diff options
Diffstat (limited to 'jdmainct.c')
| -rw-r--r-- | jdmainct.c | 124 |
1 files changed, 62 insertions, 62 deletions
@@ -159,7 +159,7 @@ alloc_funny_pointers (j_decompress_ptr cinfo) * This is done only once, not once per pass. */ { - my_main_ptr main = (my_main_ptr) cinfo->main; + my_main_ptr mainp = (my_main_ptr) cinfo->main; int ci, rgroup; int M = cinfo->min_DCT_scaled_size; jpeg_component_info *compptr; @@ -168,10 +168,10 @@ alloc_funny_pointers (j_decompress_ptr cinfo) /* Get top-level space for component array pointers. * We alloc both arrays with one call to save a few cycles. */ - main->xbuffer[0] = (JSAMPIMAGE) + mainp->xbuffer[0] = (JSAMPIMAGE) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, cinfo->num_components * 2 * SIZEOF(JSAMPARRAY)); - main->xbuffer[1] = main->xbuffer[0] + cinfo->num_components; + mainp->xbuffer[1] = mainp->xbuffer[0] + cinfo->num_components; for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { @@ -184,9 +184,9 @@ alloc_funny_pointers (j_decompress_ptr cinfo) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, 2 * (rgroup * (M + 4)) * SIZEOF(JSAMPROW)); xbuf += rgroup; /* want one row group at negative offsets */ - main->xbuffer[0][ci] = xbuf; + mainp->xbuffer[0][ci] = xbuf; xbuf += rgroup * (M + 4); - main->xbuffer[1][ci] = xbuf; + mainp->xbuffer[1][ci] = xbuf; } } @@ -194,13 +194,13 @@ alloc_funny_pointers (j_decompress_ptr cinfo) LOCAL(void) make_funny_pointers (j_decompress_ptr cinfo) /* Create the funny pointer lists discussed in the comments above. - * The actual workspace is already allocated (in main->buffer), + * The actual workspace is already allocated (in mainp->buffer), * and the space for the pointer lists is allocated too. * This routine just fills in the curiously ordered lists. * This will be repeated at the beginning of each pass. */ { - my_main_ptr main = (my_main_ptr) cinfo->main; + my_main_ptr mainp = (my_main_ptr) cinfo->main; int ci, i, rgroup; int M = cinfo->min_DCT_scaled_size; jpeg_component_info *compptr; @@ -210,10 +210,10 @@ make_funny_pointers (j_decompress_ptr cinfo) ci++, compptr++) { rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) / cinfo->min_DCT_scaled_size; /* height of a row group of component */ - xbuf0 = main->xbuffer[0][ci]; - xbuf1 = main->xbuffer[1][ci]; + xbuf0 = mainp->xbuffer[0][ci]; + xbuf1 = mainp->xbuffer[1][ci]; /* First copy the workspace pointers as-is */ - buf = main->buffer[ci]; + buf = mainp->buffer[ci]; for (i = 0; i < rgroup * (M + 2); i++) { xbuf0[i] = xbuf1[i] = buf[i]; } @@ -240,7 +240,7 @@ set_wraparound_pointers (j_decompress_ptr cinfo) * This changes the pointer list state from top-of-image to the normal state. */ { - my_main_ptr main = (my_main_ptr) cinfo->main; + my_main_ptr mainp = (my_main_ptr) cinfo->main; int ci, i, rgroup; int M = cinfo->min_DCT_scaled_size; jpeg_component_info *compptr; @@ -250,8 +250,8 @@ set_wraparound_pointers (j_decompress_ptr cinfo) ci++, compptr++) { rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) / cinfo->min_DCT_scaled_size; /* height of a row group of component */ - xbuf0 = main->xbuffer[0][ci]; - xbuf1 = main->xbuffer[1][ci]; + xbuf0 = mainp->xbuffer[0][ci]; + xbuf1 = mainp->xbuffer[1][ci]; for (i = 0; i < rgroup; i++) { xbuf0[i - rgroup] = xbuf0[rgroup*(M+1) + i]; xbuf1[i - rgroup] = xbuf1[rgroup*(M+1) + i]; @@ -269,7 +269,7 @@ set_bottom_pointers (j_decompress_ptr cinfo) * Also sets rowgroups_avail to indicate number of nondummy row groups in row. */ { - my_main_ptr main = (my_main_ptr) cinfo->main; + my_main_ptr mainp = (my_main_ptr) cinfo->main; int ci, i, rgroup, iMCUheight, rows_left; jpeg_component_info *compptr; JSAMPARRAY xbuf; @@ -286,12 +286,12 @@ set_bottom_pointers (j_decompress_ptr cinfo) * so we need only do it once. */ if (ci == 0) { - main->rowgroups_avail = (JDIMENSION) ((rows_left-1) / rgroup + 1); + mainp->rowgroups_avail = (JDIMENSION) ((rows_left-1) / rgroup + 1); } /* Duplicate the last real sample row rgroup*2 times; this pads out the * last partial rowgroup