/*
 * MXF
 * Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
 *
 * 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/common.h"
#include "mxf.h"

/**
 * SMPTE RP224 http://www.smpte-ra.org/mdd/index.html
 */
const MXFCodecUL ff_mxf_data_definition_uls[] = {
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x02,0x01,0x00,0x00,0x00 }, 13, AVMEDIA_TYPE_VIDEO },
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x02,0x02,0x00,0x00,0x00 }, 13, AVMEDIA_TYPE_AUDIO },
    { { 0x80,0x7D,0x00,0x60,0x08,0x14,0x3E,0x6F,0x6F,0x3C,0x8C,0xE1,0x6C,0xEF,0x11,0xD2 }, 16, AVMEDIA_TYPE_VIDEO }, /* LegacyPicture Avid Media Composer MXF */
    { { 0x80,0x7D,0x00,0x60,0x08,0x14,0x3E,0x6F,0x78,0xE1,0xEB,0xE1,0x6C,0xEF,0x11,0xD2 }, 16, AVMEDIA_TYPE_AUDIO }, /* LegacySound Avid Media Composer MXF */
    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },  0,  AVMEDIA_TYPE_DATA },
};

const MXFCodecUL ff_mxf_codec_uls[] = {
    /* PictureEssenceCoding */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* MP@ML Long GoP */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* D-10 50Mbps PAL */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* MP@HL Long GoP */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* 422P@HL I-Frame */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x20,0x02,0x03 }, 14,      AV_CODEC_ID_MPEG4 }, /* XDCAM proxy_pal030926.mxf */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x01,0x02,0x00 }, 13,    AV_CODEC_ID_DVVIDEO }, /* DV25 IEC PAL */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 }, 14,   AV_CODEC_ID_JPEG2000 }, /* JPEG2000 Codestream */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x01,0x7F,0x00,0x00,0x00 }, 13,   AV_CODEC_ID_RAWVIDEO }, /* Uncompressed */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }, 15,   AV_CODEC_ID_RAWVIDEO }, /* Uncompressed 422 8-bit */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x71,0x00,0x00,0x00 }, 13,      AV_CODEC_ID_DNXHD }, /* SMPTE VC-3/DNxHD */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x03,0x02,0x00,0x00 }, 14,      AV_CODEC_ID_DNXHD }, /* SMPTE VC-3/DNxHD */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0E,0x04,0x02,0x01,0x02,0x04,0x01,0x00 }, 16,      AV_CODEC_ID_DNXHD }, /* SMPTE VC-3/DNxHD Legacy Avid Media Composer MXF */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x00,0x00 }, 14,       AV_CODEC_ID_H264 }, /* H.264/MPEG-4 AVC Intra */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x31,0x11,0x01 }, 14,       AV_CODEC_ID_H264 }, /* H.264/MPEG-4 AVC SPS/PPS in-band */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x01,0x01,0x02,0x02,0x01 }, 16,       AV_CODEC_ID_V210 }, /* V210 */
    /* SoundEssenceCompression */
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x03,0x04,0x02,0x02,0x02,0x03,0x03,0x01,0x00 }, 14,        AV_CODEC_ID_AAC }, /* MPEG2 AAC ADTS (legacy) */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 }, 13,  AV_CODEC_ID_PCM_S16LE }, /* Uncompressed */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x7F,0x00,0x00,0x00 }, 13,  AV_CODEC_ID_PCM_S16LE },
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x07,0x04,0x02,0x02,0x01,0x7E,0x00,0x00,0x00 }, 13,  AV_CODEC_ID_PCM_S16BE }, /* From Omneon MXF file */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x04,0x04,0x02,0x02,0x02,0x03,0x01,0x01,0x00 }, 15,   AV_CODEC_ID_PCM_ALAW }, /* XDCAM Proxy C0023S01.mxf */
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x02,0x01,0x00 }, 15,        AV_CODEC_ID_AC3 },
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x02,0x05,0x00 }, 15,        AV_CODEC_ID_MP2 }, /* MP2 or MP3 */
  //{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x02,0x1C,0x00 }, 15,    AV_CODEC_ID_DOLBY_E }, /* Dolby-E */
    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },  0,       AV_CODEC_ID_NONE },
};

const MXFCodecUL ff_mxf_pixel_format_uls[] = {
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x01,0x01,0x02,0x01,0x01 }, 16, AV_PIX_FMT_UYVY422 },
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x01,0x01,0x02,0x01,0x02 }, 16, AV_PIX_FMT_YUYV422 },
    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },  0,    AV_PIX_FMT_NONE },
};

