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FFmpeg/tools/ismindex.c
Mika Raento 00431bf874 ismindex: handle time discontinuities and nonzero start time 
The input file may not have consistent start times, stream durations and
chunk durations. This patch at least removes negative durations that
make chromecast unhappy, and correctly sets starting time on chunks so
that the split (or .ismf) outputs match the manifest.

Signed-off-by: Martin Storsjö <martin@martin.st>
2014-09-15 19:54:36 +03:00

740 lines
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/*
* Copyright (c) 2012 Martin Storsjo
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
* To create a simple file for smooth streaming:
* avconv <normal input/transcoding options> -movflags frag_keyframe foo.ismv
* ismindex -n foo foo.ismv
* This step creates foo.ism and foo.ismc that is required by IIS for
* serving it.
*
* With -ismf, it also creates foo.ismf, which maps fragment names to
* start-end offsets in the ismv, for use in your own streaming server.
*
* By adding -path-prefix path/, the produced foo.ism will refer to the
* files foo.ismv as "path/foo.ismv" - the prefix for the generated ismc
* file can be set with the -ismc-prefix option similarly.
*
* To pre-split files for serving as static files by a web server without
* any extra server support, create the ismv file as above, and split it:
* ismindex -split foo.ismv
* This step creates a file Manifest and directories QualityLevel(...),
* that can be read directly by a smooth streaming player.
*
* The -output dir option can be used to request that output files
* (both .ism/.ismc, or Manifest/QualityLevels* when splitting)
* should be written to this directory instead of in the current directory.
* (The directory itself isn't created if it doesn't already exist.)
*/
#include <stdio.h>
#include <string.h>
#include "libavformat/avformat.h"
#include "libavformat/os_support.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
static int usage(const char *argv0, int ret)
{
fprintf(stderr, "%s [-split] [-ismf] [-n basename] [-path-prefix prefix] "
"[-ismc-prefix prefix] [-output dir] file1 [file2] ...\n", argv0);
return ret;
}
struct MoofOffset {
int64_t time;
int64_t offset;
int64_t duration;
};
struct Track {
const char *name;
int64_t duration;
int bitrate;
int track_id;
int is_audio, is_video;
int width, height;
int chunks;
int sample_rate, channels;
uint8_t *codec_private;
int codec_private_size;
struct MoofOffset *offsets;
int timescale;
const char *fourcc;
int blocksize;
int tag;
};
struct Tracks {
int nb_tracks;
int64_t duration;
struct Track **tracks;
int video_track, audio_track;
int nb_video_tracks, nb_audio_tracks;
};
static int expect_tag(int32_t got_tag, int32_t expected_tag) {
if (got_tag != expected_tag) {
char got_tag_str[4], expected_tag_str[4];
AV_WB32(got_tag_str, got_tag);
AV_WB32(expected_tag_str, expected_tag);
fprintf(stderr, "wanted tag %.4s, got %.4s\n", expected_tag_str,
got_tag_str);
return -1;
}
return 0;
}
static int copy_tag(AVIOContext *in, AVIOContext *out, int32_t tag_name)
{
int32_t size, tag;
size = avio_rb32(in);
tag = avio_rb32(in);
avio_wb32(out, size);
avio_wb32(out, tag);
if (expect_tag(tag, tag_name) != 0)
return -1;
size -= 8;
while (size > 0) {
char buf[1024];
int len = FFMIN(sizeof(buf), size);
int got;
if ((got = avio_read(in, buf, len)) != len) {
fprintf(stderr, "short read, wanted %d, got %d\n", len, got);
break;
}
avio_write(out, buf, len);
size -= len;
}
return 0;
}
