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gst/wavparse/gstwavparse.*: Add push (streaming) mode to wavparse (fixes #337625)

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Original commit message from CVS:
* gst/wavparse/gstwavparse.c: (gst_wavparse_base_init),
(gst_wavparse_class_init), (gst_wavparse_dispose),
(gst_wavparse_reset), (gst_wavparse_init),
(gst_wavparse_create_sourcepad), (gst_wavparse_parse_adtl),
(gst_wavparse_parse_cues), (gst_wavparse_parse_file_header),
(gst_wavparse_stream_init), (gst_wavparse_perform_seek),
(gst_wavparse_peek_chunk_info), (gst_wavparse_peek_chunk),
(gst_wavparse_stream_headers), (gst_wavparse_parse_stream_init),
(gst_wavparse_send_event), (gst_wavparse_add_src_pad),
(gst_wavparse_stream_data), (gst_wavparse_loop),
(gst_wavparse_chain), (gst_wavparse_srcpad_event),
(gst_wavparse_sink_activate), (gst_wavparse_sink_activate_pull),
(gst_wavparse_change_state), (plugin_init):
* gst/wavparse/gstwavparse.h:
Add push (streaming) mode to wavparse (fixes #337625)
This commit is contained in:
Stefan Kost 2006-04-28 23:09:17 +00:00
parent 9d82e86c0c
commit 16b28a8eea
3 changed files with 462 additions and 160 deletions
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18
ChangeLog
View file

@ -1,3 +1,21 @@
2006-04-29 Stefan Kost <ensonic@users.sf.net>
* gst/wavparse/gstwavparse.c: (gst_wavparse_base_init),
(gst_wavparse_class_init), (gst_wavparse_dispose),
(gst_wavparse_reset), (gst_wavparse_init),
(gst_wavparse_create_sourcepad), (gst_wavparse_parse_adtl),
(gst_wavparse_parse_cues), (gst_wavparse_parse_file_header),
(gst_wavparse_stream_init), (gst_wavparse_perform_seek),
(gst_wavparse_peek_chunk_info), (gst_wavparse_peek_chunk),
(gst_wavparse_stream_headers), (gst_wavparse_parse_stream_init),
(gst_wavparse_send_event), (gst_wavparse_add_src_pad),
(gst_wavparse_stream_data), (gst_wavparse_loop),
(gst_wavparse_chain), (gst_wavparse_srcpad_event),
(gst_wavparse_sink_activate), (gst_wavparse_sink_activate_pull),
(gst_wavparse_change_state), (plugin_init):
* gst/wavparse/gstwavparse.h:
Add push (streaming) mode to wavparse (fixes #337625)
2006-04-28 Thomas Vander Stichele <thomas at apestaart dot org>
* configure.ac:

594
gst/wavparse/gstwavparse.c
View file

@ -1,6 +1,7 @@
/* -*- Mode: C; tab-width: 2; indent-tabs-mode: t; c-basic-offset: 2 -*- */
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2006> Nokia Corporation, Stefan Kost <stefan.kost@nokia.com>.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -31,11 +32,18 @@
* <title>Example launch line</title>
* <para>
* <programlisting>
* gst-launch filesrc sine.wav ! wavparse ! audioconvert ! alsasink
* gst-launch filesrc location=sine.wav ! wavparse ! audioconvert ! alsasink
* </programlisting>
* Read a wav file and output to the soundcard using the ALSA element. The
* wav file is assumed to contain raw uncompressed samples.
