diff options
Diffstat (limited to 'nGenEx/MCIWave.cpp')
| -rw-r--r-- | nGenEx/MCIWave.cpp | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/nGenEx/MCIWave.cpp b/nGenEx/MCIWave.cpp new file mode 100644 index 0000000..fdab8cd --- /dev/null +++ b/nGenEx/MCIWave.cpp @@ -0,0 +1,155 @@ +/* Project nGenEx
+ Destroyer Studios LLC
+ Copyright © 1997-2004. All Rights Reserved.
+
+ SUBSYSTEM: nGenEx.lib
+ FILE: MCIWave.cpp
+ AUTHOR: John DiCamillo
+
+
+ OVERVIEW
+ ========
+ MCI Wave Output stuff
+*/
+
+#include "MemDebug.h"
+#include "Types.h"
+
+// +----------------------------------------------------------------------+
+
+void Print(const char* fmt, ...);
+
+// +----------------------------------------------------------------------+
+
+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;
+extern HWND hwndApp;
+
+static int mci_send_string(const char* cmd_str)
+{
+ mci_err = mciSendString(cmd_str, ret_str, sizeof(ret_str), hwndApp);
+ 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;
+ }
+}
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