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command-line-formatter: Refactor to generate the documentation automatically
https://bugzilla.gnome.org/show_bug.cgi?id=794837
This commit is contained in:
Thibault Saunier
parent
15782c6ecd
commit
0f486de0d9
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@ -35,13 +35,143 @@ struct _GESCommandLineFormatterPrivate
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G_DEFINE_TYPE (GESCommandLineFormatter, ges_command_line_formatter,
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GES_TYPE_FORMATTER);
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static gboolean
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_ges_command_line_formatter_add_clip (GESTimeline * timeline,
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GstStructure * structure, GError ** error);
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static gboolean
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_ges_command_line_formatter_add_effect (GESTimeline * timeline,
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GstStructure * structure, GError ** error);
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static gboolean
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_ges_command_line_formatter_add_test_clip (GESTimeline * timeline,
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GstStructure * structure, GError ** error);
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typedef struct
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{
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const gchar *long_name;
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const gchar *short_name;
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GType type;
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const gchar *new_name;
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} Properties;
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const gchar *desc;
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} Property;
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// Currently Clip has the most properties.. adapt as needed
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#define MAX_PROPERTIES 8
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typedef struct
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{
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const gchar *long_name;
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gchar short_name;
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ActionFromStructureFunc callback;
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const gchar *description;
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/* The first property must be the ID on the command line */
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Property properties[MAX_PROPERTIES];
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} GESCommandLineOption;
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/* *INDENT-OFF* */
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static GESCommandLineOption options[] = {
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{"clip", 'c', (ActionFromStructureFunc) _ges_command_line_formatter_add_clip,
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"<clip uri> - Adds a clip in the timeline.",
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{
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{
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"uri", "n", 0, "asset-id",
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"The URI of the media file."
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},
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{
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"name", "n", 0, NULL,
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"The name of the clip, can be used as an ID later."
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},
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{
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"start", "s",GST_TYPE_CLOCK_TIME, NULL,
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"The starting position of the clip in the timeline."
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},
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{
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"duration", "d", GST_TYPE_CLOCK_TIME, NULL,
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"The duration of the clip."
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},
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{
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"inpoint", "i", GST_TYPE_CLOCK_TIME, NULL,
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"The inpoint of the clip (time in the input file to start playing from)."
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},
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{
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"track-types", "tt", 0, NULL,
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"The type of the tracks where the clip should be used (audio or video or audio+video)."
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},
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{
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"layer", "l", 0, NULL,
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"The priority of the layer into which the clip should be added."
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},
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{NULL, 0, 0, NULL, FALSE},
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},
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},
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{"effect", 'e', (ActionFromStructureFunc) _ges_command_line_formatter_add_effect,
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"<effect bin description> - Adds an effect as specified by 'bin-description',\n"
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"similar to gst-launch-style pipeline description, without setting properties\n"
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"(see `set-` for information about how to set properties).\n",
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{
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{
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"bin-description", "d", 0, "asset-id",
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"gst-launch style bin description."
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},
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{
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"element-name", "e", 0, NULL,
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"The name of the element to apply the effect on."
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},
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{
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"name", "n", 0, "child-name",
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"The name to be given to the effect."
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},
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{NULL, NULL, 0, NULL, FALSE},
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},
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},
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{"test-clip", 0, (ActionFromStructureFunc) _ges_command_line_formatter_add_test_clip,
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"<test clip pattern> - Add a test clip in the timeline.",
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{
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{
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"pattern", "p", 0, NULL,
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"The testsource pattern name."
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},
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{
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"name", "n", 0, NULL,
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"The name of the clip, can be used as an ID later."
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},
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{
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"start", "s",GST_TYPE_CLOCK_TIME, NULL,
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"The starting position of the clip in the timeline."
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},
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{
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"duration", "d", GST_TYPE_CLOCK_TIME, NULL,
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"The duration of the clip."
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},
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{
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"inpoint", "i", GST_TYPE_CLOCK_TIME, NULL,
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"The inpoint of the clip (time in the input file to start playing)."
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},
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{
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"layer", "l", 0, NULL,
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"The priority of the layer into which the clip should be added."
