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author | Richard Knight <q@1bpm.net> | 2024-04-09 22:58:44 +0100 |
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committer | Richard Knight <q@1bpm.net> | 2024-04-09 22:58:44 +0100 |
commit | d4701791a2d04ff52bea456ebb34f4d79819f97e (patch) | |
tree | c582c6b10b271c550c9618cb0d818c5b27a98620 | |
download | csound-curl-d4701791a2d04ff52bea456ebb34f4d79819f97e.tar.gz csound-curl-d4701791a2d04ff52bea456ebb34f4d79819f97e.tar.bz2 csound-curl-d4701791a2d04ff52bea456ebb34f4d79819f97e.zip |
-rw-r--r-- | .gitignore | 1 | ||||
-rw-r--r-- | CMakeLists.txt | 203 | ||||
-rw-r--r-- | LICENCE | 502 | ||||
-rw-r--r-- | Plugin.cmake | 14 | ||||
-rw-r--r-- | README.md | 85 | ||||
-rw-r--r-- | cmake/CompilerOptimizations.cmake | 53 | ||||
-rw-r--r-- | cmake/Modules/FindCsound.cmake | 62 | ||||
-rw-r--r-- | examples/get.csd | 68 | ||||
-rw-r--r-- | examples/post.csd | 46 | ||||
-rw-r--r-- | include/handling.h | 53 | ||||
-rw-r--r-- | src/opcodes.cpp | 355 |
11 files changed, 1442 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..567609b --- /dev/null +++ b/.gitignore @@ -0,0 +1 @@ +build/ diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..612d056 --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,203 @@ +# from https://github.com/csound/plugins : common CMake operations +cmake_minimum_required(VERSION 2.8.12) +project(Csound-plugins) + +if (${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang") + set(CMAKE_COMPILER_IS_CLANG 1) +endif() + +# C++11 needed +if(NOT MSVC) + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11") +endif() + +set(APIVERSION "6.0") + +set(CMAKE_MACOSX_RPATH 1) +set(CMAKE_VERBOSE_MAKEFILE ON) +set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/") + +include(TestBigEndian) +include(CheckFunctionExists) +include(CheckCCompilerFlag) +include(CheckCXXCompilerFlag) + +### COMPILER OPTIMIZATION FLAGS +option(USE_COMPILER_OPTIMIZATIONS "Use the default Csound compiler optimization flags" ON) +if(USE_COMPILER_OPTIMIZATIONS) + include(${CMAKE_SOURCE_DIR}/cmake/CompilerOptimizations.cmake) +endif() + +if(APPLE) + set(OSX_VERSION " ") +endif() + +## USER OPTIONS ## +# Optional targets, they should all default to ON (check_deps will disable them if not possible to build) +option(USE_DOUBLE "Set to use double-precision floating point for audio samples." ON) +option(USE_LRINT "Use lrint/lrintf for converting floating point values to integers." ON) +option(BUILD_RELEASE "Build for release" ON) +option(USE_GIT_COMMIT "Show the git commit in version information" ON) + +# in Release configuration, set NDEBUG +if(${CMAKE_BUILD_TYPE} MATCHES "Release") +message("-----> Release mode") + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DNDEBUG") + set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DNDEBUG") +elseif(${CMAKE_BUILD_TYPE} MATCHES "Debug") +message("-----> Debug mode") + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DBETA") + set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DBETA") +endif() + +# set -Werror if in Debug configuration +if(NOT MSVC AND NOT WASM) + set(CMAKE_CXX_FLAGS_RELEASE "-O3 ") + set(CMAKE_C_FLAGS_RELEASE "-O3 ") + if(${CMAKE_BUILD_TYPE} MATCHES "Debug") + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Werror -Wno-missing-field-initializers") + set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Werror -Wno-missing-field-initializers") + endif() +endif() + + +if(CMAKE_SYSTEM_NAME MATCHES "Linux") + set(LINUX YES) +else() + set(LINUX NO) +endif() + +set(BUILD_DIR ${CMAKE_CURRENT_BINARY_DIR}) + +check_c_compiler_flag(-fvisibility=hidden