* </para>
* <para>
* <programlisting>
* gst-launch gnomevfssrc location=http://www.example.org/sine.wav ! queue ! wavparse ! audioconvert ! alsasink
* </programlisting>
* Stream data from
* </para>
*
* </refsect2>
*
* Last reviewed on 2006-03-03 (0.10.3)
@ -51,18 +59,24 @@
#include "gst/riff/riff-media.h"
#include <gst/gst-i18n-plugin.h>
#ifndef G_MAXUINT32
#define G_MAXUINT32 0xffffffff
#endif
GST_DEBUG_CATEGORY_STATIC (wavparse_debug);
#define GST_CAT_DEFAULT (wavparse_debug)
static void gst_wavparse_base_init (gpointer g_class);
static void gst_wavparse_class_init (GstWavParseClass * klass);
static void gst_wavparse_init (GstWavParse * wavparse);
static void gst_wavparse_dispose (GObject * object);
static gboolean gst_wavparse_sink_activate (GstPad * sinkpad);
static gboolean gst_wavparse_sink_activate_pull (GstPad * sinkpad,
gboolean active);
static gboolean gst_wavparse_send_event (GstElement * element,
GstEvent * event);
static GstFlowReturn gst_wavparse_chain (GstPad * pad, GstBuffer * buf);
static GstStateChangeReturn gst_wavparse_change_state (GstElement * element,
GstStateChange transition);
@ -77,6 +91,12 @@ static gboolean gst_wavparse_srcpad_event (GstPad * pad, GstEvent * event);
static void gst_wavparse_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static const GstElementDetails gst_wavparse_details =
GST_ELEMENT_DETAILS ("WAV audio demuxer",
"Codec/Demuxer/Audio",
"Parse a .wav file into raw audio",
"Erik Walthinsen <omega@cse.ogi.edu>");
static GstStaticPadTemplate sink_template_factory =
GST_STATIC_PAD_TEMPLATE ("wavparse_sink",
GST_PAD_SINK,
@ -155,22 +175,13 @@ static void
gst_wavparse_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstPadTemplate *templ;
static GstElementDetails gst_wavparse_details =
GST_ELEMENT_DETAILS ("WAV audio demuxer",
"Codec/Demuxer/Audio",
"Parse a .wav file into raw audio",
"Erik Walthinsen <omega@cse.ogi.edu>");
gst_element_class_set_details (element_class, &gst_wavparse_details);
/* register src pads */
templ = gst_static_pad_template_get (&sink_template_factory);
gst_element_class_add_pad_template (element_class, templ);
gst_object_unref (templ);
templ = gst_static_pad_template_get (&src_template_factory);
gst_element_class_add_pad_template (element_class, templ);
gst_object_unref (templ);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_template_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_template_factory));
gst_element_class_set_details (element_class, &gst_wavparse_details);
}
static void
@ -185,13 +196,28 @@ gst_wavparse_class_init (GstWavParseClass * klass)
parent_class = g_type_class_peek_parent (klass);
object_class->get_property = gst_wavparse_get_property;
object_class->dispose = gst_wavparse_dispose;
gstelement_class->change_state = gst_wavparse_change_state;
gstelement_class->send_event = gst_wavparse_send_event;
GST_DEBUG_CATEGORY_INIT (wavparse_debug, "wavparse", 0, "WAV parser");
}
static void
gst_wavparse_dispose (GObject * object)
{
GST_DEBUG ("WAV: Dispose\n");
GstWavParse *wav = GST_WAVPARSE (object);
if (wav->adapter) {
g_object_unref (wav->adapter);
wav->adapter = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_wavparse_reset (GstWavParse * wavparse)
{
@ -209,6 +235,12 @@ gst_wavparse_reset (GstWavParse * wavparse)
wavparse->dataleft = 0;
wavparse->datasize = 0;
wavparse->datastart = 0;
wavparse->got_fmt = FALSE;
wavparse->first = TRUE;
if (wavparse->seek_event)
gst_event_unref (wavparse->seek_event);
wavparse->seek_event = NULL;
/* we keep the segment info in time */
gst_segment_init (&wavparse->segment, GST_FORMAT_TIME);
@ -226,7 +258,12 @@ gst_wavparse_init (GstWavParse * wavparse)
GST_DEBUG_FUNCPTR (gst_wavparse_sink_activate));
gst_pad_set_activatepull_function (wavparse->sinkpad,
GST_DEBUG_FUNCPTR (gst_wavparse_sink_activate_pull));
gst_pad_set_chain_function (wavparse->sinkpad,
GST_DEBUG_FUNCPTR (gst_wavparse_chain));
gst_element_add_pad (GST_ELEMENT (wavparse), wavparse->sinkpad);
/* src, will be created later */
wavparse->srcpad = NULL;
}
static void
@ -254,6 +291,8 @@ gst_wavparse_create_sourcepad (GstWavParse * wavparse)
GST_DEBUG_FUNCPTR (gst_wavparse_pad_query));
gst_pad_set_event_function (wavparse->srcpad,
GST_DEBUG_FUNCPTR (gst_wavparse_srcpad_event));
GST_DEBUG_OBJECT (wavparse, "srcpad created");
}
static void
@ -270,6 +309,8 @@ gst_wavparse_get_property (GObject * object,
}
}
#if 0
static void
gst_wavparse_parse_adtl (GstWavParse * wavparse, int len)
@ -453,9 +494,7 @@ gst_wavparse_parse_adtl (GstWavParse * wavparse, int len)
g_object_notify (G_OBJECT (wavparse), "metadata");
}
#endif
#if 0
static void
gst_wavparse_parse_cues (GstWavParse * wavparse, int len)
{
@ -518,49 +557,7 @@ gst_wavparse_parse_cues (GstWavParse * wavparse, int len)
g_object_notify (G_OBJECT (wavparse), "metadata");
}
#endif
static gboolean
gst_wavparse_parse_file_header (GstElement * element, GstBuffer * buf)
{
guint32 doctype;
if (!gst_riff_parse_file_header (element, buf, &doctype))
return FALSE;
if (doctype != GST_RIFF_RIFF_WAVE)
goto not_wav;
return TRUE;
/* ERRORS */
not_wav:
{
GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
("File is not an WAVE file: %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (doctype)));
return FALSE;
}
}
static GstFlowReturn
gst_wavparse_stream_init (GstWavParse * wav)
{
GstFlowReturn res;
GstBuffer *buf = NULL;
if ((res = gst_pad_pull_range (wav->sinkpad,
wav->offset, 12, &buf)) != GST_FLOW_OK)
return res;
else if (!gst_wavparse_parse_file_header (GST_ELEMENT (wav), buf))
return GST_FLOW_ERROR;
wav->offset += 12;
return GST_FLOW_OK;
}
#if 0
/* Read 'fmt ' header */
static gboolean
gst_wavparse_fmt (GstWavParse * wav)
@ -718,6 +715,48 @@ gst_wavparse_other (GstWavParse * wav)
}
#endif
static gboolean
gst_wavparse_parse_file_header (GstElement * element, GstBuffer * buf)
{
guint32 doctype;
if (!gst_riff_parse_file_header (element, buf, &doctype))
return FALSE;
if (doctype != GST_RIFF_RIFF_WAVE)
goto not_wav;
return TRUE;
/* ERRORS */
not_wav:
{
GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
("File is not an WAVE file: %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (doctype)));
return FALSE;
}
}
static GstFlowReturn
gst_wavparse_stream_init (GstWavParse * wav)
{
GstFlowReturn res;
GstBuffer *buf = NULL;
if ((res = gst_pad_pull_range (wav->sinkpad,
wav->offset, 12, &buf)) != GST_FLOW_OK)
return res;
else if (!gst_wavparse_parse_file_header (GST_ELEMENT (wav), buf))
return GST_FLOW_ERROR;
wav->offset += 12;
return GST_FLOW_OK;
}
/* This function is used to perform seeks on the element in
* pull mode.
*
@ -740,7 +779,6 @@ gst_wavparse_perform_seek (GstWavParse * wav, GstEvent * event)
gboolean update;
GstSegment seeksegment;
if (event) {
GST_DEBUG_OBJECT (wav, "doing seek with event");
@ -770,10 +808,12 @@ gst_wavparse_perform_seek (GstWavParse * wav, GstEvent * event)
flush = flags & GST_SEEK_FLAG_FLUSH;
if (flush)
if (flush && wav->srcpad) {
GST_DEBUG_OBJECT (wav, "sending flush start");
gst_pad_push_event (wav->srcpad, gst_event_new_flush_start ());
else
} else {
gst_pad_pause_task (wav->sinkpad);
}
GST_PAD_STREAM_LOCK (wav->sinkpad);
@ -814,18 +854,21 @@ gst_wavparse_perform_seek (GstWavParse * wav, GstEvent * event)
GST_TIME_ARGS (seeksegment.start), GST_TIME_ARGS (stop));
/* prepare for streaming again */
if (flush) {
gst_pad_push_event (wav->srcpad, gst_event_new_flush_stop ());
} else if (wav->segment_running) {
/* we are running the current segment and doing a non-flushing seek,
* close the segment first based on the last_stop. */
GST_DEBUG_OBJECT (wav, "closing running segment %" G_GINT64_FORMAT
" to %" G_GINT64_FORMAT, wav->segment.start, wav->segment.last_stop);
if (wav->srcpad) {
if (flush) {
GST_DEBUG_OBJECT (wav, "sending flush stop");
gst_pad_push_event (wav->srcpad, gst_event_new_flush_stop ());
} else if (wav->segment_running) {
/* we are running the current segment and doing a non-flushing seek,
* close the segment first based on the last_stop. */
GST_DEBUG_OBJECT (wav, "closing running segment %" G_GINT64_FORMAT
" to %" G_GINT64_FORMAT, wav->segment.start, wav->segment.last_stop);
gst_pad_push_event (wav->srcpad,
gst_event_new_new_segment (TRUE,
wav->segment.rate, wav->segment.format,
wav->segment.start, wav->segment.last_stop, wav->segment.time));
gst_pad_push_event (wav->srcpad,
gst_event_new_new_segment (TRUE,
wav->segment.rate, wav->segment.format,
wav->segment.start, wav->segment.last_stop, wav->segment.time));
}
}
memcpy (&wav->segment, &seeksegment, sizeof (GstSegment));
@ -853,8 +896,10 @@ gst_wavparse_perform_seek (GstWavParse * wav, GstEvent * event)
}
wav->segment_running = TRUE;
gst_pad_start_task (wav->sinkpad, (GstTaskFunction) gst_wavparse_loop,
wav->sinkpad);
if (!wav->streaming) {
gst_pad_start_task (wav->sinkpad, (GstTaskFunction) gst_wavparse_loop,
wav->sinkpad);
}
GST_PAD_STREAM_UNLOCK (wav->sinkpad);
@ -868,6 +913,59 @@ no_format:
}
}
/*
* gst_wavparse_peek_chunk_info:
* @wav Wavparse object
* @tag holder for tag
* @size holder for tag size
*
* Peek next chunk info (tag and size)
*
* Returns: %TRUE when one chunk info has been got from the adapter
*/
static gboolean
gst_wavparse_peek_chunk_info (GstWavParse * wav, guint32 * tag, guint32 * size)
{
const guint8 *data = NULL;
if (gst_adapter_available (wav->adapter) < 8) {
return FALSE;
}
GST_DEBUG ("Next chunk size is %d bytes", *size);
data = gst_adapter_peek (wav->adapter, 8);
*tag = GST_READ_UINT32_LE (data);
*size = GST_READ_UINT32_LE (data + 4);
return TRUE;
}
/*
* gst_wavparse_peek_chunk:
* @wav Wavparse object
* @tag holder for tag
* @size holder for tag size
*
* Peek enough data for one full chunk
*
* Returns: %TRUE when one chunk has been got
*/
static gboolean
gst_wavparse_peek_chunk (GstWavParse * wav, guint32 * tag, guint32 * size)
{
guint32 peek_size = 0;
gst_wavparse_peek_chunk_info (wav, tag, size);
GST_DEBUG ("Need to peek chunk of %d bytes", *size);
peek_size = (*size + 1) & ~1;
if (gst_adapter_available (wav->adapter) >= (8 + peek_size)) {
return TRUE;
} else {
return FALSE;
}
}
static gboolean
gst_wavparse_get_upstream_size (GstWavParse * wav, gint64 * len)
{
@ -887,97 +985,127 @@ static GstFlowReturn
gst_wavparse_stream_headers (GstWavParse * wav)
{
GstFlowReturn res;
GstBuffer *buf, *extra;
GstBuffer *buf;
gst_riff_strf_auds *header = NULL;
guint32 tag;
guint32 tag, size;
gboolean gotdata = FALSE;
GstCaps *caps;
gint64 duration;
gchar *codec_name = NULL;
GstEvent **event_p;
/* The header start with a 'fmt ' tag */
if ((res = gst_riff_read_chunk (GST_ELEMENT (wav), wav->sinkpad,
&wav->offset, &tag, &buf)) != GST_FLOW_OK)
return res;
if (!wav->got_fmt) {
GstBuffer *extra;
else if (tag != GST_RIFF_TAG_fmt)
goto invalid_wav;
/* The header start with a 'fmt ' tag */
if (!(gst_riff_parse_strf_auds (GST_ELEMENT (wav), buf, &header, &extra)))
goto parse_header_error;
if (wav->streaming) {
if (!gst_wavparse_peek_chunk (wav, &tag, &size))
return GST_FLOW_OK;
/* Note: gst_riff_create_audio_caps might nedd to fix values in
* the header header depending on the format, so call it first */
caps =
gst_riff_create_audio_caps (header->format, NULL, header, extra,
NULL, &codec_name);
buf = gst_buffer_new ();
gst_buffer_ref (buf);
gst_adapter_flush (wav->adapter, 8);
wav->offset += 8;
GST_BUFFER_DATA (buf) = (guint8 *) gst_adapter_peek (wav->adapter, size);
GST_BUFFER_SIZE (buf) = size;
if (extra)
gst_buffer_unref (extra);
} else {
if ((res = gst_riff_read_chunk (GST_ELEMENT (wav), wav->sinkpad,
&wav->offset, &tag, &buf)) != GST_FLOW_OK)
return res;
}
wav->format = header->format;
wav->rate = header->rate;
wav->channels = header->channels;
if (tag != GST_RIFF_TAG_fmt)
goto invalid_wav;
if (wav->channels == 0)
goto no_channels;
if (!(gst_riff_parse_strf_auds (GST_ELEMENT (wav), buf, &header, &extra)))
goto parse_header_error;
wav->blockalign = header->blockalign;
wav->width = (header->blockalign * 8) / header->channels;
wav->depth = header->size;
wav->bps = header->av_bps;
if (extra)
gst_buffer_unref (extra);
if (wav->bps <= 0)
goto no_bitrate;
if (wav->streaming) {
gst_adapter_flush (wav->adapter, size);
wav->offset += size;
GST_BUFFER_DATA (buf) = NULL;
gst_buffer_unref (buf);
}
wav->bytes_per_sample = wav->channels * wav->width / 8;
if (wav->bytes_per_sample <= 0)
goto no_bytes_per_sample;
/* Note: gst_riff_create_audio_caps might nedd to fix values in
* the header header depending on the format, so call it first */
caps =
gst_riff_create_audio_caps (header->format, NULL, header, NULL,
NULL, &codec_name);
g_free (header);
wav->format = header->format;
wav->rate = header->rate;
wav->channels = header->channels;
if (!caps)
goto unknown_format;
if (wav->channels == 0)
goto no_channels;
GST_DEBUG_OBJECT (wav, "blockalign = %u", (guint) wav->blockalign);
GST_DEBUG_OBJECT (wav, "width = %u", (guint) wav->width);
GST_DEBUG_OBJECT (wav, "depth = %u", (guint) wav->depth);
GST_DEBUG_OBJECT (wav, "bps = %u", (guint) wav->bps);
wav->blockalign = header->blockalign;
wav->width = (header->blockalign * 8) / header->channels;
wav->depth = header->size;
wav->bps = header->av_bps;
/* create pad later so we can sniff the first few bytes
* of the real data and correct our caps if necessary */
gst_caps_replace (&wav->caps, caps);
gst_caps_replace (&caps, NULL);
if (wav->bps <= 0)
goto no_bitrate;
if (codec_name) {
wav->tags = gst_tag_list_new ();
wav->bytes_per_sample = wav->channels * wav->width / 8;
if (wav->bytes_per_sample <= 0)
goto no_bytes_per_sample;
gst_tag_list_add (wav->tags, GST_TAG_MERGE_REPLACE,
GST_TAG_AUDIO_CODEC, codec_name, NULL);
g_free (header);
g_free (codec_name);
codec_name = NULL;
if (!caps)
goto unknown_format;
GST_DEBUG_OBJECT (wav, "blockalign = %u", (guint) wav->blockalign);
GST_DEBUG_OBJECT (wav, "width = %u", (guint) wav->width);
GST_DEBUG_OBJECT (wav, "depth = %u", (guint) wav->depth);
GST_DEBUG_OBJECT (wav, "bps = %u", (guint) wav->bps);
/* create pad later so we can sniff the first few bytes
* of the real data and correct our caps if necessary */
gst_caps_replace (&wav->caps, caps);
gst_caps_replace (&caps, NULL);
wav->got_fmt = TRUE;
if (codec_name) {
wav->tags = gst_tag_list_new ();
gst_tag_list_add (wav->tags, GST_TAG_MERGE_REPLACE,
GST_TAG_AUDIO_CODEC, codec_name, NULL);
g_free (codec_name);
codec_name = NULL;
}
GST_DEBUG_OBJECT (wav, "frequency %d, channels %d", wav->rate,
wav->channels);
}
GST_DEBUG_OBJECT (wav, "frequency %d, channels %d", wav->rate, wav->channels);
/* loop headers until we get data */
while (!gotdata) {
guint size;
guint32 tag;
if ((res =
gst_pad_pull_range (wav->sinkpad, wav->offset, 8,
&buf)) != GST_FLOW_OK)
goto header_read_error;
if (wav->streaming) {
if (!gst_wavparse_peek_chunk_info (wav, &tag, &size))
return GST_FLOW_OK;
} else {
if ((res =
gst_pad_pull_range (wav->sinkpad, wav->offset, 8,
&buf)) != GST_FLOW_OK)
goto header_read_error;
tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
}
/*
wav is a st00pid format, we don't know for sure where data starts.
