/src/libhevc/common/ihevc_recon.c

Source
/******************************************************************************
*
* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/**
 *******************************************************************************
 * @file
 *  ihevc_recon.c
 *
 * @brief
 *  Functions definitions reconstruction
 *
 * @author
 *  Ittiam
 *
 * @par List of Functions:
 *  - ihevc_recon_4x4_ttype1()
 *  - ihevc_recon_4x4()
 *  - ihevc_recon_8x8()
 *  - ihevc_recon_16x16()
 *  - ihevc_recon_32x32()
 *
 * @remarks
 *  None
 *
 *******************************************************************************
 */
#include <stdio.h>
#include <string.h>
#include "ihevc_typedefs.h"
#include "ihevc_macros.h"
#include "ihevc_platform_macros.h"
#include "ihevc_defs.h"
#include "ihevc_trans_tables.h"
#include "ihevc_recon.h"
#include "ihevc_trans_macros.h"

/* All the functions here are replicated from ihevc.c and modified to */
/* include reconstruction */

/**
 *******************************************************************************
 *
 * @brief
 *  This function performs reconstruction for  4x4 input block
 *
 * @par Description:
 *  Performs reconstruction of 4x4 input block by adding  adding prediction
 * data to input and clipping it to 8 bit
 *
 * @param[in] pi2_src
 *  Input 4x4 coefficients
 *
 * @param[in] pu1_pred
 *  Prediction 4x4 block
 *
 * @param[out] pu1_dst
 *  Output 4x4 block
 *
 * @param[in] src_strd
 *  Input stride
 *
 * @param[in] pred_strd
 *  Prediction stride
 *
 * @param[in] dst_strd
 *  Output Stride
 *
 * @param[in] zero_cols
 *  Zero columns in pi2_tmp
 *
 * @returns  Void
 *
 * @remarks
 *  None
 *
 *******************************************************************************
 */

void ihevc_recon_4x4_ttype1(WORD16 *pi2_src,
                            UWORD8 *pu1_pred,
                            UWORD8 *pu1_dst,
                            WORD32 src_strd,
                            WORD32 pred_strd,
                            WORD32 dst_strd,
                            WORD32 zero_cols)
{
    WORD32 i, j;
    WORD32 trans_size;

    trans_size = TRANS_SIZE_4;

    /* Reconstruction */

    for(i = 0; i < trans_size; i++)
    {
        /* Checking for Zero Cols */
        if((zero_cols & 1) == 1)
        {
            for(j = 0; j < trans_size; j++)
            {
                pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd];
            }
        }
        else
        {
            for(j = 0; j < trans_size; j++)
            {
                pu1_dst[j * dst_strd] =
                                CLIP_U8(pi2_src[j * src_strd] + pu1_pred[j * pred_strd]);
            }
        }
        pi2_src++;
        pu1_dst++;
        pu1_pred++;
        zero_cols = zero_cols >> 1;
    }
}

/**
 *******************************************************************************
 *
 * @brief
 *  This function performs reconstruction for  4x4 input block
 *
 * @par Description:
 *  Performs reconstruction of 4x4 input block by adding  adding prediction
 * data to input and clipping it to 8 bit
 *
 * @param[in] pi2_src
 *  Input 4x4 coefficients
 *
 * @param[in] pu1_pred
 *  Prediction 4x4 block
 *
 * @param[out] pu1_dst
 *  Output 4x4 block
 *
 * @param[in] src_strd
 *  Input stride
 *
 * @param[in] pred_strd
 *  Prediction stride
 *
 * @param[in] dst_strd
 *  Output Stride
 *
 * @param[in] shift
 *  Output shift
 *
 * @param[in] zero_cols
 *  Zero columns in pi2_tmp
 *
 * @returns  Void
 *
 * @remarks
 *  None
 *
 *******************************************************************************
 */

void ihevc_recon_4x4(WORD16 *pi2_src,
                     UWORD8 *pu1_pred,
                     UWORD8 *pu1_dst,
                     WORD32 src_strd,
                     WORD32 pred_strd,
                     WORD32 dst_strd,
                     WORD32 zero_cols)
{
    WORD32 i, j;
    WORD32 trans_size;

    trans_size = TRANS_SIZE_4;

