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asfdec: split asf_read_header()

Browse Source 
Only trivial splits are done here -- i.e. copy/paste + reindent +
missing variable declarations.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit c1fea23070)
oldabi
Anton Khirnov 14 years ago committed by Michael Niedermayer
parent fe1752865e
commit e5d4a95334
1 changed files with 214 additions and 151 deletions
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  1. 365
      libavformat/asfdec.c

365
libavformat/asfdec.c
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@ -184,6 +184,213 @@ finish:
url_fseek(s->pb, off + len, SEEK_SET);
}
static int asf_read_file_properties(AVFormatContext *s, int64_t size)
{
ASFContext *asf = s->priv_data;
ByteIOContext *pb = s->pb;
ff_get_guid(pb, &asf->hdr.guid);
asf->hdr.file_size = get_le64(pb);
asf->hdr.create_time = get_le64(pb);
get_le64(pb); /* number of packets */
asf->hdr.play_time = get_le64(pb);
asf->hdr.send_time = get_le64(pb);
asf->hdr.preroll = get_le32(pb);
asf->hdr.ignore = get_le32(pb);
asf->hdr.flags = get_le32(pb);
asf->hdr.min_pktsize = get_le32(pb);
asf->hdr.max_pktsize = get_le32(pb);
asf->hdr.max_bitrate = get_le32(pb);
s->packet_size = asf->hdr.max_pktsize;
return 0;
}
static int asf_read_ext_stream_properties(AVFormatContext *s, int64_t size)
{
ASFContext *asf = s->priv_data;
ByteIOContext *pb = s->pb;
ff_asf_guid g;
int ext_len, payload_ext_ct, stream_ct, i;
uint32_t ext_d, leak_rate, stream_num;
unsigned int stream_languageid_index;
get_le64(pb); // starttime
get_le64(pb); // endtime
leak_rate = get_le32(pb); // leak-datarate
get_le32(pb); // bucket-datasize
get_le32(pb); // init-bucket-fullness
get_le32(pb); // alt-leak-datarate
get_le32(pb); // alt-bucket-datasize
get_le32(pb); // alt-init-bucket-fullness
get_le32(pb); // max-object-size
get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
stream_num = get_le16(pb); // stream-num
stream_languageid_index = get_le16(pb); // stream-language-id-index
if (stream_num < 128)
asf->streams[stream_num].stream_language_index = stream_languageid_index;
get_le64(pb); // avg frametime in 100ns units
stream_ct = get_le16(pb); //stream-name-count
payload_ext_ct = get_le16(pb); //payload-extension-system-count
if (stream_num < 128)
asf->stream_bitrates[stream_num] = leak_rate;
for (i=0; i<stream_ct; i++){
get_le16(pb);
ext_len = get_le16(pb);
url_fseek(pb, ext_len, SEEK_CUR);
}
for (i=0; i<payload_ext_ct; i++){
ff_get_guid(pb, &g);
ext_d=get_le16(pb);
ext_len=get_le32(pb);
url_fseek(pb, ext_len, SEEK_CUR);
}
return 0;
}
static int asf_read_content_desc(AVFormatContext *s, int64_t size)
{
ByteIOContext *pb = s->pb;
int len1, len2, len3, len4, len5;
len1 = get_le16(pb);
len2 = get_le16(pb);
len3 = get_le16(pb);
len4 = get_le16(pb);
len5 = get_le16(pb);
get_tag(s, "title" , 0, len1);
get_tag(s, "author" , 0, len2);
get_tag(s, "copyright", 0, len3);
get_tag(s, "comment" , 0, len4);
url_fskip(pb, len5);
return 0;
}
static int asf_read_ext_content_desc(AVFormatContext *s, int64_t size)
{
ByteIOContext *pb = s->pb;
ASFContext *asf = s->priv_data;
int desc_count, i, ret;
desc_count = get_le16(pb);
for(i=0;i<desc_count;i++) {
int name_len,value_type,value_len;
char name[1024];
name_len = get_le16(pb);
if (name_len%2) // must be even, broken lavf versions wrote len-1
name_len += 1;
if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
url_fskip(pb, name_len - ret);
value_type = get_le16(pb);
value_len = get_le16(pb);
if (!value_type && value_len%2)
value_len += 1;
/**
* My sample has that stream set to 0 maybe that mean the container.
* Asf stream count start at 1. I am using 0 to the container value since it's unused
*/
if (!strcmp(name, "AspectRatioX")){
asf->dar[0].num= get_value(s->pb, value_type);
} else if(!strcmp(name, "AspectRatioY")){
asf->dar[0].den= get_value(s->pb, value_type);
} else
get_tag(s, name, value_type, value_len);
}
return 0;
}
static int asf_read_language_list(AVFormatContext *s, int64_t size)
{
ByteIOContext *pb = s->pb;
ASFContext *asf = s->priv_data;
int j, ret;
int stream_count = get_le16(pb);
for(j = 0; j < stream_count; j++) {
char lang[6];
unsigned int lang_len = get_byte(pb);
if ((ret = avio_get_str16le(pb, lang_len, lang, sizeof(lang))) < lang_len)
url_fskip(pb, lang_len - ret);
if (j < 128)
av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
}
return 0;
}
static int asf_read_metadata(AVFormatContext *s, int64_t size)
{
ByteIOContext *pb = s->pb;
ASFContext *asf = s->priv_data;
int n, stream_num, name_len, value_len, value_type, value_num;
int ret, i;
n = get_le16(pb);
for(i=0;i<n;i++) {
char name[1024];
get_le16(pb); //lang_list_index
stream_num= get_le16(pb);
name_len= get_le16(pb);
value_type= get_le16(pb);
value_len= get_le32(pb);
if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
url_fskip(pb, name_len - ret);
//av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
value_num= get_le16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
url_fskip(pb, value_len - 2);
if(stream_num<128){
if (!strcmp(name, "AspectRatioX")) asf->dar[stream_num].num= value_num;
else if(!strcmp(name, "AspectRatioY")) asf->dar[stream_num].den= value_num;
}
}
return 0;
}
static int asf_read_marker(AVFormatContext *s, int64_t size)
{
ByteIOContext *pb = s->pb;
int i, count, name_len, ret;
char name[1024];
get_le64(pb); // reserved 16 bytes
get_le64(pb); // ...
count = get_le32(pb); // markers count
get_le16(pb); // reserved 2 bytes
name_len = get_le16(pb); // name length
for(i=0;i<name_len;i++){
get_byte(pb); // skip the name
}
for(i=0;i<count;i++){
int64_t pres_time;
int name_len;
get_le64(pb); // offset, 8 bytes
pres_time = get_le64(pb); // presentation time
get_le16(pb); // entry length
get_le32(pb); // send time
get_le32(pb); // flags
name_len = get_le32(pb); // name length
if ((ret = avio_get_str16le(pb, name_len * 2, name, sizeof(name))) < name_len)
url_fskip(pb, name_len - ret);
ff_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
}
return 0;
}
static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
ASFContext *asf = s->priv_data;
@ -204,7 +411,6 @@ static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
memset(&asf->asfid2avid, -1, sizeof(asf->asfid2avid));
for(;;) {
uint64_t gpos= url_ftell(pb);
int ret;
ff_get_guid(pb, &g);
gsize = get_le64(pb);
av_dlog(s, "%08"PRIx64": ", gpos);
@ -223,19 +429,7 @@ static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
if (gsize < 24)
return -1;
if (!ff_guidcmp(&g, &ff_asf_file_header)) {
ff_get_guid(pb, &asf->hdr.guid);
asf->hdr.file_size = get_le64(pb);
asf->hdr.create_time = get_le64(pb);
get_le64(pb); /* number of packets */
asf->hdr.play_time = get_le64(pb);
asf->hdr.send_time = get_le64(pb);
asf->hdr.preroll = get_le32(pb);
asf->hdr.ignore = get_le32(pb);
asf->hdr.flags = get_le32(pb);
asf->hdr.min_pktsize = get_le32(pb);
asf->hdr.max_pktsize = get_le32(pb);
asf->hdr.max_bitrate = get_le32(pb);
s->packet_size = asf->hdr.max_pktsize;
asf_read_file_properties(s, gsize);
} else if (!ff_guidcmp(&g, &ff_asf_stream_header)) {
enum AVMediaType type;
int type_specific_size, sizeX;
@ -413,121 +607,15 @@ static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
pos2 = url_ftell(pb);
url_fskip(pb, gsize - (pos2 - pos1 + 24));
} else if (!ff_guidcmp(&g, &ff_asf_comment_header)) {
int len1, len2, len3, len4, len5;
len1 = get_le16(pb);
len2 = get_le16(pb);
len3 = get_le16(pb);
len4 = get_le16(pb);
len5 = get_le16(pb);
get_tag(s, "title" , 0, len1);
get_tag(s, "author" , 0, len2);
get_tag(s, "copyright", 0, len3);
get_tag(s, "comment" , 0, len4);
url_fskip(pb, len5);
asf_read_content_desc(s, gsize);
} else if (!ff_guidcmp(&g, &ff_asf_language_guid)) {
int j;
int stream_count = get_le16(pb);
for(j = 0; j < stream_count; j++) {
char lang[6];
unsigned int lang_len = get_byte(pb);
if ((ret = avio_get_str16le(pb, lang_len, lang, sizeof(lang))) < lang_len)
url_fskip(pb, lang_len - ret);
if (j < 128)
av_strlcpy(asf->stream_languages[j], lang, sizeof(*asf->stream_languages));
}
asf_read_language_list(s, gsize);
} else if (!ff_guidcmp(&g, &ff_asf_extended_content_header)) {
int desc_count, i;
desc_count = get_le16(pb);
for(i=0;i<desc_count;i++) {
int name_len,value_type,value_len;
char name[1024];
name_len = get_le16(pb);
if (name_len%2) // must be even, broken lavf versions wrote len-1
name_len += 1;
if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
url_fskip(pb, name_len - ret);
value_type = get_le16(pb);
value_len = get_le16(pb);
if (!value_type && value_len%2)
value_len += 1;
/**
* My sample has that stream set to 0 maybe that mean the container.
* Asf stream count start at 1. I am using 0 to the container value since it's unused
*/
if (!strcmp(name, "AspectRatioX")){
asf->dar[0].num= get_value(s->pb, value_type);
} else if(!strcmp(name, "AspectRatioY")){
asf->dar[0].den= get_value(s->pb, value_type);
} else
get_tag(s, name, value_type, value_len);
}
asf_read_ext_content_desc(s, gsize);
} else if (!ff_guidcmp(&g, &ff_asf_metadata_header)) {
int n, stream_num, name_len, value_len, value_type, value_num;
n = get_le16(pb);
for(i=0;i<n;i++) {
char name[1024];
get_le16(pb); //lang_list_index
stream_num= get_le16(pb);
name_len= get_le16(pb);
value_type= get_le16(pb);
value_len= get_le32(pb);
if ((ret = avio_get_str16le(pb, name_len, name, sizeof(name))) < name_len)
url_fskip(pb, name_len - ret);
//av_log(s, AV_LOG_ERROR, "%d %d %d %d %d <%s>\n", i, stream_num, name_len, value_type, value_len, name);
value_num= get_le16(pb);//we should use get_value() here but it does not work 2 is le16 here but le32 elsewhere
url_fskip(pb, value_len - 2);
if(stream_num<128){
if (!strcmp(name, "AspectRatioX")) asf->dar[stream_num].num= value_num;
else if(!strcmp(name, "AspectRatioY")) asf->dar[stream_num].den= value_num;
}
}
asf_read_metadata(s, gsize);
} else if (!ff_guidcmp(&g, &ff_asf_ext_stream_header)) {
int ext_len, payload_ext_ct, stream_ct;
uint32_t ext_d, leak_rate, stream_num;
unsigned int stream_languageid_index;
get_le64(pb); // starttime
get_le64(pb); // endtime
leak_rate = get_le32(pb); // leak-datarate
get_le32(pb); // bucket-datasize
get_le32(pb); // init-bucket-fullness
get_le32(pb); // alt-leak-datarate
get_le32(pb); // alt-bucket-datasize
get_le32(pb); // alt-init-bucket-fullness
get_le32(pb); // max-object-size
get_le32(pb); // flags (reliable,seekable,no_cleanpoints?,resend-live-cleanpoints, rest of bits reserved)
stream_num = get_le16(pb); // stream-num
stream_languageid_index = get_le16(pb); // stream-language-id-index
if (stream_num < 128)
asf->streams[stream_num].stream_language_index = stream_languageid_index;
get_le64(pb); // avg frametime in 100ns units
stream_ct = get_le16(pb); //stream-name-count
payload_ext_ct = get_le16(pb); //payload-extension-system-count
if (stream_num < 128)
asf->stream_bitrates[stream_num] = leak_rate;
for (i=0; i<stream_ct; i++){
get_le16(pb);
ext_len = get_le16(pb);
url_fseek(pb, ext_len, SEEK_CUR);
}
for (i=0; i<payload_ext_ct; i++){
ff_get_guid(pb, &g);
ext_d=get_le16(pb);
ext_len=get_le32(pb);
url_fseek(pb, ext_len, SEEK_CUR);
}
asf_read_ext_stream_properties(s, gsize);
// there could be a optional stream properties object to follow
// if so the next iteration will pick it up
@ -539,32 +627,7 @@ static int asf_read_header(AVFormatContext *s, AVFormatParameters *ap)
v2 = get_le16(pb);
continue;
} else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
int i, count, name_len;
char name[1024];
get_le64(pb); // reserved 16 bytes
get_le64(pb); // ...
count = get_le32(pb); // markers count
get_le16(pb); // reserved 2 bytes
name_len = get_le16(pb); // name length
for(i=0;i<name_len;i++){
get_byte(pb); // skip the name
}
for(i=0;i<count;i++){
int64_t pres_time;
int name_len;
get_le64(pb); // offset, 8 bytes
pres_time = get_le64(pb); // presentation time
get_le16(pb); // entry length
get_le32(pb); // send time
get_le32(pb); // flags
name_len = get_le32(pb); // name length
if ((ret = avio_get_str16le(pb, name_len * 2, name, sizeof(name))) < name_len)
url_fskip(pb, name_len - ret);
ff_new_chapter(s, i, (AVRational){1, 10000000}, pres_time, AV_NOPTS_VALUE, name );
}
asf_read_marker(s, gsize);
} else if (url_feof(pb)) {
return -1;
} else {

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