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Diffstat (limited to 'utility/wav.c')
| -rw-r--r-- | utility/wav.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/utility/wav.c b/utility/wav.c new file mode 100644 index 0000000..62c7960 --- /dev/null +++ b/utility/wav.c @@ -0,0 +1,84 @@ +/* ----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+// Headers
+//------------------------------------------------------------------------------
+
+#include "wav.h"
+#include <utility/trace.h>
+
+//------------------------------------------------------------------------------
+// Internal constants
+//------------------------------------------------------------------------------
+
+/// WAV letters "RIFF"
+#define WAV_CHUNKID 0x46464952
+/// WAV letters "WAVE"
+#define WAV_FORMAT 0x45564157
+/// WAV letters "fmt "
+#define WAV_SUBCHUNKID 0x20746D66
+
+//------------------------------------------------------------------------------
+// Exported functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// Returns 1 if the header of a Wav file is valid; otherwise returns 0.
+/// \param file Buffer holding the file to examinate.
+//------------------------------------------------------------------------------
+unsigned char WAV_IsValid(const WavHeader *header)
+{
+ return ((header->chunkID == WAV_CHUNKID)
+ && (header->format == WAV_FORMAT)
+ && (header->subchunk1Size == 0x10));
+}
+
+//------------------------------------------------------------------------------
+/// Display the information of the WAV file (sample rate, stereo/mono and frame
+/// size).
+//------------------------------------------------------------------------------
+void WAV_DisplayInfo(const WavHeader *header)
+{
+ TRACE_PERM_WP( "Wave file header information\n\r");
+ TRACE_PERM_WP( "--------------------------------\n\r");
+ TRACE_PERM_WP( " - Chunk ID = 0x%08X\n\r", header->chunkID);
+ TRACE_PERM_WP( " - Chunk Size = %d\n\r", header->chunkSize);
+ TRACE_PERM_WP( " - Format = 0x%08X\n\r", header->format);
+ TRACE_PERM_WP( " - SubChunk ID = 0x%08X\n\r", header->subchunk1ID);
+ TRACE_PERM_WP( " - Subchunk1 Size = %d\n\r", header->subchunk1Size);
+ TRACE_PERM_WP( " - Audio Format = 0x%04X\n\r", header->audioFormat);
+ TRACE_PERM_WP( " - Num. Channels = %d\n\r", header->numChannels);
+ TRACE_PERM_WP( " - Sample Rate = %d\n\r", header->sampleRate);
+ TRACE_PERM_WP( " - Byte Rate = %d\n\r", header->byteRate);
+ TRACE_PERM_WP( " - Block Align = %d\n\r", header->blockAlign);
+ TRACE_PERM_WP( " - Bits Per Sample = %d\n\r", header->bitsPerSample);
+ TRACE_PERM_WP( " - Subchunk2 ID = 0x%08X\n\r", header->subchunk2ID);
+ TRACE_PERM_WP( " - Subchunk2 Size = %d\n\r", header->subchunk2Size);
+}
\ No newline at end of file |