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Remove unused variable 'framecount' from dvdemux https://bugzilla.gnome.org/show_bug.cgi?id=753008
1911 lines
56 KiB
C
1911 lines
56 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* <2005> Wim Taymans <wim@fluendo.com>
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <math.h>
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#include <gst/audio/audio.h>
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#include "gstdvdemux.h"
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#include "gstsmptetimecode.h"
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/**
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* SECTION:element-dvdemux
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*
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* dvdemux splits raw DV into its audio and video components. The audio will be
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* decoded raw samples and the video will be encoded DV video.
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*
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* This element can operate in both push and pull mode depending on the
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* capabilities of the upstream peer.
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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-1.0 filesrc location=test.dv ! dvdemux name=demux ! queue ! audioconvert ! alsasink demux. ! queue ! dvdec ! xvimagesink
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* ]| This pipeline decodes and renders the raw DV stream to an audio and a videosink.
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* </refsect2>
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*/
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/* DV output has two modes, normal and wide. The resolution is the same in both
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* cases: 720 pixels wide by 576 pixels tall in PAL format, and 720x480 for
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* NTSC.
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*
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* Each of the modes has its own pixel aspect ratio, which is fixed in practice
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* by ITU-R BT.601 (also known as "CCIR-601" or "Rec.601"). Or so claims a
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* reference that I culled from the reliable "internet",
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* http://www.mir.com/DMG/aspect.html. Normal PAL is 59/54 and normal NTSC is
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* 10/11. Because the pixel resolution is the same for both cases, we can get
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* the pixel aspect ratio for wide recordings by multiplying by the ratio of
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* display aspect ratios, 16/9 (for wide) divided by 4/3 (for normal):
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*
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* Wide NTSC: 10/11 * (16/9)/(4/3) = 40/33
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* Wide PAL: 59/54 * (16/9)/(4/3) = 118/81
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*
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* However, the pixel resolution coming out of a DV source does not combine with
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* the standard pixel aspect ratios to give a proper display aspect ratio. An
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* image 480 pixels tall, with a 4:3 display aspect ratio, will be 768 pixels
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* wide. But, if we take the normal PAL aspect ratio of 59/54, and multiply it
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* with the width of the DV image (720 pixels), we get 786.666..., which is
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* nonintegral and too wide. The camera is not outputting a 4:3 image.
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*
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* If the video sink for this stream has fixed dimensions (such as for
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* fullscreen playback, or for a java applet in a web page), you then have two
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* choices. Either you show the whole image, but pad the image with black
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* borders on the top and bottom (like watching a widescreen video on a 4:3
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* device), or you crop the video to the proper ratio. Apparently the latter is
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* the standard practice.
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*
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* For its part, GStreamer is concerned with accuracy and preservation of
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* information. This element outputs the 720x576 or 720x480 video that it
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* recieves, noting the proper aspect ratio. This should not be a problem for
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* windowed applications, which can change size to fit the video. Applications
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* with fixed size requirements should decide whether to crop or pad which
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* an element such as videobox can do.
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*/
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#define NTSC_HEIGHT 480
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#define NTSC_BUFFER 120000
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#define NTSC_FRAMERATE_NUMERATOR 30000
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#define NTSC_FRAMERATE_DENOMINATOR 1001
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#define PAL_HEIGHT 576
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#define PAL_BUFFER 144000
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#define PAL_FRAMERATE_NUMERATOR 25
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#define PAL_FRAMERATE_DENOMINATOR 1
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#define PAL_NORMAL_PAR_X 59
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#define PAL_NORMAL_PAR_Y 54
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#define PAL_WIDE_PAR_X 118
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#define PAL_WIDE_PAR_Y 81
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#define NTSC_NORMAL_PAR_X 10
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#define NTSC_NORMAL_PAR_Y 11
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#define NTSC_WIDE_PAR_X 40
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#define NTSC_WIDE_PAR_Y 33
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GST_DEBUG_CATEGORY_STATIC (dvdemux_debug);
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#define GST_CAT_DEFAULT dvdemux_debug
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static GstStaticPadTemplate sink_temp = 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 ("video/x-dv, systemstream = (boolean) true")
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);
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static GstStaticPadTemplate video_src_temp = GST_STATIC_PAD_TEMPLATE ("video",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS ("video/x-dv, systemstream = (boolean) false")
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);
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static GstStaticPadTemplate audio_src_temp = GST_STATIC_PAD_TEMPLATE ("audio",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS ("audio/x-raw, "
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"format = (string) " GST_AUDIO_NE (S16) ", "
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"layout = (string) interleaved, "
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"rate = (int) { 32000, 44100, 48000 }, " "channels = (int) {2, 4}")
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);
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#define gst_dvdemux_parent_class parent_class
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G_DEFINE_TYPE (GstDVDemux, gst_dvdemux, GST_TYPE_ELEMENT);
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static void gst_dvdemux_finalize (GObject * object);
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/* query functions */
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static gboolean gst_dvdemux_src_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static gboolean gst_dvdemux_sink_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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/* convert functions */
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static gboolean gst_dvdemux_sink_convert (GstDVDemux * demux,
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GstFormat src_format, gint64 src_value, GstFormat dest_format,
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gint64 * dest_value);
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static gboolean gst_dvdemux_src_convert (GstDVDemux * demux, GstPad * pad,
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GstFormat src_format, gint64 src_value, GstFormat dest_format,
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gint64 * dest_value);
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/* event functions */
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static gboolean gst_dvdemux_send_event (GstElement * element, GstEvent * event);
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static gboolean gst_dvdemux_handle_src_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_dvdemux_handle_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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/* scheduling functions */
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static void gst_dvdemux_loop (GstPad * pad);
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static GstFlowReturn gst_dvdemux_flush (GstDVDemux * dvdemux);
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static GstFlowReturn gst_dvdemux_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buffer);
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/* state change functions */
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static gboolean gst_dvdemux_sink_activate (GstPad * sinkpad,
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GstObject * parent);
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static gboolean gst_dvdemux_sink_activate_mode (GstPad * sinkpad,
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GstObject * parent, GstPadMode mode, gboolean active);
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static GstStateChangeReturn gst_dvdemux_change_state (GstElement * element,
