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Make videotestsrc ! interlace ! $anything work again. Problem was that upstream filter caps were passed which contained interlace-mode=progressive, which doesn't intersect too well with interlace's source pad template caps, leading to not-negotiated errors.
885 lines
26 KiB
C
885 lines
26 KiB
C
/* GStreamer
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* Copyright (C) 2010 David A. Schleef <ds@schleef.org>
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* Copyright (C) 2010 Robert Swain <robert.swain@collabora.co.uk>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-interlace
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*
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* The interlace element takes a non-interlaced raw video stream as input,
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* creates fields out of each frame, then combines fields into interlaced
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* frames to output as an interlaced video stream. It can also produce
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* telecined streams from progressive input.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch -v videotestsrc pattern=ball ! interlace ! xvimagesink
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* ]|
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* This pipeline illustrates the combing effects caused by displaying
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* two interlaced fields as one progressive frame.
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* |[
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* gst-launch -v filesrc location=/path/to/file ! decodebin ! videorate !
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* videoscale ! video/x-raw,format=\(string\)I420,width=720,height=480,
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* framerate=60000/1001,pixel-aspect-ratio=11/10 !
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* interlace top-field-first=false ! ...
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* ]|
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* This pipeline converts a progressive video stream into an interlaced
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* stream suitable for standard definition NTSC.
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* |[
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* gst-launch -v videotestsrc pattern=ball ! video/x-raw,
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* format=\(string\)I420,width=720,height=480,framerate=24000/1001,
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* pixel-aspect-ratio=11/10 ! interlace pattern=2:3 !
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* ...
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* ]|
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* This pipeline converts a 24 frames per second progressive film stream into a
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* 30000/1001 2:3:2:3... pattern telecined stream suitable for displaying film
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* content on NTSC.
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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GST_DEBUG_CATEGORY (gst_interlace_debug);
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#define GST_CAT_DEFAULT gst_interlace_debug
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#define GST_TYPE_INTERLACE \
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(gst_interlace_get_type())
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#define GST_INTERLACE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_INTERLACE,GstInterlace))
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#define GST_INTERLACE_DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_INTERLACE,GstInterlaceClass))
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#define GST_IS_GST_INTERLACE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_INTERLACE))
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#define GST_IS_GST_INTERLACE_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_INTERLACE))
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typedef struct _GstInterlace GstInterlace;
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typedef struct _GstInterlaceClass GstInterlaceClass;
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struct _GstInterlace
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{
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GstElement element;
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GstPad *srcpad;
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GstPad *sinkpad;
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/* properties */
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gboolean top_field_first;
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gint pattern;
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gboolean allow_rff;
