From fdc00a7042d912aafaabddae4d9c84199921ef23 Mon Sep 17 00:00:00 2001
From: Bo Xu <bo_xu@foxitsoftware.com>
Date: Tue, 28 Oct 2014 23:03:33 -0700
Subject: Merge XFA to PDFium master at 4dc95e7 on 10/28/2014

---
 core/src/fxcodec/codec/fx_codec_bmp.cpp | 124 ++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 core/src/fxcodec/codec/fx_codec_bmp.cpp

(limited to 'core/src/fxcodec/codec/fx_codec_bmp.cpp')

diff --git a/core/src/fxcodec/codec/fx_codec_bmp.cpp b/core/src/fxcodec/codec/fx_codec_bmp.cpp
new file mode 100644
index 0000000000..4e974e2124
--- /dev/null
+++ b/core/src/fxcodec/codec/fx_codec_bmp.cpp
@@ -0,0 +1,124 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../../../include/fxcodec/fx_codec.h"
+#include "../../../include/fxge/fx_dib.h"
+#include "codec_int.h"
+#include "../lbmp/fx_bmp.h"
+struct FXBMP_Context {
+    bmp_decompress_struct_p bmp_ptr;
+    void*		parent_ptr;
+    void*		child_ptr;
+
+    void*		(*m_AllocFunc)(unsigned int);
+    void		(*m_FreeFunc)(void*);
+};
+extern "C" {
+    static void* _bmp_alloc_func(unsigned int size)
+    {
+        return FX_Alloc(char, size);
+    }
+    static void  _bmp_free_func(void* p)
+    {
+        if(p != NULL) {
+            FX_Free(p);
+        }
+    }
+};
+static void _bmp_error_data(bmp_decompress_struct_p bmp_ptr, FX_LPCSTR err_msg)
+{
+    FXSYS_strncpy((char*)bmp_ptr->err_ptr, err_msg, BMP_MAX_ERROR_SIZE - 1);
+    longjmp(bmp_ptr->jmpbuf, 1);
+}
+static void _bmp_read_scanline(bmp_decompress_struct_p bmp_ptr, FX_INT32 row_num, FX_LPBYTE row_buf)
+{
+    FXBMP_Context* p = (FXBMP_Context*)bmp_ptr->context_ptr;
+    CCodec_BmpModule* pModule = (CCodec_BmpModule*)p->parent_ptr;
+    pModule->ReadScanlineCallback(p->child_ptr, row_num, row_buf);
+}
+static FX_BOOL _bmp_get_data_position(bmp_decompress_struct_p bmp_ptr, FX_DWORD rcd_pos)
+{
+    FXBMP_Context* p = (FXBMP_Context*)bmp_ptr->context_ptr;
+    CCodec_BmpModule* pModule = (CCodec_BmpModule*)p->parent_ptr;
+    return pModule->InputImagePositionBufCallback(p->child_ptr, rcd_pos);
+}
+void* CCodec_BmpModule::Start(void* pModule)
+{
+    FXBMP_Context* p = (FXBMP_Context*)FX_Alloc(FX_BYTE, sizeof(FXBMP_Context));
+    if (p == NULL) {
+        return NULL;
+    }
+    FXSYS_memset32(p, 0, sizeof(FXBMP_Context));
+    if(p == NULL) {
+        return NULL;
+    }
+    p->m_AllocFunc = _bmp_alloc_func;
+    p->m_FreeFunc = _bmp_free_func;
+    p->bmp_ptr = NULL;
+    p->parent_ptr = (void*)this;
+    p->child_ptr = pModule;
+    p->bmp_ptr = _bmp_create_decompress();
+    if (p->bmp_ptr == NULL) {
+        FX_Free(p);
+        return NULL;
+    }
+    p->bmp_ptr->context_ptr = (void*)p;
+    p->bmp_ptr->err_ptr = m_szLastError;
+    p->bmp_ptr->_bmp_error_fn = _bmp_error_data;
+    p->bmp_ptr->_bmp_get_row_fn = _bmp_read_scanline;
+    p->bmp_ptr->_bmp_get_data_position_fn = _bmp_get_data_position;
+    return p;
+}
+void CCodec_BmpModule::Finish(void* pContext)
+{
+    FXBMP_Context* p = (FXBMP_Context*)pContext;
+    if(p != NULL) {
+        _bmp_destroy_decompress(&p->bmp_ptr);
+        p->m_FreeFunc(p);
+    }
+}
+FX_INT32 CCodec_BmpModule::ReadHeader(void* pContext, FX_INT32* width, FX_INT32* height, FX_BOOL* tb_flag, FX_INT32* components, FX_INT32* pal_num, FX_DWORD** pal_pp, CFX_DIBAttribute* pAttribute)
+{
+    FXBMP_Context* p = (FXBMP_Context*)pContext;
+    if(setjmp(p->bmp_ptr->jmpbuf)) {
+        return 0;
+    }
+    FX_INT32 ret = _bmp_read_header(p->bmp_ptr);
+    if (ret != 1) {
+        return ret;
+    }
+    *width = p->bmp_ptr->width;
+    *height = p->bmp_ptr->height;
+    *tb_flag = p->bmp_ptr->imgTB_flag;
+    *components = p->bmp_ptr->components;
+    *pal_num = p->bmp_ptr->pal_num;
+    *pal_pp = p->bmp_ptr->pal_ptr;
+    if (pAttribute) {
+        pAttribute->m_wDPIUnit = FXCODEC_RESUNIT_METER;
+        pAttribute->m_nXDPI = p->bmp_ptr->dpi_x;
+        pAttribute->m_nYDPI = p->bmp_ptr->dpi_y;
+        pAttribute->m_nBmpCompressType = p->bmp_ptr->compress_flag;
+    }
+    return 1;
+}
+FX_INT32 CCodec_BmpModule::LoadImage(void* pContext)
+{
+    FXBMP_Context* p = (FXBMP_Context*)pContext;
+    if(setjmp(p->bmp_ptr->jmpbuf)) {
+        return 0;
+    }
+    return _bmp_decode_image(p->bmp_ptr);
+}
+FX_DWORD CCodec_BmpModule::GetAvailInput(void* pContext, FX_LPBYTE* avial_buf_ptr)
+{
+    FXBMP_Context* p = (FXBMP_Context*)pContext;
+    return _bmp_get_avail_input(p->bmp_ptr, avial_buf_ptr);
+}
+void CCodec_BmpModule::Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size)
+{
+    FXBMP_Context* p = (FXBMP_Context*)pContext;
+    _bmp_input_buffer(p->bmp_ptr, (FX_LPBYTE)src_buf, src_size);
+}
-- 
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