595 lines
20 KiB
C
595 lines
20 KiB
C
// Copyright 2016 Google Inc. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the COPYING file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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// -----------------------------------------------------------------------------
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//
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// Save image
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#include "./image_enc.h"
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#include <assert.h>
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#include <string.h>
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#ifdef WEBP_HAVE_PNG
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#include <png.h>
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#include <setjmp.h> // note: this must be included *after* png.h
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#endif
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#ifdef HAVE_WINCODEC_H
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#ifdef __MINGW32__
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#define INITGUID // Without this GUIDs are declared extern and fail to link
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#endif
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#define CINTERFACE
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#define COBJMACROS
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#define _WIN32_IE 0x500 // Workaround bug in shlwapi.h when compiling C++
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// code with COBJMACROS.
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#include <ole2.h> // CreateStreamOnHGlobal()
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#include <shlwapi.h>
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#include <windows.h>
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#include <wincodec.h>
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#endif
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#include "./imageio_util.h"
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//------------------------------------------------------------------------------
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// PNG
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#ifdef HAVE_WINCODEC_H
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#define IFS(fn) \
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do { \
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if (SUCCEEDED(hr)) { \
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hr = (fn); \
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if (FAILED(hr)) fprintf(stderr, #fn " failed %08lx\n", hr); \
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} \
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} while (0)
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#ifdef __cplusplus
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#define MAKE_REFGUID(x) (x)
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#else
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#define MAKE_REFGUID(x) &(x)
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#endif
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static HRESULT CreateOutputStream(const char* out_file_name,
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int write_to_mem, IStream** stream) {
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HRESULT hr = S_OK;
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if (write_to_mem) {
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// Output to a memory buffer. This is freed when 'stream' is released.
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IFS(CreateStreamOnHGlobal(NULL, TRUE, stream));
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} else {
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IFS(SHCreateStreamOnFileA(out_file_name, STGM_WRITE | STGM_CREATE, stream));
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}
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if (FAILED(hr)) {
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fprintf(stderr, "Error opening output file %s (%08lx)\n",
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out_file_name, hr);
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}
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return hr;
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}
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static HRESULT WriteUsingWIC(const char* out_file_name, int use_stdout,
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REFGUID container_guid,
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uint8_t* rgb, int stride,
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uint32_t width, uint32_t height, int has_alpha) {
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HRESULT hr = S_OK;
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IWICImagingFactory* factory = NULL;
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IWICBitmapFrameEncode* frame = NULL;
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IWICBitmapEncoder* encoder = NULL;
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IStream* stream = NULL;
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WICPixelFormatGUID pixel_format = has_alpha ? GUID_WICPixelFormat32bppBGRA
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: GUID_WICPixelFormat24bppBGR;
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if (out_file_name == NULL || rgb == NULL) return E_INVALIDARG;
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IFS(CoInitialize(NULL));
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IFS(CoCreateInstance(MAKE_REFGUID(CLSID_WICImagingFactory), NULL,
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CLSCTX_INPROC_SERVER,
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MAKE_REFGUID(IID_IWICImagingFactory),
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(LPVOID*)&factory));
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if (hr == REGDB_E_CLASSNOTREG) {
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fprintf(stderr,
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"Couldn't access Windows Imaging Component (are you running "
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"Windows XP SP3 or newer?). PNG support not available. "
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"Use -ppm or -pgm for available PPM and PGM formats.\n");
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}
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IFS(CreateOutputStream(out_file_name, use_stdout, &stream));
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IFS(IWICImagingFactory_CreateEncoder(factory, container_guid, NULL,
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&encoder));
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IFS(IWICBitmapEncoder_Initialize(encoder, stream,
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WICBitmapEncoderNoCache));
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IFS(IWICBitmapEncoder_CreateNewFrame(encoder, &frame, NULL));
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IFS(IWICBitmapFrameEncode_Initialize(frame, NULL));
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IFS(IWICBitmapFrameEncode_SetSize(frame, width, height));
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IFS(IWICBitmapFrameEncode_SetPixelFormat(frame, &pixel_format));
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IFS(IWICBitmapFrameEncode_WritePixels(frame, height, stride,
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height * stride, rgb));
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IFS(IWICBitmapFrameEncode_Commit(frame));
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IFS(IWICBitmapEncoder_Commit(encoder));
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if (SUCCEEDED(hr) && use_stdout) {
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HGLOBAL image;
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IFS(GetHGlobalFromStream(stream, &image));
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if (SUCCEEDED(hr)) {
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HANDLE std_output = GetStdHandle(STD_OUTPUT_HANDLE);
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DWORD mode;
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const BOOL update_mode = GetConsoleMode(std_output, &mode);
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const void* const image_mem = GlobalLock(image);
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DWORD bytes_written = 0;
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// Clear output processing if necessary, then output the image.