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GstStateChange transition);
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static void
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gst_dvdemux_class_init (GstDVDemuxClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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gobject_class = (GObjectClass *) klass;
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gstelement_class = (GstElementClass *) klass;
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gobject_class->finalize = gst_dvdemux_finalize;
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gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_dvdemux_change_state);
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gstelement_class->send_event = GST_DEBUG_FUNCPTR (gst_dvdemux_send_event);
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sink_temp));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&video_src_temp));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&audio_src_temp));
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gst_element_class_set_static_metadata (gstelement_class,
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"DV system stream demuxer", "Codec/Demuxer",
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"Uses libdv to separate DV audio from DV video (libdv.sourceforge.net)",
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"Erik Walthinsen <omega@cse.ogi.edu>, Wim Taymans <wim@fluendo.com>");
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GST_DEBUG_CATEGORY_INIT (dvdemux_debug, "dvdemux", 0, "DV demuxer element");
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}
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static void
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gst_dvdemux_init (GstDVDemux * dvdemux)
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{
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gint i;
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dvdemux->sinkpad = gst_pad_new_from_static_template (&sink_temp, "sink");
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/* we can operate in pull and push mode so we install
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* a custom activate function */
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gst_pad_set_activate_function (dvdemux->sinkpad,
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GST_DEBUG_FUNCPTR (gst_dvdemux_sink_activate));
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/* the function to activate in push mode */
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gst_pad_set_activatemode_function (dvdemux->sinkpad,
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GST_DEBUG_FUNCPTR (gst_dvdemux_sink_activate_mode));
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/* for push mode, this is the chain function */
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gst_pad_set_chain_function (dvdemux->sinkpad,
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GST_DEBUG_FUNCPTR (gst_dvdemux_chain));
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/* handling events (in push mode only) */
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gst_pad_set_event_function (dvdemux->sinkpad,
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GST_DEBUG_FUNCPTR (gst_dvdemux_handle_sink_event));
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/* query functions */
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gst_pad_set_query_function (dvdemux->sinkpad,
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GST_DEBUG_FUNCPTR (gst_dvdemux_sink_query));
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/* now add the pad */
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gst_element_add_pad (GST_ELEMENT (dvdemux), dvdemux->sinkpad);
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dvdemux->adapter = gst_adapter_new ();
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/* we need 4 temp buffers for audio decoding which are of a static
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* size and which we can allocate here */
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for (i = 0; i < 4; i++) {
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dvdemux->audio_buffers[i] =
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(gint16 *) g_malloc (DV_AUDIO_MAX_SAMPLES * sizeof (gint16));
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}
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}
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static void
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gst_dvdemux_finalize (GObject * object)
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{
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GstDVDemux *dvdemux;
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gint i;
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dvdemux = GST_DVDEMUX (object);
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g_object_unref (dvdemux->adapter);
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/* clean up temp audio buffers */
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for (i = 0; i < 4; i++) {
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g_free (dvdemux->audio_buffers[i]);
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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/* reset to default values before starting streaming */
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static void
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gst_dvdemux_reset (GstDVDemux * dvdemux)
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{
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dvdemux->frame_offset = 0;
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dvdemux->audio_offset = 0;
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dvdemux->video_offset = 0;
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g_atomic_int_set (&dvdemux->found_header, 0);
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dvdemux->frame_len = -1;
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dvdemux->need_segment = FALSE;
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dvdemux->new_media = FALSE;
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dvdemux->framerate_numerator = 0;
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dvdemux->framerate_denominator = 0;
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dvdemux->height = 0;
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dvdemux->frequency = 0;
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dvdemux->channels = 0;
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dvdemux->wide = FALSE;
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gst_segment_init (&dvdemux->byte_segment, GST_FORMAT_BYTES);
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gst_segment_init (&dvdemux->time_segment, GST_FORMAT_TIME);
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dvdemux->have_group_id = FALSE;
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dvdemux->group_id = G_MAXUINT;
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}
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static gboolean
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have_group_id (GstDVDemux * demux)
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{
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GstEvent *event;
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event = gst_pad_get_sticky_event (demux->sinkpad, GST_EVENT_STREAM_START, 0);
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if (event) {
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if (gst_event_parse_group_id (event, &demux->group_id))
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demux->have_group_id = TRUE;
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else
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demux->have_group_id = FALSE;
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gst_event_unref (event);
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} else if (!demux->have_group_id) {
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demux->have_group_id = TRUE;
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demux->group_id = gst_util_group_id_next ();
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}
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return demux->have_group_id;
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}
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static GstPad *
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gst_dvdemux_add_pad (GstDVDemux * dvdemux, GstStaticPadTemplate * template,
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GstCaps * caps)
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{
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gboolean no_more_pads;
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GstPad *pad;
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GstEvent *event;
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gchar *stream_id;
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gchar rec_datetime[40];
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GstDateTime *rec_dt;
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pad = gst_pad_new_from_static_template (template, template->name_template);
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gst_pad_set_query_function (pad, GST_DEBUG_FUNCPTR (gst_dvdemux_src_query));
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gst_pad_set_event_function (pad,
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GST_DEBUG_FUNCPTR (gst_dvdemux_handle_src_event));
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gst_pad_use_fixed_caps (pad);
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gst_pad_set_active (pad, TRUE);
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stream_id =
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gst_pad_create_stream_id (pad,
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GST_ELEMENT_CAST (dvdemux),
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template == &video_src_temp ? "video" : "audio");
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event = gst_event_new_stream_start (stream_id);
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if (have_group_id (dvdemux))
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gst_event_set_group_id (event, dvdemux->group_id);
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gst_pad_push_event (pad, event);
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g_free (stream_id);
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gst_pad_set_caps (pad, caps);
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gst_pad_push_event (pad, gst_event_new_segment (&dvdemux->time_segment));
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gst_element_add_pad (GST_ELEMENT (dvdemux), pad);
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no_more_pads =
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(dvdemux->videosrcpad != NULL && template == &audio_src_temp) ||
