Implement functions:

av_get_sample_fmt_name()
av_get_sample_fmt()
av_get_sample_fmt_string()

in libavcore, and deprecate the corresponding libavcodec/audioconvert.h functions:
avcodec_get_sample_fmt_name()
avcodec_get_sample_fmt()
avcodec_sample_fmt_string()

Originally committed as revision 25653 to svn://svn.ffmpeg.org/ffmpeg/trunk

doc/APIchanges

@@ -13,6 +13,16 @@ libavutil:   2009-03-08
 
 API changes, most recent first:
 
+2010-11-02 - r25653 - lavcore 0.11.0 - samplefmt.h
+  Add sample format functions in libavcore/samplefmt.h:
+  av_get_sample_fmt_name(),
+  av_get_sample_fmt(),
+  av_get_sample_fmt_string(),
+  and deprecate the corresponding libavcodec/audioconvert.h functions:
+  avcodec_get_sample_fmt_name(),
+  avcodec_get_sample_fmt(),
+  avcodec_sample_fmt_string().
+
 2010-11-02 - r25652 - lavcore 0.10.0 - samplefmt.h
   Define enum AVSampleFormat in libavcore/samplefmt.h, deprecate enum
   SampleFormat.

libavcodec/audioconvert.c

@@ -27,50 +27,26 @@
 
 #include "libavutil/avstring.h"
 #include "libavutil/libm.h"
+#include "libavcore/samplefmt.h"
 #include "avcodec.h"
 #include "audioconvert.h"
 
-typedef struct SampleFmtInfo {
-    const char *name;
-    int bits;
-} SampleFmtInfo;
-
-/** this table gives more information about formats */
-static const SampleFmtInfo sample_fmt_info[SAMPLE_FMT_NB] = {
-    [SAMPLE_FMT_U8]  = { .name = "u8",  .bits = 8 },
-    [SAMPLE_FMT_S16] = { .name = "s16", .bits = 16 },
-    [SAMPLE_FMT_S32] = { .name = "s32", .bits = 32 },
-    [SAMPLE_FMT_FLT] = { .name = "flt", .bits = 32 },
-    [SAMPLE_FMT_DBL] = { .name = "dbl", .bits = 64 },
-};
-
+#if FF_API_OLD_SAMPLE_FMT
 const char *avcodec_get_sample_fmt_name(int sample_fmt)
 {
-    if (sample_fmt < 0 || sample_fmt >= SAMPLE_FMT_NB)
-        return NULL;
-    return sample_fmt_info[sample_fmt].name;
+    return av_get_sample_fmt_name(sample_fmt);
 }
 
 enum SampleFormat avcodec_get_sample_fmt(const char* name)
 {
-    int i;
-
-    for (i=0; i < SAMPLE_FMT_NB; i++)
-        if (!strcmp(sample_fmt_info[i].name, name))
-            return i;
-    return SAMPLE_FMT_NONE;
+    return av_get_sample_fmt(name);
 }
 
 void avcodec_sample_fmt_string (char *buf, int buf_size, int sample_fmt)
 {
-    /* print header */
-    if (sample_fmt < 0)
-        snprintf (buf, buf_size, "name  " " depth");
-    else if (sample_fmt < SAMPLE_FMT_NB) {
-        SampleFmtInfo info= sample_fmt_info[sample_fmt];
-        snprintf (buf, buf_size, "%-6s" "   %2d ", info.name, info.bits);
-    }
+    av_get_sample_fmt_string(buf, buf_size, sample_fmt);
 }
+#endif
 
 static const char* const channel_names[]={
     "FL", "FR", "FC", "LFE", "BL",  "BR",  "FLC", "FRC",

libavcodec/audioconvert.h

@@ -32,28 +32,25 @@
 #include "libavutil/cpu.h"
 #include "avcodec.h"
 
-
+#if FF_API_OLD_SAMPLE_FMT
 /**
- * Generate string corresponding to the sample format with
- * number sample_fmt, or a header if sample_fmt is negative.
- *
- * @param[in] buf the buffer where to write the string
- * @param[in] buf_size the size of buf
- * @param[in] sample_fmt the number of the sample format to print the corresponding info string, or
- * a negative value to print the corresponding header.
- * Meaningful values for obtaining a sample format info vary from 0 to SAMPLE_FMT_NB -1.
+ * @deprecated Use av_get_sample_fmt_string() instead.
  */
+attribute_deprecated
 void avcodec_sample_fmt_string(char *buf, int buf_size, int sample_fmt);
 
 /**
- * @return NULL on error
+ * @deprecated Use av_get_sample_fmt_name() instead.
  */
+attribute_deprecated
 const char *avcodec_get_sample_fmt_name(int sample_fmt);
 
