[deb_ffmpeg.git] / ffmpeg / tools / sidxindex.c

/*
 * Copyright (c) 2014 Martin Storsjo
 *
 * 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 <stdio.h>
#include <string.h>

#include "libavformat/avformat.h"
#include "libavutil/avstring.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"

static int usage(const char *argv0, int ret)
{
    fprintf(stderr, "%s -out foo.mpd file1\n", argv0);
    return ret;
}

struct Track {
    const char *name;
    int64_t duration;
    int bitrate;
    int track_id;
    int is_audio, is_video;
    int width, height;
    int sample_rate, channels;
    int timescale;
    char codec_str[30];
    int64_t sidx_start, sidx_length;
    int64_t  earliest_presentation;
    uint32_t earliest_presentation_timescale;
};

struct Tracks {
    int nb_tracks;
    int64_t duration;
    struct Track **tracks;
    int multiple_tracks_per_file;
};

static void set_codec_str(AVCodecContext *codec, char *str, int size)
{
    switch (codec->codec_id) {
    case AV_CODEC_ID_H264:
        snprintf(str, size, "avc1");
        if (codec->extradata_size >= 4 && codec->extradata[0] == 1) {
            av_strlcatf(str, size, ".%02x%02x%02x",
                        codec->extradata[1], codec->extradata[2], codec->extradata[3]);
        }
        break;
    case AV_CODEC_ID_AAC:
        snprintf(str, size, "mp4a.40"); // 0x40 is the mp4 object type for AAC
        if (codec->extradata_size >= 2) {
            int aot = codec->extradata[0] >> 3;
            if (aot == 31)
                aot = ((AV_RB16(codec->extradata) >> 5) & 0x3f) + 32;
            av_strlcatf(str, size, ".%d", aot);
        }
        break;
    }
}

static int find_sidx(struct Tracks *tracks, int start_index,
                     const char *file)
{
    int err = 0;
    AVIOContext *f = NULL;
    int i;

    if ((err = avio_open2(&f, file, AVIO_FLAG_READ, NULL, NULL)) < 0)
        goto fail;

    while (!f->eof_reached) {
        int64_t pos = avio_tell(f);
        int32_t size, tag;

        size = avio_rb32(f);
        tag  = avio_rb32(f);
        if (size < 8)
            break;
        if (tag == MKBETAG('s', 'i', 'd', 'x')) {
            int version, track_id;
            uint32_t timescale;
            int64_t earliest_presentation;
            version = avio_r8(f);
            avio_rb24(f); /* flags */
            track_id = avio_rb32(f);
            timescale = avio_rb32(f);
            earliest_presentation = version ? avio_rb64(f) : avio_rb32(f);
            for (i = start_index; i < tracks->nb_tracks; i++) {
                struct Track *track = tracks->tracks[i];
                if (!track->sidx_start) {
                    track->sidx_start  = pos;
                    track->sidx_length = size;
                } else if (pos == track->sidx_start + track->sidx_length) {
                    track->sidx_length = pos + size - track->sidx_start;
                }
                if (track->track_id == track_id) {
                    track->earliest_presentation = earliest_presentation;
                    track->earliest_presentation_timescale = timescale;
                }
            }
        }
        if (avio_seek(f, pos + size, SEEK_SET) != pos + size)
            break;
    }

fail:
    if (f)
        avio_close(f);
    return err;
}

static int handle_file(struct Tracks *tracks, const char *file)
{
    AVFormatContext *ctx = NULL;
    int err = 0, i, orig_tracks = tracks->nb_tracks;
    char errbuf[50], *ptr;
    struct Track *track;

    err = avformat_open_input(&ctx, file, NULL, NULL);
    if (err < 0) {
        av_strerror(err, errbuf, sizeof(errbuf));
        fprintf(stderr, "Unable to open %s: %s\n", file, errbuf);
        return 1;
    }

    err = avformat_find_stream_info(ctx, NULL);
    if (err < 0) {
        av_strerror(err, errbuf, sizeof(errbuf));
        fprintf(stderr, "Unable to identify %s: %s\n", file, errbuf);
        goto fail;
    }

    if (ctx->nb_streams < 1) {
        fprintf(stderr, "No streams found in %s\n", file);
        goto fail;
    }
    if (ctx->nb_streams > 1)
        tracks->multiple_tracks_per_file = 1;

    for (i = 0; i < ctx->nb_streams; i++) {
        struct Track **temp;
        AVStream *st = ctx->streams[i];

        if (st->codec->bit_rate == 0) {
            fprintf(stderr, "Skipping track %d in %s as it has zero bitrate\n",
                    st->id, file);
            continue;
        }

        track = av_mallocz(sizeof(*track));
        if (!track) {
            err = AVERROR(ENOMEM);
            goto fail;
        }
        temp = av_realloc(tracks->tracks,
                          sizeof(*tracks->tracks) * (tracks->nb_tracks + 1));
        if (!temp) {
            av_free(track);
            err = AVERROR(ENOMEM);
            goto fail;
        }
        tracks->tracks = temp;
        tracks->tracks[tracks->nb_tracks] = track;

        track->name = file;
        if ((ptr = strrchr(file, '/')))
            track->name = ptr + 1;

        track->bitrate   = st->codec->bit_rate;
        track->track_id  = st->id;
        track->timescale = st->time_base.den;
        track->duration  = st->duration;
        track->is_audio  = st->codec->codec_type == AVMEDIA_TYPE_AUDIO;
        track->is_video  = st->codec->codec_type == AVMEDIA_TYPE_VIDEO;

        if (!track->is_audio && !track->is_video) {
            fprintf(stderr,
                    "Track %d in %s is neither video nor audio, skipping\n",
                    track->track_id, file);
            av_freep(&tracks->tracks[tracks->nb_tracks]);
            continue;
        }

        tracks->duration = FFMAX(tracks->duration,
                                 av_rescale_rnd(track->duration, AV_TIME_BASE,
                                                track->timescale, AV_ROUND_UP));

        if (track->is_audio) {
            track->channels    = st->codec->channels;
            track->sample_rate = st->codec->sample_rate;
        }
        if (track->is_video) {
            track->width  = st->codec->width;
            track->height = st->codec->height;
        }
        set_codec_str(st->codec, track->codec_str, sizeof(track->codec_str));

        tracks->nb_tracks++;
    }

    avformat_close_input(&ctx);

    err = find_sidx(tracks, orig_tracks, file);

fail:
    if (ctx)
        avformat_close_input(&ctx);
    return err;
}

static void write_time(FILE *out, int64_t time, int decimals, enum AVRounding round)
{
    int seconds = time / AV_TIME_BASE;
    int fractions = time % AV_TIME_BASE;
    int minutes = seconds / 60;
    int hours = minutes / 60;
    fractions = av_rescale_rnd(fractions, pow(10, decimals), AV_TIME_BASE, round);
    seconds %= 60;
    minutes %= 60;
    fprintf(out, "PT");
    if (hours)
        fprintf(out, "%dH", hours);
    if (hours || minutes)
        fprintf(out, "%dM", minutes);
    fprintf(out, "%d.%0*dS", seconds, decimals, fractions);
}

static int output_mpd(struct Tracks *tracks, const char *filename)
{
    FILE *out;
    int i, j, ret = 0;
    struct Track **adaptation_sets_buf[2] = { NULL };
    struct Track ***adaptation_sets;
    int nb_tracks_buf[2] = { 0 };
    int *nb_tracks;
    int set, nb_sets;
    int64_t latest_start = 0;

