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85 lines
6.1 KiB
85 lines
6.1 KiB
3 years ago
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/* ======================================================================== */
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/* TEXAS INSTRUMENTS, INC. */
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/* */
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/* IMGLIB DSP Image/Video Processing Library */
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/* */
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/* Release: Revision 1.04b */
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/* CVS Revision: 1.3 Fri Oct 25 00:29:08 2002 (UTC) */
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/* Snapshot date: 23-Oct-2003 */
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/* */
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/* This library contains proprietary intellectual property of Texas */
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/* Instruments, Inc. The library and its source code are protected by */
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/* various copyrights, and portions may also be protected by patents or */
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/* other legal protections. */
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/* */
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/* This software is licensed for use with Texas Instruments TMS320 */
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/* family DSPs. This license was provided to you prior to installing */
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/* the software. You may review this license by consulting the file */
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/* TI_license.PDF which accompanies the files in this library. */
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/* ------------------------------------------------------------------------ */
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/* Copyright (C) 2003 Texas Instruments, Incorporated. */
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/* All Rights Reserved. */
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/* ======================================================================== */
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/* ======================================================================== */
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/* Assembler compatibility shim for assembling 4.30 and later code on */
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/* tools prior to 4.30. */
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/* ======================================================================== */
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/* ======================================================================== */
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/* End of assembler compatibility shim. */
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/* ======================================================================== */
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/* ======================================================================== */
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/* NAME */
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/* IMG_idct_8x8 -- Wrapper for idct_8x8_12q4, Little Endian. */
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/* */
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/* REVISION DATE */
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/* 24-Oct-2002 */
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/* */
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/* USAGE */
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/* This routine is C callable, and has the following C prototype: */
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/* */
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/* void IMG_idct_8x8(short idct_data[], unsigned num_idcts) */
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/* */
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/* DESCRIPTION */
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/* This function provides a wrapper around the IMG_idct_8x8_12q4 */
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/* function. It reads 12Q0 values in from the input array, and */
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/* writes them back as 12Q4. Once all the values have been adjusted, */
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/* the function then branches directly to IMG_idct_8x8_12q4. */
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/* */
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/* It is strongly recommended that you adapt your code to call */
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/* IMG_idct_8x8_12q4 directly. Calling this wrapper adds an extra */
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/* 16 cycles per block of processing overhead, as well as 116 */
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/* bytes of additional code. */
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/* */
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/* ASSUMPTIONS */
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/* This is a LITTLE ENDIAN implementation. */
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/* The input array must be aligned on a double-word boundary. */
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/* */
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/* MEMORY NOTE */
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/* No bank conflicts occur. */
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/* */
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/* NOTES */
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/* This code locks out interrupts for its entire duration. */
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/* It is, however, fully interrupt tolerant. */
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/* */
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/* CYCLES */
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/* cycles = 16 + 16 * num_idcts, for num_idcts > 0 */
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/* */
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/* CODESIZE */
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/* 116 bytes */
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/* ------------------------------------------------------------------------ */
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/* Copyright (c) 2003 Texas Instruments, Incorporated. */
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/* All Rights Reserved. */
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/* ======================================================================== */
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#ifndef IMG_IDCT_8X8_H_
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#define IMG_IDCT_8X8_H_ 1
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void IMG_idct_8x8(short idct_data[], unsigned num_idcts);
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#endif
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/* ======================================================================== */
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/* End of file: img_idct_8x8.h */
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/* ------------------------------------------------------------------------ */
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/* Copyright (c) 2003 Texas Instruments, Incorporated. */
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/* All Rights Reserved. */
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/* ======================================================================== */
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