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gst/auparse/gstauparse.*: Rewrite auparse to suck a little bit less: make source pad dynamic, so decodebin/playbin wo...

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Original commit message from CVS:
* gst/auparse/gstauparse.c: (gst_au_parse_base_init),
(gst_au_parse_class_init), (gst_au_parse_init),
(gst_au_parse_reset), (gst_au_parse_add_srcpad),
(gst_au_parse_remove_srcpad), (gst_au_parse_parse_header),
(gst_au_parse_chain), (gst_au_parse_src_convert),
(gst_au_parse_src_query), (gst_au_parse_handle_seek),
(gst_au_parse_sink_event), (gst_au_parse_src_event),
(gst_au_parse_change_state):
* gst/auparse/gstauparse.h:
Rewrite auparse to suck a little bit less: make source pad
dynamic, so decodebin/playbin work with non-raw formats
like alaw/mulaw; add query function for duration/position
queries; check whether we have enough data before attempting
to parse the header (instead of crashing when that is not the
case); work around audioconvert sucking by swapping endianness
to the native endianness ourselves for float formats; send
initial newsegment event. Fixes #161712.
This commit is contained in:
Tim-Philipp Müller 2006-04-26 17:08:24 +00:00
parent cb163be477
commit 5056bb87ab
3 changed files with 598 additions and 266 deletions
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20
ChangeLog
View file

@ -1,3 +1,23 @@
2006-04-26 Tim-Philipp Müller <tim at centricular dot net>
* gst/auparse/gstauparse.c: (gst_au_parse_base_init),
(gst_au_parse_class_init), (gst_au_parse_init),
(gst_au_parse_reset), (gst_au_parse_add_srcpad),
(gst_au_parse_remove_srcpad), (gst_au_parse_parse_header),
(gst_au_parse_chain), (gst_au_parse_src_convert),
(gst_au_parse_src_query), (gst_au_parse_handle_seek),
(gst_au_parse_sink_event), (gst_au_parse_src_event),
(gst_au_parse_change_state):
* gst/auparse/gstauparse.h:
Rewrite auparse to suck a little bit less: make source pad
dynamic, so decodebin/playbin work with non-raw formats
like alaw/mulaw; add query function for duration/position
queries; check whether we have enough data before attempting
to parse the header (instead of crashing when that is not the
case); work around audioconvert sucking by swapping endianness
to the native endianness ourselves for float formats; send
initial newsegment event. Fixes #161712.
2006-04-26 Zaheer Abbas Merali <zaheerabbas at merali dot org>
* sys/osxaudio/Makefile.am:

808
gst/auparse/gstauparse.c
View file

@ -1,5 +1,6 @@
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2006> Tim-Philipp Müller <tim centricular net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -16,10 +17,16 @@
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* Element-Checklist-Version: 5 */
/* 2001/04/03 - Updated parseau to use caps nego
* Zaheer Abbas Merali <zaheerabbas at merali dot org>
/**
* SECTION:element-auparse
* @short_description: .au file parser
*
* <refsect2>
* <para>
* Parses .au files.
