util functions

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1143 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/media/media-add-ons/reader/misc.cpp

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+// misc.cpp
+//
+// Andrew Bachmann, 2002
+//
+// Some functions for general debugging and
+// working around be media kit bugs.
+
+#include "misc.h"
+#include <stdio.h>
+
+// -------------------------------------------------------- //
+// lib functions
+// -------------------------------------------------------- //
+
+void print_multistream_format(media_multistream_format * format) {
+	fprintf(stderr,"[");
+	switch (format->format) {
+	case media_multistream_format::B_ANY:			fprintf(stderr,"ANY"); break;
+	case media_multistream_format::B_VID:			fprintf(stderr,"VID"); break;
+	case media_multistream_format::B_AVI:			fprintf(stderr,"AVI"); break;
+	case media_multistream_format::B_MPEG1:		fprintf(stderr,"MPEG1"); break;
+	case media_multistream_format::B_MPEG2:		fprintf(stderr,"MPEG2"); break;
+	case media_multistream_format::B_QUICKTIME:	fprintf(stderr,"QUICKTIME"); break;
+	default:			fprintf(stderr,"????"); break;
+	}
+	fprintf(stderr," avg_bit_rate(%f) max_bit_rate(%f)",
+			format->avg_bit_rate,format->max_bit_rate);
+	fprintf(stderr," avg_chunk_size(%i) max_chunk_size(%i)",
+			format->avg_chunk_size,format->max_chunk_size);
+}	
+	
+void print_media_format(media_format * format) {
+	fprintf(stderr,"{");
+	switch (format->type) {
+	case B_MEDIA_NO_TYPE:		fprintf(stderr,"NO_TYPE"); break;		
+	case B_MEDIA_UNKNOWN_TYPE:	fprintf(stderr,"UNKNOWN_TYPE"); break;
+	case B_MEDIA_RAW_AUDIO:		fprintf(stderr,"RAW_AUDIO"); break;
+	case B_MEDIA_RAW_VIDEO:		fprintf(stderr,"RAW_VIDEO"); break;
+	case B_MEDIA_VBL:			fprintf(stderr,"VBL"); break;
+	case B_MEDIA_TIMECODE:		fprintf(stderr,"TIMECODE"); break;
+	case B_MEDIA_MIDI:			fprintf(stderr,"MIDI"); break;
+	case B_MEDIA_TEXT:			fprintf(stderr,"TEXT"); break;
+	case B_MEDIA_HTML:			fprintf(stderr,"HTML"); break;
+	case B_MEDIA_MULTISTREAM:	fprintf(stderr,"MULTISTREAM"); break;
+	case B_MEDIA_PARAMETERS:	fprintf(stderr,"PARAMETERS"); break;
+	case B_MEDIA_ENCODED_AUDIO:	fprintf(stderr,"ENCODED_AUDIO"); break;
+	case B_MEDIA_ENCODED_VIDEO:	fprintf(stderr,"ENCODED_VIDEO"); break;
+	default:					fprintf(stderr,"????"); break;
+	}
+	fprintf(stderr,":");
+	switch (format->type) {
+	case B_MEDIA_RAW_AUDIO:		fprintf(stderr,"RAW_AUDIO"); break;
+	case B_MEDIA_RAW_VIDEO:		fprintf(stderr,"RAW_VIDEO"); break;
+	case B_MEDIA_MULTISTREAM:	print_multistream_format(&format->u.multistream); break;
+	case B_MEDIA_ENCODED_AUDIO:	fprintf(stderr,"ENCODED_AUDIO"); break;
+	case B_MEDIA_ENCODED_VIDEO:	fprintf(stderr,"ENCODED_VIDEO"); break;
+	default:					fprintf(stderr,"????"); break;
+	}
+	fprintf(stderr,"}");
+}
+
+bool multistream_format_is_acceptible(
+						const media_multistream_format & producer_format,
+						const media_multistream_format & consumer_format)
+{
+	// first check the format, if necessary
+	if (consumer_format.format != media_multistream_format::B_ANY) {
+		if (consumer_format.format != producer_format.format) {
+			return false;
+		}
+	}
+	// then check the average bit rate
+	if (consumer_format.avg_bit_rate != media_multistream_format::wildcard.avg_bit_rate) {
+		if (consumer_format.avg_bit_rate != producer_format.avg_bit_rate) {
+			// do they have to match exactly?  I don't know.  assume yes.
+			return false;
+		}
+	}
+	// then check the maximum bit rate
+	if (consumer_format.max_bit_rate != media_multistream_format::wildcard.max_bit_rate) {
+		if (consumer_format.max_bit_rate != producer_format.max_bit_rate) {
+			// do they have to match exactly?  I don't know.  assume yes.
+			return false;
+		}
+	}
+	// then check the average chunk size
+	if (consumer_format.avg_chunk_size != media_multistream_format::wildcard.avg_chunk_size) {
+		if (consumer_format.avg_chunk_size != producer_format.avg_chunk_size) {
+			// do they have to match exactly?  I don't know.  assume yes.
+			return false;
+		}
+	}
+	// then check the maximum bit rate
+	if (consumer_format.max_chunk_size != media_multistream_format::wildcard.max_chunk_size) {
+		if (consumer_format.max_chunk_size != producer_format.max_chunk_size) {
+			// do they have to match exactly?  I don't know.  assume yes.
+			return false;
+		}
+	}
+	// should also check format specific fields, and others?
+	return true;
+}						
+
+bool format_is_acceptible(
+						const media_format & producer_format,
+						const media_format & consumer_format)
+{
+	// first check the type, if necessary
+	if (consumer_format.type != B_MEDIA_UNKNOWN_TYPE) {
+		if (consumer_format.type != producer_format.type) {
+			return false;
+		}
+		switch (consumer_format.type) {
+			case B_MEDIA_MULTISTREAM:
+				if (!multistream_format_is_acceptible(producer_format.u.multistream,
+													  consumer_format.u.multistream)) {
+					return false;
+				}
+				break;
+			default:
+				fprintf(stderr,"format_is_acceptible : unimplemented type.\n");
+				return format_is_compatible(producer_format,consumer_format);
+				break;
+		}
+	}
+	// should also check non-type fields?
+	return true;
+}
+

src/add-ons/media/media-add-ons/reader/misc.h

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+// misc.h
+//
+// Andrew Bachmann, 2002
+//
+// Some functions for general debugging and
+// working around be media kit bugs.
+
+#if !defined(_MISC_H)
+#define _MISC_H
+
+#include <MediaDefs.h>
+
+// -------------------------------------------------------- //
+// lib functions
+// -------------------------------------------------------- //
+
+void print_multistream_format(media_multistream_format * format);
+	
+void print_media_format(media_format * format);
+
+bool multistream_format_is_acceptible(
+						const media_multistream_format & producer_format,
+						const media_multistream_format & consumer_format);
+
+bool format_is_acceptible(
+						const media_format & producer_format,
+						const media_format & consumer_format);
+
+#endif // _MISC_H
+