> On Mar 27, 2017, at 01:52, Steven Liu <lingjiujia...@gmail.com> wrote:
>
> 2017-03-27 8:39 GMT+08:00 Rodger Combs <rodger.co...@gmail.com
> <mailto:rodger.co...@gmail.com>>:
>
>>
>>> On Mar 26, 2017, at 19:10, Steven Liu <l...@chinaffmpeg.org> wrote:
>>>
>>> v2 fixed:
>>> 1. from autodetect to disabled
>>> 2. from camelCase code style to ffmpeg code style
>>> 3. from RepType to AVMediaType
>>> 4. fix variable typo
>>> 5. change time value from uint32_t to uint64_t
>>> 6. removed be used once API
>>> 7. change 'time(NULL)`, except it is not 2038-safe.' to av_gettime and
>>> av_timegm
>>> 8. merge complex free operation to free_fragment
>>> 9. use API from snprintf to av_asprintf
>>>
>>> v3 fixed:
>>> 1. fix typo from --enabled-xml2 to --enable-xml2
>>>
>>> v4 fixed:
>>> 1. from --enable-xml2 to --enable-libxml2
>>> 2. move system includes to top
>>> 3. remove nouse includes
>>> 4. rename enum name
>>> 5. add a trailing comma for the last entry enum
>>> 6. fix comment typo
>>> 7. add const to DASHContext class front
>>> 8. check sscanf if return arguments and give warning message when error
>>> 9. check validity before free seg->url and seg
>>> 10. check if the val is null, before use atoll
>>>
>>> v5 fixed:
>>> 1. fix typo from mainifest to manifest
>>>
>>> v6 fixed:
>>> 1. from realloc to av_realloc
>>> 2. from free to av_free
>>>
>>> v7 fixed:
>>> 1. remove the -lxml2 from configure when require_pkg_config
>>>
>>> v8 fixed:
>>> 1. fix replace filename template by av_asprintf secure problem
>>>
>>> v9 modified:
>>> 1. make manifest parser clearly
>>>
>>> Reviewed-by: Clément Bœsch <u...@pkh.me>
>>> Reviewed-by: Michael Niedermayer <mich...@niedermayer.cc>
>>> Reviewed-by: Carl Eugen Hoyos <ceho...@ag.or.at>
>>> Reviewed-by: Rodger Combs <rodger.co...@gmail.com>
>>> Reviewed-by: Moritz Barsnick <barsn...@gmx.net>
>>> Reviewed-by: Nicolas George <geo...@nsup.org>
>>> Reviewed-by: Ricardo Constantino <wiia...@gmail.com>
>>> Signed-off-by: Steven Liu <l...@chinaffmpeg.org>
>>> ---
>>> configure | 4 +
>>> libavformat/Makefile | 1 +
>>> libavformat/allformats.c | 2 +-
>>> libavformat/dashdec.c | 1842 ++++++++++++++++++++++++++++++
>> ++++++++++++++++
>>> 4 files changed, 1848 insertions(+), 1 deletion(-)
>>> create mode 100644 libavformat/dashdec.c
>>>
>>> diff --git a/configure b/configure
>>> index 9cc7e7d..4a6fe8a 100755
>>> --- a/configure
>>> +++ b/configure
>>> @@ -273,6 +273,7 @@ External library support:
>>> --enable-libxcb-shape enable X11 grabbing shape rendering
>> [autodetect]
>>> --enable-libxvid enable Xvid encoding via xvidcore,
>>> native MPEG-4/Xvid encoder exists [no]
>>> + --enable-libxml2 enable XML parsing using the C library
>> libxml2 [no]
>>> --enable-libzimg enable z.lib, needed for zscale filter [no]
>>> --enable-libzmq enable message passing via libzmq [no]
>>> --enable-libzvbi enable teletext support via libzvbi [no]
>>> @@ -1574,6 +1575,7 @@ EXTERNAL_LIBRARY_LIST="
>>> libvpx
>>> libwavpack
>>> libwebp
>>> + libxml2
>>> libzimg
>>> libzmq
>>> libzvbi
>>> @@ -2906,6 +2908,7 @@ avi_muxer_select="riffenc"
>>> caf_demuxer_select="iso_media riffdec"
>>> caf_muxer_select="iso_media"
>>> dash_muxer_select="mp4_muxer"
>>> +dash_demuxer_deps="libxml2"
>>> dirac_demuxer_select="dirac_parser"
>>> dts_demuxer_select="dca_parser"
>>> dtshd_demuxer_select="dca_parser"
>>> @@ -5908,6 +5911,7 @@ enabled openssl && { use_pkg_config
>> openssl openssl/ssl.h OPENSSL_init
>>> check_lib openssl/ssl.h SSL_library_init
>> -lssl -lcrypto -lws2_32 -lgdi32 ||
>>> die "ERROR: openssl not found"; }
>>> enabled qtkit_indev && { check_header_objcc QTKit/QTKit.h ||
>> disable qtkit_indev; }
>>> +enabled libxml2 && require_pkg_config libxml-2.0
>> libxml2/libxml/xmlversion.h xmlCheckVersion
>>>
>>> # libdc1394 check
>>> if enabled libdc1394; then
>>> diff --git a/libavformat/Makefile b/libavformat/Makefile
>>> index f56ef16..d77ffaa 100644
>>> --- a/libavformat/Makefile
>>> +++ b/libavformat/Makefile
>>> @@ -134,6 +134,7 @@ OBJS-$(CONFIG_CRC_MUXER) += crcenc.o
>>> OBJS-$(CONFIG_DATA_DEMUXER) += rawdec.o
>>> OBJS-$(CONFIG_DATA_MUXER) += rawenc.o
>>> OBJS-$(CONFIG_DASH_MUXER) += dashenc.o
>>> +OBJS-$(CONFIG_DASH_DEMUXER) += dashdec.o
>>> OBJS-$(CONFIG_DAUD_DEMUXER) += dauddec.o
>>> OBJS-$(CONFIG_DAUD_MUXER) += daudenc.o
>>> OBJS-$(CONFIG_DCSTR_DEMUXER) += dcstr.o
>>> diff --git a/libavformat/allformats.c b/libavformat/allformats.c
>>> index 09e62c3..d57314b 100644
>>> --- a/libavformat/allformats.c
>>> +++ b/libavformat/allformats.c
>>> @@ -96,7 +96,7 @@ static void register_all(void)
>>> REGISTER_DEMUXER (CINE, cine);
>>> REGISTER_DEMUXER (CONCAT, concat);
>>> REGISTER_MUXER (CRC, crc);
>>> - REGISTER_MUXER (DASH, dash);
>>> + REGISTER_MUXDEMUX(DASH, dash);
>>> REGISTER_MUXDEMUX(DATA, data);
>>> REGISTER_MUXDEMUX(DAUD, daud);
>>> REGISTER_DEMUXER (DCSTR, dcstr);
>>> diff --git a/libavformat/dashdec.c b/libavformat/dashdec.c
>>> new file mode 100644
>>> index 0000000..a4d3ba2
>>> --- /dev/null
>>> +++ b/libavformat/dashdec.c
>>> @@ -0,0 +1,1842 @@
>>> +/*
>>> + * Dynamic Adaptive Streaming over HTTP demux
>>> + * Copyright (c) 2017 samsam...@o2.pl based on HLS demux
>>> + * Copyright (c) 2017 Steven Liu
>>> + *
>>> + * This file is part of FFmpeg.
>>> + *
>>> + * FFmpeg 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.
>>> + *
>>> + * FFmpeg 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 FFmpeg; if not, write to the Free Software
>>> + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
>> 02110-1301 USA
>>> + */
>>> +#include <libxml/parser.h>
>>> +#include "libavutil/intreadwrite.h"
>>> +#include "libavutil/opt.h"
>>> +#include "libavutil/time.h"
>>> +#include "libavutil/parseutils.h"
>>> +#include "internal.h"
>>> +#include "avio_internal.h"
>>> +
>>> +#define INITIAL_BUFFER_SIZE 32768
>>> +
>>> +struct fragment {
>>> + int64_t url_offset;
>>> + int64_t size;
>>> + char *url;
>>> +};
>>> +
>>> +/*
>>> + * reference to : ISO_IEC_23009-1-DASH-2012
>>> + * Section: 5.3.9.6.2
>>> + * Table: Table 17 — Semantics of SegmentTimeline element
>>> + * */
>>> +struct timeline {
>>> + /* t: Element or Attribute Name
>>> + * specifies the MPD start time, in @timescale units,
>>> + * the first Segment in the series starts relative to the beginning
>> of the Period.
>>> + * The value of this attribute must be equal to or greater than the
>> sum of the previous S
>>> + * element earliest presentation time and the sum of the contiguous
>> Segment durations.
>>> + * If the value of the attribute is greater than what is expressed
>> by the previous S element,
>>> + * it expresses discontinuities in the timeline.
>>> + * If not present then the value shall be assumed to be zero for
>> the first S element
>>> + * and for the subsequent S elements, the value shall be assumed to
>> be the sum of
>>> + * the previous S element's earliest presentation time and
>> contiguous duration
>>> + * (i.e. previous S@t + @d * (@r + 1)).
>>> + * */
>>> + int64_t t;
>>> + /* r: Element or Attribute Name
>>> + * specifies the repeat count of the number of following contiguous
>> Segments with
>>> + * the same duration expressed by the value of @d. This value is
>> zero-based
>>> + * (e.g. a value of three means four Segments in the contiguous
>> series).
>>> + * */
>>> + int32_t r;
>>> + /* d: Element or Attribute Name
>>> + * specifies the Segment duration, in units of the value of the
>> @timescale.
>>> + * */
>>> + int64_t d;
>>> +};
>>> +
>>> +enum DASHTmplUrlType {
>>> + TMP_URL_TYPE_UNSPECIFIED,
>>> + TMP_URL_TYPE_NUMBER,
>>> + TMP_URL_TYPE_TIME,
>>> +};
>>> +
>>> +/*
>>> + * Each playlist has its own demuxer. If it is currently active,
>>> + * it has an opened AVIOContext too, and potentially an AVPacket
>>> + * containing the next packet from this stream.
>>> + */
>>> +struct representation {
>>> + char *url_template;
>>> + enum DASHTmplUrlType tmp_url_type;
>>> + AVIOContext pb;
>>> + AVIOContext *input;
>>> + AVFormatContext *parent;
>>> + AVFormatContext *ctx;
>>> + AVPacket pkt;
>>> + int rep_idx;
>>> + int rep_count;
>>> + int stream_index;
>>> +
>>> + enum AVMediaType type;
>>> + int64_t target_duration;
>>> +
>>> + int n_fragments;
>>> + struct fragment **fragments; /* VOD list of fragment for profile */
>>> +
>>> + int n_timelines;
>>> + struct timeline **timelines;
>>> +
>>> + int64_t first_seq_no;
>>> + int64_t last_seq_no;
>>> +
>>> + int64_t fragment_duration;
>>> + int64_t fragment_timescale;
>>> +
>>> + int64_t cur_seq_no;
>>> + int64_t cur_seg_offset;
>>> + int64_t cur_seg_size;
>>> + struct fragment *cur_seg;
>>> +
>>> + /* Currently active Media Initialization Section */
>>> + struct fragment *init_section;
>>> + uint8_t *init_sec_buf;
>>> + uint32_t init_sec_buf_size;
>>> + uint32_t init_sec_data_len;
>>> + uint32_t init_sec_buf_read_offset;
>>> + int fix_multiple_stsd_order;
>>> + int64_t cur_timestamp;
>>> +};
>>> +
>>> +typedef struct DASHContext {
>>> + const AVClass *class;
>>> + char *base_url;
>>> + struct representation *cur_video;
>>> + struct representation *cur_audio;
>>> + uint64_t media_presentation_duration_sec;
>>> + uint64_t suggested_presentation_delay_sec;
>>> + uint64_t presentation_delay_sec;
>>> + uint64_t availability_start_time_sec;
>>> + uint64_t publish_time_sec;
>>> + uint64_t minimum_update_period_sec;
>>> + uint64_t time_shift_buffer_depth_sec;
>>> + uint64_t min_buffer_time_sec;
>>> + uint64_t period_duration_sec;
>>> + uint64_t period_start_sec;
>>> + int is_live;
>>> + AVIOInterruptCB *interrupt_callback;
>>> + char *user_agent; ///< holds HTTP user agent set
>> as an AVOption to the HTTP protocol context
>>> + char *cookies; ///< holds HTTP cookie values
>> set in either the initial response or as an AVOption to the HTTP protocol
>> context
>>> + char *headers; ///< holds HTTP headers set as
>> an AVOption to the HTTP protocol context
>>> + AVDictionary *avio_opts;
>>> +} DASHContext;
>>> +
>>> +static uint64_t GetCurrentTimeInSec(void)
>>
>> Code style: "gettime_sec(void)" or the like; not CamelCased.
>>
>>> +{
>>> + return av_gettime() / 1000000;
>>> +}
>>> +
>>> +static uint64_t GetUTCDateTimeInSec(AVFormatContext *s, const char
>> *datetime)
>>
>> I still don't understand why av_parse_time isn't applicable here; it
>> parses ISO-8601 dates just fine.