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
@ -32,15 +39,16 @@
#include "gstauparse.h"
#include <gst/audio/audio.h>
/* elementfactory information */
GST_DEBUG_CATEGORY_STATIC (auparse_debug);
#define GST_CAT_DEFAULT (auparse_debug)
static const GstElementDetails gst_au_parse_details =
GST_ELEMENT_DETAILS ("AU audio demuxer",
"Codec/Demuxer/Audio",
"Parse an .au file into raw audio",
"Erik Walthinsen <omega@cse.ogi.edu>");
static GstStaticPadTemplate gst_au_parse_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-au")
@ -61,8 +69,7 @@ GST_STATIC_PAD_TEMPLATE ("sink",
"audio/x-adpcm, " \
"layout = (string) { g721, g722, g723_3, g723_5 }"
static GstStaticPadTemplate gst_au_parse_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS (GST_AUDIO_INT_PAD_TEMPLATE_CAPS "; "
@ -76,19 +83,27 @@ static void gst_au_parse_dispose (GObject * object);
static GstFlowReturn gst_au_parse_chain (GstPad * pad, GstBuffer * buf);
static GstStateChangeReturn gst_au_parse_change_state (GstElement * element,
GstStateChange transition);
static void gst_au_parse_reset (GstAuParse * auparse);
static gboolean gst_au_parse_remove_srcpad (GstAuParse * auparse);
static gboolean gst_au_parse_add_srcpad (GstAuParse * auparse, GstCaps * caps);
static gboolean gst_au_parse_src_query (GstPad * pad, GstQuery * query);
static gboolean gst_au_parse_src_event (GstPad * pad, GstEvent * event);
static gboolean gst_au_parse_sink_event (GstPad * pad, GstEvent * event);
GST_BOILERPLATE (GstAuParse, gst_au_parse, GstElement, GST_TYPE_ELEMENT)
GST_BOILERPLATE (GstAuParse, gst_au_parse, GstElement, GST_TYPE_ELEMENT);
static void gst_au_parse_base_init (gpointer g_class)
static void
gst_au_parse_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_au_parse_sink_template));
gst_static_pad_template_get (&sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_au_parse_src_template));
gst_static_pad_template_get (&src_template));
gst_element_class_set_details (element_class, &gst_au_parse_details);
GST_DEBUG_CATEGORY_INIT (auparse_debug, "auparse", 0, ".au parser");
}
static void
@ -100,8 +115,6 @@ gst_au_parse_class_init (GstAuParseClass * klass)
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->dispose = gst_au_parse_dispose;
gstelement_class->change_state =
@ -111,23 +124,16 @@ gst_au_parse_class_init (GstAuParseClass * klass)
static void
gst_au_parse_init (GstAuParse * auparse, GstAuParseClass * klass)
{
auparse->sinkpad =
gst_pad_new_from_static_template (&gst_au_parse_sink_template, "sink");
gst_pad_set_chain_function (auparse->sinkpad, gst_au_parse_chain);
auparse->sinkpad = gst_pad_new_from_static_template (&sink_template, "sink");
gst_pad_set_chain_function (auparse->sinkpad,
GST_DEBUG_FUNCPTR (gst_au_parse_chain));
gst_pad_set_event_function (auparse->sinkpad,
GST_DEBUG_FUNCPTR (gst_au_parse_sink_event));
gst_element_add_pad (GST_ELEMENT (auparse), auparse->sinkpad);
auparse->srcpad =
gst_pad_new_from_static_template (&gst_au_parse_src_template, "src");
gst_pad_use_fixed_caps (auparse->srcpad);
gst_element_add_pad (GST_ELEMENT (auparse), auparse->srcpad);
auparse->offset = 0;
auparse->buffer_offset = 0;
auparse->srcpad = NULL;
auparse->adapter = gst_adapter_new ();
auparse->size = 0;
auparse->encoding = 0;
auparse->frequency = 0;
auparse->channels = 0;
gst_au_parse_reset (auparse);
}
static void
@ -142,260 +148,564 @@ gst_au_parse_dispose (GObject * object)
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static GstFlowReturn
gst_au_parse_chain (GstPad * pad, GstBuffer * buf)
static void
