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-rw-r--r--minuitwrp/resources.c443
1 files changed, 443 insertions, 0 deletions
diff --git a/minuitwrp/resources.c b/minuitwrp/resources.c
new file mode 100644
index 000000000..0e124608e
--- /dev/null
+++ b/minuitwrp/resources.c
@@ -0,0 +1,443 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <fcntl.h>
+#include <stdio.h>
+
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <string.h>
+
+#include <linux/fb.h>
+#include <linux/kd.h>
+
+#include <pixelflinger/pixelflinger.h>
+
+#include <png.h>
+#include "jpeglib.h"
+
+#include "minui.h"
+
+// libpng gives "undefined reference to 'pow'" errors, and I have no
+// idea how to convince the build system to link with -lm. We don't
+// need this functionality (it's used for gamma adjustment) so provide
+// a dummy implementation to satisfy the linker.
+double pow(double x, double y) {
+ return x;
+}
+
+#define SURFACE_DATA_ALIGNMENT 8
+
+static GGLSurface* malloc_surface(size_t data_size) {
+ unsigned char* temp = malloc(sizeof(GGLSurface) + data_size + SURFACE_DATA_ALIGNMENT);
+ if (temp == NULL) return NULL;
+ GGLSurface* surface = (GGLSurface*) temp;
+ surface->data = temp + sizeof(GGLSurface) +
+ (SURFACE_DATA_ALIGNMENT - (sizeof(GGLSurface) % SURFACE_DATA_ALIGNMENT));
+ return surface;
+}
+
+static int open_png(const char* name, png_structp* png_ptr, png_infop* info_ptr,
+ png_uint_32* width, png_uint_32* height, png_byte* channels, FILE** fpp) {
+ char resPath[256];
+ unsigned char header[8];
+ int result = 0;
+
+ snprintf(resPath, sizeof(resPath)-1, TWRES "images/%s.png", name);
+ printf("open_png %s\n", resPath);
+ resPath[sizeof(resPath)-1] = '\0';
+ FILE* fp = fopen(resPath, "rb");
+ if (fp == NULL) {
+ fp = fopen(name, "rb");
+ if (fp == NULL) {
+ result = -1;
+ goto exit;
+ }
+ }
+
+ size_t bytesRead = fread(header, 1, sizeof(header), fp);
+ if (bytesRead != sizeof(header)) {
+ result = -2;
+ goto exit;
+ }
+
+ if (png_sig_cmp(header, 0, sizeof(header))) {
+ result = -3;
+ goto exit;
+ }
+
+ *png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ if (!*png_ptr) {
+ result = -4;
+ goto exit;
+ }
+
+ *info_ptr = png_create_info_struct(*png_ptr);
+ if (!*info_ptr) {
+ result = -5;
+ goto exit;
+ }
+
+ if (setjmp(png_jmpbuf(*png_ptr))) {
+ result = -6;
+ goto exit;
+ }
+
+ png_init_io(*png_ptr, fp);
+ png_set_sig_bytes(*png_ptr, sizeof(header));
+ png_read_info(*png_ptr, *info_ptr);
+
+ int color_type, bit_depth;
+ png_get_IHDR(*png_ptr, *info_ptr, width, height, &bit_depth,
+ &color_type, NULL, NULL, NULL);
+
+ *channels = png_get_channels(*png_ptr, *info_ptr);
+
+ /*if (bit_depth == 8 && *channels == 3 && color_type == PNG_COLOR_TYPE_RGB) {
+ // 8-bit RGB images: great, nothing to do.
+ } else if (bit_depth <= 8 && *channels == 1 && color_type == PNG_COLOR_TYPE_GRAY) {
+ // 1-, 2-, 4-, or 8-bit gray images: expand to 8-bit gray.
+ png_set_expand_gray_1_2_4_to_8(*png_ptr);
+ } else if (bit_depth <= 8 && *channels == 1 && color_type == PNG_COLOR_TYPE_PALETTE) {
+ // paletted images: expand to 8-bit RGB. Note that we DON'T
+ // currently expand the tRNS chunk (if any) to an alpha
+ // channel, because minui doesn't support alpha channels in
+ // general.
