ASessionDescription.cpp revision 3856b090cd04ba5dd4a59a12430ed724d5995909
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 74dc468c5f9d72ce54de0070493e9a23efb8907e06Andreas Huber if (line.empty()) { 75dc468c5f9d72ce54de0070493e9a23efb8907e06Andreas Huber i = eolPos + 1; 76dc468c5f9d72ce54de0070493e9a23efb8907e06Andreas Huber continue; 77dc468c5f9d72ce54de0070493e9a23efb8907e06Andreas Huber } 78dc468c5f9d72ce54de0070493e9a23efb8907e06Andreas Huber 79cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (line.size() < 2 || line.c_str()[1] != '=') { 80cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return false; 81cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 82cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 83fc9ac988e08a8b4c42e58999300265989f26f24cAndreas Huber LOGI("%s", line.c_str()); 84fc9ac988e08a8b4c42e58999300265989f26f24cAndreas Huber 85cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber switch (line.c_str()[0]) { 86cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber case 'v': 87cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber { 88cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (strcmp(line.c_str(), "v=0")) { 89cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return false; 90cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 91cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber break; 92cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 93cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 94cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber case 'a': 95cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber case 'b': 96cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber { 97cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber AString key, value; 98cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 99cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber ssize_t colonPos = line.find(":", 2); 100cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (colonPos < 0) { 101cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber key = line; 102cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } else { 103cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber key.setTo(line, 0, colonPos); 104cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 105cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (key == "a=fmtp" || key == "a=rtpmap" 106cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber || key == "a=framesize") { 107cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber ssize_t spacePos = line.find(" ", colonPos + 1); 108cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (spacePos < 0) { 109cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return false; 110cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 111cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 112cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber key.setTo(line, 0, spacePos); 113cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 114cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber colonPos = spacePos; 115cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 116cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 117cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber value.setTo(line, colonPos + 1, line.size() - colonPos - 1); 118cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 119cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 120cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber key.trim(); 121cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber value.trim(); 122cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 1233856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("adding '%s' => '%s'", key.c_str(), value.c_str()); 124cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 125cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mTracks.editItemAt(mTracks.size() - 1).add(key, value); 126cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber break; 127cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 128cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 129cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber case 'm': 130cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber { 1313856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("new section '%s'", 1326e4c5c499999c04c2477b987f9e64f3ff2bf1a06Andreas Huber AString(line, 2, line.size() - 2).c_str()); 133cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 134cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mTracks.push(Attribs()); 135cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber mFormats.push(AString(line, 2, line.size() - 2)); 136cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber break; 137cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 13839ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber 13939ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber default: 14039ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber { 14139ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber AString key, value; 14239ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber 14339ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber ssize_t equalPos = line.find("="); 14439ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber 14539ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber key = AString(line, 0, equalPos + 1); 14639ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber value = AString(line, equalPos + 1, line.size() - equalPos - 1); 14739ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber 14839ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber key.trim(); 14939ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber value.trim(); 15039ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber 1513856b090cd04ba5dd4a59a12430ed724d5995909Steve Block ALOGV("adding '%s' => '%s'", key.c_str(), value.c_str()); 15239ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber 15339ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber mTracks.editItemAt(mTracks.size() - 1).add(key, value); 15439ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber break; 15539ddf8e0f18766f7ba1e3246b774aa6ebd93eea8Andreas Huber } 156cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 157cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 1584579b7d49f6dd4f37e6043e59debfd72d69b8e7bAndreas Huber i = eolPos + 1; 159cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 160cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 161cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return true; 162cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 163cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 164cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huberbool ASessionDescription::isValid() const { 165cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return mIsValid; 166cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 167cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 168cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Hubersize_t ASessionDescription::countTracks() const { 169cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return mTracks.size(); 170cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 171cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 172cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Hubervoid ASessionDescription::getFormat(size_t index, AString *value) const { 173cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GE(index, 0u); 174cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_LT(index, mTracks.size()); 175cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 176cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *value = mFormats.itemAt(index); 177cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 178cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 179cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huberbool ASessionDescription::findAttribute( 180cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber size_t index, const char *key, AString *value) const { 181cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GE(index, 0u); 182cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_LT(index, mTracks.size()); 183cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 184cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber value->clear(); 185cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 186cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber const Attribs &track = mTracks.itemAt(index); 187cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber ssize_t i = track.indexOfKey(AString(key)); 188cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 189cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (i < 0) { 190cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return false; 191cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 192cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 193cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *value = track.valueAt(i); 194cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 195cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return true; 196cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 197cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 198cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Hubervoid ASessionDescription::getFormatType( 199cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber size_t index, unsigned long *PT, 200cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber AString *desc, AString *params) const { 201cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber AString format; 202cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber getFormat(index, &format); 203cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 2044e2ffa400b82559cab2c5717c8dcdff393d334a9Mike Lockwood const char *lastSpacePos = strrchr(format.c_str(), ' '); 205cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK(lastSpacePos != NULL); 206cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 207cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber char *end; 208cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber unsigned long x = strtoul(lastSpacePos + 1, &end, 10); 209cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GT(end, lastSpacePos + 1); 210cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_EQ(*end, '\0'); 211cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 212cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *PT = x; 213cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 214cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber char key[20]; 215cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber sprintf(key, "a=rtpmap:%lu", x); 216cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 217cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK(findAttribute(index, key, desc)); 218cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 219cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber sprintf(key, "a=fmtp:%lu", x); 220cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (!findAttribute(index, key, params)) { 221cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber params->clear(); 222cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 223cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 224cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 225ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huberbool ASessionDescription::getDimensions( 226cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber size_t index, unsigned long PT, 227cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber int32_t *width, int32_t *height) const { 228ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber *width = 0; 229ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber *height = 0; 230ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber 231cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber char key[20]; 232cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber sprintf(key, "a=framesize:%lu", PT); 233cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber AString value; 234ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber if (!findAttribute(index, key, &value)) { 235ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber return false; 236ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber } 237cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 238cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber const char *s = value.c_str(); 239cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber char *end; 240cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *width = strtoul(s, &end, 10); 241cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GT(end, s); 242cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_EQ(*end, '-'); 243cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 244cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber s = end + 1; 245cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *height = strtoul(s, &end, 10); 246cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GT(end, s); 247cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_EQ(*end, '\0'); 248ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber 249ef7af7fec702db2fde72b16dedf9064585e6db77Andreas Huber return true; 250cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 251cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 252cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huberbool ASessionDescription::getDurationUs(int64_t *durationUs) const { 253cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *durationUs = 0; 254cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 255cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK(mIsValid); 256cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 257cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber AString value; 258cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (!findAttribute(0, "a=range", &value)) { 259cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return false; 260cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 261cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 262cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (strncmp(value.c_str(), "npt=", 4)) { 263cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return false; 264cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 265cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 266783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber float from, to; 267783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber if (!parseNTPRange(value.c_str() + 4, &from, &to)) { 268934ca8cb1bcffcf1781a576ca625d2f901e5f0a9Andreas Huber return false; 269934ca8cb1bcffcf1781a576ca625d2f901e5f0a9Andreas Huber } 270cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 271cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *durationUs = (int64_t)((to - from) * 1E6); 272cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 273cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber return true; 274cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 275cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 276cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber// static 277cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Hubervoid ASessionDescription::ParseFormatDesc( 278cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber const char *desc, int32_t *timescale, int32_t *numChannels) { 279cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber const char *slash1 = strchr(desc, '/'); 280cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK(slash1 != NULL); 281cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 282cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber const char *s = slash1 + 1; 283cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber char *end; 284cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber unsigned long x = strtoul(s, &end, 10); 285cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GT(end, s); 286cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK(*end == '\0' || *end == '/'); 287cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 288cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *timescale = x; 289cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *numChannels = 1; 290cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 291cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber if (*end == '/') { 292cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber s = end + 1; 293cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber unsigned long x = strtoul(s, &end, 10); 294cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_GT(end, s); 295cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber CHECK_EQ(*end, '\0'); 296cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 297cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber *numChannels = x; 298cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber } 299cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} 300cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 301783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber// static 302783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huberbool ASessionDescription::parseNTPRange( 303783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber const char *s, float *npt1, float *npt2) { 304783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber if (s[0] == '-') { 305783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber return false; // no start time available. 306783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber } 307783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 308783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber if (!strncmp("now", s, 3)) { 309783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber return false; // no absolute start time available 310783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber } 311783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 312783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber char *end; 313783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber *npt1 = strtof(s, &end); 314783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 315783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber if (end == s || *end != '-') { 316783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber // Failed to parse float or trailing "dash". 317783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber return false; 318783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber } 319783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 320783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber s = end + 1; // skip the dash. 321783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 322783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber if (!strncmp("now", s, 3)) { 323783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber return false; // no absolute end time available 324783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber } 325783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 326783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber *npt2 = strtof(s, &end); 327783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 328783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber if (end == s || *end != '\0') { 329783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber return false; 330783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber } 331783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 332783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber return *npt2 > *npt1; 333783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber} 334783e5cd85d4bd40b1a04dfdfed256c5dcb2525ccAndreas Huber 335cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber} // namespace android 336cf7b9c7aae758ac0b99833915053c63c2ac46e09Andreas Huber 337