yading@11: /*
yading@11:  * Copyright (c) 2012 Martin Storsjo
yading@11:  *
yading@11:  * This file is part of Libav.
yading@11:  *
yading@11:  * Libav is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * Libav is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with Libav; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: /*
yading@11:  * To create a simple file for smooth streaming:
yading@11:  * ffmpeg <normal input/transcoding options> -movflags frag_keyframe foo.ismv
yading@11:  * ismindex -n foo foo.ismv
yading@11:  * This step creates foo.ism and foo.ismc that is required by IIS for
yading@11:  * serving it.
yading@11:  *
yading@11:  * To pre-split files for serving as static files by a web server without
yading@11:  * any extra server support, create the ismv file as above, and split it:
yading@11:  * ismindex -split foo.ismv
yading@11:  * This step creates a file Manifest and directories QualityLevel(...),
yading@11:  * that can be read directly by a smooth streaming player.
yading@11:  */
yading@11: 
yading@11: #include <stdio.h>
yading@11: #include <string.h>
yading@11: #include <sys/stat.h>
yading@11: #ifdef _WIN32
yading@11: #include <direct.h>
yading@11: #define mkdir(a, b) _mkdir(a)
yading@11: #endif
yading@11: 
yading@11: #include "cmdutils.h"
yading@11: 
yading@11: #include "libavformat/avformat.h"
yading@11: #include "libavutil/intreadwrite.h"
yading@11: #include "libavutil/mathematics.h"
yading@11: 
yading@11: static int usage(const char *argv0, int ret)
yading@11: {
yading@11:     fprintf(stderr, "%s [-split] [-n basename] file1 [file2] ...\n", argv0);
yading@11:     return ret;
yading@11: }
yading@11: 
yading@11: struct MoofOffset {
yading@11:     int64_t time;
yading@11:     int64_t offset;
yading@11:     int duration;
yading@11: };
yading@11: 
yading@11: struct Track {
yading@11:     const char *name;
yading@11:     int64_t duration;
yading@11:     int bitrate;
yading@11:     int track_id;
yading@11:     int is_audio, is_video;
yading@11:     int width, height;
yading@11:     int chunks;
yading@11:     int sample_rate, channels;
yading@11:     uint8_t *codec_private;
yading@11:     int codec_private_size;
yading@11:     struct MoofOffset *offsets;
yading@11:     int timescale;
yading@11:     const char *fourcc;
yading@11:     int blocksize;
yading@11:     int tag;
yading@11: };
yading@11: 
yading@11: struct Tracks {
yading@11:     int nb_tracks;
yading@11:     int64_t duration;
yading@11:     struct Track **tracks;
yading@11:     int video_track, audio_track;
yading@11:     int nb_video_tracks, nb_audio_tracks;
yading@11: };
yading@11: 
yading@11: static int copy_tag(AVIOContext *in, AVIOContext *out, int32_t tag_name)
yading@11: {
yading@11:     int32_t size, tag;
yading@11: 
yading@11:     size = avio_rb32(in);
yading@11:     tag  = avio_rb32(in);
yading@11:     avio_wb32(out, size);
yading@11:     avio_wb32(out, tag);
yading@11:     if (tag != tag_name)
yading@11:         return -1;
yading@11:     size -= 8;
yading@11:     while (size > 0) {
yading@11:         char buf[1024];
yading@11:         int len = FFMIN(sizeof(buf), size);
yading@11:         if (avio_read(in, buf, len) != len)
yading@11:             break;
yading@11:         avio_write(out, buf, len);
yading@11:         size -= len;
yading@11:     }
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: static int write_fragment(const char *filename, AVIOContext *in)
yading@11: {
yading@11:     AVIOContext *out = NULL;
yading@11:     int ret;
yading@11: 
yading@11:     if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, NULL, NULL)) < 0)
yading@11:         return ret;
yading@11:     copy_tag(in, out, MKBETAG('m', 'o', 'o', 'f'));
yading@11:     copy_tag(in, out, MKBETAG('m', 'd', 'a', 't'));
yading@11: 
yading@11:     avio_flush(out);
yading@11:     avio_close(out);
yading@11: 
yading@11:     return ret;
yading@11: }
yading@11: 
yading@11: static int write_fragments(struct Tracks *tracks, int start_index,
yading@11:                            AVIOContext *in)
