void
totem_save_position (Totem *totem)
{
gint64 stream_length, position;
char *pos_str;
GFile *file;
GError *error = NULL;
if (totem->remember_position == FALSE)
return;
if (totem->mrl == NULL)
return;
stream_length = bacon_video_widget_get_stream_length (totem->bvw);
position = bacon_video_widget_get_current_time (totem->bvw);
file = g_file_new_for_uri (totem->mrl);
/* Don't save if it's:
* - a live stream
* - too short to make saving useful
* - too close to the beginning or end to make saving useful
*/
if (stream_length < SAVE_POSITION_THRESHOLD ||
(stream_length - position) < stream_length * SAVE_POSITION_END_THRESHOLD ||
position < stream_length * SAVE_POSITION_END_THRESHOLD) {
g_debug ("not saving position because the video/track is too short");
/* Remove the attribute if it is currently set on the file; this ensures that if we start watching a stream and save the position
* half-way through, then later continue watching it to the end, the mid-way saved position will be removed when we finish the
* stream. Only do this for non-live streams. */
if (stream_length > 0) {
g_file_set_attribute_string (file, SAVE_POSITION_FILE_ATTRIBUTE, "", G_FILE_QUERY_INFO_NONE, NULL, &error);
if (error != NULL) {
g_warning ("g_file_set_attribute_string failed: %s", error->message);
g_error_free (error);
}
}
g_object_unref (file);
return;
}
g_debug ("saving position: %"G_GINT64_FORMAT, position);
/* Save the position in the stream as a file attribute */
pos_str = g_strdup_printf ("%"G_GINT64_FORMAT, position);
g_file_set_attribute_string (file, SAVE_POSITION_FILE_ATTRIBUTE, pos_str, G_FILE_QUERY_INFO_NONE, NULL, &error);
g_free (pos_str);
if (error != NULL) {
g_warning ("g_file_set_attribute_string failed: %s", error->message);
g_error_free (error);
}
g_object_unref (file);
}
static GdkPixbuf *
create_gallery (BaconVideoWidget *bvw, const char *input, const char *output)
{
GdkPixbuf *screenshot, *pixbuf = NULL;
cairo_t *cr;
cairo_surface_t *surface;
PangoLayout *layout;
PangoFontDescription *font_desc;
gint64 stream_length, screenshot_interval, pos;
guint columns = 3, rows, current_column, current_row, x, y;
gint screenshot_width = 0, screenshot_height = 0, x_padding = 0, y_padding = 0;
gfloat scale = 1.0;
gchar *header_text, *duration_text, *filename;
/* Calculate how many screenshots we're going to take */
stream_length = bacon_video_widget_get_stream_length (bvw);
/* As a default, we have one screenshot per minute of stream,
* but adjusted so we don't have any gaps in the resulting gallery. */
if (gallery == 0) {
gallery = stream_length / 60000;
while (gallery % 3 != 0 &&
gallery % 4 != 0 &&
gallery % 5 != 0) {
gallery++;
}
}
if (gallery < GALLERY_MIN)
gallery = GALLERY_MIN;
if (gallery > GALLERY_MAX)
gallery = GALLERY_MAX;
screenshot_interval = stream_length / gallery;
/* Put a lower bound on the screenshot interval so we can't enter an infinite loop below */
if (screenshot_interval == 0)
screenshot_interval = 1;
PROGRESS_DEBUG ("Producing gallery of %u screenshots, taken at %" G_GINT64_FORMAT " millisecond intervals throughout a %" G_GINT64_FORMAT " millisecond-long stream.",
gallery, screenshot_interval, stream_length);
/* Calculate how to arrange the screenshots so we don't get ones orphaned on the last row.
* At this point, only deal with arrangements of 3, 4 or 5 columns. */
y = G_MAXUINT;
for (x = 3; x <= 5; x++) {
if (gallery % x == 0 || x - gallery % x < y) {
y = x - gallery % x;
columns = x;
/* Have we found an optimal solution already? */
if (y == x)
break;
}
}
rows = ceil ((gfloat) gallery / (gfloat) columns);
PROGRESS_DEBUG ("Outputting as %u rows and %u columns.", rows, columns);
/* Take the screenshots and composite them into a pixbuf */
current_column = current_row = x = y = 0;
for (pos = screenshot_interval; pos <= stream_length; pos += screenshot_interval) {
screenshot = capture_frame_at_time (bvw, input, output, pos);
if (pixbuf == NULL) {
screenshot_width = gdk_pixbuf_get_width (screenshot);
screenshot_height = gdk_pixbuf_get_height (screenshot);
/* Calculate a scaling factor so that screenshot_width -> output_size */
scale = (float) output_size / (float) screenshot_width;
x_padding = x = MAX (output_size * 0.05, 1);
y_padding = y = MAX (scale * screenshot_height * 0.05, 1);
PROGRESS_DEBUG ("Scaling each screenshot by %f.", scale);
/* Create our massive pixbuf */
pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8,
columns * output_size + (columns + 1) * x_padding,
(guint) (rows * scale * screenshot_height + (rows + 1) * y_padding));
gdk_pixbuf_fill (pixbuf, 0x000000ff);
PROGRESS_DEBUG ("Created output pixbuf (%ux%u).", gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf));
}
/* Composite the screenshot into our gallery */
gdk_pixbuf_composite (screenshot, pixbuf,
x, y, output_size, scale * screenshot_height,
