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obs-studio/libobs/CMakeLists.txt
jp9000 6839ff7686 libobs: Implement transition sources 
Transition sources are implemented by registering a source type as
OBS_SOURCE_TYPE_TRANSITION.  They're automatically marked as video
composite sources, and video_render/audio_render callbacks must be set
when registering the source.  get_width and get_height callbacks are
unused for these types of sources, as transitions automatically handle
width/height behind the scenes with the transition settings.

In the video_render callback, the helper function
obs_transition_video_render is used to assist in automatically
processing and rendering the audio.  A render callback is passed to the
function, which in turn passes to/from textures that are automatically
rendered in the back-end.

Similarly, in the audio_render callback, the helper function
obs_transition_audio_render is used to assist in automatically
processing and rendering the audio.  Two mix callbacks are used to
handle how the source/destination sources are mixed together.  To ensure
the best possible quality, audio processing is per-sample.

Transitions can be set to automatically resize, or they can be set to
have a fixed size.  Sources within transitions can be made to scale to
the transition size (with or without aspect ratio), or to not scale
unless they're bigger than the transition.  They can have a specific
alignment within the transition, or they just default to top-left.
These features are implemented for the purpose of extending transitions
to also act as "switch" sources later, where you can switch to/from two
different sources using the transition animation.

Planned (but not yet implemented and lower priority) features:

- "Switch" transitions which allow the ability to switch back and forth
  between two sources with a transitioning animation without discarding
  the references

- Easing options to allow the option to transition with a bezier or
  custom curve

- Manual transitioning to allow the front-end/user to manually control
  the transition offset
2016-01-26 11:49:45 -08:00

