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Diffstat (limited to 'gst-libs/ext/mplex/yuv4mpeg.h')
| -rw-r--r-- | gst-libs/ext/mplex/yuv4mpeg.h | 473 |
1 files changed, 0 insertions, 473 deletions
diff --git a/gst-libs/ext/mplex/yuv4mpeg.h b/gst-libs/ext/mplex/yuv4mpeg.h deleted file mode 100644 index 6028ea88..00000000 --- a/gst-libs/ext/mplex/yuv4mpeg.h +++ /dev/null @@ -1,473 +0,0 @@ -/* - * yuv4mpeg.h: Functions for reading and writing "new" YUV4MPEG2 streams. - * - * Stream format is described at the end of this file. - * - * - * Copyright (C) 2001 Matthew J. Marjanovic <maddog@mir.com> - * - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#ifndef __YUV4MPEG_H__ -#define __YUV4MPEG_H__ - -#include <stdlib.h> -#include <mjpeg_types.h> -#include <unistd.h> -#include <mjpeg_logging.h> - - -/************************************************************************ - * error codes returned by y4m_* functions - ************************************************************************/ -#define Y4M_OK 0 -#define Y4M_ERR_RANGE 1 /* argument or tag value out of range */ -#define Y4M_ERR_SYSTEM 2 /* failed system call, check errno */ -#define Y4M_ERR_HEADER 3 /* illegal/malformed header */ -#define Y4M_ERR_BADTAG 4 /* illegal tag character */ -#define Y4M_ERR_MAGIC 5 /* bad header magic */ -#define Y4M_ERR_EOF 6 /* end-of-file (clean) */ -#define Y4M_ERR_XXTAGS 7 /* too many xtags */ -#define Y4M_ERR_BADEOF 8 /* unexpected end-of-file */ - - -/* generic 'unknown' value for integer parameters (e.g. interlace, height) */ -#define Y4M_UNKNOWN -1 - - - -/************************************************************************ - * 'ratio' datatype, for rational numbers - * (see 'ratio' functions down below) - ************************************************************************/ -typedef struct _y4m_ratio { - int n; /* numerator */ - int d; /* denominator */ -} y4m_ratio_t; - - -/************************************************************************ - * useful standard framerates (as ratios) - ************************************************************************/ -extern const y4m_ratio_t y4m_fps_UNKNOWN; -extern const y4m_ratio_t y4m_fps_NTSC_FILM; /* 24000/1001 film (in NTSC) */ -extern const y4m_ratio_t y4m_fps_FILM; /* 24fps film */ -extern const y4m_ratio_t y4m_fps_PAL; /* 25fps PAL */ -extern const y4m_ratio_t y4m_fps_NTSC; /* 30000/1001 NTSC */ -extern const y4m_ratio_t y4m_fps_30; /* 30fps */ -extern const y4m_ratio_t y4m_fps_PAL_FIELD; /* 50fps PAL field rate */ -extern const y4m_ratio_t y4m_fps_NTSC_FIELD; /* 60000/1001 NTSC field rate */ -extern const y4m_ratio_t y4m_fps_60; /* 60fps */ - -/************************************************************************ - * useful standard sample (pixel) aspect ratios (W:H) - ************************************************************************/ -extern const y4m_ratio_t y4m_sar_UNKNOWN; -extern const y4m_ratio_t y4m_sar_SQUARE; /* square pixels */ -extern const y4m_ratio_t y4m_sar_NTSC_CCIR601; /* 525-line (NTSC) Rec.601 */ -extern const y4m_ratio_t y4m_sar_NTSC_16_9; /* 16:9 NTSC/Rec.601 */ -extern const y4m_ratio_t y4m_sar_NTSC_SVCD_4_3; /* NTSC SVCD 4:3 */ -extern const y4m_ratio_t y4m_sar_NTSC_SVCD_16_9;/* NTSC SVCD 16:9 */ -extern const y4m_ratio_t y4m_sar_PAL_CCIR601; /* 625-line (PAL) Rec.601 */ -extern const y4m_ratio_t y4m_sar_PAL_16_9; /* 16:9 PAL/Rec.601 */ -extern const y4m_ratio_t y4m_sar_PAL_SVCD_4_3; /* PAL SVCD 4:3 */ -extern const y4m_ratio_t y4m_sar_PAL_SVCD_16_9; /* PAL SVCD 16:9 */ -extern const y4m_ratio_t y4m_sar_SQR_ANA16_9; /* anamorphic 16:9 sampled */ - /* from 4:3 with square pixels */ - -/************************************************************************ - * useful standard display aspect ratios (W:H) - ************************************************************************/ -extern const y4m_ratio_t y4m_dar_UNKNOWN; -extern const y4m_ratio_t y4m_dar_4_3; /* standard TV */ -extern const y4m_ratio_t y4m_dar_16_9; /* widescreen TV */ -extern const y4m_ratio_t y4m_dar_221_100; /* word-to-your-mother TV */ - - -/************************************************************************ - * 'xtag_list' --- list of unparsed and/or meta/X header tags - * - * Do not touch this structure directly! - * - * Use the