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- /* Copyright (C) 1998, 2000 Aladdin Enterprises. All rights reserved.
-
- This file is part of AFPL Ghostscript.
-
- AFPL Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author or
- distributor accepts any responsibility for the consequences of using it, or
- for whether it serves any particular purpose or works at all, unless he or
- she says so in writing. Refer to the Aladdin Free Public License (the
- "License") for full details.
-
- Every copy of AFPL Ghostscript must include a copy of the License, normally
- in a plain ASCII text file named PUBLIC. The License grants you the right
- to copy, modify and redistribute AFPL Ghostscript, but only under certain
- conditions described in the License. Among other things, the License
- requires that the copyright notice and this notice be preserved on all
- copies.
- */
-
- /*$Id: gxclrast.c,v 1.8 2000/09/19 19:00:35 lpd Exp $ */
- /* Command list interpreter/rasterizer */
- #include "memory_.h"
- #include "gx.h"
- #include "gp.h" /* for gp_fmode_rb */
- #include "gpcheck.h"
- #include "gscdefs.h" /* for image type table */
- #include "gserrors.h"
- #include "gsbitops.h"
- #include "gsparams.h"
- #include "gsstate.h" /* (should only be imager state) */
- #include "gxdcolor.h"
- #include "gxdevice.h"
- #include "gscoord.h" /* requires gsmatrix.h */
- #include "gsdevice.h" /* for gs_deviceinitialmatrix */
- #include "gsiparm4.h"
- #include "gxdevmem.h" /* must precede gxcldev.h */
- #include "gxcldev.h"
- #include "gxclpath.h"
- #include "gxcmap.h"
- #include "gxcolor2.h"
- #include "gxcspace.h" /* for gs_color_space_type */
- #include "gxdhtres.h"
- #include "gxgetbit.h"
- #include "gxpaint.h" /* for gx_fill/stroke_params */
- #include "gxhttile.h"
- #include "gxiparam.h"
- #include "gdevht.h"
- #include "gzpath.h"
- #include "gzcpath.h"
- #include "gzacpath.h"
- #include "stream.h"
- #include "strimpl.h"
-
- extern_gx_device_halftone_list();
- extern_gx_image_type_table();
-
- /* We need color space types for constructing temporary color spaces. */
- extern const gs_color_space_type gs_color_space_type_Indexed;
-
- /* Print a bitmap for tracing */
- #ifdef DEBUG
- private void
- cmd_print_bits(const byte * data, int width, int height, int raster)
- {
- int i, j;
-
- dlprintf3("[L]width=%d, height=%d, raster=%d\n",
- width, height, raster);
- for (i = 0; i < height; i++) {
- const byte *row = data + i * raster;
-
- dlprintf("[L]");
- for (j = 0; j < raster; j++)
- dprintf1(" %02x", row[j]);
- dputc('\n');
- }
- }
- #else
- # define cmd_print_bits(data, width, height, raster) DO_NOTHING
- #endif
-
- /* Get a variable-length integer operand. */
- #define cmd_getw(var, p)\
- BEGIN\
- if ( *p < 0x80 ) var = *p++;\
- else { const byte *_cbp; var = cmd_get_w(p, &_cbp); p = _cbp; }\
- END
- private long
- cmd_get_w(const byte * p, const byte ** rp)
- {
- long val = *p++ & 0x7f;
- int shift = 7;
-
- for (; val += (long)(*p & 0x7f) << shift, *p++ > 0x7f; shift += 7);
- *rp = p;
- return val;
- }
-
- /*
- * Define the structure for keeping track of the command reading buffer.
- *
- * The ptr member is only used for passing the current pointer to, and
- * receiving an updated pointer from, commands implemented as separate
- * procedures: normally it is kept in a register.
- */
- typedef struct command_buf_s {
- byte *data; /* actual buffer, guaranteed aligned */
- uint size;
- const byte *ptr; /* next byte to be read (see above) */
- const byte *limit; /* refill warning point */
- const byte *end; /* byte just beyond valid data */
- stream *s; /* for refilling buffer */
- int end_status;
- } command_buf_t;
-
- /* Set the end of a command buffer. */
- private void
- set_cb_end(command_buf_t *pcb, const byte *end)
- {
- pcb->end = end;
- pcb->limit = pcb->data + (pcb->size - cmd_largest_size + 1);
- if ( pcb->limit > pcb->end )
- pcb->limit = pcb->end;
- }
-
- /* Read more data into a command buffer. */
- private const byte *
- top_up_cbuf(command_buf_t *pcb, const byte *cbp)
- {
- uint nread;
- byte *cb_top = pcb->data + (pcb->end - cbp);
-
- memmove(pcb->data, cbp, pcb->end - cbp);
- nread = pcb->end - cb_top;
- pcb->end_status = sgets(pcb->s, cb_top, nread, &nread);
- if ( nread == 0 ) {
- /* No data for this band at all. */
- *cb_top = cmd_opv_end_run;
- nread = 1;
- }
- set_cb_end(pcb, cb_top + nread);
- process_interrupts();
- return pcb->data;
- }
-
- /* Read data from the command buffer and stream. */
- private const byte *
- cmd_read_data(command_buf_t *pcb, byte *ptr, uint rsize, const byte *cbp)
- {
- if (pcb->end - cbp >= rsize) {
- memcpy(ptr, cbp, rsize);
- return cbp + rsize;
- } else {
- uint cleft = pcb->end - cbp;
- uint rleft = rsize - cleft;
-
- memcpy(ptr, cbp, cleft);
- sgets(pcb->s, ptr + cleft, rleft, &rleft);
- return pcb->end;
- }
- }
- #define cmd_read(ptr, rsize, cbp)\
- cbp = cmd_read_data(&cbuf, ptr, rsize, cbp)
-
- /* Read a fixed-size value from the command buffer. */
- inline private const byte *
- cmd_copy_value(void *pvar, int var_size, const byte *cbp)
- {
- memcpy(pvar, cbp, var_size);
- return cbp + var_size;
- }
- #define cmd_get_value(var, cbp)\
- cbp = cmd_copy_value(&var, sizeof(var), cbp)
-
- /*
- * Render one band to a specified target device. Note that if
- * action == setup, target may be 0.
- */
- private int read_set_tile_size(P2(command_buf_t *pcb, tile_slot *bits));
- private int read_set_bits(P8(command_buf_t *pcb, tile_slot *bits,
- int compress, gx_clist_state *pcls,
- gx_strip_bitmap *tile, tile_slot **pslot,
- gx_device_clist_reader *cdev, gs_memory_t *mem));
- private int read_set_ht_order(P4(command_buf_t *pcb,
- gx_device_halftone **ppdht,
- gx_ht_order **pporder, gs_memory_t *mem));
- private int read_set_ht_data(P7(command_buf_t *pcb, uint *pdata_index,
- gx_ht_order *porder,
- gs_halftone_type halftone_type,
- gs_imager_state *pis,
- gx_device_clist_reader *cdev,
- gs_memory_t *mem));
- private int read_set_misc2(P3(command_buf_t *pcb, gs_imager_state *pis,
- segment_notes *pnotes));
- private int read_set_color_space(P5(command_buf_t *pcb, gs_imager_state *pis,
- const gs_color_space **ppcs,
- gs_color_space *pcolor_space,
- gs_memory_t *mem));
- private int read_begin_image(P3(command_buf_t *pcb, gs_image_common_t *pic,
- const gs_color_space *pcs));
- private int read_put_params(P4(command_buf_t *pcb, gs_imager_state *pis,
- gx_device_clist_reader *cdev,
- gs_memory_t *mem));
-
- private const byte *cmd_read_rect(P3(int, gx_cmd_rect *, const byte *));
- private const byte *cmd_read_matrix(P2(gs_matrix *, const byte *));
- private const byte *cmd_read_short_bits(P6(command_buf_t *pcb, byte *data,
- int width_bytes, int height,
- uint raster, const byte *cbp));
- private int cmd_select_map(P7(cmd_map_index, cmd_map_contents,
- gs_imager_state *, gx_ht_order *, frac **,
- uint *, gs_memory_t *));
- private int cmd_create_dev_ht(P2(gx_device_halftone **, gs_memory_t *));
- private int cmd_resize_halftone(P3(gx_device_halftone **, uint,
- gs_memory_t *));
- private int clist_decode_segment(P7(gx_path *, int, fixed[6],
- gs_fixed_point *, int, int,
- segment_notes));
- private int clist_do_polyfill(P4(gx_device *, gx_path *,
- const gx_drawing_color *,
- gs_logical_operation_t));
-
- int
- clist_playback_band(clist_playback_action playback_action,
- gx_device_clist_reader *cdev, stream *s,
- gx_device *target, int x0, int y0, gs_memory_t * mem)
- {
- /* cbuf must be maximally aligned, but still be a byte *. */
- typedef union { void *p; double d; long l; } aligner_t;
- aligner_t cbuf_storage[cbuf_size / sizeof(aligner_t) + 1];
- command_buf_t cbuf;
- /* data_bits is for short copy_* bits and copy_* compressed, */
- /* must be aligned */
- #define data_bits_size cbuf_size
- byte *data_bits = 0;
- register const byte *cbp;
- int dev_depth = cdev->color_info.depth;
- int dev_depth_bytes = (dev_depth + 7) >> 3;
- gx_device *tdev;
- gx_clist_state state;
- gx_color_index *set_colors;
- tile_slot *state_slot;
- gx_strip_bitmap state_tile; /* parameters for reading tiles */
- tile_slot tile_bits; /* parameters of current tile */
- gs_int_point tile_phase, color_phase;
- gx_path path;
- bool in_path;
- gs_fixed_point ppos;
- gx_clip_path clip_path;
- bool use_clip;
- gx_clip_path *pcpath;
- gx_device_cpath_accum clip_accum;
- gs_fixed_rect target_box;
- struct _cas {
- bool lop_enabled;
- gs_fixed_point fill_adjust;
- } clip_save;
- gs_imager_state imager_state;
- gx_device_color dev_color;
- float dash_pattern[cmd_max_dash];
- gx_fill_params fill_params;
- gx_stroke_params stroke_params;
- gs_halftone_type halftone_type;
- gx_ht_order *porder;
- uint ht_data_index;
- union im_ {
- gs_image_common_t c;
- gs_data_image_t d;
- gs_image1_t i1;
- gs_image4_t i4;
- } image;
- gs_int_rect image_rect;
- gs_color_space color_space; /* only used for indexed spaces */
- const gs_color_space *pcs;
- gx_image_enum_common_t *image_info;
- gx_image_plane_t planes[32];
- uint data_height;
- uint data_size;
- byte *data_on_heap;
- fixed vs[6];
- segment_notes notes;
- int data_x;
- int code = 0;
-
- cbuf.data = (byte *)cbuf_storage;
- cbuf.size = cbuf_size;
- cbuf.s = s;
- cbuf.end_status = 0;
- set_cb_end(&cbuf, cbuf.data + cbuf.size);
- cbp = cbuf.end;
- in: /* Initialize for a new page. */
- tdev = target;
- set_colors = state.colors;
- use_clip = false;
- pcpath = NULL;
- notes = sn_none;
- data_x = 0;
- {
- static const gx_clist_state cls_initial = { cls_initial_values };
-
- state = cls_initial;
- }
- state_tile.id = gx_no_bitmap_id;
- state_tile.shift = state_tile.rep_shift = 0;
- tile_phase.x = color_phase.x = x0;
- tile_phase.y = color_phase.y = y0;
- gx_path_init_local(&path, mem);
- in_path = false;
- /*
- * Initialize the clipping region to the full page.
