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630 lines
17 KiB
C
630 lines
17 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/gstbasevideodecoder.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 "gstschroutils.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_DEC \
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(gst_schro_dec_get_type())
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#define GST_SCHRO_DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SCHRO_DEC,GstSchroDec))
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#define GST_SCHRO_DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SCHRO_DEC,GstSchroDecClass))
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#define GST_IS_SCHRO_DEC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SCHRO_DEC))
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#define GST_IS_SCHRO_DEC_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SCHRO_DEC))
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typedef struct _GstSchroDec GstSchroDec;
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typedef struct _GstSchroDecClass GstSchroDecClass;
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struct _GstSchroDec
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{
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GstBaseVideoDecoder base_video_decoder;
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SchroDecoder *decoder;
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GstBuffer *seq_header_buffer;
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};
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struct _GstSchroDecClass
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{
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GstBaseVideoDecoderClass base_video_decoder_class;
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};
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GType gst_schro_dec_get_type (void);
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/* GstSchroDec 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 void gst_schro_dec_finalize (GObject * object);
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static gboolean gst_schro_dec_sink_query (GstPad * pad, GstQuery * query);
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static gboolean gst_schro_dec_start (GstBaseVideoDecoder * dec);
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static gboolean gst_schro_dec_stop (GstBaseVideoDecoder * dec);
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static gboolean gst_schro_dec_reset (GstBaseVideoDecoder * dec);
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static GstFlowReturn gst_schro_dec_parse_data (GstBaseVideoDecoder *
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base_video_decoder, gboolean at_eos);
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static GstFlowReturn gst_schro_dec_handle_frame (GstBaseVideoDecoder * decoder,
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GstVideoFrame * frame);
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static gboolean gst_schro_dec_finish (GstBaseVideoDecoder * base_video_decoder);
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static void gst_schrodec_send_tags (GstSchroDec * schro_dec);
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static GstStaticPadTemplate gst_schro_dec_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_dec_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_VIDEO_CAPS_YUV ("{ I420, YUY2, AYUV }"))
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);
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GST_BOILERPLATE (GstSchroDec, gst_schro_dec, GstBaseVideoDecoder,
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GST_TYPE_BASE_VIDEO_DECODER);
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static void
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gst_schro_dec_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_dec_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_dec_sink_template));
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gst_element_class_set_details_simple (element_class, "Dirac Decoder",
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"Codec/Decoder/Video",
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"Decode Dirac streams", "David Schleef <ds@schleef.org>");
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}
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static void
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gst_schro_dec_class_init (GstSchroDecClass * klass)
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{
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GObjectClass *gobject_class;
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GstBaseVideoDecoderClass *base_video_decoder_class;
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gobject_class = G_OBJECT_CLASS (klass);
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base_video_decoder_class = GST_BASE_VIDEO_DECODER_CLASS (klass);
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gobject_class->finalize = gst_schro_dec_finalize;
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base_video_decoder_class->start = GST_DEBUG_FUNCPTR (gst_schro_dec_start);
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base_video_decoder_class->stop = GST_DEBUG_FUNCPTR (gst_schro_dec_stop);
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base_video_decoder_class->reset = GST_DEBUG_FUNCPTR (gst_schro_dec_reset);
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base_video_decoder_class->parse_data =
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GST_DEBUG_FUNCPTR (gst_schro_dec_parse_data);
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base_video_decoder_class->handle_frame =
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GST_DEBUG_FUNCPTR (gst_schro_dec_handle_frame);
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base_video_decoder_class->finish = GST_DEBUG_FUNCPTR (gst_schro_dec_finish);
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gst_base_video_decoder_class_set_capture_pattern (base_video_decoder_class,
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0xffffffff, 0x42424344);
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}
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static void
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gst_schro_dec_init (GstSchroDec * schro_dec, GstSchroDecClass * klass)
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{
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GST_DEBUG ("gst_schro_dec_init");