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if (update_mode) SetConsoleMode(std_output, 0);
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if (!WriteFile(std_output, image_mem, (DWORD)GlobalSize(image),
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&bytes_written, NULL) ||
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bytes_written != GlobalSize(image)) {
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hr = E_FAIL;
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}
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if (update_mode) SetConsoleMode(std_output, mode);
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GlobalUnlock(image);
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}
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}
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if (frame != NULL) IUnknown_Release(frame);
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if (encoder != NULL) IUnknown_Release(encoder);
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if (factory != NULL) IUnknown_Release(factory);
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if (stream != NULL) IUnknown_Release(stream);
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return hr;
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}
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int WebPWritePNG(const char* out_file_name, int use_stdout,
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const WebPDecBuffer* const buffer) {
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const uint32_t width = buffer->width;
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const uint32_t height = buffer->height;
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uint8_t* const rgb = buffer->u.RGBA.rgba;
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const int stride = buffer->u.RGBA.stride;
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const int has_alpha = WebPIsAlphaMode(buffer->colorspace);
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return SUCCEEDED(WriteUsingWIC(out_file_name, use_stdout,
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MAKE_REFGUID(GUID_ContainerFormatPng),
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rgb, stride, width, height, has_alpha));
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}
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#elif defined(WEBP_HAVE_PNG) // !HAVE_WINCODEC_H
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static void PNGAPI PNGErrorFunction(png_structp png, png_const_charp dummy) {
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(void)dummy; // remove variable-unused warning
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longjmp(png_jmpbuf(png), 1);
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}
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int WebPWritePNG(FILE* out_file, const WebPDecBuffer* const buffer) {
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const uint32_t width = buffer->width;
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const uint32_t height = buffer->height;
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png_bytep row = buffer->u.RGBA.rgba;
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const int stride = buffer->u.RGBA.stride;
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const int has_alpha = WebPIsAlphaMode(buffer->colorspace);
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volatile png_structp png;
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volatile png_infop info;
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png_uint_32 y;
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if (out_file == NULL || buffer == NULL) return 0;
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png = png_create_write_struct(PNG_LIBPNG_VER_STRING,
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NULL, PNGErrorFunction, NULL);
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if (png == NULL) {
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return 0;
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}
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info = png_create_info_struct(png);
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if (info == NULL) {
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png_destroy_write_struct((png_structpp)&png, NULL);
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return 0;
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}
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if (setjmp(png_jmpbuf(png))) {
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png_destroy_write_struct((png_structpp)&png, (png_infopp)&info);
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return 0;
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}
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png_init_io(png, out_file);
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png_set_IHDR(png, info, width, height, 8,
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has_alpha ? PNG_COLOR_TYPE_RGBA : PNG_COLOR_TYPE_RGB,
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PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
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PNG_FILTER_TYPE_DEFAULT);
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png_write_info(png, info);
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for (y = 0; y < height; ++y) {
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png_write_rows(png, &row, 1);
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row += stride;
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}
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png_write_end(png, info);
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png_destroy_write_struct((png_structpp)&png, (png_infopp)&info);
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return 1;
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}
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#else // !HAVE_WINCODEC_H && !WEBP_HAVE_PNG
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int WebPWritePNG(FILE* fout, const WebPDecBuffer* const buffer) {
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if (fout == NULL || buffer == NULL) return 0;
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fprintf(stderr, "PNG support not compiled. Please install the libpng "
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"development package before building.\n");
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fprintf(stderr, "You can run with -ppm flag to decode in PPM format.\n");
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return 0;
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}
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#endif
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//------------------------------------------------------------------------------
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// PPM / PAM
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static int WritePPMPAM(FILE* fout, const WebPDecBuffer* const buffer,
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int alpha) {
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if (fout == NULL || buffer == NULL) {
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return 0;
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} else {
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const uint32_t width = buffer->width;
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const uint32_t height = buffer->height;
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const uint8_t* row = buffer->u.RGBA.rgba;
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const int stride = buffer->u.RGBA.stride;
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const size_t bytes_per_px = alpha ? 4 : 3;
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uint32_t y;
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if (row == NULL) return 0;
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if (alpha) {
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fprintf(fout, "P7\nWIDTH %u\nHEIGHT %u\nDEPTH 4\nMAXVAL 255\n"
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"TUPLTYPE RGB_ALPHA\nENDHDR\n", width, height);
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} else {
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fprintf(fout, "P6\n%u %u\n255\n", width, height);
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}
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for (y = 0; y < height; ++y) {
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if (fwrite(row, width, bytes_per_px, fout) != bytes_per_px) {
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return 0;
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}
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row += stride;
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}
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}
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return 1;
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}
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int WebPWritePPM(FILE* fout, const WebPDecBuffer* const buffer) {
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return WritePPMPAM(fout, buffer, 0);
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}
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int WebPWritePAM(FILE* fout, const WebPDecBuffer* const buffer) {
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return WritePPMPAM(fout, buffer, 1);
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}
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//------------------------------------------------------------------------------
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// Raw PGM
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// Save 16b mode (RGBA4444, RGB565, ...) for debugging purpose.
