ref: 55308e39d51b50733f7429beb5c90d1526792c6b
dir: /ms.h/
/************************* MPEG-2 NBC Audio Decoder ************************** * * "This software module was originally developed in the course of development of the MPEG-2 NBC/MPEG-4 Audio standard ISO/IEC 13818-7, 14496-1,2 and 3. This software module is an implementation of a part of one or more MPEG-2 NBC/MPEG-4 Audio tools as specified by the MPEG-2 NBC/MPEG-4 Audio standard. ISO/IEC gives users of the MPEG-2 NBC/MPEG-4 Audio standards free license to this software module or modifications thereof for use in hardware or software products claiming conformance to the MPEG-2 NBC/MPEG-4 Audio standards. Those intending to use this software module in hardware or software products are advised that this use may infringe existing patents. The original developer of this software module and his/her company, the subsequent editors and their companies, and ISO/IEC have no liability for use of this software module or modifications thereof in an implementation. Copyright is not released for non MPEG-2 NBC/MPEG-4 Audio conforming products.The original developer retains full right to use the code for his/her own purpose, assign or donate the code to a third party and to inhibit third party from using the code for non MPEG-2 NBC/MPEG-4 Audio conforming products. This copyright notice must be included in all copies or derivative works." Copyright(c)1996. * * ****************************************************************************/ /******************************************************************************************* * * MS stereo coding module * * Authors: * CL Chuck Lueck, TI <lueck@ti.com> * * Changes: * 22-jan-98 CL Initial revision. Lacks psychoacoustics for MS stereo. ***************************************************************************************/ #ifndef MS_ENC #define MS_ENC #include "all.h" #include "tf_main.h" #include "aac_qc.h" void MSPreprocess(double p_ratio_long[][MAX_SCFAC_BANDS], double p_ratio_short[][MAX_SCFAC_BANDS], CH_PSYCH_OUTPUT_LONG p_chpo_long[], CH_PSYCH_OUTPUT_SHORT p_chpo_short[][MAX_SHORT_WINDOWS], Ch_Info *channelInfo, /* Pointer to Ch_Info */ enum WINDOW_TYPE block_type[MAX_TIME_CHANNELS], /* Block type */ AACQuantInfo* quantInfo, /* Quant info */ int use_ms, int numberOfChannels ); void MSEnergy(double *spectral_line_vector[MAX_TIME_CHANNELS], double energy[MAX_TIME_CHANNELS][MAX_SCFAC_BANDS], CH_PSYCH_OUTPUT_LONG p_chpo_long[], CH_PSYCH_OUTPUT_SHORT p_chpo_short[][MAX_SHORT_WINDOWS], int sfb_width_table[MAX_TIME_CHANNELS][MAX_SCFAC_BANDS], Ch_Info *channelInfo, /* Pointer to Ch_Info */ enum WINDOW_TYPE block_type[MAX_TIME_CHANNELS], /* Block type */ AACQuantInfo* quantInfo, /* Quant info */ int use_ms, int numberOfChannels ); void MSEncodeSwitch(double *spectrum[MAX_TIME_CHANNELS], /* array of pointers to spectral data */ Ch_Info *channelInfo, /* Pointer to Ch_Info */ int sfb_offset_table[][MAX_SCFAC_BANDS+1], enum WINDOW_TYPE block_type[MAX_TIME_CHANNELS], /* Block type */ AACQuantInfo* quantInfo, int numberOfChannels); /* Number of channels */ void MSEncode(double *spectrum[MAX_TIME_CHANNELS], /* array of pointers to spectral data */ Ch_Info *channelInfo, /* Pointer to Ch_Info */ int sfb_offset_table[][MAX_SCFAC_BANDS+1], enum WINDOW_TYPE block_type[MAX_TIME_CHANNELS], /* Block type */ AACQuantInfo* quantInfo, int numberOfChannels); /* Number of channels */ void MSReconstruct(double *spectrum[MAX_TIME_CHANNELS], /* array of pointers to spectral data */ Ch_Info *channelInfo, /* Pointer to Ch_Info */ int sfb_offset_table[][MAX_SCFAC_BANDS+1], enum WINDOW_TYPE block_type[MAX_TIME_CHANNELS], /* Block type */ AACQuantInfo* quantInfo, /* Quant info */ int numberOfChannels); /* Number of channels */ #endif