Update avcodec to 20080825
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27551 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
David McPaul
@@ -1,9 +1,42 @@
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/*
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/*
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* jfdctfst.c
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* jfdctfst.c
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*
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*
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* Copyright (C) 1994-1996, Thomas G. Lane.
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* This file is part of the Independent JPEG Group's software.
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* This file is part of the Independent JPEG Group's software.
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||||||
* For conditions of distribution and use, see the accompanying README file.
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*
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||||||
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* The authors make NO WARRANTY or representation, either express or implied,
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||||||
|
* with respect to this software, its quality, accuracy, merchantability, or
|
||||||
|
* fitness for a particular purpose. This software is provided "AS IS", and
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||||||
|
* you, its user, assume the entire risk as to its quality and accuracy.
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||||||
|
*
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||||||
|
* This software is copyright (C) 1994-1996, Thomas G. Lane.
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||||||
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* All Rights Reserved except as specified below.
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||||||
|
*
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||||||
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* Permission is hereby granted to use, copy, modify, and distribute this
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||||||
|
* software (or portions thereof) for any purpose, without fee, subject to
|
||||||
|
* these conditions:
|
||||||
|
* (1) If any part of the source code for this software is distributed, then
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||||||
|
* this README file must be included, with this copyright and no-warranty
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||||||
|
* notice unaltered; and any additions, deletions, or changes to the original
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||||||
|
* files must be clearly indicated in accompanying documentation.
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||||||
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* (2) If only executable code is distributed, then the accompanying
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||||||
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* documentation must state that "this software is based in part on the work
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||||||
|
* of the Independent JPEG Group".
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||||||
|
* (3) Permission for use of this software is granted only if the user accepts
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||||||
|
* full responsibility for any undesirable consequences; the authors accept
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||||||
|
* NO LIABILITY for damages of any kind.
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||||||
|
*
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||||||
|
* These conditions apply to any software derived from or based on the IJG
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||||||
|
* code, not just to the unmodified library. If you use our work, you ought
|
||||||
|
* to acknowledge us.
|
||||||
|
*
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||||||
|
* Permission is NOT granted for the use of any IJG author's name or company
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||||||
|
* name in advertising or publicity relating to this software or products
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||||||
|
* derived from it. This software may be referred to only as "the Independent
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||||||
|
* JPEG Group's software".
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||||||
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*
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* We specifically permit and encourage the use of this software as the basis
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||||||
|
* of commercial products, provided that all warranty or liability claims are
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||||||
|
* assumed by the product vendor.
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||||||
*
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*
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* This file contains a fast, not so accurate integer implementation of the
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* This file contains a fast, not so accurate integer implementation of the
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* forward DCT (Discrete Cosine Transform).
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* forward DCT (Discrete Cosine Transform).
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@@ -34,7 +67,7 @@
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* @file jfdctfst.c
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* @file jfdctfst.c
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* Independent JPEG Group's fast AAN dct.
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* Independent JPEG Group's fast AAN dct.
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*/
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*/
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#include <stdlib.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdio.h>
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#include "common.h"
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#include "common.h"
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@@ -83,10 +116,10 @@
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*/
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*/
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#if CONST_BITS == 8
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#if CONST_BITS == 8
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#define FIX_0_382683433 ((int32_t) 98) /* FIX(0.382683433) */
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#define FIX_0_382683433 ((int32_t) 98) /* FIX(0.382683433) */
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#define FIX_0_541196100 ((int32_t) 139) /* FIX(0.541196100) */
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#define FIX_0_541196100 ((int32_t) 139) /* FIX(0.541196100) */
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#define FIX_0_707106781 ((int32_t) 181) /* FIX(0.707106781) */
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#define FIX_0_707106781 ((int32_t) 181) /* FIX(0.707106781) */
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#define FIX_1_306562965 ((int32_t) 334) /* FIX(1.306562965) */
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#define FIX_1_306562965 ((int32_t) 334) /* FIX(1.306562965) */
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#else
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#else
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#define FIX_0_382683433 FIX(0.382683433)
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#define FIX_0_382683433 FIX(0.382683433)
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#define FIX_0_541196100 FIX(0.541196100)
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#define FIX_0_541196100 FIX(0.541196100)
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@@ -112,7 +145,7 @@
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#define MULTIPLY(var,const) ((DCTELEM) DESCALE((var) * (const), CONST_BITS))
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#define MULTIPLY(var,const) ((DCTELEM) DESCALE((var) * (const), CONST_BITS))
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static always_inline void row_fdct(DCTELEM * data){
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static av_always_inline void row_fdct(DCTELEM * data){
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int_fast16_t tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
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int_fast16_t tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
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int_fast16_t tmp10, tmp11, tmp12, tmp13;
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int_fast16_t tmp10, tmp11, tmp12, tmp13;
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int_fast16_t z1, z2, z3, z4, z5, z11, z13;
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int_fast16_t z1, z2, z3, z4, z5, z11, z13;
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@@ -132,42 +165,42 @@ static always_inline void row_fdct(DCTELEM * data){
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tmp5 = dataptr[2] - dataptr[5];
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tmp5 = dataptr[2] - dataptr[5];
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tmp3 = dataptr[3] + dataptr[4];
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tmp3 = dataptr[3] + dataptr[4];
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tmp4 = dataptr[3] - dataptr[4];
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tmp4 = dataptr[3] - dataptr[4];
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/* Even part */
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/* Even part */
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tmp10 = tmp0 + tmp3; /* phase 2 */
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tmp10 = tmp0 + tmp3; /* phase 2 */
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tmp13 = tmp0 - tmp3;
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tmp13 = tmp0 - tmp3;
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tmp11 = tmp1 + tmp2;
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tmp11 = tmp1 + tmp2;
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tmp12 = tmp1 - tmp2;
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tmp12 = tmp1 - tmp2;
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dataptr[0] = tmp10 + tmp11; /* phase 3 */
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dataptr[0] = tmp10 + tmp11; /* phase 3 */
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dataptr[4] = tmp10 - tmp11;
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dataptr[4] = tmp10 - tmp11;
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z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781); /* c4 */
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z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781); /* c4 */
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dataptr[2] = tmp13 + z1; /* phase 5 */
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dataptr[2] = tmp13 + z1; /* phase 5 */
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dataptr[6] = tmp13 - z1;
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dataptr[6] = tmp13 - z1;
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/* Odd part */
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/* Odd part */
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tmp10 = tmp4 + tmp5; /* phase 2 */
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tmp10 = tmp4 + tmp5; /* phase 2 */
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tmp11 = tmp5 + tmp6;
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tmp11 = tmp5 + tmp6;
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tmp12 = tmp6 + tmp7;
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tmp12 = tmp6 + tmp7;
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/* The rotator is modified from fig 4-8 to avoid extra negations. */
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/* The rotator is modified from fig 4-8 to avoid extra negations. */
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z5 = MULTIPLY(tmp10 - tmp12, FIX_0_382683433); /* c6 */
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z5 = MULTIPLY(tmp10 - tmp12, FIX_0_382683433); /* c6 */
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z2 = MULTIPLY(tmp10, FIX_0_541196100) + z5; /* c2-c6 */
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z2 = MULTIPLY(tmp10, FIX_0_541196100) + z5; /* c2-c6 */
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z4 = MULTIPLY(tmp12, FIX_1_306562965) + z5; /* c2+c6 */
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z4 = MULTIPLY(tmp12, FIX_1_306562965) + z5; /* c2+c6 */
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z3 = MULTIPLY(tmp11, FIX_0_707106781); /* c4 */
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z3 = MULTIPLY(tmp11, FIX_0_707106781); /* c4 */
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z11 = tmp7 + z3; /* phase 5 */
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z11 = tmp7 + z3; /* phase 5 */
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z13 = tmp7 - z3;
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z13 = tmp7 - z3;
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dataptr[5] = z13 + z2; /* phase 6 */
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dataptr[5] = z13 + z2; /* phase 6 */
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dataptr[3] = z13 - z2;
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dataptr[3] = z13 - z2;
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dataptr[1] = z11 + z4;
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dataptr[1] = z11 + z4;
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dataptr[7] = z11 - z4;
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dataptr[7] = z11 - z4;
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dataptr += DCTSIZE; /* advance pointer to next row */
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dataptr += DCTSIZE; /* advance pointer to next row */
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}
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}
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}
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}
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@@ -186,7 +219,7 @@ fdct_ifast (DCTELEM * data)
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SHIFT_TEMPS
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SHIFT_TEMPS
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row_fdct(data);
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row_fdct(data);
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/* Pass 2: process columns. */
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/* Pass 2: process columns. */
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dataptr = data;
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dataptr = data;
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@@ -199,24 +232,24 @@ fdct_ifast (DCTELEM * data)
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tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5];
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tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5];
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tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4];
