From 2959d43b2bb4fe5f689043996c5ee64fba67799f Mon Sep 17 00:00:00 2001
From: Oliver Schinagl <oliver@schinagl.nl>
Date: Sun, 5 Jun 2005 16:47:26 +0000
Subject:

---
 src/c_huffman.c | 74 ++++++++++++++++-----------------------------------------
 1 file changed, 20 insertions(+), 54 deletions(-)

diff --git a/src/c_huffman.c b/src/c_huffman.c
index 98e0f71..60b0709 100644
--- a/src/c_huffman.c
+++ b/src/c_huffman.c
@@ -38,24 +38,7 @@ typedef struct {
 } savable_state;
 
 #define ASSIGN_STATE(dest,src)  ((dest) = (src))
-/*
-typedef struct {
-	//struct jpeg_entropy_encoder pub; // public fields 
-
-	savable_state saved;		// Bit buffer & DC state at start of MCU 
-
-	// These fields are NOT loaded into local working state. 
-	unsigned int restarts_to_go;	// MCUs left in this restart interval 
-	int next_restart_num;		// next restart number to write (0-7) 
 
-	// Pointers to derived tables (these workspaces have image lifespan) 
-	c_derived_tbl * dc_derived_tbls[NUM_HUFF_TBLS];
-	c_derived_tbl * ac_derived_tbls[NUM_HUFF_TBLS];
-
-} huff_entropy_encoder;
-
-typedef huff_entropy_encoder * huff_entropy_ptr;
-*/
 
 /* Working state while writing an MCU.
  * This struct contains all the fields that are needed by subroutines.
@@ -105,7 +88,7 @@ add_huff_table (JHUFF_TBL *htblptr, const UINT8 *bits, const UINT8 *val)
 		perror("Bad Huffman code table entry");
 		exit(0);
 	}
-	//ERREXIT(cinfo, JERR_BAD_HUFF_TABLE);
+
 
 	MEMCOPY((htblptr)->huffval, val, nsymbols * SIZEOF(UINT8));
 
@@ -344,25 +327,6 @@ inline static boolean emit_bits(working_state * state, unsigned int code, int si
 	return TRUE;
 }
 
-/*
- * Initialize for a Huffman-compressed scan.
- */
-/*
-   static void start_pass_huff (j_compress_ptr cinfo) {
-   huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
-
-//entropy->pub.encode_mcu = encode_mcu_huff;
-//entropy->pub.finish_pass = finish_pass_huff;
-
-// Initialize bit buffer to empty 
-entropy->saved.put_buffer = 0;
-entropy->saved.put_bits = 0;
-
-// Initialize restart stuff 
-entropy->restarts_to_go = cinfo->restart_interval;
-entropy->next_restart_num = 0;
-}
-*/
 
 	static boolean flush_bits (working_state * state) {
 		if (! emit_bits(state, 0x7F, 7)) // fill any partial byte with ones 
@@ -422,7 +386,7 @@ int encode_one_block(working_state *state, JCOEFPTR block, int last_dc_val, c_de
 		if (! emit_bits(state, (unsigned int) temp2, nbits)) {
 			return FALSE;
 		}
-			bitCounter +=  nbits; // TODEBUG
+		bitCounter +=  nbits; // TODEBUG
 	}
 
 	/* Encode the AC coefficients per section F.1.2.2 */
@@ -492,25 +456,24 @@ int encode_one_block(working_state *state, JCOEFPTR block, int last_dc_val, c_de
 /*
  * Emit a restart marker & resynchronize predictions.
  */
-/*
-   static boolean emit_restart (working_state * state, int restart_num) {
-   int ci;
 
-   if (! flush_bits(state))
-   return FALSE;
+static boolean emit_restart (working_state * state, int restart_num) {
+	int ci;
 
-   emit_byte(state, 0xFF, return FALSE);
-   emit_byte(state, JPEG_RST0 + restart_num, return FALSE);
+	if (! flush_bits(state))
+		return FALSE;
 
-// Re-initialize DC predictions to 0 
-for (ci = 0; ci < state->cinfo->comps_in_scan; ci++)
-state->cur.last_dc_val[ci] = 0;
+	emit_byte(state, 0xFF, return FALSE);
+	emit_byte(state, JPEG_RST0 + restart_num, return FALSE);
 
-// The restart counter is not updated until we successfully write the MCU. 
+	// Re-initialize DC predictions to 0 
+	for (ci = 0; ci < MAX_COMPS_IN_SCAN; ci++)
+		state->cur.last_dc_val[ci] = 0;
 
-return TRUE;
+	// The restart counter is not updated until we successfully write the MCU. 
+	return TRUE;
 }
-*/
+
 
 /*
  * Encode and output one MCU's worth of Huffman-compressed coefficients.
@@ -596,10 +559,10 @@ ASSIGN_STATE(entropy->saved, state.cur);
 
 
 
-//int dataToCode[64];
 
 static int  lastDCValue;
 static  working_state savedHuffstate;
+
 unsigned char outputBufferHuffman[500];
 
 void encode_huffBlock64_init(void)
@@ -619,7 +582,10 @@ void encode_huffBlock64_start(void)
 	lastDCValue = 0;
 	// Initialise buffer 
 	savedHuffstate.next_output_byte 	= outputBufferHuffman;
-	savedHuffstate.free_in_buffer 	= 500;  // TODO:
+	savedHuffstate.free_in_buffer 		= 500;  // TODO:
+	savedHuffstate.cur.put_buffer 		= 0;
+	savedHuffstate.cur.put_bits 		= 0;
+
 	//	savedHuffstate.cinfo 		= NULL;
 }
 
@@ -642,7 +608,7 @@ void encode_huffBlock64(short * data)
 	savedHuffstate.free_in_buffer = state.free_in_buffer;
 	ASSIGN_STATE(savedHuffstate.cur, state.cur);
 
-	
+
 
 }
 void encode_huffBlock64_end(void )
-- 
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