mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-27 12:11:13 +00:00
Code Issues 1 Projects Releases Wiki Activity

amrparse: use (default) time handling of baseparser class

Browse source
This commit is contained in:
Mark Nauwelaerts 2009-11-26 18:34:45 +01:00
parent 502011501b
commit 15f1b7e97f
2 changed files with 3 additions and 182 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

180
gst/audioparsers/gstamrparse.c
View file

@ -88,12 +88,6 @@ gboolean gst_amrparse_check_valid_frame (GstBaseParse * parse,
GstFlowReturn gst_amrparse_parse_frame (GstBaseParse * parse,
GstBuffer * buffer);
gboolean gst_amrparse_convert (GstBaseParse * parse,
GstFormat src_format,
gint64 src_value, GstFormat dest_format, gint64 * dest_value);
gboolean gst_amrparse_event (GstBaseParse * parse, GstEvent * event);
#define _do_init(bla) \
GST_DEBUG_CATEGORY_INIT (gst_amrparse_debug, "amrparse", 0, \
"AMR-NB audio stream parser");
@ -140,8 +134,6 @@ gst_amrparse_class_init (GstAmrParseClass * klass)
parse_class->start = GST_DEBUG_FUNCPTR (gst_amrparse_start);
parse_class->stop = GST_DEBUG_FUNCPTR (gst_amrparse_stop);
parse_class->event = GST_DEBUG_FUNCPTR (gst_amrparse_event);
parse_class->convert = GST_DEBUG_FUNCPTR (gst_amrparse_convert);
parse_class->set_sink_caps = GST_DEBUG_FUNCPTR (gst_amrparse_sink_setcaps);
parse_class->parse_frame = GST_DEBUG_FUNCPTR (gst_amrparse_parse_frame);
parse_class->check_valid_frame =
@ -160,7 +152,6 @@ gst_amrparse_init (GstAmrParse * amrparse, GstAmrParseClass * klass)
{
/* init rest */
gst_base_parse_set_min_frame_size (GST_BASE_PARSE (amrparse), 62);
amrparse->ts = 0;
GST_DEBUG ("initialized");
}
@ -247,47 +238,11 @@ gst_amrparse_sink_setcaps (GstBaseParse * parse, GstCaps * caps)
}
amrparse->need_header = FALSE;
gst_base_parse_set_frame_props (GST_BASE_PARSE (amrparse), 50, 1, 50);
gst_amrparse_set_src_caps (amrparse);
return TRUE;
}
/**
* gst_amrparse_update_duration:
* @amrparse: #GstAmrParse.
*
* Send duration information to base class.
*/
static void
gst_amrparse_update_duration (GstAmrParse * amrparse)
{
GstPad *peer;
GstBaseParse *parse;
parse = GST_BASE_PARSE (amrparse);
/* Cannot estimate duration. No data has been passed to us yet */
if (!amrparse->framecount) {
return;
}
peer = gst_pad_get_peer (parse->sinkpad);
if (peer) {
GstFormat pformat = GST_FORMAT_BYTES;
guint64 bpf = amrparse->bytecount / amrparse->framecount;
gboolean qres = FALSE;
gint64 ptot;
qres = gst_pad_query_duration (peer, &pformat, &ptot);
gst_object_unref (GST_OBJECT (peer));
if (qres && bpf) {
gst_base_parse_set_duration (parse, GST_FORMAT_TIME,
AMR_FRAME_DURATION * ptot / bpf);
}
}
}
/**
* gst_amrparse_parse_header:
* @amrparse: #GstAmrParse
@ -348,15 +303,11 @@ gst_amrparse_check_valid_frame (GstBaseParse * parse,
GST_LOG ("buffer: %d bytes", dsize);
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
/* Discontinuous stream -> drop the sync */
amrparse->sync = FALSE;
}
if (amrparse->need_header) {
if (dsize >= AMR_MIME_HEADER_SIZE &&
gst_amrparse_parse_header (amrparse, data, skipsize)) {
amrparse->need_header = FALSE;
gst_base_parse_set_frame_props (GST_BASE_PARSE (amrparse), 50, 1, 50);
} else {
GST_WARNING ("media doesn't look like a AMR format");
}
@ -378,16 +329,14 @@ gst_amrparse_check_valid_frame (GstBaseParse * parse,
* to contain a valid header as well (and there is enough data to
* perform this check)
*/
if (amrparse->sync || amrparse->eos ||
if (gst_base_parse_get_sync (parse) || gst_base_parse_get_drain (parse) ||
(dsize >= fsize && (data[fsize] & 0x83) == 0)) {
amrparse->sync = TRUE;
*framesize = fsize;
return TRUE;
}
}
GST_LOG ("sync lost");
amrparse->sync = FALSE;
return FALSE;
}
