Christophe Massiot
13 years ago
committed by
Georgi Chorbadzhiyski
Georgi Chorbadzhiyski
2 changed files with 539 additions and 490 deletions
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+1 -490mpeg/psi.h
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mpeg/psi/psi.h
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| @ -0,0 +1,538 @@ | |||
| /***************************************************************************** | |||
| * psi.h: ISO/IEC 13818-1 Program Specific Information (sections) | |||
| ***************************************************************************** | |||
| * 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: | |||
| * - ISO/IEC 13818-1:2007(E) (MPEG-2 Systems) | |||
| */ | |||
| #ifndef __BITSTREAM_MPEG_SECTIONS_H__ | |||
| #define __BITSTREAM_MPEG_SECTIONS_H__ | |||
| #include <bitstream/common.h> | |||
| #include <bitstream/mpeg/ts.h> | |||
| #ifdef __cplusplus | |||
| extern "C" | |||
| { | |||
| #endif | |||
| /***************************************************************************** | |||
| * p_psi_crc_table | |||
| ***************************************************************************** | |||
| * This table is used to compute a PSI CRC byte per byte instead of bit per | |||
| * bit. It's been generated by 'gen_crc' in the 'misc' directory: | |||
| * | |||
| * uint32_t table[256]; | |||
| * uint32_t i, j, k; | |||
| * | |||
| * for(i = 0; i < 256; i++) | |||
| * { | |||
| * k = 0; | |||
| * for (j = (i << 24) | 0x800000; j != 0x80000000; j <<= 1) | |||
| * k = (k << 1) ^ (((k ^ j) & 0x80000000) ? 0x04c11db7 : 0); | |||
| * table[i] = k; | |||
| * } | |||
| * | |||
| * A CRC is computed like this: | |||
| * | |||
| * initialization | |||
| * -------------- | |||
| * uint32_t i_crc = 0xffffffff; | |||
| * | |||
| * for each data byte do | |||
| * --------------------- | |||
| * i_crc = (i_crc << 8) ^ s_crc32_table[(i_crc >> 24) ^ (data_byte)]; | |||
| *****************************************************************************/ | |||
| static const uint32_t p_psi_crc_table[256] = { | |||
| 0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, | |||
| 0x130476dc, 0x17c56b6b, 0x1a864db2, 0x1e475005, | |||
| 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61, | |||
| 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, | |||
| 0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9, | |||
| 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75, | |||
| 0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, | |||
| 0x791d4014, 0x7ddc5da3, 0x709f7b7a, 0x745e66cd, | |||
| 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039, | |||
| 0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, | |||
| 0xbe2b5b58, 0xbaea46ef, 0xb7a96036, 0xb3687d81, | |||
| 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d, | |||
| 0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, | |||
| 0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95, | |||
| 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1, | |||
| 0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, | |||
| 0x34867077, 0x30476dc0, 0x3d044b19, 0x39c556ae, | |||
| 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072, | |||
| 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, | |||
| 0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca, | |||
| 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde, | |||
| 0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, | |||
| 0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1, 0x53dc6066, | |||
| 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba, | |||
| 0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, | |||
| 0xbfa1b04b, 0xbb60adfc, 0xb6238b25, 0xb2e29692, | |||
| 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6, | |||
