Index: third_party/libjpeg/jdpostct.c |
diff --git a/third_party/libjpeg/jdpostct.c b/third_party/libjpeg/jdpostct.c |
deleted file mode 100644 |
index 571563d728e7135996cc982b8f8dfba3d69a9846..0000000000000000000000000000000000000000 |
--- a/third_party/libjpeg/jdpostct.c |
+++ /dev/null |
@@ -1,290 +0,0 @@ |
-/* |
- * jdpostct.c |
- * |
- * Copyright (C) 1994-1996, Thomas G. Lane. |
- * This file is part of the Independent JPEG Group's software. |
- * For conditions of distribution and use, see the accompanying README file. |
- * |
- * This file contains the decompression postprocessing controller. |
- * This controller manages the upsampling, color conversion, and color |
- * quantization/reduction steps; specifically, it controls the buffering |
- * between upsample/color conversion and color quantization/reduction. |
- * |
- * If no color quantization/reduction is required, then this module has no |
- * work to do, and it just hands off to the upsample/color conversion code. |
- * An integrated upsample/convert/quantize process would replace this module |
- * entirely. |
- */ |
- |
-#define JPEG_INTERNALS |
-#include "jinclude.h" |
-#include "jpeglib.h" |
- |
- |
-/* Private buffer controller object */ |
- |
-typedef struct { |
- struct jpeg_d_post_controller pub; /* public fields */ |
- |
- /* Color quantization source buffer: this holds output data from |
- * the upsample/color conversion step to be passed to the quantizer. |
- * For two-pass color quantization, we need a full-image buffer; |
- * for one-pass operation, a strip buffer is sufficient. |
- */ |
- jvirt_sarray_ptr whole_image; /* virtual array, or NULL if one-pass */ |
- JSAMPARRAY buffer; /* strip buffer, or current strip of virtual */ |
- JDIMENSION strip_height; /* buffer size in rows */ |
- /* for two-pass mode only: */ |
- JDIMENSION starting_row; /* row # of first row in current strip */ |
- JDIMENSION next_row; /* index of next row to fill/empty in strip */ |
-} my_post_controller; |
- |
-typedef my_post_controller * my_post_ptr; |
- |
- |
-/* Forward declarations */ |
-METHODDEF(void) post_process_1pass |
- JPP((j_decompress_ptr cinfo, |
- JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, |
- JDIMENSION in_row_groups_avail, |
- JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, |
- JDIMENSION out_rows_avail)); |
-#ifdef QUANT_2PASS_SUPPORTED |
-METHODDEF(void) post_process_prepass |
- JPP((j_decompress_ptr cinfo, |
- JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, |
- JDIMENSION in_row_groups_avail, |
- JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, |
- JDIMENSION out_rows_avail)); |
-METHODDEF(void) post_process_2pass |
- JPP((j_decompress_ptr cinfo, |
- JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, |
- JDIMENSION in_row_groups_avail, |
- JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, |
- JDIMENSION out_rows_avail)); |
-#endif |
- |
- |
-/* |
- * Initialize for a processing pass. |
- */ |
- |
-METHODDEF(void) |
-start_pass_dpost (j_decompress_ptr cinfo, J_BUF_MODE pass_mode) |
-{ |
- my_post_ptr post = (my_post_ptr) cinfo->post; |
- |
- switch (pass_mode) { |
- case JBUF_PASS_THRU: |
- if (cinfo->quantize_colors) { |
- /* Single-pass processing with color quantization. */ |
- post->pub.post_process_data = post_process_1pass; |
- /* We could be doing buffered-image output before starting a 2-pass |
- * color quantization; in that case, jinit_d_post_controller did not |
- * allocate a strip buffer. Use the virtual-array buffer as workspace. |