- * (Since we also initialize use_clip to false, this is arbitrary.)
- */
- {
- gs_fixed_rect cbox;
-
- gx_cpath_init_local(&clip_path, mem);
- cbox.p.x = 0;
- cbox.p.y = 0;
- cbox.q.x = cdev->width;
- cbox.q.y = cdev->height;
- gx_cpath_from_rectangle(&clip_path, &cbox);
- }
- if (target != 0)
- (*dev_proc(target, get_clipping_box))(target, &target_box);
- imager_state = clist_imager_state_initial;
- code = gs_imager_state_initialize(&imager_state, mem);
- if (code < 0)
- goto out;
- imager_state.line_params.dash.pattern = dash_pattern;
- if (tdev != 0)
- gx_set_cmap_procs(&imager_state, tdev);
- gx_imager_setscreenphase(&imager_state, -x0, -y0, gs_color_select_all);
- halftone_type = ht_type_none;
- fill_params.fill_zero_width = false;
- pcs = gs_cspace_DeviceGray(&imager_state);
- color_space.params.indexed.use_proc = 0;
- color_space.params.indexed.lookup.table.size = 0;
- data_bits = gs_alloc_bytes(mem, data_bits_size,
- "clist_playback_band(data_bits)");
- if (data_bits == 0) {
- code = gs_note_error(gs_error_VMerror);
- goto out;
- }
- while (code >= 0) {
- int op;
- int compress, depth, raster;
- byte *source;
- gx_color_index colors[2];
- gx_color_index *pcolor;
- gs_logical_operation_t log_op;
- tile_slot bits; /* parameters for reading bits */
-
- /* Make sure the buffer contains a full command. */
- if (cbp >= cbuf.limit) {
- if (cbuf.end_status < 0) { /* End of file or error. */
- if (cbp == cbuf.end) {
- code = (cbuf.end_status == EOFC ? 0 :
- gs_note_error(gs_error_ioerror));
- break;
- }
- } else {
- cbp = top_up_cbuf(&cbuf, cbp);
- }
- }
- op = *cbp++;
- #ifdef DEBUG
- if (gs_debug_c('L')) {
- const char *const *sub = cmd_sub_op_names[op >> 4];
-
- if (sub)
- dlprintf1("[L]%s:", sub[op & 0xf]);
- else
- dlprintf2("[L]%s %d:", cmd_op_names[op >> 4], op & 0xf);
- }
- #endif
- switch (op >> 4) {
- case cmd_op_misc >> 4:
- switch (op) {
- case cmd_opv_end_run:
- if_debug0('L', "\n");
- continue;
- case cmd_opv_set_tile_size:
- cbuf.ptr = cbp;
- code = read_set_tile_size(&cbuf, &tile_bits);
- cbp = cbuf.ptr;
- if (code < 0)
- goto out;
- continue;
- case cmd_opv_set_tile_phase:
- cmd_getw(state.tile_phase.x, cbp);
- cmd_getw(state.tile_phase.y, cbp);
- if_debug2('L', " (%d,%d)\n",
- state.tile_phase.x,
- state.tile_phase.y);
- goto set_phase;
- case cmd_opv_set_tile_bits:
- bits = tile_bits;
- compress = 0;
- stb:
- cbuf.ptr = cbp;
- code = read_set_bits(&cbuf, &bits, compress,
- &state, &state_tile, &state_slot,
- cdev, mem);
- cbp = cbuf.ptr;
- if (code < 0)
- goto out;
- goto stp;
- case cmd_opv_set_bits:
- compress = *cbp & 3;
- bits.cb_depth = *cbp++ >> 2;
- cmd_getw(bits.width, cbp);
- cmd_getw(bits.height, cbp);
- if_debug4('L', " compress=%d depth=%d size=(%d,%d)",
- compress, bits.cb_depth,
- bits.width, bits.height);
- bits.cb_raster =
- bitmap_raster(bits.width * bits.cb_depth);
- bits.x_reps = bits.y_reps = 1;
- bits.shift = bits.rep_shift = 0;
- goto stb;
- case cmd_opv_set_tile_color:
- set_colors = state.tile_colors;
- if_debug0('L', "\n");
- continue;
- case cmd_opv_set_misc:
- {
- uint cb = *cbp++;
-
- switch (cb >> 6) {
- case cmd_set_misc_lop >> 6:
- cmd_getw(state.lop, cbp);
- state.lop = (state.lop << 6) + (cb & 0x3f);
- if_debug1('L', " lop=0x%x\n", state.lop);
- if (state.lop_enabled)
- imager_state.log_op = state.lop;
- break;
- case cmd_set_misc_data_x >> 6:
- if (cb & 0x20)
- cmd_getw(data_x, cbp);
- else
- data_x = 0;
- data_x = (data_x << 5) + (cb & 0x1f);
- if_debug1('L', " data_x=%d\n", data_x);
- break;
- case cmd_set_misc_map >> 6:
- {
- frac *mdata;
- uint count;
- cmd_map_contents cont =
- (cmd_map_contents)(cb & 0x30) >> 4;
-
- code = cmd_select_map(cb & 0xf, cont,
- &imager_state,
- porder, &mdata,
- &count, mem);
-
- if (code < 0)
- goto out;
- if (cont == cmd_map_other) {
- cmd_read((byte *)mdata, count, cbp);
- #ifdef DEBUG
- if (gs_debug_c('L')) {
- uint i;
-
- for (i = 0; i < count / sizeof(*mdata); ++i)
- dprintf1(" 0x%04x", mdata[i]);
- dputc('\n');
- }
- } else {
- if_debug0('L', " none\n");
- #endif
- }
- }
- /* Recompute the effective transfer, */
- /* in case this was a transfer map. */
- gx_imager_set_effective_xfer(
- &imager_state);
- break;
- case cmd_set_misc_halftone >> 6: {
- uint num_comp;
-
- halftone_type = cb & 0x3f;
- cmd_getw(num_comp, cbp);
- if_debug2('L', " halftone type=%d num_comp=%u\n",
- halftone_type, num_comp);
- code = cmd_resize_halftone(
- &imager_state.dev_ht,
- num_comp, mem);
- if (code < 0)
- goto out;
- break;
- }
- default:
- goto bad_op;
- }
- }
- continue;
- case cmd_opv_enable_lop:
- state.lop_enabled = true;
- imager_state.log_op = state.lop;
- if_debug0('L', "\n");
- continue;
- case cmd_opv_disable_lop:
- state.lop_enabled = false;
- imager_state.log_op = lop_default;
- if_debug0('L', "\n");
- continue;
- case cmd_opv_set_ht_order:
- cbuf.ptr = cbp;
- code = read_set_ht_order(&cbuf, &imager_state.dev_ht,
- &porder, mem);
- cbp = cbuf.ptr;
- if (code < 0)
- goto out;
- ht_data_index = 0;
- /*
- * Free the relevant cache, because its sizes
- * are probably not correct any more.
- */
- {
- gx_ht_cache *pcache = porder->cache;
-
- if (pcache) {
- if (pcache != imager_state.ht_cache)
- gx_ht_free_cache(mem, pcache);
- porder->cache = 0;
- }
- }
- continue;
- case cmd_opv_set_ht_data:
- cbuf.ptr = cbp;
- code = read_set_ht_data(&cbuf, &ht_data_index, porder,
- halftone_type,
- &imager_state, cdev, mem);
- cbp = cbuf.ptr;
- if (code < 0)
- goto out;
- continue;
- case cmd_opv_end_page:
- if_debug0('L', "\n");
- /*
- * Do end-of-page cleanup, then reinitialize if
- * there are more pages to come.