| 0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, | |||
| 0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e, | |||
| 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2, | |||
| 0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, | |||
| 0xd5b88683, 0xd1799b34, 0xdc3abded, 0xd8fba05a, | |||
| 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637, | |||
| 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, | |||
| 0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f, | |||
| 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53, | |||
| 0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, | |||
| 0x36194d42, 0x32d850f5, 0x3f9b762c, 0x3b5a6b9b, | |||
| 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff, | |||
| 0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, | |||
| 0xf12f560e, 0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7, | |||
| 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b, | |||
| 0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, | |||
| 0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3, | |||
| 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7, | |||
| 0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, | |||
| 0x9b3660c6, 0x9ff77d71, 0x92b45ba8, 0x9675461f, | |||
| 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3, | |||
| 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, | |||
| 0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c, | |||
| 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8, | |||
| 0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, | |||
| 0x119b4be9, 0x155a565e, 0x18197087, 0x1cd86d30, | |||
| 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec, | |||
| 0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, | |||
| 0x2497d08d, 0x2056cd3a, 0x2d15ebe3, 0x29d4f654, | |||
| 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0, | |||
| 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, | |||
| 0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18, | |||
| 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4, | |||
| 0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, | |||
| 0x9abc8bd5, 0x9e7d9662, 0x933eb0bb, 0x97ffad0c, | |||
| 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668, | |||
| 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4 | |||
| }; | |||
| /***************************************************************************** | |||
| * PSI section | |||
| *****************************************************************************/ | |||
| #define PSI_HEADER_SIZE 3 | |||
| #define PSI_HEADER_SIZE_SYNTAX1 8 | |||
| #define PSI_CRC_SIZE 4 | |||
| #define PSI_MAX_SIZE 1021 | |||
| #define PSI_PRIVATE_MAX_SIZE 4093 | |||
| #define PSI_DECLARE(p_table) \ | |||
| uint8_t p_table[PSI_MAX_SIZE + PSI_HEADER_SIZE] | |||
| #define PSI_PRIVATE_DECLARE(p_table) \ | |||
| uint8_t p_table[PSI_PRIVATE_MAX_SIZE + PSI_HEADER_SIZE] | |||
| static inline uint8_t *psi_allocate(void) | |||
| { | |||
| return malloc((PSI_MAX_SIZE + PSI_HEADER_SIZE) * sizeof(uint8_t)); | |||
| } | |||
| static inline uint8_t *psi_private_allocate(void) | |||
| { | |||
| return malloc((PSI_PRIVATE_MAX_SIZE + PSI_HEADER_SIZE) * sizeof(uint8_t)); | |||
| } | |||
| static inline void psi_set_tableid(uint8_t *p_section, uint8_t i_table_id) | |||
| { | |||
| p_section[0] = i_table_id; | |||
| } | |||
| static inline uint8_t psi_get_tableid(const uint8_t *p_section) | |||
| { | |||
| return p_section[0]; | |||
| } | |||
| static inline void psi_set_syntax(uint8_t *p_section) | |||
| { | |||
| p_section[1] |= 0x80; | |||
| } | |||
| static inline bool psi_get_syntax(const uint8_t *p_section) | |||
| { | |||
| return !!(p_section[1] & 0x80); | |||
| } | |||
| static inline void psi_init(uint8_t *p_section, bool b_syntax) | |||
| { | |||
