From patchwork Wed Aug 31 11:36:00 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: erkki.seppala.ext@nokia.com X-Patchwork-Id: 359 Delivered-To: ffmpegpatchwork@gmail.com Received: by 10.103.140.134 with SMTP id o128csp327893vsd; Wed, 31 Aug 2016 04:37:04 -0700 (PDT) X-Received: by 10.194.107.69 with SMTP id ha5mr8400798wjb.100.1472643421769; Wed, 31 Aug 2016 04:37:01 -0700 (PDT) Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id u18si7295770wjr.236.2016.08.31.04.37.00; Wed, 31 Aug 2016 04:37:01 -0700 (PDT) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@nokia.onmicrosoft.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE dis=NONE) header.from=nokia.com Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 39629689AD0; Wed, 31 Aug 2016 14:36:11 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from EUR01-DB5-obe.outbound.protection.outlook.com (mail-db5eur01on0136.outbound.protection.outlook.com [104.47.2.136]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id B68C5689A72 for ; Wed, 31 Aug 2016 14:36:06 +0300 (EEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nokia.onmicrosoft.com; s=selector1-nokia-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=eLS6rpUPoAwBWnibt65JRjx+yMGMN07JjboR20nkjRE=; b=tNKWIxQRqWOm6Dc3KiDChIN+j/1MGqO92+Vc/ORJeW+kF0YLNKNJFIOGvkIUuS/ZbyN+yfNJvjWlky2OhdX4JaWFxiFTaxMzY8jvYKvuiQf+moz6shD/Ez5jZxZFOJcYUVZe2z3EksYc5tO6ol8yEXWx68wlxvkuJJhmHrsB+mo= Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=erkki.seppala.ext@nokia.com; Received: from erkkise-laptop.vincit.intranet (131.228.2.27) by AM5PR0701MB2529.eurprd07.prod.outlook.com (10.169.153.149) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA_P384) id 15.1.599.9; Wed, 31 Aug 2016 11:36:11 +0000 Received: by erkkise-laptop.vincit.intranet (Postfix, from userid 1000) id 08BD94CB960; Wed, 31 Aug 2016 14:36:02 +0300 (EEST) From: =?UTF-8?q?Erkki=20Sepp=C3=A4l=C3=A4?= To: Date: Wed, 31 Aug 2016 14:36:00 +0300 Message-ID: <1472643361-10118-18-git-send-email-erkki.seppala.ext@nokia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1472643361-10118-1-git-send-email-erkki.seppala.ext@nokia.com> References: <1471943019-14136-1-git-send-email-erkki.seppala.ext@nokia.com> MIME-Version: 1.0 X-Originating-IP: [131.228.2.27] X-ClientProxiedBy: DB5PR10CA0021.EURPRD10.PROD.OUTLOOK.COM (10.165.4.159) To AM5PR0701MB2529.eurprd07.prod.outlook.com (10.169.153.149) X-MS-Office365-Filtering-Correlation-Id: 30c65308-b9d3-4a44-4125-08d3d19301e7 X-Microsoft-Exchange-Diagnostics: 1; AM5PR0701MB2529; 2:rk8jlhvkp/wCCPx3G2iJvy4uAdq5prQ0sAsMH8UqHi9Uil6fntzmou2KDDbBuRgGtN0bsWQkP51SII+nYmKBjDwy+200ZB+28FQZYc2iMV/8dNA2YCvrlMs+0OZUflLIyOxE9BFlYHgcifDrrX/HV/XthQ6kbWqeDHYXxAGxO3Hg4uyU/pBe8OzarfQU0jAv; 3:7yvMTKntWfmb4uSCTp6zcJdFOJ8NKVlI89Yi+7M71wu6C8dpXBVPSDbD8YlJNQZu1v/vXfjXMAkvjYU6QrsV8c7X9bKRovCPk6YNB751M66+Cc+g1dDy7EUhj8UoHOG5; 25:i9HcFrBDHS/jtPp0RsprwUqdWbnBXokeorhjWUZXwLqRelV6ezIbf5xMy2f5UE2Kgd0HY8EZc4wVM3KYthElsuL/ldAR1noLtXr2hUTwtyqZAZLAl9bGvISk6SYgve0GR3ZwiiCSo2y019K0Hh5gmhiJYjeYQvY/Nc0Kx/DpJOoB/wrN93aXDBZobOv1B1p408pD2xR+aOq7VT5nahcjnQlRIioZZlvr7iukHZuBiz1k/aExUgMCmRE5UcWIhU1WQclxq6s+6hdiktzudm0nXbbka5FDHo3bKTvdPQ/zEyqHS42zoxEvaBeXVxCuhTLVG80+pDmF1ZlGh01OnVUxZsjSE9nRPZinjDxFXw/sz4fnWba70UBp9m4Fc/0I0Im73H4pCq4pvBr9r/8C8BMD44PJ5jV7TfAUo8mT+6yAXKQ= X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:AM5PR0701MB2529; X-Microsoft-Exchange-Diagnostics: 1; AM5PR0701MB2529; 31:7cE4jtgL47Tg94anHa+g63s8lKlCh207Edmk0LnBlSLaAHFpBkz6H/W9cr8CrJIbxMNdsQMqKiX0L6eIpiKvZ4ra7zqHgyCYrQowFS/I2+j6uoYpyUGzdTZPjbB3Bjpz/hQmkDHb1eU1ESTsC8D7qfL+t3k3gSpt1wiVz+QUpOuYXDYNxO3XEJi5dsRvYgsyC56Sjxavcvjs3wK5dFlPMFGGoeHhjtIgMBqOUmUsecg=; 20: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 X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:(82608151540597); X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:(6040176)(601004)(2401047)(8121501046)(5005006)(10201501046)(3002001)(6055026); SRVR:AM5PR0701MB2529; BCL:0; PCL:0; RULEID:; SRVR:AM5PR0701MB2529; X-Microsoft-Exchange-Diagnostics: 1; AM5PR0701MB2529; 4:25qlCp15xYFRJjc9zjiuAU87EuX7p37yLKGvAniza6NoVrH71qVsQV5recD0ZSic7uXA/sTyl5Fs5MBrcZpwhs3jom1MeXYSYlTp7xlhdf2arXS//MQprCm5yvKP80+ALs+Wl1fk9ogsyL0ymkvWzpVz/e8t4mO0hBW68Mpmr8bmh3a9LCNnyOVqPrfOXSBX2q3W79cLhOY7SVBIcuP5ZOxnX+8MX90sKUMnQi0LJpBFr03kgK+Yr9l3fk/OM3g5YIE3TUi4hLIBC4xPDUYYCU/7Wz7plgsUH6ZBV6/C6ylfbd+rbFzbvwHc2YBiYF5Rj0jVUPDvNWSyXJPpSynYU66v1206QfnoLrVO24t839f9HRUbFizFPKxVGdTnaNaB78bLq9LST3mwwoCkRp7t22eW3bt76agITBcZj/SsFQmWviHMXFGY3/b+qaDFfMiY X-Forefront-PRVS: 00514A2FE6 X-Forefront-Antispam-Report: SFV:NSPM; SFS:(10019020)(4630300001)(6009001)(7916002)(189002)(199003)(68736007)(8676002)(4326007)(2906002)(305945005)(50226002)(86362001)(229853001)(450100001)(50466002)(2870700001)(7736002)(7846002)(36756003)(81156014)(47776003)(2950100001)(46386002)(92566002)(5660300001)(45336002)(2351001)(33646002)(586003)(19580395003)(110136002)(4001430100002)(52956003)(90966002)(42186005)(107886002)(19580405001)(189998001)(76176999)(23676002)(97736004)(6116002)(101416001)(81166006)(3846002)(5820100001)(122856001)(50986999)(105586002)(106356001)(66066001); DIR:OUT; SFP:1102; SCL:1; SRVR:AM5PR0701MB2529; H:erkkise-laptop.vincit.intranet; FPR:; SPF:None; PTR:InfoNoRecords; MX:1; A:1; LANG:en; Received-SPF: None (protection.outlook.com: nokia.com does not designate permitted sender hosts) X-Microsoft-Exchange-Diagnostics: =?utf-8?B?MTtBTTVQUjA3MDFNQjI1Mjk7MjM6TVFEUVROcjFTbC8xeS9ZU0U4V0NiZlNG?= =?utf-8?B?Z0RCYXhOaUtoNWpwYmdLTTdtSmtEVWV3TGNKeUFsV2NKMk1oWmJFU1NaZlF5?= =?utf-8?B?ZXZDaG02L1g0eTZXZHREREVZcFYwNEluK1ErWjRrbis5ZGVWUnViZkxMazhQ?= =?utf-8?B?S3hWRXc5NlNveUFuNUc4c3NGUTY0VjZpQzNONW5mZSszNU9yWEFZYkpNMitR?= =?utf-8?B?blVFL0tka2MzRDNQUWhWT1ZJNi9FbmJrWTlQcC9FMkpjbnd1K0sra091MnJs?= =?utf-8?B?Q3YrUzlZSUIzdGdsMzNBZi82VE5UTDlQL1QyaEFqMEVzSCs2T2I1TWtFZDJ5?= =?utf-8?B?Q24yWE45ZUdwUUtpN3FDR0lBNkwyamhHRmk1YTB0OFk3SkNaYnNEODFPbTh2?= =?utf-8?B?Mll4b1c2MTBaWmxkakUzS3ZwOGtCVFlheVF2akJzZG8zMlVMUjNBVXFveXR2?= =?utf-8?B?clhGbFdxNDQrQWs4YTEvaVlqTURDOGhZa3E2cjRRQ2FRSWRxaG5DMEpCN2lG?= =?utf-8?B?dlVZT1E5b1ByUktqSE56WmZnajBnQlp2dk1wejNEM2VYQ1lQd1QrRTVWWUlZ?= =?utf-8?B?UHB1bCtiRzd1cTJGbFgwVlZ2N2UzVjROSkxGT25yNGx0Yjg0R1g5dENkM1Ja?= =?utf-8?B?emNaMmxkRGFHSXhXQlRiUEphTklrTWZsRVVuVGlqNjhJRUxHWmZxK2RrYThx?= =?utf-8?B?N1VuVktqRjBheE5XakowNktIK001aXhzWDk5TXpBWTVweVhNSEZucVVTSm1w?= =?utf-8?B?ZlJMUDhmL2VhRjRoTHg0QnRNTWVhR3VFQXdXdWN4N1AyczN4TUVnM0JjaUF4?= =?utf-8?B?RnVsdHNGaDFtUHdNYWZQZ1V3MG9vai9WRkxMQzBmOWxEekwvSUtkdG96YVdw?= =?utf-8?B?blFFYXNWcVFRTzRoN1NnaTNZTC9RdUl1cHQ4VTJRWGJDbHdIMnc0QjN5U2tR?= =?utf-8?B?L3B6VmJVcGJwZFZSUEhqSFV2d2ZhTXA1UDRZVytYSDVlZ1NCSVRFUnVRQTRt?= =?utf-8?B?cUJWYkNnS1JZSVdVdW9wRG9ycEYxd2R2R0VQZGIyWmxxbFVvTGttSEVjY1Js?= =?utf-8?B?clU0dkpHSGtRUjdZdDVjb0FkS3VWUkZnbUU0UnI5a1lNVGozQms2Zk92c2lh?= =?utf-8?B?aGx1SjFTY2JKME5XZnVkc1N2M3ovd3h2L1lqM25lclVVcmpZRWR3RFJBMFdW?= =?utf-8?B?cTBVZjNvVnFrdWovQUl0aG9sWkN0U1ZuaEc2U294S3FMNTkvNGJnNUFlYWNt?= =?utf-8?B?ZDRHU05TMzZFYnZDVDRSbHpNSnlQT2VRZFNIR2RvVTV2VVIvYkExczhJUUMx?= =?utf-8?B?U2p4OUU4aGNxaGlLSVRkdTZPYkZBTVZWdTFYTTVYRklpeW5NakxYRjh4NlZJ?= =?utf-8?B?aHo2dHBUVHpWbHhlTlg1T0o1cVh3Vmg3bDFURHhBMTZOT3FDVjRCSmJvRnRm?= =?utf-8?B?QUZHeEowOUNoai9icG9Db0ZDUjh1TE9rOFlIZ09SVFgxbVNUUkt3ZDg0aHJn?= =?utf-8?B?QS9Najd6VnNlRVdvS1AwWGJ6Y3E5TlRGdmNiQ1FVRXhQUWp1WWdzVDdNNVZK?= =?utf-8?B?VHhkd1lXcVR2SVd0elRkdDVWQ3czZWhPS0Z1dUFiSEhTd0NDbEorY2ZJRUdh?= =?utf-8?B?cnR6MTZJL3dTbmZCQnNySDkrOVJGSXdzZ2JuZEpucVFxK2NhbG5GZUZIZzYx?= =?utf-8?Q?r9ah3zE+Gv8T8kLyd6cti4C2lBJd1o1blYQGkRi6z?