[xiph-cvs] cvs commit: snatch x11.c
Monty
xiphmont at xiph.org
Mon Apr 1 22:38:06 PST 2002
xiphmont 02/04/01 22:38:05
Modified: . x11.c
Log:
An experiment
Revision Changes Path
1.29 +190 -101 snatch/x11.c
Index: x11.c
===================================================================
RCS file: /usr/local/cvsroot/snatch/x11.c,v
retrieving revision 1.28
retrieving revision 1.29
diff -u -r1.28 -r1.29
--- x11.c 2002/03/09 22:25:21 1.28
+++ x11.c 2002/04/02 06:38:05 1.29
@@ -509,124 +509,213 @@
return(ret);
}
+static unsigned int crc_lookup[256]={
+ 0x00000000,0x04c11db7,0x09823b6e,0x0d4326d9,
+ 0x130476dc,0x17c56b6b,0x1a864db2,0x1e475005,
+ 0x2608edb8,0x22c9f00f,0x2f8ad6d6,0x2b4bcb61,
+ 0x350c9b64,0x31cd86d3,0x3c8ea00a,0x384fbdbd,
+ 0x4c11db70,0x48d0c6c7,0x4593e01e,0x4152fda9,
+ 0x5f15adac,0x5bd4b01b,0x569796c2,0x52568b75,
+ 0x6a1936c8,0x6ed82b7f,0x639b0da6,0x675a1011,
+ 0x791d4014,0x7ddc5da3,0x709f7b7a,0x745e66cd,
+ 0x9823b6e0,0x9ce2ab57,0x91a18d8e,0x95609039,
+ 0x8b27c03c,0x8fe6dd8b,0x82a5fb52,0x8664e6e5,
+ 0xbe2b5b58,0xbaea46ef,0xb7a96036,0xb3687d81,
+ 0xad2f2d84,0xa9ee3033,0xa4ad16ea,0xa06c0b5d,
+ 0xd4326d90,0xd0f37027,0xddb056fe,0xd9714b49,
+ 0xc7361b4c,0xc3f706fb,0xceb42022,0xca753d95,
+ 0xf23a8028,0xf6fb9d9f,0xfbb8bb46,0xff79a6f1,
+ 0xe13ef6f4,0xe5ffeb43,0xe8bccd9a,0xec7dd02d,
+ 0x34867077,0x30476dc0,0x3d044b19,0x39c556ae,
+ 0x278206ab,0x23431b1c,0x2e003dc5,0x2ac12072,
+ 0x128e9dcf,0x164f8078,0x1b0ca6a1,0x1fcdbb16,
+ 0x018aeb13,0x054bf6a4,0x0808d07d,0x0cc9cdca,
+ 0x7897ab07,0x7c56b6b0,0x71159069,0x75d48dde,
+ 0x6b93dddb,0x6f52c06c,0x6211e6b5,0x66d0fb02,
+ 0x5e9f46bf,0x5a5e5b08,0x571d7dd1,0x53dc6066,
+ 0x4d9b3063,0x495a2dd4,0x44190b0d,0x40d816ba,
+ 0xaca5c697,0xa864db20,0xa527fdf9,0xa1e6e04e,
+ 0xbfa1b04b,0xbb60adfc,0xb6238b25,0xb2e29692,
+ 0x8aad2b2f,0x8e6c3698,0x832f1041,0x87ee0df6,
+ 0x99a95df3,0x9d684044,0x902b669d,0x94ea7b2a,
+ 0xe0b41de7,0xe4750050,0xe9362689,0xedf73b3e,
+ 0xf3b06b3b,0xf771768c,0xfa325055,0xfef34de2,
+ 0xc6bcf05f,0xc27dede8,0xcf3ecb31,0xcbffd686,
+ 0xd5b88683,0xd1799b34,0xdc3abded,0xd8fba05a,
+ 0x690ce0ee,0x6dcdfd59,0x608edb80,0x644fc637,
+ 0x7a089632,0x7ec98b85,0x738aad5c,0x774bb0eb,
+ 0x4f040d56,0x4bc510e1,0x46863638,0x42472b8f,
+ 0x5c007b8a,0x58c1663d,0x558240e4,0x51435d53,
+ 0x251d3b9e,0x21dc2629,0x2c9f00f0,0x285e1d47,
+ 0x36194d42,0x32d850f5,0x3f9b762c,0x3b5a6b9b,
+ 0x0315d626,0x07d4cb91,0x0a97ed48,0x0e56f0ff,
+ 0x1011a0fa,0x14d0bd4d,0x19939b94,0x1d528623,
+ 0xf12f560e,0xf5ee4bb9,0xf8ad6d60,0xfc6c70d7,
+ 0xe22b20d2,0xe6ea3d65,0xeba91bbc,0xef68060b,
+ 0xd727bbb6,0xd3e6a601,0xdea580d8,0xda649d6f,
+ 0xc423cd6a,0xc0e2d0dd,0xcda1f604,0xc960ebb3,
+ 0xbd3e8d7e,0xb9ff90c9,0xb4bcb610,0xb07daba7,
+ 0xae3afba2,0xaafbe615,0xa7b8c0cc,0xa379dd7b,
+ 0x9b3660c6,0x9ff77d71,0x92b45ba8,0x9675461f,
+ 0x8832161a,0x8cf30bad,0x81b02d74,0x857130c3,
+ 0x5d8a9099,0x594b8d2e,0x5408abf7,0x50c9b640,
+ 0x4e8ee645,0x4a4ffbf2,0x470cdd2b,0x43cdc09c,
+ 0x7b827d21,0x7f436096,0x7200464f,0x76c15bf8,
+ 0x68860bfd,0x6c47164a,0x61043093,0x65c52d24,
+ 0x119b4be9,0x155a565e,0x18197087,0x1cd86d30,
+ 0x029f3d35,0x065e2082,0x0b1d065b,0x0fdc1bec,
+ 0x3793a651,0x3352bbe6,0x3e119d3f,0x3ad08088,
+ 0x2497d08d,0x2056cd3a,0x2d15ebe3,0x29d4f654,
+ 0xc5a92679,0xc1683bce,0xcc2b1d17,0xc8ea00a0,
+ 0xd6ad50a5,0xd26c4d12,0xdf2f6bcb,0xdbee767c,
+ 0xe3a1cbc1,0xe760d676,0xea23f0af,0xeee2ed18,
+ 0xf0a5bd1d,0xf464a0aa,0xf9278673,0xfde69bc4,
+ 0x89b8fd09,0x8d79e0be,0x803ac667,0x84fbdbd0,
+ 0x9abc8bd5,0x9e7d9662,0x933eb0bb,0x97ffad0c,
+ 0xafb010b1,0xab710d06,0xa6322bdf,0xa2f33668,
+ 0xbcb4666d,0xb8757bda,0xb5365d03,0xb1f740b4};
+
/* yes, it's additional CPU load where we don't want any, but the
savings in required disk bandwidth is more than worth it (YUV 2:4:0
is half the size) */
+/* also, hash the image: Real (for some reason) appears to blit at
+ 30fps regardless of video framerate, so there are lotsa dupes.
+ Hash to see if the frame actually changed. Again, CPU overhead is
+ likely more than made up for in bandwidth savings */
static char *workbuffer;
static long worksize;
-void YUVout(XImage *image){
- pthread_mutex_lock(&output_mutex);
- if(outfile_fd>=0){
- char cbuf[80];
- int i,j,len;
-
- long yuv_w=(image->width>>1)<<1; /* must be even for yuv12 */
- long yuv_h=(image->height>>1)<<1; /* must be even for yuv12 */
- long yuv_n=yuv_w*yuv_h*3/2;
+static unsigned int saved_hash=0;
- long a,b;
+static unsigned int zimage_hash(XImage *image){
+ long bytes=image->bytes_per_line*image->height;
+ unsigned char *data=(unsigned char *)image->data;
+ unsigned int crc_reg=0;
+ int i;
+
+ for(i=0;i<bytes;i++)
+ crc_reg=(crc_reg<<8)^crc_lookup[((crc_reg >> 24)&0xff)^data[i]];
+ return crc_reg;
+}
- pthread_mutex_unlock(&output_mutex);
- bigtime(&a,&b);
- len=sprintf(cbuf,"YUV12 %ld %ld %d %d %ld:",a,b,yuv_w,
- yuv_h,yuv_n);
-
- if(worksize<yuv_n){
- if(worksize==0)
- workbuffer=malloc(yuv_n);
- else
- workbuffer=realloc(workbuffer,yuv_n);
- worksize=yuv_n;
- }
-
- {
- unsigned char *y1=workbuffer;
- unsigned char *y2=workbuffer+yuv_w;
- unsigned char *u=workbuffer+yuv_w*yuv_h;
- unsigned char *v=u+yuv_w*yuv_h/4;
- if(image->byte_order){
+void YUVout(XImage *image){
+ unsigned int hash=zimage_hash(image);
+ if(hash!=saved_hash){
+ saved_hash=hash;
+ pthread_mutex_lock(&output_mutex);
+ if(outfile_fd>=0){
+ char cbuf[80];
+ int i,j,len;
+
+ long yuv_w=(image->width>>1)<<1; /* must be even for yuv12 */
+ long yuv_h=(image->height>>1)<<1; /* must be even for yuv12 */
+ long yuv_n=yuv_w*yuv_h*3/2;
+
+ long a,b;
+
+ pthread_mutex_unlock(&output_mutex);
+ bigtime(&a,&b);
+ len=sprintf(cbuf,"YUV12 %ld %ld %d %d %ld:",a,b,yuv_w,
+ yuv_h,yuv_n);
- for(i=0;i<yuv_h;i+=2){
- unsigned char *ptr1=image->data+i*image->bytes_per_line;
- unsigned char *ptr2=ptr1+image->bytes_per_line;
- for(j=0;j<yuv_w;j+=2){
- long yval,uval,vval;
-
- yval = ptr1[1]*19595 + ptr1[2]*38470 + ptr1[3]*7471;
- uval = ptr1[3]*65536 - ptr1[1]*22117 - ptr1[2]*43419;
- vval = ptr1[1]*65536 - ptr1[2]*54878 - ptr1[3]*10658;
- *y1++ = yval>>16;
-
- yval = ptr1[5]*19595 + ptr1[6]*38470 + ptr1[7]*7471;
- uval += ptr1[7]*65536 - ptr1[5]*22117 - ptr1[6]*43419;
- vval += ptr1[5]*65536 - ptr1[6]*54878 - ptr1[7]*10658;
- *y1++ = yval>>16;
-
- yval = ptr2[1]*19595 + ptr2[2]*38470 + ptr2[3]*7471;
- uval += ptr2[3]*65536 - ptr2[1]*22117 - ptr2[2]*43419;
- vval += ptr2[1]*65536 - ptr2[2]*54878 - ptr2[3]*10658;
- *y2++ = yval>>16;
-
- yval = ptr2[5]*19595 + ptr2[6]*38470 + ptr2[7]*7471;
- uval += ptr2[7]*65536 - ptr2[5]*22117 - ptr2[6]*43419;
- vval += ptr2[5]*65536 - ptr2[6]*54878 - ptr2[7]*10658;
- *y2++ = yval>>16;
+ if(worksize<yuv_n){
+ if(worksize==0)
+ workbuffer=malloc(yuv_n);
+ else
+ workbuffer=realloc(workbuffer,yuv_n);
+ worksize=yuv_n;
+ }
+
+ {
+ unsigned char *y1=workbuffer;
+ unsigned char *y2=workbuffer+yuv_w;
+ unsigned char *u=workbuffer+yuv_w*yuv_h;
+ unsigned char *v=u+yuv_w*yuv_h/4;
+ if(image->byte_order){
+
+ for(i=0;i<yuv_h;i+=2){
+ unsigned char *ptr1=image->data+i*image->bytes_per_line;
+ unsigned char *ptr2=ptr1+image->bytes_per_line;
+ for(j=0;j<yuv_w;j+=2){
+ long yval,uval,vval;
+
+ yval = ptr1[1]*19595 + ptr1[2]*38470 + ptr1[3]*7471;
+ uval = ptr1[3]*65536 - ptr1[1]*22117 - ptr1[2]*43419;
+ vval = ptr1[1]*65536 - ptr1[2]*54878 - ptr1[3]*10658;
+ *y1++ = yval>>16;
+
+ yval = ptr1[5]*19595 + ptr1[6]*38470 + ptr1[7]*7471;
+ uval += ptr1[7]*65536 - ptr1[5]*22117 - ptr1[6]*43419;
+ vval += ptr1[5]*65536 - ptr1[6]*54878 - ptr1[7]*10658;
+ *y1++ = yval>>16;
+
+ yval = ptr2[1]*19595 + ptr2[2]*38470 + ptr2[3]*7471;
+ uval += ptr2[3]*65536 - ptr2[1]*22117 - ptr2[2]*43419;
+ vval += ptr2[1]*65536 - ptr2[2]*54878 - ptr2[3]*10658;
+ *y2++ = yval>>16;
+
+ yval = ptr2[5]*19595 + ptr2[6]*38470 + ptr2[7]*7471;
+ uval += ptr2[7]*65536 - ptr2[5]*22117 - ptr2[6]*43419;
+ vval += ptr2[5]*65536 - ptr2[6]*54878 - ptr2[7]*10658;
+ *y2++ = yval>>16;
+
+ *u++ = (uval>>19)+128;
+ *v++ = (vval>>19)+128;
+ ptr1+=8;
+ ptr2+=8;
+ }
+ y1+=yuv_w;
+ y2+=yuv_w;
- *u++ = (uval>>19)+128;
- *v++ = (vval>>19)+128;
- ptr1+=8;
- ptr2+=8;
}
- y1+=yuv_w;
- y2+=yuv_w;
-
- }
-
- }else{
-
- for(i=0;i<yuv_h;i+=2){
- unsigned char *ptr1=image->data+i*image->bytes_per_line;
- unsigned char *ptr2=ptr1+image->bytes_per_line;
- for(j=0;j<yuv_w;j+=2){
- long yval,uval,vval;
-
- yval = ptr1[2]*19595 + ptr1[1]*38470 + ptr1[0]*7471;
- uval = ptr1[0]*65536 - ptr1[2]*22117 - ptr1[1]*43419;
- vval = ptr1[2]*65536 - ptr1[1]*54878 - ptr1[0]*10658;
- *y1++ = yval>>16;
-
- yval = ptr1[6]*19595 + ptr1[5]*38470 + ptr1[4]*7471;
- uval += ptr1[4]*65536 - ptr1[6]*22117 - ptr1[5]*43419;
- vval += ptr1[6]*65536 - ptr1[5]*54878 - ptr1[4]*10658;
- *y1++ = yval>>16;
-
- yval = ptr2[2]*19595 + ptr2[1]*38470 + ptr2[0]*7471;
- uval += ptr2[0]*65536 - ptr2[2]*22117 - ptr2[1]*43419;
- vval += ptr2[2]*65536 - ptr2[1]*54878 - ptr2[0]*10658;
- *y2++ = yval>>16;
-
- yval = ptr2[6]*19595 + ptr2[5]*38470 + ptr2[4]*7471;
- uval += ptr2[4]*65536 - ptr2[6]*22117 - ptr2[5]*43419;
- vval += ptr2[6]*65536 - ptr2[5]*54878 - ptr2[4]*10658;
- *y2++ = yval>>16;
+
+ }else{
+
+ for(i=0;i<yuv_h;i+=2){
+ unsigned char *ptr1=image->data+i*image->bytes_per_line;
+ unsigned char *ptr2=ptr1+image->bytes_per_line;
+ for(j=0;j<yuv_w;j+=2){
+ long yval,uval,vval;
+
+ yval = ptr1[2]*19595 + ptr1[1]*38470 + ptr1[0]*7471;
+ uval = ptr1[0]*65536 - ptr1[2]*22117 - ptr1[1]*43419;
+ vval = ptr1[2]*65536 - ptr1[1]*54878 - ptr1[0]*10658;
+ *y1++ = yval>>16;
+
+ yval = ptr1[6]*19595 + ptr1[5]*38470 + ptr1[4]*7471;
+ uval += ptr1[4]*65536 - ptr1[6]*22117 - ptr1[5]*43419;
+ vval += ptr1[6]*65536 - ptr1[5]*54878 - ptr1[4]*10658;
+ *y1++ = yval>>16;
+
+ yval = ptr2[2]*19595 + ptr2[1]*38470 + ptr2[0]*7471;
+ uval += ptr2[0]*65536 - ptr2[2]*22117 - ptr2[1]*43419;
+ vval += ptr2[2]*65536 - ptr2[1]*54878 - ptr2[0]*10658;
+ *y2++ = yval>>16;
+
+ yval = ptr2[6]*19595 + ptr2[5]*38470 + ptr2[4]*7471;
+ uval += ptr2[4]*65536 - ptr2[6]*22117 - ptr2[5]*43419;
+ vval += ptr2[6]*65536 - ptr2[5]*54878 - ptr2[4]*10658;
+ *y2++ = yval>>16;
+
+ *u++ = (uval>>19)+128;
+ *v++ = (vval>>19)+128;
+ ptr1+=8;
+ ptr2+=8;
+ }
+ y1+=yuv_w;
+ y2+=yuv_w;
- *u++ = (uval>>19)+128;
- *v++ = (vval>>19)+128;
- ptr1+=8;
- ptr2+=8;
}
- y1+=yuv_w;
- y2+=yuv_w;
-
}
}
+ pthread_mutex_lock(&output_mutex);
+ gwrite(outfile_fd,cbuf,len);
+ gwrite(outfile_fd,workbuffer,yuv_n);
}
- pthread_mutex_lock(&output_mutex);
- gwrite(outfile_fd,cbuf,len);
- gwrite(outfile_fd,workbuffer,yuv_n);
+ pthread_mutex_unlock(&output_mutex);
+ }else{
+ fprintf(stderr,"Dupe!\n");
}
- pthread_mutex_unlock(&output_mutex);
}
<p><p><p>--- >8 ----
List archives: http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'cvs-request at xiph.org'
containing only the word 'unsubscribe' in the body. No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.
More information about the commits
mailing list