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aacparse: use (default) time handling of baseparser class

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This commit is contained in:
Mark Nauwelaerts 2009-11-05 14:31:40 +01:00
parent d4c89e2492
commit 64d6d5554e
2 changed files with 11 additions and 192 deletions
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195
gst/aacparse/gstaacparse.c
View file

@ -156,8 +156,6 @@ gst_aacparse_class_init (GstAacParseClass * klass)
parse_class->start = GST_DEBUG_FUNCPTR (gst_aacparse_start);
parse_class->stop = GST_DEBUG_FUNCPTR (gst_aacparse_stop);
parse_class->event = GST_DEBUG_FUNCPTR (gst_aacparse_event);
parse_class->convert = GST_DEBUG_FUNCPTR (gst_aacparse_convert);
parse_class->set_sink_caps = GST_DEBUG_FUNCPTR (gst_aacparse_sink_setcaps);
parse_class->is_seekable = GST_DEBUG_FUNCPTR (gst_aacparse_is_seekable);
parse_class->parse_frame = GST_DEBUG_FUNCPTR (gst_aacparse_parse_frame);
@ -177,7 +175,6 @@ gst_aacparse_init (GstAacParse * aacparse, GstAacParseClass * klass)
{
/* init rest */
gst_base_parse_set_min_frame_size (GST_BASE_PARSE (aacparse), 1024);
aacparse->ts = 0;
GST_DEBUG ("initialized");
}
@ -294,41 +291,6 @@ gst_aacparse_sink_setcaps (GstBaseParse * parse, GstCaps * caps)
}
/**
* gst_aacparse_update_duration:
* @aacparse: #GstAacParse.
*
*/
static void
gst_aacparse_update_duration (GstAacParse * aacparse)
{
GstPad *peer;
GstBaseParse *parse;
parse = GST_BASE_PARSE (aacparse);
/* Cannot estimate duration. No data has been passed to us yet */
if (!aacparse->framecount || !aacparse->frames_per_sec) {
return;
}
peer = gst_pad_get_peer (parse->sinkpad);
if (peer) {
GstFormat pformat = GST_FORMAT_BYTES;
guint64 bpf = aacparse->bytecount / aacparse->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,
AAC_FRAME_DURATION (aacparse) * ptot / bpf);
}
}
}
/**
* gst_aacparse_adts_get_frame_len:
* @data: block of data containing an ADTS header.
@ -384,7 +346,7 @@ gst_aacparse_check_adts_frame (GstAacParse * aacparse,
*framesize = gst_aacparse_adts_get_frame_len (data);
/* In EOS mode this is enough. No need to examine the data further */
if (aacparse->eos) {
if (gst_base_parse_get_drain (GST_BASE_PARSE (aacparse))) {
return TRUE;
}
@ -408,7 +370,6 @@ gst_aacparse_check_adts_frame (GstAacParse * aacparse,
return TRUE;
}
}
aacparse->sync = FALSE;
return FALSE;
}
@ -484,13 +445,13 @@ gst_aacparse_detect_stream (GstAacParse * aacparse,
aacparse->channels = ((data[2] & 0x01) << 2) | ((data[3] & 0xc0) >> 6);
aacparse->bitrate = ((data[5] & 0x1f) << 6) | ((data[6] & 0xfc) >> 2);
aacparse->frames_per_sec = aacparse->sample_rate / 1024.f;
gst_base_parse_set_frame_props (GST_BASE_PARSE (aacparse),
aacparse->sample_rate, 1024, 50);
GST_DEBUG ("ADTS: samplerate %d, channels %d, bitrate %d, objtype %d, "
"fps %f", aacparse->sample_rate, aacparse->channels,
aacparse->bitrate, aacparse->object_type, aacparse->frames_per_sec);
GST_DEBUG ("ADTS: samplerate %d, channels %d, bitrate %d, objtype %d",
aacparse->sample_rate, aacparse->channels, aacparse->bitrate,
aacparse->object_type);
aacparse->sync = TRUE;
return TRUE;
} else if (need_data) {
/* This tells the parent class not to skip any data */
@ -556,8 +517,8 @@ gst_aacparse_detect_stream (GstAacParse * aacparse,
be based on this */
aacparse->sample_rate = gst_aacparse_get_sample_rate_from_index (sr_idx);
aacparse->frames_per_sec = aacparse->sample_rate / 1024.f;
GST_INFO ("ADIF fps: %f", aacparse->frames_per_sec);
/* baseparse is not given any fps,
* so it will give up on timestamps, seeking, etc */
/* FIXME: Can we assume this? */
aacparse->channels = 2;
@ -568,7 +529,6 @@ gst_aacparse_detect_stream (GstAacParse * aacparse,
gst_base_parse_set_min_frame_size (GST_BASE_PARSE (aacparse), 512);
*framesize = avail;
aacparse->sync = TRUE;
return TRUE;
}
@ -596,14 +556,12 @@ gst_aacparse_check_valid_frame (GstBaseParse * parse,
const guint8 *data;
GstAacParse *aacparse;
gboolean ret = FALSE;
gboolean sync;
aacparse = GST_AACPARSE (parse);
data = GST_BUFFER_DATA (buffer);
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
/* Discontinuous stream -> drop the sync */
aacparse->sync = FALSE;
}
sync = gst_base_parse_get_sync (parse);