and ensures at least one full rowgroup of context. */ - xbuf = main->xbuffer[main->whichptr][ci]; + xbuf = mainp->xbuffer[mainp->whichptr][ci]; for (i = 0; i < rgroup * 2; i++) { xbuf[rows_left + i] = xbuf[rows_left-1]; } @@ -306,27 +306,27 @@ set_bottom_pointers (j_decompress_ptr cinfo) METHODDEF(void) start_pass_main (j_decompress_ptr cinfo, J_BUF_MODE pass_mode) { - my_main_ptr main = (my_main_ptr) cinfo->main; + my_main_ptr mainp = (my_main_ptr) cinfo->main; switch (pass_mode) { case JBUF_PASS_THRU: if (cinfo->upsample->need_context_rows) { - main->pub.process_data = process_data_context_main; + mainp->pub.process_data = process_data_context_main; make_funny_pointers(cinfo); /* Create the xbuffer[] lists */ - main->whichptr = 0; /* Read first iMCU row into xbuffer[0] */ - main->context_state = CTX_PREPARE_FOR_IMCU; - main->iMCU_row_ctr = 0; + mainp->whichptr = 0; /* Read first iMCU row into xbuffer[0] */ + mainp->context_state = CTX_PREPARE_FOR_IMCU; + mainp->iMCU_row_ctr = 0; } else { /* Simple case with no context needed */ - main->pub.process_data = process_data_simple_main; + mainp->pub.process_data = process_data_simple_main; } - main->buffer_full = FALSE; /* Mark buffer empty */ - main->rowgroup_ctr = 0; + mainp->buffer_full = FALSE; /* Mark buffer empty */ + mainp->rowgroup_ctr = 0; break; #ifdef QUANT_2PASS_SUPPORTED case JBUF_CRANK_DEST: /* For last pass of 2-pass quantization, just crank the postprocessor */ - main->pub.process_data = process_data_crank_post; + mainp->pub.process_data = process_data_crank_post; break; #endif default: @@ -346,14 +346,14 @@ process_data_simple_main (j_decompress_ptr cinfo, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail) { - my_main_ptr main = (my_main_ptr) cinfo->main; + my_main_ptr mainp = (my_main_ptr) cinfo->main; JDIMENSION rowgroups_avail; /* Read input data if we haven't filled the main buffer yet */ - if (! main->buffer_full) { - if (! (*cinfo->coef->decompress_data) (cinfo, main->buffer)) + if (! mainp->buffer_full) { + if (! (*cinfo->coef->decompress_data) (cinfo, mainp->buffer)) return; /* suspension forced, can do nothing more */ - main->buffer_full = TRUE; /* OK, we have an iMCU row to work with */ + mainp->buffer_full = TRUE; /* OK, we have an iMCU row to work with */ } /* There are always min_DCT_scaled_size row groups in an iMCU row. */ @@ -364,14 +364,14 @@ process_data_simple_main (j_decompress_ptr cinfo, */ /* Feed the postprocessor */ - (*cinfo->post->post_process_data) (cinfo, main->buffer, - &main->rowgroup_ctr, rowgroups_avail, + (*cinfo->post->post_process_data) (cinfo, mainp->buffer, + &mainp->rowgroup_ctr, rowgroups_avail, output_buf, out_row_ctr, out_rows_avail); /* Has postprocessor consumed all the data yet? If so, mark buffer empty */ - if (main->rowgroup_ctr >= rowgroups_avail) { - main->buffer_full = FALSE; - main->rowgroup_ctr = 0; + if (mainp->rowgroup_ctr >= rowgroups_avail) { + mainp->buffer_full = FALSE; + mainp->rowgroup_ctr = 0; } } @@ -386,15 +386,15 @@ process_data_context_main (j_decompress_ptr cinfo, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail) { - my_main_ptr main = (my_main_ptr) cinfo->main; + my_main_ptr mainp = (my_main_ptr) cinfo->main; /* Read input data if we haven't filled the main buffer yet */ - if (! main->buffer_full) { + if (! mainp->buffer_full) { if (! (*cinfo->coef->decompress_data) (cinfo, - main->xbuffer[main->whichptr])) + mainp->xbuffer[mainp->whichptr])) return; /* suspension forced, can do nothing more */ - main->buffer_full = TRUE; /* OK, we have an iMCU row to work with */ - main->iMCU_row_ctr++; /* count rows received */ + mainp->buffer_full = TRUE; /* OK, we have an iMCU row to work with */ + mainp->iMCU_row_ctr++; /* count rows received */ } /* Postprocessor typically will not swallow all the input data it is handed @@ -402,47 +402,47 @@ process_data_context_main (j_decompress_ptr cinfo, * to exit and restart. This switch lets us keep track of how far we got. * Note that each case falls through to the next on