 /**
- * @return SAMPLE_FMT_NONE on error
+ * @deprecated Use av_get_sample_fmt() instead.
  */
+attribute_deprecated
 enum SampleFormat avcodec_get_sample_fmt(const char* name);
+#endif
 
 /**
  * @return NULL on error

libavcodec/avcodec.h

@@ -33,7 +33,7 @@
 
 #define LIBAVCODEC_VERSION_MAJOR 52
 #define LIBAVCODEC_VERSION_MINOR 94
-#define LIBAVCODEC_VERSION_MICRO  1
+#define LIBAVCODEC_VERSION_MICRO  2
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \

libavcore/Makefile

@@ -10,6 +10,7 @@ HEADERS = avcore.h                                                      \
 
 OBJS = imgutils.o                                                       \
        parseutils.o                                                     \
+       samplefmt.o                                                      \
        utils.o                                                          \
 
 include $(SUBDIR)../subdir.mak

libavcore/avcore.h

@@ -27,7 +27,7 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVCORE_VERSION_MAJOR  0
-#define LIBAVCORE_VERSION_MINOR 10
+#define LIBAVCORE_VERSION_MINOR 11
 #define LIBAVCORE_VERSION_MICRO  0
 
 #define LIBAVCORE_VERSION_INT   AV_VERSION_INT(LIBAVCORE_VERSION_MAJOR, \

libavcore/samplefmt.c

@@ -0,0 +1,64 @@
+/*
+ * 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
+ */
+
+#include "avcore.h"
+#include "samplefmt.h"
+
+typedef struct SampleFmtInfo {
+    const char *name;
+    int bits;
+} SampleFmtInfo;
+
+/** this table gives more information about formats */
+static const SampleFmtInfo sample_fmt_info[AV_SAMPLE_FMT_NB] = {
+    [AV_SAMPLE_FMT_U8]  = { .name = "u8",  .bits = 8 },
+    [AV_SAMPLE_FMT_S16] = { .name = "s16", .bits = 16 },
+    [AV_SAMPLE_FMT_S32] = { .name = "s32", .bits = 32 },
+    [AV_SAMPLE_FMT_FLT] = { .name = "flt", .bits = 32 },
+    [AV_SAMPLE_FMT_DBL] = { .name = "dbl", .bits = 64 },
+};
+
+const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)
+{
+    if (sample_fmt < 0 || sample_fmt >= AV_SAMPLE_FMT_NB)
+        return NULL;
+    return sample_fmt_info[sample_fmt].name;
+}
+
+enum AVSampleFormat av_get_sample_fmt(const char *name)
+{
+    int i;
+
+    for (i = 0; i < AV_SAMPLE_FMT_NB; i++)
+        if (!strcmp(sample_fmt_info[i].name, name))
+            return i;
+    return AV_SAMPLE_FMT_NONE;
+}
+
+char *av_get_sample_fmt_string (char *buf, int buf_size, enum AVSampleFormat sample_fmt)
+{
+    /* print header */
+    if (sample_fmt < 0)
+        snprintf(buf, buf_size, "name  " " depth");
+    else if (sample_fmt < AV_SAMPLE_FMT_NB) {
+        SampleFmtInfo info = sample_fmt_info[sample_fmt];
+        snprintf (buf, buf_size, "%-6s" "   %2d ", info.name, info.bits);
+    }
+
+    return buf;
+}

libavcore/samplefmt.h

@@ -32,4 +32,30 @@ enum AVSampleFormat {
     AV_SAMPLE_FMT_NB           ///< Number of sample formats. DO NOT USE if dynamically linking to libavcore
 };
 
+/**
+ * Return the name of sample_fmt, or NULL if sample_fmt is not
+ * recognized.
+ */
+const char *av_get_sample_fmt_name(enum AVSampleFormat sample_fmt);
+
+/**
+ * Return a sample format corresponding to name, or AV_SAMPLE_FMT_NONE
+ * on error.
+ */
+enum AVSampleFormat av_get_sample_fmt(const char *name);
+
+/**
+ * Generate a string corresponding to the sample format with
+ * sample_fmt, or a header if sample_fmt is negative.
+ *
+ * @param buf the buffer where to write the string
+ * @param buf_size the size of buf
+ * @param sample_fmt the number of the sample format to print the
+ * corresponding info string, or a negative value to print the
+ * corresponding header.
+ * @return the pointer to the filled buffer or NULL if sample_fmt is
+ * unknown or in case of other errors
+ */
+char *av_get_sample_fmt_string(char *buf, int buf_size, enum AVSampleFormat sample_fmt);
+
 #endif /* AVCORE_SAMPLEFMT_H */