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https://git.vladimir.cc/vladimir/libewsdr_dmr.git
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# Out-of-source CMake/Jenkins builds when this directory is used as WORKSPACE.
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/build/
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/build-*/
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/install/
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/install-*/
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/deps/
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# Accidental in-source CMake builds.
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/CMakeCache.txt
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/CMakeFiles/
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/cmake_install.cmake
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/install_manifest.txt
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/Makefile
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/CTestTestfile.cmake
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/compile_commands.json
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/.ninja_*
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/*.ninja
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# Native build products created directly in this directory.
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/*.dll
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/*.dll.a
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/*.so
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/*.so.*
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/*.dylib
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/*.a
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/*.o
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/*.obj
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/*.pdb
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cmake_minimum_required(VERSION 3.10)
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project(ewsdr_dmr C)
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find_path(MBELIB_INCLUDE_DIR mbelib.h REQUIRED)
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find_library(MBELIB_LIBRARY NAMES mbe REQUIRED)
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add_library(ewsdr_dmr SHARED ewsdr_dmr.c)
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target_compile_definitions(ewsdr_dmr PRIVATE EWSDR_DMR_BUILD)
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target_include_directories(ewsdr_dmr
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PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}
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PRIVATE ${MBELIB_INCLUDE_DIR})
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target_link_libraries(ewsdr_dmr PRIVATE ${MBELIB_LIBRARY})
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set_target_properties(ewsdr_dmr PROPERTIES
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C_VISIBILITY_PRESET hidden
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VISIBILITY_INLINES_HIDDEN YES)
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# DMRBindings.pas loads this exact name. MinGW otherwise adds the Unix-style
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# "lib" prefix to DLLs (libewsdr_dmr.dll).
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if(WIN32)
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set_target_properties(ewsdr_dmr PROPERTIES PREFIX "")
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endif()
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include(GNUInstallDirs)
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install(TARGETS ewsdr_dmr
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LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
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ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
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RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
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install(FILES ewsdr_dmr.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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# EWSDR DMR native adapter
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This optional shared library isolates `mbelib` and the imported DMR core from
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the Lazarus application. It intentionally does not depend on PulseAudio,
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ncurses, libsndfile or the DSD-FME command-line frontend.
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Build on Linux:
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```sh
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cmake -S native/dmr -B build/dmr -DCMAKE_BUILD_TYPE=Release
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cmake --build build/dmr
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```
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The Pascal burst/FEC layer extracts three row-major `char[4][24]` AMBE+2
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frames from each selected voice-slot burst and feeds them through this ABI.
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Decoded 8 kHz mono PCM is resampled to EWSDR's 48 kHz speaker/web route.
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For a build-tree run, either copy `libewsdr_dmr.so` beside the EWSDR executable
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or add `build/dmr` to `LD_LIBRARY_PATH`. `cmake --install build/dmr` installs the
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adapter system-wide. The GUI and daemon remain usable (with metadata but no
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voice) when this optional library is absent.
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## Jenkins cross-build for Windows x64
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Use `jenkins/build-mbelib-win64.sh` in a Jenkins job that checks out mbelib.
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It creates `install-win64` with `mbelib.h`, the import library, `libmbe.dll`,
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and the MinGW runtime DLLs.
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Configure the mbelib job to archive `install-win64/**`. In the EWSDR job, copy
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that artifact to `deps/mbelib` and then run
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`native/dmr/jenkins/build-ewsdr-dmr-win64.sh` before `lazbuild`. The script
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expects the resulting prefix at
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`$WORKSPACE/deps/mbelib/install-win64`, builds from
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`$WORKSPACE/native/dmr`, and stages the DLL bundle in
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`$WORKSPACE/bin/x86_64-win64` beside the future `ewsdr.exe`. All paths can be
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overridden with environment variables.
