mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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opus: make opusparse set headers on caps
Header-on-caps code moved to a new shared location to avoid duplicating the code.
This commit is contained in:
Vincent Penquerc'h
parent
efcd038346
commit
7030b04f5e
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@ -1,6 +1,6 @@
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plugin_LTLIBRARIES = libgstopus.la
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libgstopus_la_SOURCES = gstopus.c gstopusdec.c gstopusenc.c gstopusparse.c
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libgstopus_la_SOURCES = gstopus.c gstopusdec.c gstopusenc.c gstopusparse.c gstopusheader.c
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libgstopus_la_CFLAGS = \
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-DGST_USE_UNSTABLE_API \
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$(GST_PLUGINS_BASE_CFLAGS) \
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@ -15,4 +15,4 @@ libgstopus_la_LIBADD = \
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libgstopus_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) $(LIBM)
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libgstopus_la_LIBTOOLFLAGS = --tag=disable-static
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noinst_HEADERS = gstopusenc.h gstopusdec.h gstopusparse.h
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noinst_HEADERS = gstopusenc.h gstopusdec.h gstopusparse.h gstopusheader.h
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@ -1,6 +1,7 @@
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/* GStreamer Opus Encoder
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2008> Sebastian Dröge <sebastian.droege@collabora.co.uk>
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* Copyright (C) <2011> Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
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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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@ -46,9 +47,8 @@
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#include <opus/opus.h>
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#include <gst/gsttagsetter.h>
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#include <gst/tag/tag.h>
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#include <gst/base/gstbytewriter.h>
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#include <gst/audio/audio.h>
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#include "gstopusheader.h"
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#include "gstopusenc.h"
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GST_DEBUG_CATEGORY_STATIC (opusenc_debug);
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@ -414,61 +414,6 @@ gst_opus_enc_set_format (GstAudioEncoder * benc, GstAudioInfo * info)
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return TRUE;
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}
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static GstBuffer *
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gst_opus_enc_create_id_buffer (GstOpusEnc * enc)
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{
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GstBuffer *buffer;
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GstByteWriter bw;
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gst_byte_writer_init (&bw);
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/* See http://wiki.xiph.org/OggOpus */
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gst_byte_writer_put_data (&bw, (const guint8 *) "OpusHead", 8);
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gst_byte_writer_put_uint8 (&bw, 0); /* version number */
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gst_byte_writer_put_uint8 (&bw, enc->n_channels);
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gst_byte_writer_put_uint16_le (&bw, 0); /* pre-skip *//* TODO: endianness ? */
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gst_byte_writer_put_uint32_le (&bw, enc->sample_rate);
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gst_byte_writer_put_uint16_le (&bw, 0); /* output gain *//* TODO: endianness ? */
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gst_byte_writer_put_uint8 (&bw, 0); /* channel mapping *//* TODO: what is this ? */
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buffer = gst_byte_writer_reset_and_get_buffer (&bw);
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GST_BUFFER_OFFSET (buffer) = 0;
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GST_BUFFER_OFFSET_END (buffer) = 0;
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return buffer;
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}
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static GstBuffer *
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gst_opus_enc_create_metadata_buffer (GstOpusEnc * enc)
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{
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const GstTagList *tags;
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GstTagList *empty_tags = NULL;
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GstBuffer *comments = NULL;
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tags = gst_tag_setter_get_tag_list (GST_TAG_SETTER (enc));
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GST_DEBUG_OBJECT (enc, "tags = %" GST_PTR_FORMAT, tags);
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if (tags == NULL) {
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/* FIXME: better fix chain of callers to not write metadata at all,
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* if there is none */
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empty_tags = gst_tag_list_new ();
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tags = empty_tags;
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}
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comments =
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gst_tag_list_to_vorbiscomment_buffer (tags, (const guint8 *) "OpusTags",
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8, "Encoded with GStreamer Opusenc");
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GST_BUFFER_OFFSET (comments) = 0;
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GST_BUFFER_OFFSET_END (comments) = 0;
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if (empty_tags)
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gst_tag_list_free (empty_tags);
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return comments;
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}
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static gboolean
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gst_opus_enc_setup (GstOpusEnc * enc)
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{
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@ -644,63 +589,6 @@ done:
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return ret;
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}
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/*
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* (really really) FIXME: move into core (dixit tpm)
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*/
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/**
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* _gst_caps_set_buffer_array:
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* @caps: a #GstCaps
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* @field: field in caps to set
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* @buf: header buffers
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*
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* Adds given buffers to an array of buffers set as the given @field
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* on the given @caps. List of buffer arguments must be NULL-terminated.
