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-rw-r--r--ext/mplex/yuv4mpeg.cc880
1 files changed, 0 insertions, 880 deletions
diff --git a/ext/mplex/yuv4mpeg.cc b/ext/mplex/yuv4mpeg.cc
deleted file mode 100644
index a9e1aebf..00000000
--- a/ext/mplex/yuv4mpeg.cc
+++ /dev/null
@@ -1,880 +0,0 @@
-/*
- * yuv4mpeg.c: Functions for reading and writing "new" YUV4MPEG streams
- *
- * 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.
- *
- */
-
-#include <config.h>
-
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include "yuv4mpeg.h"
-#include "yuv4mpeg_intern.h"
-#include "mjpeg_logging.h"
-
-
-static int _y4mparam_allow_unknown_tags = 1; /* default is forgiveness */
-
-static void *(*_y4m_alloc) (size_t bytes) = malloc;
-static void (*_y4m_free) (void *ptr) = free;
-
-
-
-int
-y4m_allow_unknown_tags (int yn)
-{
- int old = _y4mparam_allow_unknown_tags;
-
- if (yn >= 0)
- _y4mparam_allow_unknown_tags = (yn) ? 1 : 0;
- return old;
-}
-
-
-
-/*************************************************************************
- *
- * Convenience functions for fd read/write
- *
- * - guaranteed to transfer entire payload (or fail)
- * - returns:
- * 0 on complete success
- * +(# of remaining bytes) on eof (for y4m_read)
- * -(# of rem. bytes) on error (and ERRNO should be set)
- *
- *************************************************************************/
-
-
-ssize_t
-y4m_read (int fd, void *buf, size_t len)
-{
- ssize_t n;
- uint8_t *ptr = (uint8_t *) buf;
-
- while (len > 0) {
- n = read (fd, ptr, len);
- if (n <= 0) {
- /* return amount left to read */
- if (n == 0)
- return len; /* n == 0 --> eof */
- else
- return -len; /* n < 0 --> error */
- }
- ptr += n;
- len -= n;
- }
- return 0;
-}
-
-
-ssize_t
-y4m_write (int fd, const void *buf, size_t len)
-{
- ssize_t n;
- const uint8_t *ptr = (const uint8_t *) buf;
-
- while (len > 0) {
- n = write (fd, ptr, len);
- if (n <= 0)
- return -len; /* return amount left to write */
- ptr += n;
- len -= n;
- }
- return 0;
-}
-
-
-
-/*************************************************************************
- *
- * "Extra tags" handling
- *
- *************************************************************************/
-
-
-static char *
-y4m_new_xtag (void)
-{
- return (char *) _y4m_alloc (Y4M_MAX_XTAG_SIZE * sizeof (char));
-}
-
-
-void
-y4m_init_xtag_list (y4m_xtag_list_t * xtags)
-{
- int i;
-
- xtags->count = 0;
- for (i = 0; i < Y4M_MAX_XTAGS; i++) {
- xtags->tags[i] = NULL;
- }
-}
-
-
-void
-y4m_fini_xtag_list (y4m_xtag_list_t * xtags)
-{
- int i;
-
- for (i = 0; i < Y4M_MAX_XTAGS; i++) {
- if (xtags->tags[i] != NULL) {
- _y4m_free (xtags->tags[i]);
- xtags->tags[i] = NULL;
- }
- }
- xtags->count = 0;
-}
-
-
-void
-y4m_copy_xtag_list (y4m_xtag_list_t * dest, const y4m_xtag_list_t * src)
-{
- int i;
-
- for (i = 0; i < src->count; i++) {
- if (dest->tags[i] == NULL)
- dest->tags[i] = y4m_new_xtag ();
- strncpy (dest->tags[i], src->tags[i], Y4M_MAX_XTAG_SIZE);
- }
- dest->count = src->count;
-}
-
-
-
-static int
-y4m_snprint_xtags (char *s, int maxn, const y4m_xtag_list_t * xtags)
-{
- int i, room;
-
- for (i = 0, room = maxn - 1; i < xtags->count; i++) {
- int n = snprintf (s, room + 1, " %s", xtags->tags[i]);
