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ugfx/include/gdisp/lld/gdisp_lld.h

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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/**
* @file include/gdisp/lld/gdisp_lld.h
* @brief GDISP Graphic Driver subsystem low level driver header.
*
* @addtogroup GDISP
* @{
*/
#ifndef _GDISP_LLD_H
#define _GDISP_LLD_H
#if GFX_USE_GDISP || defined(__DOXYGEN__)
/*===========================================================================*/
/* Error checks. */
/*===========================================================================*/
#if GDISP_TOTAL_CONTROLLERS > 1 && !defined(GDISP_DRIVER_VMT)
#define HARDWARE_AUTODETECT 2
#define HARDWARE_DEFAULT HARDWARE_AUTODETECT
#else
#define HARDWARE_AUTODETECT 2
#define HARDWARE_DEFAULT FALSE
#endif
/**
* @name GDISP hardware accelerated support
* @{
*/
/**
* @brief The display hardware can benefit from being flushed.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
* @note Some controllers ** require ** the application to flush
*/
#ifndef GDISP_HARDWARE_FLUSH
#define GDISP_HARDWARE_FLUSH HARDWARE_DEFAULT
#endif
/**
* @brief Hardware streaming writing is supported.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
* @note Either GDISP_HARDWARE_STREAM_WRITE or GDISP_HARDWARE_DRAWPIXEL must be provided by each driver
*/
#ifndef GDISP_HARDWARE_STREAM_WRITE
#define GDISP_HARDWARE_STREAM_WRITE HARDWARE_DEFAULT
#endif
/**
* @brief Hardware streaming reading of the display surface is supported.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
*
*/
#ifndef GDISP_HARDWARE_STREAM_READ
#define GDISP_HARDWARE_STREAM_READ HARDWARE_DEFAULT
#endif
/**
* @brief Hardware supports setting the cursor position within the stream window.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
* @note This is used to optimise setting of individual pixels within a stream window.
* It should therefore not be implemented unless it is cheaper than just setting
* a new window.
*/
#ifndef GDISP_HARDWARE_STREAM_POS
#define GDISP_HARDWARE_STREAM_POS HARDWARE_DEFAULT
#endif
/**
* @brief Hardware accelerated draw pixel.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
* @note Either GDISP_HARDWARE_STREAM_WRITE or GDISP_HARDWARE_DRAWPIXEL must be provided by the driver
*/
#ifndef GDISP_HARDWARE_DRAWPIXEL
#define GDISP_HARDWARE_DRAWPIXEL HARDWARE_DEFAULT
#endif
/**
* @brief Hardware accelerated screen clears.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
* @note This clears the entire display surface regardless of the clipping area currently set
*/
#ifndef GDISP_HARDWARE_CLEARS
#define GDISP_HARDWARE_CLEARS HARDWARE_DEFAULT
#endif
/**
* @brief Hardware accelerated rectangular fills.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
*/
#ifndef GDISP_HARDWARE_FILLS
#define GDISP_HARDWARE_FILLS HARDWARE_DEFAULT
#endif
/**
* @brief Hardware accelerated fills from an image.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
*/
#ifndef GDISP_HARDWARE_BITFILLS
#define GDISP_HARDWARE_BITFILLS HARDWARE_DEFAULT
#endif
/**
* @brief Hardware accelerated scrolling.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
*/
#ifndef GDISP_HARDWARE_SCROLL
#define GDISP_HARDWARE_SCROLL HARDWARE_DEFAULT
#endif
/**
* @brief Reading back of pixel values.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
*/
#ifndef GDISP_HARDWARE_PIXELREAD
#define GDISP_HARDWARE_PIXELREAD HARDWARE_DEFAULT
#endif
/**
* @brief The driver supports one or more control commands.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
*/
#ifndef GDISP_HARDWARE_CONTROL
#define GDISP_HARDWARE_CONTROL HARDWARE_DEFAULT
#endif
/**
* @brief The driver supports a non-standard query.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
*/
#ifndef GDISP_HARDWARE_QUERY
#define GDISP_HARDWARE_QUERY HARDWARE_DEFAULT
#endif
/**
* @brief The driver supports a clipping in hardware.
* @details Can be set to TRUE, FALSE or HARDWARE_AUTODETECT
*
* @note HARDWARE_AUTODETECT is only meaningful when GDISP_TOTAL_CONTROLLERS > 1
* @note If this is defined the driver must perform its own clipping on all calls to
* the driver and respond appropriately if a parameter is outside the display area.
