mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-11-09 16:18:20 +00:00
[obs] implemented intial OBS Looking Glass Client plugin
Yes, it works! but no cursor support yet
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.gitignore
vendored
1
.gitignore
vendored
@ -7,3 +7,4 @@ module/modules.order
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*.a
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*.o
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*.exe
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*/build
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72
obs/CMakeLists.txt
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72
obs/CMakeLists.txt
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@ -0,0 +1,72 @@
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cmake_minimum_required(VERSION 3.0)
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project(looking-glass-obs C)
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set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake/")
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include(GNUInstallDirs)
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include(CheckCCompilerFlag)
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include(FeatureSummary)
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option(OPTIMIZE_FOR_NATIVE "Build with -march=native" ON)
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if(OPTIMIZE_FOR_NATIVE)
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CHECK_C_COMPILER_FLAG("-march=native" COMPILER_SUPPORTS_MARCH_NATIVE)
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if(COMPILER_SUPPORTS_MARCH_NATIVE)
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add_compile_options("-march=native")
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endif()
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endif()
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option(ENABLE_BACKTRACE "Enable backtrace support on crash" ON)
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add_feature_info(ENABLE_BACKTRACE ENABLE_BACKTRACE "Backtrace support.")
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add_compile_options(
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"-Wall"
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"-Werror"
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"-Wfatal-errors"
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"-ffast-math"
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"-fdata-sections"
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"-ffunction-sections"
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"-fpic"
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"$<$<CONFIG:DEBUG>:-O0;-g3;-ggdb>"
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)
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set(EXE_FLAGS "-Wl,--gc-sections")
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set(CMAKE_C_STANDARD 11)
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execute_process(
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COMMAND cat ../VERSION
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WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
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OUTPUT_VARIABLE BUILD_VERSION
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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add_definitions(-D BUILD_VERSION='"${BUILD_VERSION}"')
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add_definitions(-D ATOMIC_LOCKING)
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get_filename_component(PROJECT_TOP "${PROJECT_SOURCE_DIR}/.." ABSOLUTE)
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include_directories(
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${PROJECT_SOURCE_DIR}/include
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${CMAKE_BINARY_DIR}/include
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)
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link_libraries(
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${CMAKE_DL_LIBS}
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rt
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m
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)
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set(SOURCES
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main.c
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lg.c
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)
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add_subdirectory("${PROJECT_TOP}/common" "${CMAKE_BINARY_DIR}/common")
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add_subdirectory("${PROJECT_TOP}/LGMP/lgmp" "${CMAKE_BINARY_DIR}/lgmp")
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add_library(looking-glass-obs SHARED ${SOURCES})
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target_link_libraries(looking-glass-obs
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${EXE_FLAGS}
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lg_common
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lgmp
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)
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feature_summary(WHAT ENABLED_FEATURES DISABLED_FEATURES)
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232
obs/lg.c
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232
obs/lg.c
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#include <obs/obs-module.h>
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#include <common/ivshmem.h>
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#include <common/KVMFR.h>
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#include <common/framebuffer.h>
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#include <lgmp/client.h>
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#include <stdio.h>
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typedef struct
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{
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obs_source_t * context;
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bool valid;
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char * shmFile;
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uint32_t width, height;
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FrameType type;
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struct IVSHMEM shmDev;
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PLGMPClient lgmp;
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PLGMPClientQueue frameQueue;
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gs_texture_t * texture;
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}
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LGPlugin;
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static void lgUpdate(void * data, obs_data_t * settings);
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static const char * lgGetName(void * unused)
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{
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return obs_module_text("Looking Glass Client");
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}
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static void * lgCreate(obs_data_t * settings, obs_source_t * context)
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{
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LGPlugin * this = bzalloc(sizeof(LGPlugin));
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this->context = context;
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lgUpdate(this, settings);
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return this;
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}
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static void deinit(LGPlugin * this)
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{
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lgmpClientFree(&this->lgmp);
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if (this->shmFile)
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{
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bfree(this->shmFile);
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this->shmFile = NULL;
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}
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if (this->shmDev.mem)
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ivshmemClose(&this->shmDev);
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this->valid = false;
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}
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static void lgDestroy(void * data)
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{
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LGPlugin * this = (LGPlugin *)data;
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deinit(this);
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bfree(this);
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}
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static void lgGetDefaults(obs_data_t * defaults)
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{
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obs_data_set_default_string(defaults, "shmFile", "/dev/shm/looking-glass");
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}
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static obs_properties_t * lgGetProperties(void * data)
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{
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obs_properties_t * props = obs_properties_create();
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obs_properties_add_text(props, "shmFile", obs_module_text("SHM File"), OBS_TEXT_DEFAULT);
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return props;
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}
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static void lgUpdate(void * data, obs_data_t * settings)
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{
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LGPlugin * this = (LGPlugin *)data;
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deinit(this);
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this->shmFile = bstrdup(obs_data_get_string(settings, "shmFile"));
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if (!ivshmemOpenDev(&this->shmDev, this->shmFile))
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return;
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if (lgmpClientInit(this->shmDev.mem, this->shmDev.size, &this->lgmp) != LGMP_OK)
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return;
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if (lgmpClientSubscribe(this->lgmp, LGMP_Q_FRAME, &this->frameQueue) != LGMP_OK)
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return;
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this->valid = true;
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}
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static void lgVideoTick(void * data, float seconds)
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{
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LGPlugin * this = (LGPlugin *)data;