-
- if ((n < 0) || (n > room))
- return Y4M_ERR_HEADER;
- s += n;
- room -= n;
- }
- s[0] = '\n'; /* finish off header with newline */
- s[1] = '\0'; /* ...and end-of-string */
- return Y4M_OK;
-}
-
-
-int
-y4m_xtag_count (const y4m_xtag_list_t * xtags)
-{
- return xtags->count;
-}
-
-
-const char *
-y4m_xtag_get (const y4m_xtag_list_t * xtags, int n)
-{
- if (n >= xtags->count)
- return NULL;
- else
- return xtags->tags[n];
-}
-
-
-int
-y4m_xtag_add (y4m_xtag_list_t * xtags, const char *tag)
-{
- if (xtags->count >= Y4M_MAX_XTAGS)
- return Y4M_ERR_XXTAGS;
- if (xtags->tags[xtags->count] == NULL)
- xtags->tags[xtags->count] = y4m_new_xtag ();
- strncpy (xtags->tags[xtags->count], tag, Y4M_MAX_XTAG_SIZE);
- (xtags->count)++;
- return Y4M_OK;
-}
-
-
-int
-y4m_xtag_remove (y4m_xtag_list_t * xtags, int n)
-{
- int i;
- char *q;
-
- if ((n < 0) || (n >= xtags->count))
- return Y4M_ERR_RANGE;
- q = xtags->tags[n];
- for (i = n; i < (xtags->count - 1); i++)
- xtags->tags[i] = xtags->tags[i + 1];
- xtags->tags[i] = q;
- (xtags->count)--;
- return Y4M_OK;
-}
-
-
-int
-y4m_xtag_clearlist (y4m_xtag_list_t * xtags)
-{
- xtags->count = 0;
- return Y4M_OK;
-}
-
-
-int
-y4m_xtag_addlist (y4m_xtag_list_t * dest, const y4m_xtag_list_t * src)
-{
- int i, j;
-
- if ((dest->count + src->count) > Y4M_MAX_XTAGS)
- return Y4M_ERR_XXTAGS;
- for (i = dest->count, j = 0; j < src->count; i++, j++) {
- if (dest->tags[i] == NULL)
- dest->tags[i] = y4m_new_xtag ();
- strncpy (dest->tags[i], src->tags[i], Y4M_MAX_XTAG_SIZE);
- }
- dest->count += src->count;
- return Y4M_OK;
-}
-
-
-/*************************************************************************
- *
- * Creators/destructors for y4m_*_info_t structures
- *
- *************************************************************************/
-
-
-void
-y4m_init_stream_info (y4m_stream_info_t * info)
-{
- if (info == NULL)
- return;
- /* initialize info */
- info->width = Y4M_UNKNOWN;
- info->height = Y4M_UNKNOWN;
- info->interlace = Y4M_UNKNOWN;
- info->framerate = y4m_fps_UNKNOWN;
- info->sampleaspect = y4m_sar_UNKNOWN;
- y4m_init_xtag_list (&(info->x_tags));
-}
-
-
-void
-y4m_copy_stream_info (y4m_stream_info_t * dest, const y4m_stream_info_t * src)
-{
- if ((dest == NULL) || (src == NULL))
- return;
- /* copy info */
- dest->width = src->width;
- dest->height = src->height;
- dest->interlace = src->interlace;
- dest->framerate = src->framerate;
- dest->sampleaspect = src->sampleaspect;
- dest->framelength = src->framelength;
- y4m_copy_xtag_list (&(dest->x_tags), &(src->x_tags));
-}
-
-
-void
-y4m_fini_stream_info (y4m_stream_info_t * info)
-{
- if (info == NULL)
- return;
- y4m_fini_xtag_list (&(info->x_tags));
-}
-
-
-void
-y4m_si_set_width (y4m_stream_info_t * si, int width)
-{
- si->width = width;
- si->framelength = (si->height * si->width) * 3 / 2;
-}
-
-int
-y4m_si_get_width (const y4m_stream_info_t * si)
-{
- return si->width;
-}
-
-void
-y4m_si_set_height (y4m_stream_info_t * si, int height)
-{
- si->height = height;
- si->framelength = (si->height * si->width) * 3 / 2;
-}
-
-int
-y4m_si_get_height (const y4m_stream_info_t * si)
-{
- return si->height;
-}
-
-void
-y4m_si_set_interlace (y4m_stream_info_t * si, int interlace)
