/*M/////////////////////////////////////////////////////////////////////////////////////// // // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. // // By downloading, copying, installing or using the software you agree to this license. // If you do not agree to this license, do not download, install, // copy or use the software. // // // Intel License Agreement // For Open Source Computer Vision Library // // Copyright (C) 2000, Intel Corporation, all rights reserved. // Third party copyrights are property of their respective owners. // // Redistribution and use in source and binary forms, with or without modification, // are permitted provided that the following conditions are met: // // * Redistribution's of source code must retain the above copyright notice, // this list of conditions and the following disclaimer. // // * Redistribution's 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. // // * The name of Intel Corporation may not be used to endorse or promote products // derived from this software without specific prior written permission. // // This software is provided by the copyright holders and contributors "as is" and // any express or implied warranties, including, but not limited to, the implied // warranties of merchantability and fitness for a particular purpose are disclaimed. // In no event shall the Intel Corporation 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. // //M*/ #include "precomp.hpp" #include "grfmt_jpeg.hpp" #ifdef HAVE_JPEG #ifdef _MSC_VER //interaction between '_setjmp' and C++ object destruction is non-portable #pragma warning(disable: 4611) #endif #include #include // the following defines are a hack to avoid multiple problems with frame ponter handling and setjmp // see http://gcc.gnu.org/ml/gcc/2011-10/msg00324.html for some details #define mingw_getsp(...) 0 #define __builtin_frame_address(...) 0 #ifdef WIN32 #define XMD_H // prevent redefinition of INT32 #undef FAR // prevent FAR redefinition #endif #if defined WIN32 && defined __GNUC__ typedef unsigned char boolean; #endif #undef FALSE #undef TRUE extern "C" { #include "jpeglib.h" } namespace cv { #ifdef _MSC_VER # pragma warning(push) # pragma warning(disable:4324) //structure was padded due to __declspec(align()) #endif struct JpegErrorMgr { struct jpeg_error_mgr pub; jmp_buf setjmp_buffer; }; #ifdef _MSC_VER # pragma warning(pop) #endif struct JpegSource { struct jpeg_source_mgr pub; int skip; }; struct JpegState { jpeg_decompress_struct cinfo; // IJG JPEG codec structure JpegErrorMgr jerr; // error processing manager state JpegSource source; // memory buffer source }; /////////////////////// Error processing ///////////////////// METHODDEF(void) stub(j_decompress_ptr) { } METHODDEF(boolean) fill_input_buffer(j_decompress_ptr) { return FALSE; } // emulating memory input stream METHODDEF(void) skip_input_data(j_decompress_ptr cinfo, long num_bytes) { JpegSource* source = (JpegSource*) cinfo->src; if( num_bytes > (long)source->pub.bytes_in_buffer ) { // We need to skip more data than we have in the buffer. // This will force the JPEG library to suspend decoding. source->skip = (int)(num_bytes - source->pub.bytes_in_buffer); source->pub.next_input_byte += source->pub.bytes_in_buffer; source->pub.bytes_in_buffer = 0; } else { // Skip portion of the buffer source->pub.bytes_in_buffer -= num_bytes; source->pub.next_input_byte += num_bytes; source->skip = 0; } } static void jpeg_buffer_src(j_decompress_ptr cinfo, JpegSource* source) { cinfo->src = &source->pub; // Prepare for suspending reader source->pub.init_source = stub; source->pub.fill_input_buffer = fill_input_buffer; source->pub.skip_input_data = skip_input_data; source->pub.resync_to_restart = jpeg_resync_to_restart; source->pub.term_source = stub; source->pub.bytes_in_buffer = 0; // forces fill_input_buffer on first read source->skip = 0; } METHODDEF(void) error_exit( j_common_ptr cinfo ) { JpegErrorMgr* err_mgr = (JpegErrorMgr*)(cinfo->err); /* Return control to the setjmp point */ longjmp( err_mgr->setjmp_buffer, 1 ); } /////////////////////// JpegDecoder /////////////////// JpegDecoder::JpegDecoder() { m_signature = "\xFF\xD8\xFF"; m_state = 0; m_f = 0; m_buf_supported = true; } JpegDecoder::~JpegDecoder() { close(); } void JpegDecoder::close() { if( m_state ) { JpegState* state = (JpegState*)m_state; jpeg_destroy_decompress( &state->cinfo ); delete state; m_state = 0; } if( m_f ) { fclose( m_f ); m_f = 0; } m_width = m_height = 0; m_type = -1; } ImageDecoder JpegDecoder::newDecoder() const { return new JpegDecoder; } bool JpegDecoder::readHeader() { bool result = false; close(); JpegState* state = new JpegState; m_state = state; state->cinfo.err = jpeg_std_error(&state->jerr.pub); state->jerr.pub.error_exit = error_exit; if( setjmp( state->jerr.setjmp_buffer ) == 0 ) { jpeg_create_decompress( &state->cinfo ); if( !m_buf.empty() ) { jpeg_buffer_src(&state->cinfo, &state->source); state->source.pub.next_input_byte = m_buf.data; state->source.pub.bytes_in_buffer = m_buf.cols*m_buf.rows*m_buf.elemSize(); } else { m_f = fopen( m_filename.c_str(), "rb" ); if( m_f ) jpeg_stdio_src( &state->cinfo, m_f ); } if (state->cinfo.src != 0) { jpeg_read_header( &state->cinfo, TRUE ); m_width = state->cinfo.image_width; m_height = state->cinfo.image_height; m_type = state->cinfo.num_components > 1 ? CV_8UC3 : CV_8UC1; result = true; } } if( !result ) close(); return result; } /*************************************************************************** * following code is for supporting MJPEG image files * based on a message of Laurent Pinchart on the video4linux mailing list ***************************************************************************/ /* JPEG DHT Segment for YCrCb omitted from MJPEG data */ static unsigned char my_jpeg_odml_dht[0x1a4] = { 0xff, 0xc4, 0x01, 0xa2, 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 }; /* * Parse the DHT table. * This code comes from jpeg6b (jdmarker.c). */ static int my_jpeg_load_dht (struct jpeg_decompress_struct *info, unsigned char *dht, JHUFF_TBL *ac_tables[], JHUFF_TBL *dc_tables[]) { unsigned int length = (dht[2] << 8) + dht[3] - 2; unsigned int pos = 4; unsigned int count, i; int index; JHUFF_TBL **hufftbl; unsigned char bits[17]; unsigned char huffval[256]; while (length > 16) { bits[0] = 0; index = dht[pos++]; count = 0; for (i = 1; i <= 16; ++i) { bits[i] = dht[pos++]; count += bits[i]; } length -= 17; if (count > 256 || count > length) return -1; for (i = 0; i < count; ++i) huffval[i] = dht[pos++]; length -= count; if (index & 0x10) { index -= 0x10; hufftbl = &ac_tables[index]; } else hufftbl = &dc_tables[index]; if (index < 0 || index >= NUM_HUFF_TBLS) return -1; if (*hufftbl == NULL) *hufftbl = jpeg_alloc_huff_table ((j_common_ptr)info); if (*hufftbl == NULL) return -1; memcpy ((*hufftbl)->bits, bits, sizeof (*hufftbl)->bits); memcpy ((*hufftbl)->huffval, huffval, sizeof (*hufftbl)->huffval); } if (length != 0) return -1; return 0; } /*************************************************************************** * end of code for supportting MJPEG image files * based on a message of Laurent Pinchart on the video4linux mailing list ***************************************************************************/ bool JpegDecoder::readData( Mat& img ) { bool result = false; int step = (int)img.step; bool color = img.channels() > 1; if( m_state && m_width && m_height ) { jpeg_decompress_struct* cinfo = &((JpegState*)m_state)->cinfo; JpegErrorMgr* jerr = &((JpegState*)m_state)->jerr; JSAMPARRAY buffer = 0; if( setjmp( jerr->setjmp_buffer ) == 0 ) { /* check if this is a mjpeg image format */ if ( cinfo->ac_huff_tbl_ptrs[0] == NULL && cinfo->ac_huff_tbl_ptrs[1] == NULL && cinfo->dc_huff_tbl_ptrs[0] == NULL && cinfo->dc_huff_tbl_ptrs[1] == NULL ) { /* yes, this is a mjpeg image format, so load the correct huffman table */ my_jpeg_load_dht( cinfo, my_jpeg_odml_dht, cinfo->ac_huff_tbl_ptrs, cinfo->dc_huff_tbl_ptrs ); } if( color ) { if( cinfo->num_components != 4 ) { cinfo->out_color_space = JCS_RGB; cinfo->out_color_components = 3; } else { cinfo->out_color_space = JCS_CMYK; cinfo->out_color_components = 4; } } else { if( cinfo->num_components != 4 ) { cinfo->out_color_space = JCS_GRAYSCALE; cinfo->out_color_components = 1; } else { cinfo->out_color_space = JCS_CMYK; cinfo->out_color_components = 4; } } jpeg_start_decompress( cinfo ); buffer = (*cinfo->mem->alloc_sarray)((j_common_ptr)cinfo, JPOOL_IMAGE, m_width*4, 1 ); uchar* data = img.data; for( ; m_height--; data += step ) { jpeg_read_scanlines( cinfo, buffer, 1 ); if( color ) { if( cinfo->out_color_components == 3 ) icvCvt_RGB2BGR_8u_C3R( buffer[0], 0, data, 0, cvSize(m_width,1) ); else icvCvt_CMYK2BGR_8u_C4C3R( buffer[0], 0, data, 0, cvSize(m_width,1) ); } else { if( cinfo->out_color_components == 1 ) memcpy( data, buffer[0], m_width ); else icvCvt_CMYK2Gray_8u_C4C1R( buffer[0], 0, data, 0, cvSize(m_width,1) ); } } result = true; jpeg_finish_decompress( cinfo ); } } close(); return result; } /////////////////////// JpegEncoder /////////////////// struct JpegDestination { struct jpeg_destination_mgr pub; vector *buf, *dst; }; METHODDEF(void) stub(j_compress_ptr) { } METHODDEF(void) term_destination (j_compress_ptr cinfo) { JpegDestination* dest = (JpegDestination*)cinfo->dest; size_t sz = dest->dst->size(), bufsz = dest->buf->size() - dest->pub.free_in_buffer; if( bufsz > 0 ) { dest->dst->resize(sz + bufsz); memcpy( &(*dest->dst)[0] + sz, &(*dest->buf)[0], bufsz); } } METHODDEF(boolean) empty_output_buffer (j_compress_ptr cinfo) { JpegDestination* dest = (JpegDestination*)cinfo->dest; size_t sz = dest->dst->size(), bufsz = dest->buf->size(); dest->dst->resize(sz + bufsz); memcpy( &(*dest->dst)[0] + sz, &(*dest->buf)[0], bufsz); dest->pub.next_output_byte = &(*dest->buf)[0]; dest->pub.free_in_buffer = bufsz; return TRUE; } static void jpeg_buffer_dest(j_compress_ptr cinfo, JpegDestination* destination) { cinfo->dest = &destination->pub; destination->pub.init_destination = stub; destination->pub.empty_output_buffer = empty_output_buffer; destination->pub.term_destination = term_destination; } JpegEncoder::JpegEncoder() { m_description = "JPEG files (*.jpeg;*.jpg;*.jpe)"; m_buf_supported = true; } JpegEncoder::~JpegEncoder() { } ImageEncoder JpegEncoder::newEncoder() const { return new JpegEncoder; } bool JpegEncoder::write( const Mat& img, const vector& params ) { m_last_error.clear(); struct fileWrapper { FILE* f; fileWrapper() : f(0) {} ~fileWrapper() { if(f) fclose(f); } }; bool result = false; fileWrapper fw; int width = img.cols, height = img.rows; vector out_buf(1 << 12); AutoBuffer _buffer; uchar* buffer; struct jpeg_compress_struct cinfo; JpegErrorMgr jerr; JpegDestination dest; jpeg_create_compress(&cinfo); cinfo.err = jpeg_std_error(&jerr.pub); jerr.pub.error_exit = error_exit; if( !m_buf ) { fw.f = fopen( m_filename.c_str(), "wb" ); if( !fw.f ) goto _exit_; jpeg_stdio_dest( &cinfo, fw.f ); } else { dest.dst = m_buf; dest.buf = &out_buf; jpeg_buffer_dest( &cinfo, &dest ); dest.pub.next_output_byte = &out_buf[0]; dest.pub.free_in_buffer = out_buf.size(); } if( setjmp( jerr.setjmp_buffer ) == 0 ) { cinfo.image_width = width; cinfo.image_height = height; int _channels = img.channels(); int channels = _channels > 1 ? 3 : 1; cinfo.input_components = channels; cinfo.in_color_space = channels > 1 ? JCS_RGB : JCS_GRAYSCALE; int quality = 95; for( size_t i = 0; i < params.size(); i += 2 ) { if( params[i] == CV_IMWRITE_JPEG_QUALITY ) { quality = params[i+1]; quality = MIN(MAX(quality, 0), 100); } } jpeg_set_defaults( &cinfo ); jpeg_set_quality( &cinfo, quality, TRUE /* limit to baseline-JPEG values */ ); jpeg_start_compress( &cinfo, TRUE ); if( channels > 1 ) _buffer.allocate(width*channels); buffer = _buffer; for( int y = 0; y < height; y++ ) { uchar *data = img.data + img.step*y, *ptr = data; if( _channels == 3 ) { icvCvt_BGR2RGB_8u_C3R( data, 0, buffer, 0, cvSize(width,1) ); ptr = buffer; } else if( _channels == 4 ) { icvCvt_BGRA2BGR_8u_C4C3R( data, 0, buffer, 0, cvSize(width,1), 2 ); ptr = buffer; } jpeg_write_scanlines( &cinfo, &ptr, 1 ); } jpeg_finish_compress( &cinfo ); result = true; } _exit_: if(!result) { char jmsg_buf[JMSG_LENGTH_MAX]; jerr.pub.format_message((j_common_ptr)&cinfo, jmsg_buf); m_last_error = jmsg_buf; } jpeg_destroy_compress( &cinfo ); return result; } } #endif /* End of file. */