mikael-lovqvists-claude-agent/video-setup
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feat: add test_image module, xorg viewer sink, and feature flag build system

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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>
This commit is contained in:
mikael-lovqvists-claude-agent
2026-03-28 20:54:07 +00:00
parent 98c700390d
commit a1b52145d0
12 changed files with 946 additions and 22 deletions
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48
dev/cli/Makefile
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@@ -1,15 +1,16 @@
ROOT := $(abspath ../..)
include $(ROOT)/common.mk
CLI_BUILD = $(BUILD)/cli
COMMON_OBJ = $(BUILD)/common/error.o
MEDIA_CTRL_OBJ = $(BUILD)/media_ctrl/media_ctrl.o
V4L2_CTRL_OBJ = $(BUILD)/v4l2_ctrl/v4l2_ctrl.o
SERIAL_OBJ = $(BUILD)/serial/serial.o
TRANSPORT_OBJ = $(BUILD)/transport/transport.o
DISCOVERY_OBJ = $(BUILD)/discovery/discovery.o
CONFIG_OBJ = $(BUILD)/config/config.o
PROTOCOL_OBJ = $(BUILD)/protocol/protocol.o
CLI_BUILD = $(BUILD)/cli
COMMON_OBJ = $(BUILD)/common/error.o
MEDIA_CTRL_OBJ = $(BUILD)/media_ctrl/media_ctrl.o
V4L2_CTRL_OBJ = $(BUILD)/v4l2_ctrl/v4l2_ctrl.o
SERIAL_OBJ = $(BUILD)/serial/serial.o
TRANSPORT_OBJ = $(BUILD)/transport/transport.o
DISCOVERY_OBJ = $(BUILD)/discovery/discovery.o
CONFIG_OBJ = $(BUILD)/config/config.o
PROTOCOL_OBJ = $(BUILD)/protocol/protocol.o
TEST_IMAGE_OBJ = $(BUILD)/test_image/test_image.o
CLI_SRCS = \
media_ctrl_cli.c \
@@ -18,7 +19,8 @@ CLI_SRCS = \
discovery_cli.c \
config_cli.c \
protocol_cli.c \
query_cli.c
query_cli.c \
test_image_cli.c
CLI_OBJS = $(CLI_SRCS:%.c=$(CLI_BUILD)/%.o)
@@ -31,17 +33,19 @@ all: \
$(CLI_BUILD)/discovery_cli \
$(CLI_BUILD)/config_cli \
$(CLI_BUILD)/protocol_cli \
$(CLI_BUILD)/query_cli
$(CLI_BUILD)/query_cli \
$(CLI_BUILD)/test_image_cli
# Module objects delegate to their sub-makes.
$(COMMON_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/common
$(MEDIA_CTRL_OBJ):; $(MAKE) -C $(ROOT)/src/modules/media_ctrl
$(V4L2_CTRL_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/v4l2_ctrl
$(SERIAL_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/serial
$(TRANSPORT_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/transport
$(DISCOVERY_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/discovery
$(CONFIG_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/config
$(PROTOCOL_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/protocol
$(COMMON_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/common
$(MEDIA_CTRL_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/media_ctrl
$(V4L2_CTRL_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/v4l2_ctrl
$(SERIAL_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/serial
$(TRANSPORT_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/transport
$(DISCOVERY_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/discovery
$(CONFIG_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/config
$(PROTOCOL_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/protocol
$(TEST_IMAGE_OBJ): ; $(MAKE) -C $(ROOT)/src/modules/test_image
# Compile each CLI source to its own .o (generates .d alongside).
$(CLI_BUILD)/%.o: %.c | $(CLI_BUILD)
@@ -69,6 +73,9 @@ $(CLI_BUILD)/protocol_cli: $(CLI_BUILD)/protocol_cli.o $(COMMON_OBJ) $(SERIAL_OB
$(CLI_BUILD)/query_cli: $(CLI_BUILD)/query_cli.o $(COMMON_OBJ) $(SERIAL_OBJ) $(TRANSPORT_OBJ) $(DISCOVERY_OBJ) $(PROTOCOL_OBJ)
$(CC) $(CFLAGS) -o $@ $^ -lpthread
$(CLI_BUILD)/test_image_cli: $(CLI_BUILD)/test_image_cli.o $(TEST_IMAGE_OBJ)
$(CC) $(CFLAGS) -o $@ $^
$(CLI_BUILD):
mkdir -p $@
@@ -82,6 +89,7 @@ clean:
$(CLI_BUILD)/discovery_cli \
$(CLI_BUILD)/config_cli \
$(CLI_BUILD)/protocol_cli \
$(CLI_BUILD)/query_cli
$(CLI_BUILD)/query_cli \
$(CLI_BUILD)/test_image_cli
-include $(CLI_OBJS:%.o=%.d)