docs/plugins/.cvsignore: Ignore *-undeclared.txt

Original commit message from CVS:
* docs/plugins/.cvsignore:
Ignore *-undeclared.txt
* ext/resindvd/rsnaudiomunge.c:
Turn g_print's into debug statements.
* ext/resindvd/resin-play:
* ext/resindvd/Makefile.am:
* ext/resindvd/resindvdbin.c:
* ext/resindvd/resindvdbin.h:
* ext/resindvd/rsnparsetter.c:
* ext/resindvd/rsnparsetter.h:
* ext/resindvd/rsnwrappedbuffer.c:
* ext/resindvd/rsnwrappedbuffer.h:
Add a bloated implementation of a really simple idea: Replace the
pixel-aspect-ratio in the output video with a prescribed one when
necessary. There must be an easier way.
Split the dvdspu out of the resindvdbin and put out the subpicture
stream on the subpicture pad.
* ext/resindvd/gstmpegdemux.c:
Send video-aspect events down the pipe from the demuxer.
* ext/resindvd/resindvdsrc.c:
* ext/resindvd/resindvdsrc.h:
Handle timed-stills somewhat using g_cond_timed_wait, with a FIXME
to make it use clock-waiting later.
* ext/resindvd/rsnbasesrc.c:
Don't overwrite the last_stop in the basesrc segment after a seamless
seek.

1 files changed, 405 insertions, 0 deletions

diff --git a/ext/resindvd/rsnparsetter.c b/ext/resindvd/rsnparsetter.c
new file mode 100644
index 000000000..65de2ac31
--- /dev/null
+++ b/ext/resindvd/rsnparsetter.c
@@ -0,0 +1,405 @@
+/*
+ * Copyright (C) 2008 Jan Schmidt <thaytan@noraisin.net>
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include <string.h>
+
+#include "rsnparsetter.h"
+#include "rsnwrappedbuffer.h"
+
+GST_DEBUG_CATEGORY_STATIC (rsn_parsetter_debug);
+#define GST_CAT_DEFAULT rsn_parsetter_debug
+
+static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-raw-rgb; video/x-raw-yuv")
+    );
+
+static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS ("video/x-raw-rgb; video/x-raw-yuv")
+    );
+
+static void rsn_parsetter_register_extra (GType rsn_parsetter_type);
+
+GST_BOILERPLATE_FULL (RsnParSetter, rsn_parsetter, GstElement,
+    GST_TYPE_ELEMENT, rsn_parsetter_register_extra);
+
+static void rsn_parsetter_finalize (GObject * object);
+static GstFlowReturn rsn_parsetter_chain (GstPad * pad, GstBuffer * buf);
+static gboolean rsn_parsetter_sink_event (GstPad * pad, GstEvent * event);
+static gboolean rsn_parsetter_sink_setcaps (GstPad * pad, GstCaps * caps);
+static GstFlowReturn rsn_parsetter_sink_bufferalloc (GstPad * pad,
+    guint64 offset, guint size, GstCaps * caps, GstBuffer ** buf);
+
+static GstCaps *rsn_parsetter_src_getcaps (GstPad * pad);
+static GstCaps *rsn_parsetter_convert_caps (RsnParSetter * parset,
+    GstCaps * caps, gboolean widescreen);
+static gboolean rsn_parsetter_check_caps (RsnParSetter * parset,
+    GstCaps * caps);
+
+static void
+rsn_parsetter_register_extra (GType rsn_parsetter_type)
+{
+  GST_DEBUG_CATEGORY_INIT (rsn_parsetter_debug, "rsnparsetter", 0,
+      "Resin DVD aspect ratio adjuster");
+}
+
+static void
+rsn_parsetter_base_init (gpointer gclass)
+{
+  static GstElementDetails element_details = {
+    "Resin Aspect Ratio Setter",
+    "Filter/Video",
+    "Overrides caps on video buffers to force a particular display ratio",
+    "Jan Schmidt <thaytan@noraisin.net>"
+  };
+  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_factory));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