= X-Microsoft-Exchange-Diagnostics: 1; AM5PR0701MB2529; 6:mX2fqvM/BWgMnO0CNMZgIeEfrX3EGQOg6dQBdGBik1Rt40kRW+VnxcMsi4Sljj9l6Fy4FzP8fWlIzJF384B5cB40/AVTi8kKxlQqUrwH07sUDxZhaJ2GFpsmBcADhZfbHjDIZDuLT2V58QtVa0S67YdkqGHNtA8wDkJ4iqwqmpL09EoX8etmSqq6LtF0s7E0UoM3xDUz/xr2pE5Q1OMzpyCXpovPtzRc1gcD2edC962iXCSYMP8pVrQQ/JY6DiCHnKmAQfuw3gGbxUBtEHZ7URqwqjqoE+N0Ivv1EyWqEbBteUovZO2MT7cnCTPVo3Og1X7UVDu0HPt81T7xY0iujA==; 5:LlGTrh8SQz091NvPkDZvsNoEO5UMQ9GtgoPXD7GkLii22IzHUN/LZ+ObxFdQzhiNWoMkuBckMAw1NWSzmbWV7/w/4Bi+oC9yEEXTPHOnT3zGTsdTeGfD0w6DCrrP72tR9NxxWY+E5IoA3BRvgCBHyg==; 24:GnHrwmWsMxU2GY+j5MlRjnVYpZAbOM5oIF7EMQh9Su70YtPAVEVBzJvOKHYbku2ZCLl01iQvylDJr/qtZxGrxUuOhkks4VsX336wAaj/3g4=; 7:7MJ9JPm+td2dni2WXLSPFHtBGYy1o/ln6KL4rBz3HjlCy/e6ns8cPAErvDaVmvJ0Owoy9YSWsdCG880Dy2m5x4Lll4qnluHOVMevubdhdBH8foL6UXWSAzYr52IT6ayE6FX8zuuap/tjL/vXzQ+Tyannl002UTZdLLV8DlGH5VedmEgwv+HrlW7F0uFaxa0Sp1uwSLi6nEIOcFdpMdjoug0/Ro7TnfDSzjZxbSwq2sp12rk/FOydiYLTC2kHbi4B SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-OriginatorOrg: nokia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 31 Aug 2016 11:36:11.0931 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM5PR0701MB2529 Subject: [FFmpeg-devel] [PATCH v2 17/18] doc/examples/extract_timed_metadata: added a bare-bones metadata extractor; find only the frames X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: =?UTF-8?q?Erkki=20Sepp=C3=A4l=C3=A4?= , OZOPlayer Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Signed-off-by: Erkki Seppälä Signed-off-by: OZOPlayer --- doc/examples/Makefile | 1 + doc/examples/extract_timed_metadata.c | 233 ++++++++++++++++++++++++++++++++++ 2 files changed, 234 insertions(+) create mode 100644 doc/examples/extract_timed_metadata.c diff --git a/doc/examples/Makefile b/doc/examples/Makefile index af38159..c10033e 100644 --- a/doc/examples/Makefile +++ b/doc/examples/Makefile @@ -16,6 +16,7 @@ EXAMPLES= avio_dir_cmd \ decoding_encoding \ demuxing_decoding \ extract_mvs \ + extract_timed_metadata \ filtering_video \ filtering_audio \ http_multiclient \ diff --git a/doc/examples/extract_timed_metadata.c b/doc/examples/extract_timed_metadata.c new file mode 100644 index 0000000..e72bd44 --- /dev/null +++ b/doc/examples/extract_timed_metadata.c @@ -0,0 +1,233 @@ +/* + * Copyright (c) 2010 Nicolas George + * Copyright (c) 2011 Stefano Sabatini + * Copyright (c) 2015 Erkki Seppälä + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +/** + * @file + * API example extracting timed metadata + * @example extract_timed_metadata.c + */ + +#define _XOPEN_SOURCE 600 /* for usleep */ +#include +#include + +#include +#include +#include +#include +#include + +#define MAX_METADATA_STREAMS 10 + +static AVFormatContext *fmt_ctx; +static AVCodecContext *dec_ctx[MAX_METADATA_STREAMS]; +static int metadata_stream_indices[MAX_METADATA_STREAMS + 1] = { -1 }; /* terminated with -1 */ + +static int open_input_file(const char *filename) +{ + int ret; + AVCodec *dec = avcodec_find_decoder(AV_CODEC_ID_META); + int i; + int nb_metadata = 0; + + if ((ret = avformat_open_input(&fmt_ctx, filename, NULL, NULL)) < 0) { + av_log(NULL, AV_LOG_ERROR, "Cannot open input file\n"); + return ret; + } + + if ((ret = avformat_find_stream_info(fmt_ctx, NULL)) < 0) { + av_log(NULL, AV_LOG_ERROR, "Cannot find stream information\n"); + return ret; + } + + for (i = 0; i < fmt_ctx->nb_streams; i++) { + if (fmt_ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_DATA) { + assert(nb_metadata < MAX_METADATA_STREAMS); + metadata_stream_indices[nb_metadata] = i; + nb_metadata++; + } + } + metadata_stream_indices[nb_metadata] = -1; + + if (nb_metadata == 0) { + av_log(NULL, AV_LOG_ERROR, "Cannot find a video stream in the input file\n"); + return ret; + } + + for (i = 0; i < nb_metadata; i++) { + dec_ctx[i] = avcodec_alloc_context3(dec); + if ((ret = avcodec_open2(dec_ctx[i], dec, NULL)) < 0) { + av_log(NULL, AV_LOG_ERROR, "Cannot open metadata decoder for metadata stream on track %d\n", i); + return ret; + } + } + + return 0; +} + +static void* memndup(void* ptr, int n) +{ + void* buffer = malloc(n); + memcpy(buffer, ptr, n); + return buffer; +} + +static char* local_strndup(char* str, int n) +{ + int len = 0; + while (str[len] && len < n) { + ++len; + } + char* buffer = malloc(n + 1); + memcpy(buffer, str, n); + buffer[len] = 0; + return buffer; +} + +int main(int argc, char **argv) +{ + int ret; + AVPacket packet; + AVFrame *metadata = av_frame_alloc(); + int i; + + if (!metadata) { + perror("Could not allocate metadata"); + exit(1); + } + if (argc != 2) { + fprintf(stderr, "Usage: %s file\n", argv[0]); + exit(1); + } + + av_register_all(); + + if ((ret = open_input_file(argv[1])) < 0) + goto end; + + for (i = 0; metadata_stream_indices[i] >= 0; i++) { + char *uri = NULL; + int nb_src_idxs; + int *src_idxs = NULL; + char *tref_tag = NULL; + int size; + int trefsSize; + AVTimedMetadata* metadata = + (AVTimedMetadata*) av_stream_get_side_data(fmt_ctx->streams[metadata_stream_indices[i]], + AV_PKT_DATA_TIMED_METADATA_INFO, + &size); + AVTrackReferences* trefs = + (AVTrackReferences*) av_stream_get_side_data(fmt_ctx->streams[metadata_stream_indices[i]], + AV_PKT_DATA_TRACK_REFERENCES, + &trefsSize); + if (!trefs) + printf("No track references!