Changeset 66e0a72e52b6c9076ab19cebe52ae0ada6898d4a for oggzcap/src/videoout/encoder_example.c

Timestamp:

02/21/10 23:22:58 (2 years ago)

Author:

Robin Gareus <rgareus@…>

Parents:

9759199714df0cd85f695766c4c5c5d712570365

Children:

6e49c3474539a6c60ade3911897032696b324db7

git-committer:

Robin Gareus <rgareus@priroda.local> / 2010-02-22T00:22:58Z+0100

Message:

sending to TAC! works again...

Files:

• oggzcap/src/videoout/encoder_example.c (modified) (5 diffs)

oggzcap/src/videoout/encoder_example.c

@@ -53 +53 @@
 int keyframe_frequency=1;
 
-int yuv_copy__422_to_420(void *b_2vuy, SInt32 b_2vuy_stride, size_t width, size_t height, size_t offset_x, size_t offset_y, yuv_buffer *dst);
+int yuv_copy__bgra_to_420(void *b_2vuy, SInt32 b_2vuy_stride, size_t width, size_t height, size_t offset_x, size_t offset_y, yuv_buffer *dst);
 //// InOut conversion (from theoraEncoder (xiph))
-int yuv_copy__422_to_420(void *b_2vuy, SInt32 b_2vuy_stride, size_t width, size_t height, size_t offset_x, size_t offset_y, yuv_buffer *dst)
+int yuv_copy__bgra_to_420(void *b_2vuy, SInt32 b_2vuy_stride, size_t width, size_t height, size_t offset_x, size_t offset_y, yuv_buffer *dst)
 {
-        return 1;
+#if 0 // 422 -> 420
     UInt8 *base = b_2vuy;
     size_t off_x = offset_x & ~0x01, off_y = offset_y & ~0x01;
@@ -86 +86 @@
         cr_base += dst->uv_stride;
     }
-        
+#else // RGBA -> 420
+        
+#define _CR ((bptr[(4*i)+2])&0xff)
+#define _CG ((bptr[(4*i)+1])&0xff)
+#define _CB ((bptr[(4*i)+0])&0xff)
+        
+        uint8_t *bptr = (uint8_t*) b_2vuy;
+        int i; int c=0;
+        for (i=0;i<width*height;i++) {
+                double Y  = (0.257 * _CR) + (0.504 * _CG) + (0.098 * _CB) + 16;
+                if (Y<0) dst->y[i]=0;
+                else if (Y>255) dst->y[i]=255;
+                else dst->y[i]=(uint8_t) floor(Y+.5);
+#if 1
+                if (i%2==0 && ((i/width)%2)==0) { // TODO average 4 pixels
+            double V =  (0.439 * _CR) - (0.368 * _CG) - (0.071 * _CB) + 128;
+            double U = -(0.148 * _CR) - (0.291 * _CG) + (0.439 * _CB) + 128;
+                        
+            if (U<0) dst->u[c]=0;
+            else if (U>255) dst->u[c]=255;
+            else dst->u[c]=(uint8_t) floor(U+.5);
+                        
+            if (V<0) dst->v[c]=0;
+            else if (V>255) dst->v[c]=255;
+            else dst->v[c]=(uint8_t) floor(V+.5);
+            c++;
+                }
+#endif
+                
+                
+    }
+#endif  
     return 1;
 }
@@ -185 +216 @@
                 //printf("going to yuv CONVERT\n") ;
                                                 
-                // Transfer the source frame into glob->currentFrame, converting it from chunky YUV422 to planar YUV420.
-                int err = yuv_copy__422_to_420(CVPixelBufferGetBaseAddress(theBuffer),
+                int err = yuv_copy__bgra_to_420(CVPixelBufferGetBaseAddress(theBuffer),
                                                                            CVPixelBufferGetBytesPerRow(theBuffer),
                                                                            pxwidth, pxheight,
@@ -242 +272 @@
         unsigned short  port = outIcePort ;
         
-        if ((myShout = shout_new()) == NULL) printf("oggfwd - Error - allocate pb%s\n") ;
+        if ((myShout = shout_new()) == NULL) printf("oggfwd - Error - allocate pb\n") ;
         if (shout_set_host(myShout, outIceIp) != SHOUTERR_SUCCESS) printf("oggfwd - Error - set host pb...%s\n",shout_get_error(myShout)) ;
         if (shout_set_port(myShout, port) != SHOUTERR_SUCCESS) printf("oggfwd - Error - look at the code to know...\n") ;
@@ -386 +416 @@
         // S2 - InOut - sending header to icecast
         int fwdResH1 = myOggfwd_process(myGlob_og) ;
-        //printf("HEADER /////// Forwarded to Icecast : success ? %d\n", fwdResH1) ;
+        printf("HEADER /////// Forwarded to Icecast : success ? %d\n", fwdResH1) ;
         
         ////////////////////////////////////////////////////////////