static const struct {
    enum AVPixelFormat pix_fmt;
    const char data[16];
} ff_mxf_pixel_layouts[] = {
    /**
     * See SMPTE 377M E.2.46
     *
     * Note: Only RGB, palette based and "abnormal" YUV pixel formats like 4:2:2:4 go here.
     *       For regular YUV, use CDCIPictureEssenceDescriptor.
     *
     * Note: Do not use these for encoding descriptors for little-endian formats until we
     *       get samples or official word from SMPTE on how/if those can be encoded.
     */
    {AV_PIX_FMT_ABGR,    {'A', 8,  'B', 8,  'G', 8, 'R', 8                 }},
    {AV_PIX_FMT_ARGB,    {'A', 8,  'R', 8,  'G', 8, 'B', 8                 }},
    {AV_PIX_FMT_BGR24,   {'B', 8,  'G', 8,  'R', 8                         }},
    {AV_PIX_FMT_BGRA,    {'B', 8,  'G', 8,  'R', 8, 'A', 8                 }},
    {AV_PIX_FMT_RGB24,   {'R', 8,  'G', 8,  'B', 8                         }},
    {AV_PIX_FMT_RGB444BE,{'F', 4,  'R', 4,  'G', 4, 'B', 4                 }},
    {AV_PIX_FMT_RGB48BE, {'R', 8,  'r', 8,  'G', 8, 'g', 8, 'B', 8, 'b', 8 }},
    {AV_PIX_FMT_RGB48BE, {'R', 16, 'G', 16, 'B', 16                        }},
    {AV_PIX_FMT_RGB48LE, {'r', 8,  'R', 8,  'g', 8, 'G', 8, 'b', 8, 'B', 8 }},
    {AV_PIX_FMT_RGB555BE,{'F', 1,  'R', 5,  'G', 5, 'B', 5                 }},
    {AV_PIX_FMT_RGB565BE,{'R', 5,  'G', 6,  'B', 5                         }},
    {AV_PIX_FMT_RGBA,    {'R', 8,  'G', 8,  'B', 8, 'A', 8                 }},
    {AV_PIX_FMT_PAL8,    {'P', 8                                           }},
    {AV_PIX_FMT_GRAY8,   {'A', 8                                           }},
};

static const int num_pixel_layouts = FF_ARRAY_ELEMS(ff_mxf_pixel_layouts);

int ff_mxf_decode_pixel_layout(const char pixel_layout[16], enum AVPixelFormat *pix_fmt)
{
    int x;

    for(x = 0; x < num_pixel_layouts; x++) {
        if (!memcmp(pixel_layout, ff_mxf_pixel_layouts[x].data, 16)) {
            *pix_fmt = ff_mxf_pixel_layouts[x].pix_fmt;
            return 0;
        }
    }

    return -1;
}

static const MXFSamplesPerFrame mxf_spf[] = {
    { { 1001, 24000 }, { 2002, 0,    0,    0,    0,    0 } }, // FILM 23.976
    { { 1, 24},        { 2000, 0,    0,    0,    0,    0 } }, // FILM 24
    { { 1001, 30000 }, { 1602, 1601, 1602, 1601, 1602, 0 } }, // NTSC 29.97
    { { 1001, 60000 }, { 801,  801,  801,  801,  800,  0 } }, // NTSC 59.94
    { { 1, 25 },       { 1920, 0,    0,    0,    0,    0 } }, // PAL 25
    { { 1, 50 },       { 960,  0,    0,    0,    0,    0 } }, // PAL 50
};

static const AVRational mxf_time_base[] = {
    { 1001, 24000 },
    { 1, 24},
    { 1001, 30000 },
    { 1001, 60000 },
    { 1, 25 },
    { 1, 50 },
    { 0, 0}
};

const MXFSamplesPerFrame *ff_mxf_get_samples_per_frame(AVFormatContext *s,
                                                       AVRational time_base)
{
    int idx = av_find_nearest_q_idx(time_base, mxf_time_base);
    AVRational diff = av_sub_q(time_base, mxf_time_base[idx]);

    diff.num = abs(diff.num);

    if (av_cmp_q(diff, (AVRational){1, 1000}) >= 0)
        return NULL;

    if (av_cmp_q(time_base, mxf_time_base[idx]))
        av_log(s, AV_LOG_WARNING,
               "%d/%d input time base matched %d/%d container time base\n",
               time_base.num, time_base.den,
               mxf_spf[idx].time_base.num,
               mxf_spf[idx].time_base.den);

    return &mxf_spf[idx];
}