flv: Add new crate for FLV (de)muxing

Cargo.lock

@@ -1645,6 +1645,13 @@ dependencies = [
  "spin",
 ]
 
+[[package]]
+name = "flv-rs"
+version = "0.1.0"
+dependencies = [
+ "bitflags 2.3.2",
+]
+
 [[package]]
 name = "fnv"
 version = "1.0.7"

Cargo.toml

@@ -5,6 +5,7 @@ members = [
     "core/build_playerglobal",
     "desktop",
     "swf",
+    "flv",
     "web",
     "web/packages/extension/safari",
     "wstr",

flv/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "flv-rs"
+version = "0.1.0"
+authors = ["David Wendt <dcrkid@gmail.com>"]
+edition = "2021"
+license = "MIT OR Apache-2.0"
+
+[dependencies]
+bitflags = "2.0.0"

flv/src/header.rs

@@ -0,0 +1,14 @@
+use bitflags::bitflags;
+
+bitflags! {
+    pub struct TypeFlags: u8 {
+        const HAS_AUDIO = 0b1000_0000;
+        const HAS_VIDEO = 0b0010_0000;
+    }
+}
+
+pub struct Header {
+    version: u8,
+    type_flags: TypeFlags,
+    data_offset: u32,
+}

flv/src/lib.rs

@@ -0,0 +1,3 @@
+mod header;
+mod sound;
+mod tag;

flv/src/sound.rs

@@ -0,0 +1,36 @@
+#[repr(u8)]
+pub enum SoundFormat {
+    LinearPCMPlatformEndian = 0,
+    Adpcm = 1,
+    MP3 = 2,
+    LinearPCMLittleEndian = 3,
+    Nellymoser16kHz = 4,
+    Nellymoser8kHz = 5,
+    Nellymoser = 6,
+    G711ALawPCM = 7,
+    G711MuLawPCM = 8,
+    Aac = 10,
+    Speex = 11,
+    MP38kHz = 14,
+    DeviceSpecific = 15,
+}
+
+#[repr(u8)]
+pub enum SoundRate {
+    R5_500 = 0,
+    R11_000 = 1,
+    R22_000 = 2,
+    R44_000 = 3,
+}
+
+#[repr(u8)]
+pub enum SoundSize {
+    Bits8 = 0,
+    Bits16 = 1,
+}
+
+#[repr(u8)]
+pub enum SoundType {
+    Mono = 0,
+    Stereo = 1,
+}

flv/src/tag.rs

@@ -0,0 +1,20 @@
+use crate::sound::{SoundFormat, SoundRate, SoundSize, SoundType};
+
+#[repr(u8)]
+pub enum TagData<'a> {
+    Audio {
+        format: SoundFormat,
+        rate: SoundRate,
+        size: SoundSize,
+        sound_type: SoundType,
+        data: &'a [u8],
+    } = 8,
+    Video = 9,
+    Script = 18,
+}
+
+pub struct Tag<'a> {
+    timestamp: i32,
+    stream_id: u32, //24 bits max
+    data: TagData<'a>,
+}