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585 lines
18 KiB
C
585 lines
18 KiB
C
/* Schrodinger
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* Copyright (C) 2006 David Schleef <ds@schleef.org>
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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/gst.h>
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#include <gst/base/gstadapter.h>
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#include <gst/video/video.h>
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#include <gst/video/gstbasevideoparse.h>
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#include <string.h>
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#include <schroedinger/schro.h>
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#include <math.h>
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#include <schroedinger/schroparse.h>
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GST_DEBUG_CATEGORY_EXTERN (schro_debug);
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#define GST_CAT_DEFAULT schro_debug
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#define GST_TYPE_SCHRO_PARSE \
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(gst_schro_parse_get_type())
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#define GST_SCHRO_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SCHRO_PARSE,GstSchroParse))
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#define GST_SCHRO_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SCHRO_PARSE,GstSchroParseClass))
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#define GST_IS_SCHRO_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SCHRO_PARSE))
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#define GST_IS_SCHRO_PARSE_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SCHRO_PARSE))
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typedef struct _GstSchroParse GstSchroParse;
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typedef struct _GstSchroParseClass GstSchroParseClass;
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typedef enum
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{
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GST_SCHRO_PARSE_OUTPUT_OGG,
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GST_SCHRO_PARSE_OUTPUT_QUICKTIME,
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GST_SCHRO_PARSE_OUTPUT_AVI,
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GST_SCHRO_PARSE_OUTPUT_MPEG_TS,
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GST_SCHRO_PARSE_OUTPUT_MP4
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} GstSchroParseOutputType;
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struct _GstSchroParse
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{
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GstBaseVideoParse base_video_parse;
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GstPad *sinkpad, *srcpad;
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GstSchroParseOutputType output_format;
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GstBuffer *seq_header_buffer;
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/* state */
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gboolean have_picture;
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int buf_picture_number;
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int seq_hdr_picture_number;
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int picture_number;
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guint64 last_granulepos;
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int bytes_per_picture;
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};
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struct _GstSchroParseClass
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{
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GstBaseVideoParseClass base_video_parse_class;
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};
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GType gst_schro_parse_get_type (void);
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/* GstSchroParse signals and args */
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enum
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{
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LAST_SIGNAL
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};
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enum
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{
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ARG_0
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};
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static gboolean gst_schro_parse_start (GstBaseVideoParse * base_video_parse);
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static gboolean gst_schro_parse_stop (GstBaseVideoParse * base_video_parse);
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static gboolean gst_schro_parse_reset (GstBaseVideoParse * base_video_parse);
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static int gst_schro_parse_scan_for_sync (GstAdapter * adapter,
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gboolean at_eos, int offset, int n);
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static gboolean gst_schro_parse_parse_data (GstBaseVideoParse *
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base_video_parse, gboolean at_eos);
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static gboolean gst_schro_parse_shape_output (GstBaseVideoParse *
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base_video_parse, GstVideoFrame * frame);
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static GstCaps *gst_schro_parse_get_caps (GstBaseVideoParse * base_video_parse);
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static GstStaticPadTemplate gst_schro_parse_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 ("video/x-dirac")
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);
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static GstStaticPadTemplate gst_schro_parse_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
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("video/x-dirac;video/x-qt-part;video/x-avi-part;video/x-mp4-part")
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);
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GST_BOILERPLATE (GstSchroParse, gst_schro_parse, GstBaseVideoParse,
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GST_TYPE_BASE_VIDEO_PARSE);
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static void
