mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-18 23:35:06 +02:00
151 lines
4.4 KiB
C
151 lines
4.4 KiB
C
/*
|
|
* Filter layer - format negotiation
|
|
* copyright (c) 2007 Bobby Bingham
|
|
*
|
|
* 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 "avfilter.h"
|
|
|
|
AVFilterFormats *avfilter_merge_formats(AVFilterFormats *a, AVFilterFormats *b)
|
|
{
|
|
AVFilterFormats *ret;
|
|
unsigned i, j, k = 0;
|
|
|
|
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])
|
|
ret->formats[k++] = a->formats[i];
|
|
|
|
/* check that there was at least one common format */
|
|
if(!(ret->format_count = k)) {
|
|
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);
|
|
|
|
return ret;
|
|
}
|
|
|
|
AVFilterFormats *avfilter_make_format_list(int len, ...)
|
|
{
|
|
AVFilterFormats *ret;
|
|
int i;
|
|
va_list vl;
|
|
|
|
ret = av_mallocz(sizeof(AVFilterFormats));
|
|
ret->formats = av_malloc(sizeof(*ret->formats) * len);
|
|
ret->format_count = len;
|
|
|
|
va_start(vl, len);
|
|
for(i = 0; i < len; i ++)
|
|
ret->formats[i] = va_arg(vl, int);
|
|
va_end(vl);
|
|
|
|
return ret;
|
|
}
|
|
|
|
AVFilterFormats *avfilter_all_colorspaces(void)
|
|
{
|
|
return avfilter_make_format_list(35,
|
|
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,
|
|
PIX_FMT_MONOWHITE,PIX_FMT_MONOBLACK,
|
|
PIX_FMT_NV12, PIX_FMT_NV21);
|
|
}
|
|
|
|
void avfilter_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
|
|
{
|
|
*ref = f;
|
|
f->refs = av_realloc(f->refs, sizeof(AVFilterFormats**) * ++f->refcount);
|
|
f->refs[f->refcount-1] = ref;
|
|
}
|
|
|
|
static int find_ref_index(AVFilterFormats **ref)
|
|
{
|
|
int i;
|
|
for(i = 0; i < (*ref)->refcount; i ++)
|
|
if((*ref)->refs[i] == ref)
|
|
return i;
|
|
return -1;
|
|
}
|
|
|
|
void avfilter_formats_unref(AVFilterFormats **ref)
|
|
{
|
|
int idx;
|
|
|
|
if((idx = find_ref_index(ref)) >= 0)
|
|
memmove((*ref)->refs + idx, (*ref)->refs + idx+1,
|
|
sizeof(AVFilterFormats**) * ((*ref)->refcount-idx-1));
|
|
|
|
if(!--(*ref)->refcount) {
|
|
av_free((*ref)->formats);
|
|
av_free((*ref)->refs);
|
|
av_free(*ref);
|
|
}
|
|
*ref = NULL;
|
|
}
|
|
|
|
void avfilter_formats_changeref(AVFilterFormats **oldref,
|
|
AVFilterFormats **newref)
|
|
{
|
|
int idx;
|
|
|
|
if((idx = find_ref_index(oldref)) >= 0) {
|
|
(*oldref)->refs[idx] = newref;
|
|
*newref = *oldref;
|
|
*oldref = NULL;
|
|
}
|
|
}
|
|
|