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/* state */
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GstVideoInfo info;
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int src_fps_n;
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int src_fps_d;
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GstBuffer *stored_frame;
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gint stored_fields;
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gint phase_index;
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int field_index; /* index of the next field to push, 0=top 1=bottom */
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GstClockTime timebase;
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int fields_since_timebase;
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guint pattern_offset; /* initial offset into the pattern */
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};
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struct _GstInterlaceClass
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{
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GstElementClass element_class;
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};
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enum
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{
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PROP_0,
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PROP_TOP_FIELD_FIRST,
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PROP_PATTERN,
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PROP_PATTERN_OFFSET,
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PROP_ALLOW_RFF
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};
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typedef enum
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{
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GST_INTERLACE_PATTERN_1_1,
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GST_INTERLACE_PATTERN_2_2,
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GST_INTERLACE_PATTERN_2_3,
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GST_INTERLACE_PATTERN_2_3_3_2,
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GST_INTERLACE_PATTERN_EURO,
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GST_INTERLACE_PATTERN_3_4R3,
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GST_INTERLACE_PATTERN_3R7_4,
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GST_INTERLACE_PATTERN_3_3_4,
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GST_INTERLACE_PATTERN_3_3,
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GST_INTERLACE_PATTERN_3_2R4,
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GST_INTERLACE_PATTERN_1_2R4,
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} GstInterlacePattern;
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#define GST_INTERLACE_PATTERN (gst_interlace_pattern_get_type ())
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static GType
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gst_interlace_pattern_get_type (void)
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{
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static GType interlace_pattern_type = 0;
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static const GEnumValue pattern_types[] = {
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{GST_INTERLACE_PATTERN_1_1, "1:1 (e.g. 60p -> 60i)", "1:1"},
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{GST_INTERLACE_PATTERN_2_2, "2:2 (e.g. 30p -> 60i)", "2:2"},
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{GST_INTERLACE_PATTERN_2_3, "2:3 (e.g. 24p -> 60i telecine)", "2:3"},
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{GST_INTERLACE_PATTERN_2_3_3_2, "2:3:3:2 (e.g. 24p -> 60i telecine)",
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"2:3:3:2"},
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{GST_INTERLACE_PATTERN_EURO, "Euro 2-11:3 (e.g. 24p -> 50i telecine)",
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"2-11:3"},
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{GST_INTERLACE_PATTERN_3_4R3, "3:4-3 (e.g. 16p -> 60i telecine)", "3:4-3"},
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{GST_INTERLACE_PATTERN_3R7_4, "3-7:4 (e.g. 16p -> 50i telecine)", "3-7:4"},
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{GST_INTERLACE_PATTERN_3_3_4, "3:3:4 (e.g. 18p -> 60i telecine)", "3:3:4"},
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{GST_INTERLACE_PATTERN_3_3, "3:3 (e.g. 20p -> 60i telecine)", "3:3"},
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{GST_INTERLACE_PATTERN_3_2R4, "3:2-4 (e.g. 27.5p -> 60i telecine)",
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"3:2-4"},
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{GST_INTERLACE_PATTERN_1_2R4, "1:2-4 (e.g. 27.5p -> 50i telecine)",
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"1:2-4"},
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{0, NULL, NULL}
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};
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if (!interlace_pattern_type) {
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interlace_pattern_type =
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g_enum_register_static ("GstInterlacePattern", pattern_types);
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}
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return interlace_pattern_type;
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}
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static GstStaticPadTemplate gst_interlace_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE
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("{AYUV,YUY2,UYVY,I420,YV12,Y42B,Y444,NV12,NV21}")
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",interlace-mode={interleaved,mixed}")
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);
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static GstStaticPadTemplate gst_interlace_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE
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("{AYUV,YUY2,UYVY,I420,YV12,Y42B,Y444,NV12,NV21}")
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",interlace-mode=progressive")
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);
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GType gst_interlace_get_type (void);
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static void gst_interlace_finalize (GObject * obj);
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static void gst_interlace_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_interlace_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static gboolean gst_interlace_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_interlace_sink_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static GstFlowReturn gst_interlace_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buffer);
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static gboolean gst_interlace_src_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static GstStateChangeReturn gst_interlace_change_state (GstElement * element,
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GstStateChange transition);
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#define gst_interlace_parent_class parent_class
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G_DEFINE_TYPE (GstInterlace, gst_interlace, GST_TYPE_ELEMENT);
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static void
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gst_interlace_class_init (GstInterlaceClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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object_class->set_property = gst_interlace_set_property;
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object_class->get_property = gst_interlace_get_property;
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object_class->finalize = gst_interlace_finalize;
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g_object_class_install_property (object_class, PROP_TOP_FIELD_FIRST,
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g_param_spec_boolean ("top-field-first", "top field first",
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"Interlaced stream should be top field first", FALSE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (object_class, PROP_PATTERN,
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g_param_spec_enum ("field-pattern", "Field pattern",
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"The output field pattern", GST_INTERLACE_PATTERN,
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GST_INTERLACE_PATTERN_2_3,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (object_class, PROP_PATTERN_OFFSET,
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g_param_spec_uint ("pattern-offset", "Pattern offset",
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"The initial field pattern offset. Counts from 0.",
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0, 12, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (object_class, PROP_ALLOW_RFF,
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g_param_spec_boolean ("allow-rff", "Allow Repeat-First-Field flags",
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"Allow generation of buffers with RFF flag set, i.e., duration of 3 fields",
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FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_set_static_metadata (element_class,
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"Interlace filter", "Filter/Video",
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"Creates an interlaced video from progressive frames",
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"David Schleef <ds@schleef.org>");
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_interlace_sink_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_interlace_src_template));
