/*

 * VC-1 and WMV3 decoder

 * Copyright (c) 2006-2007 Konstantin Shishkov

 * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, 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

 */

#ifndef AVCODEC_VC1_COMMON_H

#define AVCODEC_VC1_COMMON_H

#include <stdint.h>

#include "libavutil/attributes.h"

#include "startcode.h"

/** Markers used in VC-1 AP frame data */

//@{

enum VC1Code {

    VC1_CODE_RES0       = 0x00000100,

    VC1_CODE_ENDOFSEQ   = 0x0000010A,

    VC1_CODE_SLICE,

    VC1_CODE_FIELD,

    VC1_CODE_FRAME,

    VC1_CODE_ENTRYPOINT,

    VC1_CODE_SEQHDR,

};

//@}

#define IS_MARKER(x) (((x) & ~0xFF) == VC1_CODE_RES0)

/** Available Profiles */

//@{

enum Profile {

    PROFILE_SIMPLE,

    PROFILE_MAIN,

    PROFILE_COMPLEX, ///< TODO: WMV9 specific

    PROFILE_ADVANCED

};

//@}

/** Find VC-1 marker in buffer

 * @return position where next marker starts or end of buffer if no marker found

 */

static av_always_inline const uint8_t* find_next_marker(const uint8_t *src, const uint8_t *end)

{

    if (end - src >= 4) {

        uint32_t mrk = 0xFFFFFFFF;

        src = avpriv_find_start_code(src, end, &mrk);

        if (IS_MARKER(mrk))

            return src - 4;

    }

    return end;

}

Unexecuted instantiation: vc1_parser.c:find_next_marker

Unexecuted instantiation: vc1dsp.c:find_next_marker

Unexecuted instantiation: extract_extradata.c:find_next_marker

Unexecuted instantiation: remove_extradata.c:find_next_marker

Unexecuted instantiation: vc1.c:find_next_marker

Unexecuted instantiation: vc1data.c:find_next_marker

vc1dec.c:find_next_marker

Line

Count

Source

60

1.98M

{

61

1.98M

    if (end - src >= 4) {

62

1.96M

        uint32_t mrk = 0xFFFFFFFF;

63

1.96M

        src = avpriv_find_start_code(src, end, &mrk);

64

1.96M

        if (IS_MARKER(mrk))

65

1.50M

            return src - 4;

66

1.96M

    }

67

478k

    return end;

68

1.98M

}

Unexecuted instantiation: vc1_block.c:find_next_marker

Unexecuted instantiation: vc1_loopfilter.c:find_next_marker

Unexecuted instantiation: vc1_mc.c:find_next_marker

Unexecuted instantiation: vc1_pred.c:find_next_marker

Unexecuted instantiation: mss2.c:find_next_marker

static av_always_inline int vc1_unescape_buffer(const uint8_t *src, int size, uint8_t *dst)

{

    int dsize = 0, i;

    if (size < 4) {

        for (dsize = 0; dsize < size; dsize++)

            *dst++ = *src++;

        return size;

    }

    for (i = 0; i < size; i++, src++) {

        if (src[0] == 3 && i >= 2 && !src[-1] && !src[-2] && i < size-1 && src[1] < 4) {

            dst[dsize++] = src[1];

            src++;

            i++;

        } else

            dst[dsize++] = *src;

    }

    return dsize;

}

Unexecuted instantiation: vc1_parser.c:vc1_unescape_buffer

vc1dsp.c:vc1_unescape_buffer

Line

Count

Source

71

1.59M

{

72

1.59M

    int dsize = 0, i;

73

74

1.59M

    if (size < 4) {

75

935k

        for (dsize = 0; dsize < size; dsize++)

76

616k

            *dst++ = *src++;

77

319k

        return size;

78

319k

    }

79

381M

    for (i = 0; i < size; i++, src++) {

80

380M

        if (src[0] == 3 && i >= 2 && !src[-1] && !src[-2] && i < size-1 && src[1] < 4) {

81

106k

            dst[dsize++] = src[1];

82

106k

            src++;

83

106k

            i++;

84

106k

        } else

85

380M

            dst[dsize++] = *src;

86

380M

    }

87

1.27M

    return dsize;

88

1.59M

}

Unexecuted instantiation: extract_extradata.c:vc1_unescape_buffer

Unexecuted instantiation: remove_extradata.c:vc1_unescape_buffer

Unexecuted instantiation: vc1.c:vc1_unescape_buffer

Unexecuted instantiation: vc1data.c:vc1_unescape_buffer

Unexecuted instantiation: vc1dec.c:vc1_unescape_buffer

Unexecuted instantiation: vc1_block.c:vc1_unescape_buffer

Unexecuted instantiation: vc1_loopfilter.c:vc1_unescape_buffer

Unexecuted instantiation: vc1_mc.c:vc1_unescape_buffer

Unexecuted instantiation: vc1_pred.c:vc1_unescape_buffer

Unexecuted instantiation: mss2.c:vc1_unescape_buffer

#endif /* AVCODEC_VC1_COMMON_H */