vidcapaud.c

Equator 公司BSP-15 DSP开发平台所有驱动程序源码

/**
*** Copyright (c) 2002 Equator Technologies, Inc.
**/

/************************************************************************
***
***  FILENAME: vidcapaud.c
***
***  DESCRIPTION:
***    Test application for video capture and display with Audio.
***
***    This application captures and displays PAL or NTSC video and Audio.
***
***    Note: The Shark board only has one video input path.
***
***    Sample command lines:
***      NTSC:        vidcap 0 1 0 0  (one input port)
***                   vidcap 0 1 1 0  (alternate between two input ports)
***      PAL:         vidcap 1 1 0 0  (one input port)
***
************************************************************************/

#include <eti/drv.h>

// Macro for checking a driver return code
#define CHECK_RC(rc, fnname) \
    if (ETIDRV_CHECK_ERROR(rc)) { \
        printf(fnname ## " failed, error = 0x%08x\n", rc); \
        exit(1); \
    }

// Main processing function
SCODE ProcessVidcap_Audio(
    BOOL bUsePal,        // Set to 0 to capture/display NTSC
    BOOL bUsePort0,      // Capture from video port 0
    BOOL bUsePort1,      // Capture from video port 1
    int iFramesToCapture // Number of frames to capture (0=capture forever)
)
{
    SCODE err = ETIDRV_OK;
    int iFrameCount;

    err = InitVidcap(bUsePal, bUsePort0, bUsePort1);
    CHECK_RC(err, "InitDRGB");

    if (bUsePal)
      err = InitAudio(25);  // to match PAL frame rate
    else
      err = InitAudio(30);  // to match NTSC frame rate

    CHECK_RC(err, "InitAudio");

    //
    // Loop the desired number of frames (0 = forever)
    //
    iFrameCount   = 0;
    while (iFramesToCapture == 0 ||
           iFrameCount < iFramesToCapture) {
      err = ProcessVidcapSingle(iFrameCount);
      CHECK_RC(err, "ProcessVidcapSingle");

      err = ProcessAudioSingle();
      CHECK_RC(err, "ProcessAudioSingle");

      ++iFrameCount;
    }

    err = CloseVidcap();
    CHECK_RC(err, "CloseVidcap");

    err = CloseAudio();
    CHECK_RC(err, "CloseAudio");

    return err;
}

static void usage (void)
{
   printf("usage: vidcapaud bUsePal bUsePort0 bUsePort1 NumFrames\n");
   printf("  Zero NumFrames will run forever\n");
   printf("  Set bUsePort to 1 for S-Video, 2 for composite\n");
}


SCODE vidcapaud(
    BOOL bUsePal,        // Set to 0 to capture/display NTSC
    BOOL bUsePort0,      // Capture from video port 0
    BOOL bUsePort1,      // Capture from video port 1
    int iFramesToCapture // Number of frames to capture (0=capture forever)
)
{
    if ((bUsePal != 0    &&  bUsePal != 1)   ||   // valid UsePal values
        (bUsePort0 != 0  &&  bUsePort0 != 1) ||   // valid port0 values
        (bUsePort1 != 0  &&  bUsePort1 != 1) ||   // valid port1 values
        (bUsePort0 == 0  &&  bUsePort1 == 0) ||   // no input ports?
        iFramesToCapture < 0) {
        usage();
        exit(1);
    }

    printf("Vidcap and Audio test application\n");

    return ProcessVidcap_Audio (bUsePal, bUsePort0, bUsePort1, iFramesToCapture);

}


#ifndef RTOS 

int main(int argc, char *argv[])
{
    SCODE err;
    BOOL bUsePal;
    BOOL bUsePort0;
    BOOL bUsePort1;
    int iFramesToCapture;
    
    //
    // Get command line arguments
    // 
    if (argc != 5) {
        usage();
        exit(1);
    }

    bUsePal = atoi(argv[1]);
    bUsePort0 = atoi(argv[2]);
    bUsePort1 = atoi(argv[3]);
    iFramesToCapture = atoi(argv[4]);

    err = vidcapaud(bUsePal, bUsePort0, bUsePort1, iFramesToCapture);

    exit(err == ETIDRV_OK ? 0 : 1);
}

#endif