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gst_pad_set_query_function (GST_BASE_VIDEO_CODEC_SINK_PAD (schro_dec),
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gst_schro_dec_sink_query);
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schro_dec->decoder = schro_decoder_new ();
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}
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#define OGG_DIRAC_GRANULE_SHIFT 22
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#define OGG_DIRAC_GRANULE_LOW_MASK ((1ULL<<OGG_DIRAC_GRANULE_SHIFT)-1)
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static gint64
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granulepos_to_frame (gint64 granulepos)
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{
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guint64 pt;
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if (granulepos == -1)
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return -1;
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pt = ((granulepos >> 22) + (granulepos & OGG_DIRAC_GRANULE_LOW_MASK)) >> 9;
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/* dist_h = (granulepos >> 22) & 0xff;
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* dist_l = granulepos & 0xff;
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* dist = (dist_h << 8) | dist_l;
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* delay = (granulepos >> 9) & 0x1fff;
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* dt = pt - delay; */
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return pt >> 1;
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}
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static gboolean
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gst_schro_dec_sink_convert (GstPad * pad,
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GstFormat src_format, gint64 src_value,
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GstFormat * dest_format, gint64 * dest_value)
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{
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gboolean res = TRUE;
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GstSchroDec *dec;
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GstVideoState *state;
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if (src_format == *dest_format) {
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*dest_value = src_value;
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return TRUE;
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}
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dec = GST_SCHRO_DEC (gst_pad_get_parent (pad));
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/* FIXME: check if we are in a decoding state */
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state = gst_base_video_decoder_get_state (GST_BASE_VIDEO_DECODER (dec));
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res = FALSE;
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if (src_format == GST_FORMAT_DEFAULT && *dest_format == GST_FORMAT_TIME) {
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if (state->fps_d != 0) {
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*dest_value = gst_util_uint64_scale (granulepos_to_frame (src_value),
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state->fps_d * GST_SECOND, state->fps_n);
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res = TRUE;
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} else {
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res = FALSE;
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}
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}
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gst_object_unref (dec);
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return res;
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}
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static gboolean
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gst_schro_dec_sink_query (GstPad * pad, GstQuery * query)
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{
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GstSchroDec *dec;
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gboolean res = FALSE;
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dec = GST_SCHRO_DEC (gst_pad_get_parent (pad));
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_CONVERT:
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{
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GstFormat src_fmt, dest_fmt;
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gint64 src_val, dest_val;
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gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
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res = gst_schro_dec_sink_convert (pad, src_fmt, src_val, &dest_fmt,
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&dest_val);
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if (!res)
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goto error;
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gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
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break;
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}
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default:
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res = gst_pad_query_default (pad, query);
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break;
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}
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done:
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gst_object_unref (dec);
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return res;
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error:
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GST_DEBUG_OBJECT (dec, "query failed");
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goto done;
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}
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static gboolean
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gst_schro_dec_start (GstBaseVideoDecoder * dec)
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{
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return TRUE;
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}
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static gboolean
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gst_schro_dec_stop (GstBaseVideoDecoder * dec)
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{
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return TRUE;
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}
