dmDVAudioDecoderGetParams(3dm)dmDVAudioDecoderGetParams(3dm)NAMEdmDVAudioDecoderGetParams - get DV audio decoder parameter values
SYNOPSIS
#include <dmedia/dm_audioutil.h>
#include <dmedia/dm_audio.h>
#include <dmedia/dm_params.h>
DMstatus dmDVAudioDecoderGetParams(DMDVaudiodecoder handle,
DMparams *params)
PARAMETER
handle DMDVaudiodecoder structure, created by
dmDVAudioDecoderCreate(3dm).
params Parameters returned from the query.
RETURNED VALUE
Returns DM_SUCCESS or DM_FAILURE.
DESCRIPTIONdmDVAudioDecoderGetParams(3dm) gets state of DV audio decoder with
params.
The set of parameters of params returned by the query are defined in
dmedia/dm_audioutil.h and dmedia/dm_audio.h:
DM_DVAUDIO_FORMAT - either DM_DVAUDIO_NTSC or DM_DVAUDIO_PAL
DM_DVAUDIO_TYPE - either DM_DVAUDIO_DV or DM_DVAUDIO_DVCPRO
DM_AUDIO_CODEC_MAX_BYTES_PER_BLOCK - either 120000 for NTSC or 144000 for
PAL
DM_AUDIO_CHANNELS - number of channels of audio (1 or 2 or 4)
DM_AUDIO_WIDTH - will always be 16
DM_DVAUDIO_CHANNEL_MODE - either DM_DVAUDIO_SD_2CH or DM_DVAUDIO_SD_4CH
DM_DVAUDIO_CHANNEL_POLICY - integer 1-19, described in dm_audioutil.h,
which specify exactly how the audio is layed out inside the DIF frame.
DM_MEDIUM - will always be DM_AUDIO
DM_AUDIO_BYTE_ORDER - will always be DM_AUDIO_BIG_ENDIAN
DM_AUDIO_FORMAT - will always be DM_AUDIO_TWOS_COMPLEMENT
DM_AUDIO_RATE - the sample rate in floating point (ex: 48000.0)
DM_AUDIO_CODEC_FRAMES_PER_BLOCK - the maximum number of samples this DIF
frame could possibly contain
DM_DVAUDIO_MIN_FRAMES_PER_BLOCK - the miniumum number of frames this DIF
frame could possibly contain
DM_AUDIO_CODEC_FILTER_DELAY - always zero
DM_DVAUDIO_LOCK_MODE - non-zero if audio is locked according to the DV
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dmDVAudioDecoderGetParams(3dm)dmDVAudioDecoderGetParams(3dm)
audio specification. Zero if it is not locked.
SEE ALSOdmDVAudioDecoderCreate(3dm), dmDVAudioDecoderSetParams(3dm),
dmDVAudioDecode(3dm).
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