(gdouble) x, (gdouble) y, scale, scale,
GDK_INTERP_BILINEAR, 255);
g_object_unref (screenshot);
PROGRESS_DEBUG ("Composited screenshot from %" G_GINT64_FORMAT " milliseconds (address %u) at (%u,%u).",
pos, GPOINTER_TO_UINT (screenshot), x, y);
/* We print progress in the range 10% (MIN_PROGRESS) to 50% (MAX_PROGRESS - MIN_PROGRESS) / 2.0 */
PRINT_PROGRESS (MIN_PROGRESS + (current_row * columns + current_column) * (((MAX_PROGRESS - MIN_PROGRESS) / gallery) / 2.0));
current_column = (current_column + 1) % columns;
x += output_size + x_padding;
if (current_column == 0) {
x = x_padding;
y += scale * screenshot_height + y_padding;
current_row++;
}
}
PROGRESS_DEBUG ("Converting pixbuf to a Cairo surface.");
/* Load the pixbuf into a Cairo surface and overlay the text. The height is the height of
* the gallery plus the necessary height for 3 lines of header (at ~18px each), plus some
* extra padding. */
surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf) + GALLERY_HEADER_HEIGHT + y_padding);
cr = cairo_create (surface);
cairo_surface_destroy (surface);
/* First, copy across the gallery pixbuf */
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0.0, GALLERY_HEADER_HEIGHT + y_padding);
cairo_rectangle (cr, 0.0, GALLERY_HEADER_HEIGHT + y_padding, gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf));
cairo_fill (cr);
g_object_unref (pixbuf);
/* Build the header information */
duration_text = totem_time_to_string (stream_length);
filename = NULL;
if (strstr (input, "://")) {
char *local;
local = g_filename_from_uri (input, NULL, NULL);
filename = g_path_get_basename (local);
g_free (local);
}
if (filename == NULL)
filename = g_path_get_basename (input);
/* Translators: The first string is "Filename" (as translated); the second is an actual filename.
The third string is "Resolution" (as translated); the fourth and fifth are screenshot height and width, respectively.
The sixth string is "Duration" (as translated); the seventh is the movie duration in words. */
header_text = g_strdup_printf (_("<b>%s</b>: %s\n<b>%s</b>: %d\303\227%d\n<b>%s</b>: %s"),
_("Filename"),
filename,
_("Resolution"),
screenshot_width,
screenshot_height,
_("Duration"),
duration_text);
g_free (duration_text);
g_free (filename);
PROGRESS_DEBUG ("Writing header text with Pango.");
/* Write out some header information */
layout = pango_cairo_create_layout (cr);
font_desc = pango_font_description_from_string ("Sans 18px");
pango_layout_set_font_description (layout, font_desc);
pango_font_description_free (font_desc);
pango_layout_set_markup (layout, header_text, -1);
g_free (header_text);
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
cairo_move_to (cr, (gdouble) x_padding, (gdouble) y_padding);
pango_cairo_show_layout (cr, layout);
/* Go through each screenshot and write its timestamp */
current_column = current_row = 0;
x = x_padding + output_size;
y = y_padding * 2 + GALLERY_HEADER_HEIGHT + scale * screenshot_height;
font_desc = pango_font_description_from_string ("Sans 10px");
pango_layout_set_font_description (layout, font_desc);
pango_font_description_free (font_desc);
PROGRESS_DEBUG ("Writing screenshot timestamps with Pango.");
for (pos = screenshot_interval; pos <= stream_length; pos += screenshot_interval) {
gchar *timestamp_text;
gint layout_width, layout_height;
timestamp_text = totem_time_to_string (pos);
pango_layout_set_text (layout, timestamp_text, -1);
pango_layout_get_pixel_size (layout, &layout_width, &layout_height);
/* Display the timestamp in the bottom-right corner of the current screenshot */
cairo_move_to (cr, x - layout_width - 0.02 * output_size, y - layout_height - 0.02 * scale * screenshot_height);
/* We have to stroke the text so it's visible against screenshots of the same
* foreground color. */
pango_cairo_layout_path (cr, layout);
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
cairo_stroke_preserve (cr);
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
cairo_fill (cr);
PROGRESS_DEBUG ("Writing timestamp \"%s\" at (%f,%f).", timestamp_text,
x - layout_width - 0.02 * output_size,
y - layout_height - 0.02 * scale * screenshot_height);
/* We print progress in the range 50% (MAX_PROGRESS - MIN_PROGRESS) / 2.0) to 90% (MAX_PROGRESS) */
PRINT_PROGRESS (MIN_PROGRESS + (MAX_PROGRESS - MIN_PROGRESS) / 2.0 + (current_row * columns + current_column) * (((MAX_PROGRESS - MIN_PROGRESS) / gallery) / 2.0));
g_free (timestamp_text);
current_column = (current_column + 1) % columns;
x += output_size + x_padding;
if (current_column == 0) {
x = x_padding + output_size;
y += scale * screenshot_height + y_padding;
current_row++;
}
}
g_object_unref (layout);
PROGRESS_DEBUG ("Converting Cairo surface back to pixbuf.");
/* Create a new pixbuf from the Cairo context */
pixbuf = cairo_surface_to_pixbuf (cairo_get_target (cr));
cairo_destroy (cr);
return pixbuf;
}