    if (!tracks->multiple_tracks_per_file) {
        adaptation_sets = adaptation_sets_buf;
        nb_tracks = nb_tracks_buf;
        nb_sets = 2;
        for (i = 0; i < 2; i++) {
            adaptation_sets[i] = av_malloc(sizeof(*adaptation_sets[i]) * tracks->nb_tracks);
            if (!adaptation_sets[i]) {
                ret = AVERROR(ENOMEM);
                goto err;
            }
        }
        for (i = 0; i < tracks->nb_tracks; i++) {
            int set_index = -1;
            if (tracks->tracks[i]->is_video)
                set_index = 0;
            else if (tracks->tracks[i]->is_audio)
                set_index = 1;
            else
                continue;
            adaptation_sets[set_index][nb_tracks[set_index]++] = tracks->tracks[i];
        }
    } else {
        adaptation_sets = &tracks->tracks;
        nb_tracks = &tracks->nb_tracks;
        nb_sets = 1;
    }

    out = fopen(filename, "w");
    if (!out) {
        ret = AVERROR(errno);
        perror(filename);
        return ret;
    }
    fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
    fprintf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
                "\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
                "\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
                "\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
                "\tprofiles=\"urn:mpeg:dash:profile:isoff-on-demand:2011\"\n"
                "\ttype=\"static\"\n");
    fprintf(out, "\tmediaPresentationDuration=\"");
    write_time(out, tracks->duration, 1, AV_ROUND_DOWN);
    fprintf(out, "\"\n");
    fprintf(out, "\tminBufferTime=\"PT5S\">\n");

    for (i = 0; i < tracks->nb_tracks; i++) {
        int64_t start = av_rescale_rnd(tracks->tracks[i]->earliest_presentation,
                                       AV_TIME_BASE,
                                       tracks->tracks[i]->earliest_presentation_timescale,
                                       AV_ROUND_UP);
        latest_start = FFMAX(start, latest_start);
    }
    fprintf(out, "\t<Period start=\"");
    write_time(out, latest_start, 3, AV_ROUND_UP);
    fprintf(out, "\">\n");


    for (set = 0; set < nb_sets; set++) {
        if (nb_tracks[set] == 0)
            continue;
        fprintf(out, "\t\t<AdaptationSet segmentAlignment=\"true\">\n");
        if (nb_sets == 1) {
            for (i = 0; i < nb_tracks[set]; i++) {
                struct Track *track = adaptation_sets[set][i];
                if (strcmp(track->name, adaptation_sets[set][0]->name))
                    break;
                fprintf(out, "\t\t\t<ContentComponent id=\"%d\" contentType=\"%s\" />\n", track->track_id, track->is_audio ? "audio" : "video");
            }
        }

        for (i = 0; i < nb_tracks[set]; ) {
            struct Track *first_track = adaptation_sets[set][i];
            int width = 0, height = 0, sample_rate = 0, channels = 0, bitrate = 0;
            fprintf(out, "\t\t\t<Representation id=\"%d\" codecs=\"", i);
            for (j = i; j < nb_tracks[set]; j++) {
                struct Track *track = adaptation_sets[set][j];
                if (strcmp(track->name, first_track->name))
                    break;
                if (track->is_audio) {
                    sample_rate = track->sample_rate;
                    channels = track->channels;
                }
                if (track->is_video) {
                    width = track->width;
                    height = track->height;
                }
                bitrate += track->bitrate;
                if (j > i)
                    fprintf(out, ",");
                fprintf(out, "%s", track->codec_str);
            }
            fprintf(out, "\" mimeType=\"%s/mp4\" bandwidth=\"%d\"",
                    width ? "video" : "audio", bitrate);
            if (width > 0 && height > 0)
                fprintf(out, " width=\"%d\" height=\"%d\"", width, height);
            if (sample_rate > 0)
                fprintf(out, " audioSamplingRate=\"%d\"", sample_rate);
            fprintf(out, ">\n");
            if (channels > 0)
                fprintf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n", channels);
            fprintf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", first_track->name);
            fprintf(out, "\t\t\t\t<SegmentBase indexRange=\"%"PRId64"-%"PRId64"\" />\n", first_track->sidx_start, first_track->sidx_start + first_track->sidx_length - 1);
            fprintf(out, "\t\t\t</Representation>\n");
            i = j;
        }
        fprintf(out, "\t\t</AdaptationSet>\n");
    }
    fprintf(out, "\t</Period>\n");
    fprintf(out, "</MPD>\n");

