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avformat/dashdec.c: Download dash content with byte range info

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Colin NG 2018-01-21 13:27:48 +08:00 committed by Steven Liu
parent 1f48c5c067
commit 8db4ef3e6d
1 changed files with 30 additions and 6 deletions
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36
libavformat/dashdec.c
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@ -552,6 +552,23 @@ static enum AVMediaType get_content_type(xmlNodePtr node)
return type; return type;
} }
static struct fragment * get_Fragment(char *range)
{
struct fragment * seg = av_mallocz(sizeof(struct fragment));
if (!seg)
return NULL;
seg->size = -1;
if (range) {
char *str_end_offset;
char *str_offset = av_strtok(range, "-", &str_end_offset);
seg->url_offset = strtoll(str_offset, NULL, 10);
seg->size = strtoll(str_end_offset, NULL, 10) - seg->url_offset;
}
return seg;
}
static int parse_manifest_segmenturlnode(AVFormatContext *s, struct representation *rep, static int parse_manifest_segmenturlnode(AVFormatContext *s, struct representation *rep,
xmlNodePtr fragmenturl_node, xmlNodePtr fragmenturl_node,
xmlNodePtr *baseurl_nodes, xmlNodePtr *baseurl_nodes,
@ -560,13 +577,16 @@ static int parse_manifest_segmenturlnode(AVFormatContext *s, struct representati
{ {
char *initialization_val = NULL; char *initialization_val = NULL;
char *media_val = NULL; char *media_val = NULL;
char *range_val = NULL;
if (!av_strcasecmp(fragmenturl_node->name, (const char *)"Initialization")) { if (!av_strcasecmp(fragmenturl_node->name, (const char *)"Initialization")) {
initialization_val = xmlGetProp(fragmenturl_node, "sourceURL"); initialization_val = xmlGetProp(fragmenturl_node, "sourceURL");
if (initialization_val) { range_val = xmlGetProp(fragmenturl_node, "range");
rep->init_section = av_mallocz(sizeof(struct fragment)); if (initialization_val || range_val) {
rep->init_section = get_Fragment(range_val);
if (!rep->init_section) { if (!rep->init_section) {
xmlFree(initialization_val); xmlFree(initialization_val);
xmlFree(range_val);
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
} }
rep->init_section->url = get_content_url(baseurl_nodes, 4, rep->init_section->url = get_content_url(baseurl_nodes, 4,
@ -576,17 +596,20 @@ static int parse_manifest_segmenturlnode(AVFormatContext *s, struct representati
if (!rep->init_section->url) { if (!rep->init_section->url) {
av_free(rep->init_section); av_free(rep->init_section);
xmlFree(initialization_val); xmlFree(initialization_val);
xmlFree(range_val);
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
} }
rep->init_section->size = -1;
xmlFree(initialization_val); xmlFree(initialization_val);
xmlFree(range_val);
} }
} else if (!av_strcasecmp(fragmenturl_node->name, (const char *)"SegmentURL")) { } else if (!av_strcasecmp(fragmenturl_node->name, (const char *)"SegmentURL")) {
media_val = xmlGetProp(fragmenturl_node, "media"); media_val = xmlGetProp(fragmenturl_node, "media");
if (media_val) { range_val = xmlGetProp(fragmenturl_node, "mediaRange");
struct fragment *seg = av_mallocz(sizeof(struct fragment)); if (media_val || range_val) {
struct fragment *seg = get_Fragment(range_val);
if (!seg) { if (!seg) {
xmlFree(media_val); xmlFree(media_val);
xmlFree(range_val);
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
} }
seg->url = get_content_url(baseurl_nodes, 4, seg->url = get_content_url(baseurl_nodes, 4,
@ -596,11 +619,12 @@ static int parse_manifest_segmenturlnode(AVFormatContext *s, struct representati
if (!seg->url) { if (!seg->url) {
av_free(seg); av_free(seg);
xmlFree(media_val); xmlFree(media_val);
xmlFree(range_val);
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
} }
seg->size = -1;
dynarray_add(&rep->fragments, &rep->n_fragments, seg); dynarray_add(&rep->fragments, &rep->n_fragments, seg);
xmlFree(media_val); xmlFree(media_val);
xmlFree(range_val);
} }
} }