cbs.cpp File Reference

Definitions for FFmpeg Coded Bitstream API. More...

#include <libavcodec/avcodec.h>
#include <libavcodec/cbs_h264.h>
#include <libavcodec/cbs_h265.h>
#include <libavcodec/h264_levels.h>
#include <libavutil/pixdesc.h>
#include "cbs.h"
#include "logging.h"
#include "utility.h"

Include dependency graph for cbs.cpp:

Classes
class	cbs::frag_t

Typedefs
using	cbs::ctx_t = util::safe_ptr<CodedBitstreamContext, close>

Functions
void	cbs::close (CodedBitstreamContext *c)
h264_t	cbs::make_sps_h264 (const AVCodecContext *avctx, const AVPacket *packet)
hevc_t	cbs::make_sps_hevc (const AVCodecContext *avctx, const AVPacket *packet)
bool	cbs::validate_sps (const AVPacket *packet, int codec_id)
	Validates the Sequence Parameter Set (SPS) of a given packet.
util::buffer_t< std::uint8_t >	cbs::write (cbs::ctx_t &cbs_ctx, std::uint8_t nal, void *uh, AVCodecID codec_id)
util::buffer_t< std::uint8_t >	cbs::write (std::uint8_t nal, void *uh, AVCodecID codec_id)

Detailed Description

Definitions for FFmpeg Coded Bitstream API.

Function Documentation

validate_sps()

bool cbs::validate_sps	(	const AVPacket *	packet,
		int	codec_id )

Validates the Sequence Parameter Set (SPS) of a given packet.

This function initializes a Coded Bitstream Context and reads the packet into a Coded Bitstream Fragment. It then checks if the SPS->VUI (Video Usability Information) is present in the active SPS of the packet. This is done for both H264 and H265 codecs.

Parameters

packet	The packet to validate.
codec_id	The ID of the codec used (either AV_CODEC_ID_H264 or AV_CODEC_ID_H265).

Returns

True if the SPS->VUI is present in the active SPS of the packet, false otherwise.