* @note If this is not defined then the software ensures that all calls to the
* driver do not exceed the display area (provided GDISP_NEED_CLIP or GDISP_NEED_VALIDATION
* has been set).
*/
#ifndef GDISP_HARDWARE_CLIP
#define GDISP_HARDWARE_CLIP HARDWARE_DEFAULT
#endif
/** @} */
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
struct GDisplay {
// The public GDISP stuff - must be the first element
GDISPControl g;
#if GDISP_TOTAL_CONTROLLERS > 1
const struct GDISPVMT const * vmt; // The Virtual Method Table
#endif
void * priv; // A private area just for the drivers use.
void * board; // A private area just for the board interfaces use.
uint8_t systemdisplay;
uint8_t controllerdisplay;
uint16_t flags;
#define GDISP_FLG_INSTREAM 0x0001 // We are in a user based stream operation
#define GDISP_FLG_SCRSTREAM 0x0002 // The stream area currently covers the whole screen
#define GDISP_FLG_DRIVER 0x0004 // This flags and above are for use by the driver
// Multithread Mutex
#if GDISP_NEED_MULTITHREAD
gfxMutex mutex;
#endif
// Software clipping
#if GDISP_HARDWARE_CLIP != TRUE && (GDISP_NEED_CLIP || GDISP_NEED_VALIDATION)
coord_t clipx0, clipy0;
coord_t clipx1, clipy1; /* not inclusive */
#endif
// Driver call parameters
struct {
coord_t x, y;
coord_t cx, cy;
coord_t x1, y1;
coord_t x2, y2;
color_t color;
void *ptr;
} p;
// In call working buffers
#if GDISP_NEED_TEXT
// Text rendering parameters
struct {
font_t font;
color_t color;
color_t bgcolor;
coord_t clipx0, clipy0;
coord_t clipx1, clipy1;
} t;
#endif
#if GDISP_LINEBUF_SIZE != 0 && ((GDISP_NEED_SCROLL && !GDISP_HARDWARE_SCROLL) || (!GDISP_HARDWARE_STREAM_WRITE && GDISP_HARDWARE_BITFILLS))
// A pixel line buffer
color_t linebuf[GDISP_LINEBUF_SIZE];
#endif
};
#if GDISP_TOTAL_CONTROLLERS == 1 || defined(GDISP_DRIVER_VMT) || defined(__DOXYGEN__)
#if GDISP_TOTAL_CONTROLLERS > 1
#define LLDSPEC static
#else
#define LLDSPEC
#endif
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Initialize the driver.
* @return TRUE if successful.
* @param[in] g The driver structure
* @param[out] g->g The driver must fill in the GDISPControl structure
*/
LLDSPEC bool_t gdisp_lld_init(GDisplay *g);
#if GDISP_HARDWARE_FLUSH || defined(__DOXYGEN__)
/**
* @brief Flush the current drawing operations to the display
* @pre GDISP_HARDWARE_FLUSH is TRUE
*
* @param[in] g The driver structure
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC void gdisp_lld_flush(GDisplay *g);
#endif
#if GDISP_HARDWARE_STREAM_WRITE || defined(__DOXYGEN__)
/**
* @brief Start a streamed write operation
* @pre GDISP_HARDWARE_STREAM_WRITE is TRUE
*
* @param[in] g The driver structure
* @param[in] g->p.x,g->p.y The window position
* @param[in] g->p.cx,g->p.cy The window size
*
* @note The parameter variables must not be altered by the driver.
* @note Streaming operations that wrap the defined window have
* undefined results.
* @note This must be followed by a call to @p gdisp_lld_write_pos() if GDISP_HARDWARE_STREAM_POS is TRUE.
