mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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210487b50a
We need to reset the internal state to be able to parse a new stream. When doing so keep seek event and do not destroy the adapter. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6840>
3042 lines
90 KiB
C
3042 lines
90 KiB
C
/* -*- Mode: C; tab-width: 2; indent-tabs-mode: t; c-basic-offset: 2 -*- */
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2006> Nokia Corporation, Stefan Kost <stefan.kost@nokia.com>.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-wavparse
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* @title: wavparse
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*
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* Parse a .wav file into raw or compressed audio.
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*
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* Wavparse supports both push and pull mode operations, making it possible to
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* stream from a network source.
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*
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* ## Example launch line
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* |[
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* gst-launch-1.0 filesrc location=sine.wav ! wavparse ! audioconvert ! alsasink
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* ]| Read a wav file and output to the soundcard using the ALSA element. The
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* wav file is assumed to contain raw uncompressed samples.
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* |[
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* gst-launch-1.0 gnomevfssrc location=http://www.example.org/sine.wav ! queue ! wavparse ! audioconvert ! alsasink
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* ]| Stream data from a network url.
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*
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*/
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/*
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* TODO:
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* http://replaygain.hydrogenaudio.org/file_format_wav.html
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <math.h>
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#include "gstwavparse.h"
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#include "gst/riff/riff-media.h"
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#include <gst/base/gsttypefindhelper.h>
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#include <gst/pbutils/descriptions.h>
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#include <glib/gi18n-lib.h>
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GST_DEBUG_CATEGORY_STATIC (wavparse_debug);
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#define GST_CAT_DEFAULT (wavparse_debug)
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/* Data size chunk of RF64,
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* see http://tech.ebu.ch/docs/tech/tech3306-2009.pdf */
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#define GST_RS64_TAG_DS64 GST_MAKE_FOURCC ('d','s','6','4')
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static void gst_wavparse_dispose (GObject * object);
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static gboolean gst_wavparse_sink_activate (GstPad * sinkpad,
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GstObject * parent);
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static gboolean gst_wavparse_sink_activate_mode (GstPad * sinkpad,
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GstObject * parent, GstPadMode mode, gboolean active);
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static gboolean gst_wavparse_send_event (GstElement * element,
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GstEvent * event);
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static GstStateChangeReturn gst_wavparse_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean gst_wavparse_pad_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static gboolean gst_wavparse_pad_convert (GstPad * pad, GstFormat src_format,
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gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
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static GstFlowReturn gst_wavparse_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buf);
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static gboolean gst_wavparse_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static void gst_wavparse_loop (GstPad * pad);
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static gboolean gst_wavparse_srcpad_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static void gst_wavparse_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_wavparse_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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#define DEFAULT_IGNORE_LENGTH FALSE
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enum
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{
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PROP_0,
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PROP_IGNORE_LENGTH,
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};
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static GstStaticPadTemplate sink_template_factory =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-wav;audio/x-rf64")
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);
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#define DEBUG_INIT \
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GST_DEBUG_CATEGORY_INIT (wavparse_debug, "wavparse", 0, "WAV parser");
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#define gst_wavparse_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstWavParse, gst_wavparse, GST_TYPE_ELEMENT,
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DEBUG_INIT);
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GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (wavparse, "wavparse", GST_RANK_PRIMARY,
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GST_TYPE_WAVPARSE, gst_riff_init ();
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);
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typedef struct
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{
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/* Offset Size Description Value
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* 0x00 4 ID unique identification value
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* 0x04 4 Position play order position
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* 0x08 4 Data Chunk ID RIFF ID of corresponding data chunk
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* 0x0c 4 Chunk Start Byte Offset of Data Chunk *
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* 0x10 4 Block Start Byte Offset to sample of First Channel
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* 0x14 4 Sample Offset Byte Offset to sample byte of First Channel
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*/
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guint32 id;
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guint32 position;
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guint32 data_chunk_id;
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guint32 chunk_start;
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guint32 block_start;
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guint32 sample_offset;
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} GstWavParseCue;
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typedef struct
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{
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/* Offset Size Description Value
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* 0x08 4 Cue Point ID 0 - 0xFFFFFFFF
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* 0x0c Text
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*/
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guint32 cue_point_id;
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gchar *text;
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} GstWavParseLabl, GstWavParseNote;
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static void
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gst_wavparse_class_init (GstWavParseClass * klass)
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{
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GstElementClass *gstelement_class;
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GObjectClass *object_class;
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GstPadTemplate *src_template;
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gstelement_class = (GstElementClass *) klass;
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object_class = (GObjectClass *) klass;
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parent_class = g_type_class_peek_parent (klass);
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object_class->dispose = gst_wavparse_dispose;
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object_class->set_property = gst_wavparse_set_property;
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object_class->get_property = gst_wavparse_get_property;
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/**
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* GstWavParse:ignore-length:
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*
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* This selects whether the length found in a data chunk
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* should be ignored. This may be useful for streamed audio
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* where the length is unknown until the end of streaming,
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* and various software/hardware just puts some random value
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* in there and hopes it doesn't break too much.
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*/
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g_object_class_install_property (object_class, PROP_IGNORE_LENGTH,
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g_param_spec_boolean ("ignore-length",
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"Ignore length",
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"Ignore length from the Wave header",
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DEFAULT_IGNORE_LENGTH, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)
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);
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gstelement_class->change_state = gst_wavparse_change_state;
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gstelement_class->send_event = gst_wavparse_send_event;
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/* register pads */
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gst_element_class_add_static_pad_template (gstelement_class,
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&sink_template_factory);
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src_template = gst_pad_template_new ("src", GST_PAD_SRC,
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GST_PAD_ALWAYS, gst_riff_create_audio_template_caps ());
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gst_element_class_add_pad_template (gstelement_class, src_template);
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gst_element_class_set_static_metadata (gstelement_class, "WAV audio demuxer",
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"Codec/Demuxer/Audio",
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"Parse a .wav file into raw audio",
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"Erik Walthinsen <omega@cse.ogi.edu>");
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}
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static void
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gst_wavparse_notes_free (GstWavParseNote * note)
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{
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if (note)
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g_free (note->text);
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g_free (note);
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}
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static void
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gst_wavparse_labls_free (GstWavParseLabl * labl)
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{
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if (labl)
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g_free (labl->text);
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g_free (labl);
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}
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/* reset seek event and destroy adapter if @hard is TRUE */
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static void
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gst_wavparse_reset (GstWavParse * wav, gboolean hard)
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{
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wav->state = GST_WAVPARSE_START;
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/* These will all be set correctly in the fmt chunk */
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wav->depth = 0;
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wav->rate = 0;
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wav->width = 0;
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wav->channels = 0;
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wav->blockalign = 0;
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wav->bps = 0;
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wav->fact = 0;
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wav->offset = 0;
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wav->end_offset = 0;
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wav->dataleft = 0;
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wav->datasize = 0;
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wav->datastart = 0;
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wav->chunk_size = 0;
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wav->duration = 0;
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wav->got_fmt = FALSE;
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wav->first = TRUE;
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if (hard)
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g_clear_pointer (&wav->seek_event, gst_event_unref);
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wav->seek_event = NULL;
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if (wav->adapter) {
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gst_adapter_clear (wav->adapter);
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if (hard)
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g_clear_object (&wav->adapter);
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}
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if (wav->tags)
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gst_tag_list_unref (wav->tags);
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wav->tags = NULL;
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if (wav->toc)
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gst_toc_unref (wav->toc);
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wav->toc = NULL;
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if (wav->cues)
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g_list_free_full (wav->cues, g_free);
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wav->cues = NULL;
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if (wav->labls)
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g_list_free_full (wav->labls, (GDestroyNotify) gst_wavparse_labls_free);
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wav->labls = NULL;
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if (wav->notes)
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g_list_free_full (wav->notes, (GDestroyNotify) gst_wavparse_notes_free);
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wav->notes = NULL;
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if (wav->caps)
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gst_caps_unref (wav->caps);
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wav->caps = NULL;
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if (wav->start_segment)
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gst_event_unref (wav->start_segment);
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wav->start_segment = NULL;
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}
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static void
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gst_wavparse_dispose (GObject * object)
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{
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GstWavParse *wav = GST_WAVPARSE (object);
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GST_DEBUG_OBJECT (wav, "WAV: Dispose");
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gst_wavparse_reset (wav, TRUE);
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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static void
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gst_wavparse_init (GstWavParse * wavparse)
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{
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gst_wavparse_reset (wavparse, TRUE);
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/* sink */
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wavparse->sinkpad =
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gst_pad_new_from_static_template (&sink_template_factory, "sink");
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gst_pad_set_activate_function (wavparse->sinkpad,
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GST_DEBUG_FUNCPTR (gst_wavparse_sink_activate));
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gst_pad_set_activatemode_function (wavparse->sinkpad,
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GST_DEBUG_FUNCPTR (gst_wavparse_sink_activate_mode));
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gst_pad_set_chain_function (wavparse->sinkpad,
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GST_DEBUG_FUNCPTR (gst_wavparse_chain));
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gst_pad_set_event_function (wavparse->sinkpad,
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GST_DEBUG_FUNCPTR (gst_wavparse_sink_event));
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gst_element_add_pad (GST_ELEMENT_CAST (wavparse), wavparse->sinkpad);
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/* src */
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wavparse->srcpad =
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gst_pad_new_from_template (gst_element_class_get_pad_template
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(GST_ELEMENT_GET_CLASS (wavparse), "src"), "src");
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gst_pad_use_fixed_caps (wavparse->srcpad);
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gst_pad_set_query_function (wavparse->srcpad,
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GST_DEBUG_FUNCPTR (gst_wavparse_pad_query));
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gst_pad_set_event_function (wavparse->srcpad,
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GST_DEBUG_FUNCPTR (gst_wavparse_srcpad_event));
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gst_element_add_pad (GST_ELEMENT_CAST (wavparse), wavparse->srcpad);
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}
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static gboolean
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gst_wavparse_parse_file_header (GstElement * element, GstBuffer * buf)
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{
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guint32 doctype;
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if (!gst_riff_parse_file_header (element, buf, &doctype))
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return FALSE;
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if (doctype != GST_RIFF_RIFF_WAVE)
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goto not_wav;
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return TRUE;
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/* ERRORS */
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not_wav:
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{
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GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL),
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("File is not a WAVE file: 0x%" G_GINT32_MODIFIER "x", doctype));
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return FALSE;
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}
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}
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static GstFlowReturn
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gst_wavparse_stream_init (GstWavParse * wav)
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{
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GstFlowReturn res;
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GstBuffer *buf = NULL;
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if ((res = gst_pad_pull_range (wav->sinkpad,
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wav->offset, 12, &buf)) != GST_FLOW_OK)
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return res;
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else if (!gst_wavparse_parse_file_header (GST_ELEMENT_CAST (wav), buf))
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return GST_FLOW_ERROR;
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wav->offset += 12;
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return GST_FLOW_OK;
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}
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static gboolean
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gst_wavparse_time_to_bytepos (GstWavParse * wav, gint64 ts, gint64 * bytepos)
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{
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/* -1 always maps to -1 */
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if (ts == -1) {
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*bytepos = -1;
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return TRUE;
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}
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/* 0 always maps to 0 */
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if (ts == 0) {
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*bytepos = 0;
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return TRUE;
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}
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if (wav->bps > 0) {
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*bytepos = gst_util_uint64_scale_ceil (ts, (guint64) wav->bps, GST_SECOND);
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return TRUE;
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} else if (wav->fact) {
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guint64 bps = gst_util_uint64_scale (wav->datasize, wav->rate, wav->fact);
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*bytepos = gst_util_uint64_scale_ceil (ts, bps, GST_SECOND);
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return TRUE;
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}
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return FALSE;
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}
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/* This function is used to perform seeks on the element.
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*
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* It also works when event is NULL, in which case it will just
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* start from the last configured segment. This technique is
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* used when activating the element and to perform the seek in
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* READY.
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*/
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static gboolean
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gst_wavparse_perform_seek (GstWavParse * wav, GstEvent * event)
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{
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gboolean res;
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gdouble rate;
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GstFormat format, bformat;
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GstSeekFlags flags;
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GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type;
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gint64 cur, stop, upstream_size;
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gboolean flush;
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gboolean update;
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GstSegment seeksegment = { 0, };
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gint64 last_stop;
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guint32 seqnum = GST_SEQNUM_INVALID;
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if (event) {
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GST_DEBUG_OBJECT (wav, "doing seek with event");
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gst_event_parse_seek (event, &rate, &format, &flags,
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&cur_type, &cur, &stop_type, &stop);
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seqnum = gst_event_get_seqnum (event);
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/* no negative rates yet */
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if (rate < 0.0)
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goto negative_rate;
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if (format != wav->segment.format) {
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GST_INFO_OBJECT (wav, "converting seek-event from %s to %s",
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gst_format_get_name (format),
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gst_format_get_name (wav->segment.format));
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res = TRUE;
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if (cur_type != GST_SEEK_TYPE_NONE)
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res =
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gst_pad_query_convert (wav->srcpad, format, cur,
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wav->segment.format, &cur);
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if (res && stop_type != GST_SEEK_TYPE_NONE)
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res =
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gst_pad_query_convert (wav->srcpad, format, stop,
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wav->segment.format, &stop);
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if (!res)
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goto no_format;
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format = wav->segment.format;
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}
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} else {
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GST_DEBUG_OBJECT (wav, "doing seek without event");
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flags = 0;
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rate = 1.0;
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cur_type = GST_SEEK_TYPE_SET;
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stop_type = GST_SEEK_TYPE_SET;
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}
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|
|
|
/* in push mode, we must delegate to upstream */
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|
if (wav->streaming) {
|
|
gboolean res = FALSE;
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|
|
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/* if streaming not yet started; only prepare initial newsegment */
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if (!event || wav->state != GST_WAVPARSE_DATA) {
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if (wav->start_segment)
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gst_event_unref (wav->start_segment);
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wav->start_segment = gst_event_new_segment (&wav->segment);
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res = TRUE;
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} else {
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/* convert seek positions to byte positions in data sections */
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if (format == GST_FORMAT_TIME) {
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/* should not fail */
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if (!gst_wavparse_time_to_bytepos (wav, cur, &cur))
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goto no_position;
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if (!gst_wavparse_time_to_bytepos (wav, stop, &stop))
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goto no_position;
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}
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/* mind sample boundary and header */
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if (cur >= 0) {
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cur -= (cur % wav->bytes_per_sample);
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cur += wav->datastart;
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}
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if (stop >= 0) {
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stop -= (stop % wav->bytes_per_sample);
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stop += wav->datastart;
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}
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GST_DEBUG_OBJECT (wav, "Pushing BYTE seek rate %g, "
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"start %" G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT, rate, cur,
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stop);
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/* BYTE seek event */
|
|
event = gst_event_new_seek (rate, GST_FORMAT_BYTES, flags, cur_type, cur,
|
|
stop_type, stop);
|
|
if (seqnum != GST_SEQNUM_INVALID)
|
|
gst_event_set_seqnum (event, seqnum);
|
|
res = gst_pad_push_event (wav->sinkpad, event);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
/* get flush flag */
|
|
flush = flags & GST_SEEK_FLAG_FLUSH;
|
|
|
|
/* now we need to make sure the streaming thread is stopped. We do this by
|
|
* either sending a FLUSH_START event downstream which will cause the
|
|
* streaming thread to stop with a WRONG_STATE.
