From 35c5b605963b505668271f9d3047bbc0d7dd42a2 Mon Sep 17 00:00:00 2001 From: Georgi Chorbadzhiyski Date: Mon, 10 Oct 2011 15:56:25 +0300 Subject: [PATCH] mpeg/psi: Add support for descriptor 0x04 (Hierarchy descriptor). --- mpeg/psi/desc_04.h | 141 +++++++++++++++++++++++++++++++++++++++++ mpeg/psi/descs_list.h | 1 + mpeg/psi/descs_print.h | 1 + 3 files changed, 143 insertions(+) create mode 100644 mpeg/psi/desc_04.h diff --git a/mpeg/psi/desc_04.h b/mpeg/psi/desc_04.h new file mode 100644 index 0000000..62e0cf3 --- /dev/null +++ b/mpeg/psi/desc_04.h @@ -0,0 +1,141 @@ +/***************************************************************************** + * desc_04.h: ISO/IEC 13818-1 Descriptor 0x04 (Hierarchy descriptor) + ***************************************************************************** + * Copyright (C) 2011 Unix Solutions Ltd. + * + * Authors: Georgi Chorbadzhiyski + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject + * to the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY + * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + *****************************************************************************/ + +/* + * Normative references: + * - ISO/IEC 13818-1:2007(E) (MPEG-2 Systems) + */ + +#ifndef __BITSTREAM_MPEG_DESC_04_H__ +#define __BITSTREAM_MPEG_DESC_04_H__ + +#include +#include + +#ifdef __cplusplus +extern "C" +{ +#endif + +/***************************************************************************** + * Descriptor 0x04: Hierarchy descriptor + *****************************************************************************/ +#define DESC04_HEADER_SIZE (DESC_HEADER_SIZE + 4) + +static inline void desc04_init(uint8_t *p_desc) +{ + desc_set_tag(p_desc, 0x04); + desc_set_length(p_desc, DESC04_HEADER_SIZE - DESC_HEADER_SIZE); +} + +static inline uint8_t desc04_get_type(const uint8_t *p_desc) +{ + return p_desc[2] & 0x0f; +} + +static inline void desc04_set_type(uint8_t *p_desc, uint8_t i_type) +{ + p_desc[2] = (i_type & 0x0f) | 0xf0; +} + +static inline uint8_t desc04_get_layer_index(const uint8_t *p_desc) +{ + return p_desc[3] & 0x3f; +} + +static inline void desc04_set_layer_index(uint8_t *p_desc, uint8_t i_layer_index) +{ + p_desc[3] = i_layer_index | 0xc0; +} + +static inline uint8_t desc04_get_embedded_layer_index(const uint8_t *p_desc) +{ + return p_desc[4] & 0x3f; +} + +static inline void desc04_set_embedded_layer_index(uint8_t *p_desc, uint8_t i_embedded_layer_index) +{ + p_desc[4] = i_embedded_layer_index | 0xc0; +} + +static inline uint8_t desc04_get_channel(const uint8_t *p_desc) +{ + return p_desc[5] & 0x3f; +} + +static inline void desc04_set_channel(uint8_t *p_desc, uint8_t i_channel) +{ + p_desc[5] = i_channel | 0xc0; +} + +static inline char *desc04_get_type_txt(uint8_t i_type) +{ + return i_type == 0 ? "reserved" : + i_type == 1 ? "ITU-T Rec.H.262.0 | ISO/IEC 13818-2 Spatial Scalability" : + i_type == 2 ? "ITU-T Rec.H.262.0 | ISO/IEC 13818-2 SNR Scalability" : + i_type == 3 ? "ITU-T Rec.H.262.0 | ISO/IEC 13818-2 Temporal Scalability" : + i_type == 4 ? "ITU-T Rec.H.262.0 | ISO/IEC 13818-2 Data paritioning" : + i_type == 5 ? "ISO/IEC 13818-3 Extension bitstream" : + i_type == 6 ? "ITU-T Rec.H.222.0 | ISO/IEC 13818-1 PrivateStream" : + i_type >= 7 && i_type <= 14 ? "reserved" : + i_type == 15 ? "base layer" : "unknown"; +} + +static inline bool desc04_validate(const uint8_t *p_desc) +{ + return desc_get_length(p_desc) >= DESC04_HEADER_SIZE - DESC_HEADER_SIZE; +} + +static inline void desc04_print(const uint8_t *p_desc, f_print pf_print, + void *opaque, print_type_t i_print_type) +{ + switch (i_print_type) { + case PRINT_XML: + pf_print(opaque, "", + desc04_get_type(p_desc), + desc04_get_type_txt(desc04_get_type(p_desc)), + desc04_get_layer_index(p_desc), + desc04_get_embedded_layer_index(p_desc), + desc04_get_channel(p_desc) + ); + break; + default: + pf_print(opaque, " - desc 04 hierarchy type=%u type_txt=\"%s\" layer_index=%u embedded_layer_index=%u channel=%u", + desc04_get_type(p_desc), + desc04_get_type_txt(desc04_get_type(p_desc)), + desc04_get_layer_index(p_desc), + desc04_get_embedded_layer_index(p_desc), + desc04_get_channel(p_desc) + ); + } +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/mpeg/psi/descs_list.h b/mpeg/psi/descs_list.h index 84a5e43..83fd845 100644 --- a/mpeg/psi/descs_list.h +++ b/mpeg/psi/descs_list.h @@ -36,6 +36,7 @@ #include #include +#include #include #include #include diff --git a/mpeg/psi/descs_print.h b/mpeg/psi/descs_print.h index f410082..034c572 100644 --- a/mpeg/psi/descs_print.h +++ b/mpeg/psi/descs_print.h @@ -102,6 +102,7 @@ static inline void descl_print(uint8_t *p_descl, uint16_t i_length, CASE_DESC(02) CASE_DESC(03) + CASE_DESC(04) CASE_DESC(05) CASE_DESC(09) CASE_DESC(0a)