src/image_load_ffmpegthumbnailer.c

   1 /*
   2  * Copyright (C) 2004 John Ellis
   3  * Copyright (C) 2008 - 2016 The Geeqie Team
   4  *
   5  * Author: Tomasz Golinski <tomaszg@math.uwb.edu.pl>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "main.h"
  23 #include "image-load.h"
  24 #include "image_load_ffmpegthumbnailer.h"
  25
  26 #ifdef HAVE_FFMPEGTHUMBNAILER
  27 #include <libffmpegthumbnailer/videothumbnailerc.h>
  28
  29 typedef struct _ImageLoaderFT ImageLoaderFT;
  30 struct _ImageLoaderFT {
  31         ImageLoaderBackendCbAreaUpdated area_updated_cb;
  32         ImageLoaderBackendCbSize size_cb;
  33         ImageLoaderBackendCbAreaPrepared area_prepared_cb;
  34
  35         video_thumbnailer *vt;
  36
  37         gpointer data;
  38
  39         GdkPixbuf *pixbuf;
  40         guint requested_width;
  41         guint requested_height;
  42
  43 };
  44
  45 #if HAVE_FFMPEGTHUMBNAILER_RGB
  46 static void image_loader_ft_log_cb(ThumbnailerLogLevel log_level, const char* msg)
  47 {
  48         if (log_level == ThumbnailerLogLevelError)
  49                 log_printf("ImageLoaderFFmpegthumbnailer: %s",msg);
  50         else
  51                 DEBUG_1("ImageLoaderFFmpegthumbnailer: %s",msg);
  52 }
  53 #endif
  54
  55 void image_loader_ft_destroy_image_data(guchar *pixels, gpointer data)
  56 {
  57         image_data *image = (image_data *) data;
  58
  59         video_thumbnailer_destroy_image_data (image);
  60 }
  61
  62 static gchar* image_loader_ft_get_format_name(gpointer loader)
  63 {
  64         return g_strdup("ffmpeg");
  65 }
  66
  67 static gchar** image_loader_ft_get_format_mime_types(gpointer loader)
  68 {
  69         static gchar *mime[] = {"video/mp4", NULL};
  70         return g_strdupv(mime);}
  71
  72 static gpointer image_loader_ft_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
  73 {
  74         ImageLoaderFT *loader = g_new0(ImageLoaderFT, 1);
  75
  76         loader->area_updated_cb = area_updated_cb;
  77         loader->size_cb = size_cb;
  78         loader->area_prepared_cb = area_prepared_cb;
  79         loader->data = data;
  80
  81         loader->vt = video_thumbnailer_create();
  82         loader->vt->overlay_film_strip = 1;
  83         loader->vt->maintain_aspect_ratio = 1;
  84 #if HAVE_FFMPEGTHUMBNAILER_RGB
  85         video_thumbnailer_set_log_callback(loader->vt, image_loader_ft_log_cb);
  86 #endif
  87
  88         return (gpointer) loader;
  89 }
  90
  91 static void image_loader_ft_set_size(gpointer loader, int width, int height)
  92 {
  93         ImageLoaderFT *lft = (ImageLoaderFT *) loader;
  94         lft->requested_width = width;
  95         lft->requested_height = height;
  96         DEBUG_1("TG: setting size, w=%d, h=%d", width, height);
  97 }
  98
  99 // static gboolean image_loader_ft_loadfromdisk(gpointer loader, const gchar *path, GError **error)
 100 static gboolean image_loader_ft_load (gpointer loader, const guchar *buf, gsize count, GError **error)
 101 {
 102         ImageLoaderFT *lft = (ImageLoaderFT *) loader;
 103         ImageLoader *il = lft->data;
 104
 105         image_data *image = video_thumbnailer_create_image_data();
 106
 107 #ifdef HAVE_FFMPEGTHUMBNAILER_WH
 108 //      DEBUG_1("TG: FT requested size w=%d:h=%d for %s", lft->requested_width > 0, lft->requested_height, il->fd->path);
 109         video_thumbnailer_set_size(lft->vt, lft->requested_width, lft->requested_height);
 110 #else
 111         lft->vt->thumbnail_size = MAX(lft->requested_width,lft->requested_width);
 112 #endif
 113
 114 #ifdef HAVE_FFMPEGTHUMBNAILER_METADATA