|
|
* For a non-flushing seek we simply pause the task, which will happen as soon
|
|
* as it completes one iteration (and thus might block when the sink is
|
|
* blocking in preroll). */
|
|
if (flush) {
|
|
GstEvent *fevent;
|
|
GST_DEBUG_OBJECT (wav, "sending flush start");
|
|
|
|
fevent = gst_event_new_flush_start ();
|
|
if (seqnum != GST_SEQNUM_INVALID)
|
|
gst_event_set_seqnum (fevent, seqnum);
|
|
gst_pad_push_event (wav->sinkpad, gst_event_ref (fevent));
|
|
gst_pad_push_event (wav->srcpad, fevent);
|
|
} else {
|
|
gst_pad_pause_task (wav->sinkpad);
|
|
}
|
|
|
|
/* we should now be able to grab the streaming thread because we stopped it
|
|
* with the above flush/pause code */
|
|
GST_PAD_STREAM_LOCK (wav->sinkpad);
|
|
|
|
/* save current position */
|
|
last_stop = wav->segment.position;
|
|
|
|
GST_DEBUG_OBJECT (wav, "stopped streaming at %" G_GINT64_FORMAT, last_stop);
|
|
|
|
/* copy segment, we need this because we still need the old
|
|
* segment when we close the current segment. */
|
|
memcpy (&seeksegment, &wav->segment, sizeof (GstSegment));
|
|
|
|
/* configure the seek parameters in the seeksegment. We will then have the
|
|
* right values in the segment to perform the seek */
|
|
if (event) {
|
|
GST_DEBUG_OBJECT (wav, "configuring seek");
|
|
gst_segment_do_seek (&seeksegment, rate, format, flags,
|
|
cur_type, cur, stop_type, stop, &update);
|
|
}
|
|
|
|
/* figure out the last position we need to play. If it's configured (stop !=
|
|
* -1), use that, else we play until the total duration of the file */
|
|
if ((stop = seeksegment.stop) == -1)
|
|
stop = seeksegment.duration;
|
|
|
|
GST_DEBUG_OBJECT (wav, "cur_type =%d", cur_type);
|
|
if ((cur_type != GST_SEEK_TYPE_NONE)) {
|
|
/* bring offset to bytes, if the bps is 0, we have the segment in BYTES and
|
|
* we can just copy the last_stop. If not, we use the bps to convert TIME to
|
|
* bytes. */
|
|
if (!gst_wavparse_time_to_bytepos (wav, seeksegment.position,
|
|
(gint64 *) & wav->offset))
|
|
wav->offset = seeksegment.position;
|
|
GST_LOG_OBJECT (wav, "offset=%" G_GUINT64_FORMAT, wav->offset);
|
|
wav->offset -= (wav->offset % wav->bytes_per_sample);
|
|
GST_LOG_OBJECT (wav, "offset=%" G_GUINT64_FORMAT, wav->offset);
|
|
wav->offset += wav->datastart;
|
|
GST_LOG_OBJECT (wav, "offset=%" G_GUINT64_FORMAT, wav->offset);
|
|
} else {
|
|
GST_LOG_OBJECT (wav, "continue from offset=%" G_GUINT64_FORMAT,
|
|
wav->offset);
|
|
}
|
|
|
|
if (stop_type != GST_SEEK_TYPE_NONE) {
|
|
if (!gst_wavparse_time_to_bytepos (wav, stop, (gint64 *) & wav->end_offset))
|
|
wav->end_offset = stop;
|
|
GST_LOG_OBJECT (wav, "end_offset=%" G_GUINT64_FORMAT, wav->end_offset);
|
|
wav->end_offset -= (wav->end_offset % wav->bytes_per_sample);
|
|
GST_LOG_OBJECT (wav, "end_offset=%" G_GUINT64_FORMAT, wav->end_offset);
|
|
wav->end_offset += wav->datastart;
|
|
GST_LOG_OBJECT (wav, "end_offset=%" G_GUINT64_FORMAT, wav->end_offset);
|
|
} else {
|
|
GST_LOG_OBJECT (wav, "continue to end_offset=%" G_GUINT64_FORMAT,
|
|
wav->end_offset);
|
|
}
|
|
|
|
/* make sure filesize is not exceeded due to rounding errors or so,
|
|
* same precaution as in _stream_headers */
|
|
bformat = GST_FORMAT_BYTES;
|
|
if (gst_pad_peer_query_duration (wav->sinkpad, bformat, &upstream_size))
|
|
wav->end_offset = MIN (wav->end_offset, upstream_size);
|
|
|
|
if (wav->datasize > 0 && wav->end_offset > wav->datastart + wav->datasize)
|
|
wav->end_offset = wav->datastart + wav->datasize;
|
|
|
|
/* this is the range of bytes we will use for playback */
|
|
wav->offset = MIN (wav->offset, wav->end_offset);
|
|
wav->dataleft = wav->end_offset - wav->offset;
|
|
|
|
GST_DEBUG_OBJECT (wav,
|
|
"seek: rate %lf, offset %" G_GUINT64_FORMAT ", end %" G_GUINT64_FORMAT
|
|
", segment %" GST_TIME_FORMAT " -- %" GST_TIME_FORMAT, rate, wav->offset,
|
|
wav->end_offset, GST_TIME_ARGS (seeksegment.start), GST_TIME_ARGS (stop));
|
|
|
|
/* prepare for streaming again */
|
|
if (flush) {
|
|
GstEvent *fevent;
|
|
|
|
/* if we sent a FLUSH_START, we now send a FLUSH_STOP */
|
|
GST_DEBUG_OBJECT (wav, "sending flush stop");
|
|
|
|
fevent = gst_event_new_flush_stop (TRUE);
|
|
if (seqnum != GST_SEQNUM_INVALID)
|
|
gst_event_set_seqnum (fevent, seqnum);
|
|
gst_pad_push_event (wav->sinkpad, gst_event_ref (fevent));
|
|
gst_pad_push_event (wav->srcpad, fevent);
|
|
}
|
|
|
|
/* now we did the seek and can activate the new segment values */
|
|
memcpy (&wav->segment, &seeksegment, sizeof (GstSegment));
|
|
|
|
/* if we're doing a segment seek, post a SEGMENT_START message */
|
|
if (wav->segment.flags & GST_SEEK_FLAG_SEGMENT) {
|
|
gst_element_post_message (GST_ELEMENT_CAST (wav),
|
|
gst_message_new_segment_start (GST_OBJECT_CAST (wav),
|
|
wav->segment.format, wav->segment.position));
|
|
}
|
|
|
|
/* now create the newsegment */
|
|
GST_DEBUG_OBJECT (wav, "Creating newsegment from %" G_GINT64_FORMAT
|
|
" to %" G_GINT64_FORMAT, wav->segment.position, stop);
|
|
|
|
/* store the newsegment event so it can be sent from the streaming thread. */
|
|
if (wav->start_segment)
|
|
gst_event_unref (wav->start_segment);
|
|
wav->start_segment = gst_event_new_segment (&wav->segment);
|
|
if (seqnum != GST_SEQNUM_INVALID)
|
|
gst_event_set_seqnum (wav->start_segment, seqnum);
|
|
|
|
/* mark discont if we are going to stream from another position. */
|
|
if (last_stop != wav->segment.position) {
|
|
GST_DEBUG_OBJECT (wav, "mark DISCONT, we did a seek to another position");
|
|
wav->discont = TRUE;
|
|
}
|
|
|
|
/* and start the streaming task again */
|
|
if (!wav->streaming) {
|
|
gst_pad_start_task (wav->sinkpad, (GstTaskFunction) gst_wavparse_loop,
|
|
wav->sinkpad, NULL);
|
|
}
|
|
|
|
GST_PAD_STREAM_UNLOCK (wav->sinkpad);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
negative_rate:
|
|
{
|
|
GST_DEBUG_OBJECT (wav, "negative playback rates are not supported yet.");
|
|
return FALSE;
|
|
}
|
|
no_format:
|
|
{
|
|
GST_DEBUG_OBJECT (wav, "unsupported format given, seek aborted.");
|
|
return FALSE;
|
|
}
|
|
no_position:
|
|
{
|
|
GST_DEBUG_OBJECT (wav,
|
|
"Could not determine byte position for desired time");
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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 the chunk info (header) is available
|
|
*/
|
|
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;
|
|
|
|
data = gst_adapter_map (wav->adapter, 8);
|
|
*tag = GST_READ_UINT32_LE (data);
|
|
*size = GST_READ_UINT32_LE (data + 4);
|
|
gst_adapter_unmap (wav->adapter);
|
|
|
|
GST_DEBUG ("Next chunk size is %u bytes, type %" GST_FOURCC_FORMAT, *size,
|
|
GST_FOURCC_ARGS (*tag));
|
|
|
|
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 the full chunk is available
|
|
*/
|
|
static gboolean
|
|
gst_wavparse_peek_chunk (GstWavParse * wav, guint32 * tag, guint32 * size)
|
|
{
|
|
guint32 peek_size = 0;
|
|
guint available;
|
|
|
|
if (!gst_wavparse_peek_chunk_info (wav, tag, size))
|
|
return FALSE;
|
|
|
|
/* size 0 -> empty data buffer would surprise most callers,
|
|
* large size -> do not bother trying to squeeze that into adapter,
|
|
* so we throw poor man's exception, which can be caught if caller really
|
|
* wants to handle 0 size chunk */
|
|
if (!(*size) || (*size) >= (1 << 30)) {
|
|
GST_INFO ("Invalid/unexpected chunk size %u for tag %" GST_FOURCC_FORMAT,
|
|
*size, GST_FOURCC_ARGS (*tag));
|
|
/* chain should give up */
|
|
wav->abort_buffering = TRUE;
|
|
return FALSE;
|
|
}
|
|
peek_size = (*size + 1) & ~1;
|
|
available = gst_adapter_available (wav->adapter);
|
|
|
|
if (available >= (8 + peek_size)) {
|
|
return TRUE;
|
|
} else {
|
|
GST_LOG ("but only %u bytes available now", available);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* gst_wavparse_calculate_duration:
|
|
* @wav: wavparse object
|
|
*
|
|
* Calculate duration on demand and store in @wav. Prefer bps, but use fact as a
|
|
* fallback.
|
|
*
|
|
* Returns: %TRUE if duration is available.
|
|
*/
|
|
static gboolean
|
|
gst_wavparse_calculate_duration (GstWavParse * wav)
|
|
{
|
|
if (wav->duration > 0)
|
|
return TRUE;
|
|
|
|
if (wav->bps > 0) {
|
|
GST_INFO_OBJECT (wav, "Got datasize %" G_GUINT64_FORMAT, wav->datasize);
|
|
wav->duration =
|
|
gst_util_uint64_scale_ceil (wav->datasize, GST_SECOND,
|
|
(guint64) wav->bps);
|
|
GST_INFO_OBJECT (wav, "Got duration (bps) %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (wav->duration));
|
|
return TRUE;
|
|
} else if (wav->fact) {
|
|
wav->duration =
|
|
gst_util_uint64_scale_ceil (GST_SECOND, wav->fact, wav->rate);
|
|
GST_INFO_OBJECT (wav, "Got duration (fact) %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (wav->duration));
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_waveparse_ignore_chunk (GstWavParse * wav, GstBuffer * buf, guint32 tag,
|
|
guint32 size)
|
|
{
|
|
guint flush;
|
|
|
|
if (wav->streaming) {
|
|
if (!gst_wavparse_peek_chunk (wav, &tag, &size))
|
|
return FALSE;
|
|
}
|
|
GST_DEBUG_OBJECT (wav, "Ignoring tag %" GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (tag));
|
|
flush = 8 + ((size + 1) & ~1);
|
|
wav->offset += flush;
|
|
if (wav->streaming) {
|
|
gst_adapter_flush (wav->adapter, flush);
|
|
} else {
|
|
gst_buffer_unref (buf);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* gst_wavparse_cue_chunk:
|
|
* @wav GstWavParse object
|
|
* @data holder for data
|
|
* @size holder for data size
|
|
*
|
|
* Parse cue chunk from @data to wav->cues.
|
|
*
|
|
* Returns: %TRUE when cue chunk is available
|
|
*/
|
|
static gboolean
|
|
gst_wavparse_cue_chunk (GstWavParse * wav, const guint8 * data, guint32 size)
|
|
{
|
|
guint32 i, ncues;
|
|
GList *cues = NULL;
|
|
GstWavParseCue *cue;
|
|
|
|
if (wav->cues) {
|
|
GST_WARNING_OBJECT (wav, "found another cue's");
|
|
return TRUE;
|
|
}
|
|
|
|
ncues = GST_READ_UINT32_LE (data);
|
|
|
|
if (size < 4 + ncues * 24) {
|
|
GST_WARNING_OBJECT (wav, "broken file %d %d", size, ncues);
|
|
return FALSE;
|
|
}
|
|
|
|
/* parse data */
|
|
data += 4;
|
|
for (i = 0; i < ncues; i++) {
|
|
cue = g_new0 (GstWavParseCue, 1);
|
|
cue->id = GST_READ_UINT32_LE (data);
|
|
cue->position = GST_READ_UINT32_LE (data + 4);
|
|
cue->data_chunk_id = GST_READ_UINT32_LE (data + 8);
|
|
cue->chunk_start = GST_READ_UINT32_LE (data + 12);
|
|
cue->block_start = GST_READ_UINT32_LE (data + 16);
|
|
cue->sample_offset = GST_READ_UINT32_LE (data + 20);
|
|
cues = g_list_append (cues, cue);
|
|
data += 24;
|
|
}
|
|
|
|
wav->cues = cues;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* gst_wavparse_labl_chunk:
|
|
* @wav GstWavParse object
|
|
* @data holder for data
|
|
* @size holder for data size
|
|
*
|
|
* Parse labl from @data to wav->labls.