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*
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* Returns: input caps with a streamheader field added, or NULL if some error
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*/
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static GstCaps *
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_gst_caps_set_buffer_array (GstCaps * caps, const gchar * field,
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GstBuffer * buf, ...)
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{
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GstStructure *structure = NULL;
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va_list va;
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GValue array = { 0 };
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GValue value = { 0 };
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g_return_val_if_fail (caps != NULL, NULL);
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g_return_val_if_fail (gst_caps_is_fixed (caps), NULL);
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g_return_val_if_fail (field != NULL, NULL);
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caps = gst_caps_make_writable (caps);
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structure = gst_caps_get_structure (caps, 0);
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g_value_init (&array, GST_TYPE_ARRAY);
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va_start (va, buf);
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/* put buffers in a fixed list */
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while (buf) {
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g_assert (gst_buffer_is_writable (buf));
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/* mark buffer */
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GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
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g_value_init (&value, GST_TYPE_BUFFER);
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buf = gst_buffer_copy (buf);
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GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
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gst_value_set_buffer (&value, buf);
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gst_buffer_unref (buf);
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gst_value_array_append_value (&array, &value);
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g_value_unset (&value);
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buf = va_arg (va, GstBuffer *);
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}
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gst_structure_set_value (structure, field, &array);
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g_value_unset (&array);
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return caps;
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}
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static GstFlowReturn
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gst_opus_enc_handle_frame (GstAudioEncoder * benc, GstBuffer * buf)
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{
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@ -711,32 +599,20 @@ gst_opus_enc_handle_frame (GstAudioEncoder * benc, GstBuffer * buf)
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GST_DEBUG_OBJECT (enc, "handle_frame");
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if (!enc->header_sent) {
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/* Opus streams in Ogg begin with two headers; the initial header (with
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most of the codec setup parameters) which is mandated by the Ogg
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bitstream spec. The second header holds any comment fields. */
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GstBuffer *buf1, *buf2;
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GstCaps *caps;
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/* create header buffers */
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buf1 = gst_opus_enc_create_id_buffer (enc);
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buf2 = gst_opus_enc_create_metadata_buffer (enc);
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g_slist_foreach (enc->headers, (GFunc) gst_buffer_unref, NULL);
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enc->headers = NULL;
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gst_opus_header_create_caps (&caps, &enc->headers, enc->n_channels,
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enc->sample_rate, gst_tag_setter_get_tag_list (GST_TAG_SETTER (enc)));
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/* mark and put on caps */
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caps = gst_caps_from_string ("audio/x-opus");
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caps = _gst_caps_set_buffer_array (caps, "streamheader", buf1, buf2, NULL);
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/* negotiate with these caps */
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GST_DEBUG_OBJECT (enc, "here are the caps: %" GST_PTR_FORMAT, caps);
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gst_pad_set_caps (GST_AUDIO_ENCODER_SRC_PAD (enc), caps);
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/* push out buffers */
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/* store buffers for later pre_push sending */
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g_slist_foreach (enc->headers, (GFunc) gst_buffer_unref, NULL);
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enc->headers = NULL;
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GST_DEBUG_OBJECT (enc, "storing header buffers");
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enc->headers = g_slist_prepend (enc->headers, buf2);
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enc->headers = g_slist_prepend (enc->headers, buf1);
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enc->header_sent = TRUE;
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}
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163
ext/opus/gstopusheader.c
Normal file
163
ext/opus/gstopusheader.c
Normal file
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@ -0,0 +1,163 @@
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/* GStreamer Opus Encoder
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2008> Sebastian Dröge <sebastian.droege@collabora.co.uk>
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* Copyright (C) <2011> Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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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 <gst/tag/tag.h>
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#include <gst/base/gstbytewriter.h>
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#include "gstopusheader.h"
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static GstBuffer *
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gst_opus_enc_create_id_buffer (gint nchannels, gint sample_rate)
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{
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GstBuffer *buffer;
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GstByteWriter bw;
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gst_byte_writer_init (&bw);
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/* See http://wiki.xiph.org/OggOpus */
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gst_byte_writer_put_data (&bw, (const guint8 *) "OpusHead", 8);
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gst_byte_writer_put_uint8 (&bw, 0); /* version number */
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gst_byte_writer_put_uint8 (&bw, nchannels);
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gst_byte_writer_put_uint16_le (&bw, 0); /* pre-skip *//* TODO: endianness ? */
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gst_byte_writer_put_uint32_le (&bw, sample_rate);
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gst_byte_writer_put_uint16_le (&bw, 0); /* output gain *//* TODO: endianness ? */
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gst_byte_writer_put_uint8 (&bw, 0); /* channel mapping *//* TODO: what is this ? */
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buffer = gst_byte_writer_reset_and_get_buffer (&bw);
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GST_BUFFER_OFFSET (buffer) = 0;
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GST_BUFFER_OFFSET_END (buffer) = 0;