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(dvdemux->audiosrcpad != NULL && template == &video_src_temp);
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if (no_more_pads)
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gst_element_no_more_pads (GST_ELEMENT (dvdemux));
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if (no_more_pads) {
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GstTagList *tags;
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tags = gst_tag_list_new (GST_TAG_CONTAINER_FORMAT, "DV", NULL);
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gst_tag_list_set_scope (tags, GST_TAG_SCOPE_GLOBAL);
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if (dv_get_recording_datetime (dvdemux->decoder, rec_datetime)) {
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rec_dt = gst_date_time_new_from_iso8601_string (rec_datetime);
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if (rec_dt) {
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gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE_TIME,
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rec_dt, NULL);
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gst_date_time_unref (rec_dt);
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}
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}
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if (dvdemux->videosrcpad)
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gst_pad_push_event (dvdemux->videosrcpad,
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gst_event_new_tag (gst_tag_list_ref (tags)));
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if (dvdemux->audiosrcpad)
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gst_pad_push_event (dvdemux->audiosrcpad,
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gst_event_new_tag (gst_tag_list_ref (tags)));
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gst_tag_list_unref (tags);
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}
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return pad;
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}
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static void
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gst_dvdemux_remove_pads (GstDVDemux * dvdemux)
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{
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if (dvdemux->videosrcpad) {
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gst_element_remove_pad (GST_ELEMENT (dvdemux), dvdemux->videosrcpad);
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dvdemux->videosrcpad = NULL;
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}
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if (dvdemux->audiosrcpad) {
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gst_element_remove_pad (GST_ELEMENT (dvdemux), dvdemux->audiosrcpad);
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dvdemux->audiosrcpad = NULL;
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}
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}
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static gboolean
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gst_dvdemux_src_convert (GstDVDemux * dvdemux, GstPad * pad,
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GstFormat src_format, gint64 src_value, GstFormat dest_format,
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gint64 * dest_value)
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{
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gboolean res = TRUE;
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if (dest_format == src_format || src_value == -1) {
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*dest_value = src_value;
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goto done;
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}
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if (dvdemux->frame_len <= 0)
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goto error;
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if (dvdemux->decoder == NULL)
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goto error;
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GST_INFO_OBJECT (pad,
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"src_value:%" G_GINT64_FORMAT ", src_format:%d, dest_format:%d",
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src_value, src_format, dest_format);
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switch (src_format) {
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case GST_FORMAT_BYTES:
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switch (dest_format) {
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case GST_FORMAT_DEFAULT:
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if (pad == dvdemux->videosrcpad)
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*dest_value = src_value / dvdemux->frame_len;
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else if (pad == dvdemux->audiosrcpad)
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*dest_value = src_value / (2 * dvdemux->channels);
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break;
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case GST_FORMAT_TIME:
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if (pad == dvdemux->videosrcpad)
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*dest_value = gst_util_uint64_scale (src_value,
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GST_SECOND * dvdemux->framerate_denominator,
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dvdemux->frame_len * dvdemux->framerate_numerator);
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else if (pad == dvdemux->audiosrcpad)
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*dest_value = gst_util_uint64_scale_int (src_value, GST_SECOND,
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2 * dvdemux->frequency * dvdemux->channels);
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break;
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default:
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res = FALSE;
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}
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break;
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case GST_FORMAT_TIME:
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switch (dest_format) {
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case GST_FORMAT_BYTES:
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if (pad == dvdemux->videosrcpad)
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*dest_value = gst_util_uint64_scale (src_value,
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dvdemux->frame_len * dvdemux->framerate_numerator,
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dvdemux->framerate_denominator * GST_SECOND);
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else if (pad == dvdemux->audiosrcpad)
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*dest_value = gst_util_uint64_scale_int (src_value,
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2 * dvdemux->frequency * dvdemux->channels, GST_SECOND);
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break;
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case GST_FORMAT_DEFAULT:
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if (pad == dvdemux->videosrcpad) {
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if (src_value)
|
|
*dest_value = gst_util_uint64_scale (src_value,
|
|
dvdemux->framerate_numerator,
|
|
dvdemux->framerate_denominator * GST_SECOND);
|
|
else
|
|
*dest_value = 0;
|
|
} else if (pad == dvdemux->audiosrcpad) {
|
|
*dest_value = gst_util_uint64_scale (src_value,
|
|
dvdemux->frequency, GST_SECOND);
|
|
}
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
}
|
|
break;
|
|
case GST_FORMAT_DEFAULT:
|
|
switch (dest_format) {
|
|
case GST_FORMAT_TIME:
|
|
if (pad == dvdemux->videosrcpad) {
|
|
*dest_value = gst_util_uint64_scale (src_value,
|
|
GST_SECOND * dvdemux->framerate_denominator,
|
|
dvdemux->framerate_numerator);
|
|
} else if (pad == dvdemux->audiosrcpad) {
|
|
if (src_value)
|
|
*dest_value = gst_util_uint64_scale (src_value,
|
|
GST_SECOND, dvdemux->frequency);
|
|
else
|
|
*dest_value = 0;
|
|
}
|
|
break;
|
|
case GST_FORMAT_BYTES:
|
|
if (pad == dvdemux->videosrcpad) {
|
|
*dest_value = src_value * dvdemux->frame_len;
|
|
} else if (pad == dvdemux->audiosrcpad) {
|
|
*dest_value = src_value * 2 * dvdemux->channels;
|
|
}
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
}
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
}
|
|
|
|
done:
|
|
GST_INFO_OBJECT (pad,
|
|
"Result : dest_format:%d, dest_value:%" G_GINT64_FORMAT ", res:%d",
|
|
dest_format, *dest_value, res);
|
|
return res;
|
|
|
|
/* ERRORS */
|
|
error:
|
|
{
|
|
GST_INFO ("source conversion failed");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_dvdemux_sink_convert (GstDVDemux * dvdemux, GstFormat src_format,
|
|
gint64 src_value, GstFormat dest_format, gint64 * dest_value)
|
|
{
|
|
gboolean res = TRUE;
|
|
|
|
GST_DEBUG_OBJECT (dvdemux, "%d -> %d", src_format, dest_format);
|
|
GST_INFO_OBJECT (dvdemux,
|
|
"src_value:%" G_GINT64_FORMAT ", src_format:%d, dest_format:%d",
|
|
src_value, src_format, dest_format);
|
|
|
|
if (dest_format == src_format || src_value == -1) {
|
|
*dest_value = src_value;
|
|
goto done;
|
|
}
|
|
|
|
if (dvdemux->frame_len <= 0)
|
|
goto error;
|
|
|
|
switch (src_format) {
|
|
case GST_FORMAT_BYTES:
|
|
switch (dest_format) {
|
|
case GST_FORMAT_TIME:
|
|
{
|
|
guint64 frame;
|
|
|
|
/* get frame number, rounds down so don't combine this
|
|
* line and the next line. */
|
|
frame = src_value / dvdemux->frame_len;
|
|
|
|
*dest_value = gst_util_uint64_scale (frame,
|
|
GST_SECOND * dvdemux->framerate_denominator,
|
|
dvdemux->framerate_numerator);
|
|
break;
|
|
}
|
|
default:
|
|
res = FALSE;
|
|
}
|
|
break;
|
|
case GST_FORMAT_TIME:
|
|
switch (dest_format) {
|
|
case GST_FORMAT_BYTES:
|
|
{
|
|
guint64 frame;
|
|
|
|
/* calculate the frame */
|
|
frame =
|
|
gst_util_uint64_scale (src_value, dvdemux->framerate_numerator,
|
|
dvdemux->framerate_denominator * GST_SECOND);
|
|
|
|
/* calculate the offset from the rounded frame */
|
|
*dest_value = frame * dvdemux->frame_len;
|
|
break;
|
|
}
|
|
default:
|
|
res = FALSE;
|
|
}
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
}
|
|
GST_INFO_OBJECT (dvdemux,
|
|
"Result : dest_format:%d, dest_value:%" G_GINT64_FORMAT ", res:%d",
|
|
dest_format, *dest_value, res);
|
|
|
|
done:
|
|
return res;
|
|
|
|
error:
|
|
{
|
|
GST_INFO_OBJECT (dvdemux, "sink conversion failed");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_dvdemux_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
gboolean res = TRUE;
|
|
GstDVDemux *dvdemux;
|
|
|
|
dvdemux = GST_DVDEMUX (parent);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_POSITION:
|
|
{
|
|
GstFormat format;
|
|
gint64 cur;
|
|
|
|
/* get target format */
|
|
gst_query_parse_position (query, &format, NULL);
