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>
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
#pragma once
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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typedef struct Xorg_Viewer Xorg_Viewer;
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/* Returns false when compiled without HAVE_GLFW. */
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bool xorg_available(void);
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/*
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* Open a viewer window at screen position (x, y) with the given size.
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* Returns NULL if xorg is unavailable or if window/context creation fails.
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*/
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Xorg_Viewer *xorg_viewer_open(int x, int y, int width, int height,
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const char *title);
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/* Push a YUV 4:2:0 planar frame for immediate display. */
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bool xorg_viewer_push_yuv420(Xorg_Viewer *v,
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const uint8_t *y, const uint8_t *cb, const uint8_t *cr,
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int width, int height);
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/* Push a packed BGRA frame for immediate display. */
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bool xorg_viewer_push_bgra(Xorg_Viewer *v,
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const uint8_t *data, int width, int height);
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/*
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* Push a MJPEG frame. Decoded via libjpeg-turbo to planar YUV before upload.
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* Returns false if compiled without HAVE_TURBOJPEG.
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*/
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bool xorg_viewer_push_mjpeg(Xorg_Viewer *v,
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const uint8_t *data, size_t size);
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/*
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* Process pending window events.
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* Returns false when the user has closed the window.
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* Must be called from the thread that created the viewer.
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*/
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bool xorg_viewer_poll(Xorg_Viewer *v);
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void xorg_viewer_close(Xorg_Viewer *v);
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