- */ |
- if (post->buffer == NULL) { |
- post->buffer = (*cinfo->mem->access_virt_sarray) |
- ((j_common_ptr) cinfo, post->whole_image, |
- (JDIMENSION) 0, post->strip_height, TRUE); |
- } |
- } else { |
- /* For single-pass processing without color quantization, |
- * I have no work to do; just call the upsampler directly. |
- */ |
- post->pub.post_process_data = cinfo->upsample->upsample; |
- } |
- break; |
-#ifdef QUANT_2PASS_SUPPORTED |
- case JBUF_SAVE_AND_PASS: |
- /* First pass of 2-pass quantization */ |
- if (post->whole_image == NULL) |
- ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
- post->pub.post_process_data = post_process_prepass; |
- break; |
- case JBUF_CRANK_DEST: |
- /* Second pass of 2-pass quantization */ |
- if (post->whole_image == NULL) |
- ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
- post->pub.post_process_data = post_process_2pass; |
- break; |
-#endif /* QUANT_2PASS_SUPPORTED */ |
- default: |
- ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
- break; |
- } |
- post->starting_row = post->next_row = 0; |
-} |
- |
- |
-/* |
- * Process some data in the one-pass (strip buffer) case. |
- * This is used for color precision reduction as well as one-pass quantization. |
- */ |
- |
-METHODDEF(void) |
-post_process_1pass (j_decompress_ptr cinfo, |
- JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, |
- JDIMENSION in_row_groups_avail, |
- JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, |
- JDIMENSION out_rows_avail) |
-{ |
- my_post_ptr post = (my_post_ptr) cinfo->post; |
- JDIMENSION num_rows, max_rows; |
- |
- /* Fill the buffer, but not more than what we can dump out in one go. */ |
- /* Note we rely on the upsampler to detect bottom of image. */ |
- max_rows = out_rows_avail - *out_row_ctr; |
- if (max_rows > post->strip_height) |
- max_rows = post->strip_height; |
- num_rows = 0; |
- (*cinfo->upsample->upsample) (cinfo, |
- input_buf, in_row_group_ctr, in_row_groups_avail, |
- post->buffer, &num_rows, max_rows); |
- /* Quantize and emit data. */ |
- (*cinfo->cquantize->color_quantize) (cinfo, |
- post->buffer, output_buf + *out_row_ctr, (int) num_rows); |
- *out_row_ctr += num_rows; |
-} |
- |
- |
-#ifdef QUANT_2PASS_SUPPORTED |
- |
-/* |
- * Process some data in the first pass of 2-pass quantization. |
- */ |
- |
-METHODDEF(void) |
-post_process_prepass (j_decompress_ptr cinfo, |
- JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, |
- JDIMENSION in_row_groups_avail, |
- JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, |
- JDIMENSION out_rows_avail) |
-{ |
- my_post_ptr post = (my_post_ptr) cinfo->post; |
- JDIMENSION old_next_row, num_rows; |
- |
- /* Reposition virtual buffer if at start of strip. */ |
- if (post->next_row == 0) { |
- post->buffer = (*cinfo->mem->access_virt_sarray) |
- ((j_common_ptr) cinfo, post->whole_image, |
- post->starting_row, post->strip_height, TRUE); |
- } |
- |
- /* Upsample some data (up to a strip height's worth). */ |
- old_next_row = post->next_row; |
- (*cinfo->upsample->upsample) (cinfo, |
- input_buf, in_row_group_ctr, in_row_groups_avail, |
- post->buffer, &post->next_row, post->strip_height); |
- |
- /* Allow quantizer to scan new data. No data is emitted, */ |
- /* but we advance out_row_ctr so outer loop can tell when we're done. */ |
- if (post->next_row > old_next_row) { |
- num_rows = post->next_row - old_next_row; |
- (*cinfo->cquantize->color_quantize) (cinfo, post->buffer + old_next_row, |
- (JSAMPARRAY) NULL, (int) num_rows); |