static int skip_tag(AVIOContext *in, int32_t tag_name)
{
int64_t pos = avio_tell(in);
int32_t size, tag;
size = avio_rb32(in);
tag = avio_rb32(in);
if (expect_tag(tag, tag_name) != 0)
return -1;
avio_seek(in, pos + size, SEEK_SET);
return 0;
}
static int write_fragment(const char *filename, AVIOContext *in)
{
AVIOContext *out = NULL;
int ret;
if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, NULL, NULL)) < 0) {
char errbuf[100];
av_strerror(ret, errbuf, sizeof(errbuf));
fprintf(stderr, "Unable to open %s: %s\n", filename, errbuf);
return ret;
}
ret = copy_tag(in, out, MKBETAG('m', 'o', 'o', 'f'));
if (!ret)
ret = copy_tag(in, out, MKBETAG('m', 'd', 'a', 't'));
avio_flush(out);
avio_close(out);
return ret;
}
static int skip_fragment(AVIOContext *in)
{
int ret;
ret = skip_tag(in, MKBETAG('m', 'o', 'o', 'f'));
if (!ret)
ret = skip_tag(in, MKBETAG('m', 'd', 'a', 't'));
return ret;
}
static int write_fragments(struct Tracks *tracks, int start_index,
AVIOContext *in, const char *basename,
int split, int ismf, const char* output_prefix)
{
char dirname[2048], filename[2048], idxname[2048];
int i, j, ret = 0, fragment_ret;
FILE* out = NULL;
if (ismf) {
snprintf(idxname, sizeof(idxname), "%s%s.ismf", output_prefix, basename);
out = fopen(idxname, "w");
if (!out) {
ret = AVERROR(errno);
perror(idxname);
goto fail;
}
}
for (i = start_index; i < tracks->nb_tracks; i++) {
struct Track *track = tracks->tracks[i];
const char *type = track->is_video ? "video" : "audio";
snprintf(dirname, sizeof(dirname), "%sQualityLevels(%d)", output_prefix, track->bitrate);
if (split) {
if (mkdir(dirname, 0777) == -1 && errno != EEXIST) {
ret = AVERROR(errno);
perror(dirname);
goto fail;
}
}
for (j = 0; j < track->chunks; j++) {
snprintf(filename, sizeof(filename), "%s/Fragments(%s=%"PRId64")",
dirname, type, track->offsets[j].time);
avio_seek(in, track->offsets[j].offset, SEEK_SET);
if (ismf)
fprintf(out, "%s %"PRId64, filename, avio_tell(in));
if (split)
fragment_ret = write_fragment(filename, in);
else
fragment_ret = skip_fragment(in);
if (ismf)
fprintf(out, " %"PRId64"\n", avio_tell(in));
if (fragment_ret != 0) {
fprintf(stderr, "failed fragment %d in track %d (%s)\n", j,
track->track_id, track->name);
ret = fragment_ret;
}
}
}
fail:
if (out)
fclose(out);
return ret;
}
static int read_tfra(struct Tracks *tracks, int start_index, AVIOContext *f)
{
int ret = AVERROR_EOF, track_id;
int version, fieldlength, i, j;
int64_t pos = avio_tell(f);
uint32_t size = avio_rb32(f);
struct Track *track = NULL;
if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a'))
goto fail;
version = avio_r8(f);
avio_rb24(f);
track_id = avio_rb32(f); /* track id */
for (i = start_index; i < tracks->nb_tracks && !track; i++)
if (tracks->tracks[i]->track_id == track_id)
track = tracks->tracks[i];
if (!track) {
/* Ok, continue parsing the next atom */
ret = 0;
goto fail;
}
fieldlength = avio_rb32(f);
track->chunks = avio_rb32(f);
track->offsets = av_mallocz(sizeof(*track->offsets) * track->chunks);
if (!track->offsets) {
ret = AVERROR(ENOMEM);
goto fail;
}
// The duration here is always the difference between consecutive
// start times and doesn't even try to read the actual duration of the
// media fragments. This is what other smooth streaming tools tend to
// do too, but cannot express missing fragments, and the start times
// may not match the stream metadata we get from libavformat. Correct
// calculation would require parsing the tfxd atom (if present, it's
// not mandatory) or parsing the full moof atoms separately.