gst_au_parse_reset (GstAuParse * auparse)
{
GstFlowReturn ret;
GstAuParse *auparse;
guchar *data;
glong size;
GstCaps *tempcaps;
gint law = 0, depth = 0, ieee = 0;
gchar layout[7];
GstBuffer *databuf;
gst_au_parse_remove_srcpad (auparse);
layout[0] = 0;
auparse->offset = 0;
auparse->buffer_offset = 0;
auparse->encoding = 0;
auparse->samplerate = 0;
auparse->channels = 0;
auparse->float_swap = 0;
auparse = GST_AU_PARSE (gst_pad_get_parent (pad));
gst_adapter_clear (auparse->adapter);
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
/* gst_segment_init (&auparse->segment, GST_FORMAT_TIME); */
}
GST_DEBUG_OBJECT (auparse, "got buffer of size %ld", size);
static gboolean
gst_au_parse_add_srcpad (GstAuParse * auparse, GstCaps * new_caps)
{
GstPad *srcpad = NULL;
/* if we haven't seen any data yet... */
if (auparse->size == 0) {
guint32 *head = (guint32 *) data;
if (auparse->src_caps && gst_caps_is_equal (new_caps, auparse->src_caps)) {
GST_LOG_OBJECT (auparse, "same caps, nothing to do");
return TRUE;
}
/* FIXME, check if we have enough data (with adapter?) instead of
* crashing. */
/* normal format is big endian (au is a Sparc format) */
if (GST_READ_UINT32_BE (head) == 0x2e736e64) { /* ".snd" */
head++;
auparse->le = 0;
auparse->offset = GST_READ_UINT32_BE (head);
head++;
/* Do not trust size, could be set to -1 : unknown */
auparse->size = GST_READ_UINT32_BE (head);
head++;
auparse->encoding = GST_READ_UINT32_BE (head);
head++;
auparse->frequency = GST_READ_UINT32_BE (head);
head++;
auparse->channels = GST_READ_UINT32_BE (head);
head++;
gst_caps_replace (&auparse->src_caps, new_caps);
if (auparse->srcpad != NULL) {
GST_DEBUG_OBJECT (auparse, "Changing src pad caps to %" GST_PTR_FORMAT,
auparse->src_caps);
gst_pad_set_caps (auparse->srcpad, auparse->src_caps);
}
/* and of course, someone had to invent a little endian
* version. Used by DEC systems. */
} else if (GST_READ_UINT32_LE (head) == 0x0064732E) { /* other source say it is "dns." */
head++;
auparse->le = 1;
auparse->offset = GST_READ_UINT32_LE (head);
head++;
/* Do not trust size, could be set to -1 : unknown */
auparse->size = GST_READ_UINT32_LE (head);
head++;
auparse->encoding = GST_READ_UINT32_LE (head);
head++;
auparse->frequency = GST_READ_UINT32_LE (head);
head++;
auparse->channels = GST_READ_UINT32_LE (head);
head++;
} else {
goto unknown_header;
}
GST_DEBUG
("offset %ld, size %ld, encoding %ld, frequency %ld, channels %ld\n",
auparse->offset, auparse->size, auparse->encoding, auparse->frequency,
auparse->channels);
/*
Docs :
http://www.opengroup.org/public/pubs/external/auformat.html
http://astronomy.swin.edu.au/~pbourke/dataformats/au/
Solaris headers : /usr/include/audio/au.h
libsndfile : src/au.c
Samples :
http://www.tsp.ece.mcgill.ca/MMSP/Documents/AudioFormats/AU/Samples.html
*/
switch (auparse->encoding) {
case 1: /* 8-bit ISDN mu-law G.711 */
law = 1;
depth = 8;
break;
case 27: /* 8-bit ISDN A-law G.711 */
law = 2;
depth = 8;
break;
case 2: /* 8-bit linear PCM */
depth = 8;
break;
case 3: /* 16-bit linear PCM */
depth = 16;
break;
case 4: /* 24-bit linear PCM */
depth = 24;
break;
case 5: /* 32-bit linear PCM */
depth = 32;
break;
case 6: /* 32-bit IEEE floating point */
ieee = 1;
depth = 32;
break;
case 7: /* 64-bit IEEE floating point */
ieee = 1;
depth = 64;
break;
case 23: /* 4-bit CCITT G.721 ADPCM 32kbps -> modplug/libsndfile (compressed 8-bit mu-law) */
strcpy (layout, "g721");
break;
case 24: /* 8-bit CCITT G.722 ADPCM -> rtp */
strcpy (layout, "g722");
break;
case 25: /* 3-bit CCITT G.723.3 ADPCM 24kbps -> rtp/xine/modplug/libsndfile */
