Christophe Massiot
13 years ago
committed by
Georgi Chorbadzhiyski
Georgi Chorbadzhiyski
4 changed files with 380 additions and 284 deletions
Unified View
Diff Options
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+1 -207dvb/si.h
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+256 -0dvb/si/sdt.h
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+122 -0dvb/si/sdt_print.h
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+1 -77dvb/si_print.h
+ 1
- 207
dvb/si.h
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+ 256
- 0
dvb/si/sdt.h
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| @ -0,0 +1,256 @@ | |||||
| /***************************************************************************** | |||||
| * sdt.h: ETSI EN 300 468 Service Definition Table (SDT) | |||||
| ***************************************************************************** | |||||
| * Copyright (C) 2009-2010 VideoLAN | |||||
| * | |||||
| * Authors: Christophe Massiot <massiot@via.ecp.fr> | |||||
| * | |||||
| * 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: | |||||
| * - ETSI EN 300 468 V1.11.1 (2010-04) (SI in DVB systems) | |||||
| */ | |||||
| #ifndef __BITSTREAM_DVB_SDT_H__ | |||||
| #define __BITSTREAM_DVB_SDT_H__ | |||||
| #include <bitstream/common.h> | |||||
| #include <bitstream/mpeg/psi/psi.h> | |||||
| #include <bitstream/mpeg/psi/descriptors.h> | |||||
| #ifdef __cplusplus | |||||
| extern "C" | |||||
| { | |||||
| #endif | |||||
| /***************************************************************************** | |||||
| * Service Description Table | |||||
| *****************************************************************************/ | |||||
| #define SDT_PID 0x11 | |||||
| #define SDT_TABLE_ID_ACTUAL 0x42 | |||||
| #define SDT_TABLE_ID_OTHER 0x46 | |||||
| #define SDT_HEADER_SIZE (PSI_HEADER_SIZE_SYNTAX1 + 3) | |||||
| #define SDT_SERVICE_SIZE 5 | |||||
| #define sdt_set_tsid psi_set_tableidext | |||||
| #define sdt_get_tsid psi_get_tableidext | |||||
| static inline void sdt_init(uint8_t *p_sdt, bool b_actual) | |||||
| { | |||||
| psi_init(p_sdt, true); | |||||
| psi_set_tableid(p_sdt, b_actual ? SDT_TABLE_ID_ACTUAL : SDT_TABLE_ID_OTHER); | |||||
| p_sdt[10] = 0xff; | |||||
| } | |||||
| static inline void sdt_set_length(uint8_t *p_sdt, uint16_t i_sdt_length) | |||||
| { | |||||
| psi_set_length(p_sdt, SDT_HEADER_SIZE + PSI_CRC_SIZE - PSI_HEADER_SIZE | |||||
| + i_sdt_length); | |||||
| } | |||||
| static inline void sdt_set_onid(uint8_t *p_sdt, uint16_t i_onid) | |||||
| { | |||||
| p_sdt[8] = i_onid >> 8; | |||||
| p_sdt[9] = i_onid & 0xff; | |||||
| } | |||||
| static inline uint16_t sdt_get_onid(const uint8_t *p_sdt) | |||||
| { | |||||
| return (p_sdt[8] << 8) | p_sdt[9]; | |||||
| } | |||||
| static inline void sdtn_init(uint8_t *p_sdt_n) | |||||
| { | |||||
| p_sdt_n[2] = 0xfc; | |||||
| p_sdt_n[3] = 0; | |||||
| } | |||||
| static inline void sdtn_set_sid(uint8_t *p_sdt_n, uint16_t i_sid) | |||||
| { | |||||
| p_sdt_n[0] = i_sid >> 8; | |||||
| p_sdt_n[1] = i_sid & 0xff; | |||||
| } | |||||
| static inline uint16_t sdtn_get_sid(const uint8_t *p_sdt_n) | |||||
| { | |||||
| return (p_sdt_n[0] << 8) | p_sdt_n[1]; | |||||
| } | |||||
| static inline void sdtn_set_eitschedule(uint8_t *p_sdt_n) | |||||
| { | |||||
| p_sdt_n[2] |= 0x2; | |||||
| } | |||||
| static inline bool sdtn_get_eitschedule(const uint8_t *p_sdt_n) | |||||
| { | |||||
| return !!(p_sdt_n[2] & 0x2); | |||||
| } | |||||
| static inline void sdtn_set_eitpresent(uint8_t *p_sdt_n) | |||||
| { | |||||
| p_sdt_n[2] |= 0x1; | |||||
| } | |||||
| static inline bool sdtn_get_eitpresent(const uint8_t *p_sdt_n) | |||||
| { | |||||
| return !!(p_sdt_n[2] & 0x1); | |||||
| } | |||||
| static inline void sdtn_set_running(uint8_t *p_sdt_n, uint8_t i_running) | |||||
