09acd267bc
WebM files will adjust the display width and height according to the input pixel aspect ratio. The default pixel aspect ratio is 1:1. BUG=https://code.google.com/p/webm/issues/detail?id=1005 Change-Id: I23e0a601b7259fa9513cb86110c41b8437769808
98 lines
3.6 KiB
C++
98 lines
3.6 KiB
C++
/*
|
|
* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
#include "./webmenc.h"
|
|
|
|
#include <string>
|
|
|
|
#include "third_party/libwebm/mkvmuxer.hpp"
|
|
#include "third_party/libwebm/mkvmuxerutil.hpp"
|
|
#include "third_party/libwebm/mkvwriter.hpp"
|
|
|
|
namespace {
|
|
const uint64_t kDebugTrackUid = 0xDEADBEEF;
|
|
const int kVideoTrackNumber = 1;
|
|
} // namespace
|
|
|
|
void write_webm_file_header(struct EbmlGlobal *glob,
|
|
const vpx_codec_enc_cfg_t *cfg,
|
|
const struct vpx_rational *fps,
|
|
stereo_format_t stereo_fmt,
|
|
unsigned int fourcc,
|
|
const struct VpxRational *par) {
|
|
mkvmuxer::MkvWriter *const writer = new mkvmuxer::MkvWriter(glob->stream);
|
|
mkvmuxer::Segment *const segment = new mkvmuxer::Segment();
|
|
segment->Init(writer);
|
|
segment->set_mode(mkvmuxer::Segment::kFile);
|
|
segment->OutputCues(true);
|
|
|
|
mkvmuxer::SegmentInfo *const info = segment->GetSegmentInfo();
|
|
const uint64_t kTimecodeScale = 1000000;
|
|
info->set_timecode_scale(kTimecodeScale);
|
|
std::string version = "vpxenc";
|
|
if (!glob->debug) {
|
|
version.append(std::string(" ") + vpx_codec_version_str());
|
|
}
|
|
info->set_writing_app(version.c_str());
|
|
|
|
const uint64_t video_track_id =
|
|
segment->AddVideoTrack(static_cast<int>(cfg->g_w),
|
|
static_cast<int>(cfg->g_h),
|
|
kVideoTrackNumber);
|
|
mkvmuxer::VideoTrack* const video_track =
|
|
static_cast<mkvmuxer::VideoTrack*>(
|
|
segment->GetTrackByNumber(video_track_id));
|
|
video_track->SetStereoMode(stereo_fmt);
|
|
video_track->set_codec_id(fourcc == VP8_FOURCC ? "V_VP8" : "V_VP9");
|
|
if (par->numerator > 1 || par->denominator > 1) {
|
|
// TODO(fgalligan): Add support of DisplayUnit, Display Aspect Ratio type
|
|
// to WebM format.
|
|
const uint64_t display_width =
|
|
static_cast<uint64_t>(((cfg->g_w * par->numerator * 1.0) /
|
|
par->denominator) + .5);
|
|
video_track->set_display_width(display_width);
|
|
video_track->set_display_height(cfg->g_h);
|
|
}
|
|
if (glob->debug) {
|
|
video_track->set_uid(kDebugTrackUid);
|
|
}
|
|
glob->writer = writer;
|
|
glob->segment = segment;
|
|
}
|
|
|
|
void write_webm_block(struct EbmlGlobal *glob,
|
|
const vpx_codec_enc_cfg_t *cfg,
|
|
const vpx_codec_cx_pkt_t *pkt) {
|
|
mkvmuxer::Segment *const segment =
|
|
reinterpret_cast<mkvmuxer::Segment*>(glob->segment);
|
|
int64_t pts_ns = pkt->data.frame.pts * 1000000000ll *
|
|
cfg->g_timebase.num / cfg->g_timebase.den;
|
|
if (pts_ns <= glob->last_pts_ns)
|
|
pts_ns = glob->last_pts_ns + 1000000;
|
|
glob->last_pts_ns = pts_ns;
|
|
|
|
segment->AddFrame(static_cast<uint8_t*>(pkt->data.frame.buf),
|
|
pkt->data.frame.sz,
|
|
kVideoTrackNumber,
|
|
pts_ns,
|
|
pkt->data.frame.flags & VPX_FRAME_IS_KEY);
|
|
}
|
|
|
|
void write_webm_file_footer(struct EbmlGlobal *glob) {
|
|
mkvmuxer::MkvWriter *const writer =
|
|
reinterpret_cast<mkvmuxer::MkvWriter*>(glob->writer);
|
|
mkvmuxer::Segment *const segment =
|
|
reinterpret_cast<mkvmuxer::Segment*>(glob->segment);
|
|
segment->Finalize();
|
|
delete segment;
|
|
delete writer;
|
|
glob->writer = NULL;
|
|
glob->segment = NULL;
|
|
}
|