- *out_row_ctr += num_rows; |
- } |
- |
- /* Advance if we filled the strip. */ |
- if (post->next_row >= post->strip_height) { |
- post->starting_row += post->strip_height; |
- post->next_row = 0; |
- } |
-} |
- |
- |
-/* |
- * Process some data in the second pass of 2-pass quantization. |
- */ |
- |
-METHODDEF(void) |
-post_process_2pass (j_decompress_ptr cinfo, |
- JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, |
- JDIMENSION in_row_groups_avail, |
- JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, |
- JDIMENSION out_rows_avail) |
-{ |
- my_post_ptr post = (my_post_ptr) cinfo->post; |
- JDIMENSION num_rows, max_rows; |
- |
- /* Reposition virtual buffer if at start of strip. */ |
- if (post->next_row == 0) { |
- post->buffer = (*cinfo->mem->access_virt_sarray) |
- ((j_common_ptr) cinfo, post->whole_image, |
- post->starting_row, post->strip_height, FALSE); |
- } |
- |
- /* Determine number of rows to emit. */ |
- num_rows = post->strip_height - post->next_row; /* available in strip */ |
- max_rows = out_rows_avail - *out_row_ctr; /* available in output area */ |
- if (num_rows > max_rows) |
- num_rows = max_rows; |
- /* We have to check bottom of image here, can't depend on upsampler. */ |
- max_rows = cinfo->output_height - post->starting_row; |
- if (num_rows > max_rows) |
- num_rows = max_rows; |
- |
- /* Quantize and emit data. */ |
- (*cinfo->cquantize->color_quantize) (cinfo, |
- post->buffer + post->next_row, output_buf + *out_row_ctr, |
- (int) num_rows); |
- *out_row_ctr += num_rows; |
- |
- /* Advance if we filled the strip. */ |
- post->next_row += num_rows; |
- if (post->next_row >= post->strip_height) { |
- post->starting_row += post->strip_height; |
- post->next_row = 0; |
- } |
-} |
- |
-#endif /* QUANT_2PASS_SUPPORTED */ |
- |
- |
-/* |
- * Initialize postprocessing controller. |
- */ |
- |
-GLOBAL(void) |
-jinit_d_post_controller (j_decompress_ptr cinfo, boolean need_full_buffer) |
-{ |
- my_post_ptr post; |
- |
- post = (my_post_ptr) |
- (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, |
- SIZEOF(my_post_controller)); |
- cinfo->post = (struct jpeg_d_post_controller *) post; |
- post->pub.start_pass = start_pass_dpost; |
- post->whole_image = NULL; /* flag for no virtual arrays */ |
- post->buffer = NULL; /* flag for no strip buffer */ |
- |
- /* Create the quantization buffer, if needed */ |
- if (cinfo->quantize_colors) { |
- /* The buffer strip height is max_v_samp_factor, which is typically |
- * an efficient number of rows for upsampling to return. |
- * (In the presence of output rescaling, we might want to be smarter?) |
- */ |
- post->strip_height = (JDIMENSION) cinfo->max_v_samp_factor; |
- if (need_full_buffer) { |
- /* Two-pass color quantization: need full-image storage. */ |
- /* We round up the number of rows to a multiple of the strip height. */ |
-#ifdef QUANT_2PASS_SUPPORTED |
- post->whole_image = (*cinfo->mem->request_virt_sarray) |
- ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, |
- cinfo->output_width * cinfo->out_color_components, |
- (JDIMENSION) jround_up((long) cinfo->output_height, |
- (long) post->strip_height), |
- post->strip_height); |
-#else |
- ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
-#endif /* QUANT_2PASS_SUPPORTED */ |
- } else { |
- /* One-pass color quantization: just make a strip buffer. */ |
- post->buffer = (*cinfo->mem->alloc_sarray) |
- ((j_common_ptr) cinfo, JPOOL_IMAGE, |
- cinfo->output_width * cinfo->out_color_components, |
- post->strip_height); |
- } |
- } |
-} |