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},
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{NULL, 0, 0, NULL, FALSE},
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},
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},
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{
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"set-", 0, NULL,
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"<property name> <value> - Set a property on the last added element.\n"
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"Any child property that exists on the previously added element\n"
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"can be used as <property name>",
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{
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{NULL, NULL, 0, NULL, FALSE},
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},
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},
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};
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/* *INDENT-ON* */
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/* Should always be in the same order as the options */
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typedef enum
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{
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CLIP,
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EFFECT,
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TEST_CLIP,
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SET,
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} GESCommandLineOptionType;
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static gint /* -1: not present, 0: failure, 1: OK */
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_convert_to_clocktime (GstStructure * structure, const gchar * name,
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@ -84,7 +214,7 @@ done:
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}
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static gboolean
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_cleanup_fields (const Properties * field_names, GstStructure * structure,
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_cleanup_fields (const Property * field_names, GstStructure * structure,
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GError ** error)
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{
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guint i;
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@ -141,18 +271,7 @@ static gboolean
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_ges_command_line_formatter_add_clip (GESTimeline * timeline,
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GstStructure * structure, GError ** error)
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{
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const Properties field_names[] = {
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{"uri", "n", 0, "asset-id"},
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{"name", "n", 0, NULL},
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{"start", "s", GST_TYPE_CLOCK_TIME, NULL},
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{"duration", "d", GST_TYPE_CLOCK_TIME, NULL},
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{"inpoint", "i", GST_TYPE_CLOCK_TIME, NULL},
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{"track-types", "tt", 0, NULL},
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{"layer", "l", 0, NULL},
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{NULL, 0, 0, NULL},
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};
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if (!_cleanup_fields (field_names, structure, error))
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if (!_cleanup_fields (options[CLIP].properties, structure, error))
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return FALSE;
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gst_structure_set (structure, "type", G_TYPE_STRING, "GESUriClip", NULL);
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@ -164,17 +283,7 @@ static gboolean
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_ges_command_line_formatter_add_test_clip (GESTimeline * timeline,
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GstStructure * structure, GError ** error)
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{
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const Properties field_names[] = {
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{"pattern", "p", G_TYPE_STRING, NULL},
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{"name", "n", 0, NULL},
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{"start", "s", GST_TYPE_CLOCK_TIME, NULL},
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{"duration", "d", GST_TYPE_CLOCK_TIME, NULL},
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{"inpoint", "i", GST_TYPE_CLOCK_TIME, NULL},
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{"layer", "l", 0, NULL},
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{NULL, 0, 0, NULL},
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};
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if (!_cleanup_fields (field_names, structure, error))
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if (!_cleanup_fields (options[TEST_CLIP].properties, structure, error))
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return FALSE;
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gst_structure_set (structure, "type", G_TYPE_STRING, "GESTestClip", NULL);
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@ -188,14 +297,7 @@ static gboolean
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_ges_command_line_formatter_add_effect (GESTimeline * timeline,
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GstStructure * structure, GError ** error)
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{
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const Properties field_names[] = {
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{"element-name", "e", 0, NULL},
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{"bin-description", "d", 0, "asset-id"},
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{"name", "n", 0, "child-name"},
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{NULL, NULL, 0, NULL},
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};
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if (!_cleanup_fields (field_names, structure, error))
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if (!_cleanup_fields (options[EFFECT].properties, structure, error))
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return FALSE;
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gst_structure_set (structure, "child-type", G_TYPE_STRING, "GESEffect", NULL);
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@ -203,45 +305,15 @@ _ges_command_line_formatter_add_effect (GESTimeline * timeline,
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return _ges_container_add_child_from_struct (timeline, structure, error);
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}
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static GOptionEntry timeline_parsing_options[] = {
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{"clip", 'c', 0.0, G_OPTION_ARG_CALLBACK,
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&_ges_command_line_formatter_add_clip,
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"<clip uri> - Adds a clip in the timeline.",
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" * s=, start The start position of the element inside the layer.\n"
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" * d=, duration The duration of the clip.\n"
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" * i=, inpoint The inpoint of the clip.\n"
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" * tt=, track-types The type of the tracks where the clip should be used:\n"
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" Examples:\n"
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" * audio / a\n"
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" * video / v\n"
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" * audio+video / a+v\n"
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" (Will default to all the media types in the clip that match the global track-types)\n"},
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{"effect", 'e', 0.0, G_OPTION_ARG_CALLBACK,
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&_ges_command_line_formatter_add_effect,
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"<effect bin description> - Adds an effect as specified by 'bin-description'.",
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" * d=, bin-description The description of the effect bin with a gst-launch-style pipeline description.\n"
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" * e=, element-name The name of the element to apply the effect on.\n"},
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{"test-clip", 0, 0.0, G_OPTION_ARG_CALLBACK,
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&_ges_command_line_formatter_add_test_clip,
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"<test clip pattern> - Add a test clip in the timeline.",
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" * s=, start The start position of the element inside the layer.\n"
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" * d=, duration The duration of the clip.\n"
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" * i=, inpoint The inpoint of the clip.\n"},
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{"set-", 0, 0.0, G_OPTION_ARG_CALLBACK,
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NULL,
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"<property name> <value> - Set a property on the last added element."
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" Any child property that exists on the previously added element"
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" can be used as <property name>", NULL},
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};
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gchar *
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ges_command_line_formatter_get_help (gint nargs, gchar ** commands)
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{
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gint i;
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gchar *help = NULL;
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GString *help = g_string_new (NULL);
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for (i = 0; i < G_N_ELEMENTS (timeline_parsing_options); i++) {
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for (i = 0; i < G_N_ELEMENTS (options); i++) {
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gboolean print = nargs == 0;
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GESCommandLineOption option = options[i];
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if (!print) {
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gint j;
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@ -249,7 +321,7 @@ ges_command_line_formatter_get_help (gint nargs, gchar ** commands)
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for (j = 0; j < nargs; j++) {
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gchar *cname = commands[j][0] == '+' ? &commands[j][1] : commands[j];
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if (!g_strcmp0 (cname, timeline_parsing_options[i].long_name)) {
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if (!g_strcmp0 (cname, option.long_name)) {
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print = TRUE;
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break;
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}
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@ -257,24 +329,27 @@ ges_command_line_formatter_get_help (gint nargs, gchar ** commands)
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}
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if (print) {
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gchar *tmp = g_strdup_printf ("%s %s%s %s\n", help ? help : "",
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timeline_parsing_options[i].arg_description ? "+" : "",
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timeline_parsing_options[i].long_name,
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timeline_parsing_options[i].description);
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g_string_append_printf (help, "%s%s %s\n",
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option.properties[0].long_name ? "+" : "",
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option.long_name, option.description);
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g_free (help);
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help = tmp;
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if (option.properties[0].long_name) {
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gint j;
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if (timeline_parsing_options[i].arg_description) {
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tmp = g_strdup_printf ("%s Properties:\n%s\n", help,
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timeline_parsing_options[i].arg_description);
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g_free (help);
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help = tmp;
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g_string_append (help, " Properties:\n");
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for (j = 1; option.properties[j].long_name; j++) {
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Property prop = option.properties[j];
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g_string_append_printf (help, " * %s: %s\n", prop.long_name,
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prop.desc);
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}
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}
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g_string_append (help, "\n");
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}
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}
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return help;
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return g_string_free (help, FALSE);
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}
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@ -363,13 +438,10 @@ _load (GESFormatter * self, GESTimeline * timeline, const gchar * string,
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continue;
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}
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for (i = 0; i < G_N_ELEMENTS (timeline_parsing_options); i++) {
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if (gst_structure_has_name (tmp->data,
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timeline_parsing_options[i].long_name)
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|| (strlen (name) == 1 &&
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*name == timeline_parsing_options[i].short_name)) {
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EXEC (((ActionFromStructureFunc) timeline_parsing_options[i].arg_data),
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tmp->data, &err);
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for (i = 0; i < G_N_ELEMENTS (options); i++) {
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if (gst_structure_has_name (tmp->data, options[i].long_name)
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|| (strlen (name) == 1 && *name == options[i].short_name)) {
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EXEC (((ActionFromStructureFunc) options[i].callback), tmp->data, &err);
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}
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}
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}
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