64 lines
2.3 KiB
C
64 lines
2.3 KiB
C
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#pragma once
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#include "mp4FastAAClib.h"
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#include <windows.h> // or MAX_PATH
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#define ENCODER_TYPE_MPEG4 (mmioFOURCC('A','A','C','f'))
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#define ENCODER_TYPE_ADTS (mmioFOURCC('A','D','T','S'))
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enum
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{
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AAC_MODE_VBR=0,
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AAC_MODE_CBR=1,
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/* these are the profile options when CBR is selected */
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AAC_PROFILE_AUTOMATIC=0,
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AAC_PROFILE_LC=1,
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AAC_PROFILE_HE=2,
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AAC_PROFILE_HE_V2=3,
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/* Surround options */
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AAC_SURROUND_BCC = 0, /* Binaural Cue Coding, stereo + surround layer, aka MPEG-Surround */
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AAC_SURROUND_DISCRETE = 1, /* Discrete surround (traditional AAC surround sound with separate SCE per channel pair) */
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/* defaults */
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AAC_DEFAULT_MODE = AAC_MODE_VBR,
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AAC_DEFAULT_PROFILE = AAC_PROFILE_AUTOMATIC,
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AAC_DEFAULT_BITRATE = 128,
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AAC_DEFAULT_PRESET = 4,
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AAC_DEFAULT_SURROUND = AAC_SURROUND_BCC,
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};
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struct AACConfiguration
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{
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unsigned int mode; /* CBR or VBR */
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unsigned int profile; /* what flavor of AAC, e.g. LC, or automatic */
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unsigned int bitrate; /* bitrate for CBR */
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unsigned int preset; /* preset for VBR */
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unsigned int surround; /* 0 = discrete, 1 = MPEG Surround */
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};
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struct AACConfigurationFile
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{
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AACConfiguration config;
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unsigned int channels;
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unsigned int sample_rate;
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unsigned int type; /* either ENCODER_TYPE_MPEG4 or ENCODER_TYPE_ADTS */
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unsigned int shoutcast; /* 0 by default, 1 if we're being invoked from dsp_sc */
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bool changing; /* used internally by preferences */
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char config_file[MAX_PATH];
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};
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AACConfigurationFile *AACConfig_Create(unsigned int type, const char *filename); /* de-allocate with free() */
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void AACConfig_Load(AACConfigurationFile *cfg);
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void AACConfig_Save(const AACConfigurationFile *cfg);
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/* bitrates are in bits/sec (not kbps), divide by 1000 if you need to
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TODO: ASSUMES 44.1kHz Stereo. We need to make the encoder API accept samplerate/channels input better!
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*/
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void AACConfig_GetBitrateRange(const AACConfiguration *cfg, int *low, int *high);
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AUD_OBJ_TYP AACConfig_GetAOT(const AACConfiguration *cfg);
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int AACConfig_GetBitrate(const AACConfiguration *cfg, unsigned int channels);
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MPEG4ENC_BITRATE_MODE AACConfig_GetBitrateMode(const AACConfiguration *cfg);
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MPEG4ENC_CH_MODE AACConfig_GetChannelMode(const AACConfiguration *cfg, unsigned int channels);
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void AACConfig_GetToolString(const MPEG4ENC_SETUP *setup, char tool[], size_t cch);
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