    fclose(out);
err:
    for (i = 0; i < 2; i++)
        av_free(adaptation_sets_buf[i]);
    return ret;
}

static void clean_tracks(struct Tracks *tracks)
{
    int i;
    for (i = 0; i < tracks->nb_tracks; i++) {
        av_freep(&tracks->tracks[i]);
    }
    av_freep(&tracks->tracks);
    tracks->nb_tracks = 0;
}

int main(int argc, char **argv)
{
    const char *out = NULL;
    struct Tracks tracks = { 0 };
    int i;

    av_register_all();

    for (i = 1; i < argc; i++) {
        if (!strcmp(argv[i], "-out")) {
            out = argv[i + 1];
            i++;
        } else if (argv[i][0] == '-') {
            return usage(argv[0], 1);
        } else {
            if (handle_file(&tracks, argv[i]))
                return 1;
        }
    }
    if (!tracks.nb_tracks || !out)
        return usage(argv[0], 1);

    output_mpd(&tracks, out);

    clean_tracks(&tracks);

    return 0;
}
Commit	Line	Data
f6fa7814 DM	1	/*
	2	* Copyright (c) 2014 Martin Storsjo
	3	*
	4	* This file is part of FFmpeg.
	5	*
	6	* FFmpeg is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2.1 of the License, or (at your option) any later version.
	10	*
	11	* FFmpeg is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with FFmpeg; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	#include <stdio.h>
	22	#include <string.h>
	23
	24	#include "libavformat/avformat.h"
	25	#include "libavutil/avstring.h"
	26	#include "libavutil/intreadwrite.h"
	27	#include "libavutil/mathematics.h"
	28
	29	static int usage(const char *argv0, int ret)
	30	{
	31	fprintf(stderr, "%s -out foo.mpd file1\n", argv0);
	32	return ret;
	33	}
	34
	35	struct Track {
	36	const char *name;
	37	int64_t duration;
	38	int bitrate;
	39	int track_id;
	40	int is_audio, is_video;
	41	int width, height;
	42	int sample_rate, channels;
	43	int timescale;
	44	char codec_str[30];
	45	int64_t sidx_start, sidx_length;
	46	int64_t earliest_presentation;
	47	uint32_t earliest_presentation_timescale;
	48	};
	49
	50	struct Tracks {
	51	int nb_tracks;
	52	int64_t duration;
	53	struct Track **tracks;
	54	int multiple_tracks_per_file;
	55	};
	56
	57	static void set_codec_str(AVCodecContext codec, char str, int size)
	58	{
	59	switch (codec->codec_id) {
	60	case AV_CODEC_ID_H264:
	61	snprintf(str, size, "avc1");
	62	if (codec->extradata_size >= 4 && codec->extradata[0] == 1) {
	63	av_strlcatf(str, size, ".%02x%02x%02x",
	64	codec->extradata[1], codec->extradata[2], codec->extradata[3]);
65	}
66	break;
67	case AV_CODEC_ID_AAC:
68	snprintf(str, size, "mp4a.40"); // 0x40 is the mp4 object type for AAC
69	if (codec->extradata_size >= 2) {
70	int aot = codec->extradata[0] >> 3;
71	if (aot == 31)
72	aot = ((AV_RB16(codec->extradata) >> 5) & 0x3f) + 32;
73	av_strlcatf(str, size, ".%d", aot);
74	}
75	break;
76	}
77	}
78
79	static int find_sidx(struct Tracks *tracks, int start_index,
80	const char *file)
81	{
82	int err = 0;
83	AVIOContext *f = NULL;
84	int i;
85
86	if ((err = avio_open2(&f, file, AVIO_FLAG_READ, NULL, NULL)) < 0)
87	goto fail;
88
89	while (!f->eof_reached) {
90	int64_t pos = avio_tell(f);
91	int32_t size, tag;
92