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gst_schro_parse_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_schro_parse_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_schro_parse_sink_template));
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gst_element_class_set_details_simple (element_class, "Dirac Parser",
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"Codec/Parser/Video",
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"Parse Dirac streams", "David Schleef <ds@schleef.org>");
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}
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static void
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gst_schro_parse_class_init (GstSchroParseClass * klass)
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{
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GstBaseVideoParseClass *base_video_parse_class;
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base_video_parse_class = GST_BASE_VIDEO_PARSE_CLASS (klass);
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base_video_parse_class->start = GST_DEBUG_FUNCPTR (gst_schro_parse_start);
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base_video_parse_class->stop = GST_DEBUG_FUNCPTR (gst_schro_parse_stop);
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base_video_parse_class->reset = GST_DEBUG_FUNCPTR (gst_schro_parse_reset);
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base_video_parse_class->parse_data =
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GST_DEBUG_FUNCPTR (gst_schro_parse_parse_data);
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base_video_parse_class->shape_output =
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GST_DEBUG_FUNCPTR (gst_schro_parse_shape_output);
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base_video_parse_class->scan_for_sync =
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GST_DEBUG_FUNCPTR (gst_schro_parse_scan_for_sync);
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base_video_parse_class->get_caps =
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GST_DEBUG_FUNCPTR (gst_schro_parse_get_caps);
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}
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static void
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gst_schro_parse_init (GstSchroParse * schro_parse, GstSchroParseClass * klass)
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{
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GstBaseVideoParse *base_video_parse = GST_BASE_VIDEO_PARSE (schro_parse);
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GST_DEBUG ("gst_schro_parse_init");
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schro_parse->output_format = GST_SCHRO_PARSE_OUTPUT_OGG;
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base_video_parse->reorder_depth = 2;
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}
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static gboolean
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gst_schro_parse_reset (GstBaseVideoParse * base_video_parse)
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{
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GST_DEBUG ("reset");
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return TRUE;
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}
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static gboolean
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gst_schro_parse_start (GstBaseVideoParse * base_video_parse)
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{
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GstSchroParse *schro_parse = GST_SCHRO_PARSE (base_video_parse);
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GstCaps *caps;
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GstStructure *structure;
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GST_DEBUG ("start");
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caps =
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gst_pad_get_allowed_caps (GST_BASE_VIDEO_CODEC_SRC_PAD
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(base_video_parse));
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if (gst_caps_is_empty (caps)) {
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gst_caps_unref (caps);
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return FALSE;
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}
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structure = gst_caps_get_structure (caps, 0);
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if (gst_structure_has_name (structure, "video/x-dirac")) {
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schro_parse->output_format = GST_SCHRO_PARSE_OUTPUT_OGG;
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} else if (gst_structure_has_name (structure, "video/x-qt-part")) {
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schro_parse->output_format = GST_SCHRO_PARSE_OUTPUT_QUICKTIME;
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} else if (gst_structure_has_name (structure, "video/x-avi-part")) {
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schro_parse->output_format = GST_SCHRO_PARSE_OUTPUT_AVI;
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} else if (gst_structure_has_name (structure, "video/x-mpegts-part")) {
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schro_parse->output_format = GST_SCHRO_PARSE_OUTPUT_MPEG_TS;
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} else if (gst_structure_has_name (structure, "video/x-mp4-part")) {
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schro_parse->output_format = GST_SCHRO_PARSE_OUTPUT_MP4;
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} else {
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return FALSE;
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}
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gst_caps_unref (caps);
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return TRUE;
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}
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static gboolean
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gst_schro_parse_stop (GstBaseVideoParse * base_video_parse)
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{
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return TRUE;
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}
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static void
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parse_sequence_header (GstSchroParse * schro_parse, guint8 * data, int size)