>>
>>> +{
>>> + struct tm timeinfo;
>>> + int year = 0;
>>> + int month = 0;
>>> + int day = 0;
>>> + int hour = 0;
>>> + int minute = 0;
>>> + int ret = 0;
>>> + float second = 0.0;
>>> +
>>> + /* ISO-8601 date parser */
>>> + if (!datetime)
>>> + return 0;
>>> +
>>> + ret = sscanf(datetime, "%d-%d-%dT%d:%d:%fZ", &year, &month, &day,
>> &hour, &minute, &second);
>>> + /* year, month, day, hour, minute, second 6 arguments */
>>> + if (ret != 6) {
>>> + av_log(s, AV_LOG_WARNING, "GetUTCDateTimeInSec get a wrong time
>> format\n");
>>> + // return 0; /* parser error */
>>> + }
>>> + timeinfo.tm_year = year - 1900;
>>> + timeinfo.tm_mon = month - 1;
>>> + timeinfo.tm_mday = day;
>>> + timeinfo.tm_hour = hour;
>>> + timeinfo.tm_min = minute;
>>> + timeinfo.tm_sec = (int)second;
>>> +
>>> + return av_timegm(&timeinfo);
>>> +}
>>> +
>>> +static uint32_t GetDurationInSec(AVFormatContext *s, const char
>> *duration)
>>
>> Same question here; av_parse_time parses ISO-8601 durations if you set
>> duration=1.
>>
> because i test use av_parse_time look like bellow:
Ah, sorry, you're right; it doesn't support it. Though I think it'd be
preferable to add that functionality to the lavu function (since it's
reasonably useful in general), rather than having it just implemented here.
> 1. add string "PT2M4.0S" into libavutil/tests/parseutils.c, insert into
> static const char * const duration_string[] = {
> "2:34:56.79",
> "-1:23:45.67",
> "42.1729",
> "-1729.42",
> "12:34",
> "PT2M4.0S"
> };
>
> 2. make libavutil/tests/parseutils
> 3. ./libavutil/tests/parseutils
>
> output:
> localhost:dash StevenLiu$ libavutil/tests/parseutils
> objc[70892]: Class SDLTranslatorResponder is implemented in both
> /usr/local/lib/libSDL-1.2.0.dylib (0x10d363660) and
> /usr/local/lib/libSDL2-2.0.0.dylib (0x10a399db8). One of the two will be
> used. Which one is undefined.
> Testing av_parse_video_rate()
> '-inf' -> -1/0 ERROR
> 'inf' -> 1/0 ERROR
> 'nan' -> 0/0 ERROR
> '123/0' -> 1/0 ERROR
> '-123 / 0' -> -1/0 ERROR
> '' -> 0/0 ERROR
> '/' -> 0/0 ERROR
> ' 123 / 321' -> 41/107 OK
> 'foo/foo' -> 0/0 ERROR
> 'foo/1' -> 0/0 ERROR
> '1/foo' -> 1/0 ERROR
> '0/0' -> 0/0 ERROR
> '/0' -> 0/0 ERROR
> '1/' -> 1/0 ERROR
> '1' -> 1/1 OK
> '0' -> 0/1 ERROR
> '-123/123' -> -1/1 ERROR
> '-foo' -> 0/0 ERROR
> '123.23' -> 12323/100 OK
> '.23' -> 23/100 OK
> '-.23' -> -23/100 ERROR
> '-0.234' -> -117/500 ERROR
> '-0.0000001' -> -1/10000000 ERROR
> ' 21332.2324 ' -> 917286/43 OK
> ' -21332.2324 ' -> -917286/43 ERROR
>
> Testing av_parse_color()
> bikeshed -> R(80) G(64) B(140) A(59)
> RaNdOm -> R(185) G(88) B(148) A(94)
> Cannot find color 'foo'
> foo -> error
> red -> R(255) G(0) B(0) A(255)
> Cannot find color 'Red '
> Red -> error
> RED -> R(255) G(0) B(0) A(255)
> Violet -> R(238) G(130) B(238) A(255)
> Yellow -> R(255) G(255) B(0) A(255)
> Red -> R(255) G(0) B(0) A(255)
> 0x000000 -> R(0) G(0) B(0) A(255)
> Invalid 0xRRGGBB[AA] color string: '0000000'
> 0x0000000 -> error
> 0xff000000 -> R(255) G(0) B(0) A(0)
> 0x3e34ff -> R(62) G(52) B(255) A(255)
> 0x3e34ffaa -> R(62) G(52) B(255) A(170)
> Invalid 0xRRGGBB[AA] color string: 'ffXXee'
> 0xffXXee -> error
> Invalid 0xRRGGBB[AA] color string: 'foobar'
> 0xfoobar -> error
> Invalid 0xRRGGBB[AA] color string: 'ffffeeeeeeee'
> 0xffffeeeeeeee -> error
> #ff0000 -> R(255) G(0) B(0) A(255)
> Invalid 0xRRGGBB[AA] color string: 'ffXX00'
> #ffXX00 -> error
> ff0000 -> R(255) G(0) B(0) A(255)
> Cannot find color 'ffXX00'
> ffXX00 -> error
> Invalid alpha value specifier 'foo' in 'red@foo'
> red@foo -> error
> Invalid alpha value specifier '10' in 'random@10'
> random@10 -> error
> 0xff0000@1.0 -> R(255) G(0) B(0) A(255)
> Invalid alpha value specifier '' in 'red@'
> red@ -> error
> Invalid alpha value specifier '0xfff' in 'red@0xfff'
> red@0xfff -> error
> red@0xf -> R(255) G(0) B(0) A(15)
> Invalid alpha value specifier '2' in 'red@2'
> red@2 -> error
> red@0.1 -> R(255) G(0) B(0) A(25)
> Invalid alpha value specifier '-1' in 'red@-1'
> red@-1 -> error
> red@0.5 -> R(255) G(0) B(0) A(127)
> red@1.0 -> R(255) G(0) B(0) A(255)
> Invalid alpha value specifier '256' in 'red@256'
> red@256 -> error
> Invalid alpha value specifier '10foo' in 'red@10foo'
> red@10foo -> error
> Invalid alpha value specifier '-1.0' in 'red@-1.0'
> red@-1.0 -> error
> red@-0.0 -> R(255) G(0) B(0) A(0)
>
> Testing av_small_strptime()
> fmt:'%Y-%m-%d' spec:'2012-12-21' -> 2012-12-21 00:00:00
> fmt:'%Y - %m - %d' spec:'2012-12-21' -> 2012-12-21 00:00:00
> fmt:'%Y-%m-%d %H:%M:%S' spec:'2012-12-21 20:12:21' -> 2012-12-21 20:12:21
> fmt:' %Y - %m - %d %H : %M : %S' spec:' 2012 - 12 - 21 20 : 12 : 21'
> -> 2012-12-21 20:12:21
> fmt:' %Y - %b - %d %H : %M : %S' spec:' 2012 - nOV - 21 20 : 12 : 21'
> -> 2012-11-21 20:12:21
> fmt:' %Y - %B - %d %H : %M : %S' spec:' 2012 - nOVemBeR - 21 20 : 12
> : 21' -> 2012-11-21 20:12:21
> fmt:' %Y - %B%d %H : %M : %S' spec:' 2012 - may21 20 : 12 : 21' ->
> 2012-05-21 20:12:21
> fmt:' %Y - %B%d %H : %M : %S' spec:' 2012 - mby21 20 : 12 : 21' ->
> error
> fmt:' %Y - %B - %d %H : %M : %S' spec:' 2012 - JunE - 21 20 : 12 :
> 21' -> 2012-06-21 20:12:21
> fmt:' %Y - %B - %d %H : %M : %S' spec:' 2012 - Jane - 21 20 : 12 :
> 21' -> error
> fmt:' %Y - %B - %d %H : %M : %S' spec:' 2012 - January - 21 20 : 12 :
> 21' -> 2012-01-21 20:12:21
>
> Testing av_parse_time()
> (now is 2012-03-17 09:14:13.2 +0100, local time is UTC+1)
> now -> 1331972053.200000 = 2012-03-17T08:14:13Z
> 12:35:46 -> 1331984146.000000 = 2012-03-17T11:35:46Z
> 2000-12-20 0:02:47.5z -> 977270567.500000 = 2000-12-20T00:02:47Z
> 2012 - 02-22 17:44:07 -> 1329929047.000000 = 2012-02-22T16:44:07Z
> 2000-12-20T010247.6 -> 977270567.600000 = 2000-12-20T00:02:47Z
> 2000-12-12 1:35:46+05:30 -> 976565146.000000 = 2000-12-11T20:05:46Z
> 2002-12-12 22:30:40-02 -> 1039739440.000000 = 2002-12-13T00:30:40Z
> 2:34:56.79 -> +9296790000
> -1:23:45.67 -> -5025670000
> 42.1729 -> +42172900
> -1729.42 -> -1729420000
> 12:34 -> +754000000
> PT2M4.0S -> error
>
> Testing av_get_known_color_name()
> AliceBlue -> R(240) G(248) B(255) A(0)
> AntiqueWhite -> R(250) G(235) B(215) A(0)
> Aqua -> R(0) G(255) B(255) A(0)
> Aquamarine -> R(127) G(255) B(212) A(0)
> Azure -> R(240) G(255) B(255) A(0)
> Beige -> R(245) G(245) B(220) A(0)
> Bisque -> R(255) G(228) B(196) A(0)
> Black -> R(0) G(0) B(0) A(0)
> BlanchedAlmond -> R(255) G(235) B(205) A(0)
> Blue -> R(0) G(0) B(255) A(0)
> BlueViolet -> R(138) G(43) B(226) A(0)
> Brown -> R(165) G(42) B(42) A(0)
> BurlyWood -> R(222) G(184) B(135) A(0)
> CadetBlue -> R(95) G(158) B(160) A(0)
> Chartreuse -> R(127) G(255) B(0) A(0)
> Chocolate -> R(210) G(105) B(30) A(0)
> Coral -> R(255) G(127) B(80) A(0)
> CornflowerBlue -> R(100) G(149) B(237) A(0)
> Cornsilk -> R(255) G(248) B(220) A(0)
> Crimson -> R(220) G(20) B(60) A(0)
> Cyan -> R(0) G(255) B(255) A(0)
> DarkBlue -> R(0) G(0) B(139) A(0)
> DarkCyan -> R(0) G(139) B(139) A(0)
> DarkGoldenRod -> R(184) G(134) B(11) A(0)
> DarkGray -> R(169) G(169) B(169) A(0)
> DarkGreen -> R(0) G(100) B(0) A(0)
> DarkKhaki -> R(189) G(183) B(107) A(0)
> DarkMagenta -> R(139) G(0) B(139) A(0)
> DarkOliveGreen -> R(85) G(107) B(47) A(0)
> Darkorange -> R(255) G(140) B(0) A(0)
> DarkOrchid -> R(153) G(50) B(204) A(0)
> DarkRed -> R(139) G(0) B(0) A(0)
> DarkSalmon -> R(233) G(150) B(122) A(0)
> DarkSeaGreen -> R(143) G(188) B(143) A(0)
> DarkSlateBlue -> R(72) G(61) B(139) A(0)
> DarkSlateGray -> R(47) G(79) B(79) A(0)
> DarkTurquoise -> R(0) G(206) B(209) A(0)
> DarkViolet -> R(148) G(0) B(211) A(0)
> DeepPink -> R(255) G(20) B(147) A(0)
> DeepSkyBlue -> R(0) G(191) B(255) A(0)
> DimGray -> R(105) G(105) B(105) A(0)
> DodgerBlue -> R(30) G(144) B(255) A(0)
> FireBrick -> R(178) G(34) B(34) A(0)
> FloralWhite -> R(255) G(250) B(240) A(0)
> ForestGreen -> R(34) G(139) B(34) A(0)
> Fuchsia -> R(255) G(0) B(255) A(0)
> Gainsboro -> R(220) G(220) B(220) A(0)
> GhostWhite -> R(248) G(248) B(255) A(0)
> Gold -> R(255) G(215) B(0) A(0)
> GoldenRod -> R(218) G(165) B(32) A(0)
> Gray -> R(128) G(128) B(128) A(0)
> Green -> R(0) G(128) B(0) A(0)
> GreenYellow -> R(173) G(255) B(47) A(0)
> HoneyDew -> R(240) G(255) B(240) A(0)
> HotPink -> R(255) G(105) B(180) A(0)
> IndianRed -> R(205) G(92) B(92) A(0)
> Indigo -> R(75) G(0) B(130) A(0)
> Ivory -> R(255) G(255) B(240) A(0)
> Khaki -> R(240) G(230) B(140) A(0)
> Lavender -> R(230) G(230) B(250) A(0)
> LavenderBlush -> R(255) G(240) B(245) A(0)
> LawnGreen -> R(124) G(252) B(0) A(0)
> LemonChiffon -> R(255) G(250) B(205) A(0)
> LightBlue -> R(173) G(216) B(230) A(0)
> LightCoral -> R(240) G(128) B(128) A(0)
> LightCyan -> R(224) G(255) B(255) A(0)
> LightGoldenRodYellow -> R(250) G(250) B(210) A(0)
> LightGreen -> R(144) G(238) B(144) A(0)
> LightGrey -> R(211) G(211) B(211) A(0)
> LightPink -> R(255) G(182) B(193) A(0)
> LightSalmon -> R(255) G(160) B(122) A(0)
> LightSeaGreen -> R(32) G(178) B(170) A(0)
> LightSkyBlue -> R(135) G(206) B(250) A(0)
> LightSlateGray -> R(119) G(136) B(153) A(0)
> LightSteelBlue -> R(176) G(196) B(222) A(0)
> LightYellow -> R(255) G(255) B(224) A(0)
> Lime -> R(0) G(255) B(0) A(0)
> LimeGreen -> R(50) G(205) B(50) A(0)
> Linen -> R(250) G(240) B(230) A(0)
> Magenta -> R(255) G(0) B(255) A(0)
> Maroon -> R(128) G(0) B(0) A(0)
> MediumAquaMarine -> R(102) G(205) B(170) A(0)
> MediumBlue -> R(0) G(0) B(205) A(0)
> MediumOrchid -> R(186) G(85) B(211) A(0)
> MediumPurple -> R(147) G(112) B(216) A(0)
> MediumSeaGreen -> R(60) G(179) B(113) A(0)
> MediumSlateBlue -> R(123) G(104) B(238) A(0)
> MediumSpringGreen -> R(0) G(250) B(154) A(0)
> MediumTurquoise -> R(72) G(209) B(204) A(0)
> MediumVioletRed -> R(199) G(21) B(133) A(0)
> MidnightBlue -> R(25) G(25) B(112) A(0)
> MintCream -> R(245) G(255) B(250) A(0)
> MistyRose -> R(255) G(228) B(225) A(0)
> Moccasin -> R(255) G(228) B(181) A(0)
> NavajoWhite -> R(255) G(222) B(173) A(0)
> Navy -> R(0) G(0) B(128) A(0)
> OldLace -> R(253) G(245) B(230) A(0)
