diff options
Diffstat (limited to 'src/lib/libjpeg/jcmainct.c')
-rw-r--r-- | src/lib/libjpeg/jcmainct.c | 318 |
1 files changed, 159 insertions, 159 deletions
diff --git a/src/lib/libjpeg/jcmainct.c b/src/lib/libjpeg/jcmainct.c index b0368223700..2b5a221ea05 100644 --- a/src/lib/libjpeg/jcmainct.c +++ b/src/lib/libjpeg/jcmainct.c @@ -26,24 +26,24 @@ /* Private buffer controller object */ typedef struct { - struct jpeg_c_main_controller pub; /* public fields */ + struct jpeg_c_main_controller pub; /* public fields */ - JDIMENSION cur_iMCU_row; /* number of current iMCU row */ - JDIMENSION rowgroup_ctr; /* counts row groups received in iMCU row */ - boolean suspended; /* remember if we suspended output */ - J_BUF_MODE pass_mode; /* current operating mode */ + JDIMENSION cur_iMCU_row; /* number of current iMCU row */ + JDIMENSION rowgroup_ctr; /* counts row groups received in iMCU row */ + boolean suspended; /* remember if we suspended output */ + J_BUF_MODE pass_mode; /* current operating mode */ - /* If using just a strip buffer, this points to the entire set of buffers - * (we allocate one for each component). In the full-image case, this - * points to the currently accessible strips of the virtual arrays. - */ - JSAMPARRAY buffer[MAX_COMPONENTS]; + /* If using just a strip buffer, this points to the entire set of buffers + * (we allocate one for each component). In the full-image case, this + * points to the currently accessible strips of the virtual arrays. + */ + JSAMPARRAY buffer[MAX_COMPONENTS]; #ifdef FULL_MAIN_BUFFER_SUPPORTED - /* If using full-image storage, this array holds pointers to virtual-array - * control blocks for each component. Unused if not full-image storage. - */ - jvirt_sarray_ptr whole_image[MAX_COMPONENTS]; + /* If using full-image storage, this array holds pointers to virtual-array + * control blocks for each component. Unused if not full-image storage. + */ + jvirt_sarray_ptr whole_image[MAX_COMPONENTS]; #endif } my_main_controller; @@ -53,11 +53,11 @@ typedef my_main_controller * my_main_ptr; /* Forward declarations */ METHODDEF(void) process_data_simple_main JPP((j_compress_ptr cinfo, JSAMPARRAY input_buf, - JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail)); + JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail)); #ifdef FULL_MAIN_BUFFER_SUPPORTED METHODDEF(void) process_data_buffer_main JPP((j_compress_ptr cinfo, JSAMPARRAY input_buf, - JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail)); + JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail)); #endif @@ -68,38 +68,38 @@ 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 mymain = (my_main_ptr) cinfo->main; - /* Do nothing in raw-data mode. */ - if (cinfo->raw_data_in) - return; + /* 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 */ + 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 */ - switch (pass_mode) { - case JBUF_PASS_THRU: + switch (pass_mode) { + case JBUF_PASS_THRU: #ifdef FULL_MAIN_BUFFER_SUPPORTED - if (mymain->whole_image[0] != NULL) - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); + if (mymain->whole_image[0] != NULL) + ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); #endif - mymain->pub.process_data = process_data_simple_main; - break; + mymain->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) - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - mymain->pub.process_data = process_data_buffer_main; - break; + case JBUF_SAVE_SOURCE: + case JBUF_CRANK_DEST: + case JBUF_SAVE_AND_PASS: + if (mymain->whole_image[0] == NULL) + ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); + mymain->pub.process_data = process_data_buffer_main; + break; #endif - default: - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); - break; - } + default: + ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); + break; + } } @@ -111,50 +111,50 @@ start_pass_main (j_compress_ptr cinfo, J_BUF_MODE pass_mode) METHODDEF(void) process_data_simple_main (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, - JDIMENSION in_rows_avail) + JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, + JDIMENSION in_rows_avail) { - my_main_ptr mymain = (my_main_ptr) cinfo->main; + my_main_ptr mymain = (my_main_ptr) cinfo->main; - while (mymain->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) - (*cinfo->prep->pre_process_data) (cinfo, + while (mymain->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) + (*cinfo->prep->pre_process_data) (cinfo, input_buf, in_row_ctr, in_rows_avail, mymain->buffer, &mymain->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) - return; - - /* Send the completed row to the compressor */ - if (! (*cinfo->coef->compress_data) (cinfo, mymain->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 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) + return; + + /* Send the completed row to the compressor */ + if (! (*cinfo->coef->compress_data) (cinfo, mymain->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) { (*in_row_ctr)--; mymain->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) { - (*in_row_ctr)++; - mymain->suspended = FALSE; - } - mymain->rowgroup_ctr = 0; - mymain->cur_iMCU_row++; - } + } + 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) { + (*in_row_ctr)++; + mymain->suspended = FALSE; + } + mymain->rowgroup_ctr = 0; + mymain->cur_iMCU_row++; + } } @@ -167,71 +167,71 @@ process_data_simple_main (j_compress_ptr cinfo, METHODDEF(void) process_data_buffer_main (j_compress_ptr cinfo, - JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, - JDIMENSION in_rows_avail) + JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, + JDIMENSION in_rows_avail) { - my_main_ptr main = (my_main_ptr) cinfo->main; - int ci; - jpeg_component_info *compptr; - boolean writing = (main->pass_mode != JBUF_CRANK_DEST); - - while (main->cur_iMCU_row < cinfo->total_iMCU_rows) { - /* Realign the virtual buffers if at the start of an iMCU row. */ - if (main->rowgroup_ctr == 0) { - for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; - ci++, compptr++) { + my_main_ptr main = (my_main_ptr) cinfo->main; + int ci; + jpeg_component_info *compptr; + boolean writing = (main->pass_mode != JBUF_CRANK_DEST); + + while (main->cur_iMCU_row < cinfo->total_iMCU_rows) { + /* Realign the virtual buffers if at the start of an iMCU row. */ + if (main->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); - } - /* In a read pass, pretend we just read some source data. */ - if (! writing) { + ((j_common_ptr) cinfo, main->whole_image[ci], + main->cur_iMCU_row * (compptr->v_samp_factor * DCTSIZE), + (JDIMENSION) (compptr->v_samp_factor * DCTSIZE), 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; - } - } + } + } - /* If a write pass, read input data until the current iMCU row is full. */ - /* Note: preprocessor will pad if necessary to fill the last iMCU row. */ - if (writing) { - (*cinfo->prep->pre_process_data) (cinfo, + /* If a write pass, read input data until the current iMCU row is full. */ + /* Note: preprocessor will pad if necessary to fill the last iMCU row. */ + if (writing) { + (*cinfo->prep->pre_process_data) (cinfo, input_buf, in_row_ctr, in_rows_avail, main->buffer, &main->rowgroup_ctr, (JDIMENSION) DCTSIZE); - /* Return to application if we need more data to fill the iMCU row. */ - if (main->rowgroup_ctr < DCTSIZE) + /* Return to application if we need more data to fill the iMCU row. */ + if (main->rowgroup_ctr < DCTSIZE) 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)) { + /* 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 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. - */ + * 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) { - (*in_row_ctr)--; - main->suspended = TRUE; + (*in_row_ctr)--; + main->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) { + } + /* We did finish the row. Undo our little suspension hack if a previous + * call suspended; then mark the main buffer empty. + */ + if (main->suspended) { (*in_row_ctr)++; main->suspended = FALSE; - } - } + } + } - /* If get here, we are done with this iMCU row. Mark buffer empty. */ - main->rowgroup_ctr = 0; - main->cur_iMCU_row++; - } + /* If get here, we are done with this iMCU row. Mark buffer empty. */ + main->rowgroup_ctr = 0; + main->cur_iMCU_row++; + } } #endif /* FULL_MAIN_BUFFER_SUPPORTED */ @@ -244,50 +244,50 @@ 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; - int ci; - jpeg_component_info *compptr; + my_main_ptr mymain; + int ci; + jpeg_component_info *compptr; - mymain = (my_main_ptr) - (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, + mymain = (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 = (struct jpeg_c_main_controller *) mymain; + mymain->pub.start_pass = start_pass_main; - /* We don't need to create a buffer in raw-data mode. */ - if (cinfo->raw_data_in) - return; + /* We don't need to create a buffer in raw-data mode. */ + if (cinfo->raw_data_in) + return; - /* Create the buffer. It holds downsampled data, so each component - * may be of a different size. - */ - if (need_full_buffer) { + /* Create the buffer. It holds downsampled data, so each component + * may be of a different size. + */ + if (need_full_buffer) { #ifdef FULL_MAIN_BUFFER_SUPPORTED - /* Allocate a full-image virtual array for each component */ - /* 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) + /* Allocate a full-image virtual array for each component */ + /* 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) ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, - compptr->width_in_blocks * compptr->DCT_h_scaled_size, - (JDIMENSION) jround_up((long) compptr->height_in_blocks, + compptr->width_in_blocks * compptr->DCT_h_scaled_size, + (JDIMENSION) jround_up((long) compptr->height_in_blocks, (long) compptr->v_samp_factor) * DCTSIZE, - (JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size)); - } + (JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size)); + } #else - ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); + ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); #endif - } else { + } else { #ifdef FULL_MAIN_BUFFER_SUPPORTED - mymain->whole_image[0] = NULL; /* flag for no virtual arrays */ + mymain->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) + /* 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) ((j_common_ptr) cinfo, JPOOL_IMAGE, - compptr->width_in_blocks * compptr->DCT_h_scaled_size, - (JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size)); - } - } + compptr->width_in_blocks * compptr->DCT_h_scaled_size, + (JDIMENSION) (compptr->v_samp_factor * compptr->DCT_v_scaled_size)); + } + } } |