ASessionDescription.cpp revision 783e5cd85d4bd40b1a04dfdfed256c5dcb2525cc
1cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber/* 2cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * Copyright (C) 2010 The Android Open Source Project 3cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * 4cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * you may not use this file except in compliance with the License. 6cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * You may obtain a copy of the License at 7cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * 8cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * 10cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * Unless required by applicable law or agreed to in writing, software 11cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * See the License for the specific language governing permissions and 14cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber * limitations under the License. 15cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber */ 16cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 176e4c5c499999c04c2477b987f9e64f3ff2bf1a06Andreas Huber//#define LOG_NDEBUG 0 186e4c5c499999c04c2477b987f9e64f3ff2bf1a06Andreas Huber#define LOG_TAG "ASessionDescription" 196e4c5c499999c04c2477b987f9e64f3ff2bf1a06Andreas Huber#include <utils/Log.h> 206e4c5c499999c04c2477b987f9e64f3ff2bf1a06Andreas Huber 21cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber#include "ASessionDescription.h" 22cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 23cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber#include <media/stagefright/foundation/ADebug.h> 24cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber#include <media/stagefright/foundation/AString.h> 25cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 26cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber#include <stdlib.h> 27cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 28cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Hubernamespace android { 29cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 30cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas HuberASessionDescription::ASessionDescription() 31cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber : mIsValid(false) { 32cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 33cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 34cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas HuberASessionDescription::~ASessionDescription() { 35cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 36cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 37cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huberbool ASessionDescription::setTo(const void *data, size_t size) { 38cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mIsValid = parse(data, size); 39cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 40cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (!mIsValid) { 41cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mTracks.clear(); 42cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mFormats.clear(); 43cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 44cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 45cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return mIsValid; 46cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 47cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 48cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huberbool ASessionDescription::parse(const void *data, size_t size) { 49cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mTracks.clear(); 50cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mFormats.clear(); 51cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 52cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mTracks.push(Attribs()); 53cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mFormats.push(AString("[root]")); 54cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 55cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber AString desc((const char *)data, size); 56cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 57cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber size_t i = 0; 58cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber for (;;) { 594579b7d49f6dd4f37e6043e59debfd72d69b8e7bAndreas Huber ssize_t eolPos = desc.find("\n", i); 604579b7d49f6dd4f37e6043e59debfd72d69b8e7bAndreas Huber 61cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (eolPos < 0) { 62cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber break; 63cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 64cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 654579b7d49f6dd4f37e6043e59debfd72d69b8e7bAndreas Huber AString line; 664579b7d49f6dd4f37e6043e59debfd72d69b8e7bAndreas Huber if ((size_t)eolPos > i && desc.c_str()[eolPos - 1] == '\r') { 674579b7d49f6dd4f37e6043e59debfd72d69b8e7bAndreas Huber // We accept both '\n' and '\r\n' line endings, if it's 684579b7d49f6dd4f37e6043e59debfd72d69b8e7bAndreas Huber // the latter, strip the '\r' as well. 694579b7d49f6dd4f37e6043e59debfd72d69b8e7bAndreas Huber line.setTo(desc, i, eolPos - i - 1); 704579b7d49f6dd4f37e6043e59debfd72d69b8e7bAndreas Huber } else { 714579b7d49f6dd4f37e6043e59debfd72d69b8e7bAndreas Huber line.setTo(desc, i, eolPos - i); 724579b7d49f6dd4f37e6043e59debfd72d69b8e7bAndreas Huber } 73cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 74cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (line.size() < 2 || line.c_str()[1] != '=') { 75cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return false; 76cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 77cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 78fc9ac988e08a8b4c42e58999300265989f26f24cAndreas Huber LOGI("%s", line.c_str()); 79fc9ac988e08a8b4c42e58999300265989f26f24cAndreas Huber 80cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber switch (line.c_str()[0]) { 81cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber case 'v': 82cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber { 83cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (strcmp(line.c_str(), "v=0")) { 84cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return false; 85cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 86cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber break; 87cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 88cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 89cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber case 'a': 90cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber case 'b': 91cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber { 92cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber AString key, value; 93cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 94cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber ssize_t colonPos = line.find(":", 2); 95cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (colonPos < 0) { 96cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber key = line; 97cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } else { 98cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber key.setTo(line, 0, colonPos); 99cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 100cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (key == "a=fmtp" || key == "a=rtpmap" 101cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber || key == "a=framesize") { 102cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber ssize_t spacePos = line.find(" ", colonPos + 1); 103cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (spacePos < 0) { 104cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return false; 105cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 106cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 107cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber key.setTo(line, 0, spacePos); 108cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 109cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber colonPos = spacePos; 110cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 111cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 112cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber value.setTo(line, colonPos + 1, line.size() - colonPos - 1); 113cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 114cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 115cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber key.trim(); 116cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber value.trim(); 117cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 1186e4c5c499999c04c2477b987f9e64f3ff2bf1a06Andreas Huber LOGV("adding '%s' => '%s'", key.c_str(), value.c_str()); 119cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 120cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mTracks.editItemAt(mTracks.size() - 1).add(key, value); 121cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber break; 122cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 123cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 124cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber case 'm': 125cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber { 1266e4c5c499999c04c2477b987f9e64f3ff2bf1a06Andreas Huber LOGV("new section '%s'", 1276e4c5c499999c04c2477b987f9e64f3ff2bf1a06Andreas Huber AString(line, 2, line.size() - 2).c_str()); 128cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 129cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mTracks.push(Attribs()); 130cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mFormats.push(AString(line, 2, line.size() - 2)); 131cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber break; 132cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 13339ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber 13439ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber default: 13539ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber { 13639ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber AString key, value; 13739ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber 13839ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber ssize_t equalPos = line.find("="); 13939ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber 14039ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber key = AString(line, 0, equalPos + 1); 14139ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber value = AString(line, equalPos + 1, line.size() - equalPos - 1); 14239ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber 14339ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber key.trim(); 14439ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber value.trim(); 14539ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber 1466e4c5c499999c04c2477b987f9e64f3ff2bf1a06Andreas Huber LOGV("adding '%s' => '%s'", key.c_str(), value.c_str()); 14739ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber 14839ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber mTracks.editItemAt(mTracks.size() - 1).add(key, value); 14939ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber break; 15039ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber } 151cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 152cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 1534579b7d49f6dd4f37e6043e59debfd72d69b8e7bAndreas Huber i = eolPos + 1; 154cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 155cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 156cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return true; 157cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 158cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 159cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huberbool ASessionDescription::isValid() const { 160cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return mIsValid; 161cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 162cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 163cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Hubersize_t ASessionDescription::countTracks() const { 164cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return mTracks.size(); 165cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 166cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 167cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Hubervoid ASessionDescription::getFormat(size_t index, AString *value) const { 168cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GE(index, 0u); 169cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_LT(index, mTracks.size()); 170cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 171cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *value = mFormats.itemAt(index); 172cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 173cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 174cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huberbool ASessionDescription::findAttribute( 175cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber size_t index, const char *key, AString *value) const { 176cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GE(index, 0u); 177cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_LT(index, mTracks.size()); 178cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 179cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber value->clear(); 180cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 181cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber const Attribs &track = mTracks.itemAt(index); 182cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber ssize_t i = track.indexOfKey(AString(key)); 183cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 184cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (i < 0) { 185cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return false; 186cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 187cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 188cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *value = track.valueAt(i); 189cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 190cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return true; 191cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 192cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 193cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Hubervoid ASessionDescription::getFormatType( 194cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber size_t index, unsigned long *PT, 195cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber AString *desc, AString *params) const { 196cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber AString format; 197cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber getFormat(index, &format); 198cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 1994e2ffa400b82559cab2c5717c8dcdff393d334a9Mike Lockwood const char *lastSpacePos = strrchr(format.c_str(), ' '); 200cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK(lastSpacePos != NULL); 201cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 202cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber char *end; 203cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber unsigned long x = strtoul(lastSpacePos + 1, &end, 10); 204cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GT(end, lastSpacePos + 1); 205cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_EQ(*end, '\0'); 206cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 207cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *PT = x; 208cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 209cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber char key[20]; 210cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber sprintf(key, "a=rtpmap:%lu", x); 211cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 212cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK(findAttribute(index, key, desc)); 213cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 214cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber sprintf(key, "a=fmtp:%lu", x); 215cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (!findAttribute(index, key, params)) { 216cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber params->clear(); 217cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 218cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 219cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 220ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huberbool ASessionDescription::getDimensions( 221cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber size_t index, unsigned long PT, 222cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber int32_t *width, int32_t *height) const { 223ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber *width = 0; 224ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber *height = 0; 225ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber 226cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber char key[20]; 227cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber sprintf(key, "a=framesize:%lu", PT); 228cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber AString value; 229ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber if (!findAttribute(index, key, &value)) { 230ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber return false; 231ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber } 232cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 233cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber const char *s = value.c_str(); 234cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber char *end; 235cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *width = strtoul(s, &end, 10); 236cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GT(end, s); 237cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_EQ(*end, '-'); 238cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 239cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber s = end + 1; 240cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *height = strtoul(s, &end, 10); 241cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GT(end, s); 242cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_EQ(*end, '\0'); 243ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber 244ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber return true; 245cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 246cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 247cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huberbool ASessionDescription::getDurationUs(int64_t *durationUs) const { 248cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *durationUs = 0; 249cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 250cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK(mIsValid); 251cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 252cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber AString value; 253cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (!findAttribute(0, "a=range", &value)) { 254cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return false; 255cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 256cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 257cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (strncmp(value.c_str(), "npt=", 4)) { 258cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return false; 259cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 260cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 261783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber float from, to; 262783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber if (!parseNTPRange(value.c_str() + 4, &from, &to)) { 263934ca8cb1bcffcf1781a576ca625d2f901e5f0a9Andreas Huber return false; 264934ca8cb1bcffcf1781a576ca625d2f901e5f0a9Andreas Huber } 265cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 266cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *durationUs = (int64_t)((to - from) * 1E6); 267cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 268cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return true; 269cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 270cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 271cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber// static 272cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Hubervoid ASessionDescription::ParseFormatDesc( 273cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber const char *desc, int32_t *timescale, int32_t *numChannels) { 274cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber const char *slash1 = strchr(desc, '/'); 275cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK(slash1 != NULL); 276cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 277cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber const char *s = slash1 + 1; 278cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber char *end; 279cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber unsigned long x = strtoul(s, &end, 10); 280cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GT(end, s); 281cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK(*end == '\0' || *end == '/'); 282cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 283cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *timescale = x; 284cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *numChannels = 1; 285cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 286cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (*end == '/') { 287cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber s = end + 1; 288cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber unsigned long x = strtoul(s, &end, 10); 289cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GT(end, s); 290cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_EQ(*end, '\0'); 291cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 292cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *numChannels = x; 293cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 294cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 295cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 296783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber// static 297783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huberbool ASessionDescription::parseNTPRange( 298783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber const char *s, float *npt1, float *npt2) { 299783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber if (s[0] == '-') { 300783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber return false; // no start time available. 301783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber } 302783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 303783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber if (!strncmp("now", s, 3)) { 304783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber return false; // no absolute start time available 305783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber } 306783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 307783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber char *end; 308783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber *npt1 = strtof(s, &end); 309783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 310783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber if (end == s || *end != '-') { 311783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber // Failed to parse float or trailing "dash". 312783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber return false; 313783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber } 314783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 315783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber s = end + 1; // skip the dash. 316783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 317783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber if (!strncmp("now", s, 3)) { 318783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber return false; // no absolute end time available 319783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber } 320783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 321783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber *npt2 = strtof(s, &end); 322783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 323783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber if (end == s || *end != '\0') { 324783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber return false; 325783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber } 326783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 327783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber return *npt2 > *npt1; 328783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber} 329783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 330cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} // namespace android 331cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 332