| /* |
| * 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. |
| * |
| * 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. |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <sys/stat.h> |
| #ifdef _WIN32 |
| #include <io.h> |
| #define mkdir(a, b) mkdir(a) |
| #endif |
| |
| #include "libavformat/avformat.h" |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/mathematics.h" |
| |
| static int usage(const char *argv0, int ret) |
| { |
| fprintf(stderr, "%s [-split] [-n basename] file1 [file2] ...\n", argv0); |
| return ret; |
| } |
| |
| struct MoofOffset { |
| int64_t time; |
| int64_t offset; |
| int duration; |
| }; |
| |
| struct VideoFile { |
| 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 VideoFiles { |
| int nb_files; |
| int64_t duration; |
| struct VideoFile **files; |
| int video_file, audio_file; |
| int nb_video_files, nb_audio_files; |
| }; |
| |
| 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 (tag != tag_name) |
| return -1; |
| size -= 8; |
| while (size > 0) { |
| char buf[1024]; |
| int len = FFMIN(sizeof(buf), size); |
| if (avio_read(in, buf, len) != len) |
| break; |
| avio_write(out, buf, len); |
| size -= len; |
| } |
| 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) |
| return ret; |
| copy_tag(in, out, MKBETAG('m', 'o', 'o', 'f')); |
| copy_tag(in, out, MKBETAG('m', 'd', 'a', 't')); |
| |
| avio_flush(out); |
| avio_close(out); |
| |
| return ret; |
| } |
| |
| static int write_fragments(struct VideoFiles *files, int start_index, |
| AVIOContext *in) |
| { |
| char dirname[100], filename[500]; |
| int i, j; |
| |
| for (i = start_index; i < files->nb_files; i++) { |
| struct VideoFile *vf = files->files[i]; |
| const char *type = vf->is_video ? "video" : "audio"; |
| snprintf(dirname, sizeof(dirname), "QualityLevels(%d)", vf->bitrate); |
| mkdir(dirname, 0777); |
| for (j = 0; j < vf->chunks; j++) { |
| snprintf(filename, sizeof(filename), "%s/Fragments(%s=%"PRId64")", |
| dirname, type, vf->offsets[j].time); |
| avio_seek(in, vf->offsets[j].offset, SEEK_SET); |
| write_fragment(filename, in); |
| } |
| } |
| return 0; |
| } |
| |
| static int read_tfra(struct VideoFiles *files, 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 VideoFile *vf = 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 < files->nb_files && !vf; i++) |
| if (files->files[i]->track_id == track_id) |
| vf = files->files[i]; |
| if (!vf) { |
| /* Ok, continue parsing the next atom */ |
| ret = 0; |
| goto fail; |
| } |
| fieldlength = avio_rb32(f); |
| vf->chunks = avio_rb32(f); |
| vf->offsets = av_mallocz(sizeof(*vf->offsets) * vf->chunks); |
| if (!vf->offsets) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| for (i = 0; i < vf->chunks; i++) { |
| if (version == 1) { |
| vf->offsets[i].time = avio_rb64(f); |
| vf->offsets[i].offset = avio_rb64(f); |
| } else { |
| vf->offsets[i].time = avio_rb32(f); |
| vf->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) |
| vf->offsets[i - 1].duration = vf->offsets[i].time - |
| vf->offsets[i - 1].time; |
| } |
| if (vf->chunks > 0) |
| vf->offsets[vf->chunks - 1].duration = vf->duration - |
| vf->offsets[vf->chunks - 1].time; |
| ret = 0; |
| |
| fail: |
| avio_seek(f, pos + size, SEEK_SET); |
| return ret; |
| } |
| |
| static int read_mfra(struct VideoFiles *files, int start_index, |
| const char *file, int split) |
| { |
| int err = 0; |
| 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) |
| goto fail; |
| if (avio_rb32(f) != MKBETAG('m', 'f', 'r', 'a')) |
| goto fail; |
| while (!read_tfra(files, start_index, f)) { |
| /* Empty */ |
| } |
| |
| if (split) |
| write_fragments(files, start_index, f); |
