File content as of revision 6:e7bafd9bba1a:

/*
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
 
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/

#include "mbed.h"
#include "DisplayBace.h"
#include "RGA.h"
#include "rtos.h"
#include "SDFileSystem.h"

#define SVGA                                (0u)  /*  800 x 600 */
#define XGA                                 (1u)  /* 1024 x 768 */
#define HD_720p                             (2u)  /* 1280 x 720 */
#define WXGA                                (3u)  /* 1280 x 800 */

/**** User Selection *********/
#define WAIT_TIME                           (10000) /* wait time (ms) */
#define DISSOLVE_STEP_NUM                   (16)    /* minimum 1 */
#define SCROLL_STEP_NUM                     (8)     /* minimum 1 */
#define SCROLL_DIRECTION                    (-1)    /* Select 1(left to right) or -1(right to left) */
#define LCD_SIZE                            HD_720p /* Select SVGA, XGA, HD_720p or WXGA */
/*****************************/

#define FILE_NAME_LEN                       (64)
#define TEXT_SIZE                           (64 + 1) //null-terminated
#define FLD_PATH                            "/sd/"
#define MAX_JPEG_SIZE                       (1024 * 450)

/* LCD Parameter */
#define LCD_INPUT_CLOCK                     (66.67f)
#if ( LCD_SIZE == SVGA )
#define LCD_OUTPUT_CLOCK                    (40.000f)
#define LCD_PIXEL_WIDTH                     (800u)
#define LCD_PIXEL_HEIGHT                    (600u)
#define LCD_H_BACK_PORCH                    (88u)
#define LCD_H_FRONT_PORCH                   (40u)
#define LCD_H_SYNC_WIDTH                    (128u)
#define LCD_V_BACK_PORCH                    (23u)
#define LCD_V_FRONT_PORCH                   (1u)
#define LCD_V_SYNC_WIDTH                    (4u)
#elif ( LCD_SIZE == XGA )
#define LCD_OUTPUT_CLOCK                    (65.000f)
#define LCD_PIXEL_WIDTH                     (1024u)
#define LCD_PIXEL_HEIGHT                    (768u)
#define LCD_H_BACK_PORCH                    (160u)
#define LCD_H_FRONT_PORCH                   (24u)
#define LCD_H_SYNC_WIDTH                    (136u)
#define LCD_V_BACK_PORCH                    (29u)
#define LCD_V_FRONT_PORCH                   (3u)
#define LCD_V_SYNC_WIDTH                    (6u)
#elif ( LCD_SIZE == HD_720p )
#define LCD_OUTPUT_CLOCK                    (74.1800f)
#define LCD_PIXEL_WIDTH                     (1280u)
#define LCD_PIXEL_HEIGHT                    (720u)
#define LCD_H_BACK_PORCH                    (220u)
#define LCD_H_FRONT_PORCH                   (70u)
#define LCD_H_SYNC_WIDTH                    (80u)
#define LCD_V_BACK_PORCH                    (20u)
#define LCD_V_FRONT_PORCH                   (5u)
#define LCD_V_SYNC_WIDTH                    (5u)
#elif ( LCD_SIZE == WXGA )
#define LCD_OUTPUT_CLOCK                    (85.4000f)
#define LCD_PIXEL_WIDTH                     (1280u)
#define LCD_PIXEL_HEIGHT                    (800u)
#define LCD_H_BACK_PORCH                    (200u)
#define LCD_H_FRONT_PORCH                   (64u)
#define LCD_H_SYNC_WIDTH                    (136u)
#define LCD_V_BACK_PORCH                    (24u)
#define LCD_V_FRONT_PORCH                   (1u)
#define LCD_V_SYNC_WIDTH                    (3u)
#endif

/* FRAME BUFFER Parameter */
#define FRAME_BUFFER_BYTE_PER_PIXEL         (2)
#define FRAME_BUFFER_STRIDE                 (((LCD_PIXEL_WIDTH * FRAME_BUFFER_BYTE_PER_PIXEL) + 31u) & ~31u)

DigitalIn   button(USER_BUTTON0);
I2C         i2c(I2C_SDA, I2C_SCL);
DisplayBase Display;
Canvas2D_ContextClass canvas2d;

