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ext/dv/gstdvdec.*: Implement drop_factor property to lower the framerate with a factor.

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Original commit message from CVS:
* ext/dv/gstdvdec.c: (gst_dvdec_class_init), (gst_dvdec_init),
(gst_dvdec_video_getcaps), (gst_dvdec_video_link),
(gst_dvdec_push), (gst_dvdec_loop), (gst_dvdec_change_state),
(gst_dvdec_set_property), (gst_dvdec_get_property):
* ext/dv/gstdvdec.h:
Implement drop_factor property to lower the framerate with
a factor.
This commit is contained in:
Wim Taymans 2004-06-27 16:38:41 +00:00
parent 85a72aa832
commit e5bb1f1376
3 changed files with 57 additions and 21 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2004-06-27 Wim Taymans <wim@fluendo.com>
* ext/dv/gstdvdec.c: (gst_dvdec_class_init), (gst_dvdec_init),
(gst_dvdec_video_getcaps), (gst_dvdec_video_link),
(gst_dvdec_push), (gst_dvdec_loop), (gst_dvdec_change_state),
(gst_dvdec_set_property), (gst_dvdec_get_property):
* ext/dv/gstdvdec.h:
Implement drop_factor property to lower the framerate with
a factor.
2004-06-27 Thomas Vander Stichele <thomas at apestaart dot org> 2004-06-27 Thomas Vander Stichele <thomas at apestaart dot org>
* gst-libs/gst/colorbalance/Makefile.am: * gst-libs/gst/colorbalance/Makefile.am:

