C++ AString::setTo方法代码示例

status_t M3UParser::parse(const void *_data, size_t size) {
    int32_t lineNo = 0;

    sp<AMessage> itemMeta;

    const char *data = (const char *)_data;
    size_t offset = 0;
    while (offset < size) {
        size_t offsetLF = offset;
        while (offsetLF < size && data[offsetLF] != '\n') {
            ++offsetLF;
        }
        if (offsetLF >= size) {
            break;
        }

        AString line;
        if (offsetLF > offset && data[offsetLF - 1] == '\r') {
            line.setTo(&data[offset], offsetLF - offset - 1);
        } else {
            line.setTo(&data[offset], offsetLF - offset);
        }

        // LOGI("#%s#", line.c_str());

        if (line.empty()) {
            offset = offsetLF + 1;
            continue;
        }

        if (lineNo == 0 && line == "#EXTM3U") {
            mIsExtM3U = true;
        }

        if (mIsExtM3U) {
            status_t err = OK;

            if (line.startsWith("#EXT-X-TARGETDURATION")) {
                if (mIsVariantPlaylist) {
                    return ERROR_MALFORMED;
                }
                err = parseMetaData(line, &mMeta, "target-duration");
            } else if (line.startsWith("#EXT-X-MEDIA-SEQUENCE")) {
                if (mIsVariantPlaylist) {
                    return ERROR_MALFORMED;
                }
                err = parseMetaData(line, &mMeta, "media-sequence");
            } else if (line.startsWith("#EXT-X-ENDLIST")) {
                mIsComplete = true;
            } else if (line.startsWith("#EXTINF")) {
                if (mIsVariantPlaylist) {
                    return ERROR_MALFORMED;
                }
                err = parseMetaData(line, &itemMeta, "duration");
            } else if (line.startsWith("#EXT-X-DISCONTINUITY")) {
                if (mIsVariantPlaylist) {
                    return ERROR_MALFORMED;
                }
                if (itemMeta == NULL) {
                    itemMeta = new AMessage;
                }
                itemMeta->setInt32("discontinuity", true);
            } else if (line.startsWith("#EXT-X-STREAM-INF")) {
                if (mMeta != NULL) {
                    return ERROR_MALFORMED;
                }
                mIsVariantPlaylist = true;
                err = parseStreamInf(line, &itemMeta);
            }

            if (err != OK) {
                return err;
            }
        }

        if (!line.startsWith("#")) {
            if (!mIsVariantPlaylist) {
                int32_t durationSecs;
                if (itemMeta == NULL
                        || !itemMeta->findInt32("duration", &durationSecs)) {
                    return ERROR_MALFORMED;
                }
            }

            mItems.push();
            Item *item = &mItems.editItemAt(mItems.size() - 1);

            CHECK(MakeURL(mBaseURI.c_str(), line.c_str(), &item->mURI));

            item->mMeta = itemMeta;

            itemMeta.clear();
        }

        offset = offsetLF + 1;
        ++lineNo;
    }

    return OK;
}

bool ASessionDescription::parse(const void *data, size_t size) {
    mTracks.clear();
    mFormats.clear();

    mTracks.push(Attribs());
    mFormats.push(AString("[root]"));

    AString desc((const char *)data, size);

    size_t i = 0;
    for (;;) {
        ssize_t eolPos = desc.find("\n", i);

        if (eolPos < 0) {
            break;
        }

        AString line;
        if ((size_t)eolPos > i && desc.c_str()[eolPos - 1] == '\r') {
            // We accept both '\n' and '\r\n' line endings, if it's
            // the latter, strip the '\r' as well.
            line.setTo(desc, i, eolPos - i - 1);
        } else {
            line.setTo(desc, i, eolPos - i);
        }

        if (line.empty()) {
            i = eolPos + 1;
            continue;
        }

        if (line.size() < 2 || line.c_str()[1] != '=') {
            return false;
        }

        ALOGI("%s", line.c_str());

        switch (line.c_str()[0]) {
            case 'v':
            {
                if (strcmp(line.c_str(), "v=0")) {
                    return false;
                }
                break;
            }

            case 'a':
            case 'b':
            {
                AString key, value;

                ssize_t colonPos = line.find(":", 2);
                if (colonPos < 0) {
                    key = line;
                } else {
                    key.setTo(line, 0, colonPos);

                    if (key == "a=fmtp" || key == "a=rtpmap"
                            || key == "a=framesize") {
                        ssize_t spacePos = line.find(" ", colonPos + 1);
                        if (spacePos < 0) {
                            return false;
                        }

