You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
123 lines
4.3 KiB
123 lines
4.3 KiB
/* |
|
* 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 MAX_FRAME_BUFFER_NAME_SIZE (80) |
|
#define QD_UTILS_DEBUG 0 |
|
|
|
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; |
|
} |
|
|
|
|