66
ext/dv/gstdvdec.c
View file

@ -55,6 +55,9 @@ enum
LAST_SIGNAL LAST_SIGNAL
}; };
#define DV_DEFAULT_QUALITY DV_QUALITY_BEST
#define DV_DEFAULT_DECODE_NTH 1
/* Arguments are identified the same way, but cannot be zero, so you /* Arguments are identified the same way, but cannot be zero, so you
* must leave the ARG_0 entry in as a placeholder. * must leave the ARG_0 entry in as a placeholder.
*/ */
@ -63,7 +66,8 @@ enum
ARG_0, ARG_0,
ARG_CLAMP_LUMA, ARG_CLAMP_LUMA,
ARG_CLAMP_CHROMA, ARG_CLAMP_CHROMA,
ARG_QUALITY ARG_QUALITY,
ARG_DECODE_NTH
/* FILL ME */ /* FILL ME */
}; };
@ -76,8 +80,6 @@ const gint qualities[] = {
DV_QUALITY_AC_2 | DV_QUALITY_COLOR DV_QUALITY_AC_2 | DV_QUALITY_COLOR
}; };
#define DV_QUALITY_DEFAULT 5
/* The PadFactory structures describe what pads the element has or /* The PadFactory structures describe what pads the element has or
* can have. They can be quite complex, but for this dvdec plugin * can have. They can be quite complex, but for this dvdec plugin
* they are rather simple. * they are rather simple.
@ -96,10 +98,10 @@ static GstStaticPadTemplate video_src_temp = GST_STATIC_PAD_TEMPLATE ("video",
"width = (int) 720, " "width = (int) 720, "
"height = (int) { " "height = (int) { "
G_STRINGIFY (NTSC_HEIGHT) ", " G_STRINGIFY (PAL_HEIGHT) G_STRINGIFY (NTSC_HEIGHT) ", " G_STRINGIFY (PAL_HEIGHT)
" }, " " }, " "framerate = (double) [ 1.0, 60.0 ];"
"framerate = (double) { " //"framerate = (double) { "
G_STRINGIFY (PAL_FRAMERATE) ", " G_STRINGIFY (NTSC_FRAMERATE) //G_STRINGIFY (PAL_FRAMERATE) ", " G_STRINGIFY (NTSC_FRAMERATE)
" }; " //" }; "
"video/x-raw-rgb, " "video/x-raw-rgb, "
"bpp = (int) 32, " "bpp = (int) 32, "
"depth = (int) 32, " "depth = (int) 32, "
@ -110,10 +112,10 @@ static GstStaticPadTemplate video_src_temp = GST_STATIC_PAD_TEMPLATE ("video",
"width = (int) 720, " "width = (int) 720, "
"height = (int) { " "height = (int) { "
G_STRINGIFY (NTSC_HEIGHT) ", " G_STRINGIFY (PAL_HEIGHT) G_STRINGIFY (NTSC_HEIGHT) ", " G_STRINGIFY (PAL_HEIGHT)
" }, " " }, " "framerate = (double) [ 1.0, 60.0 ];"
"framerate = (double) { " //"framerate = (double) { "
G_STRINGIFY (PAL_FRAMERATE) ", " G_STRINGIFY (NTSC_FRAMERATE) //G_STRINGIFY (PAL_FRAMERATE) ", " G_STRINGIFY (NTSC_FRAMERATE)
" }; " //" }; "
"video/x-raw-rgb, " "video/x-raw-rgb, "
"bpp = (int) 24, " "bpp = (int) 24, "
"depth = (int) 24, " "depth = (int) 24, "
@ -124,10 +126,11 @@ static GstStaticPadTemplate video_src_temp = GST_STATIC_PAD_TEMPLATE ("video",
"width = (int) 720, " "width = (int) 720, "
"height = (int) { " "height = (int) { "
G_STRINGIFY (NTSC_HEIGHT) ", " G_STRINGIFY (PAL_HEIGHT) G_STRINGIFY (NTSC_HEIGHT) ", " G_STRINGIFY (PAL_HEIGHT)
" }, " " }, " "framerate = (double) [ 1.0, 60.0 ]"
"framerate = (double) { " //"framerate = (double) { "
G_STRINGIFY (PAL_FRAMERATE) ", " G_STRINGIFY (NTSC_FRAMERATE) //G_STRINGIFY (PAL_FRAMERATE) ", " G_STRINGIFY (NTSC_FRAMERATE)
" }") //" }"
)
); );
static GstStaticPadTemplate audio_src_temp = GST_STATIC_PAD_TEMPLATE ("audio", static GstStaticPadTemplate audio_src_temp = GST_STATIC_PAD_TEMPLATE ("audio",
@ -284,7 +287,10 @@ gst_dvdec_class_init (GstDVDecClass * klass)
FALSE, G_PARAM_READWRITE)); FALSE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QUALITY, g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_QUALITY,
g_param_spec_enum ("quality", "Quality", "Decoding quality", g_param_spec_enum ("quality", "Quality", "Decoding quality",
GST_TYPE_DVDEC_QUALITY, DV_QUALITY_DEFAULT, G_PARAM_READWRITE)); GST_TYPE_DVDEC_QUALITY, DV_DEFAULT_QUALITY, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DECODE_NTH,
g_param_spec_int ("drop-factor", "Drop Factor", "Only decode Nth frame",
1, G_MAXINT, DV_DEFAULT_DECODE_NTH, G_PARAM_READWRITE));
gobject_class->set_property = gst_dvdec_set_property; gobject_class->set_property = gst_dvdec_set_property;
gobject_class->get_property = gst_dvdec_get_property; gobject_class->get_property = gst_dvdec_get_property;
@ -366,10 +372,11 @@ gst_dvdec_init (GstDVDec * dvdec)
dvdec->height = 0; dvdec->height = 0;
dvdec->frequency = 0; dvdec->frequency = 0;
dvdec->channels = 0; dvdec->channels = 0;
dvdec->drop_factor = 1;
dvdec->clamp_luma = FALSE; dvdec->clamp_luma = FALSE;
dvdec->clamp_chroma = FALSE; dvdec->clamp_chroma = FALSE;
dvdec->quality = DV_QUALITY_BEST; dvdec->quality = DV_DEFAULT_QUALITY;