|
|
*
|
|
* Returns: %TRUE when labl chunk is available
|
|
*/
|
|
static gboolean
|
|
gst_wavparse_labl_chunk (GstWavParse * wav, const guint8 * data, guint32 size)
|
|
{
|
|
GstWavParseLabl *labl;
|
|
|
|
if (size < 5)
|
|
return FALSE;
|
|
|
|
labl = g_new0 (GstWavParseLabl, 1);
|
|
|
|
/* parse data */
|
|
labl->cue_point_id = GST_READ_UINT32_LE (data);
|
|
labl->text = g_strndup ((const gchar *) data + 4, size - 4);
|
|
|
|
wav->labls = g_list_append (wav->labls, labl);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* gst_wavparse_note_chunk:
|
|
* @wav GstWavParse object
|
|
* @data holder for data
|
|
* @size holder for data size
|
|
*
|
|
* Parse note from @data to wav->notes.
|
|
*
|
|
* Returns: %TRUE when note chunk is available
|
|
*/
|
|
static gboolean
|
|
gst_wavparse_note_chunk (GstWavParse * wav, const guint8 * data, guint32 size)
|
|
{
|
|
GstWavParseNote *note;
|
|
|
|
if (size < 5)
|
|
return FALSE;
|
|
|
|
note = g_new0 (GstWavParseNote, 1);
|
|
|
|
/* parse data */
|
|
note->cue_point_id = GST_READ_UINT32_LE (data);
|
|
note->text = g_strndup ((const gchar *) data + 4, size - 4);
|
|
|
|
wav->notes = g_list_append (wav->notes, note);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* gst_wavparse_smpl_chunk:
|
|
* @wav GstWavParse object
|
|
* @data holder for data
|
|
* @size holder for data size
|
|
*
|
|
* Parse smpl chunk from @data.
|
|
*
|
|
* Returns: %TRUE when cue chunk is available
|
|
*/
|
|
static gboolean
|
|
gst_wavparse_smpl_chunk (GstWavParse * wav, const guint8 * data, guint32 size)
|
|
{
|
|
guint32 note_number;
|
|
|
|
/*
|
|
manufacturer_id = GST_READ_UINT32_LE (data);
|
|
product_id = GST_READ_UINT32_LE (data + 4);
|
|
sample_period = GST_READ_UINT32_LE (data + 8);
|
|
*/
|
|
note_number = GST_READ_UINT32_LE (data + 12);
|
|
/*
|
|
pitch_fraction = GST_READ_UINT32_LE (data + 16);
|
|
SMPTE_format = GST_READ_UINT32_LE (data + 20);
|
|
SMPTE_offset = GST_READ_UINT32_LE (data + 24);
|
|
num_sample_loops = GST_READ_UINT32_LE (data + 28);
|
|
List of Sample Loops, 24 bytes each
|
|
*/
|
|
|
|
if (!wav->tags)
|
|
wav->tags = gst_tag_list_new_empty ();
|
|
gst_tag_list_add (wav->tags, GST_TAG_MERGE_REPLACE,
|
|
GST_TAG_MIDI_BASE_NOTE, (guint) note_number, NULL);
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* gst_wavparse_adtl_chunk:
|
|
* @wav GstWavParse object
|
|
* @data holder for data
|
|
* @size holder for data size
|
|
*
|
|
* Parse adtl from @data.
|
|
*
|
|
* Returns: %TRUE when adtl chunk is available
|
|
*/
|
|
static gboolean
|
|
gst_wavparse_adtl_chunk (GstWavParse * wav, const guint8 * data, guint32 size)
|
|
{
|
|
guint32 ltag, lsize, offset = 0;
|
|
|
|
while (size >= 8) {
|
|
ltag = GST_READ_UINT32_LE (data + offset);
|
|
lsize = GST_READ_UINT32_LE (data + offset + 4);
|
|
|
|
if (lsize > (G_MAXUINT - 8) || lsize + 8 > size) {
|
|
GST_WARNING_OBJECT (wav, "Invalid adtl size: %u + 8 > %u", lsize, size);
|
|
return FALSE;
|
|
}
|
|
|
|
switch (ltag) {
|
|
case GST_RIFF_TAG_labl:
|
|
gst_wavparse_labl_chunk (wav, data + offset + 8, lsize);
|
|
break;
|
|
case GST_RIFF_TAG_note:
|
|
gst_wavparse_note_chunk (wav, data + offset + 8, lsize);
|
|
break;
|
|
default:
|
|
GST_WARNING_OBJECT (wav, "Unknowm adtl %" GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (ltag));
|
|
GST_MEMDUMP_OBJECT (wav, "Unknowm adtl", &data[offset], lsize);
|
|
break;
|
|
}
|
|
offset += 8 + GST_ROUND_UP_2 (lsize);
|
|
size -= 8 + GST_ROUND_UP_2 (lsize);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstTagList *
|
|
gst_wavparse_get_tags_toc_entry (GstToc * toc, gchar * id)
|
|
{
|
|
GstTagList *tags = NULL;
|
|
GstTocEntry *entry = NULL;
|
|
|
|
entry = gst_toc_find_entry (toc, id);
|
|
if (entry != NULL) {
|
|
tags = gst_toc_entry_get_tags (entry);
|
|
if (tags == NULL) {
|
|
tags = gst_tag_list_new_empty ();
|
|
gst_toc_entry_set_tags (entry, tags);
|
|
}
|
|
}
|
|
|
|
return tags;
|
|
}
|
|
|
|
/*
|
|
* gst_wavparse_create_toc:
|
|
* @wav GstWavParse object
|
|
*
|
|
* Create TOC from wav->cues and wav->labls.
|
|
*/
|
|
static gboolean
|
|
gst_wavparse_create_toc (GstWavParse * wav)
|
|
{
|
|
gint64 start, stop;
|
|
gchar *id;
|
|
GList *list;
|
|
GstWavParseCue *cue;
|
|
GstWavParseLabl *labl;
|
|
GstWavParseNote *note;
|
|
GstTagList *tags;
|
|
GstToc *toc;
|
|
GstTocEntry *entry = NULL, *cur_subentry = NULL, *prev_subentry = NULL;
|
|
|
|
GST_OBJECT_LOCK (wav);
|
|
if (wav->toc) {
|
|
GST_OBJECT_UNLOCK (wav);
|
|
GST_WARNING_OBJECT (wav, "found another TOC");
|
|
return FALSE;
|
|
}
|
|
|
|
if (!wav->cues) {
|
|
GST_OBJECT_UNLOCK (wav);
|
|
return TRUE;
|
|
}
|
|
|
|
/* FIXME: send CURRENT scope toc too */
|
|
toc = gst_toc_new (GST_TOC_SCOPE_GLOBAL);
|
|
|
|
/* add cue edition */
|
|
entry = gst_toc_entry_new (GST_TOC_ENTRY_TYPE_EDITION, "cue");
|
|
gst_toc_entry_set_start_stop_times (entry, 0, wav->duration);
|
|
gst_toc_append_entry (toc, entry);
|
|
|
|
/* add tracks in cue edition */
|
|
list = wav->cues;
|
|
while (list) {
|
|
cue = list->data;
|
|
prev_subentry = cur_subentry;
|
|
/* previous track stop time = current track start time */
|
|
if (prev_subentry != NULL) {
|
|
gst_toc_entry_get_start_stop_times (prev_subentry, &start, NULL);
|
|
stop = gst_util_uint64_scale_round (cue->position, GST_SECOND, wav->rate);
|
|
gst_toc_entry_set_start_stop_times (prev_subentry, start, stop);
|
|
}
|
|
id = g_strdup_printf ("%08x", cue->id);
|
|
cur_subentry = gst_toc_entry_new (GST_TOC_ENTRY_TYPE_TRACK, id);
|
|
g_free (id);
|
|
start = gst_util_uint64_scale_round (cue->position, GST_SECOND, wav->rate);
|
|
stop = wav->duration;
|
|
gst_toc_entry_set_start_stop_times (cur_subentry, start, stop);
|
|
gst_toc_entry_append_sub_entry (entry, cur_subentry);
|
|
list = g_list_next (list);
|
|
}
|
|
|
|
/* add tags in tracks */
|
|
list = wav->labls;
|
|
while (list) {
|
|
labl = list->data;
|
|
id = g_strdup_printf ("%08x", labl->cue_point_id);
|
|
tags = gst_wavparse_get_tags_toc_entry (toc, id);
|
|
g_free (id);
|
|
if (tags != NULL) {
|
|
gst_tag_list_add (tags, GST_TAG_MERGE_APPEND, GST_TAG_TITLE, labl->text,
|
|
NULL);
|
|
}
|
|
list = g_list_next (list);
|
|
}
|
|
list = wav->notes;
|
|
while (list) {
|
|
note = list->data;
|
|
id = g_strdup_printf ("%08x", note->cue_point_id);
|
|
tags = gst_wavparse_get_tags_toc_entry (toc, id);
|
|
g_free (id);
|
|
if (tags != NULL) {
|
|
gst_tag_list_add (tags, GST_TAG_MERGE_PREPEND, GST_TAG_COMMENT,
|
|
note->text, NULL);
|
|
}
|
|
list = g_list_next (list);
|
|
}
|
|
|
|
/* send data as TOC */
|
|
wav->toc = toc;
|
|
|
|
/* send TOC event */
|
|
if (wav->toc) {
|
|
GST_OBJECT_UNLOCK (wav);
|
|
gst_pad_push_event (wav->srcpad, gst_event_new_toc (wav->toc, FALSE));
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define MAX_BUFFER_SIZE 4096
|
|
|
|
static gboolean
|
|
parse_ds64 (GstWavParse * wav, GstBuffer * buf)
|
|
{
|
|
GstMapInfo map;
|
|
guint32 dataSizeLow, dataSizeHigh;
|
|
guint32 sampleCountLow, sampleCountHigh;
|
|
|
|
gst_buffer_map (buf, &map, GST_MAP_READ);
|
|
dataSizeLow = GST_READ_UINT32_LE (map.data + 2 * 4);
|
|
dataSizeHigh = GST_READ_UINT32_LE (map.data + 3 * 4);
|
|
sampleCountLow = GST_READ_UINT32_LE (map.data + 4 * 4);
|
|
sampleCountHigh = GST_READ_UINT32_LE (map.data + 5 * 4);
|
|
gst_buffer_unmap (buf, &map);
|
|
if (dataSizeHigh != 0xFFFFFFFF && dataSizeLow != 0xFFFFFFFF) {
|
|
wav->datasize = ((guint64) dataSizeHigh << 32) | dataSizeLow;
|
|
}
|
|
if (sampleCountHigh != 0xFFFFFFFF && sampleCountLow != 0xFFFFFFFF) {
|
|
wav->fact = ((guint64) sampleCountHigh << 32) | sampleCountLow;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (wav, "Got 'ds64' TAG, datasize : %" G_GINT64_FORMAT
|
|
" fact: %" G_GINT64_FORMAT, wav->datasize, wav->fact);
|
|
return TRUE;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_wavparse_stream_headers (GstWavParse * wav)
|
|
{
|
|
GstFlowReturn res = GST_FLOW_OK;
|
|
GstBuffer *buf = NULL;
|
|
gst_riff_strf_auds *header = NULL;
|
|
guint32 tag, size;
|
|
gboolean gotdata = FALSE;
|
|
GstCaps *caps = NULL;
|
|
gchar *codec_name = NULL;
|
|
gint64 upstream_size = 0;
|
|
GstStructure *s;
|
|
|
|
/* search for "_fmt" chunk, which must be before "data" */
|
|
while (!wav->got_fmt) {
|
|
GstBuffer *extra;
|
|
|
|
if (wav->streaming) {
|
|
if (!gst_wavparse_peek_chunk (wav, &tag, &size))
|
|
return res;
|
|
|
|
gst_adapter_flush (wav->adapter, 8);
|
|
wav->offset += 8;
|
|
|
|
if (size) {
|
|
buf = gst_adapter_take_buffer (wav->adapter, size);
|
|
if (size & 1)
|
|
gst_adapter_flush (wav->adapter, 1);
|
|
wav->offset += GST_ROUND_UP_2 (size);
|
|
} else {
|
|
buf = gst_buffer_new ();
|
|
}
|
|
} else {
|
|
if ((res = gst_riff_read_chunk (GST_ELEMENT_CAST (wav), wav->sinkpad,
|
|
&wav->offset, &tag, &buf)) != GST_FLOW_OK)
|
|
return res;
|
|
}
|
|
|
|
if (tag == GST_RS64_TAG_DS64) {
|
|
if (!parse_ds64 (wav, buf))
|
|
goto fail;
|
|
else
|
|
continue;
|
|
}
|
|
|
|
if (tag != GST_RIFF_TAG_fmt) {
|
|
GST_DEBUG_OBJECT (wav, "skipping %" GST_FOURCC_FORMAT " chunk",
|
|
GST_FOURCC_ARGS (tag));
|
|
gst_buffer_unref (buf);
|
|
buf = NULL;
|
|
continue;
|
|
}
|
|
|
|
if (!(gst_riff_parse_strf_auds (GST_ELEMENT_CAST (wav), buf, &header,
|
|
&extra)))
|
|
goto parse_header_error;
|
|
|
|
buf = NULL; /* parse_strf_auds() took ownership of buffer */
|
|
|
|
/* do sanity checks of header fields */
|
|
if (header->channels == 0)
|
|
goto no_channels;
|
|
if (header->rate == 0)
|
|
goto no_rate;
|
|
|
|
GST_DEBUG_OBJECT (wav, "creating the caps");
|
|
|
|
/* Note: gst_riff_create_audio_caps might need to fix values in
|
|
* the header header depending on the format, so call it first */
|
|
/* FIXME: Need to handle the channel reorder map */
|
|
caps = gst_riff_create_audio_caps (header->format, NULL, header, extra,
|
|
NULL, &codec_name, NULL);
|
|
|
|
if (extra)
|
|
gst_buffer_unref (extra);
|
|
|
|
if (!caps)
|
|
goto unknown_format;
|
|
|
|
/* If we got raw audio from upstream, we remove the codec_data field,
|
|
* which may have been added if the wav header included an extended
|
|
* chunk. We want to keep it for non raw audio.