| |
| fail: |
| if (f) |
| avio_close(f); |
| return err; |
| } |
| |
| static int get_private_data(struct VideoFile *vf, AVCodecContext *codec) |
| { |
| vf->codec_private_size = codec->extradata_size; |
| vf->codec_private = av_mallocz(codec->extradata_size); |
| if (!vf->codec_private) |
| return AVERROR(ENOMEM); |
| memcpy(vf->codec_private, codec->extradata, codec->extradata_size); |
| return 0; |
| } |
| |
| static int get_video_private_data(struct VideoFile *vf, AVCodecContext *codec) |
| { |
| AVIOContext *io = NULL; |
| uint16_t sps_size, pps_size; |
| int err = AVERROR(EINVAL); |
| |
| if (codec->codec_id == CODEC_ID_VC1) |
| return get_private_data(vf, codec); |
| |
| avio_open_dyn_buf(&io); |
| 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: |
| vf->codec_private_size = avio_close_dyn_buf(io, &vf->codec_private); |
| return err; |
| } |
| |
| static int handle_file(struct VideoFiles *files, const char *file, int split) |
| { |
| AVFormatContext *ctx = NULL; |
| int err = 0, i, orig_files = files->nb_files; |
| char errbuf[50], *ptr; |
| struct VideoFile *vf; |
| |
| 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 (!files->duration) |
| files->duration = ctx->duration; |
| |
| for (i = 0; i < ctx->nb_streams; i++) { |
| AVStream *st = ctx->streams[i]; |
| vf = av_mallocz(sizeof(*vf)); |
| files->files = av_realloc(files->files, |
| sizeof(*files->files) * (files->nb_files + 1)); |
| files->files[files->nb_files] = vf; |
| |
| vf->name = file; |
| if ((ptr = strrchr(file, '/')) != NULL) |
| vf->name = ptr + 1; |
| |
| vf->bitrate = st->codec->bit_rate; |
| vf->track_id = st->id; |
| vf->timescale = st->time_base.den; |
| vf->duration = av_rescale_rnd(ctx->duration, vf->timescale, |
| AV_TIME_BASE, AV_ROUND_UP); |
| vf->is_audio = st->codec->codec_type == AVMEDIA_TYPE_AUDIO; |
| vf->is_video = st->codec->codec_type == AVMEDIA_TYPE_VIDEO; |
| |
| if (!vf->is_audio && !vf->is_video) { |
| fprintf(stderr, |
| "Track %d in %s is neither video nor audio, skipping\n", |
| vf->track_id, file); |
| av_freep(&files->files[files->nb_files]); |
| continue; |
| } |
| |
| if (vf->is_audio) { |
| if (files->audio_file < 0) |
| files->audio_file = files->nb_files; |
| files->nb_audio_files++; |
| vf->channels = st->codec->channels; |
| vf->sample_rate = st->codec->sample_rate; |
| if (st->codec->codec_id == CODEC_ID_AAC) { |
| vf->fourcc = "AACL"; |
| vf->tag = 255; |
| vf->blocksize = 4; |
| } else if (st->codec->codec_id == CODEC_ID_WMAPRO) { |
| vf->fourcc = "WMAP"; |
| vf->tag = st->codec->codec_tag; |
| vf->blocksize = st->codec->block_align; |
| } |
| get_private_data(vf, st->codec); |
| } |
| if (vf->is_video) { |
| if (files->video_file < 0) |
| files->video_file = files->nb_files; |
| files->nb_video_files++; |
| vf->width = st->codec->width; |
| vf->height = st->codec->height; |
| if (st->codec->codec_id == CODEC_ID_H264) |
| vf->fourcc = "H264"; |
| else if (st->codec->codec_id == CODEC_ID_VC1) |
| vf->fourcc = "WVC1"; |
| get_video_private_data(vf, st->codec); |
| } |
| |
| files->nb_files++; |
| } |
| |
| avformat_close_input(&ctx); |
| |
| read_mfra(files, orig_files, file, split); |
| |
| fail: |
| if (ctx) |
| avformat_close_input(&ctx); |
| return err; |
| } |
| |
| static void output_server_manifest(struct VideoFiles *files, |
| const char *basename) |
| { |
| char filename[1000]; |
| FILE *out; |
| int i; |
| |
| snprintf(filename, sizeof(filename), "%s.ism", 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.ismc\" />\n", basename); |
| fprintf(out, "\t</head>\n"); |
| fprintf(out, "\t<body>\n"); |
| fprintf(out, "\t\t<switch>\n"); |
