added transport api, moved http into plugin, fixed problems with cue metadata

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@1231 90c681e8-e032-0410-971d-27865f9a5e38

1 files changed, 361 insertions, 0 deletions

diff --git a/src/plugins/Transports/http/downloader.cpp b/src/plugins/Transports/http/downloader.cpp
new file mode 100644
index 000000000..06653fde9
--- /dev/null
+++ b/src/plugins/Transports/http/downloader.cpp
@@ -0,0 +1,361 @@
+/***************************************************************************
+ *   Copyright (C) 2006-2009 by Ilya Kotov                                 *
+ *   forkotov02@hotmail.ru                                                 *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ ***************************************************************************/
+
+#include <QApplication>
+#include <QStringList>
+#include <QSettings>
+#include <QDir>
+#include <QMap>
+#include <stdint.h>
+#include <stdlib.h>
+#include <qmmp/qmmp.h>
+#include <qmmp/statehandler.h>
+#include "downloader.h"
+
+//curl callbacks
+static size_t curl_write_data(void *data, size_t size, size_t nmemb,
+                              void *pointer)
+{
+    Downloader *dl = (Downloader *)pointer;
+    dl->mutex()->lock ();
+    size_t buf_start = dl->stream()->buf_fill;
+    size_t data_size = size * nmemb;
+    dl->stream()->buf_fill += data_size;
+
+    dl->stream()->buf = (char *)realloc (dl->stream()->buf, dl->stream()->buf_fill);
+    memcpy (dl->stream()->buf + buf_start, data, data_size);
+    dl->mutex()->unlock();
+    dl->checkBuffer();
+    return data_size;
+}
+
+static size_t curl_header(void *data, size_t size, size_t nmemb,
+                          void *pointer)
+{
+    Downloader *dl = (Downloader *)pointer;
+    dl->mutex()->lock ();
+    size_t data_size = size * nmemb;
+    if (data_size < 3)
+    {
+        dl->mutex()->unlock();
+        return data_size;
+    }
+
+    //qDebug("header received: %s", (char*) data);
+    QString str = QString::fromAscii((char *) data, data_size);
+    str = str.trimmed ();
+    if (str.left(4).contains("HTTP"))
+    {
+        qDebug("Downloader: header received");
+        //TODO open metadata socket
+    }
+    else if (str.left(4).contains("ICY"))
+    {
+        qDebug("Downloader: shoutcast header received");
+        //dl->stream()->icy_meta_data = TRUE;
+    }
+    else
+    {
+        QString key = str.left(str.indexOf(":")).trimmed().toLower();
+        QString value = str.right(str.size() - str.indexOf(":") - 1).trimmed().toLower();
+        dl->stream()->header.insert(key, value);
+        qDebug("Downloader: key=%s, value=%s",qPrintable(key),qPrintable(value));
+
+        if (key == "icy-metaint")
+        {
+            dl->stream()->icy_metaint = value.toInt();
+            dl->stream()->icy_meta_data = TRUE;
+        }
+    }
+    dl->mutex()->unlock();
+    return data_size;
+}
+
+int curl_progress(void *pointer, double dltotal, double dlnow, double ultotal, double ulnow)
+{
+    Q_UNUSED(dltotal);
+    Q_UNUSED(dlnow);
+    Q_UNUSED(ultotal);
+    Q_UNUSED(ulnow);
+    Downloader *dl = (Downloader *)pointer;
+    dl->mutex()->lock ();
+    bool aborted = dl->stream()->aborted;
+    dl->mutex()->unlock();
+    if (aborted)
+        return -1;
+    return 0;
+}
+
+Downloader::Downloader(QObject *parent, const QString &url)
+        : QThread(parent)
+{
+    m_url = url;
+    curl_global_init(CURL_GLOBAL_ALL);
+    m_stream.buf_fill = 0;
+    m_stream.buf = 0;
+    m_stream.icy_meta_data = FALSE;
