/*****************************************************************
 * gmerlin - a general purpose multimedia framework and applications
 *
 * Copyright (c) 2001 - 2024 Members of the Gmerlin project
 * http://github.com/bplaum
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * *****************************************************************/



#include <stdlib.h>
#include <string.h>
#include <stdio.h>

#include <config.h>
#include <gmerlin/translation.h>
#include <gmerlin/plugin.h>
#include <gmerlin/utils.h>
#include <gmerlin/log.h>

#define LOG_DOMAIN "fv_pixelformat"

typedef struct
  {
  gavl_pixelformat_t pixelformat;
  int need_restart;
  
  gavl_video_format_t format;

  bg_parameter_info_t * parameters;

  gavl_video_source_t * in_src;
  gavl_video_source_t * out_src;
  } pixelformat_priv_t;

static void * create_pixelformat()
  {
  pixelformat_priv_t * ret;
  ret = calloc(1, sizeof(*ret));
  return ret;
  }

static void destroy_pixelformat(void * priv)
  {
  pixelformat_priv_t * vp;
  vp = priv;
  if(vp->parameters)
    bg_parameter_info_destroy_array(vp->parameters);
  if(vp->out_src)
    gavl_video_source_destroy(vp->out_src);
  free(vp);
  }

static const bg_parameter_info_t parameters[] =
  {
    {
      .gettext_domain = PACKAGE,
      .gettext_directory = LOCALE_DIR,
      .name = "pixelformat",
      .long_name = TRS("Pixelformat"),
      .type = BG_PARAMETER_STRINGLIST,
      .flags = BG_PARAMETER_SYNC,
      .val_default = GAVL_VALUE_INIT_STRING("yuv420p8"),
    },
    { /* End of parameters */ },
  };

static bg_parameter_info_t * create_parameters()
  {
  int i, index, num;
  bg_parameter_info_t * ret;
  gavl_pixelformat_t f;

  ret = bg_parameter_info_copy_array(parameters);

  num = gavl_num_pixelformats();

  ret->multi_names_nc  = calloc(num+1, sizeof(*ret->multi_names));
  ret->multi_labels_nc = calloc(num+1, sizeof(*ret->multi_labels));
  bg_parameter_info_set_const_ptrs(ret);
  index = 0;
  for(i = 0; i < num; i++)
    {
    f = gavl_get_pixelformat(i);
    if(f != GAVL_PIXELFORMAT_NONE)
      {
      ret->multi_names_nc[index] =
        gavl_strdup(gavl_pixelformat_to_short_string(f));
      ret->multi_labels_nc[index] =
        gavl_strdup(gavl_pixelformat_to_string(f));
      index++;
      }
    }
  
  return ret;
  }

static const bg_parameter_info_t * get_parameters_pixelformat(void * priv)
  {
  pixelformat_priv_t * vp;
  vp = priv;
  if(!vp->parameters)
    vp->parameters = create_parameters();
  return vp->parameters;
  }

static void
set_parameter_pixelformat(void * priv, const char * name,
                          const gavl_value_t * val)
  {
  pixelformat_priv_t * vp;
  gavl_pixelformat_t f;
  vp = priv;
  
  if(!name)
    return;
  
  if(!strcmp(name, "pixelformat"))
    {
    f = gavl_short_string_to_pixelformat(val->v.str);

    if(f == GAVL_PIXELFORMAT_NONE)
      {
      gavl_log(GAVL_LOG_ERROR, LOG_DOMAIN, "Unkown pixelformat: %s", val->v.str);
      return;
      }
    
    if(vp->pixelformat != f)
      {
      vp->need_restart = 1;
      vp->pixelformat = f;
      }
    }
  }

static int need_restart_pixelformat(void * priv)
  {
  pixelformat_priv_t * vp;
  vp = priv;
  return vp->need_restart;
  }

static gavl_source_status_t
read_func(void * priv,
          gavl_video_frame_t ** frame)
  {
  pixelformat_priv_t * vp = priv;
  return gavl_video_source_read_frame(vp->in_src, frame);
  }

static gavl_video_source_t *
connect_pixelformat(void * priv,
                  gavl_video_source_t * src,
                  const gavl_video_options_t * opt)
  {
  const gavl_video_format_t * in_format;
  pixelformat_priv_t * vp = priv;
  
  vp->in_src = src;
  if(vp->out_src)
    gavl_video_source_destroy(vp->out_src);

  in_format = gavl_video_source_get_src_format(vp->in_src);

  /* Set framerate */

  gavl_video_format_copy(&vp->format, in_format);

  vp->format.pixelformat = vp->pixelformat;
  
  gavl_video_source_set_dst(vp->in_src, 0, &vp->format);

  vp->out_src =
    gavl_video_source_create_source(read_func,
                                    vp, 0,
                                    vp->in_src);
  return vp->out_src;
  }


const bg_fv_plugin_t the_plugin = 
  {
    .common =
    {
      BG_LOCALE,
      .name =      "fv_pixelformat",
      .long_name = TRS("Force pixelformat"),
      .description = TRS("Forces a pixelformat as input for the next filter. Its mainly used for testing."),
      .type =     BG_PLUGIN_FILTER_VIDEO,
      .flags =    BG_PLUGIN_FILTER_1,
      .create =   create_pixelformat,
      .destroy =   destroy_pixelformat,
      .get_parameters =   get_parameters_pixelformat,
      .set_parameter =    set_parameter_pixelformat,
      .priority =         1,
    },
    
    .connect = connect_pixelformat,
    .need_restart = need_restart_pixelformat,
    
  };

/* Include this into all plugin modules exactly once
   to let the plugin loader obtain the API version */
BG_GET_PLUGIN_API_VERSION;