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int WebPWrite16bAsPGM(FILE* fout, const WebPDecBuffer* const buffer) {
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const uint32_t width = buffer->width;
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const uint32_t height = buffer->height;
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const uint8_t* rgba = buffer->u.RGBA.rgba;
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const int stride = buffer->u.RGBA.stride;
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const uint32_t bytes_per_px = 2;
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uint32_t y;
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if (fout == NULL || buffer == NULL || rgba == NULL) return 0;
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fprintf(fout, "P5\n%u %u\n255\n", width * bytes_per_px, height);
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for (y = 0; y < height; ++y) {
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if (fwrite(rgba, width, bytes_per_px, fout) != bytes_per_px) {
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return 0;
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}
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rgba += stride;
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}
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return 1;
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}
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//------------------------------------------------------------------------------
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// BMP
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static void PutLE16(uint8_t* const dst, uint32_t value) {
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dst[0] = (value >> 0) & 0xff;
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dst[1] = (value >> 8) & 0xff;
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}
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static void PutLE32(uint8_t* const dst, uint32_t value) {
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PutLE16(dst + 0, (value >> 0) & 0xffff);
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PutLE16(dst + 2, (value >> 16) & 0xffff);
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}
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#define BMP_HEADER_SIZE 54
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int WebPWriteBMP(FILE* fout, const WebPDecBuffer* const buffer) {
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const int has_alpha = WebPIsAlphaMode(buffer->colorspace);
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const uint32_t width = buffer->width;
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const uint32_t height = buffer->height;
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const uint8_t* rgba = buffer->u.RGBA.rgba;
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const int stride = buffer->u.RGBA.stride;
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const uint32_t bytes_per_px = has_alpha ? 4 : 3;
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uint32_t y;
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const uint32_t line_size = bytes_per_px * width;
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const uint32_t bmp_stride = (line_size + 3) & ~3; // pad to 4
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const uint32_t total_size = bmp_stride * height + BMP_HEADER_SIZE;
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uint8_t bmp_header[BMP_HEADER_SIZE] = { 0 };
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if (fout == NULL || buffer == NULL || rgba == NULL) return 0;
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// bitmap file header
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PutLE16(bmp_header + 0, 0x4d42); // signature 'BM'
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PutLE32(bmp_header + 2, total_size); // size including header
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PutLE32(bmp_header + 6, 0); // reserved
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PutLE32(bmp_header + 10, BMP_HEADER_SIZE); // offset to pixel array
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// bitmap info header
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PutLE32(bmp_header + 14, 40); // DIB header size
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PutLE32(bmp_header + 18, width); // dimensions
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PutLE32(bmp_header + 22, -(int)height); // vertical flip!
