mirror of
https://gitlab.com/mbunkus/mkvtoolnix.git
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99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
/*
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mkvmerge -- utility for splicing together matroska files
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from component media subtypes
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p_video.h
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Written by Moritz Bunkus <moritz@bunkus.org>
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Distributed under the GPL
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see the file COPYING for details
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or visit http://www.gnu.org/copyleft/gpl.html
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*/
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/*!
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\file
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\version \$Id: p_video.cpp,v 1.36 2003/05/22 11:10:40 mosu Exp $
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\brief video output module
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\author Moritz Bunkus <moritz@bunkus.org>
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*/
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#include <ctype.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include "common.h"
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#include "mkvmerge.h"
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#include "pr_generic.h"
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#include "p_video.h"
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#include "matroska.h"
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using namespace LIBMATROSKA_NAMESPACE;
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video_packetizer_c::video_packetizer_c(generic_reader_c *nreader,
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double nfps, int nwidth,
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int nheight, int nbpp,
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int navi_compat_mode, track_info_t *nti)
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throw (error_c) : generic_packetizer_c(nreader, nti) {
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fps = nfps;
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width = nwidth;
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height = nheight;
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bpp = nbpp;
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avi_compat_mode = navi_compat_mode;
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frames_output = 0;
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avi_compat_mode = 1;
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ref_timecode = -1;
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if (get_cue_creation() == CUES_UNSPECIFIED)
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set_cue_creation(CUES_IFRAMES);
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video_track_present = true;
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set_track_type(track_video);
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}
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void video_packetizer_c::set_headers() {
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set_codec_id(MKV_V_MSCOMP);
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set_codec_private(ti->private_data, ti->private_size);
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// Set MinCache and MaxCache to 1 for I- and P-frames. If you only
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// have I-frames then both can be set to 0 (e.g. MJPEG). 2 is needed
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// if there are B-frames as well.
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set_track_min_cache(1);
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set_track_max_cache(1);
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set_video_pixel_width(width);
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set_video_pixel_height(height);
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set_video_frame_rate(fps);
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generic_packetizer_c::set_headers();
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}
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int video_packetizer_c::process(unsigned char *buf, int size,
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int64_t old_timecode, int64_t, int64_t bref,
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int64_t) {
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int64_t timecode;
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if (old_timecode == -1)
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timecode = (int64_t)(1000.0 * frames_output / fps);
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else
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timecode = old_timecode;
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if (bref == -1) {
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// Add a key frame and save its timecode so that we can reference it later.
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add_packet(buf, size, timecode, (int64_t)(1000.0 / fps));
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ref_timecode = timecode;
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} else {
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// This is a P frame - let's reference the last frame.
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add_packet(buf, size, timecode, (int64_t)(1000.0 / fps), 0, ref_timecode);
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ref_timecode = timecode;
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}
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frames_output++;
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return EMOREDATA;
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}
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video_packetizer_c::~video_packetizer_c() {
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}
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