Flipnote Files/PPM: Difference between revisions

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 |- style="background-color: #ddd;"
 ! Length
+! Function
 ! Description
 |-
-| Frame count
+| Framecount
-| Sound effect usage. Each byte represents a frame, and bit #1 represents Sound effect 1, bit #2 represents Sound effect 2 and bit #3 represents Sound effect 3.
+| Sound effect usage.
+| Each byte represents a frame. bit #1(from Right to Left) represents Sound effect 1, bit #2 represents Sound effect 2 and bit #3 represents Sound effect 3. the last 5 bits is padding.
 |-
 | 0 - 3
-| Padding - Makes the offset to the next four bytes dividable by 4
+| Padding
+| 0x00 * (0 to 3). Makes the offset to the next value dividable by 4.
 |-
 | 4
-| Size of the background music(0x0000000 if not used)
+| Size of the background music.
+| The size of the background music in bytes in the audio data below. 0x0000000 if not used/emtpy.
 |-
 | 4
-| Size of sound effect #1(0x0000000 if not used)
+| Size of sound effect #1
+| The size of the sound effect #1 in bytes in the audio data below. 0x0000000 if not used/emtpy.
 |-
 | 4
-| Size of sound effect #2(0x0000000 if not used)
+| Size of sound effect #2
+| The size of the sound effect #3 in bytes in the audio data below. 0x0000000 if not used/emtpy.
 |-
 | 4
-| Size of sound effect #3(0x0000000 if not used)
+| Size of sound effect #3
+| The size of the sound effect #3 in bytes in the audio data below. 0x0000000 if not used/emtpy.
 |-
 | 1
-| Frame speed. To get the correct value, you must take 8, and subtract the decimal value of this byte.
+| Given Framespeed.
+| This is the speed of the flipnote. It's in the range of 1-8. To get the correct value, you must take 8, and subtract the decimal value of this byte.
 |-
-| 15
+| 1
-| Unknown - Used for sound decoding? (samplerate, compression, etc)
+| Current Framespeed when BGM was recorded.
+| This is the speed of the flipnote when the BGM was recorded/modified. It's in the range of 1-8. This is used to resample the sound to the new speed. To get the correct value, you must take 8, and subtract the decimal value of this byte.
+|-
+| 14
+| Padding
+| 0x00 * 14
 |}
-I have yet to figure out the sound decoding...--[[User:Pbsds|pbsds]] 17:38, 6 June 2010 (UTC)
+Then comes the audio data.
+*First comes the BGM(if used)
+*Then comes sound effect #1(if used)
+*Then comes sound effect #2(if used)
+*Then comes sound effect #3(if used)
+To decode the sound data, you must multiply each byte by 16 and run it as 32000Hz PCM data.
+----
+I have yet to figure out how to get rid of the noice when decoding sound...--[[User:Pbsds|pbsds]] 17:38, 6 June 2010 (UTC)