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-rw-r--r--ext/dv/gstdvdec.c177
-rw-r--r--ext/dv/gstdvdec.h1
2 files changed, 135 insertions, 43 deletions
diff --git a/ext/dv/gstdvdec.c b/ext/dv/gstdvdec.c
index 3ac150b6..5ab247fe 100644
--- a/ext/dv/gstdvdec.c
+++ b/ext/dv/gstdvdec.c
@@ -119,11 +119,41 @@ GST_PAD_TEMPLATE_FACTORY ( audio_src_temp,
)
)
+/* typefind stuff */
+static GstCaps*
+dv_type_find (GstBuffer *buf, gpointer private)
+{
+ gulong head = GULONG_FROM_BE(*((gulong *)GST_BUFFER_DATA(buf)));
+ GstCaps *new = NULL;
+
+ /* check for DIF and DV flag */
+ if ((head & 0xffffff00) == 0x1f070000 && !(GST_BUFFER_DATA(buf)[4] & 0x01)) {
+ gchar *format;
+
+ if ((head & 0x000000ff) & 0x80)
+ format = "PAL";
+ else
+ format = "NTSC";
+
+ new = GST_CAPS_NEW ("dv_type_find",
+ "video/dv",
+ "format", GST_PROPS_STRING (format)
+ );
+ }
+ return new;
+}
+
+static GstTypeDefinition dv_definition = {
+ "dv_video/dv", "video/dv", ".dv", dv_type_find
+};
/* A number of functon prototypes are given so we can refer to them later. */
static void gst_dvdec_class_init (GstDVDecClass *klass);
static void gst_dvdec_init (GstDVDec *dvdec);
+static gboolean gst_dvdec_src_query (GstPad *pad, GstPadQueryType type,
+ GstFormat *format, gint64 *value);
+
static void gst_dvdec_loop (GstElement *element);
static GstElementStateReturn
@@ -212,12 +242,15 @@ gst_dvdec_init(GstDVDec *dvdec)
dvdec->sinkpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (sink_temp), "sink");
gst_element_add_pad (GST_ELEMENT (dvdec), dvdec->sinkpad);
+ gst_pad_set_query_function (dvdec->sinkpad, NULL);
dvdec->videosrcpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (video_src_temp), "video");
gst_element_add_pad (GST_ELEMENT (dvdec), dvdec->videosrcpad);
+ gst_pad_set_query_function (dvdec->videosrcpad, gst_dvdec_src_query);
dvdec->audiosrcpad = gst_pad_new_from_template (GST_PAD_TEMPLATE_GET(audio_src_temp), "audio");
gst_element_add_pad(GST_ELEMENT(dvdec),dvdec->audiosrcpad);
+ gst_pad_set_query_function (dvdec->audiosrcpad, gst_dvdec_src_query);
gst_element_set_loop_function (GST_ELEMENT (dvdec), gst_dvdec_loop);
@@ -225,6 +258,7 @@ gst_dvdec_init(GstDVDec *dvdec)
dvdec->decoder->quality = DV_QUALITY_BEST;
dvdec->pool = NULL;
dvdec->length = 0;
+ dvdec->next_ts = 0LL;
for (i = 0; i <4; i++) {
dvdec->audio_buffers[i] = (gint16 *)g_malloc (DV_AUDIO_MAX_SAMPLES * sizeof (gint16));
@@ -232,6 +266,44 @@ gst_dvdec_init(GstDVDec *dvdec)
}
static gboolean
+gst_dvdec_src_query (GstPad *pad, GstPadQueryType type,
+ GstFormat *format, gint64 *value)
+{
+ gboolean res = TRUE;
+ GstDVDec *dvdec;
+
+ dvdec = GST_DVDEC (gst_pad_get_parent (pad));
+
+ switch (type) {
+ case GST_PAD_QUERY_TOTAL:
+ switch (*format) {
+ case GST_FORMAT_DEFAULT:
+ *format = GST_FORMAT_TIME;
+ case GST_FORMAT_TIME:
+ *value = 0;
+ break;
+ default:
+ res = FALSE;
+ break;
+ }
+ break;
+ case GST_PAD_QUERY_POSITION:
+ switch (*format) {
+ case GST_FORMAT_DEFAULT:
+ *format = GST_FORMAT_TIME;
+ default:
+ *value = dvdec->next_ts;
+ break;
+ }
+ break;
+ default:
+ res = FALSE;
+ break;
+ }
+ return res;
+}
+
+static gboolean
gst_dvdec_handle_event (GstDVDec *dvdec)
{
guint32 remaining;
@@ -273,14 +345,11 @@ gst_dvdec_loop (GstElement *element)
GstDVDec *dvdec;
GstBuffer *buf, *outbuf;
guint8 *inframe;
- guint8 *outframe;
- guint8 *outframe_ptrs[3];
- gint outframe_pitches[3];
gboolean PAL;
gint height;
guint32 length, got_bytes;
- gint16 *a_ptr;
- gint i, j;
+ GstFormat format;
+ guint64 ts;
dvdec = GST_DVDEC (element);
@@ -374,56 +443,76 @@ gst_dvdec_loop (GstElement *element)
));
}
- dv_decode_full_audio (dvdec->decoder, GST_BUFFER_DATA (buf), dvdec->audio_buffers);
+ format = GST_FORMAT_TIME;
+ gst_pad_query (dvdec->videosrcpad, GST_PAD_QUERY_POSITION, &format, &ts);
- outbuf = gst_buffer_new ();
- GST_BUFFER_SIZE (outbuf) = dvdec->decoder->audio->samples_this_frame * sizeof (gint16) * dvdec->decoder->audio->num_channels;
- GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
+ if (GST_PAD_IS_CONNECTED (dvdec->audiosrcpad)) {
+ gint16 *a_ptr;
+ gint i, j;
- a_ptr = (gint16 *) GST_BUFFER_DATA (outbuf);
