These member will be used for get more correct information of the MPD Suggested-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com> Suggested-by: Nicolas George <geo...@nsup.org> Signed-off-by: Steven Liu <l...@chinaffmpeg.org> --- libavformat/dashdec.c | 244 ++++++++++++++++++++++++++++++++++++------ 1 file changed, 214 insertions(+), 30 deletions(-)
diff --git a/libavformat/dashdec.c b/libavformat/dashdec.c index 5bbe5d3985..b5bb8e674c 100644 --- a/libavformat/dashdec.c +++ b/libavformat/dashdec.c @@ -108,6 +108,7 @@ struct representation { int64_t cur_seg_offset; int64_t cur_seg_size; struct fragment *cur_seg; + char *lang; /* Currently active Media Initialization Section */ struct fragment *init_section; @@ -122,19 +123,15 @@ struct representation { typedef struct DASHContext { const AVClass *class; char *base_url; - char *adaptionset_contenttype_val; - char *adaptionset_par_val; - char *adaptionset_lang_val; - char *adaptionset_minbw_val; - char *adaptionset_maxbw_val; - char *adaptionset_minwidth_val; - char *adaptionset_maxwidth_val; - char *adaptionset_minheight_val; - char *adaptionset_maxheight_val; - char *adaptionset_minframerate_val; - char *adaptionset_maxframerate_val; - char *adaptionset_segmentalignment_val; - char *adaptionset_bitstreamswitching_val; + char *adaptionset_lang; + uint64_t adaptionset_minbw; + uint64_t adaptionset_maxbw; + uint64_t adaptionset_minwidth; + uint64_t adaptionset_maxwidth; + uint64_t adaptionset_minheight; + uint64_t adaptionset_maxheight; + AVRational adaptionset_minframerate; + AVRational adaptionset_maxframerate; int n_videos; struct representation **videos; @@ -169,6 +166,79 @@ typedef struct DASHContext { } DASHContext; +static int get_ratio_from_string(AVRational *dst, char *src) +{ + char *p = src; + char *end = NULL; + char *end_ptr = NULL; + int num, den; + + num = (int)strtol(p, &end_ptr, 10); + if (errno == ERANGE || end_ptr == src) { + return AVERROR_INVALIDDATA; + } + + if (end_ptr[0] == '\0') { + dst->den = 1; + dst->num = num; + return 0; + } + + if (end_ptr[0] != '/') + return AVERROR_INVALIDDATA; + p = end_ptr + 1; + den = (int)strtol(p, &end, 10); + if (errno == ERANGE || end == src) { + dst->den = 1; + return AVERROR_INVALIDDATA; + } + dst->den = den; + + return 0; +} + +static uint64_t dash_prop_get_int64(AVFormatContext *s, xmlNodePtr node, uint64_t *dst, const char *key) +{ + char *end_ptr = NULL; + char *val = xmlGetProp(node, key); + int ret = 0; + + if (val) { + ret = strtoull(val, &end_ptr, 10); + if (errno == ERANGE) { + av_log(s, AV_LOG_WARNING, "overflow/underflow when get value of %s\n", key); + xmlFree(val); + return AVERROR_INVALIDDATA; + } + if (end_ptr == val || end_ptr[0] != '\0') { + av_log(s, AV_LOG_ERROR, "The %s field value is " + "not a valid number: %s\n", key, val); + xmlFree(val); + return AVERROR_INVALIDDATA; + } + *dst = ret; + xmlFree(val); + } + return ret; +} + +static int dash_get_prop_ratio(AVFormatContext *s, xmlNodePtr node, AVRational *member, const char *key) +{ + char *val = xmlGetProp(node, key); + int ret = 0; + AVRational rate; + + if (val) { + ret = get_ratio_from_string(&rate, val); + if (ret < 0) + av_log(s, AV_LOG_WARNING, "Ignoring invalid %s frame rate '%s'\n", key, val); + xmlFree(val); + } + member->num = rate.num; + member->den = rate.den; + return ret; +} + static int ishttp(char *url) { const char *proto_name = avio_find_protocol_name(url); @@ -885,6 +955,15 @@ static int parse_manifest_representation(AVFormatContext *s, const char *url, ret = AVERROR(ENOMEM); goto end; } + if (c->adaptionset_lang) { + rep->lang = av_strdup(c->adaptionset_lang); + if (!rep->lang) { + av_log(s, AV_LOG_ERROR, "alloc language memory failure\n"); + av_freep(&rep); + ret = AVERROR(ENOMEM); + goto end; + } + } rep->parent = s; representation_segmenttemplate_node = find_child_node_by_name(representation_node, "SegmentTemplate"); representation_baseurl_node = find_child_node_by_name(representation_node, "BaseURL"); @@ -1070,15 +1149,61 @@ static int parse_manifest_representation(AVFormatContext *s, const char *url, } if (rep) { + uint64_t width = 0; + uint64_t height = 0; + if (rep->fragment_duration > 0 && !rep->fragment_timescale) rep->fragment_timescale = 1; rep->bandwidth = rep_bandwidth_val ? atoi(rep_bandwidth_val) : 0; + if (rep_bandwidth_val && (rep->bandwidth > c->adaptionset_maxbw || rep->bandwidth < c->adaptionset_minbw)) { + av_log(s, AV_LOG_WARNING, "The bandwidth of representation %s is incorrect, " + "will ignore this representation.\n", rep_id_val); + free_representation(rep); + goto end; + } + + ret = dash_prop_get_int64(s, representation_node, &width, "width"); + if (ret < 0) + av_log(s, AV_LOG_WARNING, "Ignoring the width of representation %s is incorrect.\n", rep_id_val); + if (width > c->adaptionset_maxwidth || width < c->adaptionset_minwidth) { + av_log(s, AV_LOG_WARNING, "Ignoring width of representation %s is incorrect, " + "will ignore this representation.\n", rep_id_val); + free_representation(rep); + goto end; + } + + ret = dash_prop_get_int64(s, representation_node, &height, "height"); + if (ret < 0) + av_log(s, AV_LOG_WARNING, "Ignoring the height of representation %s is incorrect.\n", rep_id_val); + if (height > c->adaptionset_maxheight || height < c->adaptionset_minheight) { + av_log(s, AV_LOG_WARNING, "Ignoring height of representation %s is incorrect, " + "will ignore this representation.\n", rep_id_val); + free_representation(rep); + goto end; + } + strncpy(rep->id, rep_id_val ? rep_id_val : "", sizeof(rep->id)); rep->framerate = av_make_q(0, 0); if (type == AVMEDIA_TYPE_VIDEO && rep_framerate_val) { - ret = av_parse_video_rate(&rep->framerate, rep_framerate_val); + ret = get_ratio_from_string(&rep->framerate, rep_framerate_val); if (ret < 0) - av_log(s, AV_LOG_VERBOSE, "Ignoring invalid frame rate '%s'\n", rep_framerate_val); + av_log(s, AV_LOG_WARNING, "Ignoring invalid frame rate '%s'\n", rep_framerate_val); + if (c->adaptionset_maxframerate.num > 0) { + if (av_cmp_q(rep->framerate, c->adaptionset_maxframerate) == 1) { + av_log(s, AV_LOG_WARNING, "Ignoring frame rate of representation %s incorrect, " + "will ignore this representation.\n", rep_id_val); + free_representation(rep); + goto end; + } + } + if (c->adaptionset_minframerate.num > 0) { + if (av_cmp_q(rep->framerate, c->adaptionset_minframerate) == -1) { + av_log(s, AV_LOG_WARNING, "Ignoring frame rate of representation %s incorrect, " + "will ignore this representation.\n", rep_id_val); + free_representation(rep); + goto end; + } + } } switch (type) { @@ -1106,6 +1231,7 @@ static int parse_manifest_representation(AVFormatContext *s, const char *url, subtitle_rep_idx += type == AVMEDIA_TYPE_SUBTITLE; end: + if (rep_id_val) xmlFree(rep_id_val); if (rep_bandwidth_val) @@ -1116,6 +1242,62 @@ end: return ret; } +static int parse_manifest_adaptationset_attr(AVFormatContext *s, xmlNodePtr adaptionset_node) +{ + int ret = 0; + DASHContext *c = s->priv_data; + + if (!adaptionset_node) { + av_log(s, AV_LOG_WARNING, "Cannot get AdaptionSet\n"); + return AVERROR(EINVAL); + } + c->adaptionset_minframerate = av_make_q(0, 0); + c->adaptionset_maxframerate = av_make_q(0, 0); + c->adaptionset_maxbw = UINT64_MAX; + c->adaptionset_minbw = 0; + c->adaptionset_minwidth = 0; + c->adaptionset_maxwidth = UINT64_MAX; + c->adaptionset_minheight = 0; + c->adaptionset_maxheight = UINT64_MAX; + + c->adaptionset_lang = xmlGetProp(adaptionset_node, "lang"); + + ret = dash_prop_get_int64(s, adaptionset_node, &c->adaptionset_minbw, "minBandwidth"); + if (ret < 0) + c->adaptionset_minbw = 0; + + ret = dash_prop_get_int64(s, adaptionset_node, &c->adaptionset_maxbw, "maxBandwidth"); + if (ret <= 0) + c->adaptionset_maxbw = UINT64_MAX; + + ret = dash_prop_get_int64(s, adaptionset_node, &c->adaptionset_minwidth, "minWidth"); + if (ret < 0) + c->adaptionset_minwidth = 0; + + ret = dash_prop_get_int64(s, adaptionset_node, &c->adaptionset_maxwidth, "maxWidth"); + if (ret <= 0) + c->adaptionset_maxwidth = UINT64_MAX; + + ret = dash_prop_get_int64(s, adaptionset_node, &c->adaptionset_minheight, "minHeight"); + if (ret < 0) + c->adaptionset_minheight = 0; + + ret = dash_prop_get_int64(s, adaptionset_node, &c->adaptionset_maxheight, "maxHeight"); + if (ret <= 0) + c->adaptionset_maxheight = UINT64_MAX; + + ret = dash_get_prop_ratio(s, adaptionset_node, &c->adaptionset_minframerate, "minFrameRate"); + if (ret < 0) { + c->adaptionset_minframerate = av_make_q(0, 0); + } + + ret = dash_get_prop_ratio(s, adaptionset_node, &c->adaptionset_maxframerate, "maxFrameRate"); + if (ret < 0) + c->adaptionset_maxframerate = av_make_q(0, 0); + + return ret; +} + static int parse_manifest_adaptationset(AVFormatContext *s, const char *url, xmlNodePtr adaptionset_node, xmlNodePtr mpd_baseurl_node, @@ -1131,19 +1313,10 @@ static int parse_manifest_adaptationset(AVFormatContext *s, const char *url, xmlNodePtr adaptionset_segmentlist_node = NULL; xmlNodePtr adaptionset_supplementalproperty_node = NULL; xmlNodePtr node = NULL; - c->adaptionset_contenttype_val = xmlGetProp(adaptionset_node, "contentType"); - c->adaptionset_par_val = xmlGetProp(adaptionset_node, "par"); - c->adaptionset_lang_val = xmlGetProp(adaptionset_node, "lang"); - c->adaptionset_minbw_val = xmlGetProp(adaptionset_node, "minBandwidth"); - c->adaptionset_maxbw_val = xmlGetProp(adaptionset_node, "maxBandwidth"); - c->adaptionset_minwidth_val = xmlGetProp(adaptionset_node, "minWidth"); - c->adaptionset_maxwidth_val = xmlGetProp(adaptionset_node, "maxWidth"); - c->adaptionset_minheight_val = xmlGetProp(adaptionset_node, "minHeight"); - c->adaptionset_maxheight_val = xmlGetProp(adaptionset_node, "maxHeight"); - c->adaptionset_minframerate_val = xmlGetProp(adaptionset_node, "minFrameRate"); - c->adaptionset_maxframerate_val = xmlGetProp(adaptionset_node, "maxFrameRate"); - c->adaptionset_segmentalignment_val = xmlGetProp(adaptionset_node, "segmentAlignment"); - c->adaptionset_bitstreamswitching_val = xmlGetProp(adaptionset_node, "bitstreamSwitching"); + + ret = parse_manifest_adaptationset_attr(s, adaptionset_node); + if (ret < 0) + return ret; node = xmlFirstElementChild(adaptionset_node); while (node) { @@ -1170,12 +1343,15 @@ static int parse_manifest_adaptationset(AVFormatContext *s, const char *url, adaptionset_segmentlist_node, adaptionset_supplementalproperty_node); if (ret < 0) { - return ret; + goto end; } } node = xmlNextElementSibling(node); } - return 0; + +end: + av_freep(&c->adaptionset_lang); + return ret; } static int parse_programinformation(AVFormatContext *s, xmlNodePtr node) @@ -2148,6 +2324,10 @@ static int dash_read_header(AVFormatContext *s) av_dict_set_int(&rep->assoc_stream->metadata, "variant_bitrate", rep->bandwidth, 0); if (rep->id[0]) av_dict_set(&rep->assoc_stream->metadata, "id", rep->id, 0); + if (rep->lang) { + av_dict_set(&rep->assoc_stream->metadata, "lang", rep->lang, 0); + av_freep(&rep->lang); + } } for (i = 0; i < c->n_subtitles; i++) { rep = c->subtitles[i]; @@ -2155,6 +2335,10 @@ static int dash_read_header(AVFormatContext *s) rep->assoc_stream = s->streams[rep->stream_index]; if (rep->id[0]) av_dict_set(&rep->assoc_stream->metadata, "id", rep->id, 0); + if (rep->lang) { + av_dict_set(&rep->assoc_stream->metadata, "lang", rep->lang, 0); + av_freep(&rep->lang); + } } } -- 2.25.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".