dvdec->loop = FALSE; dvdec->loop = FALSE;
for (i = 0; i < 4; i++) { for (i = 0; i < 4; i++) {
@ -740,7 +747,8 @@ gst_dvdec_video_getcaps (GstPad * pad)
gst_structure_set (structure, gst_structure_set (structure,
"height", G_TYPE_INT, dvdec->height, "height", G_TYPE_INT, dvdec->height,
"framerate", G_TYPE_DOUBLE, dvdec->framerate, NULL); "framerate", G_TYPE_DOUBLE, dvdec->framerate / dvdec->drop_factor,
NULL);
} }
} }
@ -769,7 +777,8 @@ gst_dvdec_video_link (GstPad * pad, const GstCaps * caps)
!gst_structure_get_double (structure, "framerate", &framerate)) !gst_structure_get_double (structure, "framerate", &framerate))
return GST_PAD_LINK_REFUSED; return GST_PAD_LINK_REFUSED;
if ((height != dvdec->height) || (framerate != dvdec->framerate)) if ((height != dvdec->height)
|| (framerate != dvdec->framerate / dvdec->drop_factor))
return GST_PAD_LINK_REFUSED; return GST_PAD_LINK_REFUSED;
if (strcmp (gst_structure_get_name (structure), "video/x-raw-rgb") == 0) { if (strcmp (gst_structure_get_name (structure), "video/x-raw-rgb") == 0) {
@ -871,7 +880,7 @@ gst_dvdec_loop (GstElement * element)
} }
ts = dvdec->next_ts; ts = dvdec->next_ts;
dvdec->next_ts += GST_SECOND / dvdec->framerate; dvdec->next_ts += GST_SECOND / fps;
duration = dvdec->next_ts - ts; duration = dvdec->next_ts - ts;
dv_parse_packs (dvdec->decoder, GST_BUFFER_DATA (buf)); dv_parse_packs (dvdec->decoder, GST_BUFFER_DATA (buf));
@ -940,6 +949,13 @@ gst_dvdec_loop (GstElement * element)
guint8 *outframe_ptrs[3]; guint8 *outframe_ptrs[3];
gint outframe_pitches[3]; gint outframe_pitches[3];
dvdec->framecount++;
if (dvdec->framecount < dvdec->drop_factor) {
/* don't decode */
goto end;
}
dvdec->framecount = 0;
if ((dvdec->framerate != fps) || (dvdec->height != height)) { if ((dvdec->framerate != fps) || (dvdec->height != height)) {
dvdec->height = height; dvdec->height = height;
dvdec->framerate = fps; dvdec->framerate = fps;
@ -970,7 +986,7 @@ gst_dvdec_loop (GstElement * element)
dvdec->space, outframe_ptrs, outframe_pitches); dvdec->space, outframe_ptrs, outframe_pitches);
GST_BUFFER_TIMESTAMP (outbuf) = ts; GST_BUFFER_TIMESTAMP (outbuf) = ts;
GST_BUFFER_DURATION (outbuf) = duration; GST_BUFFER_DURATION (outbuf) = duration * dvdec->drop_factor;
gst_dvdec_push (dvdec, outbuf, dvdec->videosrcpad, ts); gst_dvdec_push (dvdec, outbuf, dvdec->videosrcpad, ts);
} else { } else {
@ -978,6 +994,7 @@ gst_dvdec_loop (GstElement * element)
dvdec->framerate = fps; dvdec->framerate = fps;
} }
end:
if ((dvdec->end_position != -1) && if ((dvdec->end_position != -1) &&
(dvdec->next_ts >= dvdec->end_position) && !dvdec->loop) { (dvdec->next_ts >= dvdec->end_position) && !dvdec->loop) {
gst_element_set_eos (GST_ELEMENT (dvdec)); gst_element_set_eos (GST_ELEMENT (dvdec));
@ -1003,6 +1020,7 @@ gst_dvdec_change_state (GstElement * element)
dv_decoder_new (0, dvdec->clamp_luma, dvdec->clamp_chroma); dv_decoder_new (0, dvdec->clamp_luma, dvdec->clamp_chroma);
dvdec->decoder->quality = qualities[dvdec->quality]; dvdec->decoder->quality = qualities[dvdec->quality];
dvdec->audio_offset = 0; dvdec->audio_offset = 0;
dvdec->framecount = 0;
/* /*
* Enable this function call when libdv2 0.100 or higher is more * Enable this function call when libdv2 0.100 or higher is more
* common * common
@ -1057,6 +1075,9 @@ gst_dvdec_set_property (GObject * object, guint prop_id, const GValue * value,
if ((dvdec->quality < 0) || (dvdec->quality > 5)) if ((dvdec->quality < 0) || (dvdec->quality > 5))
dvdec->quality = 0; dvdec->quality = 0;
break; break;
case ARG_DECODE_NTH:
dvdec->drop_factor = g_value_get_int (value);
break;
default: default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break; break;
@ -1084,6 +1105,9 @@ gst_dvdec_get_property (GObject * object, guint prop_id, GValue * value,
case ARG_QUALITY: case ARG_QUALITY:
g_value_set_enum (value, dvdec->quality); g_value_set_enum (value, dvdec->quality);
break; break;
case ARG_DECODE_NTH:
g_value_set_int (value, dvdec->drop_factor);
break;
default: default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break; break;

2
ext/dv/gstdvdec.h
View file

@ -63,6 +63,8 @@ struct _GstDVDec {
gint channels; gint channels;
gint length; gint length;
gint framecount;
gint drop_factor;
guint64 next_ts; guint64 next_ts;
guint64 audio_offset; guint64 audio_offset;
guint64 end_position; guint64 end_position;