| for (i = 0; i < files->nb_files; i++) { |
| struct VideoFile *vf = files->files[i]; |
| const char *type = vf->is_video ? "video" : "audio"; |
| fprintf(out, "\t\t\t<%s src=\"%s\" systemBitrate=\"%d\">\n", |
| type, vf->name, vf->bitrate); |
| fprintf(out, "\t\t\t\t<param name=\"trackID\" value=\"%d\" " |
| "valueType=\"data\" />\n", vf->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 output_client_manifest(struct VideoFiles *files, |
| const char *basename, int split) |
| { |
| char filename[1000]; |
| FILE *out; |
| int i, j; |
| |
| if (split) |
| snprintf(filename, sizeof(filename), "Manifest"); |
| else |
| snprintf(filename, sizeof(filename), "%s.ismc", 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", files->duration * 10); |
| if (files->video_file >= 0) { |
| struct VideoFile *vf = files->files[files->video_file]; |
| int index = 0; |
| fprintf(out, |
| "\t<StreamIndex Type=\"video\" QualityLevels=\"%d\" " |
| "Chunks=\"%d\" " |
| "Url=\"QualityLevels({bitrate})/Fragments(video={start time})\">\n", |
| files->nb_video_files, vf->chunks); |
| for (i = 0; i < files->nb_files; i++) { |
| vf = files->files[i]; |
| if (!vf->is_video) |
| continue; |
| fprintf(out, |
| "\t\t<QualityLevel Index=\"%d\" Bitrate=\"%d\" " |
| "FourCC=\"%s\" MaxWidth=\"%d\" MaxHeight=\"%d\" " |
| "CodecPrivateData=\"", |
| index, vf->bitrate, vf->fourcc, vf->width, vf->height); |
| for (j = 0; j < vf->codec_private_size; j++) |
| fprintf(out, "%02X", vf->codec_private[j]); |
| fprintf(out, "\" />\n"); |
| index++; |
| } |
| vf = files->files[files->video_file]; |
| for (i = 0; i < vf->chunks; i++) |
| fprintf(out, "\t\t<c n=\"%d\" d=\"%d\" />\n", i, |
| vf->offsets[i].duration); |
| fprintf(out, "\t</StreamIndex>\n"); |
| } |
| if (files->audio_file >= 0) { |
| struct VideoFile *vf = files->files[files->audio_file]; |
| int index = 0; |
| fprintf(out, |
| "\t<StreamIndex Type=\"audio\" QualityLevels=\"%d\" " |
| "Chunks=\"%d\" " |
| "Url=\"QualityLevels({bitrate})/Fragments(audio={start time})\">\n", |
| files->nb_audio_files, vf->chunks); |
| for (i = 0; i < files->nb_files; i++) { |
| vf = files->files[i]; |
| if (!vf->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, vf->bitrate, vf->fourcc, vf->sample_rate, |
| vf->channels, vf->blocksize, vf->tag); |
| for (j = 0; j < vf->codec_private_size; j++) |
| fprintf(out, "%02X", vf->codec_private[j]); |
| fprintf(out, "\" />\n"); |
| index++; |
| } |
| vf = files->files[files->audio_file]; |
| for (i = 0; i < vf->chunks; i++) |
| fprintf(out, "\t\t<c n=\"%d\" d=\"%d\" />\n", |
| i, vf->offsets[i].duration); |
| fprintf(out, "\t</StreamIndex>\n"); |
| } |
| fprintf(out, "</SmoothStreamingMedia>\n"); |
| fclose(out); |
| } |
| |
| static void clean_files(struct VideoFiles *files) |
| { |
| int i; |
| for (i = 0; i < files->nb_files; i++) { |
| av_freep(&files->files[i]->codec_private); |
| av_freep(&files->files[i]->offsets); |
| av_freep(&files->files[i]); |
| } |
| av_freep(&files->files); |
| files->nb_files = 0; |
| } |
| |
| int main(int argc, char **argv) |
| { |
| const char *basename = NULL; |
| int split = 0, i; |
| struct VideoFiles vf = { 0, .video_file = -1, .audio_file = -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], "-split")) { |
| split = 1; |
| } else if (argv[i][0] == '-') { |
| return usage(argv[0], 1); |
| } else { |
| handle_file(&vf, argv[i], split); |
| } |
| } |
| if (!vf.nb_files || (!basename && !split)) |
| return usage(argv[0], 1); |
| |
| if (!split) |
| output_server_manifest(&vf, basename); |
| output_client_manifest(&vf, basename, split); |
| |
| clean_files(&vf); |
| |
| return 0; |
| } |
