Diff: SimpleJpegDecode.cpp

Revision:

7:3ad9c948bc06

Parent:

6:95be1cd2bc14

--- a/SimpleJpegDecode.cpp	Wed Dec 05 12:41:25 2012 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,161 +0,0 @@
-#include "SimpleJpegDecode.h"
-
-#define DBG(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);} while(0);
-#define ASSERT(A) while(!(A)){fprintf(stderr,"\n\n%s@%d %s ASSERT!\n\n",__PRETTY_FUNCTION__,__LINE__,#A);exit(1);};
-
-
-#define _1_4020 45
-#define _0_3441 11
-#define _0_7139 23
-#define _1_7718 57
-#define _0_0012 0
-
-int adjust(int r) {
-    if (r >= 0) {
-        if (r <= 255) {
-            return r;
-        } else {
-            return 255;
-        }
-    } else {
-        return 0;
-    }
-}
-    
-void convYUVtoRGB(uint8_t rgb[], int y, int u, int v)
-{
-    rgb[0] = adjust((y*32             + v*_1_4020)/32 + 128);
-    rgb[1] = adjust((y*32 - u*_0_3441 - v*_0_7139)/32 + 128);
-    rgb[2] = adjust((y*32 + u*_1_7718 - v*_0_0012)/32 + 128);
-}
-
-SimpleJpegDecode::SimpleJpegDecode(uint8_t output_mode)
-{
-    m_output_mode = output_mode;
-    clearOnResult();
-}
-
-
-void SimpleJpegDecode::output(int mcu, int block, int scan, int value)
-{
-    int sc = (block < yblock) ? 0 : 1;
-    inputBLOCK(mcu, block, scan, value * qt[sc][scan]);
-}
-
-void SimpleJpegDecode::outputDC(int mcu, int block, int value)
-{
-    output(mcu, block, 0, value);
-    DC_count++;
-}
-
-void SimpleJpegDecode::outputAC(int mcu, int block, int scan, int value)
-{
-    output(mcu, block, scan, value);
-    AC_count++;
-}
-
-void SimpleJpegDecode::outputMARK(uint8_t c)
-{
-}
-
-void SimpleJpegDecode::format_YUV(int mcu, int block, int8_t* values)
-{
-    if (block < yblock+1) {
-        memcpy(m_block_data[block], values, 64);
-        return;
-    }
-    int mcu_x_count = (width+15)/16;
-    int mcu_x = mcu % mcu_x_count;
-    int mcu_y = mcu / mcu_x_count;
-    uint8_t yuv[3];
-    if (yblock == 2) {
-        for(int y = 0; y < 8; y++) {
-            for(int x = 0; x < 16; x++) {
-                yuv[0] = m_block_data[x/8][y*8+x%8] + 128;
-                yuv[1] = m_block_data[2][y*8+x/2] + 128;
-                yuv[2] = values[y*8+x/2] + 128;
-                onResult(mcu_x * 16 + x, mcu_y * 8 + y, yuv);
-            }
-        }
-    } else if (yblock == 4) {
-        for(int y = 0; y < 16; y++) {
-            for(int x = 0; x < 16; x++) {
-                yuv[0] = m_block_data[(y/8)*2+x/8][(y%8)*8+x%8] + 128;
-                yuv[1] = m_block_data[4][(y/2)*8+x/2] + 128;
-                yuv[2] = values[(y/2)*8+x/2] + 128;
-                onResult(mcu_x * 16 + x, mcu_y * 16 + y, yuv);
-            }
-        }
-    } else {
-        ASSERT(yblock == 2 || yblock == 4);
-    }    
-}
-
-void SimpleJpegDecode::format_RGB24(int mcu, int block, int8_t* values)
-{
-    if (block < yblock+1) {
-        memcpy(m_block_data[block], values, 64);
-        return;
-    }
-    int mcu_x_count = (width+15)/16;
-    int mcu_x = mcu % mcu_x_count;
-    int mcu_y = mcu / mcu_x_count;
-    uint8_t rgb[3];
-    if (yblock == 2) {
-        for(int y = 0; y < 8; y++) {
-            for(int x = 0; x < 16; x++) {
-                int8_t yuv_y = m_block_data[x/8][y*8+x%8];
-                int8_t yuv_u = m_block_data[2][y*8+x/2];
-                int8_t yuv_v = values[y*8+x/2];
-                convYUVtoRGB(rgb, yuv_y, yuv_u, yuv_v);
-                onResult(mcu_x * 16 + x, mcu_y * 8 + y, rgb);
-            }
-        }
-    } else if (yblock == 4) {
-        for(int y = 0; y < 16; y++) {
-            for(int x = 0; x < 16; x++) {
-                int8_t yuv_y = m_block_data[(y/8)*2+x/8][(y%8)*8+x%8];
-                int8_t yuv_u = m_block_data[4][(y/2)*8+x/2];
-                int8_t yuv_v = values[(y/2)*8+x/2];
-                convYUVtoRGB(rgb, yuv_y, yuv_u, yuv_v);
-                onResult(mcu_x * 16 + x, mcu_y * 16 + y, rgb);
-            }
-        }
-    } else {
-        ASSERT(yblock == 2 || yblock == 4);
-    }    
-}
-
-void SimpleJpegDecode::outputBLOCK(int mcu, int block, int8_t* values)
-{
-    BLOCK_count++;
-    if (m_output_mode == YUV) {
-        format_YUV(mcu, block, values);
-    } else if (m_output_mode == RGB24) {
-        format_RGB24(mcu, block, values);
-    } else {
-        ASSERT(m_output_mode == YUV || m_output_mode == RGB24);
-    }    
-}
-
-void SimpleJpegDecode::onResult(int x, int y, uint8_t* yuv)
-{
-  if(m_pCbItem && m_pCbMeth)
-    (m_pCbItem->*m_pCbMeth)(x, y, yuv);
-  else if(m_pCb)
-    m_pCb(x, y, yuv);
-}
-
-void SimpleJpegDecode::setOnResult( void (*pMethod)(int, int, uint8_t*) )
-{
-  m_pCb = pMethod;
-  m_pCbItem = NULL;
-  m_pCbMeth = NULL;
-}
-
-void SimpleJpegDecode::clearOnResult()
-{
-  m_pCb = NULL;
-  m_pCbItem = NULL;
-  m_pCbMeth = NULL;
-}