summaryrefslogtreecommitdiff
path: root/ext/ogg/gstoggaviparse.c
diff options
context:
space:
mode:
Diffstat (limited to 'ext/ogg/gstoggaviparse.c')
-rw-r--r--ext/ogg/gstoggaviparse.c477
1 files changed, 0 insertions, 477 deletions
diff --git a/ext/ogg/gstoggaviparse.c b/ext/ogg/gstoggaviparse.c
deleted file mode 100644
index 4b51e01e..00000000
--- a/ext/ogg/gstoggaviparse.c
+++ /dev/null
@@ -1,477 +0,0 @@
-/* GStreamer
- * Copyright (C) 2006 Wim Taymans <wim@fluendo.com>
- *
- * gstoggaviparse.c: ogg avi stream parser
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-/*
- * Ogg in AVI is mostly done for vorbis audio. In the codec_data we receive the
- * first 3 packets of the raw vorbis data. On the sinkpad we receive full-blown Ogg
- * pages.
- * Before extracting the packets out of the ogg pages, we push the raw vorbis
- * header packets to the decoder.
- * We don't use the incomming timestamps but use the ganulepos on the ogg pages
- * directly.
- * This parser only does ogg/vorbis for now.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include <gst/gst.h>
-#include <ogg/ogg.h>
-#include <string.h>
-
-static const GstElementDetails gst_ogg_avi_parse_details =
-GST_ELEMENT_DETAILS ("Ogg AVI parser",
- "Codec/Parser",
- "parse an ogg avi stream into pages (info about ogg: http://xiph.org)",
- "Wim Taymans <wim@fluendo.com>");
-
-GST_DEBUG_CATEGORY_STATIC (gst_ogg_avi_parse_debug);
-#define GST_CAT_DEFAULT gst_ogg_avi_parse_debug
-
-#define GST_TYPE_OGG_AVI_PARSE (gst_ogg_avi_parse_get_type())
-#define GST_OGG_AVI_PARSE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OGG_AVI_PARSE, GstOggAviParse))
-#define GST_OGG_AVI_PARSE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OGG_AVI_PARSE, GstOggAviParse))
-#define GST_IS_OGG_AVI_PARSE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OGG_AVI_PARSE))
-#define GST_IS_OGG_AVI_PARSE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OGG_AVI_PARSE))
-
-static GType gst_ogg_avi_parse_get_type (void);
-
-typedef struct _GstOggAviParse GstOggAviParse;
-typedef struct _GstOggAviParseClass GstOggAviParseClass;
-
-struct _GstOggAviParse
-{
- GstElement element;
-
- GstPad *sinkpad;
- GstPad *srcpad;
-
- gboolean discont;
- gint serial;
-
- ogg_sync_state sync;
- ogg_stream_state stream;
-};
-
-struct _GstOggAviParseClass
-{
- GstElementClass parent_class;
-};
-
-static void gst_ogg_avi_parse_base_init (gpointer g_class);
-static void gst_ogg_avi_parse_class_init (GstOggAviParseClass * klass);
-static void gst_ogg_avi_parse_init (GstOggAviParse * ogg);
-static GstElementClass *parent_class = NULL;
-
-static GType
-gst_ogg_avi_parse_get_type (void)
-{
- static GType ogg_avi_parse_type = 0;
-
- if (!ogg_avi_parse_type) {
- static const GTypeInfo ogg_avi_parse_info = {
- sizeof (GstOggAviParseClass),
- gst_ogg_avi_parse_base_init,
- NULL,
- (GClassInitFunc) gst_ogg_avi_parse_class_init,
- NULL,
- NULL,
- sizeof (GstOggAviParse),
- 0,
- (GInstanceInitFunc) gst_ogg_avi_parse_init,
- };
-
- ogg_avi_parse_type =
- g_type_register_static (GST_TYPE_ELEMENT, "GstOggAviParse",
- &ogg_avi_parse_info, 0);
- }