                        key.setTo(line, 0, spacePos);

                        colonPos = spacePos;
                    }

                    value.setTo(line, colonPos + 1, line.size() - colonPos - 1);
                }

                key.trim();
                value.trim();

                ALOGV("adding '%s' => '%s'", key.c_str(), value.c_str());

                mTracks.editItemAt(mTracks.size() - 1).add(key, value);
                break;
            }

            case 'm':
            {
                ALOGV("new section '%s'",
                     AString(line, 2, line.size() - 2).c_str());

                mTracks.push(Attribs());
                mFormats.push(AString(line, 2, line.size() - 2));
                break;
            }

            default:
            {
                AString key, value;

                ssize_t equalPos = line.find("=");

                key = AString(line, 0, equalPos + 1);
                value = AString(line, equalPos + 1, line.size() - equalPos - 1);

//.........这里部分代码省略.........

int main(int argc, char **argv) {
    using namespace android;

	//负责打开Binder驱动，建立线程池，让其进程里面的所有线程都能通过Binder通信 http://blog.csdn.net/pi9nc/article/details/9749325
	//每个线程都有一个IPCThreadState实例登记在Linux线程的上下文附属数据中，主要负责Binder的读取，写入和请求处理框架
    ProcessState::self()->startThreadPool();

	//基类DataSource提供了一些分离器
    DataSource::RegisterDefaultSniffers();

    AString connectToHost;
    int32_t connectToPort = -1;
    AString uri;

    AString listenOnAddr;
    int32_t listenOnPort = -1;

    int res;

	//解析参数
    while ((res = getopt(argc, argv, "hc:l:u:")) >= 0) {
        switch (res) {
    	
		//建立连接，设置默认端口        
		case 'c':
            {

                const char *colonPos = strrchr(optarg, ':');

                if (colonPos == NULL) {
                    connectToHost = optarg;
                    connectToPort = WifiDisplaySource::kWifiDisplayDefaultPort;   //kWifiDisplayDefaultPort = 7236;
                } else {
                    connectToHost.setTo(optarg, colonPos - optarg);

                    char *end;
                    connectToPort = strtol(colonPos + 1, &end, 10);

                    if (*end != '\0' || end == colonPos + 1
                            || connectToPort < 1 || connectToPort > 65535) {
                        fprintf(stderr, "Illegal port specified.\n");
                        exit(1);
                    }
                }
                break;
            }

            case 'u':
            {
                uri = optarg;
                break;
            }

            case 'l':
            {
                const char *colonPos = strrchr(optarg, ':');

                if (colonPos == NULL) {
                    listenOnAddr = optarg;
                    listenOnPort = WifiDisplaySource::kWifiDisplayDefaultPort;   //kWifiDisplayDefaultPort = 7236;
                } else {
                    listenOnAddr.setTo(optarg, colonPos - optarg);

                    char *end;
                    listenOnPort = strtol(colonPos + 1, &end, 10);

                    if (*end != '\0' || end == colonPos + 1
                            || listenOnPort < 1 || listenOnPort > 65535) {
                        fprintf(stderr, "Illegal port specified.\n");
                        exit(1);
                    }
                }
                break;
            }

            case '?':
            case 'h':
            default:
                usage(argv[0]);
                exit(1);
        }
    }

    if (connectToPort >= 0 && listenOnPort >= 0) {
        fprintf(stderr,
                "You can connect to a source or create one, "
                "but not both at the same time.\n");
        exit(1);
    }

    if (listenOnPort >= 0) {
        createSource(listenOnAddr, listenOnPort);
        exit(0);
    }

    if (connectToPort < 0 && uri.empty()) {
        fprintf(stderr,
                "You need to select either source host or uri.\n");

        exit(1);
//.........这里部分代码省略.........

bool ASessionDescription::parse(const void *data, size_t size) {
    mTracks.clear();
    mFormats.clear();

    mTracks.push(Attribs());
    mFormats.push(AString("[root]"));

    AString desc((const char *)data, size);

#ifndef ANDROID_DEFAULT_CODE 
    int rtpmapNum = 0;
    bool unsupported = false;
#endif // #ifndef ANDROID_DEFAULT_CODE
    size_t i = 0;
    for (;;) {
#ifndef ANDROID_DEFAULT_CODE 
        if (i >= desc.size()) {
            break;
        }
#endif // #ifndef ANDROID_DEFAULT_CODE
        ssize_t eolPos = desc.find("\n", i);

        if (eolPos < 0) {
#ifndef ANDROID_DEFAULT_CODE 
            eolPos = desc.size();
#else
            break;
#endif // #ifndef ANDROID_DEFAULT_CODE
        }