strcpy (layout, "g723_3");
break;
case 26: /* 5-bit CCITT G.723.5 ADPCM 40kbps -> rtp/xine/modplug/libsndfile */
strcpy (layout, "g723_5");
break;
case 8: /* Fragmented sample data */
case 9: /* AU_ENCODING_NESTED */
case 10: /* DSP program */
case 11: /* DSP 8-bit fixed point */
case 12: /* DSP 16-bit fixed point */
case 13: /* DSP 24-bit fixed point */
case 14: /* DSP 32-bit fixed point */
case 16: /* AU_ENCODING_DISPLAY : non-audio display data */
case 17: /* AU_ENCODING_MULAW_SQUELCH */
case 18: /* 16-bit linear with emphasis */
case 19: /* 16-bit linear compressed (NeXT) */
case 20: /* 16-bit linear with emphasis and compression */
case 21: /* Music kit DSP commands */
case 22: /* Music kit DSP commands samples */
default:
goto unknown_format;
}
if (law) {
tempcaps =
gst_caps_new_simple ((law == 1) ? "audio/x-mulaw" : "audio/x-alaw",
"rate", G_TYPE_INT, auparse->frequency,
"channels", G_TYPE_INT, auparse->channels, NULL);
auparse->sample_size = auparse->channels;
} else if (ieee) {
tempcaps = gst_caps_new_simple ("audio/x-raw-float",
"rate", G_TYPE_INT, auparse->frequency,
"channels", G_TYPE_INT, auparse->channels,
"endianness", G_TYPE_INT,
auparse->le ? G_LITTLE_ENDIAN : G_BIG_ENDIAN,
"width", G_TYPE_INT, depth, NULL);
auparse->sample_size = auparse->channels * depth / 8;
} else if (layout[0]) {
tempcaps = gst_caps_new_simple ("audio/x-adpcm",
"layout", G_TYPE_STRING, layout, NULL);
auparse->sample_size = 0;
} else {
tempcaps = gst_caps_new_simple ("audio/x-raw-int",
"rate", G_TYPE_INT, auparse->frequency,
"channels", G_TYPE_INT, auparse->channels,
"endianness", G_TYPE_INT,
auparse->le ? G_LITTLE_ENDIAN : G_BIG_ENDIAN, "depth", G_TYPE_INT,
depth, "width", G_TYPE_INT, depth, "signed", G_TYPE_BOOLEAN, TRUE,
NULL);
auparse->sample_size = auparse->channels * depth / 8;
}
gst_pad_set_caps (auparse->srcpad, tempcaps);
if (auparse->srcpad == NULL) {
srcpad = auparse->srcpad =
gst_pad_new_from_static_template (&src_template, "src");
g_return_val_if_fail (auparse->srcpad != NULL, FALSE);
#if 0
{
GstEvent *event;
event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_DEFAULT,
0, GST_CLOCK_TIME_NONE, 0);
gst_pad_push_event (auparse->srcpad, event);
}
gst_pad_set_query_type_function (auparse->srcpad,
GST_DEBUG_FUNCPTR (gst_au_parse_src_get_query_types));
#endif
gst_pad_set_query_function (auparse->srcpad,
GST_DEBUG_FUNCPTR (gst_au_parse_src_query));
gst_pad_set_event_function (auparse->srcpad,
GST_DEBUG_FUNCPTR (gst_au_parse_src_event));
databuf = gst_buffer_create_sub (buf, auparse->offset,
size - auparse->offset);
gst_pad_use_fixed_caps (auparse->srcpad);
gst_buffer_unref (buf);
buf = NULL;
} else {
databuf = buf;
buf = NULL;
if (auparse->src_caps)
gst_pad_set_caps (auparse->srcpad, auparse->src_caps);
GST_DEBUG_OBJECT (auparse, "Adding src pad with caps %" GST_PTR_FORMAT,
auparse->src_caps);
gst_object_ref (auparse->srcpad);
if (!gst_element_add_pad (GST_ELEMENT (auparse), auparse->srcpad))
return FALSE;
gst_element_no_more_pads (GST_ELEMENT (auparse));
}
if (auparse->sample_size) {
int avail;
return TRUE;
}
gst_adapter_push (auparse->adapter, databuf);
static gboolean
gst_au_parse_remove_srcpad (GstAuParse * auparse)
{
gboolean res = TRUE;
/* Ensure we push a buffer that's a multiple of the frame size downstream */
avail = gst_adapter_available (auparse->adapter);
avail -= avail % auparse->sample_size;
if (auparse->srcpad != NULL) {
GST_DEBUG_OBJECT (auparse, "Removing src pad");
res = gst_element_remove_pad (GST_ELEMENT (auparse), auparse->srcpad);
