encdec.c

codec engine中的视频操作界面的历程

/*
 * interface.c
 *
 * ============================================================================
 * Copyright (c) Texas Instruments Inc 2005
 *
 * Use of this software is controlled by the terms and conditions found in the
 * license agreement under which this software has been supplied or provided.
 * ============================================================================
 */

/* Standard Linux headers */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <errno.h>

/* Davinci EVM utility libraries */
#include <msp430lib.h>
#include <simplewidget.h>

/* Application header file */
#include "interface.h"

/* The font size */
#define PTSIZE                    20

/* The 0-7 transparency value to use for the OSD */
#define OSD_TRANSPARENCY          0x66

/* The demo diagrams to show on the video window */
#define DEMO_DIAGRAM_NTSC         "data/pics/encodedecode_ntsc.uyvy"
#define DEMO_DIAGRAM_PAL          "data/pics/encodedecode_pal.uyvy"

#define NAV_BUTTON_X              290
#define NAV_BUTTON_Y              310

#define WRONG_BUTTON_X            325
#define WRONG_BUTTON_Y            205

/* The strings to draw on the screen */
#define DEMONAMESTRING            "Encode + Decode"
#define H264CODECSTRING           "H.264 BP Video"
#define NTSCDISPLAYSTRING         "NTSC display"
#define PALDISPLAYSTRING          "PAL display"
#define CIFNTSCRESOLUTIONSTRING   "CIF (352x240)"
#define CIFPALRESOLUTIONSTRING    "CIF (352x288)"
#define ZOOMNTSCRESOLUTIONSTRING  "ZOOM (720x480)"
#define ZOOMPALRESOLUTIONSTRING   "ZOOM (720x576)"

#define SELECTOR_X                420
#define SELECTOR_Y                YSCALE(85)
#define SELECTOR_W                250
#define SELECTOR_H                YSCALE(30)

#define SELECTOR_R                0xff
#define SELECTOR_G                0
#define SELECTOR_B                0

enum InitLevels {
    CREATEDINTERFACE = 1,
    MSP430LIBINITIALIZED,
};

typedef struct Button {
    simplewidget_png *pressedImgPtr;
    simplewidget_png *origImgPtr;
    int               x;
    int               y;
} Button; 

/* OSD widgets */
static simplewidget_screen  simpleScreen      = NULL;

static simplewidget_png     infoImg           = NULL;

static simplewidget_png     navImg            = NULL;
static simplewidget_png     navLeftImg        = NULL;
static simplewidget_png     navRightImg       = NULL;
static simplewidget_png     navUpImg          = NULL;
static simplewidget_png     navDownImg        = NULL;
static simplewidget_png     navOkImg          = NULL;

static simplewidget_png     ctrlImg           = NULL;
static simplewidget_png     ctrlPlayImg       = NULL;
static simplewidget_png     ctrlPauseImg      = NULL;
static simplewidget_png     ctrlStopImg       = NULL;
static simplewidget_png     ctrlRecImg        = NULL;

static simplewidget_png     wrongImg          = NULL;
static simplewidget_png     noWrongImg        = NULL;

static simplewidget_text    demoNameText      = NULL;
static simplewidget_text    videoCodecText    = NULL;
static simplewidget_text    zoomResolutionText  = NULL;
static simplewidget_text    cifResolutionText = NULL;
static simplewidget_text    displayText       = NULL;

static int                  osdTransparency   = OSD_TRANSPARENCY;
static int                  osdVisible        = 1;

enum Buttons {
    CTRLPLAY,
    CTRLPAUSE,
    CTRLREC,
    CTRLSTOP,
    NAVPLUS,
    NAVMINUS,
    WRONG
};

static Button buttons[7] = {
    {
        &ctrlPlayImg,
        &ctrlImg,
        CTRL_BUTTON_X,
        CTRL_BUTTON_Y
    },
    {
        &ctrlPauseImg,
        &ctrlImg,
        CTRL_BUTTON_X,
        CTRL_BUTTON_Y
    },
    {
        &ctrlStopImg,
        &ctrlImg,
        CTRL_BUTTON_X,
        CTRL_BUTTON_Y
    },
    {
        &ctrlRecImg,
        &ctrlImg,
        CTRL_BUTTON_X,
        CTRL_BUTTON_Y
    },
    {
        &navRightImg,
        &navImg,
        NAV_BUTTON_X,
        NAV_BUTTON_Y
    },
    {
        &navLeftImg,
        &navImg,
        NAV_BUTTON_X,
        NAV_BUTTON_Y
    },
    {
        &wrongImg,
        &noWrongImg,
        WRONG_BUTTON_X,
        WRONG_BUTTON_Y
    }
};

static int resolution;

