IPTV源代码工程

#include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> #include <stdlib.h> #include <errno.h> #include <linux/videodev.h> #include <linux/fb.h> #include <linux/i2c-algo-faraday.h> #include "xc3028_control.h" #include "xc3028_channelmaps.h" #include "xc3028_scodes.h" #include "xc3028_firmwares.h" #define XCEIVE_XC3028_SUBADDR_FREQ_ERROR 0x0001 #define XCEIVE_XC3028_SUBADDR_LOCK 0x0002 #define XCEIVE_XC3028_SUBADDR_VERSION 0x0004 #define XCEIVE_XC3028_SUBADDR_PRODUCT_ID 0x0008 #define XCEIVE_XC3028_SUBADDR_HSYNC_FREQ 0x0010 #define XCEIVE_XC3028_SUBADDR_FRAME_LINES 0x0020 #define XCEIVE_XC3028_SUBADDR_QUALITY 0x0040 #define XCEIVE_XC3028_SUBADDR_ADC_ENVELOPE 0x0100 #define TUNER_ID_WRITE 0xc2 #define TUNER_ID_READ 0xc3 int tv_fd=-1; int gpid =-1; /* *************************************************************** */ /* GLOBAL VARIABLES */ /* *************************************************************** */ XC3028_TV_MODE XC3028_current_tv_mode = {0,0,0}; XC3028_CHANNEL_MAP *XC3028_current_channel_map_ptr = 0; XC3028_CHANNEL XC3028_current_channel = {{' ',' ',' ',' '}, 0, 0}; //static int area_addr = &XC3028_channel_map_taiwan_analog_cable; static int mode_addr = &XC3028_tv_mode_m_n_ntsc_pal_mts_lcd_nogd; static int channel_init = 1,freq_offset = 0; struct i2c_faraday_msg i2c_ap ; int xc3028_send_i2c_data(unsigned char *bytes_to_send, int nb_bytes_to_send); int xc3028_read_i2c_data(unsigned char *bytes_received, int nb_bytes_to_receive); int xc3028_reset(); int xc3028_wait(int wait_ms); #define TV_Reset 1 #define TV_IR 2 /* *************************************************************** */ /* *************************************************************** */ /* */ /* CODE PROVIDED BY XCEIVE */ /* */ /* *************************************************************** */ /* *************************************************************** */ int xc3028_load_i2c_sequence(XC3028_I2C_SEQUENCE i2c_sequence) { int i,nbytes_to_send,pos,result; unsigned int length, index; unsigned char buf[XC3028_MAX_I2C_WRITE_LENGTH]; index=0; while ((i2c_sequence.sequence[index]!=0xFF) || (i2c_sequence.sequence[index+1]!=0xFF)) { length = i2c_sequence.sequence[index]*256 + i2c_sequence.sequence[index+1]; if (length==0x0000) { //this is in fact a RESET command result = xc3028_reset(); index+=2; if (result!=XC3028_RESULT_SUCCESS) return result; } else if (length & 0x8000) { //this is in fact a WAIT command result = xc3028_wait(length & 0x7FFF); index+=2; if (result!=XC3028_RESULT_SUCCESS) return result; } else { //send i2c data whilst ensuring individual transactions do //not exceed XC3028_MAX_I2C_WRITE_LENGTH bytes index+=2; buf[0] = i2c_sequence.sequence[index]; pos = 1; while (pos < length) { if ( (length-pos) > XC3028_MAX_I2C_WRITE_LENGTH-1) { nbytes_to_send = XC3028_MAX_I2C_WRITE_LENGTH; } else { nbytes_to_send = (length-pos+1); } for (i=1;i<nbytes_to_send;i++) { buf[i] = i2c_sequence.sequence[index+pos+i-1]; } result = xc3028_send_i2c_data(buf, nbytes_to_send); if (result!=XC3028_RESULT_SUCCESS) return result; pos += nbytes_to_send-1; } index+=length; } } return XC3028_RESULT_SUCCESS; } int xc3028_get_reg(unsigned short int subaddr, unsigned short int *data) { unsigned char buf[2]; int result; printf("xc3028_get_reg\n"); buf[0]=(subaddr>>8) & 0xFF; buf[1]=subaddr & 0xFF; result = xc3028_send_i2c_data(buf, 2); if (result!=XC3028_RESULT_SUCCESS) return result; result = xc3028_read_i2c_data(buf, 2); if (result!=XC3028_RESULT_SUCCESS) return result; (*data) = buf[0]; (*data) = ((*data) << 8) + buf[1]; return XC3028_RESULT_SUCCESS; } int xc3028_initialize(XC3028_TV_MODE* new_tv_mode_ptr, XC3028_CHANNEL_MAP* new_channel_map_ptr) { int result; int base_firmware_changed = (new_tv_mode_ptr->base_firmware_ptr != XC3028_current_tv_mode.base_firmware_ptr); int std_firmware_changed = (new_tv_mode_ptr->std_firmware_ptr != XC3028_current_tv_mode.std_firmware_ptr); // if base firmware has changed, then do hardware reset and reload base // firmware file if (base_firmware_changed) { result = xc3028_reset(); if (result!=XC3028_RESULT_SUCCESS) return result; printf("load base firmware...\n"); result = xc3028_load_i2c_sequence(*(new_tv_mode_ptr->base_firmware_ptr)); if (result!=XC3028_RESULT_SUCCESS) return result; } // if base firmware has changed -or- standard-specific firmware has // changed then reload standard-specific firmware file if (base_firmware_changed || std_firmware_changed) { printf("load std firmware...\n"); result = xc3028_load_i2c_sequence(*(new_tv_mode_ptr->std_firmware_ptr)); if (result!=XC3028_RESULT_SUCCESS) { printf("load std firmware fail\n"); return result; } } XC3028_current_tv_mode = *new_tv_mode_ptr; XC3028_current_channel_map_ptr = new_channel_map_ptr; // if base firmware has changed -or- standard-specific firmware has // changed then re-write RF channel //justin /* if (base_firmware_changed || std_firmware_changed) { //do not return error if channel is incorrect... xc3028_set_channel(XC3028_current_channel); } */ return XC3028_RESULT_SUCCESS; } int xc3028_shutdown() { //unsigned char buf[4] = {0x00, 0x08, 0x00, 0x00}; unsigned char buf[4] = {0x80, 0x08, 0x00, 0x00}; //modified for firmware v2.2 printf("xc3028_shutdown\n"); xc3028_send_i2c_data(buf, 4); //no ack check //reset current firmware pointers to force firmware reload //during subsequent call to xc3028_initialize() XC3028_current_tv_mode.base_firmware_ptr=0; XC3028_current_tv_mode.std_firmware_ptr=0; return 0; } /* int xc3028_set_frequency(double frequency_in_mhz) { unsigned int frequency_code; int result; XC3028_CHANNEL new_channel; if (XC3028_current_channel_map_ptr == 0) return XC3028_RESULT_NO_CHANNELMAP_SPECIFIED; if ((frequency_in_mhz>1023) || (frequency_in_mhz<1)) return XC3028_RESULT_OUT_OF_RANGE; //frequency_code = (unsigned int)floor(frequency_in_mhz/0.015625);justin new_channel.frequency = frequency_code; new_channel.dcode = 0xFF; return xc3028_set_channel(new_channel); } */ int xc3028_send_scode(unsigned char dcode) { unsigned char buf[4]; int result; //buf[0] = 0x20; buf[0] = 0xA0; // modified for firmware v2.2 buf[1] = 0x00; buf[2] = 0x00; buf[3] = 0x00; if (XC3028_current_tv_mode.scode_table_ptr==0) { return XC3028_RESULT_SUCCESS; } result = xc3028_send_i2c_data(buf, 4); if (result!=XC3028_RESULT_SUCCESS) return result; result = xc3028_send_i2c_data((*(XC3028_current_tv_mode.scode_table_ptr))[dcode], 12); if (result!=XC3028_RESULT_SUCCESS) return result; buf[0] = 0x00; buf[1] = 0x8C; result = xc3028_send_i2c_data(buf, 2); if (result!=XC3028_RESULT_SUCCESS) return result; return XC3028_RESULT_SUCCESS; } int xc3028_set_channel(XC3028_CHANNEL new_channel) { int i,result; unsigned int frequency;