1 files changed, 127 insertions, 0 deletions
diff --git a/core/fxcodec/codec/ccodec_bmpmodule.cpp b/core/fxcodec/codec/ccodec_bmpmodule.cpp
new file mode 100644
index 0000000000..c6ebd2d939
--- /dev/null
+++ b/core/fxcodec/codec/ccodec_bmpmodule.cpp
@@ -0,0 +1,127 @@
+// 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 "core/fxcodec/codec/ccodec_bmpmodule.h"
+
+#include "core/fxcodec/codec/codec_int.h"
+#include "core/fxcodec/fx_codec.h"
+#include "core/fxcodec/lbmp/fx_bmp.h"
+#include "core/fxge/fx_dib.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) {
+  FX_Free(p);
+}
+};
+static void bmp_error_data(bmp_decompress_struct_p bmp_ptr,
+                           const FX_CHAR* 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,
+                              int32_t row_num,
+                              uint8_t* 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 bool bmp_get_data_position(bmp_decompress_struct_p bmp_ptr,
+                                  uint32_t 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);
+}
+
+FXBMP_Context* CCodec_BmpModule::Start(void* pModule) {
+  FXBMP_Context* p = FX_Alloc(FXBMP_Context, 1);
+  if (!p)
+    return nullptr;
+
+  FXSYS_memset(p, 0, sizeof(FXBMP_Context));
+  if (!p)
+    return nullptr;
+
+  p->m_AllocFunc = bmp_alloc_func;
+  p->m_FreeFunc = bmp_free_func;
+  p->bmp_ptr = nullptr;
+  p->parent_ptr = (void*)this;
+  p->child_ptr = pModule;
+  p->bmp_ptr = bmp_create_decompress();
+  if (!p->bmp_ptr) {
+    FX_Free(p);
+    return nullptr;
+  }
+  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(FXBMP_Context* ctx) {
+  if (ctx) {
+    bmp_destroy_decompress(&ctx->bmp_ptr);
+    ctx->m_FreeFunc(ctx);
+  }
+}
+int32_t CCodec_BmpModule::ReadHeader(FXBMP_Context* ctx,
+                                     int32_t* width,
+                                     int32_t* height,
+                                     bool* tb_flag,
+                                     int32_t* components,
+                                     int32_t* pal_num,
+                                     uint32_t** pal_pp,
+                                     CFX_DIBAttribute* pAttribute) {
+  if (setjmp(ctx->bmp_ptr->jmpbuf)) {
+    return 0;
+  }
+  int32_t ret = bmp_read_header(ctx->bmp_ptr);
+  if (ret != 1) {
+    return ret;
+  }
+  *width = ctx->bmp_ptr->width;
+  *height = ctx->bmp_ptr->height;
+  *tb_flag = ctx->bmp_ptr->imgTB_flag;
+  *components = ctx->bmp_ptr->components;
+  *pal_num = ctx->bmp_ptr->pal_num;
+  *pal_pp = ctx->bmp_ptr->pal_ptr;
+  if (pAttribute) {
+    pAttribute->m_wDPIUnit = FXCODEC_RESUNIT_METER;
+    pAttribute->m_nXDPI = ctx->bmp_ptr->dpi_x;
+    pAttribute->m_nYDPI = ctx->bmp_ptr->dpi_y;
+    pAttribute->m_nBmpCompressType = ctx->bmp_ptr->compress_flag;
+  }
+  return 1;
+}
+
+int32_t CCodec_BmpModule::LoadImage(FXBMP_Context* ctx) {
+  if (setjmp(ctx->bmp_ptr->jmpbuf))
+    return 0;
+  return bmp_decode_image(ctx->bmp_ptr);
+}
+
+uint32_t CCodec_BmpModule::GetAvailInput(FXBMP_Context* ctx,
+                                         uint8_t** avail_buf_ptr) {
+  return bmp_get_avail_input(ctx->bmp_ptr, avail_buf_ptr);
+}
+
+void CCodec_BmpModule::Input(FXBMP_Context* ctx,
+                             const uint8_t* src_buf,
+                             uint32_t src_size) {
+  bmp_input_buffer(ctx->bmp_ptr, (uint8_t*)src_buf, src_size);
+}