93	size = avio_rb32(f);
94	tag = avio_rb32(f);
95	if (size < 8)
96	break;
97	if (tag == MKBETAG('s', 'i', 'd', 'x')) {
98	int version, track_id;
99	uint32_t timescale;
100	int64_t earliest_presentation;
101	version = avio_r8(f);
102	avio_rb24(f); /* flags */
103	track_id = avio_rb32(f);
104	timescale = avio_rb32(f);
105	earliest_presentation = version ? avio_rb64(f) : avio_rb32(f);
106	for (i = start_index; i < tracks->nb_tracks; i++) {
107	struct Track *track = tracks->tracks[i];
108	if (!track->sidx_start) {
109	track->sidx_start = pos;
110	track->sidx_length = size;
111	} else if (pos == track->sidx_start + track->sidx_length) {
112	track->sidx_length = pos + size - track->sidx_start;
113	}
114	if (track->track_id == track_id) {
115	track->earliest_presentation = earliest_presentation;
116	track->earliest_presentation_timescale = timescale;
117	}
118	}
119	}
120	if (avio_seek(f, pos + size, SEEK_SET) != pos + size)
121	break;
122	}
123
124	fail:
125	if (f)
126	avio_close(f);
127	return err;
128	}
129
130	static int handle_file(struct Tracks tracks, const char file)
131	{
132	AVFormatContext *ctx = NULL;
133	int err = 0, i, orig_tracks = tracks->nb_tracks;
134	char errbuf[50], *ptr;
135	struct Track *track;
136
137	err = avformat_open_input(&ctx, file, NULL, NULL);
138	if (err < 0) {
139	av_strerror(err, errbuf, sizeof(errbuf));
140	fprintf(stderr, "Unable to open %s: %s\n", file, errbuf);
141	return 1;
142	}
143
144	err = avformat_find_stream_info(ctx, NULL);
145	if (err < 0) {
146	av_strerror(err, errbuf, sizeof(errbuf));
147	fprintf(stderr, "Unable to identify %s: %s\n", file, errbuf);
148	goto fail;
149	}
150
151	if (ctx->nb_streams < 1) {
152	fprintf(stderr, "No streams found in %s\n", file);
153	goto fail;
154	}
155	if (ctx->nb_streams > 1)
156	tracks->multiple_tracks_per_file = 1;
157
158	for (i = 0; i < ctx->nb_streams; i++) {
159	struct Track **temp;
160	AVStream *st = ctx->streams[i];
161
162	if (st->codec->bit_rate == 0) {
163	fprintf(stderr, "Skipping track %d in %s as it has zero bitrate\n",
164	st->id, file);
165	continue;
166	}
167
168	track = av_mallocz(sizeof(*track));
169	if (!track) {
170	err = AVERROR(ENOMEM);
171	goto fail;
172	}
173	temp = av_realloc(tracks->tracks,
174	sizeof(tracks->tracks) (tracks->nb_tracks + 1));
175	if (!temp) {
176	av_free(track);
177	err = AVERROR(ENOMEM);
178	goto fail;
179	}
180	tracks->tracks = temp;
181	tracks->tracks[tracks->nb_tracks] = track;
182
183	track->name = file;
184	if ((ptr = strrchr(file, '/')))
185	track->name = ptr + 1;
186
187	track->bitrate = st->codec->bit_rate;
188	track->track_id = st->id;
189	track->timescale = st->time_base.den;
190	track->duration = st->duration;
191	track->is_audio = st->codec->codec_type == AVMEDIA_TYPE_AUDIO;
192	track->is_video = st->codec->codec_type == AVMEDIA_TYPE_VIDEO;
193
194	if (!track->is_audio && !track->is_video) {
195	fprintf(stderr,
196	"Track %d in %s is neither video nor audio, skipping\n",
197	track->track_id, file);
198	av_freep(&tracks->tracks[tracks->nb_tracks]);
199	continue;
200	}
201
202	tracks->duration = FFMAX(tracks->duration,