g_return_val_if_fail (res != FALSE, FALSE);
gst_object_unref (auparse->srcpad);
auparse->srcpad = NULL;
}
if (avail > 0) {
const guint8 *data = gst_adapter_peek (auparse->adapter, avail);
GstBuffer *newbuf;
return res;
}
if ((ret =
gst_pad_alloc_buffer_and_set_caps (auparse->srcpad,
auparse->buffer_offset, avail, GST_PAD_CAPS (auparse->srcpad),
&newbuf)) == GST_FLOW_OK) {
static GstFlowReturn
gst_au_parse_parse_header (GstAuParse * auparse)
{
GstCaps *tempcaps;
guint32 size;
guint8 *head;
gchar layout[7] = { 0, };
gint law = 0, depth = 0, ieee = 0;
memcpy (GST_BUFFER_DATA (newbuf), data, avail);
gst_adapter_flush (auparse->adapter, avail);
head = (guint8 *) gst_adapter_peek (auparse->adapter, 24);
g_assert (head != NULL);
auparse->buffer_offset += avail;
GST_DEBUG_OBJECT (auparse, "[%c%c%c%c]", head[0], head[1], head[2], head[3]);
ret = gst_pad_push (auparse->srcpad, newbuf);
}
} else {
ret = GST_FLOW_OK;
switch (GST_READ_UINT32_BE (head)) {
/* normal format is big endian (au is a Sparc format) */
case 0x2e736e64:{ /* ".snd" */
auparse->endianness = G_BIG_ENDIAN;
break;
}
/* and of course, someone had to invent a little endian
* version. Used by DEC systems. */
case 0x646e732e: /* dns. */
case 0x0064732e:{ /* other source say it is "dns." */
auparse->endianness = G_LITTLE_ENDIAN;
break;
}
default:{
goto unknown_header;
}
} else {
/* It's something non-trivial (such as ADPCM), we don't understand it, so
* just push downstream and assume this will know what to do with it */
gst_buffer_set_caps (databuf, GST_PAD_CAPS (auparse->srcpad));
ret = gst_pad_push (auparse->srcpad, databuf);
}
gst_object_unref (auparse);
auparse->offset = GST_READ_UINT32_BE (head + 4);
/* Do not trust size, could be set to -1 : unknown */
size = GST_READ_UINT32_BE (head + 8);
auparse->encoding = GST_READ_UINT32_BE (head + 12);
auparse->samplerate = GST_READ_UINT32_BE (head + 16);
auparse->channels = GST_READ_UINT32_BE (head + 20);
return ret;
GST_DEBUG_OBJECT (auparse, "offset %ld, size %u, encoding %u, "
"frequency %u, channels %u", auparse->offset, size,
auparse->encoding, auparse->samplerate, auparse->channels);
/* Docs:
* http://www.opengroup.org/public/pubs/external/auformat.html
* http://astronomy.swin.edu.au/~pbourke/dataformats/au/
* Solaris headers : /usr/include/audio/au.h
* libsndfile : src/au.c
*
* Samples :
* http://www.tsp.ece.mcgill.ca/MMSP/Documents/AudioFormats/AU/Samples.html
*/
auparse->float_swap = 0;
switch (auparse->encoding) {
case 1: /* 8-bit ISDN mu-law G.711 */
law = 1;
depth = 8;
break;
case 27: /* 8-bit ISDN A-law G.711 */
law = 2;
depth = 8;
break;
case 2: /* 8-bit linear PCM */
depth = 8;
break;
case 3: /* 16-bit linear PCM */
depth = 16;
break;
case 4: /* 24-bit linear PCM */
depth = 24;
break;
case 5: /* 32-bit linear PCM */
depth = 32;
break;
case 6: /* 32-bit IEEE floating point */
ieee = 1;
depth = 32;
break;
case 7: /* 64-bit IEEE floating point */
ieee = 1;
depth = 64;
break;
case 23: /* 4-bit CCITT G.721 ADPCM 32kbps -> modplug/libsndfile (compressed 8-bit mu-law) */
strcpy (layout, "g721");
break;
case 24: /* 8-bit CCITT G.722 ADPCM -> rtp */
strcpy (layout, "g722");
break;
case 25: /* 3-bit CCITT G.723.3 ADPCM 24kbps -> rtp/xine/modplug/libsndfile */
strcpy (layout, "g723_3");
break;
case 26: /* 5-bit CCITT G.723.5 ADPCM 40kbps -> rtp/xine/modplug/libsndfile */
strcpy (layout, "g723_5");
break;
case 8: /* Fragmented sample data */
case 9: /* AU_ENCODING_NESTED */
case 10: /* DSP program */
case 11: /* DSP 8-bit fixed point */
case 12: /* DSP 16-bit fixed point */
case 13: /* DSP 24-bit fixed point */
