From 930bf01caf3cbcabf97444b3071bcaff28597635 Mon Sep 17 00:00:00 2001 From: Dees_Troy Date: Sat, 10 Aug 2013 22:19:03 +0000 Subject: Remove libjpegtwrp and use CM provided libjpeg --- libjpegtwrp/jddctmgr.c | 335 ------------------------------------------------- 1 file changed, 335 deletions(-) delete mode 100644 libjpegtwrp/jddctmgr.c (limited to 'libjpegtwrp/jddctmgr.c') diff --git a/libjpegtwrp/jddctmgr.c b/libjpegtwrp/jddctmgr.c deleted file mode 100644 index 674bfa75f..000000000 --- a/libjpegtwrp/jddctmgr.c +++ /dev/null @@ -1,335 +0,0 @@ -/* - * jddctmgr.c - * - * Copyright (C) 1994-1996, Thomas G. Lane. - * Copyright (c) 2010, Code Aurora Forum. All rights reserved. - * This file is part of the Independent JPEG Group's software. - * For conditions of distribution and use, see the accompanying README file. - * - * This file contains the inverse-DCT management logic. - * This code selects a particular IDCT implementation to be used, - * and it performs related housekeeping chores. No code in this file - * is executed per IDCT step, only during output pass setup. - * - * Note that the IDCT routines are responsible for performing coefficient - * dequantization as well as the IDCT proper. This module sets up the - * dequantization multiplier table needed by the IDCT routine. - */ - -#define JPEG_INTERNALS -#include "jinclude.h" -#include "jpeglib.h" -#include "jdct.h" /* Private declarations for DCT subsystem */ - -#ifdef ANDROID_ARMV6_IDCT - #undef ANDROID_ARMV6_IDCT - #ifdef __arm__ - #include - #if __ARM_ARCH__ >= 6 - #define ANDROID_ARMV6_IDCT - #else - #warning "ANDROID_ARMV6_IDCT is disabled" - #endif - #endif -#endif - -#ifdef ANDROID_ARMV6_IDCT - -/* Intentionally declare the prototype with arguments of primitive types instead - * of type-defined ones. This will at least generate some warnings if jmorecfg.h - * is changed and becomes incompatible with the assembly code. - */ -extern void armv6_idct(short *coefs, int *quans, unsigned char **rows, int col); - -void jpeg_idct_armv6 (j_decompress_ptr cinfo, jpeg_component_info * compptr, - JCOEFPTR coef_block, - JSAMPARRAY output_buf, JDIMENSION output_col) -{ - IFAST_MULT_TYPE *dct_table = (IFAST_MULT_TYPE *)compptr->dct_table; - armv6_idct(coef_block, dct_table, output_buf, output_col); -} - -#endif - -/* - * The decompressor input side (jdinput.c) saves away the appropriate - * quantization table for each component at the start of the first scan - * involving that component. (This is necessary in order to correctly - * decode files that reuse Q-table slots.) - * When we are ready to make an output pass, the saved Q-table is converted - * to a multiplier table that will actually be used by the IDCT routine. - * The multiplier table contents are IDCT-method-dependent. To support - * application changes in IDCT method between scans, we can remake the - * multiplier tables if necessary. - * In buffered-image mode, the first output pass may occur before any data - * has been seen for some components, and thus before their Q-tables have - * been saved away. To handle this case, multiplier tables are preset - * to zeroes; the result of the IDCT will be a neutral gray level. - */ - - -/* Private subobject for this module */ - -typedef struct { - struct jpeg_inverse_dct pub; /* public fields */ - - /* This array contains the IDCT method code that each multiplier table - * is currently set up for, or -1 if it's not yet set up. - * The actual multiplier tables are pointed to by dct_table in the - * per-component comp_info structures. - */ - int cur_method[MAX_COMPONENTS]; -} my_idct_controller; - -typedef