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author | Yotam Barnoy | 2010-10-10 08:30:18 +0000 |
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committer | Yotam Barnoy | 2010-10-10 08:30:18 +0000 |
commit | 178c46c0388c76bd46515aa4d37f681105dafa1e (patch) | |
tree | af30efd713056883472682d4e77ad69e3fda018d /backends/platform/psp/pspkeyboard.cpp | |
parent | 25dac76b3500c23bf13cce359a59ea184f9cbeeb (diff) | |
download | scummvm-rg350-178c46c0388c76bd46515aa4d37f681105dafa1e.tar.gz scummvm-rg350-178c46c0388c76bd46515aa4d37f681105dafa1e.tar.bz2 scummvm-rg350-178c46c0388c76bd46515aa4d37f681105dafa1e.zip |
PSP: factored PngLoader out of virtual keyboard for further use
svn-id: r53108
Diffstat (limited to 'backends/platform/psp/pspkeyboard.cpp')
-rw-r--r-- | backends/platform/psp/pspkeyboard.cpp | 183 |
1 files changed, 11 insertions, 172 deletions
diff --git a/backends/platform/psp/pspkeyboard.cpp b/backends/platform/psp/pspkeyboard.cpp index b83b1c873a..be084d4d38 100644 --- a/backends/platform/psp/pspkeyboard.cpp +++ b/backends/platform/psp/pspkeyboard.cpp @@ -32,10 +32,10 @@ #include <malloc.h> #include <pspkernel.h> -#include <png.h> #include "backends/platform/psp/psppixelformat.h" #include "backends/platform/psp/pspkeyboard.h" +#include "backends/platform/psp/png_loader.h" #include "backends/platform/psp/input.h" #include "common/keyboard.h" #include "common/fs.h" @@ -92,16 +92,6 @@ short PSPKeyboard::_modeChar[MODE_COUNT][5][6] = { } }; -// Read function for png library to be able to read from our SeekableReadStream -// -void pngReadStreamRead(png_structp png_ptr, png_bytep data, png_size_t length) { - Common::SeekableReadStream *file; - - file = (Common::SeekableReadStream *)png_ptr->io_ptr; - - file->read(data, length); -} - // Array with file names const char *PSPKeyboard::_guiStrings[] = { "keys4.png", "keys_s4.png", @@ -282,8 +272,6 @@ bool PSPKeyboard::load() { // Loop through all png images for (i = 0; i < guiStringsSize; i++) { - uint32 height = 0, width = 0, paletteSize = 0; - PSP_DEBUG_PRINT("Opening %s.\n", _guiStrings[i]); // Look for the file in the kbd directory @@ -310,49 +298,18 @@ bool PSPKeyboard::load() { goto ERROR; } - if (getPngImageSize(file, &width, &height, &paletteSize) == 0) { // Check image size and palette size - // Allocate memory for image - PSP_DEBUG_PRINT("width[%d], height[%d], paletteSize[%d]\n", width, height, paletteSize); - _buffers[i].setSize(width, height, Buffer::kSizeByTextureSize); - - if (paletteSize) { // 8 or 4-bit image - if (paletteSize <= 16) { // 4 bit - _buffers[i].setPixelFormat(PSPPixelFormat::Type_Palette_4bit); - _palettes[i].setPixelFormats(PSPPixelFormat::Type_4444, PSPPixelFormat::Type_Palette_4bit); - paletteSize = 16; - } else if (paletteSize <= 256) { // 8-bit image - paletteSize = 256; - _buffers[i].setPixelFormat(PSPPixelFormat::Type_Palette_8bit); - _palettes[i].setPixelFormats(PSPPixelFormat::Type_4444, PSPPixelFormat::Type_Palette_8bit); - } else { - PSP_ERROR("palette of %d too big!\n", paletteSize); - goto ERROR; - } - - } else { // 32-bit image - _buffers[i].setPixelFormat(PSPPixelFormat::Type_8888); - } - - _buffers[i].allocate(); - _palettes[i].allocate(); - - // Try to load the image - file->seek(0); // Go back to start - - if (loadPngImage(file, _buffers[i], _palettes[i]) != 0) - goto ERROR; - else { // Success - PSP_DEBUG_PRINT("Managed to load the image\n"); - - if (paletteSize == 16) // 4-bit - _buffers[i].flipNibbles(); - - delete file; - } - } else { - PSP_ERROR("couldn't obtain PNG image size\n"); + PngLoader image(file, _buffers[i], _palettes[i]); + + if (image.allocate() != PngLoader::OK) { + PSP_ERROR("Failed to allocate memory for keyboard image %s\n", _guiStrings[i]); + goto ERROR; + } + if (!image.load()) { + PSP_ERROR("Failed to load image from file %s\n", _guiStrings[i]); goto ERROR; } + + delete file; } /* for loop */ _init = true; @@ -377,124 +334,6 @@ ERROR: return false; } -static void user_warning_fn(png_structp png_ptr, png_const_charp