*/
LLDSPEC void gdisp_lld_write_start(GDisplay *g);
/**
* @brief Send a pixel to the current streaming position and then increment that position
* @pre GDISP_HARDWARE_STREAM_WRITE is TRUE
*
* @param[in] g The driver structure
* @param[in] g->p.color The color to display at the curent position
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC void gdisp_lld_write_color(GDisplay *g);
/**
* @brief End the current streaming write operation
* @pre GDISP_HARDWARE_STREAM_WRITE is TRUE
*
* @param[in] g The driver structure
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC void gdisp_lld_write_stop(GDisplay *g);
#if GDISP_HARDWARE_STREAM_POS || defined(__DOXYGEN__)
/**
* @brief Change the current position within the current streaming window
* @pre GDISP_HARDWARE_STREAM_POS is TRUE and GDISP_HARDWARE_STREAM_WRITE is TRUE
*
* @param[in] g The driver structure
* @param[in] g->p.x,g->p.y The new position (which will always be within the existing stream window)
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC void gdisp_lld_write_pos(GDisplay *g);
#endif
#endif
#if GDISP_HARDWARE_STREAM_READ || defined(__DOXYGEN__)
/**
* @brief Start a streamed read operation
* @pre GDISP_HARDWARE_STREAM_READ is TRUE
*
* @param[in] g The driver structure
* @param[in] g->p.x,g->p.y The window position
* @param[in] g->p.cx,g->p.cy The window size
*
* @note The parameter variables must not be altered by the driver.
* @note Streaming operations that wrap the defined window have
* undefined results.
*/
LLDSPEC void gdisp_lld_read_start(GDisplay *g);
/**
* @brief Read a pixel from the current streaming position and then increment that position
* @return The color at the current position
* @pre GDISP_HARDWARE_STREAM_READ is TRUE
*
* @param[in] g The driver structure
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC color_t gdisp_lld_read_color(GDisplay *g);
/**
* @brief End the current streaming operation
* @pre GDISP_HARDWARE_STREAM_READ is TRUE
*
* @param[in] g The driver structure
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC void gdisp_lld_read_stop(GDisplay *g);
#endif
#if GDISP_HARDWARE_DRAWPIXEL || defined(__DOXYGEN__)
/**
* @brief Draw a pixel
* @pre GDISP_HARDWARE_DRAWPIXEL is TRUE
*
* @param[in] g The driver structure
* @param[in] g->p.x,g->p.y The pixel position
* @param[in] g->p.color The color to set
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC void gdisp_lld_draw_pixel(GDisplay *g);
#endif
#if GDISP_HARDWARE_CLEARS || defined(__DOXYGEN__)
/**
* @brief Clear the screen using the defined color
* @pre GDISP_HARDWARE_CLEARS is TRUE
*
* @param[in] g The driver structure
* @param[in] g->p.color The color to set
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC void gdisp_lld_clear(GDisplay *g);
#endif
#if GDISP_HARDWARE_FILLS || defined(__DOXYGEN__)
/**
* @brief Fill an area with a single color
* @pre GDISP_HARDWARE_FILLS is TRUE
*
* @param[in] g The driver structure
* @param[in] g->p.x,g->p.y The area position
* @param[in] g->p.cx,g->p.cy The area size
* @param[in] g->p.color The color to set
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC void gdisp_lld_fill_area(GDisplay *g);
#endif
#if GDISP_HARDWARE_BITFILLS || defined(__DOXYGEN__)
/**
* @brief Fill an area using a bitmap
* @pre GDISP_HARDWARE_BITFILLS is TRUE
*
* @param[in] g The driver structure
* @param[in] g->p.x,g->p.y The area position
* @param[in] g->p.cx,g->p.cy The area size
* @param[in] g->p.x1,g->p.y1 The starting position in the bitmap
* @param[in] g->p.x2 The width of a bitmap line
* @param[in] g->p.ptr The pointer to the bitmap
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC void gdisp_lld_blit_area(GDisplay *g);
#endif
#if GDISP_HARDWARE_PIXELREAD || defined(__DOXYGEN__)
/**
* @brief Read a pixel from the display
* @return The color at the defined position
* @pre GDISP_HARDWARE_PIXELREAD is TRUE (and the application needs it)
*
* @param[in] g The driver structure
* @param[in] g->p.x,g->p.y The pixel position
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC color_t gdisp_lld_get_pixel_color(GDisplay *g);
#endif
#if (GDISP_HARDWARE_SCROLL && GDISP_NEED_SCROLL) || defined(__DOXYGEN__)
/**
* @brief Scroll an area of the screen
* @pre GDISP_HARDWARE_SCROLL is TRUE (and the application needs it)
*
* @param[in] g The driver structure
* @param[in] g->p.x,g->p.y The area position
* @param[in] g->p.cx,g->p.cy The area size
* @param[in] g->p.y1 The number of lines to scroll (positive or negative)
*
* @note The parameter variables must not be altered by the driver.
* @note This can be easily implemented if the hardware supports
* display area to display area copying.