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{
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SchroVideoFormat video_format;
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int ret;
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GstVideoState *state;
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GST_DEBUG ("parse_sequence_header size=%d", size);
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state = gst_base_video_parse_get_state (GST_BASE_VIDEO_PARSE (schro_parse));
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schro_parse->seq_header_buffer = gst_buffer_new_and_alloc (size);
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memcpy (GST_BUFFER_DATA (schro_parse->seq_header_buffer), data, size);
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ret = schro_parse_decode_sequence_header (data + 13, size - 13,
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&video_format);
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if (ret) {
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state->fps_n = video_format.frame_rate_numerator;
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state->fps_d = video_format.frame_rate_denominator;
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GST_DEBUG ("Frame rate is %d/%d", state->fps_n, state->fps_d);
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state->width = video_format.width;
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state->height = video_format.height;
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GST_DEBUG ("Frame dimensions are %d x %d\n", state->width, state->height);
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state->clean_width = video_format.clean_width;
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state->clean_height = video_format.clean_height;
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state->clean_offset_left = video_format.left_offset;
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state->clean_offset_top = video_format.top_offset;
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state->par_n = video_format.aspect_ratio_numerator;
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state->par_d = video_format.aspect_ratio_denominator;
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GST_DEBUG ("Pixel aspect ratio is %d/%d", state->par_n, state->par_d);
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gst_base_video_parse_set_state (GST_BASE_VIDEO_PARSE (schro_parse), state);
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} else {
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GST_WARNING ("Failed to get frame rate from sequence header");
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}
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}
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static int
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gst_schro_parse_scan_for_sync (GstAdapter * adapter, gboolean at_eos,
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int offset, int n)
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{
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int n_available = gst_adapter_available (adapter) - offset;
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if (n_available < 4) {
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if (at_eos) {
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return n_available;
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} else {
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return 0;
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}
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}
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n_available -= 3;
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return gst_adapter_masked_scan_uint32 (adapter, 0xffffffff, 0x42424344,
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offset, MIN (n, n_available - 3));
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}
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static GstFlowReturn
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gst_schro_parse_parse_data (GstBaseVideoParse * base_video_parse,
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gboolean at_eos)
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{
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GstSchroParse *schro_parse;
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unsigned char header[SCHRO_PARSE_HEADER_SIZE];
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int next;
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int prev;
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int parse_code;
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GST_DEBUG ("parse_data");
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schro_parse = GST_SCHRO_PARSE (base_video_parse);
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if (gst_adapter_available (base_video_parse->input_adapter) <
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SCHRO_PARSE_HEADER_SIZE) {
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return GST_BASE_VIDEO_PARSE_FLOW_NEED_DATA;
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}
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GST_DEBUG ("available %d",
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gst_adapter_available (base_video_parse->input_adapter));
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gst_adapter_copy (base_video_parse->input_adapter, header, 0,
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SCHRO_PARSE_HEADER_SIZE);
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parse_code = header[4];
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next = GST_READ_UINT32_BE (header + 5);
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prev = GST_READ_UINT32_BE (header + 9);
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GST_DEBUG ("%08x %02x %08x %08x",
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GST_READ_UINT32_BE (header), parse_code, next, prev);
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if (memcmp (header, "BBCD", 4) != 0 ||
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(next & 0xf0000000) || (prev & 0xf0000000)) {
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gst_base_video_parse_lost_sync (base_video_parse);
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return GST_BASE_VIDEO_PARSE_FLOW_NEED_DATA;
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}
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if (SCHRO_PARSE_CODE_IS_END_OF_SEQUENCE (parse_code)) {
