| Index: jdinput.c
|
| diff --git a/jdinput.c b/jdinput.c
|
| index e7ba33f7b5ffd3dc3fa00bb3ec19b6be649fd4cc..32a6b424e2dd4443513a5c2de209b6a2581d08a2 100644
|
| --- a/jdinput.c
|
| +++ b/jdinput.c
|
| @@ -4,8 +4,10 @@
|
| * This file was part of the Independent JPEG Group's software:
|
| * Copyright (C) 1991-1997, Thomas G. Lane.
|
| * libjpeg-turbo Modifications:
|
| - * Copyright (C) 2010, D. R. Commander.
|
| - * For conditions of distribution and use, see the accompanying README file.
|
| + * Copyright (C) 2010, 2016, D. R. Commander.
|
| + * Copyright (C) 2015, Google, Inc.
|
| + * For conditions of distribution and use, see the accompanying README.ijg
|
| + * file.
|
| *
|
| * This file contains input control logic for the JPEG decompressor.
|
| * These routines are concerned with controlling the decompressor's input
|
| @@ -24,14 +26,14 @@
|
| typedef struct {
|
| struct jpeg_input_controller pub; /* public fields */
|
|
|
| - boolean inheaders; /* TRUE until first SOS is reached */
|
| + boolean inheaders; /* TRUE until first SOS is reached */
|
| } my_input_controller;
|
|
|
| -typedef my_input_controller * my_inputctl_ptr;
|
| +typedef my_input_controller *my_inputctl_ptr;
|
|
|
|
|
| /* Forward declarations */
|
| -METHODDEF(int) consume_markers JPP((j_decompress_ptr cinfo));
|
| +METHODDEF(int) consume_markers (j_decompress_ptr cinfo);
|
|
|
|
|
| /*
|
| @@ -57,7 +59,7 @@ initial_setup (j_decompress_ptr cinfo)
|
| /* Check that number of components won't exceed internal array sizes */
|
| if (cinfo->num_components > MAX_COMPONENTS)
|
| ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
|
| - MAX_COMPONENTS);
|
| + MAX_COMPONENTS);
|
|
|
| /* Compute maximum sampling factors; check factor validity */
|
| cinfo->max_h_samp_factor = 1;
|
| @@ -65,12 +67,12 @@ initial_setup (j_decompress_ptr cinfo)
|
| for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
|
| ci++, compptr++) {
|
| if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR ||
|
| - compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR)
|
| + compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR)
|
| ERREXIT(cinfo, JERR_BAD_SAMPLING);
|
| cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor,
|
| - compptr->h_samp_factor);
|
| + compptr->h_samp_factor);
|
| cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor,
|
| - compptr->v_samp_factor);
|
| + compptr->v_samp_factor);
|
| }
|
|
|
| #if JPEG_LIB_VERSION >=80
|
| @@ -100,10 +102,15 @@ initial_setup (j_decompress_ptr cinfo)
|
| /* Size in DCT blocks */
|
| compptr->width_in_blocks = (JDIMENSION)
|
| jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,
|
| - (long) (cinfo->max_h_samp_factor * DCTSIZE));
|
| + (long) (cinfo->max_h_samp_factor * DCTSIZE));
|
| compptr->height_in_blocks = (JDIMENSION)
|
| jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,
|
| - (long) (cinfo->max_v_samp_factor * DCTSIZE));
|
| + (long) (cinfo->max_v_samp_factor * DCTSIZE));
|
| + /* Set the first and last MCU columns to decompress from multi-scan images.
|
| + * By default, decompress all of the MCU columns.
|
| + */
|
| + cinfo->master->first_MCU_col[ci] = 0;
|
| + cinfo->master->last_MCU_col[ci] = compptr->width_in_blocks - 1;
|
| /* downsampled_width and downsampled_height will also be overridden by
|
| * jdmaster.c if we are doing full decompression. The transcoder library
|
| * doesn't use these values, but the calling application might.