HAS_VISIBILITY_HIDDEN) +check_cxx_compiler_flag(-fvisibility=hidden HAS_CXX_VISIBILITY_HIDDEN) +if (HAS_VISIBILITY_HIDDEN) + set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fvisibility=hidden") +endif() +if (HAS_CXX_VISIBILITY_HIDDEN) + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden") +endif() + +check_c_compiler_flag(-std=gnu99 HAS_GNU99) +if (HAS_GNU99) + set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99") +endif() +if (HAS_CXX_VISIBILITY_HIDDEN) + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden") +endif() + +find_package(Csound) + +option(USE_LIB64 "Set to on to set installation directory for libraries to lib64" OFF) +if(USE_LIB64) + set(LIBRARY_INSTALL_DIR "lib64") + add_definitions("-DLIB64") +else() + set(LIBRARY_INSTALL_DIR "lib") +endif() +message(STATUS "LIBRARY INSTALL DIR: ${LIBRARY_INSTALL_DIR}") + +if(USE_DOUBLE) + message(STATUS "Building with 64-bit floats") + set(PLUGIN_INSTALL_DIR "${LIBRARY_INSTALL_DIR}/csound/plugins64-${APIVERSION}") + if(APPLE) + set(PLUGIN_INSTALL_DIR "${CS_FRAMEWORK_DEST}/${CSOUNDLIB}.framework/Versions/${APIVERSION}/Resources/Opcodes64") + endif() +else() + message(STATUS "Building with 32-bit floats") + set(PLUGIN_INSTALL_DIR "${LIBRARY_INSTALL_DIR}/csound/plugins-${APIVERSION}") + if(APPLE) + set(PLUGIN_INSTALL_DIR "${CS_FRAMEWORK_DEST}/${CSOUNDLIB}.framework/Versions/${APIVERSION}/Resources/Opcodes") + endif() +endif() + + +# Checks if dependencies for an enabled target are fulfilled. +# If FAIL_MISSING is true and the dependencies are not fulfilled, +# it will abort the cmake run. +# If FAIL_MISSING is false, it will set the option to OFF. +# If the target is not enabled, it will do nothing. +# example: check_deps(BUILD_NEW_PARSER FLEX_EXECUTABLE BISON_EXECUTABLE) +function(check_deps option) + if(${option}) + set(i 1) + while( ${i} LESS ${ARGC} ) + set(dep ${ARGV${i}}) + if(NOT ${dep}) + if(FAIL_MISSING) + message(FATAL_ERROR + "${option} is enabled, but ${dep}=\"${${dep}}\"") + else() + message(STATUS "${dep}=\"${${dep}}\", so disabling ${option}") + set(${option} OFF PARENT_SCOPE) + # Set it in the local scope too + set(${option} OFF) + endif() + endif() + math(EXPR i "${i}+1") + endwhile() + endif() + if(${option}) + message(STATUS "${option} is enabled.") + else() + message(STATUS "${option} is disabled.") + endif() +endfunction(check_deps) + +# Utility function to make plugins. All plugin targets should use this as it +# sets up output directory set in top-level CmakeLists.txt +# and adds the appropriate install target +# +# libname - name of library to produce +# srcs - list of src files (must be quoted if a list) +# extralibs (OPTIONAL) - extra libraries to link the plugin to +# +# NB - this was moved here as it needs some VARS defined above +# for setting up the framework +function(make_plugin libname srcs) + if(APPLE) + add_library(${libname} SHARED ${srcs}) + else() + add_library(${libname} MODULE ${srcs}) + endif() + + set(i 2) + while( ${i} LESS ${ARGC} ) + target_link_libraries(${libname} ${ARGV${i}}) + math(EXPR i "${i}+1") + endwhile() + + set_target_properties(${libname} PROPERTIES + RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR} + LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR} + ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}) + + install(TARGETS ${libname} + LIBRARY DESTINATION "${PLUGIN_INSTALL_DIR}" + ARCHIVE DESTINATION "${PLUGIN_INSTALL_DIR}" ) +endfunction(make_plugin) + +# Linux does not have a separate libintl, it is part of libc +set(LIBINTL_AVAIL (LIBINTL_LIBRARY OR LINUX)) + +if(LINUX) + message(STATUS "Building on Linux.") + add_definitions(-DLINUX -DPIPES -D_GNU_SOURCE -DHAVE_SOCKETS) + list(APPEND libcsound_LIBS ${MATH_LIBRARY} dl) + +endif() + +if(APPLE AND NOT IOS) + message(STATUS "Building on OSX") + add_definitions(-DMACOSX -DPIPES -DNO_FLTK_THREADS -DHAVE_SOCKETS) + find_library(ACCELERATE_LIBRARY Accelerate) + find_path(VECLIB_PATH "Accelerate/Accelerate.h") + include_directories(${VECLIB_PATH}) + list(APPEND libcsound_LIBS ${MATH_LIBRARY} dl ${ACCELERATE_LIBRARY}) +endif() + +if(WIN32) + add_definitions(-DWIN32) +endif() + +include(Plugin.cmake) @@ -0,0 +1,502 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. 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IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN +WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY +AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU +FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR +CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE +LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING +RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A +FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF +SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH +DAMAGES. + + END OF TERMS AND CONDITIONS +^L + How to Apply These Terms to Your New Libraries + + If you develop a new library, and you want it to be of the greatest +possible use to the public, we recommend making it free software that +everyone can redistribute and change. You can do so by permitting +redistribution under these terms (or, alternatively, under the terms of the +ordinary General Public License). + + To apply these terms, attach the following notices to the library. It is +safest to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least the +"copyright" line and a pointer to where the full notice is found. + + <one line to give the library's name and a brief idea of what it does.> + Copyright (C) <year> <name of author> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the library, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + <signature of Ty Coon>, 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! diff --git a/Plugin.cmake b/Plugin.cmake new file mode 100644 index 0000000..53368aa --- /dev/null +++ b/Plugin.cmake @@ -0,0 +1,14 @@ +set(PLUGIN_NAME curl) +set(LIBS "") +set(INCLUDES ${CSOUND_INCLUDE_DIRS} "include") + +# Dependencies +find_package(CURL) +check_deps(CURL_FOUND) +list(APPEND LIBS ${CURL_LIBRARIES}) +list(APPEND INCLUDES ${CURL_INCLUDE_DIRS}) + +# Source files +set(CPPFILES src/opcodes.cpp) +make_plugin(${PLUGIN_NAME} "${CPPFILES}") +target_include_directories(${PLUGIN_NAME} PRIVATE ${INCLUDES}) diff --git a/README.md b/README.md new file mode 100644 index 0000000..0645267 --- /dev/null +++ b/README.md @@ -0,0 +1,85 @@ +# csound-curl : simple HTTP GET and POST requests from Csound + +## Overview +csound-curl provides opcodes to perform basic HTTP GET and POST requests at init time and k-rate. SSL hosts are supported. It can be used with the csound-json plugin opcodes in order to effectively communicate with web services and such. + +## Requirements +* Cmake >= 2.8.12 +* Csound with development headers >= 6.14.0 +* libCURL >= 7.26.0 + + + +## Installation +Create a build directory at the top of the source tree, execute *cmake ..