203	av_rescale_rnd(track->duration, AV_TIME_BASE,
204	track->timescale, AV_ROUND_UP));
205
206	if (track->is_audio) {
207	track->channels = st->codec->channels;
208	track->sample_rate = st->codec->sample_rate;
209	}
210	if (track->is_video) {
211	track->width = st->codec->width;
212	track->height = st->codec->height;
213	}
214	set_codec_str(st->codec, track->codec_str, sizeof(track->codec_str));
215
216	tracks->nb_tracks++;
217	}
218
219	avformat_close_input(&ctx);
220
221	err = find_sidx(tracks, orig_tracks, file);
222
223	fail:
224	if (ctx)
225	avformat_close_input(&ctx);
226	return err;
227	}
228
229	static void write_time(FILE *out, int64_t time, int decimals, enum AVRounding round)
230	{
231	int seconds = time / AV_TIME_BASE;
232	int fractions = time % AV_TIME_BASE;
233	int minutes = seconds / 60;
234	int hours = minutes / 60;
235	fractions = av_rescale_rnd(fractions, pow(10, decimals), AV_TIME_BASE, round);
236	seconds %= 60;
237	minutes %= 60;
238	fprintf(out, "PT");
239	if (hours)
240	fprintf(out, "%dH", hours);
241	if (hours \|\| minutes)
242	fprintf(out, "%dM", minutes);
243	fprintf(out, "%d.%0*dS", seconds, decimals, fractions);
244	}
245
246	static int output_mpd(struct Tracks tracks, const char filename)
247	{
248	FILE *out;
249	int i, j, ret = 0;
250	struct Track **adaptation_sets_buf[2] = { NULL };
251	struct Track ***adaptation_sets;
252	int nb_tracks_buf[2] = { 0 };
253	int *nb_tracks;
254	int set, nb_sets;
255	int64_t latest_start = 0;
256
257	if (!tracks->multiple_tracks_per_file) {
258	adaptation_sets = adaptation_sets_buf;
259	nb_tracks = nb_tracks_buf;
260	nb_sets = 2;
261	for (i = 0; i < 2; i++) {
262	adaptation_sets[i] = av_malloc(sizeof(adaptation_sets[i]) tracks->nb_tracks);
263	if (!adaptation_sets[i]) {
264	ret = AVERROR(ENOMEM);
265	goto err;
266	}
267	}
268	for (i = 0; i < tracks->nb_tracks; i++) {
269	int set_index = -1;
270	if (tracks->tracks[i]->is_video)
271	set_index = 0;
272	else if (tracks->tracks[i]->is_audio)
273	set_index = 1;
274	else
275	continue;
276	adaptation_sets[set_index][nb_tracks[set_index]++] = tracks->tracks[i];
277	}
278	} else {
279	adaptation_sets = &tracks->tracks;
280	nb_tracks = &tracks->nb_tracks;
281	nb_sets = 1;
282	}
283
284	out = fopen(filename, "w");
285	if (!out) {
286	ret = AVERROR(errno);
287	perror(filename);
288	return ret;
289	}
290	fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
291	fprintf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
292	"\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
293	"\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
294	"\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
295	"\tprofiles=\"urn:mpeg:dash:profile:isoff-on-demand:2011\"\n"
296	"\ttype=\"static\"\n");
297	fprintf(out, "\tmediaPresentationDuration=\"");
298	write_time(out, tracks->duration, 1, AV_ROUND_DOWN);
299	fprintf(out, "\"\n");
300	fprintf(out, "\tminBufferTime=\"PT5S\">\n");
301
302	for (i = 0; i < tracks->nb_tracks; i++) {
303	int64_t start = av_rescale_rnd(tracks->tracks[i]->earliest_presentation,
304	AV_TIME_BASE,
305	tracks->tracks[i]->earliest_presentation_timescale,