- return ogg_avi_parse_type;
-}
-
-enum
-{
- PROP_0
-};
-
-static GstStaticPadTemplate ogg_avi_parse_src_template_factory =
-GST_STATIC_PAD_TEMPLATE ("src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("audio/x-vorbis")
- );
-
-static GstStaticPadTemplate ogg_avi_parse_sink_template_factory =
-GST_STATIC_PAD_TEMPLATE ("sink",
- GST_PAD_SINK,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS ("application/x-ogg-avi")
- );
-
-static void gst_ogg_avi_parse_finalize (GObject * object);
-static GstStateChangeReturn gst_ogg_avi_parse_change_state (GstElement *
- element, GstStateChange transition);
-static gboolean gst_ogg_avi_parse_event (GstPad * pad, GstEvent * event);
-static GstFlowReturn gst_ogg_avi_parse_chain (GstPad * pad, GstBuffer * buffer);
-static gboolean gst_ogg_avi_parse_setcaps (GstPad * pad, GstCaps * caps);
-
-static void
-gst_ogg_avi_parse_base_init (gpointer g_class)
-{
- GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
-
- gst_element_class_set_details (element_class, &gst_ogg_avi_parse_details);
-
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&ogg_avi_parse_sink_template_factory));
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&ogg_avi_parse_src_template_factory));
-}
-
-static void
-gst_ogg_avi_parse_class_init (GstOggAviParseClass * klass)
-{
- GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
- GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
-
- parent_class = g_type_class_peek_parent (klass);
-
- gstelement_class->change_state = gst_ogg_avi_parse_change_state;
-
- gobject_class->finalize = gst_ogg_avi_parse_finalize;
-}
-
-static void
-gst_ogg_avi_parse_init (GstOggAviParse * ogg)
-{
- /* create the sink and source pads */
- ogg->sinkpad =
- gst_pad_new_from_static_template (&ogg_avi_parse_sink_template_factory,
- "sink");
- gst_pad_set_setcaps_function (ogg->sinkpad, gst_ogg_avi_parse_setcaps);
- gst_pad_set_event_function (ogg->sinkpad, gst_ogg_avi_parse_event);
- gst_pad_set_chain_function (ogg->sinkpad, gst_ogg_avi_parse_chain);
- gst_element_add_pad (GST_ELEMENT (ogg), ogg->sinkpad);
-
- ogg->srcpad =
- gst_pad_new_from_static_template (&ogg_avi_parse_src_template_factory,
- "src");
- gst_pad_use_fixed_caps (ogg->srcpad);
- gst_element_add_pad (GST_ELEMENT (ogg), ogg->srcpad);
-}
-
-static void
-gst_ogg_avi_parse_finalize (GObject * object)
-{
- GstOggAviParse *ogg = GST_OGG_AVI_PARSE (object);
-
- GST_LOG_OBJECT (ogg, "Disposing of object %p", ogg);
-
- ogg_sync_clear (&ogg->sync);
- ogg_stream_clear (&ogg->stream);
-
- G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static gboolean
-gst_ogg_avi_parse_setcaps (GstPad * pad, GstCaps * caps)
-{
- GstOggAviParse *ogg;
- GstStructure *structure;
- const GValue *codec_data;
- GstBuffer *buffer;
- guint8 *data;
- guint size;
- guint32 sizes[3];
- GstCaps *outcaps;
- gint i, offs;
-
- ogg = GST_OGG_AVI_PARSE (GST_OBJECT_PARENT (pad));
-
- structure = gst_caps_get_structure (caps, 0);
-
- /* take codec data */
- codec_data = gst_structure_get_value (structure, "codec_data");
- if (codec_data == NULL)
- goto no_data;
-
- /* only buffers are valid */