| { | |||||
| p_sdt_n[3] &= 0x1f; | |||||
| p_sdt_n[3] |= i_running << 5; | |||||
| } | |||||
| static inline uint8_t sdtn_get_running(const uint8_t *p_sdt_n) | |||||
| { | |||||
| return p_sdt_n[3] >> 5; | |||||
| } | |||||
| static inline void sdtn_set_ca(uint8_t *p_sdt_n) | |||||
| { | |||||
| p_sdt_n[3] |= 0x10; | |||||
| } | |||||
| static inline bool sdtn_get_ca(const uint8_t *p_sdt_n) | |||||
| { | |||||
| return !!(p_sdt_n[3] & 0x10); | |||||
| } | |||||
| static inline void sdtn_set_desclength(uint8_t *p_sdt_n, uint16_t i_length) | |||||
| { | |||||
| p_sdt_n[3] &= ~0xf; | |||||
| p_sdt_n[3] |= (i_length >> 8) & 0xf; | |||||
| p_sdt_n[4] = i_length & 0xff; | |||||
| } | |||||
| static inline uint16_t sdtn_get_desclength(const uint8_t *p_sdt_n) | |||||
| { | |||||
| return ((p_sdt_n[3] & 0xf) << 8) | p_sdt_n[4]; | |||||
| } | |||||
| static inline uint8_t *sdtn_get_descs(uint8_t *p_sdt_n) | |||||
| { | |||||
| return &p_sdt_n[3]; | |||||
| } | |||||
| static inline uint8_t *sdt_get_service(uint8_t *p_sdt, uint8_t n) | |||||
| { | |||||
| uint16_t i_section_size = psi_get_length(p_sdt) + PSI_HEADER_SIZE | |||||
| - PSI_CRC_SIZE; | |||||
| uint8_t *p_sdt_n = p_sdt + SDT_HEADER_SIZE; | |||||
| while (n) { | |||||
| if (p_sdt_n + SDT_SERVICE_SIZE - p_sdt > i_section_size) return NULL; | |||||
| p_sdt_n += SDT_SERVICE_SIZE + sdtn_get_desclength(p_sdt_n); | |||||
| n--; | |||||
| } | |||||
| if (p_sdt_n - p_sdt >= i_section_size) return NULL; | |||||
| return p_sdt_n; | |||||
| } | |||||
| static inline bool sdt_validate_service(const uint8_t *p_sdt, | |||||
| const uint8_t *p_sdt_n, | |||||
| uint16_t i_desclength) | |||||
| { | |||||
| uint16_t i_section_size = psi_get_length(p_sdt) + PSI_HEADER_SIZE | |||||
| - PSI_CRC_SIZE; | |||||
| return (p_sdt_n + SDT_SERVICE_SIZE + i_desclength | |||||
| <= p_sdt + i_section_size); | |||||
| } | |||||
| static inline bool sdt_validate(const uint8_t *p_sdt) | |||||
| { | |||||
| uint16_t i_section_size = psi_get_length(p_sdt) + PSI_HEADER_SIZE | |||||
| - PSI_CRC_SIZE; | |||||
| const uint8_t *p_sdt_n; | |||||
| if (!psi_get_syntax(p_sdt) | |||||
| || (psi_get_tableid(p_sdt) != SDT_TABLE_ID_ACTUAL | |||||
| && psi_get_tableid(p_sdt) != SDT_TABLE_ID_OTHER)) | |||||
| return false; | |||||
| p_sdt_n = p_sdt + SDT_HEADER_SIZE; | |||||
| while (p_sdt_n + SDT_SERVICE_SIZE - p_sdt <= i_section_size | |||||
| && p_sdt_n + SDT_SERVICE_SIZE + sdtn_get_desclength(p_sdt_n) - p_sdt | |||||
| <= i_section_size) { | |||||
| if (!descs_validate(p_sdt_n + 3)) | |||||
| return false; | |||||
| p_sdt_n += SDT_SERVICE_SIZE + sdtn_get_desclength(p_sdt_n); | |||||
| } | |||||
| return (p_sdt_n - p_sdt == i_section_size); | |||||
| } | |||||
| static inline uint8_t *sdt_table_find_service(uint8_t **pp_sections, | |||||
| uint16_t i_sid) | |||||
| { | |||||
| 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); | |||||
| uint8_t *p_service; | |||||
| int j = 0; | |||||
| while ((p_service = sdt_get_service(p_section, j)) != NULL) { | |||||
| if (sdtn_get_sid(p_service) == i_sid) | |||||
| return p_service; | |||||
| j++; | |||||
| } | |||||
| } | |||||
| return NULL; | |||||
| } | |||||
| static inline bool sdt_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); | |||||
| uint8_t *p_service; | |||||
| int j = 0; | |||||
| if (!psi_check_crc(p_section)) | |||||
| return false; | |||||
| while ((p_service = sdt_get_service(p_section, j)) != NULL) { | |||||
| j++; | |||||
| /* check that the service is not already in the table */ | |||||
| if (sdt_table_find_service(pp_sections, sdtn_get_sid(p_service)) | |||||
| != p_service) | |||||
| return false; | |||||
| } | |||||
| } | |||||
| return true; | |||||
| } | |||||
| #ifdef __cplusplus | |||||
| } | |||||
| #endif | |||||
