blob: 57262023840d09b691b8cbabd97b9189f105ab07 [file] [log] [blame]
/*
* Copyright (c) 2013, The Linux Foundation. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "qd_utils.h"
#define QD_UTILS_DEBUG 0
namespace qdutils {
int getHDMINode(void)
{
FILE *displayDeviceFP = NULL;
char fbType[MAX_FRAME_BUFFER_NAME_SIZE];
char msmFbTypePath[MAX_FRAME_BUFFER_NAME_SIZE];
int j = 0;
for(j = 0; j < HWC_NUM_DISPLAY_TYPES; j++) {
snprintf (msmFbTypePath, sizeof(msmFbTypePath),
"/sys/class/graphics/fb%d/msm_fb_type", j);
displayDeviceFP = fopen(msmFbTypePath, "r");
if(displayDeviceFP) {
fread(fbType, sizeof(char), MAX_FRAME_BUFFER_NAME_SIZE,
displayDeviceFP);
if(strncmp(fbType, "dtv panel", strlen("dtv panel")) == 0) {
ALOGD("%s: HDMI is at fb%d", __func__, j);
fclose(displayDeviceFP);
break;
}
fclose(displayDeviceFP);
} else {
ALOGE("%s: Failed to open fb node %d", __func__, j);
}
}
if (j < HWC_NUM_DISPLAY_TYPES)
return j;
else
ALOGE("%s: Failed to find HDMI node", __func__);
return -1;
}
int getEdidRawData(char *buffer)
{
int size;
int edidFile;
char msmFbTypePath[MAX_FRAME_BUFFER_NAME_SIZE];
int node_id = getHDMINode();
if (node_id < 0) {
ALOGE("%s no HDMI node found", __func__);
return 0;
}
snprintf(msmFbTypePath, sizeof(msmFbTypePath),
"/sys/class/graphics/fb%d/edid_raw_data", node_id);
edidFile = open(msmFbTypePath, O_RDONLY, 0);
if (edidFile < 0) {
ALOGE("%s no edid raw data found", __func__);
return 0;
}
size = (int)read(edidFile, (char*)buffer, EDID_RAW_DATA_SIZE);
close(edidFile);
return size;
}
/* Calculates the aspect ratio for based on src & dest */
void getAspectRatioPosition(int destWidth, int destHeight, int srcWidth,
int srcHeight, hwc_rect_t& rect) {
int x =0, y =0;
if (srcWidth * destHeight > destWidth * srcHeight) {
srcHeight = destWidth * srcHeight / srcWidth;
srcWidth = destWidth;
} else if (srcWidth * destHeight < destWidth * srcHeight) {
srcWidth = destHeight * srcWidth / srcHeight;
srcHeight = destHeight;
} else {
srcWidth = destWidth;
srcHeight = destHeight;
}
if (srcWidth > destWidth) srcWidth = destWidth;
if (srcHeight > destHeight) srcHeight = destHeight;
x = (destWidth - srcWidth) / 2;
y = (destHeight - srcHeight) / 2;
ALOGD_IF(QD_UTILS_DEBUG, "%s: AS Position: x = %d, y = %d w = %d h = %d",
__FUNCTION__, x, y, srcWidth , srcHeight);
// Convert it back to hwc_rect_t
rect.left = x;
rect.top = y;
rect.right = srcWidth + rect.left;
rect.bottom = srcHeight + rect.top;
}
}; //namespace qdutils