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TMessagesProj/jni/mozjpeg/jcmaster.h

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+/*
+ * jcmaster.h
+ *
+ * This file was part of the Independent JPEG Group's software:
+ * Copyright (C) 1991-1997, Thomas G. Lane.
+ * mozjpeg Modifications:
+ * Copyright (C) 2014, Mozilla Corporation.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains the master control structures for the JPEG compressor.
+ */
+
+
+/* Private state */
+
+typedef enum {
+        main_pass,              /* input data, also do first output step */
+        huff_opt_pass,          /* Huffman code optimization pass */
+        output_pass,            /* data output pass */
+        trellis_pass            /* trellis quantization pass */
+} c_pass_type;
+
+typedef struct {
+  struct jpeg_comp_master pub;  /* public fields */
+
+  c_pass_type pass_type;        /* the type of the current pass */
+
+  int pass_number;              /* # of passes completed */
+  int total_passes;             /* total # of passes needed */
+
+  int scan_number;              /* current index in scan_info[] */
+
+  /* fields for scan optimisation */
+  int pass_number_scan_opt_base; /* pass number where scan optimization begins */
+  unsigned char * scan_buffer[64]; /* buffer for a given scan */
+  unsigned long scan_size[64]; /* size for a given scan */
+  int actual_Al[64]; /* actual value of Al used for a scan */
+  unsigned long best_cost; /* bit count for best frequency split */
+  int best_freq_split_idx_luma; /* index for best frequency split (luma) */
+  int best_freq_split_idx_chroma; /* index for best frequency split (chroma) */
+  int best_Al_luma; /* best value for Al found in scan search (luma) */
+  int best_Al_chroma; /* best value for Al found in scan search (luma) */
+  boolean interleave_chroma_dc; /* indicate whether to interleave chroma DC scans */
+  struct jpeg_destination_mgr * saved_dest; /* saved value of cinfo->dest */
+
+  /*
+   * This is here so we can add libjpeg-turbo version/build information to the
+   * global string table without introducing a new global symbol.  Adding this
+   * information to the global string table allows one to examine a binary
+   * object and determine which version of libjpeg-turbo it was built from or
+   * linked against.
+   */
+  const char *jpeg_version;
+} my_comp_master;
+
+typedef my_comp_master * my_master_ptr;