FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/rv30.c	Lines:	151	174	86.8 %
Date:	2021-01-26 01:16:58	Branches:	117	132	88.6 %


/*
 * RV30 decoder
 * Copyright (c) 2007 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
 * RV30 decoder
 */

#include "avcodec.h"
#include "mpegutils.h"
#include "mpegvideo.h"
#include "golomb.h"

#include "rv34.h"
#include "rv30data.h"


static int rv30_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si)
{
    AVCodecContext *avctx = r->s.avctx;
    int mb_bits;
    int w = r->s.width, h = r->s.height;
    int mb_size;
    int rpr;

    memset(si, 0, sizeof(SliceInfo));
    if(get_bits(gb, 3))
        return -1;
    si->type = get_bits(gb, 2);
    if(si->type == 1) si->type = 0;
    if(get_bits1(gb))
        return -1;
    si->quant = get_bits(gb, 5);
    skip_bits1(gb);
    si->pts = get_bits(gb, 13);
    rpr = get_bits(gb, av_log2(r->max_rpr) + 1);
    if(rpr){
        if (rpr > r->max_rpr) {
            av_log(avctx, AV_LOG_ERROR, "rpr too large\n");
            return AVERROR_INVALIDDATA;
        }

        if (avctx->extradata_size < rpr * 2 + 8) {
            av_log(avctx, AV_LOG_ERROR,
                   "Insufficient extradata - need at least %d bytes, got %d\n",
                   8 + rpr * 2, avctx->extradata_size);
            return AVERROR(EINVAL);
        }

        w = r->s.avctx->extradata[6 + rpr*2] << 2;
        h = r->s.avctx->extradata[7 + rpr*2] << 2;
    } else {
        w = r->orig_width;
        h = r->orig_height;
    }
    si->width  = w;
    si->height = h;
    mb_size = ((w + 15) >> 4) * ((h + 15) >> 4);
    mb_bits = ff_rv34_get_start_offset(gb, mb_size);
    si->start = get_bits(gb, mb_bits);
    skip_bits1(gb);
    return 0;
}

/**
 * Decode 4x4 intra types array.
 */
static int rv30_decode_intra_types(RV34DecContext *r, GetBitContext *gb, int8_t *dst)
{
    int i, j, k;

    for(i = 0; i < 4; i++, dst += r->intra_types_stride - 4){
        for(j = 0; j < 4; j+= 2){
            unsigned code = get_interleaved_ue_golomb(gb) << 1;
            if (code > 80U*2U) {
                av_log(r->s.avctx, AV_LOG_ERROR, "Incorrect intra prediction code\n");
                return -1;
            }
            for(k = 0; k < 2; k++){
                int A = dst[-r->intra_types_stride] + 1;
                int B = dst[-1] + 1;
                *dst++ = rv30_itype_from_context[A * 90 + B * 9 + rv30_itype_code[code + k]];
                if(dst[-1] == 9){
                    av_log(r->s.avctx, AV_LOG_ERROR, "Incorrect intra prediction mode\n");
                    return -1;
                }
            }
        }
    }
    return 0;
}

/**
 * Decode macroblock information.
 */
static int rv30_decode_mb_info(RV34DecContext *r)
{
    static const int rv30_p_types[6] = { RV34_MB_SKIP, RV34_MB_P_16x16, RV34_MB_P_8x8, -1, RV34_MB_TYPE_INTRA, RV34_MB_TYPE_INTRA16x16 };
    static const int rv30_b_types[6] = { RV34_MB_SKIP, RV34_MB_B_DIRECT, RV34_MB_B_FORWARD, RV34_MB_B_BACKWARD, RV34_MB_TYPE_INTRA, RV34_MB_TYPE_INTRA16x16 };
    MpegEncContext *s = &r->s;
    GetBitContext *gb = &s->gb;
    unsigned code = get_interleaved_ue_golomb(gb);

    if (code > 11) {
        av_log(s->avctx, AV_LOG_ERROR, "Incorrect MB type code\n");
        return -1;
    }
    if(code > 5){
        av_log(s->avctx, AV_LOG_ERROR, "dquant needed\n");
        code -= 6;
    }
    if(s->pict_type != AV_PICTURE_TYPE_B)
        return rv30_p_types[code];
    else
        return rv30_b_types[code];
}

static inline void rv30_weak_loop_filter(uint8_t *src, const int step,
                                         const int stride, const int lim)
{
    const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
    int i, diff;

