mpeg seeking is inaccurate - doesn't seek to i-frames so you may
get junk for a few frames.
- ffmpeg
+ fezzik
Description
- Test case pipe based producer for video and audio.
+ A friendly giant that likes to rhyme and throw rocks
Constructor Argument
'file' - produce a/v from file
- v4l - produce a/v from video4linux and dsp device
Initialisation Properties
- string video_type - "file" or "v4l"
- string video_file - file or v4l device
- string video_size - WxH of video to produce (default: "")
- int video_loop - loop video until audio exhausted (default: 0)
- string audio_type - "file" or "dsp"
- string audio_file - file or dsp device
- int audio_rate - audio frequency (default: 48000)
- int audio_channels - audio channels (default: 2)
- int audio_track - audio track to use (default: 0)
- int audio_loop - loop audio until video exhausted (default: 0)
int in - in point
int out - out point
- double fps - output frames per second (default: 25)
- double aspect_ratio - aspect ratio of video
+ + all producer initialising properties
Read Only Properties
- string resource - file or "v4l"
- int end_of_clip - holds 1 when input is exhausted
+ string resource - file location
+ + all producer read only properties
+
+ Details
+
+ This producer is has two roles:
+
+ 1. it handles the mappings of all file names to the other
+ producers;
+ 2. it attaches normalising filters (rescale, resize and resample)
+ to the producers (when necessary).
+
+ This producer simplifies many aspects of use. Essentially, it
+ ensures that a consumer will receive images and audio precisely as
+ they request them.
Dependencies
- ffmpeg executable.
+ all.
Known Bugs
- in point setting is broken.
-
- Implementation does not allow fast random access.
+ None.
- fezzik
+ ffmpeg
Description
- A freindly giant that likes to throw rocks
+ Test case pipe based producer for video and audio.
Constructor Argument
'file' - produce a/v from file
+ v4l - produce a/v from video4linux and dsp device
Initialisation Properties
+ string video_type - "file" or "v4l"
+ string video_file - file or v4l device
+ string video_size - WxH of video to produce (default: "")
+ int video_loop - loop video until audio exhausted (default: 0)
+ string audio_type - "file" or "dsp"
+ string audio_file - file or dsp device
+ int audio_rate - audio frequency (default: 48000)
+ int audio_channels - audio channels (default: 2)
+ int audio_track - audio track to use (default: 0)
+ int audio_loop - loop audio until video exhausted (default: 0)
int in - in point
int out - out point
+ double fps - output frames per second (default: 25)
+ double aspect_ratio - aspect ratio of video
Read Only Properties
- string resource - file location
- double fps - output frames per second
- double aspect_ratio - aspect ratio of video]
- int length - duration of resource (in frames)
+ string resource - file or "v4l"
+ int end_of_clip - holds 1 when input is exhausted
Dependencies
- all.
+ ffmpeg executable.
Known Bugs
- None.
+ in point setting is broken.
+
+ Implementation does not allow fast random access.
libdv
Known Bugs
- Can be problematic with source NTSC DV files? really? yes - try
- playing pond.dv...
+ Can be problematic with some NTSC DV files?
mcmpeg
http://developer.gnome.org/doc/API/2.0/pango/PangoMarkupFormat.html
- requires xml-like encoding special chars: <, >, & to <, >, &
- int fgcolor - an rgba color specification of the text (i.e. 0xrrggbbaa)
- int bgcolor - an rgba color of the background rectangle
+ string fgcolour - an rgba colour specification of the text (i.e. 0xrrggbbaa)
+ string bgcolour - an rgba colour of the background rectangle
int align - paragraph alignment: 0 = left, 1 = center, 2 = right
int pad - the number of pixels to pad the background rectangle beyond edges of text
default 0
string text - non-markup text (can contain markup chars un-encoded)
string font - the default typeface to use when not using markup
default "Sans 48"
- int x - the horizontal position of the title on the frame
- default 0
- int y - the vertical position of the title on the frame
- default 0
- double mix - the overall opacity control of the generated title
- default 1.0
Read Only Properties
PAL = 0, NTSC = 1
this determines proper pixel aspect ratio
double ttl - how long (seconds) to repeat each picture in file sequences
- int x - the horizontal offset from the left edge of the frame
- int y - the vertical offset from the top edge of the frame
- double mix - the opacity factor to apply to the second frame
- (used in addition to alpha channel).
-
Read Only Properties
Description
- Use ffmpeg executable to substitute audio stream.
+ Use ffmpeg executable to substitute audio stream.