| /* set reserved bits */ | |||
| p_section[1] = 0x70; | |||
| if (b_syntax) { | |||
| psi_set_syntax(p_section); | |||
| p_section[5] = 0xc0; | |||
| } | |||
| } | |||
| static inline void psi_set_length(uint8_t *p_section, uint16_t i_length) | |||
| { | |||
| p_section[1] &= ~0xf; | |||
| p_section[1] |= (i_length >> 8) & 0xf; | |||
| p_section[2] = i_length & 0xff; | |||
| } | |||
| static inline uint16_t psi_get_length(const uint8_t *p_section) | |||
| { | |||
| return ((p_section[1] & 0xf) << 8) | p_section[2]; | |||
| } | |||
| static inline void psi_set_tableidext(uint8_t *p_section, | |||
| uint16_t i_table_id_ext) | |||
| { | |||
| p_section[3] = i_table_id_ext >> 8; | |||
| p_section[4] = i_table_id_ext & 0xff; | |||
| } | |||
| static inline uint16_t psi_get_tableidext(const uint8_t *p_section) | |||
| { | |||
| return (p_section[3] << 8) | p_section[4]; | |||
| } | |||
| static inline void psi_set_version(uint8_t *p_section, uint8_t i_version) | |||
| { | |||
| p_section[5] = i_version << 1; | |||
| } | |||
| static inline uint8_t psi_get_version(const uint8_t *p_section) | |||
| { | |||
| return (p_section[5] & 0x1e) >> 1; | |||
| } | |||
| static inline void psi_set_current(uint8_t *p_section) | |||
| { | |||
| p_section[5] |= 0x1; | |||
| } | |||
| static inline bool psi_get_current(const uint8_t *p_section) | |||
| { | |||
| return !!(p_section[5] & 0x1); | |||
| } | |||
| static inline void psi_set_section(uint8_t *p_section, uint8_t i_section) | |||
| { | |||
| p_section[6] = i_section; | |||
| } | |||
| static inline uint8_t psi_get_section(const uint8_t *p_section) | |||
| { | |||
| return p_section[6]; | |||
| } | |||
| static inline void psi_set_lastsection(uint8_t *p_section, | |||
| uint8_t i_last_section) | |||
| { | |||
| p_section[7] = i_last_section; | |||
| } | |||
| static inline uint8_t psi_get_lastsection(const uint8_t *p_section) | |||
| { | |||
| return p_section[7]; | |||
| } | |||
| /***************************************************************************** | |||
| * PSI validation | |||
| *****************************************************************************/ | |||
| static inline void psi_set_crc(uint8_t *p_section) | |||
| { | |||
| uint32_t i_crc = 0xffffffff; | |||
| uint16_t i_end = (((p_section[1] & 0xf) << 8) | p_section[2]) | |||
| + PSI_HEADER_SIZE - PSI_CRC_SIZE; | |||
| uint16_t i; | |||
| for (i = 0; i < i_end; i++) | |||
| i_crc = (i_crc << 8) ^ p_psi_crc_table[(i_crc >> 24) ^ (p_section[i])]; | |||
| p_section[i_end] = i_crc >> 24; | |||
| p_section[i_end + 1] = (i_crc >> 16) & 0xff; | |||
| p_section[i_end + 2] = (i_crc >> 8) & 0xff; | |||
| p_section[i_end + 3] = i_crc & 0xff; | |||
| } | |||
| static inline bool psi_check_crc(const uint8_t *p_section) | |||
| { | |||
| uint32_t i_crc = 0xffffffff; | |||
| uint16_t i_end = (((p_section[1] & 0xf) << 8) | p_section[2]) | |||
| + PSI_HEADER_SIZE - PSI_CRC_SIZE; | |||
| uint16_t i; | |||
| for (i = 0; i < i_end; i++) | |||
| i_crc = (i_crc << 8) ^ p_psi_crc_table[(i_crc >> 24) ^ (p_section[i])]; | |||
| return p_section[i_end] == (i_crc >> 24) | |||
| && p_section[i_end + 1] == ((i_crc >> 16) & 0xff) | |||
| && p_section[i_end + 2] == ((i_crc >> 8) & 0xff) | |||
| && p_section[i_end + 3] == (i_crc & 0xff); | |||
| } | |||
| static inline bool psi_validate(const uint8_t *p_section) | |||
| { | |||
| if (psi_get_syntax(p_section) | |||
| && (psi_get_length(p_section) < PSI_HEADER_SIZE_SYNTAX1 | |||
| - PSI_HEADER_SIZE + PSI_CRC_SIZE)) | |||
| return false; | |||
| /* only do the CRC check when it is strictly necessary */ | |||
| return true; | |||
| } | |||
| static inline bool psi_compare(const uint8_t *p_section1, | |||
| const uint8_t *p_section2) | |||
| { | |||
| return psi_get_version(p_section1) == psi_get_version(p_section2) | |||
