/*
  * Copyright (c) 2013 Georg Martius <georg dot martius at web dot de>
  *
  * 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 "vidstabutils.h"
 
 /** convert AV's pixelformat to vid.stab pixelformat */

 VSPixelFormat ff_av2vs_pixfmt(AVFilterContext *ctx, enum AVPixelFormat pf)

 {
     switch (pf) {

     case AV_PIX_FMT_YUV420P:  return PF_YUV420P;
     case AV_PIX_FMT_YUV422P:  return PF_YUV422P;
     case AV_PIX_FMT_YUV444P:  return PF_YUV444P;
     case AV_PIX_FMT_YUV410P:  return PF_YUV410P;
     case AV_PIX_FMT_YUV411P:  return PF_YUV411P;
     case AV_PIX_FMT_YUV440P:  return PF_YUV440P;
     case AV_PIX_FMT_YUVA420P: return PF_YUVA420P;
     case AV_PIX_FMT_GRAY8:    return PF_GRAY8;
     case AV_PIX_FMT_RGB24:    return PF_RGB24;
     case AV_PIX_FMT_BGR24:    return PF_BGR24;
     case AV_PIX_FMT_RGBA:     return PF_RGBA;
     default:
         av_log(ctx, AV_LOG_ERROR, "cannot deal with pixel format %i\n", pf);
         return PF_NONE;
     }
 }
 
 /** struct to hold a valid context for logging from within vid.stab lib */

 typedef struct VS2AVLogCtx {

     const AVClass *class;

 } VS2AVLogCtx;
 
 /** wrapper to log vs_log into av_log */

 static int vs2av_log(int type, const char *tag, const char *format, ...)

 {

     va_list ap;
     VS2AVLogCtx ctx;
     AVClass class = {

         .class_name = tag,
         .item_name  = av_default_item_name,
         .option     = 0,
         .version    = LIBAVUTIL_VERSION_INT,
         .category   = AV_CLASS_CATEGORY_FILTER,

     };
     ctx.class = &class;

     va_start(ap, format);

     av_vlog(&ctx, type, format, ap);

     va_end(ap);

     return VS_OK;
 }
 
 /** sets the memory allocation function and logging constants to av versions */

 void ff_vs_init(void)

 {

     vs_malloc  = av_malloc;
     vs_zalloc  = av_mallocz;
     vs_realloc = av_realloc;
     vs_free    = av_free;
 
     VS_ERROR_TYPE = AV_LOG_ERROR;
     VS_WARN_TYPE  = AV_LOG_WARNING;
     VS_INFO_TYPE  = AV_LOG_INFO;
     VS_MSG_TYPE   = AV_LOG_VERBOSE;
 

     vs_log   = vs2av_log;

 
     VS_ERROR = 0;
     VS_OK    = 1;
 }