+  gst_element_class_set_details (element_class, &element_details);
+}
+
+static void
+rsn_parsetter_class_init (RsnParSetterClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+
+  gobject_class->finalize = rsn_parsetter_finalize;
+}
+
+static void
+rsn_parsetter_init (RsnParSetter * parset, RsnParSetterClass * gclass)
+{
+  parset->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
+  gst_pad_set_getcaps_function (parset->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
+  gst_pad_set_chain_function (parset->sinkpad,
+      GST_DEBUG_FUNCPTR (rsn_parsetter_chain));
+  gst_pad_set_event_function (parset->sinkpad,
+      GST_DEBUG_FUNCPTR (rsn_parsetter_sink_event));
+  gst_pad_set_setcaps_function (parset->sinkpad,
+      GST_DEBUG_FUNCPTR (rsn_parsetter_sink_setcaps));
+  gst_pad_set_bufferalloc_function (parset->sinkpad,
+      GST_DEBUG_FUNCPTR (rsn_parsetter_sink_bufferalloc));
+  gst_element_add_pad (GST_ELEMENT (parset), parset->sinkpad);
+
+  parset->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
+  gst_pad_set_getcaps_function (parset->srcpad,
+      GST_DEBUG_FUNCPTR (rsn_parsetter_src_getcaps));
+  gst_element_add_pad (GST_ELEMENT (parset), parset->srcpad);
+
+  parset->caps_lock = g_mutex_new ();
+}
+
+static void
+rsn_parsetter_finalize (GObject * object)
+{
+  RsnParSetter *parset = RSN_PARSETTER (object);
+
+  gst_caps_replace (&parset->outcaps, NULL);
+  gst_caps_replace (&parset->in_caps_last, NULL);
+  gst_caps_replace (&parset->in_caps_converted, NULL);
+
+  g_mutex_free (parset->caps_lock);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static GstFlowReturn
+rsn_parsetter_chain (GstPad * pad, GstBuffer * buf)
+{
+  RsnParSetter *parset = RSN_PARSETTER (GST_OBJECT_PARENT (pad));
+
+  /* If this is a buffer we wrapped up earlier, unwrap it now */
+  if (RSN_IS_WRAPPEDBUFFER (buf)) {
+    RsnWrappedBuffer *wrap_buf = RSN_WRAPPEDBUFFER (buf);
+
+    if (wrap_buf->owner == GST_ELEMENT (parset)) {
+      buf = rsn_wrappedbuffer_unwrap_and_unref (wrap_buf);
+      GST_DEBUG_OBJECT (parset, "Unwrapping %p yields buffer %p with caps %"
+          GST_PTR_FORMAT, wrap_buf, buf, GST_BUFFER_CAPS (buf));
+    }
+  }
+
+  if (parset->outcaps != GST_BUFFER_CAPS (buf)) {
+    if (parset->override_outcaps == FALSE &&
+        gst_caps_is_equal (parset->outcaps, GST_BUFFER_CAPS (buf))) {
+      /* Just update our output caps var */
+      gst_caps_replace (&parset->outcaps, GST_BUFFER_CAPS (buf));
+      goto out;
+    }
+
+    /* Replace the caps on the output buffer */
+    buf = gst_buffer_make_metadata_writable (buf);
+    gst_buffer_set_caps (buf, parset->outcaps);
+
+    GST_DEBUG_OBJECT (parset,
+        "Replacing caps on buffer %p with caps %" GST_PTR_FORMAT,
+        buf, parset->outcaps);
+  }
+
+out:
+  return gst_pad_push (parset->srcpad, buf);
+}
+
+static gboolean
+rsn_parsetter_sink_event (GstPad * pad, GstEvent * event)
+{
+  RsnParSetter *parset = RSN_PARSETTER (gst_pad_get_parent (pad));
+  const GstStructure *structure = gst_event_get_structure (event);
+
+  if (structure != NULL &&
+      gst_structure_has_name (structure, "application/x-gst-dvd")) {
+    const char *type = gst_structure_get_string (structure, "event");
+    if (type == NULL)
