src/image-load-ffmpegthumbnailer.cc

   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 *UNUSED(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 UNUSED(loader))
  63 {
  64         return g_strdup("ffmpeg");
  65 }
  66
  67 static gchar** image_loader_ft_get_format_mime_types(gpointer UNUSED(loader))
  68 {
  69         static const gchar *mime[] = {"video/mp4", NULL};
  70         return g_strdupv(const_cast<gchar **>(mime));
  71 }
  72
  73 static gpointer image_loader_ft_new(ImageLoaderBackendCbAreaUpdated area_updated_cb, ImageLoaderBackendCbSize size_cb, ImageLoaderBackendCbAreaPrepared area_prepared_cb, gpointer data)
  74 {
  75         ImageLoaderFT *loader = g_new0(ImageLoaderFT, 1);
  76
  77         loader->area_updated_cb = area_updated_cb;
  78         loader->size_cb = size_cb;
  79         loader->area_prepared_cb = area_prepared_cb;
  80         loader->data = data;
  81
  82         loader->vt = video_thumbnailer_create();
  83         loader->vt->overlay_film_strip = 1;
  84         loader->vt->maintain_aspect_ratio = 1;
  85 #if HAVE_FFMPEGTHUMBNAILER_RGB
  86         video_thumbnailer_set_log_callback(loader->vt, image_loader_ft_log_cb);
  87 #endif
  88
  89         return (gpointer) loader;
  90 }
  91
  92 static void image_loader_ft_set_size(gpointer loader, int width, int height)
  93 {
  94         ImageLoaderFT *lft = (ImageLoaderFT *) loader;
  95         lft->requested_width = width;
  96         lft->requested_height = height;
  97         DEBUG_1("TG: setting size, w=%d, h=%d", width, height);
  98 }
  99
 100 // static gboolean image_loader_ft_loadfromdisk(gpointer loader, const gchar *path, GError **error)
 101 static gboolean image_loader_ft_load (gpointer loader, const guchar *UNUSED(buf), gsize UNUSED(count), GError **UNUSED(error))
 102 {
 103         ImageLoaderFT *lft = (ImageLoaderFT *) loader;
 104         ImageLoader *il = static_cast<ImageLoader *>(lft->data);
 105
 106         image_data *image = video_thumbnailer_create_image_data();
 107
 108 #ifdef HAVE_FFMPEGTHUMBNAILER_WH
 109 //      DEBUG_1("TG: FT requested size w=%d:h=%d for %s", lft->requested_width > 0, lft->requested_height, il->fd->path);
 110         video_thumbnailer_set_size(lft->vt, lft->requested_width, lft->requested_height);
 111 #else
 112         lft->vt->thumbnail_size = MAX(lft->requested_width,lft->requested_width);
 113 #endif
 114
 115 #ifdef HAVE_FFMPEGTHUMBNAILER_METADATA
 116         lft->vt->prefer_embedded_metadata = options->thumbnails.use_ft_metadata ? 1 : 0;
 117 #endif
 118
 119 #if HAVE_FFMPEGTHUMBNAILER_RGB
 120         lft->vt->thumbnail_image_type = Rgb;
 121 #else
 122         lft->vt->thumbnail_image_type = Png;
 123 #endif
 124
 125         video_thumbnailer_generate_thumbnail_to_buffer (lft->vt, il->fd->path, image);
 126
 127 #if HAVE_FFMPEGTHUMBNAILER_RGB
 128         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);
 129         lft->size_cb(loader, image->image_data_width, image->image_data_height, lft->data);
 130         lft->area_updated_cb(loader, 0, 0, image->image_data_width, image->image_data_height, lft->data);
 131 #else
 132         GInputStream *image_stream;
 133         image_stream = g_memory_input_stream_new_from_data (image->image_data_ptr, image->image_data_size, NULL);
 134
 135         if (image_stream == NULL)
 136         {
 137         video_thumbnailer_destroy_image_data (image);
 138         DEBUG_1("FFmpegthumbnailer: cannot open stream for %s", il->fd->path);
 139         return FALSE;
 140     }
 141
 142         lft->pixbuf  = gdk_pixbuf_new_from_stream (image_stream, NULL, NULL);
 143         lft->size_cb(loader, gdk_pixbuf_get_width(lft->pixbuf), gdk_pixbuf_get_height(lft->pixbuf), lft->data);
 144         g_object_unref (image_stream);
 145         video_thumbnailer_destroy_image_data (image);
 146 #endif
 147
 148         if (!lft->pixbuf)
 149                 {
 150                 DEBUG_1("FFmpegthumbnailer: no frame generated for %s", il->fd->path);
 151                 return FALSE;
 152                 }
 153
 154 /* See comment in image_loader_area_prepared_cb
 155  * Geeqie uses area_prepared signal to fill pixbuf with background color.
 156  * We can't do it here as pixbuf already contains the data */
 157 //      lft->area_prepared_cb(loader, lft->data);
 158
 159         lft->area_updated_cb(loader, 0, 0, gdk_pixbuf_get_width(lft->pixbuf), gdk_pixbuf_get_height(lft->pixbuf), lft->data);
 160
 161         return TRUE;
 162 }
 163
 164 static GdkPixbuf* image_loader_ft_get_pixbuf(gpointer loader)
 165 {
 166         ImageLoaderFT *lft = (ImageLoaderFT *) loader;
 167         return lft->pixbuf;
 168 }
 169
 170 static void image_loader_ft_abort(gpointer UNUSED(loader))
 171 {
 172 }
 173
 174 static gboolean image_loader_ft_close(gpointer UNUSED(loader), GError **UNUSED(error))
 175 {
 176         return TRUE;
 177 }
 178
 179 static void image_loader_ft_free(gpointer loader)
 180 {
 181         ImageLoaderFT *lft = (ImageLoaderFT *) loader;
 182         if (lft->pixbuf) g_object_unref(lft->pixbuf);
 183         video_thumbnailer_destroy (lft->vt);
 184
 185         g_free(lft);
 186 }
 187
 188 void image_loader_backend_set_ft(ImageLoaderBackend *funcs)
 189 {
 190         funcs->loader_new = image_loader_ft_new;
 191         funcs->set_size = image_loader_ft_set_size;
 192         funcs->load = image_loader_ft_load;
 193         funcs->write = NULL;
 194         funcs->get_pixbuf = image_loader_ft_get_pixbuf;
 195         funcs->close = image_loader_ft_close;
 196         funcs->abort = image_loader_ft_abort;
 197         funcs->free = image_loader_ft_free;
 198
 199         funcs->get_format_name = image_loader_ft_get_format_name;
 200         funcs->get_format_mime_types = image_loader_ft_get_format_mime_types;
 201 }
 202
 203 #endif
 204 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */