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hardware_samsung/exynos3/s5pc110/libs3cjpeg/JpegEncoder.cpp

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/*
* Copyright Samsung Electronics Co.,LTD.
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* JPEG DRIVER MODULE (JpegEncoder.cpp)
* Author : ge.lee -- initial version
* Date : 03 June 2010
* Purpose : This file implements the JPEG encoder APIs as needed by Camera HAL
*/
#define LOG_TAG "JpegEncoder"
#define MAIN_DUMP 0
#define THUMB_DUMP 0
#include <utils/Log.h>
#include <sys/mman.h>
#include <fcntl.h>
#include "JpegEncoder.h"
static const char ExifAsciiPrefix[] = { 0x41, 0x53, 0x43, 0x49, 0x49, 0x0, 0x0, 0x0 };
namespace android {
JpegEncoder::JpegEncoder() : available(false)
{
mArgs.mmapped_addr = (char *)MAP_FAILED;
mArgs.enc_param = NULL;
mArgs.thumb_enc_param = NULL;
mDevFd = open(JPG_DRIVER_NAME, O_RDWR);
if (mDevFd < 0) {
ALOGE("Failed to open the device");
return;
}
mArgs.mmapped_addr = (char *)mmap(0,
JPG_TOTAL_BUF_SIZE,
PROT_READ | PROT_WRITE,
MAP_SHARED,
mDevFd,
0);
if (mArgs.mmapped_addr == MAP_FAILED) {
ALOGE("Failed to mmap");
return;
}
mArgs.enc_param = new jpg_enc_proc_param;
if (mArgs.enc_param == NULL) {
ALOGE("Failed to allocate the memory for enc_param");
return;
}
memset(mArgs.enc_param, 0, sizeof(jpg_enc_proc_param));
mArgs.thumb_enc_param = new jpg_enc_proc_param;
if (mArgs.thumb_enc_param == NULL) {
ALOGE("Failed to allocate the memory for thumb_enc_param");
delete mArgs.enc_param;
return;
}
memset(mArgs.thumb_enc_param, 0, sizeof(jpg_enc_proc_param));
mArgs.enc_param->sample_mode = JPG_420;
mArgs.enc_param->enc_type = JPG_MAIN;
mArgs.thumb_enc_param->sample_mode = JPG_420;
mArgs.thumb_enc_param->enc_type = JPG_THUMBNAIL;
available = true;
}
JpegEncoder::~JpegEncoder()
{
if (mArgs.mmapped_addr != (char*)MAP_FAILED)
munmap(mArgs.mmapped_addr, JPG_TOTAL_BUF_SIZE);
delete mArgs.enc_param;
delete mArgs.thumb_enc_param;
if (mDevFd > 0)
close(mDevFd);
}
jpg_return_status JpegEncoder::setConfig(jpeg_conf type, int32_t value)
{
if (!available)
return JPG_FAIL;
jpg_return_status ret = JPG_SUCCESS;
switch (type) {
case JPEG_SET_ENCODE_WIDTH:
if (value < 0 || value > MAX_JPG_WIDTH)
ret = JPG_FAIL;
else
mArgs.enc_param->width = value;
break;
case JPEG_SET_ENCODE_HEIGHT:
if (value < 0 || value > MAX_JPG_HEIGHT)
ret = JPG_FAIL;
else
mArgs.enc_param->height = value;
break;
case JPEG_SET_ENCODE_QUALITY:
if (value < JPG_QUALITY_LEVEL_1 || value > JPG_QUALITY_LEVEL_4)
ret = JPG_FAIL;
else
mArgs.enc_param->quality = (image_quality_type_t)value;
break;
case JPEG_SET_ENCODE_IN_FORMAT:
if (value != JPG_MODESEL_YCBCR && value != JPG_MODESEL_RGB) {
ret = JPG_FAIL;
} else {
mArgs.enc_param->in_format = (in_mode_t)value;
mArgs.thumb_enc_param->in_format = (in_mode_t)value;
}
break;
case JPEG_SET_SAMPING_MODE:
if (value != JPG_420 && value != JPG_422) {
ret = JPG_FAIL;
} else {
mArgs.enc_param->sample_mode = (sample_mode_t)value;