case 14: /* DSP 32-bit fixed point */
case 16: /* AU_ENCODING_DISPLAY : non-audio display data */
case 17: /* AU_ENCODING_MULAW_SQUELCH */
case 18: /* 16-bit linear with emphasis */
case 19: /* 16-bit linear compressed (NeXT) */
case 20: /* 16-bit linear with emphasis and compression */
case 21: /* Music kit DSP commands */
case 22: /* Music kit DSP commands samples */
default:
goto unknown_format;
}
if (law) {
tempcaps =
gst_caps_new_simple ((law == 1) ? "audio/x-mulaw" : "audio/x-alaw",
"rate", G_TYPE_INT, auparse->samplerate,
"channels", G_TYPE_INT, auparse->channels, NULL);
auparse->sample_size = auparse->channels;
} else if (ieee) {
tempcaps = gst_caps_new_simple ("audio/x-raw-float",
"rate", G_TYPE_INT, auparse->samplerate,
"channels", G_TYPE_INT, auparse->channels,
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"width", G_TYPE_INT, depth, NULL);
auparse->sample_size = auparse->channels * depth / 8;
if (auparse->endianness != G_BYTE_ORDER) {
GST_DEBUG_OBJECT (auparse, "need to swap float byte order ourselves!");
auparse->float_swap = depth;
}
} else if (layout[0]) {
tempcaps = gst_caps_new_simple ("audio/x-adpcm",
"layout", G_TYPE_STRING, layout, NULL);
auparse->sample_size = 0;
} else {
tempcaps = gst_caps_new_simple ("audio/x-raw-int",
"rate", G_TYPE_INT, auparse->samplerate,
"channels", G_TYPE_INT, auparse->channels,
"endianness", G_TYPE_INT, auparse->endianness,
"depth", G_TYPE_INT, depth, "width", G_TYPE_INT, depth,
/* FIXME: signed TRUE even for 8-bit PCM? */
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
auparse->sample_size = auparse->channels * depth / 8;
}
GST_DEBUG_OBJECT (auparse, "sample_size=%d", auparse->sample_size);
if (!gst_au_parse_add_srcpad (auparse, tempcaps))
goto add_pad_failed;
GST_DEBUG_OBJECT (auparse, "offset=%ld", auparse->offset);
gst_adapter_flush (auparse->adapter, auparse->offset);
gst_caps_unref (tempcaps);
return GST_FLOW_OK;
/* ERRORS */
unknown_header:
{
GST_ELEMENT_ERROR (auparse, STREAM, WRONG_TYPE, (NULL), (NULL));
gst_buffer_unref (buf);
gst_object_unref (auparse);
return GST_FLOW_ERROR;
}
unknown_format:
{
GST_ELEMENT_ERROR (auparse, STREAM, FORMAT, (NULL), (NULL));
gst_buffer_unref (buf);
gst_object_unref (auparse);
return GST_FLOW_ERROR;
}
add_pad_failed:
{
GST_ELEMENT_ERROR (auparse, STREAM, FAILED, (NULL),
("Failed to add srcpad"));
gst_caps_unref (tempcaps);
return GST_FLOW_ERROR;
}
}
#define AU_HEADER_SIZE 24
static GstFlowReturn
gst_au_parse_chain (GstPad * pad, GstBuffer * buf)
{
GstFlowReturn ret = GST_FLOW_OK;
GstAuParse *auparse;
gint avail, sendnow = 0;
auparse = GST_AU_PARSE (gst_pad_get_parent (pad));
GST_LOG_OBJECT (auparse, "got buffer of size %u", GST_BUFFER_SIZE (buf));
gst_adapter_push (auparse->adapter, buf);
buf = NULL;
/* if we haven't seen any data yet... */
if (auparse->srcpad == NULL) {
if (gst_adapter_available (auparse->adapter) < AU_HEADER_SIZE) {
GST_DEBUG_OBJECT (auparse, "need more data to parse header");
ret = GST_FLOW_OK;
goto out;
}
ret = gst_au_parse_parse_header (auparse);
if (ret != GST_FLOW_OK)
goto out;
gst_pad_push_event (auparse->srcpad,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_DEFAULT,
0, GST_CLOCK_TIME_NONE, 0));
}
avail = gst_adapter_available (auparse->adapter);
if (auparse->sample_size > 0) {
/* Ensure we push a buffer that's a multiple of the frame size downstream */
sendnow = avail - (avail % auparse->sample_size);
} else {
/* It's something non-trivial (such as ADPCM), we don't understand it, so
* just push downstream and assume it will know what to do with it */