|
|
*/
|
|
s = gst_caps_get_structure (caps, 0);
|
|
if (s && gst_structure_has_name (s, "audio/x-raw")) {
|
|
gst_structure_remove_field (s, "codec_data");
|
|
}
|
|
|
|
/* do more sanity checks of header fields
|
|
* (these can be sanitized by gst_riff_create_audio_caps()
|
|
*/
|
|
wav->format = header->format;
|
|
wav->rate = header->rate;
|
|
wav->channels = header->channels;
|
|
wav->blockalign = header->blockalign;
|
|
wav->depth = header->bits_per_sample;
|
|
wav->av_bps = header->av_bps;
|
|
wav->vbr = FALSE;
|
|
|
|
g_free (header);
|
|
header = NULL;
|
|
|
|
/* do format specific handling */
|
|
switch (wav->format) {
|
|
case GST_RIFF_WAVE_FORMAT_MPEGL12:
|
|
case GST_RIFF_WAVE_FORMAT_MPEGL3:
|
|
{
|
|
/* Note: workaround for mp2/mp3 embedded in wav, that relies on the
|
|
* bitrate inside the mpeg stream */
|
|
GST_INFO ("resetting bps from %u to 0 for mp2/3", wav->av_bps);
|
|
wav->bps = 0;
|
|
break;
|
|
}
|
|
case GST_RIFF_WAVE_FORMAT_PCM:
|
|
if (wav->blockalign > wav->channels * ((wav->depth + 7) / 8))
|
|
goto invalid_blockalign;
|
|
/* fall through */
|
|
default:
|
|
if (wav->av_bps > wav->blockalign * wav->rate)
|
|
goto invalid_bps;
|
|
/* use the configured bps */
|
|
wav->bps = wav->av_bps;
|
|
break;
|
|
}
|
|
|
|
wav->width = (wav->blockalign * 8) / wav->channels;
|
|
wav->bytes_per_sample = wav->channels * wav->width / 8;
|
|
|
|
if (wav->bytes_per_sample <= 0)
|
|
goto no_bytes_per_sample;
|
|
|
|
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, "av_bps = %u", (guint) wav->av_bps);
|
|
GST_DEBUG_OBJECT (wav, "frequency = %u", (guint) wav->rate);
|
|
GST_DEBUG_OBJECT (wav, "channels = %u", (guint) wav->channels);
|
|
GST_DEBUG_OBJECT (wav, "bytes_per_sample = %u", wav->bytes_per_sample);
|
|
|
|
/* bps can be 0 when we don't have a valid bitrate (mostly for compressed
|
|
* formats). This will make the element output a BYTE format segment and
|
|
* will not timestamp the outgoing buffers.
|
|
*/
|
|
GST_DEBUG_OBJECT (wav, "bps = %u", (guint) wav->bps);
|
|
|
|
GST_DEBUG_OBJECT (wav, "caps = %" GST_PTR_FORMAT, caps);
|
|
|
|
/* 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 (wav->tags == NULL)
|
|
wav->tags = gst_tag_list_new_empty ();
|
|
|
|
{
|
|
GstCaps *templ_caps = gst_pad_get_pad_template_caps (wav->sinkpad);
|
|
gst_pb_utils_add_codec_description_to_tag_list (wav->tags,
|
|
GST_TAG_CONTAINER_FORMAT, templ_caps);
|
|
gst_caps_unref (templ_caps);
|
|
}
|
|
|
|
/* If bps is nonzero, then we do have a valid bitrate that can be
|
|
* announced in a tag list. */
|
|
if (wav->bps) {
|
|
guint bitrate = wav->bps * 8;
|
|
gst_tag_list_add (wav->tags, GST_TAG_MERGE_REPLACE,
|
|
GST_TAG_BITRATE, bitrate, NULL);
|
|
}
|
|
|
|
if (codec_name) {
|
|
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_pad_peer_query_duration (wav->sinkpad, GST_FORMAT_BYTES, &upstream_size);
|
|
GST_DEBUG_OBJECT (wav, "upstream size %" G_GUINT64_FORMAT, upstream_size);
|
|
|
|
/* loop headers until we get data */
|
|
while (!gotdata) {
|
|
if (wav->streaming) {
|
|
if (!gst_wavparse_peek_chunk_info (wav, &tag, &size))
|
|
goto exit;
|
|
} else {
|
|
GstMapInfo map;
|
|
|
|
buf = NULL;
|
|
if ((res =
|
|
gst_pad_pull_range (wav->sinkpad, wav->offset, 8,
|
|
&buf)) != GST_FLOW_OK)
|
|
goto header_read_error;
|
|
gst_buffer_map (buf, &map, GST_MAP_READ);
|
|
tag = GST_READ_UINT32_LE (map.data);
|
|
size = GST_READ_UINT32_LE (map.data + 4);
|
|
gst_buffer_unmap (buf, &map);
|
|
}
|
|
|
|
GST_INFO_OBJECT (wav,
|
|
"Got TAG: %" GST_FOURCC_FORMAT ", offset %" G_GUINT64_FORMAT ", size %"
|
|
G_GUINT32_FORMAT, GST_FOURCC_ARGS (tag), wav->offset, size);
|
|
|
|
/* Maximum valid size is INT_MAX */
|
|
if (size & 0x80000000) {
|
|
GST_WARNING_OBJECT (wav, "Invalid size, clipping to 0x7fffffff");
|
|
size = 0x7fffffff;
|
|
}
|
|
|
|
/* Clip to upstream size if known */
|
|
if (upstream_size > 0 && size + wav->offset > upstream_size) {
|
|
GST_WARNING_OBJECT (wav, "Clipping chunk size to file size");
|
|
g_assert (upstream_size >= wav->offset);
|
|
size = upstream_size - wav->offset;
|
|
}
|
|
|
|
/* 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
|
|
*/
|
|
switch (tag) {
|
|
case GST_RIFF_TAG_data:{
|
|
guint64 size64;
|
|
|
|
GST_DEBUG_OBJECT (wav, "Got 'data' TAG, size : %u", size);
|
|
size64 = size;
|
|
if (wav->ignore_length) {
|
|
GST_DEBUG_OBJECT (wav, "Ignoring length");
|
|
size64 = 0;
|
|
}
|
|
if (wav->streaming) {
|
|
gst_adapter_flush (wav->adapter, 8);
|
|
gotdata = TRUE;
|
|
} else {
|
|
gst_buffer_unref (buf);
|
|
}
|
|
wav->offset += 8;
|
|
wav->datastart = wav->offset;
|
|
/* use size from ds64 chunk if available */
|
|
if (size64 == -1 && wav->datasize > 0) {
|
|
GST_DEBUG_OBJECT (wav, "Using ds64 datasize");
|
|
size64 = wav->datasize;
|
|
}
|
|
wav->chunk_size = size64;
|
|
|
|
/* If size is zero, then the data chunk probably actually extends to
|
|
the end of the file */
|
|
if (size64 == 0 && upstream_size) {
|
|
size64 = upstream_size - wav->datastart;
|
|
}
|
|
/* Or the file might be truncated */
|
|
else if (upstream_size) {
|
|
size64 = MIN (size64, (upstream_size - wav->datastart));
|
|
}
|
|
wav->datasize = size64;
|
|
wav->dataleft = size64;
|
|
wav->end_offset = size64 + wav->datastart;
|
|
if (!wav->streaming) {
|
|
/* We will continue parsing tags 'till end */
|
|
wav->offset += size64;
|
|
}
|
|
GST_DEBUG_OBJECT (wav, "datasize = %" G_GUINT64_FORMAT, size64);
|
|
break;
|
|
}
|
|
case GST_RIFF_TAG_fact:{
|
|
if (wav->fact == 0 &&
|
|
wav->format != GST_RIFF_WAVE_FORMAT_MPEGL12 &&
|
|
wav->format != GST_RIFF_WAVE_FORMAT_MPEGL3) {
|
|
const guint data_size = 4;
|
|
|
|
GST_INFO_OBJECT (wav, "Have fact chunk");
|
|
if (size < data_size) {
|
|
if (!gst_waveparse_ignore_chunk (wav, buf, tag, size)) {
|
|
/* need more data */
|
|
goto exit;
|
|
}
|
|
GST_DEBUG_OBJECT (wav, "need %u, available %u; ignoring chunk",
|
|
data_size, size);
|
|
break;
|
|
}
|
|
/* number of samples (for compressed formats) */
|
|
if (wav->streaming) {
|
|
const guint8 *data = NULL;
|
|
|
|
if (!gst_wavparse_peek_chunk (wav, &tag, &size)) {
|
|
goto exit;
|
|
}
|
|
gst_adapter_flush (wav->adapter, 8);
|
|
data = gst_adapter_map (wav->adapter, data_size);
|
|
wav->fact = GST_READ_UINT32_LE (data);
|
|
gst_adapter_unmap (wav->adapter);
|
|
gst_adapter_flush (wav->adapter, GST_ROUND_UP_2 (size));
|
|
} else {
|
|
gst_buffer_unref (buf);
|
|
buf = NULL;
|
|
if ((res =
|
|
gst_pad_pull_range (wav->sinkpad, wav->offset + 8,
|
|
data_size, &buf)) != GST_FLOW_OK)
|
|
goto header_read_error;
|
|
gst_buffer_extract (buf, 0, &wav->fact, 4);
|
|
wav->fact = GUINT32_FROM_LE (wav->fact);
|
|
gst_buffer_unref (buf);
|
|
}
|
|
GST_DEBUG_OBJECT (wav, "have fact %" G_GUINT64_FORMAT, wav->fact);
|
|
wav->offset += 8 + GST_ROUND_UP_2 (size);
|
|
break;
|
|
} else {
|
|
if (!gst_waveparse_ignore_chunk (wav, buf, tag, size)) {
|
|
/* need more data */
|
|
goto exit;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case GST_RIFF_TAG_acid:{
|
|
const gst_riff_acid *acid = NULL;
|
|
const guint data_size = sizeof (gst_riff_acid);
|
|
gfloat tempo;
|
|
|
|
GST_INFO_OBJECT (wav, "Have acid chunk");
|
|
if (size < data_size) {
|
|
if (!gst_waveparse_ignore_chunk (wav, buf, tag, size)) {
|
|
/* need more data */
|
|
goto exit;
|
|
}
|
|
GST_DEBUG_OBJECT (wav, "need %u, available %u; ignoring chunk",
|
|
data_size, size);
|
|
break;
|
|
}
|
|
if (wav->streaming) {
|
|
if (!gst_wavparse_peek_chunk (wav, &tag, &size)) {
|
|
goto exit;
|
|
}
|
|
gst_adapter_flush (wav->adapter, 8);
|
|
acid = (const gst_riff_acid *) gst_adapter_map (wav->adapter,
|
|
data_size);
|
|
tempo = acid->tempo;
|
|
gst_adapter_unmap (wav->adapter);
|
|
} else {
|
|
GstMapInfo map;
|
|
gst_buffer_unref (buf);
|
|
buf = NULL;
|
|
if ((res =
|
|
gst_pad_pull_range (wav->sinkpad, wav->offset + 8,
|
|
size, &buf)) != GST_FLOW_OK)
|
|
goto header_read_error;
|
|
gst_buffer_map (buf, &map, GST_MAP_READ);
|
|
acid = (const gst_riff_acid *) map.data;
|
|
tempo = acid->tempo;
|
|
gst_buffer_unmap (buf, &map);
|
|
}
|
|
/* send data as tags */
|
|
if (!wav->tags)
|
|
wav->tags = gst_tag_list_new_empty ();
|
|
gst_tag_list_add (wav->tags, GST_TAG_MERGE_REPLACE,
|
|
GST_TAG_BEATS_PER_MINUTE, tempo, NULL);
|
|
|
|
size = GST_ROUND_UP_2 (size);
|
|
if (wav->streaming) {
|
|
gst_adapter_flush (wav->adapter, size);
|
|
} else {
|
|
gst_buffer_unref (buf);
|
|
}
|
|
wav->offset += 8 + size;
|
|
break;
|
|
}
|
|
/* FIXME: all list tags after data are ignored in streaming mode */
|
|
case GST_RIFF_TAG_LIST:{
|
|
guint32 ltag;
|
|
|
|
if (wav->streaming) {
|
|
const guint8 *data = NULL;
|
|
|
|
if (gst_adapter_available (wav->adapter) < 12) {
|
|
goto exit;
|
|
}
|
|
data = gst_adapter_map (wav->adapter, 12);
|
|
ltag = GST_READ_UINT32_LE (data + 8);
|
|
gst_adapter_unmap (wav->adapter);
|
|
} else {
|
|
gst_buffer_unref (buf);
|
|
buf = NULL;
|
|
if ((res =
|
|
gst_pad_pull_range (wav->sinkpad, wav->offset, 12,
|
|
&buf)) != GST_FLOW_OK)
|
|
goto header_read_error;
|
|
gst_buffer_extract (buf, 8, <ag, 4);
|
|
ltag = GUINT32_FROM_LE (ltag);
|
|
}
|
|
switch (ltag) {
|
|
case GST_RIFF_LIST_INFO:{
|
|
const gint data_size = size - 4;
|
|
GstTagList *new;
|
|
|
|
GST_INFO_OBJECT (wav, "Have LIST chunk INFO size %u", data_size);
|
|
if (wav->streaming) {
|
|
if (!gst_wavparse_peek_chunk (wav, &tag, &size)) {
|
|
goto exit;
|
|
}
|
|
gst_adapter_flush (wav->adapter, 12);
|
|
wav->offset += 12;
|
|
if (data_size > 0) {
|
|
buf = gst_adapter_take_buffer (wav->adapter, data_size);
|
|
if (data_size & 1)
|
|
gst_adapter_flush (wav->adapter, 1);
|
|
}
|
|
} else {
|
|
wav->offset += 12;
|
|
gst_buffer_unref (buf);
|
|
buf = NULL;
|
|
if (data_size > 0) {
|
|
if ((res =
|
|
gst_pad_pull_range (wav->sinkpad, wav->offset,
|
|
data_size, &buf)) != GST_FLOW_OK)
|
|
