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for bug #293, http ts stream, move the avc codec from app to kernel.

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This commit is contained in:
winlin 2015-01-22 17:08:38 +08:00
parent dc6299171f
commit 913f98b902
17 changed files with 309 additions and 134 deletions
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48
trunk/src/kernel/srs_kernel_utility.cpp
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@ -39,6 +39,7 @@ using namespace std;
#include <srs_kernel_log.hpp>
#include <srs_kernel_error.hpp>
#include <srs_kernel_stream.hpp>
// this value must:
// equals to (SRS_SYS_CYCLE_INTERVAL*SRS_SYS_TIME_RESOLUTION_MS_TIMES)*1000
@ -278,3 +279,50 @@ int srs_create_dir_recursively(string dir)
return ret;
}
bool srs_avc_startswith_annexb(SrsStream* stream, int* pnb_start_code)
{
char* bytes = stream->data() + stream->pos();
char* p = bytes;
for (;;) {
if (!stream->require(p - bytes + 3)) {
return false;
}
// not match
if (p[0] != (char)0x00 || p[1] != (char)0x00) {
return false;
}
// match N[00] 00 00 01, where N>=0
if (p[2] == (char)0x01) {
if (pnb_start_code) {
*pnb_start_code = (int)(p - bytes) + 3;
}
return true;
}
p++;
}
return false;
}
bool srs_aac_startswith_adts(SrsStream* stream)
{
char* bytes = stream->data() + stream->pos();
char* p = bytes;
if (!stream->require(p - bytes + 2)) {
return false;
}
// matched 12bits 0xFFF,
// @remark, we must cast the 0xff to char to compare.
if (p[0] != (char)0xff || (char)(p[1] & 0xf0) != (char)0xf0) {
return false;
}
return true;
}