diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/lib/tng_io.c | 146 | ||||
| -rw-r--r-- | src/lib/tng_io.h | 25 |
2 files changed, 171 insertions, 0 deletions
diff --git a/src/lib/tng_io.c b/src/lib/tng_io.c index f2a0e3f..7055b8d 100644 --- a/src/lib/tng_io.c +++ b/src/lib/tng_io.c @@ -7021,6 +7021,140 @@ tng_function_status tng_output_file_set(tng_trajectory_t tng_data, return(tng_output_file_init(tng_data)); } +tng_function_status tng_output_file_endianness_get + (tng_trajectory_t tng_data, tng_file_endianness *endianness) +{ + tng_endianness_32 end_32; + tng_endianness_64 end_64; + + if(tng_data->output_endianness_swap_func_32) + { + /* If other endianness variants are added they must be added here as well */ + if(tng_data->output_endianness_swap_func_32 == + &tng_swap_byte_order_big_endian_32) + { + end_32 = TNG_BIG_ENDIAN_32; + } + else if(tng_data->output_endianness_swap_func_32 == + &tng_swap_byte_order_little_endian_32) + { + end_32 = TNG_LITTLE_ENDIAN_32; + } + else + { + return(TNG_FAILURE); + } + } + else + { + end_32 = tng_data->endianness_32; + } + + if(tng_data->output_endianness_swap_func_64) + { + /* If other endianness variants are added they must be added here as well */ + if(tng_data->output_endianness_swap_func_64 == + &tng_swap_byte_order_big_endian_64) + { + end_64 = TNG_BIG_ENDIAN_64; + } + else if(tng_data->output_endianness_swap_func_64 == + &tng_swap_byte_order_little_endian_64) + { + end_64 = TNG_LITTLE_ENDIAN_64; + } + else + { + return(TNG_FAILURE); + } + } + else + { + end_64 = tng_data->endianness_64; + } + + if(end_32 != end_64) + { + return(TNG_FAILURE); + } + + if(end_32 == TNG_LITTLE_ENDIAN_32) + { + *endianness = TNG_LITTLE_ENDIAN; + } + + else if(end_32 == TNG_BIG_ENDIAN_32) + { + *endianness = TNG_BIG_ENDIAN; + } + else + { + return(TNG_FAILURE); + } + + return(TNG_SUCCESS); +} + +tng_function_status tng_output_file_endianness_set + (tng_trajectory_t tng_data, + const tng_file_endianness endianness) +{ + /* Tne endianness cannot be changed if the data has already been written + * to the output file. */ + if(ftell(tng_data->output_file) > 0) + { + return(TNG_FAILURE); + } + + if(endianness == TNG_BIG_ENDIAN) + { + if(tng_data->endianness_32 == TNG_BIG_ENDIAN_32) + { + tng_data->output_endianness_swap_func_32 = 0; + } + else + { + tng_data->output_endianness_swap_func_32 = + &tng_swap_byte_order_big_endian_32; + } + if(tng_data->endianness_64 == TNG_BIG_ENDIAN_64) + { + tng_data->output_endianness_swap_func_64 = 0; + } + else + { + tng_data->output_endianness_swap_func_64 = + &tng_swap_byte_order_big_endian_64; + } + return(TNG_SUCCESS); + } + else if(endianness == TNG_LITTLE_ENDIAN) + { + if(tng_data->endianness_32 == TNG_LITTLE_ENDIAN_32) + { + tng_data->output_endianness_swap_func_32 = 0; + } + else + { + tng_data->output_endianness_swap_func_32 = + &tng_swap_byte_order_little_endian_32; + } + if(tng_data->endianness_64 == TNG_LITTLE_ENDIAN_64) + { + tng_data->output_endianness_swap_func_64 = 0; + } + else + { + tng_data->output_endianness_swap_func_64 = + &tng_swap_byte_order_little_endian_64; + } + return(TNG_SUCCESS); + } + + /* If the specified endianness is neither big nor little endian return a + * failure. */ + return(TNG_FAILURE); +} tng_function_status tng_first_program_name_get(const tng_trajectory_t tng_data, char *name, const int max_len) @@ -11091,6 +11225,18 @@ tng_function_status tng_first_program_name_get_(const tng_trajectory_t tng_data, return(tng_first_program_name_get(tng_data, name, max_len)); } +tng_function_status tng_output_file_endianness_get_ + (tng_trajectory_t tng_data, tng_file_endianness *endianness) +{ + return(tng_output_file_endianness_get(tng_data, endianness)); +} + +tng_function_status tng_output_file_endianness_set_ + (tng_trajectory_t tng_data, const tng_file_endianness *endianness) +{ + return(tng_output_file_endianness_set(tng_data, *endianness)); +} + tng_function_status tng_first_program_name_set_(tng_trajectory_t tng_data, const char *new_name, int name_len) diff --git a/src/lib/tng_io.h b/src/lib/tng_io.h index 031ca65..00110e9 100644 --- a/src/lib/tng_io.h +++ b/src/lib/tng_io.h @@ -454,6 +454,31 @@ tng_function_status tng_output_file_set(tng_trajectory_t tng_data, const char *file_name); /** + * @brief Get the endianness of the output file. + * @param tng_data the trajectory of which to get the endianness of the current + * output file. + * @param endianness will contain the enumeration of the endianness. + * @return TNG_SUCCESS (0) if successful or TNG_FAILURE (1) if the endianness + * could not be retrieved. + */ +tng_function_status tng_output_file_endianness_get + (tng_trajectory_t tng_data, tng_file_endianness *endianness); + +/** + * @brief Set the endianness of the output file. + * @param tng_data the trajectory of which to set the endianness of the current + * output file. + * @param endianness the enumeration of the endianness, can be either + * TNG_BIG_ENDIAN (0) or TNG_LITTLE_ENDIAN (1). + * @details The endianness cannot be changed after file output has started. + * @return TNG_SUCCESS (0) if successful or TNG_FAILURE (1) if the endianness + * could not be set. + */ +tng_function_status tng_output_file_endianness_set + (tng_trajectory_t tng_data, + const tng_file_endianness endianness); + +/** * @brief Get the name of the program used when creating the trajectory. * @param tng_data the trajectory of which to get the program name. * @param name the string to fill with the name of the program, |