goto header_read_error;
|
|
}
|
|
}
|
|
if (data_size > 0) {
|
|
/* parse tags */
|
|
gst_riff_parse_info (GST_ELEMENT (wav), buf, &new);
|
|
if (new) {
|
|
GstTagList *old = wav->tags;
|
|
wav->tags =
|
|
gst_tag_list_merge (old, new, GST_TAG_MERGE_REPLACE);
|
|
if (old)
|
|
gst_tag_list_unref (old);
|
|
gst_tag_list_unref (new);
|
|
}
|
|
gst_buffer_unref (buf);
|
|
wav->offset += GST_ROUND_UP_2 (data_size);
|
|
}
|
|
break;
|
|
}
|
|
case GST_RIFF_LIST_adtl:{
|
|
const gint data_size = size - 4;
|
|
|
|
GST_INFO_OBJECT (wav, "Have 'adtl' LIST, size %u", data_size);
|
|
if (wav->streaming) {
|
|
const guint8 *data = NULL;
|
|
|
|
gst_adapter_flush (wav->adapter, 12);
|
|
wav->offset += 12;
|
|
data = gst_adapter_map (wav->adapter, data_size);
|
|
gst_wavparse_adtl_chunk (wav, data, data_size);
|
|
gst_adapter_unmap (wav->adapter);
|
|
} else {
|
|
GstMapInfo map;
|
|
|
|
gst_buffer_unref (buf);
|
|
buf = NULL;
|
|
wav->offset += 12;
|
|
if ((res =
|
|
gst_pad_pull_range (wav->sinkpad, wav->offset,
|
|
data_size, &buf)) != GST_FLOW_OK)
|
|
goto header_read_error;
|
|
gst_buffer_map (buf, &map, GST_MAP_READ);
|
|
gst_wavparse_adtl_chunk (wav, (const guint8 *) map.data,
|
|
data_size);
|
|
gst_buffer_unmap (buf, &map);
|
|
gst_buffer_unref (buf);
|
|
}
|
|
wav->offset += GST_ROUND_UP_2 (data_size);
|
|
break;
|
|
}
|
|
default:
|
|
GST_WARNING_OBJECT (wav, "Ignoring LIST chunk %" GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (ltag));
|
|
if (!gst_waveparse_ignore_chunk (wav, buf, tag, size))
|
|
/* need more data */
|
|
goto exit;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case GST_RIFF_TAG_cue:{
|
|
const guint data_size = size;
|
|
|
|
GST_DEBUG_OBJECT (wav, "Have 'cue' TAG, size : %u", data_size);
|
|
if (wav->streaming) {
|
|
const guint8 *data = NULL;
|
|
|
|
if (!gst_wavparse_peek_chunk (wav, &tag, &size)) {
|
|
goto exit;
|
|
}
|
|
gst_adapter_flush (wav->adapter, 8);
|
|
wav->offset += 8;
|
|
data = gst_adapter_map (wav->adapter, data_size);
|
|
if (!gst_wavparse_cue_chunk (wav, data, data_size)) {
|
|
goto header_read_error;
|
|
}
|
|
gst_adapter_unmap (wav->adapter);
|
|
} else {
|
|
GstMapInfo map;
|
|
|
|
wav->offset += 8;
|
|
gst_buffer_unref (buf);
|
|
buf = NULL;
|
|
if ((res =
|
|
gst_pad_pull_range (wav->sinkpad, wav->offset,
|
|
data_size, &buf)) != GST_FLOW_OK)
|
|
goto header_read_error;
|
|
gst_buffer_map (buf, &map, GST_MAP_READ);
|
|
if (!gst_wavparse_cue_chunk (wav, (const guint8 *) map.data,
|
|
data_size)) {
|
|
goto header_read_error;
|
|
}
|
|
gst_buffer_unmap (buf, &map);
|
|
}
|
|
size = GST_ROUND_UP_2 (size);
|
|
if (wav->streaming) {
|
|
gst_adapter_flush (wav->adapter, size);
|
|
} else {
|
|
gst_buffer_unref (buf);
|
|
}
|
|
size = GST_ROUND_UP_2 (size);
|
|
wav->offset += size;
|
|
break;
|
|
}
|
|
case GST_RIFF_TAG_smpl:{
|
|
const gint data_size = size;
|
|
|
|
GST_DEBUG_OBJECT (wav, "Have 'smpl' TAG, size : %u", data_size);
|
|
if (wav->streaming) {
|
|
const guint8 *data = NULL;
|
|
|
|
if (!gst_wavparse_peek_chunk (wav, &tag, &size)) {
|
|
goto exit;
|
|
}
|
|
gst_adapter_flush (wav->adapter, 8);
|
|
wav->offset += 8;
|
|
data = gst_adapter_map (wav->adapter, data_size);
|
|
if (!gst_wavparse_smpl_chunk (wav, data, data_size)) {
|
|
goto header_read_error;
|
|
}
|
|
gst_adapter_unmap (wav->adapter);
|
|
} else {
|
|
GstMapInfo map;
|
|
|
|
wav->offset += 8;
|
|
gst_buffer_unref (buf);
|
|
buf = NULL;
|
|
if ((res =
|
|
gst_pad_pull_range (wav->sinkpad, wav->offset,
|
|
data_size, &buf)) != GST_FLOW_OK)
|
|
goto header_read_error;
|
|
gst_buffer_map (buf, &map, GST_MAP_READ);
|
|
if (!gst_wavparse_smpl_chunk (wav, (const guint8 *) map.data,
|
|
data_size)) {
|
|
goto header_read_error;
|
|
}
|
|
gst_buffer_unmap (buf, &map);
|
|
}
|
|
size = GST_ROUND_UP_2 (size);
|
|
if (wav->streaming) {
|
|
gst_adapter_flush (wav->adapter, size);
|
|
} else {
|
|
gst_buffer_unref (buf);
|
|
}
|
|
size = GST_ROUND_UP_2 (size);
|
|
wav->offset += size;
|
|
break;
|
|
}
|
|
default:
|
|
GST_WARNING_OBJECT (wav, "Ignoring chunk %" GST_FOURCC_FORMAT,
|
|
GST_FOURCC_ARGS (tag));
|
|
if (!gst_waveparse_ignore_chunk (wav, buf, tag, size))
|
|
/* need more data */
|
|
goto exit;
|
|
break;
|
|
}
|
|
|
|
if (upstream_size && (wav->offset >= upstream_size)) {
|
|
/* Now we are gone through the whole file */
|
|
gotdata = TRUE;
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (wav, "Finished parsing headers");
|
|
|
|
if (wav->bps <= 0 && wav->fact) {
|
|
#if 0
|
|
/* not a good idea, as for embedded mp2/mp3 we set bps to 0 earlier */
|
|
wav->bps =
|
|
(guint32) gst_util_uint64_scale ((guint64) wav->rate, wav->datasize,
|
|
(guint64) wav->fact);
|
|
GST_INFO_OBJECT (wav, "calculated bps : %u, enabling VBR", wav->bps);
|
|
#endif
|
|
wav->vbr = TRUE;
|
|
}
|
|
|
|
if (gst_wavparse_calculate_duration (wav)) {
|
|
gst_segment_init (&wav->segment, GST_FORMAT_TIME);
|
|
if (!wav->ignore_length)
|
|
wav->segment.duration = wav->duration;
|
|
if (!wav->toc)
|
|
gst_wavparse_create_toc (wav);
|
|
} else {
|
|
/* no bitrate, let downstream peer do the math, we'll feed it bytes. */
|
|
gst_segment_init (&wav->segment, GST_FORMAT_BYTES);
|
|
if (!wav->ignore_length)
|
|
wav->segment.duration = wav->datasize;
|
|
}
|
|
|
|
/* now we have all the info to perform a pending seek if any, if no
|
|
* event, this will still do the right thing and it will also send
|
|
* the right newsegment event downstream. */
|
|
gst_wavparse_perform_seek (wav, wav->seek_event);
|
|
/* remove pending event */
|
|
gst_event_replace (&wav->seek_event, NULL);
|
|
|
|
/* we just started, we are discont */
|
|
wav->discont = TRUE;
|
|
|
|
wav->state = GST_WAVPARSE_DATA;
|
|
|
|
/* determine reasonable max buffer size,
|
|
* that is, buffers not too small either size or time wise
|
|
* so we do not end up with too many of them */
|
|
/* var abuse */
|
|
if (gst_wavparse_time_to_bytepos (wav, 40 * GST_MSECOND, &upstream_size))
|
|
wav->max_buf_size = upstream_size;
|
|
else
|
|
wav->max_buf_size = 0;
|
|
wav->max_buf_size = MAX (wav->max_buf_size, MAX_BUFFER_SIZE);
|
|
if (wav->blockalign > 0)
|
|
wav->max_buf_size -= (wav->max_buf_size % wav->blockalign);
|
|
|
|
GST_DEBUG_OBJECT (wav, "max buffer size %u", wav->max_buf_size);
|
|
|
|
return GST_FLOW_OK;
|
|
|
|
/* ERROR */
|
|
exit:
|
|
{
|
|
g_free (codec_name);
|
|
g_free (header);
|
|
if (caps)
|
|
gst_caps_unref (caps);
|
|
return res;
|
|
}
|
|
fail:
|
|
{
|
|
res = GST_FLOW_ERROR;
|
|
goto exit;
|
|
}
|
|
parse_header_error:
|
|
{
|
|
GST_ELEMENT_ERROR (wav, STREAM, DEMUX, (NULL),
|
|
("Couldn't parse audio header"));
|
|
goto fail;
|
|
}
|
|
no_channels:
|
|
{
|
|
GST_ELEMENT_ERROR (wav, STREAM, FAILED, (NULL),
|
|
("Stream claims to contain no channels - invalid data"));
|
|
goto fail;
|
|
}
|
|
no_rate:
|
|
{
|
|
GST_ELEMENT_ERROR (wav, STREAM, FAILED, (NULL),
|
|
("Stream with sample_rate == 0 - invalid data"));
|
|
goto fail;
|
|
}
|
|
invalid_blockalign:
|
|
{
|
|
GST_ELEMENT_ERROR (wav, STREAM, FAILED, (NULL),
|
|
("Stream claims blockalign = %u, which is more than %u - invalid data",
|
|
wav->blockalign, wav->channels * ((wav->depth + 7) / 8)));
|
|
goto fail;
|
|
}
|
|
invalid_bps:
|
|
{
|
|
GST_ELEMENT_ERROR (wav, STREAM, FAILED, (NULL),
|
|
("Stream claims av_bps = %u, which is more than %u - invalid data",
|
|
wav->av_bps, wav->blockalign * wav->rate));
|
|
goto fail;
|
|
}
|
|
no_bytes_per_sample:
|
|
{
|
|
GST_ELEMENT_ERROR (wav, STREAM, FAILED, (NULL),
|
|
("Could not calculate bytes per sample - invalid data"));
|
|
goto fail;
|
|
}
|
|
unknown_format:
|
|
{
|
|
GST_ELEMENT_ERROR (wav, STREAM, TYPE_NOT_FOUND, (NULL),
|
|
("No caps found for format 0x%x, %u channels, %u Hz",
|
|
wav->format, wav->channels, wav->rate));
|
|
goto fail;
|
|
}
|
|
header_read_error:
|
|
{
|
|
GST_ELEMENT_ERROR (wav, STREAM, DEMUX, (NULL),
|
|
("Couldn't read in header %d (%s)", res, gst_flow_get_name (res)));
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Read WAV file tag when streaming
|
|
*/
|
|
static GstFlowReturn
|
|
gst_wavparse_parse_stream_init (GstWavParse * wav)
|
|
{
|
|
if (gst_adapter_available (wav->adapter) >= 12) {
|
|
GstBuffer *tmp;
|
|
|
|
/* _take flushes the data */
|
|
tmp = gst_adapter_take_buffer (wav->adapter, 12);
|
|
|
|
GST_DEBUG ("Parsing wav header");
|
|
if (!gst_wavparse_parse_file_header (GST_ELEMENT_CAST (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
|
|
* >READY state. The only event of interest really is the seek
|
|
* event.
|
|
*
|
|
* In the READY state we can only store the event and try to
|
|
* respect it when going to PAUSED. We assume we are in the
|
|
* READY state when our parsing state != GST_WAVPARSE_DATA.
|
|
*
|
|
* When we are steaming, we can simply perform the seek right
|
|
* away.
|
|
*/
|
|
static gboolean
|
|
gst_wavparse_send_event (GstElement * element, GstEvent * event)
|
|
{
|
|
GstWavParse *wav = GST_WAVPARSE (element);
|
|
gboolean res = FALSE;
|
|
|
|
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) {
|
|
/* we can handle the seek directly when streaming data */
|
|
res = gst_wavparse_perform_seek (wav, event);
|
|
} else {
|
|
GST_DEBUG_OBJECT (wav, "queuing seek for later");
|
|
|
|
gst_event_replace (&wav->seek_event, event);
|
|
|
|
/* we always return true */
|
|
res = TRUE;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
gst_event_unref (event);
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_wavparse_have_dts_caps (const GstCaps * caps, GstTypeFindProbability prob)
|
|
{
|
|
GstStructure *s;
|
|
|
|
s = gst_caps_get_structure (caps, 0);
|
|
if (!gst_structure_has_name (s, "audio/x-dts"))
|
|
return FALSE;
|
|
/* typefind behavior for DTS:
|
|
* MAXIMUM: multiple frame syncs detected, certainly DTS
|
|
* LIKELY: single frame sync at offset 0. Maybe DTS?
