static int
zr36050_set_sof (struct zr36050 *ptr)
{
char sof_data[34]; // max. size of register set
int i;
dprintk(3, "%s: write SOF (%dx%d, %d components)\n", ptr->name,
ptr->width, ptr->height, NO_OF_COMPONENTS);
sof_data[0] = 0xff;
sof_data[1] = 0xc0;
sof_data[2] = 0x00;
sof_data[3] = (3 * NO_OF_COMPONENTS) + 8;
sof_data[4] = BASELINE_PRECISION; // only '8' possible with zr36050
sof_data[5] = (ptr->height) >> 8;
sof_data[6] = (ptr->height) & 0xff;
sof_data[7] = (ptr->width) >> 8;
sof_data[8] = (ptr->width) & 0xff;
sof_data[9] = NO_OF_COMPONENTS;
for (i = 0; i < NO_OF_COMPONENTS; i++) {
sof_data[10 + (i * 3)] = i; // index identifier
sof_data[11 + (i * 3)] = (ptr->h_samp_ratio[i] << 4) | (ptr->v_samp_ratio[i]); // sampling ratios
sof_data[12 + (i * 3)] = zr36050_tq[i]; // Q table selection
}
return zr36050_pushit(ptr, ZR050_SOF_IDX,
(3 * NO_OF_COMPONENTS) + 10, sof_data);
}
static int
zr36050_set_dri (struct zr36050 *ptr)
{
char dri_data[6]; // max. size of register set
dprintk(3, "%s: write DRI\n", ptr->name);
dri_data[0] = 0xff;
dri_data[1] = 0xdd;
dri_data[2] = 0x00;
dri_data[3] = 0x04;
dri_data[4] = ptr->dri >> 8;
dri_data[5] = ptr->dri & 0xff;
return zr36050_pushit(ptr, ZR050_DRI_IDX, 6, dri_data);
}
static int
zr36050_set_sos (struct zr36050 *ptr)
{
char sos_data[16]; // max. size of register set
int i;
dprintk(3, "%s: write SOS\n", ptr->name);
sos_data[0] = 0xff;
sos_data[1] = 0xda;
sos_data[2] = 0x00;
sos_data[3] = 2 + 1 + (2 * NO_OF_COMPONENTS) + 3;
sos_data[4] = NO_OF_COMPONENTS;
for (i = 0; i < NO_OF_COMPONENTS; i++) {
sos_data[5 + (i * 2)] = i; // index
sos_data[6 + (i * 2)] = (zr36050_td[i] << 4) | zr36050_ta[i]; // AC/DC tbl.sel.
}
sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 2] = 00; // scan start
sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 3] = 0x3F;
sos_data[2 + 1 + (2 * NO_OF_COMPONENTS) + 4] = 00;
return zr36050_pushit(ptr, ZR050_SOS1_IDX,
4 + 1 + (2 * NO_OF_COMPONENTS) + 3,
sos_data);
}
/* =========================================================================
Setup function:
Setup compression/decompression of Zoran's JPEG processor
( see also zoran 36050 manual )
... sorry for the spaghetti code ...
========================================================================= */
static void
zr36050_init (struct zr36050 *ptr)
{
int sum = 0;
long bitcnt, tmp;
if (ptr->mode == CODEC_DO_COMPRESSION) {
dprintk(2, "%s: COMPRESSION SETUP\n", ptr->name);
/* 050 communicates with 057 in master mode */
zr36050_write(ptr, ZR050_HARDWARE, ZR050_HW_MSTR);
/* encoding table preload for compression */
zr36050_write(ptr, ZR050_MODE,
ZR050_MO_COMP | ZR050_MO_TLM);
zr36050_write(ptr, ZR050_OPTIONS, 0);
/* disable all IRQs */
zr36050_write(ptr, ZR050_INT_REQ_0, 0);
zr36050_write(ptr, ZR050_INT_REQ_1, 3); // low 2 bits always 1
/* volume control settings */
/*zr36050_write(ptr, ZR050_MBCV, ptr->max_block_vol);*/
zr36050_write(ptr, ZR050_SF_HI, ptr->scalefact >> 8);
zr36050_write(ptr, ZR050_SF_LO, ptr->scalefact & 0xff);
zr36050_write(ptr, ZR050_AF_HI, 0xff);
zr36050_write(ptr, ZR050_AF_M, 0xff);
zr36050_write(ptr, ZR050_AF_LO, 0xff);
/* setup the variable jpeg tables */
sum += zr36050_set_sof(ptr);
sum += zr36050_set_sos(ptr);
sum += zr36050_set_dri(ptr);
/* setup the fixed jpeg tables - maybe variable, though -
* (see table init section above) */
dprintk(3, "%s: write DQT, DHT, APP\n", ptr->name);
sum += zr36050_pushit(ptr, ZR050_DQT_IDX,
sizeof(zr36050_dqt), zr36050_dqt);
sum += zr36050_pushit(ptr, ZR050_DHT_IDX,
sizeof(zr36050_dht), zr36050_dht);
zr36050_write(ptr, ZR050_APP_IDX, 0xff);
zr36050_write(ptr, ZR050_APP_IDX + 1, 0xe0 + ptr->app.appn);
zr36050_write(ptr, ZR050_APP_IDX + 2, 0x00);
zr36050_write(ptr, ZR050_APP_IDX + 3, ptr->app.len + 2);
sum += zr36050_pushit(ptr, ZR050_APP_IDX + 4, 60,
ptr->app.data) + 4;
zr36050_write(ptr, ZR050_COM_IDX, 0xff);
zr36050_write(ptr, ZR050_COM_IDX + 1, 0xfe);
zr36050_write(ptr, ZR050_COM_IDX + 2, 0x00);
zr36050_write(ptr, ZR050_COM_IDX + 3, ptr->com.len + 2);
sum += zr36050_pushit(ptr, ZR050_COM_IDX + 4, 60,
ptr->com.data) + 4;
/* do the internal huffman table preload */
zr36050_write(ptr, ZR050_MARKERS_EN, ZR050_ME_DHTI);
zr36050_write(ptr, ZR050_GO, 1); // launch codec
zr36050_wait_end(ptr);
dprintk(2, "%s: Status after table preload: 0x%02x\n",
ptr->name, ptr->status1);
if ((ptr->status1 & 0x4) == 0) {
dprintk(1, KERN_ERR "%s: init aborted!\n",
ptr->name);
return; // something is wrong, its timed out!!!!
}
/* setup misc. data for compression (target code sizes) */
/* size of compressed code to reach without header data */
sum = ptr->real_code_vol - sum;
bitcnt = sum << 3; /* need the size in bits */
tmp = bitcnt >> 16;
dprintk(3,
"%s: code: csize=%d, tot=%d, bit=%ld, highbits=%ld\n",
ptr->name, sum, ptr->real_code_vol, bitcnt, tmp);
zr36050_write(ptr, ZR050_TCV_NET_HI, tmp >> 8);
zr36050_write(ptr, ZR050_TCV_NET_MH, tmp & 0xff);
tmp = bitcnt & 0xffff;
zr36050_write(ptr, ZR050_TCV_NET_ML, tmp >> 8);
zr36050_write(ptr, ZR050_TCV_NET_LO, tmp & 0xff);
bitcnt -= bitcnt >> 7; // bits without stuffing
bitcnt -= ((bitcnt * 5) >> 6); // bits without eob
tmp = bitcnt >> 16;
dprintk(3, "%s: code: nettobit=%ld, highnettobits=%ld\n",
ptr->name, bitcnt, tmp);
zr36050_write(ptr, ZR050_TCV_DATA_HI, tmp >> 8);
zr36050_write(ptr, ZR050_TCV_DATA_MH, tmp & 0xff);
tmp = bitcnt & 0xffff;
zr36050_write(ptr, ZR050_TCV_DATA_ML, tmp >> 8);
zr36050_write(ptr, ZR050_TCV_DATA_LO, tmp & 0xff);
/* compression setup with or without bitrate control */
zr36050_write(ptr, ZR050_MODE,
ZR050_MO_COMP | ZR050_MO_PASS2 |
(ptr->bitrate_ctrl ? ZR050_MO_BRC : 0));
/* this headers seem to deliver "valid AVI" jpeg frames */
zr36050_write(ptr, ZR050_MARKERS_EN,
ZR050_ME_DQT | ZR050_ME_DHT |
((ptr->app.len > 0) ? ZR050_ME_APP : 0) |
((ptr->com.len > 0) ? ZR050_ME_COM : 0));
} else {
static void
zr36050_init (struct zr36050 *ptr)
{
int sum = 0;
long bitcnt, tmp;
if (ptr->mode == CODEC_DO_COMPRESSION) {
dprintk(2, "%s: COMPRESSION SETUP\n", ptr->name);
/* */
zr36050_write(ptr, ZR050_HARDWARE, ZR050_HW_MSTR);
/* */
zr36050_write(ptr, ZR050_MODE,
ZR050_MO_COMP | ZR050_MO_TLM);
zr36050_write(ptr, ZR050_OPTIONS, 0);
/* */
zr36050_write(ptr, ZR050_INT_REQ_0, 0);
zr36050_write(ptr, ZR050_INT_REQ_1, 3); //
/* */
/* */
zr36050_write(ptr, ZR050_SF_HI, ptr->scalefact >> 8);
zr36050_write(ptr, ZR050_SF_LO, ptr->scalefact & 0xff);
zr36050_write(ptr, ZR050_AF_HI, 0xff);
zr36050_write(ptr, ZR050_AF_M, 0xff);
zr36050_write(ptr, ZR050_AF_LO, 0xff);
/* */
sum += zr36050_set_sof(ptr);
sum += zr36050_set_sos(ptr);
sum += zr36050_set_dri(ptr);
/*
*/
dprintk(3, "%s: write DQT, DHT, APP\n", ptr->name);
sum += zr36050_pushit(ptr, ZR050_DQT_IDX,
sizeof(zr36050_dqt), zr36050_dqt);
sum += zr36050_pushit(ptr, ZR050_DHT_IDX,
sizeof(zr36050_dht), zr36050_dht);
zr36050_write(ptr, ZR050_APP_IDX, 0xff);
zr36050_write(ptr, ZR050_APP_IDX + 1, 0xe0 + ptr->app.appn);
zr36050_write(ptr, ZR050_APP_IDX + 2, 0x00);
zr36050_write(ptr, ZR050_APP_IDX + 3, ptr->app.len + 2);
sum += zr36050_pushit(ptr, ZR050_APP_IDX + 4, 60,
ptr->app.data) + 4;
zr36050_write(ptr, ZR050_COM_IDX, 0xff);
zr36050_write(ptr, ZR050_COM_IDX + 1, 0xfe);
zr36050_write(ptr, ZR050_COM_IDX + 2, 0x00);
zr36050_write(ptr, ZR050_COM_IDX + 3, ptr->com.len + 2);
sum += zr36050_pushit(ptr, ZR050_COM_IDX + 4, 60,
ptr->com.data) + 4;
/* */
zr36050_write(ptr, ZR050_MARKERS_EN, ZR050_ME_DHTI);
zr36050_write(ptr, ZR050_GO, 1); //
zr36050_wait_end(ptr);
dprintk(2, "%s: Status after table preload: 0x%02x\n",
ptr->name, ptr->status1);
if ((ptr->status1 & 0x4) == 0) {
dprintk(1, KERN_ERR "%s: init aborted!\n",
ptr->name);
return; //
}
/* */
/* */
sum = ptr->real_code_vol - sum;
bitcnt = sum << 3; /* */
tmp = bitcnt >> 16;
dprintk(3,
"%s: code: csize=%d, tot=%d, bit=%ld, highbits=%ld\n",
ptr->name, sum, ptr->real_code_vol, bitcnt, tmp);
zr36050_write(ptr, ZR050_TCV_NET_HI, tmp >> 8);
zr36050_write(ptr, ZR050_TCV_NET_MH, tmp & 0xff);
tmp = bitcnt & 0xffff;
zr36050_write(ptr, ZR050_TCV_NET_ML, tmp >> 8);
zr36050_write(ptr, ZR050_TCV_NET_LO, tmp & 0xff);
bitcnt -= bitcnt >> 7; //
bitcnt -= ((bitcnt * 5) >> 6); //
tmp = bitcnt >> 16;
dprintk(3, "%s: code: nettobit=%ld, highnettobits=%ld\n",
ptr->name, bitcnt, tmp);
zr36050_write(ptr, ZR050_TCV_DATA_HI, tmp >> 8);
zr36050_write(ptr, ZR050_TCV_DATA_MH, tmp & 0xff);
tmp = bitcnt & 0xffff;
zr36050_write(ptr, ZR050_TCV_DATA_ML, tmp >> 8);
zr36050_write(ptr, ZR050_TCV_DATA_LO, tmp & 0xff);
/* */
zr36050_write(ptr, ZR050_MODE,
ZR050_MO_COMP | ZR050_MO_PASS2 |
(ptr->bitrate_ctrl ? ZR050_MO_BRC : 0));
/* */
zr36050_write(ptr, ZR050_MARKERS_EN,
ZR050_ME_DQT | ZR050_ME_DHT |
((ptr->app.len > 0) ? ZR050_ME_APP : 0) |
((ptr->com.len > 0) ? ZR050_ME_COM : 0));
} else {