Diff: example4_c270.cpp

Revision:

3:2709bbf8baae

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/example4_c270.cpp	Thu Oct 25 11:02:17 2012 +0000
@@ -0,0 +1,103 @@
+#if 1
+//
+// dump YCrCb
+//      [Y0, Y1],
+//      (Cr, Cb),
+//
+#include "mbed.h"
+#include "BaseJpegDecode.h"
+#include "uvc.h"
+#include "Terminal.h"
+
+// Logitech C270
+#define WIDTH  160
+#define HEIGHT 120
+
+#define ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);};
+
+DigitalOut led1(LED1), led2(LED2), led3(LED3), led4(LED4);
+Terminal term(USBTX, USBRX);
+
+class Decode1 : public BaseJpegDecode {
+public:
+    int16_t m_y0[WIDTH/16*HEIGHT/8];
+    int16_t m_y1[WIDTH/16*HEIGHT/8];
+    int16_t m_cb[WIDTH/16*HEIGHT/8];
+    int16_t m_cr[WIDTH/16*HEIGHT/8];
+    virtual void outputDC(int mcu, int block, int value) {
+        if (mcu >= (WIDTH/16*HEIGHT/8)) {
+            return;
+        }
+        switch(block) { // 0-1:Y 2:Cb 3:Cr
+            case 0: m_y0[mcu] = value * qt[0][0]; break;
+            case 1: m_y1[mcu] = value * qt[0][0]; break;
+            case 2: m_cb[mcu] = value * qt[1][0]; break;
+            case 3: m_cr[mcu] = value * qt[1][0]; break;
+        }
+    }
+    virtual void outputAC(int mcu, int block, int scan, int value){};
+    virtual void outputMARK(uint8_t c){
+        if (c == 0xd9) { // EOI
+            led2 = !led2;
+        }
+    };
+};
+
+Decode1* decode = NULL;
+
+void callback_motion_jpeg(uint16_t frame, uint8_t* buf, int len)
+{
+    if (decode) {
+        decode->input(buf+12, len-12);
+    }
+    led1 = buf[1]&1; // FID
+}
+
+int main() {
+    term.baud(921600);
+    printf("%s\n", __FILE__);
+
+    decode = new Decode1;
+    ASSERT(decode);
+    uvc* cam = new uvc;
+    ASSERT(cam);
+    cam->SetImageSize(WIDTH, HEIGHT);
+    cam->SetFrameInterval(2000000); // 5.0fps
+    cam->setOnResult(callback_motion_jpeg);
+    ASSERT(cam->setup() >= 0);
+    term.cls();
+    while(1) {
+        int column = 0;
+        term.locate(0, column++);
+        term.printf("Y: qt:");
+        for(int i = 0; i < 16; i++) {
+            term.printf(" %d", decode->qt[0][i]);
+        }
+        term.printf("]");
+        for(int y = 0; y < HEIGHT/8; y++) {
+            term.locate(0, column++);
+            for(int x = 0; x < WIDTH/16; x++) {
+                int mcu = y*WIDTH/16+x;
+                term.printf("%+5d,%+5d,", decode->m_y0[mcu], decode->m_y1[mcu]);
+                cam->poll();
+            }
+        }
+        term.locate(0, column++);
+        term.printf("CbCr: [qt:");
+        for(int i = 0; i < 16; i++) {
+            term.printf(" %d", decode->qt[1][i]);
+        }
+        term.printf("]");
+        for(int y = 0; y < HEIGHT/8; y++) {
+            term.locate(0, column++);
+            for(int x = 0; x < WIDTH/16; x++) {
+                int mcu = y*WIDTH/16+x;
+                term.printf("%+5d,%+5d|", decode->m_cb[mcu], decode->m_cr[mcu]);
+                cam->poll();
+            }
+        }
+        cam->wait_ms(500);
+        led3 = !led3;
+    }
+}
+#endif