So we have to go bit by bit until we find the 'data' header
*/
tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf));
size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4);
switch (tag) {
/* TODO : Implement the various cases */
@ -986,6 +1114,11 @@ gst_wavparse_stream_headers (GstWavParse * wav)
GST_DEBUG_OBJECT (wav, "Got 'data' TAG, size : %d", size);
gotdata = TRUE;
if (wav->streaming) {
gst_adapter_flush (wav->adapter, 8);
} else {
gst_buffer_unref (buf);
}
wav->offset += 8;
wav->datastart = wav->offset;
/* file might be truncated */
@ -998,12 +1131,19 @@ gst_wavparse_stream_headers (GstWavParse * wav)
break;
}
default:
if (wav->streaming) {
if (!gst_wavparse_peek_chunk (wav, &tag, &size))
return GST_FLOW_OK;
}
GST_DEBUG_OBJECT (wav, "Ignoring tag %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (tag));
wav->offset += 8 + ((size + 1) & ~1);
break;
if (wav->streaming) {
gst_adapter_flush (wav->adapter, 8 + ((size + 1) & ~1));
} else {
gst_buffer_unref (buf);
}
}
gst_buffer_unref (buf);
}
GST_DEBUG_OBJECT (wav, "Finished parsing headers");
@ -1021,6 +1161,7 @@ gst_wavparse_stream_headers (GstWavParse * wav)
event_p = &wav->seek_event;
gst_event_replace (event_p, NULL);
wav->state = GST_WAVPARSE_DATA;
return GST_FLOW_OK;
/* ERROR */
@ -1080,6 +1221,32 @@ header_read_error:
}
}
/*
* Read WAV file tag when streaming
*/
static GstFlowReturn
gst_wavparse_parse_stream_init (GstWavParse * wav)
{
if (gst_adapter_available (wav->adapter) >= 12) {
GstBuffer *tmp = gst_buffer_new ();
/* _take flushes the data */
GST_BUFFER_DATA (tmp) = gst_adapter_take (wav->adapter, 12);
GST_BUFFER_SIZE (tmp) = 12;
GST_DEBUG ("Parsing wav header");
if (!gst_wavparse_parse_file_header (GST_ELEMENT (wav), tmp)) {
return GST_FLOW_ERROR;
}
wav->offset += 12;
/* Go to next state */
wav->state = GST_WAVPARSE_HEADER;
}
return GST_FLOW_OK;
}
/* handle an event sent directly to the element.
*
* This event can be sent either in the READY state or the
@ -1100,6 +1267,8 @@ gst_wavparse_send_event (GstElement * element, GstEvent * event)
gboolean res = FALSE;
GstEvent **event_p;
GST_DEBUG_OBJECT (wav, "received event %s", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
if (wav->state == GST_WAVPARSE_DATA) {
@ -1149,6 +1318,7 @@ gst_wavparse_add_src_pad (GstWavParse * wav, GstBuffer * buf)
gst_element_add_pad (GST_ELEMENT (wav), wav->srcpad);
gst_element_no_more_pads (GST_ELEMENT (wav));
GST_DEBUG_OBJECT (wav, "Send newsegment event on newpad");
gst_pad_push_event (wav->srcpad, wav->newsegment);
wav->newsegment = NULL;
@ -1161,7 +1331,7 @@ gst_wavparse_add_src_pad (GstWavParse * wav, GstBuffer * buf)
#define MAX_BUFFER_SIZE 4096
static GstFlowReturn
gst_wavparse_stream_data (GstWavParse * wav, gboolean first)
gst_wavparse_stream_data (GstWavParse * wav)
{
GstBuffer *buf = NULL;
GstFlowReturn res = GST_FLOW_OK;
@ -1169,8 +1339,10 @@ gst_wavparse_stream_data (GstWavParse * wav, gboolean first)
GstClockTime timestamp, next_timestamp;
guint64 pos, nextpos;
GST_LOG_OBJECT (wav, "offset: %" G_GINT64_FORMAT " , end: %" G_GINT64_FORMAT,
wav->offset, wav->end_offset);
iterate_adapter:
GST_LOG_OBJECT (wav,
"offset: %" G_GINT64_FORMAT " , end: %" G_GINT64_FORMAT " , dataleft: %"
G_GINT64_FORMAT, wav->offset, wav->end_offset, wav->dataleft);
/* Get the next n bytes and output them */
if (wav->dataleft == 0 || wav->dataleft < wav->blockalign)
@ -1187,18 +1359,32 @@ gst_wavparse_stream_data (GstWavParse * wav, gboolean first)
GST_LOG_OBJECT (wav, "Fetching %" G_GINT64_FORMAT " bytes of data "
"from the sinkpad", desired);
