Make image output lossy (use stb image writer), also significantly improves performance for jpeg

1 files changed, 31 insertions, 0 deletions

diff --git a/include/image_writer.h b/include/image_writer.h
new file mode 100644
index 0000000..79f549e
--- /dev/null
+++ b/include/image_writer.h
@@ -0,0 +1,31 @@
+#ifndef GSR_IMAGE_WRITER_H
+#define GSR_IMAGE_WRITER_H
+
+#include <stdbool.h>
+
+typedef struct gsr_egl gsr_egl;
+
+typedef enum {
+    GSR_IMAGE_FORMAT_JPEG,
+    GSR_IMAGE_FORMAT_PNG
+} gsr_image_format;
+
+typedef enum {
+    GSR_IMAGE_WRITER_SOURCE_OPENGL
+} gsr_image_writer_source;
+
+typedef struct {
+    gsr_image_writer_source source;
+    gsr_egl *egl;
+    int width;
+    int height;
+    unsigned int texture;
+} gsr_image_writer;
+
+bool gsr_image_writer_init(gsr_image_writer *self, gsr_image_writer_source source, gsr_egl *egl, int width, int height);
+void gsr_image_writer_deinit(gsr_image_writer *self);
+
+/* Quality is between 1 and 100 where 100 is the max quality. Quality doesn't apply to lossless formats */
+bool gsr_image_writer_write_to_file(gsr_image_writer *self, const char *filepath, gsr_image_format image_format, int quality);
+
+#endif /* GSR_IMAGE_WRITER_H */