for (i = 0; i < track->chunks; i++) {
if (version == 1) {
track->offsets[i].time = avio_rb64(f);
track->offsets[i].offset = avio_rb64(f);
} else {
track->offsets[i].time = avio_rb32(f);
track->offsets[i].offset = avio_rb32(f);
}
for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
avio_r8(f);
for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
avio_r8(f);
for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
avio_r8(f);
if (i > 0)
track->offsets[i - 1].duration = track->offsets[i].time -
track->offsets[i - 1].time;
}
if (track->chunks > 0) {
track->offsets[track->chunks - 1].duration = track->offsets[0].time +
track->duration -
track->offsets[track->chunks - 1].time;
if (track->offsets[track->chunks - 1].duration <= 0) {
fprintf(stderr, "Calculated last chunk duration for track %d "
"was non-positive (%"PRId64"), probably due to missing "
"fragments ", track->track_id,
track->offsets[track->chunks - 1].duration);
if (track->chunks > 1) {
track->offsets[track->chunks - 1].duration =
track->offsets[track->chunks - 2].duration;
} else {
track->offsets[track->chunks - 1].duration = 1;
}
fprintf(stderr, "corrected to %"PRId64"\n",
track->offsets[track->chunks - 1].duration);
track->duration = track->offsets[track->chunks - 1].time +
track->offsets[track->chunks - 1].duration -
track->offsets[0].time;
fprintf(stderr, "Track duration corrected to %"PRId64"\n",
track->duration);
}
}
ret = 0;
fail:
avio_seek(f, pos + size, SEEK_SET);
return ret;
}
static int read_mfra(struct Tracks *tracks, int start_index,
const char *file, int split, int ismf,
const char *basename, const char* output_prefix)
{
int err = 0;
const char* err_str = "";
AVIOContext *f = NULL;
int32_t mfra_size;
if ((err = avio_open2(&f, file, AVIO_FLAG_READ, NULL, NULL)) < 0)
goto fail;
avio_seek(f, avio_size(f) - 4, SEEK_SET);
mfra_size = avio_rb32(f);
avio_seek(f, -mfra_size, SEEK_CUR);
if (avio_rb32(f) != mfra_size) {
err = AVERROR_INVALIDDATA;
err_str = "mfra size mismatch";
goto fail;
}
if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
err = AVERROR_INVALIDDATA;
err_str = "mfra tag mismatch";
goto fail;
}
while (!read_tfra(tracks, start_index, f)) {
/* Empty */
}
if (split || ismf)
err = write_fragments(tracks, start_index, f, basename, split, ismf,
output_prefix);
err_str = "error in write_fragments";
fail:
if (f)
avio_close(f);
if (err)
fprintf(stderr, "Unable to read the MFRA atom in %s (%s)\n", file, err_str);
return err;
}
static int get_private_data(struct Track *track, AVCodecContext *codec)
{
track->codec_private_size = codec->extradata_size;
track->codec_private = av_mallocz(codec->extradata_size);
if (!track->codec_private)
return AVERROR(ENOMEM);
memcpy(track->codec_private, codec->extradata, codec->extradata_size);
return 0;
}
static int get_video_private_data(struct Track *track, AVCodecContext *codec)
{
AVIOContext *io = NULL;
uint16_t sps_size, pps_size;
int err;
if (codec->codec_id == AV_CODEC_ID_VC1)
return get_private_data(track, codec);
if ((err = avio_open_dyn_buf(&io)) < 0)
goto fail;
err = AVERROR(EINVAL);
if (codec->extradata_size < 11 || codec->extradata[0] != 1)
goto fail;
sps_size = AV_RB16(&codec->extradata[6]);
if (11 + sps_size > codec->extradata_size)
goto fail;
avio_wb32(io, 0x00000001);
avio_write(io, &codec->extradata[8], sps_size);
pps_size = AV_RB16(&codec->extradata[9 + sps_size]);
if (11 + sps_size + pps_size > codec->extradata_size)
goto fail;
avio_wb32(io, 0x00000001);
avio_write(io, &codec->extradata[11 + sps_size], pps_size);
err = 0;
fail:
track->codec_private_size = avio_close_dyn_buf(io, &track->codec_private);
return err;
}
static int handle_file(struct Tracks *tracks, const char *file, int split,