if ((res = gst_pad_pull_range (wav->sinkpad, wav->offset,
desired, &buf)) != GST_FLOW_OK)
goto pull_error;
if (wav->streaming) {
guint avail = gst_adapter_available (wav->adapter);
obtained = GST_BUFFER_SIZE (buf);
if (avail < desired) {
GST_LOG_OBJECT (wav, "Got only %d bytes of data from the sinkpad", avail);
return GST_FLOW_OK;
}
buf = gst_buffer_new ();
GST_BUFFER_DATA (buf) = gst_adapter_take (wav->adapter, desired);
GST_BUFFER_SIZE (buf) = desired;
} else {
if ((res = gst_pad_pull_range (wav->sinkpad, wav->offset,
desired, &buf)) != GST_FLOW_OK)
goto pull_error;
}
/* first chunk of data? create the source pad. We do this only here so
* we can detect broken .wav files with dts disguised as raw PCM (sigh) */
if (first) {
if (G_UNLIKELY (wav->first)) {
wav->first = FALSE;
gst_wavparse_add_src_pad (wav, buf);
}
obtained = GST_BUFFER_SIZE (buf);
/* our positions */
pos = wav->offset - wav->datastart;
nextpos = pos + obtained;
@ -1220,7 +1406,7 @@ gst_wavparse_stream_data (GstWavParse * wav, gboolean first)
/* don't forget to set the caps on the buffer */
gst_buffer_set_caps (buf, GST_PAD_CAPS (wav->srcpad));
GST_DEBUG_OBJECT (wav,
GST_LOG_OBJECT (wav,
"Got buffer. timestamp:%" GST_TIME_FORMAT " , duration:%" GST_TIME_FORMAT
", size:%u", GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), GST_BUFFER_SIZE (buf));
@ -1230,10 +1416,18 @@ gst_wavparse_stream_data (GstWavParse * wav, gboolean first)
if (obtained < wav->dataleft) {
wav->dataleft -= obtained;
wav->offset += obtained;
} else {
wav->dataleft = 0;
}
wav->offset += obtained;
/* Iterate until need more data, so adapter size won't grow */
if (wav->streaming) {
GST_LOG_OBJECT (wav,
"offset: %" G_GINT64_FORMAT " , end: %" G_GINT64_FORMAT, wav->offset,
wav->end_offset);
goto iterate_adapter;
}
return res;
/* ERROR */
@ -1275,8 +1469,11 @@ gst_wavparse_loop (GstPad * pad)
GstFlowReturn ret;
GstWavParse *wav = GST_WAVPARSE (GST_PAD_PARENT (pad));
GST_LOG_OBJECT (wav, "process data");
switch (wav->state) {
case GST_WAVPARSE_START:
GST_DEBUG_OBJECT (wav, "GST_WAVPARSE_START");
if ((ret = gst_wavparse_stream_init (wav)) != GST_FLOW_OK)
goto pause;
@ -1284,15 +1481,15 @@ gst_wavparse_loop (GstPad * pad)
/* fall-through */
case GST_WAVPARSE_HEADER:
GST_DEBUG_OBJECT (wav, "GST_WAVPARSE_HEADER");
if ((ret = gst_wavparse_stream_headers (wav)) != GST_FLOW_OK)
goto pause;
wav->state = GST_WAVPARSE_DATA;
if ((ret = gst_wavparse_stream_data (wav, TRUE)) != GST_FLOW_OK)
goto pause;
break;
/* fall-through */
case GST_WAVPARSE_DATA:
if ((ret = gst_wavparse_stream_data (wav, FALSE)) != GST_FLOW_OK)
if ((ret = gst_wavparse_stream_data (wav)) != GST_FLOW_OK)
goto pause;
break;
default:
@ -1315,6 +1512,58 @@ pause:
}
}
static GstFlowReturn
gst_wavparse_chain (GstPad * pad, GstBuffer * buf)
{
GstFlowReturn ret;
GstWavParse *wav = GST_WAVPARSE (GST_PAD_PARENT (pad));
GST_LOG_OBJECT (wav, "adapter_push %" G_GINT64_FORMAT " bytes",
GST_BUFFER_SIZE (buf));
gst_adapter_push (wav->adapter, buf);
switch (wav->state) {
case GST_WAVPARSE_START:
GST_DEBUG_OBJECT (wav, "GST_WAVPARSE_START");
if ((ret = gst_wavparse_parse_stream_init (wav)) != GST_FLOW_OK)
goto pause;
wav->state = GST_WAVPARSE_HEADER;
/* fall-through */
case GST_WAVPARSE_HEADER:
GST_DEBUG_OBJECT (wav, "GST_WAVPARSE_HEADER");
if ((ret = gst_wavparse_stream_headers (wav)) != GST_FLOW_OK)
goto pause;
wav->state = GST_WAVPARSE_DATA;
/* fall-through */
case GST_WAVPARSE_DATA:
if ((ret = gst_wavparse_stream_data (wav)) != GST_FLOW_OK)
goto pause;
break;
default:
g_assert_not_reached ();
}
return ret;
pause:
GST_LOG_OBJECT (wav, "pausing task %d", ret);