    /* Reconstruction */

    for(i = 0; i < trans_size; i++)
    {
        /* Checking for Zero Cols */
        if((zero_cols & 1) == 1)
        {
            for(j = 0; j < trans_size; j++)
            {
                pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd];
            }
        }
        else
        {
            for(j = 0; j < trans_size; j++)
            {
                pu1_dst[j * dst_strd] =
                                CLIP_U8(pi2_src[j * src_strd] + pu1_pred[j * pred_strd]);
            }
        }
        pi2_src++;
        pu1_dst++;
        pu1_pred++;
        zero_cols = zero_cols >> 1;
    }
}

/**
 *******************************************************************************
 *
 * @brief
 *  This function performs reconstruction for  8x8 input block
 *
 * @par Description:
 *  Performs reconstruction of 8x8 input block by adding  adding prediction
 * data to input and clipping it to 8 bit
 *
 * @param[in] pi2_src
 *  Input 8x8 coefficients
 *
 * @param[in] pu1_pred
 *  Prediction 8x8 block
 *
 * @param[out] pu1_dst
 *  Output 8x8 block
 *
 * @param[in] src_strd
 *  Input stride
 *
 * @param[in] pred_strd
 *  Prediction stride
 *
 * @param[in] dst_strd
 *  Output Stride
 *
 * @param[in] shift
 *  Output shift
 *
 * @param[in] zero_cols
 *  Zero columns in pi2_tmp
 *
 * @returns  Void
 *
 * @remarks
 *  None
 *
 *******************************************************************************
 */

void ihevc_recon_8x8(WORD16 *pi2_src,
                     UWORD8 *pu1_pred,
                     UWORD8 *pu1_dst,
                     WORD32 src_strd,
                     WORD32 pred_strd,
                     WORD32 dst_strd,
                     WORD32 zero_cols)
{
    WORD32 i, j;
    WORD32 trans_size;

    trans_size = TRANS_SIZE_8;

    /* Reconstruction */

    for(i = 0; i < trans_size; i++)
    {
        /* Checking for Zero Cols */
        if((zero_cols & 1) == 1)
        {
            for(j = 0; j < trans_size; j++)
            {
                pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd];
            }
        }
        else
        {
            for(j = 0; j < trans_size; j++)
            {
                pu1_dst[j * dst_strd] =
                                CLIP_U8(pi2_src[j * src_strd] + pu1_pred[j * pred_strd]);
            }
        }
        pi2_src++;
        pu1_dst++;
        pu1_pred++;
        zero_cols = zero_cols >> 1;
    }
}

/**
 *******************************************************************************
 *
 * @brief
 *  This function performs reconstruction for  16x16 input block
 *
 * @par Description:
 *  Performs reconstruction of 16x16 input block by adding  adding prediction
 * data to input and clipping it to 8 bit
 *
 * @param[in] pi2_src
 *  Input 16x16 coefficients
 *
 * @param[in] pu1_pred
 *  Prediction 16x16 block
 *
 * @param[out] pu1_dst
 *  Output 16x16 block
 *
 * @param[in] src_strd
 *  Input stride
 *
 * @param[in] pred_strd
 *  Prediction stride
 *
 * @param[in] dst_strd
 *  Output Stride
 *
 * @param[in] shift
 *  Output shift
 *
 * @param[in] zero_cols
 *  Zero columns in pi2_tmp
 *
 * @returns  Void
 *
 * @remarks
 *  None
 *
 *******************************************************************************
 */

void ihevc_recon_16x16(WORD16 *pi2_src,
                       UWORD8 *pu1_pred,
                       UWORD8 *pu1_dst,
                       WORD32 src_strd,
                       WORD32 pred_strd,
                       WORD32 dst_strd,
                       WORD32 zero_cols)
{
    WORD32 i, j;
    WORD32 trans_size;

    trans_size = TRANS_SIZE_16;