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return buffer;
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}
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static GstBuffer *
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gst_opus_enc_create_metadata_buffer (const GstTagList * tags)
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{
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GstTagList *empty_tags = NULL;
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GstBuffer *comments = NULL;
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GST_DEBUG ("tags = %" GST_PTR_FORMAT, tags);
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if (tags == NULL) {
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/* FIXME: better fix chain of callers to not write metadata at all,
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* if there is none */
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empty_tags = gst_tag_list_new ();
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tags = empty_tags;
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}
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comments =
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gst_tag_list_to_vorbiscomment_buffer (tags, (const guint8 *) "OpusTags",
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8, "Encoded with GStreamer Opusenc");
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GST_BUFFER_OFFSET (comments) = 0;
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GST_BUFFER_OFFSET_END (comments) = 0;
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if (empty_tags)
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gst_tag_list_free (empty_tags);
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return comments;
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}
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/*
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* (really really) FIXME: move into core (dixit tpm)
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*/
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/**
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* _gst_caps_set_buffer_array:
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* @caps: a #GstCaps
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* @field: field in caps to set
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* @buf: header buffers
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*
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* Adds given buffers to an array of buffers set as the given @field
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* on the given @caps. List of buffer arguments must be NULL-terminated.
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*
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* Returns: input caps with a streamheader field added, or NULL if some error
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*/
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static GstCaps *
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_gst_caps_set_buffer_array (GstCaps * caps, const gchar * field,
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GstBuffer * buf, ...)
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{
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GstStructure *structure = NULL;
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va_list va;
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GValue array = { 0 };
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GValue value = { 0 };
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g_return_val_if_fail (caps != NULL, NULL);
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g_return_val_if_fail (gst_caps_is_fixed (caps), NULL);
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g_return_val_if_fail (field != NULL, NULL);
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caps = gst_caps_make_writable (caps);
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structure = gst_caps_get_structure (caps, 0);
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g_value_init (&array, GST_TYPE_ARRAY);
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va_start (va, buf);
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/* put buffers in a fixed list */
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while (buf) {
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g_assert (gst_buffer_is_writable (buf));
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/* mark buffer */
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GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
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g_value_init (&value, GST_TYPE_BUFFER);
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buf = gst_buffer_copy (buf);
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GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
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gst_value_set_buffer (&value, buf);
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gst_buffer_unref (buf);
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gst_value_array_append_value (&array, &value);
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g_value_unset (&value);
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buf = va_arg (va, GstBuffer *);
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}
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gst_structure_set_value (structure, field, &array);
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g_value_unset (&array);
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return caps;
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}
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void
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gst_opus_header_create_caps (GstCaps ** caps, GSList ** headers, gint nchannels,
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gint sample_rate, const GstTagList * tags)
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{
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GstBuffer *buf1, *buf2;
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g_return_if_fail (caps);
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g_return_if_fail (headers && !*headers);
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g_return_if_fail (nchannels > 0);
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g_return_if_fail (sample_rate >= 0); /* 0 -> unset */
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/* Opus streams in Ogg begin with two headers; the initial header (with
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most of the codec setup parameters) which is mandated by the Ogg
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bitstream spec. The second header holds any comment fields. */
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/* create header buffers */
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buf1 = gst_opus_enc_create_id_buffer (nchannels, sample_rate);
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buf2 = gst_opus_enc_create_metadata_buffer (tags);
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/* mark and put on caps */
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*caps = gst_caps_from_string ("audio/x-opus");
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*caps = _gst_caps_set_buffer_array (*caps, "streamheader", buf1, buf2, NULL);
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*headers = g_slist_prepend (*headers, buf2);
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*headers = g_slist_prepend (*headers, buf1);
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}
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32
ext/opus/gstopusheader.h
Normal file
32
ext/opus/gstopusheader.h
Normal file
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@ -0,0 +1,32 @@
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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* Copyright (C) <2008> Sebastian Dröge <sebastian.droege@collabora.co.uk>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_OPUS_HEADER_H__
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#define __GST_OPUS_HEADER_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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extern void gst_opus_header_create_caps (GstCaps **caps, GSList **headers, gint nchannels, gint sample_rate, const GstTagList *tags);
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G_END_DECLS
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#endif /* __GST_OPUS_HEADER_H__ */
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