diff options
Diffstat (limited to 'core/src/fxcodec/codec/fx_codec_png.cpp')
| -rw-r--r-- | core/src/fxcodec/codec/fx_codec_png.cpp | 428 |
1 files changed, 216 insertions, 212 deletions
diff --git a/core/src/fxcodec/codec/fx_codec_png.cpp b/core/src/fxcodec/codec/fx_codec_png.cpp index b96ccf6dec..f824414c8e 100644 --- a/core/src/fxcodec/codec/fx_codec_png.cpp +++ b/core/src/fxcodec/codec/fx_codec_png.cpp @@ -11,238 +11,242 @@ extern "C" { #undef FAR
#include "../fx_lpng/include/fx_png.h"
}
-static void _png_error_data(png_structp png_ptr, png_const_charp error_msg)
-{
- if(png_get_error_ptr(png_ptr)) {
- FXSYS_strncpy((char*)png_get_error_ptr(png_ptr), error_msg, PNG_ERROR_SIZE - 1);
- }
- longjmp(png_jmpbuf(png_ptr), 1);
-}
-static void _png_warning_data(png_structp png_ptr, png_const_charp error_msg)
-{
+static void _png_error_data(png_structp png_ptr, png_const_charp error_msg) {
+ if (png_get_error_ptr(png_ptr)) {
+ FXSYS_strncpy((char*)png_get_error_ptr(png_ptr), error_msg,
+ PNG_ERROR_SIZE - 1);
+ }
+ longjmp(png_jmpbuf(png_ptr), 1);
}
-static void _png_load_bmp_attribute(png_structp png_ptr, png_infop info_ptr, CFX_DIBAttribute* pAttribute)
-{
- if (pAttribute) {
+static void _png_warning_data(png_structp png_ptr, png_const_charp error_msg) {}
+static void _png_load_bmp_attribute(png_structp png_ptr,
+ png_infop info_ptr,
+ CFX_DIBAttribute* pAttribute) {
+ if (pAttribute) {
#if defined(PNG_pHYs_SUPPORTED)
- pAttribute->m_nXDPI = png_get_x_pixels_per_meter(png_ptr, info_ptr);
- pAttribute->m_nYDPI = png_get_y_pixels_per_meter(png_ptr, info_ptr);
- png_uint_32 res_x, res_y;
- int unit_type;
- png_get_pHYs(png_ptr, info_ptr, &res_x, &res_y, &unit_type);
- switch (unit_type) {
- case PNG_RESOLUTION_METER:
- pAttribute->m_wDPIUnit = FXCODEC_RESUNIT_METER;
- break;
- default:
- pAttribute->m_wDPIUnit = FXCODEC_RESUNIT_NONE;
- }
+ pAttribute->m_nXDPI = png_get_x_pixels_per_meter(png_ptr, info_ptr);
+ pAttribute->m_nYDPI = png_get_y_pixels_per_meter(png_ptr, info_ptr);
+ png_uint_32 res_x, res_y;
+ int unit_type;
+ png_get_pHYs(png_ptr, info_ptr, &res_x, &res_y, &unit_type);
+ switch (unit_type) {
+ case PNG_RESOLUTION_METER:
+ pAttribute->m_wDPIUnit = FXCODEC_RESUNIT_METER;
+ break;
+ default:
+ pAttribute->m_wDPIUnit = FXCODEC_RESUNIT_NONE;
+ }
#endif
#if defined(PNG_iCCP_SUPPORTED)
- png_charp icc_name;
- png_bytep icc_profile;
- png_uint_32 icc_proflen;
- int compress_type;
- png_get_iCCP(png_ptr, info_ptr, &icc_name, &compress_type, &icc_profile, &icc_proflen);
+ png_charp icc_name;
+ png_bytep icc_profile;
+ png_uint_32 icc_proflen;
+ int compress_type;
+ png_get_iCCP(png_ptr, info_ptr, &icc_name, &compress_type, &icc_profile,
+ &icc_proflen);
#endif
- int bTime = 0;
+ int bTime = 0;
#if defined(PNG_tIME_SUPPORTED)
- png_timep t = NULL;
- png_get_tIME(png_ptr, info_ptr, &t);
- if (t) {
- FXSYS_memset(pAttribute->m_strTime, 0, sizeof(pAttribute->m_strTime));
