123 lines
3.2 KiB
C++
123 lines
3.2 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <errno.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <binder/IMemory.h>
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#include <surfaceflinger/SurfaceComposerClient.h>
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#include <SkImageEncoder.h>
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#include <SkBitmap.h>
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#include <SkStream.h>
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using namespace android;
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static void usage()
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{
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fprintf(stderr,
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"usage: screenshot [-hp] [FILENAME]\n"
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" -h: this message\n"
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" -p: save the file as a png.\n"
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"If FILENAME ends with .png it will be saved as a png.\n"
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"If FILENAME is not given, the results will be printed to stdout.\n"
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);
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}
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static SkBitmap::Config flinger2skia(PixelFormat f)
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{
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switch (f) {
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case PIXEL_FORMAT_A_8:
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case PIXEL_FORMAT_L_8:
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return SkBitmap::kA8_Config;
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case PIXEL_FORMAT_RGB_565:
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return SkBitmap::kRGB_565_Config;
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case PIXEL_FORMAT_RGBA_4444:
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return SkBitmap::kARGB_4444_Config;
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default:
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return SkBitmap::kARGB_8888_Config;
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}
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}
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int main(int argc, char** argv)
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{
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bool png = false;
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int c;
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while ((c = getopt(argc, argv, "ph")) != -1) {
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switch (c) {
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case 'p':
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png = true;
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break;
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case '?':
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case 'h':
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usage();
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return 1;
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}
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}
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argc -= optind;
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argv += optind;
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int fd = -1;
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if (argc == 0) {
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fd = dup(STDOUT_FILENO);
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} else if (argc == 1) {
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const char* fn = argv[0];
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fd = open(fn, O_WRONLY | O_CREAT | O_TRUNC, 0664);
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if (fd == -1) {
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fprintf(stderr, "Error opening file: (%d) %s\n", errno, strerror(errno));
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return 1;
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}
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const int len = strlen(fn);
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if (len >= 4 && 0 == strcmp(fn+len-4, ".png")) {
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png = true;
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}
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}
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if (fd == -1) {
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usage();
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return 1;
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}
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ScreenshotClient screenshot;
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if (screenshot.update() != NO_ERROR) {
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return 0;
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}
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void const* base = screenshot.getPixels();
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uint32_t w = screenshot.getWidth();
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uint32_t h = screenshot.getHeight();
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uint32_t f = screenshot.getFormat();
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if (png) {
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SkBitmap b;
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b.setConfig(flinger2skia(f), w, h);
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b.setPixels((void*)base);
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SkDynamicMemoryWStream stream;
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SkImageEncoder::EncodeStream(&stream, b,
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SkImageEncoder::kPNG_Type, SkImageEncoder::kDefaultQuality);
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write(fd, stream.getStream(), stream.getOffset());
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} else {
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write(fd, &w, 4);
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write(fd, &h, 4);
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write(fd, &f, 4);
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write(fd, base, w*h*4);
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}
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close(fd);
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return 0;
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}
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