Make libminuitwrp compile

Odds are this is horribly broken, but we are not able to work on
it just yet.

Change-Id: I8cd12a6dba7957b1ccc1275b8d72c24797856db0

minuitwrp/Android.mk

@@ -2,7 +2,7 @@ LOCAL_PATH := $(call my-dir)
 
 include $(CLEAR_VARS)
 
-LOCAL_SRC_FILES := events.c resources.c graphics_overlay.c graphics_utils.c
+LOCAL_SRC_FILES := events.c resourcesnew.c graphics_overlay.c graphics_utils.c
 
 ifneq ($(TW_BOARD_CUSTOM_GRAPHICS),)
     LOCAL_SRC_FILES += $(TW_BOARD_CUSTOM_GRAPHICS)

minuitwrp/graphics.c

@@ -77,6 +77,13 @@ static int gr_is_curr_clr_opaque = 0;
 static int gr_fb_fd = -1;
 static int gr_vt_fd = -1;
 
+static unsigned char gr_current_r = 255;
+static unsigned char gr_current_g = 255;
+static unsigned char gr_current_b = 255;
+static unsigned char gr_current_a = 255;
+
+static GRSurface* gr_draw = NULL;
+
 struct fb_var_screeninfo vi;
 static struct fb_fix_screeninfo fi;
 
@@ -575,7 +582,8 @@ void gr_fill(int x, int y, int w, int h)
 }
 
 void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy) {
-    if (gr_context == NULL) {
+	// This is the old code, not sure if we still need it or not
+    /*if (gr_context == NULL) {
         return;
     }
 
@@ -594,7 +602,29 @@ void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy) {
     gl->recti(gl, dx, dy, dx + w, dy + h);
 
     if(surface->format == GGL_PIXEL_FORMAT_RGBX_8888)
-        gl->enable(gl, GGL_BLEND);
+        gl->enable(gl, GGL_BLEND);*/
+    if (source == NULL) return;
+
+    // This code doesn't compile yet, but may very well be needed later
+    /*if (gr_draw->pixel_bytes != source->pixel_bytes) {
+        printf("gr_blit: source has wrong format\n");
+        return;
+    }
+
+    dx += overscan_offset_x;
+    dy += overscan_offset_y;
+
+    if (outside(dx, dy) || outside(dx+w-1, dy+h-1)) return;*/
+
+    unsigned char* src_p = source->data + sy*source->row_bytes + sx*source->pixel_bytes;
+    unsigned char* dst_p = gr_draw->data + dy*gr_draw->row_bytes + dx*gr_draw->pixel_bytes;
+
+    int i;
+    for (i = 0; i < h; ++i) {
+        memcpy(dst_p, src_p, w * source->pixel_bytes);
+        src_p += source->row_bytes;
+        dst_p += gr_draw->row_bytes;
+    }
 }
 
 unsigned int gr_get_width(gr_surface surface) {

minuitwrp/minui.h

@@ -17,7 +17,16 @@
 #ifndef _MINUI_H_
 #define _MINUI_H_
 
-typedef void* gr_surface;
+typedef struct {
+    int width;
+    int height;
+    int row_bytes;
+    int pixel_bytes;
+    unsigned char* data;
+} GRSurface;
+
+typedef GRSurface* gr_surface;
+
 typedef unsigned short gr_pixel;
 
 #define FONT_TYPE_TWRP 0

minuitwrp/resourcesnew.c

@@ -0,0 +1,353 @@
+/*
+ * 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 <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 gr_surface malloc_surface(size_t data_size) {
+    unsigned char* temp = malloc(sizeof(GRSurface) + data_size + SURFACE_DATA_ALIGNMENT);
+    if (temp == NULL) return NULL;
+    gr_surface surface = (gr_surface) temp;
+    surface->data = temp + sizeof(GRSurface) +
+        (SURFACE_DATA_ALIGNMENT - (sizeof(GRSurface) % 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) {
+    char resPath[256];
+    unsigned char header[8];
+    int result = 0;
+
+    snprintf(resPath, sizeof(resPath)-1, "/res/images/%s.png", name);
+    resPath[sizeof(resPath)-1] = '\0';
+    FILE* fp = fopen(resPath, "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;
+    }
+
+    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 gr_surface init_display_surface(png_uint_32 width, png_uint_32 height) {
+    gr_surface surface;
+
+    surface = malloc_surface(width * height * 4);
+    if (surface == NULL) return NULL;
+
+    surface->width = width;
+    surface->height = height;
+    surface->row_bytes = width * 4;
+    surface->pixel_bytes = 4;
+
+    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) {
+    gr_surface surface = NULL;
+    int result = 0;
+    png_structp png_ptr = NULL;
+    png_infop info_ptr = NULL;
+    png_uint_32 width, height;
+    png_byte channels;
+
+    *pSurface = NULL;
+printf("png trying to open '%s'\n", name);
+    result = open_png(name, &png_ptr, &info_ptr, &width, &height, &channels);
+    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 * surface->row_bytes, channels, width);
+    }
+    free(p_row);
+
+    *pSurface = surface->data;
+
+  exit:
+    png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
+    if (result < 0 && surface != NULL) free(surface);
+    printf("res_create_surface_png returning: %i\n", result);
+    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, "/res/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);
+    }
+}