/*
* 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.
*/
#include "Decoder_libjpeg.h"
extern "C" {
#include "jpeglib.h"
#include "jerror.h"
}
#define NUM_COMPONENTS_IN_YUV 3
namespace Ti {
namespace Camera {
/* JPEG DHT Segment omitted from MJPEG data */
static unsigned char jpeg_odml_dht[0x1a6] = {
0xff, 0xd8, /* Start of Image */
0xff, 0xc4, 0x01, 0xa2, /* Define Huffman Table */
0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00, 0x00, 0x01, 0x7d,
0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
0xf9, 0xfa,
0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04, 0x00, 0x01, 0x02, 0x77,
0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71,
0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0,
0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26,
0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48,
0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5,
0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3,
0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
0xf9, 0xfa
};
struct libjpeg_source_mgr : jpeg_source_mgr {
libjpeg_source_mgr(unsigned char *buffer_ptr, int len);
~libjpeg_source_mgr();
unsigned char *mBufferPtr;
int mFilledLen;
};
static void libjpeg_init_source(j_decompress_ptr cinfo) {
libjpeg_source_mgr* src = (libjpeg_source_mgr*)cinfo->src;
src->next_input_byte = (const JOCTET*)src->mBufferPtr;
src->bytes_in_buffer = 0;
src->current_offset = 0;
}
static boolean libjpeg_seek_input_data(j_decompress_ptr cinfo, long byte_offset) {
libjpeg_source_mgr* src = (libjpeg_source_mgr*)cinfo->src;
src->current_offset = byte_offset;
src->next_input_byte = (const JOCTET*)src->mBufferPtr + byte_offset;
src->bytes_in_buffer = 0;
return TRUE;
}
static boolean libjpeg_fill_input_buffer(j_decompress_ptr cinfo) {
libjpeg_source_mgr* src = (libjpeg_source_mgr*)cinfo->src;
src->current_offset += src->mFilledLen;
src->next_input_byte = src->mBufferPtr;
src->bytes_in_buffer = src->mFilledLen;
return TRUE;
}
static void libjpeg_skip_input_data(j_decompress_ptr cinfo, long num_bytes) {
libjpeg_source_mgr* src = (libjpeg_source_mgr*)cinfo->src;
if (num_bytes > (long)src->bytes_in_buffer) {
CAMHAL_LOGEA("\n\n\n libjpeg_skip_input_data - num_bytes > (long)src->bytes_in_buffer \n\n\n");
} else {
src->next_input_byte += num_bytes;
src->bytes_in_buffer -= num_bytes;
}
}
static boolean libjpeg_resync_to_restart(j_decompress_ptr cinfo, int desired) {
libjpeg_source_mgr* src = (libjpeg_source_mgr*)cinfo->src;
src->next_input_byte = (const JOCTET*)src->mBufferPtr;
src->bytes_in_buffer = 0;
return TRUE;
}
static void libjpeg_term_source(j_decompress_ptr /*cinfo*/) {}
libjpeg_source_mgr::libjpeg_source_mgr(unsigned char *buffer_ptr, int len) : mBufferPtr(buffer_ptr), mFilledLen(len) {
init_source = libjpeg_init_source;
fill_input_buffer = libjpeg_fill_input_buffer;
skip_input_data = libjpeg_skip_input_data;
resync_to_restart = libjpeg_resync_to_restart;
term_source = libjpeg_term_source;
seek_input_data = libjpeg_seek_input_data;
}
libjpeg_source_mgr::~libjpeg_source_mgr() {}
Decoder_libjpeg::Decoder_libjpeg()
{
mWidth = 0;
mHeight = 0;
Y_Plane = NULL;
U_Plane = NULL;
V_Plane = NULL;
UV_Plane = NULL;
}
Decoder_libjpeg::~Decoder_libjpeg()
{
release();
}
void Decoder_libjpeg::release()
{
if (Y_Plane) {
free(Y_Plane);
Y_Plane = NULL;
}
if (U_Plane) {
free(U_Plane);
U_Plane = NULL;
}
if (V_Plane) {
free(V_Plane);
V_Plane = NULL;
}
if (UV_Plane) {
free(UV_Plane);
UV_Plane = NULL;
}
}
int Decoder_libjpeg::readDHTSize()