if (aacparse->header_type == DSPAAC_HEADER_ADIF ||
aacparse->header_type == DSPAAC_HEADER_NONE) {
@ -611,8 +569,7 @@ gst_aacparse_check_valid_frame (GstBaseParse * parse,
*framesize = GST_BUFFER_SIZE (buffer);
ret = TRUE;
} else if (aacparse->header_type == DSPAAC_HEADER_NOT_PARSED ||
aacparse->sync == FALSE) {
} else if (aacparse->header_type == DSPAAC_HEADER_NOT_PARSED || sync == FALSE) {
ret = gst_aacparse_detect_stream (aacparse, data, GST_BUFFER_SIZE (buffer),
framesize, skipsize);
@ -656,32 +613,6 @@ gst_aacparse_parse_frame (GstBaseParse * parse, GstBuffer * buffer)
aacparse = GST_AACPARSE (parse);
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
gint64 btime;
gboolean r = gst_aacparse_convert (parse, GST_FORMAT_BYTES,
GST_BUFFER_OFFSET (buffer),
GST_FORMAT_TIME, &btime);
if (r) {
/* FIXME: What to do if the conversion fails? */
aacparse->ts = btime;
}
}
/* ADIF: only send an initial 0 timestamp downstream,
* then admit we have no idea and let downstream (decoder) handle it */
if (aacparse->header_type != DSPAAC_HEADER_ADIF || !aacparse->ts) {
GST_BUFFER_DURATION (buffer) = AAC_FRAME_DURATION (aacparse);
GST_BUFFER_TIMESTAMP (buffer) = aacparse->ts;
}
if (GST_CLOCK_TIME_IS_VALID (aacparse->ts))
aacparse->ts += GST_BUFFER_DURATION (buffer);
if (!(++aacparse->framecount % 50)) {
gst_aacparse_update_duration (aacparse);
}
aacparse->bytecount += GST_BUFFER_SIZE (buffer);
if (!aacparse->src_caps_set) {
if (!gst_aacparse_set_src_caps (aacparse,
GST_PAD_CAPS (GST_BASE_PARSE (aacparse)->sinkpad))) {
@ -712,11 +643,6 @@ gst_aacparse_start (GstBaseParse * parse)
aacparse = GST_AACPARSE (parse);
GST_DEBUG ("start");
aacparse->src_caps_set = FALSE;
aacparse->framecount = 0;
aacparse->bytecount = 0;
aacparse->ts = 0;
aacparse->sync = FALSE;
aacparse->eos = FALSE;
gst_base_parse_set_passthrough (parse, FALSE);
return TRUE;
}
@ -737,109 +663,10 @@ gst_aacparse_stop (GstBaseParse * parse)
aacparse = GST_AACPARSE (parse);
GST_DEBUG ("stop");
aacparse->ts = -1;
return TRUE;
}
/**
* gst_aacparse_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_aacparse_event (GstBaseParse * parse, GstEvent * event)
{
GstAacParse *aacparse;
aacparse = GST_AACPARSE (parse);
GST_DEBUG ("event");
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
aacparse->eos = TRUE;
GST_DEBUG ("EOS event");
break;
default:
break;
}
return parent_class->event (parse, event);
}
/**
* gst_aacparse_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_aacparse_convert (GstBaseParse * parse,
GstFormat src_format,
gint64 src_value, GstFormat dest_format, gint64 * dest_value)
{
gboolean ret = FALSE;
GstAacParse *aacparse;
gfloat bpf;
aacparse = GST_AACPARSE (parse);
/* We are not able to do any estimations until some data has been passed */
if (!aacparse->framecount)
return FALSE;
bpf = (gfloat) aacparse->bytecount / aacparse->framecount;
if (src_format == GST_FORMAT_BYTES) {
if (dest_format == GST_FORMAT_TIME) {
/* BYTES -> TIME conversion */
GST_DEBUG ("converting bytes -> time");
if (aacparse->framecount && aacparse->frames_per_sec) {
*dest_value = AAC_FRAME_DURATION (aacparse) * src_value / bpf;
GST_DEBUG ("conversion result: %" G_GINT64_FORMAT " ms",
*dest_value / GST_MSECOND);
ret = TRUE;
}
} else if (dest_format == GST_FORMAT_BYTES) {
/* Parent class may ask us to convert from BYTES to BYTES */
*dest_value = src_value;
ret = TRUE;
}
} else if (src_format == GST_FORMAT_TIME) {
GST_DEBUG ("converting time -> bytes");
if (dest_format == GST_FORMAT_BYTES) {
if (aacparse->framecount && aacparse->frames_per_sec) {
*dest_value = bpf * src_value / AAC_FRAME_DURATION (aacparse);
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 && aacparse->frames_per_sec) {
*dest_value = src_value * AAC_FRAME_DURATION (aacparse);
ret = TRUE;
} else if (dest_format == GST_FORMAT_BYTES) {
}
}
return ret;
}
/**
* gst_aacparse_is_seekable:
* @parse: #GstBaseParse.

8
gst/aacparse/gstaacparse.h
View file

@ -88,18 +88,10 @@ struct _GstAacParse {
gint sample_rate;
gint channels;
gint mpegversion;
gfloat frames_per_sec;
GstAacHeaderType header_type;
guint64 framecount;
guint64 bytecount;
gboolean src_caps_set;
gboolean sync;
gboolean eos;
GstClockTime duration;
GstClockTime ts;
};
/**