* added decoding for RLE-encoded DCT values.
authorkramm <kramm>
Sat, 23 Oct 2004 14:27:20 +0000 (14:27 +0000)
committerkramm <kramm>
Sat, 23 Oct 2004 14:27:20 +0000 (14:27 +0000)
lib/h.263/video.c

index 982b0c0..31391db 100644 (file)
@@ -270,6 +270,10 @@ void get_DC_TCOEF(TAG*tag, int t, int has_dc, int has_tcoef)
     int ac;// = swf_GetBits();
     int index;
     int pos = 0;
+    int line[64];
+    int show_rle_code=0;
+    memset(line, 0, sizeof(line));
+
     //printf("DC:%d\n", dc);
     if(has_dc) {
        dc = swf_GetBits(tag, 8);
@@ -277,12 +281,13 @@ void get_DC_TCOEF(TAG*tag, int t, int has_dc, int has_tcoef)
            printf("error: dc=%d\n", dc);
            exit(1);
        }
-       DEBUG printf(" %d ", dc);
+       DEBUG if(show_rle_code) printf(" %d ", dc);
+       line[pos] = dc;
        pos++;
     }
 
     if(has_tcoef) {
-       DEBUG printf("[");
+       DEBUG if(show_rle_code) printf("[");
        while(1) {
            int last;
            int run;
@@ -296,10 +301,11 @@ void get_DC_TCOEF(TAG*tag, int t, int has_dc, int has_tcoef)
                last = swf_GetBits(tag, 1);
                run = swf_GetBits(tag, 6);
                level = swf_GetBits(tag, 8);
-               if(run)
-                   DEBUG printf(" (%d) E%d", run, level);
-               else
-                   DEBUG printf("E");
+               if(run) {
+                   DEBUG if(show_rle_code) printf(" (%d) E%d", run, level);
+               } else {
+                   DEBUG if(show_rle_code) printf("E");
+               }
                if(level == 0 || level == 128) {
                    printf("error: level=%d\n", level);
                    exit(1);
@@ -311,23 +317,36 @@ void get_DC_TCOEF(TAG*tag, int t, int has_dc, int has_tcoef)
                    level = -level;
                }
                if(run) {
-                   DEBUG printf(" (%d) %s%d", run, level>0?"+":"",level);
+                   DEBUG if(show_rle_code) printf(" (%d) %s%d", run, level>0?"+":"",level);
                } else {
-                   DEBUG printf(" %s%d", level>0?"+":"",level);
+                   DEBUG if(show_rle_code) printf(" %s%d", level>0?"+":"",level);
                }
            }
-           pos += run+1;
+           pos += run;
+           if(pos>=64) {
+               printf("\nerror:bad pos: %d\n", pos);
+               exit(1);
+           }
+           line[pos++] = level;
            //DEBUG printf("run:%d level:%d\n", run, level);
            if(last) {
-               DEBUG printf("] pos: %d", pos);
+               DEBUG if(show_rle_code) printf("] pos: %d", pos);
                if(pos>64) {
                    printf("\nerror:bad pos (%d)\n", pos);
                    exit(1);
                }
-               return;
+               break;
            }
        }
     }
+    DEBUG if(show_rle_code) printf("\n");
+
+    DEBUG printf("[");
+    for(t=0;t<pos;t++) {
+       DEBUG printf("%d", line[t]);
+       DEBUG if(t<pos-1) printf(" ");
+    }
+    DEBUG printf("]\n");
 }
            
 int readMVD(TAG*tag)
@@ -444,14 +463,12 @@ void decode_block(TAG*tag, int pictype)
        int has_tcoef = cbpy_value & (8>>t);
        DEBUG printf("luminance%d ", t);
        get_DC_TCOEF(tag, t, has_intradc, has_tcoef); /*luminance - affected by cbpy*/
-       DEBUG printf("\n");
     }
     for(t=0;t<2;t++) {
        int has_intradc = intrablock;
        int has_tcoef = cbpc & (2>>t);
        DEBUG printf("chrominance%d ", t); 
        get_DC_TCOEF(tag, t, has_intradc, has_tcoef); /*chrominance - affected by mcbc*/
-       DEBUG printf("\n");
     }
 }