- */
- goto out;
- case cmd_opv_delta2_color0:
- pcolor = &set_colors[0];
- goto delta2_c;
- case cmd_opv_delta2_color1:
- pcolor = &set_colors[1];
- delta2_c:set_colors = state.colors;
- {
- gx_color_index b = ((uint) * cbp << 8) + cbp[1];
-
- cbp += 2;
- if (dev_depth > 24)
- *pcolor +=
- ((b & 0xf000) << 12) + ((b & 0x0f00) << 8) +
- ((b & 0x00f0) << 4) + (b & 0x000f) -
- cmd_delta2_32_bias;
- else
- *pcolor +=
- ((b & 0xf800) << 5) + ((b & 0x07e0) << 3) +
- (b & 0x001f) - cmd_delta2_24_bias;
- }
- if_debug1('L', " 0x%lx\n", *pcolor);
- continue;
- case cmd_opv_set_copy_color:
- state.color_is_alpha = 0;
- if_debug0('L', "\n");
- continue;
- case cmd_opv_set_copy_alpha:
- state.color_is_alpha = 1;
- if_debug0('L', "\n");
- continue;
- default:
- goto bad_op;
- }
- /*NOTREACHED */
- case cmd_op_set_color0 >> 4:
- pcolor = &set_colors[0];
- goto set_color;
- case cmd_op_set_color1 >> 4:
- pcolor = &set_colors[1];
- set_color:set_colors = state.colors;
- switch (op & 0xf) {
- case 0:
- break;
- case 15: /* special handling because this may */
- /* require more bits than depth */
- *pcolor = gx_no_color_index;
- goto setc;
- default:
- switch (dev_depth_bytes) {
- case 4:
- {
- gx_color_index b =
- ((gx_color_index) (op & 0xf) << 8) + *cbp++;
-
- *pcolor +=
- ((b & 07000) << 15) + ((b & 0700) << 10) +
- ((b & 070) << 5) + (b & 7) -
- cmd_delta1_32_bias;
- goto setc;
- }
- case 3:
- {
- gx_color_index b = *cbp++;
-
- *pcolor +=
- ((gx_color_index) (op & 0xf) << 16) +
- ((b & 0xf0) << 4) + (b & 0x0f) -
- cmd_delta1_24_bias;
- goto setc;
- }
- case 2:
- break;
- case 1:
- *pcolor += (gx_color_index) (op & 0xf) - 8;
- goto setc;
- }
- }
- {
- gx_color_index color = 0;
-
- switch (dev_depth_bytes) {
- case 4:
- color |= (gx_color_index) * cbp++ << 24;
- case 3:
- color |= (gx_color_index) * cbp++ << 16;
- case 2:
- color |= (gx_color_index) * cbp++ << 8;
- case 1:
- color |= (gx_color_index) * cbp++;
- }
- *pcolor = color;
- }
- setc:if_debug1('L', " 0x%lx\n", *pcolor);
- continue;
- case cmd_op_fill_rect >> 4:
- case cmd_op_tile_rect >> 4:
- cbp = cmd_read_rect(op, &state.rect, cbp);
- break;
- case cmd_op_fill_rect_short >> 4:
- case cmd_op_tile_rect_short >> 4:
- state.rect.x += *cbp + cmd_min_short;
- state.rect.width += cbp[1] + cmd_min_short;
- if (op & 0xf) {
- state.rect.height += (op & 0xf) + cmd_min_dxy_tiny;
- cbp += 2;
- } else {
- state.rect.y += cbp[2] + cmd_min_short;
- state.rect.height += cbp[3] + cmd_min_short;
- cbp += 4;
- }
- break;
- case cmd_op_fill_rect_tiny >> 4:
- case cmd_op_tile_rect_tiny >> 4:
- if (op & 8)
- state.rect.x += state.rect.width;
- else {
- int txy = *cbp++;
-
- state.rect.x += (txy >> 4) + cmd_min_dxy_tiny;
- state.rect.y += (txy & 0xf) + cmd_min_dxy_tiny;
- }
- state.rect.width += (op & 7) + cmd_min_dw_tiny;
- break;
- case cmd_op_copy_mono >> 4:
- depth = 1;
- goto copy;
- case cmd_op_copy_color_alpha >> 4:
- if (state.color_is_alpha) {
- if (!(op & 8))
- depth = *cbp++;
- } else
- depth = dev_depth;
- copy:cmd_getw(state.rect.x, cbp);
- cmd_getw(state.rect.y, cbp);
- if (op & 8) { /* Use the current "tile". */
- #ifdef DEBUG
- if (state_slot->index != state.tile_index) {
- lprintf2("state_slot->index = %d, state.tile_index = %d!\n",
- state_slot->index,
- state.tile_index);
- code = gs_note_error(gs_error_ioerror);
- goto out;
- }
- #endif
- depth = state_slot->cb_depth;
- state.rect.width = state_slot->width;
- state.rect.height = state_slot->height;
- raster = state_slot->cb_raster;
- source = (byte *) (state_slot + 1);
- } else { /* Read width, height, bits. */
- /* depth was set already. */
- uint width_bits, width_bytes;
- uint bytes;
-
- cmd_getw(state.rect.width, cbp);
- cmd_getw(state.rect.height, cbp);
- width_bits = state.rect.width * depth;
- bytes =
- clist_bitmap_bytes(width_bits,
- state.rect.height,
- op & 3, &width_bytes,
- (uint *)&raster);
- /* copy_mono and copy_color/alpha */
- /* ensure that the bits will fit in a single buffer, */
- /* even after decompression if compressed. */
- #ifdef DEBUG
- if (bytes > cbuf_size) {
- lprintf6("bitmap size exceeds buffer! width=%d raster=%d height=%d\n file pos %ld buf pos %d/%d\n",
- state.rect.width, raster,
- state.rect.height,
- stell(s), (int)(cbp - cbuf.data),
- (int)(cbuf.end - cbuf.data));
- code = gs_note_error(gs_error_ioerror);
- goto out;
- }
- #endif
- if (op & 3) { /* Decompress the image data. */
- stream_cursor_read r;
- stream_cursor_write w;
-
- /* We don't know the data length a priori, */
- /* so to be conservative, we read */
- /* the uncompressed size. */
- uint cleft = cbuf.end - cbp;
-
- if (cleft < bytes) {
- uint nread = cbuf_size - cleft;
-
- memmove(cbuf.data, cbp, cleft);
- cbuf.end_status = sgets(s, cbuf.data + cleft, nread, &nread);
- set_cb_end(&cbuf, cbuf.data + cleft + nread);
- cbp = cbuf.data;
- }
- r.ptr = cbp - 1;
- r.limit = cbuf.end - 1;
- w.ptr = data_bits - 1;
- w.limit = w.ptr + data_bits_size;
- switch (op & 3) {
- case cmd_compress_rle:
- {
- stream_RLD_state sstate;
-
- clist_rld_init(&sstate);
- /* The process procedure can't fail. */
- (*s_RLD_template.process)
- ((stream_state *)&sstate, &r, &w, true);
- }
- break;
- case cmd_compress_cfe:
- {
- stream_CFD_state sstate;
-
- clist_cfd_init(&sstate,
- width_bytes << 3 /*state.rect.width */ ,
- state.rect.height, mem);
- /* The process procedure can't fail. */
- (*s_CFD_template.process)
- ((stream_state *)&sstate, &r, &w, true);
- (*s_CFD_template.release)
- ((stream_state *)&sstate);
- }
- break;
- default:
- goto bad_op;
- }
- cbp = r.ptr + 1;
- source = data_bits;
- } else if (state.rect.height > 1 &&
- width_bytes != raster
- ) {
- source = data_bits;
- cbp = cmd_read_short_bits(&cbuf, source, width_bytes,
- state.rect.height,
- raster, cbp);
- } else {
- cmd_read(cbuf.data, bytes, cbp);
- source = cbuf.data;
- }
- #ifdef DEBUG
- if (gs_debug_c('L')) {
- dprintf2(" depth=%d, data_x=%d\n",
- depth, data_x);
- cmd_print_bits(source, state.rect.width,
- state.rect.height, raster);
- }
- #endif
- }
- break;
- case cmd_op_delta_tile_index >> 4:
- state.tile_index += (int)(op & 0xf) - 8;
- goto sti;
- case cmd_op_set_tile_index >> 4:
- state.tile_index =
- ((op & 0xf) << 8) + *cbp++;
- sti:state_slot =
- (tile_slot *) (cdev->chunk.data +
- cdev->tile_table[state.tile_index].offset);
- if_debug2('L', " index=%u offset=%lu\n",
- state.tile_index,
- cdev->tile_table[state.tile_index].offset);
- state_tile.data = (byte *) (state_slot + 1);
- stp:state_tile.size.x = state_slot->width;
- state_tile.size.y = state_slot->height;
- state_tile.raster = state_slot->cb_raster;
- state_tile.rep_width = state_tile.size.x /
- state_slot->x_reps;
- state_tile.rep_height = state_tile.size.y /
- state_slot->y_reps;
- state_tile.rep_shift = state_slot->rep_shift;
- state_tile.shift = state_slot->shift;
- set_phase: /*
- * state.tile_phase is overloaded according to the command
- * to which it will apply:
- * For fill_path, stroke_path, fill_triangle/p'gram,
- * fill_mask, and (mask or CombineWithColor) images,
- * it is pdcolor->phase. For these operations, we
- * precompute the color_phase values.
- * For strip_tile_rectangle and strip_copy_rop,
- * it is the phase arguments of the call, used with
- * state_tile. For these operations, we precompute the
- * tile_phase values.
- *
- * Note that control may get here before one or both of
- * state_tile or dev_ht has been set.
- */
- if (state_tile.size.x)
- tile_phase.x =
- (state.tile_phase.x + x0) % state_tile.size.x;
- if (imager_state.dev_ht && imager_state.dev_ht->lcm_width)
- color_phase.x =
- (state.tile_phase.x + x0) %
- imager_state.dev_ht->lcm_width;
- /*
- * The true tile height for shifted tiles is not
- * size.y: see gxbitmap.h for the computation.
- */
- if (state_tile.size.y) {
- int full_height;
-
- if (state_tile.shift == 0)
- full_height = state_tile.size.y;
- else
- full_height = state_tile.rep_height *
- (state_tile.rep_width /
- igcd(state_tile.rep_shift,
- state_tile.rep_width));
- tile_phase.y =
- (state.tile_phase.y + y0) % full_height;
- }
- if (imager_state.dev_ht && imager_state.dev_ht->lcm_height)
- color_phase.y =
- (state.tile_phase.y + y0) %
- imager_state.dev_ht->lcm_height;
- gx_imager_setscreenphase(&imager_state,
- -(state.tile_phase.x + x0),
- -(state.tile_phase.y + y0),
- gs_color_select_all);
- continue;
- case cmd_op_misc2 >> 4:
- switch (op) {
- case cmd_opv_set_fill_adjust:
- cmd_get_value(imager_state.fill_adjust.x, cbp);
- cmd_get_value(imager_state.fill_adjust.y, cbp);
- if_debug2('L', " (%g,%g)\n",
- fixed2float(imager_state.fill_adjust.x),
- fixed2float(imager_state.fill_adjust.y));
- continue;
- case cmd_opv_set_ctm:
- {
- gs_matrix mat;
-
- cbp = cmd_read_matrix(&mat, cbp);
- mat.tx -= x0;
- mat.ty -= y0;
- gs_imager_setmatrix(&imager_state, &mat);
- if_debug6('L', " [%g %g %g %g %g %g]\n",
- mat.xx, mat.xy, mat.yx, mat.yy,
- mat.tx, mat.ty);
- }
- continue;
- case cmd_opv_set_misc2:
- cbuf.ptr = cbp;
- code = read_set_misc2(&cbuf, &imager_state, ¬es);
- cbp = cbuf.ptr;
- if (code < 0)
- goto out;
- continue;
- case cmd_opv_set_dash:
- {
- int nb = *cbp++;
- int n = nb & 0x3f;
- float dot_length, offset;
-
- cmd_get_value(dot_length, cbp);
- cmd_get_value(offset, cbp);
- memcpy(dash_pattern, cbp, n * sizeof(float));
-
- gx_set_dash(&imager_state.line_params.dash,
- dash_pattern, n, offset,
- NULL);
- gx_set_dash_adapt(&imager_state.line_params.dash,
- (nb & 0x80) != 0);
- gx_set_dot_length(&imager_state.line_params,
- dot_length,
- (nb & 0x40) != 0);
- #ifdef DEBUG
- if (gs_debug_c('L')) {
- int i;
-
- dprintf4(" dot=%g(mode %d) adapt=%d offset=%g [",
- dot_length,
- (nb & 0x40) != 0,
- (nb & 0x80) != 0, offset);
- for (i = 0; i < n; ++i)
- dprintf1("%g ", dash_pattern[i]);
- dputs("]\n");
- }
- #endif
- cbp += n * sizeof(float);
- }
- break;
- case cmd_opv_enable_clip:
- pcpath = (use_clip ? &clip_path : NULL);
- if_debug0('L', "\n");
- break;
- case cmd_opv_disable_clip:
- pcpath = NULL;
- if_debug0('L', "\n");
- break;
- case cmd_opv_begin_clip:
- pcpath = NULL;
- if_debug0('L', "\n");
- code = gx_cpath_reset(&clip_path);
- if (code < 0)
- goto out;
- gx_cpath_accum_begin(&clip_accum, mem);
- gx_cpath_accum_set_cbox(&clip_accum,
- &target_box);
- tdev = (gx_device *)&clip_accum;
- clip_save.lop_enabled = state.lop_enabled;
- clip_save.fill_adjust =
- imager_state.fill_adjust;
- state.lop_enabled = false;
- imager_state.log_op = lop_default;
- imager_state.fill_adjust.x =
- imager_state.fill_adjust.y = fixed_half;
- break;
- case cmd_opv_end_clip:
- if_debug0('L', "\n");
- gx_cpath_accum_end(&clip_accum, &clip_path);
- tdev = target;
- /*
- * If the entire band falls within the clip
- * path, no clipping is needed.
- */
- {
- gs_fixed_rect cbox;
-
- gx_cpath_inner_box(&clip_path, &cbox);
- use_clip =
- !(cbox.p.x <= target_box.p.x &&
- cbox.q.x >= target_box.q.x &&
- cbox.p.y <= target_box.p.y &&
- cbox.q.y >= target_box.q.y);
- }
- pcpath = (use_clip ? &clip_path : NULL);
- state.lop_enabled = clip_save.lop_enabled;
- imager_state.log_op =
- (state.lop_enabled ? state.lop :
- lop_default);
- imager_state.fill_adjust =
- clip_save.fill_adjust;
- break;
- case cmd_opv_set_color_space:
- cbuf.ptr = cbp;
- code = read_set_color_space(&cbuf, &imager_state,
- &pcs, &color_space, mem);
- cbp = cbuf.ptr;
- if (code < 0) {
- if (code == gs_error_rangecheck)
- goto bad_op;
- goto out;
- }
- break;
- case cmd_opv_begin_image_rect:
- cbuf.ptr = cbp;
- code = read_begin_image(&cbuf, &image.c, pcs);
- cbp = cbuf.ptr;
- if (code < 0)
- goto out;
- {
- uint diff;
-
- cmd_getw(image_rect.p.x, cbp);
- cmd_getw(image_rect.p.y, cbp);
- cmd_getw(diff, cbp);
- image_rect.q.x = image.d.Width - diff;
- cmd_getw(diff, cbp);
- image_rect.q.y = image.d.Height - diff;
- if_debug4('L', " rect=(%d,%d),(%d,%d)",
- image_rect.p.x, image_rect.p.y,
- image_rect.q.x, image_rect.q.y);
- }
- goto ibegin;
- case cmd_opv_begin_image:
- cbuf.ptr = cbp;
- code = read_begin_image(&cbuf, &image.c, pcs);
- cbp = cbuf.ptr;
- if (code < 0)
- goto out;
- image_rect.p.x = 0;
- image_rect.p.y = 0;
- image_rect.q.x = image.d.Width;
- image_rect.q.y = image.d.Height;
- if_debug2('L', " size=(%d,%d)",
- image.d.Width, image.d.Height);
- ibegin: if_debug0('L', "\n");
- {
- gx_drawing_color devc;
-
- color_set_pure(&devc, state.colors[1]);
- code = (*dev_proc(tdev, begin_typed_image))
- (tdev, &imager_state, NULL,
- (const gs_image_common_t *)&image,
- &image_rect, &devc, pcpath, mem,
- &image_info);
- }
- if (code < 0)
- goto out;
- break;
- case cmd_opv_image_plane_data:
- cmd_getw(data_height, cbp);
- if (data_height == 0) {
- if_debug0('L', " done image\n");
- code = gx_image_end(image_info, true);
- if (code < 0)
- goto out;
- continue;
- }
- {
- uint flags;
- int plane;
- uint raster;
-
- cmd_getw(flags, cbp);
- for (plane = 0;
- plane < image_info->num_planes;
- ++plane, flags >>= 1
- ) {
- if (flags & 1) {
- if (cbuf.end - cbp <
- 2 * cmd_max_intsize(sizeof(uint)))
- cbp = top_up_cbuf(&cbuf, cbp);
- cmd_getw(planes[plane].raster, cbp);
- if ((raster = planes[plane].raster) != 0)
- cmd_getw(data_x, cbp);
- } else {
- planes[plane].raster = raster;
- }
- planes[plane].data_x = data_x;
- }
- }
- goto idata;
- case cmd_opv_image_data:
- cmd_getw(data_height, cbp);
- if (data_height == 0) {
- if_debug0('L', " done image\n");
- code = gx_image_end(image_info, true);
- if (code < 0)
- goto out;
- continue;
- }
- {
- uint bytes_per_plane;
- int plane;
-
- cmd_getw(bytes_per_plane, cbp);
- if_debug2('L', " height=%u raster=%u\n",
- data_height, bytes_per_plane);
- for (plane = 0;
- plane < image_info->num_planes;
- ++plane
- ) {
- planes[plane].data_x = data_x;
- planes[plane].raster = bytes_per_plane;
- }
- }
- idata: data_size = 0;
- {
- int plane;
-
- for (plane = 0; plane < image_info->num_planes;
- ++plane)
- data_size += planes[plane].raster;
- }
- data_size *= data_height;
- data_on_heap = 0;
- if (cbuf.end - cbp < data_size)
- cbp = top_up_cbuf(&cbuf, cbp);
- if (cbuf.end - cbp >= data_size) {
- planes[0].data = cbp;
- cbp += data_size;
- } else {
- uint cleft = cbuf.end - cbp;
- uint rleft = data_size - cleft;
- byte *rdata;
-
- if (data_size > cbuf.end - cbuf.data) {
- /* Allocate a separate buffer. */
- rdata = data_on_heap =
- gs_alloc_bytes(mem, data_size,
- "clist image_data");
- if (rdata == 0) {
- code = gs_note_error(gs_error_VMerror);
- goto out;
- }
- } else
- rdata = cbuf.data;
- memmove(rdata, cbp, cleft);
- sgets(s, rdata + cleft, rleft,
- &rleft);
- planes[0].data = rdata;
- cbp = cbuf.end; /* force refill */
- }
- {
- int plane;
- const byte *data = planes[0].data;
-
- for (plane = 0;
- plane < image_info->num_planes;
- ++plane
- ) {
- if (planes[plane].raster == 0)
- planes[plane].data = 0;
- else {
- planes[plane].data = data;
- data += planes[plane].raster *
- data_height;
- }
- }
- }
- #ifdef DEBUG
- if (gs_debug_c('L')) {
- int plane;
-
- for (plane = 0; plane < image_info->num_planes;
- ++plane)
- if (planes[plane].data != 0)
- cmd_print_bits(planes[plane].data,
- image_rect.q.x -
- image_rect.p.x,
- data_height,
- planes[plane].raster);
- }
- #endif
- code = gx_image_plane_data(image_info, planes,
- data_height);
- if (data_on_heap)
- gs_free_object(mem, data_on_heap,
- "clist image_data");
- data_x = 0;
- if (code < 0)
- goto out;
- continue;
- case cmd_opv_set_color:
- op = *cbp++;
- #define dcb dev_color.colors.colored.c_base
- #define dcl dev_color.colors.colored.c_level
- dcb[0] = ((op & 0xf) << 1) + (*cbp >> 7);
- dcb[1] = (*cbp >> 2) & 0x1f;
- dcb[2] = ((*cbp & 3) << 3) + (cbp[1] >> 5);
- dcb[3] = cbp[1] & 0x1f;
- cbp += 2;
- goto setcc;
- case cmd_opv_set_color_short:
- op = *cbp++;
- dcb[0] = (op >> 3) & 1;
- dcb[1] = (op >> 2) & 1;
- dcb[2] = (op >> 1) & 1;
- dcb[3] = op & 1;
- setcc: {
- int i;
-
- for (i = 0; i < imager_state.dev_ht->num_comp; ++i)
- if (op & (0x80 >> i))
- cmd_getw(dcl[i], cbp);
- else
- dcl[i] = 0;
- if_debug9('L', " num_comp=%d base=(%u,%u,%u,%u) level=(%u,%u,%u,%u)\n",
- imager_state.dev_ht->num_comp,
- dcb[0], dcb[1], dcb[2], dcb[3],
- dcl[0], dcl[1], dcl[2], dcl[3]);
- color_finish_set_cmyk_halftone(&dev_color,
- imager_state.dev_ht);
- #undef dcb
- #undef dcl
- }
- goto set_phase;
- case cmd_opv_put_params:
- cbuf.ptr = cbp;
- code = read_put_params(&cbuf, &imager_state, cdev,
- mem);
- cbp = cbuf.ptr;
- if (code > 0)
- break; /* empty list */
- if (code < 0)
- goto out;
- if (playback_action == playback_action_setup)
- goto out;
- break;
- default:
- goto bad_op;
- }
- continue;
- case cmd_op_segment >> 4:
- {
- int i, code;
- static const byte op_num_operands[] = {
- cmd_segment_op_num_operands_values
- };
-
- if (!in_path) {
- ppos.x = int2fixed(state.rect.x);
- ppos.y = int2fixed(state.rect.y);
- if_debug2('L', " (%d,%d)", state.rect.x,
- state.rect.y);
- notes = sn_none;
- in_path = true;
- }
- for (i = 0; i < op_num_operands[op & 0xf]; ++i) {
- fixed v;
- int b = *cbp;
-
- switch (b >> 5) {
- case 0:
- case 1:
- vs[i++] =
- ((fixed) ((b ^ 0x20) - 0x20) << 13) +
- ((int)cbp[1] << 5) + (cbp[2] >> 3);
- if_debug1('L', " %g", fixed2float(vs[i - 1]));
- cbp += 2;
- v = (int)((*cbp & 7) ^ 4) - 4;
- break;
- case 2:
- case 3:
- v = (b ^ 0x60) - 0x20;
- break;
- case 4:
- case 5:
- /*
- * Without the following cast, C's
- * brain-damaged coercion rules cause the
- * result to be considered unsigned, and not
- * sign-extended on machines where
- * sizeof(long) > sizeof(int).
