PeerStreamer

/*

 * Copyright (c) 2009  Aurelien Jacobs <aurel@gnuage.org>

 *

 * 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 <strings.h>

#include "avformat.h"

#include "metadata.h"

#include "libavutil/avstring.h"

#if LIBAVFORMAT_VERSION_MAJOR < 53

#define SIZE_OFFSET(x) sizeof(((AVFormatContext*)0)->x),offsetof(AVFormatContext,x)

static const struct {

    const char name[16];

    int   size;

    int   offset;

} compat_tab[] = {

    { "title",           SIZE_OFFSET(title)     },

    { "author",          SIZE_OFFSET(author)    },

    { "copyright",       SIZE_OFFSET(copyright) },

    { "comment",         SIZE_OFFSET(comment)   },

    { "album",           SIZE_OFFSET(album)     },

    { "year",            SIZE_OFFSET(year)      },

    { "track",           SIZE_OFFSET(track)     },

    { "genre",           SIZE_OFFSET(genre)     },

    { "artist",          SIZE_OFFSET(author)    },

    { "creator",         SIZE_OFFSET(author)    },

    { "written_by",      SIZE_OFFSET(author)    },

    { "lead_performer",  SIZE_OFFSET(author)    },

    { "description",     SIZE_OFFSET(comment)   },

    { "albumtitle",      SIZE_OFFSET(album)     },

    { "date_written",    SIZE_OFFSET(year)      },

    { "date_released",   SIZE_OFFSET(year)      },

    { "tracknumber",     SIZE_OFFSET(track)     },

    { "part_number",     SIZE_OFFSET(track)     },

};

void ff_metadata_demux_compat(AVFormatContext *ctx)

{

    AVMetadata *m;

    int i, j;

    if ((m = ctx->metadata))

        for (j=0; j<m->count; j++)

            for (i=0; i<FF_ARRAY_ELEMS(compat_tab); i++)

                if (!strcasecmp(m->elems[j].key, compat_tab[i].name)) {

                    int *ptr = (int *)((char *)ctx+compat_tab[i].offset);

                    if (*ptr)  continue;

                    if (compat_tab[i].size > sizeof(int))

                        av_strlcpy((char *)ptr, m->elems[j].value, compat_tab[i].size);

                    else

                        *ptr = atoi(m->elems[j].value);

                }

    for (i=0; i<ctx->nb_chapters; i++)

        if ((m = ctx->chapters[i]->metadata))

            for (j=0; j<m->count; j++)

                if (!strcasecmp(m->elems[j].key, "title")) {

                    av_free(ctx->chapters[i]->title);

                    ctx->chapters[i]->title = av_strdup(m->elems[j].value);

                }

    for (i=0; i<ctx->nb_programs; i++)

        if ((m = ctx->programs[i]->metadata))

            for (j=0; j<m->count; j++) {

                if (!strcasecmp(m->elems[j].key, "name")) {

                    av_free(ctx->programs[i]->name);

                    ctx->programs[i]->name = av_strdup(m->elems[j].value);

                }

                if (!strcasecmp(m->elems[j].key, "provider_name")) {

                    av_free(ctx->programs[i]->provider_name);

                    ctx->programs[i]->provider_name = av_strdup(m->elems[j].value);

                }

            }

    for (i=0; i<ctx->nb_streams; i++)

        if ((m = ctx->streams[i]->metadata))

            for (j=0; j<m->count; j++) {

                if (!strcasecmp(m->elems[j].key, "language"))

                    av_strlcpy(ctx->streams[i]->language, m->elems[j].value, 4);

                if (!strcasecmp(m->elems[j].key, "filename")) {

                    av_free(ctx->streams[i]->filename);

                    ctx->streams[i]->filename= av_strdup(m->elems[j].value);

                }

            }

}

#define FILL_METADATA(s, key, value) {                                        \

    if (value && *value &&                                                    \

        !av_metadata_get(s->metadata, #key, NULL, AV_METADATA_IGNORE_CASE))   \

        av_metadata_set(&s->metadata, (const AVMetadataTag){#key, value});    \

    }

#define FILL_METADATA_STR(s, key)  FILL_METADATA(s, key, s->key)

#define FILL_METADATA_INT(s, key) {                                           \

    char number[10];                                                          \

    snprintf(number, sizeof(number), "%d", s->key);                           \

    if(s->key)  FILL_METADATA(s, key, number) }

void ff_metadata_mux_compat(AVFormatContext *ctx)

{

    int i;

    FILL_METADATA_STR(ctx, title);

    FILL_METADATA_STR(ctx, author);

    FILL_METADATA_STR(ctx, copyright);

    FILL_METADATA_STR(ctx, comment);

    FILL_METADATA_STR(ctx, album);

    FILL_METADATA_INT(ctx, year);

    FILL_METADATA_INT(ctx, track);

    FILL_METADATA_STR(ctx, genre);

    for (i=0; i<ctx->nb_chapters; i++)

        FILL_METADATA_STR(ctx->chapters[i], title);

    for (i=0; i<ctx->nb_programs; i++) {

        FILL_METADATA_STR(ctx->programs[i], name);

        FILL_METADATA_STR(ctx->programs[i], provider_name);

    }

    for (i=0; i<ctx->nb_streams; i++) {

        FILL_METADATA_STR(ctx->streams[i], language);

        FILL_METADATA_STR(ctx->streams[i], filename);

    }

}

#endif /* LIBAVFORMAT_VERSION_MAJOR < 53 */