| && psi_get_length(p_section1) == psi_get_length(p_section2) | |||
| && !memcmp(p_section1, p_section2, | |||
| psi_get_length(p_section1) + PSI_HEADER_SIZE); | |||
| } | |||
| /***************************************************************************** | |||
| * PSI section gathering | |||
| *****************************************************************************/ | |||
| static inline void psi_assemble_init(uint8_t **pp_psi_buffer, | |||
| uint16_t *pi_psi_buffer_used) | |||
| { | |||
| *pp_psi_buffer = NULL; | |||
| *pi_psi_buffer_used = 0; | |||
| } | |||
| static inline void psi_assemble_reset(uint8_t **pp_psi_buffer, | |||
| uint16_t *pi_psi_buffer_used) | |||
| { | |||
| free(*pp_psi_buffer); | |||
| psi_assemble_init(pp_psi_buffer, pi_psi_buffer_used); | |||
| } | |||
| static inline bool psi_assemble_empty(uint8_t **pp_psi_buffer, | |||
| uint16_t *pi_psi_buffer_used) | |||
| { | |||
| return *pp_psi_buffer == NULL; | |||
| } | |||
| static inline uint8_t *psi_assemble_payload(uint8_t **pp_psi_buffer, | |||
| uint16_t *pi_psi_buffer_used, | |||
| const uint8_t **pp_payload, | |||
| uint8_t *pi_length) | |||
| { | |||
| uint16_t i_remaining_size = PSI_PRIVATE_MAX_SIZE + PSI_HEADER_SIZE | |||
| - *pi_psi_buffer_used; | |||
| uint16_t i_copy_size = *pi_length < i_remaining_size ? *pi_length : | |||
| i_remaining_size; | |||
| uint8_t *p_section = NULL; | |||
| if (*pp_psi_buffer == NULL) { | |||
| if (**pp_payload == 0xff) { | |||
| /* padding table to the end of buffer */ | |||
| *pi_length = 0; | |||
| return NULL; | |||
| } | |||
| *pp_psi_buffer = psi_private_allocate(); | |||
| } | |||
| memcpy(*pp_psi_buffer + *pi_psi_buffer_used, *pp_payload, i_copy_size); | |||
| *pi_psi_buffer_used += i_copy_size; | |||
| if (*pi_psi_buffer_used >= PSI_HEADER_SIZE) { | |||
| uint16_t i_section_size = psi_get_length(*pp_psi_buffer) | |||
| + PSI_HEADER_SIZE; | |||
| if (i_section_size > PSI_PRIVATE_MAX_SIZE) { | |||
| /* invalid section */ | |||
| psi_assemble_reset(pp_psi_buffer, pi_psi_buffer_used); | |||
| *pi_length = 0; | |||
| return NULL; | |||
| } | |||
| if (i_section_size <= *pi_psi_buffer_used) { | |||
| p_section = *pp_psi_buffer; | |||
| i_copy_size -= (*pi_psi_buffer_used - i_section_size); | |||
| *pp_psi_buffer = NULL; | |||
| *pi_psi_buffer_used = 0; | |||
| } | |||
| } | |||
| *pp_payload += i_copy_size; | |||
| *pi_length -= i_copy_size; | |||
| return p_section; | |||
| } | |||
| /***************************************************************************** | |||
| * PSI section splitting | |||
| *****************************************************************************/ | |||
| static inline void psi_split_end(uint8_t *p_ts, uint8_t *pi_ts_offset) | |||
| { | |||
| if (*pi_ts_offset != TS_SIZE) { | |||
| memset(p_ts + *pi_ts_offset, 0xff, TS_SIZE - *pi_ts_offset); | |||
| *pi_ts_offset = TS_SIZE; | |||
| } | |||
| } | |||
| static inline void psi_split_section(uint8_t *p_ts, uint8_t *pi_ts_offset, | |||
| const uint8_t *p_section, | |||
| uint16_t *pi_section_offset) | |||
| { | |||
| uint16_t i_section_length = psi_get_length(p_section) + PSI_HEADER_SIZE | |||
| - *pi_section_offset; | |||
| uint8_t i_ts_length, i_copy; | |||
| if (!*pi_ts_offset) { | |||
| ts_init(p_ts); | |||
| ts_set_payload(p_ts); | |||
| *pi_ts_offset = ts_payload(p_ts) - p_ts; | |||
| } | |||
| if (!*pi_section_offset) { | |||
| if (TS_SIZE - *pi_ts_offset < 2) { | |||
| psi_split_end(p_ts, pi_ts_offset); | |||
| return; | |||
| } | |||
| if (!ts_get_unitstart(p_ts)) { | |||
| uint8_t *p_payload = ts_payload(p_ts); | |||
| uint8_t i_payload_length = *pi_ts_offset - (p_payload - p_ts); | |||
| if (i_payload_length) | |||
| memmove(p_payload + 1, p_payload, i_payload_length); | |||
| (*pi_ts_offset)++; | |||
| *p_payload = i_payload_length; /* pointer_field */ | |||
| ts_set_unitstart(p_ts); | |||
| } | |||
| } | |||
| i_ts_length = TS_SIZE - *pi_ts_offset; | |||
| i_copy = i_ts_length < i_section_length ? | |||
| i_ts_length : i_section_length; | |||
| memcpy(p_ts + *pi_ts_offset, p_section + *pi_section_offset, i_copy); | |||
| *pi_ts_offset += i_copy; | |||
| *pi_section_offset += i_copy; | |||
| } | |||
| /***************************************************************************** | |||
| * PSI table gathering | |||
| *****************************************************************************/ | |||
| #define PSI_TABLE_MAX_SECTIONS 256 | |||
| #define PSI_TABLE_DECLARE(pp_table) \ | |||
| uint8_t *pp_table[PSI_TABLE_MAX_SECTIONS] | |||
| static inline uint8_t **psi_table_allocate(void) | |||
| { | |||
| return malloc(PSI_TABLE_MAX_SECTIONS * sizeof(uint8_t *)); | |||
| } | |||
| static inline void psi_table_init(uint8_t **pp_sections) | |||
| { | |||
| int i; | |||
| for (i = 0; i < PSI_TABLE_MAX_SECTIONS; i++) | |||
| pp_sections[i] = NULL; | |||
| } | |||
| static inline void psi_table_free(uint8_t **pp_sections) | |||
| { | |||
| int i; | |||
| for (i = 0; i < PSI_TABLE_MAX_SECTIONS; i++) | |||
| free(pp_sections[i]); | |||
| } | |||
| static inline bool psi_table_validate(uint8_t * const *pp_sections) | |||
| { | |||
| return pp_sections[0] != NULL; | |||
| } | |||
| static inline void psi_table_copy(uint8_t **pp_dest, uint8_t **pp_src) | |||
| { | |||
| memcpy(pp_dest, pp_src, PSI_TABLE_MAX_SECTIONS * sizeof(uint8_t *)); | |||
| } | |||
| #define psi_table_get_tableid(pp_sections) \ | |||
| psi_get_tableid(pp_sections[0]) | |||
| #define psi_table_get_version(pp_sections) \ | |||
| psi_get_version(pp_sections[0]) | |||
| #define psi_table_get_current(pp_sections) \ | |||
| psi_get_current(pp_sections[0]) | |||
| #define psi_table_get_lastsection(pp_sections) \ | |||
| psi_get_lastsection(pp_sections[0]) | |||
| #define psi_table_get_tableidext(pp_sections) \ | |||
| psi_get_tableidext(pp_sections[0]) | |||
| static inline bool psi_table_section(uint8_t **pp_sections, uint8_t *p_section) | |||
| { | |||
| uint8_t i_section = psi_get_section( p_section ); | |||
| uint8_t i_last_section = psi_get_lastsection( p_section ); | |||
| uint8_t i_version = psi_get_version( p_section ); | |||
| uint16_t i_tableidext = psi_get_tableidext( p_section ); | |||
| int i; | |||
| free(pp_sections[i_section]); | |||
| pp_sections[i_section] = p_section; | |||
| for (i = 0; i <= i_last_section; i++) { | |||
| uint8_t *p = pp_sections[i]; | |||
| if (p == NULL) | |||
| return false; | |||
| if (psi_get_lastsection(p) != i_last_section | |||
| || psi_get_version(p) != i_version | |||
| || psi_get_tableidext(p) != i_tableidext) | |||
| return false; | |||
| } | |||
| /* free spurious, invalid sections */ | |||
| for (; i < PSI_TABLE_MAX_SECTIONS; i++) { | |||
| free(pp_sections[i]); | |||
| pp_sections[i] = NULL; | |||
| } | |||
| /* a new, full table is available */ | |||
| return true; | |||
| } | |||
| static inline uint8_t *psi_table_get_section(uint8_t **pp_sections, uint8_t n) | |||
| { | |||
| return pp_sections[n]; | |||
| } | |||
| static inline bool psi_table_compare(uint8_t **pp_sections1, | |||
| uint8_t **pp_sections2) | |||
| { | |||
| uint8_t i_last_section = psi_table_get_lastsection(pp_sections1); | |||
| uint8_t i; | |||
| if (i_last_section != psi_table_get_lastsection(pp_sections2)) | |||
| return false; | |||
| for (i = 0; i <= i_last_section; i++) { | |||
| const uint8_t *p_section1 = psi_table_get_section(pp_sections1, i); | |||
| const uint8_t *p_section2 = psi_table_get_section(pp_sections2, i); | |||
| if (!psi_compare(p_section1, p_section2)) | |||
| return false; | |||
| } | |||
| return true; | |||
| } | |||
| #ifdef __cplusplus | |||
| } | |||
| #endif | |||
| #endif | |||