\n"); + else if (!metadata) + printf("No metadata info!\n"); + else if (metadata) { + tref_tag = local_strndup(metadata->meta_tag, 4); + uri = local_strndup((char*) (metadata + 1), metadata->meta_length); + int j; + int conf_len = metadata->conf_length; + void* conf = memndup((char*) (metadata + 1) + metadata->meta_length, metadata->conf_length); + char* conf_tag = local_strndup(metadata->conf_tag, 4); + src_idxs = trefs->tracks; + printf("Track #%d describing track%s ", + metadata_stream_indices[i] + 1, + nb_src_idxs > 1 ? "s" : ""); + for (j = 0; j < trefs->nb_tracks; ++j) + printf("#%d ", trefs->tracks[j]); + printf("with tref %s", + tref_tag); + printf(" url: %s \n", uri); + printf(" configuration conf tag %s, %d bytes:", conf_tag, conf_len); + for (j = 0; j < conf_len; ++j) { + unsigned char ch = ((unsigned char*) conf)[j]; + if (isprint(ch)) { + printf(" %c", ch); + } else { + printf(" %2x", ((unsigned char*) conf)[j]); + } + } + printf("\n"); + free(conf); + free(conf_tag); + free(uri); + free(tref_tag); + } else { + printf("No meta data info for track %d?!\n", metadata_stream_indices[i]); + } + } + + /* read all packets */ + while (1) { + if ((ret = av_read_frame(fmt_ctx, &packet)) < 0) + break; + + for (i = 0; metadata_stream_indices[i] >= 0; i++) { + if (packet.stream_index == metadata_stream_indices[i]) { + ret = avcodec_send_packet(dec_ctx[i], &packet); + + // We always empty decoded frames so we don't handle AVERROR(EAGAIN) here + if (ret < 0) { + av_log(NULL, AV_LOG_ERROR, "Error decoding meta data\n"); + break; + } + + while (avcodec_receive_frame(dec_ctx[i], metadata) == 0) { + int c; + printf("track #%d at %" PRId64 " (%d bytes), ", + packet.stream_index + 1, + metadata->pts, + metadata->buf[0]->size); + for (c = 0; c < metadata->buf[0]->size; ++c) { + char ch = ((char*) metadata->buf[0]->data)[c]; + if (ch == '\\') { + printf("\\\\"); + } else if (isprint(ch)) { + putchar(ch); + } else { + printf("\\0x%2x", (unsigned char) ch); + } + } + putchar('\n'); + } + } + } + av_packet_unref(&packet); + } +end: + for (i = 0; metadata_stream_indices[i] >= 0; i++) { + avcodec_close(dec_ctx[i]); + } + avformat_close_input(&fmt_ctx); + av_frame_free(&metadata); + + if (ret < 0 && ret != AVERROR_EOF) { + fprintf(stderr, "Error occurred: %s\n", av_err2str(ret)); + exit(1); + } + + exit(0); +}