From patchwork Tue Apr 9 14:19:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shivam Goyal X-Patchwork-Id: 12660 Return-Path: X-Original-To: patchwork@ffaux-bg.ffmpeg.org Delivered-To: patchwork@ffaux-bg.ffmpeg.org Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by ffaux.localdomain (Postfix) with ESMTP id 9CB8F4469C7 for ; Tue, 9 Apr 2019 17:19:45 +0300 (EEST) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 81BF468AD2B; Tue, 9 Apr 2019 17:19:45 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail3.iitk.ac.in (mail3.iitk.ac.in [202.3.77.190]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 53A7768A6B4 for ; Tue, 9 Apr 2019 17:19:39 +0300 (EEST) Received: from smtp.cc.iitk.ac.in (smtp.cc.iitk.ac.in [172.31.1.22]) (using TLSv1 with cipher ADH-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mail3.iitk.ac.in (Postfix) with ESMTPS id B2A7E10000A3 for ; Tue, 9 Apr 2019 19:49:35 +0530 (IST) Received: from [192.168.137.116] (unknown [172.24.32.209]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: shivgo) by smtp.cc.iitk.ac.in (Postfix) with ESMTPSA id A3A4651 for ; Tue, 9 Apr 2019 19:49:35 +0530 (IST) To: ffmpeg-devel@ffmpeg.org From: Shivam Goyal Message-ID: Date: Tue, 9 Apr 2019 19:49:35 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.3 MIME-Version: 1.0 Content-Language: en-US Subject: [FFmpeg-devel] [PATCH v5] lavf/flv: Add XV (Xunlei Video) Support. Fixes ticket #3720 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 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" lavf/flv: Add XV (Xunlei Video) Support. Fixes ticket #3720 I have fixed the minor mistakes in the patch. I have also checked the patch with patcheck. From a64698a11c10ec62968a5d853d7db0fed956c0d3 Mon Sep 17 00:00:00 2001 From: Shivam Goyal Date: Tue, 9 Apr 2019 19:25:23 +0530 Subject: [PATCH] lavf/flv: Add XV (Xunlei Video) Support. Fixes ticket #3720. --- Changelog | 1 + libavformat/Makefile | 1 + libavformat/allformats.c | 1 + libavformat/flvdec.c | 85 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 88 insertions(+) diff --git a/Changelog b/Changelog index 8c866cd0c2..4285c20f34 100644 --- a/Changelog +++ b/Changelog @@ -22,6 +22,7 @@ version : - removed libndi-newtek - agm decoder - KUX demuxer +- XV (Xunlie Video) demuxer version 4.1: diff --git a/libavformat/Makefile b/libavformat/Makefile index 99be60d184..e090c051f1 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -561,6 +561,7 @@ OBJS-$(CONFIG_WV_MUXER) += wvenc.o wv.o apetag.o img2.o OBJS-$(CONFIG_XA_DEMUXER) += xa.o OBJS-$(CONFIG_XBIN_DEMUXER) += bintext.o sauce.o OBJS-$(CONFIG_XMV_DEMUXER) += xmv.o +OBJS-$(CONFIG_XV_DEMUXER) += flvdec.o OBJS-$(CONFIG_XVAG_DEMUXER) += xvag.o OBJS-$(CONFIG_XWMA_DEMUXER) += xwma.o OBJS-$(CONFIG_YOP_DEMUXER) += yop.o diff --git a/libavformat/allformats.c b/libavformat/allformats.c index d316a0529a..b499186071 100644 --- a/libavformat/allformats.c +++ b/libavformat/allformats.c @@ -456,6 +456,7 @@ extern AVOutputFormat ff_wv_muxer; extern AVInputFormat ff_xa_demuxer; extern AVInputFormat ff_xbin_demuxer; extern AVInputFormat ff_xmv_demuxer; +extern AVInputFormat ff_xv_demuxer; extern AVInputFormat ff_xvag_demuxer; extern AVInputFormat ff_xwma_demuxer; extern AVInputFormat ff_yop_demuxer; diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index b531a39adc..8226988834 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -127,6 +127,19 @@ static int kux_probe(const AVProbeData *p) return 0; } +static int xv_probe(const AVProbeData *p) +{ + const uint8_t *d = p->buf; + + if (d[0] == 'X' && + d[1] == 'L' && + d[2] == 'V' && + d[3] == 'F') { + return AVPROBE_SCORE_EXTENSION + 1; + } + return 0; +} + static void add_keyframes_index(AVFormatContext *s) { FLVContext *flv = s->priv_data; @@ -459,6 +472,12 @@ static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc, int64_t m } } + if (!strcmp(s->iformat->name , "xv")) { + for (i=0; i < FFMIN(2,fileposlen); i++) { + filepositions[i] += 0x200000; + } + } + if (timeslen == fileposlen && fileposlen>1 && max_pos <= filepositions[0]) { for (i = 0; i < FFMIN(2,fileposlen); i++) { flv->validate_index[i].pos = filepositions[i]; @@ -783,6 +802,51 @@ static int flv_read_header(AVFormatContext *s) return 0; } +static int xv_read_header(AVFormatContext *s) +{ + int flags; + FLVContext *xv = s->priv_data; + AVIOContext *ic = s->pb; + int offset; + int rot; + int64_t pos; + + //Find the rot value for rotating the bytes + avio_skip(ic, 0x200000); + rot = 0x46 - avio_r8(ic); + + avio_skip(ic, 3); + + flags = (avio_r8(ic) + rot) & 0xff; + + xv->missing_streams = flags & (FLV_HEADER_FLAG_HASVIDEO | FLV_HEADER_FLAG_HASAUDIO); + + s->ctx_flags |= AVFMTCTX_NOHEADER; + + offset = ((avio_r8(ic) + rot & 0xff) << 24 | + (avio_r8(ic) + rot & 0xff) << 16 | + (avio_r8(ic) + rot & 0xff) << 8 | + (avio_r8(ic) + rot & 0xff)) + 0x200000; + + avio_seek(ic, offset + 4, SEEK_SET); + + + // Will modify the current buffer, as only + // the bytes from 0x200000 to 0x200400 are needed to decode + pos = ic->pos + ic->buf_ptr - ic->buf_end; + for (int i = 0; i < 0x400; i++) { + if (pos >= 0x200400) break; + ic->buf_ptr[i] = (ic->buf_ptr[i] + rot) & 0xff; + pos++; + } + + s->start_time = 0; + xv->sum_flv_tag_size = 0; + xv->last_keyframe_stream_index = -1; + + return 0; +} + static int flv_read_close(AVFormatContext *s) { int i; @@ -1424,3 +1488,24 @@ AVInputFormat ff_kux_demuxer = { .extensions = "kux", .priv_class = &kux_class, }; + +static const AVClass xv_class = { + .class_name = "xvdec", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, +}; + +AVInputFormat ff_xv_demuxer = { + .name = "xv", + .long_name = NULL_IF_CONFIG_SMALL("Xunlei(Thunder) Video File"), + .priv_data_size = sizeof(FLVContext), + .read_probe = xv_probe, + .read_header = xv_read_header, + .read_packet = flv_read_packet, + .read_seek = flv_read_seek, + .read_close = flv_read_close, + .extensions = "xv", + .priv_class = &xv_class, + .flags = AVFMT_TS_DISCONT +}; \ No newline at end of file -- 2.21.0