Georgi Chorbadzhiyski
14 years ago
8 changed files with 286 additions and 2 deletions
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+1 -0README
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+0 -1TODO
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+204 -0dvb/si/desc_6d.h
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+1 -0dvb/si/descs_list.h
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+60 -1examples/dvb_gen_si.c
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+7 -0examples/dvb_print_si.output.txt
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+12 -0examples/dvb_print_si.output.xml
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+1 -0mpeg/psi/descs_print.h
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README
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TODO
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+ 204
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dvb/si/desc_6d.h
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| @ -0,0 +1,204 @@ | |||
| /***************************************************************************** | |||
| * desc_6d.h: ETSI EN 300 468 Descriptor 0x6d: Cell frequency link descriptor | |||
| ***************************************************************************** | |||
| * 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: | |||
| * - ETSI EN 300 468 V1.11.1 (2010-04) (SI in DVB systems) | |||
| */ | |||
| #ifndef __BITSTREAM_DVB_DESC_6D_H__ | |||
| #define __BITSTREAM_DVB_DESC_6D_H__ | |||
| #include <bitstream/common.h> | |||
| #include <bitstream/mpeg/psi/descriptors.h> | |||
| #ifdef __cplusplus | |||
| extern "C" | |||
| { | |||
| #endif | |||
| /***************************************************************************** | |||
| * Descriptor 0x6d: Cell frequency link descriptor | |||
| *****************************************************************************/ | |||
| #define DESC6D_HEADER_SIZE DESC_HEADER_SIZE | |||
| #define DESC6D_DATA_SIZE 7 | |||
| #define DESC6D_SUBCELL_SIZE 5 | |||
| static inline void desc6d_init(uint8_t *p_desc) | |||
| { | |||
| desc_set_tag(p_desc, 0x6d); | |||
| } | |||
| static inline uint16_t desc6dn_get_cell_id(const uint8_t *p_desc_n) | |||
| { | |||
| return (p_desc_n[0] << 8) | p_desc_n[1]; | |||
| } | |||
| static inline void desc6dn_set_cell_id(uint8_t *p_desc_n, uint16_t i_cell_id) | |||
| { | |||
| p_desc_n[0] = (i_cell_id >> 8) & 0xff; | |||
| p_desc_n[1] = i_cell_id & 0xff; | |||
| } | |||
| static inline uint32_t desc6dn_get_frequency(const uint8_t *p_desc_n) | |||
| { | |||
| return (p_desc_n[2] << 24) | (p_desc_n[3] << 16) | (p_desc_n[4] << 8) | p_desc_n[5]; | |||
| } | |||
| static inline void desc6dn_set_frequency(uint8_t *p_desc_n, uint16_t i_frequency) | |||
| { | |||
| p_desc_n[2] = (i_frequency >> 24) & 0xff; | |||
| p_desc_n[3] = (i_frequency >> 16) & 0xff; | |||
| p_desc_n[4] = (i_frequency >> 8) & 0xff; | |||
| p_desc_n[5] = i_frequency & 0xff; | |||
| } | |||
| static inline uint8_t desc6dn_get_subcell_info_loop_length(const uint8_t *p_desc_n) | |||
| { | |||
| return p_desc_n[6]; | |||
| } | |||
| static inline void desc6dn_set_subcell_info_loop_length(uint8_t *p_desc_n, uint8_t i_subcell_info_loop_length) | |||
| { | |||
| p_desc_n[6] = i_subcell_info_loop_length; | |||
| } | |||
| /* Subcell loop */ | |||
| static inline uint8_t desc6dk_get_cell_id_extension(const uint8_t *p_desc_k) | |||
| { | |||
| return p_desc_k[0]; | |||
| } | |||
| static inline void desc6dk_set_cell_id_extension(uint8_t *p_desc_k, uint8_t i_cell_id_extension) | |||
