/*
* Filter layer - format negotiation
- * copyright (c) 2007 Bobby Bingham
+ * Copyright (c) 2007 Bobby Bingham
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include "libavutil/pixdesc.h"
#include "avfilter.h"
+/**
+ * Add all refs from a to ret and destroy a.
+ */
+static void merge_ref(AVFilterFormats *ret, AVFilterFormats *a)
+{
+ int i;
+
+ for(i = 0; i < a->refcount; i ++) {
+ ret->refs[ret->refcount] = a->refs[i];
+ *ret->refs[ret->refcount++] = ret;
+ }
+
+ av_free(a->refs);
+ av_free(a->formats);
+ av_free(a);
+}
+
AVFilterFormats *avfilter_merge_formats(AVFilterFormats *a, AVFilterFormats *b)
{
AVFilterFormats *ret;
ret = av_mallocz(sizeof(AVFilterFormats));
/* merge list of formats */
- ret->formats = av_malloc(sizeof(int) * FFMIN(a->format_count,
- b->format_count));
+ 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])
ret->formats[k++] = a->formats[i];
+ ret->format_count = k;
/* check that there was at least one common format */
- if(!(ret->format_count = k)) {
+ if(!ret->format_count) {
av_free(ret->formats);
av_free(ret);
return NULL;
}
- /* merge and update all the references */
ret->refs = av_malloc(sizeof(AVFilterFormats**)*(a->refcount+b->refcount));
- for(i = 0; i < a->refcount; i ++) {
- ret->refs[ret->refcount] = a->refs[i];
- *ret->refs[ret->refcount++] = ret;
- }
- for(i = 0; i < b->refcount; i ++) {
- ret->refs[ret->refcount] = b->refs[i];
- *ret->refs[ret->refcount++] = ret;
- }
-
- av_free(a->refs);
- av_free(a->formats);
- av_free(a);
- av_free(b->refs);
- av_free(b->formats);
- av_free(b);
+ merge_ref(ret, a);
+ merge_ref(ret, b);
return ret;
}
-AVFilterFormats *avfilter_make_format_list(int len, ...)
+AVFilterFormats *avfilter_make_format_list(const int *fmts)
{
- AVFilterFormats *ret;
- int i;
- va_list vl;
+ AVFilterFormats *formats;
+ int count;
- ret = av_mallocz(sizeof(AVFilterFormats));
- ret->formats = av_malloc(sizeof(int) * len);
- ret->format_count = len;
+ for (count = 0; fmts[count] != -1; count++)
+ ;
- va_start(vl, len);
- for(i = 0; i < len; i ++)
- ret->formats[i] = va_arg(vl, int);
- va_end(vl);
+ 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);
- return ret;
+ return formats;
+}
+
+int avfilter_add_format(AVFilterFormats **avff, int fmt)
+{
+ int *fmts;
+
+ if (!(*avff) && !(*avff = av_mallocz(sizeof(AVFilterFormats))))
+ return AVERROR(ENOMEM);
+
+ fmts = av_realloc((*avff)->formats,
+ sizeof((*avff)->formats) * ((*avff)->format_count+1));
+ if (!fmts)
+ return AVERROR(ENOMEM);
+
+ (*avff)->formats = fmts;
+ (*avff)->formats[(*avff)->format_count++] = fmt;
+ return 0;
}
-AVFilterFormats *avfilter_all_colorspaces(void)
+AVFilterFormats *avfilter_all_formats(enum AVMediaType type)
{
- return avfilter_make_format_list(31,
- PIX_FMT_YUV444P, PIX_FMT_YUV422P, PIX_FMT_YUV420P,
- PIX_FMT_YUV411P, PIX_FMT_YUV410P,
- PIX_FMT_YUYV422, PIX_FMT_UYVY422, PIX_FMT_UYYVYY411,
- PIX_FMT_YUVJ444P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ420P,
- PIX_FMT_YUV440P, PIX_FMT_YUVJ440P,
- PIX_FMT_RGB32, PIX_FMT_BGR32,
- PIX_FMT_RGB32_1, PIX_FMT_BGR32_1,
- PIX_FMT_RGB24, PIX_FMT_BGR24,
- PIX_FMT_RGB565, PIX_FMT_BGR565,
- PIX_FMT_RGB555, PIX_FMT_BGR555,
- PIX_FMT_RGB8, PIX_FMT_BGR8,
- PIX_FMT_RGB4_BYTE,PIX_FMT_BGR4_BYTE,
- PIX_FMT_GRAY16BE, PIX_FMT_GRAY16LE,
- PIX_FMT_GRAY8, PIX_FMT_PAL8);
+ AVFilterFormats *ret = NULL;
+ int fmt;
+ int num_formats = type == AVMEDIA_TYPE_VIDEO ? PIX_FMT_NB :
+ type == AVMEDIA_TYPE_AUDIO ? AV_SAMPLE_FMT_NB : 0;
+
+ for (fmt = 0; fmt < num_formats; fmt++)
+ if ((type != AVMEDIA_TYPE_VIDEO) ||
+ (type == AVMEDIA_TYPE_VIDEO && !(av_pix_fmt_descriptors[fmt].flags & PIX_FMT_HWACCEL)))
+ avfilter_add_format(&ret, fmt);
+
+ return ret;
}
void avfilter_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
f->refs[f->refcount-1] = ref;
}
-static int find_ref_index(AVFilterFormats *f, AVFilterFormats **ref)
+static int find_ref_index(AVFilterFormats **ref)
{
int i;
for(i = 0; i < (*ref)->refcount; i ++)
{
int idx;
- if((idx = find_ref_index(*ref, ref)) >= 0)
+ if (!*ref)
+ return;
+
+ idx = find_ref_index(ref);
+
+ if(idx >= 0)
memmove((*ref)->refs + idx, (*ref)->refs + idx+1,
sizeof(AVFilterFormats**) * ((*ref)->refcount-idx-1));
*ref = NULL;
}
+void avfilter_formats_changeref(AVFilterFormats **oldref,
+ AVFilterFormats **newref)
+{
+ int idx = find_ref_index(oldref);
+
+ if(idx >= 0) {
+ (*oldref)->refs[idx] = newref;
+ *newref = *oldref;
+ *oldref = NULL;
+ }
+}
+
projects / ffmpeg / blobdiff