mArgs.thumb_enc_param->sample_mode = (sample_mode_t)value;
}
break;
case JPEG_SET_THUMBNAIL_WIDTH:
if (value < 0 || value > MAX_JPG_THUMBNAIL_WIDTH)
ret = JPG_FAIL;
else
mArgs.thumb_enc_param->width = value;
break;
case JPEG_SET_THUMBNAIL_HEIGHT:
if (value < 0 || value > MAX_JPG_THUMBNAIL_HEIGHT)
ret = JPG_FAIL;
else
mArgs.thumb_enc_param->height = value;
break;
default:
ALOGE("Invalid Config type");
ret = ERR_UNKNOWN;
}
if (ret == JPG_FAIL)
ALOGE("Invalid value(%d) for %d type", value, type);
return ret;
}
void* JpegEncoder::getInBuf(uint64_t size)
{
if (!available)
return NULL;
if (size > JPG_FRAME_BUF_SIZE) {
ALOGE("The buffer size requested is too large");
return NULL;
}
mArgs.in_buf = (char *)ioctl(mDevFd, IOCTL_JPG_GET_FRMBUF, mArgs.mmapped_addr);
return (void *)(mArgs.in_buf);
}
void* JpegEncoder::getOutBuf(uint64_t *size)
{
if (!available)
return NULL;
if (mArgs.enc_param->file_size <= 0) {
ALOGE("The buffer requested doesn't have data");
return NULL;
}
mArgs.out_buf = (char *)ioctl(mDevFd, IOCTL_JPG_GET_STRBUF, mArgs.mmapped_addr);
*size = mArgs.enc_param->file_size;
return (void *)(mArgs.out_buf);
}
void* JpegEncoder::getThumbInBuf(uint64_t size)
{
if (!available)
return NULL;
if (size > JPG_FRAME_THUMB_BUF_SIZE) {
ALOGE("The buffer size requested is too large");
return NULL;
}
mArgs.in_thumb_buf = (char *)ioctl(mDevFd, IOCTL_JPG_GET_THUMB_FRMBUF, mArgs.mmapped_addr);
return (void *)(mArgs.in_thumb_buf);
}
void* JpegEncoder::getThumbOutBuf(uint64_t *size)
{
if (!available)
return NULL;
if (mArgs.thumb_enc_param->file_size <= 0) {
ALOGE("The buffer requested doesn't have data");
return NULL;
}
mArgs.out_thumb_buf = (char *)ioctl(mDevFd, IOCTL_JPG_GET_THUMB_STRBUF, mArgs.mmapped_addr);
*size = mArgs.thumb_enc_param->file_size;
return (void *)(mArgs.out_thumb_buf);
}
jpg_return_status JpegEncoder::encode(unsigned int *size, exif_attribute_t *exifInfo)
{
if (!available)
return JPG_FAIL;
ALOGD("encode E");
jpg_return_status ret = JPG_FAIL;
unsigned char *exifOut = NULL;
jpg_enc_proc_param *param = mArgs.enc_param;
ret = checkMcu(param->sample_mode, param->width, param->height, false);
if (ret != JPG_SUCCESS)
return ret;
param->enc_type = JPG_MAIN;
ret = (jpg_return_status)ioctl(mDevFd, IOCTL_JPG_ENCODE, &mArgs);
if (ret != JPG_SUCCESS) {
ALOGE("Failed to encode main image");
return ret;
}
mArgs.out_buf = (char *)ioctl(mDevFd, IOCTL_JPG_GET_STRBUF, mArgs.mmapped_addr);
if (exifInfo) {
unsigned int thumbLen, exifLen;
uint_t bufSize = 0;
if (exifInfo->enableThumb) {
ret = encodeThumbImg(&thumbLen);
if (ret != JPG_SUCCESS) {
ALOGE("Failed to encode for thumbnail image");
bufSize = EXIF_FILE_SIZE;
exifInfo->enableThumb = false;
} else {
bufSize = EXIF_FILE_SIZE + thumbLen;
}
} else {
bufSize = EXIF_FILE_SIZE;
}
if (mArgs.enc_param->file_size + bufSize > JPG_TOTAL_BUF_SIZE)
return ret;
exifOut = new unsigned char[bufSize];
if (exifOut == NULL) {
ALOGE("Failed to allocate for exifOut");
return ret;
}
memset(exifOut, 0, bufSize);
