code cleanup, remove broken usb identification

1 files changed, 121 insertions, 0 deletions

diff --git a/camera.h b/camera.h
new file mode 100644
index 0000000..e299852
--- /dev/null
+++ b/camera.h
@@ -0,0 +1,121 @@
+#ifndef CAMERA_H_
+#define CAMERA_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <GL/glcorearb.h>
+
+typedef uint32_t PixelFormat;
+typedef struct Camera Camera;
+#define HASH_SIZE 16
+typedef struct {
+	uint8_t hash[HASH_SIZE];
+} Hash;
+
+typedef struct {
+	int32_t width;
+	int32_t height;
+	PixelFormat pixfmt;
+} PictureFormat;
+
+typedef enum {
+	// (default value)
+	CAMERA_ACCESS_NOT_SETUP,
+	// access camera via mmap streaming
+	CAMERA_ACCESS_MMAP,
+	// access camera via read calls
+	CAMERA_ACCESS_READ,
+	// access camera via user-pointer streaming
+	CAMERA_ACCESS_USERP,
+} CameraAccessMethod;
+
+/// macro trickery to avoid having to write every GL function multiple times
+#define gl_for_each_proc(do)\
+	do(DRAWARRAYS, DrawArrays)\
+	do(GENTEXTURES, GenTextures)\
+	do(DELETETEXTURES, DeleteTextures)\
+	do(GENERATEMIPMAP, GenerateMipmap)\
+	do(TEXIMAGE2D, TexImage2D)\
+	do(BINDTEXTURE, BindTexture)\
+	do(TEXPARAMETERI, TexParameteri)\
+	do(GETERROR, GetError)\
+	do(GETINTEGERV, GetIntegerv)\
+	do(ENABLE, Enable)\
+	do(DISABLE, Disable)\
+	do(BLENDFUNC, BlendFunc)\
+	do(VIEWPORT, Viewport)\
+	do(CLEARCOLOR, ClearColor)\
+	do(CLEAR, Clear)\
+	do(FINISH, Finish)\
+	do(CREATESHADER, CreateShader)\
+	do(DELETESHADER, DeleteShader)\
+	do(SHADERSOURCE, ShaderSource)\
+	do(GETSHADERIV, GetShaderiv)\
+	do(GETSHADERINFOLOG, GetShaderInfoLog)\
+	do(COMPILESHADER, CompileShader)\
+	do(CREATEPROGRAM, CreateProgram)\
+	do(DELETEPROGRAM, DeleteProgram)\
+	do(ATTACHSHADER, AttachShader)\
+	do(LINKPROGRAM, LinkProgram)\
+	do(GETPROGRAMIV, GetProgramiv)\
+	do(GETPROGRAMINFOLOG, GetProgramInfoLog)\
+	do(USEPROGRAM, UseProgram)\
+	do(GETATTRIBLOCATION, GetAttribLocation)\
+	do(GETUNIFORMLOCATION, GetUniformLocation)\
+	do(GENBUFFERS, GenBuffers)\
+	do(DELETEBUFFERS, DeleteBuffers)\
+	do(BINDBUFFER, BindBuffer)\
+	do(BUFFERDATA, BufferData)\
+	do(VERTEXATTRIBPOINTER, VertexAttribPointer)\
+	do(ENABLEVERTEXATTRIBARRAY, EnableVertexAttribArray)\
+	do(DISABLEVERTEXATTRIBARRAY, DisableVertexAttribArray)\
+	do(GENVERTEXARRAYS, GenVertexArrays)\
+	do(DELETEVERTEXARRAYS, DeleteVertexArrays)\
+	do(BINDVERTEXARRAY, BindVertexArray)\
+	do(ACTIVETEXTURE, ActiveTexture)\
+	do(UNIFORM1F, Uniform1f)\
+	do(UNIFORM2F, Uniform2f)\
+	do(UNIFORM3F, Uniform3f)\
+	do(UNIFORM4F, Uniform4f)\
+	do(UNIFORM1I, Uniform1i)\
+	do(UNIFORM2I, Uniform2i)\
+	do(UNIFORM3I, Uniform3i)\
+	do(UNIFORM4I, Uniform4i)\
+	do(UNIFORMMATRIX4FV, UniformMatrix4fv)\
+	do(DEBUGMESSAGECALLBACK, DebugMessageCallback)\
+	do(DEBUGMESSAGECONTROL, DebugMessageControl)\
+	do(PIXELSTOREI, PixelStorei)
+typedef struct {
+#define declare_proc(upper, lower) PFNGL##upper##PROC lower;
+	gl_for_each_proc(declare_proc)
+#undef declare_proc
+} GlProcs;
+
+void camera_init(const GlProcs *procs);
+bool pix_fmt_supported(uint32_t pixfmt);
+int picture_format_cmp_resolution(const PictureFormat *a, const PictureFormat *b);
+int picture_format_cmp_qsort(const void *av, const void *bv);
+const char *pixfmt_to_string(uint32_t pixfmt);
+PictureFormat *camera_get_resolutions_with_pixfmt(Camera *camera, uint32_t pixfmt);
+uint32_t *camera_get_pixfmts(Camera *camera);
+PictureFormat camera_closest_resolution(Camera *camera, uint32_t pixfmt, int32_t desired_width, int32_t desired_height);
+int32_t camera_frame_width(Camera *camera);
+int32_t camera_frame_height(Camera *camera);
+PictureFormat camera_picture_format(Camera *camera);
+void camera_write_jpg(Camera *camera, const char *name, int quality);
+bool camera_next_frame(Camera *camera);
+void camera_update_gl_texture_2d(Camera *camera);
+const char *camera_name(Camera *camera);
+uint32_t camera_pixel_format(Camera *camera);
+CameraAccessMethod camera_access_method(Camera *camera);
+void camera_close(Camera *camera);
+void cameras_from_device(const char *dev_path, const char *serial, Camera ***cameras);
+void camera_update_hash(Camera *camera, const void *data, size_t len);
+bool camera_open(Camera *camera);
+Hash camera_hash(Camera *camera);
+void camera_hash_str(Camera *camera, char str[HASH_SIZE * 2 + 1]);
+bool camera_set_format(Camera *camera, PictureFormat picfmt, CameraAccessMethod access, bool force);
+void camera_free(Camera *camera);
+
+#endif