X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=opus_common.h;h=f8cf459c1008fe9731d9eaaaf253fd1be6710af9;hp=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391;hb=04c16387cc13317ded03ce478b131d94558f585f;hpb=8bcf75a3921d15e03c4351b3efa609eac67c3817

diff --git a/opus_common.h b/opus_common.h
index e69de29b..f8cf459c 100644
--- a/opus_common.h
+++ b/opus_common.h
@@ -0,0 +1,28 @@
+/* Copyright (C) 2013 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
+
+/**
+ * \file opus_common.h
+ * Common declarations for the opus decoder and audio format handler.
+ */
+
+/** Various bits stored in the header of an opus stream. */
+struct opus_header {
+	/** lower 4 bits of the version byte, must be 0. */
+	int version;
+	/** 1..255 */
+	int channels;
+	/** Number of bytes to skip from the beginning. */
+	uint16_t preskip;
+	/** Sample rate of the input stream, used by the audio format handler. */
+	uint32_t input_sample_rate;
+	/** In dB, should be zero whenever possible. */
+	uint16_t gain;
+	/** Number of logical streams (usually 1). */
+	int nb_streams;
+	/** Number of streams to decode as 2 channel streams. */
+	int nb_coupled;
+	/** Mapping from coded channels to output channels. */
+	unsigned char stream_map[255];
+};
+
+int opus_parse_header(const char *packet, int len, struct opus_header *h);