requestABuffer 119 if (mPendingBuffers < kMaxPendingBuffers) { 120 sp<AMessage> message = new AMessage(kWhatRequestABuffer, id()); 121 message->setInt32("generation", mBufferGeneration); 122 message->post(); 123 } 124 return; 125} 126 127void android::NuPlayer::DecoderPassThrough::onInputBufferFilled( 128 const sp<AMessage> &msg) { 129 if (mReachedEOS) { 130 return; 131 } 132 133 sp<ABuffer> buffer; 134 msg->findBuffer("buffer", &buffer); 135 if (buffer == NULL) { 136 mReachedEOS = true; 137 138 sp<AMessage> notify = mNotify->dup(); 139 notify->setInt32("what", kWhatEOS); 140 notify->setInt32("err", ERROR_END_OF_STREAM); 141 notify->post(); 142 return; 143 } 144 145 mCachedBytes += buffer->size(); 146 147 sp<AMessage> reply = new AMessage(kWhatBufferConsumed, id()); 148 reply->setInt32("generation", mBufferGeneration); 149 reply->setInt32("size", buffer->size()); 150 151 sp<AMessage> notify = mNotify->dup(); 152 notify->setInt32("what", kWhatDrainThisBuffer); 153 notify->setBuffer("buffer", buffer); 154 notify->setMessage("reply", reply); 155 notify->post(); 156} 157 158void NuPlayer::DecoderPassThrough::onBufferConsumed(int32_t size) { 159 mPendingBuffers--; 160 mCachedBytes -= size; 161 requestABuffer(); 162} 163 164void NuPlayer::DecoderPassThrough::onFlush() { 165 ++mBufferGeneration; 166 167 sp<AMessage> notify = mNotify->dup(); 168 notify->setInt32("what", kWhatFlushCompleted); 169 notify->post(); 170 mPendingBuffers = 0; 171 mCachedBytes = 0; 172 mReachedEOS = false; 173} 174 175void NuPlayer::DecoderPassThrough::onShutdown() { 176 ++mBufferGeneration; 177 178 sp<AMessage> notify = mNotify->dup(); 179 notify->setInt32("what", kWhatShutdownCompleted); 180 notify->post(); 181 mReachedEOS = true; 182} 183 184void NuPlayer::DecoderPassThrough::onMessageReceived(const sp<AMessage> &msg) { 185 ALOGV("[%s] onMessage: %s", mComponentName.c_str(), 186 msg->debugString().c_str()); 187 188 switch (msg->what()) { 189 case kWhatConfigure: 190 { 191 sp<AMessage> format; 192 CHECK(msg->findMessage("format", &format)); 193 onConfigure(format); 194 break; 195 } 196 197 case kWhatRequestABuffer: 198 { 199 if (!isStaleReply(msg)) { 200 requestABuffer(); 201 } 202 203 break; 204 } 205 206 case kWhatInputBufferFilled: 207 { 208 if (!isStaleReply(msg)) { 209 onInputBufferFilled(msg); 210 } 211 break; 212 } 213 214 case kWhatBufferConsumed: 215 { 216 if (!isStaleReply(msg)) { 217 int32_t size; 218 CHECK(msg->findInt32("size", &size)); 219 onBufferConsumed(size); 220 } 221 break; 222 } 223 224 case kWhatFlush: 225 { 226 onFlush(); 227 break; 228 } 229 230 case kWhatResume: 231 { 232 requestABuffer(); 233 break; 234 } 235 236 case kWhatShutdown: 237 { 238 onShutdown(); 239 break; 240 } 241 242 default: 243 TRESPASS(); 244 break; 245 } 246} 247 248} // namespace android 249