- */
- v = (((b ^ 0xa0) - 0x20) << 8) + (int)*++cbp;
- break;
- case 6:
- v = (b ^ 0xd0) - 0x10;
- vs[i] =
- ((v << 8) + cbp[1]) << (_fixed_shift - 2);
- if_debug1('L', " %g", fixed2float(vs[i]));
- cbp += 2;
- continue;
- default /*case 7 */ :
- v = (int)(*++cbp ^ 0x80) - 0x80;
- for (b = 0; b < sizeof(fixed) - 3; ++b)
- v = (v << 8) + *++cbp;
- break;
- }
- cbp += 3;
- /* Absent the cast in the next statement, */
- /* the Borland C++ 4.5 compiler incorrectly */
- /* sign-extends the result of the shift. */
- vs[i] = (v << 16) + (uint) (cbp[-2] << 8) + cbp[-1];
- if_debug1('L', " %g", fixed2float(vs[i]));
- }
- if_debug0('L', "\n");
- code = clist_decode_segment(&path, op, vs, &ppos,
- x0, y0, notes);
- if (code < 0)
- goto out;
- }
- continue;
- case cmd_op_path >> 4:
- {
- gx_device_color devc;
- gx_device_color *pdevc;
- gx_ht_tile ht_tile;
-
- if_debug0('L', "\n");
- switch (op) {
- case cmd_opv_fill:
- fill_params.rule = gx_rule_winding_number;
- goto fill_pure;
- case cmd_opv_eofill:
- fill_params.rule = gx_rule_even_odd;
- fill_pure:color_set_pure(&devc, state.colors[1]);
- pdevc = &devc;
- goto fill;
- case cmd_opv_htfill:
- fill_params.rule = gx_rule_winding_number;
- goto fill_ht;
- case cmd_opv_hteofill:
- fill_params.rule = gx_rule_even_odd;
- fill_ht:ht_tile.tiles = state_tile;
- color_set_binary_tile(&devc,
- state.tile_colors[0],
- state.tile_colors[1],
- &ht_tile);
- pdevc = &devc;
- pdevc->phase = tile_phase;
- goto fill;
- case cmd_opv_colorfill:
- fill_params.rule = gx_rule_winding_number;
- goto fill_color;
- case cmd_opv_coloreofill:
- fill_params.rule = gx_rule_even_odd;
- fill_color:pdevc = &dev_color;
- pdevc->phase = color_phase;
- code =
- gx_color_load(pdevc, &imager_state, tdev);
- if (code < 0)
- break;
- fill:fill_params.adjust = imager_state.fill_adjust;
- fill_params.flatness = imager_state.flatness;
- code = gx_fill_path_only(&path, tdev,
- &imager_state,
- &fill_params,
- pdevc, pcpath);
- break;
- case cmd_opv_stroke:
- color_set_pure(&devc, state.colors[1]);
- pdevc = &devc;
- goto stroke;
- case cmd_opv_htstroke:
- ht_tile.tiles = state_tile;
- color_set_binary_tile(&devc,
- state.tile_colors[0],
- state.tile_colors[1],
- &ht_tile);
- pdevc = &devc;
- pdevc->phase = tile_phase;
- goto stroke;
- case cmd_opv_colorstroke:
- pdevc = &dev_color;
- pdevc->phase = color_phase;
- code =
- gx_color_load(pdevc, &imager_state, tdev);
- if (code < 0)
- break;
- stroke:stroke_params.flatness = imager_state.flatness;
- code = gx_stroke_path_only(&path,
- (gx_path *) 0, tdev,
- &imager_state, &stroke_params,
- pdevc, pcpath);
- break;
- case cmd_opv_polyfill:
- color_set_pure(&devc, state.colors[1]);
- pdevc = &devc;
- goto poly;
- case cmd_opv_htpolyfill:
- ht_tile.tiles = state_tile;
- color_set_binary_tile(&devc,
- state.tile_colors[0],
- state.tile_colors[1],
- &ht_tile);
- pdevc = &devc;
- pdevc->phase = tile_phase;
- goto poly;
- case cmd_opv_colorpolyfill:
- pdevc = &dev_color;
- pdevc->phase = color_phase;
- code = gx_color_load(pdevc, &imager_state, tdev);
- if (code < 0)
- break;
- poly: code = clist_do_polyfill(tdev, &path, pdevc,
- imager_state.log_op);
- break;
- default:
- goto bad_op;
- }
- }
- if (in_path) { /* path might be empty! */
- state.rect.x = fixed2int_var(ppos.x);
- state.rect.y = fixed2int_var(ppos.y);
- in_path = false;
- }
- gx_path_free(&path, "clist_render_band");
- gx_path_init_local(&path, mem);
- if (code < 0)
- goto out;
- continue;
- default:
- bad_op:lprintf5("Bad op %02x band y0 = %d file pos %ld buf pos %d/%d\n",
- op, y0, stell(s), (int)(cbp - cbuf.data), (int)(cbuf.end - cbuf.data));
- {
- const byte *pp;
-
- for (pp = cbuf.data; pp < cbuf.end; pp += 10) {
- dlprintf1("%4d:", (int)(pp - cbuf.data));
- dprintf10(" %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
- pp[0], pp[1], pp[2], pp[3], pp[4],
- pp[5], pp[6], pp[7], pp[8], pp[9]);
- }
- }
- code = gs_note_error(gs_error_Fatal);
- goto out;
- }
- if_debug4('L', " x=%d y=%d w=%d h=%d\n",
- state.rect.x, state.rect.y, state.rect.width,
- state.rect.height);
- switch (op >> 4) {
- case cmd_op_fill_rect >> 4:
- case cmd_op_fill_rect_short >> 4:
- case cmd_op_fill_rect_tiny >> 4:
- if (!state.lop_enabled) {
- code = (*dev_proc(tdev, fill_rectangle))
- (tdev, state.rect.x - x0, state.rect.y - y0,
- state.rect.width, state.rect.height,
- state.colors[1]);
- break;
- }
- source = NULL;
- data_x = 0;
- raster = 0;
- colors[0] = colors[1] = state.colors[1];
- log_op = state.lop;
- pcolor = colors;
- do_rop:code = (*dev_proc(tdev, strip_copy_rop))
- (tdev, source, data_x, raster, gx_no_bitmap_id,
- pcolor, &state_tile,
- (state.tile_colors[0] == gx_no_color_index &&
- state.tile_colors[1] == gx_no_color_index ?
- NULL : state.tile_colors),
- state.rect.x - x0, state.rect.y - y0,
- state.rect.width - data_x, state.rect.height,
- tile_phase.x, tile_phase.y, log_op);
- data_x = 0;
- break;
- case cmd_op_tile_rect >> 4:
- case cmd_op_tile_rect_short >> 4:
- case cmd_op_tile_rect_tiny >> 4:
- /* Currently we don't use lop with tile_rectangle. */
- code = (*dev_proc(tdev, strip_tile_rectangle))
- (tdev, &state_tile,
- state.rect.x - x0, state.rect.y - y0,
- state.rect.width, state.rect.height,
- state.tile_colors[0], state.tile_colors[1],
- tile_phase.x, tile_phase.y);
- break;
- case cmd_op_copy_mono >> 4:
- if (state.lop_enabled) {
- pcolor = state.colors;
- log_op = state.lop;
- goto do_rop;
- }
- if ((op & cmd_copy_use_tile) || pcpath != NULL) { /*
- * This call of copy_mono originated as a call
- * of fill_mask.
- */
- gx_drawing_color dcolor;
- gx_ht_tile ht_tile;
-
- if (op & cmd_copy_ht_color) { /* Screwy C assignment rules don't allow: */
- /* dcolor.colors = state.tile_colors; */
- ht_tile.tiles = state_tile;
- color_set_binary_tile(&dcolor,
- state.tile_colors[0],
- state.tile_colors[1], &ht_tile);
- dcolor.phase = tile_phase;
- } else {
- color_set_pure(&dcolor, state.colors[1]);
- }
- code = (*dev_proc(tdev, fill_mask))
- (tdev, source, data_x, raster, gx_no_bitmap_id,
- state.rect.x - x0, state.rect.y - y0,
- state.rect.width - data_x, state.rect.height,
- &dcolor, 1, imager_state.log_op, pcpath);
- } else
- code = (*dev_proc(tdev, copy_mono))
- (tdev, source, data_x, raster, gx_no_bitmap_id,
- state.rect.x - x0, state.rect.y - y0,
- state.rect.width - data_x, state.rect.height,
- state.colors[0], state.colors[1]);
- data_x = 0;
- break;
- case cmd_op_copy_color_alpha >> 4:
- if (state.color_is_alpha) {
- /****** CAN'T DO ROP WITH ALPHA ******/
- code = (*dev_proc(tdev, copy_alpha))
- (tdev, source, data_x, raster, gx_no_bitmap_id,
- state.rect.x - x0, state.rect.y - y0,
- state.rect.width - data_x, state.rect.height,
- state.colors[1], depth);
- } else {
- if (state.lop_enabled) {
- pcolor = NULL;
- log_op = state.lop;
- goto do_rop;
- }
- code = (*dev_proc(tdev, copy_color))
- (tdev, source, data_x, raster, gx_no_bitmap_id,
- state.rect.x - x0, state.rect.y - y0,
- state.rect.width - data_x, state.rect.height);
- }
- data_x = 0;
- break;
- default: /* can't happen */
- goto bad_op;
- }
- }
- /* Clean up before we exit. */
- out:gx_cpath_free(&clip_path, "clist_render_band exit");
- gx_path_free(&path, "clist_render_band exit");
- gs_imager_state_release(&imager_state);
- if (imager_state.ht_cache)
- gx_ht_free_cache(mem, imager_state.ht_cache);
- gs_free_object(mem, data_bits, "clist_playback_band(data_bits)");
- if (code < 0)
- return_error(code);
- /* Check whether we have more pages to process. */
- if (playback_action != playback_action_setup &&
- (cbp < cbuf.end || !seofp(s))
- )
- goto in;
- return code;
- }
-
- /* ---------------- Individual commands ---------------- */
-
- /*
- * These single-use procedures implement a few large individual commands,
- * primarily for readability but also to avoid overflowing compilers'
- * optimization limits. They all take the command buffer as their first
- * parameter (pcb), assume that the current buffer pointer is in pcb->ptr,
- * and update it there.
- */
-
- private int
- read_set_tile_size(command_buf_t *pcb, tile_slot *bits)
- {
- const byte *cbp = pcb->ptr;
- uint rep_width, rep_height;
- byte bd = *cbp++;
-
- bits->cb_depth = (bd & 31) + 1;
- cmd_getw(rep_width, cbp);
- cmd_getw(rep_height, cbp);
- if (bd & 0x20) {
- cmd_getw(bits->x_reps, cbp);
- bits->width = rep_width * bits->x_reps;
- } else {
- bits->x_reps = 1;
- bits->width = rep_width;
- }
- if (bd & 0x40) {
- cmd_getw(bits->y_reps, cbp);
- bits->height = rep_height * bits->y_reps;
- } else {
- bits->y_reps = 1;
- bits->height = rep_height;
- }
- if (bd & 0x80)
- cmd_getw(bits->rep_shift, cbp);
- else
- bits->rep_shift = 0;
- if_debug6('L', " depth=%d size=(%d,%d), rep_size=(%d,%d), rep_shift=%d\n",
- bits->cb_depth, bits->width,
- bits->height, rep_width,
- rep_height, bits->rep_shift);
- bits->shift =
- (bits->rep_shift == 0 ? 0 :
- (bits->rep_shift * (bits->height / rep_height)) % rep_width);
- bits->cb_raster = bitmap_raster(bits->width * bits->cb_depth);
- pcb->ptr = cbp;
- return 0;
- }
-
- private int
- read_set_bits(command_buf_t *pcb, tile_slot *bits, int compress,
- gx_clist_state *pcls, gx_strip_bitmap *tile, tile_slot **pslot,
- gx_device_clist_reader *cdev, gs_memory_t *mem)
- {
- const byte *cbp = pcb->ptr;
- uint rep_width = bits->width / bits->x_reps;
- uint rep_height = bits->height / bits->y_reps;
- uint index;
- ulong offset;
- uint width_bits = rep_width * bits->cb_depth;
- uint width_bytes;
- uint raster;
- uint bytes =
- clist_bitmap_bytes(width_bits, rep_height,
- compress |
- (rep_width < bits->width ?
- decompress_spread : 0) |
- decompress_elsewhere,
- &width_bytes,
- (uint *)&raster);
- byte *data;
- tile_slot *slot;
-
- cmd_getw(index, cbp);
- cmd_getw(offset, cbp);
- if_debug2('L', " index=%d offset=%lu\n", pcls->tile_index, offset);
- pcls->tile_index = index;
- cdev->tile_table[pcls->tile_index].offset = offset;
- slot = (tile_slot *)(cdev->chunk.data + offset);
- *pslot = slot;
- *slot = *bits;
- tile->data = data = (byte *)(slot + 1);
- #ifdef DEBUG
- slot->index = pcls->tile_index;
- #endif
- if (compress) {
- /*
- * Decompress the image data. We'd like to share this code with the
- * similar code in copy_*, but right now we don't see how.
- */
- stream_cursor_read r;
- stream_cursor_write w;
- /*
- * We don't know the data length a priori, so to be conservative, we
- * read the uncompressed size.
- */
- uint cleft = pcb->end - cbp;
-
- if (cleft < bytes) {
- uint nread = cbuf_size - cleft;
-
- memmove(pcb->data, cbp, cleft);
- pcb->end_status = sgets(pcb->s, pcb->data + cleft, nread, &nread);
- set_cb_end(pcb, pcb->data + cleft + nread);
- cbp = pcb->data;
- }
- r.ptr = cbp - 1;
- r.limit = pcb->end - 1;
- w.ptr = data - 1;
- w.limit = w.ptr + bytes;
- switch (compress) {
- case cmd_compress_rle:
- {
- stream_RLD_state sstate;
-
- clist_rld_init(&sstate);
- (*s_RLD_template.process)
- ((stream_state *)&sstate, &r, &w, true);
- }
- break;
- case cmd_compress_cfe:
- {
- stream_CFD_state sstate;
-
- clist_cfd_init(&sstate,
- width_bytes << 3 /*width_bits */ ,
- rep_height, mem);
- (*s_CFD_template.process)
- ((stream_state *)&sstate, &r, &w, true);
- (*s_CFD_template.release)
- ((stream_state *)&sstate);
- }
- break;
- default:
- return_error(gs_error_unregistered);
- }
- cbp = r.ptr + 1;
- } else if (rep_height > 1 && width_bytes != bits->cb_raster) {
- cbp = cmd_read_short_bits(pcb, data,
- width_bytes, rep_height,
- bits->cb_raster, cbp);
- } else {
- cbp = cmd_read_data(pcb, data, bytes, cbp);
- }
- if (bits->width > rep_width)
- bits_replicate_horizontally(data,
- rep_width * bits->cb_depth, rep_height,
- bits->cb_raster,
- bits->width * bits->cb_depth,
- bits->cb_raster);
- if (bits->height > rep_height)
- bits_replicate_vertically(data,
- rep_height, bits->cb_raster,
- bits->height);
- #ifdef DEBUG
- if (gs_debug_c('L'))
- cmd_print_bits(data, bits->width, bits->height, bits->cb_raster);
- #endif
- pcb->ptr = cbp;
- return 0;
- }
-
- private int
- read_set_ht_order(command_buf_t *pcb, gx_device_halftone **ppdht,
- gx_ht_order **pporder, gs_memory_t *mem)
- {
- const byte *cbp = pcb->ptr;
- gx_ht_order *porder;
- uint old_num_levels;
- uint *levels;
- uint old_num_bits;
- void *bit_data;
- int index;
- gx_ht_order new_order;
- int code = cmd_create_dev_ht(ppdht, mem);
- gx_device_halftone *pdht = *ppdht;
-
- if (code < 0)
- return code;
- cmd_getw(index, cbp);
- if (index == 0)
- porder = &pdht->order;
- else {
- gx_ht_order_component *pcomp = &pdht->components[index - 1];
-
- cmd_getw(pcomp->cname, cbp);
- if_debug1('L', " cname=%lu", (ulong) pcomp->cname);
- porder = &pcomp->corder;
- }
- *pporder = porder;
- new_order = *porder;
- cmd_getw(new_order.width, cbp);
- cmd_getw(new_order.height, cbp);
- cmd_getw(new_order.raster, cbp);
- cmd_getw(new_order.shift, cbp);
- cmd_getw(new_order.num_levels, cbp);
- cmd_getw(new_order.num_bits, cbp);
- new_order.procs = &ht_order_procs_table[*cbp++];
- pcb->ptr = cbp;
- if_debug8('L', " index=%d size=(%d,%d) raster=%d shift=%d num_levels=%d num_bits=%d procs=%d\n",
- index, new_order.width, new_order.height,
- new_order.raster, new_order.shift,
- new_order.num_levels, new_order.num_bits, cbp[-1]);
- if (new_order.data_memory == 0) {
- /* levels and bit_data point into ROM. */
- old_num_levels = 0;
- levels = 0;
- old_num_bits = 0;
- bit_data = 0;
- } else {
- old_num_levels = porder->num_levels;
- levels = porder->levels;
- old_num_bits = porder->num_bits;
- bit_data = porder->bit_data;
- }
- new_order.data_memory = mem;
- /*
- * Note that for resizing a byte array, the element size is 1 byte,
- * not the element size given to alloc_byte_array!
- */
- if (new_order.num_levels > old_num_levels) {
- if (levels == 0)
- levels = (uint *) gs_alloc_byte_array(mem, new_order.num_levels,
- sizeof(*levels),
- "ht order(levels)");
- else
- levels = gs_resize_object(mem, levels,
- new_order.num_levels * sizeof(*levels),
- "ht order(levels)");
- if (levels == 0)
- return_error(gs_error_VMerror);
- /* Update porder in case we bail out. */
- porder->levels = levels;
- porder->num_levels = new_order.num_levels;
- }
- if (new_order.num_bits != old_num_bits ||
- new_order.procs != porder->procs
- ) {
- if (bit_data == 0)
- bit_data = gs_alloc_byte_array(mem, new_order.num_bits,
- new_order.procs->bit_data_elt_size,
- "ht order(bit_data)");
- else
- bit_data = gs_resize_object(mem, bit_data,
- new_order.num_bits *
- new_order.procs->bit_data_elt_size,
- "ht order(bit_data)");
- if (bit_data == 0)
- return_error(gs_error_VMerror);
- }
- *porder = new_order;
- porder->levels = levels;
- porder->bit_data = bit_data;
- porder->full_height = ht_order_full_height(porder);
- return 0;
- }
-
- private int
- read_set_ht_data(command_buf_t *pcb, uint *pdata_index, gx_ht_order *porder,
- gs_halftone_type halftone_type, gs_imager_state *pis,
- gx_device_clist_reader *cdev, gs_memory_t *mem)
- {
- gx_device_halftone *pdht = pis->dev_ht;
- uint elt_size = porder->procs->bit_data_elt_size;
- const byte *cbp = pcb->ptr;
- int n = *cbp++;
-
- if (*pdata_index < porder->num_levels) { /* Setting levels */
- byte *lptr = (byte *)(porder->levels + *pdata_index);
-
- cbp = cmd_read_data(pcb, lptr, n * sizeof(*porder->levels), cbp);
- #ifdef DEBUG
- if (gs_debug_c('L')) {
- int i;
-
- dprintf1(" levels[%u]", *pdata_index);
- for (i = 0; i < n; ++i)
- dprintf1(" %u",
- porder->levels[*pdata_index + i]);
- dputc('\n');
- }
- #endif
- } else { /* Setting bits */
- byte *bptr =
- (byte *)porder->bit_data +
- (*pdata_index - porder->num_levels) * elt_size;
-
- cbp = cmd_read_data(pcb, bptr, n * elt_size, cbp);
- #ifdef DEBUG
- if (gs_debug_c('L')) {
- int i;
-
- dprintf1(" bits[%u]", *pdata_index - porder->num_levels);
- for (i = 0; i < n; ++i) {
- const byte *pb = (byte *)porder->bit_data +
- (*pdata_index - porder->num_levels + i) * elt_size;
-
- if (porder->procs == &ht_order_procs_default) {
- const gx_ht_bit *pbit = (const gx_ht_bit *)pb;
-
- dprintf2(" (%u,0x%lx)", pbit->offset, (ulong)pbit->mask);
- } else {
- debug_dump_bytes(pb, pb + elt_size, NULL);
- }
- }
- dputc('\n');
- }
- #endif
- }
- *pdata_index += n;
- /*
- * If this is the end of a component, check whether a copy of its data
- * exists in ROM.
- */
- if (*pdata_index == porder->num_levels + porder->num_bits) {
- const gx_dht_proc *phtrp = gx_device_halftone_list;
-
- for (; *phtrp; ++phtrp) {
- const gx_device_halftone_resource_t *const *pphtr = (*phtrp)();
- const gx_device_halftone_resource_t *phtr;
-
- while ((phtr = *pphtr++) != 0) {
- if (phtr->Width == porder->width &&
- phtr->Height == porder->height &&
- phtr->num_levels == porder->num_levels &&
- !memcmp(phtr->levels, porder->levels,
- phtr->num_levels * sizeof(*phtr->levels)) &&
- !memcmp(phtr->bit_data, porder->bit_data,
- phtr->Width * phtr->Height * elt_size)
- ) {
- /*
- * This is a predefined halftone. Free the levels and
- * bit_data arrays, replacing them with the built-in ones.
- */
- if (porder->data_memory) {
- gs_free_object(porder->data_memory, porder->bit_data,
- "construct_ht_order_short(bit_data)");
- gs_free_object(porder->data_memory, porder->levels,
- "construct_ht_order_short(levels)");
- }
- porder->data_memory = 0;
- porder->levels = (uint *)phtr->levels; /* actually const */
- porder->bit_data = (void *)phtr->bit_data; /* actually const */
- goto out;
- }
- }
- }
- out:
- /*
- * If this is the end of the data, install the (device) halftone.
- */
- if (porder ==
- (pdht->components != 0 ?
- &pdht->components[0].corder :
- &pdht->order)) {
- /* Make sure we have a halftone cache. */
- uint i;
-
- if (pis->ht_cache == 0) {
- gx_ht_cache *pcache =
- gx_ht_alloc_cache(mem,
- porder->num_levels + 2,
- gx_ht_cache_default_bits());
-
- if (pcache == 0)
- return_error(gs_error_VMerror);
- pis->ht_cache = pcache;
- }
- for (i = 1; i < pdht->num_comp; ++i) {
- gx_ht_order *pco = &pdht->components[i].corder;
-
- if (!pco->cache) {
- gx_ht_cache *pcache =
- gx_ht_alloc_cache(mem, 4,
- pco->raster *
- (pco->num_bits / pco->width) * 4);
-
- if (pcache == 0)
- return_error(gs_error_VMerror);
- pco->cache = pcache;
- gx_ht_init_cache(pco->cache, pco);
- }
- }
- if (pdht->num_comp) {
- pdht->components[0].corder.cache = pis->ht_cache;
- pdht->order = pdht->components[0].corder;
- }
- /*
- * Normally, the following procedure releases the existing
- * device halftone and assumes ownership of everything in the
- * new one except the top-level structure. However, there is a
- * special check for the case where pdht == pis->dev_ht, solely
- * so that we can avoid the sleazy things we would otherwise
- * have to do here.