> Olive -> R(128) G(128) B(0) A(0)
> OliveDrab -> R(107) G(142) B(35) A(0)
> Orange -> R(255) G(165) B(0) A(0)
> OrangeRed -> R(255) G(69) B(0) A(0)
>
>
> Orchid -> R(218) G(112) B(214) A(0)
> PaleGoldenRod -> R(238) G(232) B(170) A(0)
> PaleGreen -> R(152) G(251) B(152) A(0)
> PaleTurquoise -> R(175) G(238) B(238) A(0)
> PaleVioletRed -> R(216) G(112) B(147) A(0)
> PapayaWhip -> R(255) G(239) B(213) A(0)
> PeachPuff -> R(255) G(218) B(185) A(0)
> Peru -> R(205) G(133) B(63) A(0)
> Pink -> R(255) G(192) B(203) A(0)
> Plum -> R(221) G(160) B(221) A(0)
> PowderBlue -> R(176) G(224) B(230) A(0)
> Purple -> R(128) G(0) B(128) A(0)
> Red -> R(255) G(0) B(0) A(0)
> RosyBrown -> R(188) G(143) B(143) A(0)
> RoyalBlue -> R(65) G(105) B(225) A(0)
> SaddleBrown -> R(139) G(69) B(19) A(0)
> Salmon -> R(250) G(128) B(114) A(0)
> SandyBrown -> R(244) G(164) B(96) A(0)
> SeaGreen -> R(46) G(139) B(87) A(0)
> SeaShell -> R(255) G(245) B(238) A(0)
> Sienna -> R(160) G(82) B(45) A(0)
> Silver -> R(192) G(192) B(192) A(0)
> SkyBlue -> R(135) G(206) B(235) A(0)
> SlateBlue -> R(106) G(90) B(205) A(0)
> SlateGray -> R(112) G(128) B(144) A(0)
> Snow -> R(255) G(250) B(250) A(0)
> SpringGreen -> R(0) G(255) B(127) A(0)
> SteelBlue -> R(70) G(130) B(180) A(0)
> Tan -> R(210) G(180) B(140) A(0)
> Teal -> R(0) G(128) B(128) A(0)
> Thistle -> R(216) G(191) B(216) A(0)
> Tomato -> R(255) G(99) B(71) A(0)
> Turquoise -> R(64) G(224) B(208) A(0)
> Violet -> R(238) G(130) B(238) A(0)
> Wheat -> R(245) G(222) B(179) A(0)
> White -> R(255) G(255) B(255) A(0)
> WhiteSmoke -> R(245) G(245) B(245) A(0)
> Yellow -> R(255) G(255) B(0) A(0)
> YellowGreen -> R(154) G(205) B(50) A(0)
>
> Testing av_find_info_tag()
> 0. tag1 found: val1
> 1. tag2 found: val2
> 2. tag3 found: val3
> 3. tag4 not found
> 4. tag41 found: value 41
> 5. 41 not found
> 6. random1 not found
>
>
>
>
>
>
>
>
>>
>>> +{
>>> + /* ISO-8601 duration parser */
>>> + uint32_t days = 0;
>>> + uint32_t hours = 0;
>>> + uint32_t mins = 0;
>>> + uint32_t secs = 0;
>>> + uint32_t size = 0;
>>> + float value = 0;
>>> + uint8_t type = 0;
>>> + const char *ptr = duration;
>>> +
>>> + while (*ptr) {
>>> + if (*ptr == 'P' || *ptr == 'T') {
>>> + ptr++;
>>> + continue;
>>> + }
>>> +
>>> + if (sscanf(ptr, "%f%c%n", &value, &type, &size) != 2) {
>>> + av_log(s, AV_LOG_WARNING, "GetDurationInSec get a wrong
>> time format\n");
>>> + return 0; /* parser error */
>>> + }
>>> + switch (type) {
>>> + case 'D':
>>> + days = (uint32_t)value;
>>> + break;
>>> + case 'H':
>>> + hours = (uint32_t)value;
>>> + break;
>>> + case 'M':
>>> + mins = (uint32_t)value;
>>> + break;
>>> + case 'S':
>>> + secs = (uint32_t)value;
>>> + break;
>>> + default:
>>> + // handle invalid type
>>> + break;
>>> + }
>>> + ptr += size;
>>> + }
>>> + return ((days * 24 + hours) * 60 + mins) * 60 + secs;
>>> +}
>>> +
>>> +static void free_fragment(struct fragment **seg)
>>> +{
>>> + if (!(*seg)) {
>>> + return;
>>> + }
>>> + av_freep(&(*seg)->url);
>>> + av_freep(seg);
>>> +}
>>> +
>>> +static void free_fragment_list(struct representation *pls)
>>> +{
>>> + int i;
>>> +
>>> + for (i = 0; i < pls->n_fragments; i++) {
>>> + free_fragment(&pls->fragments[i]);
>>> + }
>>> + av_freep(&pls->fragments);
>>> + pls->n_fragments = 0;
>>> +}
>>> +
>>> +static void free_timelines_list(struct representation *pls)
>>> +{
>>> + int i;
>>> +
>>> + for (i = 0; i < pls->n_timelines; i++) {
>>> + av_freep(&pls->timelines[i]);
>>> + }
>>> + av_freep(&pls->timelines);
>>> + pls->n_timelines = 0;
>>> +}
>>> +
>>> +/*
>>> + * Used to reset a statically allocated AVPacket to a clean slate,
>>> + * containing no data.
>>> + */
>>> +static void reset_packet(AVPacket *pkt)
>>> +{
>>> + av_init_packet(pkt);
>>> + pkt->data = NULL;
>>> +}
>>> +
>>> +static void free_representation(struct representation *pls)
>>> +{
>>> + free_fragment_list(pls);
>>> + free_timelines_list(pls);
>>> + free_fragment(&pls->cur_seg);
>>> + free_fragment(&pls->init_section);
>>> + av_freep(&pls->init_sec_buf);
>>> + av_packet_unref(&pls->pkt);
>>> + reset_packet(&pls->pkt);
>>> + av_freep(&pls->pb.buffer);
>>> + if (pls->input)
>>> + ff_format_io_close(pls->parent, &pls->input);
>>> + if (pls->ctx) {
>>> + pls->ctx->pb = NULL;
>>> + avformat_close_input(&pls->ctx);
>>> + }
>>> +
>>> + av_free(pls->url_template);
>>> + av_free(pls);
>>> +}
>>> +
>>> +static void update_options(char **dest, const char *name, void *src)
>>> +{
>>> + av_freep(dest);
>>> + av_opt_get(src, name, AV_OPT_SEARCH_CHILDREN, (uint8_t**)dest);
>>> + if (*dest)
>>> + av_freep(dest);
>>> +}
>>> +
>>> +static int open_url(AVFormatContext *s, AVIOContext **pb, const char
>> *url,
>>> + AVDictionary *opts, AVDictionary *opts2, int
>> *is_http)
>>> +{
>>> + DASHContext *c = s->priv_data;
>>> + AVDictionary *tmp = NULL;
>>> + const char *proto_name = NULL;
>>> + int ret;
>>> +
>>> + av_dict_copy(&tmp, opts, 0);
>>> + av_dict_copy(&tmp, opts2, 0);
>>> +
>>> + if (av_strstart(url, "crypto", NULL)) {
>>> + if (url[6] == '+' || url[6] == ':')
>>> + proto_name = avio_find_protocol_name(url + 7);
>>> + }
>>> +
>>> + if (!proto_name)
>>> + proto_name = avio_find_protocol_name(url);
>>> +
>>> + if (!proto_name)
>>> + return AVERROR_INVALIDDATA;
>>> +
>>> + // only http(s) & file are allowed
>>> + if (!av_strstart(proto_name, "http", NULL) &&
>> !av_strstart(proto_name, "file", NULL))
>>> + return AVERROR_INVALIDDATA;
>>> + if (!strncmp(proto_name, url, strlen(proto_name)) &&
>> url[strlen(proto_name)] == ':')
>>> + ;
>>> + else if (av_strstart(url, "crypto", NULL) && !strncmp(proto_name,
>> url + 7, strlen(proto_name)) && url[7 + strlen(proto_name)] == ':')
>>> + ;
>>> + else if (strcmp(proto_name, "file") || !strncmp(url, "file,", 5))
>>> + return AVERROR_INVALIDDATA;
>>> +
>>> + ret = s->io_open(s, pb, url, AVIO_FLAG_READ, &tmp);
>>> + if (ret >= 0) {
>>> + // update cookies on http response with setcookies.
>>> + void *u = (s->flags & AVFMT_FLAG_CUSTOM_IO) ? NULL : s->pb;
>>> + update_options(&c->cookies, "cookies", u);
>>> + av_dict_set(&opts, "cookies", c->cookies, 0);
>>> + }
>>> +
>>> + av_dict_free(&tmp);
>>> +
>>> + if (is_http)
>>> + *is_http = av_strstart(proto_name, "http", NULL);
>>> +
>>> + return ret;
>>> +
>>> +}
>>> +
>>> +static char *strreplace(const char *str, const char *from, const char
>> *to)
>>> +{
>>> + /* Adjust each of the below values to suit your needs. */
>>> + /* Increment positions cache size initially by this number. */
>>> + size_t cache_sz_inc = 16;
>>> + /* Thereafter, each time capacity needs to be increased,
>>> + * multiply the increment by this factor. */
>>> + const size_t cache_sz_inc_factor = 3;
>>> + /* But never increment capacity by more than this number. */
>>> + const size_t cache_sz_inc_max = 1048576;
>>> +
>>> + char *pret, *ret = NULL;
>>> + const char *pstr2, *pstr = str;
>>> + size_t i, count = 0;
>>> + uintptr_t *pos_cache_tmp, *pos_cache = NULL;
>>> + size_t cache_sz = 0;
>>> + size_t cpylen, orglen, retlen, tolen, fromlen = strlen(from);
>>> +
>>> + /* Find all matches and cache their positions. */
>>> + while ((pstr2 = av_stristr(pstr, from))) {
>>> + count++;
>>> + /* Increase the cache size when necessary. */
>>> + if (cache_sz < count) {
>>> + cache_sz += cache_sz_inc;
>>> + pos_cache_tmp = av_realloc(pos_cache, sizeof(*pos_cache) *
>> cache_sz);
>>> + if (!pos_cache_tmp) {
>>> + goto end_strreplace;
>>> + } else pos_cache = pos_cache_tmp;
>>> + cache_sz_inc *= cache_sz_inc_factor;
>>> + if (cache_sz_inc > cache_sz_inc_max) {
>>> + cache_sz_inc = cache_sz_inc_max;
>>> + }
>>> + }
>>> +
>>> + pos_cache[count-1] = pstr2 - str;
>>> + pstr = pstr2 + fromlen;
>>> + }
>>> + orglen = pstr - str + strlen(pstr);
>>> + /* Allocate memory for the post-replacement string. */
>>> + if (count > 0) {
>>> + tolen = strlen(to);
>>> + retlen = orglen + (tolen - fromlen) * count;
>>> + } else {
>>> + retlen = orglen;
>>> + }
>>> + ret = av_malloc(retlen + 1);
>>> + if (!ret) {
>>> + goto end_strreplace;
>>> + }
>>> +
>>> + if (!count) {
>>> + /* If no matches, then just duplicate the string. */
>>> + av_strlcpy(ret, str, retlen + 1);
>>> + } else {
>>> + /* Otherwise, duplicate the string whilst performing
>>> + * the replacements using the position cache. */
>>> + pret = ret;
>>> + memcpy(pret, str, pos_cache[0]);
>>> + pret += pos_cache[0];
>>> + for (i = 0; i < count; i++) {
>>> + memcpy(pret, to, tolen);
>>> + pret += tolen;
>>> + pstr = str + pos_cache[i] + fromlen;
>>> + cpylen = (i == count-1 ? orglen : pos_cache[i+1]) -
>> pos_cache[i] - fromlen;
>>> + memcpy(pret, pstr, cpylen);
>>> + pret += cpylen;
>>> + }
>>> + ret[retlen] = '\0';
>>> + }
>>> +
>>> +end_strreplace:
>>> + /* Free the cache and return the post-replacement string,
>>> + * which will be NULL in the event of an error. */
>>> + av_free(pos_cache);
>>> + return ret;
>>> +}
>>> +
>>> +static char *replace_template_str(const char *url, const char *marker)
>>> +{
>>> + char *prefix = NULL;
>>> + char *start = 0;
>>> + char *end = NULL;
>>> + char *tmp_url = NULL;
>>> + char *new_url = NULL;
>>> + int marker_len;
>>> +
>>> + prefix = av_strdup(marker);
>>> + marker_len = strlen(prefix) - 1;
>>> + prefix[marker_len] = '\0';
>>> +
>>> + start = av_stristr(url, prefix);
>>> + if (!start)
>>> + goto finish;
>>> + end = strchr(start + 1, '$');
>>> + if (!end)
>>> + goto finish;
>>> +
>>> + tmp_url = av_mallocz(MAX_URL_SIZE);
>>> + if (!tmp_url) {
>>> + return NULL;
>>> + }
>>> +
>>> + av_strlcpy(tmp_url, url, start - url+ 1);
>>> + av_strlcat(tmp_url, start + marker_len, strlen(tmp_url) + end -
>> start - marker_len + 1);
>>> + av_strlcat(tmp_url, end + 1, MAX_URL_SIZE);
>>> +
>>> +finish:
>>> + av_free(prefix);
>>> + new_url = strreplace(tmp_url ? tmp_url : url, marker, "%"PRId64);
>>
>> Since you're no longer using a printf function, this replacement doesn't
>> make sense. You should replace with the actual value you want to substitute
>> instead.