-{
- si->interlace = interlace;
-}
-
-int
-y4m_si_get_interlace (const y4m_stream_info_t * si)
-{
- return si->interlace;
-}
-
-void
-y4m_si_set_framerate (y4m_stream_info_t * si, y4m_ratio_t framerate)
-{
- si->framerate = framerate;
-}
-
-y4m_ratio_t
-y4m_si_get_framerate (const y4m_stream_info_t * si)
-{
- return si->framerate;
-}
-
-void
-y4m_si_set_sampleaspect (y4m_stream_info_t * si, y4m_ratio_t sar)
-{
- si->sampleaspect = sar;
-}
-
-y4m_ratio_t
-y4m_si_get_sampleaspect (const y4m_stream_info_t * si)
-{
- return si->sampleaspect;
-}
-
-int
-y4m_si_get_framelength (const y4m_stream_info_t * si)
-{
- return si->framelength;
-}
-
-y4m_xtag_list_t *
-y4m_si_xtags (y4m_stream_info_t * si)
-{
- return &(si->x_tags);
-}
-
-
-
-void
-y4m_init_frame_info (y4m_frame_info_t * info)
-{
- if (info == NULL)
- return;
- /* initialize info */
- y4m_init_xtag_list (&(info->x_tags));
-}
-
-
-void
-y4m_copy_frame_info (y4m_frame_info_t * dest, const y4m_frame_info_t * src)
-{
- if ((dest == NULL) || (src == NULL))
- return;
- /* copy info */
- y4m_copy_xtag_list (&(dest->x_tags), &(src->x_tags));
-}
-
-
-void
-y4m_fini_frame_info (y4m_frame_info_t * info)
-{
- if (info == NULL)
- return;
- y4m_fini_xtag_list (&(info->x_tags));
-}
-
-
-
-/*************************************************************************
- *
- * Tag parsing
- *
- *************************************************************************/
-
-int
-y4m_parse_stream_tags (char *s, y4m_stream_info_t * i)
-{
- char *token, *value;
- char tag;
- int err;
-
- /* parse fields */
- for (token = strtok (s, Y4M_DELIM); token != NULL; token = strtok (NULL, Y4M_DELIM)) {
- if (token[0] == '\0')
- continue; /* skip empty strings */
- tag = token[0];
- value = token + 1;
- switch (tag) {
- case 'W': /* width */
- i->width = atoi (value);
- if (i->width <= 0)
- return Y4M_ERR_RANGE;
- break;
- case 'H': /* height */
- i->height = atoi (value);
- if (i->height <= 0)
- return Y4M_ERR_RANGE;
- break;
- case 'F': /* frame rate (fps) */
- if ((err = y4m_parse_ratio (&(i->framerate), value)) != Y4M_OK)
- return err;
- if (i->framerate.n < 0)
- return Y4M_ERR_RANGE;
- break;
- case 'I': /* interlacing */
- switch (value[0]) {
- case 'p':
- i->interlace = Y4M_ILACE_NONE;
- break;
- case 't':
- i->interlace = Y4M_ILACE_TOP_FIRST;
- break;
- case 'b':
- i->interlace = Y4M_ILACE_BOTTOM_FIRST;
- break;
- case '?':
- default:
- i->interlace = Y4M_UNKNOWN;
- break;
- }
- break;
- case 'A': /* sample (pixel) aspect ratio */
- if ((err = y4m_parse_ratio (&(i->sampleaspect), value)) != Y4M_OK)
- return err;
- if (i->sampleaspect.n < 0)
- return Y4M_ERR_RANGE;
- break;
- case 'X': /* 'X' meta-tag */
- if ((err = y4m_xtag_add (&(i->x_tags), token)) != Y4M_OK)
- return err;
- break;
- default:
- /* possible error on unknown options */
- if (_y4mparam_allow_unknown_tags) {
- /* unknown tags ok: store in xtag list and warn... */
- if ((err = y4m_xtag_add (&(i->x_tags), token)) != Y4M_OK)
- return err;
- mjpeg_warn ("Unknown stream tag encountered: '%s'", token);
- } else {
- /* unknown tags are *not* ok */
- return Y4M_ERR_BADTAG;
- }
- break;
- }
- }
- /* Error checking... width and height must be known since we can't