ret = makeExif (exifOut, exifInfo, &exifLen);
if (ret != JPG_SUCCESS) {
ALOGE("Failed to make EXIF");
delete[] exifOut;
return ret;
}
memmove(&mArgs.out_buf[exifLen + 2], &mArgs.out_buf[2], param->file_size - 2);
memcpy(&mArgs.out_buf[2], exifOut, exifLen);
param->file_size += exifLen;
}
delete[] exifOut;
*size = param->file_size;
#if MAIN_DUMP
FILE *fout = NULL;
char file_name[50] = "/data/main.jpg";
fout = fopen(file_name, "wb");
if (!fout)
perror(&file_name[0]);
size_t nwrite = fwrite(mArgs.out_buf, sizeof(char), param->file_size, fout);
fclose(fout);
#endif
ALOGD("encode X");
return ret;
}
jpg_return_status JpegEncoder::encodeThumbImg(unsigned int *size, bool useMain)
{
if (!available)
return JPG_FAIL;
ALOGD("encodeThumbImg E");
jpg_return_status ret = JPG_FAIL;
jpg_enc_proc_param *param = mArgs.thumb_enc_param;
if (useMain) {
mArgs.in_thumb_buf = (char *)getThumbInBuf(param->width*param->height*2);
if (mArgs.in_thumb_buf == NULL) {
ALOGE("Failed to get the buffer for thumbnail");
return JPG_FAIL;
}
ret = (jpg_return_status)scaleDownYuv422(mArgs.in_buf,
mArgs.enc_param->width,
mArgs.enc_param->height,
mArgs.in_thumb_buf,
param->width,
param->height);
if (ret != JPG_SUCCESS)
return JPG_FAIL;
}
ret = checkMcu(param->sample_mode, param->width, param->height, true);
if (ret != JPG_SUCCESS)
return JPG_FAIL;
mArgs.enc_param->enc_type = JPG_THUMBNAIL;
ret = (jpg_return_status)ioctl(mDevFd, IOCTL_JPG_ENCODE, &mArgs);
if (ret != JPG_SUCCESS) {
ALOGE("Failed to encode for thumbnail");
return JPG_FAIL;
}
mArgs.out_thumb_buf = (char *)ioctl(mDevFd, IOCTL_JPG_GET_THUMB_STRBUF, mArgs.mmapped_addr);
#if THUMB_DUMP
FILE *fout = NULL;
char file_name[50] = "/data/thumb.jpg";
fout = fopen(file_name, "wb");
if (!fout)
perror(&file_name[0]);
size_t nwrite = fwrite(mArgs.out_thumb_buf, sizeof(char), param->file_size, fout);
fclose(fout);
#endif
ALOGD("encodeThumbImg X");
return JPG_SUCCESS;
}
jpg_return_status JpegEncoder::makeExif (unsigned char *exifOut,
exif_attribute_t *exifInfo,
unsigned int *size,
bool useMainbufForThumb)
{
if (!available)
return JPG_FAIL;
ALOGD("makeExif E");
unsigned char *pCur, *pApp1Start, *pIfdStart, *pGpsIfdPtr, *pNextIfdOffset;
unsigned int tmp, LongerTagOffest = 0;
pApp1Start = pCur = exifOut;
//2 Exif Identifier Code & TIFF Header
pCur += 4; // Skip 4 Byte for APP1 marker and length
unsigned char ExifIdentifierCode[6] = { 0x45, 0x78, 0x69, 0x66, 0x00, 0x00 };
memcpy(pCur, ExifIdentifierCode, 6);
pCur += 6;
/* Byte Order - little endian, Offset of IFD - 0x00000008.H */
unsigned char TiffHeader[8] = { 0x49, 0x49, 0x2A, 0x00, 0x08, 0x00, 0x00, 0x00 };
memcpy(pCur, TiffHeader, 8);
pIfdStart = pCur;
pCur += 8;
//2 0th IFD TIFF Tags
if (exifInfo->enableGps)
tmp = NUM_0TH_IFD_TIFF;
else
tmp = NUM_0TH_IFD_TIFF - 1;
memcpy(pCur, &tmp, NUM_SIZE);
pCur += NUM_SIZE;
LongerTagOffest += 8 + NUM_SIZE + tmp*IFD_SIZE + OFFSET_SIZE;
writeExifIfd(&pCur, EXIF_TAG_IMAGE_WIDTH, EXIF_TYPE_LONG,
1, exifInfo->width);
