VimProject/testSound/testPlay.c at master · onlinehack/VimProject · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
#include <stdio.h>

#include "sndfile.h"

#include "portaudio.h"

typedef struct _SNDINFO {
	SNDFILE *sndfile;
	SF_INFO sf_info;
} SNDINFO;

int paProcess(SNDINFO *sndInfo);

void paErrorHandling(PaError paError);

void sfErrorHandling(int errorNumber);

int checkPaError(PaError paError);

int playCallback(void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, PaTimestamp outTime, void *userData);

int main (int argc, char *argv[]) {

	if (argc != 2) {
		printf("You should run this program with one wav file following.");
		return 1;
	}

	SNDFILE *sndfile;
	SF_INFO sf_info;
	sndfile = sf_open(argv[1], SFM_READ, &sf_info);
	if (sndfile == NULL) {
		sfErrorHandling(sf_error(sndfile));
		return 1;
	}

	printf("Open successfully.\n");

	printf("channels: %d\n", sf_info.channels);
	printf("format: %d\n", sf_info.format);
	printf("frames: %d\n", sf_info.frames);
	printf("samplerate: %d\n", sf_info.samplerate);
	printf("sections: %d\n", sf_info.sections);
	printf("seekable: %d\n", sf_info.seekable);

	SNDINFO sndInfo;
	sndInfo.sndfile = sndfile;
	sndInfo.sf_info = sf_info;

	int iProcess = paProcess(&sndInfo);

	int resultCode = 0;
	if (!(resultCode = sf_close(sndfile))) {
		printf("Close Successfully.\n");
	} else {
		sfErrorHandling(resultCode);
		return 1;
	}

	if (iProcess == 1) return 1;

	return 0 ;
}

int paProcess(SNDINFO *sndInfo) {

	printf("port audio initialize.\n");

	PaError paError = Pa_Initialize();

	if (checkPaError(paError)) return 1;

	PortAudioStream *portAudioStream;

	printf("port audio open default stream.\n");

	paError = Pa_OpenDefaultStream(&portAudioStream, 0, sndInfo->sf_info.channels, paFloat32, sndInfo->sf_info.samplerate, 256, 0, playCallback, sndInfo);

	if (checkPaError(paError)) return 1;

	printf("port audio start stream.\n");

	paError = Pa_StartStream(portAudioStream);

	if (checkPaError(paError)) return 1;

	printf("waiting for the wav file playing is finished.\n");
	while (Pa_StreamActive(portAudioStream)) {
	    Pa_Sleep(1000);
	}

	printf("port audio stop stream.\n");

	paError = Pa_StopStream(portAudioStream);

	if (checkPaError(paError)) return 1;

	printf("port audio close stream.\n");

	paError = Pa_CloseStream(portAudioStream);

	if (checkPaError(paError)) return 1;

	printf("port audio terminate.\n");

	paError = Pa_Terminate();

	if (checkPaError(paError)) return 1;

	printf("test play finished.\n");

	return 0;
}

int playCallback(void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, PaTimestamp outTime, void *userData) {

	SNDINFO *sndInfo = (SNDINFO *) userData;
	SNDFILE *sndFile = sndInfo->sndfile;
	SF_INFO sf_info = sndInfo->sf_info;

	float *out = (float *) outputBuffer;

	unsigned long readCount = sf_info.channels * framesPerBuffer;
	float ptr[readCount];
	sf_count_t count = sf_read_float(sndFile, ptr, readCount);

	unsigned long i = 0;
	for (; i < count; i++) {
		*out++ = ptr[i];
	}

	if (count < readCount) return 1;

	return 0;
}

int checkPaError(PaError paError) {
	if (paError != paNoError) {
		paErrorHandling(paError);
		return 1;
	}
	return 0;
}

void paErrorHandling(PaError paError) {
	printf("There is a error happens when invoking port audio api.");
	printf("Error Number: %d", paError);
	printf("Error Message: %s", Pa_GetErrorText(paError));
	Pa_Terminate();
}

void sfErrorHandling(int errorNumber) {
	printf("There is a error happens when invoking libsndfile api.");
	printf("Error Number: %d", errorNumber);
	printf("Error Message: %s", sf_error_number(errorNumber));
}