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ffmux: avoid generating caps when registering

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Don't generate caps when we register the class but delay that till when
we actually create an instance of the class.
This commit is contained in:
Edward Hervey 2009-11-02 08:49:43 +01:00
parent e8c689fe94
commit bd1b315c43
1 changed files with 58 additions and 70 deletions
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128
ext/ffmpeg/gstffmpegmux.c
View file

@ -65,12 +65,6 @@ struct _GstFFMpegMux
int max_delay; int max_delay;
}; };
typedef struct _GstFFMpegMuxClassParams
{
AVOutputFormat *in_plugin;
GstCaps *srccaps, *videosinkcaps, *audiosinkcaps;
} GstFFMpegMuxClassParams;
typedef struct _GstFFMpegMuxClass GstFFMpegMuxClass; typedef struct _GstFFMpegMuxClass GstFFMpegMuxClass;
struct _GstFFMpegMuxClass struct _GstFFMpegMuxClass
@ -133,6 +127,10 @@ static void gst_ffmpegmux_set_property (GObject * object, guint prop_id,
static void gst_ffmpegmux_get_property (GObject * object, guint prop_id, static void gst_ffmpegmux_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec); GValue * value, GParamSpec * pspec);
static GstCaps *gst_ffmpegmux_get_id_caps (enum CodecID *id_list);
static void gst_ffmpeg_mux_simple_caps_set_int_list (GstCaps * caps,
const gchar * field, guint num, const gint * values);
#define GST_FFMUX_PARAMS_QDATA g_quark_from_static_string("ffmux-params") #define GST_FFMUX_PARAMS_QDATA g_quark_from_static_string("ffmux-params")
static GstElementClass *parent_class = NULL; static GstElementClass *parent_class = NULL;
@ -145,20 +143,21 @@ gst_ffmpegmux_base_init (gpointer g_class)
GstFFMpegMuxClass *klass = (GstFFMpegMuxClass *) g_class; GstFFMpegMuxClass *klass = (GstFFMpegMuxClass *) g_class;
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstElementDetails details; GstElementDetails details;
GstFFMpegMuxClassParams *params;
GstPadTemplate *videosinktempl, *audiosinktempl, *srctempl; GstPadTemplate *videosinktempl, *audiosinktempl, *srctempl;
AVOutputFormat *in_plugin;
GstCaps *srccaps, *audiosinkcaps, *videosinkcaps;
enum CodecID *video_ids = NULL, *audio_ids = NULL;
params = in_plugin =
(GstFFMpegMuxClassParams *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass), (AVOutputFormat *) g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass),
GST_FFMUX_PARAMS_QDATA); GST_FFMUX_PARAMS_QDATA);
g_assert (params != NULL); g_assert (in_plugin != NULL);
/* construct the element details struct */ /* construct the element details struct */
details.longname = g_strdup_printf ("FFmpeg %s muxer", details.longname = g_strdup_printf ("FFmpeg %s muxer", in_plugin->long_name);
params->in_plugin->long_name);
details.klass = g_strdup ("Codec/Muxer"); details.klass = g_strdup ("Codec/Muxer");
details.description = g_strdup_printf ("FFmpeg %s muxer", details.description = g_strdup_printf ("FFmpeg %s muxer",
params->in_plugin->long_name); in_plugin->long_name);
details.author = "Wim Taymans <wim.taymans@chello.be>, " details.author = "Wim Taymans <wim.taymans@chello.be>, "
"Ronald Bultje <rbultje@ronald.bitfreak.net>"; "Ronald Bultje <rbultje@ronald.bitfreak.net>";