yading@11: {
yading@11:     char dirname[100], filename[500];
yading@11:     int i, j;
yading@11: 
yading@11:     for (i = start_index; i < tracks->nb_tracks; i++) {
yading@11:         struct Track *track = tracks->tracks[i];
yading@11:         const char *type    = track->is_video ? "video" : "audio";
yading@11:         snprintf(dirname, sizeof(dirname), "QualityLevels(%d)", track->bitrate);
yading@11:         mkdir(dirname, 0777);
yading@11:         for (j = 0; j < track->chunks; j++) {
yading@11:             snprintf(filename, sizeof(filename), "%s/Fragments(%s=%"PRId64")",
yading@11:                      dirname, type, track->offsets[j].time);
yading@11:             avio_seek(in, track->offsets[j].offset, SEEK_SET);
yading@11:             write_fragment(filename, in);
yading@11:         }
yading@11:     }
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: static int read_tfra(struct Tracks *tracks, int start_index, AVIOContext *f)
yading@11: {
yading@11:     int ret = AVERROR_EOF, track_id;
yading@11:     int version, fieldlength, i, j;
yading@11:     int64_t pos   = avio_tell(f);
yading@11:     uint32_t size = avio_rb32(f);
yading@11:     struct Track *track = NULL;
yading@11: 
yading@11:     if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a'))
yading@11:         goto fail;
yading@11:     version = avio_r8(f);
yading@11:     avio_rb24(f);
yading@11:     track_id = avio_rb32(f); /* track id */
yading@11:     for (i = start_index; i < tracks->nb_tracks && !track; i++)
yading@11:         if (tracks->tracks[i]->track_id == track_id)
yading@11:             track = tracks->tracks[i];
yading@11:     if (!track) {
yading@11:         /* Ok, continue parsing the next atom */
yading@11:         ret = 0;
yading@11:         goto fail;
yading@11:     }
yading@11:     fieldlength = avio_rb32(f);
yading@11:     track->chunks  = avio_rb32(f);
yading@11:     track->offsets = av_mallocz(sizeof(*track->offsets) * track->chunks);
yading@11:     if (!track->offsets) {
yading@11:         ret = AVERROR(ENOMEM);
yading@11:         goto fail;
yading@11:     }
yading@11:     for (i = 0; i < track->chunks; i++) {
yading@11:         if (version == 1) {
yading@11:             track->offsets[i].time   = avio_rb64(f);
yading@11:             track->offsets[i].offset = avio_rb64(f);
yading@11:         } else {
yading@11:             track->offsets[i].time   = avio_rb32(f);
yading@11:             track->offsets[i].offset = avio_rb32(f);
yading@11:         }
yading@11:         for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
yading@11:             avio_r8(f);
yading@11:         for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
yading@11:             avio_r8(f);
yading@11:         for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
yading@11:             avio_r8(f);
yading@11:         if (i > 0)
yading@11:             track->offsets[i - 1].duration = track->offsets[i].time -
yading@11:                                              track->offsets[i - 1].time;
yading@11:     }
yading@11:     if (track->chunks > 0)
yading@11:         track->offsets[track->chunks - 1].duration = track->duration -
yading@11:                                                      track->offsets[track->chunks - 1].time;
yading@11:     ret = 0;
yading@11: 
yading@11: fail:
yading@11:     avio_seek(f, pos + size, SEEK_SET);
yading@11:     return ret;
yading@11: }
yading@11: 
yading@11: static int read_mfra(struct Tracks *tracks, int start_index,
yading@11:                      const char *file, int split)
yading@11: {
yading@11:     int err = 0;
yading@11:     AVIOContext *f = NULL;
yading@11:     int32_t mfra_size;
yading@11: 
yading@11:     if ((err = avio_open2(&f, file, AVIO_FLAG_READ, NULL, NULL)) < 0)
yading@11:         goto fail;
yading@11:     avio_seek(f, avio_size(f) - 4, SEEK_SET);
yading@11:     mfra_size = avio_rb32(f);
yading@11:     avio_seek(f, -mfra_size, SEEK_CUR);
yading@11:     if (avio_rb32(f) != mfra_size) {
yading@11:         err = AVERROR_INVALIDDATA;
