rtpdec_jpeg.c File Reference

#include "avformat.h"
#include "avio_internal.h"
#include "rtpdec.h"
#include "rtpdec_formats.h"
#include "libavutil/intreadwrite.h"
#include "libavcodec/jpegtables.h"
#include "libavcodec/mjpeg.h"
#include "libavcodec/bytestream.h"

Go to the source code of this file.

Data Structures
struct	PayloadContext
	RTP/JPEG specific private data. More...

Functions
static void	jpeg_close_context (PayloadContext *jpeg)
static int	jpeg_create_huffman_table (PutByteContext *p, int table_class, int table_id, const uint8_t *bits_table, const uint8_t *value_table)
static void	jpeg_put_marker (PutByteContext *pbc, int code)
static int	jpeg_create_header (uint8_t *buf, int size, uint32_t type, uint32_t w, uint32_t h, const uint8_t *qtable, int nb_qtable, int dri)
static void	create_default_qtables (uint8_t *qtables, uint8_t q)
static int	jpeg_parse_packet (AVFormatContext *ctx, PayloadContext *jpeg, AVStream *st, AVPacket *pkt, uint32_t *timestamp, const uint8_t *buf, int len, uint16_t seq, int flags)

Variables
static const uint8_t	default_quantizers [128]
RTPDynamicProtocolHandler	ff_jpeg_dynamic_handler

Function Documentation

static void jpeg_close_context ( PayloadContext *  jpeg )

static

Definition at line 64 of file rtpdec_jpeg.c.

static int jpeg_create_huffman_table ( PutByteContext *  p, int  table_class, int  table_id, const uint8_t *  bits_table, const uint8_t *  value_table  )

static

Definition at line 69 of file rtpdec_jpeg.c.

Referenced by jpeg_create_header().

static void jpeg_put_marker ( PutByteContext *  pbc, int  code  )

static

Definition at line 88 of file rtpdec_jpeg.c.

Referenced by jpeg_create_header().

static int jpeg_create_header ( uint8_t *  buf, int  size, uint32_t  type, uint32_t  w, uint32_t  h, const uint8_t *  qtable, int  nb_qtable, int  dri  )

static

Definition at line 94 of file rtpdec_jpeg.c.

Referenced by jpeg_parse_packet().

static void create_default_qtables ( uint8_t *  qtables, uint8_t  q  )

static

Definition at line 192 of file rtpdec_jpeg.c.

Referenced by jpeg_parse_packet().

static int jpeg_parse_packet ( AVFormatContext *  ctx, PayloadContext *  jpeg, AVStream *  st, AVPacket *  pkt, uint32_t *  timestamp, const uint8_t *  buf, int  len, uint16_t  seq, int  flags  )

static

Definition at line 214 of file rtpdec_jpeg.c.

Variable Documentation

const uint8_t default_quantizers[128]

static

Initial value:

= {
    
    16,  11,  12,  14,  12,  10,  16,  14,
    13,  14,  18,  17,  16,  19,  24,  40,
    26,  24,  22,  22,  24,  49,  35,  37,
    29,  40,  58,  51,  61,  60,  57,  51,
    56,  55,  64,  72,  92,  78,  64,  68,
    87,  69,  55,  56,  80,  109, 81,  87,
    95,  98,  103, 104, 103, 62,  77,  113,
    121, 112, 100, 120, 92,  101, 103, 99,

    
    17,  18,  18,  24,  21,  24,  47,  26,
    26,  47,  99,  66,  56,  66,  99,  99,
    99,  99,  99,  99,  99,  99,  99,  99,
    99,  99,  99,  99,  99,  99,  99,  99,
    99,  99,  99,  99,  99,  99,  99,  99,
    99,  99,  99,  99,  99,  99,  99,  99,
    99,  99,  99,  99,  99,  99,  99,  99,
    99,  99,  99,  99,  99,  99,  99,  99
}

Definition at line 42 of file rtpdec_jpeg.c.

Referenced by create_default_qtables().

RTPDynamicProtocolHandler ff_jpeg_dynamic_handler

Initial value:

= {
    .enc_name          = "JPEG",
    .codec_type        = AVMEDIA_TYPE_VIDEO,
    .codec_id          = AV_CODEC_ID_MJPEG,
    .priv_data_size    = sizeof(PayloadContext),
    .close             = jpeg_close_context,
    .parse_packet      = jpeg_parse_packet,
    .static_payload_id = 26,
}

Definition at line 382 of file rtpdec_jpeg.c.

Referenced by ff_register_rtp_dynamic_payload_handlers().