#if defined(__ICCARM__)
#pragma data_alignment=32
static uint8_t user_frame_buffer[FRAME_BUFFER_STRIDE * LCD_PIXEL_HEIGHT];
static uint8_t user_frame_buffer2[FRAME_BUFFER_STRIDE * LCD_PIXEL_HEIGHT];
#pragma data_alignment=8
static uint8_t JpegBuffer[MAX_JPEG_SIZE]@ ".mirrorram";  //8 bytes aligned!;
#pragma data_alignment=4
#else
static uint8_t user_frame_buffer[FRAME_BUFFER_STRIDE * LCD_PIXEL_HEIGHT]__attribute((aligned(32)));  /* 32 bytes aligned */
static uint8_t user_frame_buffer2[FRAME_BUFFER_STRIDE * LCD_PIXEL_HEIGHT]__attribute((aligned(32))); /* 32 bytes aligned */
static uint8_t JpegBuffer[MAX_JPEG_SIZE]__attribute((section("NC_BSS"),aligned(8)));  //8 bytes aligned!;
#endif
static frame_buffer_t frame_buffer_info;
static volatile int32_t vsync_count = 0;

static void IntCallbackFunc_Vsync(DisplayBase::int_type_t int_type) {
    /* Interrupt callback function for Vsync interruption */
    if (vsync_count > 0) {
        vsync_count--;
    }
}

static void Wait_Vsync(const int32_t wait_count) {
    /* Wait for the specified number of times Vsync occurs */
    vsync_count = wait_count;
    while (vsync_count > 0) {
        /* Do nothing */
    }
}

static void Init_LCD_Display(uint8_t* disp_buf) {
    /* Create DisplayBase object */
    DisplayBase::graphics_error_t error;
    DisplayBase::rect_t rect;
    DisplayBase::lcd_config_t lcd_config;
    PinName lcd_pin[28] = {
        /* data pin */
        P11_15, P11_14, P11_13, P11_12, P5_7, P5_6, P5_5, P5_4, P5_3, P5_2, P5_1, P5_0,
        P4_7, P4_6, P4_5, P4_4, P10_12, P10_13, P10_14, P10_15, P3_15, P3_14, P3_13,
        P3_12, P3_11, P3_10, P3_9, P3_8
    };

    Thread::wait(100);

    lcd_config.lcd_type             = DisplayBase::LCD_TYPE_PARALLEL_RGB;
    lcd_config.intputClock          = LCD_INPUT_CLOCK;
    lcd_config.outputClock          = LCD_OUTPUT_CLOCK;
    lcd_config.lcd_outformat        = DisplayBase::LCD_OUTFORMAT_RGB888;
    lcd_config.lcd_edge             = DisplayBase::EDGE_RISING;
    lcd_config.h_toatal_period      = (LCD_PIXEL_WIDTH  + LCD_H_FRONT_PORCH + LCD_H_BACK_PORCH);
    lcd_config.v_toatal_period      = (LCD_PIXEL_HEIGHT + LCD_V_FRONT_PORCH + LCD_V_BACK_PORCH);

    lcd_config.h_disp_widht         = LCD_PIXEL_WIDTH;
    lcd_config.v_disp_widht         = LCD_PIXEL_HEIGHT;
    lcd_config.h_back_porch         = LCD_H_BACK_PORCH;
    lcd_config.v_back_porch         = LCD_V_BACK_PORCH;

    lcd_config.h_sync_port          = DisplayBase::LCD_TCON_PIN_1;
    lcd_config.h_sync_port_polarity = DisplayBase::SIG_POL_NOT_INVERTED;
    lcd_config.h_sync_width         = LCD_H_SYNC_WIDTH;

    lcd_config.v_sync_port          = DisplayBase::LCD_TCON_PIN_2;
    lcd_config.v_sync_port_polarity = DisplayBase::SIG_POL_NOT_INVERTED;
    lcd_config.v_sync_width         = LCD_V_SYNC_WIDTH;

    lcd_config.de_port              = DisplayBase::LCD_TCON_PIN_0;
    lcd_config.de_port_polarity     = DisplayBase::SIG_POL_NOT_INVERTED;

    /* Graphics initialization process */
    error = Display.Graphics_init(&lcd_config);
    if (error != DisplayBase::GRAPHICS_OK) {
        printf("Line %d, error %d\n", __LINE__, error);
        while (1);
    }

    /* Interrupt callback function setting (Vsync signal output from scaler 0) */
    error = Display.Graphics_Irq_Handler_Set(DisplayBase::INT_TYPE_S0_LO_VSYNC, 0, IntCallbackFunc_Vsync);
    if (error != DisplayBase::GRAPHICS_OK) {
        printf("Line %d, error %d\n", __LINE__, error);
        while (1);
    }

    Display.Graphics_Lcd_Port_Init(lcd_pin, 28);
    rect.vs = 0;
    rect.vw = LCD_PIXEL_HEIGHT;
    rect.hs = 0;
    rect.hw = LCD_PIXEL_WIDTH;

    Display.Graphics_Read_Setting(
        DisplayBase::GRAPHICS_LAYER_0,
        (void *)disp_buf,
        FRAME_BUFFER_STRIDE,
        DisplayBase::GRAPHICS_FORMAT_RGB565,
        DisplayBase::WR_RD_WRSWA_32_16BIT,
        &rect
    );
}

static void Start_LCD_Display(void) {
    Display.Graphics_Start(DisplayBase::GRAPHICS_LAYER_0);
}

static void Update_LCD_Display(frame_buffer_t * frmbuf_info) {
    Display.Graphics_Read_Change(DisplayBase::GRAPHICS_LAYER_0,
     (void *)frmbuf_info->buffer_address[frmbuf_info->draw_buffer_index]);
    Wait_Vsync(1);
}

static void Swap_FrameBuffer(frame_buffer_t * frmbuf_info) {
    if (frmbuf_info->draw_buffer_index == 1) {
        frmbuf_info->draw_buffer_index = 0;
    } else {
        frmbuf_info->draw_buffer_index = 1;
    }
}

static void draw_image(frame_buffer_t* frmbuf_info, const graphics_image_t* image_new) {
    Swap_FrameBuffer(frmbuf_info);
    /* Clear */
    canvas2d.clearRect(0, 0, frmbuf_info->width, frmbuf_info->height);
    /* Draw a image */
    canvas2d.globalAlpha = 1.0f;
    canvas2d.drawImage((const graphics_image_t*)image_new, 0, 0, frmbuf_info->width, frmbuf_info->height);
    R_OSPL_CLEAR_ERROR();
    /* Complete drawing */
    R_GRAPHICS_Finish(canvas2d.c_LanguageContext);
    Update_LCD_Display(frmbuf_info);
}

static void draw_image_scroll(frame_buffer_t* frmbuf_info, const graphics_image_t* image_last,
                              const graphics_image_t* image_new, float32_t scroll) {
    Swap_FrameBuffer(frmbuf_info);
    /* Clear */
    canvas2d.clearRect(0, 0, frmbuf_info->width, frmbuf_info->height);
    /* Draw a image */
    canvas2d.globalAlpha = 1.0f;
    canvas2d.drawImage((const graphics_image_t*)image_last,
                       (int_t)(frmbuf_info->width * scroll) * SCROLL_DIRECTION, 0,
                       frmbuf_info->width, frmbuf_info->height);
    R_OSPL_CLEAR_ERROR();
    canvas2d.globalAlpha = 1.0f;
    canvas2d.drawImage((const graphics_image_t*)image_new,
                       ((int_t)(frmbuf_info->width * scroll) - frmbuf_info->width) * SCROLL_DIRECTION, 0,
                       frmbuf_info->width, frmbuf_info->height);
    R_OSPL_CLEAR_ERROR();
    /* Complete drawing */
    R_GRAPHICS_Finish(canvas2d.c_LanguageContext);
    Update_LCD_Display(frmbuf_info);
}

static void draw_image_dissolve(frame_buffer_t* frmbuf_info, const graphics_image_t* image_last,
                                const graphics_image_t* image_new, float32_t alpha) {
    Swap_FrameBuffer(frmbuf_info);
    /* Clear */
    canvas2d.clearRect(0, 0, frmbuf_info->width, frmbuf_info->height);
    /* Draw a image */
    canvas2d.globalAlpha = 1.0f - alpha;
    canvas2d.drawImage((const graphics_image_t*)image_last, 0, 0, frmbuf_info->width, frmbuf_info->height);
    R_OSPL_CLEAR_ERROR();
    canvas2d.globalAlpha = alpha;
    canvas2d.drawImage((const graphics_image_t*)image_new, 0, 0, frmbuf_info->width, frmbuf_info->height);
    R_OSPL_CLEAR_ERROR();
    /* Complete drawing */
    R_GRAPHICS_Finish(canvas2d.c_LanguageContext);
    Update_LCD_Display(frmbuf_info);
}