|
| @@ -111,10 +118,10 @@ initial_setup (j_decompress_ptr cinfo)
|
| /* Size in samples */
|
| compptr->downsampled_width = (JDIMENSION)
|
| jdiv_round_up((long) cinfo->image_width * (long) compptr->h_samp_factor,
|
| - (long) cinfo->max_h_samp_factor);
|
| + (long) cinfo->max_h_samp_factor);
|
| compptr->downsampled_height = (JDIMENSION)
|
| jdiv_round_up((long) cinfo->image_height * (long) compptr->v_samp_factor,
|
| - (long) cinfo->max_v_samp_factor);
|
| + (long) cinfo->max_v_samp_factor);
|
| /* Mark component needed, until color conversion says otherwise */
|
| compptr->component_needed = TRUE;
|
| /* Mark no quantization table yet saved for component */
|
| @@ -124,7 +131,7 @@ initial_setup (j_decompress_ptr cinfo)
|
| /* Compute number of fully interleaved MCU rows. */
|
| cinfo->total_iMCU_rows = (JDIMENSION)
|
| jdiv_round_up((long) cinfo->image_height,
|
| - (long) (cinfo->max_v_samp_factor*DCTSIZE));
|
| + (long) (cinfo->max_v_samp_factor*DCTSIZE));
|
|
|
| /* Decide whether file contains multiple scans */
|
| if (cinfo->comps_in_scan < cinfo->num_components || cinfo->progressive_mode)
|
| @@ -141,16 +148,16 @@ per_scan_setup (j_decompress_ptr cinfo)
|
| {
|
| int ci, mcublks, tmp;
|
| jpeg_component_info *compptr;
|
| -
|
| +
|
| if (cinfo->comps_in_scan == 1) {
|
| -
|
| +
|
| /* Noninterleaved (single-component) scan */
|
| compptr = cinfo->cur_comp_info[0];
|
| -
|
| +
|
| /* Overall image size in MCUs */
|
| cinfo->MCUs_per_row = compptr->width_in_blocks;
|
| cinfo->MCU_rows_in_scan = compptr->height_in_blocks;
|
| -
|
| +
|
| /* For noninterleaved scan, always one block per MCU */
|
| compptr->MCU_width = 1;
|
| compptr->MCU_height = 1;
|
| @@ -163,28 +170,28 @@ per_scan_setup (j_decompress_ptr cinfo)
|
| tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
|
| if (tmp == 0) tmp = compptr->v_samp_factor;
|
| compptr->last_row_height = tmp;
|
| -
|
| +
|
| /* Prepare array describing MCU composition */
|
| cinfo->blocks_in_MCU = 1;
|
| cinfo->MCU_membership[0] = 0;
|
| -
|
| +
|
| } else {
|
| -
|
| +
|
| /* Interleaved (multi-component) scan */
|
| if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN)
|
| ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan,
|
| - MAX_COMPS_IN_SCAN);
|
| -
|
| + MAX_COMPS_IN_SCAN);
|
| +
|
| /* Overall image size in MCUs */
|
| cinfo->MCUs_per_row = (JDIMENSION)
|
| jdiv_round_up((long) cinfo->image_width,
|
| - (long) (cinfo->max_h_samp_factor*DCTSIZE));
|
| + (long) (cinfo->max_h_samp_factor*DCTSIZE));
|
| cinfo->MCU_rows_in_scan = (JDIMENSION)
|
| jdiv_round_up((long) cinfo->image_height,
|
| - (long) (cinfo->max_v_samp_factor*DCTSIZE));
|
| -
|
| + (long) (cinfo->max_v_samp_factor*DCTSIZE));
|
| +
|
| cinfo->blocks_in_MCU = 0;
|
| -
|
| +
|
| for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
|
| compptr = cinfo->cur_comp_info[ci];
|
| /* Sampling factors give # of blocks of component in each MCU */
|
| @@ -202,12 +209,12 @@ per_scan_setup (j_decompress_ptr cinfo)
|
| /* Prepare array describing MCU composition */
|
| mcublks = compptr->MCU_blocks;
|
| if (cinfo->blocks_in_MCU + mcublks > D_MAX_BLOCKS_IN_MCU)
|
| - ERREXIT(cinfo, JERR_BAD_MCU_SIZE);
|
| + ERREXIT(cinfo, JERR_BAD_MCU_SIZE);
|
| while (mcublks-- > 0) {
|
| - cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci;
|
| + cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci;
|
| }
|
| }
|
| -
|
| +
|
| }
|
| }
|
|
|
| @@ -238,7 +245,7 @@ latch_quant_tables (j_decompress_ptr cinfo)
|
| {
|
| int ci, qtblno;
|
| jpeg_component_info *compptr;
|
| - JQUANT_TBL * qtbl;
|
| + JQUANT_TBL *qtbl;
|
|
|
| for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
|
| compptr = cinfo->cur_comp_info[ci];
|
| @@ -248,13 +255,13 @@ latch_quant_tables (j_decompress_ptr cinfo)
|
| /* Make sure specified quantization table is present */
|
| qtblno = compptr->quant_tbl_no;
|
| if (qtblno < 0 || qtblno >= NUM_QUANT_TBLS ||
|
| - cinfo->quant_tbl_ptrs[qtblno] == NULL)
|
| + cinfo->quant_tbl_ptrs[qtblno] == NULL)
|
| ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno);
|
| /* OK, save away the quantization table */
|
| qtbl = (JQUANT_TBL *)
|
| (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
|
| - SIZEOF(JQUANT_TBL));
|
| - MEMCOPY(qtbl, cinfo->quant_tbl_ptrs[qtblno], SIZEOF(JQUANT_TBL));
|
| + sizeof(JQUANT_TBL));
|
| + MEMCOPY(qtbl, cinfo->quant_tbl_ptrs[qtblno], sizeof(JQUANT_TBL));
|
| compptr->quant_table = qtbl;
|
| }
|
| }
|
| @@ -313,31 +320,31 @@ consume_markers (j_decompress_ptr cinfo)
|
| val = (*cinfo->marker->read_markers) (cinfo);
|
|
|
| switch (val) {
|
| - case JPEG_REACHED_SOS: /* Found SOS */
|
| - if (inputctl->inheaders) { /* 1st SOS */
|
| + case JPEG_REACHED_SOS: /* Found SOS */
|
| + if (inputctl->inheaders) { /* 1st SOS */
|
| initial_setup(cinfo);
|
| inputctl->inheaders = FALSE;
|
| /* Note: start_input_pass must be called by jdmaster.c
|
| * before any more input can be consumed. jdapimin.c is
|
| * responsible for enforcing this sequencing.
|
| */
|
| - } else { /* 2nd or later SOS marker */
|
| + } else { /* 2nd or later SOS marker */
|
| if (! inputctl->pub.has_multiple_scans)
|
| - ERREXIT(cinfo, JERR_EOI_EXPECTED); /* Oops, I wasn't expecting this! */
|
| + ERREXIT(cinfo, JERR_EOI_EXPECTED); /* Oops, I wasn't expecting this! */
|
| start_input_pass(cinfo);
|
| }
|
| break;
|
| - case JPEG_REACHED_EOI: /* Found EOI */
|
| + case JPEG_REACHED_EOI: /* Found EOI */
|
| inputctl->pub.eoi_reached = TRUE;
|
| - if (inputctl->inheaders) { /* Tables-only datastream, apparently */
|
| + if (inputctl->inheaders) { /* Tables-only datastream, apparently */
|
| if (cinfo->marker->saw_SOF)
|
| - ERREXIT(cinfo, JERR_SOF_NO_SOS);
|
| + ERREXIT(cinfo, JERR_SOF_NO_SOS);
|
| } else {
|
| /* Prevent infinite loop in coef ctlr's decompress_data routine
|
| * if user set output_scan_number larger than number of scans.
|
| */
|
| if (cinfo->output_scan_number > cinfo->input_scan_number)
|
| - cinfo->output_scan_number = cinfo->input_scan_number;
|
| + cinfo->output_scan_number = cinfo->input_scan_number;
|
| }
|
| break;
|
| case JPEG_SUSPENDED:
|
| @@ -382,7 +389,7 @@ jinit_input_controller (j_decompress_ptr cinfo)
|
| /* Create subobject in permanent pool */
|
| inputctl = (my_inputctl_ptr)
|
| (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
|
| - SIZEOF(my_input_controller));
|
| + sizeof(my_input_controller));
|
| cinfo->inputctl = (struct jpeg_input_controller *) inputctl;
|
| /* Initialize method pointers */
|
| inputctl->pub.consume_input = consume_markers;
|
|
|