|
|
* POSSIBLE: single frame sync, not at offset 0. Highly unlikely
|
|
* to be DTS. */
|
|
if (prob > GST_TYPE_FIND_LIKELY)
|
|
return TRUE;
|
|
if (prob <= GST_TYPE_FIND_POSSIBLE)
|
|
return FALSE;
|
|
/* for maybe, check for at least a valid-looking rate and channels */
|
|
if (!gst_structure_has_field (s, "channels"))
|
|
return FALSE;
|
|
/* and for extra assurance we could also check the rate from the DTS frame
|
|
* against the one in the wav header, but for now let's not do that */
|
|
return gst_structure_has_field (s, "rate");
|
|
}
|
|
|
|
static GstTagList *
|
|
gst_wavparse_get_upstream_tags (GstWavParse * wav, GstTagScope scope)
|
|
{
|
|
GstTagList *tags = NULL;
|
|
GstEvent *ev;
|
|
gint i;
|
|
|
|
i = 0;
|
|
while ((ev = gst_pad_get_sticky_event (wav->sinkpad, GST_EVENT_TAG, i++))) {
|
|
gst_event_parse_tag (ev, &tags);
|
|
if (tags != NULL && gst_tag_list_get_scope (tags) == scope) {
|
|
tags = gst_tag_list_copy (tags);
|
|
gst_tag_list_remove_tag (tags, GST_TAG_CONTAINER_FORMAT);
|
|
gst_event_unref (ev);
|
|
break;
|
|
}
|
|
tags = NULL;
|
|
gst_event_unref (ev);
|
|
}
|
|
return tags;
|
|
}
|
|
|
|
static void
|
|
gst_wavparse_add_src_pad (GstWavParse * wav, GstBuffer * buf)
|
|
{
|
|
GstStructure *s;
|
|
GstTagList *tags, *utags;
|
|
|
|
GST_DEBUG_OBJECT (wav, "adding src pad");
|
|
|
|
g_assert (wav->caps != NULL);
|
|
|
|
s = gst_caps_get_structure (wav->caps, 0);
|
|
if (s && gst_structure_has_name (s, "audio/x-raw") && buf != NULL
|
|
&& (GST_BUFFER_OFFSET (buf) == 0 || !GST_BUFFER_OFFSET_IS_VALID (buf))) {
|
|
GstTypeFindProbability prob;
|
|
GstCaps *tf_caps, *dts_caps;
|
|
|
|
dts_caps = gst_caps_from_string ("audio/x-dts");
|
|
tf_caps =
|
|
gst_type_find_helper_for_buffer_with_caps (GST_OBJECT (wav), buf,
|
|
dts_caps, &prob);
|
|
if (tf_caps != NULL) {
|
|
GST_LOG ("typefind caps = %" GST_PTR_FORMAT ", P=%d", tf_caps, prob);
|
|
if (gst_wavparse_have_dts_caps (tf_caps, prob)) {
|
|
GST_INFO_OBJECT (wav, "Found DTS marker in file marked as raw PCM");
|
|
gst_caps_unref (wav->caps);
|
|
wav->caps = tf_caps;
|
|
|
|
gst_tag_list_add (wav->tags, GST_TAG_MERGE_REPLACE,
|
|
GST_TAG_AUDIO_CODEC, "dts", NULL);
|
|
} else {
|
|
GST_DEBUG_OBJECT (wav, "found caps %" GST_PTR_FORMAT " for stream "
|
|
"marked as raw PCM audio, but ignoring for now", tf_caps);
|
|
gst_caps_unref (tf_caps);
|
|
}
|
|
}
|
|
gst_caps_unref (dts_caps);
|
|
}
|
|
|
|
gst_pad_set_caps (wav->srcpad, wav->caps);
|
|
|
|
if (wav->start_segment) {
|
|
GST_DEBUG_OBJECT (wav, "Send start segment event on newpad");
|
|
gst_pad_push_event (wav->srcpad, wav->start_segment);
|
|
wav->start_segment = NULL;
|
|
}
|
|
|
|
/* upstream tags, e.g. from id3/ape tag before the wav file; assume for now
|
|
* that there'll be only one scope/type of tag list from upstream, if any */
|
|
utags = gst_wavparse_get_upstream_tags (wav, GST_TAG_SCOPE_GLOBAL);
|
|
if (utags == NULL)
|
|
utags = gst_wavparse_get_upstream_tags (wav, GST_TAG_SCOPE_STREAM);
|
|
|
|
/* if there's a tag upstream it's probably been added to override the
|
|
* tags from inside the wav header, so keep upstream tags if in doubt */
|
|
tags = gst_tag_list_merge (utags, wav->tags, GST_TAG_MERGE_KEEP);
|
|
|
|
if (wav->tags != NULL) {
|
|
gst_tag_list_unref (wav->tags);
|
|
wav->tags = NULL;
|
|
}
|
|
|
|
if (utags != NULL)
|
|
gst_tag_list_unref (utags);
|
|
|
|
/* send tags downstream, if any */
|
|
if (tags != NULL)
|
|
gst_pad_push_event (wav->srcpad, gst_event_new_tag (tags));
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_wavparse_stream_data (GstWavParse * wav, gboolean flushing)
|
|
{
|
|
GstBuffer *buf = NULL;
|
|
GstFlowReturn res = GST_FLOW_OK;
|
|
guint64 desired, obtained;
|
|
GstClockTime timestamp, next_timestamp, duration;
|
|
guint64 pos, nextpos;
|
|
|
|
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);
|
|
|
|
if ((wav->dataleft == 0 || wav->dataleft < wav->blockalign)) {
|
|
/* In case chunk size is not declared in the beginning get size from the
|
|
* file size directly */
|
|
if (wav->chunk_size == 0) {
|
|
gint64 upstream_size = 0;
|
|
|
|
/* Get the size of the file */
|
|
if (!gst_pad_peer_query_duration (wav->sinkpad, GST_FORMAT_BYTES,
|
|
&upstream_size))
|
|
goto found_eos;
|
|
|
|
if (upstream_size < wav->offset + wav->datastart)
|
|
goto found_eos;
|
|
|
|
/* If file has updated since the beginning continue reading the file */
|
|
wav->dataleft = upstream_size - wav->offset - wav->datastart;
|
|
wav->end_offset = upstream_size;
|
|
|
|
/* Get the next n bytes and output them, if we can */
|
|
if (wav->dataleft == 0 || wav->dataleft < wav->blockalign)
|
|
goto found_eos;
|
|
} else {
|
|
goto found_eos;
|
|
}
|
|
}
|
|
|
|
/* scale the amount of data by the segment rate so we get equal
|
|
* amounts of data regardless of the playback rate */
|
|
desired =
|
|
MIN (gst_guint64_to_gdouble (wav->dataleft),
|
|
wav->max_buf_size * ABS (wav->segment.rate));
|
|
|
|
if (desired >= wav->blockalign && wav->blockalign > 0)
|
|
desired -= (desired % wav->blockalign);
|
|
|
|
GST_LOG_OBJECT (wav, "Fetching %" G_GINT64_FORMAT " bytes of data "
|
|
"from the sinkpad", desired);
|
|
|
|
if (wav->streaming) {
|
|
guint avail = gst_adapter_available (wav->adapter);
|
|
guint extra;
|
|
|
|
/* flush some bytes if evil upstream sends segment that starts
|
|
* before data or does is not send sample aligned segment */
|
|
if (G_LIKELY (wav->offset >= wav->datastart)) {
|
|
extra = (wav->offset - wav->datastart) % wav->bytes_per_sample;
|
|
} else {
|
|
extra = wav->datastart - wav->offset;
|
|
}
|
|
|
|
if (G_UNLIKELY (extra)) {
|
|
extra = wav->bytes_per_sample - extra;
|
|
if (extra <= avail) {
|
|
GST_DEBUG_OBJECT (wav, "flushing %u bytes to sample boundary", extra);
|
|
gst_adapter_flush (wav->adapter, extra);
|
|
wav->offset += extra;
|
|
wav->dataleft -= extra;
|
|
goto iterate_adapter;
|
|
} else {
|
|
GST_DEBUG_OBJECT (wav, "flushing %u bytes", avail);
|
|
gst_adapter_clear (wav->adapter);
|
|
wav->offset += avail;
|
|
wav->dataleft -= avail;
|
|
return GST_FLOW_OK;
|
|
}
|
|
}
|
|
|
|
if (avail < desired) {
|
|
GST_LOG_OBJECT (wav, "Got only %u bytes of data from the sinkpad", avail);
|
|
|
|
/* If we are at the end of the stream, we need to flush whatever we have left */
|
|
if (avail > 0 && flushing) {
|
|
if (avail >= wav->blockalign && wav->blockalign > 0) {
|
|
avail -= (avail % wav->blockalign);
|
|
buf = gst_adapter_take_buffer (wav->adapter, avail);
|
|
} else {
|
|
return GST_FLOW_OK;
|
|
}
|
|
} else {
|
|
return GST_FLOW_OK;
|
|
}
|
|
} else {
|
|
buf = gst_adapter_take_buffer (wav->adapter, desired);
|
|
}
|
|
} else {
|
|
if ((res = gst_pad_pull_range (wav->sinkpad, wav->offset,
|
|
desired, &buf)) != GST_FLOW_OK)
|
|
goto pull_error;
|
|
|
|
/* we may get a short buffer at the end of the file */
|
|
if (gst_buffer_get_size (buf) < desired) {
|
|
gsize size = gst_buffer_get_size (buf);
|
|
|
|
GST_LOG_OBJECT (wav, "Got only %" G_GSIZE_FORMAT " bytes of data", size);
|
|
if (size >= wav->blockalign) {
|
|
if (wav->blockalign > 0) {
|
|
buf = gst_buffer_make_writable (buf);
|
|
gst_buffer_resize (buf, 0, size - (size % wav->blockalign));
|
|
}
|
|
} else {
|
|
gst_buffer_unref (buf);
|
|
goto found_eos;
|
|
}
|
|
}
|
|
}
|
|
|
|
obtained = gst_buffer_get_size (buf);
|
|
|
|
/* our positions in bytes */
|
|
pos = wav->offset - wav->datastart;
|
|
nextpos = pos + obtained;
|
|
|
|
/* update offsets, does not overflow. */
|
|
buf = gst_buffer_make_writable (buf);
|
|
GST_BUFFER_OFFSET (buf) = pos / wav->bytes_per_sample;
|
|
GST_BUFFER_OFFSET_END (buf) = nextpos / wav->bytes_per_sample;
|
|
|
|
/* 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 (G_UNLIKELY (wav->first)) {
|
|
wav->first = FALSE;
|
|
/* this will also push the segment events */
|
|
gst_wavparse_add_src_pad (wav, buf);
|
|
} else {
|
|
/* If we have a pending start segment, send it now. */
|
|
if (G_UNLIKELY (wav->start_segment != NULL)) {
|
|
gst_pad_push_event (wav->srcpad, wav->start_segment);
|
|
wav->start_segment = NULL;
|
|
}
|
|
}
|
|
|
|
if (wav->bps > 0) {
|
|
/* and timestamps if we have a bitrate, be careful for overflows */
|
|
timestamp =
|
|
gst_util_uint64_scale_ceil (pos, GST_SECOND, (guint64) wav->bps);
|
|
next_timestamp =
|
|
gst_util_uint64_scale_ceil (nextpos, GST_SECOND, (guint64) wav->bps);
|
|
duration = next_timestamp - timestamp;
|
|
|
|
/* update current running segment position */
|
|
if (G_LIKELY (next_timestamp >= wav->segment.start))
|
|
wav->segment.position = next_timestamp;
|
|
} else if (wav->fact) {
|
|
guint64 bps =
|
|
gst_util_uint64_scale_int (wav->datasize, wav->rate, wav->fact);
|
|
/* and timestamps if we have a bitrate, be careful for overflows */
|
|
timestamp = gst_util_uint64_scale_ceil (pos, GST_SECOND, bps);
|
|
next_timestamp = gst_util_uint64_scale_ceil (nextpos, GST_SECOND, bps);
|
|
duration = next_timestamp - timestamp;
|
|
} else {
|
|
/* no bitrate, all we know is that the first sample has timestamp 0, all
|
|
* other positions and durations have unknown timestamp. */
|
|
if (pos == 0)
|
|
timestamp = 0;
|
|
else
|
|
timestamp = GST_CLOCK_TIME_NONE;
|
|
duration = GST_CLOCK_TIME_NONE;
|
|
/* update current running segment position with byte offset */
|
|
if (G_LIKELY (nextpos >= wav->segment.start))
|
|
wav->segment.position = nextpos;
|
|
}
|
|
if ((pos > 0) && wav->vbr) {
|
|
/* don't set timestamps for VBR files if it's not the first buffer */
|
|
timestamp = GST_CLOCK_TIME_NONE;
|
|
duration = GST_CLOCK_TIME_NONE;
|
|
}
|
|
if (wav->discont) {
|
|
GST_DEBUG_OBJECT (wav, "marking DISCONT");
|
|
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
|
|
wav->discont = FALSE;
|
|
} else {
|
|
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
|
|
}
|
|
|
|
GST_BUFFER_TIMESTAMP (buf) = timestamp;
|
|
GST_BUFFER_DURATION (buf) = duration;
|
|
|
|
GST_LOG_OBJECT (wav,
|
|
"Got buffer. timestamp:%" GST_TIME_FORMAT " , duration:%" GST_TIME_FORMAT
|
|
", size:%" G_GSIZE_FORMAT, GST_TIME_ARGS (timestamp),
|
|
GST_TIME_ARGS (duration), gst_buffer_get_size (buf));
|
|
|
|
if ((res = gst_pad_push (wav->srcpad, buf)) != GST_FLOW_OK)
|
|
goto push_error;
|
|
|
|
if (obtained < wav->dataleft) {
|
|
wav->offset += obtained;
|
|
wav->dataleft -= obtained;
|
|
} else {
|
|
wav->offset += wav->dataleft;
|
|
wav->dataleft = 0;
|
|
}
|
|
|
|
/* 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 */
|
|
found_eos:
|
|
{
|
|
GST_DEBUG_OBJECT (wav, "found EOS");
|
|
return GST_FLOW_EOS;
|
|
}
|
|
pull_error:
|
|
{
|
|
/* check if we got EOS */
|
|
if (res == GST_FLOW_EOS)
|
|
goto found_eos;
|
|
|
|
GST_WARNING_OBJECT (wav,
|
|
"Error getting %" G_GINT64_FORMAT " bytes from the "
|
|
"sinkpad (dataleft = %" G_GINT64_FORMAT ")", desired, wav->dataleft);
