Ne cedere ineluctabili possimus![]() | Ciao, 
mon code pour exécuter file audio MP3 en utilisant les Classes "MediaPipeline" et "MediaControl" du Composant "gb.media".
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| PUBLIC SUB Main()
DIM pl AS MediaPipeline
DIM src, dcd, snk AS MediaControl
DIM fileMP3 AS STRING
DIM dur, i AS INTEGER
DIM tm AS DATE
fileMP3 = "/Emplacement/du/fichier.mp3"
IF NOT Exist(fileMP3) THEN Error.Raise("Erreur, ton file MP3 n'existe pas !")
pl = NEW MediaPipeline
src = NEW MediaControl(pl, "filesrc")
src["location"] = fileMP3
dcd = NEW MediaControl(pl, "mad")
snk = NEW MediaControl(pl, "alsasink")
src.LinkTo(dcd)
dcd.LinkTo(snk)
pl.Play()
' Calls the function to get mp3 file duration:
dur = DurataMP3(fileMP3)
tm = Now
REPEAT
i = DateDiff(tm, Now, gb.Millisecond)
WRITE "\rTemps ecoule: " & Date(0, 0, 0, 0, 0, 0, i)
WAIT 0.01
UNTIL i >= dur
' Frees memory and goes to end:
pl.Stop
pl.Close
WRITE "\nExécution complétée !"
END
PRIVATE FUNCTION DurataMP3(mp3 AS STRING) AS INTEGER
DIM s, ver_mp3, layer AS STRING
DIM j, frequenza, durata AS INTEGER
DIM vB, lB, brB, frB AS BYTE
DIM initium, bitrate AS SHORT
PRINT "Fichier audio mp3: "; File.Name(mp3)
s = File.Load(mp3)
PRINT "\nTaille: "; Len(s); " byte"
initium = 1
FOR j = initium TO Len(s) - 1
IF (Asc(s, j) = 255) AND (Asc(s, j + 1) > 241) AND (Asc(s, j + 2) > 15) THEN
' Find the MP3 file version:
vB = Asc(s, j + 1) AND 24
SELECT CASE vB
CASE 0
ver_mp3 = "2.5"
CASE 16
ver_mp3 = "2"
CASE 24
ver_mp3 = "1"
END SELECT
' Find the "Layer" of the mp3 file:
lB = Asc(s, j + 1) AND 6
SELECT CASE lB
CASE 2
layer = "III"
CASE 4
layer = "II"
CASE 6
layer = "I"
END SELECT
PRINT "Version MPEG = "; ver_mp3, "Layer = "; layer
' Extract the frequency and bitrate values of MP3 file:
brB = Asc(s, j + 2) AND 240
bitrate = EstraeBitRate(ver_mp3, layer, brB)
frB = Asc(s, j + 2) AND 12
frequenza = EstraeFrequenza(ver_mp3, frB)
EXIT
ENDIF
NEXT
durata = Fix((Len(s) / bitrate) * 8)
PRINT "BitRate = "; bitrate; " kbps"
PRINT "Frequence = hz "; frequenza
PRINT "Duree = "; Date(0, 0, 0, 0, 0, 0, durata)
RETURN durata
END
PRIVATE FUNCTION EstraeBitRate(Vmpeg AS STRING, layB AS STRING, bitB AS BYTE) AS SHORT
DIM velCamp AS SHORT
IF Vmpeg = "1" THEN ' In case of Mpeg vers. 1
SELECT CASE layB ' Check the Layer
CASE "I"
SELECT CASE bitB
CASE 16
velCamp = 32
CASE 32
velCamp = 64
CASE 48
velCamp = 96
CASE 64
velCamp = 128
CASE 80
velCamp = 160
CASE 96
velCamp = 192
CASE 112
velCamp = 224
CASE 128
velCamp = 256
CASE 144
velCamp = 288
CASE 160
velCamp = 320
CASE 176
velCamp = 352
CASE 192
velCamp = 384
CASE 208
velCamp = 416
CASE 224
velCamp = 448
END SELECT
CASE "II"
SELECT CASE bitB
CASE 16
velCamp = 32
CASE 32
velCamp = 48
CASE 48
velCamp = 56
CASE 64
velCamp = 64
CASE 80
