155 lines
3.9 KiB
C
155 lines
3.9 KiB
C
/**
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* @file rem_vid.h Basic video types
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*
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* Copyright (C) 2010 Creytiv.com
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*/
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/** Pixel format */
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enum vidfmt {
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VID_FMT_YUV420P = 0, /* planar YUV 4:2:0 12bpp */
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VID_FMT_YUYV422, /* packed YUV 4:2:2 16bpp */
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VID_FMT_UYVY422, /* packed YUV 4:2:2 16bpp */
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VID_FMT_RGB32, /* packed RGBA 8:8:8:8 32bpp (native endian) */
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VID_FMT_ARGB, /* packed RGBA 8:8:8:8 32bpp (big endian) */
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VID_FMT_RGB565, /* packed RGB 5:6:5 16bpp (native endian) */
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VID_FMT_NV12, /* planar YUV 4:2:0 12bpp UV interleaved */
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VID_FMT_NV21, /* planar YUV 4:2:0 12bpp VU interleaved */
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VID_FMT_YUV444P, /* planar YUV 4:4:4 24bpp */
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VID_FMT_YUV422P, /* planar YUV 4:2:2 16bpp */
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/* marker */
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VID_FMT_N
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};
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/** Video pixel format component description */
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struct vidfmt_compdesc {
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unsigned plane_index:2;
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unsigned step:3;
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};
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/** Video pixel format description */
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struct vidfmt_desc {
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const char *name;
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uint8_t planes;
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uint8_t compn;
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struct vidfmt_compdesc compv[4];
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};
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/** Video orientation */
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enum vidorient {
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VIDORIENT_PORTRAIT,
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VIDORIENT_PORTRAIT_UPSIDEDOWN,
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VIDORIENT_LANDSCAPE_LEFT,
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VIDORIENT_LANDSCAPE_RIGHT,
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};
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/** Video size */
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struct vidsz {
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unsigned w; /**< Width */
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unsigned h; /**< Height */
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};
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/** Video frame */
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struct vidframe {
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uint8_t *data[4]; /**< Video planes */
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uint16_t linesize[4]; /**< Array of line-sizes */
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struct vidsz size; /**< Frame resolution */
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enum vidfmt fmt; /**< Video pixel format */
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unsigned xoffs; /**< x offset */
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unsigned yoffs; /**< y offset */
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};
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/** Video point */
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struct vidpt {
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unsigned x; /**< X position */
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unsigned y; /**< Y position */
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};
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/** Video rectangle */
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struct vidrect {
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unsigned x; /**< X position */
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unsigned y; /**< Y position */
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unsigned w; /**< Width */
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unsigned h; /**< Height */
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};
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static inline bool vidsz_cmp(const struct vidsz *a, const struct vidsz *b)
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{
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if (!a || !b)
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return false;
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if (a == b)
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return true;
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return a->w == b->w && a->h == b->h;
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}
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static inline bool vidrect_cmp(const struct vidrect *a,
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const struct vidrect *b)
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{
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if (!a || !b)
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return false;
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if (a == b)
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return true;
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return a->x == b->x && a->y == b->y && a->w == b->w && a->h == b->h;
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}
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static inline int rgb2y(uint8_t r, uint8_t g, uint8_t b)
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{
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return ((66 * r + 129 * g + 25 * b + 128) >> 8) + 16;
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}
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static inline int rgb2u(uint8_t r, uint8_t g, uint8_t b)
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{
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return ((-38 * r - 74 * g + 112 * b + 128) >> 8) + 128;
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}
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static inline int rgb2v(uint8_t r, uint8_t g, uint8_t b)
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{
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return ((112 * r - 94 * g - 18 * b + 128) >> 8) + 128;
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}
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size_t vidframe_size(enum vidfmt fmt, const struct vidsz *sz);
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void vidframe_init(struct vidframe *vf, enum vidfmt fmt,
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const struct vidsz *sz, void *data[4],
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unsigned linesize[4]);
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void vidframe_init_buf(struct vidframe *vf, enum vidfmt fmt,
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const struct vidsz *sz, uint8_t *buf);
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int vidframe_alloc(struct vidframe **vfp, enum vidfmt fmt,
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const struct vidsz *sz);
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void vidframe_fill(struct vidframe *vf, uint32_t r, uint32_t g, uint32_t b);
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void vidframe_copy(struct vidframe *dst, const struct vidframe *src);
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const char *vidfmt_name(enum vidfmt fmt);
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static inline bool vidframe_isvalid(const struct vidframe *f)
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{
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return f ? f->data[0] != NULL : false;
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}
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extern const struct vidfmt_desc vidfmt_descv[VID_FMT_N];
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/* draw */
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void vidframe_draw_point(struct vidframe *f, unsigned x, unsigned y,
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uint8_t r, uint8_t g, uint8_t b);
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void vidframe_draw_hline(struct vidframe *f,
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unsigned x0, unsigned y0, unsigned w,
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uint8_t r, uint8_t g, uint8_t b);
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void vidframe_draw_vline(struct vidframe *f,
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unsigned x0, unsigned y0, unsigned h,
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uint8_t r, uint8_t g, uint8_t b);
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void vidframe_draw_rect(struct vidframe *f,
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unsigned x0, unsigned y0, unsigned w, unsigned h,
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uint8_t r, uint8_t g, uint8_t b);
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