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Diffstat (limited to 'ext/mplex/stillsstream.cc')
| -rw-r--r-- | ext/mplex/stillsstream.cc | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/ext/mplex/stillsstream.cc b/ext/mplex/stillsstream.cc deleted file mode 100644 index 1b6d10b3..00000000 --- a/ext/mplex/stillsstream.cc +++ /dev/null @@ -1,194 +0,0 @@ - -/* - * stillsstreams.c: Class for elemenary still video streams - * Most functionality is inherited from VideoStream - * - * 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 <format_codes.h> - -#include "stillsstream.hh" -#include "outputstream.hh" -#include <cassert> - -void -StillsStream::Init () -{ - int stream_id = 0; - int buffer_size = 0; - - SetBufSize (4 * 1024 * 1024); - InitAUbuffer (); - ScanFirstSeqHeader (); - - mjpeg_debug ("SETTING video buffer to %d", muxinto.video_buffer_size); - switch (opt_mux_format) { - case MPEG_FORMAT_VCD_STILL: - if (horizontal_size > 352) { - stream_id = VIDEO_STR_0 + 2; - buffer_size = vbv_buffer_size * 2048; - mjpeg_info ("Stills Stream %02x: high-resolution VCD stills %d KB each", - stream_id, buffer_size); - if (buffer_size < 46 * 1024) - mjpeg_error_exit1 - ("I Can't multiplex high-res stills smaller than normal res stills - sorry!"); - - } else { - stream_id = VIDEO_STR_0 + 1; - buffer_size = 46 * 1024; - mjpeg_info ("Stills Stream %02x: normal VCD stills", stream_id); - } - break; - case MPEG_FORMAT_SVCD_STILL: - if (horizontal_size > 480) { - stream_id = VIDEO_STR_0 + 1; - buffer_size = 230 * 1024; - mjpeg_info ("Stills Stream %02x: high-resolution SVCD stills.", stream_id); - } else { - stream_id = VIDEO_STR_0 + 1; - buffer_size = 230 * 1024; - mjpeg_info ("Stills Stream %02x: normal-resolution SVCD stills.", stream_id); - } - break; - } - - - MuxStream::Init (stream_id, 1, // Buffer scale - buffer_size, 0, // Zero stuffing - muxinto.buffers_in_video, muxinto.always_buffers_in_video); - - /* Skip to the end of the 1st AU (*2nd* Picture start!) - */ - AU_hdr = SEQUENCE_HEADER; - AU_pict_data = 0; - AU_start = 0LL; - - OutputSeqhdrInfo (); - -} - - - - -/* - * Compute DTS / PTS for a VCD/SVCD Stills sequence - * TODO: Very crude. Simply assumes each still stays for the specified - * frame interval and that enough run-in delay is present for the first - * frame to be loaded. - * - */ - -void -StillsStream::NextDTSPTS (clockticks & DTS, clockticks & PTS) -{ - clockticks interval = static_cast < clockticks > - (intervals->NextFrameInterval () * CLOCKS / frame_rate); - clockticks time_for_xfer; - - muxinto.ByteposTimecode (BufferSize (), time_for_xfer); - - DTS = current_PTS + time_for_xfer; // This frame decoded just after - // Predecessor completed. - PTS = current_PTS + time_for_xfer + interval; - current_PTS = PTS; - current_DTS = DTS; -} - -/* - * VCD mixed stills segment items have the constraint that both stills - * streams must end together. To do this each stream has to know - * about its "sibling". - * - */ - -void -VCDStillsStream::SetSibling (VCDStillsStream * _sibling) -{ - assert (_sibling != 0); - sibling = _sibling; - if (sibling->stream_id == stream_id) { - mjpeg_error_exit1 ("VCD mixed stills stream cannot contain two streams of the same type!"); - } - -} - -/* - * Check if we've reached the last sector of the last AU. Note: that - * we know no PTS/DTS time-stamps will be needed because no new AU - * will appear in the last sector. WARNING: We assume a still won't - * fit into a single secotr. - * - */ - -bool -VCDStillsStream::LastSectorLastAU () -{ - return (Lookahead () == 0 && - au_unsent <= muxinto.PacketPayload (*this, buffers_in_header, false, false) - ); -} - - -/* - * The requirement that VCD mixed stills segment items constituent streams - * end together means we can't mux the last sector of the last AU of - * such streams until its sibling has already completed muxing or is - * also ready to mux the last sector of its last AU. - * - * NOTE: Will not work right if sector_align_iframe_AUs not set as this - * will allow multiple AU's in a sector. - * - */ - - -bool -VCDStillsStream::MuxPossible () -{ - if (bufmodel.Size () < au_unsent) { - mjpeg_error_exit1 - ("Illegal VCD still: larger than maximum permitted by its buffering parameters!"); - } - if (RunOutComplete () || bufmodel.Space () < au_unsent) { - return false; - } - - if (LastSectorLastAU ()) { - if (sibling != 0) { - if (!stream_mismatch_warned && sibling->NextAUType () != NOFRAME) { - mjpeg_warn ("One VCD stills stream runs significantly longer than the other!"); - mjpeg_warn ("Simultaneous stream ending recommended by standard not possible"); - return true; - } - return sibling->MuxCompleted () || sibling->LastSectorLastAU (); - } else - return true; - } else - return true; -} - - - - -/* - * Local variables: - * c-file-style: "stroustrup" - * tab-width: 4 - * indent-tabs-mode: nil - * End: - */ |