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Diffstat (limited to 'benchmarks/CHStone/jpeg/jfif_read.c')
| -rwxr-xr-x | benchmarks/CHStone/jpeg/jfif_read.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/benchmarks/CHStone/jpeg/jfif_read.c b/benchmarks/CHStone/jpeg/jfif_read.c new file mode 100755 index 0000000..c237344 --- /dev/null +++ b/benchmarks/CHStone/jpeg/jfif_read.c @@ -0,0 +1,109 @@ +/* ++--------------------------------------------------------------------------+ +| CHStone : a suite of benchmark programs for C-based High-Level Synthesis | +| ======================================================================== | +| | +| * Collected and Modified : Y. Hara, H. Tomiyama, S. Honda, | +| H. Takada and K. Ishii | +| Nagoya University, Japan | +| | +| * Remark : | +| 1. This source code is modified to unify the formats of the benchmark | +| programs in CHStone. | +| 2. Test vectors are added for CHStone. | +| 3. If "main_result" is 0 at the end of the program, the program is | +| correctly executed. | +| 4. Please follow the copyright of each benchmark program. | ++--------------------------------------------------------------------------+ +*/ +/* + * Copyright (C) 2008 + * Y. Hara, H. Tomiyama, S. Honda, H. Takada and K. Ishii + * Nagoya University, Japan + * All rights reserved. + * + * Disclaimer of Warranty + * + * These software programs are available to the user without any license fee or + * royalty on an "as is" basis. The authors disclaims any and all warranties, + * whether express, implied, or statuary, including any implied warranties or + * merchantability or of fitness for a particular purpose. In no event shall the + * copyright-holder be liable for any incidental, punitive, or consequential damages + * of any kind whatsoever arising from the use of these programs. This disclaimer + * of warranty extends to the user of these programs and user's customers, employees, + * agents, transferees, successors, and assigns. + * + */ +/* + * Read the header information from buffer in JFIF format and begin decoding + * + * @(#) $Id: jfif_read.c,v 1.2 2003/07/18 10:19:21 honda Exp $ + */ + +/* + * Initialize after reading markers + */ +void +jpeg_init_decompress () +{ + int tmp; + /* + * Get MCU number + */ + p_jinfo_MCUHeight = (p_jinfo_image_height - 1) / 8 + 1; + p_jinfo_MCUWidth = (p_jinfo_image_width - 1) / 8 + 1; + p_jinfo_NumMCU = p_jinfo_MCUHeight * p_jinfo_MCUWidth; + + /* + * Create Huffman Table for decoding + */ + tmp = huff_make_dhuff_tb (&p_jinfo_dc_xhuff_tbl_bits[0][0], + p_jinfo_dc_dhuff_tbl_ml[0], + &p_jinfo_dc_dhuff_tbl_maxcode[0][0], + &p_jinfo_dc_dhuff_tbl_mincode[0][0], + &p_jinfo_dc_dhuff_tbl_valptr[0][0]); + p_jinfo_dc_dhuff_tbl_ml[0] = tmp; + tmp = huff_make_dhuff_tb (&p_jinfo_dc_xhuff_tbl_bits[1][0], + p_jinfo_dc_dhuff_tbl_ml[1], + &p_jinfo_dc_dhuff_tbl_maxcode[1][0], + &p_jinfo_dc_dhuff_tbl_mincode[1][0], + &p_jinfo_dc_dhuff_tbl_valptr[1][0]); + p_jinfo_dc_dhuff_tbl_ml[1] = tmp; + tmp = huff_make_dhuff_tb (&p_jinfo_ac_xhuff_tbl_bits[0][0], + p_jinfo_ac_dhuff_tbl_ml[0], + &p_jinfo_ac_dhuff_tbl_maxcode[0][0], + &p_jinfo_ac_dhuff_tbl_mincode[0][0], + &p_jinfo_ac_dhuff_tbl_valptr[0][0]); + p_jinfo_ac_dhuff_tbl_ml[0] = tmp; + tmp = huff_make_dhuff_tb (&p_jinfo_ac_xhuff_tbl_bits[1][0], + p_jinfo_ac_dhuff_tbl_ml[1], + &p_jinfo_ac_dhuff_tbl_maxcode[1][0], + &p_jinfo_ac_dhuff_tbl_mincode[1][0], + &p_jinfo_ac_dhuff_tbl_valptr[1][0]); + p_jinfo_ac_dhuff_tbl_ml[1] = tmp; +} + + + +void +jpeg_read (unsigned char *read_buf) +{ + + /* + * Read markers + */ + read_markers (read_buf); + + + /* + * Initialize the information used for decoding + */ + jpeg_init_decompress (); + + /* + * Start decoding + */ + decode_start (&OutData_image_width, &OutData_image_height, + &OutData_comp_vpos[0], &OutData_comp_hpos[0]); + +} |