+ png_set_palette_to_rgb(*png_ptr);
+ *channels = 3;
+ } else {
+ fprintf(stderr, "minui doesn't support PNG depth %d channels %d color_type %d\n",
+ bit_depth, *channels, color_type);
+ result = -7;
+ goto exit;
+ }*/
+ if (color_type == PNG_COLOR_TYPE_PALETTE) {
+ png_set_palette_to_rgb(png_ptr);
+ }
+
+ *fpp = fp;
+ return result;
+
+ exit:
+ if (result < 0) {
+ png_destroy_read_struct(png_ptr, info_ptr, NULL);
+ }
+ if (fp != NULL) {
+ fclose(fp);
+ }
+
+ return result;
+}
+
+// "display" surfaces are transformed into the framebuffer's required
+// pixel format (currently only RGBX is supported) at load time, so
+// gr_blit() can be nothing more than a memcpy() for each row. The
+// next two functions are the only ones that know anything about the
+// framebuffer pixel format; they need to be modified if the
+// framebuffer format changes (but nothing else should).
+
+// Allocate and return a gr_surface sufficient for storing an image of
+// the indicated size in the framebuffer pixel format.
+static GGLSurface* init_display_surface(png_uint_32 width, png_uint_32 height) {
+ GGLSurface* surface;
+
+ surface = (GGLSurface*) malloc_surface(width * height * 4);
+ if (surface == NULL) return NULL;
+
+ surface->version = sizeof(GGLSurface);
+ surface->width = width;
+ surface->height = height;
+ surface->stride = width;
+
+ return surface;
+}
+
+// Copy 'input_row' to 'output_row', transforming it to the
+// framebuffer pixel format. The input format depends on the value of
+// 'channels':
+//
+// 1 - input is 8-bit grayscale
+// 3 - input is 24-bit RGB
+// 4 - input is 32-bit RGBA/RGBX
+//
+// 'width' is the number of pixels in the row.
+static void transform_rgb_to_draw(unsigned char* input_row,
+ unsigned char* output_row,
+ int channels, int width) {
+ int x;
+ unsigned char* ip = input_row;
+ unsigned char* op = output_row;
+
+ switch (channels) {
+ case 1:
+ // expand gray level to RGBX
+ for (x = 0; x < width; ++x) {
+ *op++ = *ip;
+ *op++ = *ip;
+ *op++ = *ip;
+ *op++ = 0xff;
+ ip++;
+ }
+ break;
+
+ case 3:
+ // expand RGBA to RGBX
+ for (x = 0; x < width; ++x) {
+ *op++ = *ip++;
+ *op++ = *ip++;
+ *op++ = *ip++;
+ *op++ = 0xff;
+ }
+ break;
+
+ case 4:
+ // copy RGBA to RGBX
+ memcpy(output_row, input_row, width*4);
+ break;
+ }
+}
+
+int res_create_surface_png(const char* name, gr_surface* pSurface) {
+ GGLSurface* surface = NULL;
+ int result = 0;
+ png_structp png_ptr = NULL;
+ png_infop info_ptr = NULL;
+ png_uint_32 width, height;
+ png_byte channels;
+ FILE* fp;
+
+ *pSurface = NULL;
+
+ result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels, &fp);
+ if (result < 0) return result;
+
+ surface = init_display_surface(width, height);
+ if (surface == NULL) {
+ result = -8;
+ goto exit;
+ }
+
+ unsigned char* p_row = malloc(width * 4);
+ unsigned int y;
+ for (y = 0; y < height; ++y) {
+ png_read_row(png_ptr, p_row, NULL);