    /* Reconstruction */

    for(i = 0; i < trans_size; i++)
    {
        /* Checking for Zero Cols */
        if((zero_cols & 1) == 1)
        {
            for(j = 0; j < trans_size; j++)
            {
                pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd];
            }
        }
        else
        {
            for(j = 0; j < trans_size; j++)
            {
                pu1_dst[j * dst_strd] =
                                CLIP_U8(pi2_src[j * src_strd] + pu1_pred[j * pred_strd]);
            }
        }
        pi2_src++;
        pu1_dst++;
        pu1_pred++;
        zero_cols = zero_cols >> 1;
    }
}

/**
 *******************************************************************************
 *
 * @brief
 *  This function performs reconstruction for  32x32 input block
 *
 * @par Description:
 *  Performs reconstruction of 32x32 input block by adding  adding prediction
 * data to input and clipping it to 8 bit
 *
 * @param[in] pi2_src
 *  Input 32x32 coefficients
 *
 * @param[in] pu1_pred
 *  Prediction 32x32 block
 *
 * @param[out] pu1_dst
 *  Output 32x32 block
 *
 * @param[in] src_strd
 *  Input stride
 *
 * @param[in] pred_strd
 *  Prediction stride
 *
 * @param[in] dst_strd
 *  Output Stride
 *
 * @param[in] shift
 *  Output shift
 *
 * @param[in] zero_cols
 *  Zero columns in pi2_tmp
 *
 * @returns  Void
 *
 * @remarks
 *  None
 *
 *******************************************************************************
 */

void ihevc_recon_32x32(WORD16 *pi2_src,
                       UWORD8 *pu1_pred,
                       UWORD8 *pu1_dst,
                       WORD32 src_strd,
                       WORD32 pred_strd,
                       WORD32 dst_strd,
                       WORD32 zero_cols)
{
    WORD32 i, j;
    WORD32 trans_size;

    trans_size = TRANS_SIZE_32;

    /* Reconstruction */

    for(i = 0; i < trans_size; i++)
    {
        /* Checking for Zero Cols */
        if((zero_cols & 1) == 1)
        {
            for(j = 0; j < trans_size; j++)
            {
                pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd];
            }
        }
        else
        {
            for(j = 0; j < trans_size; j++)
            {
                pu1_dst[j * dst_strd] =
                                CLIP_U8(pi2_src[j * src_strd] + pu1_pred[j * pred_strd]);
            }
        }
        pi2_src++;
        pu1_dst++;
        pu1_pred++;
        zero_cols = zero_cols >> 1;
    }
}