y4m_xtag_*() functions (see below). - * You must initialize/finalize this structure before/after use. - ************************************************************************/ -#define Y4M_MAX_XTAGS 32 /* maximum number of xtags in list */ -#define Y4M_MAX_XTAG_SIZE 32 /* max length of an xtag (including 'X') */ -typedef struct _y4m_xtag_list { - int count; - char *tags[Y4M_MAX_XTAGS]; -} y4m_xtag_list_t; - - - -/************************************************************************ - * 'stream_info' --- stream header information - * - * Do not touch this structure directly! - * - * Use the y4m_si_*() functions (see below). - * You must initialize/finalize this structure before/after use. - ************************************************************************/ -typedef struct _y4m_stream_info { - /* values from header */ - int width; - int height; - int interlace; /* see Y4M_ILACE_* definitions below */ - y4m_ratio_t framerate; /* frames-per-second; 0:0 == unknown */ - y4m_ratio_t sampleaspect; /* pixel width/height; 0:0 == unknown */ - /* computed/derivative values */ - int framelength; /* bytes of data per frame (not including header) */ - /* mystical X tags */ - y4m_xtag_list_t x_tags; -} y4m_stream_info_t; - -/* possible options for the interlace parameter */ -#define Y4M_ILACE_NONE 0 /* non-interlaced, progressive frame */ -#define Y4M_ILACE_TOP_FIRST 1 /* interlaced, top-field first */ -#define Y4M_ILACE_BOTTOM_FIRST 2 /* interlaced, bottom-field first */ - - -/************************************************************************ - * 'frame_info' --- frame header information - * - * Do not touch this structure directly! - * - * Use the y4m_fi_*() functions (see below). - * You must initialize/finalize this structure before/after use. - ************************************************************************/ -typedef struct _y4m_frame_info { - /* mystical X tags */ - y4m_xtag_list_t x_tags; -} y4m_frame_info_t; - - - -#ifdef __cplusplus -extern "C" { -#else -#endif - - -/************************************************************************ - * 'ratio' functions - ************************************************************************/ - -/* 'normalize' a ratio (remove common factors) */ -void y4m_ratio_reduce(y4m_ratio_t *r); - -/* parse "nnn:ddd" into a ratio (returns Y4M_OK or Y4M_ERR_RANGE) */ -int y4m_parse_ratio(y4m_ratio_t *r, const char *s); - -/* quick test of two ratios for equality (i.e. identical components) */ -#define Y4M_RATIO_EQL(a,b) ( ((a).n == (b).n) && ((a).d == (b).d) ) - -/* quick conversion of a ratio to a double (no divide-by-zero check!) */ -#define Y4M_RATIO_DBL(r) ((double)(r).n / (double)(r).d) - -/************************************************************************* - * - * Guess the true SAR (sample aspect ratio) from a list of commonly - * encountered values, given the "suggested" display aspect ratio (DAR), - * and the true frame width and height. - * - * Returns y4m_sar_UNKNOWN if no match is found. - * - *************************************************************************/ -y4m_ratio_t y4m_guess_sar(int width, int height, y4m_ratio_t dar); - - - -/************************************************************************ - * 'xtag' functions - * - * o Before using an xtag_list (but after the structure/memory has been - * allocated), you must initialize it via y4m_init_xtag_list(). - * o After using an xtag_list (but before the structure is released), - * call y4m_fini_xtag_list() to free internal memory. - * - ************************************************************************/ - -/* initialize an xtag_list structure */ -void y4m_init_xtag_list(y4m_xtag_list_t *xtags); - -/* finalize an xtag_list structure */ -void y4m_fini_xtag_list(y4m_xtag_list_t *xtags); - -/* make one xtag_list into a copy of another */ -void y4m_copy_xtag_list(y4m_xtag_list_t *dest, const y4m_xtag_list_t *src); - -/* return number of tags in an xtag_list */ -int y4m_xtag_count(const y4m_xtag_list_t *xtags); - -/* access n'th tag in an xtag_list */ -const char *y4m_xtag_get(const y4m_xtag_list_t *xtags, int n); - -/* append a new tag to an xtag_list - returns: Y4M_OK - success - Y4M_ERR_XXTAGS - list is already full */ -int y4m_xtag_add(y4m_xtag_list_t *xtags, const