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project(libobs)
find_package(Threads REQUIRED)
find_package(FFmpeg REQUIRED
COMPONENTS avformat avutil swscale swresample
OPTIONAL_COMPONENTS avcodec)
include_directories(${FFMPEG_INCLUDE_DIRS})
if (NOT "${FFMPEG_AVCODEC_LIBRARIES}" STREQUAL "")
list(REMOVE_ITEM FFMPEG_LIBRARIES ${FFMPEG_AVCODEC_LIBRARIES})
endif()
if(UNIX)
find_package(DBus QUIET)
else()
set(HAVE_DBUS "0")
endif()
find_package(ImageMagick QUIET COMPONENTS MagickCore)
if(NOT ImageMagick_MagickCore_FOUND AND NOT FFMPEG_AVCODEC_FOUND)
message(FATAL_ERROR "Either MagickCore or Libavcodec is required, but both were not found")
endif()
option(LIBOBS_PREFER_IMAGEMAGICK "Prefer ImageMagick over ffmpeg for image loading" OFF)
if(NOT FFMPEG_AVCODEC_FOUND OR (ImageMagick_MagickCore_FOUND AND LIBOBS_PREFER_IMAGEMAGICK))
message(STATUS "Using ImageMagick for image loading in libobs")
set(libobs_image_loading_SOURCES
graphics/graphics-magick.c)
set(libobs_image_loading_LIBRARIES
${ImageMagick_LIBRARIES})
include_directories(${ImageMagick_INCLUDE_DIRS})
else()
message(STATUS "Using libavcodec for image loading in libobs")
set(libobs_image_loading_SOURCES
graphics/graphics-ffmpeg.c)
set(libobs_image_loading_LIBRARIES
${FFMPEG_AVCODEC_LIBRARIES})
endif()
find_package(ZLIB REQUIRED)
include_directories(SYSTEM ${ZLIB_INCLUDE_DIR})
add_definitions(-DLIBOBS_EXPORTS)
include_directories(${OBS_JANSSON_INCLUDE_DIRS})
if(WIN32)
set(libobs_PLATFORM_SOURCES
obs-win-crash-handler.c
obs-windows.c
util/threading-windows.c
util/pipe-windows.c
util/platform-windows.c)
set(libobs_PLATFORM_HEADERS
util/threading-windows.h
util/windows/win-version.h
util/windows/ComPtr.hpp
util/windows/CoTaskMemPtr.hpp
util/windows/HRError.hpp
util/windows/WinHandle.hpp)
set(libobs_PLATFORM_DEPS winmm)
if(MSVC)
set(libobs_PLATFORM_DEPS
${libobs_PLATFORM_DEPS}
w32-pthreads)
endif()
elseif(APPLE)
set(libobs_PLATFORM_SOURCES
obs-cocoa.c
util/threading-posix.c
util/pipe-posix.c
util/platform-nix.c
util/platform-cocoa.m)
set(libobs_PLATFORM_HEADERS
util/threading-posix.h)
set_source_files_properties(${libobs_PLATFORM_SOURCES}
PROPERTIES
LANGUAGE C
COMPILE_FLAGS "-fobjc-arc")
find_library(COCOA Cocoa)
mark_as_advanced(COCOA)
include_directories(${COCOA})
find_library(APPKIT AppKit)
mark_as_advanced(APPKIT)
include_directories(${APPKIT})
find_library(IOKIT IOKit)
mark_as_advanced(IOKIT)
include_directories(${IOKIT})
find_library(CARBON Carbon)
mark_as_advanced(CARBON)
include_directories(${CARBON})
set(libobs_PLATFORM_DEPS
${COCOA}
${APPKIT}
${IOKIT}
${CARBON})
elseif(UNIX)
set(libobs_PLATFORM_SOURCES
obs-nix.c
util/threading-posix.c
util/pipe-posix.c
util/platform-nix.c)
set(libobs_PLATFORM_HEADERS
util/threading-posix.h)
if(DBUS_FOUND)
set(libobs_PLATFORM_SOURCES ${libobs_PLATFORM_SOURCES}
util/platform-nix-dbus.c)
include_directories(${DBUS_INCLUDE_DIRS})
set(libobs_PLATFORM_DEPS
${libobs_PLATFORM_DEPS}
${DBUS_LIBRARIES})
endif()
if(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
# use the sysinfo compatibility library on bsd
find_package(Libsysinfo REQUIRED)
include_directories(${SYSINFO_INCLUDE_DIRS})
set(libobs_PLATFORM_DEPS
${libobs_PLATFORM_DEPS}
${SYSINFO_LIBRARIES})
endif()
endif()
if(MSVC)
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} /SAFESEH:NO")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /EHc-")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHc-")
endif()
configure_file(
"${CMAKE_CURRENT_SOURCE_DIR}/obsconfig.h.in"
"${CMAKE_BINARY_DIR}/config/obsconfig.h")
set(libobs_config_HEADERS
"${CMAKE_BINARY_DIR}/config/obsconfig.h"
obs-config.h)
set(libobs_callback_SOURCES
callback/calldata.c
callback/decl.c
callback/signal.c
callback/proc.c)
set(libobs_callback_HEADERS
callback/calldata.h
callback/decl.h
callback/proc.h
callback/signal.h)
set(libobs_graphics_SOURCES
${libobs_image_loading_SOURCES}
graphics/quat.c
graphics/effect-parser.c
graphics/axisang.c
graphics/vec4.c
graphics/vec2.c
graphics/libnsgif/libnsgif.c
graphics/texture-render.c
graphics/image-file.c
graphics/bounds.c
graphics/matrix3.c
graphics/matrix4.c
graphics/vec3.c
graphics/graphics.c
graphics/shader-parser.c
graphics/plane.c
graphics/effect.c
graphics/math-extra.c
graphics/graphics-imports.c)