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GstVideoFrame *frame;
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if (next != 0 && next != SCHRO_PARSE_HEADER_SIZE) {
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GST_WARNING ("next is not 0 or 13 in EOS packet (%d)", next);
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}
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gst_base_video_parse_add_to_frame (base_video_parse,
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SCHRO_PARSE_HEADER_SIZE);
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frame = gst_base_video_parse_get_frame (base_video_parse);
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frame->is_eos = TRUE;
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SCHRO_DEBUG ("eos");
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return gst_base_video_parse_finish_frame (base_video_parse);
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}
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if (gst_adapter_available (base_video_parse->input_adapter) < next) {
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return GST_BASE_VIDEO_PARSE_FLOW_NEED_DATA;
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}
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if (SCHRO_PARSE_CODE_IS_SEQ_HEADER (parse_code)) {
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guint8 *data;
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data = g_malloc (next);
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gst_adapter_copy (base_video_parse->input_adapter, data, 0, next);
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parse_sequence_header (schro_parse, data, next);
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base_video_parse->current_frame->is_sync_point = TRUE;
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g_free (data);
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}
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if (schro_parse->seq_header_buffer == NULL) {
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gst_adapter_flush (base_video_parse->input_adapter, next);
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return GST_FLOW_OK;
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}
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if (SCHRO_PARSE_CODE_IS_PICTURE (parse_code)) {
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GstVideoFrame *frame;
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guint8 tmp[4];
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frame = gst_base_video_parse_get_frame (base_video_parse);
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#if 0
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if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_TIMESTAMP (buf))) {
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frame->presentation_timestamp = GST_BUFFER_TIMESTAMP (buf);
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}
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#endif
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gst_adapter_copy (base_video_parse->input_adapter, tmp,
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SCHRO_PARSE_HEADER_SIZE, 4);
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frame->presentation_frame_number = GST_READ_UINT32_BE (tmp);
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gst_base_video_parse_add_to_frame (base_video_parse, next);
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return gst_base_video_parse_finish_frame (base_video_parse);
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} else {
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gst_base_video_parse_add_to_frame (base_video_parse, next);
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}
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_schro_parse_shape_output_ogg (GstBaseVideoParse * base_video_parse,
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GstVideoFrame * frame)
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{
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GstSchroParse *schro_parse;
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int dpn;
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int delay;
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int dist;
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int pt;
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int dt;
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guint64 granulepos_hi;
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guint64 granulepos_low;
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GstBuffer *buf = frame->src_buffer;
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schro_parse = GST_SCHRO_PARSE (base_video_parse);
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dpn = frame->decode_frame_number;
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pt = frame->presentation_frame_number * 2;
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dt = frame->decode_frame_number * 2;
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delay = pt - dt;
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dist = frame->distance_from_sync;
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GST_DEBUG ("sys %d dpn %d pt %d dt %d delay %d dist %d",
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(int) frame->system_frame_number,
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(int) frame->decode_frame_number, pt, dt, delay, dist);
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granulepos_hi = (((guint64) pt - delay) << 9) | ((dist >> 8));
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granulepos_low = (delay << 9) | (dist & 0xff);
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GST_DEBUG ("granulepos %" G_GINT64_FORMAT ":%" G_GINT64_FORMAT, granulepos_hi,
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granulepos_low);
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if (frame->is_eos) {
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GST_BUFFER_OFFSET_END (buf) = schro_parse->last_granulepos;
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} else {
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schro_parse->last_granulepos = (granulepos_hi << 22) | (granulepos_low);
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GST_BUFFER_OFFSET_END (buf) = schro_parse->last_granulepos;
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}
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return gst_base_video_parse_push (base_video_parse, buf);
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}