+ transform_rgb_to_draw(p_row, surface->data + y * width * 4, channels, width);
+ }
+ free(p_row);
+
+ if (channels == 3)
+ surface->format = GGL_PIXEL_FORMAT_RGBX_8888;
+ else
+ surface->format = GGL_PIXEL_FORMAT_RGBA_8888;
+
+ *pSurface = (gr_surface) surface;
+
+ exit:
+ fclose(fp);
+ png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
+ if (result < 0 && surface != NULL) free(surface);
+ return result;
+}
+
+int res_create_surface_jpg(const char* name, gr_surface* pSurface) {
+ GGLSurface* surface = NULL;
+ int result = 0;
+ struct jpeg_decompress_struct cinfo;
+ struct jpeg_error_mgr jerr;
+
+ FILE* fp = fopen(name, "rb");
+ if (fp == NULL) {
+ char resPath[256];
+
+ snprintf(resPath, sizeof(resPath)-1, TWRES "images/%s", name);
+ resPath[sizeof(resPath)-1] = '\0';
+ fp = fopen(resPath, "rb");
+ if (fp == NULL) {
+ result = -1;
+ goto exit;
+ }
+ }
+
+ cinfo.err = jpeg_std_error(&jerr);
+ jpeg_create_decompress(&cinfo);
+
+ /* Specify data source for decompression */
+ jpeg_stdio_src(&cinfo, fp);
+
+ /* Read file header, set default decompression parameters */
+ if (jpeg_read_header(&cinfo, TRUE) != JPEG_HEADER_OK)
+ goto exit;
+
+ /* Start decompressor */
+ (void) jpeg_start_decompress(&cinfo);
+
+ size_t width = cinfo.image_width;
+ size_t height = cinfo.image_height;
+ size_t stride = 4 * width;
+ size_t pixelSize = stride * height;
+
+ surface = malloc(sizeof(GGLSurface) + pixelSize);
+ if (surface == NULL) {
+ result = -8;
+ goto exit;
+ }
+
+ unsigned char* pData = (unsigned char*) (surface + 1);
+ surface->version = sizeof(GGLSurface);
+ surface->width = width;
+ surface->height = height;
+ surface->stride = width; /* Yes, pixels, not bytes */
+ surface->data = pData;
+ surface->format = GGL_PIXEL_FORMAT_RGBX_8888;
+
+ int y;
+ for (y = 0; y < (int) height; ++y) {
+ unsigned char* pRow = pData + y * stride;
+ jpeg_read_scanlines(&cinfo, &pRow, 1);
+
+ int x;
+ for(x = width - 1; x >= 0; x--) {
+ int sx = x * 3;
+ int dx = x * 4;
+ unsigned char r = pRow[sx];
+ unsigned char g = pRow[sx + 1];
+ unsigned char b = pRow[sx + 2];
+ unsigned char a = 0xff;
+ pRow[dx ] = r; // r
+ pRow[dx + 1] = g; // g
+ pRow[dx + 2] = b; // b
+ pRow[dx + 3] = a;
+ }
+ }
+ *pSurface = (gr_surface) surface;
+
+exit:
+ if (fp != NULL)
+ {
+ if (surface)
+ {
+ (void) jpeg_finish_decompress(&cinfo);
+ if (result < 0)
+ {
+ free(surface);
+ }
+ }
+ jpeg_destroy_decompress(&cinfo);
+ fclose(fp);
+ }
+ return result;
+}
+
+int res_create_surface(const char* name, gr_surface* pSurface) {
+ int ret;
+
+ if (!name) return -1;
+
+ if (strlen(name) > 4 && strcmp(name + strlen(name) - 4, ".jpg") == 0)
+ return res_create_surface_jpg(name,pSurface);
+
+ ret = res_create_surface_png(name,pSurface);
+ if (ret < 0)
+ ret = res_create_surface_jpg(name,pSurface);
+
+ return ret;
+}
+
+void res_free_surface(gr_surface surface) {
+ GGLSurface* pSurface = (GGLSurface*) surface;