gst_element_class_set_details (element_class, &details); gst_element_class_set_details (element_class, &details);
@ -166,24 +165,58 @@ gst_ffmpegmux_base_init (gpointer g_class)
g_free (details.klass); g_free (details.klass);
g_free (details.description); g_free (details.description);
/* Try to find the caps that belongs here */
srccaps = gst_ffmpeg_formatid_to_caps (in_plugin->name);
if (!srccaps) {
GST_DEBUG ("Couldn't get source caps for muxer '%s', skipping format",
in_plugin->name);
goto beach;
}
if (!gst_ffmpeg_formatid_get_codecids (in_plugin->name,
&video_ids, &audio_ids, in_plugin)) {
gst_caps_unref (srccaps);
GST_DEBUG
("Couldn't get sink caps for muxer '%s'. Most likely because no input format mapping exists.",
in_plugin->name);
goto beach;
}
videosinkcaps = video_ids ? gst_ffmpegmux_get_id_caps (video_ids) : NULL;
audiosinkcaps = audio_ids ? gst_ffmpegmux_get_id_caps (audio_ids) : NULL;
/* fix up allowed caps for some muxers */
/* FIXME : This should be in gstffmpegcodecmap.c ! */
if (strcmp (in_plugin->name, "flv") == 0) {
const gint rates[] = { 44100, 22050, 11025 };
gst_ffmpeg_mux_simple_caps_set_int_list (audiosinkcaps, "rate", 3, rates);
} else if (strcmp (in_plugin->name, "gif") == 0) {
if (videosinkcaps)
gst_caps_unref (videosinkcaps);
videosinkcaps =
gst_caps_from_string ("video/x-raw-rgb, bpp=(int)24, depth=(int)24");
}
/* pad templates */ /* pad templates */
srctempl = gst_pad_template_new ("src", GST_PAD_SRC, srctempl = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, srccaps);
GST_PAD_ALWAYS, params->srccaps);
gst_element_class_add_pad_template (element_class, srctempl); gst_element_class_add_pad_template (element_class, srctempl);
if (params->audiosinkcaps) { if (audiosinkcaps) {
audiosinktempl = gst_pad_template_new ("audio_%d", audiosinktempl = gst_pad_template_new ("audio_%d",
GST_PAD_SINK, GST_PAD_REQUEST, params->audiosinkcaps); GST_PAD_SINK, GST_PAD_REQUEST, audiosinkcaps);
gst_element_class_add_pad_template (element_class, audiosinktempl); gst_element_class_add_pad_template (element_class, audiosinktempl);
} }
if (params->videosinkcaps) { if (videosinkcaps) {
videosinktempl = gst_pad_template_new ("video_%d", videosinktempl = gst_pad_template_new ("video_%d",
GST_PAD_SINK, GST_PAD_REQUEST, params->videosinkcaps); GST_PAD_SINK, GST_PAD_REQUEST, videosinkcaps);
gst_element_class_add_pad_template (element_class, videosinktempl); gst_element_class_add_pad_template (element_class, videosinktempl);
} }
klass->in_plugin = params->in_plugin; beach:
klass->in_plugin = in_plugin;
} }
static void static void
@ -707,8 +740,8 @@ gst_ffmpegmux_change_state (GstElement * element, GstStateChange transition)
return ret; return ret;
} }
GstCaps * static GstCaps *
gst_ffmpegmux_get_id_caps (enum CodecID * id_list) gst_ffmpegmux_get_id_caps (enum CodecID *id_list)
{ {
GstCaps *caps, *t; GstCaps *caps, *t;
gint i; gint i;
@ -770,7 +803,6 @@ gst_ffmpegmux_register (GstPlugin * plugin)
}; };
GType type; GType type;
AVOutputFormat *in_plugin; AVOutputFormat *in_plugin;
GstFFMpegMuxClassParams *params;
in_plugin = av_oformat_next (NULL); in_plugin = av_oformat_next (NULL);
