Mercurial > libavcore.hg

changeset 1:d2641c727ec5 libavcore

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Deprecate av_parse_video_frame_size() and av_parse_video_frame_rate() in favor of the newly added corresponding functions av_parse_video_size() and av_parse_video_rate() defined in libavcore/parseutils.h. This change also adds a linking-time dependency of libavcodec and of libavfilter on libavcore.
author stefano
date Mon, 26 Jul 2010 23:12:28 +0000
parents a644213e4818
children b7595fe2d4a4
files Makefile avcore.h parseutils.c parseutils.h
diffstat 4 files changed, 207 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/Makefile	Wed Jul 21 18:28:42 2010 +0000
+++ b/Makefile	Mon Jul 26 23:12:28 2010 +0000
@@ -3,7 +3,9 @@
 NAME = avcore
 
 HEADERS = avcore.h                                                      \
+          parseutils.h                                                  \
 
-OBJS = utils.o                                                          \
+OBJS = parseutils.o                                                     \
+       utils.o                                                          \
 
 include $(SUBDIR)../subdir.mak
--- a/avcore.h	Wed Jul 21 18:28:42 2010 +0000
+++ b/avcore.h	Mon Jul 26 23:12:28 2010 +0000
@@ -27,7 +27,7 @@
 #include <libavutil/avutil.h>
 
 #define LIBAVCORE_VERSION_MAJOR  0
-#define LIBAVCORE_VERSION_MINOR  0
+#define LIBAVCORE_VERSION_MINOR  1
 #define LIBAVCORE_VERSION_MICRO  0
 
 #define LIBAVCORE_VERSION_INT   AV_VERSION_INT(LIBAVCORE_VERSION_MAJOR, \
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parseutils.c	Mon Jul 26 23:12:28 2010 +0000
@@ -0,0 +1,150 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * misc parsing utilities for libavcore
+ */
+
+#include "parseutils.h"
+#include "libavutil/avutil.h"
+
+typedef struct {
+    const char *abbr;
+    int width, height;
+} VideoFrameSizeAbbr;
+
+typedef struct {
+    const char *abbr;
+    int rate_num, rate_den;
+} VideoFrameRateAbbr;
+
+static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {
+    { "ntsc",      720, 480 },
+    { "pal",       720, 576 },
+    { "qntsc",     352, 240 }, /* VCD compliant NTSC */
+    { "qpal",      352, 288 }, /* VCD compliant PAL */
+    { "sntsc",     640, 480 }, /* square pixel NTSC */
+    { "spal",      768, 576 }, /* square pixel PAL */
+    { "film",      352, 240 },
+    { "ntsc-film", 352, 240 },
+    { "sqcif",     128,  96 },
+    { "qcif",      176, 144 },
+    { "cif",       352, 288 },
+    { "4cif",      704, 576 },
+    { "16cif",    1408,1152 },
+    { "qqvga",     160, 120 },
+    { "qvga",      320, 240 },
+    { "vga",       640, 480 },
+    { "svga",      800, 600 },
+    { "xga",      1024, 768 },
+    { "uxga",     1600,1200 },
+    { "qxga",     2048,1536 },
+    { "sxga",     1280,1024 },
+    { "qsxga",    2560,2048 },
+    { "hsxga",    5120,4096 },
+    { "wvga",      852, 480 },
+    { "wxga",     1366, 768 },
+    { "wsxga",    1600,1024 },
+    { "wuxga",    1920,1200 },
+    { "woxga",    2560,1600 },
+    { "wqsxga",   3200,2048 },
+    { "wquxga",   3840,2400 },
+    { "whsxga",   6400,4096 },
+    { "whuxga",   7680,4800 },
+    { "cga",       320, 200 },
+    { "ega",       640, 350 },
+    { "hd480",     852, 480 },
+    { "hd720",    1280, 720 },
+    { "hd1080",   1920,1080 },
+};
+
+static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {
+    { "ntsc",      30000, 1001 },
+    { "pal",          25,    1 },
+    { "qntsc",     30000, 1001 }, /* VCD compliant NTSC */
+    { "qpal",         25,    1 }, /* VCD compliant PAL */
+    { "sntsc",     30000, 1001 }, /* square pixel NTSC */
+    { "spal",         25,    1 }, /* square pixel PAL */
+    { "film",         24,    1 },
+    { "ntsc-film", 24000, 1001 },
+};
+
+int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str)
+{
+    int i;
+    int n = FF_ARRAY_ELEMS(video_frame_size_abbrs);
+    char *p;
+    int frame_width = 0, frame_height = 0;
+
+    for (i = 0; i < n; i++) {
+        if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
+            frame_width = video_frame_size_abbrs[i].width;
+            frame_height = video_frame_size_abbrs[i].height;
+            break;
+        }
+    }
+    if (i == n) {
+        p = str;
+        frame_width = strtol(p, &p, 10);
+        if (*p)
+            p++;
+        frame_height = strtol(p, &p, 10);
+    }
+    if (frame_width <= 0 || frame_height <= 0)
+        return -1;
+    *width_ptr  = frame_width;
+    *height_ptr = frame_height;
+    return 0;
+}
+
+int av_parse_video_rate(AVRational *frame_rate, const char *arg)
+{
+    int i;
+    int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs);
+    char *cp;
+
+    /* First, we check our abbreviation table */
+    for (i = 0; i < n; ++i)
+         if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
+             frame_rate->num = video_frame_rate_abbrs[i].rate_num;
+             frame_rate->den = video_frame_rate_abbrs[i].rate_den;
+             return 0;
+         }
+
+    /* Then, we try to parse it as fraction */
+    cp = strchr(arg, '/');
+    if (!cp)
+        cp = strchr(arg, ':');
+    if (cp) {
+        char *cpp;
+        frame_rate->num = strtol(arg, &cpp, 10);
+        if (cpp != arg || cpp == cp)
+            frame_rate->den = strtol(cp+1, &cpp, 10);
+        else
+            frame_rate->num = 0;
+    } else {
+        /* Finally we give up and parse it as double */
+        AVRational time_base = av_d2q(strtod(arg, 0), 1001000);
+        frame_rate->den = time_base.den;
+        frame_rate->num = time_base.num;
+    }
+    if (frame_rate->num <= 0 || frame_rate->den <= 0)
+        return -1;
+    return 0;
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parseutils.h	Mon Jul 26 23:12:28 2010 +0000
@@ -0,0 +1,53 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCORE_PARSEUTILS_H
+#define AVCORE_PARSEUTILS_H
+
+#include <libavutil/rational.h>
+
+/**
+ * @file
+ * misc parsing utilities for libavcore
+ */
+
+/**
+ * Parse str and put in width_ptr and height_ptr the detected values.
+ *
+ * @param[in,out] width_ptr pointer to the variable which will contain the detected
+ * frame width value
+ * @param[in,out] height_ptr pointer to the variable which will contain the detected
+ * frame height value
+ * @param[in] str the string to parse: it has to be a string in the format
+ * width x height or a valid video frame size abbreviation.
+ * @return >= 0 on success, a negative error code otherwise
+ */
+int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str);
+
+/**
+ * Parse str and store the detected values in *frame_rate.
+ *
+ * @param[in,out] frame_rate pointer to the AVRational which will contain the detected
+ * frame rate
+ * @param[in] str the string to parse: it has to be a string in the format
+ * frame_rate_num / frame_rate_den, a float number or a valid video rate abbreviation
+ * @return >= 0 on success, a negative error code otherwise
+ */
+int av_parse_video_rate(AVRational *frame_rate, const char *str);
+
+#endif /* AVCORE_PARSEUTILS_H */