writeExifIfd(&pCur, EXIF_TAG_IMAGE_HEIGHT, EXIF_TYPE_LONG,
1, exifInfo->height);
writeExifIfd(&pCur, EXIF_TAG_MAKE, EXIF_TYPE_ASCII,
strlen((char *)exifInfo->maker) + 1, exifInfo->maker, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_MODEL, EXIF_TYPE_ASCII,
strlen((char *)exifInfo->model) + 1, exifInfo->model, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_ORIENTATION, EXIF_TYPE_SHORT,
1, exifInfo->orientation);
writeExifIfd(&pCur, EXIF_TAG_SOFTWARE, EXIF_TYPE_ASCII,
strlen((char *)exifInfo->software) + 1, exifInfo->software, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_DATE_TIME, EXIF_TYPE_ASCII,
20, exifInfo->date_time, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_YCBCR_POSITIONING, EXIF_TYPE_SHORT,
1, exifInfo->ycbcr_positioning);
writeExifIfd(&pCur, EXIF_TAG_EXIF_IFD_POINTER, EXIF_TYPE_LONG,
1, LongerTagOffest);
if (exifInfo->enableGps) {
pGpsIfdPtr = pCur;
pCur += IFD_SIZE; // Skip a ifd size for gps IFD pointer
}
pNextIfdOffset = pCur; // Skip a offset size for next IFD offset
pCur += OFFSET_SIZE;
//2 0th IFD Exif Private Tags
pCur = pIfdStart + LongerTagOffest;
tmp = NUM_0TH_IFD_EXIF;
memcpy(pCur, &tmp , NUM_SIZE);
pCur += NUM_SIZE;
LongerTagOffest += NUM_SIZE + NUM_0TH_IFD_EXIF*IFD_SIZE + OFFSET_SIZE;
writeExifIfd(&pCur, EXIF_TAG_EXPOSURE_TIME, EXIF_TYPE_RATIONAL,
1, &exifInfo->exposure_time, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_FNUMBER, EXIF_TYPE_RATIONAL,
1, &exifInfo->fnumber, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_EXPOSURE_PROGRAM, EXIF_TYPE_SHORT,
1, exifInfo->exposure_program);
writeExifIfd(&pCur, EXIF_TAG_ISO_SPEED_RATING, EXIF_TYPE_SHORT,
1, exifInfo->iso_speed_rating);
writeExifIfd(&pCur, EXIF_TAG_EXIF_VERSION, EXIF_TYPE_UNDEFINED,
4, exifInfo->exif_version);
writeExifIfd(&pCur, EXIF_TAG_DATE_TIME_ORG, EXIF_TYPE_ASCII,
20, exifInfo->date_time, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_DATE_TIME_DIGITIZE, EXIF_TYPE_ASCII,
20, exifInfo->date_time, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_SHUTTER_SPEED, EXIF_TYPE_SRATIONAL,
1, (rational_t *)&exifInfo->shutter_speed, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_APERTURE, EXIF_TYPE_RATIONAL,
1, &exifInfo->aperture, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_BRIGHTNESS, EXIF_TYPE_SRATIONAL,
1, (rational_t *)&exifInfo->brightness, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_EXPOSURE_BIAS, EXIF_TYPE_SRATIONAL,
1, (rational_t *)&exifInfo->exposure_bias, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_MAX_APERTURE, EXIF_TYPE_RATIONAL,
1, &exifInfo->max_aperture, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_METERING_MODE, EXIF_TYPE_SHORT,
1, exifInfo->metering_mode);
writeExifIfd(&pCur, EXIF_TAG_FLASH, EXIF_TYPE_SHORT,
1, exifInfo->flash);
writeExifIfd(&pCur, EXIF_TAG_FOCAL_LENGTH, EXIF_TYPE_RATIONAL,
1, &exifInfo->focal_length, &LongerTagOffest, pIfdStart);
char code[8] = { 0x00, 0x00, 0x00, 0x49, 0x49, 0x43, 0x53, 0x41 };
int commentsLen = strlen((char *)exifInfo->user_comment) + 1;
