From 797a87ded8fc1169ddfbcdd8261cc7feefc243ff Mon Sep 17 00:00:00 2001 From: Rob Watson Date: Thu, 19 Apr 2018 10:46:09 +0200 Subject: [PATCH] Cleanup Frame.parse_sample_rate/1 --- lib/mpeg_audio_frame_parser/frame.ex | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/lib/mpeg_audio_frame_parser/frame.ex b/lib/mpeg_audio_frame_parser/frame.ex index 8b798ac..06476a2 100644 --- a/lib/mpeg_audio_frame_parser/frame.ex +++ b/lib/mpeg_audio_frame_parser/frame.ex @@ -184,16 +184,18 @@ defmodule MPEGAudioFrameParser.Frame do end defp parse_sample_rate(<<@sync_word::size(11), version_bits::size(2), _::size(7), sample_rate_bits::size(2), _::bits>>) do - case {version_bits, sample_rate_bits} do - {0b11, 0b00} -> 44100 - {0b11, 0b01} -> 48000 - {0b11, 0b10} -> 32000 - {0b10, 0b00} -> 22050 - {0b10, 0b01} -> 24000 - {0b10, 0b10} -> 16000 - {0b00, 0b00} -> 11025 - {0b00, 0b01} -> 12000 - {0b00, 0b10} -> 8000 + version_atom = version_atom(version_bits) + + case {version_atom, sample_rate_bits} do + {:version1, 0b00} -> 44100 + {:version1, 0b01} -> 48000 + {:version1, 0b10} -> 32000 + {:version2, 0b00} -> 22050 + {:version2, 0b01} -> 24000 + {:version2, 0b10} -> 16000 + {:"version2.5", 0b00} -> 11025 + {:"version2.5", 0b01} -> 12000 + {:"version2.5", 0b10} -> 8000 _ -> :bad end end