/******************************************************************************
 * uiPressButton
 ******************************************************************************/
static int uiPressButton(enum Buttons btnIdx)
{
    Button *btnPtr = &buttons[btnIdx];

    if (simplewidget_png_show(*btnPtr->pressedImgPtr, simpleScreen,
                              btnPtr->x, YSCALE(btnPtr->y)) == -1) {
        ERR("Failed to show pressed button png image\n");
        return FAILURE;
    }

    usleep(500000);

    if (simplewidget_png_show(*btnPtr->origImgPtr, simpleScreen,
                              btnPtr->x, YSCALE(btnPtr->y)) == -1) {
        ERR("Failed to show original button png image\n");
        return FAILURE;
    }

    return SUCCESS;
}
  
/******************************************************************************
 * uiCreate
 ******************************************************************************/
static int uiCreate(void)
{
    /* Initialize the screens on which to draw widgets */
    if (simplewidget_screen_init(getDisplay(), SCREEN_WIDTH,
                                 SCREEN_HEIGHT, &simpleScreen) == -1) {
        ERR("Failed to initialize simplewidget screen\n");
        return FAILURE;
    }

    /* Create the images for the buttons at the bottom of the screen */
    if (simplewidget_png_create(CTRL_BUTTON, &ctrlImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_png_create(CTRL_BUTTON_PLAY_PRESSED, &ctrlPlayImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_png_create(CTRL_BUTTON_REC_PRESSED, &ctrlRecImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_png_create(CTRL_BUTTON_STOP_PRESSED, &ctrlStopImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_png_create(CTRL_BUTTON_PAUSE_PRESSED,
                                &ctrlPauseImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    /* Create the navigation button in all permutations */
    if (simplewidget_png_create(NAV_BUTTON, &navImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_png_create(NAV_BUTTON_LEFT_PRESSED, &navLeftImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_png_create(NAV_BUTTON_RIGHT_PRESSED, &navRightImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_png_create(NAV_BUTTON_UP_PRESSED, &navUpImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_png_create(NAV_BUTTON_DOWN_PRESSED, &navDownImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_png_create(NAV_BUTTON_OK_PRESSED, &navOkImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_png_create(INFO_BUTTON, &infoImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_png_create(WRONG_BUTTON, &noWrongImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_png_create(WRONG_BUTTON_PRESSED, &wrongImg) == -1) {
        ERR("Failed to create png image\n");
        return FAILURE;
    }

    if (simplewidget_text_create(COLUMN_3, ROW_1, PTSIZE, DEMONAMESTRING,
                                 &demoNameText) == -1) {
        ERR("Failed to create cpu load text\n");
        return FAILURE;
    }

    if (simplewidget_text_create(COLUMN_3, ROW_2, PTSIZE, H264CODECSTRING,
                                 &videoCodecText) == -1) {
        ERR("Failed to create cpu load text\n");
        return FAILURE;
    }

    if (getYFactor() == NTSC) {
        if (simplewidget_text_create(COLUMN_3, ROW_3, PTSIZE,
                                     ZOOMNTSCRESOLUTIONSTRING,
                                     &zoomResolutionText) == -1) {
            ERR("Failed to create kbps text\n");
            return FAILURE;
        }

        if (simplewidget_text_create(COLUMN_3, ROW_3, PTSIZE,
                                     CIFNTSCRESOLUTIONSTRING,
                                     &cifResolutionText) == -1) {
            ERR("Failed to create kbps text\n");
            return FAILURE;
        }

        if (simplewidget_text_create(COLUMN_3, ROW_4, PTSIZE,
                                     NTSCDISPLAYSTRING, &displayText) == -1) {
            ERR("Failed to create display text\n");
            return FAILURE;
        }
    }
    else {              // PAL
        if (simplewidget_text_create(COLUMN_3, ROW_3, PTSIZE,
                                     ZOOMPALRESOLUTIONSTRING,
                                     &zoomResolutionText) == -1) {
            ERR("Failed to create kbps text\n");
            return FAILURE;
        }

        if (simplewidget_text_create(COLUMN_3, ROW_3, PTSIZE,
                                     CIFPALRESOLUTIONSTRING,
                                     &cifResolutionText) == -1) {
            ERR("Failed to create kbps text\n");
            return FAILURE;
        }

        if (simplewidget_text_create(COLUMN_3, ROW_4, PTSIZE,
                                     PALDISPLAYSTRING, &displayText) == -1) {
            ERR("Failed to create display text\n");
            return FAILURE;
        }
    }

    return SUCCESS;
}

/******************************************************************************
 * uiDraw