interface.h

codec engine中的视频操作界面的历程

/*
 * encode.h
 *
 * ============================================================================
 * 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.
 * ============================================================================
 */

#ifndef _INTERFACE_H
#define _INTERFACE_H

#include <stdio.h>
#include <pthread.h>

/* Enables or disables debug output */
#ifdef __DEBUG
#define DBG(fmt, args...) fprintf(stderr, "Interface Debug: " fmt, ## args)
#define dspTraceDump(ce) Engine_fwriteTrace((ce), "[DSP] ", stderr)
#else
#define DBG(fmt, args...)
#define dspTraceDump(ce)
#endif

#define ERR(fmt, args...) fprintf(stderr, "Interface Error: " fmt, ## args)

/* Button pictures in different states */
#define CTRL_BUTTON               "data/pics/Buttons_SQ.png"
#define CTRL_BUTTON_PAUSE_PRESSED "data/pics/Pause_SQ_SEL.png"
#define CTRL_BUTTON_PLAY_PRESSED  "data/pics/Play_SQ_SEL.png"
#define CTRL_BUTTON_REC_PRESSED   "data/pics/Rec_SQ_SEL.png"
#define CTRL_BUTTON_STOP_PRESSED  "data/pics/Stop_SQ_SEL.png"

#define NAV_BUTTON                "data/pics/Button_DIAG.png"
#define NAV_BUTTON_OK_PRESSED     "data/pics/Center_Diag_SEL.png"
#define NAV_BUTTON_LEFT_PRESSED   "data/pics/Left_Diag_SEL.png"
#define NAV_BUTTON_RIGHT_PRESSED  "data/pics/Right_Diag_SEL.png"
#define NAV_BUTTON_UP_PRESSED     "data/pics/Top_Diag_SEL.png"
#define NAV_BUTTON_DOWN_PRESSED   "data/pics/Bottom_Diag_SEL.png"

#define INFO_BUTTON               "data/pics/INFO_RND.png"
#define INFO_BUTTON_PRESSED       "data/pics/Info_RND_SEL.png"

#define WRONG_BUTTON              "data/pics/nowrongbutton.png"
#define WRONG_BUTTON_PRESSED      "data/pics/wrongbutton.png"

/* Button placements on OSD */
#define CTRL_BUTTON_X         50
#define CTRL_BUTTON_Y         330

#define INFO_BUTTON_X         570
#define INFO_BUTTON_Y         330

/* Text placements on OSD */
#define COLUMN_1              40
#define COLUMN_2              280
#define COLUMN_3              430

#define ROW_1                 YSCALE(50)
#define ROW_2                 YSCALE(80)
#define ROW_3                 YSCALE(110)
#define ROW_4                 YSCALE(140)
#define ROW_5                 YSCALE(170)
#define ROW_6                 YSCALE(200)
#define ROW_7                 YSCALE(230)

/* Function error codes */
#define PLAYBACK        3
#define NOSELECTION     2
#define SUCCESS         0
#define FAILURE         -1

/* True of false enumeration */
#define TRUE            1
#define FALSE           0

/* Scaling factors for the video standards */
#define PAL             12
#define NTSC            10

/* Screen dimensions */
#define SCREEN_WIDTH    720
#define SCREEN_HEIGHT   YSCALE(480)
#define SCREEN_BPP      16
#define SCREEN_SIZE     SCREEN_WIDTH * SCREEN_HEIGHT * SCREEN_BPP / 8

enum Resolutions {
    ZOOM,
    CIF,
    NUM_RESOLUTIONS
};

enum MenuSelections {
    ENCDEC,
    ENC,
    DEC,
    THIRDPARTY
};

enum VideoBpsSelection {
    LOW,
    HIGH
};

enum VideoAlgSelection {
    H264,
    MPEG4
};

/* The demo environment passed to all threads */
typedef struct DemoEnv {
    enum MenuSelections demoSelect;
    enum Resolutions resolution;
    enum VideoAlgSelection videoAlg;
    enum VideoBpsSelection videoBps;
    char *videoFile;
    char *soundFile;
    char *thirdPartyCmdPath;
} DemoEnv;

/* Global data structure */
typedef struct GlobalData {
    unsigned short *display;    /* Pointer to the screen frame buffer */
    int             yFactor;    /* Vertical scaling factor (PAL vs. NTSC) */
} GlobalData;

/* Global data */
extern GlobalData      gbl;

extern pthread_mutex_t dataMutex;

/* Global functions */
extern int startupFxn(DemoEnv *envp);
extern int menuFxn(DemoEnv *envp);
extern int encodeDecodeFxn(DemoEnv *envp);
extern int encodeFxn(DemoEnv *envp);
extern int decodeFxn(DemoEnv *envp);
extern int thirdPartyFxn(DemoEnv *envp);

extern int setOsdTransparency(unsigned char trans);
extern int drawDiagram(char *diagram);

/* Functions to protect the global data */
static inline unsigned short *getDisplay(void)
{
    unsigned short *display;

    pthread_mutex_lock(&dataMutex);
    display = gbl.display;
    pthread_mutex_unlock(&dataMutex);

    return display;
}

static inline void setDisplay(unsigned short *display)
{
    pthread_mutex_lock(&dataMutex);
    gbl.display = display;
    pthread_mutex_unlock(&dataMutex);
}

static inline int getYFactor(void)
{
    int yFactor;

    pthread_mutex_lock(&dataMutex);
    yFactor = gbl.yFactor;
    pthread_mutex_unlock(&dataMutex);

    return yFactor;
}

static inline void setYFactor(int yFactor)
{
    pthread_mutex_lock(&dataMutex);
    gbl.yFactor = yFactor;
    pthread_mutex_unlock(&dataMutex);
}

/* Scale vertically depending on video standard */
#define YSCALE(x) (((x) * getYFactor()) / 10)

/* Cleans up cleanly after a failure */
#define CLEANUP(x)                                  \
        status = (x);                               \
        quit = 1;                                   \
        goto cleanup

/* Breaks a processing loop for a clean exit */
#define BREAK_LOOP(x)                               \
        status = (x);                               \
        quit = 1;                                   \
        break

#endif // _INTERFACE_H