package/audiofile: Fix static linking with libsndfile

Fixes mpd:
http://autobuild.buildroot.net/results/799/7997ccd698f03885f98d00bd150dc3a578e4b161/

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/audiofile/0009-Fix-static-linking-with-libsndfile.patch

@@ -0,0 +1,193 @@
+From d89a938f48e97b5770509d53c5478c5c3008d6e8 Mon Sep 17 00:00:00 2001
+From: Bernd Kuhls <bernd.kuhls@t-online.de>
+Date: Sat, 27 May 2017 17:53:33 +0200
+Subject: [PATCH 1/1] Fix static linking with libsndfile
+
+libsndfile and audiofile both contain mixXX functions in their alac
+code which lead to symbol name clashes when apps like mpd try to
+statically link to both audiofile and libsndfile at the same time.
+
+This patch renames these functions to avoid the problem which was
+detected by the buildroot autobuilders:
+http://autobuild.buildroot.net/results/799/7997ccd698f03885f98d00bd150dc3a578e4b161/
+
+Patch sent upstream: https://github.com/mpruett/audiofile/pull/45
+
+Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
+---
+ libaudiofile/alac/ALACEncoder.cpp | 28 ++++++++++++++--------------
+ libaudiofile/alac/matrix_enc.c    |  8 ++++----
+ libaudiofile/alac/matrixlib.h     |  8 ++++----
+ 3 files changed, 22 insertions(+), 22 deletions(-)
+
+diff --git a/libaudiofile/alac/ALACEncoder.cpp b/libaudiofile/alac/ALACEncoder.cpp
+index da922c2..3d088cc 100644
+--- a/libaudiofile/alac/ALACEncoder.cpp
++++ b/libaudiofile/alac/ALACEncoder.cpp
+@@ -332,19 +332,19 @@ int32_t ALACEncoder::EncodeStereo( BitBuffer * bitstream, void * inputBuffer, ui
+         switch ( mBitDepth )
+         {
+             case 16:
+-                mix16( (int16_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples/dilate, mixBits, mixRes );
++                audiofile_alac_mix16( (int16_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples/dilate, mixBits, mixRes );
+                 break;
+             case 20:
+-                mix20( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples/dilate, mixBits, mixRes );
++                audiofile_alac_mix20( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples/dilate, mixBits, mixRes );
+                 break;
+             case 24:
+                 // includes extraction of shifted-off bytes
+-                mix24( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples/dilate,
++                audiofile_alac_mix24( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples/dilate,
+                         mixBits, mixRes, mShiftBufferUV, bytesShifted );
+                 break;
+             case 32:
+                 // includes extraction of shifted-off bytes
+-                mix32( (int32_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples/dilate,
++                audiofile_alac_mix32( (int32_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples/dilate,
+                         mixBits, mixRes, mShiftBufferUV, bytesShifted );
+                 break;
+         }
+@@ -379,19 +379,19 @@ int32_t ALACEncoder::EncodeStereo( BitBuffer * bitstream, void * inputBuffer, ui
+ 	switch ( mBitDepth )
+ 	{
+ 		case 16:
+-			mix16( (int16_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples, mixBits, mixRes );
++			audiofile_alac_mix16( (int16_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples, mixBits, mixRes );
+ 			break;
+ 		case 20:
+-			mix20( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples, mixBits, mixRes );
++			audiofile_alac_mix20( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples, mixBits, mixRes );
+ 			break;
+ 		case 24:
+ 			// also extracts the shifted off bytes into the shift buffers
+-			mix24( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples,
++			audiofile_alac_mix24( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples,
+ 					mixBits, mixRes, mShiftBufferUV, bytesShifted );
+ 			break;
+ 		case 32:
+ 			// also extracts the shifted off bytes into the shift buffers
+-			mix32( (int32_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples,
++			audiofile_alac_mix32( (int32_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples,
+ 					mixBits, mixRes, mShiftBufferUV, bytesShifted );
+ 			break;
+ 	}
+@@ -605,19 +605,19 @@ int32_t ALACEncoder::EncodeStereoFast( BitBuffer * bitstream, void * inputBuffer
+ 	switch ( mBitDepth )
+ 	{
+ 		case 16:
+-			mix16( (int16_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples, mixBits, mixRes );
++			audiofile_alac_mix16( (int16_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples, mixBits, mixRes );
+ 			break;
+ 		case 20:
+-			mix20( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples, mixBits, mixRes );
++			audiofile_alac_mix20( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples, mixBits, mixRes );
+ 			break;
+ 		case 24:
+ 			// also extracts the shifted off bytes into the shift buffers
+-			mix24( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples,
++			audiofile_alac_mix24( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples,
+ 					mixBits, mixRes, mShiftBufferUV, bytesShifted );
+ 			break;
+ 		case 32:
+ 			// also extracts the shifted off bytes into the shift buffers
+-			mix32( (int32_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples,
++			audiofile_alac_mix32( (int32_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples,
+ 					mixBits, mixRes, mShiftBufferUV, bytesShifted );
+ 			break;
+ 	}
+@@ -756,7 +756,7 @@ int32_t ALACEncoder::EncodeStereoEscape( BitBuffer * bitstream, void * inputBuff
+ 			break;
+ 		case 20:
+ 			// mix20() with mixres param = 0 means de-interleave so use it to simplify things
+-			mix20( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples, 0, 0 );
++			audiofile_alac_mix20( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples, 0, 0 );
+ 			for ( index = 0; index < numSamples; index++ )
+ 			{
+ 				BitBufferWrite( bitstream, mMixBufferU[index], 20 );
+@@ -765,7 +765,7 @@ int32_t ALACEncoder::EncodeStereoEscape( BitBuffer * bitstream, void * inputBuff
+ 			break;
+ 		case 24:
+ 			// mix24() with mixres param = 0 means de-interleave so use it to simplify things
+-			mix24( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples, 0, 0, mShiftBufferUV, 0 );
++			audiofile_alac_mix24( (uint8_t *) inputBuffer, stride, mMixBufferU, mMixBufferV, numSamples, 0, 0, mShiftBufferUV, 0 );
+ 			for ( index = 0; index < numSamples; index++ )
+ 			{
+ 				BitBufferWrite( bitstream, mMixBufferU[index], 24 );
+diff --git a/libaudiofile/alac/matrix_enc.c b/libaudiofile/alac/matrix_enc.c
+index e194330..8abd556 100644
+--- a/libaudiofile/alac/matrix_enc.c
++++ b/libaudiofile/alac/matrix_enc.c
+@@ -57,7 +57,7 @@
+ 
+ // 16-bit routines
+ 
+-void mix16( int16_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples, int32_t mixbits, int32_t mixres )
++void audiofile_alac_mix16( int16_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples, int32_t mixbits, int32_t mixres )
+ {
+ 	int16_t	*	ip = in;
+ 	int32_t			j;
+@@ -95,7 +95,7 @@ void mix16( int16_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t num
+ // 20-bit routines
+ // - the 20 bits of data are left-justified in 3 bytes of storage but right-aligned for input/output predictor buffers
+ 
+-void mix20( uint8_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples, int32_t mixbits, int32_t mixres )
++void audiofile_alac_mix20( uint8_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples, int32_t mixbits, int32_t mixres )
+ {
+ 	int32_t		l, r;
+ 	uint8_t *	ip = in;
+@@ -140,7 +140,7 @@ void mix20( uint8_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t num
+ // 24-bit routines
+ // - the 24 bits of data are right-justified in the input/output predictor buffers
+ 
+-void mix24( uint8_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples,
++void audiofile_alac_mix24( uint8_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples,
+ 			int32_t mixbits, int32_t mixres, uint16_t * shiftUV, int32_t bytesShifted )
+ {	
+ 	int32_t		l, r;
+@@ -240,7 +240,7 @@ void mix24( uint8_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t num
+ // - otherwise, the calculations might overflow into the 33rd bit and be lost
+ // - therefore, these routines deal with the specified "unused lower" bytes in the "shift" buffers
+ 
+-void mix32( int32_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples,
++void audiofile_alac_mix32( int32_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples,
+ 			int32_t mixbits, int32_t mixres, uint16_t * shiftUV, int32_t bytesShifted )
+ {
+ 	int32_t	*	ip = in;
+diff --git a/libaudiofile/alac/matrixlib.h b/libaudiofile/alac/matrixlib.h
+index 0a4f371..5728b6d 100644
+--- a/libaudiofile/alac/matrixlib.h
++++ b/libaudiofile/alac/matrixlib.h
+@@ -38,17 +38,17 @@ extern "C" {
+ #endif
+ 
+ // 16-bit routines
+-void	mix16( int16_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples, int32_t mixbits, int32_t mixres );
++void	audiofile_alac_mix16( int16_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples, int32_t mixbits, int32_t mixres );
+ void	unmix16( int32_t * u, int32_t * v, int16_t * out, uint32_t stride, int32_t numSamples, int32_t mixbits, int32_t mixres );
+ 
+ // 20-bit routines
+-void	mix20( uint8_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples, int32_t mixbits, int32_t mixres );
++void	audiofile_alac_mix20( uint8_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples, int32_t mixbits, int32_t mixres );
+ void	unmix20( int32_t * u, int32_t * v, uint8_t * out, uint32_t stride, int32_t numSamples, int32_t mixbits, int32_t mixres );
+ 
+ // 24-bit routines
+ // - 24-bit data sometimes compresses better by shifting off the bottom byte so these routines deal with
+ //	 the specified "unused lower bytes" in the combined "shift" buffer
+-void	mix24( uint8_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples,
++void	audiofile_alac_mix24( uint8_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples,
+ 				int32_t mixbits, int32_t mixres, uint16_t * shiftUV, int32_t bytesShifted );
+ void	unmix24( int32_t * u, int32_t * v, uint8_t * out, uint32_t stride, int32_t numSamples,
+ 				 int32_t mixbits, int32_t mixres, uint16_t * shiftUV, int32_t bytesShifted );
+@@ -57,7 +57,7 @@ void	unmix24( int32_t * u, int32_t * v, uint8_t * out, uint32_t stride, int32_t
+ // - note that these really expect the internal data width to be < 32-bit but the arrays are 32-bit
+ // - otherwise, the calculations might overflow into the 33rd bit and be lost
+ // - therefore, these routines deal with the specified "unused lower" bytes in the combined "shift" buffer
+-void	mix32( int32_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples,
++void	audiofile_alac_mix32( int32_t * in, uint32_t stride, int32_t * u, int32_t * v, int32_t numSamples,
+ 				int32_t mixbits, int32_t mixres, uint16_t * shiftUV, int32_t bytesShifted );
+ void	unmix32( int32_t * u, int32_t * v, int32_t * out, uint32_t stride, int32_t numSamples,
+ 				 int32_t mixbits, int32_t mixres, uint16_t * shiftUV, int32_t bytesShifted );
+-- 
+2.11.0
+