- if (G_VALUE_TYPE (codec_data) != GST_TYPE_BUFFER)
- goto wrong_format;
-
- /* Now parse the data */
- buffer = gst_value_get_buffer (codec_data);
-
- /* first 22 bytes are bits_per_sample, channel_mask, GUID
- * Then we get 3 LE guint32 with the 3 header sizes
- * then we get the bytes of the 3 headers. */
- data = GST_BUFFER_DATA (buffer);
- size = GST_BUFFER_SIZE (buffer);
-
- GST_LOG_OBJECT (ogg, "configuring codec_data of size %u", size);
-
- /* skip headers */
- data += 22;
- size -= 22;
-
- /* we need at least 12 bytes for the packet sizes of the 3 headers */
- if (size < 12)
- goto buffer_too_small;
-
- /* read sizes of the 3 headers */
- sizes[0] = GST_READ_UINT32_LE (data);
- sizes[1] = GST_READ_UINT32_LE (data + 4);
- sizes[2] = GST_READ_UINT32_LE (data + 8);
-
- GST_DEBUG_OBJECT (ogg, "header sizes: %u %u %u", sizes[0], sizes[1],
- sizes[2]);
-
- size -= 12;
-
- /* and we need at least enough data for all the headers */
- if (size < sizes[0] + sizes[1] + sizes[2])
- goto buffer_too_small;
-
- /* set caps */
- outcaps = gst_caps_new_simple ("audio/x-vorbis", NULL);
- gst_pad_set_caps (ogg->srcpad, outcaps);
-
- /* copy header data */
- offs = 34;
- for (i = 0; i < 3; i++) {
- GstBuffer *out;
-
- /* now output the raw vorbis header packets */
- out = gst_buffer_create_sub (buffer, offs, sizes[i]);
- gst_buffer_set_caps (out, outcaps);
- gst_pad_push (ogg->srcpad, out);
-
- offs += sizes[i];
- }
- gst_caps_unref (outcaps);
-
- return TRUE;
-
- /* ERRORS */
-no_data:
- {
- GST_DEBUG_OBJECT (ogg, "no codec_data found in caps");
- return FALSE;
- }
-wrong_format:
- {
- GST_DEBUG_OBJECT (ogg, "codec_data is not a buffer");
- return FALSE;
- }
-buffer_too_small:
- {
- GST_DEBUG_OBJECT (ogg, "codec_data is too small");
- return FALSE;
- }
-}
-
-static gboolean
-gst_ogg_avi_parse_event (GstPad * pad, GstEvent * event)
-{
- GstOggAviParse *ogg;
- gboolean ret;
-
- ogg = GST_OGG_AVI_PARSE (GST_OBJECT_PARENT (pad));
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_FLUSH_START:
- ret = gst_pad_push_event (ogg->srcpad, event);
- break;
- case GST_EVENT_FLUSH_STOP:
- ogg_sync_reset (&ogg->sync);
- ogg_stream_reset (&ogg->stream);
- ogg->discont = TRUE;
- ret = gst_pad_push_event (ogg->srcpad, event);
- break;
- default:
- ret = gst_pad_push_event (ogg->srcpad, event);
- break;
- }
- return ret;
-}
-
-static GstFlowReturn
-gst_ogg_avi_parse_push_packet (GstOggAviParse * ogg, ogg_packet * packet)
-{
- GstBuffer *buffer;
- GstFlowReturn result;
-
- /* allocate space for header and body */
- buffer = gst_buffer_new_and_alloc (packet->bytes);
- memcpy (GST_BUFFER_DATA (buffer), packet->packet, packet->bytes);
-
- GST_LOG_OBJECT (ogg, "created buffer %p from page", buffer);
-
- GST_BUFFER_OFFSET_END (buffer) = packet->granulepos;
-
- if (ogg->discont) {
- GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
- ogg->discont = FALSE;
- }
-
- result = gst_pad_push (ogg->srcpad, buffer);
-
- return result;
-}
-
-static GstFlowReturn
-gst_ogg_avi_parse_chain (GstPad * pad, GstBuffer * buffer)
-{
- GstFlowReturn result = GST_FLOW_OK;
- GstOggAviParse *ogg;
- guint8 *data;
- guint size;
