/*****************************************************************************

 * minibox.h: minimal mp4 box iterator

 *****************************************************************************

 * Copyright (C) 2017 VideoLabs, VLC authors and VideoLAN

 *

 * This program 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.

 *

 * This program 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 this program; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.

 *****************************************************************************/

typedef struct

{

    const uint8_t *p_buffer;

    size_t i_buffer;

    const uint8_t *p_payload;

    size_t i_payload;

    vlc_fourcc_t i_type;

} mp4_box_iterator_t;

static void mp4_box_iterator_Init( mp4_box_iterator_t *p_it,

                                   const uint8_t *p_data, size_t i_data )

{

    p_it->p_buffer = p_data;

    p_it->i_buffer = i_data;

}

Unexecuted instantiation: webvtt.c:mp4_box_iterator_Init

subsvtt.c:mp4_box_iterator_Init

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32

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{

33

409k

    p_it->p_buffer = p_data;

34

409k

    p_it->i_buffer = i_data;

35

409k

}

substx3g.c:mp4_box_iterator_Init

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32

2.08k

{

33

2.08k

    p_it->p_buffer = p_data;

34

2.08k

    p_it->i_buffer = i_data;

35

2.08k

}

static bool mp4_box_iterator_Next( mp4_box_iterator_t *p_it )

{

    while( p_it->i_buffer > 8 )

    {

        const uint8_t *p = p_it->p_buffer;

        const size_t i_size = GetDWBE( p );

        p_it->i_type = VLC_FOURCC(p[4], p[5], p[6], p[7]);

        if( i_size >= 8 && i_size <= p_it->i_buffer )

        {

            p_it->p_payload = &p_it->p_buffer[8];

            p_it->i_payload = i_size - 8;

            /* update for next run */

            p_it->p_buffer += i_size;

            p_it->i_buffer -= i_size;

            return true;

        }

        else break;

    }

    return false;

}

Unexecuted instantiation: webvtt.c:mp4_box_iterator_Next

subsvtt.c:mp4_box_iterator_Next

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38

1.59M

{

39

1.59M

    while( p_it->i_buffer > 8 )

40

1.18M

    {

41

1.18M

        const uint8_t *p = p_it->p_buffer;

42

1.18M

        const size_t i_size = GetDWBE( p );

43

1.18M

        p_it->i_type = VLC_FOURCC(p[4], p[5], p[6], p[7]);

44

1.18M

        if( i_size >= 8 && i_size <= p_it->i_buffer )

45

1.18M

        {

46

1.18M

            p_it->p_payload = &p_it->p_buffer[8];

47

1.18M

            p_it->i_payload = i_size - 8;

48

            /* update for next run */

49

1.18M

            p_it->p_buffer += i_size;

50

1.18M

            p_it->i_buffer -= i_size;

51

1.18M

            return true;

52

1.18M

        }

53

0

        else break;

54

1.18M

    }

55

409k

    return false;

56

1.59M

}

substx3g.c:mp4_box_iterator_Next

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Source

38

2.06k

{

39

2.06k

    while( p_it->i_buffer > 8 )

40

58

    {

41

58

        const uint8_t *p = p_it->p_buffer;

42

58

        const size_t i_size = GetDWBE( p );

43

58

        p_it->i_type = VLC_FOURCC(p[4], p[5], p[6], p[7]);

44

58

        if( i_size >= 8 && i_size <= p_it->i_buffer )

45

10

        {

46

10

            p_it->p_payload = &p_it->p_buffer[8];

47

10

            p_it->i_payload = i_size - 8;

48

            /* update for next run */

49

10

            p_it->p_buffer += i_size;

50

10

            p_it->i_buffer -= i_size;

51

10

            return true;

52

10

        }

53

48

        else break;

54

58

    }

55

2.05k

    return false;

56

2.06k

}