diff options
Diffstat (limited to 'ui')
| -rw-r--r-- | ui/console.c | 101 |
1 files changed, 98 insertions, 3 deletions
diff --git a/ui/console.c b/ui/console.c index 1752f2ec88..15d0f6affd 100644 --- a/ui/console.c +++ b/ui/console.c @@ -37,6 +37,9 @@ #include "exec/memory.h" #include "io/channel-file.h" #include "qom/object.h" +#ifdef CONFIG_PNG +#include <png.h> +#endif #define DEFAULT_BACKSCROLL 512 #define CONSOLE_CURSOR_PERIOD 500 @@ -291,6 +294,89 @@ void graphic_hw_invalidate(QemuConsole *con) } } +#ifdef CONFIG_PNG +/** + * png_save: Take a screenshot as PNG + * + * Saves screendump as a PNG file + * + * Returns true for success or false for error. + * + * @fd: File descriptor for PNG file. + * @image: Image data in pixman format. + * @errp: Pointer to an error. + */ +static bool png_save(int fd, pixman_image_t *image, Error **errp) +{ + int width = pixman_image_get_width(image); + int height = pixman_image_get_height(image); + g_autofree png_struct *png_ptr = NULL; + g_autofree png_info *info_ptr = NULL; + g_autoptr(pixman_image_t) linebuf = + qemu_pixman_linebuf_create(PIXMAN_a8r8g8b8, width); + uint8_t *buf = (uint8_t *)pixman_image_get_data(linebuf); + FILE *f = fdopen(fd, "wb"); + int y; + if (!f) { + error_setg_errno(errp, errno, + "Failed to create file from file descriptor"); + return false; + } + + png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, + NULL, NULL); + if (!png_ptr) { + error_setg(errp, "PNG creation failed. Unable to write struct"); + fclose(f); + return false; + } + + info_ptr = png_create_info_struct(png_ptr); + + if (!info_ptr) { + error_setg(errp, "PNG creation failed. Unable to write info"); + fclose(f); + png_destroy_write_struct(&png_ptr, &info_ptr); + return false; + } + + png_init_io(png_ptr, f); + + png_set_IHDR(png_ptr, info_ptr, width, height, 8, + PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, + PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); + + png_write_info(png_ptr, info_ptr); + + for (y = 0; y < height; ++y) { + qemu_pixman_linebuf_fill(linebuf, image, width, 0, y); + png_write_row(png_ptr, buf); + } + qemu_pixman_image_unref(linebuf); + + png_write_end(png_ptr, NULL); + + png_destroy_write_struct(&png_ptr, &info_ptr); + + if (fclose(f) != 0) { + error_setg_errno(errp, errno, + "PNG creation failed. Unable to close file"); + return false; + } + + return true; +} + +#else /* no png support */ + +static bool png_save(int fd, pixman_image_t *image, Error **errp) +{ + error_setg(errp, "Enable PNG support with libpng for screendump"); + return false; +} + +#endif /* CONFIG_PNG */ + static bool ppm_save(int fd, pixman_image_t *image, Error **errp) { int width = pixman_image_get_width(image); @@ -329,7 +415,8 @@ static void graphic_hw_update_bh(void *con) /* Safety: coroutine-only, concurrent-coroutine safe, main thread only */ void coroutine_fn qmp_screendump(const char *filename, bool has_device, const char *device, - bool has_head, int64_t head, Error **errp) + bool has_head, int64_t head, + bool has_format, ImageFormat format, Error **errp) { g_autoptr(pixman_image_t) image = NULL; QemuConsole *con; @@ -385,8 +472,16 @@ qmp_screendump(const char *filename, bool has_device, const char *device, * yields and releases the BQL. It could produce corrupted dump, but * it should be otherwise safe. */ - if (!ppm_save(fd, image, errp)) { - qemu_unlink(filename); + if (has_format && format == IMAGE_FORMAT_PNG) { + /* PNG format specified for screendump */ + if (!png_save(fd, image, errp)) { + qemu_unlink(filename); + } + } else { + /* PPM format specified/default for screendump */ + if (!ppm_save(fd, image, errp)) { + qemu_unlink(filename); + } } } |