Coverage Report

Created: 2026-08-13 06:09

Line	Count	Source
1		/******************************************************************************
2		*
3		* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
4		*
5		* Licensed under the Apache License, Version 2.0 (the "License");
6		* you may not use this file except in compliance with the License.
7		* You may obtain a copy of the License at:
8		*
9		* http://www.apache.org/licenses/LICENSE-2.0
10		*
11		* Unless required by applicable law or agreed to in writing, software
12		* distributed under the License is distributed on an "AS IS" BASIS,
13		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14		* See the License for the specific language governing permissions and
15		* limitations under the License.
16		*
17		******************************************************************************/
18		/**
19		*******************************************************************************
20		* @file
21		* ihevc_recon.c
22		*
23		* @brief
24		* Functions definitions reconstruction
25		*
26		* @author
27		* Ittiam
28		*
29		* @par List of Functions:
30		* - ihevc_recon_4x4_ttype1()
31		* - ihevc_recon_4x4()
32		* - ihevc_recon_8x8()
33		* - ihevc_recon_16x16()
34		* - ihevc_recon_32x32()
35		*
36		* @remarks
37		* None
38		*
39		*******************************************************************************
40		*/
41		#include <stdio.h>
42		#include <string.h>
43		#include "ihevc_typedefs.h"
44		#include "ihevc_macros.h"
45		#include "ihevc_platform_macros.h"
46		#include "ihevc_defs.h"
47		#include "ihevc_trans_tables.h"
48		#include "ihevc_recon.h"
49		#include "ihevc_trans_macros.h"
50
51		/* All the functions here are replicated from ihevc.c and modified to */
52		/* include reconstruction */
53
54		/**
55		*******************************************************************************
56		*
57		* @brief
58		* This function performs reconstruction for 4x4 input block
59		*
60		* @par Description:
61		* Performs reconstruction of 4x4 input block by adding adding prediction
62		* data to input and clipping it to 8 bit
63		*
64		* @param[in] pi2_src
65		* Input 4x4 coefficients
66		*
67		* @param[in] pu1_pred
68		* Prediction 4x4 block
69		*
70		* @param[out] pu1_dst
71		* Output 4x4 block
72		*
73		* @param[in] src_strd
74		* Input stride
75		*
76		* @param[in] pred_strd
77		* Prediction stride
78		*
79		* @param[in] dst_strd
80		* Output Stride
81		*
82		* @param[in] zero_cols
83		* Zero columns in pi2_tmp
84		*
85		* @returns Void
86		*
87		* @remarks
88		* None
89		*
90		*******************************************************************************
91		*/
92
93		void ihevc_recon_4x4_ttype1(WORD16 *pi2_src,
94		UWORD8 *pu1_pred,
95		UWORD8 *pu1_dst,
96		WORD32 src_strd,
97		WORD32 pred_strd,
98		WORD32 dst_strd,
99		WORD32 zero_cols)
100	0	{
101	0	WORD32 i, j;
102	0	WORD32 trans_size;
103
104	0	trans_size = TRANS_SIZE_4;
105
106		/* Reconstruction */
107
108	0	for(i = 0; i < trans_size; i++)
109	0	{
110		/* Checking for Zero Cols */
111	0	if((zero_cols & 1) == 1)
112	0	{
113	0	for(j = 0; j < trans_size; j++)
114	0	{
115	0	pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd];
116	0	}
117	0	}
118	0	else
119	0	{
120	0	for(j = 0; j < trans_size; j++)
121	0	{
122	0	pu1_dst[j * dst_strd] =
123	0	CLIP_U8(pi2_src[j * src_strd] + pu1_pred[j * pred_strd]);
124	0	}
125	0	}
126	0	pi2_src++;
127	0	pu1_dst++;
128	0	pu1_pred++;
129	0	zero_cols = zero_cols >> 1;
130	0	}
131	0	}
132
133		/**
134		*******************************************************************************
135		*
136		* @brief
137		* This function performs reconstruction for 4x4 input block
138		*
139		* @par Description:
140		* Performs reconstruction of 4x4 input block by adding adding prediction
141		* data to input and clipping it to 8 bit
142		*
143		* @param[in] pi2_src
144		* Input 4x4 coefficients
145		*
146		* @param[in] pu1_pred
147		* Prediction 4x4 block
148		*
149		* @param[out] pu1_dst
150		* Output 4x4 block
151		*
152		* @param[in] src_strd
153		* Input stride
154		*
155		* @param[in] pred_strd
156		* Prediction stride
157		*
158		* @param[in] dst_strd
159		* Output Stride
160		*
161		* @param[in] shift
162		* Output shift
163		*
164		* @param[in] zero_cols
165		* Zero columns in pi2_tmp
166		*
167		* @returns Void
168		*
169		* @remarks
170		* None
171		*
172		*******************************************************************************
173		*/
174
175		void ihevc_recon_4x4(WORD16 *pi2_src,
176		UWORD8 *pu1_pred,
177		UWORD8 *pu1_dst,
178		WORD32 src_strd,
179		WORD32 pred_strd,
180		WORD32 dst_strd,
181		WORD32 zero_cols)
182	0	{
183	0	WORD32 i, j;
184	0	WORD32 trans_size;
185
186	0	trans_size = TRANS_SIZE_4;
187
188		/* Reconstruction */
189
190	0	for(i = 0; i < trans_size; i++)
191	0	{
192		/* Checking for Zero Cols */
193	0	if((zero_cols & 1) == 1)
194	0	{
195	0	for(j = 0; j < trans_size; j++)
196	0	{
197	0	pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd];
198	0	}
199	0	}
200	0	else
201	0	{
202	0	for(j = 0; j < trans_size; j++)
203	0	{
204	0	pu1_dst[j * dst_strd] =
205	0	CLIP_U8(pi2_src[j * src_strd] + pu1_pred[j * pred_strd]);
206	0	}
207	0	}
208	0	pi2_src++;
209	0	pu1_dst++;
210	0	pu1_pred++;
211	0	zero_cols = zero_cols >> 1;
212	0	}
213	0	}
214
215		/**
216		*******************************************************************************
217		*
218		* @brief
219		* This function performs reconstruction for 8x8 input block
220		*
221		* @par Description:
222		* Performs reconstruction of 8x8 input block by adding adding prediction
223		* data to input and clipping it to 8 bit
224		*
225		* @param[in] pi2_src
226		* Input 8x8 coefficients
227		*
228		* @param[in] pu1_pred
229		* Prediction 8x8 block
230		*
231		* @param[out] pu1_dst
232		* Output 8x8 block
233		*
234		* @param[in] src_strd
235		* Input stride
236		*
237		* @param[in] pred_strd
238		* Prediction stride
239		*
240		* @param[in] dst_strd
241		* Output Stride
242		*
243		* @param[in] shift
244		* Output shift
245		*
246		* @param[in] zero_cols
247		* Zero columns in pi2_tmp
248		*
249		* @returns Void
250		*
251		* @remarks
252		* None
253		*
254		*******************************************************************************
255		*/
256
257		void ihevc_recon_8x8(WORD16 *pi2_src,
258		UWORD8 *pu1_pred,
259		UWORD8 *pu1_dst,
260		WORD32 src_strd,
261		WORD32 pred_strd,
262		WORD32 dst_strd,
263		WORD32 zero_cols)
264	0	{
265	0	WORD32 i, j;
266	0	WORD32 trans_size;
267
268	0	trans_size = TRANS_SIZE_8;
269
270		/* Reconstruction */
271
272	0	for(i = 0; i < trans_size; i++)
273	0	{
274		/* Checking for Zero Cols */
275	0	if((zero_cols & 1) == 1)
276	0	{
277	0	for(j = 0; j < trans_size; j++)
278	0	{
279	0	pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd];
280	0	}
281	0	}
282	0	else
283	0	{
284	0	for(j = 0; j < trans_size; j++)
285	0	{
286	0	pu1_dst[j * dst_strd] =
287	0	CLIP_U8(pi2_src[j * src_strd] + pu1_pred[j * pred_strd]);
288	0	}
289	0	}
290	0	pi2_src++;
291	0	pu1_dst++;
292	0	pu1_pred++;
293	0	zero_cols = zero_cols >> 1;
294	0	}
295	0	}
296
297		/**
298		*******************************************************************************
299		*
300		* @brief
301		* This function performs reconstruction for 16x16 input block
302		*
303		* @par Description:
304		* Performs reconstruction of 16x16 input block by adding adding prediction
305		* data to input and clipping it to 8 bit
306		*
307		* @param[in] pi2_src
308		* Input 16x16 coefficients
309		*
310		* @param[in] pu1_pred
311		* Prediction 16x16 block
312		*
313		* @param[out] pu1_dst
314		* Output 16x16 block
315		*
316		* @param[in] src_strd
317		* Input stride
318		*
319		* @param[in] pred_strd
320		* Prediction stride
321		*
322		* @param[in] dst_strd
323		* Output Stride
324		*
325		* @param[in] shift
326		* Output shift
327		*
328		* @param[in] zero_cols
329		* Zero columns in pi2_tmp
330		*
331		* @returns Void
332		*
333		* @remarks
334		* None
335		*
336		*******************************************************************************
337		*/
338
339		void ihevc_recon_16x16(WORD16 *pi2_src,
340		UWORD8 *pu1_pred,
341		UWORD8 *pu1_dst,
342		WORD32 src_strd,
343		WORD32 pred_strd,
344		WORD32 dst_strd,
345		WORD32 zero_cols)
346	0	{
347	0	WORD32 i, j;
348	0	WORD32 trans_size;
349
350	0	trans_size = TRANS_SIZE_16;
351
352		/* Reconstruction */
353
354	0	for(i = 0; i < trans_size; i++)
355	0	{
356		/* Checking for Zero Cols */
357	0	if((zero_cols & 1) == 1)
358	0	{
359	0	for(j = 0; j < trans_size; j++)
360	0	{
361	0	pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd];
362	0	}
363	0	}
364	0	else
365	0	{
366	0	for(j = 0; j < trans_size; j++)
367	0	{
368	0	pu1_dst[j * dst_strd] =
369	0	CLIP_U8(pi2_src[j * src_strd] + pu1_pred[j * pred_strd]);
370	0	}
371	0	}
372	0	pi2_src++;
373	0	pu1_dst++;
374	0	pu1_pred++;
375	0	zero_cols = zero_cols >> 1;
376	0	}
377	0	}
378
379		/**
380		*******************************************************************************
381		*
382		* @brief
383		* This function performs reconstruction for 32x32 input block
384		*
385		* @par Description:
386		* Performs reconstruction of 32x32 input block by adding adding prediction
387		* data to input and clipping it to 8 bit
388		*
389		* @param[in] pi2_src
390		* Input 32x32 coefficients
391		*
392		* @param[in] pu1_pred
393		* Prediction 32x32 block
394		*
395		* @param[out] pu1_dst
396		* Output 32x32 block
397		*
398		* @param[in] src_strd
399		* Input stride
400		*
401		* @param[in] pred_strd
402		* Prediction stride
403		*
404		* @param[in] dst_strd
405		* Output Stride
406		*
407		* @param[in] shift
408		* Output shift
409		*
410		* @param[in] zero_cols
411		* Zero columns in pi2_tmp
412		*
413		* @returns Void
414		*
415		* @remarks
416		* None
417		*
418		*******************************************************************************
419		*/
420
421		void ihevc_recon_32x32(WORD16 *pi2_src,
422		UWORD8 *pu1_pred,
423		UWORD8 *pu1_dst,
424		WORD32 src_strd,
425		WORD32 pred_strd,
426		WORD32 dst_strd,
427		WORD32 zero_cols)
428	0	{
429	0	WORD32 i, j;
430	0	WORD32 trans_size;
431
432	0	trans_size = TRANS_SIZE_32;
433
434		/* Reconstruction */
435
436	0	for(i = 0; i < trans_size; i++)
437	0	{
438		/* Checking for Zero Cols */
439	0	if((zero_cols & 1) == 1)
440	0	{
441	0	for(j = 0; j < trans_size; j++)
442	0	{
443	0	pu1_dst[j * dst_strd] = pu1_pred[j * pred_strd];
444	0	}
445	0	}
446	0	else
447	0	{
448	0	for(j = 0; j < trans_size; j++)
449	0	{
450	0	pu1_dst[j * dst_strd] =
451	0	CLIP_U8(pi2_src[j * src_strd] + pu1_pred[j * pred_strd]);
452	0	}
453	0	}
454	0	pi2_src++;
455	0	pu1_dst++;
456	0	pu1_pred++;
457	0	zero_cols = zero_cols >> 1;
458	0	}
459	0	}
460