    for(i = 0; i < 4; i++){
        diff = ((src[-2*step] - src[1*step]) - (src[-1*step] - src[0*step])*4) >> 3;
        diff = av_clip(diff, -lim, lim);
        src[-1*step] = cm[src[-1*step] + diff];
        src[ 0*step] = cm[src[ 0*step] - diff];
        src += stride;
    }
}

static void rv30_loop_filter(RV34DecContext *r, int row)
{
    MpegEncContext *s = &r->s;
    int mb_pos, mb_x;
    int i, j, k;
    uint8_t *Y, *C;
    int loc_lim, cur_lim, left_lim = 0, top_lim = 0;

    mb_pos = row * s->mb_stride;
    for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
        int mbtype = s->current_picture_ptr->mb_type[mb_pos];
        if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype))
            r->deblock_coefs[mb_pos] = 0xFFFF;
        if(IS_INTRA(mbtype))
            r->cbp_chroma[mb_pos] = 0xFF;
    }

    /* all vertical edges are filtered first
     * and horizontal edges are filtered on the next iteration
     */
    mb_pos = row * s->mb_stride;
    for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
        cur_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos]];
        if(mb_x)
            left_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos - 1]];
        for(j = 0; j < 16; j += 4){
            Y = s->current_picture_ptr->f->data[0] + mb_x*16 + (row*16 + j) * s->linesize + 4 * !mb_x;
            for(i = !mb_x; i < 4; i++, Y += 4){
                int ij = i + j;
                loc_lim = 0;
                if(r->deblock_coefs[mb_pos] & (1 << ij))
                    loc_lim = cur_lim;
                else if(!i && r->deblock_coefs[mb_pos - 1] & (1 << (ij + 3)))
                    loc_lim = left_lim;
                else if( i && r->deblock_coefs[mb_pos]     & (1 << (ij - 1)))
                    loc_lim = cur_lim;
                if(loc_lim)
                    rv30_weak_loop_filter(Y, 1, s->linesize, loc_lim);
            }
        }
        for(k = 0; k < 2; k++){
            int cur_cbp, left_cbp = 0;
            cur_cbp = (r->cbp_chroma[mb_pos] >> (k*4)) & 0xF;
            if(mb_x)
                left_cbp = (r->cbp_chroma[mb_pos - 1] >> (k*4)) & 0xF;
            for(j = 0; j < 8; j += 4){
                C = s->current_picture_ptr->f->data[k + 1] + mb_x*8 + (row*8 + j) * s->uvlinesize + 4 * !mb_x;
                for(i = !mb_x; i < 2; i++, C += 4){
                    int ij = i + (j >> 1);
                    loc_lim = 0;
                    if (cur_cbp & (1 << ij))
                        loc_lim = cur_lim;
                    else if(!i && left_cbp & (1 << (ij + 1)))
                        loc_lim = left_lim;
                    else if( i && cur_cbp  & (1 << (ij - 1)))
                        loc_lim = cur_lim;
                    if(loc_lim)
                        rv30_weak_loop_filter(C, 1, s->uvlinesize, loc_lim);
                }
            }
        }
    }
    mb_pos = row * s->mb_stride;
    for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
        cur_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos]];
        if(row)
            top_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos - s->mb_stride]];
        for(j = 4*!row; j < 16; j += 4){
            Y = s->current_picture_ptr->f->data[0] + mb_x*16 + (row*16 + j) * s->linesize;
            for(i = 0; i < 4; i++, Y += 4){
                int ij = i + j;
                loc_lim = 0;
                if(r->deblock_coefs[mb_pos] & (1 << ij))
                    loc_lim = cur_lim;
                else if(!j && r->deblock_coefs[mb_pos - s->mb_stride] & (1 << (ij + 12)))
                    loc_lim = top_lim;
                else if( j && r->deblock_coefs[mb_pos]                & (1 << (ij - 4)))
                    loc_lim = cur_lim;
                if(loc_lim)
                    rv30_weak_loop_filter(Y, s->linesize, 1, loc_lim);
            }
        }
        for(k = 0; k < 2; k++){
            int cur_cbp, top_cbp = 0;
            cur_cbp = (r->cbp_chroma[mb_pos] >> (k*4)) & 0xF;
            if(row)
                top_cbp = (r->cbp_chroma[mb_pos - s->mb_stride] >> (k*4)) & 0xF;
            for(j = 4*!row; j < 8; j += 4){
                C = s->current_picture_ptr->f->data[k+1] + mb_x*8 + (row*8 + j) * s->uvlinesize;
                for(i = 0; i < 2; i++, C += 4){
                    int ij = i + (j >> 1);
                    loc_lim = 0;
                    if (r->cbp_chroma[mb_pos] & (1 << ij))
                        loc_lim = cur_lim;
                    else if(!j && top_cbp & (1 << (ij + 2)))
                        loc_lim = top_lim;
                    else if( j && cur_cbp & (1 << (ij - 2)))
                        loc_lim = cur_lim;
                    if(loc_lim)
                        rv30_weak_loop_filter(C, s->uvlinesize, 1, loc_lim);
                }
            }
        }
    }
}

/**
 * Initialize decoder.
 */
static av_cold int rv30_decode_init(AVCodecContext *avctx)
{
    RV34DecContext *r = avctx->priv_data;
    int ret;

    r->orig_width  = avctx->coded_width;
    r->orig_height = avctx->coded_height;

    if (avctx->extradata_size < 2) {
        av_log(avctx, AV_LOG_ERROR, "Extradata is too small.\n");
        return AVERROR(EINVAL);
    }
    r->rv30 = 1;
    if ((ret = ff_rv34_decode_init(avctx)) < 0)
        return ret;

    r->max_rpr = avctx->extradata[1] & 7;
    if(avctx->extradata_size < 2*r->max_rpr + 8){
        av_log(avctx, AV_LOG_WARNING, "Insufficient extradata - need at least %d bytes, got %d\n",
               2*r->max_rpr + 8, avctx->extradata_size);
    }

    r->parse_slice_header = rv30_parse_slice_header;
    r->decode_intra_types = rv30_decode_intra_types;
    r->decode_mb_info     = rv30_decode_mb_info;
    r->loop_filter        = rv30_loop_filter;
    r->luma_dc_quant_i = rv30_luma_dc_quant;
    r->luma_dc_quant_p = rv30_luma_dc_quant;
    return 0;
}

AVCodec ff_rv30_decoder = {
    .name                  = "rv30",
    .long_name             = NULL_IF_CONFIG_SMALL("RealVideo 3.0"),
    .type                  = AVMEDIA_TYPE_VIDEO,
    .id                    = AV_CODEC_ID_RV30,
    .priv_data_size        = sizeof(RV34DecContext),
    .init                  = rv30_decode_init,
    .close                 = ff_rv34_decode_end,
    .decode                = ff_rv34_decode_frame,
    .capabilities          = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
                             AV_CODEC_CAP_FRAME_THREADS,
    .flush                 = ff_mpeg_flush,
    .pix_fmts              = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_YUV420P,
        AV_PIX_FMT_NONE
    },
    .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_update_thread_context),
    .caps_internal         = FF_CODEC_CAP_ALLOCATE_PROGRESS,
};


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* RV30 decoder
3			* Copyright (c) 2007 Konstantin Shishkov
4			*
5			* This file is part of FFmpeg.
6			*
7			* FFmpeg is free software; you can redistribute it and/or
8			* modify it under the terms of the GNU Lesser General Public
9			* License as published by the Free Software Foundation; either
10			* version 2.1 of the License, or (at your option) any later version.
11			*
12			* FFmpeg is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15			* Lesser General Public License for more details.
16			*
17			* You should have received a copy of the GNU Lesser General Public
18			* License along with FFmpeg; if not, write to the Free Software
19			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20			*/
21
22			/**
23			* @file
24			* RV30 decoder
25			*/
26
27			#include "avcodec.h"
28			#include "mpegutils.h"
29			#include "mpegvideo.h"
30			#include "golomb.h"
31
32			#include "rv34.h"
33			#include "rv30data.h"
34
35
36		707	static int rv30_parse_slice_header(RV34DecContext r, GetBitContext gb, SliceInfo *si)
37			{
38		707	AVCodecContext *avctx = r->s.avctx;
39			int mb_bits;
40		707	int w = r->s.width, h = r->s.height;
41			int mb_size;
42			int rpr;
43
44		707	memset(si, 0, sizeof(SliceInfo));
45	✓✓	707	if(get_bits(gb, 3))
46		1	return -1;
47		706	si->type = get_bits(gb, 2);
48	✗✓	706	if(si->type == 1) si->type = 0;
49	✗✓	706	if(get_bits1(gb))
50			return -1;
51		706	si->quant = get_bits(gb, 5);
52		706	skip_bits1(gb);
53		706	si->pts = get_bits(gb, 13);
54		706	rpr = get_bits(gb, av_log2(r->max_rpr) + 1);
55	✗✓	706	if(rpr){
56			if (rpr > r->max_rpr) {
57			av_log(avctx, AV_LOG_ERROR, "rpr too large\n");
58			return AVERROR_INVALIDDATA;
59			}
60
61			if (avctx->extradata_size < rpr * 2 + 8) {
62			av_log(avctx, AV_LOG_ERROR,
63			"Insufficient extradata - need at least %d bytes, got %d\n",
64			8 + rpr * 2, avctx->extradata_size);
65			return AVERROR(EINVAL);
66			}
67
68			w = r->s.avctx->extradata[6 + rpr*2] << 2;
69			h = r->s.avctx->extradata[7 + rpr*2] << 2;
70			} else {
71		706	w = r->orig_width;
72		706	h = r->orig_height;
73			}
74		706	si->width = w;
75		706	si->height = h;
76		706	mb_size = ((w + 15) >> 4) * ((h + 15) >> 4);
77		706	mb_bits = ff_rv34_get_start_offset(gb, mb_size);
78		706	si->start = get_bits(gb, mb_bits);
79		706	skip_bits1(gb);
80		706	return 0;
81			}
82
83			/**
84			* Decode 4x4 intra types array.
85			*/
86		2739	static int rv30_decode_intra_types(RV34DecContext r, GetBitContext gb, int8_t *dst)
87			{
88			int i, j, k;
89
90	✓✓	13695	for(i = 0; i < 4; i++, dst += r->intra_types_stride - 4){
91	✓✓	32868	for(j = 0; j < 4; j+= 2){
92		21912	unsigned code = get_interleaved_ue_golomb(gb) << 1;
93	✗✓	21912	if (code > 80U*2U) {
94			av_log(r->s.avctx, AV_LOG_ERROR, "Incorrect intra prediction code\n");
95			return -1;
96			}
97	✓✓	65736	for(k = 0; k < 2; k++){
98		43824	int A = dst[-r->intra_types_stride] + 1;
99		43824	int B = dst[-1] + 1;
100		43824	dst++ = rv30_itype_from_context[A 90 + B * 9 + rv30_itype_code[code + k]];
101	✗✓	43824	if(dst[-1] == 9){
102			av_log(r->s.avctx, AV_LOG_ERROR, "Incorrect intra prediction mode\n");
103			return -1;
104			}
105			}
106			}
107			}
108		2739	return 0;
109			}
110
111			/**
112			* Decode macroblock information.
113			*/
114		68640	static int rv30_decode_mb_info(RV34DecContext *r)
115			{
116			static const int rv30_p_types[6] = { RV34_MB_SKIP, RV34_MB_P_16x16, RV34_MB_P_8x8, -1, RV34_MB_TYPE_INTRA, RV34_MB_TYPE_INTRA16x16 };
117			static const int rv30_b_types[6] = { RV34_MB_SKIP, RV34_MB_B_DIRECT, RV34_MB_B_FORWARD, RV34_MB_B_BACKWARD, RV34_MB_TYPE_INTRA, RV34_MB_TYPE_INTRA16x16 };
