FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/aac_ac3_parser.c	Lines:	47	48	97.9 %
Date:	2021-04-18 10:33:33	Branches:	29	30	96.7 %


/*
 * Common AAC and AC-3 parser
 * Copyright (c) 2003 Fabrice Bellard
 * Copyright (c) 2003 Michael Niedermayer
 *
 * 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
 */

#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "parser.h"
#include "aac_ac3_parser.h"

int ff_aac_ac3_parse(AVCodecParserContext *s1,
                     AVCodecContext *avctx,
                     const uint8_t **poutbuf, int *poutbuf_size,
                     const uint8_t *buf, int buf_size)
{
    AACAC3ParseContext *s = s1->priv_data;
    ParseContext *pc = &s->pc;
    int len, i;
    int new_frame_start;
    int got_frame = 0;

get_next:
    i=END_NOT_FOUND;
    if(s->remaining_size <= buf_size){
        if(s->remaining_size && !s->need_next_header){
            i= s->remaining_size;
            s->remaining_size = 0;
        }else{ //we need a header first
            len=0;
            for(i=s->remaining_size; i<buf_size; i++){
                s->state = (s->state<<8) + buf[i];
                if((len=s->sync(s->state, s, &s->need_next_header, &new_frame_start)))
                    break;
            }
            if(len<=0){
                i=END_NOT_FOUND;
            }else{
                got_frame = 1;
                s->state=0;
                i-= s->header_size -1;
                s->remaining_size = len;
                if(!new_frame_start || pc->index+i<=0){
                    s->remaining_size += i;
                    goto get_next;
                }
                else if (i < 0) {
                    s->remaining_size += i;
                }
            }
        }
    }

    if(ff_combine_frame(pc, i, &buf, &buf_size)<0){
        s->remaining_size -= FFMIN(s->remaining_size, buf_size);
        *poutbuf = NULL;
        *poutbuf_size = 0;
        return buf_size;
    }

    *poutbuf = buf;
    *poutbuf_size = buf_size;

    /* update codec info */
    if(s->codec_id)
        avctx->codec_id = s->codec_id;

    if (got_frame) {
        /* Due to backwards compatible HE-AAC the sample rate, channel count,
           and total number of samples found in an AAC ADTS header are not
           reliable. Bit rate is still accurate because the total frame
           duration in seconds is still correct (as is the number of bits in
           the frame). */
        if (avctx->codec_id != AV_CODEC_ID_AAC) {
            avctx->sample_rate = s->sample_rate;
            if (!CONFIG_EAC3_DECODER || avctx->codec_id != AV_CODEC_ID_EAC3) {
                avctx->channels = s->channels;
                avctx->channel_layout = s->channel_layout;
            }
            s1->duration = s->samples;
            avctx->audio_service_type = s->service_type;
        }

        /* Calculate the average bit rate */
        s->frame_number++;
        if (!CONFIG_EAC3_DECODER || avctx->codec_id != AV_CODEC_ID_EAC3) {
            avctx->bit_rate +=
                (s->bit_rate - avctx->bit_rate) / s->frame_number;
        }
    }

    return i;
}


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* Common AAC and AC-3 parser
3			* Copyright (c) 2003 Fabrice Bellard
4			* Copyright (c) 2003 Michael Niedermayer
5			*
6			* This file is part of FFmpeg.
7			*
8			* FFmpeg is free software; you can redistribute it and/or
9			* modify it under the terms of the GNU Lesser General Public
10			* License as published by the Free Software Foundation; either
11			* version 2.1 of the License, or (at your option) any later version.
12			*
13			* FFmpeg is distributed in the hope that it will be useful,
14			* but WITHOUT ANY WARRANTY; without even the implied warranty of
15			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16			* Lesser General Public License for more details.
17			*
18			* You should have received a copy of the GNU Lesser General Public
19			* License along with FFmpeg; if not, write to the Free Software
20			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21			*/
22
23			#include "libavutil/channel_layout.h"
24			#include "libavutil/common.h"
25			#include "parser.h"
26			#include "aac_ac3_parser.h"
27
28		14796	int ff_aac_ac3_parse(AVCodecParserContext *s1,
29			AVCodecContext *avctx,
30			const uint8_t *poutbuf, int poutbuf_size,
31			const uint8_t *buf, int buf_size)
32			{
33		14796	AACAC3ParseContext *s = s1->priv_data;
34		14796	ParseContext *pc = &s->pc;
35			int len, i;
36			int new_frame_start;
37		14796	int got_frame = 0;
38
39		20932	get_next:
40		20932	i=END_NOT_FOUND;
41	✓✓	20932	if(s->remaining_size <= buf_size){
42	✓✓✓✓	17690	if(s->remaining_size && !s->need_next_header){
43		5770	i= s->remaining_size;
44		5770	s->remaining_size = 0;
45			}else{ //we need a header first
46		11920	len=0;
47	✓✓	74272	for(i=s->remaining_size; i<buf_size; i++){
48		72581	s->state = (s->state<<8) + buf[i];
49	✓✓	72581	if((len=s->sync(s->state, s, &s->need_next_header, &new_frame_start)))
50		10229	break;
51			}
52	✓✓	11920	if(len<=0){
53		1691	i=END_NOT_FOUND;
54			}else{
55		10229	got_frame = 1;
56		10229	s->state=0;
57		10229	i-= s->header_size -1;
58		10229	s->remaining_size = len;
59	✓✓✓✓	10229	if(!new_frame_start \|\| pc->index+i<=0){
60		6136	s->remaining_size += i;
61		6136	goto get_next;
62			}
63	✗✓	4093	else if (i < 0) {
64			s->remaining_size += i;
65			}
66			}
67			}
68			}
69
70	✓✓	14796	if(ff_combine_frame(pc, i, &buf, &buf_size)<0){
71		4806	s->remaining_size -= FFMIN(s->remaining_size, buf_size);
72		4806	*poutbuf = NULL;
73		4806	*poutbuf_size = 0;
74		4806	return buf_size;
75			}
76
77		9990	*poutbuf = buf;
78		9990	*poutbuf_size = buf_size;
79
80			/* update codec info */
81	✓✓	9990	if(s->codec_id)
82		4187	avctx->codec_id = s->codec_id;
83
84	✓✓	9990	if (got_frame) {
85			/* Due to backwards compatible HE-AAC the sample rate, channel count,
86			and total number of samples found in an AAC ADTS header are not
87			reliable. Bit rate is still accurate because the total frame
88			duration in seconds is still correct (as is the number of bits in
89			the frame). */
90	✓✓	9863	if (avctx->codec_id != AV_CODEC_ID_AAC) {
91		4093	avctx->sample_rate = s->sample_rate;
92	✓✓	4093	if (!CONFIG_EAC3_DECODER \|\| avctx->codec_id != AV_CODEC_ID_EAC3) {
93		1450	avctx->channels = s->channels;
94		1450	avctx->channel_layout = s->channel_layout;
95			}
96		4093	s1->duration = s->samples;
97		4093	avctx->audio_service_type = s->service_type;
98			}
99
100			/* Calculate the average bit rate */
101		9863	s->frame_number++;
102	✓✓	9863	if (!CONFIG_EAC3_DECODER \|\| avctx->codec_id != AV_CODEC_ID_EAC3) {
103		7220	avctx->bit_rate +=
104		7220	(s->bit_rate - avctx->bit_rate) / s->frame_number;
105			}
106			}
107
108		9990	return i;
109			}