audio data type

2 files changed, 52 insertions, 0 deletions

diff --git a/acf2/model/binary.lua b/acf2/model/binary.lua
new file mode 100644
index 0000000..2af10a0
--- /dev/null
+++ b/acf2/model/binary.lua
@@ -0,0 +1,50 @@
+--[[
+Copyright (c) 2012-2014 Kaarle Ritvanen
+See LICENSE file for license details
+--]]
+
+local M = {}
+
+local object = require('acf2.object')
+local class = object.class
+local super = object.super
+
+
+local b64 = require('b64')
+
+local magic = require('magic')
+magic = magic.open(magic.MIME_TYPE)
+magic:load()
+
+
+M.Data = class()
+
+function M.Data:init(path, data)
+   self.path = path
+   self.data = data
+   self.type = magic:buffer(data)
+end
+
+function M.Data:encode()
+   return 'data:'..self.type..';base64,'..b64.encode(self.data)
+end
+
+
+M.Audio = class(require('acf2.model.field').Field)
+
+function M.Audio:init(params)
+   super(self, M.Audio):init(params)
+   self.dtype = 'binary'
+   self.widget = 'audio'
+end
+
+function M.Audio:load(context)
+   local value = super(self, M.Audio):load(context)
+   return type(value) == 'string' and M.Data(context.path, value) or value
+end
+
+-- not yet implemented
+function M.Audio:save(context, value) end
+
+
+return M
diff --git a/acf2/model/init.lua b/acf2/model/init.lua
index 376ec64..6e8b7f5 100644
--- a/acf2/model/init.lua
+++ b/acf2/model/init.lua
@@ -9,6 +9,8 @@ M.error = require('acf2.error')
 local raise = M.error.raise
 local relabel = M.error.relabel
 
+M.binary = require('acf2.model.binary')
+
 local combination = require('acf2.model.combination')
 M.Union = combination.Union
 M.Range = combination.Range