*, *make* and optionally *make install* as root. If the latter is not used/possible then the resulting library can be used with the *--opcode-lib* flag in Csound. +eg: + + mkdir build && cd build + cmake .. + make && sudo make install + +Cmake should find Csound and any other required libraries using the modules in the cmake/Modules directory and installation should be as simple as above. + +## Examples +Some examples are provided in the examples directory. + + +## Opcode reference +Due to possible delays incurred by network processes, the init-time opcodes may interrupt any current activity in Csound. For example, audio may be subject to dropouts. As a result it may be ideal only to use the init time opcodes at performance initialisation, and use the k-rate opcodes if requests are required during performance. + + +### ires, Sres curlget Surl +Perform a GET request at init time. + +* ires : HTTP response code +* Sres : response body + +* Surl : URL to request + + +### ires, Sres curlpost Surl, SpostData +Perform a POST request at init time. + +* ires : HTTP response code +* Sres : response body + +* Surl : URL to request +* SpostData : data to post, should be URL encoded if required + + +### kdone, kres, Sres curlgetk Surl +Perform a GET request at k-rate. + +* kdone : trigger to specify if the request has completed (1 if so, 0 at all other times) +* kres : HTTP response code +* Sres : response body + +* Surl : URL to request + + +### kdone, kres, Sres curlpostk Surl, SpostData +Perform a POST request at k-rate. + +* kdone : trigger to specify if the request has completed (1 if so, 0 at all other times) +* kres : HTTP response code +* Sres : response body + +* Surl : URL to request +* SpostData : data to post, should be URL encoded if required + + +### Sencoded curlurlencode Sinput +URL encode a string at init time. + +* Sinput : the string to be encoded + +* Sencoded : the encoded string + + +### Sencoded curlurlencodek Sinput, ktrigger +URL encode a string at k-rate upon receipt of a trigger. + +* Sinput : the string to be encoded +* ktrigger : encode the string when this is set to 1 + +* Sencoded : the encoded string
\ No newline at end of file diff --git a/cmake/CompilerOptimizations.cmake b/cmake/CompilerOptimizations.cmake new file mode 100644 index 0000000..543daf8 --- /dev/null +++ b/cmake/CompilerOptimizations.cmake @@ -0,0 +1,53 @@ +
+check_c_compiler_flag(-ftree-vectorize HAS_TREE_VECTORIZE)
+check_cxx_compiler_flag(-ftree-vectorize HAS_CXX_TREE_VECTORIZE)
+if (HAS_TREE_VECTORISE)
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ftree-vectorize")
+endif()
+if (HAS_CXX_TREE_VECTORISE)
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ftree-vectorize")
+endif()
+
+
+check_c_compiler_flag(-ffast-math HAS_FAST_MATH)
+check_cxx_compiler_flag(-ffast-math HAS_CXX_FAST_MATH)
+if (HAS_FAST_MATH AND NOT MINGW)
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ffast-math")
+endif()
+if (HAS_CXX_FAST_MATH AND NOT MINGW)
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ffast-math")
+endif()
+
+
+
+if(NOT "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+check_c_compiler_flag(-mfpmath=sse HAS_FPMATH_SSE)
+check_cxx_compiler_flag(-mfpmath=sse HAS_CXX_FPMATH_SSE)
+ if (HAS_FPMATH_SSE)
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfpmath=sse")
+endif()
+if (HAS_CXX_FPMATH_SSE)
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpmath=sse")
+endif()
+
+endif()
+
+
+check_c_compiler_flag(-msse2 HAS_SSE2)
+check_cxx_compiler_flag(-msse2 HAS_CXX_SSE2)
+ if (HAS_SSE2 AND NOT IOS AND NOT WASM)
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -msse2")
+endif()
+if (HAS_CXX_SSE2 AND NOT IOS AND NOT WASM)
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse2")
+endif()
+
+
+check_c_compiler_flag(-fomit-frame-pointer HAS_OMIT_FRAME_POINTER)
+check_cxx_compiler_flag(-fomit-frame-pointer HAS_CXX_OMIT_FRAME_POINTER)
+if (HAS_OMIT_FRAME_POINTER)
+ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fomit-frame-pointer")
+endif()
+if (HAS_CXX_OMIT_FRAME_POINTER)
+ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fomit-frame-pointer")
+endif()
diff --git a/cmake/Modules/FindCsound.cmake b/cmake/Modules/FindCsound.cmake new file mode 100644 index 0000000..24c90d9 --- /dev/null +++ b/cmake/Modules/FindCsound.cmake @@ -0,0 +1,62 @@ +# Try to find the Csound library. +# Once done this will define: +# CSOUND_FOUND - System has the Csound library +# CSOUND_INCLUDE_DIRS - The Csound include directories. +# CSOUND_LIBRARIES - The libraries needed to use the Csound library. + +# RKnight 2021-07-21 : quick copy paste hack to deal with 32 bit if not using double + +if(USE_DOUBLE) + # 64 bit + if(APPLE) + find_path(CSOUND_INCLUDE_DIR csound.h HINTS /Library/Frameworks/CsoundLib64.framework/Headers + "$ENV{HOME}/Library/Frameworks/CsoundLib64.framework/Headers") + elseif(WIN32) + find_path(CSOUND_INCLUDE_DIR csound.h PATH_SUFFIXES csound + HINTS "c:\\Program Files\\Csound6_x64\\include") + else() + find_path(CSOUND_INCLUDE_DIR csound.h PATH_SUFFIXES csound) + endif() + + if(APPLE) + find_library(CSOUND_LIBRARY NAMES CsoundLib64 HINTS /Library/Frameworks/CsoundLib64.framework/ + "$ENV{HOME}/Library/Frameworks/CsoundLib64.framework") + elseif(WIN32) + find_library(CSOUND_LIBRARY NAMES csound64 HINTS "c:\\Program Files\\Csound6_x64\\lib") + else() + find_library(CSOUND_LIBRARY NAMES csound64 csound) + endif() + +else() + # 32 bit + if(APPLE) + find_path(CSOUND_INCLUDE_DIR csound.h HINTS /Library/Frameworks/CsoundLib.framework/Headers + "$ENV{HOME}/Library/Frameworks/CsoundLib.framework/Headers") + elseif(WIN32) + find_path(CSOUND_INCLUDE_DIR csound.h PATH_SUFFIXES csound + HINTS "c:\\Program Files (x86)\\Csound6\\include") + else() + find_path(CSOUND_INCLUDE_DIR csound.h PATH_SUFFIXES csound) + endif() + + if(APPLE) + find_library(CSOUND_LIBRARY NAMES CsoundLib HINTS /Library/Frameworks/CsoundLib.framework/ + "$ENV{HOME}/Library/Frameworks/CsoundLib.framework") + elseif(WIN32) + find_library(CSOUND_LIBRARY NAMES csound HINTS "c:\\Program Files (x86)\\Csound6\\lib") + else() + find_library(CSOUND_LIBRARY NAMES csound csound) + endif() + +endif() + + +include(FindPackageHandleStandardArgs) +# handle the QUIETLY and REQUIRED arguments and set CSOUND_FOUND to TRUE +# if all listed variables are TRUE +find_package_handle_standard_args(CSOUND + CSOUND_LIBRARY CSOUND_INCLUDE_DIR) +mark_as_advanced(CSOUND_INCLUDE_DIR CSOUND_LIBRARY) + +set(CSOUND_INCLUDE_DIRS ${CSOUND_INCLUDE_DIR}) +set(CSOUND_LIBRARIES ${CSOUND_LIBRARY} ) diff --git a/examples/get.csd b/examples/get.csd new file mode 100644 index 0000000..d373025 --- /dev/null +++ b/examples/get.csd @@ -0,0 +1,68 @@ +<CsoundSynthesizer> +<CsOptions> +-odac +</CsOptions> +<CsInstruments> +sr = 44100 +kr = 4410 +nchnls = 2 +0dbfs = 1 + +; basic oscillator to see how audio is affected +instr oscil + a1 oscil 0.1, 440 + outs a1, a1 +endin + + +; test the URL encoding opcode by encoding a string and printing +instr urlencode + Sinput = "<&>!>" + Sencoded curlurlencode Sinput + prints sprintf("Encoding '%s' to: ", Sinput) + + ; output contains % which confuses prints. So loop through and print each character accordingly + index = 0 + while (index < strlen(Sencoded)) do + Schar = strsub(Sencoded, index, index + 1) + if (strcmp(Schar, "%") == 0) then + Schar = "%%" + endif + prints Schar + index += 1 + od + prints "\n\n" + turnoff +endin + + +; issue a GET request at init time and display the output +instr irate + prints "init time get: may cause audio dropout\n\n" + ires, Sres curlget "http://csound.1bpm.net/_curl_plugin_example/get" + print ires + prints Sres + prints "\n" + turnoff +endin + + +; issue a GET request at