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element_class->change_state = gst_interlace_change_state;
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}
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static void
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gst_interlace_finalize (GObject * obj)
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{
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G_OBJECT_CLASS (parent_class)->finalize (obj);
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}
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static void
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gst_interlace_reset (GstInterlace * interlace)
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{
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interlace->phase_index = interlace->pattern_offset;
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interlace->timebase = GST_CLOCK_TIME_NONE;
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interlace->field_index = 0;
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if (interlace->stored_frame) {
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gst_buffer_unref (interlace->stored_frame);
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interlace->stored_frame = NULL;
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}
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}
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static void
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gst_interlace_init (GstInterlace * interlace)
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{
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GST_DEBUG ("gst_interlace_init");
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interlace->sinkpad =
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gst_pad_new_from_static_template (&gst_interlace_sink_template, "sink");
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gst_pad_set_chain_function (interlace->sinkpad, gst_interlace_chain);
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gst_pad_set_event_function (interlace->sinkpad, gst_interlace_sink_event);
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gst_pad_set_query_function (interlace->sinkpad, gst_interlace_sink_query);
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gst_element_add_pad (GST_ELEMENT (interlace), interlace->sinkpad);
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interlace->srcpad =
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gst_pad_new_from_static_template (&gst_interlace_src_template, "src");
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gst_pad_set_query_function (interlace->srcpad, gst_interlace_src_query);
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gst_element_add_pad (GST_ELEMENT (interlace), interlace->srcpad);
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interlace->top_field_first = FALSE;
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interlace->allow_rff = FALSE;
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interlace->pattern = GST_INTERLACE_PATTERN_2_3;
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interlace->pattern_offset = 0;
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gst_interlace_reset (interlace);
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}
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typedef struct _PulldownFormat PulldownFormat;
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struct _PulldownFormat
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{
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const gchar *name;
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/* ratio between outgoing field rate / 2 and incoming frame rate.
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* I.e., 24p -> 60i is 1.25 */
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int ratio_n, ratio_d;
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int n_fields[13];
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};
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static const PulldownFormat formats[] = {
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/* 60p -> 60i or 50p -> 50i */
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{"1:1", 1, 2, {1}},
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/* 30p -> 60i or 25p -> 50i */
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{"2:2", 1, 1, {2}},
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/* 24p -> 60i telecine */
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{"2:3", 5, 4, {2, 3,}},
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{"2:3:3:2", 5, 4, {2, 3, 3, 2,}},
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/* 24p -> 50i Euro pulldown */
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{"2-11:3", 25, 24, {2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3,}},
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/* 16p (16000/1001) -> 60i (NTSC 30000/1001) */
