start of media kit codec plugin API

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5078 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/media/DecoderPlugin.h

@@ -0,0 +1,43 @@
+#include <MediaTrack.h>
+#include "MediaPlugin.h"
+
+namespace BPrivate { namespace media {
+
+class Decoder
+{
+public:
+						Decoder();
+	virtual				~Decoder();
+	
+						// Sniff get's called with the data from Reader::GetStreamInfo
+	virtual status_t	Sniff(media_format *format, void **infoBuffer, int32 *infoSize) = 0;
+	
+	virtual status_t	GetOutputFormat(media_format *format) = 0;
+
+	virtual status_t	Seek(media_seek_type seekTo,
+							 int64 *frame, bigtime_t *time) = 0;
+							 
+	virtual status_t	Decode(void *buffer, int64 *frameCount,
+							   media_header *mediaHeader, media_decode_info *info) = 0;
+							   
+	status_t			GetNextChunk(void **chunkBuffer, int32 *chunkSize,
+									 media_header *mediaHeader);
+
+private:
+	void				Setup(BMediaTrack *reader);
+	BMediaTrack *		fReader;
+};
+
+
+class DecoderPlugin : public MediaPlugin
+{
+public:
+	virtual Decoder *NewDecoder() = 0;
+};
+
+MediaPlugin *instantiate_plugin();
+
+} } // namespace BPrivate::media
+
+using namespace BPrivate::media;
+

headers/private/media/MediaPlugin.h

@@ -0,0 +1,18 @@
+#include <MediaTrack.h>
+
+namespace BPrivate { namespace media {
+
+class MediaPlugin
+{
+public:
+						MediaPlugin();
+	virtual				~MediaPlugin();
+};
+
+class Decoder;
+class Reader;
+
+} } // namespace BPrivate::media
+
+using namespace BPrivate::media;
+

headers/private/media/ReaderPlugin.h

@@ -0,0 +1,50 @@
+#include <MediaTrack.h>
+#include "MediaPlugin.h"
+
+namespace BPrivate { namespace media {
+
+class Reader
+{
+public:
+						Reader();
+	virtual				~Reader();
+	
+	virtual const char *Copyright() = 0;
+	
+	virtual status_t	Sniff(int32 *streamCount) = 0;
+
+	virtual status_t	AllocateCookie(int32 streamNumber, void **cookie) = 0;
+	virtual	status_t	FreeCookie(void *cookie) = 0;
+	
+	virtual status_t	GetStreamInfo(void *cookie, int64 *frameCount, bigtime_t *duration,
+									  media_format *format, void **infoBuffer, int32 *infoSize) = 0;
+
+	virtual status_t	Seek(void *cookie,
+							 media_seek_type seekTo,
+							 int64 *frame, bigtime_t *time) = 0;
+
+	virtual status_t	GetNextChunk(void *cookie,
+									 void **chunkBuffer, int32 *chunkSize,
+									 media_header *mediaHeader) = 0;
+	
+	BDataIO *			Source();
+	
+private:
+	void		Setup(BDataIO *source);
+
+	BDataIO * fSource;
+};
+
+
+class ReaderPlugin : public MediaPlugin
+{
+public:
+	virtual Reader *NewReader() = 0;
+};
+
+MediaPlugin *instantiate_plugin();
+
+} } // namespace BPrivate::media
+
+using namespace BPrivate::media;
+