feat: add framebuffer_bytes method (#61)

* feat: add `framebuffer_bytes` method

Cargo.toml

@@ -9,7 +9,7 @@ homepage = "https://github.com/cocool97/adb_client"
 keywords = ["adb", "android", "tcp", "usb"]
 license = "MIT"
 repository = "https://github.com/cocool97/adb_client"
-version = "2.0.4"
+version = "2.0.5"
 
 # To build locally when working on a new release
 [patch.crates-io]

adb_cli/Cargo.toml

@@ -10,7 +10,7 @@ repository.workspace = true
 version.workspace = true
 
 [dependencies]
-adb_client = { version = "2.0.1" }
+adb_client = { version = "2.0.5" }
 anyhow = { version = "1.0.89" }
 clap = { version = "4.5.18", features = ["derive"] }
 env_logger = { version = "0.11.5" }

adb_client/src/server/device_commands/framebuffer.rs

@@ -1,7 +1,12 @@
-use std::{io::Read, iter::Map, path::Path, slice::ChunksExact};
+use std::{
+    io::{Read, Seek, Write},
+    iter::Map,
+    path::Path,
+    slice::ChunksExact,
+};
 
 use byteorder::{LittleEndian, ReadBytesExt};
-use image::{ImageBuffer, Rgba};
+use image::{ImageBuffer, ImageFormat, Rgba};
 
 use crate::{models::AdbServerCommand, utils, ADBServerDevice, Result, RustADBError};
 
@@ -98,13 +103,21 @@ impl TryFrom<[u8; std::mem::size_of::<Self>()]> for FrameBufferInfoV2 {
 }
 
 impl ADBServerDevice {
-    /// Dump framebuffer of this device
+    /// Dump framebuffer of this device into given ['path']
     /// Big help from source code (https://android.googlesource.com/platform/system/adb/+/refs/heads/main/framebuffer_service.cpp)
     pub fn framebuffer<P: AsRef<Path>>(&mut self, path: P) -> Result<()> {
         let img = self.framebuffer_inner()?;
         Ok(img.save(path.as_ref())?)
     }
 
+    /// Dump framebuffer of this device and return corresponding bytes.
+    ///
+    /// Output data format is currently only `PNG`.
+    pub fn framebuffer_bytes<W: Write + Seek>(&mut self, mut writer: W) -> Result<()> {
+        let img = self.framebuffer_inner()?;
+        Ok(img.write_to(&mut writer, ImageFormat::Png)?)
+    }
+
     /// Inner method requesting framebuffer from Android device
     fn framebuffer_inner(&mut self) -> Result<ImageBuffer<Rgba<u8>, Vec<u8>>> {
         let serial: String = self.identifier.clone();