my_idct_controller * my_idct_ptr; - - -/* Allocated multiplier tables: big enough for any supported variant */ - -typedef union { - ISLOW_MULT_TYPE islow_array[DCTSIZE2]; -#ifdef DCT_IFAST_SUPPORTED - IFAST_MULT_TYPE ifast_array[DCTSIZE2]; -#endif -#ifdef DCT_FLOAT_SUPPORTED - FLOAT_MULT_TYPE float_array[DCTSIZE2]; -#endif -} multiplier_table; - - -/* The current scaled-IDCT routines require ISLOW-style multiplier tables, - * so be sure to compile that code if either ISLOW or SCALING is requested. - */ -#ifdef DCT_ISLOW_SUPPORTED -#define PROVIDE_ISLOW_TABLES -#else -#ifdef IDCT_SCALING_SUPPORTED -#define PROVIDE_ISLOW_TABLES -#endif -#endif - - -/* - * Prepare for an output pass. - * Here we select the proper IDCT routine for each component and build - * a matching multiplier table. - */ - -METHODDEF(void) -start_pass (j_decompress_ptr cinfo) -{ - my_idct_ptr idct = (my_idct_ptr) cinfo->idct; - int ci, i; - jpeg_component_info *compptr; - int method = 0; - inverse_DCT_method_ptr method_ptr = NULL; - JQUANT_TBL * qtbl; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Select the proper IDCT routine for this component's scaling */ - switch (compptr->DCT_scaled_size) { -#ifdef IDCT_SCALING_SUPPORTED - case 1: - method_ptr = jpeg_idct_1x1; - method = JDCT_ISLOW; /* jidctred uses islow-style table */ - break; - case 2: - method_ptr = jpeg_idct_2x2; - method = JDCT_ISLOW; /* jidctred uses islow-style table */ - break; - case 4: - method_ptr = jpeg_idct_4x4; - method = JDCT_ISLOW; /* jidctred uses islow-style table */ - break; -#endif - case DCTSIZE: - switch (cinfo->dct_method) { -#ifdef ANDROID_ARMV6_IDCT - case JDCT_ISLOW: - case JDCT_IFAST: - method_ptr = jpeg_idct_armv6; - method = JDCT_IFAST; - break; -#else /* ANDROID_ARMV6_IDCT */ -#ifdef DCT_ISLOW_SUPPORTED - case JDCT_ISLOW: - method_ptr = jpeg_idct_islow; - method = JDCT_ISLOW; - break; -#endif -#ifdef DCT_IFAST_SUPPORTED - case JDCT_IFAST: -#ifdef ANDROID_JPEG_USE_VENUM - /* Use VeNum implementation of jpeg_idct_islow even if fast DCT option is selected */ - method_ptr = jpeg_idct_islow; - method = JDCT_ISLOW; -#else - method_ptr = jpeg_idct_ifast; - method = JDCT_IFAST; -#endif /* ANDROID_JPEG_USE_VENUM */ - break; -#endif -#endif /* ANDROID_ARMV6_IDCT */ -#ifdef DCT_FLOAT_SUPPORTED - case JDCT_FLOAT: - method_ptr = jpeg_idct_float; - method = JDCT_FLOAT; - break; -#endif - default: - ERREXIT(cinfo, JERR_NOT_COMPILED); - break; - } - break; - default: - ERREXIT1(cinfo, JERR_BAD_DCTSIZE, compptr->DCT_scaled_size); - break; - } - idct->pub.inverse_DCT[ci] = method_ptr; - /* Create multiplier table from quant table. - * However, we can skip this if the component is uninteresting - * or if we already built the table. Also, if no quant table - * has yet been saved for the component, we leave the - * multiplier table all-zero; we'll be reading zeroes from the - * coefficient controller's buffer anyway. - */ - if (! compptr->component_needed || idct->cur_method[ci] == method) - continue; - qtbl = compptr->quant_table; - if (qtbl == NULL) /* happens if no data yet for component */ - continue; - idct->cur_method[ci] = method; - switch (method) { -#ifdef PROVIDE_ISLOW_TABLES - case JDCT_ISLOW: - { - /* For LL&M IDCT method, multipliers are equal to raw quantization - * coefficients, but are stored as ints to ensure access efficiency. - */ - ISLOW_MULT_TYPE * ismtbl = (ISLOW_MULT_TYPE *) compptr->dct_table; - for (i = 0; i < DCTSIZE2; i++) { - ismtbl[i] = (ISLOW_MULT_TYPE) qtbl->quantval[i]; - } - } - break; -#endif -#ifdef DCT_IFAST_SUPPORTED - case JDCT_IFAST: - { - /* For AA&N IDCT method, multipliers are equal to