k-rate and display the output +instr krate + prints "k-rate threaded get: should not affect audio\n\n" + kdone, kres, Sres curlgetk "http://csound.1bpm.net/_curl_plugin_example/get" + if (kdone == 1) then + printf "res %d ; %s\n", kdone, kres, Sres + turnoff + endif +endin + +</CsInstruments> +<CsScore> +i"oscil" 0 5 +i"urlencode" 0 1 +i"irate" 1 1 +i"krate" 3 1 +</CsScore> +</CsoundSynthesizer> + diff --git a/examples/post.csd b/examples/post.csd new file mode 100644 index 0000000..21535bd --- /dev/null +++ b/examples/post.csd @@ -0,0 +1,46 @@ +<CsoundSynthesizer> +<CsOptions> +-odac +</CsOptions> +<CsInstruments> +sr = 44100 +kr = 4410 +nchnls = 2 +0dbfs = 1 + +; basic oscillator to see how audio is affected +instr oscil + a1 oscil 0.1, 440 + outs a1, a1 +endin + + +; issue a POST request at init time and display the output +instr irate + prints "init time post: may cause audio dropout\n\n" + ires, Sres curlpost "http://csound.1bpm.net/_curl_plugin_example/post", "Hello from Csound" + print ires + prints Sres + prints "\n" + turnoff +endin + + +; issue a POST request at k-rate and display the output +instr krate + prints "k-rate threaded post: should not affect audio\n\n" + kdone, kres, Sres curlpostk "http://csound.1bpm.net/_curl_plugin_example/post", "Hello from Csound" + if (kdone == 1) then + printf "res %d ; %s\n", kdone, kres, Sres + turnoff + endif +endin + +</CsInstruments> +<CsScore> +i"oscil" 0 5 +i"irate" 1 1 +i"krate" 3 1 +</CsScore> +</CsoundSynthesizer> + diff --git a/include/handling.h b/include/handling.h new file mode 100644 index 0000000..c5e0691 --- /dev/null +++ b/include/handling.h @@ -0,0 +1,53 @@ +/* + handling.h + Copyright (C) 2021 Richard Knight + + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 3 of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + + */ +#include <plugin.h> + +const char* handleIdentifier = "::%s%d"; + +/* + * Obtain global object of typename from global variables by handle + */ +template <typename T> +T* getHandle(csnd::Csound* csound, MYFLT handle, const char* name) { + char buffer[32]; + snprintf(buffer, 32, handleIdentifier, name, (int)handle); + return (T*) csound->query_global_variable(buffer); +} + + +/* + * Create global object of typename in global variables, returning handle + */ +template <typename T> +MYFLT createHandle(csnd::Csound* csound, T** data, const char* name) { + char buffer[32]; + int handle = 0; + snprintf(buffer, 32, handleIdentifier, name, handle); + while ((*data = (T*) csound->query_global_variable(buffer)) != NULL) { + snprintf(buffer, 32, handleIdentifier, name, ++handle); + } + csound->create_global_variable(buffer, sizeof(T)); + *data = (T*) csound->query_global_variable(buffer); + + return FL(handle); +} + + diff --git a/src/opcodes.cpp b/src/opcodes.cpp new file mode 100644 index 0000000..5f27f60 --- /dev/null +++ b/src/opcodes.cpp @@ -0,0 +1,355 @@ +#include <plugin.h> +#include "handling.h" +#include <curl/curl.h> +#include <atomic> + +const char* ciniterror = "cannot initialise CURL"; + +static size_t write_callback(void* contents, size_t size, size_t nmemb, void *userp) { + ((std::string*)userp)->append((char*)contents, size * nmemb); + return size * nmemb; +} + +class HTTPRequest { +private: + csnd::Csound* csound; + CURL* curl; + char* url; + + void curl_reset() { + curl_easy_reset(curl); + curl_easy_setopt(curl, CURLOPT_URL, url); + curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback); + curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response); + curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L); + curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L); + } + +public: + CURLcode curlResult; + char* curlError; + long httpResponseCode; + std::string response; + + HTTPRequest(csnd::Csound* csound, char* url) : + csound(csound), + url(url) + { + + curl_global_init(CURL_GLOBAL_ALL); + curl = curl_easy_init(); + if (!curl) { + curl_global_cleanup(); + throw std::runtime_error((char*) ciniterror); + } + + + } + + ~HTTPRequest() { + curl_easy_cleanup(curl); + curl_global_cleanup(); + } + + void post(char* postdata) { + curl_reset(); + curl_easy_setopt(curl, CURLOPT_POSTFIELDS, postdata); + curlResult = curl_easy_perform(curl); + if (curlResult != CURLE_OK) { + curlError = (char*) curl_easy_strerror(curlResult); + } + curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &httpResponseCode); + } + + void get() { + curl_reset(); + curlResult = curl_easy_perform(curl); + if (curlResult != CURLE_OK) { + curlError = (char*) curl_easy_strerror(curlResult); + } + curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &httpResponseCode); + } + + +}; + + +class RequestThread : public csnd::Thread { + std::atomic_bool spinlock; + std::atomic_bool on; + int sleepTime; +public: + HTTPRequest* req; + char* postdata; + bool dopost; + char* error; + bool errored; + bool done; + bool pending; + RequestThread(csnd::Csound* csound, char* url, bool dopost, char* postdata=NULL) : + Thread(csound), + done(false), + pending(false), + on(true), + spinlock(false), + postdata(postdata), + dopost(dopost), + sleepTime(10) + { + try { + req = new HTTPRequest(csound, url); + } catch (const std::exception &e) { + errored = true; + error = csound->strdup(req->curlError); + } + }; + + uintptr_t run() { + while (on) { + lock(); + if (pending) { + try { + if (dopost) { + req->post(postdata); + } else { + req->get(); + } + + if (req->curlResult != CURLE_OK) { + errored = true; + error = csound->strdup(req->curlError); + } + + done = true; + pending = false; + } catch (const std::exception &e) { + errored = true; + done = true; + pending = false; + error = csound->strdup((char*) e.what()); + } + } + unlock(); + csound->sleep(sleepTime); + } + return 0; + } + + void lock() { + while (spinlock == true) { + csound->sleep(sleepTime); + } + spinlock = true; + } + + void unlock() { + spinlock = false; + } + + void stop() { + on = false; + } +}; + + +struct curlpostk : csnd::Plugin<3, 2> { + static constexpr char const *otypes = "kkS"; + static constexpr char const *itypes = "SS"; + RequestThread request; + + int init() { + csound->plugin_deinit(this); + STRINGDAT &url = inargs.str_data(0); + STRINGDAT &postdata = inargs.str_data(1); + csnd::constr(&request, csound, url.data, true, postdata.data); + return OK; + } + + int deinit() { + request.stop(); + request.join(); + csnd::destr(&request); + return OK; + } + + int kperf() { + outargs[0] = FL(0); + if (request.done) { + if (request.errored) { + return csound->perf_error(request.error, this); + } + outargs[0] = FL(1); + } else if (!request.pending) { + request.lock(); + request.pending = true; + request.unlock(); + } + outargs[1] = (MYFLT) request.req->httpResponseCode; + STRINGDAT &resultstring = outargs.str_data(2); + resultstring.data = csound->strdup((char*) request.req->response.c_str()); + resultstring.size = request.req->response.size(); + return OK; + } +}; + + +struct curlgetk : csnd::Plugin<3, 1> { + static constexpr char const *otypes = "kkS"; + static constexpr char const *itypes = "S"; + RequestThread request; + + int init() { + csound->plugin_deinit(this); + STRINGDAT &url = inargs.str_data(0); + csnd::constr(&request, csound, url.data, false); + return OK; + } + + int deinit() { + request.stop(); + request.join(); + csnd::destr(&request); + return