| { | |||
| p_desc_k[0] = i_cell_id_extension; | |||
| } | |||
| static inline uint32_t desc6dk_get_transponder_frequency(const uint8_t *p_desc_k) | |||
| { | |||
| return (p_desc_k[1] << 24) | (p_desc_k[2] << 16) | (p_desc_k[3] << 8) | p_desc_k[4]; | |||
| } | |||
| static inline void desc6dk_set_transponder_frequency(uint8_t *p_desc_k, uint32_t i_frequency) | |||
| { | |||
| p_desc_k[1] = (i_frequency >> 24) & 0xff; | |||
| p_desc_k[2] = (i_frequency >> 16) & 0xff; | |||
| p_desc_k[3] = (i_frequency >> 8) & 0xff; | |||
| p_desc_k[4] = i_frequency & 0xff; | |||
| } | |||
| /* ----- */ | |||
| static inline uint8_t *desc6d_get_cell(uint8_t *p_desc, uint8_t n) | |||
| { | |||
| uint8_t *p_desc_n = p_desc + DESC6D_HEADER_SIZE; | |||
| uint8_t i_desc_size = desc_get_length(p_desc); | |||
| while (n) { | |||
| uint8_t i_desc6d_data_size = DESC6D_DATA_SIZE + desc6dn_get_subcell_info_loop_length(p_desc_n); | |||
| if (p_desc_n + i_desc6d_data_size - p_desc > i_desc_size) | |||
| return NULL; | |||
| p_desc_n += i_desc6d_data_size; | |||
| n--; | |||
| } | |||
| if (p_desc_n - p_desc > i_desc_size) | |||
| return NULL; | |||
| return p_desc_n; | |||
| } | |||
| static inline uint8_t *desc6dn_get_subcell(uint8_t *p_desc_n, uint8_t k) | |||
| { | |||
| int ofs = k * DESC6D_SUBCELL_SIZE; | |||
| if (ofs < desc6dn_get_subcell_info_loop_length(p_desc_n)) | |||
| return p_desc_n + DESC6D_DATA_SIZE + ofs; | |||
| else | |||
| return NULL; | |||
| } | |||
| static inline bool desc6d_validate(const uint8_t *p_desc) | |||
| { | |||
| const uint8_t *p_desc_n = p_desc + DESC6D_HEADER_SIZE; | |||
| int i_desc_size = desc_get_length(p_desc); | |||
| while (i_desc_size > (DESC6D_HEADER_SIZE - DESC_HEADER_SIZE)) { | |||
| uint8_t i_desc6d_data_size = DESC6D_DATA_SIZE + desc6dn_get_subcell_info_loop_length(p_desc_n); | |||
| i_desc_size -= i_desc6d_data_size; | |||
| p_desc_n += i_desc6d_data_size; | |||
| } | |||
| return i_desc_size == (DESC6D_HEADER_SIZE - DESC_HEADER_SIZE); | |||
| } | |||
| static inline void desc6d_print(uint8_t *p_desc, f_print pf_print, | |||
| void *opaque, print_type_t i_print_type) | |||
| { | |||
| uint8_t n = 0; | |||
| uint8_t *p_desc_n; | |||
| while ((p_desc_n = desc6d_get_cell(p_desc, n++)) != NULL) { | |||
| uint8_t k = 0; | |||
| uint8_t *p_desc_k; | |||
| switch (i_print_type) { | |||
| case PRINT_XML: | |||
| pf_print(opaque, | |||
| "<CELL_FREQUENCY_LINK_DESC cell_id=\"%u\" frequency=\"%u\">", | |||
| desc6dn_get_cell_id(p_desc_n), | |||
| desc6dn_get_frequency(p_desc_n) | |||
| ); | |||
| while ((p_desc_k = desc6dn_get_subcell(p_desc_n, k++)) != NULL) { | |||
| pf_print(opaque, | |||
| "<SUBCELL_FREQUENCY_LINK_INFO cell_id_extension=\"%u\" transponder_frequency=\"%u\"/>", | |||
| desc6dk_get_cell_id_extension(p_desc_k), | |||
| desc6dk_get_transponder_frequency(p_desc_k) | |||
| ); | |||
| } | |||
| pf_print(opaque, "</CELL_FREQUENCY_LINK_DESC>"); | |||
| break; | |||
| default: | |||
| pf_print(opaque, | |||
| " - desc 6d cell_frequency_link cell_id=%u frequency=%u", | |||
| desc6dn_get_cell_id(p_desc_n), | |||
| desc6dn_get_frequency(p_desc_n) | |||
| ); | |||
| while ((p_desc_k = desc6dn_get_subcell(p_desc_n, k++)) != NULL) { | |||
| pf_print(opaque, | |||
| " - subcell_frequency_link cell_id_extension=%u" | |||
| " transponder_frequency=%u", | |||
| desc6dk_get_cell_id_extension(p_desc_k), | |||
| desc6dk_get_transponder_frequency(p_desc_k) | |||
| ); | |||
| } | |||
| } | |||
| } | |||
| } | |||
| #ifdef __cplusplus | |||
| } | |||
| #endif | |||
| #endif | |||