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-rw-r--r--ext/mplex/videostrm_out.cc276
1 files changed, 0 insertions, 276 deletions
diff --git a/ext/mplex/videostrm_out.cc b/ext/mplex/videostrm_out.cc
deleted file mode 100644
index a70bd078..00000000
--- a/ext/mplex/videostrm_out.cc
+++ /dev/null
@@ -1,276 +0,0 @@
-
-/*
- * inptstrm.c: Members of input stream classes related to muxing out into
- * the output stream.
- *
- * Copyright (C) 2001 Andrew Stevens <andrew.stevens@philips.com>
- *
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public License
- * as published by the Free Software Foundation.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-
-#include <config.h>
-#include <assert.h>
-#include "fastintfns.h"
-#include "videostrm.hh"
-#include "outputstream.hh"
-
-
-VideoStream::VideoStream (IBitStream & ibs, OutputStream & into):
-ElementaryStream (ibs, into, ElementaryStream::video),
-num_sequence (0),
-num_seq_end (0),
-num_pictures (0),
-num_groups (0), dtspts_for_all_au (into.dtspts_for_all_vau), gop_control_packet (false)
-{
- prev_offset = 0;
- decoding_order = 0;
- fields_presented = 0;
- group_order = 0;
- group_start_pic = 0;
- group_start_field = 0;
- temporal_reference = 0;
- pulldown_32 = 0;
- temporal_reference = -1; // Needed to recognise 2nd field of 1st
- // frame in a field pic sequence
- last_buffered_AU = 0;
- max_bits_persec = 0;
- AU_hdr = SEQUENCE_HEADER; /* GOP or SEQ Header starting AU? */
- for (int i = 0; i < 4; ++i)
- num_frames[i] = avg_frames[i] = 0;
- FRAME_CHUNK = 6;
-
- this->opt_mpeg = into.opt_mpeg;
- this->opt_multifile_segment = into.opt_multifile_segment;
-}
-
-bool
-VideoStream::Probe (IBitStream & bs)
-{
- return bs.getbits (32) == 0x1b3;
-}
-
-void
-VideoStream::InitAUbuffer ()
-{
- unsigned int i;
-
- for (i = 0; i < aunits.BUF_SIZE; ++i)
- aunits.init (new VAunit);
-}
-
-
-/*********************************
- * Signals when video stream has completed mux run-out specified
- * in associated mux stream. Run-out is always to complete GOP's.
- *********************************/
-
-bool
-VideoStream::RunOutComplete ()
-{
-
- return (au_unsent == 0 ||
- (muxinto.running_out && au->type == IFRAME && RequiredPTS () >= muxinto.runout_PTS));
-}
-
-/*********************************
- * Signals if it is permissible/possible to Mux out a sector from the Stream.
- * The universal constraints that muxing should not be complete and that
- * that the reciever buffer should have sufficient it also insists that
- * the muxed data won't hang around in the receiver buffer for more than
- * one second. This is mainly for the benefit of (S)VCD and DVD applications
- * where long delays mess up random access.
- *******************************/
-
-
-bool
-VideoStream::MuxPossible (clockticks currentSCR)
-{
-
- return (ElementaryStream::MuxPossible (currentSCR) &&
- RequiredDTS () < currentSCR + max_STD_buffer_delay);
-}
-
-/*********************************
- * Work out the timestamps to be set in the header of sectors starting
- * new AU's.
- *********************************/
-
-uint8_t
-VideoStream::NewAUTimestamps (int AUtype)
-{
- uint8_t timestamps;
-
- if (AUtype == BFRAME)
- timestamps = TIMESTAMPBITS_PTS;
- else
- timestamps = TIMESTAMPBITS_PTS_DTS;
-
- if (muxinto.timestamp_iframe_only && AUtype != IFRAME)
- timestamps = TIMESTAMPBITS_NO;
- return timestamps;
-}
-
-/*********************************
- * Work out the buffer records to be set in the header of sectors
- * starting new AU's.
- *********************************/
-
-bool
-VideoStream::NewAUBuffers (int AUtype)
-{
- return buffers_in_header & !(muxinto.video_buffers_iframe_only && AUtype != IFRAME);
-}
-
-/******************************************************************
- Output_Video
- generiert Pack/Sys_Header/Packet Informationen aus dem
- Video Stream und speichert den so erhaltenen Sektor ab.
-
- generates Pack/Sys_Header/Packet information from the
- video stream and writes out the new sector
-******************************************************************/
-
-void
-VideoStream::OutputSector ()
-{
-
- unsigned int max_packet_payload;
- unsigned int actual_payload;
- unsigned int old_au_then_new_payload;
- clockticks DTS, PTS;
- int autype;
-
- max_packet_payload = 0; /* 0 = Fill sector */
- /*
- We're now in the last AU of a segment.
- So we don't want to go beyond it's end when filling
- sectors. Hence we limit packet payload size to (remaining) AU length.
- The same applies when we wish to ensure sequence headers starting
- ACCESS-POINT AU's in (S)VCD's etc are sector-aligned.
- */
- int nextAU = NextAUType ();
-
- if ((muxinto.running_out && nextAU == IFRAME &&
- NextRequiredPTS () > muxinto.runout_PTS) ||
- (muxinto.sector_align_iframeAUs && nextAU == IFRAME)
- ) {
- max_packet_payload = au_unsent;
- }
-
- /* Figure out the threshold payload size below which we can fit more
- than one AU into a packet N.b. because fitting more than one in
- imposses an overhead of additional header fields so there is a
- dead spot where we *have* to stuff the packet rather than start
- fitting in an extra AU. Slightly over-conservative in the case
- of the last packet... */
-
- old_au_then_new_payload = muxinto.PacketPayload (*this, buffers_in_header, true, true);
-
- /* CASE: Packet starts with new access unit */
- if (new_au_next_sec) {
- autype = AUType ();
- //
- // Some types of output format (e.g. DVD) require special
- // control sectors before the sector starting a new GOP
- // N.b. this implies muxinto.sector_align_iframeAUs
- //
- if (gop_control_packet && autype == IFRAME) {
- OutputGOPControlSector ();
- }
-
- if (dtspts_for_all_au && max_packet_payload == 0)
- max_packet_payload = au_unsent;
-
- PTS = RequiredPTS ();
- DTS = RequiredDTS ();
- actual_payload =
- muxinto.WritePacket (max_packet_payload,
- *this, NewAUBuffers (autype), PTS, DTS, NewAUTimestamps (autype));
-
- }
-
- /* CASE: Packet begins with old access unit, no new one */
- /* can begin in the very same packet */
-
- else if (au_unsent >= old_au_then_new_payload ||
- (max_packet_payload != 0 && au_unsent >= max_packet_payload)) {
- actual_payload = muxinto.WritePacket (au_unsent, *this, false, 0, 0, TIMESTAMPBITS_NO);
- }
-
- /* CASE: Packet begins with old access unit, a new one */
- /* could begin in the very same packet */
- else { /* if ( !new_au_next_sec &&
- (au_unsent < old_au_then_new_payload)) */
- /* Is there a new access unit ? */
- if (Lookahead () != 0) {
- autype = NextAUType ();
- if (dtspts_for_all_au && max_packet_payload == 0)
- max_packet_payload = au_unsent + Lookahead ()->length;
-
- PTS = NextRequiredPTS ();
- DTS = NextRequiredDTS ();
-
- actual_payload =
- muxinto.WritePacket (max_packet_payload,
- *this, NewAUBuffers (autype), PTS, DTS, NewAUTimestamps (autype));
- } else {
- actual_payload = muxinto.WritePacket (0, *this, false, 0, 0, TIMESTAMPBITS_NO);
- }
-
- }
- ++nsec;
- buffers_in_header = always_buffers_in_header;
-}
-
-
-/***********************************************
- OutputControlSector - Write control sectors prefixing a GOP
- For "normal" video streams this doesn't happen and so represents
- a bug and triggers an abort.
-
- In DVD's these sectors carry a system header and what is
- presumably indexing and/or sub-title information in
- private_stream_2 packets. I have no idea what to put in here so we
- simply pad the sector out.
-***********************************************/
-
-void
-VideoStream::OutputGOPControlSector ()
-{
- abort ();
-}
-
- /******************************************************************
- * OutputGOPControlSector
- * DVD System headers are carried in peculiar sectors carrying 2
- * PrivateStream2 packets. We're sticking 0's in the packets
- * as we have no idea what's supposed to be in there.
- ******************************************************************/
-
-void
-DVDVideoStream::OutputGOPControlSector ()
-{
- muxinto.OutputDVDPriv2 ();
-}
-
-
-/*
- * Local variables:
- * c-file-style: "stroustrup"
- * tab-width: 4
- * indent-tabs-mode: nil
- * End:
- */
generated by cgit v1.2.1 (git 2.18.0) at 2024-06-30 03:13:20 +0000