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![Michael Niedermayer](/assets/img/avatar_default.png)
* commit 'f920d089535bf7cf10aeda900cc43201c5e18cd0': ismindex: Add an option for outputting files elsewhere than in the current directory Conflicts: tools/ismindex.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
597 lines
20 KiB
C
597 lines
20 KiB
C
/*
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* Copyright (c) 2012 Martin Storsjo
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* To create a simple file for smooth streaming:
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* ffmpeg <normal input/transcoding options> -movflags frag_keyframe foo.ismv
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* ismindex -n foo foo.ismv
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* This step creates foo.ism and foo.ismc that is required by IIS for
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* serving it.
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*
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* By adding -path-prefix path/, the produced foo.ism will refer to the
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* files foo.ismv as "path/foo.ismv" - the prefix for the generated ismc
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* file can be set with the -ismc-prefix option similarly.
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*
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* To pre-split files for serving as static files by a web server without
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* any extra server support, create the ismv file as above, and split it:
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* ismindex -split foo.ismv
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* This step creates a file Manifest and directories QualityLevel(...),
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* that can be read directly by a smooth streaming player.
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*
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* The -output dir option can be used to request that output files
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* (both .ism/.ismc, or Manifest/QualityLevels* when splitting)
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* should be written to this directory instead of in the current directory.
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* (The directory itself isn't created if it doesn't already exist.)
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*/
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#include <stdio.h>
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#include <string.h>
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#include "cmdutils.h"
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#include "libavformat/avformat.h"
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#include "libavformat/os_support.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/mathematics.h"
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static int usage(const char *argv0, int ret)
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{
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fprintf(stderr, "%s [-split] [-n basename] [-path-prefix prefix] "
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"[-ismc-prefix prefix] [-output dir] file1 [file2] ...\n", argv0);
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return ret;
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}
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struct MoofOffset {
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int64_t time;
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int64_t offset;
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int64_t duration;
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};
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struct Track {
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const char *name;
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int64_t duration;
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int bitrate;
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int track_id;
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int is_audio, is_video;
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int width, height;
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int chunks;
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int sample_rate, channels;
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uint8_t *codec_private;
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int codec_private_size;
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struct MoofOffset *offsets;
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int timescale;
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const char *fourcc;
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int blocksize;
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int tag;
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};
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struct Tracks {
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int nb_tracks;
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int64_t duration;
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struct Track **tracks;
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int video_track, audio_track;
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int nb_video_tracks, nb_audio_tracks;
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};
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static int copy_tag(AVIOContext *in, AVIOContext *out, int32_t tag_name)
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{
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int32_t size, tag;
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size = avio_rb32(in);
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tag = avio_rb32(in);
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avio_wb32(out, size);
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avio_wb32(out, tag);
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if (tag != tag_name)
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return -1;
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size -= 8;
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while (size > 0) {
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char buf[1024];
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int len = FFMIN(sizeof(buf), size);
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if (avio_read(in, buf, len) != len)
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break;
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avio_write(out, buf, len);
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size -= len;
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}
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return 0;
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}
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static int write_fragment(const char *filename, AVIOContext *in)
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{
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AVIOContext *out = NULL;
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int ret;
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if ((ret = avio_open2(&out, filename, AVIO_FLAG_WRITE, NULL, NULL)) < 0)
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return ret;
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copy_tag(in, out, MKBETAG('m', 'o', 'o', 'f'));
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copy_tag(in, out, MKBETAG('m', 'd', 'a', 't'));
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avio_flush(out);
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avio_close(out);
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return ret;
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}
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static int write_fragments(struct Tracks *tracks, int start_index,
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AVIOContext *in, const char *output_prefix)
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{
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char dirname[2048], filename[2048];
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int i, j;