set(libobs_graphics_HEADERS
graphics/plane.h
graphics/quat.h
graphics/input.h
graphics/axisang.h
graphics/shader-parser.h
graphics/effect.h
graphics/math-defs.h
graphics/matrix4.h
graphics/graphics.h
graphics/graphics-internal.h
graphics/libnsgif/libnsgif.h
graphics/device-exports.h
graphics/image-file.h
graphics/vec2.h
graphics/vec4.h
graphics/matrix3.h
graphics/vec3.h
graphics/math-extra.h
graphics/bounds.h
graphics/effect-parser.h)
set(libobs_mediaio_SOURCES
media-io/video-io.c
media-io/video-fourcc.c
media-io/video-matrices.c
media-io/audio-io.c
media-io/video-frame.c
media-io/format-conversion.c
media-io/audio-resampler-ffmpeg.c
media-io/video-scaler-ffmpeg.c
media-io/media-remux.c)
set(libobs_mediaio_HEADERS
media-io/media-io-defs.h
media-io/video-io.h
media-io/audio-io.h
media-io/audio-math.h
media-io/video-frame.h
media-io/format-conversion.h
media-io/audio-resampler.h
media-io/video-scaler.h
media-io/media-remux.h
media-io/frame-rate.h)
set(libobs_util_SOURCES
util/array-serializer.c
util/file-serializer.c
util/base.c
util/platform.c
util/cf-lexer.c
util/bmem.c
util/config-file.c
util/lexer.c
util/dstr.c
util/utf8.c
util/crc32.c
util/text-lookup.c
util/cf-parser.c
util/profiler.c)
set(libobs_util_HEADERS
util/array-serializer.h
util/file-serializer.h
util/utf8.h
util/crc32.h
util/base.h
util/text-lookup.h
util/vc/vc_inttypes.h
util/vc/vc_stdbool.h
util/vc/vc_stdint.h
util/bmem.h
util/c99defs.h
util/util_uint128.h
util/cf-parser.h
util/threading.h
util/pipe.h
util/cf-lexer.h
util/darray.h
util/circlebuf.h
util/dstr.h
util/serializer.h
util/config-file.h
util/lexer.h
util/platform.h
util/profiler.h
util/profiler.hpp)
set(libobs_libobs_SOURCES
${libobs_PLATFORM_SOURCES}
obs-audio-controls.c
obs-avc.c
obs-encoder.c
obs-service.c
obs-source.c
obs-source-transition.c
obs-output.c
obs-output-delay.c
obs.c
obs-properties.c
obs-data.c
obs-hotkey.c
obs-hotkey-name-map.c
obs-module.c
obs-display.c
obs-view.c
obs-scene.c
obs-audio.c
obs-video.c)
set(libobs_libobs_HEADERS
${libobs_PLATFORM_HEADERS}
obs-audio-controls.h
obs-defs.h
obs-avc.h
obs-encoder.h
obs-service.h
obs-internal.h
obs.h
obs-ui.h
obs-properties.h
obs-data.h
obs-interaction.h
obs-hotkey.h
obs-hotkeys.h
obs-module.h
obs-scene.h
obs-source.h
obs-output.h
obs-ffmpeg-compat.h
obs.hpp)
set(libobs_SOURCES
${libobs_callback_SOURCES}
${libobs_graphics_SOURCES}
${libobs_mediaio_SOURCES}
${libobs_util_SOURCES}
${libobs_libobs_SOURCES})
set(libobs_HEADERS
${libobs_config_HEADERS}
${libobs_callback_HEADERS}
${libobs_graphics_HEADERS}
${libobs_mediaio_HEADERS}
${libobs_util_HEADERS}
${libobs_libobs_HEADERS})
source_group("callback\\Source Files" FILES ${libobs_callback_SOURCES})
source_group("callback\\Header Files" FILES ${libobs_callback_HEADERS})
source_group("graphics\\Source Files" FILES ${libobs_graphics_SOURCES})
source_group("graphics\\Header Files" FILES ${libobs_graphics_HEADERS})
source_group("libobs\\Source Files" FILES ${libobs_libobs_SOURCES})
source_group("libobs\\Header Files" FILES ${libobs_libobs_HEADERS})
source_group("media-io\\Source Files" FILES ${libobs_mediaio_SOURCES})
source_group("media-io\\Header Files" FILES ${libobs_mediaio_HEADERS})
source_group("util\\Source Files" FILES ${libobs_util_SOURCES})
source_group("util\\Header Files" FILES ${libobs_util_HEADERS})
add_library(libobs SHARED ${libobs_SOURCES} ${libobs_HEADERS})
set_target_properties(libobs PROPERTIES
OUTPUT_NAME obs
VERSION "0"
SOVERSION "0")
target_compile_definitions(libobs
PUBLIC
HAVE_OBSCONFIG_H)
if(NOT MSVC)
target_compile_options(libobs
PUBLIC
-mmmx
-msse
-msse2)
endif()
target_compile_options(libobs
PUBLIC
"${THREADS_DEFINITIONS}")
target_include_directories(libobs
PUBLIC
"$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>"
"$<BUILD_INTERFACE:${CMAKE_BINARY_DIR}/config>"
"$<INSTALL_INTERFACE:${OBS_INCLUDE_DESTINATION}>")
target_link_libraries(libobs
PRIVATE
${libobs_PLATFORM_DEPS}
${libobs_image_loading_LIBRARIES}
${OBS_JANSSON_IMPORT}
${FFMPEG_LIBRARIES}
${ZLIB_LIBRARIES}
PUBLIC
${THREADS_LIBRARIES})
install_obs_core(libobs EXPORT LibObs)
install_obs_data(libobs data libobs)
install_obs_headers(${libobs_HEADERS})
obs_install_additional(libobs)
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