gst_pad_pause_task (wav->sinkpad);
if (GST_FLOW_IS_FATAL (ret)) {
/* for fatal errors we post an error message */
GST_ELEMENT_ERROR (wav, STREAM, FAILED,
(_("Internal data stream error.")),
("streaming stopped, reason %s", gst_flow_get_name (ret)));
if (wav->srcpad != NULL)
gst_pad_push_event (wav->srcpad, gst_event_new_eos ());
}
return ret;
}
#if 0
/* convert and query stuff */
static const GstFormat *
@ -1526,7 +1775,8 @@ gst_wavparse_srcpad_event (GstPad * pad, GstEvent * event)
GstWavParse *wavparse = GST_WAVPARSE (GST_PAD_PARENT (pad));
gboolean res = TRUE;
GST_DEBUG_OBJECT (wavparse, "event %d", GST_EVENT_TYPE (event));
GST_DEBUG_OBJECT (wavparse, "event %d, %s", GST_EVENT_TYPE (event),
GST_EVENT_TYPE_NAME (event));
/* can only handle events when we are in the data state */
if (wavparse->state != GST_WAVPARSE_DATA)
@ -1551,20 +1801,35 @@ gst_wavparse_srcpad_event (GstPad * pad, GstEvent * event)
static gboolean
gst_wavparse_sink_activate (GstPad * sinkpad)
{
if (gst_pad_check_pull_range (sinkpad))
return gst_pad_activate_pull (sinkpad, TRUE);
GstWavParse *wav = GST_WAVPARSE (gst_pad_get_parent (sinkpad));
gboolean res;
if (gst_pad_check_pull_range (sinkpad)) {
GST_DEBUG ("going to pull mode");
wav->streaming = FALSE;
wav->adapter = NULL;
res = gst_pad_activate_pull (sinkpad, TRUE);
} else {
GST_DEBUG ("going to push (streaming) mode");
wav->streaming = TRUE;
wav->adapter = gst_adapter_new ();
res = gst_pad_activate_push (sinkpad, TRUE);
}
gst_object_unref (wav);
return res;
}
/* FIXME, we can only operate in pull mode for now */
GST_DEBUG_OBJECT (sinkpad, "pull_range not supported on sinkpad");
return FALSE;
};
static gboolean
gst_wavparse_sink_activate_pull (GstPad * sinkpad, gboolean active)
{
GstWavParse *wav = GST_WAVPARSE (gst_pad_get_parent (sinkpad));
GST_DEBUG_OBJECT (wav, "activating pull");
if (active) {
/* if we have a scheduler we can start the task */
wav->segment_running = TRUE;
gst_pad_start_task (sinkpad, (GstTaskFunction) gst_wavparse_loop, sinkpad);
} else {
gst_pad_stop_task (sinkpad);
@ -1580,6 +1845,10 @@ gst_wavparse_change_state (GstElement * element, GstStateChange transition)
GstStateChangeReturn ret;
GstWavParse *wav = GST_WAVPARSE (element);
GST_DEBUG_OBJECT (wav, "changing state %s - %s",
gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
@ -1603,8 +1872,11 @@ gst_wavparse_change_state (GstElement * element, GstStateChange transition)
gst_wavparse_destroy_sourcepad (wav);
gst_event_replace (event_p, NULL);
gst_wavparse_reset (wav);
}
if (wav->adapter) {
gst_adapter_clear (wav->adapter);
}
break;
}
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
@ -1618,6 +1890,8 @@ plugin_init (GstPlugin * plugin)
{
gst_riff_init ();
GST_DEBUG_CATEGORY_INIT (wavparse_debug, "wavparse", 0, "WAV parser");
return gst_element_register (plugin, "wavparse", GST_RANK_PRIMARY,
GST_TYPE_WAVPARSE);
}

10
gst/wavparse/gstwavparse.h
View file

@ -1,5 +1,6 @@
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2006> Nokia Corporation, Stefan Kost <stefan.kost@nokia.com>.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -25,6 +26,7 @@
#include <gst/gst.h>
#include "gst/riff/riff-ids.h"
#include "gst/riff/riff-read.h"
#include <gst/base/gstadapter.h>
G_BEGIN_DECLS
@ -93,9 +95,17 @@ struct _GstWavParse {
/* pending seek */
GstEvent *seek_event;
/* For streaming */
GstAdapter *adapter;
gboolean got_fmt;
gboolean streaming;
/* configured segment, start/stop expressed in time */
GstSegment segment;
gboolean segment_running;
/* for late pad configuration */
gboolean first;
};
struct _GstWavParseClass {