yading@11:         goto fail;
yading@11:     }
yading@11:     if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
yading@11:         err = AVERROR_INVALIDDATA;
yading@11:         goto fail;
yading@11:     }
yading@11:     while (!read_tfra(tracks, start_index, f)) {
yading@11:         /* Empty */
yading@11:     }
yading@11: 
yading@11:     if (split)
yading@11:         write_fragments(tracks, start_index, f);
yading@11: 
yading@11: fail:
yading@11:     if (f)
yading@11:         avio_close(f);
yading@11:     if (err)
yading@11:         fprintf(stderr, "Unable to read the MFRA atom in %s\n", file);
yading@11:     return err;
yading@11: }
yading@11: 
yading@11: static int get_private_data(struct Track *track, AVCodecContext *codec)
yading@11: {
yading@11:     track->codec_private_size = codec->extradata_size;
yading@11:     track->codec_private      = av_mallocz(codec->extradata_size);
yading@11:     if (!track->codec_private)
yading@11:         return AVERROR(ENOMEM);
yading@11:     memcpy(track->codec_private, codec->extradata, codec->extradata_size);
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: static int get_video_private_data(struct Track *track, AVCodecContext *codec)
yading@11: {
yading@11:     AVIOContext *io = NULL;
yading@11:     uint16_t sps_size, pps_size;
yading@11:     int err = AVERROR(EINVAL);
yading@11: 
yading@11:     if (codec->codec_id == AV_CODEC_ID_VC1)
yading@11:         return get_private_data(track, codec);
yading@11: 
yading@11:     if (avio_open_dyn_buf(&io) < 0)  {
yading@11:         err = AVERROR(ENOMEM);
yading@11:         goto fail;
yading@11:     }
yading@11:     if (codec->extradata_size < 11 || codec->extradata[0] != 1)
yading@11:         goto fail;
yading@11:     sps_size = AV_RB16(&codec->extradata[6]);
yading@11:     if (11 + sps_size > codec->extradata_size)
yading@11:         goto fail;
yading@11:     avio_wb32(io, 0x00000001);
yading@11:     avio_write(io, &codec->extradata[8], sps_size);
yading@11:     pps_size = AV_RB16(&codec->extradata[9 + sps_size]);
yading@11:     if (11 + sps_size + pps_size > codec->extradata_size)
yading@11:         goto fail;
yading@11:     avio_wb32(io, 0x00000001);
yading@11:     avio_write(io, &codec->extradata[11 + sps_size], pps_size);
yading@11:     err = 0;
yading@11: 
yading@11: fail:
yading@11:     track->codec_private_size = avio_close_dyn_buf(io, &track->codec_private);
yading@11:     return err;
yading@11: }
yading@11: 
yading@11: static int handle_file(struct Tracks *tracks, const char *file, int split)
yading@11: {
yading@11:     AVFormatContext *ctx = NULL;
yading@11:     int err = 0, i, orig_tracks = tracks->nb_tracks;
yading@11:     char errbuf[50], *ptr;
yading@11:     struct Track *track;
yading@11: 
yading@11:     err = avformat_open_input(&ctx, file, NULL, NULL);
yading@11:     if (err < 0) {
yading@11:         av_strerror(err, errbuf, sizeof(errbuf));
yading@11:         fprintf(stderr, "Unable to open %s: %s\n", file, errbuf);
yading@11:         return 1;
yading@11:     }
yading@11: 
yading@11:     err = avformat_find_stream_info(ctx, NULL);
yading@11:     if (err < 0) {
yading@11:         av_strerror(err, errbuf, sizeof(errbuf));
yading@11:         fprintf(stderr, "Unable to identify %s: %s\n", file, errbuf);
yading@11:         goto fail;
yading@11:     }
yading@11: 
yading@11:     if (ctx->nb_streams < 1) {
yading@11:         fprintf(stderr, "No streams found in %s\n", file);
yading@11:         goto fail;
yading@11:     }
yading@11:     if (!tracks->duration)
yading@11:         tracks->duration = ctx->duration;
yading@11: 
yading@11:     for (i = 0; i < ctx->nb_streams; i++) {
yading@11:         struct Track **temp;
yading@11:         AVStream *st = ctx->streams[i];
yading@11:         track = av_mallocz(sizeof(*track));
yading@11:         if (!track) {
yading@11:             err = AVERROR(ENOMEM);
yading@11:             goto fail;
yading@11:         }
yading@11:         temp = av_realloc(tracks->tracks,
yading@11:                           sizeof(*tracks->tracks) * (tracks->nb_tracks + 1));