>>
>>> + av_free(tmp_url);
>>> + return new_url;
>>> +}
>>> +
>>> +static char *get_content_url(xmlNodePtr *baseurl_nodes, int
>> n_baseurl_nodes, xmlChar *rep_id_val, xmlChar *rep_bandwidth_val, xmlChar
>> *val)
>>> +{
>>> + int i;
>>> + xmlChar *text;
>>> + char *url = NULL;
>>> + char *tmp_str = av_mallocz(MAX_URL_SIZE);
>>> + char *tmp_str_2 = NULL;
>>> +
>>> + if (!tmp_str) {
>>> + return NULL;
>>> + }
>>> + for (i = 0; i < n_baseurl_nodes; ++i) {
>>> + if (baseurl_nodes[i] && baseurl_nodes[i]->children &&
>> baseurl_nodes[i]->children->type == XML_TEXT_NODE) {
>>> + text = xmlNodeGetContent(baseurl_nodes[i]->children);
>>> + if (text) {
>>> + tmp_str_2 = av_mallocz(MAX_URL_SIZE);
>>> + if (!tmp_str_2) {
>>> + av_free(tmp_str);
>>> + return NULL;
>>> + }
>>> + ff_make_absolute_url(tmp_str_2, MAX_URL_SIZE, tmp_str,
>> text);
>>> + av_free(tmp_str);
>>> + tmp_str = tmp_str_2;
>>> + xmlFree(text);
>>> + }
>>> + }
>>> + }
>>> + if (val)
>>> + av_strlcat(tmp_str, (const char*)val, MAX_URL_SIZE);
>>> + if (rep_id_val) {
>>> + url = strreplace(tmp_str, "$RepresentationID$", (const
>> char*)rep_id_val);
>>> + av_free(tmp_str);
>>> + tmp_str = url;
>>> + }
>>> + if (rep_bandwidth_val && tmp_str)
>>> + url = strreplace(tmp_str, "$Bandwidth$", (const
>> char*)rep_bandwidth_val);
>>> + if (tmp_str != url)
>>> + av_free(tmp_str);
>>> + return url;
>>> +}
>>> +
>>> +static xmlChar *get_val_from_nodes_tab(xmlNodePtr *nodes, const int
>> n_nodes, const xmlChar *attrname)
>>> +{
>>> + int i;
>>> + xmlChar *val;
>>> +
>>> + for (i = 0; i < n_nodes; ++i) {
>>> + if (nodes[i]) {
>>> + val = xmlGetProp(nodes[i], attrname);
>>> + if (val)
>>> + return val;
>>> + }
>>> + }
>>> +
>>> + return NULL;
>>> +}
>>> +
>>> +static xmlNodePtr findChildNodeByName(xmlNodePtr rootnode, const
>> xmlChar *nodename)
>>> +{
>>> + xmlNodePtr node = rootnode;
>>> + if (!node) {
>>> + return NULL;
>>> + }
>>> +
>>> + node = xmlFirstElementChild(node);
>>> + while (node) {
>>> + if (!xmlStrcmp(node->name, nodename)) {
>>> + return node;
>>> + }
>>> + node = xmlNextElementSibling(node);
>>> + }
>>> + return NULL;
>>> +}
>>> +
>>> +static enum AVMediaType get_content_type(xmlNodePtr node)
>>> +{
>>> + enum AVMediaType type = AVMEDIA_TYPE_UNKNOWN;
>>> + int i = 0;
>>> + const char *attr;
>>> +
>>> + if (node) {
>>> + while (type == AVMEDIA_TYPE_UNKNOWN && i < 2) {
>>> + attr = (i) ? "mimeType" : "contentType";
>>> + xmlChar *val = xmlGetProp(node, attr);
>>> + if (val) {
>>> + if (av_stristr((const char *)val, "video")) {
>>> + type = AVMEDIA_TYPE_VIDEO;
>>> + } else if (av_stristr((const char *)val, "audio")) {
>>> + type = AVMEDIA_TYPE_AUDIO;
>>> + }
>>> + xmlFree(val);
>>> + }
>>> + i++;
>>> + }
>>> + }
>>> + return type;
>>> +}
>>> +
>>> +static int parse_manifest_segmenturlnode(AVFormatContext *s, struct
>> representation *rep,
>>> + xmlNodePtr fragmenturl_node,
>>> + xmlNodePtr *baseurl_nodes,
>>> + xmlChar *rep_id_val,
>>> + xmlChar *rep_bandwidth_val)
>>> +{
>>> + xmlChar *initialization_val = NULL;
>>> + xmlChar *media_val = NULL;
>>> +
>>> + if (!xmlStrcmp(fragmenturl_node->name, (const xmlChar
>> *)"Initialization")) {
>>> + initialization_val = xmlGetProp(fragmenturl_node, "sourceURL");
>>> + if (initialization_val) {
>>> + rep->init_section = av_mallocz(sizeof(struct fragment));
>>> + if (!rep->init_section) {
>>> + xmlFree(initialization_val);
>>> + return AVERROR(ENOMEM);
>>> + }
>>> + rep->init_section->url = get_content_url(baseurl_nodes, 4,
>> rep_id_val, rep_bandwidth_val, initialization_val);
>>> + rep->init_section->size = -1;
>>> + xmlFree(initialization_val);
>>> + }
>>> + } else if (!xmlStrcmp(fragmenturl_node->name, (const xmlChar
>> *)"SegmentURL")) {
>>> + media_val = xmlGetProp(fragmenturl_node, "media");
>>> + if (media_val) {
>>> + struct fragment *seg = av_mallocz(sizeof(struct fragment));
>>> + if (!seg) {
>>> + xmlFree(media_val);
>>> + return AVERROR(ENOMEM);
>>> + }
>>> + seg->url = get_content_url(baseurl_nodes, 4, rep_id_val,
>> rep_bandwidth_val, media_val);
>>> + seg->size = -1;
>>> + dynarray_add(&rep->fragments, &rep->n_fragments, seg);
>>> + xmlFree(media_val);
>>> + }
>>> + }
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int parse_manifest_segmenttimeline(AVFormatContext *s, struct
>> representation *rep,
>>> + xmlNodePtr
>> fragment_timeline_node)
>>> +{
>>> + xmlAttrPtr attr = NULL;
>>> + xmlChar *val = NULL;
>>> +
>>> + if (!xmlStrcmp(fragment_timeline_node->name, (const xmlChar
>> *)"S")) {
>>> + struct timeline *tml = av_mallocz(sizeof(struct timeline));
>>> + if (!tml) {
>>> + return AVERROR(ENOMEM);
>>> + }
>>> + attr = fragment_timeline_node->properties;
>>> + while (attr) {
>>> + val = xmlGetProp(fragment_timeline_node, attr->name);
>>> +
>>> + if (!val) {
>>> + av_log(s, AV_LOG_WARNING, "parse_manifest_segmenttimeline
>> attr->name = %s val is NULL\n", attr->name);
>>> + continue;
>>> + }
>>> +
>>> + if (!xmlStrcmp(attr->name, (const xmlChar *)"t")) {
>>> + tml->t = (int64_t)atoll((const char *)val);
>>> + } else if (!xmlStrcmp(attr->name, (const xmlChar *)"r")) {
>>> + tml->r =(int32_t) atoi((const char *)val);
>>> + } else if (!xmlStrcmp(attr->name, (const xmlChar *)"d")) {
>>> + tml->d = (int64_t)atoll((const char *)val);
>>> + rep->fragment_duration = (int64_t) atoll((const char
>> *)val);
>>> + }
>>> + attr = attr->next;
>>> + xmlFree(val);
>>> + }
>>> + dynarray_add(&rep->timelines, &rep->n_timelines, tml);
>>> + }
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int parse_manifest_representation(AVFormatContext *s, const
>> char *url,
>>> + xmlNodePtr node,
>>> + xmlNodePtr adaptionset_node,
>>> + xmlNodePtr mpd_baseurl_node,
>>> + xmlNodePtr
>> period_baseurl_node,
>>> + xmlNodePtr
>> fragment_template_node,
>>> + xmlNodePtr
>> content_component_node,
>>> + xmlNodePtr
>> adaptionset_baseurl_node)
>>> +{
>>> + int32_t ret = 0;
>>> + int32_t audio_rep_idx = 0;
>>> + int32_t video_rep_idx = 0;
>>> + char *temp_string = NULL;
>>> + DASHContext *c = s->priv_data;
>>> + struct representation *rep = NULL;
>>> + struct fragment *seg = NULL;
>>> + xmlNodePtr representation_segmenttemplate_node = NULL;
>>> + xmlNodePtr representation_baseurl_node = NULL;
>>> + xmlNodePtr representation_segmentlist_node = NULL;
>>> + xmlNodePtr fragment_timeline_node = NULL;
>>> + xmlNodePtr fragment_templates_tab[2];
>>> + xmlChar *duration_val = NULL;
>>> + xmlChar *startnumber_val = NULL;
>>> + xmlChar *timescale_val = NULL;
>>> + xmlChar *initialization_val = NULL;
>>> + xmlChar *media_val = NULL;
>>> + xmlNodePtr baseurl_nodes[4];
>>> + xmlNodePtr representation_node = node;
>>> + xmlChar *rep_id_val = xmlGetProp(representation_node, "id");
>>> + xmlChar *rep_bandwidth_val = xmlGetProp(representation_node,
>> "bandwidth");
>>> + enum AVMediaType type = AVMEDIA_TYPE_UNKNOWN;
>>> +
>>> + // try get information from representation
>>> + if (type == AVMEDIA_TYPE_UNKNOWN)
>>> + type = get_content_type(representation_node);
>>> + // try get information from contentComponen
>>> + if (type == AVMEDIA_TYPE_UNKNOWN)
>>> + type = get_content_type(content_component_node);
>>> + // try get information from adaption set
>>> + if (type == AVMEDIA_TYPE_UNKNOWN)
>>> + type = get_content_type(adaptionset_node);
>>> + if (type == AVMEDIA_TYPE_UNKNOWN) {
>>> + av_log(s, AV_LOG_VERBOSE, "Parsing '%s' - skipp not supported
>> representation type\n", url);
>>> + } else if ((type == AVMEDIA_TYPE_VIDEO && !c->cur_video) || (type
>> == AVMEDIA_TYPE_AUDIO && !c->cur_audio)) {
>>> + // convert selected representation to our internal struct
>>> + rep = av_mallocz(sizeof(struct representation));
>>> + if (!rep) {
>>> + ret = AVERROR(ENOMEM);
>>> + goto end;
>>> + }
>>> + representation_segmenttemplate_node =
>>> findChildNodeByName(representation_node,
>> "SegmentTemplate");
>>> + representation_baseurl_node =
>>> findChildNodeByName(representation_node,
>> "BaseURL");
>>> + representation_segmentlist_node =
>>> findChildNodeByName(representation_node,
>> "SegmentList");
>>> + reset_packet(&rep->pkt);
>>> +
>>> + baseurl_nodes[0] = mpd_baseurl_node;
>>> + baseurl_nodes[1] = period_baseurl_node;
>>> + baseurl_nodes[2] = adaptionset_baseurl_node;
>>> + baseurl_nodes[3] = representation_baseurl_node;
>>> +
>>> + if (representation_segmenttemplate_node ||
>> fragment_template_node) {
>>> + fragment_timeline_node = NULL;
>>> + fragment_templates_tab[0] = representation_
>> segmenttemplate_node;
>>> + fragment_templates_tab[1] = fragment_template_node;
>>> +
>>> + duration_val = get_val_from_nodes_tab(fragment_templates_tab,
>> 2, "duration");
>>> + startnumber_val =
>>> get_val_from_nodes_tab(fragment_templates_tab,
>> 2, "startNumber");
>>> + timescale_val = get_val_from_nodes_tab(fragment_templates_tab,
>> 2, "timescale");
>>> + initialization_val =
>>> get_val_from_nodes_tab(fragment_templates_tab,
>> 2, "initialization");
>>> + media_val = get_val_from_nodes_tab(fragment_templates_tab,
>> 2, "media");
>>> +
>>> + if (initialization_val) {
>>> + rep->init_section = av_mallocz(sizeof(struct fragment));
>>> + if (!rep->init_section) {
>>> + av_free(rep);
>>> + ret = AVERROR(ENOMEM);
>>> + goto end;
>>> + }
>>> + rep->init_section->url = get_content_url(baseurl_nodes,
>> 4, rep_id_val, rep_bandwidth_val, initialization_val);
>>> + rep->init_section->size = -1;
>>> + xmlFree(initialization_val);
>>> + }
>>> +
>>> + if (media_val) {
>>> + temp_string = get_content_url(baseurl_nodes, 4,
>> rep_id_val, rep_bandwidth_val, media_val);
>>> + if (temp_string) {
>>> + if (av_stristr(temp_string, "$Number")) {
>>> + rep->url_template = av_strdup(temp_string);
>>
>> Since you're no longer replacing here, this if/else tree mostly doesn't
>> make sense anymore. You should remove the av_free below and store the
>> result of get_content_url() directly to rep->url_template, and just have a
>> check here to set tmp_url_type. Also, you need to check for a NULL return
>> from get_content_url.
