新增支持enhanced-rtmp h265 推流 (#2694)

src/Rtmp/Rtmp.h

@@ -269,5 +269,72 @@ private:
 //根据音频track获取flags
 uint8_t getAudioRtmpFlags(const Track::Ptr &track);
 
+enum class RtmpFrameType : uint8_t {
+    reserved = 0,
+    key_frame = 1, // key frame (for AVC, a seekable frame)
+    inter_frame = 2, // inter frame (for AVC, a non-seekable frame)
+    disposable_inter_frame = 3, // disposable inter frame (H.263 only)
+    generated_key_frame = 4, // generated key frame (reserved for server use only)
+    video_info_frame = 5, // video info/command frame
+};
+
+enum class RtmpVideoCodec : uint8_t {
+    h263 = 2, // Sorenson H.263
+    screen_video = 3, // Screen video
+    vp6 = 4, // On2 VP6
+    vp6_alpha = 5, // On2 VP6 with alpha channel
+    screen_video2 = 6, // Screen video version 2
+    h264 = 7, // avc
+    h265 = 12, // 国内扩展
+};
+
+enum class RtmpH264PacketType : uint8_t {
+    h264_config_header = 0, // AVC sequence header(sps/pps)
+    h264_nalu = 1, // AVC NALU
+    h264_end_seq = 2, // AVC end of sequence (lower level NALU sequence ender is not REQUIRED or supported)
+};
+
+enum class RtmpPacketType : uint8_t {
+    PacketTypeSequenceStart = 0,
+    PacketTypeCodedFrames = 1,
+    PacketTypeSequenceEnd = 2,
+
+    // CompositionTime Offset is implied to equal zero. This is
+    // an optimization to save putting SI24 composition time value of zero on
+    // the wire. See pseudo code below in the VideoTagBody section
+    PacketTypeCodedFramesX = 3,
+
+    // VideoTagBody does not contain video data. VideoTagBody
+    // instead contains an AMF encoded metadata. See Metadata Frame
+    // section for an illustration of its usage. As an example, the metadata
+    // can be HDR information. This is a good way to signal HDR
+    // information. This also opens up future ways to express additional
+    // metadata that is meant for the next video sequence.
+    //
+    // note: presence of PacketTypeMetadata means that FrameType
+    // flags at the top of this table should be ignored
+    PacketTypeMetadata = 4,
+
+    // Carriage of bitstream in MPEG-2 TS format
+    // note: PacketTypeSequenceStart and PacketTypeMPEG2TSSequenceStart
+    // are mutually exclusive
+    PacketTypeMPEG2TSSequenceStart = 5,
+};
+
+struct RtmpPacketInfo {
+    CodecId codec = CodecInvalid;
+    bool is_enhanced;
+    union {
+        struct {
+            RtmpFrameType frame_type;
+            RtmpVideoCodec rtmp_codec;
+            RtmpPacketType pkt_type;
+            RtmpH264PacketType h264_pkt_type;
+        } video;
+    };
+};
+// https://github.com/veovera/enhanced-rtmp/blob/main/enhanced-rtmp-v1.pdf
+CodecId parseVideoRtmpPacket(const uint8_t *data, size_t size, RtmpPacketInfo *info = nullptr);
+
 }//namespace mediakit
 #endif//__rtmp_h