|
|
|
|
/* bring the position to the requested format. */
|
|
if (!(res = gst_dvdemux_src_convert (dvdemux, pad,
|
|
GST_FORMAT_TIME, dvdemux->time_segment.position,
|
|
format, &cur)))
|
|
goto error;
|
|
gst_query_set_position (query, format, cur);
|
|
break;
|
|
}
|
|
case GST_QUERY_DURATION:
|
|
{
|
|
GstFormat format;
|
|
gint64 end;
|
|
GstQuery *pquery;
|
|
|
|
/* First ask the peer in the original format */
|
|
if (!gst_pad_peer_query (dvdemux->sinkpad, query)) {
|
|
/* get target format */
|
|
gst_query_parse_duration (query, &format, NULL);
|
|
|
|
/* Now ask the peer in BYTES format and try to convert */
|
|
pquery = gst_query_new_duration (GST_FORMAT_BYTES);
|
|
if (!gst_pad_peer_query (dvdemux->sinkpad, pquery)) {
|
|
gst_query_unref (pquery);
|
|
goto error;
|
|
}
|
|
|
|
/* get peer total length */
|
|
gst_query_parse_duration (pquery, NULL, &end);
|
|
gst_query_unref (pquery);
|
|
|
|
/* convert end to requested format */
|
|
if (end != -1) {
|
|
if (!(res = gst_dvdemux_sink_convert (dvdemux,
|
|
GST_FORMAT_BYTES, end, format, &end))) {
|
|
goto error;
|
|
}
|
|
gst_query_set_duration (query, format, end);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case GST_QUERY_CONVERT:
|
|
{
|
|
GstFormat src_fmt, dest_fmt;
|
|
gint64 src_val, dest_val;
|
|
|
|
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
|
|
if (!(res =
|
|
gst_dvdemux_src_convert (dvdemux, pad, src_fmt, src_val,
|
|
dest_fmt, &dest_val)))
|
|
goto error;
|
|
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
|
|
break;
|
|
}
|
|
default:
|
|
res = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
|
|
/* ERRORS */
|
|
error:
|
|
{
|
|
GST_DEBUG ("error source query");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_dvdemux_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
gboolean res = TRUE;
|
|
GstDVDemux *dvdemux;
|
|
|
|
dvdemux = GST_DVDEMUX (parent);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_CONVERT:
|
|
{
|
|
GstFormat src_fmt, dest_fmt;
|
|
gint64 src_val, dest_val;
|
|
|
|
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
|
|
if (!(res =
|
|
gst_dvdemux_sink_convert (dvdemux, src_fmt, src_val, dest_fmt,
|
|
&dest_val)))
|
|
goto error;
|
|
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
|
|
break;
|
|
}
|
|
default:
|
|
res = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
|
|
/* ERRORS */
|
|
error:
|
|
{
|
|
GST_DEBUG ("error handling sink query");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* takes ownership of the event */
|
|
static gboolean
|
|
gst_dvdemux_push_event (GstDVDemux * dvdemux, GstEvent * event)
|
|
{
|
|
gboolean res = FALSE;
|
|
|
|
if (dvdemux->videosrcpad) {
|
|
gst_event_ref (event);
|
|
res |= gst_pad_push_event (dvdemux->videosrcpad, event);
|
|
}
|
|
|
|
if (dvdemux->audiosrcpad)
|
|
res |= gst_pad_push_event (dvdemux->audiosrcpad, event);
|
|
else {
|
|
gst_event_unref (event);
|
|
res = TRUE;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_dvdemux_handle_sink_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
GstDVDemux *dvdemux = GST_DVDEMUX (parent);
|
|
gboolean res = TRUE;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_FLUSH_START:
|
|
/* we are not blocking on anything exect the push() calls
|
|
* to the peer which will be unblocked by forwarding the
|
|
* event.*/
|
|
res = gst_dvdemux_push_event (dvdemux, event);
|
|
break;
|
|
case GST_EVENT_FLUSH_STOP:
|
|
gst_adapter_clear (dvdemux->adapter);
|
|
GST_DEBUG ("cleared adapter");
|
|
gst_segment_init (&dvdemux->byte_segment, GST_FORMAT_BYTES);
|
|
gst_segment_init (&dvdemux->time_segment, GST_FORMAT_TIME);
|
|
res = gst_dvdemux_push_event (dvdemux, event);
|
|
break;
|
|
case GST_EVENT_SEGMENT:
|
|
{
|
|
const GstSegment *segment;
|
|
|
|
gst_event_parse_segment (event, &segment);
|
|
switch (segment->format) {
|
|
case GST_FORMAT_BYTES:
|
|
gst_segment_copy_into (segment, &dvdemux->byte_segment);
|
|
dvdemux->need_segment = TRUE;
|
|
gst_event_unref (event);
|
|
break;
|
|
case GST_FORMAT_TIME:
|
|
gst_segment_copy_into (segment, &dvdemux->time_segment);
|
|
|
|
/* and we can just forward this time event */
|
|
res = gst_dvdemux_push_event (dvdemux, event);
|
|
break;
|
|
default:
|
|
gst_event_unref (event);
|
|
/* cannot accept this format */
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case GST_EVENT_EOS:
|
|
/* flush any pending data, should be nothing left. */
|
|
gst_dvdemux_flush (dvdemux);
|
|
/* forward event */
|
|
res = gst_dvdemux_push_event (dvdemux, event);
|
|
/* and clear the adapter */
|
|
gst_adapter_clear (dvdemux->adapter);
|
|
break;
|
|
case GST_EVENT_CAPS:
|
|
gst_event_unref (event);
|
|
break;
|
|
default:
|
|
res = gst_dvdemux_push_event (dvdemux, event);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/* convert a pair of values on the given srcpad */
|
|
static gboolean
|
|
gst_dvdemux_convert_src_pair (GstDVDemux * dvdemux, GstPad * pad,
|
|
GstFormat src_format, gint64 src_start, gint64 src_stop,
|
|
GstFormat dst_format, gint64 * dst_start, gint64 * dst_stop)
|
|
{
|
|
gboolean res;
|
|
|
|
GST_INFO ("starting conversion of start");
|
|
/* bring the format to time on srcpad. */
|
|
if (!(res = gst_dvdemux_src_convert (dvdemux, pad,
|
|
src_format, src_start, dst_format, dst_start))) {
|
|
goto done;
|
|
}
|
|
GST_INFO ("Finished conversion of start: %" G_GINT64_FORMAT, *dst_start);
|
|
|
|
GST_INFO ("starting conversion of stop");
|
|
/* bring the format to time on srcpad. */
|
|
if (!(res = gst_dvdemux_src_convert (dvdemux, pad,
|
|
src_format, src_stop, dst_format, dst_stop))) {
|
|
/* could not convert seek format to time offset */
|
|
goto done;
|
|
}
|
|
GST_INFO ("Finished conversion of stop: %" G_GINT64_FORMAT, *dst_stop);
|
|
done:
|
|
return res;
|
|
}
|
|
|
|
/* convert a pair of values on the sinkpad */
|
|
static gboolean
|
|
gst_dvdemux_convert_sink_pair (GstDVDemux * dvdemux,
|
|
GstFormat src_format, gint64 src_start, gint64 src_stop,
|
|
GstFormat dst_format, gint64 * dst_start, gint64 * dst_stop)
|
|
{
|
|
gboolean res;
|
|
|
|
GST_INFO ("starting conversion of start");
|
|
/* bring the format to time on srcpad. */
|
|
if (!(res = gst_dvdemux_sink_convert (dvdemux,
|
|
src_format, src_start, dst_format, dst_start))) {
|
|
goto done;
|
|
}
|
|
GST_INFO ("Finished conversion of start: %" G_GINT64_FORMAT, *dst_start);
|
|
|
|
GST_INFO ("starting conversion of stop");
|
|
/* bring the format to time on srcpad. */
|
|
if (!(res = gst_dvdemux_sink_convert (dvdemux,
|
|
src_format, src_stop, dst_format, dst_stop))) {
|
|
/* could not convert seek format to time offset */
|
|
goto done;
|
|
}
|
|
GST_INFO ("Finished conversion of stop: %" G_GINT64_FORMAT, *dst_stop);
|
|
done:
|
|
return res;
|
|
}
|
|
|
|
/* convert a pair of values on the srcpad to a pair of
|
|
* values on the sinkpad
|
|
*/
|
|
static gboolean
|
|
gst_dvdemux_convert_src_to_sink (GstDVDemux * dvdemux, GstPad * pad,
|
|
GstFormat src_format, gint64 src_start, gint64 src_stop,
|
|
GstFormat dst_format, gint64 * dst_start, gint64 * dst_stop)
|
|
{
|
|
GstFormat conv;
|
|
gboolean res;
|
|
|
|
conv = GST_FORMAT_TIME;
|
|
/* convert to TIME intermediate format */
|
|
if (!(res = gst_dvdemux_convert_src_pair (dvdemux, pad,
|
|
src_format, src_start, src_stop, conv, dst_start, dst_stop))) {
|
|
/* could not convert format to time offset */
|
|
goto done;
|
|
}
|
|
/* convert to dst format on sinkpad */
|
|
if (!(res = gst_dvdemux_convert_sink_pair (dvdemux,
|
|
conv, *dst_start, *dst_stop, dst_format, dst_start, dst_stop))) {
|
|
/* could not convert format to time offset */
|
|
goto done;
|
|
}
|
|
done:
|
|
return res;
|
|
}
|
|
|
|
#if 0
|
|
static gboolean
|
|
gst_dvdemux_convert_segment (GstDVDemux * dvdemux, GstSegment * src,
|
|
GstSegment * dest)
|
|
{
|
|
dest->rate = src->rate;
|
|
dest->abs_rate = src->abs_rate;
|
|
dest->flags = src->flags;
|
|
|
|
return TRUE;
|
|
}
|
|
#endif
|
|
|
|
/* handle seek in push base mode.
|
|
*
|
|
* Convert the time seek to a bytes seek and send it
|
|
* upstream
|
|
* Does not take ownership of the event.
|
|
*/
|
|
static gboolean
|
|
gst_dvdemux_handle_push_seek (GstDVDemux * dvdemux, GstPad * pad,
|
|
GstEvent * event)
|
|
{
|
|
gboolean res = FALSE;
|
|
gdouble rate;
|
|
GstSeekFlags flags;
|
|
GstFormat format;
|
|
GstSeekType cur_type, stop_type;
|
|
gint64 cur, stop;
|
|
gint64 start_position, end_position;
|
|
GstEvent *newevent;
|
|
|
|
gst_event_parse_seek (event, &rate, &format, &flags,
|
|
&cur_type, &cur, &stop_type, &stop);
|
|
|
|
/* First try if upstream can handle time based seeks */
|
|
if (format == GST_FORMAT_TIME)
|
|
res = gst_pad_push_event (dvdemux->sinkpad, gst_event_ref (event));
|
|
|
|
if (!res) {
|
|
/* we convert the start/stop on the srcpad to the byte format
|
|
* on the sinkpad and forward the event */
|
|
res = gst_dvdemux_convert_src_to_sink (dvdemux, pad,
|
|
format, cur, stop, GST_FORMAT_BYTES, &start_position, &end_position);
|
|
if (!res)
|
|
goto done;
|
|
|
|
/* now this is the updated seek event on bytes */
|
|
newevent = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags,
|
|
cur_type, start_position, stop_type, end_position);
|
|
|
|
res = gst_pad_push_event (dvdemux->sinkpad, newevent);
|
|
}
|
|
done:
|
|
return res;
|
|
}
|
|
|
|
/* position ourselves to the configured segment, used in pull mode.
|
|
* The input segment is in TIME format. We convert the time values
|
|
* to bytes values into our byte_segment which we use to pull data from
|
|
* the sinkpad peer.
|
|
*/
|
|
static gboolean
|
|
gst_dvdemux_do_seek (GstDVDemux * demux, GstSegment * segment)
|
|
{
|
|
gboolean res;
|
|
GstFormat format;
|
|
|
|
/* position to value configured is last_stop, this will round down
|
|
* to the byte position where the frame containing the given
|
|
* timestamp can be found. */
|
|
format = GST_FORMAT_BYTES;
|
|
res = gst_dvdemux_sink_convert (demux,
|
|
segment->format, segment->position,
|
|
format, (gint64 *) & demux->byte_segment.position);
|
|
if (!res)
|
|
goto done;
|
|
|
|
/* update byte segment start */
|
|
gst_dvdemux_sink_convert (demux,
|
|
segment->format, segment->start, format,
|
|
(gint64 *) & demux->byte_segment.start);
|
|
|
|
/* update byte segment stop */
|
|
gst_dvdemux_sink_convert (demux,
|
|
segment->format, segment->stop, format,
|
|
(gint64 *) & demux->byte_segment.stop);
|
|
|
|
/* update byte segment time */
|
|
gst_dvdemux_sink_convert (demux,
|
|
segment->format, segment->time, format,
|
|
(gint64 *) & demux->byte_segment.time);
|
|
|
|
/* calculate current frame number */
|
|
format = GST_FORMAT_DEFAULT;
|
|
gst_dvdemux_src_convert (demux, demux->videosrcpad,
|
|
segment->format, segment->start, format, &demux->video_offset);
|
|
|
|
/* calculate current audio number */
|
|
format = GST_FORMAT_DEFAULT;
|
|
gst_dvdemux_src_convert (demux, demux->audiosrcpad,
|
|
segment->format, segment->start, format, &demux->audio_offset);
|
|
|
|
/* every DV frame corresponts with one video frame */
|
|
demux->frame_offset = demux->video_offset;
|
|
|
|
done:
|
|
return res;
|
|
}
|
|
|
|
/* handle seek in pull base mode.
|
|
*
|
|
* Does not take ownership of the event.
