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Make ebml_parse_tag return tag ID code

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(applying lessons learned from libshout)
This commit is contained in:
Joseph Wallace 2016-02-17 02:50:29 -05:00
parent a218055158
commit a2cac3ee93
1 changed files with 7 additions and 4 deletions
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11
src/format_ebml.c
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@ -183,6 +183,7 @@ static unsigned char *ebml_get_write_buffer(ebml_t *ebml, size_t *bytes);
static ssize_t ebml_wrote(ebml_t *ebml, size_t len);
static ssize_t ebml_parse_tag(unsigned char *buffer,
unsigned char *buffer_end,
uint_least64_t *tag_id,
uint_least64_t *payload_length);
static ssize_t ebml_parse_var_int(unsigned char *buffer,
unsigned char *buffer_end,
@ -605,6 +606,7 @@ static ssize_t ebml_wrote(ebml_t *ebml, size_t len)
ssize_t tag_length;
ssize_t value_length;
ssize_t track_number_length;
uint_least64_t tag_id;
uint_least64_t payload_length;
uint_least64_t data_value;
uint_least64_t track_number;
@ -628,7 +630,7 @@ static ssize_t ebml_wrote(ebml_t *ebml, size_t len)
}
tag_length = ebml_parse_tag(ebml->input_buffer + cursor,
end_of_buffer, &payload_length);
end_of_buffer, &tag_id, &payload_length);
if (tag_length == 0) {
/* Wait for more data */
@ -761,7 +763,7 @@ static ssize_t ebml_wrote(ebml_t *ebml, size_t len)
} else {
tag_length = ebml_parse_tag(ebml->input_buffer + cursor,
end_of_buffer, &payload_length);
end_of_buffer, &tag_id, &payload_length);
/* The header has been fully read by now, publish its size. */
ebml->header_size = ebml->header_position;
@ -861,16 +863,17 @@ static inline void ebml_check_track(ebml_t *ebml)
static ssize_t ebml_parse_tag(unsigned char *buffer,
unsigned char *buffer_end,
uint_least64_t *tag_id,
uint_least64_t *payload_length)
{
ssize_t type_length;
ssize_t size_length;
uint_least64_t value;
*tag_id = 0;
*payload_length = 0;
/* read past the type tag */
type_length = ebml_parse_var_int(buffer, buffer_end, &value);
type_length = ebml_parse_var_int(buffer, buffer_end, tag_id);
if (type_length <= 0) {
return type_length;