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for (i = start_index; i < tracks->nb_tracks; i++) {
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struct Track *track = tracks->tracks[i];
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const char *type = track->is_video ? "video" : "audio";
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snprintf(dirname, sizeof(dirname), "%sQualityLevels(%d)", output_prefix, track->bitrate);
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if (mkdir(dirname, 0777) == -1)
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return AVERROR(errno);
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for (j = 0; j < track->chunks; j++) {
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snprintf(filename, sizeof(filename), "%s/Fragments(%s=%"PRId64")",
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dirname, type, track->offsets[j].time);
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avio_seek(in, track->offsets[j].offset, SEEK_SET);
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write_fragment(filename, in);
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}
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}
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return 0;
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}
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static int read_tfra(struct Tracks *tracks, int start_index, AVIOContext *f)
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{
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int ret = AVERROR_EOF, track_id;
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int version, fieldlength, i, j;
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int64_t pos = avio_tell(f);
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uint32_t size = avio_rb32(f);
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struct Track *track = NULL;
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if (avio_rb32(f) != MKBETAG('t', 'f', 'r', 'a'))
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goto fail;
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version = avio_r8(f);
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avio_rb24(f);
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track_id = avio_rb32(f); /* track id */
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for (i = start_index; i < tracks->nb_tracks && !track; i++)
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if (tracks->tracks[i]->track_id == track_id)
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track = tracks->tracks[i];
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if (!track) {
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/* Ok, continue parsing the next atom */
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ret = 0;
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goto fail;
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}
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fieldlength = avio_rb32(f);
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track->chunks = avio_rb32(f);
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track->offsets = av_mallocz_array(track->chunks, sizeof(*track->offsets));
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if (!track->offsets) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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for (i = 0; i < track->chunks; i++) {
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if (version == 1) {
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track->offsets[i].time = avio_rb64(f);
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track->offsets[i].offset = avio_rb64(f);
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} else {
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track->offsets[i].time = avio_rb32(f);
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track->offsets[i].offset = avio_rb32(f);
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}
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for (j = 0; j < ((fieldlength >> 4) & 3) + 1; j++)
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avio_r8(f);
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for (j = 0; j < ((fieldlength >> 2) & 3) + 1; j++)
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avio_r8(f);
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for (j = 0; j < ((fieldlength >> 0) & 3) + 1; j++)
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avio_r8(f);
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if (i > 0)
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track->offsets[i - 1].duration = track->offsets[i].time -
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track->offsets[i - 1].time;
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}
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if (track->chunks > 0)
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track->offsets[track->chunks - 1].duration = track->duration -
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track->offsets[track->chunks - 1].time;
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ret = 0;
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fail:
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avio_seek(f, pos + size, SEEK_SET);
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return ret;
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}
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static int read_mfra(struct Tracks *tracks, int start_index,
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const char *file, int split, const char *output_prefix)
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{
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int err = 0;
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AVIOContext *f = NULL;
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int32_t mfra_size;
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if ((err = avio_open2(&f, file, AVIO_FLAG_READ, NULL, NULL)) < 0)
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goto fail;
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avio_seek(f, avio_size(f) - 4, SEEK_SET);
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mfra_size = avio_rb32(f);
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avio_seek(f, -mfra_size, SEEK_CUR);
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if (avio_rb32(f) != mfra_size) {
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err = AVERROR_INVALIDDATA;
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goto fail;
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}
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if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) {
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err = AVERROR_INVALIDDATA;
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goto fail;
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}
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while (!read_tfra(tracks, start_index, f)) {
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/* Empty */
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}
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if (split)
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err = write_fragments(tracks, start_index, f, output_prefix);
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fail:
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if (f)
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avio_close(f);
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if (err)
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fprintf(stderr, "Unable to read the MFRA atom in %s\n", file);
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return err;
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}
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static int get_private_data(struct Track *track, AVCodecContext *codec)
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{
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track->codec_private_size = codec->extradata_size;
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track->codec_private = av_mallocz(codec->extradata_size);
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if (!track->codec_private)