|
|
*/
|
|
static gboolean
|
|
gst_dvdemux_handle_pull_seek (GstDVDemux * demux, GstPad * pad,
|
|
GstEvent * event)
|
|
{
|
|
gboolean res;
|
|
gdouble rate;
|
|
GstFormat format;
|
|
GstSeekFlags flags;
|
|
GstSeekType cur_type, stop_type;
|
|
gint64 cur, stop;
|
|
gboolean flush;
|
|
gboolean update;
|
|
GstSegment seeksegment;
|
|
|
|
GST_DEBUG_OBJECT (demux, "doing seek");
|
|
|
|
/* first bring the event format to TIME, our native format
|
|
* to perform the seek on */
|
|
if (event) {
|
|
GstFormat conv;
|
|
|
|
gst_event_parse_seek (event, &rate, &format, &flags,
|
|
&cur_type, &cur, &stop_type, &stop);
|
|
|
|
/* can't seek backwards yet */
|
|
if (rate <= 0.0)
|
|
goto wrong_rate;
|
|
|
|
/* convert input format to TIME */
|
|
conv = GST_FORMAT_TIME;
|
|
if (!(gst_dvdemux_convert_src_pair (demux, pad,
|
|
format, cur, stop, conv, &cur, &stop)))
|
|
goto no_format;
|
|
|
|
format = GST_FORMAT_TIME;
|
|
} else {
|
|
flags = 0;
|
|
}
|
|
|
|
flush = flags & GST_SEEK_FLAG_FLUSH;
|
|
|
|
/* send flush start */
|
|
if (flush)
|
|
gst_dvdemux_push_event (demux, gst_event_new_flush_start ());
|
|
else
|
|
gst_pad_pause_task (demux->sinkpad);
|
|
|
|
/* grab streaming lock, this should eventually be possible, either
|
|
* because the task is paused or our streaming thread stopped
|
|
* because our peer is flushing. */
|
|
GST_PAD_STREAM_LOCK (demux->sinkpad);
|
|
|
|
/* make copy into temp structure, we can only update the main one
|
|
* when the subclass actually could to the seek. */
|
|
memcpy (&seeksegment, &demux->time_segment, sizeof (GstSegment));
|
|
|
|
/* now configure the seek segment */
|
|
if (event) {
|
|
gst_segment_do_seek (&seeksegment, rate, format, flags,
|
|
cur_type, cur, stop_type, stop, &update);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux, "segment configured from %" G_GINT64_FORMAT
|
|
" to %" G_GINT64_FORMAT ", position %" G_GINT64_FORMAT,
|
|
seeksegment.start, seeksegment.stop, seeksegment.position);
|
|
|
|
/* do the seek, segment.position contains new position. */
|
|
res = gst_dvdemux_do_seek (demux, &seeksegment);
|
|
|
|
/* and prepare to continue streaming */
|
|
if (flush) {
|
|
/* send flush stop, peer will accept data and events again. We
|
|
* are not yet providing data as we still have the STREAM_LOCK. */
|
|
gst_dvdemux_push_event (demux, gst_event_new_flush_stop (TRUE));
|
|
}
|
|
|
|
/* if successfull seek, we update our real segment and push
|
|
* out the new segment. */
|
|
if (res) {
|
|
memcpy (&demux->time_segment, &seeksegment, sizeof (GstSegment));
|
|
|
|
if (demux->time_segment.flags & GST_SEEK_FLAG_SEGMENT) {
|
|
gst_element_post_message (GST_ELEMENT_CAST (demux),
|
|
gst_message_new_segment_start (GST_OBJECT_CAST (demux),
|
|
demux->time_segment.format, demux->time_segment.position));
|
|
}
|
|
if ((stop = demux->time_segment.stop) == -1)
|
|
stop = demux->time_segment.duration;
|
|
|
|
GST_INFO_OBJECT (demux,
|
|
"Saving newsegment event to be sent in streaming thread");
|
|
|
|
if (demux->pending_segment)
|
|
gst_event_unref (demux->pending_segment);
|
|
|
|
demux->pending_segment = gst_event_new_segment (&demux->time_segment);
|
|
|
|
demux->need_segment = FALSE;
|
|
}
|
|
|
|
/* and restart the task in case it got paused explicitely or by
|
|
* the FLUSH_START event we pushed out. */
|
|
gst_pad_start_task (demux->sinkpad, (GstTaskFunction) gst_dvdemux_loop,
|
|
demux->sinkpad, NULL);
|
|
|
|
/* and release the lock again so we can continue streaming */
|
|
GST_PAD_STREAM_UNLOCK (demux->sinkpad);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
wrong_rate:
|
|
{
|
|
GST_DEBUG_OBJECT (demux, "negative playback rate %lf not supported.", rate);
|
|
return FALSE;
|
|
}
|
|
no_format:
|
|
{
|
|
GST_DEBUG_OBJECT (demux, "cannot convert to TIME format, seek aborted.");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_dvdemux_send_event (GstElement * element, GstEvent * event)
|
|
{
|
|
GstDVDemux *dvdemux = GST_DVDEMUX (element);
|
|
gboolean res = FALSE;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SEEK:
|
|
{
|
|
/* checking header and configuring the seek must be atomic */
|
|
GST_OBJECT_LOCK (dvdemux);
|
|
if (g_atomic_int_get (&dvdemux->found_header) == 0) {
|
|
GstEvent **event_p;
|
|
|
|
event_p = &dvdemux->seek_event;
|
|
|
|
/* We don't have pads yet. Keep the event. */
|
|
GST_INFO_OBJECT (dvdemux, "Keeping the seek event for later");
|
|
|
|
gst_event_replace (event_p, event);
|
|
GST_OBJECT_UNLOCK (dvdemux);
|
|
|
|
res = TRUE;
|
|
} else {
|
|
GST_OBJECT_UNLOCK (dvdemux);
|
|
|
|
if (dvdemux->seek_handler) {
|
|
res = dvdemux->seek_handler (dvdemux, dvdemux->videosrcpad, event);
|
|
gst_event_unref (event);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
res = GST_ELEMENT_CLASS (parent_class)->send_event (element, event);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/* handle an event on the source pad, it's most likely a seek */
|
|
static gboolean
|
|
gst_dvdemux_handle_src_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
gboolean res = TRUE;
|
|
GstDVDemux *dvdemux;
|
|
|
|
dvdemux = GST_DVDEMUX (parent);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SEEK:
|
|
/* seek handler is installed based on scheduling mode */
|
|
if (dvdemux->seek_handler)
|
|
res = dvdemux->seek_handler (dvdemux, pad, event);
|
|
else
|
|
res = FALSE;
|
|
break;
|
|
case GST_EVENT_QOS:
|
|
/* we can't really (yet) do QoS */
|
|
res = FALSE;
|
|
break;
|
|
case GST_EVENT_NAVIGATION:
|
|
case GST_EVENT_CAPS:
|
|
/* no navigation or caps either... */
|
|
res = FALSE;
|
|
break;
|
|
default:
|
|
res = gst_pad_push_event (dvdemux->sinkpad, event);
|
|
event = NULL;
|
|
break;
|
|
}
|
|
if (event)
|
|
gst_event_unref (event);
|
|
|
|
return res;
|
|
}
|
|
|
|
/* does not take ownership of buffer */
|
|
static GstFlowReturn
|
|
gst_dvdemux_demux_audio (GstDVDemux * dvdemux, GstBuffer * buffer,
|
|
guint64 duration)
|
|
{
|
|
gint num_samples;
|
|
GstFlowReturn ret;
|
|
GstMapInfo map;
|
|
|
|
gst_buffer_map (buffer, &map, GST_MAP_READ);
|
|
dv_decode_full_audio (dvdemux->decoder, map.data, dvdemux->audio_buffers);
|
|
gst_buffer_unmap (buffer, &map);
|
|
|
|
if (G_LIKELY ((num_samples = dv_get_num_samples (dvdemux->decoder)) > 0)) {
|
|
gint16 *a_ptr;
|
|
gint i, j;
|
|
GstBuffer *outbuf;
|
|
gint frequency, channels;
|
|
|
|
/* get initial format or check if format changed */
|
|
frequency = dv_get_frequency (dvdemux->decoder);
|
|
channels = dv_get_num_channels (dvdemux->decoder);
|
|
|
|
if (G_UNLIKELY ((dvdemux->audiosrcpad == NULL)
|
|
|| (frequency != dvdemux->frequency)
|
|
|| (channels != dvdemux->channels))) {
|
|
GstCaps *caps;
|
|
GstAudioInfo info;
|
|
|
|
dvdemux->frequency = frequency;
|
|
dvdemux->channels = channels;
|
|
|
|
gst_audio_info_init (&info);
|
|
gst_audio_info_set_format (&info, GST_AUDIO_FORMAT_S16LE,
|
|
frequency, channels, NULL);
|
|
caps = gst_audio_info_to_caps (&info);
|
|
if (G_UNLIKELY (dvdemux->audiosrcpad == NULL)) {
|
|
dvdemux->audiosrcpad =
|
|
gst_dvdemux_add_pad (dvdemux, &audio_src_temp, caps);
|
|
} else {
|
|
gst_pad_set_caps (dvdemux->audiosrcpad, caps);
|
|
}
|
|
gst_caps_unref (caps);
|
|
}
|
|
|
|