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tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4];
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tmp4 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4];
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tmp4 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4];
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/* Even part */
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/* Even part */
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tmp10 = tmp0 + tmp3; /* phase 2 */
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tmp10 = tmp0 + tmp3; /* phase 2 */
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tmp13 = tmp0 - tmp3;
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tmp13 = tmp0 - tmp3;
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tmp11 = tmp1 + tmp2;
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tmp11 = tmp1 + tmp2;
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tmp12 = tmp1 - tmp2;
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tmp12 = tmp1 - tmp2;
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dataptr[DCTSIZE*0] = tmp10 + tmp11; /* phase 3 */
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dataptr[DCTSIZE*0] = tmp10 + tmp11; /* phase 3 */
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dataptr[DCTSIZE*4] = tmp10 - tmp11;
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dataptr[DCTSIZE*4] = tmp10 - tmp11;
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z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781); /* c4 */
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z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781); /* c4 */
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dataptr[DCTSIZE*2] = tmp13 + z1; /* phase 5 */
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dataptr[DCTSIZE*2] = tmp13 + z1; /* phase 5 */
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dataptr[DCTSIZE*6] = tmp13 - z1;
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dataptr[DCTSIZE*6] = tmp13 - z1;
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/* Odd part */
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/* Odd part */
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tmp10 = tmp4 + tmp5; /* phase 2 */
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tmp10 = tmp4 + tmp5; /* phase 2 */
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tmp11 = tmp5 + tmp6;
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tmp11 = tmp5 + tmp6;
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tmp12 = tmp6 + tmp7;
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tmp12 = tmp6 + tmp7;
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@@ -226,7 +259,7 @@ fdct_ifast (DCTELEM * data)
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z4 = MULTIPLY(tmp12, FIX_1_306562965) + z5; /* c2+c6 */
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z4 = MULTIPLY(tmp12, FIX_1_306562965) + z5; /* c2+c6 */
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z3 = MULTIPLY(tmp11, FIX_0_707106781); /* c4 */
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z3 = MULTIPLY(tmp11, FIX_0_707106781); /* c4 */
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z11 = tmp7 + z3; /* phase 5 */
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z11 = tmp7 + z3; /* phase 5 */
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z13 = tmp7 - z3;
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z13 = tmp7 - z3;
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dataptr[DCTSIZE*5] = z13 + z2; /* phase 6 */
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dataptr[DCTSIZE*5] = z13 + z2; /* phase 6 */
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@@ -234,7 +267,7 @@ fdct_ifast (DCTELEM * data)
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dataptr[DCTSIZE*1] = z11 + z4;
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dataptr[DCTSIZE*1] = z11 + z4;
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dataptr[DCTSIZE*7] = z11 - z4;
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dataptr[DCTSIZE*7] = z11 - z4;
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dataptr++; /* advance pointer to next column */
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dataptr++; /* advance pointer to next column */
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}
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}
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}
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}
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@@ -253,7 +286,7 @@ fdct_ifast248 (DCTELEM * data)
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SHIFT_TEMPS
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SHIFT_TEMPS
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row_fdct(data);
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row_fdct(data);
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/* Pass 2: process columns. */
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/* Pass 2: process columns. */
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dataptr = data;
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dataptr = data;
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@@ -268,15 +301,15 @@ fdct_ifast248 (DCTELEM * data)
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tmp7 = dataptr[DCTSIZE*6] - dataptr[DCTSIZE*7];
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tmp7 = dataptr[DCTSIZE*6] - dataptr[DCTSIZE*7];
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/* Even part */
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/* Even part */
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tmp10 = tmp0 + tmp3;
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tmp10 = tmp0 + tmp3;
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tmp11 = tmp1 + tmp2;
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tmp11 = tmp1 + tmp2;
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tmp12 = tmp1 - tmp2;
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tmp12 = tmp1 - tmp2;
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tmp13 = tmp0 - tmp3;
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tmp13 = tmp0 - tmp3;
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dataptr[DCTSIZE*0] = tmp10 + tmp11;
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dataptr[DCTSIZE*0] = tmp10 + tmp11;
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dataptr[DCTSIZE*4] = tmp10 - tmp11;
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dataptr[DCTSIZE*4] = tmp10 - tmp11;
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z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781);
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z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781);
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dataptr[DCTSIZE*2] = tmp13 + z1;
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dataptr[DCTSIZE*2] = tmp13 + z1;
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dataptr[DCTSIZE*6] = tmp13 - z1;
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dataptr[DCTSIZE*6] = tmp13 - z1;
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@@ -285,15 +318,15 @@ fdct_ifast248 (DCTELEM * data)
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tmp11 = tmp5 + tmp6;
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tmp11 = tmp5 + tmp6;
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tmp12 = tmp5 - tmp6;
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tmp12 = tmp5 - tmp6;
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tmp13 = tmp4 - tmp7;
|
tmp13 = tmp4 - tmp7;
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|
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dataptr[DCTSIZE*1] = tmp10 + tmp11;
|
dataptr[DCTSIZE*1] = tmp10 + tmp11;
|
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dataptr[DCTSIZE*5] = tmp10 - tmp11;
|
dataptr[DCTSIZE*5] = tmp10 - tmp11;
|
||||||
|
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||||||
z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781);
|
z1 = MULTIPLY(tmp12 + tmp13, FIX_0_707106781);
|
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dataptr[DCTSIZE*3] = tmp13 + z1;
|
dataptr[DCTSIZE*3] = tmp13 + z1;
|
||||||
dataptr[DCTSIZE*7] = tmp13 - z1;
|
dataptr[DCTSIZE*7] = tmp13 - z1;
|
||||||
|
|
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dataptr++; /* advance pointer to next column */
|
dataptr++; /* advance pointer to next column */
|
||||||
}
|
}
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||||||
}
|
}
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|||||||
@@ -1,9 +1,42 @@
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/*
|
/*
|
||||||
* jfdctint.c
|
* jfdctint.c
|
||||||
*
|
*
|
||||||
* Copyright (C) 1991-1996, Thomas G. Lane.
|
|
||||||
* This file is part of the Independent JPEG Group's software.
|
* This file is part of the Independent JPEG Group's software.
|
||||||
* For conditions of distribution and use, see the accompanying README file.
|
*
|
||||||
|
* The authors make NO WARRANTY or representation, either express or implied,
|
||||||
|
* with respect to this software, its quality, accuracy, merchantability, or
|
||||||
|
* fitness for a particular purpose. This software is provided "AS IS", and
|
||||||
|
* you, its user, assume the entire risk as to its quality and accuracy.
|
||||||
|
*
|
||||||
|
* This software is copyright (C) 1991-1996, Thomas G. Lane.
|
||||||
|
* All Rights Reserved except as specified below.
|
||||||
|
*
|
||||||
|
* Permission is hereby granted to use, copy, modify, and distribute this
|
||||||
|
* software (or portions thereof) for any purpose, without fee, subject to
|
||||||
|
* these conditions:
|
||||||
|
* (1) If any part of the source code for this software is distributed, then
|
||||||
|
* this README file must be included, with this copyright and no-warranty
|
||||||
|
* notice unaltered; and any additions, deletions, or changes to the original
|
||||||
|
* files must be clearly indicated in accompanying documentation.
|
||||||
|
* (2) If only executable code is distributed, then the accompanying
|
||||||
|
* documentation must state that "this software is based in part on the work
|
||||||
|
* of the Independent JPEG Group".
|
||||||
|
* (3) Permission for use of this software is granted only if the user accepts
|
||||||
|
* full responsibility for any undesirable consequences; the authors accept
|
||||||
|
* NO LIABILITY for damages of any kind.
|
||||||
|
*
|
||||||
|
* These conditions apply to any software derived from or based on the IJG
|
||||||
|
* code, not just to the unmodified library. If you use our work, you ought
|
||||||
|
* to acknowledge us.
|
||||||
|
*
|
||||||
|
* Permission is NOT granted for the use of any IJG author's name or company
|
||||||
|
* name in advertising or publicity relating to this software or products
|
||||||
|
* derived from it. This software may be referred to only as "the Independent
|
||||||
|
* JPEG Group's software".
|
||||||
|
*
|
||||||
|
* We specifically permit and encourage the use of this software as the basis
|
||||||
|
* of commercial products, provided that all warranty or liability claims are
|
||||||
|
* assumed by the product vendor.
|
||||||
*
|
*
|
||||||
* This file contains a slow-but-accurate integer implementation of the
|
* This file contains a slow-but-accurate integer implementation of the
|
||||||
* forward DCT (Discrete Cosine Transform).
|
* forward DCT (Discrete Cosine Transform).
|
||||||
@@ -27,7 +60,7 @@
|
|||||||
* @file jfdctint.c
|
* @file jfdctint.c
|
||||||
* Independent JPEG Group's slow & accurate dct.
|
* Independent JPEG Group's slow & accurate dct.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#include <stdlib.h>
|
#include <stdlib.h>
|
||||||
#include <stdio.h>
|
#include <stdio.h>
|
||||||
#include "common.h"
|
#include "common.h"
|
||||||
@@ -92,10 +125,10 @@
|
|||||||
|
|
||||||
#if BITS_IN_JSAMPLE == 8
|
#if BITS_IN_JSAMPLE == 8
|
||||||
#define CONST_BITS 13
|
#define CONST_BITS 13
|
||||||
#define PASS1_BITS 4 /* set this to 2 if 16x16 multiplies are faster */
|
#define PASS1_BITS 4 /* set this to 2 if 16x16 multiplies are faster */
|
||||||
#else
|
#else
|
||||||
#define CONST_BITS 13
|
#define CONST_BITS 13
|
||||||
#define PASS1_BITS 1 /* lose a little precision to avoid overflow */
|
#define PASS1_BITS 1 /* lose a little precision to avoid overflow */
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
/* Some C compilers fail to reduce "FIX(constant)" at compile time, thus
|
/* Some C compilers fail to reduce "FIX(constant)" at compile time, thus
|
||||||
@@ -106,18 +139,18 @@
|
|||||||
*/
|
*/
|
||||||
|
|
||||||
#if CONST_BITS == 13
|
#if CONST_BITS == 13
|
||||||
#define FIX_0_298631336 ((int32_t) 2446) /* FIX(0.298631336) */
|
#define FIX_0_298631336 ((int32_t) 2446) /* FIX(0.298631336) */
|
||||||
#define FIX_0_390180644 ((int32_t) 3196) /* FIX(0.390180644) */
|
#define FIX_0_390180644 ((int32_t) 3196) /* FIX(0.390180644) */
|
||||||
#define FIX_0_541196100 ((int32_t) 4433) /* FIX(0.541196100) */
|
#define FIX_0_541196100 ((int32_t) 4433) /* FIX(0.541196100) */
|
||||||
#define FIX_0_765366865 ((int32_t) 6270) /* FIX(0.765366865) */
|
#define FIX_0_765366865 ((int32_t) 6270) /* FIX(0.765366865) */
|
||||||
#define FIX_0_899976223 ((int32_t) 7373) /* FIX(0.899976223) */
|
#define FIX_0_899976223 ((int32_t) 7373) /* FIX(0.899976223) */
|
||||||
#define FIX_1_175875602 ((int32_t) 9633) /* FIX(1.175875602) */
|
#define FIX_1_175875602 ((int32_t) 9633) /* FIX(1.175875602) */
|
||||||
#define FIX_1_501321110 ((int32_t) 12299) /* FIX(1.501321110) */
|
#define FIX_1_501321110 ((int32_t) 12299) /* FIX(1.501321110) */
|
||||||
#define FIX_1_847759065 ((int32_t) 15137) /* FIX(1.847759065) */
|
#define FIX_1_847759065 ((int32_t) 15137) /* FIX(1.847759065) */
|
||||||
#define FIX_1_961570560 ((int32_t) 16069) /* FIX(1.961570560) */
|
#define FIX_1_961570560 ((int32_t) 16069) /* FIX(1.961570560) */
|
||||||
#define FIX_2_053119869 ((int32_t) 16819) /* FIX(2.053119869) */
|
#define FIX_2_053119869 ((int32_t) 16819) /* FIX(2.053119869) */
|
||||||
#define FIX_2_562915447 ((int32_t) 20995) /* FIX(2.562915447) */
|
#define FIX_2_562915447 ((int32_t) 20995) /* FIX(2.562915447) */
|
||||||
#define FIX_3_072711026 ((int32_t) 25172) /* FIX(3.072711026) */
|
#define FIX_3_072711026 ((int32_t) 25172) /* FIX(3.072711026) */
|
||||||
#else
|
#else
|
||||||
#define FIX_0_298631336 FIX(0.298631336)
|
#define FIX_0_298631336 FIX(0.298631336)
|
||||||
#define FIX_0_390180644 FIX(0.390180644)
|
#define FIX_0_390180644 FIX(0.390180644)
|
||||||
@@ -148,7 +181,7 @@
|
|||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
|
||||||
static always_inline void row_fdct(DCTELEM * data){
|
static av_always_inline void row_fdct(DCTELEM * data){
|
||||||
int_fast32_t tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
|
int_fast32_t tmp0, tmp1, tmp2, tmp3, tmp4, tmp5, tmp6, tmp7;
|
||||||
int_fast32_t tmp10, tmp11, tmp12, tmp13;
|
int_fast32_t tmp10, tmp11, tmp12, tmp13;
|
||||||
int_fast32_t z1, z2, z3, z4, z5;
|
int_fast32_t z1, z2, z3, z4, z5;
|
||||||
@@ -170,36 +203,36 @@ static always_inline void row_fdct(DCTELEM * data){
|
|||||||
tmp5 = dataptr[2] - dataptr[5];
|
tmp5 = dataptr[2] - dataptr[5];
|
||||||
tmp3 = dataptr[3] + dataptr[4];
|
tmp3 = dataptr[3] + dataptr[4];
|
||||||
tmp4 = dataptr[3] - dataptr[4];
|
tmp4 = dataptr[3] - dataptr[4];
|
||||||
|
|
||||||
/* Even part per LL&M figure 1 --- note that published figure is faulty;
|
/* Even part per LL&M figure 1 --- note that published figure is faulty;
|
||||||
* rotator "sqrt(2)*c1" should be "sqrt(2)*c6".