|
|
return res;
|
|
}
|
|
push_error:
|
|
{
|
|
GST_INFO_OBJECT (wav,
|
|
"Error pushing on srcpad %s:%s, reason %s, is linked? = %d",
|
|
GST_DEBUG_PAD_NAME (wav->srcpad), gst_flow_get_name (res),
|
|
gst_pad_is_linked (wav->srcpad));
|
|
return res;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_wavparse_loop (GstPad * pad)
|
|
{
|
|
GstFlowReturn ret;
|
|
GstWavParse *wav = GST_WAVPARSE (GST_PAD_PARENT (pad));
|
|
GstEvent *event;
|
|
gchar *stream_id;
|
|
|
|
GST_LOG_OBJECT (wav, "process data");
|
|
|
|
switch (wav->state) {
|
|
case GST_WAVPARSE_START:
|
|
GST_INFO_OBJECT (wav, "GST_WAVPARSE_START");
|
|
if ((ret = gst_wavparse_stream_init (wav)) != GST_FLOW_OK)
|
|
goto pause;
|
|
|
|
stream_id =
|
|
gst_pad_create_stream_id (wav->srcpad, GST_ELEMENT_CAST (wav), NULL);
|
|
event = gst_event_new_stream_start (stream_id);
|
|
gst_event_set_group_id (event, gst_util_group_id_next ());
|
|
gst_pad_push_event (wav->srcpad, event);
|
|
g_free (stream_id);
|
|
|
|
wav->state = GST_WAVPARSE_HEADER;
|
|
/* fall-through */
|
|
|
|
case GST_WAVPARSE_HEADER:
|
|
GST_INFO_OBJECT (wav, "GST_WAVPARSE_HEADER");
|
|
if ((ret = gst_wavparse_stream_headers (wav)) != GST_FLOW_OK)
|
|
goto pause;
|
|
|
|
wav->state = GST_WAVPARSE_DATA;
|
|
GST_INFO_OBJECT (wav, "GST_WAVPARSE_DATA");
|
|
/* fall-through */
|
|
|
|
case GST_WAVPARSE_DATA:
|
|
if ((ret = gst_wavparse_stream_data (wav, FALSE)) != GST_FLOW_OK)
|
|
goto pause;
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
}
|
|
return;
|
|
|
|
/* ERRORS */
|
|
pause:
|
|
{
|
|
const gchar *reason = gst_flow_get_name (ret);
|
|
|
|
GST_DEBUG_OBJECT (wav, "pausing task, reason %s", reason);
|
|
gst_pad_pause_task (pad);
|
|
|
|
if (ret == GST_FLOW_EOS) {
|
|
/* handle end-of-stream/segment */
|
|
/* so align our position with the end of it, if there is one
|
|
* this ensures a subsequent will arrive at correct base/acc time */
|
|
if (wav->segment.format == GST_FORMAT_TIME) {
|
|
if (wav->segment.rate > 0.0 &&
|
|
GST_CLOCK_TIME_IS_VALID (wav->segment.stop))
|
|
wav->segment.position = wav->segment.stop;
|
|
else if (wav->segment.rate < 0.0)
|
|
wav->segment.position = wav->segment.start;
|
|
}
|
|
if (wav->state == GST_WAVPARSE_START || !wav->caps) {
|
|
GST_ELEMENT_ERROR (wav, STREAM, WRONG_TYPE, (NULL),
|
|
("No valid input found before end of stream"));
|
|
gst_pad_push_event (wav->srcpad, gst_event_new_eos ());
|
|
} else {
|
|
/* add pad before we perform EOS */
|
|
if (G_UNLIKELY (wav->first)) {
|
|
wav->first = FALSE;
|
|
gst_wavparse_add_src_pad (wav, NULL);
|
|
} else {
|
|
/* If we have a pending start segment, send it now. Can happen if a seek
|
|
* causes an immediate EOS */
|
|
if (G_UNLIKELY (wav->start_segment != NULL)) {
|
|
gst_pad_push_event (wav->srcpad, wav->start_segment);
|
|
wav->start_segment = NULL;
|
|
}
|
|
}
|
|
|
|
/* perform EOS logic */
|
|
if (wav->segment.flags & GST_SEEK_FLAG_SEGMENT) {
|
|
GstClockTime stop;
|
|
|
|
if ((stop = wav->segment.stop) == -1)
|
|
stop = wav->segment.duration;
|
|
|
|
gst_element_post_message (GST_ELEMENT_CAST (wav),
|
|
gst_message_new_segment_done (GST_OBJECT_CAST (wav),
|
|
wav->segment.format, stop));
|
|
gst_pad_push_event (wav->srcpad,
|
|
gst_event_new_segment_done (wav->segment.format, stop));
|
|
} else {
|
|
gst_pad_push_event (wav->srcpad, gst_event_new_eos ());
|
|
}
|
|
}
|
|
} else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_EOS) {
|
|
/* for fatal errors we post an error message, post the error
|
|
* first so the app knows about the error first. */
|
|
GST_ELEMENT_FLOW_ERROR (wav, ret);
|
|
gst_pad_push_event (wav->srcpad, gst_event_new_eos ());
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_wavparse_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
|
|
{
|
|
GstFlowReturn ret;
|
|
GstWavParse *wav = GST_WAVPARSE (parent);
|
|
|
|
GST_LOG_OBJECT (wav, "adapter_push %" G_GSIZE_FORMAT " bytes",
|
|
gst_buffer_get_size (buf));
|
|
|
|
/* Hold a reference to the buffer, as we access buffer properties in the
|
|
`GST_WAVPARSE_DATA` case below and `gst_adapter_push` steals a reference
|
|
to the buffer. */
|
|
gst_buffer_ref (buf);
|
|
|
|
gst_adapter_push (wav->adapter, buf);
|
|
|
|
switch (wav->state) {
|
|
case GST_WAVPARSE_START:
|
|
GST_INFO_OBJECT (wav, "GST_WAVPARSE_START");
|
|
if ((ret = gst_wavparse_parse_stream_init (wav)) != GST_FLOW_OK)
|
|
goto done;
|
|
|
|
if (wav->state != GST_WAVPARSE_HEADER)
|
|
break;
|
|
|
|
/* otherwise fall-through */
|
|
case GST_WAVPARSE_HEADER:
|
|
GST_INFO_OBJECT (wav, "GST_WAVPARSE_HEADER");
|
|
if ((ret = gst_wavparse_stream_headers (wav)) != GST_FLOW_OK)
|
|
goto done;
|
|
|
|
if (!wav->got_fmt || wav->datastart == 0)
|
|
break;
|
|
|
|
wav->state = GST_WAVPARSE_DATA;
|
|
GST_INFO_OBJECT (wav, "GST_WAVPARSE_DATA");
|
|
|
|
/* fall-through */
|
|
case GST_WAVPARSE_DATA:
|
|
if (buf && GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT))
|
|
wav->discont = TRUE;
|
|
if ((ret = gst_wavparse_stream_data (wav, FALSE)) != GST_FLOW_OK)
|
|
goto done;
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
}
|
|
done:
|
|
if (G_UNLIKELY (wav->abort_buffering)) {
|
|
wav->abort_buffering = FALSE;
|
|
ret = GST_FLOW_ERROR;
|
|
/* sort of demux/parse error */
|
|
GST_ELEMENT_ERROR (wav, STREAM, DEMUX, (NULL), ("unhandled buffer size"));
|
|
}
|
|
|
|
gst_buffer_unref (buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_wavparse_flush_data (GstWavParse * wav)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
guint av;
|
|
|
|
if ((av = gst_adapter_available (wav->adapter)) > 0) {
|
|
ret = gst_wavparse_stream_data (wav, TRUE);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_wavparse_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
{
|
|
GstWavParse *wav = GST_WAVPARSE (parent);
|
|
gboolean ret = TRUE;
|
|
|
|
GST_LOG_OBJECT (wav, "handling %s event", GST_EVENT_TYPE_NAME (event));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_STREAM_START:
|
|
{
|
|
gst_wavparse_reset (wav, FALSE);
|
|
|
|
ret = gst_pad_event_default (wav->sinkpad, parent, event);
|
|
break;
|
|
}
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
/* discard, we'll come up with proper src caps */
|
|
gst_event_unref (event);
|
|
break;
|
|
}
|
|
case GST_EVENT_SEGMENT:
|
|
{
|
|
gint64 start, stop, offset = 0, end_offset = -1;
|
|
GstSegment segment;
|
|
|
|
/* some debug output */
|
|
gst_event_copy_segment (event, &segment);
|
|
GST_DEBUG_OBJECT (wav, "received newsegment %" GST_SEGMENT_FORMAT,
|
|
&segment);
|
|
|
|
if (wav->state != GST_WAVPARSE_DATA) {
|
|
GST_DEBUG_OBJECT (wav, "still starting, eating event");
|
|
goto exit;
|
|
}
|
|
|
|
/* now we are either committed to TIME or BYTE format,
|
|
* and we only expect a BYTE segment, e.g. following a seek */
|
|
if (segment.format == GST_FORMAT_BYTES) {
|
|
/* handle (un)signed issues */
|
|
start = segment.start;
|
|
stop = segment.stop;
|
|
if (start > 0) {
|
|
offset = start;
|
|
start -= wav->datastart;
|
|
start = MAX (start, 0);
|
|
}
|
|
if (stop > 0) {
|
|
end_offset = stop;
|
|
stop -= wav->datastart;
|
|
stop = MAX (stop, 0);
|
|
}
|
|
if (wav->segment.format == GST_FORMAT_TIME) {
|
|
guint64 bps = wav->bps;
|
|
|
|
/* operating in format TIME, so we can convert */
|
|
if (!bps && wav->fact)
|
|
bps =
|
|
gst_util_uint64_scale_int (wav->datasize, wav->rate, wav->fact);
|
|
if (bps) {
|
|
if (start >= 0)
|
|
start =
|
|
gst_util_uint64_scale_ceil (start, GST_SECOND,
|
|
(guint64) wav->bps);
|
|
if (stop >= 0)
|
|
stop =
|
|
gst_util_uint64_scale_ceil (stop, GST_SECOND,
|
|
(guint64) wav->bps);
|
|
}
|
|
}
|
|
} else {
|
|
GST_DEBUG_OBJECT (wav, "unsupported segment format, ignoring");
|
|
goto exit;
|
|
}
|
|
|
|
segment.start = start;
|
|
segment.stop = stop;
|
|
|
|
/* accept upstream's notion of segment and distribute along */
|
|
segment.format = wav->segment.format;
|
|
segment.time = segment.position = segment.start;
|
|
segment.duration = wav->segment.duration;
|
|
segment.base = gst_segment_to_running_time (&wav->segment,
|
|
GST_FORMAT_TIME, wav->segment.position);
|
|
|
|
gst_segment_copy_into (&segment, &wav->segment);
|
|
|
|
/* also store the newsegment event for the streaming thread */
|
|
if (wav->start_segment)
|
|
gst_event_unref (wav->start_segment);
|
|
GST_DEBUG_OBJECT (wav, "Storing newseg %" GST_SEGMENT_FORMAT, &segment);
|
|
wav->start_segment = gst_event_new_segment (&segment);
|
|
|
|
/* stream leftover data in current segment */
|
|
gst_wavparse_flush_data (wav);
|
|
/* and set up streaming thread for next one */
|
|
wav->offset = offset;
|
|
wav->end_offset = end_offset;
|
|
|
|
if (wav->datasize > 0 && (wav->end_offset == -1
|
|
|| wav->end_offset > wav->datastart + wav->datasize))
|
|
wav->end_offset = wav->datastart + wav->datasize;
|
|
|
|
if (wav->end_offset != -1) {
|
|
wav->dataleft = wav->end_offset - wav->offset;
|
|
} else {
|
|
/* infinity; upstream will EOS when done */
|
|
wav->dataleft = G_MAXUINT64;
|
|
}
|
|
exit:
|
|
gst_event_unref (event);
|
|
break;
|
|
}
|
|
case GST_EVENT_EOS:
|
|
if (!wav->caps) {
|
|
GST_ELEMENT_ERROR (wav, STREAM, WRONG_TYPE, (NULL),
|
|
("No valid input found before end of stream"));
|
|
} else {
|
|
switch (wav->state) {
|
|
case GST_WAVPARSE_START:
|
|
GST_ELEMENT_ERROR (wav, STREAM, WRONG_TYPE, (NULL),
|
|
("No valid input found before end of stream"));
|
|
break;
|
|
case GST_WAVPARSE_HEADER:
|
|
GST_ELEMENT_ERROR (wav, STREAM, DEMUX, (NULL),
|
|
("No audio data chunk found before end of stream"));
|
|
break;
|
|
case GST_WAVPARSE_DATA:
|
|
/* add pad if needed so EOS is seen downstream */
|
|
if (G_UNLIKELY (wav->first)) {
|
|
wav->first = FALSE;
|
|
gst_wavparse_add_src_pad (wav, NULL);
|
|
}
|
|
/* stream leftover data in current segment */
|
|
gst_wavparse_flush_data (wav);
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
}
|
|
}
|
|
/* fall-through */
|
|
case GST_EVENT_FLUSH_STOP:
|
|
{
|
|
GstClockTime dur;
|
|
|
|
if (wav->adapter)
|
|
gst_adapter_clear (wav->adapter);
|
|
wav->discont = TRUE;
|
|
dur = wav->segment.duration;
|
|
gst_segment_init (&wav->segment, wav->segment.format);
|
|
wav->segment.duration = dur;
|
|
/* fall-through */
|
|
}
|
|
default:
|
|
ret = gst_pad_event_default (wav->sinkpad, parent, event);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#if 0
|
|
/* convert and query stuff */
|
|
static const GstFormat *
|
|
gst_wavparse_get_formats (GstPad * pad)
|
|
{
|
|
static const GstFormat formats[] = {
|
|
GST_FORMAT_TIME,
|
|
GST_FORMAT_BYTES,
|
|
GST_FORMAT_DEFAULT, /* a "frame", ie a set of samples per Hz */
|
|
0
|
|
};
|
|
|
|
return formats;
|
|
}
|
|
#endif
|
|
|
|
static gboolean
|
|
gst_wavparse_pad_convert (GstPad * pad,
|
|
GstFormat src_format, gint64 src_value,
|
|
GstFormat * dest_format, gint64 * dest_value)
