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-rw-r--r--libavfilter/formats.c105
1 files changed, 80 insertions, 25 deletions
diff --git a/libavfilter/formats.c b/libavfilter/formats.c
index bb7b921552..b6e30e7ab4 100644
--- a/libavfilter/formats.c
+++ b/libavfilter/formats.c
@@ -2,25 +2,27 @@
* Filter layer - format negotiation
* Copyright (c) 2007 Bobby Bingham
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/pixdesc.h"
+#include "libavutil/audioconvert.h"
#include "avfilter.h"
+#include "internal.h"
/**
* Add all refs from a to ret and destroy a.
@@ -29,7 +31,7 @@ static void merge_ref(AVFilterFormats *ret, AVFilterFormats *a)
{
int i;
- for(i = 0; i < a->refcount; i ++) {
+ for (i = 0; i < a->refcount; i++) {
ret->refs[ret->refcount] = a->refs[i];
*ret->refs[ret->refcount++] = ret;
}
@@ -44,19 +46,21 @@ AVFilterFormats *avfilter_merge_formats(AVFilterFormats *a, AVFilterFormats *b)
AVFilterFormats *ret;
unsigned i, j, k = 0;
+ if (a == b) return a;
+
ret = av_mallocz(sizeof(AVFilterFormats));
/* merge list of formats */
ret->formats = av_malloc(sizeof(*ret->formats) * FFMIN(a->format_count,
b->format_count));
- for(i = 0; i < a->format_count; i ++)
- for(j = 0; j < b->format_count; j ++)
- if(a->formats[i] == b->formats[j])
+ for (i = 0; i < a->format_count; i++)
+ for (j = 0; j < b->format_count; j++)
+ if (a->formats[i] == b->formats[j])
ret->formats[k++] = a->formats[i];
ret->format_count = k;
/* check that there was at least one common format */
- if(!ret->format_count) {
+ if (!ret->format_count) {
av_free(ret->formats);
av_free(ret);
return NULL;
@@ -70,31 +74,61 @@ AVFilterFormats *avfilter_merge_formats(AVFilterFormats *a, AVFilterFormats *b)
return ret;
}
+int ff_fmt_is_in(int fmt, const int *fmts)
+{
+ const int *p;
+
+ for (p = fmts; *p != -1; p++) {
+ if (fmt == *p)
+ return 1;
+ }
+ return 0;
+}
+
+#define MAKE_FORMAT_LIST() \
+ AVFilterFormats *formats; \
+ int count = 0; \
+ if (fmts) \
+ for (count = 0; fmts[count] != -1; count++) \
+ ; \
+ formats = av_mallocz(sizeof(AVFilterFormats)); \
+ if (!formats) return NULL; \
+ formats->format_count = count; \
+ if (count) { \
+ formats->formats = av_malloc(sizeof(*formats->formats)*count); \
+ if (!formats->formats) { \
+ av_free(formats); \
+ return NULL; \
+ } \
+ }
+
AVFilterFormats *avfilter_make_format_list(const int *fmts)
{
- AVFilterFormats *formats;
- int count;
+ MAKE_FORMAT_LIST();
+ while (count--)
+ formats->formats[count] = fmts[count];
- for (count = 0; fmts[count] != -1; count++)
- ;
+ return formats;
+}
- formats = av_mallocz(sizeof(AVFilterFormats));
- formats->formats = av_malloc(sizeof(*formats->formats) * count);
- formats->format_count = count;
- memcpy(formats->formats, fmts, sizeof(*formats->formats) * count);
+AVFilterFormats *avfilter_make_format64_list(const int64_t *fmts)
+{
+ MAKE_FORMAT_LIST();
+ if (count)
+ memcpy(formats->formats, fmts, sizeof(*formats->formats) * count);
return formats;
}
-int avfilter_add_format(AVFilterFormats **avff, int fmt)
+int avfilter_add_format(AVFilterFormats **avff, int64_t fmt)
{
- int *fmts;
+ int64_t *fmts;
if (!(*avff) && !(*avff = av_mallocz(sizeof(AVFilterFormats))))
return AVERROR(ENOMEM);
fmts = av_realloc((*avff)->formats,
- sizeof((*avff)->formats) * ((*avff)->format_count+1));
+ sizeof(*(*avff)->formats) * ((*avff)->format_count+1));
if (!fmts)
return AVERROR(ENOMEM);
@@ -118,6 +152,27 @@ AVFilterFormats *avfilter_all_formats(enum AVMediaType type)
return ret;
}
+AVFilterFormats *avfilter_all_channel_layouts(void)
+{
+ static int64_t chlayouts[] = {
+ AV_CH_LAYOUT_MONO,
+ AV_CH_LAYOUT_STEREO,
+ AV_CH_LAYOUT_4POINT0,
+ AV_CH_LAYOUT_QUAD,
+ AV_CH_LAYOUT_5POINT0,
+ AV_CH_LAYOUT_5POINT0_BACK,
+ AV_CH_LAYOUT_5POINT1,
+ AV_CH_LAYOUT_5POINT1_BACK,
+ AV_CH_LAYOUT_5POINT1|AV_CH_LAYOUT_STEREO_DOWNMIX,
+ AV_CH_LAYOUT_7POINT1,
+ AV_CH_LAYOUT_7POINT1_WIDE,
+ AV_CH_LAYOUT_7POINT1|AV_CH_LAYOUT_STEREO_DOWNMIX,
+ -1,
+ };
+
+ return avfilter_make_format64_list(chlayouts);
+}
+
void avfilter_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
{
*ref = f;
@@ -128,8 +183,8 @@ void avfilter_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
static int find_ref_index(AVFilterFormats **ref)
{
int i;
- for(i = 0; i < (*ref)->refcount; i ++)
- if((*ref)->refs[i] == ref)
+ for (i = 0; i < (*ref)->refcount; i++)
+ if ((*ref)->refs[i] == ref)
return i;
return -1;
}
@@ -143,11 +198,11 @@ void avfilter_formats_unref(AVFilterFormats **ref)
idx = find_ref_index(ref);
- if(idx >= 0)
+ if (idx >= 0)
memmove((*ref)->refs + idx, (*ref)->refs + idx+1,
sizeof(AVFilterFormats**) * ((*ref)->refcount-idx-1));
- if(!--(*ref)->refcount) {
+ if (!--(*ref)->refcount) {
av_free((*ref)->formats);
av_free((*ref)->refs);
av_free(*ref);
@@ -160,7 +215,7 @@ void avfilter_formats_changeref(AVFilterFormats **oldref,
{
int idx = find_ref_index(oldref);
- if(idx >= 0) {
+ if (idx >= 0) {
(*oldref)->refs[idx] = newref;
*newref = *oldref;
*oldref = NULL;
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-16 03:33:43 +0000