|
* rotator "sqrt(2)*c1" should be "sqrt(2)*c6".
|
||||||
*/
|
*/
|
||||||
|
|
||||||
tmp10 = tmp0 + tmp3;
|
tmp10 = tmp0 + tmp3;
|
||||||
tmp13 = tmp0 - tmp3;
|
tmp13 = tmp0 - tmp3;
|
||||||
tmp11 = tmp1 + tmp2;
|
tmp11 = tmp1 + tmp2;
|
||||||
tmp12 = tmp1 - tmp2;
|
tmp12 = tmp1 - tmp2;
|
||||||
|
|
||||||
dataptr[0] = (DCTELEM) ((tmp10 + tmp11) << PASS1_BITS);
|
dataptr[0] = (DCTELEM) ((tmp10 + tmp11) << PASS1_BITS);
|
||||||
dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << PASS1_BITS);
|
dataptr[4] = (DCTELEM) ((tmp10 - tmp11) << PASS1_BITS);
|
||||||
|
|
||||||
z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
|
z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
|
||||||
dataptr[2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp13, FIX_0_765366865),
|
dataptr[2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp13, FIX_0_765366865),
|
||||||
CONST_BITS-PASS1_BITS);
|
CONST_BITS-PASS1_BITS);
|
||||||
dataptr[6] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, - FIX_1_847759065),
|
dataptr[6] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, - FIX_1_847759065),
|
||||||
CONST_BITS-PASS1_BITS);
|
CONST_BITS-PASS1_BITS);
|
||||||
|
|
||||||
/* Odd part per figure 8 --- note paper omits factor of sqrt(2).
|
/* Odd part per figure 8 --- note paper omits factor of sqrt(2).
|
||||||
* cK represents cos(K*pi/16).
|
* cK represents cos(K*pi/16).
|
||||||
* i0..i3 in the paper are tmp4..tmp7 here.
|
* i0..i3 in the paper are tmp4..tmp7 here.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
z1 = tmp4 + tmp7;
|
z1 = tmp4 + tmp7;
|
||||||
z2 = tmp5 + tmp6;
|
z2 = tmp5 + tmp6;
|
||||||
z3 = tmp4 + tmp6;
|
z3 = tmp4 + tmp6;
|
||||||
z4 = tmp5 + tmp7;
|
z4 = tmp5 + tmp7;
|
||||||
z5 = MULTIPLY(z3 + z4, FIX_1_175875602); /* sqrt(2) * c3 */
|
z5 = MULTIPLY(z3 + z4, FIX_1_175875602); /* sqrt(2) * c3 */
|
||||||
|
|
||||||
tmp4 = MULTIPLY(tmp4, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */
|
tmp4 = MULTIPLY(tmp4, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */
|
||||||
tmp5 = MULTIPLY(tmp5, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */
|
tmp5 = MULTIPLY(tmp5, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */
|
||||||
tmp6 = MULTIPLY(tmp6, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */
|
tmp6 = MULTIPLY(tmp6, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */
|
||||||
@@ -208,16 +241,16 @@ static always_inline void row_fdct(DCTELEM * data){
|
|||||||
z2 = MULTIPLY(z2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */
|
z2 = MULTIPLY(z2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */
|
||||||
z3 = MULTIPLY(z3, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */
|
z3 = MULTIPLY(z3, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */
|
||||||
z4 = MULTIPLY(z4, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */
|
z4 = MULTIPLY(z4, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */
|
||||||
|
|
||||||
z3 += z5;
|
z3 += z5;
|
||||||
z4 += z5;
|
z4 += z5;
|
||||||
|
|
||||||
dataptr[7] = (DCTELEM) DESCALE(tmp4 + z1 + z3, CONST_BITS-PASS1_BITS);
|
dataptr[7] = (DCTELEM) DESCALE(tmp4 + z1 + z3, CONST_BITS-PASS1_BITS);
|
||||||
dataptr[5] = (DCTELEM) DESCALE(tmp5 + z2 + z4, CONST_BITS-PASS1_BITS);
|
dataptr[5] = (DCTELEM) DESCALE(tmp5 + z2 + z4, CONST_BITS-PASS1_BITS);
|
||||||
dataptr[3] = (DCTELEM) DESCALE(tmp6 + z2 + z3, CONST_BITS-PASS1_BITS);
|
dataptr[3] = (DCTELEM) DESCALE(tmp6 + z2 + z3, CONST_BITS-PASS1_BITS);
|
||||||
dataptr[1] = (DCTELEM) DESCALE(tmp7 + z1 + z4, CONST_BITS-PASS1_BITS);
|
dataptr[1] = (DCTELEM) DESCALE(tmp7 + z1 + z4, CONST_BITS-PASS1_BITS);
|
||||||
|
|
||||||
dataptr += DCTSIZE; /* advance pointer to next row */
|
dataptr += DCTSIZE; /* advance pointer to next row */
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
@@ -252,36 +285,36 @@ ff_jpeg_fdct_islow (DCTELEM * data)
|
|||||||
tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5];
|
tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*5];
|
||||||
tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4];
|
tmp3 = dataptr[DCTSIZE*3] + dataptr[DCTSIZE*4];
|
||||||
tmp4 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4];
|
tmp4 = dataptr[DCTSIZE*3] - dataptr[DCTSIZE*4];
|
||||||
|
|
||||||
/* Even part per LL&M figure 1 --- note that published figure is faulty;
|
/* Even part per LL&M figure 1 --- note that published figure is faulty;
|
||||||
* rotator "sqrt(2)*c1" should be "sqrt(2)*c6".
|
* rotator "sqrt(2)*c1" should be "sqrt(2)*c6".
|
||||||
*/
|
*/
|
||||||
|
|
||||||
tmp10 = tmp0 + tmp3;
|
tmp10 = tmp0 + tmp3;
|
||||||
tmp13 = tmp0 - tmp3;
|
tmp13 = tmp0 - tmp3;
|
||||||
tmp11 = tmp1 + tmp2;
|
tmp11 = tmp1 + tmp2;
|
||||||
tmp12 = tmp1 - tmp2;
|
tmp12 = tmp1 - tmp2;
|
||||||
|
|
||||||
dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(tmp10 + tmp11, PASS1_BITS);
|
dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(tmp10 + tmp11, PASS1_BITS);
|
||||||
dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(tmp10 - tmp11, PASS1_BITS);
|
dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(tmp10 - tmp11, PASS1_BITS);
|
||||||
|
|
||||||
z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
|
z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
|
||||||
dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp13, FIX_0_765366865),
|
dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp13, FIX_0_765366865),
|
||||||
CONST_BITS+PASS1_BITS);
|
CONST_BITS+PASS1_BITS);
|
||||||
dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, - FIX_1_847759065),
|
dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, - FIX_1_847759065),
|
||||||
CONST_BITS+PASS1_BITS);
|
CONST_BITS+PASS1_BITS);
|
||||||
|
|
||||||
/* Odd part per figure 8 --- note paper omits factor of sqrt(2).
|
/* Odd part per figure 8 --- note paper omits factor of sqrt(2).
|
||||||
* cK represents cos(K*pi/16).
|
* cK represents cos(K*pi/16).
|
||||||
* i0..i3 in the paper are tmp4..tmp7 here.
|
* i0..i3 in the paper are tmp4..tmp7 here.