+    m_stream.aborted = TRUE;
+    m_stream.icy_metaint = 0;
+    m_handle = 0;
+    m_metacount = 0;
+}
+
+
+Downloader::~Downloader()
+{
+    abort();
+    curl_global_cleanup();
+    m_stream.aborted = TRUE;
+    m_stream.buf_fill = 0;
+    if (m_stream.buf)
+        free(m_stream.buf);
+
+    m_stream.buf = 0;
+}
+
+
+qint64 Downloader::read(char* data, qint64 maxlen)
+{
+
+    qint64 len = 0;
+    m_mutex.lock();
+    if (!m_stream.icy_meta_data || m_stream.icy_metaint == 0)
+        len = readBuffer(data, maxlen);
+    else
+    {
+        qint64 nread = 0;
+        qint64 to_read;
+        while (maxlen > nread && m_stream.buf_fill > nread)
+        {
+            to_read = qMin<qint64>(m_stream.icy_metaint - m_metacount, maxlen - nread);
+            //to_read = (maxlen - nread);
+            qint64 res = readBuffer(data + nread, to_read);
+            nread += res;
+            m_metacount += res;
+            if (m_metacount == m_stream.icy_metaint)
+            {
+                m_metacount = 0;
+                m_mutex.unlock();
+                readICYMetaData();
+                m_mutex.lock();
+            }
+
+        }
+        len = nread;
+
+    }
+    m_mutex.unlock();
+    return len;
+}
+
+Stream *Downloader::stream()
+{
+    return &m_stream;
+}
+
+QMutex *Downloader::mutex()
+{
+    return &m_mutex;
+}
+
+QString Downloader::contentType()
+{
+    QString content;
+    if (m_stream.header.contains("content-type"))
+        content = m_stream.header.value("content-type");
+    return content;
+}
+
+void Downloader::abort()
+{
+    m_mutex.lock();
+
+    if (m_stream.aborted)
+    {
+        m_mutex.unlock();
+        return;
+    }
+    m_stream.aborted = TRUE;
+    m_mutex.unlock();
+    wait();
+    if (m_handle)
+    {
+        curl_easy_cleanup(m_handle);
+        m_handle = 0;
+    }
+}
+
+int Downloader::bytesAvailable()
+{
+    m_mutex.lock();
+    int b = m_stream.buf_fill;
+    m_mutex.unlock();
+    return b;
+}
+
+void Downloader::run()
+{
+    qDebug("Downloader: starting download thread");
+    m_handle = curl_easy_init();
+    //proxy
+    QSettings settings ( Qmmp::configFile(), QSettings::IniFormat );
+    if (Qmmp::useProxy())
+        curl_easy_setopt(m_handle, CURLOPT_PROXY,
+                         strdup((Qmmp::proxy().host() + ":" +
+                                 QString("%1").arg(Qmmp::proxy().port())).
+                                toLatin1 ().constData ()));
+
+    if (Qmmp::useProxyAuth())
+        curl_easy_setopt(m_handle, CURLOPT_PROXYUSERPWD,
+                         strdup((Qmmp::proxy().userName() + ":" +
+                                 Qmmp::proxy().password()).
+                                toLatin1 ().constData ()));
+
+    // Set url to download
+    curl_easy_setopt(m_handle, CURLOPT_URL, strdup(m_url.toAscii().constData()));
+    // callback for wrting
+    curl_easy_setopt(m_handle, CURLOPT_WRITEFUNCTION, curl_write_data);
+    // Set destination file
+    curl_easy_setopt(m_handle, CURLOPT_WRITEDATA, this);
+    curl_easy_setopt(m_handle, CURLOPT_HEADERDATA, this);
+    curl_easy_setopt(m_handle, CURLOPT_HEADERFUNCTION, curl_header);
+    // Disable SSL
+    curl_easy_setopt(m_handle, CURLOPT_SSL_VERIFYPEER, FALSE);
+    curl_easy_setopt(m_handle, CURLOPT_SSL_VERIFYHOST, 0);
+    // Enable progress meter
+    curl_easy_setopt(m_handle, CURLOPT_NOPROGRESS, 0);
+    curl_easy_setopt(m_handle, CURLOPT_PROGRESSDATA, this);
+    curl_easy_setopt(m_handle, CURLOPT_PROGRESSFUNCTION, curl_progress);
+    // Any kind of authentication
+    curl_easy_setopt(m_handle, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
+    curl_easy_setopt(m_handle, CURLOPT_VERBOSE, 1);
+    // Auto referrer
+    curl_easy_setopt(m_handle, CURLOPT_AUTOREFERER, 1);
+    // Follow redirections
+    curl_easy_setopt(m_handle, CURLOPT_FOLLOWLOCATION, 1);
+    curl_easy_setopt(m_handle, CURLOPT_FAILONERROR, 1);
+    curl_easy_setopt(m_handle, CURLOPT_MAXREDIRS, 15);
+    // user agent
+    QString user_agent = QString("qmmp/%1").arg(Qmmp::strVersion());
+    curl_easy_setopt(m_handle, CURLOPT_USERAGENT, qPrintable(user_agent));
+    curl_easy_setopt(m_handle, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
+
+    struct curl_slist *http200_aliases = curl_slist_append(NULL, "ICY");
+    struct curl_slist *http_headers = curl_slist_append(NULL, "Icy-MetaData: 1");
+    curl_easy_setopt(m_handle, CURLOPT_HTTP200ALIASES, http200_aliases);
+    curl_easy_setopt(m_handle, CURLOPT_HTTPHEADER, http_headers);
+    m_mutex.lock();
+    m_stream.buf_fill = 0;
+    m_stream.buf = 0;
+    m_stream.aborted = FALSE;
+    m_stream.header.clear ();
+    m_ready  = FALSE;
+    int return_code;
+    qDebug("Downloader: starting libcurl");
+    m_mutex.unlock();
+    return_code = curl_easy_perform(m_handle);
+    qDebug("curl_easy_perform %d", return_code);
+    qDebug("Downloader: thread finished");
+}
+
+qint64 Downloader::readBuffer(char* data, qint64 maxlen)
+{
+    if (m_stream.buf_fill > 0 && !m_stream.aborted)
+    {
+        int len = qMin<qint64>(m_stream.buf_fill, maxlen);
+        memcpy(data, m_stream.buf, len);
+        m_stream.buf_fill -= len;
+        memmove(m_stream.buf, m_stream.buf + len, m_stream.buf_fill);
+        return len;
+    }
+    return 0;
+}
+
+const QString &Downloader::title() const
+{
+    return m_title;
+}
+
+void Downloader::checkBuffer()
+{
+    if (m_stream.buf_fill > BUFFER_SIZE && !m_ready)
+    {
+        m_ready  = TRUE;
+        qDebug("Downloader: ready");
+        emit readyRead();
+    }
+    else if (!m_ready)
+    {
+        emit bufferingProgress(100 * m_stream.buf_fill / BUFFER_SIZE);
+        qApp->processEvents();
+    }
+
+}
+
+bool Downloader::isReady()
+{
+    return m_ready;
+}
+
+void Downloader::readICYMetaData()
+{
+    uint8_t packet_size;
+    m_metacount = 0;
+    m_mutex.lock();
+    readBuffer((char *)&packet_size, sizeof(packet_size));
+    if (packet_size != 0)
+    {
+        int size = packet_size * 16;
+        char packet[size];
+        while (m_stream.buf_fill < size && isRunning())
+        {
+            m_mutex.unlock();
+            qApp->processEvents();
+            m_mutex.lock();
+        }
+        readBuffer(packet, size);
+        qDebug("Downloader: ICY metadata: %s", packet);
+        parseICYMetaData(packet);
+    }
+    m_mutex.unlock();
+
+}
+
+void Downloader::parseICYMetaData(char *data)
+{    
+    QString str(data);
+    QStringList list(str.split(";", QString::SkipEmptyParts));
+    foreach(QString line, list)
+    {
+        if (line.contains("StreamTitle="))
+        {
+            line = line.right(line.size() - line.indexOf("=") - 1).trimmed();
+            m_title = line.remove("'");
+            if (!m_title.isEmpty())
+            {
+                QMap<Qmmp::MetaData, QString> metaData;
+                metaData.insert(Qmmp::TITLE, m_title);
+                metaData.insert(Qmmp::URL, m_url);
+                StateHandler::instance()->dispatch(metaData);
+            }
+            break;
+        }
+    }
+}