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if (!this->valid)
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return;
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LGMP_STATUS status;
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LGMPMessage msg;
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if ((status = lgmpClientAdvanceToLast(this->frameQueue)) != LGMP_OK)
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{
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if (status == LGMP_ERR_QUEUE_EMPTY)
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return;
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printf("lgmpClientAdvanceToLast: %s\n", lgmpStatusString(status));
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this->valid = false;
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return;
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}
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if ((status = lgmpClientProcess(this->frameQueue, &msg)) != LGMP_OK)
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{
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if (status == LGMP_ERR_QUEUE_EMPTY)
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return;
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printf("lgmpClientProcess: %s\n", lgmpStatusString(status));
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this->valid = false;
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return;
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}
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obs_enter_graphics();
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KVMFRFrame * frame = (KVMFRFrame *)msg.mem;
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if (this->width != frame->width ||
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this->height != frame->height ||
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this->type != frame->type)
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{
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if (this->texture)
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gs_texture_destroy(this->texture);
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this->texture = NULL;
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this->width = frame->width;
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this->height = frame->height;
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this->type = frame->type;
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}
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if (!this->texture)
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{
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enum gs_color_format format;
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switch(this->type)
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{
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case FRAME_TYPE_BGRA : format = GS_BGRA ; break;
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case FRAME_TYPE_RGBA : format = GS_RGBA ; break;
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case FRAME_TYPE_RGBA10: format = GS_R10G10B10A2; break;
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default:
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printf("invalid type %d\n", this->type);
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this->valid = false;
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obs_leave_graphics();
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return;
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}
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this->texture = gs_texture_create(
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this->width, this->height, format, 1, NULL, GS_DYNAMIC);
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if (!this->texture)
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{
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printf("create texture failed\n");
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this->valid = false;
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obs_leave_graphics();
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return;
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}
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}
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FrameBuffer fb = (FrameBuffer)(frame + 1);
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uint8_t *texData;
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uint32_t linesize;
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gs_texture_map(this->texture, &texData, &linesize);
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if (linesize == frame->pitch)
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framebuffer_read(fb, texData, frame->height * frame->pitch);
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gs_texture_unmap(this->texture);
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// gs_texture_set_image(this->texture, frameData, frame->pitch, false);
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lgmpClientMessageDone(this->frameQueue);
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obs_leave_graphics();
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}
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static void lgVideoRender(void * data, gs_effect_t * effect)
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{
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LGPlugin * this = (LGPlugin *)data;
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if (!this->texture)
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return;
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effect = obs_get_base_effect(OBS_EFFECT_OPAQUE);
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gs_eparam_t *image = gs_effect_get_param_by_name(effect, "image");
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gs_effect_set_texture(image, this->texture);
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while (gs_effect_loop(effect, "Draw")) {
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gs_draw_sprite(this->texture, 0, 0, 0);
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}
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}
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static uint32_t lgGetWidth(void * data)
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{
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LGPlugin * this = (LGPlugin *)data;
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if (!this->valid)
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return 0;
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return this->width;
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}
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static uint32_t lgGetHeight(void * data)
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{
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LGPlugin * this = (LGPlugin *)data;
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if (!this->valid)
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return 0;
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return this->height;
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}
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struct obs_source_info lg_source =
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{
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.id = "looking-glass-obs",
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.type = OBS_SOURCE_TYPE_INPUT,
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.output_flags = OBS_SOURCE_VIDEO | OBS_SOURCE_CUSTOM_DRAW |
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OBS_SOURCE_DO_NOT_DUPLICATE,
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.get_name = lgGetName,
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.create = lgCreate,
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.destroy = lgDestroy,
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.update = lgUpdate,
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.get_defaults = lgGetDefaults,
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.get_properties = lgGetProperties,
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.video_tick = lgVideoTick,
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.video_render = lgVideoRender,
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.get_width = lgGetWidth,
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.get_height = lgGetHeight,
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// .icon_type = OBS_ICON_TYPE_DESKTOP_CAPTURE
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};
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34
obs/main.c
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34
obs/main.c
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#include <obs/obs-module.h>
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#include <stdio.h>
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#ifdef _WIN32
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#undef EXPORT
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#define EXPORT __declspec(dllexport)
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#endif
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OBS_DECLARE_MODULE()
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OBS_MODULE_USE_DEFAULT_LOCALE("looking-glass-obs", "en-US")
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MODULE_EXPORT const char *obs_module_description(void)
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{
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return "Looking Glass Client";
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}
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extern struct obs_source_info lg_source;
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MODULE_EXPORT bool obs_module_load(void)
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{
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obs_register_source(&lg_source);
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return true;
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}
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#if defined(_WIN32) && defined(__GNUC__)
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/* GCC requires a DLL entry point even without any standard library included. */
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/* Types extracted from windows.h to avoid polluting the rest of the file. */
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int __stdcall DallMainCRTStartup(void* instance, unsigned reason, void* reserved)
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{
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(void) instance;
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(void) reason;
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(void) reserved;
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return 1;
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}
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#endif
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