+ if (pSurface) {
+ free(pSurface);
+ }
+}
+
+// Scale image function
+int res_scale_surface(gr_surface source, gr_surface* destination, float scale_w, float scale_h) {
+ GGLContext *gl = NULL;
+ GGLSurface* sc_mem_surface = NULL;
+ *destination = NULL;
+ GGLSurface *surface = (GGLSurface*)source;
+ int w = gr_get_width(source), h = gr_get_height(source);
+ int sx = 0, sy = 0, dx = 0, dy = 0;
+ float dw = (float)w * scale_w;
+ float dh = (float)h * scale_h;
+
+ // Create a new surface that is the appropriate size
+ sc_mem_surface = init_display_surface((int)dw, (int)dh);
+ if (!sc_mem_surface) {
+ printf("gr_scale_surface failed to init_display_surface\n");
+ return -1;
+ }
+ sc_mem_surface->format = surface->format;
+
+ // Initialize the context
+ gglInit(&gl);
+ gl->colorBuffer(gl, sc_mem_surface);
+ gl->activeTexture(gl, 0);
+
+ // Enable or disable blending based on source surface format
+ if (surface->format == GGL_PIXEL_FORMAT_RGBX_8888) {
+ gl->disable(gl, GGL_BLEND);
+ } else {
+ gl->enable(gl, GGL_BLEND);
+ gl->blendFunc(gl, GGL_ONE, GGL_ZERO);
+ }
+
+ // Bind our source surface to the context
+ gl->bindTexture(gl, surface);
+
+ // Deal with the scaling
+ gl->texParameteri(gl, GGL_TEXTURE_2D, GGL_TEXTURE_MIN_FILTER, GGL_LINEAR);
+ gl->texParameteri(gl, GGL_TEXTURE_2D, GGL_TEXTURE_MAG_FILTER, GGL_LINEAR);
+ gl->texParameteri(gl, GGL_TEXTURE_2D, GGL_TEXTURE_WRAP_S, GGL_CLAMP);
+ gl->texParameteri(gl, GGL_TEXTURE_2D, GGL_TEXTURE_WRAP_T, GGL_CLAMP);
+ gl->texEnvi(gl, GGL_TEXTURE_ENV, GGL_TEXTURE_ENV_MODE, GGL_REPLACE);
+ gl->texGeni(gl, GGL_S, GGL_TEXTURE_GEN_MODE, GGL_AUTOMATIC);
+ gl->texGeni(gl, GGL_T, GGL_TEXTURE_GEN_MODE, GGL_AUTOMATIC);
+ gl->enable(gl, GGL_TEXTURE_2D);
+
+ int32_t grad[8];
+ memset(grad, 0, sizeof(grad));
+ // s, dsdx, dsdy, scale, t, dtdx, dtdy, tscale <- this is wrong!
+ // This api uses block floating-point for S and T texture coordinates.
+ // All values are given in 16.16, scaled by 'scale'. In other words,
+ // set scale to 0, for 16.16 values.
+
+ // s, dsdx, dsdy, t, dtdx, dtdy, sscale, tscale
+ float dsdx = (float)w / dw;
+ float dtdy = (float)h / dh;
+ grad[0] = ((float)sx - (dsdx * dx)) * 65536;
+ grad[1] = dsdx * 65536;
+ grad[3] = ((float)sy - (dtdy * dy)) * 65536;
+ grad[5] = dtdy * 65536;
+// printf("blit: w=%d h=%d dx=%d dy=%d dw=%f dh=%f dsdx=%f dtdy=%f s0=%x dsdx=%x t0=%x dtdy=%x\n",
+// w, h, dx, dy, dw, dh, dsdx, dtdy, grad[0], grad[1], grad[3], grad[5]);
+ gl->texCoordGradScale8xv(gl, 0 /*tmu*/, grad);
+
+ // draw / scale the source surface to our target context
+ gl->recti(gl, dx, dy, dx + dw, dy + dh);
+ gglUninit(gl);
+ gl = NULL;
+ // put the scaled surface in our destination
+ *destination = (gr_surface*) sc_mem_surface;
+ // free memory used in the source
+ res_free_surface(source);
+ source = NULL;
+ return 0;
+}
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