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only renegotiate when relavent properties change

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Original commit message from CVS:
only renegotiate when relavent properties change
This commit is contained in:
David I. Lehn 2002-09-21 12:07:43 +00:00
parent 072a9310e7
commit 8e500986d1
2 changed files with 81 additions and 70 deletions
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145
ext/a52dec/gsta52dec.c
View file

@ -136,8 +136,8 @@ gst_a52dec_class_init (GstA52DecClass * klass)
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DRC,
g_param_spec_boolean ("drc", "Dynamic Range Compression",
"Use Dynamic Range Compression", FALSE,
G_PARAM_READWRITE));
"Use Dynamic Range Compression", FALSE,
G_PARAM_READWRITE));
gobject_class->set_property = gst_a52dec_set_property;
gobject_class->get_property = gst_a52dec_get_property;
@ -181,87 +181,87 @@ float_to_int (float *_f, int16_t * s16, int flags)
switch (flags) {
case A52_MONO:
for (i = 0; i < 256; i++) {
s16[5 * i] = s16[5 * i + 1] = s16[5 * i + 2] = s16[5 * i + 3] = 0;
s16[5 * i + 4] = convert (f[i]);
s16[5 * i] = s16[5 * i + 1] = s16[5 * i + 2] = s16[5 * i + 3] = 0;
s16[5 * i + 4] = convert (f[i]);
}
break;
case A52_CHANNEL:
case A52_STEREO:
case A52_DOLBY:
for (i = 0; i < 256; i++) {
s16[2 * i] = convert (f[i]);
s16[2 * i + 1] = convert (f[i + 256]);
s16[2 * i] = convert (f[i]);
s16[2 * i + 1] = convert (f[i + 256]);
}
break;
case A52_3F:
for (i = 0; i < 256; i++) {
s16[5 * i] = convert (f[i]);
s16[5 * i + 1] = convert (f[i + 512]);
s16[5 * i + 2] = s16[5 * i + 3] = 0;
s16[5 * i + 4] = convert (f[i + 256]);
s16[5 * i] = convert (f[i]);
s16[5 * i + 1] = convert (f[i + 512]);
s16[5 * i + 2] = s16[5 * i + 3] = 0;
s16[5 * i + 4] = convert (f[i + 256]);
}
break;
case A52_2F2R:
for (i = 0; i < 256; i++) {
s16[4 * i] = convert (f[i]);
s16[4 * i + 1] = convert (f[i + 256]);
s16[4 * i + 2] = convert (f[i + 512]);
s16[4 * i + 3] = convert (f[i + 768]);
s16[4 * i] = convert (f[i]);
s16[4 * i + 1] = convert (f[i + 256]);
s16[4 * i + 2] = convert (f[i + 512]);
s16[4 * i + 3] = convert (f[i + 768]);
}
break;
case A52_3F2R:
for (i = 0; i < 256; i++) {
s16[5 * i] = convert (f[i]);
s16[5 * i + 1] = convert (f[i + 512]);
s16[5 * i + 2] = convert (f[i + 768]);
s16[5 * i + 3] = convert (f[i + 1024]);
s16[5 * i + 4] = convert (f[i + 256]);
s16[5 * i] = convert (f[i]);
s16[5 * i + 1] = convert (f[i + 512]);
s16[5 * i + 2] = convert (f[i + 768]);
s16[5 * i + 3] = convert (f[i + 1024]);
s16[5 * i + 4] = convert (f[i + 256]);
}
break;
case A52_MONO | A52_LFE:
for (i = 0; i < 256; i++) {
s16[6 * i] = s16[6 * i + 1] = s16[6 * i + 2] = s16[6 * i + 3] = 0;
s16[6 * i + 4] = convert (f[i + 256]);
s16[6 * i + 5] = convert (f[i]);
s16[6 * i] = s16[6 * i + 1] = s16[6 * i + 2] = s16[6 * i + 3] = 0;
s16[6 * i + 4] = convert (f[i + 256]);
s16[6 * i + 5] = convert (f[i]);
}
break;
case A52_CHANNEL | A52_LFE:
case A52_STEREO | A52_LFE:
case A52_DOLBY | A52_LFE:
for (i = 0; i < 256; i++) {
s16[6 * i] = convert (f[i + 256]);
s16[6 * i + 1] = convert (f[i + 512]);
s16[6 * i + 2] = s16[6 * i + 3] = s16[6 * i + 4] = 0;
s16[6 * i + 5] = convert (f[i]);
s16[6 * i] = convert (f[i + 256]);
s16[6 * i + 1] = convert (f[i + 512]);
s16[6 * i + 2] = s16[6 * i + 3] = s16[6 * i + 4] = 0;
s16[6 * i + 5] = convert (f[i]);
}
break;
case A52_3F | A52_LFE:
for (i = 0; i < 256; i++) {
s16[6 * i] = convert (f[i + 256]);
s16[6 * i + 1] = convert (f[i + 768]);
s16[6 * i + 2] = s16[6 * i + 3] = 0;
s16[6 * i + 4] = convert (f[i + 512]);
s16[6 * i + 5] = convert (f[i]);
s16[6 * i] = convert (f[i + 256]);
s16[6 * i + 1] = convert (f[i + 768]);
s16[6 * i + 2] = s16[6 * i + 3] = 0;
s16[6 * i + 4] = convert (f[i + 512]);
s16[6 * i + 5] = convert (f[i]);
}
break;
case A52_2F2R | A52_LFE:
for (i = 0; i < 256; i++) {
s16[6 * i] = convert (f[i + 256]);
s16[6 * i + 1] = convert (f[i + 512]);
s16[6 * i + 2] = convert (f[i + 768]);
s16[6 * i + 3] = convert (f[i + 1024]);
s16[6 * i + 4] = 0;
s16[6 * i + 5] = convert (f[i]);
s16[6 * i] = convert (f[i + 256]);
s16[6 * i + 1] = convert (f[i + 512]);
s16[6 * i + 2] = convert (f[i + 768]);
s16[6 * i + 3] = convert (f[i + 1024]);
s16[6 * i + 4] = 0;
s16[6 * i + 5] = convert (f[i]);
}
break;
case A52_3F2R | A52_LFE:
for (i = 0; i < 256; i++) {
s16[6 * i] = convert (f[i + 256]);
s16[6 * i + 1] = convert (f[i + 768]);
s16[6 * i + 2] = convert (f[i + 1024]);
s16[6 * i + 3] = convert (f[i + 1280]);
s16[6 * i + 4] = convert (f[i + 512]);
s16[6 * i + 5] = convert (f[i]);
s16[6 * i] = convert (f[i + 256]);
s16[6 * i + 1] = convert (f[i + 768]);
s16[6 * i + 2] = convert (f[i + 1024]);
s16[6 * i + 3] = convert (f[i + 1280]);
s16[6 * i + 4] = convert (f[i + 512]);
s16[6 * i + 5] = convert (f[i]);
}
break;
}
@ -341,7 +341,7 @@ gst_a52dec_reneg (GstPad * pad, int channels, int rate)
{
GST_INFO (GST_CAT_PLUGIN_INFO, "a52dec: reneg channels:%d rate:%d\n", channels, rate);
gst_pad_try_set_caps (pad,
if (gst_pad_try_set_caps (pad,
GST_CAPS_NEW ("a52dec_src_caps",
"audio/raw",
"format", GST_PROPS_STRING ("int"),
@ -352,7 +352,9 @@ gst_a52dec_reneg (GstPad * pad, int channels, int rate)
"depth", GST_PROPS_INT (16),
"channels", GST_PROPS_INT (channels),
"rate", GST_PROPS_INT (rate))
);
) <= 0) {
gst_element_error (GST_PAD_PARENT (pad), "could not set caps on source pad, aborting...");
}
}
static void
@ -383,9 +385,10 @@ gst_a52dec_loop (GstElement *element)
GstA52Dec *a52dec;
guint8 *data;
int i, length, flags, sample_rate, bit_rate;
int stream_channels;
int channels;
GstBuffer *buf;
guint32 got_bytes;
gboolean need_reneg;
a52dec = GST_A52DEC (element);
@ -404,26 +407,22 @@ gst_a52dec_loop (GstElement *element)
else
break;
/* FIXME this can potentially be an infinite loop, we have to
* insert a yield operations here */
/* FIXME this can potentially be an infinite loop, we might
* have to insert a yield operation here */
}
/* check if params have changed since last call */
stream_channels = flags & A52_CHANNEL_MASK;
need_reneg = FALSE;
if ((sample_rate != a52dec->sample_rate) ||