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{"3:4-3", 15, 8, {3, 4, 4, 4,}},
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/* 16p -> 50i (PAL) */
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{"3-7:4", 25, 16, {3, 3, 3, 3, 3, 3, 3, 4,}},
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/* 18p to NTSC 60i */
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{"3:3:4", 5, 3, {3, 3, 4,}},
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/* 20p to NTSC 60i */
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{"3:3", 3, 2, {3, 3,}},
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/* 27.5 to NTSC 60i */
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{"3:2-4", 11, 10, {3, 2, 2, 2, 2,}},
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/* 27.5 to PAL 50i */
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{"1:2-4", 9, 10, {1, 2, 2, 2, 2,}},
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};
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static void
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gst_interlace_decorate_buffer (GstInterlace * interlace, GstBuffer * buf,
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int n_fields, gboolean interlaced)
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{
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/* field duration = src_fps_d / (2 * src_fps_n) */
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if (interlace->src_fps_n == 0) {
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/* If we don't know the fps, we can't generate timestamps/durations */
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GST_BUFFER_DTS (buf) = GST_CLOCK_TIME_NONE;
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GST_BUFFER_PTS (buf) = GST_CLOCK_TIME_NONE;
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GST_BUFFER_DURATION (buf) = GST_CLOCK_TIME_NONE;
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} else {
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GST_BUFFER_DTS (buf) = interlace->timebase +
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gst_util_uint64_scale (GST_SECOND,
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interlace->src_fps_d * interlace->fields_since_timebase,
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interlace->src_fps_n * 2);
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GST_BUFFER_PTS (buf) = GST_BUFFER_DTS (buf);
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GST_BUFFER_DURATION (buf) =
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gst_util_uint64_scale (GST_SECOND, interlace->src_fps_d * n_fields,
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interlace->src_fps_n * 2);
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}
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if (interlace->field_index == 0) {
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GST_BUFFER_FLAG_SET (buf, GST_VIDEO_BUFFER_FLAG_TFF);
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}
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if (n_fields == 3) {
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GST_BUFFER_FLAG_SET (buf, GST_VIDEO_BUFFER_FLAG_RFF);
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}
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if (n_fields == 1) {
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GST_BUFFER_FLAG_SET (buf, GST_VIDEO_BUFFER_FLAG_ONEFIELD);
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}
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if (interlace->pattern > GST_INTERLACE_PATTERN_2_2 && n_fields == 2
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&& interlaced) {
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GST_BUFFER_FLAG_SET (buf, GST_VIDEO_BUFFER_FLAG_INTERLACED);
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}
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}
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static gboolean
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gst_interlace_setcaps (GstInterlace * interlace, GstCaps * caps)
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{
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gboolean ret;
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GstVideoInfo info;
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GstCaps *othercaps;
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const PulldownFormat *pdformat;
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if (!gst_video_info_from_caps (&info, caps))
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goto caps_error;
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othercaps = gst_caps_copy (caps);
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pdformat = &formats[interlace->pattern];
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interlace->phase_index = interlace->pattern_offset;
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interlace->src_fps_n = info.fps_n * pdformat->ratio_n;
