minuitwrp/resources.c - android_bootable_recovery - Gitiles

 /*
  * 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 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) {
     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);
     }

     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;

     *pSurface = NULL;

     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 * 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:
     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);
     }
 }
	/*
	* 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 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) {
	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);
	}

	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;

	*pSurface = NULL;

	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 * 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:
	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);
	}
	}