118		68640	MpegEncContext *s = &r->s;
119		68640	GetBitContext *gb = &s->gb;
120		68640	unsigned code = get_interleaved_ue_golomb(gb);
121
122	✗✓	68640	if (code > 11) {
123			av_log(s->avctx, AV_LOG_ERROR, "Incorrect MB type code\n");
124			return -1;
125			}
126	✗✓	68640	if(code > 5){
127			av_log(s->avctx, AV_LOG_ERROR, "dquant needed\n");
128			code -= 6;
129			}
130	✓✓	68640	if(s->pict_type != AV_PICTURE_TYPE_B)
131		15180	return rv30_p_types[code];
132			else
133		53460	return rv30_b_types[code];
134			}
135
136		1048204	static inline void rv30_weak_loop_filter(uint8_t *src, const int step,
137			const int stride, const int lim)
138			{
139		1048204	const uint8_t *cm = ff_crop_tab + MAX_NEG_CROP;
140			int i, diff;
141
142	✓✓	5241020	for(i = 0; i < 4; i++){
143		4192816	diff = ((src[-2step] - src[1step]) - (src[-1step] - src[0step])*4) >> 3;
144		4192816	diff = av_clip(diff, -lim, lim);
145		4192816	src[-1step] = cm[src[-1step] + diff];
146		4192816	src[ 0step] = cm[src[ 0step] - diff];
147		4192816	src += stride;
148			}
149		1048204	}
150
151		3308	static void rv30_loop_filter(RV34DecContext *r, int row)
152			{
153		3308	MpegEncContext *s = &r->s;
154			int mb_pos, mb_x;
155			int i, j, k;
156			uint8_t Y, C;
157		3308	int loc_lim, cur_lim, left_lim = 0, top_lim = 0;
158
159		3308	mb_pos = row * s->mb_stride;
160	✓✓	75988	for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
161		72680	int mbtype = s->current_picture_ptr->mb_type[mb_pos];
162	✓✓✗✓	72680	if(IS_INTRA(mbtype) \|\| IS_SEPARATE_DC(mbtype))
163		9106	r->deblock_coefs[mb_pos] = 0xFFFF;
164	✓✓	72680	if(IS_INTRA(mbtype))
165		9106	r->cbp_chroma[mb_pos] = 0xFF;
166			}
167
168			/* all vertical edges are filtered first
169			* and horizontal edges are filtered on the next iteration
170			*/
171		3308	mb_pos = row * s->mb_stride;
172	✓✓	75988	for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
173		72680	cur_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos]];
174	✓✓	72680	if(mb_x)
175		69372	left_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos - 1]];
176	✓✓	363400	for(j = 0; j < 16; j += 4){
177	✓✓	290720	Y = s->current_picture_ptr->f->data[0] + mb_x16 + (row16 + j) * s->linesize + 4 * !mb_x;
178	✓✓	1440368	for(i = !mb_x; i < 4; i++, Y += 4){
179		1149648	int ij = i + j;
180		1149648	loc_lim = 0;
181	✓✓	1149648	if(r->deblock_coefs[mb_pos] & (1 << ij))
182		351712	loc_lim = cur_lim;
183	✓✓✓✓	797936	else if(!i && r->deblock_coefs[mb_pos - 1] & (1 << (ij + 3)))
184		14120	loc_lim = left_lim;
185	✓✓✓✓	783816	else if( i && r->deblock_coefs[mb_pos] & (1 << (ij - 1)))
186		38450	loc_lim = cur_lim;
187	✓✓	1149648	if(loc_lim)
188		373358	rv30_weak_loop_filter(Y, 1, s->linesize, loc_lim);
189			}
190			}
191	✓✓	218040	for(k = 0; k < 2; k++){
192		145360	int cur_cbp, left_cbp = 0;
193		145360	cur_cbp = (r->cbp_chroma[mb_pos] >> (k*4)) & 0xF;
194	✓✓	145360	if(mb_x)
195		138744	left_cbp = (r->cbp_chroma[mb_pos - 1] >> (k*4)) & 0xF;
196	✓✓	436080	for(j = 0; j < 8; j += 4){
197	✓✓	290720	C = s->current_picture_ptr->f->data[k + 1] + mb_x8 + (row8 + j) * s->uvlinesize + 4 * !mb_x;
198	✓✓	858928	for(i = !mb_x; i < 2; i++, C += 4){
199		568208	int ij = i + (j >> 1);
200		568208	loc_lim = 0;
201	✓✓	568208	if (cur_cbp & (1 << ij))
202		132602	loc_lim = cur_lim;
203	✓✓✓✓	435606	else if(!i && left_cbp & (1 << (ij + 1)))
204		24668	loc_lim = left_lim;
205	✓✓✓✓	410938	else if( i && cur_cbp & (1 << (ij - 1)))
206		16738	loc_lim = cur_lim;
207	✓✓	568208	if(loc_lim)
208		143764	rv30_weak_loop_filter(C, 1, s->uvlinesize, loc_lim);
209			}
210			}
211			}
212			}
213		3308	mb_pos = row * s->mb_stride;