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interlace->src_fps_d = info.fps_d * pdformat->ratio_d;
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if (interlace->pattern > GST_INTERLACE_PATTERN_2_2) {
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gst_caps_set_simple (othercaps, "interlace-mode", G_TYPE_STRING, "mixed",
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NULL);
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} else {
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gst_caps_set_simple (othercaps, "interlace-mode", G_TYPE_STRING,
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"interleaved", NULL);
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}
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gst_caps_set_simple (othercaps, "framerate", GST_TYPE_FRACTION,
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interlace->src_fps_n, interlace->src_fps_d, NULL);
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ret = gst_pad_set_caps (interlace->srcpad, othercaps);
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gst_caps_unref (othercaps);
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interlace->info = info;
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return ret;
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caps_error:
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{
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GST_DEBUG_OBJECT (interlace, "error parsing caps");
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return FALSE;
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}
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}
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static gboolean
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gst_interlace_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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gboolean ret;
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GstInterlace *interlace;
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interlace = GST_INTERLACE (parent);
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_FLUSH_START:
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GST_DEBUG_OBJECT (interlace, "handling FLUSH_START");
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ret = gst_pad_push_event (interlace->srcpad, event);
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break;
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case GST_EVENT_FLUSH_STOP:
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GST_DEBUG_OBJECT (interlace, "handling FLUSH_STOP");
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gst_interlace_reset (interlace);
|
|
ret = gst_pad_push_event (interlace->srcpad, event);
|
|
break;
|
|
case GST_EVENT_EOS:
|
|
#if 0
|
|
/* FIXME revive this when we output ONEFIELD and RFF buffers */
|
|
{
|
|
gint num_fields;
|
|
const PulldownFormat *format = &formats[interlace->pattern];
|
|
|
|
num_fields =
|
|
format->n_fields[interlace->phase_index] -
|
|
interlace->stored_fields_pushed;
|
|
interlace->stored_fields_pushed = 0;
|
|
|
|
/* on EOS we want to push as many sane frames as are left */
|
|
while (num_fields > 1) {
|
|
GstBuffer *output_buffer;
|
|
|
|
/* make metadata writable before editing it */
|
|
interlace->stored_frame =
|
|
gst_buffer_make_metadata_writable (interlace->stored_frame);
|
|
num_fields -= 2;
|
|
|
|
gst_interlace_decorate_buffer (interlace, interlace->stored_frame,
|
|
n_fields, FALSE);
|
|
|
|
/* ref output_buffer/stored frame because we want to keep it for now
|
|
* and pushing gives away a ref */
|
|
output_buffer = gst_buffer_ref (interlace->stored_frame);
|
|
if (gst_pad_push (interlace->srcpad, output_buffer)) {
|
|
GST_DEBUG_OBJECT (interlace, "Failed to push buffer %p",
|
|
output_buffer);
|
|
return FALSE;
|
|
}
|
|
output_buffer = NULL;
|
|
|
|
if (num_fields <= 1) {
|
|
gst_buffer_unref (interlace->stored_frame);
|
|
interlace->stored_frame = NULL;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* increment the phase index */
|
|
interlace->phase_index++;
|
|
if (!format->n_fields[interlace->phase_index]) {
|
|
interlace->phase_index = 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
ret = gst_pad_push_event (interlace->srcpad, event);
|
|
break;
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
GstCaps *caps;
|
|
|
|
gst_event_parse_caps (event, &caps);
|
|
ret = gst_interlace_setcaps (interlace, caps);
|
|
gst_event_unref (event);
|
|
break;
|
|
}
|
|
default:
|
|
ret = gst_pad_push_event (interlace->srcpad, event);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_interlace_getcaps (GstPad * pad, GstInterlace * interlace, GstCaps * filter)
|
|
{
|
|
GstPad *otherpad;
|
|
GstCaps *othercaps, *tcaps;
|
|
GstCaps *icaps;
|
|
GstCaps *clean_filter = NULL;
|
|
const char *mode;
|
|
guint i;
|
|
|
|
otherpad =
|
|
(pad == interlace->srcpad) ? interlace->sinkpad : interlace->srcpad;
|
|
|
|
if (filter != NULL) {
|
|
clean_filter = gst_caps_copy (filter);