Constructor Argument
Description
- Convert color image to greyscale
+ Convert colour image to greyscale
Constructor Argument
int height;
uint8_t *image;
uint8_t *alpha;
- int fgcolor;
- int bgcolor;
+ char *fgcolor;
+ char *bgcolor;
int align;
int pad;
char *markup;
// Set the default properties
mlt_properties_set_int( properties, "video_standard", mlt_video_standard_pal );
- mlt_properties_set_int( properties, "fgcolor", 0xffffffff );
- mlt_properties_set_int( properties, "bgcolor", 0x00000000 );
+ mlt_properties_set( properties, "fgcolour", "0xffffffff" );
+ mlt_properties_set( properties, "bgcolour", "0x00000000" );
mlt_properties_set_int( properties, "align", pango_align_left );
mlt_properties_set_int( properties, "pad", 0 );
mlt_properties_set( properties, "text", "" );
mlt_properties_set( properties, "font", "Sans 48" );
- mlt_properties_set_int( properties, "x", 0 );
- mlt_properties_set_int( properties, "y", 0 );
- mlt_properties_set_double( properties, "mix", 1.0 );
if ( filename == NULL )
{
return NULL;
}
+static void set_string( char **string, char *value, char *fallback )
+{
+ if ( value != NULL )
+ {
+ free( *string );
+ *string = strdup( value );
+ }
+ else if ( *string == NULL && fallback != NULL )
+ {
+ *string = strdup( fallback );
+ }
+ else if ( *string != NULL && fallback == NULL )
+ {
+ free( *string );
+ *string = NULL;
+ }
+}
+
+rgba_color parse_color( char *color )
+{
+ rgba_color result = { 0xff, 0xff, 0xff, 0xff };
+
+ if ( !strncmp( color, "0x", 2 ) )
+ {
+ unsigned int temp = 0;
+ sscanf( color + 2, "%x", &temp );
+ result.r = ( temp >> 24 ) & 0xff;
+ result.g = ( temp >> 16 ) & 0xff;
+ result.b = ( temp >> 8 ) & 0xff;
+ result.a = ( temp ) & 0xff;
+ }
+ else if ( !strcmp( color, "red" ) )
+ {
+ result.r = 0xff;
+ result.g = 0x00;
+ result.b = 0x00;
+ }
+ else if ( !strcmp( color, "green" ) )
+ {
+ result.r = 0x00;
+ result.g = 0xff;
+ result.b = 0x00;
+ }
+ else if ( !strcmp( color, "blue" ) )
+ {
+ result.r = 0x00;
+ result.g = 0x00;
+ result.b = 0xff;
+ }
+ else
+ {
+ unsigned int temp = 0;
+ sscanf( color, "%d", &temp );
+ result.r = ( temp >> 24 ) & 0xff;
+ result.g = ( temp >> 16 ) & 0xff;
+ result.b = ( temp >> 8 ) & 0xff;
+ result.a = ( temp ) & 0xff;
+ }
+
+ return result;
+}
+
static void refresh_image( mlt_frame frame, int width, int height )
{
// Pixbuf
mlt_properties producer_props = mlt_producer_properties( producer );
// Get producer properties
- int fg = mlt_properties_get_int( producer_props, "fgcolor" );
- int bg = mlt_properties_get_int( producer_props, "bgcolor" );
+ char *fg = mlt_properties_get( producer_props, "fgcolour" );
+ char *bg = mlt_properties_get( producer_props, "bgcolour" );
int align = mlt_properties_get_int( producer_props, "align" );
int pad = mlt_properties_get_int( producer_props, "pad" );
char *markup = mlt_properties_get( producer_props, "markup" );
char *font = mlt_properties_get( producer_props, "font" );
// See if any properties changed
- int property_changed = ( fg != this->fgcolor );
- property_changed = property_changed || ( bg != this->bgcolor );
+ int property_changed = ( this->fgcolor == NULL || strcmp( fg, this->fgcolor ) );
+ property_changed = property_changed || ( this->bgcolor == NULL || strcmp( bg, this->bgcolor ) );
property_changed = property_changed || ( align != this->align );
property_changed = property_changed || ( pad != this->pad );
property_changed = property_changed || ( markup && this->markup && strcmp( markup, this->markup ) );
property_changed = property_changed || ( font && this->font && strcmp( font, this->font ) );
// Save the properties for next comparison
- this->fgcolor = fg;
- this->bgcolor = bg;
this->align = align;
this->pad = pad;
- if ( markup != NULL )
- {
- free( this->markup );
- this->markup = strdup( markup );
- }
- if ( text != NULL )
- {
- free( this->text );
- this->text = strdup( text );
- }
- if ( font != NULL )
- {
- free( this->font );
- this->font = strdup( font );
- }
+ set_string( &this->fgcolor, fg, "0xffffffff" );
+ set_string( &this->bgcolor, bg, "0x00000000" );
+ set_string( &this->markup, markup, NULL );
+ set_string( &this->text, text, NULL );
+ set_string( &this->font, font, "Sans 48" );
if ( property_changed )
{
- rgba_color fgcolor =
- {
- ( fg & 0xff000000 ) >> 24,
- ( fg & 0x00ff0000 ) >> 16,
- ( fg & 0x0000ff00 ) >> 8,
- ( fg & 0x000000ff )
- };
- rgba_color bgcolor =
- {
- ( bg & 0xff000000 ) >> 24,
- ( bg & 0x00ff0000 ) >> 16,
- ( bg & 0x0000ff00 ) >> 8,
- ( bg & 0x000000ff )
- };
+ rgba_color fgcolor = parse_color( this->fgcolor );
+ rgba_color bgcolor = parse_color( this->bgcolor );
// Render the title
pixbuf = pango_get_pixbuf( markup, text, font, fgcolor, bgcolor, pad, align );
producer_pango this = parent->child;
free( this->image );
free( this->alpha );
+ free( this->fgcolor );
+ free( this->bgcolor );
free( this->markup );
free( this->text );
free( this->font );
projects / mlt / commitdiff