* Copyright (C) 1994-1997, Thomas G. Lane.
* It was modified by The libjpeg-turbo Project to include only code and
* information relevant to libjpeg-turbo.
- * For conditions of distribution and use, see the accompanying README file.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * file.
*
* This file contains the coefficient buffer controller for compression.
* This controller is the top level of the JPEG compressor proper.
jvirt_barray_ptr whole_image[MAX_COMPONENTS];
} my_coef_controller;
-typedef my_coef_controller * my_coef_ptr;
+typedef my_coef_controller *my_coef_ptr;
/* Forward declarations */
-METHODDEF(boolean) compress_data
- (j_compress_ptr cinfo, JSAMPIMAGE input_buf);
+METHODDEF(boolean) compress_data(j_compress_ptr cinfo, JSAMPIMAGE input_buf);
#ifdef FULL_COEF_BUFFER_SUPPORTED
-METHODDEF(boolean) compress_first_pass
- (j_compress_ptr cinfo, JSAMPIMAGE input_buf);
-METHODDEF(boolean) compress_output
- (j_compress_ptr cinfo, JSAMPIMAGE input_buf);
+METHODDEF(boolean) compress_first_pass(j_compress_ptr cinfo,
+ JSAMPIMAGE input_buf);
+METHODDEF(boolean) compress_output(j_compress_ptr cinfo, JSAMPIMAGE input_buf);
#endif
LOCAL(void)
-start_iMCU_row (j_compress_ptr cinfo)
+start_iMCU_row(j_compress_ptr cinfo)
/* Reset within-iMCU-row counters for a new row */
{
- my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
+ my_coef_ptr coef = (my_coef_ptr)cinfo->coef;
/* In an interleaved scan, an MCU row is the same as an iMCU row.
* In a noninterleaved scan, an iMCU row has v_samp_factor MCU rows.
if (cinfo->comps_in_scan > 1) {
coef->MCU_rows_per_iMCU_row = 1;
} else {
- if (coef->iMCU_row_num < (cinfo->total_iMCU_rows-1))
+ if (coef->iMCU_row_num < (cinfo->total_iMCU_rows - 1))
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor;
else
coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->last_row_height;
*/
METHODDEF(void)
-start_pass_coef (j_compress_ptr cinfo, J_BUF_MODE pass_mode)
+start_pass_coef(j_compress_ptr cinfo, J_BUF_MODE pass_mode)
{
- my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
+ my_coef_ptr coef = (my_coef_ptr)cinfo->coef;
coef->iMCU_row_num = 0;
start_iMCU_row(cinfo);
*/
METHODDEF(boolean)
-compress_data (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
+compress_data(j_compress_ptr cinfo, JSAMPIMAGE input_buf)
{
- my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
+ my_coef_ptr coef = (my_coef_ptr)cinfo->coef;
JDIMENSION MCU_col_num; /* index of current MCU within row */
JDIMENSION last_MCU_col = cinfo->MCUs_per_row - 1;
JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;
blkn = 0;
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
- blockcnt = (MCU_col_num < last_MCU_col) ? compptr->MCU_width
- : compptr->last_col_width;
+ blockcnt = (MCU_col_num < last_MCU_col) ? compptr->MCU_width :
+ compptr->last_col_width;
xpos = MCU_col_num * compptr->MCU_sample_width;
ypos = yoffset * DCTSIZE; /* ypos == (yoffset+yindex) * DCTSIZE */
for (yindex = 0; yindex < compptr->MCU_height; yindex++) {
if (coef->iMCU_row_num < last_iMCU_row ||
- yoffset+yindex < compptr->last_row_height) {
+ yoffset + yindex < compptr->last_row_height) {
(*cinfo->fdct->forward_DCT) (cinfo, compptr,
input_buf[compptr->component_index],
coef->MCU_buffer[blkn],
- ypos, xpos, (JDIMENSION) blockcnt);
+ ypos, xpos, (JDIMENSION)blockcnt);
if (blockcnt < compptr->MCU_width) {
/* Create some dummy blocks at the right edge of the image. */
- jzero_far((void *) coef->MCU_buffer[blkn + blockcnt],
+ jzero_far((void *)coef->MCU_buffer[blkn + blockcnt],
(compptr->MCU_width - blockcnt) * sizeof(JBLOCK));
for (bi = blockcnt; bi < compptr->MCU_width; bi++) {
- coef->MCU_buffer[blkn+bi][0][0] = coef->MCU_buffer[blkn+bi-1][0][0];
+ coef->MCU_buffer[blkn + bi][0][0] =
+ coef->MCU_buffer[blkn + bi - 1][0][0];
}
}
} else {
/* Create a row of dummy blocks at the bottom of the image. */
- jzero_far((void *) coef->MCU_buffer[blkn],
+ jzero_far((void *)coef->MCU_buffer[blkn],
compptr->MCU_width * sizeof(JBLOCK));
for (bi = 0; bi < compptr->MCU_width; bi++) {
- coef->MCU_buffer[blkn+bi][0][0] = coef->MCU_buffer[blkn-1][0][0];
+ coef->MCU_buffer[blkn + bi][0][0] =
+ coef->MCU_buffer[blkn - 1][0][0];
}
}
blkn += compptr->MCU_width;
/* Try to write the MCU. In event of a suspension failure, we will
* re-DCT the MCU on restart (a bit inefficient, could be fixed...)