int ismf, const char *basename,
const char* output_prefix)
{
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;
}
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) {
if (tracks->audio_track < 0)
tracks->audio_track = tracks->nb_tracks;
tracks->nb_audio_tracks++;
track->channels = st->codec->channels;
track->sample_rate = st->codec->sample_rate;
if (st->codec->codec_id == AV_CODEC_ID_AAC) {
track->fourcc = "AACL";
track->tag = 255;
track->blocksize = 4;
} else if (st->codec->codec_id == AV_CODEC_ID_WMAPRO) {
track->fourcc = "WMAP";
track->tag = st->codec->codec_tag;
track->blocksize = st->codec->block_align;
}
get_private_data(track, st->codec);
}
if (track->is_video) {
if (tracks->video_track < 0)
tracks->video_track = tracks->nb_tracks;
tracks->nb_video_tracks++;
track->width = st->codec->width;
track->height = st->codec->height;
if (st->codec->codec_id == AV_CODEC_ID_H264)
track->fourcc = "H264";
else if (st->codec->codec_id == AV_CODEC_ID_VC1)
track->fourcc = "WVC1";
get_video_private_data(track, st->codec);
}
tracks->nb_tracks++;
}
avformat_close_input(&ctx);
err = read_mfra(tracks, orig_tracks, file, split, ismf, basename,
output_prefix);
fail:
if (ctx)
avformat_close_input(&ctx);
return err;
}
static void output_server_manifest(struct Tracks *tracks, const char *basename,
const char *output_prefix,
const char *path_prefix,
const char *ismc_prefix)
{
char filename[1000];
FILE *out;
int i;
snprintf(filename, sizeof(filename), "%s%s.ism", output_prefix, basename);
out = fopen(filename, "w");
if (!out) {
perror(filename);
return;
}
fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
fprintf(out, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
fprintf(out, "\t<head>\n");
fprintf(out, "\t\t<meta name=\"clientManifestRelativePath\" "
"content=\"%s%s.ismc\" />\n", ismc_prefix, basename);
fprintf(out, "\t</head>\n");
fprintf(out, "\t<body>\n");
fprintf(out, "\t\t<switch>\n");
for (i = 0; i < tracks->nb_tracks; i++) {
struct Track *track = tracks->tracks[i];
const char *type = track->is_video ? "video" : "audio";
fprintf(out, "\t\t\t<%s src=\"%s%s\" systemBitrate=\"%d\">\n",
type, path_prefix, track->name, track->bitrate);
fprintf(out, "\t\t\t\t<param name=\"trackID\" value=\"%d\" "
"valueType=\"data\" />\n", track->track_id);
fprintf(out, "\t\t\t</%s>\n", type);
}
fprintf(out, "\t\t</switch>\n");
fprintf(out, "\t</body>\n");
fprintf(out, "</smil>\n");
fclose(out);
}
static void print_track_chunks(FILE *out, struct Tracks *tracks, int main,
const char *type)
{
int i, j;
int64_t pos = 0;
struct Track *track = tracks->tracks[main];
int should_print_time_mismatch = 1;
for (i = 0; i < track->chunks; i++) {
for (j = main + 1; j < tracks->nb_tracks; j++) {
if (tracks->tracks[j]->is_audio == track->is_audio) {
if (track->offsets[i].duration != tracks->tracks[j]->offsets[i].duration) {
fprintf(stderr, "Mismatched duration of %s chunk %d in %s (%d) and %s (%d)\n",
type, i, track->name, main, tracks->tracks[j]->name, j);
should_print_time_mismatch = 1;
}
if (track->offsets[i].time != tracks->tracks[j]->offsets[i].time) {
if (should_print_time_mismatch)
fprintf(stderr, "Mismatched (start) time of %s chunk %d in %s (%d) and %s (%d)\n",
type, i, track->name, main, tracks->tracks[j]->name, j);
should_print_time_mismatch = 0;
}
}
}
fprintf(out, "\t\t<c n=\"%d\" d=\"%"PRId64"\" ",
i, track->offsets[i].duration);
if (pos != track->offsets[i].time) {
// With the current logic for calculation of durations from
// chunk start times, this branch can only be hit on the first
// chunk - but that's still useful and this will keep working
// if the duration calculation is improved.