@ -779,8 +811,6 @@ gst_ffmpegmux_register (GstPlugin * plugin)
while (in_plugin) { while (in_plugin) {
gchar *type_name; gchar *type_name;
gchar *p; gchar *p;
GstCaps *srccaps, *audiosinkcaps, *videosinkcaps;
enum CodecID *video_ids = NULL, *audio_ids = NULL;
if ((!strncmp (in_plugin->name, "u16", 3)) || if ((!strncmp (in_plugin->name, "u16", 3)) ||
(!strncmp (in_plugin->name, "s16", 3)) || (!strncmp (in_plugin->name, "s16", 3)) ||
@ -806,23 +836,8 @@ gst_ffmpegmux_register (GstPlugin * plugin)
goto next; goto next;
} }
/* Try to find the caps that belongs here */ /* FIXME : We need a fast way to know whether we have mappings for this
srccaps = gst_ffmpeg_formatid_to_caps (in_plugin->name); * muxer type. */
if (!srccaps) {
GST_DEBUG ("Couldn't get source caps for muxer '%s', skipping format",
in_plugin->name);
goto next;
}
if (!gst_ffmpeg_formatid_get_codecids (in_plugin->name,
&video_ids, &audio_ids, in_plugin)) {
gst_caps_unref (srccaps);
GST_DEBUG
("Couldn't get sink caps for muxer '%s'. Most likely because no input format mapping exists.",
in_plugin->name);
goto next;
}
videosinkcaps = video_ids ? gst_ffmpegmux_get_id_caps (video_ids) : NULL;
audiosinkcaps = audio_ids ? gst_ffmpegmux_get_id_caps (audio_ids) : NULL;
/* construct the type */ /* construct the type */
type_name = g_strdup_printf ("ffmux_%s", in_plugin->name); type_name = g_strdup_printf ("ffmux_%s", in_plugin->name);
@ -835,44 +850,17 @@ gst_ffmpegmux_register (GstPlugin * plugin)
p++; p++;
} }
/* fix up allowed caps for some muxers */
if (strcmp (in_plugin->name, "flv") == 0) {
const gint rates[] = { 44100, 22050, 11025 };
gst_ffmpeg_mux_simple_caps_set_int_list (audiosinkcaps, "rate", 3, rates);
} else if (strcmp (in_plugin->name, "gif") == 0) {
if (videosinkcaps)
gst_caps_unref (videosinkcaps);
videosinkcaps =
gst_caps_from_string ("video/x-raw-rgb, bpp=(int)24, depth=(int)24");
}
type = g_type_from_name (type_name); type = g_type_from_name (type_name);
if (!type) { if (!type) {
/* create a cache for these properties */
params = g_new0 (GstFFMpegMuxClassParams, 1);
params->in_plugin = in_plugin;
params->srccaps = srccaps;
params->videosinkcaps = videosinkcaps;
params->audiosinkcaps = audiosinkcaps;
/* create the type now */ /* create the type now */
type = g_type_register_static (GST_TYPE_ELEMENT, type_name, &typeinfo, 0); type = g_type_register_static (GST_TYPE_ELEMENT, type_name, &typeinfo, 0);
g_type_set_qdata (type, GST_FFMUX_PARAMS_QDATA, (gpointer) params); g_type_set_qdata (type, GST_FFMUX_PARAMS_QDATA, (gpointer) in_plugin);
g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, &tag_setter_info); g_type_add_interface_static (type, GST_TYPE_TAG_SETTER, &tag_setter_info);
} else {
gst_caps_replace (&srccaps, NULL);
gst_caps_replace (&audiosinkcaps, NULL);
gst_caps_replace (&videosinkcaps, NULL);
} }
if (!gst_element_register (plugin, type_name, GST_RANK_NONE, type)) { if (!gst_element_register (plugin, type_name, GST_RANK_NONE, type)) {
g_free (type_name); g_free (type_name);
gst_caps_replace (&srccaps, NULL);
gst_caps_replace (&audiosinkcaps, NULL);
gst_caps_replace (&videosinkcaps, NULL);
return FALSE; return FALSE;
} }