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PutLE16(bmp_header + 26, 1); // number of planes
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PutLE16(bmp_header + 28, bytes_per_px * 8); // bits per pixel
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PutLE32(bmp_header + 30, 0); // no compression (BI_RGB)
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PutLE32(bmp_header + 34, 0); // image size (dummy)
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PutLE32(bmp_header + 38, 2400); // x pixels/meter
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PutLE32(bmp_header + 42, 2400); // y pixels/meter
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PutLE32(bmp_header + 46, 0); // number of palette colors
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PutLE32(bmp_header + 50, 0); // important color count
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// TODO(skal): color profile
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// write header
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if (fwrite(bmp_header, sizeof(bmp_header), 1, fout) != 1) {
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return 0;
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}
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// write pixel array
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for (y = 0; y < height; ++y) {
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if (fwrite(rgba, line_size, 1, fout) != 1) {
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return 0;
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}
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// write padding zeroes
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if (bmp_stride != line_size) {
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const uint8_t zeroes[3] = { 0 };
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if (fwrite(zeroes, bmp_stride - line_size, 1, fout) != 1) {
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return 0;
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}
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}
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rgba += stride;
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}
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return 1;
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}
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#undef BMP_HEADER_SIZE
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//------------------------------------------------------------------------------
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// TIFF
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#define NUM_IFD_ENTRIES 15
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#define EXTRA_DATA_SIZE 16
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// 10b for signature/header + n * 12b entries + 4b for IFD terminator:
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#define EXTRA_DATA_OFFSET (10 + 12 * NUM_IFD_ENTRIES + 4)
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#define TIFF_HEADER_SIZE (EXTRA_DATA_OFFSET + EXTRA_DATA_SIZE)
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int WebPWriteTIFF(FILE* fout, const WebPDecBuffer* const buffer) {
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const int has_alpha = WebPIsAlphaMode(buffer->colorspace);
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const uint32_t width = buffer->width;
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const uint32_t height = buffer->height;
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const uint8_t* rgba = buffer->u.RGBA.rgba;
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const int stride = buffer->u.RGBA.stride;
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const uint8_t bytes_per_px = has_alpha ? 4 : 3;
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const uint8_t assoc_alpha =
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WebPIsPremultipliedMode(buffer->colorspace) ? 1 : 2;
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// For non-alpha case, we omit tag 0x152 (ExtraSamples).
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const uint8_t num_ifd_entries = has_alpha ? NUM_IFD_ENTRIES
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: NUM_IFD_ENTRIES - 1;
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uint8_t tiff_header[TIFF_HEADER_SIZE] = {
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0x49, 0x49, 0x2a, 0x00, // little endian signature
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8, 0, 0, 0, // offset to the unique IFD that follows
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// IFD (offset = 8). Entries must be written in increasing tag order.
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num_ifd_entries, 0, // Number of entries in the IFD (12 bytes each).
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0x00, 0x01, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, // 10: Width (TBD)