- * parse without them
- */
- if (i->width == Y4M_UNKNOWN || i->height == Y4M_UNKNOWN)
- return Y4M_ERR_HEADER;
- /* ta da! done. */
- return Y4M_OK;
-}
-
-
-
-static int
-y4m_parse_frame_tags (char *s, y4m_frame_info_t * i)
-{
- char *token, *value;
- char tag;
- int err;
-
- /* parse fields */
- for (token = strtok (s, Y4M_DELIM); token != NULL; token = strtok (NULL, Y4M_DELIM)) {
- if (token[0] == '\0')
- continue; /* skip empty strings */
- tag = token[0];
- value = token + 1;
- switch (tag) {
- case 'X': /* 'X' meta-tag */
- if ((err = y4m_xtag_add (&(i->x_tags), token)) != Y4M_OK)
- return err;
- break;
- default:
- /* possible error on unknown options */
- if (_y4mparam_allow_unknown_tags) {
- /* unknown tags ok: store in xtag list and warn... */
- if ((err = y4m_xtag_add (&(i->x_tags), token)) != Y4M_OK)
- return err;
- mjpeg_warn ("Unknown frame tag encountered: '%s'", token);
- } else {
- /* unknown tags are *not* ok */
- return Y4M_ERR_BADTAG;
- }
- break;
- }
- }
- /* ta da! done. */
- return Y4M_OK;
-}
-
-
-
-
-
-/*************************************************************************
- *
- * Read/Write stream header
- *
- *************************************************************************/
-
-
-int
-y4m_read_stream_header (int fd, y4m_stream_info_t * i)
-{
- char line[Y4M_LINE_MAX];
- char *p;
- int n;
- int err;
-
- /* read the header line */
- for (n = 0, p = line; n < Y4M_LINE_MAX; n++, p++) {
- if (read (fd, p, 1) < 1)
- return Y4M_ERR_SYSTEM;
- if (*p == '\n') {
- *p = '\0'; /* Replace linefeed by end of string */
- break;
- }
- }
- if (n >= Y4M_LINE_MAX)
- return Y4M_ERR_HEADER;
- /* look for keyword in header */
- if (strncmp (line, Y4M_MAGIC, strlen (Y4M_MAGIC)))
- return Y4M_ERR_MAGIC;
- if ((err = y4m_parse_stream_tags (line + strlen (Y4M_MAGIC), i)) != Y4M_OK)
- return err;
-
- i->framelength = (i->height * i->width) * 3 / 2;
- return Y4M_OK;
-}
-
-
-
-int
-y4m_write_stream_header (int fd, const y4m_stream_info_t * i)
-{
- char s[Y4M_LINE_MAX + 1];
- int n;
- int err;
- y4m_ratio_t rate = i->framerate;
- y4m_ratio_t aspect = i->sampleaspect;
-
- y4m_ratio_reduce (&rate);
- y4m_ratio_reduce (&aspect);
- n = snprintf (s, sizeof (s), "%s W%d H%d F%d:%d I%s A%d:%d",
- Y4M_MAGIC,
- i->width,
- i->height,
- rate.n, rate.d,
- (i->interlace == Y4M_ILACE_NONE) ? "p" :
- (i->interlace == Y4M_ILACE_TOP_FIRST) ? "t" :
- (i->interlace == Y4M_ILACE_BOTTOM_FIRST) ? "b" : "?", aspect.n, aspect.d);
- if ((n < 0) || (n > Y4M_LINE_MAX))
- return Y4M_ERR_HEADER;
- if ((err = y4m_snprint_xtags (s + n, sizeof (s) - n - 1, &(i->x_tags)))
- != Y4M_OK)
- return err;
- /* non-zero on error */
- return (y4m_write (fd, s, strlen (s)) ? Y4M_ERR_SYSTEM : Y4M_OK);
-}
-
-
-
-
-
-/*************************************************************************
- *
- * Read/Write frame header
- *
- *************************************************************************/
-
-int
-y4m_read_frame_header (int fd, y4m_frame_info_t * i)
-{
- char line[Y4M_LINE_MAX];
- char *p;
- int n;
- ssize_t remain;
-
- /* This is more clever than read_stream_header...
- Try to read "FRAME\n" all at once, and don't try to parse
- if nothing else is there...