outbuf = gst_buffer_new_and_alloc (num_samples *
|
|
sizeof (gint16) * dvdemux->channels);
|
|
|
|
gst_buffer_map (outbuf, &map, GST_MAP_WRITE);
|
|
a_ptr = (gint16 *) map.data;
|
|
|
|
for (i = 0; i < num_samples; i++) {
|
|
for (j = 0; j < dvdemux->channels; j++) {
|
|
*(a_ptr++) = dvdemux->audio_buffers[j][i];
|
|
}
|
|
}
|
|
gst_buffer_unmap (outbuf, &map);
|
|
|
|
GST_DEBUG ("pushing audio %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (dvdemux->time_segment.position));
|
|
|
|
GST_BUFFER_TIMESTAMP (outbuf) = dvdemux->time_segment.position;
|
|
GST_BUFFER_DURATION (outbuf) = duration;
|
|
GST_BUFFER_OFFSET (outbuf) = dvdemux->audio_offset;
|
|
dvdemux->audio_offset += num_samples;
|
|
GST_BUFFER_OFFSET_END (outbuf) = dvdemux->audio_offset;
|
|
|
|
if (dvdemux->new_media)
|
|
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
|
|
|
|
ret = gst_pad_push (dvdemux->audiosrcpad, outbuf);
|
|
} else {
|
|
/* no samples */
|
|
ret = GST_FLOW_OK;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* takes ownership of buffer */
|
|
static GstFlowReturn
|
|
gst_dvdemux_demux_video (GstDVDemux * dvdemux, GstBuffer * buffer,
|
|
guint64 duration)
|
|
{
|
|
GstBuffer *outbuf;
|
|
gint height;
|
|
gboolean wide;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
/* get params */
|
|
/* framerate is already up-to-date */
|
|
height = dvdemux->decoder->height;
|
|
wide = dv_format_wide (dvdemux->decoder);
|
|
|
|
/* see if anything changed */
|
|
if (G_UNLIKELY ((dvdemux->videosrcpad == NULL) || (dvdemux->height != height)
|
|
|| dvdemux->wide != wide)) {
|
|
gint par_x, par_y;
|
|
GstCaps *caps;
|
|
|
|
dvdemux->height = height;
|
|
dvdemux->wide = wide;
|
|
|
|
if (dvdemux->decoder->system == e_dv_system_625_50) {
|
|
if (wide) {
|
|
par_x = PAL_WIDE_PAR_X;
|
|
par_y = PAL_WIDE_PAR_Y;
|
|
} else {
|
|
par_x = PAL_NORMAL_PAR_X;
|
|
par_y = PAL_NORMAL_PAR_Y;
|
|
}
|
|
} else {
|
|
if (wide) {
|
|
par_x = NTSC_WIDE_PAR_X;
|
|
par_y = NTSC_WIDE_PAR_Y;
|
|
} else {
|
|
par_x = NTSC_NORMAL_PAR_X;
|
|
par_y = NTSC_NORMAL_PAR_Y;
|
|
}
|
|
}
|
|
|
|
caps = gst_caps_new_simple ("video/x-dv",
|
|
"systemstream", G_TYPE_BOOLEAN, FALSE,
|
|
"width", G_TYPE_INT, 720,
|
|
"height", G_TYPE_INT, height,
|
|
"framerate", GST_TYPE_FRACTION, dvdemux->framerate_numerator,
|
|
dvdemux->framerate_denominator,
|
|
"pixel-aspect-ratio", GST_TYPE_FRACTION, par_x, par_y, NULL);
|
|
|
|
if (G_UNLIKELY (dvdemux->videosrcpad == NULL)) {
|
|
dvdemux->videosrcpad =
|
|
gst_dvdemux_add_pad (dvdemux, &video_src_temp, caps);
|
|
} else {
|
|
gst_pad_set_caps (dvdemux->videosrcpad, caps);
|
|
}
|
|
gst_caps_unref (caps);
|
|
}
|
|
|
|
/* takes ownership of buffer here, we just need to modify
|
|
* the metadata. */
|
|
outbuf = gst_buffer_make_writable (buffer);
|
|
|
|
GST_BUFFER_TIMESTAMP (outbuf) = dvdemux->time_segment.position;
|
|
GST_BUFFER_OFFSET (outbuf) = dvdemux->video_offset;
|
|
GST_BUFFER_OFFSET_END (outbuf) = dvdemux->video_offset + 1;
|
|
GST_BUFFER_DURATION (outbuf) = duration;
|
|
|
|
if (dvdemux->new_media)
|
|
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
|
|
|
|
GST_DEBUG ("pushing video %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (dvdemux->time_segment.position));
|
|
|
|
ret = gst_pad_push (dvdemux->videosrcpad, outbuf);
|
|
|
|
dvdemux->video_offset++;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
get_ssyb_offset (int dif, int ssyb)
|
|
{
|
|
int offset;
|
|
|
|
offset = dif * 12000; /* to dif */
|
|
offset += 80 * (1 + (ssyb / 6)); /* to subcode pack */
|
|
offset += 3; /* past header */
|
|
offset += 8 * (ssyb % 6); /* to ssyb */
|
|
|
|
return offset;
|
|
}
|
|
|
|
static gboolean
|
|
gst_dvdemux_get_timecode (GstDVDemux * dvdemux, GstBuffer * buffer,
|
|
GstSMPTETimeCode * timecode)
|
|
{
|
|
guint8 *data;
|
|
GstMapInfo map;
|
|
int offset;
|
|
int dif;
|
|
int n_difs = dvdemux->decoder->num_dif_seqs;
|
|
|
|
gst_buffer_map (buffer, &map, GST_MAP_READ);
|
|
data = map.data;
|
|
for (dif = 0; dif < n_difs; dif++) {
|
|
offset = get_ssyb_offset (dif, 3);
|
|
if (data[offset + 3] == 0x13) {
|
|
timecode->frames = ((data[offset + 4] >> 4) & 0x3) * 10 +
|
|
(data[offset + 4] & 0xf);
|
|
timecode->seconds = ((data[offset + 5] >> 4) & 0x3) * 10 +
|
|
(data[offset + 5] & 0xf);
|
|
timecode->minutes = ((data[offset + 6] >> 4) & 0x3) * 10 +
|
|
(data[offset + 6] & 0xf);
|
|
timecode->hours = ((data[offset + 7] >> 4) & 0x3) * 10 +
|
|
(data[offset + 7] & 0xf);
|
|
GST_DEBUG ("got timecode %" GST_SMPTE_TIME_CODE_FORMAT,
|
|
GST_SMPTE_TIME_CODE_ARGS (timecode));
|
|
gst_buffer_unmap (buffer, &map);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
gst_buffer_unmap (buffer, &map);
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_dvdemux_is_new_media (GstDVDemux * dvdemux, GstBuffer * buffer)
|
|
{
|
|
guint8 *data;
|
|
GstMapInfo map;
|
|
int aaux_offset;
|
|
int dif;
|
|
int n_difs;
|
|
|
|
n_difs = dvdemux->decoder->num_dif_seqs;
|
|
|
|
gst_buffer_map (buffer, &map, GST_MAP_READ);
|
|
data = map.data;
|
|
for (dif = 0; dif < n_difs; dif++) {
|
|
if (dif & 1) {
|
|
aaux_offset = (dif * 12000) + (6 + 16 * 1) * 80 + 3;
|
|
} else {
|
|
aaux_offset = (dif * 12000) + (6 + 16 * 4) * 80 + 3;
|
|
}
|
|
if (data[aaux_offset + 0] == 0x51) {
|
|
if ((data[aaux_offset + 2] & 0x80) == 0) {
|
|
gst_buffer_unmap (buffer, &map);
|
|
return TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
gst_buffer_unmap (buffer, &map);
|
|
return FALSE;
|
|
}
|
|
|
|
/* takes ownership of buffer */
|
|
static GstFlowReturn
|
|
gst_dvdemux_demux_frame (GstDVDemux * dvdemux, GstBuffer * buffer)
|
|
{
|
|
GstClockTime next_ts;
|
|
GstFlowReturn aret, vret, ret;
|
|
GstMapInfo map;
|
|
guint64 duration;
|
|
GstSMPTETimeCode timecode;
|
|
int frame_number;
|
|
|
|
if (G_UNLIKELY (dvdemux->need_segment)) {
|
|
GstFormat format;
|
|
|
|
/* convert to time and store as start/end_timestamp */
|
|
format = GST_FORMAT_TIME;
|
|
if (!(gst_dvdemux_convert_sink_pair (dvdemux,
|
|
GST_FORMAT_BYTES, dvdemux->byte_segment.start,
|
|
dvdemux->byte_segment.stop, format,
|
|
(gint64 *) & dvdemux->time_segment.start,
|
|
(gint64 *) & dvdemux->time_segment.stop)))
|
|
goto segment_error;
|
|
|
|
dvdemux->time_segment.rate = dvdemux->byte_segment.rate;
|
|
dvdemux->time_segment.position = dvdemux->time_segment.start;
|
|
|
|
/* calculate current frame number */
|
|
format = GST_FORMAT_DEFAULT;
|
|
if (!(gst_dvdemux_src_convert (dvdemux, dvdemux->videosrcpad,
|
|
GST_FORMAT_TIME, dvdemux->time_segment.start,
|
|
format, &dvdemux->frame_offset)))
|
|
goto segment_error;
|
|
|
|
GST_DEBUG_OBJECT (dvdemux, "sending segment start: %" GST_TIME_FORMAT
|
|
", stop: %" GST_TIME_FORMAT ", time: %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (dvdemux->time_segment.start),
|
|
GST_TIME_ARGS (dvdemux->time_segment.stop),
|
|
GST_TIME_ARGS (dvdemux->time_segment.start));
|
|
|
|
gst_dvdemux_push_event (dvdemux,
|
|
gst_event_new_segment (&dvdemux->time_segment));
|
|
|
|
dvdemux->need_segment = FALSE;
|
|
}
|
|
|
|
gst_dvdemux_get_timecode (dvdemux, buffer, &timecode);
|
|
gst_smpte_time_code_get_frame_number (
|
|
(dvdemux->decoder->system == e_dv_system_625_50) ?
