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asf: export all the DRM stuff, some of it are human readable strings.

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-10-16 05:04:48 +02:00
parent 6322a31df3
commit 2eaa55375b
1 changed files with 14 additions and 1 deletions
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15
libavformat/asfdec.c
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@ -165,6 +165,9 @@ static void get_tag(AVFormatContext *s, const char *key, int type, int len)
if (type == 0) { // UTF16-LE
avio_get_str16le(s->pb, len, value, 2*len + 1);
} else if (type == -1) { // ASCII
get_buffer(s->pb, value, len);
value[len]=0;
} else if (type > 1 && type <= 5) { // boolean or DWORD or QWORD or WORD
uint64_t num = get_value(s->pb, type);
snprintf(value, len, "%"PRIu64, num);
@ -636,8 +639,18 @@ static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
} else {
if (!s->keylen) {
if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
unsigned int len;
AVPacket pkt;
av_log(s, AV_LOG_WARNING, "DRM protected stream detected, decoding will likely fail!\n");
av_dict_set(&s->metadata, "encryption", "ASF Content Encryption", 0);
len= avio_rl32(pb);
av_log(s, AV_LOG_DEBUG, "Secret data:\n");
av_get_packet(pb, &pkt, len); av_hex_dump_log(s, AV_LOG_DEBUG, pkt.data, pkt.size); av_free_packet(&pkt);
len= avio_rl32(pb);
get_tag(s, "ASF_Protection_Type", -1, len);
len= avio_rl32(pb);
get_tag(s, "ASF_Key_ID", -1, len);
len= avio_rl32(pb);
get_tag(s, "ASF_License_URL", -1, len);
} else if (!ff_guidcmp(&g, &ff_asf_ext_content_encryption)) {
av_log(s, AV_LOG_WARNING, "Ext DRM protected stream detected, decoding will likely fail!\n");
av_dict_set(&s->metadata, "encryption", "ASF Extended Content Encryption", 0);