memmove(exifInfo->user_comment + sizeof(code), exifInfo->user_comment, commentsLen);
memcpy(exifInfo->user_comment, code, sizeof(code));
writeExifIfd(&pCur, EXIF_TAG_USER_COMMENT, EXIF_TYPE_UNDEFINED,
commentsLen + sizeof(code), exifInfo->user_comment, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_COLOR_SPACE, EXIF_TYPE_SHORT,
1, exifInfo->color_space);
writeExifIfd(&pCur, EXIF_TAG_PIXEL_X_DIMENSION, EXIF_TYPE_LONG,
1, exifInfo->width);
writeExifIfd(&pCur, EXIF_TAG_PIXEL_Y_DIMENSION, EXIF_TYPE_LONG,
1, exifInfo->height);
writeExifIfd(&pCur, EXIF_TAG_EXPOSURE_MODE, EXIF_TYPE_LONG,
1, exifInfo->exposure_mode);
writeExifIfd(&pCur, EXIF_TAG_WHITE_BALANCE, EXIF_TYPE_LONG,
1, exifInfo->white_balance);
writeExifIfd(&pCur, EXIF_TAG_SCENCE_CAPTURE_TYPE, EXIF_TYPE_LONG,
1, exifInfo->scene_capture_type);
tmp = 0;
memcpy(pCur, &tmp, OFFSET_SIZE); // next IFD offset
pCur += OFFSET_SIZE;
//2 0th IFD GPS Info Tags
if (exifInfo->enableGps) {
writeExifIfd(&pGpsIfdPtr, EXIF_TAG_GPS_IFD_POINTER, EXIF_TYPE_LONG,
1, LongerTagOffest); // GPS IFD pointer skipped on 0th IFD
pCur = pIfdStart + LongerTagOffest;
if (exifInfo->gps_processing_method[0] == 0) {
// don't create GPS_PROCESSING_METHOD tag if there isn't any
tmp = NUM_0TH_IFD_GPS - 1;
} else {
tmp = NUM_0TH_IFD_GPS;
}
memcpy(pCur, &tmp, NUM_SIZE);
pCur += NUM_SIZE;
LongerTagOffest += NUM_SIZE + tmp*IFD_SIZE + OFFSET_SIZE;
writeExifIfd(&pCur, EXIF_TAG_GPS_VERSION_ID, EXIF_TYPE_BYTE,
4, exifInfo->gps_version_id);
writeExifIfd(&pCur, EXIF_TAG_GPS_LATITUDE_REF, EXIF_TYPE_ASCII,
2, exifInfo->gps_latitude_ref);
writeExifIfd(&pCur, EXIF_TAG_GPS_LATITUDE, EXIF_TYPE_RATIONAL,
3, exifInfo->gps_latitude, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_GPS_LONGITUDE_REF, EXIF_TYPE_ASCII,
2, exifInfo->gps_longitude_ref);
writeExifIfd(&pCur, EXIF_TAG_GPS_LONGITUDE, EXIF_TYPE_RATIONAL,
3, exifInfo->gps_longitude, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_GPS_ALTITUDE_REF, EXIF_TYPE_BYTE,
1, exifInfo->gps_altitude_ref);
writeExifIfd(&pCur, EXIF_TAG_GPS_ALTITUDE, EXIF_TYPE_RATIONAL,
1, &exifInfo->gps_altitude, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_GPS_TIMESTAMP, EXIF_TYPE_RATIONAL,
3, exifInfo->gps_timestamp, &LongerTagOffest, pIfdStart);
tmp = strlen((char*)exifInfo->gps_processing_method);
if (tmp > 0) {
if (tmp > 100) {
tmp = 100;
}
unsigned char tmp_buf[100+sizeof(ExifAsciiPrefix)];
memcpy(tmp_buf, ExifAsciiPrefix, sizeof(ExifAsciiPrefix));
memcpy(&tmp_buf[sizeof(ExifAsciiPrefix)], exifInfo->gps_processing_method, tmp);
writeExifIfd(&pCur, EXIF_TAG_GPS_PROCESSING_METHOD, EXIF_TYPE_UNDEFINED,
tmp+sizeof(ExifAsciiPrefix), tmp_buf, &LongerTagOffest, pIfdStart);
}
writeExifIfd(&pCur, EXIF_TAG_GPS_DATESTAMP, EXIF_TYPE_ASCII,
11, exifInfo->gps_datestamp, &LongerTagOffest, pIfdStart);
tmp = 0;
memcpy(pCur, &tmp, OFFSET_SIZE); // next IFD offset
pCur += OFFSET_SIZE;
}
//2 1th IFD TIFF Tags
char *thumbBuf;
int thumbSize;
if (useMainbufForThumb) {