>>
>>> + /* A URL template is provided from which
>> clients build a chunk list
>>> + * where the chunk URLs include chunk numbers
>> (like index numbers).
>>> + */
>>> + rep->tmp_url_type = TMP_URL_TYPE_NUMBER; /*
>> Number-Based. */
>>> + } else if (av_stristr(temp_string, "$Time")) {
>>> + rep->url_template = av_strdup(temp_string);
>>> + /* A URL template is provided from which
>> clients build a chunk list
>>> + * where the chunk URLs include chunk start
>> times.
>>> + */
>>> + rep->tmp_url_type = TMP_URL_TYPE_TIME; /*
>> Time-Based. */
>>> + } else {
>>> + rep->url_template = temp_string;
>>> + temp_string = NULL;
>>> + }
>>> + av_free(temp_string);
>>> + }
>>> + xmlFree(media_val);
>>> + }
>>> + if (duration_val) {
>>> + rep->fragment_duration = (int64_t) atoll((const char
>> *)duration_val);
>>> + xmlFree(duration_val);
>>> + }
>>> + if (timescale_val) {
>>> + rep->fragment_timescale = (int64_t) atoll((const char
>> *)timescale_val);
>>> + xmlFree(timescale_val);
>>> + }
>>> + if (startnumber_val) {
>>> + rep->first_seq_no = (int64_t) atoll((const char
>> *)startnumber_val);
>>> + xmlFree(startnumber_val);
>>> + }
>>> +
>>> + fragment_timeline_node = findChildNodeByName(
>> representation_segmenttemplate_node, "SegmentTimeline");
>>> +
>>> + if (!fragment_timeline_node)
>>> + fragment_timeline_node =
>>> findChildNodeByName(fragment_template_node,
>> "SegmentTimeline");
>>> + if (fragment_timeline_node) {
>>> + fragment_timeline_node = xmlFirstElementChild(fragment_
>> timeline_node);
>>> + while (fragment_timeline_node) {
>>> + ret = parse_manifest_segmenttimeline(s, rep,
>> fragment_timeline_node);
>>> + if (ret < 0) {
>>> + return ret;
>>> + }
>>> + fragment_timeline_node = xmlNextElementSibling(
>> fragment_timeline_node);
>>> + }
>>> + }
>>> + } else if (representation_baseurl_node &&
>> !representation_segmentlist_node) {
>>> + seg = av_mallocz(sizeof(struct fragment));
>>> + if (!seg) {
>>> + ret = AVERROR(ENOMEM);
>>> + goto end;
>>> + }
>>> + seg->url = get_content_url(baseurl_nodes, 4, rep_id_val,
>> rep_bandwidth_val, NULL);
>>> + seg->size = -1;
>>> + dynarray_add(&rep->fragments, &rep->n_fragments, seg);
>>> + } else if (!representation_baseurl_node &&
>> representation_segmentlist_node) {
>>> + // TODO: https://www.brendanlong.com/
>> the-structure-of-an-mpeg-dash-mpd.html
>>> + // http://www-itec.uni-klu.ac.at/
>> dash/ddash/mpdGenerator.php?fragmentlength=15&type=full
>>> + xmlNodePtr fragmenturl_node = NULL;
>>> + duration_val = xmlGetProp(representation_segmentlist_node,
>> "duration");
>>> + timescale_val = xmlGetProp(representation_segmentlist_node,
>> "timescale");
>>> + if (duration_val) {
>>> + rep->fragment_duration = (int64_t) atoll((const char
>> *)duration_val);
>>> + xmlFree(duration_val);
>>> + }
>>> + if (timescale_val) {
>>> + rep->fragment_timescale = (int64_t) atoll((const char
>> *)timescale_val);
>>> + xmlFree(timescale_val);
>>> + }
>>> + fragmenturl_node = xmlFirstElementChild(
>> representation_segmentlist_node);
>>> + while (fragmenturl_node) {
>>> + ret = parse_manifest_segmenturlnode(s, rep,
>> fragmenturl_node, baseurl_nodes, rep_id_val, rep_bandwidth_val);
>>> + if (ret < 0) {
>>> + return ret;
>>> + }
>>> + fragmenturl_node = xmlNextElementSibling(
>> fragmenturl_node);
>>> + }
>>> + } else {
>>> + free_representation(rep);
>>> + rep = NULL;
>>> + av_log(s, AV_LOG_ERROR, "Unknown format of Representation
>> node id[%s] \n", (const char *)rep_id_val);
>>> + }
>>> +
>>> + if (rep) {
>>> + if (rep->fragment_duration > 0 && !rep->fragment_timescale)
>>> + rep->fragment_timescale = 1;
>>> + if (type == AVMEDIA_TYPE_VIDEO) {
>>> + rep->rep_idx = video_rep_idx;
>>> + c->cur_video = rep;
>>> + } else {
>>> + rep->rep_idx = audio_rep_idx;
>>> + c->cur_audio = rep;
>>> + }
>>> + }
>>> + }
>>> +
>>> + video_rep_idx += type == AVMEDIA_TYPE_VIDEO;
>>> + audio_rep_idx += type == AVMEDIA_TYPE_AUDIO;
>>> +
>>> +end:
>>> + if (rep_id_val)
>>> + xmlFree(rep_id_val);
>>> + if (rep_bandwidth_val)
>>> + xmlFree(rep_bandwidth_val);
>>> +
>>> + return ret;
>>> +}
>>> +
>>> +static int parse_manifest_adaptationset(AVFormatContext *s, const char
>> *url, xmlNodePtr adaptionset_node, xmlNodePtr mpd_baseurl_node, xmlNodePtr
>> period_baseurl_node)
>>> +{
>>> + int ret = 0;
>>> + xmlNodePtr fragment_template_node = NULL;
>>> + xmlNodePtr content_component_node = NULL;
>>> + xmlNodePtr adaptionset_baseurl_node = NULL;
>>> + xmlNodePtr node = NULL;
>>> +
>>> + node = xmlFirstElementChild(adaptionset_node);
>>> + while (node) {
>>> + if (!xmlStrcmp(node->name, (const xmlChar *)"SegmentTemplate"))
>> {
>>> + fragment_template_node = node;
>>> + } else if (!xmlStrcmp(node->name, (const xmlChar
>> *)"ContentComponent")) {
>>> + content_component_node = node;
>>> + } else if (!xmlStrcmp(node->name, (const xmlChar *)"BaseURL")) {
>>> + adaptionset_baseurl_node = node;
>>> + } else if (!xmlStrcmp(node->name, (const xmlChar
>> *)"Representation")) {
>>> + ret = parse_manifest_representation(s, url, node,
>>> + adaptionset_node,
>>> + mpd_baseurl_node,
>>> + period_baseurl_node,
>>> + fragment_template_node,
>>> + content_component_node,
>>> +
>> adaptionset_baseurl_node);
>>> + if (ret < 0) {
>>> + return ret;
>>> + }
>>> + }
>>> + node = xmlNextElementSibling(node);
>>> + }
>>> + return 0;
>>> +}
>>> +
>>> +
>>> +static int parse_manifest(AVFormatContext *s, const char *url,
>> AVIOContext *in)
>>> +{
>>> + DASHContext *c = s->priv_data;
>>> + int ret = 0;
>>> + int close_in = 0;
>>> + uint8_t *new_url = NULL;
>>> + int64_t filesize = 0;
>>> + char *buffer = NULL;
>>> + AVDictionary *opts = NULL;
>>> + xmlDoc *doc = NULL;
>>> + xmlNodePtr root_element = NULL;
>>> + xmlNodePtr node = NULL;
>>> + xmlNodePtr period_node = NULL;
>>> + xmlNodePtr mpd_baseurl_node = NULL;
>>> + xmlNodePtr period_baseurl_node = NULL;
>>> + xmlNodePtr adaptionset_node = NULL;
>>> + xmlAttrPtr attr = NULL;
>>> + xmlChar *val = NULL;
>>> + uint32_t perdiod_duration_sec = 0;
>>> + uint32_t perdiod_start_sec = 0;
>>> + int32_t audio_rep_idx = 0;
>>> + int32_t video_rep_idx = 0;
>>> +
>>> + if (!in) {
>>> + close_in = 1;
>>> + /* This is XML manifest there is no need to set range header */
>>> + av_dict_set(&opts, "seekable", "0", 0);
>>> + // broker prior HTTP options that should be consistent across
>> requests
>>> + av_dict_set(&opts, "user-agent", c->user_agent, 0);
>>> + av_dict_set(&opts, "cookies", c->cookies, 0);
>>> + av_dict_set(&opts, "headers", c->headers, 0);
>>> +
>>> + ret = avio_open2(&in, url, AVIO_FLAG_READ,
>> c->interrupt_callback, &opts);
>>> + av_dict_free(&opts);
>>> + if (ret < 0)
>>> + return ret;
>>> + }
>>> +
>>> + if (av_opt_get(in, "location", AV_OPT_SEARCH_CHILDREN, &new_url) >=
>> 0) {
>>> + c->base_url = av_strdup(new_url);
>>> + } else {
>>> + c->base_url = av_strdup(url);
>>> + }
>>> +
>>> + filesize = avio_size(in);
>>> + if (filesize <= 0){
>>
>> Space between ) and { (this occurs a few times).