yading@11:         if (!temp) {
yading@11:             av_free(track);
yading@11:             err = AVERROR(ENOMEM);
yading@11:             goto fail;
yading@11:         }
yading@11:         tracks->tracks = temp;
yading@11:         tracks->tracks[tracks->nb_tracks] = track;
yading@11: 
yading@11:         track->name = file;
yading@11:         if ((ptr = strrchr(file, '/')) != NULL)
yading@11:             track->name = ptr + 1;
yading@11: 
yading@11:         track->bitrate   = st->codec->bit_rate;
yading@11:         track->track_id  = st->id;
yading@11:         track->timescale = st->time_base.den;
yading@11:         track->duration  = av_rescale_rnd(ctx->duration, track->timescale,
yading@11:                                           AV_TIME_BASE, AV_ROUND_UP);
yading@11:         track->is_audio  = st->codec->codec_type == AVMEDIA_TYPE_AUDIO;
yading@11:         track->is_video  = st->codec->codec_type == AVMEDIA_TYPE_VIDEO;
yading@11: 
yading@11:         if (!track->is_audio && !track->is_video) {
yading@11:             fprintf(stderr,
yading@11:                     "Track %d in %s is neither video nor audio, skipping\n",
yading@11:                     track->track_id, file);
yading@11:             av_freep(&tracks->tracks[tracks->nb_tracks]);
yading@11:             continue;
yading@11:         }
yading@11: 
yading@11:         if (track->is_audio) {
yading@11:             if (tracks->audio_track < 0)
yading@11:                 tracks->audio_track = tracks->nb_tracks;
yading@11:             tracks->nb_audio_tracks++;
yading@11:             track->channels    = st->codec->channels;
yading@11:             track->sample_rate = st->codec->sample_rate;
yading@11:             if (st->codec->codec_id == AV_CODEC_ID_AAC) {
yading@11:                 track->fourcc    = "AACL";
yading@11:                 track->tag       = 255;
yading@11:                 track->blocksize = 4;
yading@11:             } else if (st->codec->codec_id == AV_CODEC_ID_WMAPRO) {
yading@11:                 track->fourcc    = "WMAP";
yading@11:                 track->tag       = st->codec->codec_tag;
yading@11:                 track->blocksize = st->codec->block_align;
yading@11:             }
yading@11:             get_private_data(track, st->codec);
yading@11:         }
yading@11:         if (track->is_video) {
yading@11:             if (tracks->video_track < 0)
yading@11:                 tracks->video_track = tracks->nb_tracks;
yading@11:             tracks->nb_video_tracks++;
yading@11:             track->width  = st->codec->width;
yading@11:             track->height = st->codec->height;
yading@11:             if (st->codec->codec_id == AV_CODEC_ID_H264)
yading@11:                 track->fourcc = "H264";
yading@11:             else if (st->codec->codec_id == AV_CODEC_ID_VC1)
yading@11:                 track->fourcc = "WVC1";
yading@11:             get_video_private_data(track, st->codec);
yading@11:         }
yading@11: 
yading@11:         tracks->nb_tracks++;
yading@11:     }
yading@11: 
yading@11:     avformat_close_input(&ctx);
yading@11: 
yading@11:     err = read_mfra(tracks, orig_tracks, file, split);
yading@11: 
yading@11: fail:
yading@11:     if (ctx)
yading@11:         avformat_close_input(&ctx);
yading@11:     return err;
yading@11: }
yading@11: 
yading@11: static void output_server_manifest(struct Tracks *tracks,
yading@11:                                    const char *basename)
yading@11: {
yading@11:     char filename[1000];
yading@11:     FILE *out;
yading@11:     int i;
yading@11: 
yading@11:     snprintf(filename, sizeof(filename), "%s.ism", basename);
yading@11:     out = fopen(filename, "w");
yading@11:     if (!out) {
yading@11:         perror(filename);
yading@11:         return;
yading@11:     }
yading@11:     fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
yading@11:     fprintf(out, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
yading@11:     fprintf(out, "\t<head>\n");
yading@11:     fprintf(out, "\t\t<meta name=\"clientManifestRelativePath\" "
