View source for ADPCM

__FORCETOC__
{{codec audio|id=(many)|mod=adpcm}}
{{mmwiki|ADPCM}}
'''ADPCM''' or '''Adaptive Differential PCM''' is a variant of [[PCM]].

== FourCC ==
This codec is known by the following [[FourCC]]s. The ones in hex code (e.g. <code>ms 0x00 0x02</code>) [[wikipedia:Control character|cannot be represented conventionally]]. Omit any spaces when typing (e.g. [<code>xa&nbsp;&nbsp;</code>] is just <code>xa</code>):
{| class="wikitable sortable"
! scope="col" | Internal name !! scope="col" | FourCC
|-
| VLC_CODEC_ADPCM_4XM || [<code>4xma</code>]
|-
| VLC_CODEC_ADPCM_EA || [<code>ADEA</code>]
|-
| VLC_CODEC_ADPCM_XA || [<code>xa&nbsp;&nbsp;</code>]
|-
| VLC_CODEC_ADPCM_ADX || [<code>adx&nbsp;</code>]
|-
| VLC_CODEC_ADPCM_IMA_WS || [<code>AIWS</code>]
|-
| VLC_CODEC_ADPCM_G722 || [<code>g722</code>]
|-
| VLC_CODEC_ADPCM_G726 || [<code>g726</code>]
|-
| VLC_CODEC_ADPCM_SWF || [<code>SWFa</code>]
|-
| VLC_CODEC_ADPCM_MS || [<code>ms 0x00 0x02</code>]
|-
| VLC_CODEC_ADPCM_IMA_WAV || [<code>ms 0x00 0x11</code>]
|-
| VLC_CODEC_ADPCM_IMA_AMV || [<code>imav</code>]
|-
| VLC_CODEC_ADPCM_IMA_QT || [<code>ima4</code>]
|-
| VLC_CODEC_ADPCM_YAMAHA || [<code>ms 0x00 0x20</code>]
|-
| VLC_CODEC_ADPCM_DK3 || [<code>ms 0x00 0x62</code>]
|-
| VLC_CODEC_ADPCM_DK4 || [<code>ms 0x00 0x61</code>]
|-
| VLC_CODEC_ADPCM_CREATIVE || [<code>ms 0x00 0xC0</code>]
|-
| VLC_CODEC_ADPCM_SBPRO_2 || [<code>ms 0x00 0xC2</code>]
|-
| VLC_CODEC_ADPCM_SBPRO_3 || [<code>ms 0x00 0xC3</code>]
|-
| VLC_CODEC_ADPCM_SBPRO_4 || [<code>ms 0x00 0xC4</code>]
|-
| VLC_CODEC_ADPCM_THP || [<code>THPA</code>]
|-
| VLC_CODEC_ADPCM_XA_EA || [<code>XAJ0</code>]
|-
| VLC_CODEC_ADPCM_IMA_EA_SEAD || [<code>SEAD</code>]
|-
| VLC_CODEC_ADPCM_EA_R1 || [<code>EAR1</code>]
|-
| VLC_CODEC_ADPCM_IMA_APC || [<code>AIPC</code>]
|}

== Source code ==
{{file|modules/codec/adpcm.c|audio codec}}
{{file|include/vlc_fourcc.h|FourCC definitions - you will have to search for <code>ADPCM</code>}}