- gchar *oggbuf;
- gint ret = -1;
-
- ogg = GST_OGG_AVI_PARSE (GST_OBJECT_PARENT (pad));
-
- data = GST_BUFFER_DATA (buffer);
- size = GST_BUFFER_SIZE (buffer);
-
- GST_LOG_OBJECT (ogg, "Chain function received buffer of size %d", size);
-
- if (GST_BUFFER_IS_DISCONT (buffer)) {
- ogg_sync_reset (&ogg->sync);
- ogg->discont = TRUE;
- }
-
- /* write data to sync layer */
- oggbuf = ogg_sync_buffer (&ogg->sync, size);
- memcpy (oggbuf, data, size);
- ogg_sync_wrote (&ogg->sync, size);
- gst_buffer_unref (buffer);
-
- /* try to get as many packets out of the stream as possible */
- do {
- ogg_page page;
-
- /* try to swap out a page */
- ret = ogg_sync_pageout (&ogg->sync, &page);
- if (ret == 0) {
- GST_DEBUG_OBJECT (ogg, "need more data");
- break;
- } else if (ret == -1) {
- GST_DEBUG_OBJECT (ogg, "discont in pages");
- ogg->discont = TRUE;
- } else {
- /* new unknown stream, init the ogg stream with the serial number of the
- * page. */
- if (ogg->serial == -1) {
- ogg->serial = ogg_page_serialno (&page);
- ogg_stream_init (&ogg->stream, ogg->serial);
- }
-
- /* submit page */
- if (ogg_stream_pagein (&ogg->stream, &page) != 0) {
- GST_WARNING_OBJECT (ogg, "ogg stream choked on page resetting stream");
- ogg_sync_reset (&ogg->sync);
- ogg->discont = TRUE;
- continue;
- }
-
- /* try to get as many packets as possible out of the page */
- do {
- ogg_packet packet;
-
- ret = ogg_stream_packetout (&ogg->stream, &packet);
- GST_LOG_OBJECT (ogg, "packetout gave %d", ret);
- switch (ret) {
- case 0:
- break;
- case -1:
- /* out of sync, We mark a DISCONT. */
- ogg->discont = TRUE;
- break;
- case 1:
- result = gst_ogg_avi_parse_push_packet (ogg, &packet);
- if (GST_FLOW_IS_FATAL (result))
- goto done;
- break;
- default:
- GST_WARNING_OBJECT (ogg,
- "invalid return value %d for ogg_stream_packetout, resetting stream",
- ret);
- break;
- }
- }
- while (ret != 0);
- }
- }
- while (ret != 0);
-
-done:
- return result;
-}
-
-static GstStateChangeReturn
-gst_ogg_avi_parse_change_state (GstElement * element, GstStateChange transition)
-{
- GstOggAviParse *ogg;
- GstStateChangeReturn result = GST_STATE_CHANGE_FAILURE;
-
- ogg = GST_OGG_AVI_PARSE (element);
-
- switch (transition) {
- case GST_STATE_CHANGE_NULL_TO_READY:
- ogg_sync_init (&ogg->sync);
- break;
- case GST_STATE_CHANGE_READY_TO_PAUSED:
- ogg_sync_reset (&ogg->sync);
- ogg_stream_reset (&ogg->stream);
- ogg->serial = -1;
- ogg->discont = TRUE;
- break;
- case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
- break;
- default:
- break;
- }
-
- result = parent_class->change_state (element, transition);
-
- switch (transition) {
- case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
- break;
- case GST_STATE_CHANGE_PAUSED_TO_READY:
- break;
- case GST_STATE_CHANGE_READY_TO_NULL:
- ogg_sync_clear (&ogg->sync);
- break;
- default:
- break;
- }
- return result;
-}
-
-gboolean
-gst_ogg_avi_parse_plugin_init (GstPlugin * plugin)
-{
- GST_DEBUG_CATEGORY_INIT (gst_ogg_avi_parse_debug, "oggaviparse", 0,
- "ogg avi parser");
-
- return gst_element_register (plugin, "oggaviparse", GST_RANK_PRIMARY,
- GST_TYPE_OGG_AVI_PARSE);
-}