(bit_rate != a52dec->bit_rate) ||
(stream_channels != a52dec->stream_channels))
{
if (a52dec->sample_rate != sample_rate) {
need_reneg = TRUE;
a52dec->sample_rate = sample_rate;
a52dec->bit_rate = bit_rate;
a52dec->stream_channels = stream_channels;
/* FIXME force stereo for now */
a52dec->req_channels = A52_STEREO;
gst_a52dec_reneg (a52dec->srcpad,
gst_a52dec_channels (a52dec->req_channels), a52dec->sample_rate);
}
a52dec->stream_channels = flags & A52_CHANNEL_MASK;
/* FIXME: perhaps this change should be announced? */
a52dec->bit_rate = bit_rate;
/* read the header + rest of frame */
got_bytes = gst_bytestream_read (a52dec->bs, &buf, length);
if (got_bytes < length) {
@ -433,7 +432,7 @@ gst_a52dec_loop (GstElement *element)
data = GST_BUFFER_DATA (buf);
/* process */
flags = a52dec->req_channels | A52_ADJUST_LEVEL;
flags = a52dec->request_channels | A52_ADJUST_LEVEL;
a52dec->level = 1;
if (a52_frame (a52dec->state, data, &flags, &a52dec->level, a52dec->bias)) {
@ -441,8 +440,18 @@ gst_a52dec_loop (GstElement *element)
goto end;
}
if ((flags & A52_CHANNEL_MASK) != a52dec->req_channels) {
gst_a52dec_reneg (a52dec->srcpad, gst_a52dec_channels (flags), a52dec->sample_rate);
channels = flags & A52_CHANNEL_MASK;
if (a52dec->using_channels != channels) {
need_reneg = TRUE;
a52dec->using_channels = channels;
}
if (need_reneg == TRUE) {
fprintf (stderr, "a52dec reneg: sample_rate:%d stream_chans:%d using_chans:%d\n",
a52dec->sample_rate, a52dec->stream_channels, a52dec->using_channels);
gst_a52dec_reneg (a52dec->srcpad,
gst_a52dec_channels (a52dec->using_channels), a52dec->sample_rate);
}
if (a52dec->dynamic_range_compression == FALSE) {
@ -455,7 +464,9 @@ gst_a52dec_loop (GstElement *element)
continue;
}
/* push on */
gst_a52dec_push (a52dec->srcpad, a52dec->req_channels, a52dec->samples, GST_BUFFER_TIMESTAMP (buf));
if (gst_a52dec_push (a52dec->srcpad, a52dec->using_channels, a52dec->samples, GST_BUFFER_TIMESTAMP (buf))) {
g_warning ("a52dec push error\n");
}
}
end:
@ -477,8 +488,10 @@ gst_a52dec_change_state (GstElement * element)
a52dec->samples = a52_samples (a52dec->state);
a52dec->bit_rate = -1;
a52dec->sample_rate = -1;
a52dec->stream_channels = -1;
a52dec->req_channels = -1;
a52dec->stream_channels = A52_CHANNEL;
/* FIXME force stereo for now */
a52dec->request_channels = A52_STEREO;
a52dec->using_channels = A52_CHANNEL;
a52dec->level = 1;
a52dec->bias = 384;
break;

6
ext/a52dec/gsta52dec.h
View file

@ -21,7 +21,6 @@
#ifndef __GST_A52DEC_H__
#define __GST_A52DEC_H__
#include <config.h>
#include <gst/gst.h>
#include <gst/bytestream/bytestream.h>
@ -30,7 +29,6 @@
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_A52DEC \
(gst_a52dec_get_type())
#define GST_A52DEC(obj) \
@ -53,7 +51,8 @@ struct _GstA52Dec {
int bit_rate;
int sample_rate;
int stream_channels;
int req_channels;
int request_channels;
int using_channels;
sample_t level;
sample_t bias;
gboolean dynamic_range_compression;
@ -70,5 +69,4 @@ struct _GstA52DecClass {
}
#endif /* __cplusplus */
#endif /* __GST_A52DEC_H__ */