- */
- gx_imager_dev_ht_install(pis, pdht, halftone_type,
- (const gx_device *)cdev);
- }
- }
- pcb->ptr = cbp;
- return 0;
- }
-
- private int
- read_set_misc2(command_buf_t *pcb, gs_imager_state *pis, segment_notes *pnotes)
- {
- const byte *cbp = pcb->ptr;
- uint mask, cb;
-
- cmd_getw(mask, cbp);
- if (mask & cap_join_known) {
- cb = *cbp++;
- pis->line_params.cap = (gs_line_cap)((cb >> 3) & 7);
- pis->line_params.join = (gs_line_join)(cb & 7);
- if_debug2('L', " cap=%d join=%d\n",
- pis->line_params.cap, pis->line_params.join);
- }
- if (mask & cj_ac_sa_known) {
- cb = *cbp++;
- pis->line_params.curve_join = ((cb >> 2) & 7) - 1;
- pis->accurate_curves = (cb & 2) != 0;
- pis->stroke_adjust = cb & 1;
- if_debug3('L', " CJ=%d AC=%d SA=%d\n",
- pis->line_params.curve_join, pis->accurate_curves,
- pis->stroke_adjust);
- }
- if (mask & flatness_known) {
- cmd_get_value(pis->flatness, cbp);
- if_debug1('L', " flatness=%g\n", pis->flatness);
- }
- if (mask & line_width_known) {
- float width;
-
- cmd_get_value(width, cbp);
- if_debug1('L', " line_width=%g\n", width);
- gx_set_line_width(&pis->line_params, width);
- }
- if (mask & miter_limit_known) {
- float limit;
-
- cmd_get_value(limit, cbp);
- if_debug1('L', " miter_limit=%g\n", limit);
- gx_set_miter_limit(&pis->line_params, limit);
- }
- if (mask & op_bm_tk_known) {
- cb = *cbp++;
- pis->blend_mode = cb >> 3;
- pis->text_knockout = (cb & 4) != 0;
- pis->overprint_mode = (cb >> 1) & 1;
- pis->overprint = cb & 1;
- if_debug4('L', " BM=%d TK=%d OPM=%d OP=%d\n",
- pis->blend_mode, pis->text_knockout, pis->overprint_mode,
- pis->overprint);
- }
- if (mask & segment_notes_known) {
- cb = *cbp++;
- *pnotes = (segment_notes)(cb & 0x3f);
- if_debug1('L', " notes=%d\n", *pnotes);
- }
- if (mask & opacity_alpha_known) {
- cmd_get_value(pis->opacity.alpha, cbp);
- if_debug1('L', " opacity.alpha=%g\n", pis->opacity.alpha);
- }
- if (mask & shape_alpha_known) {
- cmd_get_value(pis->shape.alpha, cbp);
- if_debug1('L', " shape.alpha=%g\n", pis->shape.alpha);
- }
- if (mask & alpha_known) {
- cmd_get_value(pis->alpha, cbp);
- if_debug1('L', " alpha=%u\n", pis->alpha);
- }
- pcb->ptr = cbp;
- return 0;
- }
-
- private int
- read_set_color_space(command_buf_t *pcb, gs_imager_state *pis,
- const gs_color_space **ppcs, gs_color_space *pcolor_space,
- gs_memory_t *mem)
- {
- const byte *cbp = pcb->ptr;
- byte b = *cbp++;
- int index = b >> 4;
- const gs_color_space *pcs;
- int code = 0;
-
- if_debug3('L', " %d%s%s\n", index,
- (b & 8 ? " (indexed)" : ""),
- (b & 4 ? "(proc)" : ""));
- switch (index) {
- case gs_color_space_index_DeviceGray:
- pcs = gs_cspace_DeviceGray(pis);
- break;
- case gs_color_space_index_DeviceRGB:
- pcs = gs_cspace_DeviceRGB(pis);
- break;
- case gs_color_space_index_DeviceCMYK:
- pcs = gs_cspace_DeviceCMYK(pis);
- break;
- default:
- code = gs_note_error(gs_error_rangecheck); /* others are NYI */
- goto out;
- }
- /* Free any old indexed color space data. */
- if (pcolor_space->params.indexed.use_proc) {
- if (pcolor_space->params.indexed.lookup.map)
- gs_free_object(mem,
- pcolor_space->params.indexed.lookup.map->values,
- "old indexed map values");
- gs_free_object(mem, pcolor_space->params.indexed.lookup.map,
- "old indexed map");
- pcolor_space->params.indexed.lookup.map = 0;
- } else {
- if (pcolor_space->params.indexed.lookup.table.size)
- gs_free_const_string(mem,
- pcolor_space->params.indexed.lookup.table.data,
- pcolor_space->params.indexed.lookup.table.size,
- "old indexed table");
- pcolor_space->params.indexed.lookup.table.size = 0;
- }
- if (b & 8) {
- bool use_proc = (b & 4) != 0;
- int hival;
- int num_values;
- byte *data;
- uint data_size;
-
- cmd_getw(hival, cbp);
- num_values = (hival + 1) * gs_color_space_num_components(pcs);
- if (use_proc) {
- gs_indexed_map *map;
-
- code = alloc_indexed_map(&map, num_values, mem, "indexed map");
- if (code < 0)
- goto out;
- map->proc.lookup_index = lookup_indexed_map;
- pcolor_space->params.indexed.lookup.map = map;
- data = (byte *)map->values;
- data_size = num_values * sizeof(map->values[0]);
- } else {
- byte *table = gs_alloc_string(mem, num_values, "indexed table");
-
- if (table == 0) {
- code = gs_note_error(gs_error_VMerror);
- goto out;
- }
- pcolor_space->params.indexed.lookup.table.data = table;
- pcolor_space->params.indexed.lookup.table.size = num_values;
- data = table;
- data_size = num_values;
- }
- cbp = cmd_read_data(pcb, data, data_size, cbp);
- pcolor_space->type =
- &gs_color_space_type_Indexed;
- memmove(&pcolor_space->params.indexed.base_space, pcs,
- sizeof(pcolor_space->params.indexed.base_space));
- pcolor_space->params.indexed.hival = hival;
- pcolor_space->params.indexed.use_proc = use_proc;
- pcs = pcolor_space;
- }
- *ppcs = pcs;
- out:
- pcb->ptr = cbp;
- return code;
- }
-
- private int
- read_begin_image(command_buf_t *pcb, gs_image_common_t *pic,
- const gs_color_space *pcs)
- {
- uint index = *(pcb->ptr)++;
- const gx_image_type_t *image_type = gx_image_type_table[index];
- stream s;
- int code;
-
- /* This is sloppy, but we don't have enough information to do better. */
- pcb->ptr = top_up_cbuf(pcb, pcb->ptr);
- sread_string(&s, pcb->ptr, pcb->end - pcb->ptr);
- code = image_type->sget(pic, &s, pcs);
- pcb->ptr = sbufptr(&s);
- return code;
- }
-
- private int
- read_put_params(command_buf_t *pcb, gs_imager_state *pis,
- gx_device_clist_reader *cdev, gs_memory_t *mem)
- {
- const byte *cbp = pcb->ptr;
- gs_c_param_list param_list;
- uint cleft;
- uint rleft;
- bool alloc_data_on_heap = false;
- byte *param_buf;
- uint param_length;
- int code = 0;
-
- cmd_get_value(param_length, cbp);
- if_debug1('L', " length=%d\n", param_length);
- if (param_length == 0) {
- code = 1; /* empty list */
- goto out;
- }
-
- /* Make sure entire serialized param list is in cbuf */
- /* + force void* alignment */
- cbp = top_up_cbuf(pcb, cbp);
- if (pcb->end - cbp >= param_length) {
- param_buf = (byte *)cbp;
- cbp += param_length;
- } else {
- /* NOTE: param_buf must be maximally aligned */
- param_buf = gs_alloc_bytes(mem, param_length,
- "clist put_params");
- if (param_buf == 0) {
- code = gs_note_error(gs_error_VMerror);
- goto out;
- }
- alloc_data_on_heap = true;
- cleft = pcb->end - cbp;
- rleft = param_length - cleft;
- memmove(param_buf, cbp, cleft);
- pcb->end_status = sgets(pcb->s, param_buf + cleft, rleft, &rleft);
- cbp = pcb->end; /* force refill */
- }
-
- /*
- * Create a gs_c_param_list & expand into it.
- * NB that gs_c_param_list doesn't copy objects into
- * it, but rather keeps *pointers* to what's passed.
- * That's OK because the serialized format keeps enough
- * space to hold expanded versions of the structures,
- * but this means we cannot deallocate source buffer
- * until the gs_c_param_list is deleted.