*/
- if (! (*cinfo->entropy->encode_mcu) (cinfo, coef->MCU_buffer)) {
+ if (!(*cinfo->entropy->encode_mcu) (cinfo, coef->MCU_buffer)) {
/* Suspension forced; update state counters and exit */
coef->MCU_vert_offset = yoffset;
coef->mcu_ctr = MCU_col_num;
*/
METHODDEF(boolean)
-compress_first_pass (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
+compress_first_pass(j_compress_ptr cinfo, JSAMPIMAGE input_buf)
{
- my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
+ my_coef_ptr coef = (my_coef_ptr)cinfo->coef;
JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1;
JDIMENSION blocks_across, MCUs_across, MCUindex;
int bi, ci, h_samp_factor, block_row, block_rows, ndummy;
ci++, compptr++) {
/* Align the virtual buffer for this component. */
buffer = (*cinfo->mem->access_virt_barray)
- ((j_common_ptr) cinfo, coef->whole_image[ci],
+ ((j_common_ptr)cinfo, coef->whole_image[ci],
coef->iMCU_row_num * compptr->v_samp_factor,
- (JDIMENSION) compptr->v_samp_factor, TRUE);
+ (JDIMENSION)compptr->v_samp_factor, TRUE);
/* Count non-dummy DCT block rows in this iMCU row. */
if (coef->iMCU_row_num < last_iMCU_row)
block_rows = compptr->v_samp_factor;
else {
/* NB: can't use last_row_height here, since may not be set! */
- block_rows = (int) (compptr->height_in_blocks % compptr->v_samp_factor);
+ block_rows = (int)(compptr->height_in_blocks % compptr->v_samp_factor);
if (block_rows == 0) block_rows = compptr->v_samp_factor;
}
blocks_across = compptr->width_in_blocks;
h_samp_factor = compptr->h_samp_factor;
/* Count number of dummy blocks to be added at the right margin. */
- ndummy = (int) (blocks_across % h_samp_factor);
+ ndummy = (int)(blocks_across % h_samp_factor);
if (ndummy > 0)
ndummy = h_samp_factor - ndummy;
/* Perform DCT for all non-dummy blocks in this iMCU row. Each call
thisblockrow = buffer[block_row];
(*cinfo->fdct->forward_DCT) (cinfo, compptr,
input_buf[ci], thisblockrow,
- (JDIMENSION) (block_row * DCTSIZE),
- (JDIMENSION) 0, blocks_across);
+ (JDIMENSION)(block_row * DCTSIZE),
+ (JDIMENSION)0, blocks_across);
if (ndummy > 0) {
/* Create dummy blocks at the right edge of the image. */
thisblockrow += blocks_across; /* => first dummy block */
- jzero_far((void *) thisblockrow, ndummy * sizeof(JBLOCK));
+ jzero_far((void *)thisblockrow, ndummy * sizeof(JBLOCK));
lastDC = thisblockrow[-1][0];
for (bi = 0; bi < ndummy; bi++) {
thisblockrow[bi][0] = lastDC;
for (block_row = block_rows; block_row < compptr->v_samp_factor;
block_row++) {
thisblockrow = buffer[block_row];
- lastblockrow = buffer[block_row-1];
- jzero_far((void *) thisblockrow,
- (size_t) (blocks_across * sizeof(JBLOCK)));
+ lastblockrow = buffer[block_row - 1];
+ jzero_far((void *)thisblockrow,
+ (size_t)(blocks_across * sizeof(JBLOCK)));
for (MCUindex = 0; MCUindex < MCUs_across; MCUindex++) {
- lastDC = lastblockrow[h_samp_factor-1][0];
+ lastDC = lastblockrow[h_samp_factor - 1][0];
for (bi = 0; bi < h_samp_factor; bi++) {
thisblockrow[bi][0] = lastDC;
}
*/
