mikael-lovqvists-claude-agent
a1b52145d0
Feature flags (FEATURES= make variable):
glfw — GLFW + OpenGL viewer (libglfw3, libglew)
vulkan — future Vulkan renderer
turbojpeg — MJPEG decode/encode (libturbojpeg)
xorg — XRandR geometry + screen grab (libx11, libxrandr)
vaapi — VA-API hardware codec (libva)
Each flag injects -DHAVE_<FEATURE> and the relevant pkg-config flags.
Headless build: make (no FEATURES set).
test_image module (src/modules/test_image/):
Generates test frames in YUV420, YUV422, and BGRA.
Patterns: SMPTE 75% colour bars, greyscale ramp, white/black grid.
BT.601 limited-range RGB→YCbCr in write_pixel().
test_image_cli (dev/cli/):
Generates a frame and writes it as a PPM file for visual verification.
Usage: test_image_cli [--pattern bars|ramp|grid]
[--width N] [--height N]
[--format yuv420|yuv422|bgra]
--out FILE.ppm
xorg module (src/modules/xorg/):
xorg.c — full GLFW+OpenGL implementation (compiled with FEATURES=glfw)
xorg_stub.c — no-op stub (compiled otherwise; xorg_available() returns false)
Renderer: full-screen quad via gl_VertexID, three GL_R8 textures for YUV,
BT.601 matrix in fragment shader, GL_BGRA texture for packed frames.
MJPEG path: tjDecompressToYUVPlanes → planar YUV → upload (requires turbojpeg).
push_yuv420/push_bgra/push_mjpeg all usable independently.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
61 lines
2.5 KiB
Makefile
61 lines
2.5 KiB
Makefile
# Included by all module and cli Makefiles.
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# Each including Makefile must set ROOT before including this file:
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# ROOT := $(abspath <relative path to repo root>)
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CC = gcc
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CFLAGS = -std=c11 -Wall -Wextra -D_GNU_SOURCE -flto -I$(ROOT)/include
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BUILD = $(ROOT)/build
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# Automatic dependency generation.
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# -MMD emit a .d file listing header prerequisites alongside each .o
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# -MP add phony targets for headers so removed headers don't break make
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DEPFLAGS = -MMD -MP
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# -----------------------------------------------------------------------
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# Feature flags
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# Set FEATURES to a space-separated list of optional deps to enable.
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# Example: make FEATURES="glfw turbojpeg"
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# Headless (no optional deps): make FEATURES=
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#
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# Available features:
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# glfw — GLFW window management + OpenGL renderer (libglfw3, libglew)
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# vulkan — GLFW window management + Vulkan renderer (vulkan-loader, libglfw3)
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# turbojpeg — MJPEG encode/decode (libturbojpeg)
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# xorg — XRandR geometry queries + XShmGetImage screen grab (libx11, libxrandr)
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# vaapi — VA-API hardware encode/decode (libva)
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# -----------------------------------------------------------------------
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FEATURES ?=
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export FEATURES
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# Inject HAVE_ defines into CFLAGS
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CFLAGS += $(if $(filter glfw, $(FEATURES)),-DHAVE_GLFW)
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CFLAGS += $(if $(filter vulkan, $(FEATURES)),-DHAVE_VULKAN)
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CFLAGS += $(if $(filter turbojpeg, $(FEATURES)),-DHAVE_TURBOJPEG)
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CFLAGS += $(if $(filter xorg, $(FEATURES)),-DHAVE_XORG)
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CFLAGS += $(if $(filter vaapi, $(FEATURES)),-DHAVE_VAAPI)
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# Per-feature pkg-config flags — accumulated into PKG_CFLAGS / PKG_LDFLAGS.
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# Modules that need them add $(PKG_CFLAGS) to their compile rules.
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# The node and cli link rules append $(PKG_LDFLAGS).
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PKG_CFLAGS :=
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PKG_LDFLAGS :=
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ifneq (,$(filter glfw,$(FEATURES)))
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PKG_CFLAGS += $(shell pkg-config --cflags glfw3 glew 2>/dev/null)
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PKG_LDFLAGS += $(shell pkg-config --libs glfw3 glew 2>/dev/null) -lGL
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endif
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ifneq (,$(filter turbojpeg,$(FEATURES)))
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PKG_CFLAGS += $(shell pkg-config --cflags libturbojpeg 2>/dev/null)
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PKG_LDFLAGS += $(shell pkg-config --libs libturbojpeg 2>/dev/null)
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endif
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ifneq (,$(filter xorg,$(FEATURES)))
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PKG_CFLAGS += $(shell pkg-config --cflags x11 xrandr 2>/dev/null)
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PKG_LDFLAGS += $(shell pkg-config --libs x11 xrandr 2>/dev/null)
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endif
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ifneq (,$(filter vaapi,$(FEATURES)))
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PKG_CFLAGS += $(shell pkg-config --cflags libva 2>/dev/null)
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PKG_LDFLAGS += $(shell pkg-config --libs libva 2>/dev/null)
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endif
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CFLAGS += $(PKG_CFLAGS)
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