thumbBuf = mArgs.out_buf;
thumbSize = mArgs.enc_param->file_size;
} else {
thumbBuf = mArgs.out_thumb_buf;
thumbSize = mArgs.thumb_enc_param->file_size;
}
if (exifInfo->enableThumb && (thumbBuf != NULL) && (thumbSize > 0)) {
tmp = LongerTagOffest;
memcpy(pNextIfdOffset, &tmp, OFFSET_SIZE); // NEXT IFD offset skipped on 0th IFD
pCur = pIfdStart + LongerTagOffest;
tmp = NUM_1TH_IFD_TIFF;
memcpy(pCur, &tmp, NUM_SIZE);
pCur += NUM_SIZE;
LongerTagOffest += NUM_SIZE + NUM_1TH_IFD_TIFF*IFD_SIZE + OFFSET_SIZE;
writeExifIfd(&pCur, EXIF_TAG_IMAGE_WIDTH, EXIF_TYPE_LONG,
1, exifInfo->widthThumb);
writeExifIfd(&pCur, EXIF_TAG_IMAGE_HEIGHT, EXIF_TYPE_LONG,
1, exifInfo->heightThumb);
writeExifIfd(&pCur, EXIF_TAG_COMPRESSION_SCHEME, EXIF_TYPE_SHORT,
1, exifInfo->compression_scheme);
writeExifIfd(&pCur, EXIF_TAG_ORIENTATION, EXIF_TYPE_SHORT,
1, exifInfo->orientation);
writeExifIfd(&pCur, EXIF_TAG_X_RESOLUTION, EXIF_TYPE_RATIONAL,
1, &exifInfo->x_resolution, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_Y_RESOLUTION, EXIF_TYPE_RATIONAL,
1, &exifInfo->y_resolution, &LongerTagOffest, pIfdStart);
writeExifIfd(&pCur, EXIF_TAG_RESOLUTION_UNIT, EXIF_TYPE_SHORT,
1, exifInfo->resolution_unit);
writeExifIfd(&pCur, EXIF_TAG_JPEG_INTERCHANGE_FORMAT, EXIF_TYPE_LONG,
1, LongerTagOffest);
writeExifIfd(&pCur, EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LEN, EXIF_TYPE_LONG,
1, thumbSize);
tmp = 0;
memcpy(pCur, &tmp, OFFSET_SIZE); // next IFD offset
pCur += OFFSET_SIZE;
memcpy(pIfdStart + LongerTagOffest,
thumbBuf, thumbSize);
LongerTagOffest += thumbSize;
} else {
tmp = 0;
memcpy(pNextIfdOffset, &tmp, OFFSET_SIZE); // NEXT IFD offset skipped on 0th IFD
}
unsigned char App1Marker[2] = { 0xff, 0xe1 };
memcpy(pApp1Start, App1Marker, 2);
pApp1Start += 2;
*size = 10 + LongerTagOffest;
tmp = *size - 2; // APP1 Maker isn't counted
unsigned char size_mm[2] = {(tmp >> 8) & 0xFF, tmp & 0xFF};
memcpy(pApp1Start, size_mm, 2);
ALOGD("makeExif X");
return JPG_SUCCESS;
}
jpg_return_status JpegEncoder::checkMcu(sample_mode_t sampleMode,
uint32_t width, uint32_t height, bool isThumb)
{
if (!available)
return JPG_FAIL;
uint32_t expectedWidth = width;
uint32_t expectedHeight = height;
switch (sampleMode){
case JPG_422:
if (width % 16 != 0)
expectedWidth = width + 16 - (width % 16);
if (height % 8 != 0)
expectedHeight = height + 8 - (height % 8);
break;
case JPG_420:
if (width % 16 != 0)
expectedWidth = width + 16 - (width % 16);
if (height % 16 != 0)
expectedHeight = height + 16 - (height % 16);
break;
default:
ALOGE("Invaild sample mode");
return JPG_FAIL;
}
if (expectedWidth == width && expectedHeight == height)
return JPG_SUCCESS;
ALOGW("The image is not matched for MCU");
uint32_t size = width*height * 2;
char *srcBuf, *dstBuf;
if ((srcBuf = new char[size]) == NULL) {
ALOGE("Failed to allocate for srcBuf");
return JPG_FAIL;
}
if (!isThumb)
dstBuf = mArgs.in_buf;
else
dstBuf = mArgs.in_thumb_buf;
memcpy(srcBuf, dstBuf, size);