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Declarative/Scripted Pipeline example for the artifact transfer:
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```groovy
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copyArtifacts(
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projectName: 'mbelib',
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selector: lastSuccessful(),
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filter: 'install-win64/**',
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target: 'deps/mbelib'
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)
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sh 'native/dmr/jenkins/build-ewsdr-dmr-win64.sh'
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```
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+86
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#include "ewsdr_dmr.h"
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#include <mbelib.h>
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#include <stdlib.h>
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#include <string.h>
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struct ewsdr_dmr_mbe {
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mbe_parms current;
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mbe_parms previous;
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mbe_parms previous_enhanced;
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int uv_quality;
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};
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uint32_t ewsdr_dmr_abi_version(void)
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{
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return EWSDR_DMR_ABI_VERSION;
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}
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void ewsdr_dmr_mbe_reset(ewsdr_dmr_mbe *decoder)
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{
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if (decoder == NULL)
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return;
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mbe_initMbeParms(&decoder->current, &decoder->previous,
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&decoder->previous_enhanced);
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}
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ewsdr_dmr_mbe *ewsdr_dmr_mbe_create(int uv_quality)
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{
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ewsdr_dmr_mbe *decoder = calloc(1, sizeof(*decoder));
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if (decoder == NULL)
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return NULL;
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if (uv_quality < 1)
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uv_quality = 1;
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if (uv_quality > 64)
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uv_quality = 64;
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decoder->uv_quality = uv_quality;
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ewsdr_dmr_mbe_reset(decoder);
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return decoder;
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}
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void ewsdr_dmr_mbe_destroy(ewsdr_dmr_mbe *decoder)
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{
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if (decoder == NULL)
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return;
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memset(decoder, 0, sizeof(*decoder));
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free(decoder);
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}
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int ewsdr_dmr_mbe_decode(ewsdr_dmr_mbe *decoder,
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const uint8_t ambe_bits[EWSDR_DMR_AMBE_BITS],
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float pcm_out[EWSDR_DMR_PCM_SAMPLES],
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ewsdr_dmr_mbe_result *result)
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{
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char frame[4][24];
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char data[49];
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char error_text[64];
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int errors_c0 = 0;
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int errors_total = 0;
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size_t row;
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size_t col;
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if (decoder == NULL || ambe_bits == NULL || pcm_out == NULL)
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return -1;
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for (row = 0; row < 4; ++row) {
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for (col = 0; col < 24; ++col) {
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const uint8_t bit = ambe_bits[row * 24 + col];
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if (bit > 1)
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return -2;
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frame[row][col] = (char)bit;
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}
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}
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memset(data, 0, sizeof(data));
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memset(error_text, 0, sizeof(error_text));
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mbe_processAmbe3600x2450Framef(
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pcm_out, &errors_c0, &errors_total, error_text, frame, data,
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&decoder->current, &decoder->previous, &decoder->previous_enhanced,
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decoder->uv_quality);
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if (result != NULL) {
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result->errors_c0 = errors_c0;
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result->errors_total = errors_total;
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}
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return 0;
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}
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+53
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#ifndef EWSDR_DMR_H
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#define EWSDR_DMR_H
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#include <stddef.h>
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#include <stdint.h>
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#if defined(_WIN32)
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# if defined(EWSDR_DMR_BUILD)
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# define EWSDR_DMR_API __declspec(dllexport)
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# else
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# define EWSDR_DMR_API __declspec(dllimport)
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# endif
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#else
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# define EWSDR_DMR_API __attribute__((visibility("default")))
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define EWSDR_DMR_ABI_VERSION 1u
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#define EWSDR_DMR_AMBE_BITS 96u
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#define EWSDR_DMR_PCM_SAMPLES 160u
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typedef struct ewsdr_dmr_mbe ewsdr_dmr_mbe;
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typedef struct ewsdr_dmr_mbe_result {
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int errors_c0;
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int errors_total;
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} ewsdr_dmr_mbe_result;
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EWSDR_DMR_API uint32_t ewsdr_dmr_abi_version(void);
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EWSDR_DMR_API ewsdr_dmr_mbe *ewsdr_dmr_mbe_create(int uv_quality);
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EWSDR_DMR_API void ewsdr_dmr_mbe_destroy(ewsdr_dmr_mbe *decoder);
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EWSDR_DMR_API void ewsdr_dmr_mbe_reset(ewsdr_dmr_mbe *decoder);
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/*
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* Decode one already deinterleaved DMR AMBE+2 frame. ambe_bits is a row-major
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* char[4][24] matrix containing only 0/1 values. pcm_out receives 160 float
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* samples at 8 kHz. Frame extraction/deinterleaving remains in the DMR burst
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* layer, keeping mbelib and its state behind this stable ABI.
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*/
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EWSDR_DMR_API int ewsdr_dmr_mbe_decode(
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ewsdr_dmr_mbe *decoder,
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const uint8_t ambe_bits[EWSDR_DMR_AMBE_BITS],
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float pcm_out[EWSDR_DMR_PCM_SAMPLES],
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ewsdr_dmr_mbe_result *result);
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#ifdef __cplusplus
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}
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#endif
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#endif
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