fprintf(out, "t=\"%"PRId64"\" ", track->offsets[i].time);
pos = track->offsets[i].time;
}
pos += track->offsets[i].duration;
fprintf(out, "/>\n");
}
}
static void output_client_manifest(struct Tracks *tracks, const char *basename,
const char *output_prefix, int split)
{
char filename[1000];
FILE *out;
int i, j;
if (split)
snprintf(filename, sizeof(filename), "%sManifest", output_prefix);
else
snprintf(filename, sizeof(filename), "%s%s.ismc", output_prefix, basename);
out = fopen(filename, "w");
if (!out) {
perror(filename);
return;
}
fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
fprintf(out, "<SmoothStreamingMedia MajorVersion=\"2\" MinorVersion=\"0\" "
"Duration=\"%"PRId64 "\">\n", tracks->duration * 10);
if (tracks->video_track >= 0) {
struct Track *track = tracks->tracks[tracks->video_track];
struct Track *first_track = track;
int index = 0;
fprintf(out,
"\t<StreamIndex Type=\"video\" QualityLevels=\"%d\" "
"Chunks=\"%d\" "
"Url=\"QualityLevels({bitrate})/Fragments(video={start time})\">\n",
tracks->nb_video_tracks, track->chunks);
for (i = 0; i < tracks->nb_tracks; i++) {
track = tracks->tracks[i];
if (!track->is_video)
continue;
fprintf(out,
"\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
"FourCC=\"%s\" MaxWidth=\"%d\" MaxHeight=\"%d\" "
"CodecPrivateData=\"",
index, track->bitrate, track->fourcc, track->width, track->height);
for (j = 0; j < track->codec_private_size; j++)
fprintf(out, "%02X", track->codec_private[j]);
fprintf(out, "\" />\n");
index++;
if (track->chunks != first_track->chunks)
fprintf(stderr, "Mismatched number of video chunks in %s (id: %d, chunks %d) and %s (id: %d, chunks %d)\n",
track->name, track->track_id, track->chunks, first_track->name, first_track->track_id, first_track->chunks);
}
print_track_chunks(out, tracks, tracks->video_track, "video");
fprintf(out, "\t</StreamIndex>\n");
}
if (tracks->audio_track >= 0) {
struct Track *track = tracks->tracks[tracks->audio_track];
struct Track *first_track = track;
int index = 0;
fprintf(out,
"\t<StreamIndex Type=\"audio\" QualityLevels=\"%d\" "
"Chunks=\"%d\" "
"Url=\"QualityLevels({bitrate})/Fragments(audio={start time})\">\n",
tracks->nb_audio_tracks, track->chunks);
for (i = 0; i < tracks->nb_tracks; i++) {
track = tracks->tracks[i];
if (!track->is_audio)
continue;
fprintf(out,
"\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
"FourCC=\"%s\" SamplingRate=\"%d\" Channels=\"%d\" "
"BitsPerSample=\"16\" PacketSize=\"%d\" "
"AudioTag=\"%d\" CodecPrivateData=\"",
index, track->bitrate, track->fourcc, track->sample_rate,
track->channels, track->blocksize, track->tag);
for (j = 0; j < track->codec_private_size; j++)
fprintf(out, "%02X", track->codec_private[j]);
fprintf(out, "\" />\n");
index++;
if (track->chunks != first_track->chunks)
fprintf(stderr, "Mismatched number of audio chunks in %s and %s\n",
track->name, first_track->name);
}
print_track_chunks(out, tracks, tracks->audio_track, "audio");
fprintf(out, "\t</StreamIndex>\n");
}
fprintf(out, "</SmoothStreamingMedia>\n");
fclose(out);
}
static void clean_tracks(struct Tracks *tracks)
{
int i;
for (i = 0; i < tracks->nb_tracks; i++) {
av_freep(&tracks->tracks[i]->codec_private);
av_freep(&tracks->tracks[i]->offsets);
av_freep(&tracks->tracks[i]);
}
av_freep(&tracks->tracks);
tracks->nb_tracks = 0;
}
int main(int argc, char **argv)
{
const char *basename = NULL;
const char *path_prefix = "", *ismc_prefix = "";
const char *output_prefix = "";
char output_prefix_buf[2048];
int split = 0, ismf = 0, i;
struct Tracks tracks = { 0, .video_track = -1, .audio_track = -1 };
av_register_all();
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "-n")) {
basename = argv[i + 1];
i++;
} else if (!strcmp(argv[i], "-path-prefix")) {
path_prefix = argv[i + 1];
i++;
} else if (!strcmp(argv[i], "-ismc-prefix")) {
ismc_prefix = argv[i + 1];
i++;
} else if (!strcmp(argv[i], "-output")) {
output_prefix = argv[i + 1];
i++;
if (output_prefix[strlen(output_prefix) - 1] != '/') {
snprintf(output_prefix_buf, sizeof(output_prefix_buf),
"%s/", output_prefix);
output_prefix = output_prefix_buf;
}
} else if (!strcmp(argv[i], "-split")) {
split = 1;
} else if (!strcmp(argv[i], "-ismf")) {
ismf = 1;
} else if (argv[i][0] == '-') {
return usage(argv[0], 1);
} else {
if (!basename)
ismf = 0;
if (handle_file(&tracks, argv[i], split, ismf,
basename, output_prefix))
return 1;
}
}
if (!tracks.nb_tracks || (!basename && !split))
return usage(argv[0], 1);
if (!split)
output_server_manifest(&tracks, basename, output_prefix,
path_prefix, ismc_prefix);
output_client_manifest(&tracks, basename, output_prefix, split);
clean_tracks(&tracks);
return 0;
}
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