+      goto out;
+
+    if (strcmp (type, "dvd-video-format") == 0) {
+      gboolean is_widescreen;
+
+      gst_structure_get_boolean (structure, "video-widescreen", &is_widescreen);
+
+      GST_DEBUG_OBJECT (parset, "Video is %s",
+          parset->is_widescreen ? "16:9" : "4:3");
+
+      g_mutex_lock (parset->caps_lock);
+      if (parset->is_widescreen != is_widescreen) {
+        /* Force caps check */
+        gst_caps_replace (&parset->in_caps_last, NULL);
+        gst_caps_replace (&parset->in_caps_converted, NULL);
+      }
+      parset->is_widescreen = is_widescreen;
+
+      /* FIXME: Added for testing: */
+      // parset->is_widescreen = FALSE;
+
+      g_mutex_unlock (parset->caps_lock);
+    }
+  }
+
+out:
+  gst_object_unref (GST_OBJECT (parset));
+  return gst_pad_event_default (pad, event);
+}
+
+static GstCaps *
+rsn_parsetter_src_getcaps (GstPad * pad)
+{
+  RsnParSetter *parset = RSN_PARSETTER (gst_pad_get_parent (pad));
+  GstCaps *ret;
+  const GstCaps *templ_caps = gst_pad_get_pad_template_caps (pad);
+
+  ret = gst_pad_peer_get_caps (parset->sinkpad);
+  if (ret == NULL)
+    ret = gst_caps_copy (templ_caps);
+  else {
+    GstCaps *temp;
+    temp = gst_caps_intersect (templ_caps, ret);
+    gst_caps_unref (ret);
+    ret = rsn_parsetter_convert_caps (parset, temp, parset->is_widescreen);
+    gst_caps_unref (temp);
+  }
+
+  gst_object_unref (parset);
+  return ret;
+}
+
+static gboolean
+rsn_parsetter_check_caps (RsnParSetter * parset, GstCaps * caps)
+{
+  GstStructure *s;
+  gint width, height;
+  gint par_n, par_d;
+  guint dar_n, dar_d;
+  gboolean ret = FALSE;
+
+  g_mutex_lock (parset->caps_lock);
+
+  if (caps == parset->in_caps_last ||
+      gst_caps_is_equal (caps, parset->in_caps_last)) {
+    ret = parset->in_caps_was_ok;
+    goto out;
+  }
+
+  /* Calculate the DAR from the incoming caps, and return TRUE if it matches
+   * the required DAR, FALSE if not */
+  s = gst_caps_get_structure (caps, 0);
+  if (s == NULL)
+    goto out;
+
+  if (!gst_structure_get_int (s, "width", &width) ||
+      !gst_structure_get_int (s, "height", &height))
+    goto out;
+
+  if (!gst_structure_get_fraction (s, "pixel-aspect-ratio", &par_n, &par_d))
+    par_n = par_d = 1;
+
+  if (!gst_video_calculate_display_ratio (&dar_n, &dar_d, width, height,
+          par_n, par_d, 1, 1))
+    goto out;
+
+  GST_DEBUG_OBJECT (parset,
+      "Incoming video caps now: w %d h %d PAR %d/%d = DAR %d/%d",
+      width, height, par_n, par_d, dar_n, dar_d);
+
+  if (parset->is_widescreen) {
+    if (dar_n == 16 && dar_d == 9)
+      ret = TRUE;
+  } else {
+    if (dar_n == 4 && dar_d == 3)
+      ret = TRUE;
+  }
+
+  gst_caps_replace (&parset->in_caps_last, caps);
+  gst_caps_replace (&parset->in_caps_converted, NULL);
+  parset->in_caps_was_ok = ret;
+
+out:
+  g_mutex_unlock (parset->caps_lock);
+  return ret;
+}
+
+static GstCaps *
+rsn_parsetter_convert_caps (RsnParSetter * parset, GstCaps * caps,
+    gboolean widescreen)
+{
+  /* Duplicate the given caps, with a PAR that provides the desired DAR */
+  GstCaps *outcaps;
+  GstStructure *s;
+  gint width, height;
+  gint par_n, par_d;
+  guint dar_n, dar_d;
+  GValue par = { 0, };
+
+  g_mutex_lock (parset->caps_lock);
+  if (caps == parset->in_caps_last && parset->in_caps_converted) {
+    outcaps = gst_caps_ref (parset->in_caps_converted);
+    goto out;
+  }
+
+  outcaps = gst_caps_copy (caps);
+
+  /* Calculate the DAR from the incoming caps, and return TRUE if it matches
+   * the required DAR, FALSE if not */
+  s = gst_caps_get_structure (outcaps, 0);
+  if (s == NULL)
+    goto out;
+
+  if (!gst_structure_get_int (s, "width", &width) ||
+      !gst_structure_get_int (s, "height", &height))
+    goto out;
+
+  if (widescreen) {
+    dar_n = 16;
+    dar_d = 9;
+  } else {
+    dar_n = 4;
+    dar_d = 3;
+  }
+
+  par_n = dar_n * height;
+  par_d = dar_d * width;
+
+  g_value_init (&par, GST_TYPE_FRACTION);
+  gst_value_set_fraction (&par, par_n, par_d);
+  gst_structure_set_value (s, "pixel-aspect-ratio", &par);
+  g_value_unset (&par);
+
+  gst_caps_replace (&parset->in_caps_converted, outcaps);
+out:
+  g_mutex_unlock (parset->caps_lock);
+  return outcaps;
+}
+
+static gboolean
+rsn_parsetter_sink_setcaps (GstPad * pad, GstCaps * caps)
+{
+  /* Check the new incoming caps against our current DAR, and mark
+   * whether the buffers will need adjusting */
+  RsnParSetter *parset = RSN_PARSETTER (gst_pad_get_parent (pad));
+
+  if (rsn_parsetter_check_caps (parset, caps)) {
+    parset->override_outcaps = FALSE;
+    gst_caps_replace (&parset->outcaps, caps);
+  } else {
+    GstCaps *override_caps = rsn_parsetter_convert_caps (parset, caps,
+        parset->is_widescreen);
+    if (parset->outcaps)
+      gst_caps_unref (parset->outcaps);
+    parset->outcaps = override_caps;
+
+    parset->override_outcaps = TRUE;
+  }
+
+  GST_DEBUG_OBJECT (parset, "caps changed: need_override now = %d",
+      parset->override_outcaps);
+
+  gst_object_unref (parset);
+  return TRUE;
+}
+
+static GstFlowReturn
+rsn_parsetter_sink_bufferalloc (GstPad * pad, guint64 offset, guint size,
+    GstCaps * caps, GstBuffer ** buf)
+{
+  RsnParSetter *parset = RSN_PARSETTER (gst_pad_get_parent (pad));
+  GstFlowReturn ret;
+
+  GST_LOG_OBJECT (parset, "Entering bufferalloc");
+
+  if (rsn_parsetter_check_caps (parset, caps)) {
+    ret = gst_pad_alloc_buffer (parset->srcpad, offset, size, caps, buf);
+    GST_LOG_OBJECT (parset, "Not wrapping buf %p", *buf);
+  } else {
+    /* Allocate and wrap a downstream buffer */
+    GstBuffer *orig_buf;
+    GstBuffer *outbuf;
+    GstCaps *override_caps = rsn_parsetter_convert_caps (parset, caps,
+        parset->is_widescreen);
+
+    ret = gst_pad_alloc_buffer (parset->srcpad, offset, size,
+        override_caps, &orig_buf);
+    gst_caps_unref (override_caps);
+
+    if (ret != GST_FLOW_OK)
+      return ret;
+
+    outbuf = (GstBuffer *) rsn_wrapped_buffer_new (orig_buf);
+    if (!outbuf) {
+      /* FIXME: Throw error */
+      return GST_FLOW_ERROR;
+    }
+
+    rsn_wrapped_buffer_set_owner (RSN_WRAPPEDBUFFER (outbuf),
+        GST_ELEMENT (parset));
+
+    gst_buffer_set_caps (outbuf, caps);
+
+    GST_LOG_OBJECT (parset,
+        "Wrapped ds buf %p with caps %" GST_PTR_FORMAT
+        " into new buf %p with caps %" GST_PTR_FORMAT,
+        orig_buf, GST_BUFFER_CAPS (orig_buf), outbuf, GST_BUFFER_CAPS (outbuf));
+
+    *buf = outbuf;
+  }
+
+  gst_object_unref (GST_OBJECT (parset));
+
+  return ret;
+}