 115         lft->vt->prefer_embedded_metadata = options->thumbnails.use_ft_metadata ? 1 : 0;
 116 #endif
 117
 118 #if HAVE_FFMPEGTHUMBNAILER_RGB
 119         lft->vt->thumbnail_image_type = Rgb;
 120 #else
 121         lft->vt->thumbnail_image_type = Png;
 122 #endif
 123
 124         video_thumbnailer_generate_thumbnail_to_buffer (lft->vt, il->fd->path, image);
 125
 126 #if HAVE_FFMPEGTHUMBNAILER_RGB
 127         lft->pixbuf  = gdk_pixbuf_new_from_data (image->image_data_ptr, GDK_COLORSPACE_RGB, FALSE, 8, image->image_data_width, image->image_data_height,  image->image_data_width*3, image_loader_ft_destroy_image_data, image);
 128         lft->size_cb(loader, image->image_data_width, image->image_data_height, lft->data);
 129         lft->area_updated_cb(loader, 0, 0, image->image_data_width, image->image_data_height, lft->data);
 130 #else
 131         GInputStream *image_stream;
 132         image_stream = g_memory_input_stream_new_from_data (image->image_data_ptr, image->image_data_size, NULL);
 133
 134         if (image_stream == NULL)
 135         {
 136         video_thumbnailer_destroy_image_data (image);
 137         DEBUG_1("FFmpegthumbnailer: cannot open stream for %s", il->fd->path);
 138         return FALSE;
 139     }
 140
 141         lft->pixbuf  = gdk_pixbuf_new_from_stream (image_stream, NULL, NULL);
 142         lft->size_cb(loader, gdk_pixbuf_get_width(lft->pixbuf), gdk_pixbuf_get_height(lft->pixbuf), lft->data);
 143         g_object_unref (image_stream);
 144         video_thumbnailer_destroy_image_data (image);
 145 #endif
 146
 147         if (!lft->pixbuf)
 148                 {
 149                 DEBUG_1("FFmpegthumbnailer: no frame generated for %s", il->fd->path);
 150                 return FALSE;
 151                 }
 152
 153 /* See comment in image_loader_area_prepared_cb
 154  * Geeqie uses area_prepared signal to fill pixbuf with background color.
 155  * We can't do it here as pixbuf already contains the data */
 156 //      lft->area_prepared_cb(loader, lft->data);
 157
 158         lft->area_updated_cb(loader, 0, 0, gdk_pixbuf_get_width(lft->pixbuf), gdk_pixbuf_get_height(lft->pixbuf), lft->data);
 159
 160         return TRUE;
 161 }
 162
 163 static GdkPixbuf* image_loader_ft_get_pixbuf(gpointer loader)
 164 {
 165         ImageLoaderFT *lft = (ImageLoaderFT *) loader;
 166         return lft->pixbuf;
 167 }
 168
 169 static void image_loader_ft_abort(gpointer loader)
 170 {
 171 }
 172
 173 static gboolean image_loader_ft_close(gpointer loader, GError **error)
 174 {
 175         return TRUE;
 176 }
 177
 178 static void image_loader_ft_free(gpointer loader)
 179 {
 180         ImageLoaderFT *lft = (ImageLoaderFT *) loader;
 181         if (lft->pixbuf) g_object_unref(lft->pixbuf);
 182         video_thumbnailer_destroy (lft->vt);
 183
 184         g_free(lft);
 185 }
 186
 187 void image_loader_backend_set_ft(ImageLoaderBackend *funcs)
 188 {
 189         funcs->loader_new = image_loader_ft_new;
 190         funcs->set_size = image_loader_ft_set_size;
 191         funcs->load = image_loader_ft_load;
 192         funcs->write = NULL;
 193         funcs->get_pixbuf = image_loader_ft_get_pixbuf;
 194         funcs->close = image_loader_ft_close;
 195         funcs->abort = image_loader_ft_abort;
 196         funcs->free = image_loader_ft_free;
 197
 198         funcs->get_format_name = image_loader_ft_get_format_name;
 199         funcs->get_format_mime_types = image_loader_ft_get_format_mime_types;
 200 }
 201
 202 #endif
 203 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */