A BMediaDecoder wrapper that uses a callback for GetNextChunk()

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20779 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/media/media-add-ons/dvb/MediaStreamDecoder.cpp

@@ -0,0 +1,45 @@
+#include "MediaStreamDecoder.h"
+
+MediaStreamDecoder::MediaStreamDecoder(get_next_chunk_func next_chunk, void *cookie)
+ :	BMediaDecoder()
+ ,	fCookie(cookie)
+ ,	fGetNextChunk(next_chunk)
+{
+}
+
+
+status_t
+MediaStreamDecoder::SetInputFormat(const media_format &in_format)
+{
+	status_t err = BMediaDecoder::InitCheck();
+	if (err)
+		return err;
+
+	return BMediaDecoder::SetTo(&in_format);
+}
+
+
+status_t
+MediaStreamDecoder::SetOutputFormat(media_format *output_format)
+{
+	status_t err = BMediaDecoder::InitCheck();
+	if (err)
+		return err;
+
+	return BMediaDecoder::SetOutputFormat(output_format);
+}
+
+
+status_t
+MediaStreamDecoder::Decode(void *out_buffer, int64 *out_frameCount,
+						 media_header *out_mh, media_decode_info *info)
+{
+	return BMediaDecoder::Decode(out_buffer, out_frameCount, out_mh, info);
+}
+
+
+status_t
+MediaStreamDecoder::GetNextChunk(const void **chunkData, size_t *chunkLen, media_header *mh)
+{
+	return (*fGetNextChunk)(chunkData, chunkLen, mh, fCookie);
+}

src/add-ons/media/media-add-ons/dvb/MediaStreamDecoder.h

@@ -0,0 +1,29 @@
+#ifndef __MEDIA_STREAM_DECODER_H
+#define __MEDIA_STREAM_DECODER_H
+
+#include <media/MediaDecoder.h>
+#include "MediaStreamDecoder.h"
+
+typedef status_t (*get_next_chunk_func)(const void **chunkData, size_t *chunkLen, media_header *mh, void *cookie);
+
+
+class MediaStreamDecoder : private BMediaDecoder
+{
+public:
+				MediaStreamDecoder(get_next_chunk_func next_chunk, void *cookie);
+
+	status_t	SetInputFormat(const media_format &in_format);
+	status_t	SetOutputFormat(media_format *output_format);
+
+	status_t	Decode(void *out_buffer, int64 *out_frameCount,
+		               media_header *out_mh, media_decode_info *info);
+
+private:
+	void *				fCookie;
+	get_next_chunk_func	fGetNextChunk;
+
+private:
+	status_t	GetNextChunk(const void **chunkData, size_t *chunkLen, media_header *mh);
+};
+
+#endif