@ -408,29 +357,6 @@ gst_amrparse_parse_frame (GstBaseParse * parse, GstBuffer * buffer)
amrparse = GST_AMRPARSE (parse);
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
gint64 btime;
gboolean r = gst_amrparse_convert (parse, GST_FORMAT_BYTES,
GST_BUFFER_OFFSET (buffer),
GST_FORMAT_TIME, &btime);
if (r) {
/* FIXME: What to do if the conversion fails? */
amrparse->ts = btime;
}
}
GST_BUFFER_DURATION (buffer) = AMR_FRAME_DURATION;
GST_BUFFER_TIMESTAMP (buffer) = amrparse->ts;
if (GST_CLOCK_TIME_IS_VALID (amrparse->ts)) {
amrparse->ts += AMR_FRAME_DURATION;
}
if (!(++amrparse->framecount % 50)) {
gst_amrparse_update_duration (amrparse);
}
amrparse->bytecount += GST_BUFFER_SIZE (buffer);
gst_buffer_set_caps (buffer, GST_PAD_CAPS (parse->srcpad));
return GST_FLOW_OK;
}
@ -453,11 +379,6 @@ gst_amrparse_start (GstBaseParse * parse)
GST_DEBUG ("start");
amrparse->need_header = TRUE;
amrparse->header = 0;
amrparse->sync = TRUE;
amrparse->eos = FALSE;
amrparse->framecount = 0;
amrparse->bytecount = 0;
amrparse->ts = 0;
return TRUE;
}
@ -479,100 +400,5 @@ gst_amrparse_stop (GstBaseParse * parse)
GST_DEBUG ("stop");
amrparse->need_header = TRUE;
amrparse->header = 0;
amrparse->ts = -1;
return TRUE;
}
/**
* gst_amrparse_event:
* @parse: #GstBaseParse.
* @event: #GstEvent.
*
* Implementation of "event" vmethod in #GstBaseParse class.
*
* Returns: TRUE if the event was handled and can be dropped.
*/
gboolean
gst_amrparse_event (GstBaseParse * parse, GstEvent * event)
{
GstAmrParse *amrparse;
amrparse = GST_AMRPARSE (parse);
GST_DEBUG ("event");
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
amrparse->eos = TRUE;
GST_DEBUG ("EOS event");
break;
default:
break;
}
return parent_class->event (parse, event);
}
/**
* gst_amrparse_convert:
* @parse: #GstBaseParse.
* @src_format: #GstFormat describing the source format.
* @src_value: Source value to be converted.
* @dest_format: #GstFormat defining the converted format.
* @dest_value: Pointer where the conversion result will be put.
*
* Implementation of "convert" vmethod in #GstBaseParse class.
*
* Returns: TRUE if conversion was successful.
*/
gboolean
gst_amrparse_convert (GstBaseParse * parse,
GstFormat src_format,
gint64 src_value, GstFormat dest_format, gint64 * dest_value)
{
gboolean ret = FALSE;
GstAmrParse *amrparse;
gfloat bpf;
amrparse = GST_AMRPARSE (parse);
/* We are not able to do any estimations until some data has been passed */
if (!amrparse->framecount)
return FALSE;
bpf = (gfloat) amrparse->bytecount / amrparse->framecount;
if (src_format == GST_FORMAT_BYTES) {
if (dest_format == GST_FORMAT_TIME) {
/* BYTES -> TIME conversion */
GST_DEBUG ("converting bytes -> time");
if (amrparse->framecount) {
*dest_value = AMR_FRAME_DURATION * (src_value - amrparse->header) / bpf;
GST_DEBUG ("conversion result: %" G_GINT64_FORMAT " ms",
*dest_value / GST_MSECOND);
ret = TRUE;
}
}
} else if (src_format == GST_FORMAT_TIME) {
GST_DEBUG ("converting time -> bytes");
if (dest_format == GST_FORMAT_BYTES) {
if (amrparse->framecount) {
*dest_value = bpf * src_value / AMR_FRAME_DURATION + amrparse->header;
GST_DEBUG ("time %" G_GINT64_FORMAT " ms in bytes = %" G_GINT64_FORMAT,
src_value / GST_MSECOND, *dest_value);
ret = TRUE;
}
}
} else if (src_format == GST_FORMAT_DEFAULT) {
/* DEFAULT == frame-based */
if (dest_format == GST_FORMAT_TIME) {
*dest_value = src_value * AMR_FRAME_DURATION;
ret = TRUE;
} else if (dest_format == GST_FORMAT_BYTES) {
}
}
return ret;
}

5
gst/audioparsers/gstamrparse.h
View file

@ -63,11 +63,6 @@ struct _GstAmrParse {
gboolean need_header;
gint header;
gboolean wide;
gboolean eos;
gboolean sync;
guint64 framecount;
guint64 bytecount;
GstClockTime ts;
};
/**