quantization - * coefficients scaled by scalefactor[row]*scalefactor[col], where - * scalefactor[0] = 1 - * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 - * For integer operation, the multiplier table is to be scaled by - * IFAST_SCALE_BITS. - */ - IFAST_MULT_TYPE * ifmtbl = (IFAST_MULT_TYPE *) compptr->dct_table; -#ifdef ANDROID_ARMV6_IDCT - /* Precomputed values scaled up by 15 bits. */ - static const unsigned short scales[DCTSIZE2] = { - 32768, 45451, 42813, 38531, 32768, 25746, 17734, 9041, - 45451, 63042, 59384, 53444, 45451, 35710, 24598, 12540, - 42813, 59384, 55938, 50343, 42813, 33638, 23170, 11812, - 38531, 53444, 50343, 45308, 38531, 30274, 20853, 10631, - 32768, 45451, 42813, 38531, 32768, 25746, 17734, 9041, - 25746, 35710, 33638, 30274, 25746, 20228, 13933, 7103, - 17734, 24598, 23170, 20853, 17734, 13933, 9598, 4893, - 9041, 12540, 11812, 10631, 9041, 7103, 4893, 2494, - }; - /* Inverse map of [7, 5, 1, 3, 0, 2, 4, 6]. */ - static const char orders[DCTSIZE] = {4, 2, 5, 3, 6, 1, 7, 0}; - /* Reorder the columns after transposing. */ - for (i = 0; i < DCTSIZE2; ++i) { - int j = ((i & 7) << 3) + orders[i >> 3]; - ifmtbl[j] = (qtbl->quantval[i] * scales[i] + 2) >> 2; - } -#else /* ANDROID_ARMV6_IDCT */ - -#define CONST_BITS 14 - static const INT16 aanscales[DCTSIZE2] = { - /* precomputed values scaled up by 14 bits */ - 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, - 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270, - 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906, - 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315, - 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, - 12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552, - 8867, 12299, 11585, 10426, 8867, 6967, 4799, 2446, - 4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247 - }; - SHIFT_TEMPS - - for (i = 0; i < DCTSIZE2; i++) { - ifmtbl[i] = (IFAST_MULT_TYPE) - DESCALE(MULTIPLY16V16((INT32) qtbl->quantval[i], - (INT32) aanscales[i]), - CONST_BITS-IFAST_SCALE_BITS); - } -#endif /* ANDROID_ARMV6_IDCT */ - } - break; -#endif -#ifdef DCT_FLOAT_SUPPORTED - case JDCT_FLOAT: - { - /* For float AA&N IDCT method, multipliers are equal to quantization - * coefficients scaled by scalefactor[row]*scalefactor[col], where - * scalefactor[0] = 1 - * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 - */ - FLOAT_MULT_TYPE * fmtbl = (FLOAT_MULT_TYPE *) compptr->dct_table; - int row, col; - static const double aanscalefactor[DCTSIZE] = { - 1.0, 1.387039845, 1.306562965, 1.175875602, - 1.0, 0.785694958, 0.541196100, 0.275899379 - }; - - i = 0; - for (row = 0; row < DCTSIZE; row++) { - for (col = 0; col < DCTSIZE; col++) { - fmtbl[i] = (FLOAT_MULT_TYPE) - ((double) qtbl->quantval[i] * - aanscalefactor[row] * aanscalefactor[col]); - i++; - } - } - } - break; -#endif - default: - ERREXIT(cinfo, JERR_NOT_COMPILED); - break; - } - } -} - - -/* - * Initialize IDCT manager. - */ - -GLOBAL(void) -jinit_inverse_dct (j_decompress_ptr cinfo) -{ - my_idct_ptr idct; - int ci; - jpeg_component_info *compptr; - - idct = (my_idct_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_idct_controller)); - cinfo->idct = (struct jpeg_inverse_dct *) idct; - idct->pub.start_pass = start_pass; - - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { - /* Allocate and pre-zero a multiplier table for each component */ - compptr->dct_table = - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(multiplier_table)); - MEMZERO(compptr->dct_table, SIZEOF(multiplier_table)); - /* Mark multiplier table not yet set up for any method */ - idct->cur_method[ci] = -1; - } -} -- cgit v1.2.3