Remove dead code

This was done with the help of callcatcher [1]. Only functions which
are statically known to be unused are removed.

Some unused functions are not removed yet, because they might be needed
in the near future (such as open_output_stream for the encode branch).

There is one user visible change: the --subcc option did nothing, and is
removed with this commit.

[1] http://www.skynet.ie/~caolan/Packages/callcatcher.html

1 files changed, 0 insertions, 452 deletions

diff --git a/libmpdemux/yuv4mpeg.h b/libmpdemux/yuv4mpeg.h
deleted file mode 100644
index 6e97662111..0000000000
--- a/libmpdemux/yuv4mpeg.h
+++ /dev/null
@@ -1,452 +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 file is part of the MJPEG Tools package (mjpeg.sourceforge.net).
- *  Ported to mplayer by Rik Snel <rsnel@cube.dyndns.org>
- *
- *  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#ifndef MPLAYER_YUV4MPEG_H
-#define MPLAYER_YUV4MPEG_H
-
-#include <stdlib.h>
-//#include "mp_msg.h"
-#include "stream/stream.h"
-
-
-
-/************************************************************************
- *  error codes returned by y4m_* functions
- ************************************************************************/
-#define Y4M_OK          0
-#define Y4M_ERR_RANGE   1
-#define Y4M_ERR_SYSTEM  2
-#define Y4M_ERR_HEADER  3
-#define Y4M_ERR_BADTAG  4
-#define Y4M_ERR_MAGIC   5
-#define Y4M_ERR_EOF     6
-#define Y4M_ERR_XXTAGS  7
-
-
-/* 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
- ************************************************************************/
-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           */
-
-
-/************************************************************************
- *  '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)
-
-
-
-/************************************************************************
- *  '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, 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(y4m_stream_info_t *si);
-void y4m_si_set_height(y4m_stream_info_t *si, int height);
-int y4m_si_get_height(y4m_stream_info_t *si);
-void y4m_si_set_interlace(y4m_stream_info_t *si, int interlace);
-int y4m_si_get_interlace(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(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(y4m_stream_info_t *si);
-int y4m_si_get_framelength(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, 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(stream_t *s, char *buf, size_t len);
-
-#if 0
-/* write len bytes from fd into buf */
-ssize_t y4m_write(int fd, char *buf, size_t len);
-#endif
-
-
-/************************************************************************
- *  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(stream_t *s, y4m_stream_info_t *i);
-
-#if 0
-/* write a stream header to file descriptor fd */
-int y4m_write_stream_header(int fd,  y4m_stream_info_t *i);
-#endif
-
-
-/************************************************************************
- *  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(stream_t *s, y4m_frame_info_t *i);
-
-#if 0
-/* write a frame header to file descriptor fd */
-int y4m_write_frame_header(int fd, y4m_frame_info_t *i);
-#endif
-
-/* read a complete frame (header + data)
-   o yuv[3] points to three buffers, one each for Y, U, V planes */
-int y4m_read_frame(stream_t *s, y4m_stream_info_t *si,
-		   y4m_frame_info_t *fi, unsigned char *yuv[3]);
-
-#if 0
-/* 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, y4m_stream_info_t *si,
-		    y4m_frame_info_t *fi, unsigned char *yuv[3]);
-#endif
-
-#if 0
-/* 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, y4m_stream_info_t *si, y4m_frame_info_t *fi,
-		    unsigned char *upper_field[3],
-		    unsigned char *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, y4m_stream_info_t *si, y4m_frame_info_t *fi,
-		     unsigned char *upper_field[3],
-		     unsigned char *lower_field[3]);
-
-#endif
-
-/************************************************************************
- *  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(const char *prefix, 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 /* MPLAYER_YUV4MPEG_H */