sendnow = avail;
}
if (sendnow > 0) {
GstBuffer *outbuf;
const guint8 *data;
ret = gst_pad_alloc_buffer_and_set_caps (auparse->srcpad,
auparse->buffer_offset, sendnow, GST_PAD_CAPS (auparse->srcpad),
&outbuf);
if (ret != GST_FLOW_OK) {
GST_DEBUG_OBJECT (auparse, "pad alloc flow: %s", gst_flow_get_name (ret));
goto out;
}
data = gst_adapter_peek (auparse->adapter, sendnow);
/* audioconvert only handles floats in native endianness ... */
switch (auparse->float_swap) {
case 32:{
guint32 *indata = (guint32 *) data;
guint32 *outdata = (guint32 *) GST_BUFFER_DATA (outbuf);
gint i;
for (i = 0; i < (sendnow / sizeof (guint32)); ++i) {
outdata[i] = GUINT32_SWAP_LE_BE (indata[i]);
}
break;
}
case 64:{
guint64 *indata = (guint64 *) data;
guint64 *outdata = (guint64 *) GST_BUFFER_DATA (outbuf);
gint i;
for (i = 0; i < (sendnow / sizeof (guint64)); ++i) {
outdata[i] = GUINT64_SWAP_LE_BE (indata[i]);
}
break;
}
default:{
memcpy (GST_BUFFER_DATA (outbuf), data, sendnow);
break;
}
}
gst_adapter_flush (auparse->adapter, sendnow);
auparse->buffer_offset += sendnow;
ret = gst_pad_push (auparse->srcpad, outbuf);
}
out:
gst_object_unref (auparse);
return ret;
}
static gboolean
gst_au_parse_src_convert (GstAuParse * auparse, GstFormat src_format,
gint64 srcval, GstFormat dest_format, gint64 * destval)
{
gboolean ret = TRUE;
gint64 offset;
guint samplesize, rate;
if (dest_format == src_format) {
*destval = srcval;
return TRUE;
}
GST_OBJECT_LOCK (auparse);
samplesize = auparse->sample_size;
offset = auparse->offset;
rate = auparse->samplerate;
GST_OBJECT_UNLOCK (auparse);
if (samplesize == 0 || rate == 0) {
GST_LOG_OBJECT (auparse, "cannot convert, sample_size or rate unknown");
return FALSE;
}
switch (src_format) {
case GST_FORMAT_BYTES:
srcval /= samplesize;
/* fallthrough */
case GST_FORMAT_DEFAULT:{
switch (dest_format) {
case GST_FORMAT_BYTES:
*destval = srcval * samplesize;
break;
case GST_FORMAT_TIME:
*destval = gst_util_uint64_scale_int (srcval, GST_SECOND, rate);
break;
default:
ret = FALSE;
break;
}
break;
}
case GST_FORMAT_TIME:{
switch (dest_format) {
case GST_FORMAT_BYTES:
*destval =
gst_util_uint64_scale_int (srcval, rate * samplesize, GST_SECOND);
break;
case GST_FORMAT_DEFAULT:
*destval = gst_util_uint64_scale_int (srcval, rate, GST_SECOND);
break;
default:
ret = FALSE;
break;
}
break;
}
default:{
ret = FALSE;
break;
}
}
if (!ret) {
GST_DEBUG_OBJECT (auparse, "could not convert from %s to %s format",
gst_format_get_name (src_format), gst_format_get_name (dest_format));
}
return ret;
}
static gboolean
gst_au_parse_src_query (GstPad * pad, GstQuery * query)
{
GstAuParse *auparse;
gboolean ret = FALSE;
auparse = GST_AU_PARSE (gst_pad_get_parent (pad));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_DURATION:{
GstFormat bformat = GST_FORMAT_BYTES;
GstFormat format;
gint64 len, val;
gst_query_parse_duration (query, &format, NULL);
if (!gst_pad_query_peer_duration (auparse->sinkpad, &bformat, &len)) {
GST_DEBUG_OBJECT (auparse, "failed to query upstream length");
break;
}
GST_OBJECT_LOCK (auparse);
len -= auparse->offset;
GST_OBJECT_UNLOCK (auparse);
ret = gst_au_parse_src_convert (auparse, GST_FORMAT_BYTES, len,
format, &val);
if (ret) {
gst_query_set_duration (query, format, val);
}
break;
}
case GST_QUERY_POSITION:{
GstFormat bformat = GST_FORMAT_BYTES;
GstFormat format;
gint64 pos, val;
gst_query_parse_position (query, &format, NULL);
if (!gst_pad_query_peer_position (auparse->sinkpad, &bformat, &pos)) {
GST_DEBUG_OBJECT (auparse, "failed to query upstream position");
break;