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0x01, 0x01, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, // 22: Height (TBD)
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0x02, 0x01, 3, 0, bytes_per_px, 0, 0, 0, // 34: BitsPerSample: 8888
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EXTRA_DATA_OFFSET + 0, 0, 0, 0,
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0x03, 0x01, 3, 0, 1, 0, 0, 0, 1, 0, 0, 0, // 46: Compression: none
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0x06, 0x01, 3, 0, 1, 0, 0, 0, 2, 0, 0, 0, // 58: Photometric: RGB
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0x11, 0x01, 4, 0, 1, 0, 0, 0, // 70: Strips offset:
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TIFF_HEADER_SIZE, 0, 0, 0, // data follows header
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0x12, 0x01, 3, 0, 1, 0, 0, 0, 1, 0, 0, 0, // 82: Orientation: topleft
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0x15, 0x01, 3, 0, 1, 0, 0, 0, // 94: SamplesPerPixels
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bytes_per_px, 0, 0, 0,
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0x16, 0x01, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, // 106: Rows per strip (TBD)
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0x17, 0x01, 4, 0, 1, 0, 0, 0, 0, 0, 0, 0, // 118: StripByteCount (TBD)
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0x1a, 0x01, 5, 0, 1, 0, 0, 0, // 130: X-resolution
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EXTRA_DATA_OFFSET + 8, 0, 0, 0,
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0x1b, 0x01, 5, 0, 1, 0, 0, 0, // 142: Y-resolution
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EXTRA_DATA_OFFSET + 8, 0, 0, 0,
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0x1c, 0x01, 3, 0, 1, 0, 0, 0, 1, 0, 0, 0, // 154: PlanarConfiguration
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0x28, 0x01, 3, 0, 1, 0, 0, 0, 2, 0, 0, 0, // 166: ResolutionUnit (inch)
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0x52, 0x01, 3, 0, 1, 0, 0, 0,
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assoc_alpha, 0, 0, 0, // 178: ExtraSamples: rgbA/RGBA
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0, 0, 0, 0, // 190: IFD terminator
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// EXTRA_DATA_OFFSET:
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8, 0, 8, 0, 8, 0, 8, 0, // BitsPerSample
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72, 0, 0, 0, 1, 0, 0, 0 // 72 pixels/inch, for X/Y-resolution
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};
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uint32_t y;
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if (fout == NULL || buffer == NULL || rgba == NULL) return 0;
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// Fill placeholders in IFD:
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PutLE32(tiff_header + 10 + 8, width);
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PutLE32(tiff_header + 22 + 8, height);
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PutLE32(tiff_header + 106 + 8, height);
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PutLE32(tiff_header + 118 + 8, width * bytes_per_px * height);
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if (!has_alpha) PutLE32(tiff_header + 178, 0); // IFD terminator
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// write header
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if (fwrite(tiff_header, sizeof(tiff_header), 1, fout) != 1) {
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return 0;
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}
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// write pixel values
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for (y = 0; y < height; ++y) {
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if (fwrite(rgba, bytes_per_px, width, fout) != width) {
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return 0;
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}
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rgba += stride;
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}
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return 1;
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}
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#undef TIFF_HEADER_SIZE
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#undef EXTRA_DATA_OFFSET
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#undef EXTRA_DATA_SIZE
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#undef NUM_IFD_ENTRIES
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//------------------------------------------------------------------------------
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// Raw Alpha
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int WebPWriteAlphaPlane(FILE* fout, const WebPDecBuffer* const buffer) {
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if (fout == NULL || buffer == NULL) {
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return 0;