| #endif | |||||
+ 122
- 0
dvb/si/sdt_print.h
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| @ -0,0 +1,122 @@ | |||||
| /***************************************************************************** | |||||
| * sdt_print.h: ETSI EN 300 468 Service Definition Table (SDT) (printing) | |||||
| ***************************************************************************** | |||||
| * Copyright (C) 2010 VideoLAN | |||||
| * | |||||
| * Authors: Christophe Massiot <massiot@via.ecp.fr> | |||||
| * | |||||
| * 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_DVB_SDT_PRINT_H__ | |||||
| #define __BITSTREAM_DVB_SDT_PRINT_H__ | |||||
| #include <bitstream/common.h> | |||||
| #include <bitstream/mpeg/psi/psi.h> | |||||
| #include <bitstream/mpeg/psi/descs_print.h> | |||||
| #include <bitstream/dvb/si/sdt.h> | |||||
| #ifdef __cplusplus | |||||
| extern "C" | |||||
| { | |||||
| #endif | |||||
| /***************************************************************************** | |||||
| * Service Description Table | |||||
| *****************************************************************************/ | |||||
| static inline void sdt_table_print(uint8_t **pp_sections, | |||||
| f_print pf_print, void *print_opaque, | |||||
| f_iconv pf_iconv, void *iconv_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(print_opaque, "<SDT tid=\"%hhu\" tsid=\"%hu\" version=\"%hhu\" current_next=\"%d\" onid=\"%hu\">", | |||||
| psi_table_get_tableid(pp_sections), | |||||
| psi_table_get_tableidext(pp_sections), | |||||
| psi_table_get_version(pp_sections), | |||||
| !psi_table_get_current(pp_sections) ? 0 : 1, | |||||
| sdt_get_onid(psi_table_get_section(pp_sections, 0))); | |||||
| break; | |||||
| default: | |||||
| pf_print(print_opaque, "new SDT %s tsid=%hu version=%hhu%s onid=%hu", | |||||
| psi_table_get_tableid(pp_sections) == SDT_TABLE_ID_ACTUAL ? | |||||
| "actual" : "other", | |||||
| psi_table_get_tableidext(pp_sections), | |||||
| psi_table_get_version(pp_sections), | |||||
| !psi_table_get_current(pp_sections) ? " (next)" : "", | |||||
| sdt_get_onid(psi_table_get_section(pp_sections, 0))); | |||||
| } | |||||
| for (i = 0; i <= i_last_section; i++) { | |||||
| uint8_t *p_section = psi_table_get_section(pp_sections, i); | |||||
| uint8_t *p_service; | |||||
| int j = 0; | |||||
| while ((p_service = sdt_get_service(p_section, j)) != NULL) { | |||||
| j++; | |||||
| switch (i_print_type) { | |||||
| case PRINT_XML: | |||||
| pf_print(print_opaque, "<SERVICE sid=\"%hu\" eit_schedule=\"%d\" eit_pf=\"%d\" running=\"%hhu\" free_CA=\"%d\">", | |||||
| sdtn_get_sid(p_service), | |||||
| sdtn_get_eitschedule(p_service) ? 1 : 0, | |||||
| sdtn_get_eitpresent(p_service) ? 1 : 0, | |||||
| sdtn_get_running(p_service), | |||||
| sdtn_get_ca(p_service) ? 1 : 0); | |||||
| break; | |||||
| default: | |||||
| pf_print(print_opaque, " * service sid=%hu eit%s%s running=%hhu%s", | |||||
| sdtn_get_sid(p_service), | |||||
| sdtn_get_eitschedule(p_service) ? " schedule" : "", | |||||
| sdtn_get_eitpresent(p_service) ? " present" : "", | |||||
| sdtn_get_running(p_service), | |||||
| sdtn_get_ca(p_service) ? " scrambled" : ""); | |||||
| } | |||||
| descs_print(sdtn_get_descs(p_service), pf_print, print_opaque, | |||||
| pf_iconv, iconv_opaque, i_print_type); | |||||
| switch (i_print_type) { | |||||
| case PRINT_XML: | |||||
| pf_print(print_opaque, "</SERVICE>"); | |||||
| break; | |||||
| default: | |||||
| break; | |||||
| } | |||||
| } | |||||
| } | |||||
| switch (i_print_type) { | |||||
| case PRINT_XML: | |||||
| pf_print(print_opaque, "</SDT>"); | |||||
| break; | |||||
| default: | |||||
| pf_print(print_opaque, "end SDT"); | |||||
| } | |||||
| } | |||||
| #ifdef __cplusplus | |||||
| } | |||||
| #endif | |||||
| #endif | |||||