* @note Clearing the exposed area on the scroll operation is not
* needed as the high level code handles this.
*/
LLDSPEC void gdisp_lld_vertical_scroll(GDisplay *g);
#endif
#if (GDISP_HARDWARE_CONTROL && GDISP_NEED_CONTROL) || defined(__DOXYGEN__)
/**
* @brief Control some feature of the hardware
* @pre GDISP_HARDWARE_CONTROL is TRUE (and the application needs it)
*
* @param[in] g The driver structure
* @param[in] g->p.x The operation to perform
* @param[in] g->p.ptr The operation parameter
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC void gdisp_lld_control(GDisplay *g);
#endif
#if (GDISP_HARDWARE_QUERY && GDISP_NEED_QUERY) || defined(__DOXYGEN__)
/**
* @brief Query some feature of the hardware
* @return The information requested (typecast as void *)
* @pre GDISP_HARDWARE_QUERY is TRUE (and the application needs it)
*
* @param[in] g The driver structure
* @param[in] g->p.x What to query
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC void *gdisp_lld_query(GDisplay *g); // Uses p.x (=what);
#endif
#if (GDISP_HARDWARE_CLIP && (GDISP_NEED_CLIP || GDISP_NEED_VALIDATION)) || defined(__DOXYGEN__)
/**
* @brief Set the hardware clipping area
* @pre GDISP_HARDWARE_CLIP is TRUE (and the application needs it)
*
* @param[in] g The driver structure
* @param[in] g->p.x,g->p.y The area position
* @param[in] g->p.cx,g->p.cy The area size
*
* @note The parameter variables must not be altered by the driver.
*/
LLDSPEC void gdisp_lld_set_clip(GDisplay *g);
#endif
#ifdef __cplusplus
}
#endif
#endif // GDISP_TOTAL_CONTROLLERS == 1 || defined(GDISP_DRIVER_VMT)
#if GDISP_TOTAL_CONTROLLERS > 1
typedef struct GDISPVMT {
bool_t (*init)(GDisplay *g);
void (*writestart)(GDisplay *g); // Uses p.x,p.y p.cx,p.cy
void (*writepos)(GDisplay *g); // Uses p.x,p.y
void (*writecolor)(GDisplay *g); // Uses p.color
void (*writestop)(GDisplay *g); // Uses no parameters
void (*readstart)(GDisplay *g); // Uses p.x,p.y p.cx,p.cy
color_t (*readcolor)(GDisplay *g); // Uses no parameters
void (*readstop)(GDisplay *g); // Uses no parameters
void (*pixel)(GDisplay *g); // Uses p.x,p.y p.color
void (*clear)(GDisplay *g); // Uses p.color
void (*fill)(GDisplay *g); // Uses p.x,p.y p.cx,p.cy p.color
void (*blit)(GDisplay *g); // Uses p.x,p.y p.cx,p.cy p.x1,p.y1 (=srcx,srcy) p.x2 (=srccx), p.ptr (=buffer)
color_t (*get)(GDisplay *g); // Uses p.x,p.y
void (*vscroll)(GDisplay *g); // Uses p.x,p.y p.cx,p.cy, p.y1 (=lines) p.color
void (*control)(GDisplay *g); // Uses p.x (=what) p.ptr (=value)
void *(*query)(GDisplay *g); // Uses p.x (=what);
void (*setclip)(GDisplay *g); // Uses p.x,p.y p.cx,p.cy
void (*flush)(GDisplay *g); // Uses no parameters
} GDISPVMT;
#if defined(GDISP_DRIVER_VMT)
#if !GDISP_HARDWARE_STREAM_WRITE && !GDISP_HARDWARE_DRAWPIXEL
#error "GDISP Driver: Either GDISP_HARDWARE_STREAM_WRITE or GDISP_HARDWARE_DRAWPIXEL must be TRUE"
#endif
const GDISPVMT const GDISP_DRIVER_VMT[1] = {{
gdisp_lld_init,
#if GDISP_HARDWARE_FLUSH
gdisp_lld_flush,
#else
0,
#endif
#if GDISP_HARDWARE_STREAM_WRITE
gdisp_lld_write_start,
#if GDISP_HARDWARE_STREAM_POS
gdisp_lld_write_pos,
#else
0,
#endif
gdisp_lld_write_color,