- */
- gs_c_param_list_write(¶m_list, mem);
- code = gs_param_list_unserialize
- ( (gs_param_list *)¶m_list, param_buf );
- if (code >= 0 && code != param_length)
- code = gs_error_unknownerror; /* must match */
- if (code >= 0) {
- gs_c_param_list_read(¶m_list);
- code = gs_imager_putdeviceparams(pis, (gx_device *)cdev,
- (gs_param_list *)¶m_list);
- }
- gs_c_param_list_release(¶m_list);
- if (alloc_data_on_heap)
- gs_free_object(mem, param_buf, "clist put_params");
-
- out:
- pcb->ptr = cbp;
- return code;
- }
-
- /* ---------------- Utilities ---------------- */
-
- /* Read and unpack a short bitmap */
- private const byte *
- cmd_read_short_bits(command_buf_t *pcb, byte *data, int width_bytes,
- int height, uint raster, const byte *cbp)
- {
- uint bytes = width_bytes * height;
- const byte *pdata = data /*src*/ + bytes;
- byte *udata = data /*dest*/ + height * raster;
-
- cbp = cmd_read_data(pcb, data, width_bytes * height, cbp);
- while (--height >= 0) {
- udata -= raster, pdata -= width_bytes;
- switch (width_bytes) {
- default:
- memmove(udata, pdata, width_bytes);
- break;
- case 6:
- udata[5] = pdata[5];
- case 5:
- udata[4] = pdata[4];
- case 4:
- udata[3] = pdata[3];
- case 3:
- udata[2] = pdata[2];
- case 2:
- udata[1] = pdata[1];
- case 1:
- udata[0] = pdata[0];
- case 0:; /* shouldn't happen */
- }
- }
- return cbp;
- }
-
- /* Read a rectangle. */
- private const byte *
- cmd_read_rect(int op, gx_cmd_rect * prect, const byte * cbp)
- {
- cmd_getw(prect->x, cbp);
- if (op & 0xf)
- prect->y += ((op >> 2) & 3) - 2;
- else {
- cmd_getw(prect->y, cbp);
- }
- cmd_getw(prect->width, cbp);
- if (op & 0xf)
- prect->height += (op & 3) - 2;
- else {
- cmd_getw(prect->height, cbp);
- }
- return cbp;
- }
-
- /* Read a transformation matrix. */
- private const byte *
- cmd_read_matrix(gs_matrix * pmat, const byte * cbp)
- {
- stream s;
-
- sread_string(&s, cbp, 1 + sizeof(*pmat));
- sget_matrix(&s, pmat);
- return cbp + stell(&s);
- }
-
- /* Select a map for loading with data. */
- private int
- cmd_select_map(cmd_map_index map_index, cmd_map_contents cont,
- gs_imager_state * pis, gx_ht_order * porder, frac ** pmdata,
- uint * pcount, gs_memory_t * mem)
- {
- gx_transfer_map *map;
- gx_transfer_map **pmap;
- const char *cname;
-
- switch (map_index) {
- case cmd_map_transfer:
- if_debug0('L', " transfer");
- map = pis->set_transfer.colored.gray;
- pis->effective_transfer.indexed[0] =
- pis->effective_transfer.indexed[1] =
- pis->effective_transfer.indexed[2] =
- pis->effective_transfer.indexed[3] =
- map;
- goto transfer;
- case cmd_map_transfer_0:
- case cmd_map_transfer_1:
- case cmd_map_transfer_2:
- case cmd_map_transfer_3:
- {
- int i = map_index - cmd_map_transfer_0;
-
- if_debug1('L', " transfer[%d]", i);
- rc_unshare_struct(pis->set_transfer.indexed[i], gx_transfer_map,
- &st_transfer_map, mem,
- return_error(gs_error_VMerror),
- "cmd_select_map(transfer)");
- map = pis->set_transfer.indexed[i];
- pis->effective_transfer.indexed[i] = map;
- }
- transfer: if (cont != cmd_map_other) {
- gx_set_identity_transfer(map);
- *pmdata = 0;
- *pcount = 0;
- return 0;
- }
- break;
- case cmd_map_ht_transfer:
- if_debug0('L', " ht transfer");
- /* Halftone transfer maps are never shared, but */
- /* rc_unshare_struct is a good way to get one allocated */
- /* if it hasn't been yet. */
- pmap = &porder->transfer;
- cname = "cmd_select_map(ht transfer)";
- goto alloc;
- case cmd_map_black_generation:
- if_debug0('L', " black generation");
- pmap = &pis->black_generation;
- cname = "cmd_select_map(black generation)";
- goto alloc;
- case cmd_map_undercolor_removal:
- if_debug0('L', " undercolor removal");
- pmap = &pis->undercolor_removal;
- cname = "cmd_select_map(undercolor removal)";
- alloc: if (cont == cmd_map_none) {
- rc_decrement(*pmap, cname);
- *pmap = 0;
- *pmdata = 0;
- *pcount = 0;
- return 0;
- }
- rc_unshare_struct(*pmap, gx_transfer_map, &st_transfer_map,
- mem, return_error(gs_error_VMerror), cname);
- map = *pmap;
- if (cont == cmd_map_identity) {
- gx_set_identity_transfer(map);
- *pmdata = 0;
- *pcount = 0;
- return 0;
- }
- break;
- default:
- *pmdata = 0;
- return 0;
- }
- map->proc = gs_mapped_transfer;
- *pmdata = map->values;
- *pcount = sizeof(map->values);
- return 0;
- }
-
- /* Create a device halftone for the imager if necessary. */
- private int
- cmd_create_dev_ht(gx_device_halftone **ppdht, gs_memory_t *mem)
- {
- gx_device_halftone *pdht = *ppdht;
-
- if (pdht == 0) {
- rc_header rc;
-
- rc_alloc_struct_1(pdht, gx_device_halftone, &st_device_halftone, mem,
- return_error(gs_error_VMerror),
- "cmd_create_dev_ht");
- rc = pdht->rc;
- memset(pdht, 0, sizeof(*pdht));
- pdht->rc = rc;
- *ppdht = pdht;
- }
- return 0;
- }
-
- /* Resize the halftone components array if necessary. */
- private int
- cmd_resize_halftone(gx_device_halftone **ppdht, uint num_comp,
- gs_memory_t * mem)
- {
- int code = cmd_create_dev_ht(ppdht, mem);
- gx_device_halftone *pdht = *ppdht;
-
- if (code < 0)
- return code;
- if (num_comp != pdht->num_comp) {
- gx_ht_order_component *pcomp;
-
- /*
- * We must be careful not to shrink or free the components array
- * before releasing any relevant elements.
- */
- if (num_comp < pdht->num_comp) {
- uint i;
-
- /* Don't release the default order. */
- for (i = pdht->num_comp; i-- > num_comp;)
- if (pdht->components[i].corder.bit_data != pdht->order.bit_data)
- gx_ht_order_release(&pdht->components[i].corder, mem, true);
- if (num_comp == 0) {
- gs_free_object(mem, pdht->components, "cmd_resize_halftone");
- pcomp = 0;
- } else {
- pcomp = gs_resize_object(mem, pdht->components, num_comp,
- "cmd_resize_halftone");
- if (pcomp == 0) {
- pdht->num_comp = num_comp; /* attempt consistency */
- return_error(gs_error_VMerror);
- }
- }
- } else {
- /* num_comp > pdht->num_comp */
- if (pdht->num_comp == 0)
- pcomp = gs_alloc_struct_array(mem, num_comp,
- gx_ht_order_component,
- &st_ht_order_component_element,
- "cmd_resize_halftone");
- else
- pcomp = gs_resize_object(mem, pdht->components, num_comp,
- "cmd_resize_halftone");
- if (pcomp == 0)
- return_error(gs_error_VMerror);
- memset(&pcomp[pdht->num_comp], 0,
- sizeof(*pcomp) * (num_comp - pdht->num_comp));
- }
- pdht->num_comp = num_comp;
- pdht->components = pcomp;
- }
- return 0;
- }
-
- /* ------ Path operations ------ */
-
- /* Decode a path segment. */
- private int
- clist_decode_segment(gx_path * ppath, int op, fixed vs[6],
- gs_fixed_point * ppos, int x0, int y0, segment_notes notes)
- {
- fixed px = ppos->x - int2fixed(x0);
- fixed py = ppos->y - int2fixed(y0);
- int code;
-
- #define A vs[0]
- #define B vs[1]
- #define C vs[2]
- #define D vs[3]
- #define E vs[4]
- #define F vs[5]
-
- switch (op) {
- case cmd_opv_rmoveto:
- code = gx_path_add_point(ppath, px += A, py += B);
- break;
- case cmd_opv_rlineto:
- code = gx_path_add_line_notes(ppath, px += A, py += B, notes);
- break;
- case cmd_opv_hlineto:
- code = gx_path_add_line_notes(ppath, px += A, py, notes);
- break;
- case cmd_opv_vlineto:
- code = gx_path_add_line_notes(ppath, px, py += A, notes);
- break;
- case cmd_opv_rmlineto:
- if ((code = gx_path_add_point(ppath, px += A, py += B)) < 0)
- break;
- code = gx_path_add_line_notes(ppath, px += C, py += D, notes);
- break;
- case cmd_opv_rm2lineto:
- if ((code = gx_path_add_point(ppath, px += A, py += B)) < 0 ||
- (code = gx_path_add_line_notes(ppath, px += C, py += D,
- notes)) < 0
- )
- break;
- code = gx_path_add_line_notes(ppath, px += E, py += F, notes);
- break;
- case cmd_opv_rm3lineto:
- if ((code = gx_path_add_point(ppath, px += A, py += B)) < 0 ||
- (code = gx_path_add_line_notes(ppath, px += C, py += D,
- notes)) < 0 ||
- (code = gx_path_add_line_notes(ppath, px += E, py += F,
- notes)) < 0
- )
- break;
- code = gx_path_add_line_notes(ppath, px -= C, py -= D, notes);
- break;
- case cmd_opv_rrcurveto: /* a b c d e f => a b a+c b+d a+c+e b+d+f */
- rrc: E += (C += A);
- F += (D += B);
- curve: code = gx_path_add_curve_notes(ppath, px + A, py + B,
- px + C, py + D,
- px + E, py + F, notes);
- px += E, py += F;
- break;
- case cmd_opv_hvcurveto: /* a b c d => a 0 a+b c a+b c+d */
- hvc: F = C + D, D = C, E = C = A + B, B = 0;
- goto curve;
- case cmd_opv_vhcurveto: /* a b c d => 0 a b a+c b+d a+c */
- vhc: E = B + D, F = D = A + C, C = B, B = A, A = 0;
- goto curve;
- case cmd_opv_nrcurveto: /* a b c d => 0 0 a b a+c b+d */
- F = B + D, E = A + C, D = B, C = A, B = A = 0;
- goto curve;
- case cmd_opv_rncurveto: /* a b c d => a b a+c b+d a+c b+d */
- F = D += B, E = C += A;
- goto curve;
- case cmd_opv_vqcurveto: /* a b => VH a b TS(a,b) TS(b,a) */
- if ((A ^ B) < 0)
- C = -B, D = -A;
- else
- C = B, D = A;
- goto vhc;
- case cmd_opv_hqcurveto: /* a b => HV a TS(a,b) b TS(b,a) */
- if ((A ^ B) < 0)
- D = -A, C = B, B = -B;
- else
- D = A, C = B;
- goto hvc;
- case cmd_opv_scurveto: /* (a b c d e f) => */
- {
- fixed a = A, b = B;
-
- /* See gxclpath.h for details on the following. */
- if (A == 0) {
- /* Previous curve was vh or vv */
- A = E - C, B = D - F, C = C - a, D = b - D, E = a, F = -b;
- } else {
- /* Previous curve was hv or hh */
- A = C - E, B = F - D, C = a - C, D = D - b, E = -a, F = b;
- }
- }
- goto rrc;
- case cmd_opv_closepath:
- code = gx_path_close_subpath(ppath);
- gx_path_current_point(ppath, (gs_fixed_point *) vs);
- px = A, py = B;
- break;
- default:
- return_error(gs_error_rangecheck);
- }
- #undef A
- #undef B
- #undef C
- #undef D
- #undef E
- #undef F
- ppos->x = px + int2fixed(x0);
- ppos->y = py + int2fixed(y0);
- return code;
- }
-
- /*
- * Execute a polyfill -- either a fill_parallelogram or a fill_triangle.
- * If we ever implement fill_trapezoid in the band list, that will be
- * detected here too.
- *
- * Note that degenerate parallelograms or triangles may collapse into
- * a single line or point. We must check for this so we don't try to
- * access non-existent segments.
- */
- private int
- clist_do_polyfill(gx_device *dev, gx_path *ppath,
- const gx_drawing_color *pdcolor,
- gs_logical_operation_t lop)
- {
- const subpath *psub = ppath->first_subpath;
- const segment *pseg1;
- const segment *pseg2;
- int code;
-
- if (psub && (pseg1 = psub->next) != 0 && (pseg2 = pseg1->next) != 0) {
- fixed px = psub->pt.x, py = psub->pt.y;
- fixed ax = pseg1->pt.x - px, ay = pseg1->pt.y - py;
- fixed bx, by;
- /*
- * We take advantage of the fact that the parameter lists for
- * fill_parallelogram and fill_triangle are identical.
- */
- dev_proc_fill_parallelogram((*fill));
-
- if (pseg2->next) {
- /* Parallelogram */
- fill = dev_proc(dev, fill_parallelogram);
- bx = pseg2->pt.x - pseg1->pt.x;
- by = pseg2->pt.y - pseg1->pt.y;
- } else {
- /* Triangle */
- fill = dev_proc(dev, fill_triangle);
- bx = pseg2->pt.x - px;
- by = pseg2->pt.y - py;
- }
- code = fill(dev, px, py, ax, ay, bx, by, pdcolor, lop);
- } else
- code = 0;
- gx_path_new(ppath);
- return code;
- }
-