- */
- remain = y4m_read (fd, line, sizeof (Y4M_FRAME_MAGIC) - 1 + 1); /* -'\0', +'\n' */
- if (remain < 0)
- return Y4M_ERR_SYSTEM;
- if (remain > 0) {
- /* A clean EOF should end exactly at a frame-boundary */
- if (remain == sizeof (Y4M_FRAME_MAGIC))
- return Y4M_ERR_EOF;
- else
- return Y4M_ERR_BADEOF;
- }
- if (strncmp (line, Y4M_FRAME_MAGIC, sizeof (Y4M_FRAME_MAGIC) - 1))
- return Y4M_ERR_MAGIC;
- if (line[sizeof (Y4M_FRAME_MAGIC) - 1] == '\n')
- return Y4M_OK; /* done -- no tags: that was the end-of-line. */
-
- if (line[sizeof (Y4M_FRAME_MAGIC) - 1] != Y4M_DELIM[0]) {
- return Y4M_ERR_MAGIC; /* wasn't a space -- what was it? */
- }
-
- /* proceed to get the tags... (overwrite the magic) */
- for (n = 0, p = line; n < Y4M_LINE_MAX; n++, p++) {
- if (y4m_read (fd, p, 1))
- return Y4M_ERR_SYSTEM;
- if (*p == '\n') {
- *p = '\0'; /* Replace linefeed by end of string */
- break;
- }
- }
- if (n >= Y4M_LINE_MAX)
- return Y4M_ERR_HEADER;
- /* non-zero on error */
- return y4m_parse_frame_tags (line, i);
-}
-
-
-int
-y4m_write_frame_header (int fd, const y4m_frame_info_t * i)
-{
- char s[Y4M_LINE_MAX + 1];
- int n;
- int err;
-
- n = snprintf (s, sizeof (s), "%s", Y4M_FRAME_MAGIC);
- if ((n < 0) || (n > Y4M_LINE_MAX))
- return Y4M_ERR_HEADER;
- if ((err = y4m_snprint_xtags (s + n, sizeof (s) - n - 1, &(i->x_tags)))
- != Y4M_OK)
- return err;
- /* non-zero on error */
- return (y4m_write (fd, s, strlen (s)) ? Y4M_ERR_SYSTEM : Y4M_OK);
-}
-
-
-
-/*************************************************************************
- *
- * Read/Write entire frame
- *
- *************************************************************************/
-
-int
-y4m_read_frame (int fd, const y4m_stream_info_t * si, y4m_frame_info_t * fi, uint8_t * const yuv[3])
-{
- int err;
- int w = si->width;
- int h = si->height;
-
- /* Read frame header */
- if ((err = y4m_read_frame_header (fd, fi)) != Y4M_OK)
- return err;
- /* Read luminance scanlines */
- if (y4m_read (fd, yuv[0], w * h))
- return Y4M_ERR_SYSTEM;
- /* Read chrominance scanlines */
- if (y4m_read (fd, yuv[1], w * h / 4))
- return Y4M_ERR_SYSTEM;
- if (y4m_read (fd, yuv[2], w * h / 4))
- return Y4M_ERR_SYSTEM;
-
- return Y4M_OK;
-}
-
-
-
-
-int
-y4m_write_frame (int fd, const y4m_stream_info_t * si,
- const y4m_frame_info_t * fi, uint8_t * const yuv[3])
-{
- int err;
- int w = si->width;
- int h = si->height;
-
- /* Write frame header */
- if ((err = y4m_write_frame_header (fd, fi)) != Y4M_OK)
- return err;
- /* Write luminance,chrominance scanlines */
- if (y4m_write (fd, yuv[0], w * h) ||
- y4m_write (fd, yuv[1], w * h / 4) || y4m_write (fd, yuv[2], w * h / 4))
- return Y4M_ERR_SYSTEM;
- return Y4M_OK;
-}
-
-
-
-/*************************************************************************
- *
- * Read/Write entire frame, (de)interleaved (to)from two separate fields
- *
- *************************************************************************/
-
-
-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])
-{
- int i, y, err;
- int width = si->width;
- int height = si->height;
-
- /* Read frame header */
- if ((err = y4m_read_frame_header (fd, fi)) != Y4M_OK)
- return err;
- /* Read Y', Cb, and Cr planes */
- for (i = 0; i < 3; i++) {
- uint8_t *srctop = upper_field[i];
- uint8_t *srcbot = lower_field[i];
-
- /* alternately write one line from each */
- for (y = 0; y < height; y += 2) {
- if (y4m_read (fd, srctop, width))
- return Y4M_ERR_SYSTEM;
- srctop += width;
- if (y4m_read (fd, srcbot, width))
