From 391354656c045dd396c398261250acdda8fea37d Mon Sep 17 00:00:00 2001 From: Vitor Sessak Date: Sun, 10 Feb 2008 18:02:11 +0000 Subject: First libavfilter commit. Original log message: Forgot to add in the big colorspace commit Commited in SoC by Bobby Bingham Originally committed as revision 11891 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavfilter/formats.c | 121 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 121 insertions(+) create mode 100644 libavfilter/formats.c (limited to 'libavfilter/formats.c') diff --git a/libavfilter/formats.c b/libavfilter/formats.c new file mode 100644 index 0000000000..49a74c2cf0 --- /dev/null +++ b/libavfilter/formats.c @@ -0,0 +1,121 @@ +/* + * 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(int) * 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(int) * 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(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); +} + +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; +} + +void avfilter_formats_unref(AVFilterFormats **ref) +{ + if(!--(*ref)->refcount) { + av_free((*ref)->formats); + av_free((*ref)->refs); + av_free(*ref); + } + *ref = NULL; +} + -- cgit v1.2.3