- FXSYS_snprintf((FX_CHAR*)pAttribute->m_strTime, sizeof(pAttribute->m_strTime), "%4d:%2d:%2d %2d:%2d:%2d",
- t->year, t->month, t->day, t->hour, t->minute, t->second);
- pAttribute->m_strTime[sizeof(pAttribute->m_strTime) - 1] = 0;
- bTime = 1;
- }
+ png_timep t = NULL;
+ png_get_tIME(png_ptr, info_ptr, &t);
+ if (t) {
+ FXSYS_memset(pAttribute->m_strTime, 0, sizeof(pAttribute->m_strTime));
+ FXSYS_snprintf((FX_CHAR*)pAttribute->m_strTime,
+ sizeof(pAttribute->m_strTime), "%4d:%2d:%2d %2d:%2d:%2d",
+ t->year, t->month, t->day, t->hour, t->minute, t->second);
+ pAttribute->m_strTime[sizeof(pAttribute->m_strTime) - 1] = 0;
+ bTime = 1;
+ }
#endif
#if defined(PNG_TEXT_SUPPORTED)
- int i;
- FX_DWORD len;
- const FX_CHAR* buf;
- int num_text;
- png_textp text = NULL;
- png_get_text(png_ptr, info_ptr, &text, &num_text);
- for (i = 0; i < num_text; i++) {
- len = (FX_DWORD)FXSYS_strlen(text[i].key);
- buf = "Time";
- if (!FXSYS_memcmp(buf, text[i].key, FX_MIN(len, FXSYS_strlen(buf)))) {
- if (!bTime) {
- FXSYS_memset(pAttribute->m_strTime, 0, sizeof(pAttribute->m_strTime));
- FXSYS_memcpy(pAttribute->m_strTime, text[i].text,
- FX_MIN(sizeof(pAttribute->m_strTime) - 1, text[i].text_length));
- }
- } else {
- buf = "Author";
- if (!FXSYS_memcmp(buf, text[i].key, FX_MIN(len, FXSYS_strlen(buf)))) {
- pAttribute->m_strAuthor.Empty();
- pAttribute->m_strAuthor.Load((uint8_t*)text[i].text, (FX_STRSIZE)text[i].text_length);
- }
- }
+ int i;
+ FX_DWORD len;
+ const FX_CHAR* buf;
+ int num_text;
+ png_textp text = NULL;
+ png_get_text(png_ptr, info_ptr, &text, &num_text);
+ for (i = 0; i < num_text; i++) {
+ len = (FX_DWORD)FXSYS_strlen(text[i].key);
+ buf = "Time";
+ if (!FXSYS_memcmp(buf, text[i].key, FX_MIN(len, FXSYS_strlen(buf)))) {
+ if (!bTime) {
+ FXSYS_memset(pAttribute->m_strTime, 0, sizeof(pAttribute->m_strTime));
+ FXSYS_memcpy(
+ pAttribute->m_strTime, text[i].text,
+ FX_MIN(sizeof(pAttribute->m_strTime) - 1, text[i].text_length));
}
-#endif
+ } else {
+ buf = "Author";
+ if (!FXSYS_memcmp(buf, text[i].key, FX_MIN(len, FXSYS_strlen(buf)))) {
+ pAttribute->m_strAuthor.Empty();
+ pAttribute->m_strAuthor.Load((uint8_t*)text[i].text,
+ (FX_STRSIZE)text[i].text_length);
+ }
+ }
}
+#endif
+ }
}
struct FXPNG_Context {
- png_structp png_ptr;
- png_infop info_ptr;
- void* parent_ptr;
- void* child_ptr;
+ png_structp png_ptr;
+ png_infop info_ptr;
+ void* parent_ptr;
+ void* child_ptr;
- void* (*m_AllocFunc)(unsigned int);
- void (*m_FreeFunc)(void*);
+ void* (*m_AllocFunc)(unsigned int);
+ void (*m_FreeFunc)(void*);
};
extern "C" {
- static void* _png_alloc_func(unsigned int size)
- {
- return FX_Alloc(char, size);
- }
- static void _png_free_func(void* p)
- {
- if(p != NULL) {
- FX_Free(p);
- }
- }
+static void* _png_alloc_func(unsigned int size) {
+ return FX_Alloc(char, size);
+}
+static void _png_free_func(void* p) {
+ if (p != NULL) {
+ FX_Free(p);
+ }
+}
};