METHODDEF(boolean)
-compress_output (j_compress_ptr cinfo, JSAMPIMAGE input_buf)
+compress_output(j_compress_ptr cinfo, JSAMPIMAGE input_buf)
{
- my_coef_ptr coef = (my_coef_ptr) cinfo->coef;
+ my_coef_ptr coef = (my_coef_ptr)cinfo->coef;
JDIMENSION MCU_col_num; /* index of current MCU within row */
int blkn, ci, xindex, yindex, yoffset;
JDIMENSION start_col;
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
buffer[ci] = (*cinfo->mem->access_virt_barray)
- ((j_common_ptr) cinfo, coef->whole_image[compptr->component_index],
+ ((j_common_ptr)cinfo, coef->whole_image[compptr->component_index],
coef->iMCU_row_num * compptr->v_samp_factor,
- (JDIMENSION) compptr->v_samp_factor, FALSE);
+ (JDIMENSION)compptr->v_samp_factor, FALSE);
}
/* Loop to process one whole iMCU row */
compptr = cinfo->cur_comp_info[ci];
start_col = MCU_col_num * compptr->MCU_width;
for (yindex = 0; yindex < compptr->MCU_height; yindex++) {
- buffer_ptr = buffer[ci][yindex+yoffset] + start_col;
+ buffer_ptr = buffer[ci][yindex + yoffset] + start_col;
for (xindex = 0; xindex < compptr->MCU_width; xindex++) {
coef->MCU_buffer[blkn++] = buffer_ptr++;
}
}
}
/* Try to write the MCU. */
- if (! (*cinfo->entropy->encode_mcu) (cinfo, coef->MCU_buffer)) {
+ if (!(*cinfo->entropy->encode_mcu) (cinfo, coef->MCU_buffer)) {
/* Suspension forced; update state counters and exit */
coef->MCU_vert_offset = yoffset;
coef->mcu_ctr = MCU_col_num;
*/
GLOBAL(void)
-jinit_c_coef_controller (j_compress_ptr cinfo, boolean need_full_buffer)
+jinit_c_coef_controller(j_compress_ptr cinfo, boolean need_full_buffer)
{
my_coef_ptr coef;
coef = (my_coef_ptr)
- (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+ (*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE,
sizeof(my_coef_controller));
- cinfo->coef = (struct jpeg_c_coef_controller *) coef;
+ cinfo->coef = (struct jpeg_c_coef_controller *)coef;
coef->pub.start_pass = start_pass_coef;
/* Create the coefficient buffer. */
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
coef->whole_image[ci] = (*cinfo->mem->request_virt_barray)
- ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE,
- (JDIMENSION) jround_up((long) compptr->width_in_blocks,
- (long) compptr->h_samp_factor),
- (JDIMENSION) jround_up((long) compptr->height_in_blocks,
- (long) compptr->v_samp_factor),
- (JDIMENSION) compptr->v_samp_factor);
+ ((j_common_ptr)cinfo, JPOOL_IMAGE, FALSE,
+ (JDIMENSION)jround_up((long)compptr->width_in_blocks,
+ (long)compptr->h_samp_factor),
+ (JDIMENSION)jround_up((long)compptr->height_in_blocks,
+ (long)compptr->v_samp_factor),
+ (JDIMENSION)compptr->v_samp_factor);
}
#else
ERREXIT(cinfo, JERR_BAD_BUFFER_MODE);
int i;
buffer = (JBLOCKROW)
- (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE,
+ (*cinfo->mem->alloc_large) ((j_common_ptr)cinfo, JPOOL_IMAGE,
C_MAX_BLOCKS_IN_MCU * sizeof(JBLOCK));
for (i = 0; i < C_MAX_BLOCKS_IN_MCU; i++) {
coef->MCU_buffer[i] = buffer + i;
projects / platform / upstream / libjpeg-turbo.git / blobdiff