+ dv_decode_full_audio (dvdec->decoder, GST_BUFFER_DATA (buf), dvdec->audio_buffers);
- for (i = 0; i < dvdec->decoder->audio->samples_this_frame; i++) {
- for (j = 0; j < dvdec->decoder->audio->num_channels; j++) {
- *(a_ptr++) = dvdec->audio_buffers[j][i];
+ outbuf = gst_buffer_new ();
+ GST_BUFFER_SIZE (outbuf) = dvdec->decoder->audio->samples_this_frame * sizeof (gint16) * dvdec->decoder->audio->num_channels;
+ GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
+
+ a_ptr = (gint16 *) GST_BUFFER_DATA (outbuf);
+
+ for (i = 0; i < dvdec->decoder->audio->samples_this_frame; i++) {
+ for (j = 0; j < dvdec->decoder->audio->num_channels; j++) {
+ *(a_ptr++) = dvdec->audio_buffers[j][i];
+ }
}
- }
- gst_pad_push (dvdec->audiosrcpad, outbuf);
+ GST_BUFFER_TIMESTAMP (outbuf) = ts;
- /* try to grab a pool */
- if (!dvdec->pool) {
- dvdec->pool = gst_pad_get_bufferpool (dvdec->videosrcpad);
+ gst_pad_push (dvdec->audiosrcpad, outbuf);
}
- outbuf = NULL;
- /* try to get a buffer from the pool if we have one */
- if (dvdec->pool) {
- outbuf = gst_buffer_new_from_pool (dvdec->pool, 0, 0);
- }
- /* no buffer from pool, allocate one ourselves */
- if (!outbuf) {
- outbuf = gst_buffer_new ();
-
- GST_BUFFER_SIZE (outbuf) = (720 * height) * dvdec->bpp;
- GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
- }
+ if (GST_PAD_IS_CONNECTED (dvdec->videosrcpad)) {
+ guint8 *outframe;
+ guint8 *outframe_ptrs[3];
+ gint outframe_pitches[3];
+
+ /* try to grab a pool */
+ if (!dvdec->pool) {
+ dvdec->pool = gst_pad_get_bufferpool (dvdec->videosrcpad);
+ }
+ outbuf = NULL;
+ /* try to get a buffer from the pool if we have one */
+ if (dvdec->pool) {
+ outbuf = gst_buffer_new_from_pool (dvdec->pool, 0, 0);
+ }
+ /* no buffer from pool, allocate one ourselves */
+ if (!outbuf) {
+ outbuf = gst_buffer_new ();
+
+ GST_BUFFER_SIZE (outbuf) = (720 * height) * dvdec->bpp;
+ GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
+ }
- outframe = GST_BUFFER_DATA (outbuf);
+ outframe = GST_BUFFER_DATA (outbuf);
- outframe_ptrs[0] = outframe;
- outframe_ptrs[1] = outframe_ptrs[0] + 720 * height;
- outframe_ptrs[2] = outframe_ptrs[1] + 360 * height;
+ outframe_ptrs[0] = outframe;
+ outframe_ptrs[1] = outframe_ptrs[0] + 720 * height;
+ outframe_ptrs[2] = outframe_ptrs[1] + 360 * height;
- outframe_pitches[0] = 720 * dvdec->bpp;
- outframe_pitches[1] = height / 2;
- outframe_pitches[2] = height / 2;
+ outframe_pitches[0] = 720 * dvdec->bpp;
+ outframe_pitches[1] = height / 2;
+ outframe_pitches[2] = height / 2;
- dv_decode_full_frame (dvdec->decoder, GST_BUFFER_DATA (buf),
- dvdec->space, outframe_ptrs, outframe_pitches);
+ dv_decode_full_frame (dvdec->decoder, GST_BUFFER_DATA (buf),
+ dvdec->space, outframe_ptrs, outframe_pitches);
- gst_buffer_unref (buf);
+ GST_BUFFER_TIMESTAMP (outbuf) = ts;
+
+ gst_pad_push (dvdec->videosrcpad, outbuf);
+ }
- gst_pad_push (dvdec->videosrcpad, outbuf);
+ /* FIXME this is inaccurate for NTSC */
+ dvdec->next_ts += GST_SECOND / (PAL ? 25 : 30);
+
+ gst_buffer_unref (buf);
}
static GstElementStateReturn
@@ -456,8 +545,6 @@ gst_dvdec_change_state (GstElement *element)
return GST_STATE_SUCCESS;
}
-
-
/* Arguments are part of the Gtk+ object system, and these functions
* enable the element to respond to various arguments.
*/
@@ -503,6 +590,7 @@ static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
+ GstTypeFactory *type;
if (!gst_library_load ("gstbytestream")) {
gst_info("dvdec: could not load support library: 'gstbytestream'\n");
@@ -529,6 +617,9 @@ plugin_init (GModule *module, GstPlugin *plugin)
/* The very last thing is to register the elementfactory with the plugin. */
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+ type = gst_type_factory_new (&dv_definition);
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type));
+
return TRUE;
}
diff --git a/ext/dv/gstdvdec.h b/ext/dv/gstdvdec.h
index dc62b2d9..2ff055e3 100644
--- a/ext/dv/gstdvdec.h
+++ b/ext/dv/gstdvdec.h
@@ -54,6 +54,7 @@ struct _GstDVDec {
dv_color_space_t space;
gint bpp;
gint length;
+ guint64 next_ts;
gint16 *audio_buffers[4];
};
generated by cgit (git 2.34.1) at 2024-06-30 04:03:17 +0000