-static void _png_get_header_func(png_structp png_ptr, png_infop info_ptr)
-{
- FXPNG_Context* p = (FXPNG_Context*)png_get_progressive_ptr(png_ptr);
- if(p == NULL) {
- return;
- }
- CCodec_PngModule* pModule = (CCodec_PngModule*)p->parent_ptr;
- if(pModule == NULL) {
- return;
- }
- png_uint_32 width = 0, height = 0;
- int bpc = 0, color_type = 0 , color_type1 = 0, pass = 0;
- double gamma = 1.0;
- png_get_IHDR(png_ptr, info_ptr, &width, &height, &bpc, &color_type, NULL, NULL, NULL);
- color_type1 = color_type;
- if(bpc > 8) {
- png_set_strip_16(png_ptr);
- } else if(bpc < 8) {
- png_set_expand_gray_1_2_4_to_8(png_ptr);
- }
- bpc = 8;
- if(color_type == PNG_COLOR_TYPE_PALETTE) {
- png_set_palette_to_rgb(png_ptr);
- }
- pass = png_set_interlace_handling(png_ptr);
- if(!pModule->ReadHeaderCallback(p->child_ptr, width, height, bpc, pass, &color_type, &gamma)) {
- png_error(p->png_ptr, "Read Header Callback Error");
- }
- int intent;
- if (png_get_sRGB(png_ptr, info_ptr, &intent)) {
- png_set_gamma(png_ptr, gamma, 0.45455);
+static void _png_get_header_func(png_structp png_ptr, png_infop info_ptr) {
+ FXPNG_Context* p = (FXPNG_Context*)png_get_progressive_ptr(png_ptr);
+ if (p == NULL) {
+ return;
+ }
+ CCodec_PngModule* pModule = (CCodec_PngModule*)p->parent_ptr;
+ if (pModule == NULL) {
+ return;
+ }
+ png_uint_32 width = 0, height = 0;
+ int bpc = 0, color_type = 0, color_type1 = 0, pass = 0;
+ double gamma = 1.0;
+ png_get_IHDR(png_ptr, info_ptr, &width, &height, &bpc, &color_type, NULL,
+ NULL, NULL);
+ color_type1 = color_type;
+ if (bpc > 8) {
+ png_set_strip_16(png_ptr);
+ } else if (bpc < 8) {
+ png_set_expand_gray_1_2_4_to_8(png_ptr);
+ }
+ bpc = 8;
+ if (color_type == PNG_COLOR_TYPE_PALETTE) {
+ png_set_palette_to_rgb(png_ptr);
+ }
+ pass = png_set_interlace_handling(png_ptr);
+ if (!pModule->ReadHeaderCallback(p->child_ptr, width, height, bpc, pass,
+ &color_type, &gamma)) {
+ png_error(p->png_ptr, "Read Header Callback Error");
+ }
+ int intent;
+ if (png_get_sRGB(png_ptr, info_ptr, &intent)) {
+ png_set_gamma(png_ptr, gamma, 0.45455);
+ } else {
+ double image_gamma;
+ if (png_get_gAMA(png_ptr, info_ptr, &image_gamma)) {
+ png_set_gamma(png_ptr, gamma, image_gamma);
} else {
- double image_gamma;
- if(png_get_gAMA(png_ptr, info_ptr, &image_gamma)) {
- png_set_gamma(png_ptr, gamma, image_gamma);
- } else {
- png_set_gamma(png_ptr, gamma, 0.45455);
- }
- }
- switch(color_type) {
- case PNG_COLOR_TYPE_GRAY:
- case PNG_COLOR_TYPE_GRAY_ALPHA: {
- if(color_type1 & PNG_COLOR_MASK_COLOR) {
- png_set_rgb_to_gray(png_ptr, 1, 0.299, 0.587);
- }
- }
- break;
- case PNG_COLOR_TYPE_PALETTE:
- if(color_type1 != PNG_COLOR_TYPE_PALETTE) {
- png_error(p->png_ptr, "Not Support Output Palette Now");
- }
- case PNG_COLOR_TYPE_RGB:
- case PNG_COLOR_TYPE_RGB_ALPHA:
- if(!(color_type1 & PNG_COLOR_MASK_COLOR)) {
- png_set_gray_to_rgb(png_ptr);
- }
- png_set_bgr(png_ptr);
- break;
- }
- if(!(color_type & PNG_COLOR_MASK_ALPHA)) {