char *tag); - -/* remove a tag from an xtag_list - returns: Y4M_OK - success - Y4M_ERR_RANGE - n is out of range */ -int y4m_xtag_remove(y4m_xtag_list_t *xtags, int n); - -/* remove all tags from an xtag_list - returns: Y4M_OK - success */ -int y4m_xtag_clearlist(y4m_xtag_list_t *xtags); - -/* append copies of tags from src list to dest list - returns: Y4M_OK - success - Y4M_ERR_XXTAGS - operation would overfill dest list */ -int y4m_xtag_addlist(y4m_xtag_list_t *dest, const y4m_xtag_list_t *src); - - - -/************************************************************************ - * '*_info' functions - * - * o Before using a *_info structure (but after the structure/memory has - * been allocated), you must initialize it via y4m_init_*_info(). - * o After using a *_info structure (but before the structure is released), - * call y4m_fini_*_info() to free internal memory. - * o Use the 'set' and 'get' accessors to modify or access the fields in - * the structures; don't touch the structure directly. (Ok, so there - * is no really convenient C syntax to prevent you from doing this, - * but we are all responsible programmers here, so just don't do it!) - * - ************************************************************************/ - -/* initialize a stream_info structure */ -void y4m_init_stream_info(y4m_stream_info_t *i); - -/* finalize a stream_info structure */ -void y4m_fini_stream_info(y4m_stream_info_t *i); - -/* make one stream_info into a copy of another */ -void y4m_copy_stream_info(y4m_stream_info_t *dest, - const y4m_stream_info_t *src); - -/* access or set stream_info fields */ -void y4m_si_set_width(y4m_stream_info_t *si, int width); -int y4m_si_get_width(const y4m_stream_info_t *si); -void y4m_si_set_height(y4m_stream_info_t *si, int height); -int y4m_si_get_height(const y4m_stream_info_t *si); -void y4m_si_set_interlace(y4m_stream_info_t *si, int interlace); -int y4m_si_get_interlace(const y4m_stream_info_t *si); -void y4m_si_set_framerate(y4m_stream_info_t *si, y4m_ratio_t framerate); -y4m_ratio_t y4m_si_get_framerate(const y4m_stream_info_t *si); -void y4m_si_set_sampleaspect(y4m_stream_info_t *si, y4m_ratio_t sar); -y4m_ratio_t y4m_si_get_sampleaspect(const y4m_stream_info_t *si); -int y4m_si_get_framelength(const y4m_stream_info_t *si); - -/* access stream_info xtag_list */ -y4m_xtag_list_t *y4m_si_xtags(y4m_stream_info_t *si); - - -/* initialize a frame_info structure */ -void y4m_init_frame_info(y4m_frame_info_t *i); - -/* finalize a frame_info structure */ -void y4m_fini_frame_info(y4m_frame_info_t *i); - -/* make one frame_info into a copy of another */ -void y4m_copy_frame_info(y4m_frame_info_t *dest, - const y4m_frame_info_t *src); - -/* access frame_info xtag_list */ -y4m_xtag_list_t *y4m_fi_xtags(y4m_frame_info_t *fi); - - - -/************************************************************************ - * blocking read and write functions - * - * o guaranteed to transfer entire payload (or fail) - * o return values: - * 0 (zero) complete success - * -(# of remaining bytes) error (and errno left set) - * +(# of remaining bytes) EOF (for y4m_read only) - * - ************************************************************************/ - -/* read len bytes from fd into buf */ -ssize_t y4m_read(int fd, void *buf, size_t len); - -/* write len bytes from fd into buf */ -ssize_t y4m_write(int fd, const void *buf, size_t len); - - - -/************************************************************************ - * stream header processing functions - * - * o return values: - * Y4M_OK - success - * Y4M_ERR_* - error (see y4m_strerr() for descriptions) - * - ************************************************************************/ - -/* parse a string of stream header tags */ -int y4m_parse_stream_tags(char *s, y4m_stream_info_t *i); - -/* read a stream header from file descriptor fd */ -int y4m_read_stream_header(int fd, y4m_stream_info_t *i); - -/* write a stream header to file descriptor fd */ -int y4m_write_stream_header(int fd, const y4m_stream_info_t *i); - - - -/************************************************************************ - * frame processing functions - * - * o return values: - * Y4M_OK - success - * Y4M_ERR_* - error (see y4m_strerr() for