velCamp = 80
CASE 96
velCamp = 96
CASE 112
velCamp = 112
CASE 128
velCamp = 128
CASE 144
velCamp = 160
CASE 160
velCamp = 192
CASE 176
velCamp = 224
CASE 192
velCamp = 256
CASE 208
velCamp = 320
CASE 224
velCamp = 384
END SELECT
CASE "III"
SELECT CASE bitB
CASE 16
velCamp = 32
CASE 32
velCamp = 40
CASE 48
velCamp = 48
CASE 64
velCamp = 56
CASE 80
velCamp = 64
CASE 96
velCamp = 80
CASE 112
velCamp = 96
CASE 128
velCamp = 112
CASE 144
velCamp = 128
CASE 160
velCamp = 160
CASE 176
velCamp = 192
CASE 192
velCamp = 224
CASE 208
velCamp = 256
CASE 224
velCamp = 320
END SELECT
END SELECT
ELSE
SELECT CASE layB ' Check the Layer
CASE "I"
SELECT CASE bitB
CASE 16
velCamp = 32
CASE 32
velCamp = 48
CASE 48
velCamp = 56
CASE 64
velCamp = 64
CASE 80
velCamp = 80
CASE 96
velCamp = 96
CASE 112
velCamp = 112
CASE 128
velCamp = 128
CASE 144
velCamp = 144
CASE 160
velCamp = 160
CASE 176
velCamp = 176
CASE 192
velCamp = 192
CASE 208
velCamp = 224
CASE 224
velCamp = 256
END SELECT
CASE "II" TO "III"
SELECT CASE bitB
CASE 16
velCamp = 8
CASE 32
velCamp = 16
CASE 48
velCamp = 24
CASE 64
velCamp = 32
CASE 80
velCamp = 40
CASE 96
velCamp = 48
CASE 112
velCamp = 56
CASE 128
velCamp = 64
CASE 144
velCamp = 80
CASE 160
velCamp = 96
CASE 176
velCamp = 112
CASE 192
velCamp = 128
CASE 208
velCamp = 144
CASE 224
velCamp = 320
END SELECT
END SELECT
ENDIF
RETURN velCamp
END
PRIVATE FUNCTION EstraeFrequenza(Vmpeg AS STRING, fre AS BYTE) AS INTEGER
DIM frq AS INTEGER
SELECT CASE Vmpeg
CASE "1" ' In case of Mpeg vers. 1
SELECT CASE fre
CASE 0
frq = 44100
CASE 4
frq = 48000
CASE 8
frq = 32000
END SELECT
CASE "2" ' In case of Mpeg vers. 2
SELECT CASE fre
CASE 0
frq = 22050
CASE 4
frq = 24000
CASE 8
frq = 16000
END SELECT
CASE "2.5" ' In case of Mpeg vers. 2.5
SELECT CASE fre
CASE 0
frq = 11025
CASE 4
frq = 12000
CASE 8
frq = 8000
END SELECT
END SELECT
RETURN frq
END
|
« Vita non suavis esse potest, nec Mors amara. » |
Iguane : Il Gambas Uniquement pour Activer ses NEurones | C'est chouette, merci.
On doit pouvoir faire quelques simplifications dans les select
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| CASE "I"
velCamp = 2*bitB
CASE "II"
SELECT CASE bitB
CASE 16
velCamp = 32
CASE 32
velCamp = 48
CASE 48
velCamp = 56
CASE 64 TO 128
velCamp = bitB
CASE 144
velCamp = 160
CASE 160
velCamp = 192
CASE 176
velCamp = 224
CASE 192
velCamp = 256
CASE 208
velCamp = 320
CASE 224
velCamp = 384
END SELECT
|
ou plus compact :
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| DIM allowedBitB AS Short[]
DIM layIIvelCamp AS Short[]
allowedBitB = [16, 32, 48, 64, 80, 96, 112, 128, 144, 160, 176, 192, 208, 224]
layIIvelCamp = [32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384]
velCamp = layIIvelCamp[allowedBitB.Find(bitB)]
|
 Flachy Joe |