- png_set_strip_alpha(png_ptr);
- }
- if(color_type & PNG_COLOR_MASK_ALPHA && !(color_type1 & PNG_COLOR_MASK_ALPHA)) {
- png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER);
- }
- png_read_update_info(png_ptr, info_ptr);
+ png_set_gamma(png_ptr, gamma, 0.45455);
+ }
+ }
+ switch (color_type) {
+ case PNG_COLOR_TYPE_GRAY:
+ case PNG_COLOR_TYPE_GRAY_ALPHA: {
+ if (color_type1 & PNG_COLOR_MASK_COLOR) {
+ png_set_rgb_to_gray(png_ptr, 1, 0.299, 0.587);
+ }
+ } break;
+ case PNG_COLOR_TYPE_PALETTE:
+ if (color_type1 != PNG_COLOR_TYPE_PALETTE) {
+ png_error(p->png_ptr, "Not Support Output Palette Now");
+ }
+ case PNG_COLOR_TYPE_RGB:
+ case PNG_COLOR_TYPE_RGB_ALPHA:
+ if (!(color_type1 & PNG_COLOR_MASK_COLOR)) {
+ png_set_gray_to_rgb(png_ptr);
+ }
+ png_set_bgr(png_ptr);
+ break;
+ }
+ if (!(color_type & PNG_COLOR_MASK_ALPHA)) {
+ png_set_strip_alpha(png_ptr);
+ }
+ if (color_type & PNG_COLOR_MASK_ALPHA &&
+ !(color_type1 & PNG_COLOR_MASK_ALPHA)) {
+ png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER);
+ }
+ png_read_update_info(png_ptr, info_ptr);
}
static void _png_get_end_func(png_structp png_ptr, png_infop info_ptr) {}
-static void _png_get_row_func(png_structp png_ptr, png_bytep new_row, png_uint_32 row_num, int pass)
-{
- FXPNG_Context* p = (FXPNG_Context*)png_get_progressive_ptr(png_ptr);
- if(p == NULL) {
- return;
- }
- CCodec_PngModule* pModule = (CCodec_PngModule*)p->parent_ptr;
- uint8_t* src_buf = NULL;
- if(!pModule->AskScanlineBufCallback(p->child_ptr, row_num, src_buf)) {
- png_error(png_ptr, "Ask Scanline buffer Callback Error");
- }
- if(src_buf != NULL) {
- png_progressive_combine_row(png_ptr, src_buf, new_row);
- }
- pModule->FillScanlineBufCompletedCallback(p->child_ptr, pass, row_num);
+static void _png_get_row_func(png_structp png_ptr,
+ png_bytep new_row,
+ png_uint_32 row_num,
+ int pass) {
+ FXPNG_Context* p = (FXPNG_Context*)png_get_progressive_ptr(png_ptr);
+ if (p == NULL) {
+ return;
+ }
+ CCodec_PngModule* pModule = (CCodec_PngModule*)p->parent_ptr;
+ uint8_t* src_buf = NULL;
+ if (!pModule->AskScanlineBufCallback(p->child_ptr, row_num, src_buf)) {
+ png_error(png_ptr, "Ask Scanline buffer Callback Error");
+ }
+ if (src_buf != NULL) {
+ png_progressive_combine_row(png_ptr, src_buf, new_row);
+ }
+ pModule->FillScanlineBufCompletedCallback(p->child_ptr, pass, row_num);
}
-void* CCodec_PngModule::Start(void* pModule)
-{
- FXPNG_Context* p = (FXPNG_Context*)FX_Alloc(uint8_t, sizeof(FXPNG_Context));
- if(p == NULL) {
- return NULL;
- }
- p->m_AllocFunc = _png_alloc_func;
- p->m_FreeFunc = _png_free_func;
- p->png_ptr = NULL;
- p->info_ptr = NULL;
- p->parent_ptr = (void*)this;
- p->child_ptr = pModule;
- p->png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
- if (p->png_ptr == NULL) {
- FX_Free(p);
- return NULL;
- }
- p->info_ptr = png_create_info_struct(p->png_ptr);
- if (p->info_ptr == NULL) {