|
||||||
*/
|
*/
|
||||||
|
|
||||||
z1 = tmp4 + tmp7;
|
z1 = tmp4 + tmp7;
|
||||||
z2 = tmp5 + tmp6;
|
z2 = tmp5 + tmp6;
|
||||||
z3 = tmp4 + tmp6;
|
z3 = tmp4 + tmp6;
|
||||||
z4 = tmp5 + tmp7;
|
z4 = tmp5 + tmp7;
|
||||||
z5 = MULTIPLY(z3 + z4, FIX_1_175875602); /* sqrt(2) * c3 */
|
z5 = MULTIPLY(z3 + z4, FIX_1_175875602); /* sqrt(2) * c3 */
|
||||||
|
|
||||||
tmp4 = MULTIPLY(tmp4, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */
|
tmp4 = MULTIPLY(tmp4, FIX_0_298631336); /* sqrt(2) * (-c1+c3+c5-c7) */
|
||||||
tmp5 = MULTIPLY(tmp5, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */
|
tmp5 = MULTIPLY(tmp5, FIX_2_053119869); /* sqrt(2) * ( c1+c3-c5+c7) */
|
||||||
tmp6 = MULTIPLY(tmp6, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */
|
tmp6 = MULTIPLY(tmp6, FIX_3_072711026); /* sqrt(2) * ( c1+c3+c5-c7) */
|
||||||
@@ -290,20 +323,20 @@ ff_jpeg_fdct_islow (DCTELEM * data)
|
|||||||
z2 = MULTIPLY(z2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */
|
z2 = MULTIPLY(z2, - FIX_2_562915447); /* sqrt(2) * (-c1-c3) */
|
||||||
z3 = MULTIPLY(z3, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */
|
z3 = MULTIPLY(z3, - FIX_1_961570560); /* sqrt(2) * (-c3-c5) */
|
||||||
z4 = MULTIPLY(z4, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */
|
z4 = MULTIPLY(z4, - FIX_0_390180644); /* sqrt(2) * (c5-c3) */
|
||||||
|
|
||||||
z3 += z5;
|
z3 += z5;
|
||||||
z4 += z5;
|
z4 += z5;
|
||||||
|
|
||||||
dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp4 + z1 + z3,
|
dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(tmp4 + z1 + z3,
|
||||||
CONST_BITS+PASS1_BITS);
|
CONST_BITS+PASS1_BITS);
|
||||||
dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp5 + z2 + z4,
|
dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp5 + z2 + z4,
|
||||||
CONST_BITS+PASS1_BITS);
|
CONST_BITS+PASS1_BITS);
|
||||||
dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp6 + z2 + z3,
|
dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(tmp6 + z2 + z3,
|
||||||
CONST_BITS+PASS1_BITS);
|
CONST_BITS+PASS1_BITS);
|
||||||
dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp7 + z1 + z4,
|
dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp7 + z1 + z4,
|
||||||
CONST_BITS+PASS1_BITS);
|
CONST_BITS+PASS1_BITS);
|
||||||
|
|
||||||
dataptr++; /* advance pointer to next column */
|
dataptr++; /* advance pointer to next column */
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
@@ -339,20 +372,20 @@ ff_fdct248_islow (DCTELEM * data)
|
|||||||
tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*3];
|
tmp5 = dataptr[DCTSIZE*2] - dataptr[DCTSIZE*3];
|
||||||
tmp6 = dataptr[DCTSIZE*4] - dataptr[DCTSIZE*5];
|
tmp6 = dataptr[DCTSIZE*4] - dataptr[DCTSIZE*5];
|
||||||
tmp7 = dataptr[DCTSIZE*6] - dataptr[DCTSIZE*7];
|
tmp7 = dataptr[DCTSIZE*6] - dataptr[DCTSIZE*7];
|
||||||
|
|
||||||
tmp10 = tmp0 + tmp3;
|
tmp10 = tmp0 + tmp3;
|
||||||
tmp11 = tmp1 + tmp2;
|
tmp11 = tmp1 + tmp2;
|
||||||
tmp12 = tmp1 - tmp2;
|
tmp12 = tmp1 - tmp2;
|
||||||
tmp13 = tmp0 - tmp3;
|
tmp13 = tmp0 - tmp3;
|
||||||
|
|
||||||
dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(tmp10 + tmp11, PASS1_BITS);
|
dataptr[DCTSIZE*0] = (DCTELEM) DESCALE(tmp10 + tmp11, PASS1_BITS);
|
||||||
dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(tmp10 - tmp11, PASS1_BITS);
|
dataptr[DCTSIZE*4] = (DCTELEM) DESCALE(tmp10 - tmp11, PASS1_BITS);
|
||||||
|
|
||||||
z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
|
z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
|
||||||
dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp13, FIX_0_765366865),
|
dataptr[DCTSIZE*2] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp13, FIX_0_765366865),
|
||||||
CONST_BITS+PASS1_BITS);
|
CONST_BITS+PASS1_BITS);
|
||||||
dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, - FIX_1_847759065),
|
dataptr[DCTSIZE*6] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, - FIX_1_847759065),
|
||||||
CONST_BITS+PASS1_BITS);
|
CONST_BITS+PASS1_BITS);
|
||||||
|
|
||||||
tmp10 = tmp4 + tmp7;
|
tmp10 = tmp4 + tmp7;
|
||||||
tmp11 = tmp5 + tmp6;
|
tmp11 = tmp5 + tmp6;
|
||||||
@@ -361,13 +394,13 @@ ff_fdct248_islow (DCTELEM * data)
|
|||||||
|
|
||||||
dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp10 + tmp11, PASS1_BITS);
|
dataptr[DCTSIZE*1] = (DCTELEM) DESCALE(tmp10 + tmp11, PASS1_BITS);
|
||||||
dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp10 - tmp11, PASS1_BITS);
|
dataptr[DCTSIZE*5] = (DCTELEM) DESCALE(tmp10 - tmp11, PASS1_BITS);
|
||||||
|
|
||||||
z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
|
z1 = MULTIPLY(tmp12 + tmp13, FIX_0_541196100);
|
||||||
dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp13, FIX_0_765366865),
|
dataptr[DCTSIZE*3] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp13, FIX_0_765366865),
|
||||||
CONST_BITS+PASS1_BITS);
|
CONST_BITS+PASS1_BITS);
|
||||||
dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, - FIX_1_847759065),
|
dataptr[DCTSIZE*7] = (DCTELEM) DESCALE(z1 + MULTIPLY(tmp12, - FIX_1_847759065),
|
||||||
CONST_BITS+PASS1_BITS);
|
CONST_BITS+PASS1_BITS);
|
||||||
|
|
||||||
dataptr++; /* advance pointer to next column */
|
dataptr++; /* advance pointer to next column */
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -0,0 +1,89 @@
|
|||||||
|
/*
|
||||||
|
* JPEG-LS common code
|
||||||
|
* Copyright (c) 2003 Michael Niedermayer
|
||||||
|
* Copyright (c) 2006 Konstantin Shishkov
|
||||||
|
*
|
||||||
|
* This file is part of FFmpeg.
|
||||||
|
*
|
||||||
|
* FFmpeg is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU Lesser General Public
|
||||||
|
* License as published by the Free Software Foundation; either
|
||||||
|
* version 2.1 of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* FFmpeg is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
* Lesser General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU Lesser General Public
|
||||||
|
* License along with FFmpeg; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @file jpegls.c
|
||||||
|
* JPEG-LS common code.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "jpegls.h"
|
||||||
|
|
||||||
|
void ff_jpegls_init_state(JLSState *state){
|
||||||
|
int i;
|
||||||
|
|
||||||
|
state->twonear = state->near * 2 + 1;
|
||||||
|
state->range = ((state->maxval + state->twonear - 1) / state->twonear) + 1;
|
||||||
|
|
||||||
|
// QBPP = ceil(log2(RANGE))
|
||||||
|
for(state->qbpp = 0; (1 << state->qbpp) < state->range; state->qbpp++);
|
||||||
|
|
||||||
|
if(state->bpp < 8)
|
||||||
|
state->limit = 16 + 2 * state->bpp - state->qbpp;
|
||||||
|
else
|
||||||
|
state->limit = (4 * state->bpp) - state->qbpp;
|
||||||
|
|
||||||
|
for(i = 0; i < 367; i++) {
|
||||||
|
state->A[i] = FFMAX((state->range + 32) >> 6, 2);
|
||||||
|
state->N[i] = 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Custom value clipping function used in T1, T2, T3 calculation
|
||||||
|
*/
|
||||||
|
static inline int iso_clip(int v, int vmin, int vmax){
|
||||||
|
if(v > vmax || v < vmin) return vmin;
|
||||||
|
else return v;
|
||||||
|
}
|
||||||
|
|
||||||
|
void ff_jpegls_reset_coding_parameters(JLSState *s, int reset_all){
|
||||||
|
const int basic_t1= 3;
|
||||||
|
const int basic_t2= 7;
|
||||||
|
const int basic_t3= 21;
|
||||||
|
int factor;
|
||||||
|
|
||||||
|
if(s->maxval==0 || reset_all) s->maxval= (1 << s->bpp) - 1;
|
||||||
|
|
||||||
|
if(s->maxval >=128){
|
||||||
|
factor= (FFMIN(s->maxval, 4095) + 128)>>8;
|
||||||
|
|
||||||
|
if(s->T1==0 || reset_all)
|
||||||
|
s->T1= iso_clip(factor*(basic_t1-2) + 2 + 3*s->near, s->near+1, s->maxval);
|
||||||
|
if(s->T2==0 || reset_all)
|
||||||
|
s->T2= iso_clip(factor*(basic_t2-3) + 3 + 5*s->near, s->T1, s->maxval);
|
||||||
|
if(s->T3==0 || reset_all)
|
||||||
|
s->T3= iso_clip(factor*(basic_t3-4) + 4 + 7*s->near, s->T2, s->maxval);
|
||||||
|
}else{
|
||||||
|
factor= 256 / (s->maxval + 1);
|
||||||
|
|
||||||
|
if(s->T1==0 || reset_all)
|
||||||
|
s->T1= iso_clip(FFMAX(2, basic_t1/factor + 3*s->near), s->near+1, s->maxval);
|
||||||
|
if(s->T2==0 || reset_all)
|
||||||
|
s->T2= iso_clip(FFMAX(3, basic_t2/factor + 5*s->near), s->T1, s->maxval);
|
||||||
|
if(s->T3==0 || reset_all)
|
||||||
|
s->T3= iso_clip(FFMAX(4, basic_t3/factor + 7*s->near), s->T2, s->maxval);
|
||||||
|
}
|
||||||
|
|
||||||
|
if(s->reset==0 || reset_all) s->reset= 64;
|
||||||
|
// av_log(NULL, AV_LOG_DEBUG, "[JPEG-LS RESET] T=%i,%i,%i\n", s->T1, s->T2, s->T3);
|
||||||
|
}
|
||||||
@@ -0,0 +1,111 @@
|
|||||||
|
/*
|
||||||
|
* JPEG-LS common code
|
||||||
|
* Copyright (c) 2003 Michael Niedermayer
|
||||||
|
* Copyright (c) 2006 Konstantin Shishkov
|
||||||
|
*
|
||||||
|
* This file is part of FFmpeg.
|
||||||
|
*
|
||||||
|
* FFmpeg is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU Lesser General Public
|
||||||
|
* License as published by the Free Software Foundation; either
|
||||||
|
* version 2.1 of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* FFmpeg is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
* Lesser General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU Lesser General Public
|
||||||
|
* License along with FFmpeg; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @file jpegls.h
|
||||||
|
* JPEG-LS common code.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef FFMPEG_JPEGLS_H
|
||||||
|
#define FFMPEG_JPEGLS_H
|
||||||
|
|
||||||
|
#include "avcodec.h"
|
||||||
|
|
||||||
|
typedef struct JpeglsContext{
|
||||||
|
AVCodecContext *avctx;
|
||||||
|
AVFrame picture;
|
||||||
|
}JpeglsContext;
|
||||||
|
|
||||||
|
typedef struct JLSState{
|
||||||
|
int T1, T2, T3;
|
||||||
|
int A[367], B[367], C[365], N[367];
|
||||||
|
int limit, reset, bpp, qbpp, maxval, range;
|
||||||
|
int near, twonear;
|
||||||
|
int run_index[3];
|
||||||
|
}JLSState;
|
||||||
|
|
||||||
|
extern const uint8_t ff_log2_run[32];
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Calculate initial JPEG-LS parameters
|
||||||
|
*/
|
||||||
|
void ff_jpegls_init_state(JLSState *state);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Calculate quantized gradient value, used for context determination
|
||||||
|
*/
|
||||||
|
static inline int ff_jpegls_quantize(JLSState *s, int v){ //FIXME optimize
|
||||||
|
if(v==0) return 0;
|
||||||
|
if(v < 0){
|
||||||
|
if(v <= -s->T3) return -4;
|
||||||
|
if(v <= -s->T2) return -3;
|
||||||
|
if(v <= -s->T1) return -2;
|
||||||
|
if(v < -s->near) return -1;
|
||||||
|
return 0;
|
||||||
|
}else{
|
||||||
|
if(v <= s->near) return 0;
|
||||||
|
if(v < s->T1) return 1;
|
||||||
|
if(v < s->T2) return 2;
|
||||||
|
if(v < s->T3) return 3;
|
||||||
|
return 4;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Calculate JPEG-LS codec values
|
||||||
|
*/
|
||||||
|
void ff_jpegls_reset_coding_parameters(JLSState *s, int reset_all);
|
||||||
|
|
||||||
|
|
||||||
|
static inline void ff_jpegls_downscale_state(JLSState *state, int Q){
|
||||||
|
if(state->N[Q] == state->reset){
|
||||||
|
state->A[Q] >>=1;
|
||||||
|
state->B[Q] >>=1;
|
||||||
|
state->N[Q] >>=1;
|
||||||
|
}
|
||||||
|
state->N[Q]++;
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline int ff_jpegls_update_state_regular(JLSState *state, int Q, int err){
|
||||||
|
state->A[Q] += FFABS(err);
|
||||||
|
err *= state->twonear;
|
||||||
|
state->B[Q] += err;
|
||||||
|
|
||||||
|
ff_jpegls_downscale_state(state, Q);
|
||||||
|
|
||||||
|
if(state->B[Q] <= -state->N[Q]) {
|
||||||
|
state->B[Q]= FFMAX(state->B[Q] + state->N[Q], 1-state->N[Q]);
|
||||||
|
if(state->C[Q] > -128)
|
||||||
|
state->C[Q]--;
|
||||||
|
}else if(state->B[Q] > 0){
|
||||||
|
state->B[Q]= FFMIN(state->B[Q] - state->N[Q], 0);
|
||||||
|
if(state->C[Q] < 127)
|
||||||
|
state->C[Q]++;
|
||||||
|
}
|
||||||
|
|
||||||
|
return err;
|
||||||
|
}
|
||||||
|
|
||||||
|
#define R(a, i ) (bits == 8 ? ((uint8_t*)(a))[i] : ((uint16_t*)(a))[i] )
|
||||||
|
#define W(a, i, v) (bits == 8 ? (((uint8_t*)(a))[i]=v) : (((uint16_t*)(a))[i]=v))
|
||||||
|
|
||||||
|
#endif /* FFMPEG_JPEGLS_H */
|
||||||
@@ -0,0 +1,376 @@
|
|||||||
|
/*
|
||||||
|
* JPEG-LS decoder
|
||||||
|
* Copyright (c) 2003 Michael Niedermayer
|
||||||
|
* Copyright (c) 2006 Konstantin Shishkov
|
||||||
|
*
|
||||||
|
* This file is part of FFmpeg.
|
||||||
|
*
|
||||||
|
* FFmpeg is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU Lesser General Public
|
||||||
|
* License as published by the Free Software Foundation; either
|
||||||
|
* version 2.1 of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* FFmpeg is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
* Lesser General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU Lesser General Public
|
||||||
|
* License along with FFmpeg; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @file jpeglsdec.c
|
||||||
|
* JPEG-LS decoder.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "avcodec.h"
|
||||||
|
#include "bitstream.h"
|
||||||
|
#include "golomb.h"
|
||||||
|
#include "mjpeg.h"
|
||||||
|
#include "mjpegdec.h"
|
||||||
|
#include "jpegls.h"
|
||||||
|
#include "jpeglsdec.h"
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Uncomment this to significantly speed up decoding of broken JPEG-LS
|
||||||
|
* (or test broken JPEG-LS decoder) and slow down ordinary decoding a bit.
|
||||||
|
*
|
||||||
|
* There is no Golomb code with length >= 32 bits possible, so check and
|
||||||
|
* avoid situation of 32 zeros, FFmpeg Golomb decoder is painfully slow
|
||||||
|
* on this errors.
|
||||||
|
*/
|
||||||
|
//#define JLS_BROKEN
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Decode LSE block with initialization parameters
|
||||||
|
*/
|
||||||
|
int ff_jpegls_decode_lse(MJpegDecodeContext *s)
|
||||||
|
{
|
||||||
|
int len, id;
|
||||||
|
|
||||||
|
/* XXX: verify len field validity */
|
||||||
|
len = get_bits(&s->gb, 16);
|
||||||
|
id = get_bits(&s->gb, 8);
|
||||||
|
|
||||||
|
switch(id){
|
||||||
|
case 1:
|
||||||
|
s->maxval= get_bits(&s->gb, 16);
|
||||||
|
s->t1= get_bits(&s->gb, 16);
|
||||||
|
s->t2= get_bits(&s->gb, 16);
|
||||||
|
s->t3= get_bits(&s->gb, 16);
|
||||||
|
s->reset= get_bits(&s->gb, 16);
|
||||||
|
|
||||||
|
// ff_jpegls_reset_coding_parameters(s, 0);
|
||||||
|
//FIXME quant table?
|
||||||
|
break;
|
||||||
|
case 2:
|
||||||
|
case 3:
|
||||||
|
av_log(s->avctx, AV_LOG_ERROR, "palette not supported\n");
|
||||||
|
return -1;
|
||||||
|
case 4:
|
||||||
|
av_log(s->avctx, AV_LOG_ERROR, "oversize image not supported\n");
|
||||||
|
return -1;
|
||||||
|
default:
|
||||||
|
av_log(s->avctx, AV_LOG_ERROR, "invalid id %d\n", id);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
// av_log(s->avctx, AV_LOG_DEBUG, "ID=%i, T=%i,%i,%i\n", id, s->t1, s->t2, s->t3);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Get context-dependent Golomb code, decode it and update context
|
||||||
|
*/
|
||||||
|
static inline int ls_get_code_regular(GetBitContext *gb, JLSState *state, int Q){
|
||||||
|
int k, ret;
|
||||||
|
|
||||||
|
for(k = 0; (state->N[Q] << k) < state->A[Q]; k++);
|
||||||
|
|
||||||
|
#ifdef JLS_BROKEN
|
||||||
|
if(!show_bits_long(gb, 32))return -1;
|
||||||
|
#endif
|
||||||
|
ret = get_ur_golomb_jpegls(gb, k, state->limit, state->qbpp);
|
||||||
|
|
||||||
|
/* decode mapped error */
|
||||||
|
if(ret & 1)
|
||||||
|
ret = -((ret + 1) >> 1);
|
||||||
|
else
|
||||||
|
ret >>= 1;
|
||||||
|
|
||||||
|
/* for NEAR=0, k=0 and 2*B[Q] <= - N[Q] mapping is reversed */
|
||||||
|
if(!state->near && !k && (2 * state->B[Q] <= -state->N[Q]))
|
||||||
|
ret = -(ret + 1);
|
||||||
|
|
||||||
|
ret= ff_jpegls_update_state_regular(state, Q, ret);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Get Golomb code, decode it and update state for run termination
|
||||||
|
*/
|
||||||
|
static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state, int RItype, int limit_add){
|
||||||
|
int k, ret, temp, map;
|
||||||
|
int Q = 365 + RItype;
|
||||||
|
|
||||||
|
temp= state->A[Q];
|
||||||
|
if(RItype)
|
||||||
|
temp += state->N[Q] >> 1;
|
||||||
|
|
||||||
|
for(k = 0; (state->N[Q] << k) < temp; k++);
|
||||||
|
|
||||||
|
#ifdef JLS_BROKEN
|
||||||
|
if(!show_bits_long(gb, 32))return -1;
|
||||||
|
#endif
|
||||||
|
ret = get_ur_golomb_jpegls(gb, k, state->limit - limit_add - 1, state->qbpp);
|
||||||
|
|
||||||
|
/* decode mapped error */
|
||||||
|
map = 0;
|
||||||
|
if(!k && (RItype || ret) && (2 * state->B[Q] < state->N[Q]))
|
||||||
|
map = 1;
|
||||||
|
ret += RItype + map;
|
||||||
|
|
||||||
|
if(ret & 1){
|
||||||
|
ret = map - ((ret + 1) >> 1);
|
||||||
|
state->B[Q]++;
|
||||||
|
} else {
|
||||||
|
ret = ret >> 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* update state */
|
||||||
|
state->A[Q] += FFABS(ret) - RItype;
|
||||||
|
ret *= state->twonear;
|
||||||
|
ff_jpegls_downscale_state(state, Q);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Decode one line of image
|
||||||
|
*/
|
||||||
|
static inline void ls_decode_line(JLSState *state, MJpegDecodeContext *s, void *last, void *dst, int last2, int w, int stride, int comp, int bits){
|
||||||
|
int i, x = 0;
|
||||||
|
int Ra, Rb, Rc, Rd;
|
||||||
|
int D0, D1, D2;
|
||||||
|
|
||||||
|
while(x < w) {
|
||||||
|
int err, pred;
|
||||||
|
|
||||||
|
/* compute gradients */
|
||||||
|
Ra = x ? R(dst, x - stride) : R(last, x);
|
||||||
|
Rb = R(last, x);
|
||||||
|
Rc = x ? R(last, x - stride) : last2;
|
||||||
|
Rd = (x >= w - stride) ? R(last, x) : R(last, x + stride);
|
||||||
|
D0 = Rd - Rb;
|
||||||
|
D1 = Rb - Rc;
|
||||||
|
D2 = Rc - Ra;
|
||||||
|
/* run mode */
|
||||||
|
if((FFABS(D0) <= state->near) && (FFABS(D1) <= state->near) && (FFABS(D2) <= state->near)) {
|
||||||
|
int r;
|
||||||
|
int RItype;
|
||||||
|
|
||||||
|
/* decode full runs while available */
|
||||||
|
while(get_bits1(&s->gb)) {
|
||||||
|
int r;
|
||||||
|
r = 1 << ff_log2_run[state->run_index[comp]];
|
||||||
|
if(x + r * stride > w) {
|
||||||
|
r = (w - x) / stride;
|
||||||
|
}
|
||||||
|
for(i = 0; i < r; i++) {
|
||||||
|
W(dst, x, Ra);
|
||||||
|
x += stride;
|
||||||
|
}
|
||||||
|
/* if EOL reached, we stop decoding */
|
||||||
|
if(r != (1 << ff_log2_run[state->run_index[comp]]))
|
||||||
|
return;
|
||||||
|
if(state->run_index[comp] < 31)
|
||||||
|
state->run_index[comp]++;
|
||||||
|
if(x + stride > w)
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
/* decode aborted run */
|
||||||
|
r = ff_log2_run[state->run_index[comp]];
|
||||||
|
if(r)
|
||||||
|
r = get_bits_long(&s->gb, r);
|
||||||
|
for(i = 0; i < r; i++) {
|
||||||
|
W(dst, x, Ra);
|
||||||
|
x += stride;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* decode run termination value */
|
||||||
|
Rb = R(last, x);
|
||||||
|
RItype = (FFABS(Ra - Rb) <= state->near) ? 1 : 0;
|
||||||
|
err = ls_get_code_runterm(&s->gb, state, RItype, ff_log2_run[state->run_index[comp]]);
|
||||||
|
if(state->run_index[comp])
|
||||||
|
state->run_index[comp]--;
|
||||||
|
|
||||||
|
if(state->near && RItype){
|
||||||
|
pred = Ra + err;
|
||||||
|
} else {
|
||||||
|
if(Rb < Ra)
|
||||||
|
pred = Rb - err;
|
||||||
|
else
|
||||||
|
pred = Rb + err;
|
||||||
|
}
|
||||||
|
} else { /* regular mode */
|
||||||
|
int context, sign;
|
||||||
|
|
||||||
|
context = ff_jpegls_quantize(state, D0) * 81 + ff_jpegls_quantize(state, D1) * 9 + ff_jpegls_quantize(state, D2);
|
||||||
|
pred = mid_pred(Ra, Ra + Rb - Rc, Rb);
|
||||||
|
|
||||||
|
if(context < 0){
|
||||||
|
context = -context;
|
||||||
|
sign = 1;
|
||||||
|
}else{
|
||||||
|
sign = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
if(sign){
|
||||||
|
pred = av_clip(pred - state->C[context], 0, state->maxval);
|
||||||
|
err = -ls_get_code_regular(&s->gb, state, context);
|
||||||
|
} else {
|
||||||
|
pred = av_clip(pred + state->C[context], 0, state->maxval);
|
||||||
|
err = ls_get_code_regular(&s->gb, state, context);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* we have to do something more for near-lossless coding */
|
||||||
|
pred += err;
|
||||||
|
}
|
||||||
|
if(state->near){
|
||||||
|
if(pred < -state->near)
|
||||||
|
pred += state->range * state->twonear;
|
||||||
|
else if(pred > state->maxval + state->near)
|
||||||
|
pred -= state->range * state->twonear;
|
||||||
|
pred = av_clip(pred, 0, state->maxval);
|
||||||
|
}
|
||||||
|
|
||||||
|
pred &= state->maxval;
|
||||||
|
W(dst, x, pred);
|
||||||
|
x += stride;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transform, int ilv){
|
||||||
|
int i, t = 0;
|
||||||
|
uint8_t *zero, *last, *cur;
|
||||||
|
JLSState *state;
|
||||||
|
int off = 0, stride = 1, width, shift;
|
||||||
|
|
||||||
|
zero = av_mallocz(s->picture.linesize[0]);
|
||||||
|
last = zero;
|
||||||
|
cur = s->picture.data[0];
|
||||||
|
|
||||||
|
state = av_mallocz(sizeof(JLSState));
|
||||||
|
/* initialize JPEG-LS state from JPEG parameters */
|
||||||
|
state->near = near;
|
||||||
|
state->bpp = (s->bits < 2) ? 2 : s->bits;
|
||||||
|
state->maxval = s->maxval;
|
||||||
|
state->T1 = s->t1;
|
||||||
|
state->T2 = s->t2;
|
||||||
|
state->T3 = s->t3;
|
||||||
|
state->reset = s->reset;
|
||||||
|
ff_jpegls_reset_coding_parameters(state, 0);
|
||||||
|
ff_jpegls_init_state(state);
|
||||||
|
|
||||||
|
if(s->bits <= 8)
|
||||||
|
shift = point_transform + (8 - s->bits);
|
||||||
|
else
|
||||||
|
shift = point_transform + (16 - s->bits);
|
||||||
|
|
||||||
|
// av_log(s->avctx, AV_LOG_DEBUG, "JPEG-LS params: %ix%i NEAR=%i MV=%i T(%i,%i,%i) RESET=%i, LIMIT=%i, qbpp=%i, RANGE=%i\n",s->width,s->height,state->near,state->maxval,state->T1,state->T2,state->T3,state->reset,state->limit,state->qbpp, state->range);
|
||||||
|
// av_log(s->avctx, AV_LOG_DEBUG, "JPEG params: ILV=%i Pt=%i BPP=%i, scan = %i\n", ilv, point_transform, s->bits, s->cur_scan);
|
||||||
|
if(ilv == 0) { /* separate planes */
|
||||||
|
off = s->cur_scan - 1;
|
||||||
|
stride = (s->nb_components > 1) ? 3 : 1;
|
||||||
|
width = s->width * stride;
|
||||||
|
cur += off;
|
||||||
|
for(i = 0; i < s->height; i++) {
|
||||||
|
if(s->bits <= 8){
|
||||||
|
ls_decode_line(state, s, last, cur, t, width, stride, off, 8);
|
||||||
|
t = last[0];
|
||||||
|
}else{
|
||||||
|
ls_decode_line(state, s, last, cur, t, width, stride, off, 16);
|
||||||
|
t = *((uint16_t*)last);
|
||||||
|
}
|
||||||
|
last = cur;
|
||||||
|
cur += s->picture.linesize[0];
|
||||||
|
|
||||||
|
if (s->restart_interval && !--s->restart_count) {
|
||||||
|
align_get_bits(&s->gb);
|
||||||
|
skip_bits(&s->gb, 16); /* skip RSTn */
|
||||||
|
}
|
||||||
|
}
|
||||||
|
} else if(ilv == 1) { /* line interleaving */
|
||||||
|
int j;
|
||||||
|
int Rc[3] = {0, 0, 0};
|
||||||
|
memset(cur, 0, s->picture.linesize[0]);
|
||||||
|
width = s->width * 3;
|
||||||
|
for(i = 0; i < s->height; i++) {
|
||||||
|
for(j = 0; j < 3; j++) {
|
||||||
|
ls_decode_line(state, s, last + j, cur + j, Rc[j], width, 3, j, 8);
|
||||||
|
Rc[j] = last[j];
|
||||||
|
|
||||||
|
if (s->restart_interval && !--s->restart_count) {
|
||||||
|
align_get_bits(&s->gb);
|
||||||
|
skip_bits(&s->gb, 16); /* skip RSTn */
|
||||||
|
}
|
||||||
|
}
|
||||||
|
last = cur;
|
||||||
|
cur += s->picture.linesize[0];
|
||||||
|
}
|
||||||
|
} else if(ilv == 2) { /* sample interleaving */
|
||||||
|
av_log(s->avctx, AV_LOG_ERROR, "Sample interleaved images are not supported.\n");
|
||||||
|
av_free(state);
|
||||||
|
av_free(zero);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if(shift){ /* we need to do point transform or normalize samples */
|
||||||
|
int x, w;
|
||||||
|
|
||||||
|
w = s->width * s->nb_components;
|
||||||
|
|
||||||
|
if(s->bits <= 8){
|
||||||
|
uint8_t *src = s->picture.data[0];
|
||||||
|
|
||||||
|
for(i = 0; i < s->height; i++){
|
||||||
|
for(x = off; x < w; x+= stride){
|
||||||
|
src[x] <<= shift;
|
||||||
|
}
|
||||||
|
src += s->picture.linesize[0];
|
||||||
|
}
|
||||||
|
}else{
|
||||||
|
uint16_t *src = (uint16_t*) s->picture.data[0];
|
||||||
|
|
||||||
|
for(i = 0; i < s->height; i++){
|
||||||
|
for(x = 0; x < w; x++){
|
||||||
|
src[x] <<= shift;
|
||||||
|
}
|
||||||
|
src += s->picture.linesize[0]/2;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
av_free(state);
|
||||||
|
av_free(zero);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
AVCodec jpegls_decoder = {
|
||||||
|
"jpegls",
|
||||||
|
CODEC_TYPE_VIDEO,
|
||||||
|
CODEC_ID_JPEGLS,
|
||||||
|
sizeof(MJpegDecodeContext),
|
||||||
|
ff_mjpeg_decode_init,
|
||||||
|
NULL,
|
||||||
|
ff_mjpeg_decode_end,
|
||||||
|
ff_mjpeg_decode_frame,
|
||||||
|
CODEC_CAP_DR1,
|
||||||
|
.long_name = NULL_IF_CONFIG_SMALL("JPEG-LS"),
|
||||||
|
};
|
||||||
@@ -0,0 +1,41 @@
|
|||||||
|
/*
|
||||||
|
* JPEG-LS decoder
|
||||||
|
* Copyright (c) 2003 Michael Niedermayer
|
||||||
|
* Copyright (c) 2006 Konstantin Shishkov
|
||||||
|
*
|
||||||
|
* This file is part of FFmpeg.
|
||||||
|
*
|
||||||
|
* FFmpeg is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU Lesser General Public
|
||||||
|
* License as published by the Free Software Foundation; either
|
||||||
|
* version 2.1 of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* FFmpeg is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
* Lesser General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU Lesser General Public
|
||||||
|
* License along with FFmpeg; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @file jpeglsdec.h
|
||||||
|
* JPEG-LS decoder.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef FFMPEG_JPEGLSDEC_H
|
||||||
|
#define FFMPEG_JPEGLSDEC_H
|
||||||
|
|
||||||
|
#include "mjpeg.h"
|
||||||
|
#include "mjpegdec.h"
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Decode LSE block with initialization parameters
|
||||||
|
*/
|
||||||
|
int ff_jpegls_decode_lse(MJpegDecodeContext *s);
|
||||||
|
|
||||||
|
int ff_jpegls_decode_picture(MJpegDecodeContext *s, int near, int point_transform, int ilv);
|
||||||
|
|
||||||
|
#endif /* FFMPEG_JPEGLSDEC_H */
|
||||||
@@ -0,0 +1,394 @@
|
|||||||
|
/*
|
||||||
|
* JPEG-LS encoder
|
||||||
|
* Copyright (c) 2003 Michael Niedermayer
|
||||||
|
* Copyright (c) 2006 Konstantin Shishkov
|
||||||
|
*
|
||||||
|
* This file is part of FFmpeg.
|
||||||
|
*
|
||||||
|
* FFmpeg is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU Lesser General Public
|
||||||
|
* License as published by the Free Software Foundation; either
|
||||||
|
* version 2.1 of the License, or (at your option) any later version.
|
||||||
|
*
|
||||||
|
* FFmpeg is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
* Lesser General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU Lesser General Public
|
||||||
|
* License along with FFmpeg; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @file jpeglsenc.c
|
||||||
|
* JPEG-LS encoder.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "avcodec.h"
|
||||||
|
#include "bitstream.h"
|
||||||
|
#include "golomb.h"
|
||||||
|
#include "dsputil.h"
|
||||||
|
#include "mjpeg.h"
|
||||||
|
#include "jpegls.h"
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Encode error from regular symbol
|
||||||
|
*/
|
||||||
|
static inline void ls_encode_regular(JLSState *state, PutBitContext *pb, int Q, int err){
|
||||||
|
int k;
|
||||||
|
int val;
|
||||||
|
int map;
|
||||||
|
|
||||||
|
for(k = 0; (state->N[Q] << k) < state->A[Q]; k++);
|
||||||
|
|
||||||
|
map = !state->near && !k && (2 * state->B[Q] <= -state->N[Q]);
|
||||||
|
|
||||||
|
if(err < 0)
|
||||||
|
err += state->range;
|
||||||
|
if(err >= ((state->range + 1) >> 1)) {
|
||||||
|
err -= state->range;
|
||||||
|
val = 2 * FFABS(err) - 1 - map;
|
||||||
|
} else
|
||||||
|
val = 2 * err + map;
|
||||||
|
|
||||||
|
set_ur_golomb_jpegls(pb, val, k, state->limit, state->qbpp);
|
||||||
|
|
||||||
|
ff_jpegls_update_state_regular(state, Q, err);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Encode error from run termination
|
||||||
|
*/
|
||||||
|
static inline void ls_encode_runterm(JLSState *state, PutBitContext *pb, int RItype, int err, int limit_add){
|
||||||
|
int k;
|
||||||
|
int val, map;
|
||||||
|
int Q = 365 + RItype;
|
||||||
|
int temp;
|
||||||
|
|
||||||
|
temp = state->A[Q];
|
||||||
|
if(RItype)
|
||||||
|
temp += state->N[Q] >> 1;
|
||||||
|
for(k = 0; (state->N[Q] << k) < temp; k++);
|
||||||
|
map = 0;
|
||||||
|
if(!k && err && (2 * state->B[Q] < state->N[Q]))
|
||||||
|
map = 1;
|
||||||
|
|
||||||
|
if(err < 0)
|
||||||
|
val = - (2 * err) - 1 - RItype + map;
|
||||||
|
else
|
||||||
|
val = 2 * err - RItype - map;
|
||||||
|
set_ur_golomb_jpegls(pb, val, k, state->limit - limit_add - 1, state->qbpp);
|
||||||
|
|
||||||
|
if(err < 0)
|
||||||
|
state->B[Q]++;
|
||||||
|
state->A[Q] += (val + 1 - RItype) >> 1;
|
||||||
|
|
||||||
|
ff_jpegls_downscale_state(state, Q);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Encode run value as specified by JPEG-LS standard
|
||||||
|
*/
|
||||||
|
static inline void ls_encode_run(JLSState *state, PutBitContext *pb, int run, int comp, int trail){
|
||||||
|
while(run >= (1 << ff_log2_run[state->run_index[comp]])){
|
||||||
|
put_bits(pb, 1, 1);
|
||||||
|
run -= 1 << ff_log2_run[state->run_index[comp]];
|
||||||
|
if(state->run_index[comp] < 31)
|
||||||
|
state->run_index[comp]++;
|
||||||
|
}
|
||||||
|
/* if hit EOL, encode another full run, else encode aborted run */
|
||||||
|
if(!trail && run) {
|
||||||
|
put_bits(pb, 1, 1);
|
||||||
|
}else if(trail){
|
||||||
|
put_bits(pb, 1, 0);
|
||||||
|
if(ff_log2_run[state->run_index[comp]])
|
||||||
|
put_bits(pb, ff_log2_run[state->run_index[comp]], run);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Encode one line of image
|
||||||
|
*/
|
||||||
|
static inline void ls_encode_line(JLSState *state, PutBitContext *pb, void *last, void *cur, int last2, int w, int stride, int comp, int bits){
|
||||||
|
int x = 0;
|
||||||
|
int Ra, Rb, Rc, Rd;
|
||||||
|
int D0, D1, D2;
|
||||||
|
|
||||||
|
while(x < w) {
|
||||||
|
int err, pred, sign;
|
||||||
|
|
||||||
|
/* compute gradients */
|
||||||
|
Ra = x ? R(cur, x - stride) : R(last, x);
|
||||||
|
Rb = R(last, x);
|
||||||
|
Rc = x ? R(last, x - stride) : last2;
|
||||||
|
Rd = (x >= w - stride) ? R(last, x) : R(last, x + stride);
|
||||||
|
D0 = Rd - Rb;
|
||||||
|
D1 = Rb - Rc;
|
||||||
|
D2 = Rc - Ra;
|
||||||
|
|
||||||
|
/* run mode */
|
||||||
|
if((FFABS(D0) <= state->near) && (FFABS(D1) <= state->near) && (FFABS(D2) <= state->near)) {
|
||||||
|
int RUNval, RItype, run;
|
||||||
|
|
||||||
|
run = 0;
|
||||||
|
RUNval = Ra;
|
||||||
|
while(x < w && (FFABS(R(cur, x) - RUNval) <= state->near)){
|
||||||
|
run++;
|
||||||
|
W(cur, x, Ra);
|
||||||
|
x += stride;
|
||||||
|
}
|
||||||
|
ls_encode_run(state, pb, run, comp, x < w);
|
||||||
|
if(x >= w)
|
||||||
|
return;
|
||||||
|
Rb = R(last, x);
|
||||||
|
RItype = (FFABS(Ra - Rb) <= state->near);
|
||||||
|
pred = RItype ? Ra : Rb;
|
||||||
|
err = R(cur, x) - pred;
|
||||||
|
|
||||||
|
if(!RItype && Ra > Rb)
|
||||||
|
err = -err;
|
||||||
|
|
||||||
|
if(state->near){
|
||||||
|
if(err > 0)
|
||||||
|
err = (state->near + err) / state->twonear;
|
||||||
|
else
|
||||||
|
err = -(state->near - err) / state->twonear;
|
||||||
|
|
||||||
|
if(RItype || (Rb >= Ra))
|
||||||
|
Ra = av_clip(pred + err * state->twonear, 0, state->maxval);
|
||||||
|
else
|
||||||
|
Ra = av_clip(pred - err * state->twonear, 0, state->maxval);
|
||||||
|
W(cur, x, Ra);
|
||||||
|
}
|
||||||
|
if(err < 0)
|
||||||
|
err += state->range;
|
||||||
|
if(err >= ((state->range + 1) >> 1))
|
||||||
|
err -= state->range;
|
||||||
|
|
||||||
|
ls_encode_runterm(state, pb, RItype, err, ff_log2_run[state->run_index[comp]]);
|
||||||
|
|
||||||
|
if(state->run_index[comp] > 0)
|
||||||
|
state->run_index[comp]--;
|
||||||
|
} else { /* regular mode */
|
||||||
|
int context;
|
||||||
|
|
||||||
|
context = ff_jpegls_quantize(state, D0) * 81 + ff_jpegls_quantize(state, D1) * 9 + ff_jpegls_quantize(state, D2);
|
||||||
|
pred = mid_pred(Ra, Ra + Rb - Rc, Rb);
|
||||||
|
|
||||||
|
if(context < 0){
|
||||||
|
context = -context;
|
||||||
|
sign = 1;
|
||||||
|
pred = av_clip(pred - state->C[context], 0, state->maxval);
|
||||||
|
err = pred - R(cur, x);
|
||||||
|
}else{
|
||||||
|
sign = 0;
|
||||||
|
pred = av_clip(pred + state->C[context], 0, state->maxval);
|
||||||
|
err = R(cur, x) - pred;
|
||||||
|
}
