diff options
Diffstat (limited to '3rdparty/libjpeg/jcmainct.c')
-rw-r--r-- | 3rdparty/libjpeg/jcmainct.c | 110 |
1 files changed, 57 insertions, 53 deletions
diff --git a/3rdparty/libjpeg/jcmainct.c b/3rdparty/libjpeg/jcmainct.c index 6c8ffdf11fe..39b97902e8f 100644 --- a/3rdparty/libjpeg/jcmainct.c +++ b/3rdparty/libjpeg/jcmainct.c @@ -2,6 +2,7 @@ * jcmainct.c * * Copyright (C) 1994-1996, Thomas G. Lane. + * Modified 2003-2012 by Guido Vollbeding. * This file is part of the Independent JPEG Group's software. * For conditions of distribution and use, see the accompanying README file. * @@ -68,32 +69,32 @@ METHODDEF(void) process_data_buffer_main METHODDEF(void) start_pass_main (j_compress_ptr cinfo, J_BUF_MODE pass_mode) { - my_main_ptr mymain = (my_main_ptr) cinfo->main; + my_main_ptr mainp = (my_main_ptr) cinfo->main; /* Do nothing in raw-data mode. */ if (cinfo->raw_data_in) return; - mymain->cur_iMCU_row = 0; /* initialize counters */ - mymain->rowgroup_ctr = 0; - mymain->suspended = FALSE; - mymain->pass_mode = pass_mode; /* save mode for use by process_data */ + mainp->cur_iMCU_row = 0; /* initialize counters */ + mainp->rowgroup_ctr = 0; + mainp->suspended = FALSE; + mainp->pass_mode = pass_mode; /* save mode for use by process_data */ switch (pass_mode) { case JBUF_PASS_THRU: #ifdef FULL_MAIN_BUFFER_SUPPORTED - if (mymain->whole_image[0] != NULL) + if (mainp->whole_image[0] != NULL) ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); #endif - mymain->pub.process_data = process_data_simple_main; + mainp->pub.process_data = process_data_simple_main; break; #ifdef FULL_MAIN_BUFFER_SUPPORTED case JBUF_SAVE_SOURCE: case JBUF_CRANK_DEST: case JBUF_SAVE_AND_PASS: - if (mymain->whole_image[0] == NULL) + if (mainp->whole_image[0] == NULL) ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - mymain->pub.process_data = process_data_buffer_main; + mainp->pub.process_data = process_data_buffer_main; break; #endif default: @@ -114,46 +115,46 @@ process_data_simple_main (j_compress_ptr cinfo, JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail) { - my_main_ptr mymain = (my_main_ptr) cinfo->main; + my_main_ptr mainp = (my_main_ptr) cinfo->main; - while (mymain->cur_iMCU_row < cinfo->total_iMCU_rows) { + while (mainp->cur_iMCU_row < cinfo->total_iMCU_rows) { /* Read input data if we haven't filled the main buffer yet */ - if (mymain->rowgroup_ctr < (JDIMENSION) cinfo->min_DCT_v_scaled_size) + if (mainp->rowgroup_ctr < (JDIMENSION) cinfo->min_DCT_v_scaled_size) (*cinfo->prep->pre_process_data) (cinfo, input_buf, in_row_ctr, in_rows_avail, - mymain->buffer, &mymain->rowgroup_ctr, + mainp->buffer, &mainp->rowgroup_ctr, (JDIMENSION) cinfo->min_DCT_v_scaled_size); /* If we don't have a full iMCU row buffered, return to application for * more data. Note that preprocessor will always pad to fill the iMCU row * at the bottom of the image. */ - if (mymain->rowgroup_ctr != (JDIMENSION) cinfo->min_DCT_v_scaled_size) + if (mainp->rowgroup_ctr != (JDIMENSION) cinfo->min_DCT_v_scaled_size) return; /* Send the completed row to the compressor */ - if (! (*cinfo->coef->compress_data) (cinfo, mymain->buffer)) { + if (! (*cinfo->coef->compress_data) (cinfo, mainp->buffer)) { /* If compressor did not consume the whole row, then we must need to * suspend processing and return to the application. In this situation * we pretend we didn't yet consume the last input row; otherwise, if * it happened to be the last row of the image, the application would * think we were done. */ - if (! mymain->suspended) { + if (! mainp->suspended) { (*in_row_ctr)--; - mymain->suspended = TRUE; + mainp->suspended = TRUE; } return; } /* We did finish the row. Undo our little suspension hack if a previous * call suspended; then mark the main buffer empty. */ - if (mymain->suspended) { + if (mainp->suspended) { (*in_row_ctr)++; - mymain->suspended = FALSE; + mainp->suspended = FALSE; } - mymain->rowgroup_ctr = 0; - mymain->cur_iMCU_row++; + mainp->rowgroup_ctr = 0; + mainp->cur_iMCU_row++; } } @@ -170,25 +171,27 @@ process_data_buffer_main (j_compress_ptr cinfo, JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail) { - my_main_ptr main = (my_main_ptr) cinfo->main; + my_main_ptr mainp = (my_main_ptr) cinfo->main; int ci; jpeg_component_info *compptr; - boolean writing = (main->pass_mode != JBUF_CRANK_DEST); + boolean writing = (mainp->pass_mode != JBUF_CRANK_DEST); - while (main->cur_iMCU_row < cinfo->total_iMCU_rows) { + while (mainp->cur_iMCU_row < cinfo->total_iMCU_rows) { /* Realign the virtual buffers if at the start of an iMCU row. */ - if (main->rowgroup_ctr == 0) { + if (mainp->rowgroup_ctr == 0) { for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { - main->buffer[ci] = (*cinfo->mem->access_virt_sarray) - ((j_common_ptr) cinfo, main->whole_image[ci], - main->cur_iMCU_row * (compptr->v_samp_factor * DCTSIZE), - (JDIMENSION) (compptr->v_samp_factor * DCTSIZE), writing); + mainp->buffer[ci] = (*cinfo->mem->access_virt_sarray) + ((j_common_ptr) cinfo, mainp->whole_image[ci], mainp->cur_iMCU_row * + ((JDIMENSION) (compptr->v_samp_factor * cinfo->min_DCT_v_scaled_size)), + (JDIMENSION) (compptr->v_samp_factor * cinfo->min_DCT_v_scaled_size), + writing); } /* In a read pass, pretend we just read some source data. */ if (! writing) { - *in_row_ctr += cinfo->max_v_samp_factor * DCTSIZE; - main->rowgroup_ctr = DCTSIZE; + *in_row_ctr += (JDIMENSION) + (cinfo->max_v_samp_factor * cinfo->min_DCT_v_scaled_size); + mainp->rowgroup_ctr = (JDIMENSION) cinfo->min_DCT_v_scaled_size; } } @@ -197,40 +200,40 @@ process_data_buffer_main (j_compress_ptr cinfo, if (writing) { (*cinfo->prep->pre_process_data) (cinfo, input_buf, in_row_ctr, in_rows_avail, - main->buffer, &main->rowgroup_ctr, - (JDIMENSION) DCTSIZE); + mainp->buffer, &mainp->rowgroup_ctr, + (JDIMENSION) cinfo->min_DCT_v_scaled_size); /* Return to application if we need more data to fill the iMCU row. */ - if (main->rowgroup_ctr < DCTSIZE) + if (mainp->rowgroup_ctr < (JDIMENSION) cinfo->min_DCT_v_scaled_size) return; } /* Emit data, unless this is a sink-only pass. */ - if (main->pass_mode != JBUF_SAVE_SOURCE) { - if (! (*cinfo->coef->compress_data) (cinfo, main->buffer)) { + if (mainp->pass_mode != JBUF_SAVE_SOURCE) { + if (! (*cinfo->coef->compress_data) (cinfo, mainp->buffer)) { /* If compressor did not consume the whole row, then we must need to * suspend processing and return to the application. In this situation * we pretend we didn't yet consume the last input row; otherwise, if * it happened to be the last row of the image, the application would * think we were done. */ - if (! main->suspended) { + if (! mainp->suspended) { (*in_row_ctr)--; - main->suspended = TRUE; + mainp->suspended = TRUE; } return; } /* We did finish the row. Undo our little suspension hack if a previous * call suspended; then mark the main buffer empty. */ - if (main->suspended) { + if (mainp->suspended) { (*in_row_ctr)++; - main->suspended = FALSE; + mainp->suspended = FALSE; } } /* If get here, we are done with this iMCU row. Mark buffer empty. */ - main->rowgroup_ctr = 0; - main->cur_iMCU_row++; + mainp->rowgroup_ctr = 0; + mainp->cur_iMCU_row++; } } @@ -244,15 +247,15 @@ process_data_buffer_main (j_compress_ptr cinfo, GLOBAL(void) jinit_c_main_controller (j_compress_ptr cinfo, boolean need_full_buffer) { - my_main_ptr mymain; + my_main_ptr mainp; int ci; jpeg_component_info *compptr; - mymain = (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_c_main_controller *) mymain; - mymain->pub.start_pass = start_pass_main; + cinfo->main = &mainp->pub; + mainp->pub.start_pass = start_pass_main; /* We don't need to create a buffer in raw-data mode. */ if (cinfo->raw_data_in) @@ -267,11 +270,12 @@ jinit_c_main_controller (j_compress_ptr cinfo, boolean need_full_buffer) /* Note we pad the bottom to a multiple of the iMCU height */ for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { - mymain->whole_image[ci] = (*cinfo->mem->request_virt_sarray) + mainp->whole_image[ci] = (*cinfo->mem->request_virt_sarray) ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, - compptr->width_in_blocks * compptr->DCT_h_scaled_size, - (JDIMENSION) jround_up((long) compptr->height_in_blocks, - (long) compptr->v_samp_factor) * DCTSIZE, + compptr->width_in_blocks * ((JDIMENSION) compptr->DCT_h_scaled_size), + ((JDIMENSION) jround_up((long) compptr->height_in_blocks, + (long) compptr->v_samp_factor)) * + ((JDIMENSION) cinfo->min_DCT_v_scaled_size), (JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size)); } #else @@ -279,14 +283,14 @@ jinit_c_main_controller (j_compress_ptr cinfo, boolean need_full_buffer) #endif } else { #ifdef FULL_MAIN_BUFFER_SUPPORTED - mymain->whole_image[0] = NULL; /* flag for no virtual arrays */ + mainp->whole_image[0] = NULL; /* flag for no virtual arrays */ #endif /* Allocate a strip buffer for each component */ for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++) { - mymain->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_h_scaled_size, + compptr->width_in_blocks * ((JDIMENSION) compptr->DCT_h_scaled_size), (JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size)); } } |