Alex Vakulenko | 4f079d0 | 2017-01-27 14:41:25 -0800 | [diff] [blame^] | 1 | // screencap is a tool for taking screenshots using the screenshot service. |
| 2 | |
| 3 | #include <fstream> |
| 4 | #include <iostream> |
| 5 | #include <string> |
| 6 | #include <vector> |
| 7 | |
| 8 | #include <private/dvr/image_io.h> |
| 9 | #include <private/dvr/screenshot_client.h> |
| 10 | |
| 11 | namespace { |
| 12 | |
| 13 | // Attempt to take a screenshot and save it to |filename|. |
| 14 | // Returns zero on success, or a non-zero exit code otherwise. |
| 15 | int TakeScreenshot(const std::string& app_name, const std::string& filename, |
| 16 | int index) { |
| 17 | auto error_out = [app_name]() -> std::ostream& { |
| 18 | return std::cerr << app_name << ": "; |
| 19 | }; |
| 20 | |
| 21 | auto info_out = [app_name]() -> std::ostream& { |
| 22 | return std::cout << app_name << ": "; |
| 23 | }; |
| 24 | |
| 25 | auto client = android::dvr::ScreenshotClient::Create(); |
| 26 | |
| 27 | if (client->format() != HAL_PIXEL_FORMAT_RGB_888) { |
| 28 | error_out() << "The screenshot format for this device is not supported." |
| 29 | << std::endl; |
| 30 | return 1; |
| 31 | } |
| 32 | |
| 33 | std::vector<uint8_t> image; |
| 34 | int width = 0; |
| 35 | int height = 0; |
| 36 | if (client->Take(&image, index, &width, &height) != 0) { |
| 37 | error_out() << "Failed to take screenshot." << std::endl; |
| 38 | return 1; |
| 39 | } |
| 40 | |
| 41 | info_out() << "Got " << width << "x" << height << " screenshot." << std::endl; |
| 42 | |
| 43 | if (!image_io_write_rgb888(filename.c_str(), width, height, image.data())) { |
| 44 | error_out() << "Failed to write image to output file " << filename |
| 45 | << std::endl; |
| 46 | return 1; |
| 47 | } |
| 48 | |
| 49 | return 0; |
| 50 | } |
| 51 | |
| 52 | } // namespace |
| 53 | |
| 54 | int main(int argc, char** argv) { |
| 55 | // Parse arguments |
| 56 | if (argc != 2 && argc != 3) { |
| 57 | std::cerr |
| 58 | << "Usage: " << argv[0] |
| 59 | << " filename.[" DVR_IMAGE_IO_SUPPORTED_WRITE |
| 60 | "] [INDEX]\n" |
| 61 | "INDEX: specify 1..n to grab hw_composer layers by index.\n" |
| 62 | " specify -n to grab pre-warp layers (-1 is base layer).\n" |
| 63 | " the default is 1 (the base hw_composer layer).\n" |
| 64 | " an invalid index will result in an error.\n"; |
| 65 | return 1; |
| 66 | } |
| 67 | const std::string filename(argv[1]); |
| 68 | int index = 1; |
| 69 | if (argc > 2) |
| 70 | index = atoi(argv[2]); |
| 71 | |
| 72 | // Perform the actual screenshot. |
| 73 | return TakeScreenshot(argv[0], filename, index); |
| 74 | } |