descriptions) - * - ************************************************************************/ - -/* read a frame header from file descriptor fd */ -int y4m_read_frame_header(int fd, y4m_frame_info_t *i); - -/* write a frame header to file descriptor fd */ -int y4m_write_frame_header(int fd, const y4m_frame_info_t *i); - -/* read a complete frame (header + data) - o yuv[3] points to three buffers, one each for Y, U, V planes */ -int y4m_read_frame(int fd, const y4m_stream_info_t *si, - y4m_frame_info_t *fi, uint8_t * const yuv[3]); - -/* write a complete frame (header + data) - o yuv[3] points to three buffers, one each for Y, U, V planes */ -int y4m_write_frame(int fd, const y4m_stream_info_t *si, - const y4m_frame_info_t *fi, uint8_t * const yuv[3]); - - -/* read a complete frame (header + data), but de-interleave fields - into two separate buffers - o upper_field[3] same as yuv[3] above, but for upper field - o lower_field[3] same as yuv[3] above, but for lower field -*/ -int y4m_read_fields(int fd, const y4m_stream_info_t *si, - y4m_frame_info_t *fi, - uint8_t * const upper_field[3], - uint8_t * const lower_field[3]); - -/* write a complete frame (header + data), but interleave fields - from two separate buffers - o upper_field[3] same as yuv[3] above, but for upper field - o lower_field[3] same as yuv[3] above, but for lower field -*/ -int y4m_write_fields(int fd, const y4m_stream_info_t *si, - const y4m_frame_info_t *fi, - uint8_t * const upper_field[3], - uint8_t * const lower_field[3]); - - - -/************************************************************************ - * miscellaneous functions - ************************************************************************/ - -/* convenient dump of stream header info via mjpeg_log facility - * - each logged/printed line is prefixed by 'prefix' - */ -void y4m_log_stream_info(log_level_t level, const char *prefix, - const y4m_stream_info_t *i); - -/* convert a Y4M_ERR_* error code into mildly explanatory string */ -const char *y4m_strerr(int err); - -/* set 'allow_unknown_tag' flag for library... - o yn = 0 : unknown header tags will produce a parsing error - o yn = 1 : unknown header tags/values will produce a warning, but - are otherwise passed along via the xtags list - o yn = -1: don't change, just return current setting - - return value: previous setting of flag -*/ -int y4m_allow_unknown_tags(int yn); - - -#ifdef __cplusplus -} -#endif - -/************************************************************************ - ************************************************************************ - - Description of the (new!, forever?) YUV4MPEG2 stream format: - - STREAM consists of - o one '\n' terminated STREAM-HEADER - o unlimited number of FRAMEs - - FRAME consists of - o one '\n' terminated FRAME-HEADER - o "length" octets of planar YCrCb 4:2:0 image data - (if frame is interlaced, then the two fields are interleaved) - - - STREAM-HEADER consists of - o string "YUV4MPEG2 " (note the space after the '2') - o unlimited number of ' ' separated TAGGED-FIELDs - o '\n' line terminator - - FRAME-HEADER consists of - o string "FRAME " (note the space after the 'E') - o unlimited number of ' ' separated TAGGED-FIELDs - o '\n' line terminator - - - TAGGED-FIELD consists of - o single ascii character tag - o VALUE (which does not contain whitespace) - - VALUE consists of - o integer (base 10 ascii representation) - or o RATIO - or o single ascii character - or o generic ascii string - - RATIO consists of - o numerator (integer) - o ':' (a colon) - o denominator (integer) - - - The currently supported tags for the STREAM-HEADER: - W - [integer] frame width, pixels, should be > 0 - H - [integer] frame height, pixels, should be > 0 - I - [char] interlacing: p - progressive (none) - t - top-field-first - b - bottom-field-first - ? - unknown - F - [ratio] frame-rate, 0:0 == unknown - A - [ratio] sample (pixel) aspect ratio, 0:0 == unknown - X - [character string] 'metadata' (unparsed, but passed around) - - The currently supported tags for the FRAME-HEADER: - X - character string 'metadata' (unparsed, but passed around) - - ************************************************************************ - ************************************************************************/ - -#endif /* __YUV4MPEG_H__ */ - - |