# This unit test data file is a collection of TRAU-AMR-8k frames, to be
# presented to osmo_amrt_decode_trau_frame() in sequence by way of trau2rtp_amr
# test program.

# The following frames have been emitted by Nokia TCSM2 TRAU under these
# conditions:
#
# - PCM circuit type F;
# - TRAU channel activated in AMR-8k mode with DTXd enabled;
# - CMR set to 0 (MR475) in the UL frame stream fed to the TRAU;
# - G.711 PCMA input was constant 0x54 (idle).
#
# Since the input was a form of silence (but not EHF) and DTXd was enabled,
# the TRAU emitted 7 speech frames (encoding the silence) followed by AMR DTX
# pattern of one Sid_Update every 8 frames.
#
# Please note that unlike FR/EFR, AMR TRAU frame format and semantics are
# exactly the same in UL and DL directions.  Therefore, frames emitted
# by a historical hardware TRAU are just as good for unit test purposes
# as those emitted by an E1 BTS - but much easier to produce in Themyscira lab.

RESET
00fd8e53bb94908390889e8097c0f0c1f886dfff
00f6bc72e39e958f80889e81d7c0b192f886dfff
00f38d7ed1ee948380989e81d7c0b0b5f886dfff
00f3bd63e39e948380b89e81d7c0b0b5f886dfff
00ff8f71c1ee948380a09e81d7c0b0b5f886dfff
00f3bd63e39e948380b89e81d7c0b0b5f886dfff
00ff8f71c1ee948380a09e81d7c0b0b5f886dfff
0081d360bffffffffff883ffffffffffffffffff
0081c040bffffffffff883ffffffffffffffffff
0081d040bffffffffff883ffffffffffffffffff
0081c26089d8f89ba09883ffffffffffffffffff
0081d040bffffffffff883ffffffffffffffffff

# The following frames have been emitted by the same Nokia TCSM2 TRAU
# under these slightly different conditions:
#
# - G.711 PCMA input was constant 0xD5 (silence);
# - CMR in the UL frame stream fed to the TRAU (itt-ater-16 test program)
#   was manually stepped through modes 0 through 4, the 5 possible modes
#   for TRAU-AMR-8k.
#
# G.711 A-law (but not mu-law) has this quirk whereby the silence code (0xD5)
# decodes into 0x0008 in 16-bit linear PCM, rather than solid 0 - and all GSM
# speech encoders, including AMR, interpret a frame of all 0x0008 samples as
# an encoder homing frame (EHF).  TCSM2 AMR speech encoder also behaves in this
# manner, hence the DL output from the TRAU channel was nothing but endless
# DHFs.  This stream of DHFs exhibits mode switches on RIF=0 output frames
# whenever CMR input to the TRAU was changed.
#
# The following extract exhibits just two frames of each mode, a pair of
# RIF=0 and RIF=1 output.

RESET
00ff8e49e9e3988394b09ef0d7d8e0c1fab6dfff
00ffbe49e9e3988394809ef0d7d8e0c1fab6dfff
00ff9f62bab8e680fbe89e81c5dfb7fbd7d1f7ff
00ffcf62bab8e680fbf89e81c5dfb7fbd7d1f7ff
00fcac78e2fdf480fbd09e80f3ec87e7eff083ef
00fcdc78e2fdf480fbe09e80f3ec87e7eff083ef
00fc93c6976fa00bc06f898fc2c1b8bc83d8e380
00fce3c6976fa00bc01f898fc2c1b8bc83d8e380
3f079145f7a006f0076208fc4c1ba6f01b003780
3f07f145f7a006f0136208fc4c1ba6f01b003780

# Note this quirk of Nokia TCSM2, visible in all of the DL outputs showcased
# above: for both speech and DTXd No_Speech frames in 8k mode, it sets CMR in
# its DL output to the same mode as its speech output mode (DL CMI, controlled
# by UL CMR).  See the corresponding comment in trau-amr-16k.in for further
# explanation.
#
# When this quirk of TCSM2 is combined with CMR/CMI alternation in sequences
# of speech frames and the stream of TRAU frames is converted to RTP, the
# change in CMR will lag the change in FT by one frame.

# Test decoder behaviour when a RIF=1 frame occurs first out of reset,
# followed by RIF=0.  Mode 2 DHFs were taken from TCSM2 output above,
# but reordered for this test.

RESET
00fcdc78e2fdf480fbe09e80f3ec87e7eff083ef
00fcac78e2fdf480fbd09e80f3ec87e7eff083ef
00fcdc78e2fdf480fbe09e80f3ec87e7eff083ef
00fcac78e2fdf480fbd09e80f3ec87e7eff083ef

# Test decoding of No_Data frames beginning with RIF=1, including shifts in
# RIF order (repeated RIF=0 or RIF=1) and UFE/DFE indication.

RESET
0081d040bffffffffff883ffffffffffffffffff
0081c040bffffffffff883ffffffffffffffffff
0080d040bffffffffff883ffffffffffffffffff
0081c040bffffffffff883ffffffffffffffffff
0081c040bffffffffff883ffffffffffffffffff
0081d040bffffffffff883ffffffffffffffffff
0081d040bffffffffff883ffffffffffffffffff