/* Copyright (c) 2017 Christopher A. Taylor. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of Leopard-RS nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "leopard.h" #include "LeopardFF8.h" #include "LeopardFF16.h" extern "C" { //------------------------------------------------------------------------------ // Initialization API static bool m_Initialized = false; LEO_EXPORT int leo_init_(int version) { if (version != LEO_VERSION) return Leopard_InvalidInput; if (!leopard::ff8::Initialize()) return Leopard_Platform; if (!leopard::ff16::Initialize()) return Leopard_Platform; m_Initialized = true; return Leopard_Success; } //------------------------------------------------------------------------------ // Encoder API LEO_EXPORT unsigned leo_encode_work_count( unsigned original_count, unsigned recovery_count) { return leopard::NextPow2(recovery_count) * 2; } LEO_EXPORT LeopardResult leo_encode( uint64_t buffer_bytes, // Number of bytes in each data buffer unsigned original_count, // Number of original_data[] buffer pointers unsigned recovery_count, // Number of recovery_data[] buffer pointers unsigned work_count, // Number of work_data[] buffer pointers, from leo_encode_work_count() void* const * const original_data, // Array of pointers to original data buffers void** work_data, // Array of work buffers unsigned flags) // Operation flags { if (buffer_bytes <= 0 || buffer_bytes % 64 != 0) return Leopard_InvalidSize; if (recovery_count <= 0 || recovery_count > original_count) return Leopard_InvalidCounts; if (!original_data || !work_data) return Leopard_InvalidInput; const unsigned m = leopard::NextPow2(recovery_count); const unsigned n = leopard::NextPow2(m + original_count); if (work_count != m * 2) return Leopard_InvalidCounts; const bool mt = (flags & LeopardFlags_Multithreaded) != 0; if (n <= leopard::ff8::kOrder) { leopard::ff8::Encode( buffer_bytes, original_count, recovery_count, m, original_data, work_data); } else if (n <= leopard::ff16::kOrder) { leopard::ff16::Encode( buffer_bytes, original_count, recovery_count, m, original_data, work_data); } else return Leopard_TooMuchData; return Leopard_Success; } //------------------------------------------------------------------------------ // Decoder API LEO_EXPORT unsigned leo_decode_work_count( unsigned original_count, unsigned recovery_count) { const unsigned m = leopard::NextPow2(recovery_count); const unsigned n = leopard::NextPow2(m + original_count); return n; } LEO_EXPORT LeopardResult leo_decode( uint64_t buffer_bytes, // Number of bytes in each data buffer unsigned original_count, // Number of original_data[] buffer pointers unsigned recovery_count, // Number of recovery_data[] buffer pointers unsigned work_count, // Number of buffer pointers in work_data[] void* const * const original_data, // Array of original data buffers void* const * const recovery_data, // Array of recovery data buffers void** work_data, // Array of work data buffers unsigned flags) // Operation flags { if (buffer_bytes <= 0 || buffer_bytes % 64 != 0) return Leopard_InvalidSize; if (recovery_count <= 0 || recovery_count > original_count) return Leopard_InvalidCounts; if (!original_data || !recovery_data || !work_data) return Leopard_InvalidInput; const unsigned m = leopard::NextPow2(recovery_count); const unsigned n = leopard::NextPow2(m + original_count); if (work_count != n) return Leopard_InvalidCounts; const bool mt = (flags & LeopardFlags_Multithreaded) != 0; if (n <= leopard::ff8::kOrder) { leopard::ff8::Decode( buffer_bytes, original_count, recovery_count, m, n, original_data, recovery_data, work_data); } else if (n <= leopard::ff16::kOrder) { leopard::ff16::Decode( buffer_bytes, original_count, recovery_count, m, n, original_data, recovery_data, work_data); } else return Leopard_TooMuchData; return Leopard_Success; } } // extern "C"