Georgi Chorbadzhiyski
13 years ago
4 changed files with 201 additions and 109 deletions
Unified View
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+1 -72mpeg/psi.h
-
+121 -0mpeg/psi/cat.h
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+78 -0mpeg/psi/cat_print.h
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+1 -37mpeg/psi_print.h
+ 1
- 72
mpeg/psi.h
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+ 121
- 0
mpeg/psi/cat.h
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| @ -0,0 +1,121 @@ | |||||
| /***************************************************************************** | |||||
| * cat.h: ISO/IEC 13818-1 Conditional Access Table (CAT) | |||||
| ***************************************************************************** | |||||
| * Copyright (C) 2011 Unix Solutions Ltd. | |||||
| * | |||||
| * Authors: Georgi Chorbadzhiyski <georgi@unixsol.org> | |||||
| * | |||||
| * 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_CAT_H__ | |||||
| #define __BITSTREAM_MPEG_CAT_H__ | |||||
| #include <bitstream/common.h> | |||||
| #include <bitstream/mpeg/psi/psi.h> | |||||
| #include <bitstream/mpeg/psi/descriptors.h> | |||||
| #ifdef __cplusplus | |||||
| extern "C" | |||||
| { | |||||
| #endif | |||||
| /***************************************************************************** | |||||
| * Conditional Access Table | |||||
| *****************************************************************************/ | |||||
| #define CAT_PID 0x01 | |||||
| #define CAT_TABLE_ID 0x01 | |||||
| #define CAT_HEADER_SIZE PSI_HEADER_SIZE_SYNTAX1 | |||||
| static inline void cat_init(uint8_t *p_cat) | |||||
| { | |||||
| psi_init(p_cat, true); | |||||
| psi_set_tableid(p_cat, CAT_TABLE_ID); | |||||
| p_cat[1] &= ~0x40; | |||||
| psi_set_section(p_cat, 0); | |||||
| psi_set_lastsection(p_cat, 0); | |||||
| } | |||||
| static inline void cat_set_length(uint8_t *p_cat, uint16_t i_cat_length) | |||||
| { | |||||
| psi_set_length(p_cat, CAT_HEADER_SIZE + PSI_CRC_SIZE - PSI_HEADER_SIZE | |||||
| + i_cat_length); | |||||
| } | |||||
| static inline uint16_t cat_get_desclength(const uint8_t *p_cat) | |||||
| { | |||||
| return psi_get_length(p_cat) - (CAT_HEADER_SIZE + PSI_CRC_SIZE - PSI_HEADER_SIZE); | |||||
| } | |||||
| static inline uint8_t *cat_get_descl(uint8_t *p_cat) | |||||
| { | |||||
| return p_cat + CAT_HEADER_SIZE; | |||||
| } | |||||
| static inline const uint8_t *cat_get_descl_const(const uint8_t *p_cat) | |||||
| { | |||||
| return p_cat + CAT_HEADER_SIZE; | |||||
| } | |||||
| static inline bool cat_validate(const uint8_t *p_cat) | |||||
| { | |||||
| uint16_t i_section_size = psi_get_length(p_cat) + PSI_HEADER_SIZE | |||||
| - PSI_CRC_SIZE; | |||||
| if (!psi_get_syntax(p_cat) || psi_get_section(p_cat) | |||||
| || psi_get_lastsection(p_cat) | |||||
| || psi_get_tableid(p_cat) != CAT_TABLE_ID) | |||||
| return false; | |||||
| if (i_section_size < CAT_HEADER_SIZE | |||||
| || i_section_size < CAT_HEADER_SIZE + cat_get_desclength(p_cat)) | |||||
| return false; | |||||
| if (!descl_validate(cat_get_descl_const(p_cat), cat_get_desclength(p_cat))) | |||||
| return false; | |||||
| return true; | |||||
| } | |||||
| static inline bool cat_table_validate(uint8_t **pp_sections) | |||||
| { | |||||
| uint8_t i_last_section = psi_table_get_lastsection(pp_sections); | |||||
| uint8_t i; | |||||
| for (i = 0; i <= i_last_section; i++) { | |||||
| uint8_t *p_section = psi_table_get_section(pp_sections, i); | |||||
| if (!psi_check_crc(p_section)) | |||||
| return false; | |||||
| } | |||||
| return true; | |||||
| } | |||||
| #ifdef __cplusplus | |||||
| } | |||||
| #endif | |||||
| #endif | |||||
+ 78
- 0
mpeg/psi/cat_print.h
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| @ -0,0 +1,78 @@ | |||||
| /***************************************************************************** | |||||
| * cat_print.h: ISO/IEC 13818-1 Conditional Access Table (printing) | |||||
| ***************************************************************************** | |||||
| * Copyright (C) 2011 Unix Solutions Ltd. | |||||
| * | |||||
| * Authors: Georgi Chorbadzhiyski <georgi@unixsol.org> | |||||
| * | |||||
| * 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. | |||||
| *****************************************************************************/ | |||||
| #ifndef __BITSTREAM_MPEG_CAT_PRINT_H__ | |||||
| #define __BITSTREAM_MPEG_CAT_PRINT_H__ | |||||
| #include <bitstream/common.h> | |||||
| #include <bitstream/mpeg/psi/psi.h> | |||||
| #include <bitstream/mpeg/psi/cat.h> | |||||
| #ifdef __cplusplus | |||||
| extern "C" | |||||
| { | |||||
| #endif | |||||
| static inline void cat_table_print(uint8_t **pp_sections, f_print pf_print, | |||||
| void *opaque, print_type_t i_print_type) | |||||
| { | |||||
| uint8_t i_last_section = psi_table_get_lastsection(pp_sections); | |||||
| uint8_t i; | |||||
| switch (i_print_type) { | |||||
| case PRINT_XML: | |||||
| pf_print(opaque, "<CAT version=\"%hhu\" current_next=\"%d\">", | |||||
| psi_table_get_version(pp_sections), | |||||
| !psi_table_get_current(pp_sections) ? 0 : 1); | |||||
| break; | |||||
| default: | |||||
| pf_print(opaque, "new CAT version=%hhu%s", | |||||
| psi_table_get_version(pp_sections), | |||||
| !psi_table_get_current(pp_sections) ? " (next)" : ""); | |||||
| } | |||||
| for (i = 0; i <= i_last_section; i++) { | |||||
| uint8_t *p_section = psi_table_get_section(pp_sections, i); | |||||
| descl_print(cat_get_descl(p_section), cat_get_desclength(p_section), | |||||
| pf_print, opaque, NULL, NULL, i_print_type); | |||||
| } | |||||
| switch (i_print_type) { | |||||
| case PRINT_XML: | |||||
| pf_print(opaque, "</CAT>"); | |||||
| break; | |||||
| default: | |||||
| pf_print(opaque, "end CAT"); | |||||
| } | |||||
| } | |||||
| #ifdef __cplusplus | |||||
| } | |||||
| #endif | |||||
| #endif | |||||