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return AVERROR(ENOMEM);
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memcpy(track->codec_private, codec->extradata, codec->extradata_size);
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return 0;
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}
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static int get_video_private_data(struct Track *track, AVCodecContext *codec)
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{
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AVIOContext *io = NULL;
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uint16_t sps_size, pps_size;
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int err = AVERROR(EINVAL);
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if (codec->codec_id == AV_CODEC_ID_VC1)
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return get_private_data(track, codec);
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if (avio_open_dyn_buf(&io) < 0) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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if (codec->extradata_size < 11 || codec->extradata[0] != 1)
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goto fail;
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sps_size = AV_RB16(&codec->extradata[6]);
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if (11 + sps_size > codec->extradata_size)
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goto fail;
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avio_wb32(io, 0x00000001);
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avio_write(io, &codec->extradata[8], sps_size);
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pps_size = AV_RB16(&codec->extradata[9 + sps_size]);
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if (11 + sps_size + pps_size > codec->extradata_size)
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goto fail;
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avio_wb32(io, 0x00000001);
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avio_write(io, &codec->extradata[11 + sps_size], pps_size);
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err = 0;
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fail:
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track->codec_private_size = avio_close_dyn_buf(io, &track->codec_private);
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return err;
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}
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static int handle_file(struct Tracks *tracks, const char *file, int split,
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const char *output_prefix)
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{
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AVFormatContext *ctx = NULL;
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int err = 0, i, orig_tracks = tracks->nb_tracks;
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char errbuf[50], *ptr;
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struct Track *track;
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err = avformat_open_input(&ctx, file, NULL, NULL);
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if (err < 0) {
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av_strerror(err, errbuf, sizeof(errbuf));
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fprintf(stderr, "Unable to open %s: %s\n", file, errbuf);
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return 1;
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}
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err = avformat_find_stream_info(ctx, NULL);
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if (err < 0) {
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av_strerror(err, errbuf, sizeof(errbuf));
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fprintf(stderr, "Unable to identify %s: %s\n", file, errbuf);
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goto fail;
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}
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if (ctx->nb_streams < 1) {
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fprintf(stderr, "No streams found in %s\n", file);
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goto fail;
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}
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for (i = 0; i < ctx->nb_streams; i++) {
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struct Track **temp;
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AVStream *st = ctx->streams[i];
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track = av_mallocz(sizeof(*track));
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if (!track) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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temp = av_realloc(tracks->tracks,
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sizeof(*tracks->tracks) * (tracks->nb_tracks + 1));
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if (!temp) {
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av_free(track);
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err = AVERROR(ENOMEM);
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goto fail;
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}
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tracks->tracks = temp;
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tracks->tracks[tracks->nb_tracks] = track;
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track->name = file;
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if ((ptr = strrchr(file, '/')) != NULL)
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track->name = ptr + 1;
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track->bitrate = st->codec->bit_rate;
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track->track_id = st->id;
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track->timescale = st->time_base.den;
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track->duration = st->duration;
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track->is_audio = st->codec->codec_type == AVMEDIA_TYPE_AUDIO;
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track->is_video = st->codec->codec_type == AVMEDIA_TYPE_VIDEO;
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if (!track->is_audio && !track->is_video) {
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fprintf(stderr,
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"Track %d in %s is neither video nor audio, skipping\n",
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track->track_id, file);
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av_freep(&tracks->tracks[tracks->nb_tracks]);
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continue;
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}
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tracks->duration = FFMAX(tracks->duration,
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av_rescale_rnd(track->duration, AV_TIME_BASE,
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track->timescale, AV_ROUND_UP));
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if (track->is_audio) {
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if (tracks->audio_track < 0)
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tracks->audio_track = tracks->nb_tracks;
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tracks->nb_audio_tracks++;
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track->channels = st->codec->channels;
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track->sample_rate = st->codec->sample_rate;
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if (st->codec->codec_id == AV_CODEC_ID_AAC) {
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track->fourcc = "AACL";
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track->tag = 255;
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track->blocksize = 4;
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} else if (st->codec->codec_id == AV_CODEC_ID_WMAPRO) {
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track->fourcc = "WMAP";
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track->tag = st->codec->codec_tag;
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track->blocksize = st->codec->block_align;
