etcpak: We only need the compression code, remove rest of etcpak app

We do our own image loading, threading, and memory management in Godot already,
so the only components we need from etcpak (at least as of now) are the
`Compress*` methods defined in `ProcessDxtc.cpp` and `ProcessRGB.cpp`.

So we don't need to compile or vendor the rest.

1 files changed, 0 insertions, 77 deletions

diff --git a/thirdparty/etcpak/DataProvider.cpp b/thirdparty/etcpak/DataProvider.cpp
deleted file mode 100644
index 6bd4b105ed..0000000000
--- a/thirdparty/etcpak/DataProvider.cpp
+++ /dev/null
@@ -1,77 +0,0 @@
-#include <assert.h>
-#include <utility>
-
-#include "BitmapDownsampled.hpp"
-#include "DataProvider.hpp"
-#include "MipMap.hpp"
-
-DataProvider::DataProvider( const char* fn, bool mipmap, bool bgr )
-    : m_offset( 0 )
-    , m_mipmap( mipmap )
-    , m_done( false )
-    , m_lines( 32 )
-{
-    m_bmp.emplace_back( new Bitmap( fn, m_lines, bgr ) );
-    m_current = m_bmp[0].get();
-}
-
-DataProvider::~DataProvider()
-{
-}
-
-unsigned int DataProvider::NumberOfParts() const
-{
-    unsigned int parts = ( ( m_bmp[0]->Size().y / 4 ) + m_lines - 1 ) / m_lines;
-
-    if( m_mipmap )
-    {
-        v2i current = m_bmp[0]->Size();
-        int levels = NumberOfMipLevels( current );
-        unsigned int lines = m_lines;
-        for( int i=1; i<levels; i++ )
-        {
-            assert( current.x != 1 || current.y != 1 );
-            current.x = std::max( 1, current.x / 2 );
-            current.y = std::max( 1, current.y / 2 );
-            lines *= 2;
-            parts += ( ( std::max( 4, current.y ) / 4 ) + lines - 1 ) / lines;
-        }
-        assert( current.x == 1 && current.y == 1 );
-    }
-
-    return parts;
-}
-
-DataPart DataProvider::NextPart()
-{
-    assert( !m_done );
-
-    unsigned int lines = m_lines;
-    bool done;
-
-    const auto ptr = m_current->NextBlock( lines, done );
-    DataPart ret = {
-        ptr,
-        std::max<unsigned int>( 4, m_current->Size().x ),
-        lines,
-        m_offset
-    };
-
-    m_offset += m_current->Size().x / 4 * lines;
-
-    if( done )
-    {
-        if( m_mipmap && ( m_current->Size().x != 1 || m_current->Size().y != 1 ) )
-        {
-            m_lines *= 2;
-            m_bmp.emplace_back( new BitmapDownsampled( *m_current, m_lines ) );
-            m_current = m_bmp[m_bmp.size()-1].get();
-        }
-        else
-        {
-            m_done = true;
-        }
-    }
-
-    return ret;
-}