OK; + } + + int kperf() { + outargs[0] = FL(0); + if (request.done) { + if (request.errored) { + return csound->perf_error(request.error, this); + } + outargs[0] = FL(1); + } else if (!request.pending) { + request.lock(); + request.pending = true; + request.unlock(); + } + outargs[1] = (MYFLT) request.req->httpResponseCode; + STRINGDAT &resultstring = outargs.str_data(2); + resultstring.data = csound->strdup((char*) request.req->response.c_str()); + resultstring.size = request.req->response.size(); + return OK; + } +}; + + + +struct curlpost : csnd::Plugin<2, 2> { + static constexpr char const *otypes = "iS"; + static constexpr char const *itypes = "SS"; + + int init() { + STRINGDAT &url = inargs.str_data(0); + STRINGDAT &postdata = inargs.str_data(1); + + HTTPRequest* req; + try { + req = new HTTPRequest(csound, url.data); + } catch (const std::exception &e) { + csound->init_error(csound->strdup((char*) e.what())); + } + + req->post(postdata.data); + + if (req->curlResult != CURLE_OK) { + return csound->init_error(csound->strdup(req->curlError)); + } + + outargs[0] = (MYFLT) req->httpResponseCode; + STRINGDAT &resultstring = outargs.str_data(1); + resultstring.data = csound->strdup((char*) req->response.c_str()); + resultstring.size = req->response.size(); + + return OK; + } + +}; + + +struct curlget : csnd::Plugin<2, 1> { + static constexpr char const *otypes = "iS"; + static constexpr char const *itypes = "S"; + + int init() { + STRINGDAT &url = inargs.str_data(0); + + HTTPRequest* req; + try { + req = new HTTPRequest(csound, url.data); + } catch (const std::exception &e) { + csound->init_error(csound->strdup((char*) e.what())); + } + + req->get(); + + if (req->curlResult != CURLE_OK) { + return csound->init_error(csound->strdup(req->curlError)); + } + + outargs[0] = (MYFLT) req->httpResponseCode; + STRINGDAT &resultstring = outargs.str_data(1); + resultstring.data = csound->strdup((char*) req->response.c_str()); + resultstring.size = req->response.size(); + + return OK; + } + +}; + + +struct curlurlencode : csnd::Plugin<1, 1> { + static constexpr char const *otypes = "S"; + static constexpr char const *itypes = "S"; + + int init() { + CURL* curl = curl_easy_init(); + STRINGDAT &input = inargs.str_data(0); + STRINGDAT &output = outargs.str_data(0); + char* encoded = curl_easy_escape(curl, input.data, strlen(input.data)); + output.data = csound->strdup(encoded); + output.size = strlen(output.data); + curl_free(encoded); + curl_easy_cleanup(curl); + return OK; + } +}; + +struct curlurlencodek : csnd::Plugin<1, 2> { + static constexpr char const *otypes = "S"; + static constexpr char const *itypes = "Sk"; + CURL* curl; + + int init() { + csound->plugin_deinit(this); + curl = curl_easy_init(); + return OK; + } + + int kperf() { + if (inargs[1] == 1) { + STRINGDAT &input = inargs.str_data(0); + STRINGDAT &output = outargs.str_data(0); + char* encoded = curl_easy_escape(curl, input.data, strlen(input.data)); + output.data = csound->strdup(encoded); + output.size = strlen(output.data); + curl_free(encoded); + } + return OK; + } + + int deinit() { + curl_easy_cleanup(curl); + return OK; + } +}; + + +#include <modload.h> +void csnd::on_load(csnd::Csound *csound) { + csnd::plugin<curlpost>(csound, "curlpost", csnd::thread::i); + csnd::plugin<curlget>(csound, "curlget", csnd::thread::i); + csnd::plugin<curlpostk>(csound, "curlpostk", csnd::thread::ik); + csnd::plugin<curlgetk>(csound, "curlgetk", csnd::thread::ik); + csnd::plugin<curlurlencode>(csound, "curlurlencode", csnd::thread::i); + csnd::plugin<curlurlencodek>(csound, "curlurlencodek", csnd::thread::ik); +} |