|
|
{
|
|
GstWavParse *wavparse;
|
|
gboolean res = TRUE;
|
|
|
|
wavparse = GST_WAVPARSE (GST_PAD_PARENT (pad));
|
|
|
|
if (*dest_format == src_format) {
|
|
*dest_value = src_value;
|
|
return TRUE;
|
|
}
|
|
|
|
if ((wavparse->bps == 0) && !wavparse->fact)
|
|
goto no_bps_fact;
|
|
|
|
GST_INFO_OBJECT (wavparse, "converting value from %s to %s",
|
|
gst_format_get_name (src_format), gst_format_get_name (*dest_format));
|
|
|
|
switch (src_format) {
|
|
case GST_FORMAT_BYTES:
|
|
switch (*dest_format) {
|
|
case GST_FORMAT_DEFAULT:
|
|
*dest_value = src_value / wavparse->bytes_per_sample;
|
|
/* make sure we end up on a sample boundary */
|
|
*dest_value -= *dest_value % wavparse->bytes_per_sample;
|
|
break;
|
|
case GST_FORMAT_TIME:
|
|
/* src_value + datastart = offset */
|
|
GST_INFO_OBJECT (wavparse,
|
|
"src=%" G_GINT64_FORMAT ", offset=%" G_GINT64_FORMAT, src_value,
|
|
wavparse->offset);
|
|
if (wavparse->bps > 0)
|
|
*dest_value = gst_util_uint64_scale_ceil (src_value, GST_SECOND,
|
|
(guint64) wavparse->bps);
|
|
else if (wavparse->fact) {
|
|
guint64 bps = gst_util_uint64_scale_int_ceil (wavparse->datasize,
|
|
wavparse->rate, wavparse->fact);
|
|
|
|
*dest_value =
|
|
gst_util_uint64_scale_int_ceil (src_value, GST_SECOND, bps);
|
|
} else {
|
|
res = FALSE;
|
|
}
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
goto done;
|
|
}
|
|
break;
|
|
|
|
case GST_FORMAT_DEFAULT:
|
|
switch (*dest_format) {
|
|
case GST_FORMAT_BYTES:
|
|
*dest_value = src_value * wavparse->bytes_per_sample;
|
|
break;
|
|
case GST_FORMAT_TIME:
|
|
*dest_value = gst_util_uint64_scale (src_value, GST_SECOND,
|
|
(guint64) wavparse->rate);
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
goto done;
|
|
}
|
|
break;
|
|
|
|
case GST_FORMAT_TIME:
|
|
switch (*dest_format) {
|
|
case GST_FORMAT_BYTES:
|
|
if (wavparse->bps > 0)
|
|
*dest_value = gst_util_uint64_scale (src_value,
|
|
(guint64) wavparse->bps, GST_SECOND);
|
|
else {
|
|
guint64 bps = gst_util_uint64_scale_int (wavparse->datasize,
|
|
wavparse->rate, wavparse->fact);
|
|
|
|
*dest_value = gst_util_uint64_scale (src_value, bps, GST_SECOND);
|
|
}
|
|
/* make sure we end up on a sample boundary */
|
|
*dest_value -= *dest_value % wavparse->blockalign;
|
|
break;
|
|
case GST_FORMAT_DEFAULT:
|
|
*dest_value = gst_util_uint64_scale (src_value,
|
|
(guint64) wavparse->rate, GST_SECOND);
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
goto done;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
res = FALSE;
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
return res;
|
|
|
|
/* ERRORS */
|
|
no_bps_fact:
|
|
{
|
|
GST_DEBUG_OBJECT (wavparse, "bps 0 or no fact chunk, cannot convert");
|
|
res = FALSE;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
/* handle queries for location and length in requested format */
|
|
static gboolean
|
|
gst_wavparse_pad_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
|
{
|
|
gboolean res = TRUE;
|
|
GstWavParse *wav = GST_WAVPARSE (parent);
|
|
|
|
GST_LOG_OBJECT (pad, "%s query", GST_QUERY_TYPE_NAME (query));
|
|
|
|
if (wav->state != GST_WAVPARSE_DATA) {
|
|
return gst_pad_query_default (pad, parent, query);
|
|
}
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_POSITION:
|
|
{
|
|
gint64 curb;
|
|
gint64 cur;
|
|
GstFormat format;
|
|
|
|
/* this is not very precise, as we have pushed severla buffer upstream for prerolling */
|
|
curb = wav->offset - wav->datastart;
|
|
gst_query_parse_position (query, &format, NULL);
|
|
GST_INFO_OBJECT (wav, "pos query at %" G_GINT64_FORMAT, curb);
|
|
|
|
switch (format) {
|
|
case GST_FORMAT_BYTES:
|
|
format = GST_FORMAT_BYTES;
|
|
cur = curb;
|
|
break;
|
|
default:
|
|
res = gst_wavparse_pad_convert (pad, GST_FORMAT_BYTES, curb,
|
|
&format, &cur);
|
|
break;
|
|
}
|
|
if (res)
|
|
gst_query_set_position (query, format, cur);
|
|
break;
|
|
}
|
|
case GST_QUERY_DURATION:
|
|
{
|
|
gint64 duration = 0;
|
|
GstFormat format;
|
|
|
|
if (wav->ignore_length) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
gst_query_parse_duration (query, &format, NULL);
|
|
|
|
switch (format) {
|
|
case GST_FORMAT_BYTES:{
|
|
format = GST_FORMAT_BYTES;
|
|
duration = wav->datasize;
|
|
break;
|
|
}
|
|
case GST_FORMAT_TIME:
|
|
if ((res = gst_wavparse_calculate_duration (wav))) {
|
|
duration = wav->duration;
|
|
}
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
if (res)
|
|
gst_query_set_duration (query, format, duration);
|
|
break;
|
|
}
|
|
case GST_QUERY_CONVERT:
|
|
{
|
|
gint64 srcvalue, dstvalue;
|
|
GstFormat srcformat, dstformat;
|
|
|
|
gst_query_parse_convert (query, &srcformat, &srcvalue,
|
|
&dstformat, &dstvalue);
|
|
res = gst_wavparse_pad_convert (pad, srcformat, srcvalue,
|
|
&dstformat, &dstvalue);
|
|
if (res)
|
|
gst_query_set_convert (query, srcformat, srcvalue, dstformat, dstvalue);
|
|
break;
|
|
}
|
|
case GST_QUERY_SEEKING:{
|
|
GstFormat fmt;
|
|
gboolean seekable = FALSE;
|
|
|
|
gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
|
|
if (fmt == wav->segment.format) {
|
|
if (wav->streaming) {
|
|
GstQuery *q;
|
|
|
|
q = gst_query_new_seeking (GST_FORMAT_BYTES);
|
|
if ((res = gst_pad_peer_query (wav->sinkpad, q))) {
|
|
gst_query_parse_seeking (q, &fmt, &seekable, NULL, NULL);
|
|
GST_LOG_OBJECT (wav, "upstream BYTE seekable %d", seekable);
|
|
}
|
|
gst_query_unref (q);
|
|
} else {
|
|
GST_LOG_OBJECT (wav, "looping => seekable");
|
|
seekable = TRUE;
|
|
res = TRUE;
|
|
}
|
|
} else if (fmt == GST_FORMAT_TIME) {
|
|
res = TRUE;
|
|
}
|
|
if (res) {
|
|
gst_query_set_seeking (query, fmt, seekable, 0, wav->segment.duration);
|
|
}
|
|
break;
|
|
}
|
|
case GST_QUERY_SEGMENT:
|
|
{
|
|
GstFormat format;
|
|
gint64 start, stop;
|
|
|
|
format = wav->segment.format;
|
|
|
|
start =
|
|
gst_segment_to_stream_time (&wav->segment, format,
|
|
wav->segment.start);
|
|
if ((stop = wav->segment.stop) == -1)
|
|
stop = wav->segment.duration;
|
|
else
|
|
stop = gst_segment_to_stream_time (&wav->segment, format, stop);
|
|
|
|
gst_query_set_segment (query, wav->segment.rate, format, start, stop);
|
|
res = TRUE;
|
|
break;
|
|
}
|
|
default:
|
|
res = gst_pad_query_default (pad, parent, query);
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_wavparse_srcpad_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
{
|
|
GstWavParse *wavparse = GST_WAVPARSE (parent);
|
|
gboolean res = FALSE;
|
|
|
|
GST_DEBUG_OBJECT (wavparse, "%s event", GST_EVENT_TYPE_NAME (event));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SEEK:
|
|
/* can only handle events when we are in the data state */
|
|
if (wavparse->state == GST_WAVPARSE_DATA) {
|
|
res = gst_wavparse_perform_seek (wavparse, event);
|
|
}
|
|
gst_event_unref (event);
|
|
break;
|
|
|
|
case GST_EVENT_TOC_SELECT:
|
|
{
|
|
char *uid = NULL;
|
|
GstTocEntry *entry = NULL;
|
|
GstEvent *seek_event;
|
|
gint64 start_pos;
|
|
|
|
if (!wavparse->toc) {
|
|
GST_DEBUG_OBJECT (wavparse, "no TOC to select");
|
|
return FALSE;
|
|
} else {
|
|
gst_event_parse_toc_select (event, &uid);
|
|
if (uid != NULL) {
|
|
GST_OBJECT_LOCK (wavparse);
|
|
entry = gst_toc_find_entry (wavparse->toc, uid);
|
|
if (entry == NULL) {
|
|
GST_OBJECT_UNLOCK (wavparse);
|
|
GST_WARNING_OBJECT (wavparse, "no TOC entry with given UID: %s",
|
|
uid);
|
|
res = FALSE;
|
|
} else {
|
|
gst_toc_entry_get_start_stop_times (entry, &start_pos, NULL);
|
|
GST_OBJECT_UNLOCK (wavparse);
|
|
seek_event = gst_event_new_seek (1.0,
|
|
GST_FORMAT_TIME,
|
|
GST_SEEK_FLAG_FLUSH,
|
|
GST_SEEK_TYPE_SET, start_pos, GST_SEEK_TYPE_SET, -1);
|
|
res = gst_wavparse_perform_seek (wavparse, seek_event);
|
|
gst_event_unref (seek_event);
|
|
}
|
|
g_free (uid);
|
|
} else {
|
|
GST_WARNING_OBJECT (wavparse, "received empty TOC select event");
|
|
res = FALSE;
|
|
}
|
|
}
|
|
gst_event_unref (event);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
res = gst_pad_push_event (wavparse->sinkpad, event);
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_wavparse_sink_activate (GstPad * sinkpad, GstObject * parent)
|
|
{
|
|
GstWavParse *wav = GST_WAVPARSE (parent);
|
|
GstQuery *query;
|
|
gboolean pull_mode;
|
|
|
|
if (wav->adapter) {
|
|
gst_adapter_clear (wav->adapter);
|
|
g_object_unref (wav->adapter);
|
|
wav->adapter = NULL;
|
|
}
|
|
|
|
query = gst_query_new_scheduling ();
|
|
|
|
if (!gst_pad_peer_query (sinkpad, query)) {
|
|
gst_query_unref (query);
|
|
goto activate_push;
|
|
}
|
|
|
|
pull_mode = gst_query_has_scheduling_mode_with_flags (query,
|
|
GST_PAD_MODE_PULL, GST_SCHEDULING_FLAG_SEEKABLE);
|
|
gst_query_unref (query);
|
|
|
|
if (!pull_mode)
|
|
goto activate_push;
|
|
|
|
GST_DEBUG_OBJECT (sinkpad, "activating pull");
|
|
wav->streaming = FALSE;
|
|
return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PULL, TRUE);
|
|
|
|
activate_push:
|
|
{
|
|
GST_DEBUG_OBJECT (sinkpad, "activating push");
|
|
wav->streaming = TRUE;
|
|
wav->adapter = gst_adapter_new ();
|
|
return gst_pad_activate_mode (sinkpad, GST_PAD_MODE_PUSH, TRUE);
|
|
}
|
|
}
|
|
|
|
|
|
static gboolean
|
|
gst_wavparse_sink_activate_mode (GstPad * sinkpad, GstObject * parent,
|
|
GstPadMode mode, gboolean active)
|
|
{
|
|
gboolean res;
|
|
|
|
switch (mode) {
|
|
case GST_PAD_MODE_PUSH:
|
|
res = TRUE;
|
|
break;
|
|
case GST_PAD_MODE_PULL:
|
|
if (active) {
|
|
/* if we have a scheduler we can start the task */
|
|
res = gst_pad_start_task (sinkpad, (GstTaskFunction) gst_wavparse_loop,
|
|
sinkpad, NULL);
|
|
} else {
|
|
res = gst_pad_stop_task (sinkpad);
|
|
}
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_wavparse_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret;
|
|
GstWavParse *wav = GST_WAVPARSE (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_wavparse_reset (wav, TRUE);
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
gst_wavparse_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstWavParse *self;
|
|
|
|
g_return_if_fail (GST_IS_WAVPARSE (object));
|
|
self = GST_WAVPARSE (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_IGNORE_LENGTH:
|
|
self->ignore_length = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
|
|
}
|
|
|
|
}
|
|
|
|
static void
|
|
gst_wavparse_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstWavParse *self;
|
|
|
|
g_return_if_fail (GST_IS_WAVPARSE (object));
|
|
self = GST_WAVPARSE (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_IGNORE_LENGTH:
|
|
g_value_set_boolean (value, self->ignore_length);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
return GST_ELEMENT_REGISTER (wavparse, plugin);
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
|
GST_VERSION_MINOR,
|
|
wavparse,
|
|
"Parse a .wav file into raw audio",
|
|
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
|