yading@11:                  "content=\"%s.ismc\" />\n", basename);
yading@11:     fprintf(out, "\t</head>\n");
yading@11:     fprintf(out, "\t<body>\n");
yading@11:     fprintf(out, "\t\t<switch>\n");
yading@11:     for (i = 0; i < tracks->nb_tracks; i++) {
yading@11:         struct Track *track = tracks->tracks[i];
yading@11:         const char *type    = track->is_video ? "video" : "audio";
yading@11:         fprintf(out, "\t\t\t<%s src=\"%s\" systemBitrate=\"%d\">\n",
yading@11:                 type, track->name, track->bitrate);
yading@11:         fprintf(out, "\t\t\t\t<param name=\"trackID\" value=\"%d\" "
yading@11:                      "valueType=\"data\" />\n", track->track_id);
yading@11:         fprintf(out, "\t\t\t</%s>\n", type);
yading@11:     }
yading@11:     fprintf(out, "\t\t</switch>\n");
yading@11:     fprintf(out, "\t</body>\n");
yading@11:     fprintf(out, "</smil>\n");
yading@11:     fclose(out);
yading@11: }
yading@11: 
yading@11: static void print_track_chunks(FILE *out, struct Tracks *tracks, int main,
yading@11:                                const char *type)
yading@11: {
yading@11:     int i, j;
yading@11:     struct Track *track = tracks->tracks[main];
yading@11:     for (i = 0; i < track->chunks; i++) {
yading@11:         for (j = main + 1; j < tracks->nb_tracks; j++) {
yading@11:             if (tracks->tracks[j]->is_audio == track->is_audio &&
yading@11:                 track->offsets[i].duration != tracks->tracks[j]->offsets[i].duration)
yading@11:                 fprintf(stderr, "Mismatched duration of %s chunk %d in %s and %s\n",
yading@11:                         type, i, track->name, tracks->tracks[j]->name);
yading@11:         }
yading@11:         fprintf(out, "\t\t<c n=\"%d\" d=\"%d\" />\n",
yading@11:                 i, track->offsets[i].duration);
yading@11:     }
yading@11: }
yading@11: 
yading@11: static void output_client_manifest(struct Tracks *tracks,
yading@11:                                    const char *basename, int split)
yading@11: {
yading@11:     char filename[1000];
yading@11:     FILE *out;
yading@11:     int i, j;
yading@11: 
yading@11:     if (split)
yading@11:         snprintf(filename, sizeof(filename), "Manifest");
yading@11:     else
yading@11:         snprintf(filename, sizeof(filename), "%s.ismc", basename);
yading@11:     out = fopen(filename, "w");
yading@11:     if (!out) {
yading@11:         perror(filename);
yading@11:         return;
yading@11:     }
yading@11:     fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
yading@11:     fprintf(out, "<SmoothStreamingMedia MajorVersion=\"2\" MinorVersion=\"0\" "
yading@11:                  "Duration=\"%"PRId64 "\">\n", tracks->duration * 10);
yading@11:     if (tracks->video_track >= 0) {
yading@11:         struct Track *track = tracks->tracks[tracks->video_track];
yading@11:         struct Track *first_track = track;
yading@11:         int index = 0;
yading@11:         fprintf(out,
yading@11:                 "\t<StreamIndex Type=\"video\" QualityLevels=\"%d\" "
yading@11:                 "Chunks=\"%d\" "
yading@11:                 "Url=\"QualityLevels({bitrate})/Fragments(video={start time})\">\n",
yading@11:                 tracks->nb_video_tracks, track->chunks);
yading@11:         for (i = 0; i < tracks->nb_tracks; i++) {
yading@11:             track = tracks->tracks[i];
yading@11:             if (!track->is_video)
yading@11:                 continue;
yading@11:             fprintf(out,
yading@11:                     "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
yading@11:                     "FourCC=\"%s\" MaxWidth=\"%d\" MaxHeight=\"%d\" "
yading@11:                     "CodecPrivateData=\"",
yading@11:                     index, track->bitrate, track->fourcc, track->width, track->height);
yading@11:             for (j = 0; j < track->codec_private_size; j++)
yading@11:                 fprintf(out, "%02X", track->codec_private[j]);
yading@11:             fprintf(out, "\" />\n");