>>
>>> + filesize = 8 * 1024;
>>> + }
>>> +
>>> + buffer = av_mallocz(filesize);
>>> + if (!buffer) {
>>> + return AVERROR(ENOMEM);
>>> + }
>>> +
>>> + filesize = avio_read(in, buffer, filesize);
>>> + if (filesize > 0) {
>>> + LIBXML_TEST_VERSION
>>> +
>>> + doc = xmlReadMemory(buffer, filesize, c->base_url, NULL, 0);
>>> + root_element = xmlDocGetRootElement(doc);
>>> + node = root_element;
>>> +
>>> + if (!node) {
>>> + ret = AVERROR_INVALIDDATA;
>>> + av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing
>> root node\n", url);
>>> + goto cleanup;
>>> + }
>>> +
>>> + if (node->type != XML_ELEMENT_NODE ||
>>> + xmlStrcmp(node->name, (const xmlChar *)"MPD")) {
>>> + ret = AVERROR_INVALIDDATA;
>>> + av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - wrong root
>> node name[%s] type[%d]\n", url, node->name, (int)node->type);
>>> + goto cleanup;
>>> + }
>>> +
>>> + val = xmlGetProp(node, "type");
>>> + if (!val) {
>>> + av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing
>> type attrib\n", url);
>>> + ret = AVERROR_INVALIDDATA;
>>> + goto cleanup;
>>> + }
>>> + if (!xmlStrcmp(val, (const xmlChar *)"dynamic"))
>>> + c->is_live = 1;
>>> + xmlFree(val);
>>> +
>>> + attr = node->properties;
>>> + while (attr) {
>>> + val = xmlGetProp(node, attr->name);
>>> +
>>> + if (!xmlStrcmp(attr->name, (const xmlChar
>> *)"availabilityStartTime")) {
>>> + c->availability_start_time_sec = GetUTCDateTimeInSec(s,
>> (const char *)val);
>>> + } else if (!xmlStrcmp(attr->name, (const xmlChar
>> *)"publishTime")) {
>>> + c->publish_time_sec = GetUTCDateTimeInSec(s, (const
>> char *)val);
>>> + } else if (!xmlStrcmp(attr->name, (const xmlChar
>> *)"minimumUpdatePeriod")) {
>>> + c->minimum_update_period_sec = GetDurationInSec(s,
>> (const char *)val);
>>> + } else if (!xmlStrcmp(attr->name, (const xmlChar
>> *)"timeShiftBufferDepth")) {
>>> + c->time_shift_buffer_depth_sec = GetDurationInSec(s,
>> (const char *)val);
>>> + } else if (!xmlStrcmp(attr->name, (const xmlChar
>> *)"minBufferTime")) {
>>> + c->min_buffer_time_sec = GetDurationInSec(s, (const
>> char *)val);
>>> + } else if (!xmlStrcmp(attr->name, (const xmlChar
>> *)"suggestedPresentationDelay")) {
>>> + c->suggested_presentation_delay_sec =
>> GetDurationInSec(s, (const char *)val);
>>> + } else if (!xmlStrcmp(attr->name, (const xmlChar
>> *)"mediaPresentationDuration")) {
>>> + c->media_presentation_duration_sec =
>> GetDurationInSec(s, (const char *)val);
>>> + }
>>> + attr = attr->next;
>>> + xmlFree(val);
>>> + }
>>> +
>>> + mpd_baseurl_node = findChildNodeByName(node, "BaseURL");
>>> +
>>> + // at now we can handle only one period, with the longest
>> duration
>>> + node = xmlFirstElementChild(node);
>>> + while (node) {
>>> + if (!xmlStrcmp(node->name, (const xmlChar *)"Period")) {
>>> + perdiod_duration_sec = 0;
>>> + perdiod_start_sec = 0;
>>> + attr = node->properties;
>>> + while (attr) {
>>> + val = xmlGetProp(node, attr->name);
>>> + if (!xmlStrcmp(attr->name, (const xmlChar
>> *)"duration")) {
>>> + perdiod_duration_sec = GetDurationInSec(s,
>> (const char *)val);
>>> + } else if (!xmlStrcmp(attr->name, (const xmlChar
>> *)"start")) {
>>> + perdiod_start_sec = GetDurationInSec(s, (const
>> char *)val);
>>> + }
>>> + attr = attr->next;
>>> + xmlFree(val);
>>> + }
>>> + if ((perdiod_duration_sec) >= (c->period_duration_sec))
>> {
>>> + period_node = node;
>>> + c->period_duration_sec = perdiod_duration_sec;
>>> + c->period_start_sec = perdiod_start_sec;
>>> + if (c->period_start_sec > 0)
>>> + c->media_presentation_duration_sec =
>> c->period_duration_sec;
>>> + }
>>> + }
>>> + node = xmlNextElementSibling(node);
>>> + }
>>> + if (!period_node) {
>>> + av_log(s, AV_LOG_ERROR, "Unable to parse '%s' - missing
>> Period node\n", url);
>>> + ret = AVERROR_INVALIDDATA;
>>> + goto cleanup;
>>> + }
>>> + // explore AdaptationSet
>>> + adaptionset_node = xmlFirstElementChild(period_node);
>>> + while (adaptionset_node) {
>>> + if (!xmlStrcmp(adaptionset_node->name, (const xmlChar
>> *)"BaseURL")) {
>>> + period_baseurl_node = adaptionset_node;
>>> + } else if (!xmlStrcmp(adaptionset_node->name, (const
>> xmlChar *)"AdaptationSet")) {
>>> + parse_manifest_adaptationset(s, url, adaptionset_node,
>> mpd_baseurl_node, period_baseurl_node);
>>> + }
>>> + adaptionset_node = xmlNextElementSibling(adaptionset_node);
>>> + }
>>> + if (c->cur_video) {
>>> + c->cur_video->rep_count = video_rep_idx;
>>> + c->cur_video->fix_multiple_stsd_order = 1;
>>> + av_log(s, AV_LOG_VERBOSE, "rep_idx[%d]\n",
>> (int)c->cur_video->rep_idx);
>>> + av_log(s, AV_LOG_VERBOSE, "rep_count[%d]\n",
>> (int)video_rep_idx);
>>> + }
>>> + if (c->cur_audio) {
>>> + c->cur_audio->rep_count = audio_rep_idx;
>>> + }
>>> +
>>> +cleanup:
>>> + /*free the document */
>>> + xmlFreeDoc(doc);
>>> + xmlCleanupParser();
>>> + } else {
>>> + av_log(s, AV_LOG_ERROR, "Unable to read to offset '%s'\n", url);
>>> + ret = AVERROR_INVALIDDATA;
>>> + }
>>> +
>>> + av_free(new_url);
>>> + av_free(buffer);
>>> + if (close_in) {
>>> + avio_close(in);
>>> + }
>>> + return ret;
>>> +}
>>> +
>>> +static int64_t calc_cur_seg_no(AVFormatContext *s, struct
>> representation *pls)
>>> +{
>>> + DASHContext *c = pls->parent->priv_data;
>>> + int64_t num = 0;
>>> +
>>> + if (c->is_live) {
>>> + if (!pls->fragment_duration) {
>>> + av_log(s, AV_LOG_ERROR, "Get not get fragment duration
>> value in live mode\n");
>>> + return pls->first_seq_no;
>>> + }
>>> + num = pls->first_seq_no + (((GetCurrentTimeInSec() -
>> c->availability_start_time_sec) - c->presentation_delay_sec) *
>> pls->fragment_timescale) / pls->fragment_duration;
>>> + } else {
>>> + num = pls->first_seq_no;
>>> + }
>>> + return num;
>>> +}
>>> +
>>> +static int64_t calc_min_seg_no(AVFormatContext *s, struct
>> representation *pls)
>>> +{
>>> + DASHContext *c = pls->parent->priv_data;
>>> + int64_t num = 0;
>>> +
>>> + if (c->is_live) {
>>> + if (!pls->fragment_duration) {
>>> + av_log(s, AV_LOG_ERROR, "Get not get fragment duration
>> value in live mode\n");
>>> + return pls->first_seq_no;
>>> + }
>>> + num = pls->first_seq_no + (((GetCurrentTimeInSec() -
>> c->availability_start_time_sec) - c->time_shift_buffer_depth_sec) *
>> pls->fragment_timescale) / pls->fragment_duration;
>>> + } else {
>>> + num = pls->first_seq_no;
>>> + }
>>> + return num;
>>> +}
>>> +
>>> +static int64_t calc_max_seg_no(AVFormatContext *s, struct
>> representation *pls)
>>> +{
>>> + DASHContext *c = pls->parent->priv_data;
>>> + int64_t num = 0;
>>> + int64_t i = 0;
>>> +
>>> + if (c->is_live) {
>>> + if (!pls->fragment_duration) {
>>> + av_log(s, AV_LOG_ERROR, "Get not get fragment duration
>> value in live mode\n");
>>> + return pls->first_seq_no;
>>> + }
>>> + num = pls->first_seq_no + (((GetCurrentTimeInSec() -
>> c->availability_start_time_sec)) * pls->fragment_timescale) /
>> pls->fragment_duration;
>>> + } else {
>>> + if (pls->n_fragments) {
>>> + num = pls->first_seq_no + pls->n_fragments - 1;
>>> + } else if (pls->n_timelines) {
>>> + num = pls->first_seq_no + pls->n_timelines - 1;
>>> + for (i = 0; i < pls->n_timelines; ++i) {
>>> + num += pls->timelines[i]->r;
>>> + }
>>> + } else {
>>> + num = pls->first_seq_no + (c->media_presentation_duration_sec
>> * pls->fragment_timescale) / pls->fragment_duration;
>>> + }
>>> + }
>>> +
>>> + return num;
>>> +}
>>> +
>>> +static int64_t get_fragment_start_time(struct representation *pls,
>> int64_t cur_seq_no)
>>> +{
>>> + int64_t i = 0;
>>> + int64_t j = 0;
>>> + int64_t num = 0;
>>> + int64_t startTime = 0;
>>> +
>>> + if (pls->n_timelines) {
>>> + for (i = 0; i < pls->n_timelines; ++i) {
>>> + if (pls->timelines[i]->t > 0) {
>>> + startTime = pls->timelines[i]->t;
>>> + }
>>> + if (num == cur_seq_no)
>>> + goto finish;
>>> + startTime += pls->timelines[i]->d;
>>> + for (j = 0; j < pls->timelines[i]->r; ++j) {
>>> + num++;
>>> + if (num == cur_seq_no)
>>> + goto finish;
>>> + startTime += pls->timelines[i]->d;
>>> + }
>>> + num++;
>>> + }
>>> + }
>>> +
>>> +finish:
>>> + return startTime;
>>> +}
>>> +
>>> +static struct fragment *get_current_fragment(struct representation *pls)
>>> +{
>>> + int64_t tmp_val = 0;
>>> + int64_t min_seq_no = 0;
>>> + int64_t max_seq_no = 0;
>>> + char buffer[1024];
>>> + char *tmp_str = NULL;
>>> + struct fragment *seg = NULL;
>>> + struct fragment *seg_ptr = NULL;
>>> + DASHContext *c = pls->parent->priv_data;
>>> +
>>> + if (pls->n_fragments > 0) {
>>> + if (pls->cur_seq_no < pls->n_fragments) {
>>> + seg_ptr = pls->fragments[pls->cur_seq_no];
>>> + seg = av_mallocz(sizeof(struct fragment));
>>> + if (!seg) {
>>> + return NULL;
>>> + }
>>> + seg->url = av_strdup(seg_ptr->url);
>>> + if (!seg->url) {
>>> + av_free(seg);
>>> + return NULL;
>>> + }
>>> + seg->size = seg_ptr->size;
>>> + seg->url_offset = seg_ptr->url_offset;
>>> + return seg;
>>> + }
>>> + }
>>> + if (c->is_live) {
>>> + while (1) {
>>> + min_seq_no = calc_min_seg_no(pls->parent, pls);
>>> + max_seq_no = calc_max_seg_no(pls->parent, pls);
>>> +
>>> + if (pls->cur_seq_no <= min_seq_no) {
>>> + av_log(pls->parent, AV_LOG_VERBOSE, "old fragment:
>> cur[%"PRId64"] min[%"PRId64"] max[%"PRId64"], playlist %d\n",
>>> + (int64_t)pls->cur_seq_no, min_seq_no,
>> max_seq_no, (int)pls->rep_idx);
>>> + pls->cur_seq_no = calc_cur_seg_no(pls->parent, pls);
>>> + } else if (pls->cur_seq_no > max_seq_no) {
>>> + av_log(pls->parent, AV_LOG_VERBOSE, "new fragment:
>> min[%"PRId64"] max[%"PRId64"], playlist %d\n",
>>> + min_seq_no, max_seq_no, (int)pls->rep_idx);
>>> + av_usleep(1000);
>>> + continue;
>>> + }
>>> + break;
>>> + }
>>> + seg = av_mallocz(sizeof(struct fragment));
>>> + if (!seg) {
>>> + return NULL;
>>> + }
>>> + } else if (pls->cur_seq_no <= pls->last_seq_no) {
>>> + seg = av_mallocz(sizeof(struct fragment));
>>> + if (!seg) {
>>> + return NULL;
>>> + }
>>> + }
>>> + if (seg) {
>>> + if (pls->tmp_url_type != TMP_URL_TYPE_UNSPECIFIED) {
>>> + tmp_val = pls->tmp_url_type == TMP_URL_TYPE_NUMBER ?
>> pls->cur_seq_no : get_fragment_start_time(pls, pls->cur_seq_no);
>>> + if (av_get_frame_filename(buffer, sizeof(buffer),
>> pls->url_template, (int64_t)tmp_val) < 0) {
>>
>> It's not a security issue like with printf functions, but you shouldn't
>> use av_get_frame_filename() with arbitrary format-string input either, as
>> it will fail if the input already contained a '%' character. I also don't
>> understand how this is supposed to work, since your source string
>> (url_template) shouldn't contain a "%d"?
>>
>>> + av_log(pls->parent, AV_LOG_ERROR, "Invalid segment
>> filename template %s\n", pls->url_template);
>>> + return NULL;
>>> + }
>>> +
>>> + if (pls->tmp_url_type == TMP_URL_TYPE_NUMBER) {
>>> + tmp_str = replace_template_str(buffer, "$Number$");
>>> + } else if (pls->tmp_url_type == TMP_URL_TYPE_TIME){
>>> + tmp_str = replace_template_str(buffer, "$Time$");
>>> + } else {
>>> + av_log(pls->parent, AV_LOG_ERROR, "Invalid tmp_url_type
>> [%d]\n", pls->tmp_url_type);
>>
>> Since this shouldn't be possible, an av_assert0 is applicable; no need to
>> log the value.
