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

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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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18
trunk/src/kernel/srs_kernel_utility.hpp
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@ -32,6 +32,8 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#include <string>
class SrsStream;
// compare
#define srs_min(a, b) (((a) < (b))? (a) : (b))
#define srs_max(a, b) (((a) < (b))? (b) : (a))
@ -62,5 +64,21 @@ extern bool srs_string_ends_with(std::string str, std::string flag);
// create dir recursively
extern int srs_create_dir_recursively(std::string dir);
/**
* whether stream starts with the avc NALU in "AnnexB"
* from H.264-AVC-ISO_IEC_14496-10.pdf, page 211.
* start code must be "N[00] 00 00 01" where N>=0
* @param pnb_start_code output the size of start code, must >=3.
* NULL to ignore.
*/
extern bool srs_avc_startswith_annexb(SrsStream* stream, int* pnb_start_code = NULL);
/**
* whether stream starts with the aac ADTS
* from aac-mp4a-format-ISO_IEC_14496-3+2001.pdf, page 75, 1.A.2.2 ADTS.
* start code must be '1111 1111 1111'B, that is 0xFFF
*/
extern bool srs_aac_startswith_adts(SrsStream* stream);
#endif