warning_msg) { - // ignore PNG warnings -} - -/* Get the width and height of a png image */ -int PSPKeyboard::getPngImageSize(Common::SeekableReadStream *file, uint32 *png_width, uint32 *png_height, u32 *paletteSize) { - DEBUG_ENTER_FUNC(); - - png_structp png_ptr; - png_infop info_ptr; - unsigned int sig_read = 0; - png_uint_32 width, height; - int bit_depth, color_type, interlace_type; - - png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - if (png_ptr == NULL) { - return -1; - } - png_set_error_fn(png_ptr, (png_voidp) NULL, (png_error_ptr) NULL, user_warning_fn); - info_ptr = png_create_info_struct(png_ptr); - if (info_ptr == NULL) { - png_destroy_read_struct(&png_ptr, png_infopp_NULL, png_infopp_NULL); - return -1; - } - // Set the png lib to use our read function - png_set_read_fn(png_ptr, (void *)file, pngReadStreamRead); - - png_set_sig_bytes(png_ptr, sig_read); - png_read_info(png_ptr, info_ptr); - png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, &interlace_type, int_p_NULL, int_p_NULL); - if (color_type & PNG_COLOR_MASK_PALETTE) - *paletteSize = info_ptr->num_palette; - else - *paletteSize = 0; - - png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL); - - *png_width = width; - *png_height = height; - - return 0; -} - -// Load a texture from a png image -// -int PSPKeyboard::loadPngImage(Common::SeekableReadStream *file, Buffer &buffer, Palette &palette) { - DEBUG_ENTER_FUNC(); - - png_structp png_ptr; - png_infop info_ptr; - unsigned int sig_read = 0; - png_uint_32 width, height; - int bit_depth, color_type, interlace_type; - size_t y; - - png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); - if (png_ptr == NULL) { - PSP_ERROR("Couldn't create read struct to load keyboard\n"); - return -1; - } - // Use dummy error function - png_set_error_fn(png_ptr, (png_voidp) NULL, (png_error_ptr) NULL, user_warning_fn); - - info_ptr = png_create_info_struct(png_ptr); - if (info_ptr == NULL) { - PSP_ERROR("Couldn't create info struct to load keyboard\n"); - png_destroy_read_struct(&png_ptr, png_infopp_NULL, png_infopp_NULL); - return -1; - } - - // Set the png lib to use our customized read function - png_set_read_fn(png_ptr, (void *)file, pngReadStreamRead); - - png_set_sig_bytes(png_ptr, sig_read); - png_read_info(png_ptr, info_ptr); - png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, &interlace_type, int_p_NULL, int_p_NULL); - - // Strip off 16 bit channels. Not really needed but whatever - png_set_strip_16(png_ptr); - - if (color_type == PNG_COLOR_TYPE_PALETTE) { - // Copy the palette - png_colorp srcPal = info_ptr->palette; - for (int i = 0; i < info_ptr->num_palette; i++) { - unsigned char alphaVal = (i < info_ptr->num_trans) ? info_ptr->trans[i] : 0xFF; // Load alpha if it's there - palette.setSingleColorRGBA(i, srcPal->red, srcPal->green, srcPal->blue, alphaVal); - srcPal++; - } - } else { // Not a palettized image - // Round up grayscale images - if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8) png_set_gray_1_2_4_to_8(png_ptr); - // Convert trans channel to alpha for 32 bits - if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) png_set_tRNS_to_alpha(png_ptr); - // Filler for alpha? - png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER); - } - - unsigned char *line = (unsigned char*) malloc(info_ptr->rowbytes); - if (!line) { - png_destroy_read_struct(&png_ptr, png_infopp_NULL, png_infopp_NULL); - PSP_ERROR("Couldn't allocate line\n"); - return -1; - } - - for (y = 0; y < height; y++) { - png_read_row(png_ptr, line, png_bytep_NULL); - buffer.copyFromRect(line, info_ptr->rowbytes, 0, y, width, 1); // Copy into buffer - //memcpy(buffer.getPixels()[y * buffer.getWidthInBytes()], line, info_ptr->rowbytes); - } - - free(line); - - png_read_end(png_ptr, info_ptr); - png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL); - - return 0; -} - // Defines for working with PSP buttons #define CHANGED(x) (_buttonsChanged & (x)) #define PRESSED(x) ((_buttonsChanged & (x)) && (pad.Buttons & (x))) |