>>
>>> + return NULL;
>>> + }
>>> +
>>> + seg->url = av_strdup(tmp_str);
>>> + if (!seg->url) {
>>> + av_free(tmp_str);
>>> + return NULL;
>>> + }
>>> + } else {
>>> + av_log(pls->parent, AV_LOG_ERROR, "Unable to unable to
>> resolve template url '%s'\n", pls->url_template);
>>> + seg->url = av_strdup(pls->url_template);
>>> + if (!seg->url) {
>>> + return NULL;
>>> + }
>>> + }
>>> + seg->size = -1;
>>> + }
>>> +
>>> + av_free(tmp_str);
>>> + return seg;
>>> +}
>>> +
>>> +enum ReadFromURLMode {
>>> + READ_NORMAL,
>>> + READ_COMPLETE,
>>> +};
>>> +
>>> +static int read_from_url(struct representation *pls, struct fragment
>> *seg,
>>> + uint8_t *buf, int buf_size,
>>> + enum ReadFromURLMode mode)
>>> +{
>>> + int ret;
>>> +
>>> + /* limit read if the fragment was only a part of a file */
>>> + if (seg->size >= 0)
>>> + buf_size = FFMIN(buf_size, pls->cur_seg_size -
>> pls->cur_seg_offset);
>>> +
>>> + if (mode == READ_COMPLETE) {
>>> + ret = avio_read(pls->input, buf, buf_size);
>>> + if (ret < buf_size) {
>>> + av_log(pls->parent, AV_LOG_WARNING, "Could not read
>> complete fragment.\n");
>>> + }
>>> + } else {
>>> + ret = avio_read(pls->input, buf, buf_size);
>>> + }
>>> + if (ret > 0)
>>> + pls->cur_seg_offset += ret;
>>> +
>>> + return ret;
>>> +}
>>> +
>>> +static int open_input(DASHContext *c, struct representation *pls,
>> struct fragment *seg)
>>> +{
>>> + AVDictionary *opts = NULL;
>>> + char url[MAX_URL_SIZE];
>>> + int ret;
>>> +
>>> + // broker prior HTTP options that should be consistent across
>> requests
>>> + av_dict_set(&opts, "user-agent", c->user_agent, 0);
>>> + av_dict_set(&opts, "cookies", c->cookies, 0);
>>> + av_dict_set(&opts, "headers", c->headers, 0);
>>> + if (c->is_live) {
>>> + av_dict_set(&opts, "seekable", "0", 0);
>>> + }
>>> +
>>> + if (seg->size >= 0) {
>>> + /* try to restrict the HTTP request to the part we want
>>> + * (if this is in fact a HTTP request) */
>>> + av_dict_set_int(&opts, "offset", seg->url_offset, 0);
>>> + av_dict_set_int(&opts, "end_offset", seg->url_offset +
>> seg->size, 0);
>>> + }
>>> +
>>> + ff_make_absolute_url(url, MAX_URL_SIZE, c->base_url, seg->url);
>>> + av_log(pls->parent, AV_LOG_VERBOSE, "DASH request for url '%s',
>> offset %"PRId64", playlist %d\n",
>>> + url, seg->url_offset, pls->rep_idx);
>>> + ret = open_url(pls->parent, &pls->input, url, c->avio_opts, opts,
>> NULL);
>>> + if (ret < 0) {
>>> + goto cleanup;
>>> + }
>>> +
>>> + /* Seek to the requested position. If this was a HTTP request, the
>> offset
>>> + * should already be where want it to, but this allows e.g. local
>> testing
>>> + * without a HTTP server. */
>>> + if (!ret && seg->url_offset) {
>>> + int64_t seekret = avio_seek(pls->input, seg->url_offset,
>> SEEK_SET);
>>> + if (seekret < 0) {
>>> + av_log(pls->parent, AV_LOG_ERROR, "Unable to seek to offset
>> %"PRId64" of DASH fragment '%s'\n", seg->url_offset, seg->url);
>>> + ret = (int) seekret;
>>> + ff_format_io_close(pls->parent, &pls->input);
>>> + }
>>> + }
>>> +
>>> +cleanup:
>>> + av_dict_free(&opts);
>>> + pls->cur_seg_offset = 0;
>>> + pls->cur_seg_size = seg->size;
>>> + return ret;
>>> +}
>>> +
>>> +static int update_init_section(struct representation *pls)
>>> +{
>>> + static const int max_init_section_size = 1024*1024;
>>> + DASHContext *c = pls->parent->priv_data;
>>> + int64_t sec_size = 0;
>>> + int64_t urlsize = 0;
>>> + int ret = 0;
>>> +
>>> + /* read init section only once per representation */
>>> + if (!pls->init_section || pls->init_sec_buf) {
>>> + return 0;
>>> + }
>>> +
>>> + ret = open_input(c, pls, pls->init_section);
>>> + if (ret < 0) {
>>> + av_log(pls->parent, AV_LOG_WARNING, "Failed to open an
>> initialization section in playlist %d\n", pls->rep_idx);
>>> + return ret;
>>> + }
>>> +
>>> + if (pls->init_section->size >= 0) {
>>> + sec_size = pls->init_section->size;
>>> + } else if ((urlsize = avio_size(pls->input)) >= 0) {
>>> + sec_size = urlsize;
>>> + } else {
>>> + sec_size = max_init_section_size;
>>> + }
>>> + av_log(pls->parent, AV_LOG_DEBUG, "Downloading an initialization
>> section of size %"PRId64"\n", sec_size);
>>> + sec_size = FFMIN(sec_size, max_init_section_size);
>>> + av_fast_malloc(&pls->init_sec_buf, &pls->init_sec_buf_size,
>> sec_size);
>>> + ret = read_from_url(pls, pls->init_section, pls->init_sec_buf,
>> pls->init_sec_buf_size, READ_COMPLETE);
>>> + ff_format_io_close(pls->parent, &pls->input);
>>> + if (ret < 0)
>>> + return ret;
>>> +
>>> + if (pls->fix_multiple_stsd_order && pls->rep_idx > 0) {
>>> + uint8_t **stsd_entries = NULL;
>>> + int *stsd_entries_size = NULL;
>>> + int i = 4;
>>> +
>>> + while (i <= (ret - 4)) {
>>> + // find start stsd atom
>>> + if (!memcmp(pls->init_sec_buf + i, "stsd", 4)) {
>>> + /* 1B version
>>> + * 3B flags
>>> + * 4B num of entries */
>>> + int stsd_first_offset = i + 8;
>>> + int stsd_offset = 0;
>>> + int j = 0;
>>> + uint32_t stsd_count = AV_RB32(pls->init_sec_buf +
>> stsd_first_offset);
>>> + stsd_first_offset += 4;
>>> + if (stsd_count != pls->rep_count) {
>>> + i++;
>>> + continue;
>>> + }
>>> + // find all stsd entries
>>> + stsd_entries = av_mallocz_array(stsd_count,
>> sizeof(*stsd_entries));
>>> + stsd_entries_size = av_mallocz_array(stsd_count,
>> sizeof(*stsd_entries_size));
>>> + for (j = 0; j < stsd_count; ++j) {
>>> + /* 4B - size
>>> + * 4B - format */
>>> + stsd_entries_size[j] = AV_RB32(pls->init_sec_buf +
>> stsd_first_offset + stsd_offset);
>>> + stsd_entries[j] = av_malloc(stsd_entries_size[j]);
>>> + memcpy(stsd_entries[j], pls->init_sec_buf +
>> stsd_first_offset + stsd_offset, stsd_entries_size[j]);
>>> + stsd_offset += stsd_entries_size[j];
>>> + }
>>> + // reorder stsd entries
>>> + // as first put stsd entry for current representation
>>> + j = pls->rep_idx;
>>> + stsd_offset = stsd_first_offset;
>>> + memcpy(pls->init_sec_buf + stsd_offset,
>> stsd_entries[j], stsd_entries_size[j]);
>>> + stsd_offset += stsd_entries_size[j];
>>> + for (j = 0; j < stsd_count; ++j) {
>>> + if (j != pls->rep_idx) {
>>> + memcpy(pls->init_sec_buf + stsd_offset,
>> stsd_entries[j], stsd_entries_size[j]);
>>> + stsd_offset += stsd_entries_size[j];
>>> + }
>>> + av_free(stsd_entries[j]);
>>> + }
>>> + av_freep(&stsd_entries);
>>> + av_freep(&stsd_entries_size);
>>> + break;
>>> + }
>>> + i++;
>>> + }
>>> + }
>>> +
>>> + av_log(pls->parent, AV_LOG_TRACE, "pls[%p] init section
>> size[%d]\n", pls, (int)ret);
>>> + pls->init_sec_data_len = ret;
>>> + pls->init_sec_buf_read_offset = 0;
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +static int64_t seek_data(void *opaque, int64_t offset, int whence)
>>> +{
>>> + struct representation *v = opaque;
>>> + if (v->n_fragments && !v->init_sec_data_len) {
>>> + return avio_seek(v->input, offset, whence);
>>> + }
>>> +
>>> + return AVERROR(ENOSYS);
>>> +}
>>> +
>>> +static int read_data(void *opaque, uint8_t *buf, int buf_size)
>>> +{
>>> + int ret = 0;
>>> + struct representation *v = opaque;
>>> + DASHContext *c = v->parent->priv_data;
>>> +
>>> +restart:
>>> + if (!v->input) {
>>> + free_fragment(&v->cur_seg);
>>> + v->cur_seg = get_current_fragment(v);
>>> + if (!v->cur_seg) {
>>> + ret = AVERROR_EOF;
>>> + goto end;
>>> + }
>>> +
>>> + /* load/update Media Initialization Section, if any */
>>> + ret = update_init_section(v);
>>> + if (ret)
>>> + goto end;
>>> +
>>> + ret = open_input(c, v, v->cur_seg);
>>> + if (ret < 0) {
>>> + if (ff_check_interrupt(c->interrupt_callback)) {
>>> + goto end;
>>> + ret = AVERROR_EXIT;
>>> + }
>>> + av_log(v->parent, AV_LOG_WARNING, "Failed to open fragment
>> of playlist %d\n", v->rep_idx);
>>> + v->cur_seq_no++;
>>> + goto restart;
>>> + }
>>> + }
>>> +
>>> + if (v->init_sec_buf_read_offset < v->init_sec_data_len) {
>>> + /* Push init section out first before first actual fragment */
>>> + int copy_size = FFMIN(v->init_sec_data_len -
>> v->init_sec_buf_read_offset, buf_size);
>>> + memcpy(buf, v->init_sec_buf, copy_size);
>>> + v->init_sec_buf_read_offset += copy_size;
>>> + ret = copy_size;
>>> + goto end;
>>> + }
>>> +
>>> + /* check the v->cur_seg, if it is null, get current and double
>> check if the new v->cur_seg*/
>>> + if (!v->cur_seg) {
>>> + v->cur_seg = get_current_fragment(v);
>>> + }
>>> + if (!v->cur_seg) {
>>> + ret = AVERROR_EOF;
>>> + goto end;
>>> + }
>>> + ret = read_from_url(v, v->cur_seg, buf, buf_size, READ_NORMAL);
>>> + if (ret > 0)
>>> + goto end;
>>> + ff_format_io_close(v->parent, &v->input);
>>> + v->cur_seq_no++;
>>> + goto restart;
>>> +
>>> +end:
>>> + return ret;
>>> +}
>>> +
>>> +static int save_avio_options(AVFormatContext *s)
>>> +{
>>> + DASHContext *c = s->priv_data;
>>> + const char *opts[] = { "headers", "user_agent", "user-agent",
>> "cookies", NULL }, **opt = opts;
>>> + uint8_t *buf = NULL;
>>> + int ret = 0;
>>> +
>>> + while (*opt) {
>>> + if (av_opt_get(s->pb, *opt, AV_OPT_SEARCH_CHILDREN, &buf) >= 0)
>> {
>>> + if (buf) {
>>> + ret = av_dict_set(&c->avio_opts, *opt, buf,
>> AV_DICT_DONT_STRDUP_VAL);
>>> + if (ret < 0)
>>> + return ret;
>>> + }
>>> + }
>>> + opt++;
>>> + }
>>> +
>>> + return ret;
>>> +}
>>> +
>>> +static int nested_io_open(AVFormatContext *s, AVIOContext **pb, const
>> char *url,
>>> + int flags, AVDictionary **opts)
>>> +{
>>> + av_log(s, AV_LOG_ERROR,
>>> + "A HDS playlist item '%s' referred to an external file '%s'.