        AString line;
        if ((size_t)eolPos > i && desc.c_str()[eolPos - 1] == '\r') {
            // We accept both '\n' and '\r\n' line endings, if it's
            // the latter, strip the '\r' as well.
            line.setTo(desc, i, eolPos - i - 1);
        } else {
            line.setTo(desc, i, eolPos - i);
        }

        if (line.empty()) {
            i = eolPos + 1;
            continue;
        }

        if (line.size() < 2 || line.c_str()[1] != '=') {
            return false;
        }

#ifndef ANDROID_DEFAULT_CODE 
        if (unsupported && line.c_str()[0] != 'm') {
            LOGI("skip %s in unsupported media description", line.c_str());
            i = eolPos + 1;
            continue;
        } else
#endif // #ifndef ANDROID_DEFAULT_CODE
        LOGI("%s", line.c_str());

        switch (line.c_str()[0]) {
            case 'v':
            {
                if (strcmp(line.c_str(), "v=0")) {
                    return false;
                }
                break;
            }

            case 'a':
            case 'b':
            {
                AString key, value;

                ssize_t colonPos = line.find(":", 2);
                if (colonPos < 0) {
                    key = line;
                } else {
                    key.setTo(line, 0, colonPos);

                    if (key == "a=fmtp" || key == "a=rtpmap"
                            || key == "a=framesize") {
                        ssize_t spacePos = line.find(" ", colonPos + 1);
                        if (spacePos < 0) {
                            return false;
                        }

#ifndef ANDROID_DEFAULT_CODE 
                        if (key == "a=rtpmap") {
                            if (rtpmapNum > 0) {
                                mTracks.pop();
                                mFormats.pop();
                                unsupported = true;
                                LOGW("ASessionDescription: multiple rtpmap"
                                        " for one media is not supported yet");
                                break;
                            } else {
                                rtpmapNum++;
                            }
                        }
#endif // #ifndef ANDROID_DEFAULT_CODE
                        key.setTo(line, 0, spacePos);

//.........这里部分代码省略.........

int main(int argc, char **argv) {
    using namespace android;

    ProcessState::self()->startThreadPool();

    DataSource::RegisterDefaultSniffers();

    AString connectToHost;
    int32_t connectToPort = -1;
    AString uri;

    AString listenOnAddr;
    int32_t listenOnPort = -1;

    AString path;
///M: @{
    int     isFastSetup = 0;
///@}

    int res;
    while ((res = getopt(argc, argv, "hpic:b:l:t:f:r:u:e:s:d")) >= 0) {
        switch (res) {
            case 'b':
            {
                const char *colonPos = strrchr(optarg, ':');

                if (colonPos == NULL) {
                    connectToHost = optarg;
                    connectToPort = WFD_UIBC_SERVER_PORT;
                } else {
                    connectToHost.setTo(optarg, colonPos - optarg);

                    char *end;
                    connectToPort = strtol(colonPos + 1, &end, 10);

                    if (*end != '\0' || end == colonPos + 1
                            || connectToPort < 1 || connectToPort > 65535) {
                        fprintf(stderr, "Illegal port specified.\n");
                        exit(1);
                    }
                }
                connectUibc(connectToHost.c_str(), connectToPort);
                exit(1);
                break;
            }
            case 't':
            {
                isFastSetup = 1;
            }

            case 'f':
            {
                path = optarg;
                break;
            }            

            case 'u':
            {
                uri = optarg;
                break;
            }

            case 'l':
            {
                const char *colonPos = strrchr(optarg, ':');

                if (colonPos == NULL) {
                    listenOnAddr = optarg;
                    listenOnPort = WifiDisplaySource::kWifiDisplayDefaultPort;
                } else {
                    listenOnAddr.setTo(optarg, colonPos - optarg);

                    char *end;
                    listenOnPort = strtol(colonPos + 1, &end, 10);

                    if (*end != '\0' || end == colonPos + 1
                            || listenOnPort < 1 || listenOnPort > 65535) {
                        fprintf(stderr, "Illegal port specified.\n");
                        exit(1);
                    }
                }
                break;
            }
            

            case 'r':
            {
                enableFastRtpRemoteDisplay(optarg);
                exit(0);
                break;
            }

            case 'e':
            {
                enableDisableRemoteDisplay(optarg);
                exit(0);
                break;
            }

            case 'd':
//.........这里部分代码省略.........