|
|
for (i = 0; i < gst_caps_get_size (clean_filter); ++i) {
|
|
GstStructure *s;
|
|
|
|
s = gst_caps_get_structure (clean_filter, i);
|
|
gst_structure_remove_field (s, "interlace-mode");
|
|
}
|
|
}
|
|
|
|
tcaps = gst_pad_get_pad_template_caps (otherpad);
|
|
othercaps = gst_pad_peer_query_caps (otherpad, clean_filter);
|
|
if (othercaps) {
|
|
icaps = gst_caps_intersect (othercaps, tcaps);
|
|
gst_caps_unref (othercaps);
|
|
} else {
|
|
icaps = tcaps;
|
|
}
|
|
|
|
if (clean_filter) {
|
|
othercaps = gst_caps_intersect (icaps, clean_filter);
|
|
gst_caps_unref (icaps);
|
|
icaps = othercaps;
|
|
}
|
|
|
|
icaps = gst_caps_make_writable (icaps);
|
|
if (interlace->pattern > GST_INTERLACE_PATTERN_2_2) {
|
|
mode = "mixed";
|
|
} else {
|
|
mode = "interleaved";
|
|
}
|
|
gst_caps_set_simple (icaps, "interlace-mode", G_TYPE_STRING,
|
|
pad == interlace->srcpad ? mode : "progressive", NULL);
|
|
|
|
gst_caps_unref (tcaps);
|
|
|
|
if (clean_filter)
|
|
gst_caps_unref (clean_filter);
|
|
|
|
return icaps;
|
|
}
|
|
|
|
static gboolean
|
|
gst_interlace_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
gboolean ret;
|
|
GstInterlace *interlace;
|
|
|
|
interlace = GST_INTERLACE (parent);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_CAPS:
|
|
{
|
|
GstCaps *filter, *caps;
|
|
|
|
gst_query_parse_caps (query, &filter);
|
|
caps = gst_interlace_getcaps (pad, interlace, filter);
|
|
gst_query_set_caps_result (query, caps);
|
|
gst_caps_unref (caps);
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
default:
|
|
ret = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_interlace_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
gboolean ret;
|
|
GstInterlace *interlace;
|
|
|
|
interlace = GST_INTERLACE (parent);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_CAPS:
|
|
{
|
|
GstCaps *filter, *caps;
|
|
|
|
gst_query_parse_caps (query, &filter);
|
|
caps = gst_interlace_getcaps (pad, interlace, filter);
|
|
gst_query_set_caps_result (query, caps);
|
|
gst_caps_unref (caps);
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
default:
|
|
ret = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
copy_field (GstInterlace * interlace, GstBuffer * dest, GstBuffer * src,
|
|
int field_index)
|
|
{
|
|
GstVideoInfo *info = &interlace->info;
|
|
gint i, j, n_planes;
|
|
guint8 *d, *s;
|
|
GstVideoFrame dframe, sframe;
|
|
|
|
if (!gst_video_frame_map (&dframe, info, dest, GST_MAP_WRITE))
|
|
goto dest_map_failed;
|
|
|
|
if (!gst_video_frame_map (&sframe, info, src, GST_MAP_READ))
|
|
goto src_map_failed;
|
|
|
|
n_planes = GST_VIDEO_FRAME_N_PLANES (&dframe);
|
|
|
|
for (i = 0; i < n_planes; i++) {
|
|
gint cheight, cwidth;
|
|
gint ss, ds;
|
|
|
|
d = GST_VIDEO_FRAME_PLANE_DATA (&dframe, i);
|
|
s = GST_VIDEO_FRAME_PLANE_DATA (&sframe, i);
|
|
|
|
ds = GST_VIDEO_FRAME_PLANE_STRIDE (&dframe, i);
|
|
ss = GST_VIDEO_FRAME_PLANE_STRIDE (&sframe, i);
|
|
|
|
d += field_index * ds;
|
|
s += field_index * ss;
|
|
|
|
cheight = GST_VIDEO_FRAME_COMP_HEIGHT (&dframe, i);
|
|
cwidth = MIN (ABS (ss), ABS (ds));
|
|
|
|
for (j = field_index; j < cheight; j += 2) {
|
|
memcpy (d, s, cwidth);
|
|
d += ds * 2;
|
|
s += ss * 2;
|
|
}
|
|
}
|
|
|
|
gst_video_frame_unmap (&dframe);
|
|
gst_video_frame_unmap (&sframe);
|
|
return;
|
|
|
|
dest_map_failed:
|
|
{
|
|
GST_ERROR_OBJECT (interlace, "failed to map dest");
|
|
return;
|
|
}
|
|
src_map_failed:
|
|
{
|
|
GST_ERROR_OBJECT (interlace, "failed to map src");
|
|
gst_video_frame_unmap (&dframe);
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
static GstFlowReturn
|
|
gst_interlace_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
|
|
{
|
|
GstInterlace *interlace = GST_INTERLACE (parent);
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
gint num_fields = 0;
|
|
int current_fields;
|
|
const PulldownFormat *format;
|
|
GstClockTime timestamp;
|
|
|
|
timestamp = GST_BUFFER_TIMESTAMP (buffer);
|
|
|
|
GST_DEBUG ("Received buffer at %" GST_TIME_FORMAT, GST_TIME_ARGS (timestamp));
|
|
|
|
GST_DEBUG ("duration %" GST_TIME_FORMAT " flags %04x %s %s %s",
|
|
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)),
|
|
GST_BUFFER_FLAGS (buffer),
|
|
(GST_BUFFER_FLAGS (buffer) & GST_VIDEO_BUFFER_FLAG_TFF) ? "tff" : "",
|
|
(GST_BUFFER_FLAGS (buffer) & GST_VIDEO_BUFFER_FLAG_RFF) ? "rff" : "",
|
|
(GST_BUFFER_FLAGS (buffer) & GST_VIDEO_BUFFER_FLAG_ONEFIELD) ? "onefield"
|
|
: "");
|
|
|
|
if (GST_BUFFER_FLAGS (buffer) & GST_BUFFER_FLAG_DISCONT) {
|
|
GST_DEBUG ("discont");
|
|
|
|
if (interlace->stored_frame) {
|
|
gst_buffer_unref (interlace->stored_frame);
|
|
}
|
|
interlace->stored_frame = NULL;
|
|
interlace->stored_fields = 0;
|
|
|
|
if (interlace->top_field_first) {
|
|
interlace->field_index = 0;
|
|
} else {
|
|
interlace->field_index = 1;
|
|
}
|
|
}
|
|
|
|
if (interlace->timebase == GST_CLOCK_TIME_NONE) {
|
|
/* get the initial ts */
|
|
interlace->timebase = timestamp;
|
|
}
|
|
|
|
format = &formats[interlace->pattern];
|
|
|
|
if (interlace->stored_fields == 0