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static gboolean
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gst_schro_dec_reset (GstBaseVideoDecoder * dec)
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{
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GstSchroDec *schro_dec;
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schro_dec = GST_SCHRO_DEC (dec);
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GST_DEBUG ("reset");
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if (schro_dec->decoder) {
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schro_decoder_reset (schro_dec->decoder);
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}
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return TRUE;
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}
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static void
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gst_schro_dec_finalize (GObject * object)
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{
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GstSchroDec *schro_dec;
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g_return_if_fail (GST_IS_SCHRO_DEC (object));
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schro_dec = GST_SCHRO_DEC (object);
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if (schro_dec->decoder) {
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schro_decoder_free (schro_dec->decoder);
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schro_dec->decoder = NULL;
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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parse_sequence_header (GstSchroDec * schro_dec, 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_OBJECT (schro_dec, "parse_sequence_header size=%d", size);
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state = gst_base_video_decoder_get_state (GST_BASE_VIDEO_DECODER (schro_dec));
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schro_dec->seq_header_buffer = gst_buffer_new_and_alloc (size);
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memcpy (GST_BUFFER_DATA (schro_dec->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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if (video_format.chroma_format == SCHRO_CHROMA_444) {
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state->format = GST_VIDEO_FORMAT_AYUV;
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} else if (video_format.chroma_format == SCHRO_CHROMA_422) {
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state->format = GST_VIDEO_FORMAT_YUY2;
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} else if (video_format.chroma_format == SCHRO_CHROMA_420) {
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state->format = GST_VIDEO_FORMAT_I420;
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}
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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_OBJECT (schro_dec, "Frame rate is %d/%d", state->fps_n,
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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_decoder_set_src_caps (GST_BASE_VIDEO_DECODER (schro_dec));
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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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gst_schrodec_send_tags (schro_dec);
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}
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static GstFlowReturn
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gst_schro_dec_parse_data (GstBaseVideoDecoder * base_video_decoder,
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gboolean at_eos)
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{
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GstSchroDec *schro_decoder;
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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_OBJECT (base_video_decoder, "parse_data");
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schro_decoder = GST_SCHRO_DEC (base_video_decoder);
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if (gst_adapter_available (base_video_decoder->input_adapter) <
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SCHRO_PARSE_HEADER_SIZE) {
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return GST_BASE_VIDEO_DECODER_FLOW_NEED_DATA;
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}
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GST_DEBUG ("available %d",
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gst_adapter_available (base_video_decoder->input_adapter));
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gst_adapter_copy (base_video_decoder->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_decoder_lost_sync (base_video_decoder);
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return GST_BASE_VIDEO_DECODER_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_decoder_add_to_frame (base_video_decoder,
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SCHRO_PARSE_HEADER_SIZE);
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frame = base_video_decoder->current_frame;
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frame->is_eos = TRUE;
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SCHRO_DEBUG ("eos");
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return gst_base_video_decoder_have_frame (base_video_decoder);
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}
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if (gst_adapter_available (base_video_decoder->input_adapter) < next) {
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return GST_BASE_VIDEO_DECODER_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_decoder->input_adapter, data, 0, next);
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parse_sequence_header (schro_decoder, data, next);
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gst_base_video_decoder_set_sync_point (base_video_decoder);
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#if 0
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if (GST_CLOCK_TIME_IS_VALID (base_video_decoder->last_sink_timestamp)) {
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base_video_decoder->current_frame->presentation_timestamp =
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base_video_decoder->last_sink_timestamp;
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GST_DEBUG ("got timestamp %" G_GINT64_FORMAT,
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base_video_decoder->last_sink_timestamp);
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} else if (base_video_decoder->last_sink_offset_end != -1) {