{
return sizeof(jpeg_odml_dht);
}
int Decoder_libjpeg::appendDHT(unsigned char *jpeg_src, int filled_len, unsigned char *jpeg_with_dht_buffer, int buff_size)
{
/* Appending DHT to JPEG */
int len = filled_len + sizeof(jpeg_odml_dht) - 2; // final length of jpeg data
if (len > buff_size) {
CAMHAL_LOGEA("\n\n\n Buffer size too small. filled_len=%d, buff_size=%d, sizeof(jpeg_odml_dht)=%d\n\n\n", filled_len, buff_size, sizeof(jpeg_odml_dht));
return 0;
}
memcpy(jpeg_with_dht_buffer, jpeg_odml_dht, sizeof(jpeg_odml_dht));
memcpy((jpeg_with_dht_buffer + sizeof(jpeg_odml_dht)), jpeg_src + 2, (filled_len - 2));
return len;
}
bool Decoder_libjpeg::decode(unsigned char *jpeg_src, int filled_len, unsigned char *nv12_buffer, int stride)
{
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
struct libjpeg_source_mgr s_mgr(jpeg_src, filled_len);
if (filled_len == 0)
return false;
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_decompress(&cinfo);
cinfo.src = &s_mgr;
int status = jpeg_read_header(&cinfo, true);
if (status != JPEG_HEADER_OK) {
CAMHAL_LOGEA("jpeg header corrupted");
return false;
}
cinfo.out_color_space = JCS_YCbCr;
cinfo.raw_data_out = true;
status = jpeg_start_decompress(&cinfo);
if (!status){
CAMHAL_LOGEA("jpeg_start_decompress failed");
return false;
}
if (mWidth == 0){
mWidth = cinfo.output_width;
mHeight = cinfo.output_height;
CAMHAL_LOGEA("w x h = %d x %d. stride=%d", cinfo.output_width, cinfo.output_height, stride);
}
else if ((cinfo.output_width > mWidth) || (cinfo.output_height > mHeight)) {
CAMHAL_LOGEA(" Free the existing buffers so that they are reallocated for new w x h. Old WxH = %dx%d. New WxH = %dx%d",
mWidth, mHeight, cinfo.output_width, cinfo.output_height);
release();
}
unsigned int decoded_uv_buffer_size = cinfo.output_width * cinfo.output_height / 2;
if (Y_Plane == NULL)Y_Plane = (unsigned char **)malloc(cinfo.output_height * sizeof(unsigned char *));
if (U_Plane == NULL)U_Plane = (unsigned char **)malloc(cinfo.output_height * sizeof(unsigned char *));
if (V_Plane == NULL)V_Plane = (unsigned char **)malloc(cinfo.output_height * sizeof(unsigned char *));
if (UV_Plane == NULL) UV_Plane = (unsigned char *)malloc(decoded_uv_buffer_size);
unsigned char **YUV_Planes[NUM_COMPONENTS_IN_YUV];
YUV_Planes[0] = Y_Plane;
YUV_Planes[1] = U_Plane;
YUV_Planes[2] = V_Plane;
unsigned char *row = &nv12_buffer[0];
// Y Component
for (unsigned int j = 0; j < cinfo.output_height; j++, row += stride)
YUV_Planes[0][j] = row;
row = &UV_Plane[0];
// U Component
for (unsigned int j = 0; j < cinfo.output_height; j+=2, row += cinfo.output_width / 2){
YUV_Planes[1][j+0] = row;
YUV_Planes[1][j+1] = row;
}
// V Component
for (unsigned int j = 0; j < cinfo.output_height; j+=2, row += cinfo.output_width / 2){
YUV_Planes[2][j+0] = row;
YUV_Planes[2][j+1] = row;
}
// Interleaving U and V
for (unsigned int i = 0; i < cinfo.output_height; i += 8) {
jpeg_read_raw_data(&cinfo, YUV_Planes, 8);
YUV_Planes[0] += 8;
YUV_Planes[1] += 8;
YUV_Planes[2] += 8;
}
unsigned char *uv_ptr = nv12_buffer + (stride * cinfo.output_height);
unsigned char *u_ptr = UV_Plane;
unsigned char *v_ptr = UV_Plane + (decoded_uv_buffer_size / 2);
for(unsigned int i = 0; i < cinfo.output_height / 2; i++){
for(unsigned int j = 0; j < cinfo.output_width; j+=2){
*(uv_ptr + j) = *u_ptr; u_ptr++;
*(uv_ptr + j + 1) = *v_ptr; v_ptr++;
}
uv_ptr = uv_ptr + stride;
}
jpeg_finish_decompress(&cinfo);
jpeg_destroy_decompress(&cinfo);
return true;
}
} // namespace Camera
} // namespace Ti