214	✓✓	75988	for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){
215		72680	cur_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos]];
216	✓✓	72680	if(row)
217		67830	top_lim = rv30_loop_filt_lim[s->current_picture_ptr->qscale_table[mb_pos - s->mb_stride]];
218	✓✓✓✓	358550	for(j = 4*!row; j < 16; j += 4){
219		285870	Y = s->current_picture_ptr->f->data[0] + mb_x16 + (row16 + j) * s->linesize;
220	✓✓	1429350	for(i = 0; i < 4; i++, Y += 4){
221		1143480	int ij = i + j;
222		1143480	loc_lim = 0;
223	✓✓	1143480	if(r->deblock_coefs[mb_pos] & (1 << ij))
224		350204	loc_lim = cur_lim;
225	✓✓✓✓	793276	else if(!j && r->deblock_coefs[mb_pos - s->mb_stride] & (1 << (ij + 12)))
226		15928	loc_lim = top_lim;
227	✓✓✓✓	777348	else if( j && r->deblock_coefs[mb_pos] & (1 << (ij - 4)))
228		45866	loc_lim = cur_lim;
229	✓✓	1143480	if(loc_lim)
230		381230	rv30_weak_loop_filter(Y, s->linesize, 1, loc_lim);
231			}
232			}
233	✓✓	218040	for(k = 0; k < 2; k++){
234		145360	int cur_cbp, top_cbp = 0;
235		145360	cur_cbp = (r->cbp_chroma[mb_pos] >> (k*4)) & 0xF;
236	✓✓	145360	if(row)
237		135660	top_cbp = (r->cbp_chroma[mb_pos - s->mb_stride] >> (k*4)) & 0xF;
238	✓✓✓✓	426380	for(j = 4*!row; j < 8; j += 4){
239		281020	C = s->current_picture_ptr->f->data[k+1] + mb_x8 + (row8 + j) * s->uvlinesize;
240	✓✓	843060	for(i = 0; i < 2; i++, C += 4){
241		562040	int ij = i + (j >> 1);
242		562040	loc_lim = 0;
243	✓✓	562040	if (r->cbp_chroma[mb_pos] & (1 << ij))
244		129332	loc_lim = cur_lim;
245	✓✓✓✓	432708	else if(!j && top_cbp & (1 << (ij + 2)))
246		28486	loc_lim = top_lim;
247	✓✓✓✓	404222	else if( j && cur_cbp & (1 << (ij - 2)))
248		22304	loc_lim = cur_lim;
249	✓✓	562040	if(loc_lim)
250		149852	rv30_weak_loop_filter(C, s->uvlinesize, 1, loc_lim);
251			}
252			}
253			}
254			}
255		3308	}
256
257			/**
258			* Initialize decoder.
259			*/
260		5	static av_cold int rv30_decode_init(AVCodecContext *avctx)
261			{
262		5	RV34DecContext *r = avctx->priv_data;
263			int ret;
264
265		5	r->orig_width = avctx->coded_width;
266		5	r->orig_height = avctx->coded_height;
267
268	✗✓	5	if (avctx->extradata_size < 2) {
269			av_log(avctx, AV_LOG_ERROR, "Extradata is too small.\n");
270			return AVERROR(EINVAL);
271			}
272		5	r->rv30 = 1;
273	✗✓	5	if ((ret = ff_rv34_decode_init(avctx)) < 0)
274			return ret;
275
276		5	r->max_rpr = avctx->extradata[1] & 7;
277	✗✓	5	if(avctx->extradata_size < 2*r->max_rpr + 8){
278			av_log(avctx, AV_LOG_WARNING, "Insufficient extradata - need at least %d bytes, got %d\n",
279			2*r->max_rpr + 8, avctx->extradata_size);
280			}
281
282		5	r->parse_slice_header = rv30_parse_slice_header;
283		5	r->decode_intra_types = rv30_decode_intra_types;
284		5	r->decode_mb_info = rv30_decode_mb_info;
285		5	r->loop_filter = rv30_loop_filter;
286		5	r->luma_dc_quant_i = rv30_luma_dc_quant;
287		5	r->luma_dc_quant_p = rv30_luma_dc_quant;
288		5	return 0;
289			}
290
291			AVCodec ff_rv30_decoder = {
292			.name = "rv30",
293			.long_name = NULL_IF_CONFIG_SMALL("RealVideo 3.0"),
294			.type = AVMEDIA_TYPE_VIDEO,
295			.id = AV_CODEC_ID_RV30,
296			.priv_data_size = sizeof(RV34DecContext),
297			.init = rv30_decode_init,
298			.close = ff_rv34_decode_end,
299			.decode = ff_rv34_decode_frame,
300			.capabilities = AV_CODEC_CAP_DR1 \| AV_CODEC_CAP_DELAY \|
301			AV_CODEC_CAP_FRAME_THREADS,
302			.flush = ff_mpeg_flush,
303			.pix_fmts = (const enum AVPixelFormat[]) {
304			AV_PIX_FMT_YUV420P,
305			AV_PIX_FMT_NONE
306			},
307			.update_thread_context = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_update_thread_context),
308			.caps_internal = FF_CODEC_CAP_ALLOCATE_PROGRESS,
309			};