- png_destroy_read_struct(&(p->png_ptr), (png_infopp)NULL, (png_infopp)NULL);
- FX_Free(p);
- return NULL;
- }
- if (setjmp(png_jmpbuf(p->png_ptr))) {
- if(p != NULL) {
- png_destroy_read_struct(&(p->png_ptr), &(p->info_ptr), (png_infopp)NULL);
- FX_Free(p);
- }
- return NULL;
- }
- png_set_progressive_read_fn(p->png_ptr, p,
- _png_get_header_func,
- _png_get_row_func,
- _png_get_end_func);
- png_set_error_fn(p->png_ptr, m_szLastError, (png_error_ptr)_png_error_data, (png_error_ptr)_png_warning_data);
- return p;
+void* CCodec_PngModule::Start(void* pModule) {
+ FXPNG_Context* p = (FXPNG_Context*)FX_Alloc(uint8_t, sizeof(FXPNG_Context));
+ if (p == NULL) {
+ return NULL;
+ }
+ p->m_AllocFunc = _png_alloc_func;
+ p->m_FreeFunc = _png_free_func;
+ p->png_ptr = NULL;
+ p->info_ptr = NULL;
+ p->parent_ptr = (void*)this;
+ p->child_ptr = pModule;
+ p->png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ if (p->png_ptr == NULL) {
+ FX_Free(p);
+ return NULL;
+ }
+ p->info_ptr = png_create_info_struct(p->png_ptr);
+ if (p->info_ptr == NULL) {
+ png_destroy_read_struct(&(p->png_ptr), (png_infopp)NULL, (png_infopp)NULL);
+ FX_Free(p);
+ return NULL;
+ }
+ if (setjmp(png_jmpbuf(p->png_ptr))) {
+ if (p != NULL) {
+ png_destroy_read_struct(&(p->png_ptr), &(p->info_ptr), (png_infopp)NULL);
+ FX_Free(p);
+ }
+ return NULL;
+ }
+ png_set_progressive_read_fn(p->png_ptr, p, _png_get_header_func,
+ _png_get_row_func, _png_get_end_func);
+ png_set_error_fn(p->png_ptr, m_szLastError, (png_error_ptr)_png_error_data,
+ (png_error_ptr)_png_warning_data);
+ return p;
}
-void CCodec_PngModule::Finish(void* pContext)
-{
- FXPNG_Context* p = (FXPNG_Context*)pContext;
- if(p != NULL) {
- png_destroy_read_struct(&(p->png_ptr), &(p->info_ptr), (png_infopp)NULL);
- p->m_FreeFunc(p);
- }
+void CCodec_PngModule::Finish(void* pContext) {
+ FXPNG_Context* p = (FXPNG_Context*)pContext;
+ if (p != NULL) {
+ png_destroy_read_struct(&(p->png_ptr), &(p->info_ptr), (png_infopp)NULL);
+ p->m_FreeFunc(p);
+ }
}
-FX_BOOL CCodec_PngModule::Input(void* pContext, const uint8_t* src_buf, FX_DWORD src_size, CFX_DIBAttribute* pAttribute)
-{
- FXPNG_Context* p = (FXPNG_Context*)pContext;
- if(setjmp(png_jmpbuf(p->png_ptr))) {
- if (pAttribute && 0 == FXSYS_strcmp(m_szLastError, "Read Header Callback Error")) {
- _png_load_bmp_attribute(p->png_ptr, p->info_ptr, pAttribute);
- }
- return FALSE;
- }
- png_process_data(p->png_ptr, p->info_ptr, (uint8_t*)src_buf, src_size);
- return TRUE;
+FX_BOOL CCodec_PngModule::Input(void* pContext,
+ const uint8_t* src_buf,
+ FX_DWORD src_size,
+ CFX_DIBAttribute* pAttribute) {
+ FXPNG_Context* p = (FXPNG_Context*)pContext;
+ if (setjmp(png_jmpbuf(p->png_ptr))) {
+ if (pAttribute &&
+ 0 == FXSYS_strcmp(m_szLastError, "Read Header Callback Error")) {
+ _png_load_bmp_attribute(p->png_ptr, p->info_ptr, pAttribute);
+ }
+ return FALSE;
+ }
+ png_process_data(p->png_ptr, p->info_ptr, (uint8_t*)src_buf, src_size);
+ return TRUE;
}
|