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static GstFlowReturn
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gst_schro_parse_shape_output_quicktime (GstBaseVideoParse * base_video_parse,
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GstVideoFrame * frame)
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{
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GstBuffer *buf = frame->src_buffer;
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const GstVideoState *state;
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state = gst_base_video_parse_get_state (base_video_parse);
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GST_BUFFER_OFFSET_END (buf) = gst_video_state_get_timestamp (state,
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&base_video_parse->segment, frame->system_frame_number);
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if (frame->is_sync_point &&
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frame->presentation_frame_number == frame->system_frame_number) {
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GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
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GST_DEBUG ("sync point");
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} else {
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GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
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}
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return gst_base_video_parse_push (base_video_parse, buf);
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}
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static GstFlowReturn
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gst_schro_parse_shape_output_mpeg_ts (GstBaseVideoParse * base_video_parse,
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GstVideoFrame * frame)
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{
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GstBuffer *buf = frame->src_buffer;
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return gst_base_video_parse_push (base_video_parse, buf);
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}
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static GstFlowReturn
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gst_schro_parse_shape_output (GstBaseVideoParse * base_video_parse,
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GstVideoFrame * frame)
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{
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GstSchroParse *schro_parse;
|
|
|
|
schro_parse = GST_SCHRO_PARSE (base_video_parse);
|
|
|
|
switch (schro_parse->output_format) {
|
|
case GST_SCHRO_PARSE_OUTPUT_OGG:
|
|
return gst_schro_parse_shape_output_ogg (base_video_parse, frame);
|
|
case GST_SCHRO_PARSE_OUTPUT_QUICKTIME:
|
|
return gst_schro_parse_shape_output_quicktime (base_video_parse, frame);
|
|
case GST_SCHRO_PARSE_OUTPUT_MPEG_TS:
|
|
return gst_schro_parse_shape_output_mpeg_ts (base_video_parse, frame);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_schro_parse_get_caps (GstBaseVideoParse * base_video_parse)
|
|
{
|
|
GstCaps *caps;
|
|
GstVideoState *state;
|
|
GstSchroParse *schro_parse;
|
|
|
|
schro_parse = GST_SCHRO_PARSE (base_video_parse);
|
|
|
|
state = gst_base_video_parse_get_state (base_video_parse);
|
|
|
|
if (schro_parse->output_format == GST_SCHRO_PARSE_OUTPUT_OGG) {
|
|
caps = gst_caps_new_simple ("video/x-dirac",
|
|
"width", G_TYPE_INT, state->width,
|
|
"height", G_TYPE_INT, state->height,
|
|
"framerate", GST_TYPE_FRACTION, state->fps_n,
|
|
state->fps_d,
|
|
"pixel-aspect-ratio", GST_TYPE_FRACTION, state->par_n,
|
|
state->par_d, NULL);
|
|
|
|
GST_BUFFER_FLAG_SET (schro_parse->seq_header_buffer,
|
|
GST_BUFFER_FLAG_IN_CAPS);
|
|
|
|
{
|
|
GValue array = { 0 };
|
|
GValue value = { 0 };
|
|
GstBuffer *buf;
|
|
int size;
|
|
|
|
g_value_init (&array, GST_TYPE_ARRAY);
|
|
g_value_init (&value, GST_TYPE_BUFFER);
|
|
size = GST_BUFFER_SIZE (schro_parse->seq_header_buffer);
|
|
buf = gst_buffer_new_and_alloc (size + SCHRO_PARSE_HEADER_SIZE);
|
|
memcpy (GST_BUFFER_DATA (buf),
|
|
GST_BUFFER_DATA (schro_parse->seq_header_buffer), size);
|
|
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf) + size + 0, 0x42424344);
|
|
GST_WRITE_UINT8 (GST_BUFFER_DATA (buf) + size + 4,
|
|
SCHRO_PARSE_CODE_END_OF_SEQUENCE);
|
|
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf) + size + 5, 0);
|
|
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf) + size + 9, size);
|
|
gst_value_set_buffer (&value, buf);
|
|
gst_buffer_unref (buf);
|
|
gst_value_array_append_value (&array, &value);
|
|
gst_structure_set_value (gst_caps_get_structure (caps, 0),
|
|
"streamheader", &array);
|
|
g_value_unset (&value);
|
|
g_value_unset (&array);
|
|
}
|
|
} else if (schro_parse->output_format == GST_SCHRO_PARSE_OUTPUT_QUICKTIME) {
|
|
caps = gst_caps_new_simple ("video/x-qt-part",
|
|
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('d', 'r', 'a', 'c'),
|
|
"width", G_TYPE_INT, state->width,
|
|
"height", G_TYPE_INT, state->height,
|
|
"framerate", GST_TYPE_FRACTION, state->fps_n,
|
|
state->fps_d,
|
|
"pixel-aspect-ratio", GST_TYPE_FRACTION, state->par_n,
|
|
state->par_d, NULL);
|
|
} else if (schro_parse->output_format == GST_SCHRO_PARSE_OUTPUT_AVI) {
|
|
caps = gst_caps_new_simple ("video/x-avi-part",
|
|
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('d', 'r', 'a', 'c'),
|
|
"width", G_TYPE_INT, state->width,
|
|
"height", G_TYPE_INT, state->height,
|
|
"framerate", GST_TYPE_FRACTION, state->fps_n,
|
|
state->fps_d,
|
|
"pixel-aspect-ratio", GST_TYPE_FRACTION, state->par_n,
|
|
state->par_d, NULL);
|
|
} else if (schro_parse->output_format == GST_SCHRO_PARSE_OUTPUT_MPEG_TS) {
|
|
caps = gst_caps_new_simple ("video/x-mpegts-part",
|
|
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('d', 'r', 'a', 'c'),
|
|
"width", G_TYPE_INT, state->width,
|
|
"height", G_TYPE_INT, state->height,
|
|
"framerate", GST_TYPE_FRACTION, state->fps_n,
|
|
state->fps_d,
|
|
"pixel-aspect-ratio", GST_TYPE_FRACTION, state->par_n,
|
|
state->par_d, NULL);
|
|
} else if (schro_parse->output_format == GST_SCHRO_PARSE_OUTPUT_MP4) {
|
|
caps = gst_caps_new_simple ("video/x-mp4-part",
|
|
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('d', 'r', 'a', 'c'),
|
|
"width", G_TYPE_INT, state->width,
|
|
"height", G_TYPE_INT, state->height,
|
|
"framerate", GST_TYPE_FRACTION, state->fps_n,
|
|
state->fps_d,
|
|
"pixel-aspect-ratio", GST_TYPE_FRACTION, state->par_n,
|
|
state->par_d, NULL);
|
|
} else {
|
|
g_assert_not_reached ();
|
|
}
|
|
|
|
return caps;
|
|
}
|