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GstVideoState *state;
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#if 0
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/* FIXME perhaps should use this to determine if the granulepos
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* is valid */
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{
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guint64 pt;
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int dist_h;
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int dist_l;
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int dist;
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int delay;
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guint64 dt;
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gint64 granulepos = base_video_decoder->last_sink_offset_end;
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pt = ((granulepos >> 22) +
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(granulepos & OGG_DIRAC_GRANULE_LOW_MASK)) >> 9;
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dist_h = (granulepos >> 22) & 0xff;
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dist_l = granulepos & 0xff;
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dist = (dist_h << 8) | dist_l;
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delay = (granulepos >> 9) & 0x1fff;
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dt = pt - delay;
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GST_DEBUG ("gp pt %lld dist %d delay %d dt %lld", pt, dist, delay, dt);
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}
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#endif
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state = gst_base_video_decoder_get_state (base_video_decoder);
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base_video_decoder->current_frame->presentation_timestamp =
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gst_util_uint64_scale (granulepos_to_frame
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(base_video_decoder->last_sink_offset_end), state->fps_d * GST_SECOND,
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state->fps_n);
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} else {
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base_video_decoder->current_frame->presentation_timestamp = -1;
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}
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#endif
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g_free (data);
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}
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if (schro_decoder->seq_header_buffer == NULL) {
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gst_adapter_flush (base_video_decoder->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 = base_video_decoder->current_frame;
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gst_adapter_copy (base_video_decoder->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_decoder_add_to_frame (base_video_decoder, next);
|
|
|
|
return gst_base_video_decoder_have_frame (base_video_decoder);
|
|
} else {
|
|
gst_base_video_decoder_add_to_frame (base_video_decoder, next);
|
|
}
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static void
|
|
gst_schrodec_send_tags (GstSchroDec * schro_dec)
|
|
{
|
|
GstTagList *list;
|
|
|
|
list = gst_tag_list_new ();
|
|
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
|
|
GST_TAG_VIDEO_CODEC, "Dirac", NULL);
|
|
|
|
gst_element_found_tags_for_pad (GST_ELEMENT_CAST (schro_dec),
|
|
GST_BASE_VIDEO_CODEC_SRC_PAD (schro_dec), list);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_schro_dec_process (GstSchroDec * schro_dec, gboolean eos)
|
|
{
|
|
gboolean go;
|
|
GstFlowReturn ret;
|
|
|
|
ret = GST_FLOW_OK;
|
|
go = TRUE;
|
|
while (go) {
|
|
int it;
|
|
|
|
it = schro_decoder_autoparse_wait (schro_dec->decoder);
|
|
|
|
switch (it) {
|
|
case SCHRO_DECODER_FIRST_ACCESS_UNIT:
|
|
break;
|
|
case SCHRO_DECODER_NEED_BITS:
|
|
GST_DEBUG ("need bits");
|
|
go = 0;
|
|
break;
|
|
case SCHRO_DECODER_NEED_FRAME:
|
|
{
|
|
GstBuffer *outbuf;
|
|
GstVideoState *state;
|
|
SchroFrame *schro_frame;
|
|
|
|
GST_DEBUG ("need frame");
|
|
|
|
state =
|
|
gst_base_video_decoder_get_state (GST_BASE_VIDEO_DECODER
|
|
(schro_dec));
|
|
outbuf =
|
|
gst_base_video_decoder_alloc_src_buffer (GST_BASE_VIDEO_DECODER
|
|
(schro_dec));
|
|
schro_frame =
|
|
gst_schro_buffer_wrap (outbuf, state->format, state->width,
|
|
state->height);
|
|
schro_decoder_add_output_picture (schro_dec->decoder, schro_frame);
|
|
break;
|
|
}
|
|
case SCHRO_DECODER_OK:
|
|
{
|
|
SchroFrame *schro_frame;
|
|
SchroTag *tag;
|
|
GstVideoFrame *frame;
|
|
|
|
GST_DEBUG ("got frame");
|
|
|
|
tag = schro_decoder_get_picture_tag (schro_dec->decoder);
|
|
schro_frame = schro_decoder_pull (schro_dec->decoder);
|
|
frame = tag->value;
|
|
|
|
if (schro_frame) {
|
|
if (schro_frame->priv) {
|
|
GstFlowReturn flow_ret;
|
|
|
|
frame->src_buffer = gst_buffer_ref (GST_BUFFER (schro_frame->priv));
|
|
|
|
flow_ret =
|
|
gst_base_video_decoder_finish_frame (GST_BASE_VIDEO_DECODER
|
|
(schro_dec), frame);
|
|
if (flow_ret != GST_FLOW_OK) {
|
|
GST_DEBUG ("finish frame returned %d", flow_ret);
|
|
return flow_ret;
|
|
}
|
|
} else {
|
|
GST_DEBUG ("skipped frame");
|
|
}
|
|
|
|
schro_frame_unref (schro_frame);
|
|
}
|
|
if (!eos) {
|
|
go = FALSE;
|
|
}
|
|
}
|
|
|
|
break;
|
|
case SCHRO_DECODER_EOS:
|
|
GST_DEBUG ("eos");
|
|
go = FALSE;
|
|
break;
|
|
case SCHRO_DECODER_ERROR:
|
|
go = FALSE;
|
|
GST_DEBUG ("codec error");
|
|
ret = GST_FLOW_ERROR;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
GstFlowReturn
|
|
gst_schro_dec_handle_frame (GstBaseVideoDecoder * base_video_decoder,
|
|
GstVideoFrame * frame)
|
|
{
|
|
GstSchroDec *schro_dec;
|
|
SchroBuffer *input_buffer;
|
|
|
|
schro_dec = GST_SCHRO_DEC (base_video_decoder);
|
|
|
|
GST_DEBUG ("handle frame");
|
|
|
|
input_buffer = gst_schro_wrap_gst_buffer (frame->sink_buffer);
|
|
frame->sink_buffer = NULL;
|
|
|
|
input_buffer->tag = schro_tag_new (frame, NULL);
|
|
|
|
schro_decoder_autoparse_push (schro_dec->decoder, input_buffer);
|
|
|
|
return gst_schro_dec_process (schro_dec, FALSE);
|
|
}
|
|
|
|
gboolean
|
|
gst_schro_dec_finish (GstBaseVideoDecoder * base_video_decoder)
|
|
{
|
|
GstSchroDec *schro_dec;
|
|
|
|
schro_dec = GST_SCHRO_DEC (base_video_decoder);
|
|
|
|
GST_DEBUG ("finish");
|
|
|
|
schro_decoder_autoparse_push_end_of_sequence (schro_dec->decoder);
|
|
|
|
return gst_schro_dec_process (schro_dec, TRUE);
|
|
}
|