|
|
&& interlace->phase_index == interlace->pattern_offset
|
|
&& GST_CLOCK_TIME_IS_VALID (timestamp)) {
|
|
interlace->timebase = timestamp;
|
|
interlace->fields_since_timebase = 0;
|
|
}
|
|
|
|
if (!format->n_fields[interlace->phase_index]) {
|
|
interlace->phase_index = 0;
|
|
}
|
|
|
|
current_fields = format->n_fields[interlace->phase_index];
|
|
/* increment the phase index */
|
|
interlace->phase_index++;
|
|
GST_DEBUG ("incoming buffer assigned %d fields", current_fields);
|
|
|
|
num_fields = interlace->stored_fields + current_fields;
|
|
while (num_fields >= 2) {
|
|
GstBuffer *output_buffer;
|
|
int n_output_fields;
|
|
gboolean interlaced = FALSE;
|
|
|
|
GST_DEBUG ("have %d fields, %d current, %d stored",
|
|
num_fields, current_fields, interlace->stored_fields);
|
|
|
|
if (interlace->stored_fields > 0) {
|
|
GST_DEBUG ("1 field from stored, 1 from current");
|
|
|
|
output_buffer = gst_buffer_new_and_alloc (gst_buffer_get_size (buffer));
|
|
/* take the first field from the stored frame */
|
|
copy_field (interlace, output_buffer, interlace->stored_frame,
|
|
interlace->field_index);
|
|
interlace->stored_fields--;
|
|
/* take the second field from the incoming buffer */
|
|
copy_field (interlace, output_buffer, buffer, interlace->field_index ^ 1);
|
|
current_fields--;
|
|
n_output_fields = 2;
|
|
interlaced = TRUE;
|
|
} else {
|
|
output_buffer = gst_buffer_make_writable (gst_buffer_ref (buffer));
|
|
if (num_fields >= 3 && interlace->allow_rff) {
|
|
GST_DEBUG ("3 fields from current");
|
|
/* take both fields from incoming buffer */
|
|
current_fields -= 3;
|
|
n_output_fields = 3;
|
|
} else {
|
|
GST_DEBUG ("2 fields from current");
|
|
/* take both buffers from incoming buffer */
|
|
current_fields -= 2;
|
|
n_output_fields = 2;
|
|
}
|
|
}
|
|
num_fields -= n_output_fields;
|
|
|
|
gst_interlace_decorate_buffer (interlace, output_buffer, n_output_fields,
|
|
interlaced);
|
|
interlace->fields_since_timebase += n_output_fields;
|
|
interlace->field_index ^= (n_output_fields & 1);
|
|
|
|
GST_DEBUG_OBJECT (interlace, "output timestamp %" GST_TIME_FORMAT
|
|
" duration %" GST_TIME_FORMAT " flags %04x %s %s %s",
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (output_buffer)),
|
|
GST_TIME_ARGS (GST_BUFFER_DURATION (output_buffer)),
|
|
GST_BUFFER_FLAGS (output_buffer),
|
|
(GST_BUFFER_FLAGS (output_buffer) & GST_VIDEO_BUFFER_FLAG_TFF) ? "tff" :
|
|
"",
|
|
(GST_BUFFER_FLAGS (output_buffer) & GST_VIDEO_BUFFER_FLAG_RFF) ? "rff" :
|
|
"",
|
|
(GST_BUFFER_FLAGS (output_buffer) & GST_VIDEO_BUFFER_FLAG_ONEFIELD) ?
|
|
"onefield" : "");
|
|
|
|
ret = gst_pad_push (interlace->srcpad, output_buffer);
|
|
if (ret != GST_FLOW_OK) {
|
|
GST_DEBUG_OBJECT (interlace, "Failed to push buffer %p", output_buffer);
|
|
break;
|
|
}
|
|
}
|
|
|
|
GST_DEBUG ("done. %d fields remaining", current_fields);
|
|
|
|
if (interlace->stored_frame) {
|
|
gst_buffer_unref (interlace->stored_frame);
|
|
interlace->stored_frame = NULL;
|
|
interlace->stored_fields = 0;
|
|
}
|
|
|
|
if (current_fields > 0) {
|
|
interlace->stored_frame = buffer;
|
|
interlace->stored_fields = current_fields;
|
|
} else {
|
|
gst_buffer_unref (buffer);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_interlace_set_property (GObject * object,
|
|
guint prop_id, const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstInterlace *interlace = GST_INTERLACE (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_TOP_FIELD_FIRST:
|
|
interlace->top_field_first = g_value_get_boolean (value);
|
|
break;
|
|
case PROP_PATTERN:
|
|
interlace->pattern = g_value_get_enum (value);
|
|
break;
|
|
case PROP_PATTERN_OFFSET:
|
|
interlace->pattern_offset = g_value_get_uint (value);
|
|
break;
|
|
case PROP_ALLOW_RFF:
|
|
interlace->allow_rff = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_interlace_get_property (GObject * object,
|
|
guint prop_id, GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstInterlace *interlace = GST_INTERLACE (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_TOP_FIELD_FIRST:
|
|
g_value_set_boolean (value, interlace->top_field_first);
|
|
break;
|
|
case PROP_PATTERN:
|
|
g_value_set_enum (value, interlace->pattern);
|
|
break;
|
|
case PROP_PATTERN_OFFSET:
|
|
g_value_set_uint (value, interlace->pattern_offset);
|
|
break;
|
|
case PROP_ALLOW_RFF:
|
|
g_value_set_boolean (value, interlace->allow_rff);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_interlace_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
//GstInterlace *interlace = GST_INTERLACE (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
//gst_interlace_reset (interlace);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_interlace_debug, "interlace", 0,
|
|
"interlace element");
|
|
|
|
return gst_element_register (plugin, "interlace", GST_RANK_NONE,
|
|
GST_TYPE_INTERLACE);
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
interlace,
|
|
"Create an interlaced video stream",
|
|
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
|