diff --git a/mpeg/psi/desc_0d.h b/mpeg/psi/desc_0d.h new file mode 100644 index 0000000..a49e0e6 --- /dev/null +++ b/mpeg/psi/desc_0d.h @@ -0,0 +1,120 @@ +/***************************************************************************** + * desc_0d.h: ISO/IEC 13818-1 Descriptor 0x0d (Copyright 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_0D_H__ +#define __BITSTREAM_MPEG_DESC_0D_H__ + +#include +#include + +#ifdef __cplusplus +extern "C" +{ +#endif + +/***************************************************************************** + * Descriptor 0x0d: Copyright descriptor + *****************************************************************************/ +#define DESC0D_HEADER_SIZE (DESC_HEADER_SIZE + 4) + +static inline void desc0d_init(uint8_t *p_desc) +{ + desc_set_tag(p_desc, 0x0d); + desc_set_length(p_desc, DESC0D_HEADER_SIZE - DESC_HEADER_SIZE); +} + +static inline uint32_t desc0d_get_copyright_identifier(const uint8_t *p_desc) +{ + return (p_desc[2] << 24) | (p_desc[3] << 16) | (p_desc[4] << 8) | p_desc[5]; +} + +static inline void desc0d_set_copyright_identifier(uint8_t *p_desc, uint32_t i_copyright_identifier) +{ + p_desc[2] = (i_copyright_identifier >> 24) & 0xff; + p_desc[3] = (i_copyright_identifier >> 16) & 0xff; + p_desc[4] = (i_copyright_identifier >> 8) & 0xff; + p_desc[5] = i_copyright_identifier & 0xff; +} + +static inline const uint8_t *desc0d_get_additional_copyright_info(const uint8_t *p_desc, uint8_t *i_length) +{ + *i_length = desc_get_length(p_desc) - (DESC0D_HEADER_SIZE - DESC_HEADER_SIZE); + if (*i_length) + return &p_desc[DESC0D_HEADER_SIZE]; + return NULL; +} + +static inline void desc0d_set_additional_copyright_info(uint8_t *p_desc, uint8_t *p_additional_copyright_info, uint8_t i_length) +{ + if (i_length == 0 || !p_additional_copyright_info) + desc_set_length(p_desc, DESC0D_HEADER_SIZE - DESC_HEADER_SIZE); + else if (i_length < 252) + { + desc_set_length(p_desc, (DESC0D_HEADER_SIZE - DESC_HEADER_SIZE) + i_length); + memcpy(p_desc + DESC0D_HEADER_SIZE, p_additional_copyright_info, i_length); + } +} + +static inline bool desc0d_validate(const uint8_t *p_desc) +{ + return desc_get_length(p_desc) >= DESC0D_HEADER_SIZE - DESC_HEADER_SIZE; +} + +static inline void desc0d_print(const uint8_t *p_desc, f_print pf_print, + void *opaque, print_type_t i_print_type) +{ + uint8_t i, i_length; + const uint8_t *p_add_copy_info = desc0d_get_additional_copyright_info(p_desc, &i_length); + char psz_value[2 * 255 + 1]; + + for (i = 0; i < i_length; i++) + sprintf(psz_value + 2 * i, "%2.2hhx", p_add_copy_info[i]); + psz_value[2 * i] = '\0'; + + switch (i_print_type) { + case PRINT_XML: + pf_print(opaque, "", + desc0d_get_copyright_identifier(p_desc), + i_length, psz_value); + break; + default: + pf_print(opaque, " - desc 0d copyright identifier=0x%08x additional_info_len=%u additional_info=%s", + desc0d_get_copyright_identifier(p_desc), + i_length, psz_value); + } +} + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/mpeg/psi/descs_list.h b/mpeg/psi/descs_list.h index 8a2b938..53dc7bd 100644 --- a/mpeg/psi/descs_list.h +++ b/mpeg/psi/descs_list.h @@ -45,5 +45,6 @@ #include #include #include +#include #endif diff --git a/mpeg/psi/descs_print.h b/mpeg/psi/descs_print.h index f975819..a3914f3 100644 --- a/mpeg/psi/descs_print.h +++ b/mpeg/psi/descs_print.h @@ -111,6 +111,7 @@ static inline void descl_print(uint8_t *p_descl, uint16_t i_length, CASE_DESC(0a) CASE_DESC(0b) CASE_DESC(0c) + CASE_DESC(0d) CASE_DESC_ICONV(40) CASE_DESC(41) CASE_DESC(43)