Imported Upstream version 1.1.1+rev1207upstream/1.1.1+rev1207

1 files changed, 122 insertions, 0 deletions

diff --git a/lib/libucsi/mpeg/fmc_descriptor.h b/lib/libucsi/mpeg/fmc_descriptor.h
new file mode 100644
index 0000000..5a5bed2
--- /dev/null
+++ b/lib/libucsi/mpeg/fmc_descriptor.h
@@ -0,0 +1,122 @@
+/*
+ * section and descriptor parser
+ *
+ * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org)
+ * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+#ifndef _UCSI_MPEG_FMC_DESCRIPTOR
+#define _UCSI_MPEG_FMC_DESCRIPTOR 1
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <libucsi/descriptor.h>
+#include <libucsi/endianops.h>
+
+/**
+ * mpeg_fmc_descriptor structure.
+ */
+struct mpeg_fmc_descriptor {
+	struct descriptor d;
+
+	/* struct mpeg_flex_mux muxes[] */
+} __ucsi_packed;
+
+/**
+ * An entry in the muxes field of an mpeg_fmc_descriptor structure.
+ */
+struct mpeg_flex_mux {
+	uint16_t es_id;
+	uint8_t flex_mux_channel;
+} __ucsi_packed;
+
+/**
+ * Process an mpeg_fmc_descriptor structure.
+ *
+ * @param d Generic descriptor structure.
+ * @return Pointer to an mpeg_fmc_descriptor structure, or NULL on error.
+ */
+static inline struct mpeg_fmc_descriptor*
+	mpeg_fmc_descriptor_codec(struct descriptor* d)
+{
+	uint8_t* buf = (uint8_t*) d + 2;
+	int pos = 0;
+	int len = d->len;
+
+	if (len % sizeof(struct mpeg_flex_mux))
+		return NULL;
+
+	while(pos < len) {
+		bswap16(buf+pos);
+		pos += sizeof(struct mpeg_flex_mux);
+	}
+
+	return (struct mpeg_fmc_descriptor*) d;
+}
+
+/**
+ * Convenience iterator for the muxes field of an mpeg_fmc_descriptor structure.
+ *
+ * @param d Generic descriptor structure.
+ * @param pos Variable holding a pointer to the the current entry within the muxes field.
+ */
+#define mpeg_fmc_descriptor_muxes_for_each(d, pos) \
+	for ((pos) = mpeg_fmc_descriptor_muxes_first(d); \
+	     (pos); \
+	     (pos) = mpeg_fmc_descriptor_muxes_next(d, pos))
+
+
+
+
+
+
+
+
+
+
+/******************************** PRIVATE CODE ********************************/
+static inline struct mpeg_flex_mux*
+		mpeg_fmc_descriptor_muxes_first(struct mpeg_fmc_descriptor *d)
+{
+	if (d->d.len < sizeof(struct mpeg_flex_mux))
+		return NULL;
+
+	return (struct mpeg_flex_mux *)
+			((uint8_t*) d + sizeof(struct mpeg_fmc_descriptor));
+}
+
+static inline struct mpeg_flex_mux*
+	mpeg_fmc_descriptor_muxes_next(struct mpeg_fmc_descriptor *d,
+				       struct mpeg_flex_mux *pos)
+{
+	uint8_t *end = (uint8_t*) d + 2 + d->d.len;
+	uint8_t *next =	(uint8_t *) pos + sizeof(struct mpeg_flex_mux);
+
+	if (next >= end)
+		return NULL;
+
+	return (struct mpeg_flex_mux *) next;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif