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Perf: Refine header extensions marshal

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This commit is contained in:
winlin 2021-02-28 09:51:28 +08:00
parent eb9a263433
commit 7c517988a6
2 changed files with 16 additions and 25 deletions
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30
trunk/src/kernel/srs_kernel_rtc_rtp.cpp
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@ -225,11 +225,6 @@ void SrsRtpExtensionTwcc::assign(const SrsRtpExtensionTwcc& h)
sn_ = h.sn_;
}
bool SrsRtpExtensionTwcc::has_twcc_ext()
{
return has_twcc_;
}
srs_error_t SrsRtpExtensionTwcc::decode(SrsBuffer* buf)
{
srs_error_t err = srs_success;
@ -481,7 +476,7 @@ srs_error_t SrsRtpExtensions::decode_0xbede(SrsBuffer* buf)
uint64_t SrsRtpExtensions::nb_bytes()
{
int size = 4 + (twcc_.has_twcc_ext() ? twcc_.nb_bytes() : 0);
int size = 4 + (twcc_.exists() ? twcc_.nb_bytes() : 0);
size += (audio_level_.exists() ? audio_level_.nb_bytes() : 0);
// add padding
size += (size % 4 == 0) ? 0 : (4 - size % 4);
@ -497,7 +492,7 @@ srs_error_t SrsRtpExtensions::encode(SrsBuffer* buf)
// Write length.
int len = 0;
if (twcc_.has_twcc_ext()) {
if (twcc_.exists()) {
len += twcc_.nb_bytes();
}
@ -508,10 +503,14 @@ srs_error_t SrsRtpExtensions::encode(SrsBuffer* buf)
int padding_count = (len % 4 == 0) ? 0 : (4 - len % 4);
len += padding_count;
if (!buf->require(len)) {
return srs_error_new(ERROR_RTC_RTP_MUXER, "requires %d bytes", len);
}
buf->write_2bytes(len / 4);
// Write extensions.
if (twcc_.has_twcc_ext()) {
if (twcc_.exists()) {
if ((err = twcc_.encode(buf)) != srs_success) {
return srs_error_wrap(err, "encode twcc extension");
}
@ -524,19 +523,14 @@ srs_error_t SrsRtpExtensions::encode(SrsBuffer* buf)
}
// add padding
while(padding_count > 0) {
buf->write_1bytes(0);
padding_count--;
if (padding_count) {
memset(buf->head(), 0, padding_count);
buf->skip(padding_count);
}
return err;
}
bool SrsRtpExtensions::exists()
{
return has_ext_;
}
void SrsRtpExtensions::set_types_(SrsRtpExtensionTypes* types)
{
types_ = types;
@ -544,7 +538,7 @@ void SrsRtpExtensions::set_types_(SrsRtpExtensionTypes* types)
srs_error_t SrsRtpExtensions::get_twcc_sequence_number(uint16_t& twcc_sn)
{
if (twcc_.has_twcc_ext()) {
if (twcc_.exists()) {
twcc_sn = twcc_.get_sn();
return srs_success;
}
@ -1080,7 +1074,7 @@ srs_error_t SrsRtpPacket2::encode(SrsBuffer* buf)
if (!buf->require(padding)) {
return srs_error_new(ERROR_RTC_RTP_MUXER, "requires %d bytes", padding);
}
memset(buf->data() + buf->pos(), padding, padding);
memset(buf->head(), padding, padding);
buf->skip(padding);
}