| Alexandre Lision | 67916dd | 2014-01-24 13:33:04 -0500 | [diff] [blame] | 1 | # $Id$ |
| 2 | |
| 3 | # PLAYFILE -> RECFILE: |
| 4 | # Input file is played and is recorded to output, then compare them. |
| 5 | # Useful to tes clock rates compatibility and resample quality |
| 6 | # null-audio |
| 7 | # port 1: wav file input xxxxxx.clock_rate.wav, e.g: test1.8.wav |
| 8 | # port 2: wav file ouput xxxxxx.clock_rate.wav, e.g: res1.8.wav |
| 9 | # wav input must be more than 3 seconds long |
| 10 | |
| 11 | import time |
| 12 | import imp |
| 13 | import sys |
| 14 | import re |
| 15 | import subprocess |
| 16 | import inc_const as const |
| 17 | from inc_cfg import * |
| 18 | |
| 19 | # Load configuration |
| 20 | cfg_file = imp.load_source("cfg_file", ARGS[1]) |
| 21 | |
| 22 | # WAV similarity calculator |
| 23 | COMPARE_WAV_EXE = "" |
| 24 | if sys.platform.find("win32")!=-1: |
| 25 | COMPARE_WAV_EXE = "tools/cmp_wav.exe" |
| 26 | G_INUNIX = False |
| 27 | else: |
| 28 | COMPARE_WAV_EXE = "tools/cmp_wav" |
| 29 | G_INUNIX = True |
| 30 | |
| 31 | |
| 32 | # Threshold to declare degradation is too high when result is lower than this value |
| 33 | COMPARE_THRESHOLD = 2 |
| 34 | |
| 35 | # COMPARE params |
| 36 | input_filename = "" # Input filename |
| 37 | output_filename = "" # Output filename |
| 38 | |
| 39 | # Test body function |
| 40 | def test_func(t): |
| 41 | global input_filename |
| 42 | global output_filename |
| 43 | |
| 44 | endpt = t.process[0] |
| 45 | |
| 46 | # Get input file name |
| 47 | input_filename = re.compile(const.MEDIA_PLAY_FILE).search(endpt.inst_param.arg).group(1) |
| 48 | endpt.trace("Input file = " + input_filename) |
| 49 | |
| 50 | # Get output file name |
| 51 | output_filename = re.compile(const.MEDIA_REC_FILE).search(endpt.inst_param.arg).group(1) |
| 52 | endpt.trace("Output file = " + output_filename) |
| 53 | |
| 54 | # Find appropriate clock rate for the input file |
| 55 | clock_rate = re.compile(".+(\.\d+\.wav)$").match(output_filename).group(1) |
| 56 | if (clock_rate==None): |
| 57 | endpt.trace("Cannot compare input & output, incorrect output filename format") |
| 58 | return |
| 59 | input_filename = re.sub("\.\d+\.wav$", clock_rate, input_filename) |
| 60 | endpt.trace("WAV file to be compared with output = " + input_filename) |
| 61 | |
| 62 | # Connect input-output file |
| 63 | endpt.sync_stdout() |
| 64 | |
| 65 | endpt.send("cc 1 2") |
| 66 | endpt.expect(const.MEDIA_CONN_PORT_SUCCESS) |
| 67 | |
| 68 | # Wait |
| 69 | time.sleep(3) |
| 70 | |
| 71 | endpt.sync_stdout() |
| 72 | |
| 73 | # Disconnect input-output file |
| 74 | endpt.send("cd 1 2") |
| 75 | endpt.expect(const.MEDIA_DISCONN_PORT_SUCCESS) |
| 76 | |
| 77 | |
| 78 | # Post body function |
| 79 | def post_func(t): |
| 80 | global input_filename |
| 81 | global output_filename |
| 82 | |
| 83 | endpt = t.process[0] |
| 84 | |
| 85 | # Check WAV similarity |
| 86 | fullcmd = COMPARE_WAV_EXE + " " + input_filename + " " + output_filename + " " + "3000" |
| 87 | endpt.trace("Popen " + fullcmd) |
| 88 | cmp_proc = subprocess.Popen(fullcmd, shell=G_INUNIX, stdout=subprocess.PIPE, universal_newlines=True) |
| 89 | |
| 90 | # Parse similarity ouput |
| 91 | line = cmp_proc.stdout.readline() |
| 92 | mo_sim_val = re.match(".+=\s+(\d+)", line) |
| 93 | if (mo_sim_val == None): |
| 94 | raise TestError("Error comparing WAV files") |
| 95 | return |
| 96 | |
| 97 | # Evaluate the similarity value |
| 98 | sim_val = mo_sim_val.group(1) |
| 99 | if (sim_val >= COMPARE_THRESHOLD): |
| 100 | endpt.trace("WAV similarity = " + sim_val) |
| 101 | else: |
| 102 | raise TestError("WAV degraded heavily, similarity = " + sim_val) |
| 103 | |
| 104 | |
| 105 | # Here where it all comes together |
| 106 | test = cfg_file.test_param |
| 107 | test.test_func = test_func |
| 108 | test.post_func = post_func |