Added an alternative (tricky) codec to compile DCC_VIDEO without OGG_THEORA

git-svn-id: https://svn.kvirc.de/svn/trunk/kvirc@3670 17fca916-40b9-46aa-a4ea-0a15b648b75c

4 files changed, 107 insertions, 7 deletions

diff --git a/src/modules/dcc/codec.cpp b/src/modules/dcc/codec.cpp
index 23f5b5676..ffcbf330a 100644
--- a/src/modules/dcc/codec.cpp
+++ b/src/modules/dcc/codec.cpp
@@ -24,6 +24,11 @@
 
 #include "codec.h"
 
+
+#include <QImage>
+#include <QByteArray>
+#include <QBuffer>
+
 KviDccVoiceCodec::KviDccVoiceCodec()
 {
 }
@@ -127,6 +132,83 @@ const char * KviDccVideoCodec::name()
 	return m_szName.ptr();
 }
 
+KviDccVideoSJpegCodec::KviDccVideoSJpegCodec()
+: KviDccVideoCodec()
+{
+	m_szName = "sjpeg";
+}
+
+KviDccVideoSJpegCodec::~KviDccVideoSJpegCodec()
+{
+}
+
+void KviDccVideoSJpegCodec::encodeVideo(KviDataBuffer * videoSignal,KviDataBuffer * stream)
+{
+	
+	if(videoSignal->size() < 1) return;
+
+	QImage img(videoSignal->data(), 320, 240, 1280, QImage::Format_ARGB32);
+	QByteArray ba;
+	QBuffer buffer(&ba);
+	buffer.open(QIODevice::WriteOnly);
+	//0 to obtain small compressed files,
+	//100 for large uncompressed files,
+	//and -1 (the default) to use the default settings.
+	img.save(&buffer, "JPEG", 20);
+	if(ba.size() > 0)
+	{
+		stream->append((const unsigned char*)ba.data(),ba.size());
+        }
+	videoSignal->clear();
+}
+
+void KviDccVideoSJpegCodec::encodeAudio(KviDataBuffer * audioSignal,KviDataBuffer * stream)
+{
+	//no audio support
+	Q_UNUSED(stream);
+	if(audioSignal->size() < 1) return;
+
+	audioSignal->clear();
+	return;
+}
+
+void KviDccVideoSJpegCodec::decode(KviDataBuffer * stream,KviDataBuffer * signal)
+{
+	static unsigned const char jpg_magic_init[4] = { 0xFF, 0xD8, 0xFF, 0xE0}; //SOI + APP0
+	static unsigned const char jpg_magic_end[2] = { 0xFF, 0xD9}; //EOI
+
+	if(stream->size() < 1)return;
+
+	int start = stream->find(jpg_magic_init, 4);
+	int end = stream->find(jpg_magic_end, 2);
+	if(start != -1 && end != -1)
+	{
+		QImage img;
+		//remove junk before jpeg start
+		stream->remove(start);
+		int len = end - start + 1;
+		
+		img.loadFromData(stream->data(), stream->size());
+		if(!img.isNull())
+		{
+			signal->clear();
+			signal->append(img.bits(),img.numBytes());
+		}
+		stream->remove(len);
+	}
+}
+
+int KviDccVideoSJpegCodec::encodedFrameSize()
+{
+	return 0;
+}
+
+int KviDccVideoSJpegCodec::decodedFrameSize()
+{
+	return 0;
+}
+
+
 #ifndef COMPILE_DISABLE_OGG_THEORA
 KviDccVideoTheoraCodec::KviDccVideoTheoraCodec()
 : KviDccVideoCodec()
diff --git a/src/modules/dcc/codec.h b/src/modules/dcc/codec.h
index a240f3f35..da3c24d18 100644
--- a/src/modules/dcc/codec.h
+++ b/src/modules/dcc/codec.h
@@ -71,6 +71,19 @@ public:
 	virtual int decodedFrameSize();
 };
 
+class KviDccVideoSJpegCodec : public KviDccVideoCodec
+{
+public:
+	KviDccVideoSJpegCodec();
+	virtual ~KviDccVideoSJpegCodec();
+public:
+	virtual void encodeVideo(KviDataBuffer * videoSignal, KviDataBuffer * stream);
+	virtual void encodeAudio(KviDataBuffer * audioSignal, KviDataBuffer * stream);
+	virtual void decode(KviDataBuffer * stream,KviDataBuffer * signal);
+	virtual int encodedFrameSize();
+	virtual int decodedFrameSize();
+};
+
 #ifndef COMPILE_DISABLE_OGG_THEORA
 class KviDccVideoTheoraCodec : public KviDccVideoCodec
 {
diff --git a/src/modules/dcc/libkvidcc.cpp b/src/modules/dcc/libkvidcc.cpp
index 4f6f467b0..6d5242f88 100644
--- a/src/modules/dcc/libkvidcc.cpp
+++ b/src/modules/dcc/libkvidcc.cpp
@@ -1202,7 +1202,7 @@ static bool dcc_kvs_cmd_video(KviKvsModuleCommandCall * c)
 
 	if(!dcc_kvs_parse_default_parameters(d,c))return false;
 
-	d->szCodec = "jpeg";
+	d->szCodec = "sjpeg";
 
 	if(KviKvsVariant * pCodec = c->switches()->find('g',"codec"))
 	{
@@ -1211,8 +1211,10 @@ static bool dcc_kvs_cmd_video(KviKvsModuleCommandCall * c)
 
 		if(!kvi_dcc_video_is_valid_codec(szCodec.toUtf8().data()))
 		{
-			c->warning(__tr2qs_ctx("Invalid codec specified, defaulting to 'jpeg'","dcc"));
-			d->szCodec = "jpeg";
+			c->warning(__tr2qs_ctx("Invalid codec specified, defaulting to 'sjpeg'","dcc"));
+			d->szCodec = "sjpeg";
+		} else {
+			d->szCodec = szCodec;
 		}
 	}
 
diff --git a/src/modules/dcc/video.cpp b/src/modules/dcc/video.cpp
index 11d2c6ad5..310deb890 100644
--- a/src/modules/dcc/video.cpp
+++ b/src/modules/dcc/video.cpp
@@ -85,16 +85,19 @@ extern KviDccBroker * g_pDccBroker;
 
 bool kvi_dcc_video_is_valid_codec(const char * codecName)
 {
-	if(kvi_strEqualCI("jpeg",codecName))return true;
+	if(kvi_strEqualCI("sjpeg",codecName))return true;
+#ifndef COMPILE_DISABLE_OGG_THEORA
 	if(kvi_strEqualCI("theora",codecName))return true;
+#endif
 	return false;
 }
 
 static KviDccVideoCodec * kvi_dcc_video_get_codec(const char *codecName)
 {
-	Q_UNUSED(codecName);
-// 	if(kvi_strEqualCI("jpeg",codecName))return new KviDccVideoJpegCodec();
-	return new KviDccVideoTheoraCodec();
+#ifndef COMPILE_DISABLE_OGG_THEORA
+	if(kvi_strEqualCI("theora",codecName))return new KviDccVideoTheoraCodec();
+#endif
+	return new KviDccVideoSJpegCodec();
 }