gdisp_lld_write_stop,
#else
0, 0, 0, 0,
#endif
#if GDISP_HARDWARE_STREAM_READ
gdisp_lld_read_start,
gdisp_lld_read_color,
gdisp_lld_read_stop,
#else
0, 0, 0,
#endif
#if GDISP_HARDWARE_DRAWPIXEL
gdisp_lld_draw_pixel,
#else
0,
#endif
#if GDISP_HARDWARE_CLEARS
gdisp_lld_clear,
#else
0,
#endif
#if GDISP_HARDWARE_FILLS
gdisp_lld_fill_area,
#else
0,
#endif
#if GDISP_HARDWARE_BITFILLS
gdisp_lld_blit_area,
#else
0,
#endif
#if GDISP_HARDWARE_PIXELREAD
gdisp_lld_get_pixel_color,
#else
0,
#endif
#if GDISP_HARDWARE_SCROLL && GDISP_NEED_SCROLL
gdisp_lld_vertical_scroll,
#else
0,
#endif
#if GDISP_HARDWARE_CONTROL && GDISP_NEED_CONTROL
gdisp_lld_control,
#else
0,
#endif
#if GDISP_HARDWARE_QUERY && GDISP_NEED_QUERY
gdisp_lld_query,
#else
0,
#endif
#if GDISP_HARDWARE_CLIP && (GDISP_NEED_CLIP || GDISP_NEED_VALIDATION)
gdisp_lld_set_clip,
#else
0,
#endif
}};
#else
#define gdisp_lld_init(g) g->vmt->init(g)
#define gdisp_lld_flush(g) g->vmt->flush(g)
#define gdisp_lld_write_start(g) g->vmt->writestart(g)
#define gdisp_lld_write_pos(g) g->vmt->writepos(g)
#define gdisp_lld_write_color(g) g->vmt->writecolor(g)
#define gdisp_lld_write_stop(g) g->vmt->writestop(g)
#define gdisp_lld_read_start(g) g->vmt->readstart(g)
#define gdisp_lld_read_color(g) g->vmt->readcolor(g)
#define gdisp_lld_read_stop(g) g->vmt->readstop(g)
#define gdisp_lld_draw_pixel(g) g->vmt->pixel(g)
#define gdisp_lld_clear(g) g->vmt->clear(g)
#define gdisp_lld_fill_area(g) g->vmt->fill(g)
#define gdisp_lld_blit_area(g) g->vmt->blit(g)
#define gdisp_lld_get_pixel_color(g) g->vmt->get(g)
#define gdisp_lld_vertical_scroll(g) g->vmt->vscroll(g)
#define gdisp_lld_control(g) g->vmt->control(g)
#define gdisp_lld_query(g) g->vmt->query(g)
#define gdisp_lld_set_clip(g) g->vmt->setclip(g)
#endif // GDISP_LLD_DECLARATIONS
#endif // GDISP_TOTAL_CONTROLLERS > 1
/* Verify information for packed pixels and define a non-packed pixel macro */
#if !GDISP_PACKED_PIXELS
#define gdispPackPixels(buf,cx,x,y,c) { ((color_t *)(buf))[(y)*(cx)+(x)] = (c); }
#elif !GDISP_HARDWARE_BITFILLS
#error "GDISP: packed pixel formats are only supported for hardware accelerated drivers."
#elif GDISP_PIXELFORMAT != GDISP_PIXELFORMAT_RGB888 \
&& GDISP_PIXELFORMAT != GDISP_PIXELFORMAT_RGB444 \
&& GDISP_PIXELFORMAT != GDISP_PIXELFORMAT_RGB666 \
&& GDISP_PIXELFORMAT != GDISP_PIXELFORMAT_CUSTOM
#error "GDISP: A packed pixel format has been specified for an unsupported pixel format."
#endif
/* Support routine for packed pixel formats */
#if !defined(gdispPackPixels) || defined(__DOXYGEN__)
/**
* @brief Pack a pixel into a pixel buffer.
* @note This function performs no buffer boundary checking
* regardless of whether GDISP_NEED_CLIP has been specified.
*
* @param[in] buf The buffer to put the pixel in
* @param[in] cx The width of a pixel line
* @param[in] x, y The location of the pixel to place
* @param[in] color The color to put into the buffer
*
* @api
*/
void gdispPackPixels(const pixel_t *buf, coord_t cx, coord_t x, coord_t y, color_t color);
#endif
#endif /* GFX_USE_GDISP */
#endif /* _GDISP_LLD_H */
/** @} */
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