summaryrefslogtreecommitdiffhomepage
path: root/Stars45/MCIWave.cpp
blob: cf92c2f5c17b76c889354f73e33e063fce075687 (plain)
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
/*  Starshatter: The Open Source Project
    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
    Copyright (c) 1997-2006, Destroyer Studios LLC.

    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    MCI Wave Output stuff
*/

#include "MemDebug.h"
#include "Types.h"
#include "Game.h"
#include "Utils.h"

// +----------------------------------------------------------------------+

const int MCI_MAX_STR = 128;
static char       ret_str[MCI_MAX_STR];
static char       err_str[MCI_MAX_STR];
static MCIERROR   mci_err;
static MMRESULT   wav_err;

static int mci_send_string(const char* cmd_str)
{
    mci_err = mciSendString(cmd_str, ret_str, sizeof(ret_str), Game::GetInstance()->GetHWND());
    if (mci_err) {
        if (mciGetErrorString(mci_err, err_str, sizeof(err_str)))
        Print("Error (%s): '%s'\n", cmd_str, err_str);
        else
        Print("Error (%s): %d - UNKNOWN\n", cmd_str, mci_err);
        return 0;
    }

    return 1;
}

// +--------------------------------------------------------------------+

static void print_wav_error()
{
    waveOutGetErrorText(wav_err, err_str, MCI_MAX_STR);
    Print(err_str);
}

// +--------------------------------------------------------------------+

int load_wave_file(const char* fname, LPWAVEHDR hdr, LPWAVEFORMATEX format)
{
    HMMIO       hmmio;            /* file handle for open file */
    MMCKINFO    mmckinfoParent;   /* parent chunk information structure */
    MMCKINFO    mmckinfoSubchunk; /* subchunk information structure    */
    DWORD       dwFmtSize;        /* size of "fmt" chunk               */
    DWORD       dwDataSize;       /* size of "data" chunk              */

    /*
    * Open the given file for reading with buffered I/O
    * using the default internal buffer.
    */
    hmmio = mmioOpen((LPSTR) fname, NULL, MMIO_READ | MMIO_ALLOCBUF);

    if (hmmio == NULL) {
        Print("load_wave_file(): '%s' - Failed to open file.\n", fname);
        return 0;
    }

    /*
    * Locate a "RIFF" chunk with a "WAVE" form type
    * to make sure the file is a WAVE file.
    */
    mmckinfoParent.fccType = mmioFOURCC('W', 'A', 'V', 'E');
    if (mmioDescend(hmmio, (LPMMCKINFO) &mmckinfoParent, NULL, MMIO_FINDRIFF)) {
        Print("load_wave_file(): '%s' - This is not a WAVE file.\n", fname);
        mmioClose(hmmio, 0);
        return 0;
    }

    /*
    * Find the "fmt " chunk (form type "fmt "); it must be
    * a subchunk of the "RIFF" parent chunk.
    */
    mmckinfoSubchunk.ckid = mmioFOURCC('f', 'm', 't', ' ');
    if (mmioDescend(hmmio, &mmckinfoSubchunk, &mmckinfoParent, MMIO_FINDCHUNK)) {
        Print("load_wave_file(): '%s' - WAVE file has no \"fmt\" chunk\n", fname);
        mmioClose(hmmio, 0);
        return 0;
    }

    /*
    * Get the size of the "fmt " chunk--allocate and lock memory for it.
    */
    dwFmtSize = mmckinfoSubchunk.cksize;

    /* Read the "fmt " chunk. */
    if (mmioRead(hmmio, (HPSTR) format, dwFmtSize) != (LRESULT)dwFmtSize) {
        Print("load_wave_file(): '%s' - Failed to read format chunk.\n", fname);
        mmioClose(hmmio, 0);
        return 0;
    }

    /* Ascend out of the "fmt " subchunk. */
    mmioAscend(hmmio, &mmckinfoSubchunk, 0);

    /*
    * Find the data subchunk. The current file position
    * should be at the beginning of the data chunk.
    */
    mmckinfoSubchunk.ckid = mmioFOURCC('d', 'a', 't', 'a');
    if (mmioDescend(hmmio, &mmckinfoSubchunk, &mmckinfoParent, MMIO_FINDCHUNK)) {
        Print("load_wave_file(): '%s' - WAVE file has no data chunk.\n", fname);
        mmioClose(hmmio, 0);
        return 0;
    }

    /* Get the size of the data subchunk. */
    dwDataSize = mmckinfoSubchunk.cksize;
    if (dwDataSize == 0L) {
        Print("load_wave_file(): '%s' - The data chunk contains no data.\n", fname);
        mmioClose(hmmio, 0);
        return 0;
    }

    // allocate the data block:
    hdr->lpData = (LPSTR) new(__FILE__,__LINE__) BYTE[dwDataSize];
    hdr->dwBufferLength = dwDataSize;

    /* Read the waveform data subchunk. */
    if (mmioRead(hmmio, (HPSTR) hdr->lpData, dwDataSize) != (LRESULT)dwDataSize) {
        Print("load_wave_file(): '%s' - Failed to read data chunk.\n", fname);
        mmioClose(hmmio, 0);
        return 0;
    }

    /* Close the file. */
    mmioClose(hmmio, 0);

    return 1;
}

// +--------------------------------------------------------------------+

void delete_wave_file(LPWAVEHDR hdr, LPWAVEFORMATEX format)
{
    if (hdr) {
        delete hdr->lpData;
        hdr->lpData = 0;
    }
}