|
|
GST_SMPTE_TIME_CODE_SYSTEM_25 : GST_SMPTE_TIME_CODE_SYSTEM_30,
|
|
&frame_number, &timecode);
|
|
|
|
next_ts = gst_util_uint64_scale_int (
|
|
(dvdemux->frame_offset + 1) * GST_SECOND,
|
|
dvdemux->framerate_denominator, dvdemux->framerate_numerator);
|
|
duration = next_ts - dvdemux->time_segment.position;
|
|
|
|
gst_buffer_map (buffer, &map, GST_MAP_READ);
|
|
dv_parse_packs (dvdemux->decoder, map.data);
|
|
gst_buffer_unmap (buffer, &map);
|
|
dvdemux->new_media = FALSE;
|
|
if (gst_dvdemux_is_new_media (dvdemux, buffer) &&
|
|
dvdemux->frames_since_new_media > 2) {
|
|
dvdemux->new_media = TRUE;
|
|
dvdemux->frames_since_new_media = 0;
|
|
}
|
|
dvdemux->frames_since_new_media++;
|
|
|
|
/* does not take ownership of buffer */
|
|
aret = ret = gst_dvdemux_demux_audio (dvdemux, buffer, duration);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)) {
|
|
gst_buffer_unref (buffer);
|
|
goto done;
|
|
}
|
|
|
|
/* takes ownership of buffer */
|
|
vret = ret = gst_dvdemux_demux_video (dvdemux, buffer, duration);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED))
|
|
goto done;
|
|
|
|
/* if both are not linked, we stop */
|
|
if (G_UNLIKELY (aret == GST_FLOW_NOT_LINKED && vret == GST_FLOW_NOT_LINKED)) {
|
|
ret = GST_FLOW_NOT_LINKED;
|
|
goto done;
|
|
}
|
|
|
|
dvdemux->time_segment.position = next_ts;
|
|
dvdemux->frame_offset++;
|
|
|
|
/* check for the end of the segment */
|
|
if (dvdemux->time_segment.stop != -1 && next_ts > dvdemux->time_segment.stop)
|
|
ret = GST_FLOW_EOS;
|
|
else
|
|
ret = GST_FLOW_OK;
|
|
|
|
done:
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
segment_error:
|
|
{
|
|
GST_DEBUG ("error generating new_segment event");
|
|
gst_buffer_unref (buffer);
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
/* flush any remaining data in the adapter, used in chain based scheduling mode */
|
|
static GstFlowReturn
|
|
gst_dvdemux_flush (GstDVDemux * dvdemux)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
while (gst_adapter_available (dvdemux->adapter) >= dvdemux->frame_len) {
|
|
const guint8 *data;
|
|
gint length;
|
|
|
|
/* get the accumulated bytes */
|
|
data = gst_adapter_map (dvdemux->adapter, dvdemux->frame_len);
|
|
|
|
/* parse header to know the length and other params */
|
|
if (G_UNLIKELY (dv_parse_header (dvdemux->decoder, data) < 0)) {
|
|
gst_adapter_unmap (dvdemux->adapter);
|
|
goto parse_header_error;
|
|
}
|
|
gst_adapter_unmap (dvdemux->adapter);
|
|
|
|
/* after parsing the header we know the length of the data */
|
|
length = dvdemux->frame_len = dvdemux->decoder->frame_size;
|
|
if (dvdemux->decoder->system == e_dv_system_625_50) {
|
|
dvdemux->framerate_numerator = PAL_FRAMERATE_NUMERATOR;
|
|
dvdemux->framerate_denominator = PAL_FRAMERATE_DENOMINATOR;
|
|
} else {
|
|
dvdemux->framerate_numerator = NTSC_FRAMERATE_NUMERATOR;
|
|
dvdemux->framerate_denominator = NTSC_FRAMERATE_DENOMINATOR;
|
|
}
|
|
g_atomic_int_set (&dvdemux->found_header, 1);
|
|
|
|
/* let demux_video set the height, it needs to detect when things change so
|
|
* it can reset caps */
|
|
|
|
/* if we still have enough for a frame, start decoding */
|
|
if (G_LIKELY (gst_adapter_available (dvdemux->adapter) >= length)) {
|
|
GstBuffer *buffer;
|
|
|
|
buffer = gst_adapter_take_buffer (dvdemux->adapter, length);
|
|
|
|
/* and decode the buffer, takes ownership */
|
|
ret = gst_dvdemux_demux_frame (dvdemux, buffer);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
goto done;
|
|
}
|
|
}
|
|
done:
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
parse_header_error:
|
|
{
|
|
GST_ELEMENT_ERROR (dvdemux, STREAM, DECODE,
|
|
(NULL), ("Error parsing DV header"));
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
/* streaming operation:
|
|
*
|
|
* accumulate data until we have a frame, then decode.
|
|
*/
|
|
static GstFlowReturn
|
|
gst_dvdemux_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
|
|
{
|
|
GstDVDemux *dvdemux;
|
|
GstFlowReturn ret;
|
|
GstClockTime timestamp;
|
|
|
|
dvdemux = GST_DVDEMUX (parent);
|
|
|
|
/* a discontinuity in the stream, we need to get rid of
|
|
* accumulated data in the adapter and assume a new frame
|
|
* starts after the discontinuity */
|
|
if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)))
|
|
gst_adapter_clear (dvdemux->adapter);
|
|
|
|
/* a timestamp always should be respected */
|
|
timestamp = GST_BUFFER_TIMESTAMP (buffer);
|
|
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
|
|
dvdemux->time_segment.position = timestamp;
|
|
/* FIXME, adjust frame_offset and other counters */
|
|
}
|
|
|
|
gst_adapter_push (dvdemux->adapter, buffer);
|
|
|
|
/* Apparently dv_parse_header can read from the body of the frame
|
|
* too, so it needs more than header_size bytes. Wacky!
|
|
*/
|
|
if (G_UNLIKELY (dvdemux->frame_len == -1)) {
|
|
/* if we don't know the length of a frame, we assume it is
|
|
* the NTSC_BUFFER length, as this is enough to figure out
|
|
* if this is PAL or NTSC */
|
|
dvdemux->frame_len = NTSC_BUFFER;
|
|
}
|
|
|
|
/* and try to flush pending frames */
|
|
ret = gst_dvdemux_flush (dvdemux);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* pull based operation.
|
|
*
|
|
* Read header first to figure out the frame size. Then read
|
|
* and decode full frames.