bool ret = pad(srcBuf, width, height, dstBuf, expectedWidth, expectedHeight);
delete[] srcBuf;
return JPG_SUCCESS;
}
bool JpegEncoder::pad(char *srcBuf, uint32_t srcWidth, uint32_t srcHight,
char *dstBuf, uint32_t dstWidth, uint32_t dstHight)
{
if (!available)
return false;
if (srcBuf == NULL || dstBuf == NULL) {
ALOGE("srcBuf or dstBuf is NULL");
return false;
}
int padW = dstWidth - srcWidth;
int padH = dstHight - srcHight;
if ((int)(dstWidth - srcWidth) < 0 ||
(int)(dstHight - srcHight) < 0) {
ALOGE("dstSize is smaller than srcSize");
return false;
}
memset(dstBuf, 0, dstWidth*dstHight * 2);
for (uint32_t i = 0; i < srcHight; i++)
memcpy(dstBuf + i * dstWidth * 2, srcBuf + i * srcWidth * 2, srcWidth * 2);
return true;
}
bool JpegEncoder::scaleDownYuv422(char *srcBuf, uint32_t srcWidth, uint32_t srcHight,
char *dstBuf, uint32_t dstWidth, uint32_t dstHight)
{
if (!available)
return false;
int32_t step_x, step_y;
int32_t iXsrc, iXdst;
int32_t x, y, src_y_start_pos, dst_pos, src_pos;
if (dstWidth % 2 != 0 || dstHight % 2 != 0){
ALOGE("scale_down_yuv422: invalid width, height for scaling");
return false;
}
step_x = srcWidth / dstWidth;
step_y = srcHight / dstHight;
dst_pos = 0;
for (uint32_t y = 0; y < dstHight; y++) {
src_y_start_pos = (y * step_y * (srcWidth * 2));
for (uint32_t x = 0; x < dstWidth; x += 2) {
src_pos = src_y_start_pos + (x * (step_x * 2));
dstBuf[dst_pos++] = srcBuf[src_pos ];
dstBuf[dst_pos++] = srcBuf[src_pos + 1];
dstBuf[dst_pos++] = srcBuf[src_pos + 2];
dstBuf[dst_pos++] = srcBuf[src_pos + 3];
}
}
return true;
}
inline void JpegEncoder::writeExifIfd(unsigned char **pCur,
unsigned short tag,
unsigned short type,
unsigned int count,
uint32_t value)
{
memcpy(*pCur, &tag, 2);
*pCur += 2;
memcpy(*pCur, &type, 2);
*pCur += 2;
memcpy(*pCur, &count, 4);
*pCur += 4;
memcpy(*pCur, &value, 4);
*pCur += 4;
}
inline void JpegEncoder::writeExifIfd(unsigned char **pCur,
unsigned short tag,
unsigned short type,
unsigned int count,
unsigned char *pValue)
{
char buf[4] = { 0,};
memcpy(buf, pValue, count);
memcpy(*pCur, &tag, 2);
*pCur += 2;
memcpy(*pCur, &type, 2);
*pCur += 2;
memcpy(*pCur, &count, 4);
*pCur += 4;
memcpy(*pCur, buf, 4);
*pCur += 4;
}
inline void JpegEncoder::writeExifIfd(unsigned char **pCur,
unsigned short tag,
unsigned short type,
unsigned int count,
unsigned char *pValue,
unsigned int *offset,
unsigned char *start)
{
memcpy(*pCur, &tag, 2);
*pCur += 2;
memcpy(*pCur, &type, 2);
*pCur += 2;
memcpy(*pCur, &count, 4);
*pCur += 4;
memcpy(*pCur, offset, 4);
*pCur += 4;
memcpy(start + *offset, pValue, count);
*offset += count;
}
inline void JpegEncoder::writeExifIfd(unsigned char **pCur,
unsigned short tag,
unsigned short type,
unsigned int count,
rational_t *pValue,
unsigned int *offset,
unsigned char *start)
{
memcpy(*pCur, &tag, 2);
*pCur += 2;
memcpy(*pCur, &type, 2);
*pCur += 2;
memcpy(*pCur, &count, 4);
*pCur += 4;
memcpy(*pCur, offset, 4);
*pCur += 4;
memcpy(start + *offset, pValue, 8 * count);
*offset += 8 * count;
}
};