successful completion. */ - switch (main->context_state) { + switch (mainp->context_state) { case CTX_POSTPONED_ROW: /* Call postprocessor using previously set pointers for postponed row */ - (*cinfo->post->post_process_data) (cinfo, main->xbuffer[main->whichptr], - &main->rowgroup_ctr, main->rowgroups_avail, + (*cinfo->post->post_process_data) (cinfo, mainp->xbuffer[mainp->whichptr], + &mainp->rowgroup_ctr, mainp->rowgroups_avail, output_buf, out_row_ctr, out_rows_avail); - if (main->rowgroup_ctr < main->rowgroups_avail) + if (mainp->rowgroup_ctr < mainp->rowgroups_avail) return; /* Need to suspend */ - main->context_state = CTX_PREPARE_FOR_IMCU; + mainp->context_state = CTX_PREPARE_FOR_IMCU; if (*out_row_ctr >= out_rows_avail) return; /* Postprocessor exactly filled output buf */ /*FALLTHROUGH*/ case CTX_PREPARE_FOR_IMCU: /* Prepare to process first M-1 row groups of this iMCU row */ - main->rowgroup_ctr = 0; - main->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_scaled_size - 1); + mainp->rowgroup_ctr = 0; + mainp->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_scaled_size - 1); /* Check for bottom of image: if so, tweak pointers to "duplicate" * the last sample row, and adjust rowgroups_avail to ignore padding rows. */ - if (main->iMCU_row_ctr == cinfo->total_iMCU_rows) + if (mainp->iMCU_row_ctr == cinfo->total_iMCU_rows) set_bottom_pointers(cinfo); - main->context_state = CTX_PROCESS_IMCU; + mainp->context_state = CTX_PROCESS_IMCU; /*FALLTHROUGH*/ case CTX_PROCESS_IMCU: /* Call postprocessor using previously set pointers */ - (*cinfo->post->post_process_data) (cinfo, main->xbuffer[main->whichptr], - &main->rowgroup_ctr, main->rowgroups_avail, + (*cinfo->post->post_process_data) (cinfo, mainp->xbuffer[mainp->whichptr], + &mainp->rowgroup_ctr, mainp->rowgroups_avail, output_buf, out_row_ctr, out_rows_avail); - if (main->rowgroup_ctr < main->rowgroups_avail) + if (mainp->rowgroup_ctr < mainp->rowgroups_avail) return; /* Need to suspend */ /* After the first iMCU, change wraparound pointers to normal state */ - if (main->iMCU_row_ctr == 1) + if (mainp->iMCU_row_ctr == 1) set_wraparound_pointers(cinfo); /* Prepare to load new iMCU row using other xbuffer list */ - main->whichptr ^= 1; /* 0=>1 or 1=>0 */ - main->buffer_full = FALSE; + mainp->whichptr ^= 1; /* 0=>1 or 1=>0 */ + mainp->buffer_full = FALSE; /* Still need to process last row group of this iMCU row, */ /* which is saved at index M+1 of the other xbuffer */ - main->rowgroup_ctr = (JDIMENSION) (cinfo->min_DCT_scaled_size + 1); - main->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_scaled_size + 2); - main->context_state = CTX_POSTPONED_ROW; + mainp->rowgroup_ctr = (JDIMENSION) (cinfo->min_DCT_scaled_size + 1); + mainp->rowgroups_avail = (JDIMENSION) (cinfo->min_DCT_scaled_size + 2); + mainp->context_state = CTX_POSTPONED_ROW; } } @@ -475,15 +475,15 @@ process_data_crank_post (j_decompress_ptr cinfo, GLOBAL(void) jinit_d_main_controller (j_decompress_ptr cinfo, boolean need_full_buffer) { - my_main_ptr main; + my_main_ptr mainp; int ci, rgroup, ngroups; jpeg_component_info *compptr; - main = (my_main_ptr) + mainp = (my_main_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, SIZEOF(my_main_controller)); - cinfo->main = (struct jpeg_d_main_controller *) main; - main->pub.start_pass = start_pass_main; + cinfo->main = (struct jpeg_d_main_controller *) mainp; + mainp->pub.start_pass = start_pass_main; if (need_full_buffer) /* shouldn't happen */ ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); @@ -504,7 +504,7 @@ jinit_d_main_controller (j_decompress_ptr cinfo, boolean need_full_buffer) ci++, compptr++) { rgroup = (compptr->v_samp_factor * compptr->DCT_scaled_size) / cinfo->min_DCT_scaled_size; /* height of a row group of component */ - main->buffer[ci] = (*cinfo->mem->alloc_sarray) + mainp->buffer[ci] = (*cinfo->mem->alloc_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, compptr->width_in_blocks * compptr->DCT_scaled_size, (JDIMENSION) (rgroup * ngroups)); |