|
|
*/
|
|
static void
|
|
gst_dvdemux_loop (GstPad * pad)
|
|
{
|
|
GstFlowReturn ret;
|
|
GstDVDemux *dvdemux;
|
|
GstBuffer *buffer = NULL;
|
|
GstMapInfo map;
|
|
|
|
dvdemux = GST_DVDEMUX (gst_pad_get_parent (pad));
|
|
|
|
if (G_UNLIKELY (g_atomic_int_get (&dvdemux->found_header) == 0)) {
|
|
GST_DEBUG_OBJECT (dvdemux, "pulling first buffer");
|
|
/* pull in NTSC sized buffer to figure out the frame
|
|
* length */
|
|
ret = gst_pad_pull_range (dvdemux->sinkpad,
|
|
dvdemux->byte_segment.position, NTSC_BUFFER, &buffer);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
goto pause;
|
|
|
|
/* check buffer size, don't want to read small buffers */
|
|
if (G_UNLIKELY (gst_buffer_get_size (buffer) < NTSC_BUFFER))
|
|
goto small_buffer;
|
|
|
|
gst_buffer_map (buffer, &map, GST_MAP_READ);
|
|
/* parse header to know the length and other params */
|
|
if (G_UNLIKELY (dv_parse_header (dvdemux->decoder, map.data) < 0)) {
|
|
gst_buffer_unmap (buffer, &map);
|
|
goto parse_header_error;
|
|
}
|
|
gst_buffer_unmap (buffer, &map);
|
|
|
|
/* after parsing the header we know the length of the data */
|
|
dvdemux->frame_len = dvdemux->decoder->frame_size;
|
|
if (dvdemux->decoder->system == e_dv_system_625_50) {
|
|
dvdemux->framerate_numerator = PAL_FRAMERATE_NUMERATOR;
|
|
dvdemux->framerate_denominator = PAL_FRAMERATE_DENOMINATOR;
|
|
} else {
|
|
dvdemux->framerate_numerator = NTSC_FRAMERATE_NUMERATOR;
|
|
dvdemux->framerate_denominator = NTSC_FRAMERATE_DENOMINATOR;
|
|
}
|
|
dvdemux->need_segment = TRUE;
|
|
|
|
/* see if we need to read a larger part */
|
|
if (dvdemux->frame_len != NTSC_BUFFER) {
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
}
|
|
|
|
{
|
|
GstEvent *event;
|
|
|
|
/* setting header and prrforming the seek must be atomic */
|
|
GST_OBJECT_LOCK (dvdemux);
|
|
/* got header now */
|
|
g_atomic_int_set (&dvdemux->found_header, 1);
|
|
|
|
/* now perform pending seek if any. */
|
|
event = dvdemux->seek_event;
|
|
if (event)
|
|
gst_event_ref (event);
|
|
GST_OBJECT_UNLOCK (dvdemux);
|
|
|
|
if (event) {
|
|
if (!gst_dvdemux_handle_pull_seek (dvdemux, dvdemux->videosrcpad,
|
|
event)) {
|
|
GST_ELEMENT_WARNING (dvdemux, STREAM, DECODE, (NULL),
|
|
("Error perfoming initial seek"));
|
|
}
|
|
gst_event_unref (event);
|
|
|
|
/* and we need to pull a new buffer in all cases. */
|
|
if (buffer) {
|
|
gst_buffer_unref (buffer);
|
|
buffer = NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (G_UNLIKELY (dvdemux->pending_segment)) {
|
|
|
|
/* now send the newsegment */
|
|
GST_DEBUG_OBJECT (dvdemux, "Sending newsegment from");
|
|
|
|
gst_dvdemux_push_event (dvdemux, dvdemux->pending_segment);
|
|
dvdemux->pending_segment = NULL;
|
|
}
|
|
|
|
if (G_LIKELY (buffer == NULL)) {
|
|
GST_DEBUG_OBJECT (dvdemux, "pulling buffer at offset %" G_GINT64_FORMAT,
|
|
dvdemux->byte_segment.position);
|
|
|
|
ret = gst_pad_pull_range (dvdemux->sinkpad,
|
|
dvdemux->byte_segment.position, dvdemux->frame_len, &buffer);
|
|
if (ret != GST_FLOW_OK)
|
|
goto pause;
|
|
|
|
/* check buffer size, don't want to read small buffers */
|
|
if (gst_buffer_get_size (buffer) < dvdemux->frame_len)
|
|
goto small_buffer;
|
|
}
|
|
/* and decode the buffer */
|
|
ret = gst_dvdemux_demux_frame (dvdemux, buffer);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
goto pause;
|
|
|
|
/* and position ourselves for the next buffer */
|
|
dvdemux->byte_segment.position += dvdemux->frame_len;
|
|
|
|
done:
|
|
gst_object_unref (dvdemux);
|
|
|
|
return;
|
|
|
|
/* ERRORS */
|
|
parse_header_error:
|
|
{
|
|
GST_ELEMENT_ERROR (dvdemux, STREAM, DECODE,
|
|
(NULL), ("Error parsing DV header"));
|
|
gst_buffer_unref (buffer);
|
|
gst_pad_pause_task (dvdemux->sinkpad);
|
|
gst_dvdemux_push_event (dvdemux, gst_event_new_eos ());
|
|
goto done;
|
|
}
|
|
small_buffer:
|
|
{
|
|
GST_ELEMENT_ERROR (dvdemux, STREAM, DECODE,
|
|
(NULL), ("Error reading buffer"));
|
|
gst_buffer_unref (buffer);
|
|
gst_pad_pause_task (dvdemux->sinkpad);
|
|
gst_dvdemux_push_event (dvdemux, gst_event_new_eos ());
|
|
goto done;
|
|
}
|
|
pause:
|
|
{
|
|
GST_INFO_OBJECT (dvdemux, "pausing task, %s", gst_flow_get_name (ret));
|
|
gst_pad_pause_task (dvdemux->sinkpad);
|
|
if (ret == GST_FLOW_EOS) {
|
|
GST_LOG_OBJECT (dvdemux, "got eos");
|
|
/* so align our position with the end of it, if there is one
|
|
* this ensures a subsequent will arrive at correct base/acc time */
|
|
if (dvdemux->time_segment.rate > 0.0 &&
|
|
GST_CLOCK_TIME_IS_VALID (dvdemux->time_segment.stop))
|
|
dvdemux->time_segment.position = dvdemux->time_segment.stop;
|
|
else if (dvdemux->time_segment.rate < 0.0)
|
|
dvdemux->time_segment.position = dvdemux->time_segment.start;
|
|
/* perform EOS logic */
|
|
if (dvdemux->time_segment.flags & GST_SEEK_FLAG_SEGMENT) {
|
|
gst_element_post_message (GST_ELEMENT (dvdemux),
|
|
gst_message_new_segment_done (GST_OBJECT_CAST (dvdemux),
|
|
dvdemux->time_segment.format, dvdemux->time_segment.position));
|
|
gst_dvdemux_push_event (dvdemux,
|
|
gst_event_new_segment_done (dvdemux->time_segment.format,
|
|
dvdemux->time_segment.position));
|
|
} else {
|
|
gst_dvdemux_push_event (dvdemux, gst_event_new_eos ());
|
|
}
|
|
} else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS) {
|
|
/* for fatal errors or not-linked we post an error message */
|
|
GST_ELEMENT_ERROR (dvdemux, STREAM, FAILED,
|
|
(NULL), ("streaming stopped, reason %s", gst_flow_get_name (ret)));
|
|
gst_dvdemux_push_event (dvdemux, gst_event_new_eos ());
|
|
}
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_dvdemux_sink_activate_mode (GstPad * sinkpad, GstObject * parent,
|
|
GstPadMode mode, gboolean active)
|
|
{
|
|
gboolean res;
|
|
GstDVDemux *demux = GST_DVDEMUX (parent);
|
|
|
|
switch (mode) {
|
|
case GST_PAD_MODE_PULL:
|
|
if (active) {
|
|
demux->seek_handler = gst_dvdemux_handle_pull_seek;
|
|
res = gst_pad_start_task (sinkpad,
|
|
(GstTaskFunction) gst_dvdemux_loop, sinkpad, NULL);
|
|
} else {
|
|
demux->seek_handler = NULL;
|
|
res = gst_pad_stop_task (sinkpad);
|
|
}
|
|
break;
|
|
case GST_PAD_MODE_PUSH:
|
|
if (active) {
|
|
GST_DEBUG_OBJECT (demux, "activating push/chain function");
|
|
demux->seek_handler = gst_dvdemux_handle_push_seek;
|
|
} else {
|
|
GST_DEBUG_OBJECT (demux, "deactivating push/chain function");
|
|
demux->seek_handler = NULL;
|
|
}
|
|
res = TRUE;
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
/* decide on push or pull based scheduling */
|
|
static gboolean
|
|
gst_dvdemux_sink_activate (GstPad * sinkpad, GstObject * parent)
|
|
{
|
|
GstQuery *query;
|
|
gboolean pull_mode;
|
|
|
|
query = gst_query_new_scheduling ();
|
|
|
|
if (!gst_pad_peer_query (sinkpad, query)) {
|
|
gst_query_unref (query);
|
|
goto activate_push;
|
|
}
|
|
|
|
pull_mode = gst_query_has_scheduling_mode_with_flags (query,
|
|
GST_PAD_MODE_PULL, GST_SCHEDULING_FLAG_SEEKABLE);
|
|
gst_query_unref (query);
|
|
|
|
if (!pull_mode)
|
|
goto activate_push;
|
|
|
|
GST_DEBUG_OBJECT (sinkpad, "activating pull");
|
|
return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
|
|
|
|
activate_push:
|
|
{
|
|
GST_DEBUG_OBJECT (sinkpad, "activating push");
|
|
return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_dvdemux_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstDVDemux *dvdemux = GST_DVDEMUX (element);
|
|
GstStateChangeReturn ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
dvdemux->decoder = dv_decoder_new (0, FALSE, FALSE);
|
|
dv_set_error_log (dvdemux->decoder, NULL);
|
|
gst_dvdemux_reset (dvdemux);
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_adapter_clear (dvdemux->adapter);
|
|
dv_decoder_free (dvdemux->decoder);
|
|
dvdemux->decoder = NULL;
|
|
|
|
gst_dvdemux_remove_pads (dvdemux);
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
{
|
|
GstEvent **event_p;
|
|
|
|
event_p = &dvdemux->seek_event;
|
|
gst_event_replace (event_p, NULL);
|
|
if (dvdemux->pending_segment)
|
|
gst_event_unref (dvdemux->pending_segment);
|
|
dvdemux->pending_segment = NULL;
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|