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sbc: fix sythesis

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This commit is contained in:
Milanka Ringwald 2016-05-12 15:14:11 +02:00
parent d0818c25c1
commit 4771dcb8bb
2 changed files with 15 additions and 9 deletions
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2
test/sbc/sbc_decoder.py
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@ -123,7 +123,7 @@ def sbc_frame_synthesis(frame, ch, blk, proto_table):
for k in range(M2):
V[ch][k] = 0
for i in range(M):
N = np.cos((i+0.5)*(k+2)*np.pi/M)
N = np.cos((i+0.5)*(k+M/2)*np.pi/M)
V[ch][k] += N * S[i]
for i in range(5):

22
test/sbc/sbc_decoder_test.py
View File

@ -54,10 +54,11 @@ def sbc_compare_headers(frame_count, actual_frame, expected_frame):
return 0
file_size = 0
def get_actual_frame(fin):
global file_size
actual_frame = SBCFrame()
sbc_unpack_frame(fin, actual_frame)
sbc_unpack_frame(fin, file_size - fin.tell(), actual_frame)
sbc_reconstruct_subband_samples(actual_frame)
sbc_synthesis(actual_frame)
return actual_frame
@ -90,17 +91,20 @@ try:
fin_expected = wave.open(decoder_expected_wav, 'rb')
nr_channels, sampwidth, sampling_frequency, nr_audio_frames, comptype, compname = fin_expected.getparams()
# print nr_channels, sampwidth, sampling_frequency, nr_audio_frames, comptype, compname
with open(decoder_input_sbc, 'rb') as fin:
try:
subband_frame_count = 0
fin.seek(0,2)
file_size = fin.tell()
fin.seek(0,0)
while True:
if subband_frame_count % 200 == 0:
print "== Frame %d ==" % (subband_frame_count)
print ("== Frame %d ==" % subband_frame_count)
actual_frame = get_actual_frame(fin)
expected_frame = get_expected_frame(fin_expected, actual_frame.nr_blocks,
actual_frame.nr_subbands, nr_channels,
actual_frame.bitpool, sampling_frequency,
@ -109,21 +113,23 @@ try:
err = sbc_compare_headers(subband_frame_count, actual_frame, expected_frame)
if err < 0:
print ("Headers differ \n%s\n%s" % (actual_frame, expected_frame))
exit(1)
err = sbc_compare_pcm(subband_frame_count, actual_frame, expected_frame)
if err < 0:
print ("PCMs differ \n%s\n%s" % (actual_frame.pcm, expected_frame.pcm))
exit(1)
if subband_frame_count == 0:
print actual_frame
print actual_frame, expected_frame
subband_frame_count += 1
except TypeError:
fin_expected.close()
fin.close()
print "DONE, max MSE PCM error %d", max_error
print ("DONE, max MSE PCM error %d" % max_error)
exit(0)
except IOError as e: