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Diffstat (limited to '')
| -rw-r--r-- | lib/libucsi/mpeg/metadata_std_descriptor.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/lib/libucsi/mpeg/metadata_std_descriptor.h b/lib/libucsi/mpeg/metadata_std_descriptor.h new file mode 100644 index 0000000..fc83e6e --- /dev/null +++ b/lib/libucsi/mpeg/metadata_std_descriptor.h @@ -0,0 +1,72 @@ +/* + * 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_METADATA_STD_DESCRIPTOR +#define _UCSI_MPEG_METADATA_STD_DESCRIPTOR 1 + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include <libucsi/descriptor.h> +#include <libucsi/endianops.h> + +/** + * mpeg_metadata_std_descriptor structure. + */ +struct mpeg_metadata_std_descriptor { + struct descriptor d; + + EBIT2(uint32_t reserved_1 : 2; , + uint32_t metadata_input_leak_rate :22; ); + EBIT2(uint32_t reserved_2 : 2; , + uint32_t metadata_buffer_size :22; ); + EBIT2(uint32_t reserved_3 : 2; , + uint32_t metadata_output_leak_rate :22; ); +} __ucsi_packed; + +/** + * Process an mpeg_metadata_std_descriptor. + * + * @param d Pointer to the generic descriptor structure. + * @return Pointer to the mpeg_metadata_std_descriptor, or NULL on error. + */ +static inline struct mpeg_metadata_std_descriptor* + mpeg_metadata_std_descriptor_codec(struct descriptor* d) +{ + uint8_t *buf = (uint8_t*) d; + + if (d->len != (sizeof(struct mpeg_metadata_std_descriptor) - 2)) + return NULL; + + bswap24(buf + 2); + bswap24(buf + 5); + bswap24(buf + 8); + + return (struct mpeg_metadata_std_descriptor*) d; +} + +#ifdef __cplusplus +} +#endif + +#endif |