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cec.c
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cec.c
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/*
* CEC code taken from Showtime:
*
*
* Showtime mediacenter
* Copyright (C) 2007-2012 Andreas Öman
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <pthread.h>
#include <bcm_host.h>
#include <IL/OMX_Core.h>
#include <interface/vmcs_host/vc_cecservice.h>
#include <interface/vchiq_arm/vchiq_if.h>
#include "cec.h"
int display_status = 0;
#define DISPLAY_STATUS_OFF 0
#define DISPLAY_STATUS_ON 1
#define DISPLAY_STATUS_ON_NOT_VISIBLE 2
#if 0
/* TODO: Figure this one out */
case CEC_USER_CONTROL_CODE_AN_CHANNELS_LIST:
msgqueue_add(msgqueue,'c'); break;
#endif
const static int btn_to_action[256] = {
[CEC_User_Control_Select] = 'i',
[CEC_User_Control_DisplayInformation] = 'i',
[CEC_User_Control_Left] = 'l',
[CEC_User_Control_Up] = 'u',
[CEC_User_Control_Right] = 'r',
[CEC_User_Control_Down] = 'd',
[CEC_User_Control_ChannelUp] = 'n',
[CEC_User_Control_ChannelDown] = 'p',
[CEC_User_Control_SoundSelect] = 'a',
[CEC_User_Control_Pause] = ' ',
[CEC_User_Control_F2Red] = ' ',
[CEC_User_Control_Rewind] = 'l',
[CEC_User_Control_FastForward] = 'r',
[CEC_User_Control_Number0] = '0',
[CEC_User_Control_Number1] = '1',
[CEC_User_Control_Number2] = '2',
[CEC_User_Control_Number3] = '3',
[CEC_User_Control_Number4] = '4',
[CEC_User_Control_Number5] = '5',
[CEC_User_Control_Number6] = '6',
[CEC_User_Control_Number7] = '7',
[CEC_User_Control_Number8] = '8',
[CEC_User_Control_Number9] = '9',
};
const uint32_t myVendorId = CEC_VENDOR_ID_BROADCOM;
uint16_t physical_address;
CEC_AllDevices_T logical_address;
static void
SetStreamPath(const VC_CEC_MESSAGE_T *msg)
{
uint16_t requestedAddress;
requestedAddress = (msg->payload[1] << 8) + msg->payload[2];
if (requestedAddress != physical_address)
return;
vc_cec_send_ActiveSource(physical_address, VC_FALSE);
}
static void
give_device_power_status(const VC_CEC_MESSAGE_T *msg)
{
// Send CEC_Opcode_ReportPowerStatus
uint8_t response[2];
response[0] = CEC_Opcode_ReportPowerStatus;
response[1] = CEC_POWER_STATUS_ON;
vc_cec_send_message(msg->initiator, response, 2, VC_TRUE);
}
static void
give_device_vendor_id(const VC_CEC_MESSAGE_T *msg)
{
uint8_t response[4];
response[0] = CEC_Opcode_DeviceVendorID;
response[1] = (uint8_t) ((myVendorId >> 16) & 0xff);
response[2] = (uint8_t) ((myVendorId >> 8) & 0xff);
response[3] = (uint8_t) ((myVendorId >> 0) & 0xff);
vc_cec_send_message(msg->initiator, response, 4, VC_TRUE);
}
static void
send_cec_version(const VC_CEC_MESSAGE_T *msg)
{
uint8_t response[2];
response[0] = CEC_Opcode_CECVersion;
response[1] = 0x5;
vc_cec_send_message(msg->initiator, response, 2, VC_TRUE);
}
static void
vc_cec_report_physicalAddress(uint8_t dest)
{
uint8_t msg[4];
msg[0] = CEC_Opcode_ReportPhysicalAddress;
msg[1] = (uint8_t) ((physical_address) >> 8 & 0xff);
msg[2] = (uint8_t) ((physical_address) >> 0 & 0xff);
msg[3] = CEC_DeviceType_Tuner;
vc_cec_send_message(CEC_BROADCAST_ADDR, msg, 4, VC_TRUE);
}
static void
send_deck_status(const VC_CEC_MESSAGE_T *msg)
{
uint8_t response[2];
response[0] = CEC_Opcode_DeckStatus;
response[1] = CEC_DECK_INFO_NO_MEDIA;
vc_cec_send_message(msg->initiator, response, 2, VC_TRUE);
}
static void
send_osd_name(const VC_CEC_MESSAGE_T *msg, const char *name)
{
uint8_t response[15];
int l = strlen(name);
if (l > 14) l = 14;
response[0] = CEC_Opcode_SetOSDName;
memcpy(response + 1, name, l);
vc_cec_send_message(msg->initiator, response, l+1, VC_TRUE);
}
static void
cec_callback(void *callback_data, uint32_t param0, uint32_t param1,
uint32_t param2, uint32_t param3, uint32_t param4)
{
VC_CEC_NOTIFY_T reason = (VC_CEC_NOTIFY_T) CEC_CB_REASON(param0);
struct msgqueue_t *msgqueue = callback_data;
#if 0
uint32_t len = CEC_CB_MSG_LENGTH(param0);
uint32_t retval = CEC_CB_RC(param0);
printf("cec_callback: debug: "
"reason=0x%04x, len=0x%02x, retval=0x%02x, "
"param1=0x%08x, param2=0x%08x, param3=0x%08x, param4=0x%08x\n",
reason, len, retval, param1, param2, param3, param4);
#endif
VC_CEC_MESSAGE_T msg;
CEC_OPCODE_T opcode;
if(vc_cec_param2message(param0, param1, param2, param3, param4, &msg))
return;
switch(reason) {
default:
break;
case VC_CEC_BUTTON_PRESSED:
fprintf(stderr,"[CEC] - 0x%02x button pressed\n",msg.payload[1]);
msgqueue_add(msgqueue,btn_to_action[msg.payload[1]]);
break;
case VC_CEC_RX:
opcode = CEC_CB_OPCODE(param1);
#if 1
printf("opcode = %x (from:0x%x to:0x%x)\n", opcode,
CEC_CB_INITIATOR(param1), CEC_CB_FOLLOWER(param1));
#endif
switch(opcode) {
case CEC_Opcode_GiveDevicePowerStatus:
give_device_power_status(&msg);
break;
case CEC_Opcode_GiveDeviceVendorID:
give_device_vendor_id(&msg);
break;
case CEC_Opcode_SetStreamPath:
SetStreamPath(&msg);
break;
case CEC_Opcode_GivePhysicalAddress:
vc_cec_report_physicalAddress(msg.initiator);
break;
case CEC_Opcode_GiveOSDName:
send_osd_name(&msg, "pidvbip");
break;
case CEC_Opcode_GetCECVersion:
send_cec_version(&msg);
break;
case CEC_Opcode_GiveDeckStatus:
send_deck_status(&msg);
break;
default:
// printf("\nDon't know how to handle status code 0x%x\n\n", opcode);
vc_cec_send_FeatureAbort(msg.initiator, opcode,
CEC_Abort_Reason_Unrecognised_Opcode);
break;
}
break;
}
}
/**
*
*/
static void
tv_service_callback(void *callback_data, uint32_t reason,
uint32_t param1, uint32_t param2)
{
struct msgqueue_t *msgqueue = callback_data;
fprintf(stderr,"[CEC] tv_service_callback - reason=0x%08x\n",reason);
if(reason & 1) {
display_status = DISPLAY_STATUS_OFF;
} else {
display_status = DISPLAY_STATUS_ON;
}
}
/**
* We deal with CEC and HDMI events, etc here
*/
static void *
cec_thread(void *aux)
{
TV_DISPLAY_STATE_T state;
struct msgqueue_t *msgqueue = aux;
vc_tv_register_callback(tv_service_callback, msgqueue);
vc_tv_get_display_state(&state);
vc_cec_set_passive(1);
vc_cec_register_callback(((CECSERVICE_CALLBACK_T) cec_callback), msgqueue);
vc_cec_register_all();
restart:
while(1) {
if(!vc_cec_get_physical_address(&physical_address) &&
physical_address == 0xffff) {
} else {
fprintf(stderr,"[CEC]: Got physical address 0x%04x\n", physical_address);
break;
}
sleep(1);
}
const int addresses =
(1 << CEC_AllDevices_eRec1) |
(1 << CEC_AllDevices_eRec2) |
(1 << CEC_AllDevices_eRec3) |
(1 << CEC_AllDevices_eFreeUse);
for(logical_address = 0; logical_address < 15; logical_address++) {
if(((1 << logical_address) & addresses) == 0)
continue;
if(vc_cec_poll_address(CEC_AllDevices_eRec1) > 0)
break;
}
if(logical_address == 15) {
printf("Unable to find a free logical address, retrying\n");
sleep(1);
goto restart;
}
vc_cec_set_logical_address(logical_address, CEC_DeviceType_Rec, myVendorId);
while(1) {
sleep(1);
}
vc_cec_set_logical_address(0xd, CEC_DeviceType_Rec, myVendorId);
return NULL;
}
int cec_init(struct msgqueue_t* msgqueue)
{
static pthread_t thread;
pthread_create(&thread,NULL,(void * (*)(void *))cec_thread,msgqueue);
}
int cec_done(int poweroff)
{
/* TODO */
#if 0
if (poweroff) {
/* Power-off the TV */
cec_standby_devices(CEC_DEFAULT_BASE_DEVICE);
}
/* Cleanup */
cec_destroy();
#endif
return 0;
}