mirror of
https://github.com/drasko/open-ameba.git
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62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
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#ifndef _MJPEG_H
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#define _MJPEG_H
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#include "dlist.h" //list management
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#include "basic_types.h"
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#include "osdep_service.h"
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//#include "osdep_api.h"
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#define MJPEG_DEBUG 0
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#if MJPEG_DEBUG
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#define MJPEG_PRINTF(fmt, args...) printf("\n\r%s: " fmt, __FUNCTION__, ## args)
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#define MJPEG_ERROR(fmt, args...) printf("\n\r%s: " fmt, __FUNCTION__, ## args)
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#else
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#define MJPEG_PRINTF(fmt, args...)
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#define MJPEG_ERROR(fmt, args...)
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#endif
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struct jpeghdr {
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unsigned int tspec:8; /* type-specific field */
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unsigned int off:24; /* fragment byte offset */
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u8 type; /* id of jpeg decoder params */
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u8 q; /* quantization factor (or table id) */
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u8 width; /* frame width in 8 pixel blocks */
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u8 height; /* frame height in 8 pixel blocks */
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};
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struct jpeghdr_rst {
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u16 dri; /*restart interval*/
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unsigned int f:1; /*restart first bit flag*/
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unsigned int l:1; /*restart last bit flag*/
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unsigned int count:14; /*restart count*/
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};
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struct jpeghdr_qtable {
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u8 mbz;
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u8 precision;
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u16 length;
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};
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#define RTP_JPEG_RESTART 0x40
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#define USE_EXPLICIT_DQT 128
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#define USE_IMPLICIT_DQT 0
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struct rtp_jpeg_obj
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{
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struct jpeghdr jpghdr;
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struct jpeghdr_rst rsthdr;
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struct jpeghdr_qtable qtable;
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u8 lqt[64*2]; /* Luma Quantizer table */
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u8 cqt[64*2]; /* Croma Quantizer table */
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int hdr_len;
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int frame_offset;
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};
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/*for debug purpose*/
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void dumpJpegHeader(struct jpeghdr *jpghdr);
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void dumpRstDeader(struct jpeghdr_rst *rsthdr);
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#endif /*_MJPEG_H*/
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