yading@11:             index++;
yading@11:             if (track->chunks != first_track->chunks)
yading@11:                 fprintf(stderr, "Mismatched number of video chunks in %s and %s\n",
yading@11:                         track->name, first_track->name);
yading@11:         }
yading@11:         print_track_chunks(out, tracks, tracks->video_track, "video");
yading@11:         fprintf(out, "\t</StreamIndex>\n");
yading@11:     }
yading@11:     if (tracks->audio_track >= 0) {
yading@11:         struct Track *track = tracks->tracks[tracks->audio_track];
yading@11:         struct Track *first_track = track;
yading@11:         int index = 0;
yading@11:         fprintf(out,
yading@11:                 "\t<StreamIndex Type=\"audio\" QualityLevels=\"%d\" "
yading@11:                 "Chunks=\"%d\" "
yading@11:                 "Url=\"QualityLevels({bitrate})/Fragments(audio={start time})\">\n",
yading@11:                 tracks->nb_audio_tracks, track->chunks);
yading@11:         for (i = 0; i < tracks->nb_tracks; i++) {
yading@11:             track = tracks->tracks[i];
yading@11:             if (!track->is_audio)
yading@11:                 continue;
yading@11:             fprintf(out,
yading@11:                     "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" "
yading@11:                     "FourCC=\"%s\" SamplingRate=\"%d\" Channels=\"%d\" "
yading@11:                     "BitsPerSample=\"16\" PacketSize=\"%d\" "
yading@11:                     "AudioTag=\"%d\" CodecPrivateData=\"",
yading@11:                     index, track->bitrate, track->fourcc, track->sample_rate,
yading@11:                     track->channels, track->blocksize, track->tag);
yading@11:             for (j = 0; j < track->codec_private_size; j++)
yading@11:                 fprintf(out, "%02X", track->codec_private[j]);
yading@11:             fprintf(out, "\" />\n");
yading@11:             index++;
yading@11:             if (track->chunks != first_track->chunks)
yading@11:                 fprintf(stderr, "Mismatched number of audio chunks in %s and %s\n",
yading@11:                         track->name, first_track->name);
yading@11:         }
yading@11:         print_track_chunks(out, tracks, tracks->audio_track, "audio");
yading@11:         fprintf(out, "\t</StreamIndex>\n");
yading@11:     }
yading@11:     fprintf(out, "</SmoothStreamingMedia>\n");
yading@11:     fclose(out);
yading@11: }
yading@11: 
yading@11: static void clean_tracks(struct Tracks *tracks)
yading@11: {
yading@11:     int i;
yading@11:     for (i = 0; i < tracks->nb_tracks; i++) {
yading@11:         av_freep(&tracks->tracks[i]->codec_private);
yading@11:         av_freep(&tracks->tracks[i]->offsets);
yading@11:         av_freep(&tracks->tracks[i]);
yading@11:     }
yading@11:     av_freep(&tracks->tracks);
yading@11:     tracks->nb_tracks = 0;
yading@11: }
yading@11: 
yading@11: int main(int argc, char **argv)
yading@11: {
yading@11:     const char *basename = NULL;
yading@11:     int split = 0, i;
yading@11:     struct Tracks tracks = { 0, .video_track = -1, .audio_track = -1 };
yading@11: 
yading@11:     av_register_all();
yading@11: 
yading@11:     for (i = 1; i < argc; i++) {
yading@11:         if (!strcmp(argv[i], "-n")) {
yading@11:             basename = argv[i + 1];
yading@11:             i++;
yading@11:         } else if (!strcmp(argv[i], "-split")) {
yading@11:             split = 1;
yading@11:         } else if (argv[i][0] == '-') {
yading@11:             return usage(argv[0], 1);
yading@11:         } else {
yading@11:             if (handle_file(&tracks, argv[i], split))
yading@11:                 return 1;
yading@11:         }
yading@11:     }
yading@11:     if (!tracks.nb_tracks || (!basename && !split))
yading@11:         return usage(argv[0], 1);
yading@11: 
yading@11:     if (!split)
yading@11:         output_server_manifest(&tracks, basename);
yading@11:     output_client_manifest(&tracks, basename, split);
yading@11: 
yading@11:     clean_tracks(&tracks);
yading@11: 
yading@11:     return 0;
yading@11: }