diff options
Diffstat (limited to 'arm-fm-22k/lib_src/eas_pcmdata.h')
| -rw-r--r-- | arm-fm-22k/lib_src/eas_pcmdata.h | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/arm-fm-22k/lib_src/eas_pcmdata.h b/arm-fm-22k/lib_src/eas_pcmdata.h deleted file mode 100644 index be2f8e5..0000000 --- a/arm-fm-22k/lib_src/eas_pcmdata.h +++ /dev/null @@ -1,157 +0,0 @@ -/*----------------------------------------------------------------------------
- *
- * File:
- * eas_pcmdata.h
- *
- * Contents and purpose:
- * Data declarations for the PCM engine
- *
- *
- * Copyright Sonic Network Inc. 2005
- - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - *
- *----------------------------------------------------------------------------
- * Revision Control:
- * $Revision: 847 $
- * $Date: 2007-08-27 21:30:08 -0700 (Mon, 27 Aug 2007) $
- *----------------------------------------------------------------------------
-*/
-
-#ifndef _EAS_PCMDATA_H
-#define _EAS_PCMDATA_H
-
-/* sets the maximum number of simultaneous PCM streams */
-#ifndef MAX_PCM_STREAMS
-#define MAX_PCM_STREAMS 16
-#define PCM_STREAM_THRESHOLD (MAX_PCM_STREAMS - 4)
-#endif
-
-/* coefficents for high-pass filter in ADPCM */
-#define INTEGRATOR_COEFFICIENT 100 /* coefficient for leaky integrator */
-
-/* additional flags in S_PCM_STATE.flags used internal to module */
-#define PCM_FLAGS_EMPTY 0x01000000 /* unsigned format */
-
-/*----------------------------------------------------------------------------
- * S_PCM_STATE
- *
- * Retains state information for PCM streams.
- *----------------------------------------------------------------------------
-*/
-typedef struct s_decoder_state_tag
-{
- EAS_I32 output; /* last output for DC offset filter */
- EAS_I32 acc; /* accumulator for DC offset filter */
- EAS_I32 step; /* current ADPCM step size */
- EAS_PCM x1; /* current generated sample */
- EAS_PCM x0; /* previous generated sample */
-} S_DECODER_STATE;
-
-typedef enum
-{
- PCM_ENV_START = 0,
- PCM_ENV_ATTACK,
- PCM_ENV_DECAY,
- PCM_ENV_SUSTAIN,
- PCM_ENV_RELEASE,
- PCM_ENV_END
-} E_PCM_ENV_STATE;
-
-typedef struct s_pcm_state_tag
-{
-#ifdef _CHECKED_BUILD
- EAS_U32 handleCheck; /* signature check for checked build */
-#endif
- EAS_FILE_HANDLE fileHandle; /* pointer to input file */
- EAS_PCM_CALLBACK pCallback; /* pointer to callback function */
- EAS_VOID_PTR cbInstData; /* instance data for callback function */
- struct s_decoder_interface_tag EAS_CONST * pDecoder; /* pointer to decoder interface */
- EAS_STATE state; /* stream state */
- EAS_I32 time; /* media time */
- EAS_I32 startPos; /* start of PCM stream */
- EAS_I32 loopLocation; /* file location where loop starts */
- EAS_I32 byteCount; /* size of file */
- EAS_U32 loopStart; /* loop start, offset in samples from startPos */
- /* NOTE: For CMF, we use this to store total sample size */
- EAS_U32 loopSamples; /* total loop length, in samples, 0 means no loop */
- /* NOTE: For CMF, non-zero means looped */
- EAS_U32 samplesInLoop; /* samples left in the loop to play back */
- EAS_I32 samplesTilLoop; /* samples left to play until top of loop */
- EAS_I32 bytesLeft; /* count of bytes left in stream */
- EAS_I32 bytesLeftLoop; /* count of bytes left in stream, value at start of loop */
- EAS_U32 phase; /* current phase for interpolator */
- EAS_U32 basefreq; /* frequency multiplier */
- EAS_U32 flags; /* stream flags */
- EAS_U32 envData; /* envelope data (and LFO data) */
- EAS_U32 envValue; /* current envelope value */
- EAS_U32 envScale; /* current envelope scale */
- EAS_U32 startOrder; /* start order index, first is 0, next is 1, etc. */
- S_DECODER_STATE decoderL; /* left (mono) ADPCM state */
- S_DECODER_STATE decoderR; /* right ADPCM state */
- S_DECODER_STATE decoderLLoop; /* left (mono) ADPCM state, value at start of loop */
- S_DECODER_STATE decoderRLoop; /* right ADPCM state, value at start of loop */
- E_PCM_ENV_STATE envState; /* current envelope state */
- EAS_I16 volume; /* volume for stream */
- EAS_I16 pitch; /* relative pitch in cents - zero is unity playback */
- EAS_I16 gainLeft; /* requested gain */
- EAS_I16 gainRight; /* requested gain */
- EAS_I16 currentGainLeft; /* current gain for anti-zipper filter */
- EAS_I16 currentGainRight; /* current gain for anti-zipper filter */
- EAS_U16 blockSize; /* block size for ADPCM decoder */
- EAS_U16 blockCount; /* block counter for ADPCM decoder */
- EAS_U16 sampleRate; /* input sample rate */
- EAS_U8 srcByte; /* source byte */
- EAS_U8 msBitCount; /* count keeps track of MS bits */
- EAS_U8 msBitMask; /* mask keeps track of MS bits */
- EAS_U8 msBitValue; /* value keeps track of MS bits */
- EAS_U8 msBitCountLoop; /* count keeps track of MS bits, value at loop start */
- EAS_U8 msBitMaskLoop; /* mask keeps track of MS bits, value at loop start */
- EAS_U8 msBitValueLoop; /* value keeps track of MS bits, value at loop start */
- EAS_BOOL8 hiNibble; /* indicates high/low nibble is next */
- EAS_BOOL8 hiNibbleLoop; /* indicates high/low nibble is next, value loop start */
- EAS_U8 rateShift; /* for playback rate greater than 1.0 */
-} S_PCM_STATE;
-
-/*----------------------------------------------------------------------------
- * S_DECODER_INTERFACE
- *
- * Generic interface for audio decoders
- *----------------------------------------------------------------------------
-*/
-typedef struct s_decoder_interface_tag
-{
- EAS_RESULT (* EAS_CONST pfInit)(EAS_DATA_HANDLE pEASData, S_PCM_STATE *pState);
- EAS_RESULT (* EAS_CONST pfDecodeSample)(EAS_DATA_HANDLE pEASData, S_PCM_STATE *pState);
- EAS_RESULT (* EAS_CONST pfLocate)(EAS_DATA_HANDLE pEASData, S_PCM_STATE *pState, EAS_I32 time);
-} S_DECODER_INTERFACE;
-
-
-/* header chunk for SMAF ADPCM */
-#define TAG_YAMAHA_ADPCM 0x4d776100
-#define TAG_MASK 0xffffff00
-#define TAG_RIFF_FILE 0x52494646
-#define TAG_WAVE_CHUNK 0x57415645
-#define TAG_FMT_CHUNK 0x666d7420
-
-/*----------------------------------------------------------------------------
- * EAS_PESeek
- *----------------------------------------------------------------------------
- * Purpose:
- * Locate to a particular byte in a PCM stream
- *----------------------------------------------------------------------------
-*/
-EAS_RESULT EAS_PESeek (EAS_DATA_HANDLE pEASData, S_PCM_STATE *pState, EAS_I32 *pLocation);
-
-#endif /* _EAS_PCMDATA_H */
-
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