306	AV_ROUND_UP);
307	latest_start = FFMAX(start, latest_start);
308	}
309	fprintf(out, "\t<Period start=\"");
310	write_time(out, latest_start, 3, AV_ROUND_UP);
311	fprintf(out, "\">\n");
312
313
314	for (set = 0; set < nb_sets; set++) {
315	if (nb_tracks[set] == 0)
316	continue;
317	fprintf(out, "\t\t<AdaptationSet segmentAlignment=\"true\">\n");
318	if (nb_sets == 1) {
319	for (i = 0; i < nb_tracks[set]; i++) {
320	struct Track *track = adaptation_sets[set][i];
321	if (strcmp(track->name, adaptation_sets[set][0]->name))
322	break;
323	fprintf(out, "\t\t\t<ContentComponent id=\"%d\" contentType=\"%s\" />\n", track->track_id, track->is_audio ? "audio" : "video");
324	}
325	}
326
327	for (i = 0; i < nb_tracks[set]; ) {
328	struct Track *first_track = adaptation_sets[set][i];
329	int width = 0, height = 0, sample_rate = 0, channels = 0, bitrate = 0;
330	fprintf(out, "\t\t\t<Representation id=\"%d\" codecs=\"", i);
331	for (j = i; j < nb_tracks[set]; j++) {
332	struct Track *track = adaptation_sets[set][j];
333	if (strcmp(track->name, first_track->name))
334	break;
335	if (track->is_audio) {
336	sample_rate = track->sample_rate;
337	channels = track->channels;
338	}
339	if (track->is_video) {
340	width = track->width;
341	height = track->height;
342	}
343	bitrate += track->bitrate;
344	if (j > i)
345	fprintf(out, ",");
346	fprintf(out, "%s", track->codec_str);
347	}
348	fprintf(out, "\" mimeType=\"%s/mp4\" bandwidth=\"%d\"",
349	width ? "video" : "audio", bitrate);
350	if (width > 0 && height > 0)
351	fprintf(out, " width=\"%d\" height=\"%d\"", width, height);
352	if (sample_rate > 0)
353	fprintf(out, " audioSamplingRate=\"%d\"", sample_rate);
354	fprintf(out, ">\n");
355	if (channels > 0)
356	fprintf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n", channels);
357	fprintf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", first_track->name);
358	fprintf(out, "\t\t\t\t<SegmentBase indexRange=\"%"PRId64"-%"PRId64"\" />\n", first_track->sidx_start, first_track->sidx_start + first_track->sidx_length - 1);
359	fprintf(out, "\t\t\t</Representation>\n");
360	i = j;
361	}
362	fprintf(out, "\t\t</AdaptationSet>\n");
363	}
364	fprintf(out, "\t</Period>\n");
365	fprintf(out, "</MPD>\n");
366
367	fclose(out);
368	err:
369	for (i = 0; i < 2; i++)
370	av_free(adaptation_sets_buf[i]);
371	return ret;
372	}
373
374	static void clean_tracks(struct Tracks *tracks)
375	{
376	int i;
377	for (i = 0; i < tracks->nb_tracks; i++) {
378	av_freep(&tracks->tracks[i]);
379	}
380	av_freep(&tracks->tracks);
381	tracks->nb_tracks = 0;
382	}
383
384	int main(int argc, char **argv)
385	{
386	const char *out = NULL;
387	struct Tracks tracks = { 0 };
388	int i;
389
390	av_register_all();
391
392	for (i = 1; i < argc; i++) {
393	if (!strcmp(argv[i], "-out")) {
394	out = argv[i + 1];
395	i++;
396	} else if (argv[i][0] == '-') {
397	return usage(argv[0], 1);
398	} else {
399	if (handle_file(&tracks, argv[i]))
400	return 1;
401	}
402	}
403	if (!tracks.nb_tracks \|\| !out)
404	return usage(argv[0], 1);
405
406	output_mpd(&tracks, out);
407
408	clean_tracks(&tracks);
409
410	return 0;
411	}