pes.c File Reference

Include dependency graph for pes.c:

Functions
static int	PESHeader (uint8_t *p_hdr, mtime_t i_pts, mtime_t i_dts, int i_es_size, es_format_t *p_fmt, int i_stream_id, bool b_mpeg2, bool b_data_alignment, int i_header_size)
	PESHeader, write a pes header.
int	EStoPES (sout_instance_t *p_sout, block_t **pp_pes, block_t *p_es, es_format_t *p_fmt, int i_stream_id, int b_mpeg2, int b_data_alignment, int i_header_size, int i_max_pes_size)
	EStoPES, encapsulate an elementary stream block into PES packet(s) each with a maximal payload size of @.

---

Function Documentation

int EStoPES	(	sout_instance_t *	p_sout,
		block_t **	pp_pes,
		block_t *	p_es,
		es_format_t *	p_fmt,
		int	i_stream_id,
		int	b_mpeg2,
		int	b_data_alignment,
		int	i_header_size,
		int	i_max_pes_size
	)

EStoPES, encapsulate an elementary stream block into PES packet(s) each with a maximal payload size of @.

In some circumstances, unbounded PES packets are allowed:

• Transport streams only (NOT programme streams)
• Only some types of elementary streams (eg MPEG2 video) It is the responsibility of the caller to enforce these constraints.

EStoPES will only produce an unbounded PES packet if:

• ES is VIDEO_ES
• i_max_pes_size > PES_PAYLOAD_SIZE_MAX
• length of p_es > PES_PAYLOAD_SIZE_MAX If the last condition is not met, a single PES packet is produced which is not unbounded in length.

Parameters:

	i_stream_id	stream id as follows: 0x00 - 0xff : normal stream_id as per Table 2-18 0xfd00 - 0xfd7f : stream_id_extension = low 7 bits (stream_id = PES_EXTENDED_STREAM_ID) 0xbd00 - 0xbdff : private_id = low 8 bits (stream_id = PES_PRIVATE_STREAM)
	i_header_size	length of padding data to insert into PES packet header in bytes.
	i_max_pes_size	maximum length of each pes packet payload. if zero, uses default maximum. To allow unbounded PES packets in transport stream VIDEO_ES, set to INT_MAX.

References __MIN, BLOCK_FLAG_TYPE_I, block_New, block_Realloc(), block_t::i_buffer, es_format_t::i_cat, es_format_t::i_codec, block_t::i_dts, es_format_t::i_extra, block_t::i_flags, block_t::i_length, block_t::i_pts, block_t::p_buffer, es_format_t::p_extra, block_t::p_next, PES_PAYLOAD_SIZE_MAX, PESHeader(), VIDEO_ES, VLC_CODEC_MP4V, vlc_memcpy(), and VLC_UNUSED.

Referenced by Mux().

static int PESHeader	(	uint8_t *	p_hdr,
		mtime_t	i_pts,
		mtime_t	i_dts,
		int	i_es_size,
		es_format_t *	p_fmt,
		int	i_stream_id,
		bool	b_mpeg2,
		bool	b_data_alignment,
		int	i_header_size
	)			[inline, static]

PESHeader, write a pes header.

Parameters:

	i_es_size	length of payload data. (Must be < PES_PAYLOAD_SIZE_MAX unless the conditions for unbounded PES packets are met)
	i_stream_id	stream id as follows: 0x00 - 0xff : normal stream_id as per Table 2-18 0xfd00 - 0xfd7f : stream_id_extension = low 7 bits (stream_id = PES_EXTENDED_STREAM_ID) 0xbd00 - 0xbdff : private_id = low 8 bits (stream_id = PES_PRIVATE_STREAM)
	i_header_size	length of padding data to insert into PES packet header in bytes.

References bits_align(), bits_initwrite(), bits_write(), es_format_t::i_cat, es_format_t::i_codec, bits_buffer_s::i_data, PES_DSMCC_STREAM, PES_ECM, PES_EMM, PES_EXTENDED_STREAM_ID, PES_ITU_T_H222_1_TYPE_E_STREAM, PES_PADDING, PES_PAYLOAD_SIZE_MAX, PES_PRIVATE_STREAM_1, PES_PRIVATE_STREAM_2, PES_PROGRAM_STREAM_DIRECTORY, PES_PROGRAM_STREAM_MAP, VIDEO_ES, and VLC_CODEC_MPGV.

Referenced by EStoPES().