int main(void) {
    errnum_t err;
    Canvas2D_ContextConfigClass config;

    memset(user_frame_buffer, 0, sizeof(user_frame_buffer));
    memset(user_frame_buffer2, 0, sizeof(user_frame_buffer2));
    frame_buffer_info.buffer_address[0] = user_frame_buffer;
    frame_buffer_info.buffer_address[1] = user_frame_buffer2;
    frame_buffer_info.buffer_count      = 2;
    frame_buffer_info.show_buffer_index = 0;
    frame_buffer_info.draw_buffer_index = 0;
    frame_buffer_info.width             = LCD_PIXEL_WIDTH;
    frame_buffer_info.byte_per_pixel    = FRAME_BUFFER_BYTE_PER_PIXEL;
    frame_buffer_info.stride            = LCD_PIXEL_WIDTH * FRAME_BUFFER_BYTE_PER_PIXEL;
    frame_buffer_info.height            = LCD_PIXEL_HEIGHT;
    frame_buffer_info.pixel_format      = PIXEL_FORMAT_RGB565;
    Init_LCD_Display(frame_buffer_info.buffer_address[0]);

    config.frame_buffer = &frame_buffer_info;
    canvas2d = R_RGA_New_Canvas2D_ContextClass(config);
    err = R_OSPL_GetErrNum();
    if (err != 0) {
        printf("Line %d, error %d\n", __LINE__, err);
        while (1);
    }
    Start_LCD_Display();

    SDFileSystem sd(P8_5, P8_6, P8_3, P8_4, "sd");
    FILE * fp = NULL;
    DIR  * d = NULL;
    char file_path[sizeof(FLD_PATH) + FILE_NAME_LEN];
    int jpeg_toggle = 0;
    bool first_view = true;
    size_t ret;
    Timer  t;
    uint8_t * p_JpegBuffer[2];

    p_JpegBuffer[0] = JpegBuffer;
    p_JpegBuffer[1] = new uint8_t[MAX_JPEG_SIZE];

    while (1) {
        // file search
        if (d == NULL) {
            d = opendir(FLD_PATH);
        }
        struct dirent * p;
        while ((p = readdir(d)) != NULL) {
            size_t len = strlen(p->d_name);
            if ((len > 4) && (len < FILE_NAME_LEN)
                && (strncasecmp(&p->d_name[len - 4], ".jpg", 4) == 0)) {
                strcpy(file_path, FLD_PATH);
                strcat(file_path, p->d_name);
                fp = fopen(file_path, "r");
                ret = fread(p_JpegBuffer[jpeg_toggle], sizeof(char), MAX_JPEG_SIZE, fp);
                fclose(fp);
                if (ret < MAX_JPEG_SIZE) {
                    if (first_view != false) {
                        t.reset();
                        t.start();
                        // Effect NONE
                        first_view = false;
                        draw_image(&frame_buffer_info, (const graphics_image_t*)p_JpegBuffer[jpeg_toggle]);
                    } else {
                        bool key_press = false;
                        t.stop();
                        // Wait timeout or key press
                        for (int i = t.read_ms(); i < WAIT_TIME; i += 100) {
                            if (button == 0) {
                                key_press = true;
                                break;
                            }
                            Thread::wait(100);
                        }
                        t.reset();
                        t.start();
                        if (key_press == false) {
                            // Effect DISSOLVE
                            for (int i = 1; i <= DISSOLVE_STEP_NUM; i++) {
                                draw_image_dissolve(&frame_buffer_info,
                                                    (const graphics_image_t*)p_JpegBuffer[!jpeg_toggle],
                                                    (const graphics_image_t*)p_JpegBuffer[jpeg_toggle],
                                                    (float32_t)i / (float32_t)DISSOLVE_STEP_NUM);
                            }
                        } else {
                            // Effect SCROLL
                            for (int i = 1; i <= SCROLL_STEP_NUM; i++) {
                                draw_image_scroll(&frame_buffer_info,
                                                  (const graphics_image_t*)p_JpegBuffer[!jpeg_toggle],
                                                  (const graphics_image_t*)p_JpegBuffer[jpeg_toggle],
                                                  (float32_t)i / (float32_t)SCROLL_STEP_NUM);
                            }
                        }
                    }
                    jpeg_toggle = !jpeg_toggle;
                }
                break;
            }
        }
        if (p == NULL) {
            closedir(d);
            d = NULL;
        }
    }
}