>> "
>>> + "Opening this file was forbidden for security reasons\n",
>>> + s->filename, url);
>>> + return AVERROR(EPERM);
>>> +}
>>> +
>>> +static int reopen_demux_for_component(AVFormatContext *s, struct
>> representation *pls)
>>> +{
>>> + DASHContext *c = s->priv_data;
>>> + AVInputFormat *in_fmt = NULL;
>>> + AVDictionary *in_fmt_opts = NULL;
>>> + uint8_t *avio_ctx_buffer = NULL;
>>> + int ret = 0;
>>> +
>>> + if (pls->ctx) {
>>> + /* note: the internal buffer could have changed, and be !=
>> avio_ctx_buffer */
>>> + av_freep(&pls->pb.buffer);
>>> + memset(&pls->pb, 0x00, sizeof(AVIOContext));
>>> + pls->ctx->pb = NULL;
>>> + avformat_close_input(&pls->ctx);
>>> + pls->ctx = NULL;
>>> + }
>>> + if (!(pls->ctx = avformat_alloc_context())) {
>>> + ret = AVERROR(ENOMEM);
>>> + goto fail;
>>> + }
>>> +
>>> + avio_ctx_buffer = av_malloc(INITIAL_BUFFER_SIZE);
>>> + if (!avio_ctx_buffer ){
>>> + ret = AVERROR(ENOMEM);
>>> + avformat_free_context(pls->ctx);
>>> + pls->ctx = NULL;
>>> + goto fail;
>>> + }
>>> + if (c->is_live) {
>>> + ffio_init_context(&pls->pb, avio_ctx_buffer ,
>> INITIAL_BUFFER_SIZE, 0, pls, read_data, NULL, NULL);
>>> + } else {
>>> + ffio_init_context(&pls->pb, avio_ctx_buffer ,
>> INITIAL_BUFFER_SIZE, 0, pls, read_data, NULL, seek_data);
>>> + }
>>> + pls->pb.seekable = 0;
>>> +
>>> + if ((ret = ff_copy_whiteblacklists(pls->ctx, s)) < 0)
>>> + goto fail;
>>> +
>>> + pls->ctx->flags = AVFMT_FLAG_CUSTOM_IO;
>>> + pls->ctx->probesize = 1024 * 4;
>>> + pls->ctx->max_analyze_duration = 4 * AV_TIME_BASE;
>>> + ret = av_probe_input_buffer(&pls->pb, &in_fmt, "", NULL, 0, 0);
>>> + if (ret < 0) {
>>> + av_log(s, AV_LOG_ERROR, "Error when loading first fragment,
>> playlist %d\n", (int)pls->rep_idx);
>>> + avformat_free_context(pls->ctx);
>>> + pls->ctx = NULL;
>>> + goto fail;
>>> + }
>>> +
>>> + pls->ctx->pb = &pls->pb;
>>> + pls->ctx->io_open = nested_io_open;
>>> +
>>> + // provide additional information from mpd if available
>>> + ret = avformat_open_input(&pls->ctx, "", in_fmt, &in_fmt_opts);
>> //pls->init_section->url
>>> + av_dict_free(&in_fmt_opts);
>>> + if (ret < 0)
>>> + goto fail;
>>> + if (pls->n_fragments) {
>>> + ret = avformat_find_stream_info(pls->ctx, NULL);
>>> + if (ret < 0)
>>> + goto fail;
>>> + }
>>> +
>>> +fail:
>>> + return ret;
>>> +}
>>> +
>>> +static int open_demux_for_component(AVFormatContext *s, struct
>> representation *pls)
>>> +{
>>> + int ret = 0;
>>> + int i;
>>> +
>>> + pls->parent = s;
>>> + pls->cur_seq_no = calc_cur_seg_no(s, pls);
>>> + pls->last_seq_no = calc_max_seg_no(s, pls);
>>> +
>>> + ret = reopen_demux_for_component(s, pls);
>>> + if (ret < 0) {
>>> + goto fail;
>>> + }
>>> + for (i = 0; i < pls->ctx->nb_streams; i++) {
>>> + AVStream *st = avformat_new_stream(s, NULL);
>>> + AVStream *ist = pls->ctx->streams[i];
>>> + if (!st) {
>>> + ret = AVERROR(ENOMEM);
>>> + goto fail;
>>> + }
>>> + st->id = i;
>>> + avcodec_parameters_copy(st->codecpar, pls->ctx->streams[i]->
>> codecpar);
>>> + avpriv_set_pts_info(st, ist->pts_wrap_bits, ist->time_base.num,
>> ist->time_base.den);
>>> + }
>>> +
>>> + return 0;
>>> +fail:
>>> + return ret;
>>> +}
>>> +
>>> +static int dash_read_header(AVFormatContext *s)
>>> +{
>>> + void *u = (s->flags & AVFMT_FLAG_CUSTOM_IO) ? NULL : s->pb;
>>> + DASHContext *c = s->priv_data;
>>> + int ret = 0;
>>> + int stream_index = 0;
>>> +
>>> + c->interrupt_callback = &s->interrupt_callback;
>>> + // if the URL context is good, read important options we must
>> broker later
>>> + if (u) {
>>> + update_options(&c->user_agent, "user-agent", u);
>>> + update_options(&c->cookies, "cookies", u);
>>> + update_options(&c->headers, "headers", u);
>>> + }
>>> +
>>> + if ((ret = parse_manifest(s, s->filename, s->pb)) < 0)
>>> + goto fail;
>>> +
>>> + if ((ret = save_avio_options(s)) < 0)
>>> + goto fail;
>>> +
>>> + /* If this isn't a live stream, fill the total duration of the
>>> + * stream. */
>>> + if (!c->is_live) {
>>> + s->duration = (int64_t) c->media_presentation_duration_sec *
>> AV_TIME_BASE;
>>> + }
>>> +
>>> + /* Open the demuxer for curent video and current audio components
>> if available */
>>> + if (!ret && c->cur_video) {
>>> + ret = open_demux_for_component(s, c->cur_video);
>>> + if (!ret) {
>>> + c->cur_video->stream_index = stream_index;
>>> + ++stream_index;
>>> + } else {
>>> + free_representation(c->cur_video);
>>> + c->cur_video = NULL;
>>> + }
>>> + }
>>> +
>>> + if (!ret && c->cur_audio) {
>>> + ret = open_demux_for_component(s, c->cur_audio);
>>> + if (!ret) {
>>> + c->cur_audio->stream_index = stream_index;
>>> + ++stream_index;
>>> + } else {
>>> + free_representation(c->cur_audio);
>>> + c->cur_audio = NULL;
>>> + }
>>> + }
>>> +
>>> + if (!stream_index) {
>>> + ret = AVERROR_INVALIDDATA;
>>> + goto fail;
>>> + }
>>> +
>>> + /* Create a program */
>>> + if (!ret) {
>>> + AVProgram *program;
>>> + program = av_new_program(s, 0);
>>> + if (!program) {
>>> + goto fail;
>>> + }
>>> +
>>> + if (c->cur_video) {
>>> + av_program_add_stream_index(s, 0,
>> c->cur_video->stream_index);
>>> + }
>>> +
>>> + if (c->cur_audio) {
>>> + av_program_add_stream_index(s, 0,
>> c->cur_audio->stream_index);
>>> + }
>>> + }
>>> +
>>> + return 0;
>>> +fail:
>>> + return ret;
>>> +}
>>> +
>>> +static int dash_read_packet(AVFormatContext *s, AVPacket *pkt)
>>> +{
>>> + DASHContext *c = s->priv_data;
>>> + int ret = 0;
>>> + struct representation *cur = NULL;
>>> +
>>> + if (!c->cur_audio && !c->cur_video) {
>>> + return AVERROR_INVALIDDATA;
>>> + }
>>> + if (c->cur_audio && !c->cur_video) {
>>> + cur = c->cur_audio;
>>> + } else if (!c->cur_audio && c->cur_video) {
>>> + cur = c->cur_video;
>>> + } else if (c->cur_video->cur_timestamp <
>> c->cur_audio->cur_timestamp) {
>>> + cur = c->cur_video;
>>> + } else {
>>> + cur = c->cur_audio;
>>> + }
>>> +
>>> + if (cur->ctx) {
>>> + ret = av_read_frame(cur->ctx, &cur->pkt);
>>> + if (ret < 0) {
>>> + av_packet_unref(&cur->pkt);
>>> + } else {
>>> + /* If we got a packet, return it */
>>> + *pkt = cur->pkt;
>>> + cur->cur_timestamp = av_rescale(pkt->pts,
>> (int64_t)cur->ctx->streams[0]->time_base.num * 90000,
>> cur->ctx->streams[0]->time_base.den);
>>> + pkt->stream_index = cur->stream_index;
>>> + reset_packet(&cur->pkt);
>>> + return 0;
>>> + }
>>> + }
>>> + return AVERROR_EOF;
>>> +}
>>> +
>>> +static int dash_close(AVFormatContext *s)
>>> +{
>>> + DASHContext *c = s->priv_data;
>>> +
>>> + if (c->cur_audio) {
>>> + free_representation(c->cur_audio);
>>> + }
>>> +
>>> + if (c->cur_video) {
>>> + free_representation(c->cur_video);
>>> + }
>>> +
>>> + av_freep(&c->cookies);
>>> + av_freep(&c->user_agent);
>>> + av_dict_free(&c->avio_opts);
>>> + av_freep(&c->base_url);
>>> + return 0;
>>> +}
>>> +
>>> +static int dash_seek(AVFormatContext *s, struct representation *pls,
>> int64_t seek_pos_msec, int flags)
>>> +{
>>> + int ret = 0;
>>> + int i = 0;
>>> + int j = 0;
>>> + int64_t duration = 0;
>>> +
>>> + av_log(pls->parent, AV_LOG_VERBOSE, "DASH seek pos[%"PRId64"ms],
>> playlist %d\n", seek_pos_msec, pls->rep_idx);
>>> +
>>> + // single fragment mode
>>> + if (pls->n_fragments) {
>>> + pls->cur_timestamp = 0;
>>> + pls->cur_seg_offset = 0;
>>> + ff_read_frame_flush(pls->ctx);
>>> + return av_seek_frame(pls->ctx, -1, seek_pos_msec*1000, flags);
>>> + }
>>> +
>>> + if (pls->input)
>>> + ff_format_io_close(pls->parent, &pls->input);
>>> +
>>> + // find the nearest fragment
>>> + if (pls->n_timelines > 0 && pls->fragment_timescale > 0) {
>>> + int64_t num = pls->first_seq_no;
>>> + av_log(pls->parent, AV_LOG_VERBOSE, "dash_seek with
>> SegmentTimeline start n_timelines[%d] last_seq_no[%"PRId64"], playlist
>> %d.\n",
>>> + (int)pls->n_timelines, (int64_t)pls->last_seq_no,
>> (int)pls->rep_idx);
>>> + for (i = 0; i < pls->n_timelines; i++) {
>>> + if (pls->timelines[i]->t > 0) {
>>> + duration = pls->timelines[i]->t;
>>> + }
>>> + duration += pls->timelines[i]->d;
>>> + if (seek_pos_msec < ((duration * 1000) /
>> pls->fragment_timescale)) {
>>> + goto set_seq_num;
>>> + }
>>> + for (j = 0; j < pls->timelines[i]->r; j++) {
>>> + duration += pls->timelines[i]->d;
>>> + num++;
>>> + if (seek_pos_msec < ((duration * 1000) /
>> pls->fragment_timescale)) {
>>> + goto set_seq_num;
>>> + }
>>> + }
>>> + num++;
>>> + }
>>> +
>>> +set_seq_num:
>>> + pls->cur_seq_no = num > pls->last_seq_no ? pls->last_seq_no :
>> num;
>>> + av_log(pls->parent, AV_LOG_VERBOSE, "dash_seek with
>> SegmentTimeline end cur_seq_no[%"PRId64"], playlist %d.\n",
>>> + (int64_t)pls->cur_seq_no, (int)pls->rep_idx);
>>> + } else if (pls->fragment_duration > 0) {
>>> + pls->cur_seq_no = pls->first_seq_no + ((seek_pos_msec *
>> pls->fragment_timescale) / pls->fragment_duration) / 1000;
>>> + } else {
>>> + av_log(pls->parent, AV_LOG_ERROR, "dash_seek missing
>> fragment_duration\n");
>>> + pls->cur_seq_no = pls->first_seq_no;
>>> + }
>>> + pls->cur_timestamp = 0;
>>> + pls->cur_seg_offset = 0;
>>> + pls->init_sec_buf_read_offset = 0;
>>> + ret = reopen_demux_for_component(s, pls);
>>> +
>>> + return ret;
>>> +}
>>> +
>>> +static int dash_read_seek(AVFormatContext *s, int stream_index, int64_t
>> timestamp, int flags)
>>> +{
>>> + int ret = 0;
>>> + DASHContext *c = s->priv_data;
>>> + int64_t seek_pos_msec = av_rescale_rnd(timestamp, 1000,
>>> + s->streams[stream_index]->
>> time_base.den,
>>> + flags & AVSEEK_FLAG_BACKWARD ?
>>> + AV_ROUND_DOWN : AV_ROUND_UP);
>>> + if ((flags & AVSEEK_FLAG_BYTE) || c->is_live)
>>> + return AVERROR(ENOSYS);
>>> + if (c->cur_audio) {
>>> + ret = dash_seek(s, c->cur_audio, seek_pos_msec, flags);
>>> + }
>>> + if (!ret && c->cur_video) {
>>> + ret = dash_seek(s, c->cur_video, seek_pos_msec, flags);
>>> + }
>>> + return ret;
>>> +}
>>> +
>>> +static int dash_probe(AVProbeData *p)
>>> +{
>>> + if (!av_stristr(p->buf, "<MPD"))
>>> + return 0;
>>> +
>>> + if (av_stristr(p->buf, "dash:profile:isoff-on-demand:2011") ||
>>> + av_stristr(p->buf, "dash:profile:isoff-live:2011") ||
>>> + av_stristr(p->buf, "dash:profile:isoff-live:2012") ||
>>> + av_stristr(p->buf, "dash:profile:isoff-main:2011")) {
>>> + return AVPROBE_SCORE_MAX;
>>> + }
>>> + if (av_stristr(p->buf, "dash:profile")) {
>>> + return AVPROBE_SCORE_MAX >> 1;
>>> + }
>>> +
>>> + return 0;
>>> +}
>>> +
>>> +#define OFFSET(x) offsetof(DASHContext, x)
>>> +#define FLAGS AV_OPT_FLAG_DECODING_PARAM
>>> +static const AVOption dash_options[] = {
>>> + {NULL}
>>> +};
>>> +
>>> +static const AVClass dash_class = {
>>> + .class_name = "dash",
>>> + .item_name = av_default_item_name,
>>> + .option = dash_options,
>>> + .version = LIBAVUTIL_VERSION_INT,
>>> +};
>>> +
>>> +AVInputFormat ff_dash_demuxer = {
>>> + .name = "dash",
>>> + .long_name = NULL_IF_CONFIG_SMALL("Dynamic Adaptive Streaming
>> over HTTP"),
>>> + .priv_class = &dash_class,
>>> + .priv_data_size = sizeof(DASHContext),
>>> + .read_probe = dash_probe,
>>> + .read_header = dash_read_header,
>>> + .read_packet = dash_read_packet,
>>> + .read_close = dash_close,
>>> + .read_seek = dash_read_seek,
>>> + .flags = AVFMT_NO_BYTE_SEEK,
>>> +};
>>> --
>>> 2.10.1 (Apple Git-78)
>>>
>>>
>>>
>>> _______________________________________________
>>> ffmpeg-devel mailing list
>>> ffmpeg-devel@ffmpeg.org
>>> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>>
>> _______________________________________________
>> ffmpeg-devel mailing list
>> ffmpeg-devel@ffmpeg.org <mailto:ffmpeg-devel@ffmpeg.org>
>> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>> <http://ffmpeg.org/mailman/listinfo/ffmpeg-devel>
>>
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel@ffmpeg.org <mailto:ffmpeg-devel@ffmpeg.org>
> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
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