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} else {
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const uint32_t width = buffer->width;
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const uint32_t height = buffer->height;
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const uint8_t* a = buffer->u.YUVA.a;
|
|
const int a_stride = buffer->u.YUVA.a_stride;
|
|
uint32_t y;
|
|
|
|
if (a == NULL) return 0;
|
|
|
|
fprintf(fout, "P5\n%u %u\n255\n", width, height);
|
|
for (y = 0; y < height; ++y) {
|
|
if (fwrite(a, width, 1, fout) != 1) return 0;
|
|
a += a_stride;
|
|
}
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// PGM with IMC4 layout
|
|
|
|
int WebPWritePGM(FILE* fout, const WebPDecBuffer* const buffer) {
|
|
if (fout == NULL || buffer == NULL) {
|
|
return 0;
|
|
} else {
|
|
const int width = buffer->width;
|
|
const int height = buffer->height;
|
|
const WebPYUVABuffer* const yuv = &buffer->u.YUVA;
|
|
const uint8_t* src_y = yuv->y;
|
|
const uint8_t* src_u = yuv->u;
|
|
const uint8_t* src_v = yuv->v;
|
|
const uint8_t* src_a = yuv->a;
|
|
const int uv_width = (width + 1) / 2;
|
|
const int uv_height = (height + 1) / 2;
|
|
const int a_height = (src_a != NULL) ? height : 0;
|
|
int ok = 1;
|
|
int y;
|
|
|
|
if (src_y == NULL || src_u == NULL || src_v == NULL) return 0;
|
|
|
|
fprintf(fout, "P5\n%d %d\n255\n",
|
|
(width + 1) & ~1, height + uv_height + a_height);
|
|
for (y = 0; ok && y < height; ++y) {
|
|
ok &= (fwrite(src_y, width, 1, fout) == 1);
|
|
if (width & 1) fputc(0, fout); // padding byte
|
|
src_y += yuv->y_stride;
|
|
}
|
|
for (y = 0; ok && y < uv_height; ++y) {
|
|
ok &= (fwrite(src_u, uv_width, 1, fout) == 1);
|
|
ok &= (fwrite(src_v, uv_width, 1, fout) == 1);
|
|
src_u += yuv->u_stride;
|
|
src_v += yuv->v_stride;
|
|
}
|
|
for (y = 0; ok && y < a_height; ++y) {
|
|
ok &= (fwrite(src_a, width, 1, fout) == 1);
|
|
if (width & 1) fputc(0, fout); // padding byte
|
|
src_a += yuv->a_stride;
|
|
}
|
|
return ok;
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Raw YUV(A) planes
|
|
|
|
int WebPWriteYUV(FILE* fout, const WebPDecBuffer* const buffer) {
|
|
if (fout == NULL || buffer == NULL) {
|
|
return 0;
|
|
} else {
|
|
const int width = buffer->width;
|
|
const int height = buffer->height;
|
|
const WebPYUVABuffer* const yuv = &buffer->u.YUVA;
|
|
const uint8_t* src_y = yuv->y;
|
|
const uint8_t* src_u = yuv->u;
|
|
const uint8_t* src_v = yuv->v;
|
|
const uint8_t* src_a = yuv->a;
|
|
const int uv_width = (width + 1) / 2;
|
|
const int uv_height = (height + 1) / 2;
|
|
const int a_height = (src_a != NULL) ? height : 0;
|
|
int ok = 1;
|
|
int y;
|
|
|
|
if (src_y == NULL || src_u == NULL || src_v == NULL) return 0;
|
|
|
|
for (y = 0; ok && y < height; ++y) {
|
|
ok &= (fwrite(src_y, width, 1, fout) == 1);
|
|
src_y += yuv->y_stride;
|
|
}
|
|
for (y = 0; ok && y < uv_height; ++y) {
|
|
ok &= (fwrite(src_u, uv_width, 1, fout) == 1);
|
|
src_u += yuv->u_stride;
|
|
}
|
|
for (y = 0; ok && y < uv_height; ++y) {
|
|
ok &= (fwrite(src_v, uv_width, 1, fout) == 1);
|
|
src_v += yuv->v_stride;
|
|
}
|
|
for (y = 0; ok && y < a_height; ++y) {
|
|
ok &= (fwrite(src_a, width, 1, fout) == 1);
|
|
src_a += yuv->a_stride;
|
|
}
|
|
return ok;
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Generic top-level call
|
|
|
|
int WebPSaveImage(const WebPDecBuffer* const buffer,
|
|
WebPOutputFileFormat format, const char* const out_file) {
|
|
FILE* fout = NULL;
|
|
int needs_open_file = 1;
|
|
const int use_stdout = (out_file != NULL) && !strcmp(out_file, "-");
|
|
int ok = 1;
|
|
|
|
if (buffer == NULL || out_file == NULL) return 0;
|
|
|
|
#ifdef HAVE_WINCODEC_H
|
|
needs_open_file = (format != PNG);
|
|
#endif
|
|
|
|
if (needs_open_file) {
|
|
fout = use_stdout ? ImgIoUtilSetBinaryMode(stdout) : fopen(out_file, "wb");
|
|
if (fout == NULL) {
|
|
fprintf(stderr, "Error opening output file %s\n", out_file);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if (format == PNG ||
|
|
format == RGBA || format == BGRA || format == ARGB ||
|
|
format == rgbA || format == bgrA || format == Argb) {
|
|
#ifdef HAVE_WINCODEC_H
|
|
ok &= WebPWritePNG(out_file, use_stdout, buffer);
|
|
#else
|
|
ok &= WebPWritePNG(fout, buffer);
|
|
#endif
|
|
} else if (format == PAM) {
|
|
ok &= WebPWritePAM(fout, buffer);
|
|
} else if (format == PPM || format == RGB || format == BGR) {
|
|
ok &= WebPWritePPM(fout, buffer);
|
|
} else if (format == RGBA_4444 || format == RGB_565 || format == rgbA_4444) {
|
|
ok &= WebPWrite16bAsPGM(fout, buffer);
|
|
} else if (format == BMP) {
|
|
ok &= WebPWriteBMP(fout, buffer);
|
|
} else if (format == TIFF) {
|
|
ok &= WebPWriteTIFF(fout, buffer);
|
|
} else if (format == RAW_YUV) {
|
|
ok &= WebPWriteYUV(fout, buffer);
|
|
} else if (format == PGM || format == YUV || format == YUVA) {
|
|
ok &= WebPWritePGM(fout, buffer);
|
|
} else if (format == ALPHA_PLANE_ONLY) {
|
|
ok &= WebPWriteAlphaPlane(fout, buffer);
|
|
}
|
|
if (fout != NULL && fout != stdout) {
|
|
fclose(fout);
|
|
}
|
|
return ok;
|
|
}
|