syntax = "proto3";

// Used as header before each frame in a .frames file:
//
//  1. "Ftbifrm0" (8 bytes, ASCII -- note that no byte repeats)
//  2. Length of upcoming FrameHeaderProto (uint32, binary, big endian)
//  3. The FrameHeaderProto itself
//  4. The actual frame

message FrameHeaderProto {
	int32 stream_idx = 1;
	int64 pts = 2;
	int64 file_size = 3;  // In bytes of compressed frame. TODO: rename to size.
	int32 audio_size = 4;  // In bytes of uncompressed 32-bit 48kHz stereo PCM. Can be zero.
}

message StreamContentsProto {
	int32 stream_idx = 1;
	repeated int64 pts = 2 [packed=true];
	repeated int64 file_size = 3 [packed=true];
	repeated int64 offset = 4 [packed=true];
	repeated int32 audio_size = 5 [packed=true];
}

message FileContentsProto {
	repeated StreamContentsProto stream = 1;  // Typically only one.
}