diff options
| author | Matthieu Crapet <mcrapet@gmail.com> | 2015-09-23 10:01:32 +0200 |
|---|---|---|
| committer | Tim-Philipp Müller <tim@centricular.com> | 2018-01-31 17:51:16 +0000 |
| commit | ba86a1d99cabf331be5f1460289b013c5bea5aa8 (patch) | |
| tree | 5f33c1c1ba8b9118843762e2ae14258ad4bb2904 /ext | |
| parent | cbb9c3122870208e355da0c76f73db3fb981e2fa (diff) | |
jpegenc: add snapshot property
Like pngenc, automatically send an EOS message.
Example of bin:
appsrc ! jpegenc snapshot=true ! filesink location=out.jpg
This is especially useful for limited/slow hardware.
Otherwise calling gst_video_convert_sample() is a better option
(internally uses videoconvert and videoscale).
https://bugzilla.gnome.org/show_bug.cgi?id=755453
Diffstat (limited to 'ext')
| -rw-r--r-- | ext/jpeg/gstjpegenc.c | 25 | ||||
| -rw-r--r-- | ext/jpeg/gstjpegenc.h | 1 |
2 files changed, 24 insertions, 2 deletions
diff --git a/ext/jpeg/gstjpegenc.c b/ext/jpeg/gstjpegenc.c index 7913a9764..3f4be0649 100644 --- a/ext/jpeg/gstjpegenc.c +++ b/ext/jpeg/gstjpegenc.c @@ -54,6 +54,7 @@ GST_DEBUG_CATEGORY_STATIC (jpegenc_debug); #define JPEG_DEFAULT_QUALITY 85 #define JPEG_DEFAULT_SMOOTHING 0 #define JPEG_DEFAULT_IDCT_METHOD JDCT_FASTEST +#define JPEG_DEFAULT_SNAPSHOT FALSE /* JpegEnc signals and args */ enum @@ -67,7 +68,8 @@ enum PROP_0, PROP_QUALITY, PROP_SMOOTHING, - PROP_IDCT_METHOD + PROP_IDCT_METHOD, + PROP_SNAPSHOT }; static void gst_jpegenc_finalize (GObject * object); @@ -150,11 +152,23 @@ gst_jpegenc_class_init (GstJpegEncClass * klass) "The IDCT algorithm to use", GST_TYPE_IDCT_METHOD, JPEG_DEFAULT_IDCT_METHOD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); + /** + * GstJpegEnc:snapshot: + * + * Send EOS after encoding a frame, useful for snapshots. + * + * Since: 1.14 + */ + g_object_class_install_property (gobject_class, PROP_SNAPSHOT, + g_param_spec_boolean ("snapshot", "Snapshot", + "Send EOS after encoding a frame, useful for snapshots", + JPEG_DEFAULT_SNAPSHOT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_element_class_add_static_pad_template (element_class, &gst_jpegenc_sink_pad_template); gst_element_class_add_static_pad_template (element_class, &gst_jpegenc_src_pad_template); + gst_element_class_set_static_metadata (element_class, "JPEG image encoder", "Codec/Encoder/Image", "Encode images in JPEG format", "Wim Taymans <wim.taymans@tvd.be>"); @@ -303,6 +317,7 @@ gst_jpegenc_init (GstJpegEnc * jpegenc) jpegenc->quality = JPEG_DEFAULT_QUALITY; jpegenc->smoothing = JPEG_DEFAULT_SMOOTHING; jpegenc->idct_method = JPEG_DEFAULT_IDCT_METHOD; + jpegenc->snapshot = JPEG_DEFAULT_SNAPSHOT; } static void @@ -528,7 +543,7 @@ gst_jpegenc_handle_frame (GstVideoEncoder * encoder, GstVideoCodecFrame * frame) jpeg_finish_compress (&jpegenc->cinfo); GST_LOG_OBJECT (jpegenc, "compressing done"); - return jpegenc->res; + return (jpegenc->snapshot) ? GST_FLOW_EOS : jpegenc->res; invalid_frame: { @@ -566,6 +581,9 @@ gst_jpegenc_set_property (GObject * object, guint prop_id, case PROP_IDCT_METHOD: jpegenc->idct_method = g_value_get_enum (value); break; + case PROP_SNAPSHOT: + jpegenc->snapshot = g_value_get_boolean (value); + break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; @@ -594,6 +612,9 @@ gst_jpegenc_get_property (GObject * object, guint prop_id, GValue * value, case PROP_IDCT_METHOD: g_value_set_enum (value, jpegenc->idct_method); break; + case PROP_SNAPSHOT: + g_value_set_boolean (value, jpegenc->snapshot); + break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; diff --git a/ext/jpeg/gstjpegenc.h b/ext/jpeg/gstjpegenc.h index 82b686810..df7529941 100644 --- a/ext/jpeg/gstjpegenc.h +++ b/ext/jpeg/gstjpegenc.h @@ -86,6 +86,7 @@ struct _GstJpegEnc gint quality; gint smoothing; gint idct_method; + gboolean snapshot; GstMemory *output_mem; GstMapInfo output_map; |