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GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/aac_ac3_parser.c	Lines:	45	46	97.8 %
Date:	2020-01-27 20:17:04	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 (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;
        }

        if (avctx->codec_id != AV_CODEC_ID_EAC3)
            avctx->bit_rate = s->bit_rate;
    }

    return i;
}


Generated by: GCOVR (Version 4.1)

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		13972	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		13972	AACAC3ParseContext *s = s1->priv_data;
34		13972	ParseContext *pc = &s->pc;
35			int len, i;
36			int new_frame_start;
37		13972	int got_frame = 0;
38
39		20094	get_next:
40		20094	i=END_NOT_FOUND;
41	✓✓	20094	if(s->remaining_size <= buf_size){
42	✓✓✓✓	17308	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		11538	len=0;
47	✓✓	72054	for(i=s->remaining_size; i<buf_size; i++){
48		70439	s->state = (s->state<<8) + buf[i];
49	✓✓	70439	if((len=s->sync(s->state, s, &s->need_next_header, &new_frame_start)))
50		9923	break;
51			}
52	✓✓	11538	if(len<=0){
53		1615	i=END_NOT_FOUND;
54			}else{
55		9923	got_frame = 1;
56		9923	s->state=0;
57		9923	i-= s->header_size -1;
58		9923	s->remaining_size = len;
59	✓✓✓✓	9923	if(!new_frame_start \|\| pc->index+i<=0){
60		6122	s->remaining_size += i;
61		6122	goto get_next;
62			}
63	✗✓	3801	else if (i < 0) {
64			s->remaining_size += i;
65			}
66			}
67			}
68			}
69
70	✓✓	13972	if(ff_combine_frame(pc, i, &buf, &buf_size)<0){
71		4299	s->remaining_size -= FFMIN(s->remaining_size, buf_size);
72		4299	*poutbuf = NULL;
73		4299	*poutbuf_size = 0;
74		4299	return buf_size;
75			}
76
77		9673	*poutbuf = buf;
78		9673	*poutbuf_size = buf_size;
79
80			/* update codec info */
81	✓✓	9673	if(s->codec_id)
82		3871	avctx->codec_id = s->codec_id;
83
84	✓✓	9673	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	✓✓	9571	if (avctx->codec_id != AV_CODEC_ID_AAC) {
91		3801	avctx->sample_rate = s->sample_rate;
92	✓✓	3801	if (avctx->codec_id != AV_CODEC_ID_EAC3) {
93		1158	avctx->channels = s->channels;
94		1158	avctx->channel_layout = s->channel_layout;
95			}
96		3801	s1->duration = s->samples;
97		3801	avctx->audio_service_type = s->service_type;
98			}
99
100	✓✓	9571	if (avctx->codec_id != AV_CODEC_ID_EAC3)
101		6928	avctx->bit_rate = s->bit_rate;
102			}
103
104		9673	return i;
105			}