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b415d7b34f
This helps in cases where raw audio data is being delivered, but the buffers do not come in sample aligned sizes. The new unalignedaudioparse bin can be autoplugged and configures an internal audioparse element to align the data. audioparse itself gets support for audio/x-unaligned-raw input caps; the output caps then contain the same information, except that the name is changed to audio/x-raw (since audioparse aligns the data). This ensures that souphttpsrc ! audioparse still works. https://bugzilla.gnome.org/show_bug.cgi?id=689460
126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
/* GStreamer
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* Copyright (C) 2016 Carlos Rafael Giani <dv@pseudoterminal.org>
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*
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* gstunalignedaudioparse.c:
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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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#include <string.h>
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#include <stdio.h>
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#include <gst/gst.h>
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#include <gst/audio/audio.h>
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#include "gstunalignedaudioparse.h"
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#include "unalignedaudio.h"
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GST_DEBUG_CATEGORY (unaligned_audio_parse_debug);
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#define GST_CAT_DEFAULT unaligned_audio_parse_debug
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struct _GstUnalignedAudioParse
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{
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GstBin parent;
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GstElement *inner_parser;
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};
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struct _GstUnalignedAudioParseClass
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{
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GstBinClass parent_class;
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};
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static GstStaticPadTemplate static_sink_template =
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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 (GST_UNALIGNED_RAW_AUDIO_CAPS)
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);
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static GstStaticPadTemplate static_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_AUDIO_CAPS_MAKE (GST_AUDIO_FORMATS_ALL)
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", layout = (string) { interleaved, non-interleaved }")
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);
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G_DEFINE_TYPE (GstUnalignedAudioParse, gst_unaligned_audio_parse, GST_TYPE_BIN);
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static void
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gst_unaligned_audio_parse_class_init (GstUnalignedAudioParseClass * klass)
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{
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GstElementClass *element_class;
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GST_DEBUG_CATEGORY_INIT (unaligned_audio_parse_debug, "unalignedaudioparse",
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0, "Unaligned raw audio parser");
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element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&static_sink_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&static_src_template));
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gst_element_class_set_static_metadata (element_class,
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"unalignedaudioparse",
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"Codec/Parser/Bin/Audio",
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"Parse unaligned raw audio data",
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"Carlos Rafael Giani <dv@pseudoterminal.org>");
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}
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static void
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gst_unaligned_audio_parse_init (GstUnalignedAudioParse * unaligned_audio_parse)
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{
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GstPad *inner_pad;
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GstPad *ghostpad;
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unaligned_audio_parse->inner_parser =
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gst_element_factory_make ("audioparse", "inner_parser");
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g_assert (unaligned_audio_parse->inner_parser != NULL);
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g_object_set (G_OBJECT (unaligned_audio_parse->inner_parser),
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"use-sink-caps", TRUE, NULL);
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gst_bin_add (GST_BIN (unaligned_audio_parse),
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unaligned_audio_parse->inner_parser);
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inner_pad =
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gst_element_get_static_pad (unaligned_audio_parse->inner_parser, "sink");
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ghostpad =
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gst_ghost_pad_new_from_template ("sink", inner_pad,
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gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS
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(unaligned_audio_parse), "sink"));
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gst_element_add_pad (GST_ELEMENT (unaligned_audio_parse), ghostpad);
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gst_object_unref (GST_OBJECT (inner_pad));
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inner_pad = gst_element_get_static_pad (unaligned_audio_parse->inner_parser,
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"src");
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ghostpad =
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gst_ghost_pad_new_from_template ("src", inner_pad,
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gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS
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(unaligned_audio_parse), "src"));
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gst_element_add_pad (GST_ELEMENT (unaligned_audio_parse), ghostpad);
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gst_object_unref (GST_OBJECT (inner_pad));
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}
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