MT#55283 restore AMR unit tests

These had unintentionally been disabled and so have fallen derelict.

Replace the makefile `with_amr_tests` conditional with
`RTPENGINE_EXTENDED_TESTS`. The previous `with_amr_tests` was not
actually set anywhere and so these tests never ran. The new
`RTPENGINE_EXTENDED_TESTS` is used as switch for other tests already.

Bring the tests up to date so that they compile and run.

Allow for alternative AMR bit encodings as different versions of the
codec produce different outputs.

Use an inline `struct cb_args` to pass these expected strings to the
callback functions.

Update `int` to `size_t` where appropriate.

Make a copy of the format string in `__sdp_pt_fmt` as the parsing
function temporarily writes into the string, which means a readonly
string literal doesn't work.

Update the AMR tests in test-transcode to the new API and new expected
values.

Change-Id: Ic3332e696522a28595ea06be9996001d3ab7686e

t/.gitignore

@@ -82,3 +82,5 @@ audio_player.c
 mix_in_x64_avx2.S
 mix_in_x64_avx512bw.S
 mix_in_x64_sse2.S
+test-amr-decode
+test-amr-encode

t/Makefile

@@ -29,7 +29,7 @@ CFLAGS+=	$(shell pkg-config --cflags libevent_pthreads)
 CFLAGS+=	$(shell pkg-config xmlrpc_client --cflags 2> /dev/null || xmlrpc-c-config client --cflags)
 CFLAGS+=	$(shell pkg-config xmlrpc --cflags 2> /dev/null)
 CFLAGS+=	$(shell pkg-config xmlrpc_util --cflags 2> /dev/null)
-ifeq ($(with_amr_tests),yes)
+ifeq ($(RTPENGINE_EXTENDED_TESTS),1)
 CFLAGS+=	-DWITH_AMR_TESTS
 endif
 CFLAGS+=	$(shell mysql_config --cflags)
@@ -72,7 +72,7 @@ ifeq ($(with_transcoding),yes)
 SRCS+=		test-transcode.c test-dtmf-detect.c test-payload-tracker.c test-resample.c test-stats.c
 SRCS+=		spandsp_recv_fax_pcm.c spandsp_recv_fax_t38.c spandsp_send_fax_pcm.c \
 		spandsp_send_fax_t38.c test-mix-buffer.c
-ifeq ($(with_amr_tests),yes)
+ifeq ($(RTPENGINE_EXTENDED_TESTS),1)
 SRCS+=		test-amr-decode.c test-amr-encode.c
 endif
 LIBSRCS+=	codeclib.strhash.c resample.c socket.c streambuf.c dtmflib.c poller.c
@@ -99,7 +99,7 @@ include ../lib/common.Makefile
 TESTS=		test-bitstr aes-crypt aead-aes-crypt test-const_str_hash.strhash
 ifeq ($(with_transcoding),yes)
 TESTS+=		test-transcode test-dtmf-detect test-payload-tracker test-resample test-stats test-mix-buffer
-ifeq ($(with_amr_tests),yes)
+ifeq ($(RTPENGINE_EXTENDED_TESTS),1)
 TESTS+=		test-amr-decode test-amr-encode
 endif
 endif
@@ -197,9 +197,11 @@ spandsp_recv_fax_t38:	spandsp_recv_fax_t38.o
 
 spandsp_raw_fax_tests: spandsp_send_fax_pcm spandsp_recv_fax_pcm spandsp_send_fax_t38 spandsp_recv_fax_t38
 
-test-amr-decode: test-amr-decode-test.o $(COMMONOBJS) codeclib.strhash.o resample.o dtmflib.o resample.o
+test-amr-decode: test-amr-decode.o $(COMMONOBJS) codeclib.strhash.o resample.o dtmflib.o resample.o \
+	mvr2s_x64_avx2.o mvr2s_x64_avx512.o
 
-test-amr-encode: test-amr-encode-test.o $(COMMONOBJS) codeclib.strhash.o resample.o dtmflib.o
+test-amr-encode: test-amr-encode.o $(COMMONOBJS) codeclib.strhash.o resample.o dtmflib.o \
+	mvr2s_x64_avx2.o mvr2s_x64_avx512.o
 
 test-dtmf-detect: test-dtmf-detect.o