Add libavresample

This is a new library for audio sample format, channel layout, and sample rate
conversion.

Changelog

@@ -16,6 +16,7 @@ version <next>:
 - RealAudio Lossless decoder
 - ZeroCodec decoder
 - drop support for avconv without libavfilter
+- add libavresample audio conversion library
 
 
 version 0.8:

Makefile

@@ -20,7 +20,7 @@ $(foreach VAR,$(SILENT),$(eval override $(VAR) = @$($(VAR))))
 $(eval INSTALL = @$(call ECHO,INSTALL,$$(^:$(SRC_PATH)/%=%)); $(INSTALL))
 endif
 
-ALLFFLIBS = avcodec avdevice avfilter avformat avutil swscale
+ALLFFLIBS = avcodec avdevice avfilter avformat avresample avutil swscale
 
 IFLAGS     := -I. -I$(SRC_PATH)
 CPPFLAGS   := $(IFLAGS) $(CPPFLAGS)
@@ -71,6 +71,7 @@ ALLMANPAGES = $(BASENAMES:%=%.1)
 FFLIBS-$(CONFIG_AVDEVICE) += avdevice
 FFLIBS-$(CONFIG_AVFILTER) += avfilter
 FFLIBS-$(CONFIG_AVFORMAT) += avformat
+FFLIBS-$(CONFIG_AVRESAMPLE) += avresample
 FFLIBS-$(CONFIG_AVCODEC)  += avcodec
 FFLIBS-$(CONFIG_SWSCALE)  += swscale
 

configure

@@ -110,6 +110,7 @@ Component options:
   --disable-avformat       disable libavformat build
   --disable-swscale        disable libswscale build
   --disable-avfilter       disable video filter support [no]
+  --disable-avresample     disable libavresample build [no]
   --disable-pthreads       disable pthreads [auto]
   --disable-w32threads     disable Win32 threads [auto]
   --enable-x11grab         enable X11 grabbing [no]
@@ -927,6 +928,7 @@ CONFIG_LIST="
     avdevice
     avfilter
     avformat
+    avresample
     avisynth
     bzlib
     dct
@@ -1536,7 +1538,7 @@ avdevice_deps="avcodec avformat"
 avformat_deps="avcodec"
 
 # programs
-avconv_deps="avcodec avfilter avformat swscale"
+avconv_deps="avcodec avfilter avformat avresample swscale"
 avplay_deps="avcodec avformat swscale sdl"
 avplay_select="rdft"
 avprobe_deps="avcodec avformat"
@@ -1684,6 +1686,7 @@ enable avcodec
 enable avdevice
 enable avfilter
 enable avformat
+enable avresample
 enable avutil
 enable swscale
 
@@ -3385,6 +3388,7 @@ get_version LIBAVCODEC  libavcodec/version.h
 get_version LIBAVDEVICE libavdevice/avdevice.h
 get_version LIBAVFILTER libavfilter/version.h
 get_version LIBAVFORMAT libavformat/version.h
+get_version LIBAVRESAMPLE libavresample/version.h
 get_version LIBAVUTIL   libavutil/avutil.h
 get_version LIBSWSCALE  libswscale/swscale.h
 
@@ -3504,4 +3508,5 @@ pkgconfig_generate libavcodec "Libav codec library" "$LIBAVCODEC_VERSION" "$extr
 pkgconfig_generate libavformat "Libav container format library" "$LIBAVFORMAT_VERSION" "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
 pkgconfig_generate libavdevice "Libav device handling library" "$LIBAVDEVICE_VERSION" "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
 pkgconfig_generate libavfilter "Libav video filtering library" "$LIBAVFILTER_VERSION" "$extralibs"
+pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs"
 pkgconfig_generate libswscale "Libav image rescaling library" "$LIBSWSCALE_VERSION" "$LIBM" "libavutil = $LIBAVUTIL_VERSION"

doc/APIchanges

@@ -2,16 +2,20 @@ Never assume the API of libav* to be stable unless at least 1 month has passed
 since the last major version increase.
 
 The last version increases were:
-libavcodec:  2012-01-27
-libavdevice: 2011-04-18
-libavfilter: 2011-04-18
-libavformat: 2012-01-27
-libswscale:  2011-06-20
-libavutil:   2011-04-18
+libavcodec:    2012-01-27
+libavdevice:   2011-04-18
+libavfilter:   2011-04-18
+libavformat:   2012-01-27
+libavresample: 2012-xx-xx
+libswscale:    2011-06-20
+libavutil:     2011-04-18
 
 
 API changes, most recent first:
 
+2012-xx-xx - xxxxxxx - lavr 0.0.0
+  Add libavresample audio conversion library
+
 2012-xx-xx - xxxxxxx - lavu 51.28.0 - audio_fifo.h
   Add audio FIFO functions:
     av_audio_fifo_free()

libavresample/Makefile

@@ -0,0 +1,15 @@
+NAME = avresample
+FFLIBS = avutil
+
+HEADERS = avresample.h                                                  \
+          version.h
+
+OBJS = audio_convert.o                                                  \
+       audio_data.o                                                     \
+       audio_mix.o                                                      \
+       audio_mix_matrix.o                                               \
+       options.o                                                        \
+       resample.o                                                       \
+       utils.o
+
+TESTPROGS = avresample