|
||||||
|
|
||||||
|
if(state->near){
|
||||||
|
if(err > 0)
|
||||||
|
err = (state->near + err) / state->twonear;
|
||||||
|
else
|
||||||
|
err = -(state->near - err) / state->twonear;
|
||||||
|
if(!sign)
|
||||||
|
Ra = av_clip(pred + err * state->twonear, 0, state->maxval);
|
||||||
|
else
|
||||||
|
Ra = av_clip(pred - err * state->twonear, 0, state->maxval);
|
||||||
|
W(cur, x, Ra);
|
||||||
|
}
|
||||||
|
|
||||||
|
ls_encode_regular(state, pb, context, err);
|
||||||
|
}
|
||||||
|
x += stride;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void ls_store_lse(JLSState *state, PutBitContext *pb){
|
||||||
|
/* Test if we have default params and don't need to store LSE */
|
||||||
|
JLSState state2;
|
||||||
|
memset(&state2, 0, sizeof(JLSState));
|
||||||
|
state2.bpp = state->bpp;
|
||||||
|
state2.near = state->near;
|
||||||
|
ff_jpegls_reset_coding_parameters(&state2, 1);
|
||||||
|
if(state->T1 == state2.T1 && state->T2 == state2.T2 && state->T3 == state2.T3 && state->reset == state2.reset)
|
||||||
|
return;
|
||||||
|
/* store LSE type 1 */
|
||||||
|
put_marker(pb, LSE);
|
||||||
|
put_bits(pb, 16, 13);
|
||||||
|
put_bits(pb, 8, 1);
|
||||||
|
put_bits(pb, 16, state->maxval);
|
||||||
|
put_bits(pb, 16, state->T1);
|
||||||
|
put_bits(pb, 16, state->T2);
|
||||||
|
put_bits(pb, 16, state->T3);
|
||||||
|
put_bits(pb, 16, state->reset);
|
||||||
|
}
|
||||||
|
|
||||||
|
static int encode_picture_ls(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
|
||||||
|
JpeglsContext * const s = avctx->priv_data;
|
||||||
|
AVFrame *pict = data;
|
||||||
|
AVFrame * const p= (AVFrame*)&s->picture;
|
||||||
|
const int near = avctx->prediction_method;
|
||||||
|
PutBitContext pb, pb2;
|
||||||
|
GetBitContext gb;
|
||||||
|
uint8_t *buf2, *zero, *cur, *last;
|
||||||
|
JLSState *state;
|
||||||
|
int i, size;
|
||||||
|
int comps;
|
||||||
|
|
||||||
|
buf2 = av_malloc(buf_size);
|
||||||
|
|
||||||
|
init_put_bits(&pb, buf, buf_size);
|
||||||
|
init_put_bits(&pb2, buf2, buf_size);
|
||||||
|
|
||||||
|
*p = *pict;
|
||||||
|
p->pict_type= FF_I_TYPE;
|
||||||
|
p->key_frame= 1;
|
||||||
|
|
||||||
|
if(avctx->pix_fmt == PIX_FMT_GRAY8 || avctx->pix_fmt == PIX_FMT_GRAY16)
|
||||||
|
comps = 1;
|
||||||
|
else
|
||||||
|
comps = 3;
|
||||||
|
|
||||||
|
/* write our own JPEG header, can't use mjpeg_picture_header */
|
||||||
|
put_marker(&pb, SOI);
|
||||||
|
put_marker(&pb, SOF48);
|
||||||
|
put_bits(&pb, 16, 8 + comps * 3); // header size depends on components
|
||||||
|
put_bits(&pb, 8, (avctx->pix_fmt == PIX_FMT_GRAY16) ? 16 : 8); // bpp
|
||||||
|
put_bits(&pb, 16, avctx->height);
|
||||||
|
put_bits(&pb, 16, avctx->width);
|
||||||
|
put_bits(&pb, 8, comps); // components
|
||||||
|
for(i = 1; i <= comps; i++) {
|
||||||
|
put_bits(&pb, 8, i); // component ID
|
||||||
|
put_bits(&pb, 8, 0x11); // subsampling: none
|
||||||
|
put_bits(&pb, 8, 0); // Tiq, used by JPEG-LS ext
|
||||||
|
}
|
||||||
|
|
||||||
|
put_marker(&pb, SOS);
|
||||||
|
put_bits(&pb, 16, 6 + comps * 2);
|
||||||
|
put_bits(&pb, 8, comps);
|
||||||
|
for(i = 1; i <= comps; i++) {
|
||||||
|
put_bits(&pb, 8, i); // component ID
|
||||||
|
put_bits(&pb, 8, 0); // mapping index: none
|
||||||
|
}
|
||||||
|
put_bits(&pb, 8, near);
|
||||||
|
put_bits(&pb, 8, (comps > 1) ? 1 : 0); // interleaving: 0 - plane, 1 - line
|
||||||
|
put_bits(&pb, 8, 0); // point transform: none
|
||||||
|
|
||||||
|
state = av_mallocz(sizeof(JLSState));
|
||||||
|
/* initialize JPEG-LS state from JPEG parameters */
|
||||||
|
state->near = near;
|
||||||
|
state->bpp = (avctx->pix_fmt == PIX_FMT_GRAY16) ? 16 : 8;
|
||||||
|
ff_jpegls_reset_coding_parameters(state, 0);
|
||||||
|
ff_jpegls_init_state(state);
|
||||||
|
|
||||||
|
ls_store_lse(state, &pb);
|
||||||
|
|
||||||
|
zero = av_mallocz(p->linesize[0]);
|
||||||
|
last = zero;
|
||||||
|
cur = p->data[0];
|
||||||
|
if(avctx->pix_fmt == PIX_FMT_GRAY8){
|
||||||
|
int t = 0;
|
||||||
|
|
||||||
|
for(i = 0; i < avctx->height; i++) {
|
||||||
|
ls_encode_line(state, &pb2, last, cur, t, avctx->width, 1, 0, 8);
|
||||||
|
t = last[0];
|
||||||
|
last = cur;
|
||||||
|
cur += p->linesize[0];
|
||||||
|
}
|
||||||
|
}else if(avctx->pix_fmt == PIX_FMT_GRAY16){
|
||||||
|
int t = 0;
|
||||||
|
|
||||||
|
for(i = 0; i < avctx->height; i++) {
|
||||||
|
ls_encode_line(state, &pb2, last, cur, t, avctx->width, 1, 0, 16);
|
||||||
|
t = *((uint16_t*)last);
|
||||||
|
last = cur;
|
||||||
|
cur += p->linesize[0];
|
||||||
|
}
|
||||||
|
}else if(avctx->pix_fmt == PIX_FMT_RGB24){
|
||||||
|
int j, width;
|
||||||
|
int Rc[3] = {0, 0, 0};
|
||||||
|
|
||||||
|
width = avctx->width * 3;
|
||||||
|
for(i = 0; i < avctx->height; i++) {
|
||||||
|
for(j = 0; j < 3; j++) {
|
||||||
|
ls_encode_line(state, &pb2, last + j, cur + j, Rc[j], width, 3, j, 8);
|
||||||
|
Rc[j] = last[j];
|
||||||
|
}
|
||||||
|
last = cur;
|
||||||
|
cur += s->picture.linesize[0];
|
||||||
|
}
|
||||||
|
}else if(avctx->pix_fmt == PIX_FMT_BGR24){
|
||||||
|
int j, width;
|
||||||
|
int Rc[3] = {0, 0, 0};
|
||||||
|
|
||||||
|
width = avctx->width * 3;
|
||||||
|
for(i = 0; i < avctx->height; i++) {
|
||||||
|
for(j = 2; j >= 0; j--) {
|
||||||
|
ls_encode_line(state, &pb2, last + j, cur + j, Rc[j], width, 3, j, 8);
|
||||||
|
Rc[j] = last[j];
|
||||||
|
}
|
||||||
|
last = cur;
|
||||||
|
cur += s->picture.linesize[0];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
av_free(zero);
|
||||||
|
av_free(state);
|
||||||
|
|
||||||
|
// the specification says that after doing 0xff escaping unused bits in the
|
||||||
|
// last byte must be set to 0, so just append 7 "optional" zero-bits to
|
||||||
|
// avoid special-casing.
|
||||||
|
put_bits(&pb2, 7, 0);
|
||||||
|
size = put_bits_count(&pb2);
|
||||||
|
flush_put_bits(&pb2);
|
||||||
|
/* do escape coding */
|
||||||
|
init_get_bits(&gb, buf2, size);
|
||||||
|
size -= 7;
|
||||||
|
while(get_bits_count(&gb) < size){
|
||||||
|
int v;
|
||||||
|
v = get_bits(&gb, 8);
|
||||||
|
put_bits(&pb, 8, v);
|
||||||
|
if(v == 0xFF){
|
||||||
|
v = get_bits(&gb, 7);
|
||||||
|
put_bits(&pb, 8, v);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
align_put_bits(&pb);
|
||||||
|
av_free(buf2);
|
||||||
|
|
||||||
|
/* End of image */
|
||||||
|
put_marker(&pb, EOI);
|
||||||
|
flush_put_bits(&pb);
|
||||||
|
|
||||||
|
emms_c();
|
||||||
|
|
||||||
|
return put_bits_count(&pb) >> 3;
|
||||||
|
}
|
||||||
|
|
||||||
|
static av_cold int encode_init_ls(AVCodecContext *ctx) {
|
||||||
|
JpeglsContext *c = (JpeglsContext*)ctx->priv_data;
|
||||||
|
|
||||||
|
c->avctx = ctx;
|
||||||
|
ctx->coded_frame = &c->picture;
|
||||||
|
|
||||||
|
if(ctx->pix_fmt != PIX_FMT_GRAY8 && ctx->pix_fmt != PIX_FMT_GRAY16 && ctx->pix_fmt != PIX_FMT_RGB24 && ctx->pix_fmt != PIX_FMT_BGR24){
|
||||||
|
av_log(ctx, AV_LOG_ERROR, "Only grayscale and RGB24/BGR24 images are supported\n");
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
AVCodec jpegls_encoder = { //FIXME avoid MPV_* lossless JPEG should not need them
|
||||||
|
"jpegls",
|
||||||
|
CODEC_TYPE_VIDEO,
|
||||||
|
CODEC_ID_JPEGLS,
|
||||||
|
sizeof(JpeglsContext),
|
||||||
|
encode_init_ls,
|
||||||
|
encode_picture_ls,
|
||||||
|
NULL,
|
||||||
|
.pix_fmts= (enum PixelFormat[]){PIX_FMT_BGR24, PIX_FMT_RGB24, PIX_FMT_GRAY8, PIX_FMT_GRAY16, PIX_FMT_NONE},
|
||||||
|
.long_name= NULL_IF_CONFIG_SMALL("JPEG-LS"),
|
||||||
|
};
|
||||||
File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user