}
GST_OBJECT_LOCK (auparse);
pos -= auparse->offset;
GST_OBJECT_UNLOCK (auparse);
ret = gst_au_parse_src_convert (auparse, GST_FORMAT_BYTES, pos,
format, &val);
if (ret) {
gst_query_set_position (query, format, val);
}
break;
}
default:
ret = gst_pad_query_default (pad, query);
break;
}
gst_object_unref (auparse);
return ret;
}
static gboolean
gst_au_parse_handle_seek (GstAuParse * auparse, GstEvent * event)
{
GstSeekType start_type, stop_type;
GstSeekFlags flags;
GstFormat format;
gdouble rate;
gint64 start, stop;
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
&stop_type, &stop);
if (format != GST_FORMAT_TIME) {
GST_DEBUG_OBJECT (auparse, "only support seeks in TIME format");
return FALSE;
}
/* FIXME: implement seeking */
return FALSE;
}
static gboolean
gst_au_parse_sink_event (GstPad * pad, GstEvent * event)
{
GstAuParse *auparse;
gboolean ret;
auparse = GST_AU_PARSE (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
default:
ret = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (auparse);
return ret;
}
static gboolean
gst_au_parse_src_event (GstPad * pad, GstEvent * event)
{
GstAuParse *auparse;
gboolean ret;
auparse = GST_AU_PARSE (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
ret = gst_au_parse_handle_seek (auparse, event);
break;
default:
ret = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (auparse);
return ret;
}
static GstStateChangeReturn
@ -409,14 +719,8 @@ gst_au_parse_change_state (GstElement * element, GstStateChange transition)
return ret;
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
gst_adapter_clear (auparse->adapter);
auparse->buffer_offset = 0;
auparse->offset = 0;
auparse->size = 0;
auparse->encoding = 0;
auparse->frequency = 0;
auparse->channels = 0;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_au_parse_reset (auparse);
default:
break;
}

36
gst/auparse/gstauparse.h
View file

@ -1,5 +1,6 @@
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2006> Tim-Philipp Müller <tim centricular net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -18,8 +19,8 @@
*/
#ifndef __GST_AUPARSE_H__
#define __GST_AUPARSE_H__
#ifndef __GST_AU_PARSE_H__
#define __GST_AU_PARSE_H__
#include <gst/gst.h>
@ -33,10 +34,10 @@ G_BEGIN_DECLS
#define GST_AU_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AU_PARSE,GstAuParse))
#define GST_AU_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AU_PARSE,GstAuParse))
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_AU_PARSE,GstAuParseClass))
#define GST_IS_AU_PARSE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AU_PARSE))
#define GST_IS_AU_PARSE_CLASS(obj) \
#define GST_IS_AU_PARSE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AU_PARSE))
typedef struct _GstAuParse GstAuParse;
@ -45,19 +46,26 @@ typedef struct _GstAuParseClass GstAuParseClass;
struct _GstAuParse {
GstElement element;
GstPad *sinkpad,*srcpad;
GstPad *sinkpad;
GstPad *srcpad;
guchar le;
glong offset;
glong buffer_offset;
gint sample_size;
glong size;
glong encoding;
glong frequency;
glong channels;
GstCaps *src_caps;
GstAdapter *adapter;
/* GstSegment segment; */
gint64 offset; /* where sample data starts */
gint64 buffer_offset;
guint sample_size;
guint encoding;
guint samplerate;
guint endianness;
guint channels;
/* audioconvert only handles float in native endianness,
* so we need to swap endianness here ourselves for now */
guint float_swap; /* 0, 32 or 64 */
};
struct _GstAuParseClass {
@ -68,4 +76,4 @@ GType gst_au_parse_get_type (void);
G_END_DECLS
#endif /* __GST_AUPARSE_H__ */
#endif /* __GST_AU_PARSE_H__ */