- return Y4M_ERR_SYSTEM;
- srcbot += width;
- }
- /* for chroma, width/height are half as big */
- if (i == 0) {
- width /= 2;
- height /= 2;
- }
- }
- return Y4M_OK;
-}
-
-
-
-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])
-{
- int i, y, err;
- int width = si->width;
- int height = si->height;
-
- /* Write frame header */
- if ((err = y4m_write_frame_header (fd, fi)) != Y4M_OK)
- return err;
- /* Write Y', Cb, and Cr planes */
- for (i = 0; i < 3; i++) {
- uint8_t *srctop = upper_field[i];
- uint8_t *srcbot = lower_field[i];
-
- /* alternately write one line from each */
- for (y = 0; y < height; y += 2) {
- if (y4m_write (fd, srctop, width))
- return Y4M_ERR_SYSTEM;
- srctop += width;
- if (y4m_write (fd, srcbot, width))
- return Y4M_ERR_SYSTEM;
- srcbot += width;
- }
- /* for chroma, width/height are half as big */
- if (i == 0) {
- width /= 2;
- height /= 2;
- }
- }
- return Y4M_OK;
-}
-
-
-
-/*************************************************************************
- *
- * Handy logging of stream info
- *
- *************************************************************************/
-
-void
-y4m_log_stream_info (log_level_t level, const char *prefix, const y4m_stream_info_t * i)
-{
- char s[256];
-
- snprintf (s, sizeof (s), " frame size: ");
- if (i->width == Y4M_UNKNOWN)
- snprintf (s + strlen (s), sizeof (s) - strlen (s), "(?)x");
- else
- snprintf (s + strlen (s), sizeof (s) - strlen (s), "%dx", i->width);
- if (i->height == Y4M_UNKNOWN)
- snprintf (s + strlen (s), sizeof (s) - strlen (s), "(?) pixels ");
- else
- snprintf (s + strlen (s), sizeof (s) - strlen (s), "%d pixels ", i->height);
- if (i->framelength == Y4M_UNKNOWN)
- snprintf (s + strlen (s), sizeof (s) - strlen (s), "(? bytes)");
- else
- snprintf (s + strlen (s), sizeof (s) - strlen (s), "(%d bytes)", i->framelength);
- mjpeg_log (level, "%s%s", prefix, s);
- if ((i->framerate.n == 0) && (i->framerate.d == 0))
- mjpeg_log (level, "%s frame rate: ??? fps", prefix);
- else
- mjpeg_log (level, "%s frame rate: %d/%d fps (~%f)", prefix,
- i->framerate.n, i->framerate.d, (double) i->framerate.n / (double) i->framerate.d);
- mjpeg_log (level, "%s interlace: %s", prefix,
- (i->interlace == Y4M_ILACE_NONE) ? "none/progressive" :
- (i->interlace == Y4M_ILACE_TOP_FIRST) ? "top-field-first" :
- (i->interlace == Y4M_ILACE_BOTTOM_FIRST) ? "bottom-field-first" : "anyone's guess");
- if ((i->sampleaspect.n == 0) && (i->sampleaspect.d == 0))
- mjpeg_log (level, "%ssample aspect ratio: ?:?", prefix);
- else
- mjpeg_log (level, "%ssample aspect ratio: %d:%d", prefix,
- i->sampleaspect.n, i->sampleaspect.d);
-}
-
-
-/*************************************************************************
- *
- * Convert error code to string
- *
- *************************************************************************/
-
-const char *
-y4m_strerr (int err)
-{
- switch (err) {
- case Y4M_OK:
- return "no error";
- case Y4M_ERR_RANGE:
- return "parameter out of range";
- case Y4M_ERR_SYSTEM:
- return "system error (failed read/write)";
- case Y4M_ERR_HEADER:
- return "bad stream or frame header";
- case Y4M_ERR_BADTAG:
- return "unknown header tag";
- case Y4M_ERR_MAGIC:
- return "bad header magic";
- case Y4M_ERR_XXTAGS:
- return "too many xtags";
- case Y4M_ERR_EOF:
- return "end-of-file";
- case Y4M_ERR_BADEOF:
- return "stream ended unexpectedly (EOF)";
- default:
- return "unknown error code";
- }
-}
generated by cgit v1.2.1 (git 2.18.0) at 2024-06-30 03:57:22 +0000