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}
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get_private_data(track, st->codec);
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}
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if (track->is_video) {
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if (tracks->video_track < 0)
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tracks->video_track = tracks->nb_tracks;
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tracks->nb_video_tracks++;
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track->width = st->codec->width;
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track->height = st->codec->height;
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if (st->codec->codec_id == AV_CODEC_ID_H264)
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track->fourcc = "H264";
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else if (st->codec->codec_id == AV_CODEC_ID_VC1)
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track->fourcc = "WVC1";
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get_video_private_data(track, st->codec);
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}
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tracks->nb_tracks++;
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}
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avformat_close_input(&ctx);
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err = read_mfra(tracks, orig_tracks, file, split, output_prefix);
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fail:
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if (ctx)
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avformat_close_input(&ctx);
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return err;
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}
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static void output_server_manifest(struct Tracks *tracks, const char *basename,
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const char *output_prefix,
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const char *path_prefix,
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const char *ismc_prefix)
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{
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char filename[1000];
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FILE *out;
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int i;
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snprintf(filename, sizeof(filename), "%s%s.ism", output_prefix, basename);
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out = fopen(filename, "w");
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if (!out) {
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perror(filename);
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return;
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}
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fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
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fprintf(out, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
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fprintf(out, "\t<head>\n");
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fprintf(out, "\t\t<meta name=\"clientManifestRelativePath\" "
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"content=\"%s%s.ismc\" />\n", ismc_prefix, basename);
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fprintf(out, "\t</head>\n");
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fprintf(out, "\t<body>\n");
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fprintf(out, "\t\t<switch>\n");
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for (i = 0; i < tracks->nb_tracks; i++) {
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struct Track *track = tracks->tracks[i];
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const char *type = track->is_video ? "video" : "audio";
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fprintf(out, "\t\t\t<%s src=\"%s%s\" systemBitrate=\"%d\">\n",
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type, path_prefix, track->name, track->bitrate);
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fprintf(out, "\t\t\t\t<param name=\"trackID\" value=\"%d\" "
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"valueType=\"data\" />\n", track->track_id);
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fprintf(out, "\t\t\t</%s>\n", type);
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}
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fprintf(out, "\t\t</switch>\n");
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fprintf(out, "\t</body>\n");
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fprintf(out, "</smil>\n");
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fclose(out);
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}
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static void print_track_chunks(FILE *out, struct Tracks *tracks, int main,
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const char *type)
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{
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int i, j;
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struct Track *track = tracks->tracks[main];
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for (i = 0; i < track->chunks; i++) {
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for (j = main + 1; j < tracks->nb_tracks; j++) {
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if (tracks->tracks[j]->is_audio == track->is_audio &&
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track->offsets[i].duration != tracks->tracks[j]->offsets[i].duration)
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fprintf(stderr, "Mismatched duration of %s chunk %d in %s and %s\n",
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type, i, track->name, tracks->tracks[j]->name);
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}
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fprintf(out, "\t\t<c n=\"%d\" d=\"%"PRId64"\" />\n",
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i, track->offsets[i].duration);
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}
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}
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static void output_client_manifest(struct Tracks *tracks, const char *basename,
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const char *output_prefix, int split)
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{
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char filename[1000];
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FILE *out;
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int i, j;
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if (split)
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snprintf(filename, sizeof(filename), "%sManifest", output_prefix);
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else
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snprintf(filename, sizeof(filename), "%s%s.ismc", output_prefix, basename);
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out = fopen(filename, "w");
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if (!out) {
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perror(filename);
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return;
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}
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fprintf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
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fprintf(out, "<SmoothStreamingMedia MajorVersion=\"2\" MinorVersion=\"0\" "
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"Duration=\"%"PRId64 "\">\n", tracks->duration * 10);
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if (tracks->video_track >= 0) {
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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 and %s\n",
|
|
track->name, first_track->name);
|
|
}
|
|
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, 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 (argv[i][0] == '-') {
|
|
return usage(argv[0], 1);
|
|
} else {
|
|
if (handle_file(&tracks, argv[i], split, 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;
|
|
}
|