make screencap able to save pngs. (5cff0630) · Commits · e / os / android_frameworks_base

cmds/screencap/Android.mk

+8 −0

Original line number	Diff line number	Diff line
		@@ -8,6 +8,7 @@ LOCAL_SHARED_LIBRARIES := \
		libcutils \
		libutils \
		libbinder \
		libskia \
		libui \
		libsurfaceflinger_client

		@@ -15,4 +16,11 @@ LOCAL_MODULE:= screencap

		LOCAL_MODULE_TAGS := optional

		LOCAL_C_INCLUDES += \
		external/skia/include/core \
		external/skia/include/effects \
		external/skia/include/images \
		external/skia/src/ports \
		external/skia/include/utils

		include $(BUILD_EXECUTABLE)

cmds/screencap/screencap.cpp

+86 −6

Original line number	Diff line number	Diff line
		@@ -14,29 +14,109 @@
		* limitations under the License.
		*/

		#include <errno.h>
		#include <unistd.h>
		#include <stdio.h>
		#include <fcntl.h>

		#include <binder/IMemory.h>
		#include <surfaceflinger/SurfaceComposerClient.h>

		#include <SkImageEncoder.h>
		#include <SkBitmap.h>
		#include <SkStream.h>

		using namespace android;

		static void usage()
		{
		fprintf(stderr,
		"usage: screenshot [-hp] [FILENAME]\n"
		" -h: this message\n"
		" -p: save the file as a png.\n"
		"If FILENAME ends with .png it will be saved as a png.\n"
		"If FILENAME is not given, the results will be printed to stdout.\n"
		);
		}

		static SkBitmap::Config flinger2skia(PixelFormat f)
		{
		switch (f) {
		case PIXEL_FORMAT_A_8:
		case PIXEL_FORMAT_L_8:
		return SkBitmap::kA8_Config;
		case PIXEL_FORMAT_RGB_565:
		return SkBitmap::kRGB_565_Config;
		case PIXEL_FORMAT_RGBA_4444:
		return SkBitmap::kARGB_4444_Config;
		default:
		return SkBitmap::kARGB_8888_Config;
		}
		}

		int main(int argc, char** argv)
		{
		bool png = false;
		int c;
		while ((c = getopt(argc, argv, "ph")) != -1) {
		switch (c) {
		case 'p':
		png = true;
		break;
		case '?':
		case 'h':
		usage();
		return 1;
		}
		}
		argc -= optind;
		argv += optind;

		int fd = -1;
		if (argc == 0) {
		fd = dup(STDOUT_FILENO);
		} else if (argc == 1) {
		const char* fn = argv[0];
		fd = open(fn, O_WRONLY \| O_CREAT \| O_TRUNC, 0664);
		if (fd == -1) {
		fprintf(stderr, "Error opening file: (%d) %s\n", errno, strerror(errno));
		return 1;
		}
		const int len = strlen(fn);
		if (len >= 4 && 0 == strcmp(fn+len-4, ".png")) {
		png = true;
		}
		}

		if (fd == -1) {
		usage();
		return 1;
		}

		ScreenshotClient screenshot;
		if (screenshot.update() != NO_ERROR)
		if (screenshot.update() != NO_ERROR) {
		return 0;
		}

		void const* base = screenshot.getPixels();
		uint32_t w = screenshot.getWidth();
		uint32_t h = screenshot.getHeight();
		uint32_t f = screenshot.getFormat();
		int fd = dup(STDOUT_FILENO);

		if (png) {
		SkBitmap b;
		b.setConfig(flinger2skia(f), w, h);
		b.setPixels((void*)base);
		SkDynamicMemoryWStream stream;
		SkImageEncoder::EncodeStream(&stream, b,
		SkImageEncoder::kPNG_Type, SkImageEncoder::kDefaultQuality);
		write(fd, stream.getStream(), stream.getOffset());
		} else {
		write(fd, &w, 4);
		write(fd, &h, 4);
		write(fd, &f, 4);
		write(fd, base, wh4);
		}
		close(fd);
		return 0;
		}