98 строки
3.8 KiB
C++
98 строки
3.8 KiB
C++
/*
|
|
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
|
|
*
|
|
* This source code is subject to the terms of the BSD 2 Clause License and
|
|
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
|
|
* was not distributed with this source code in the LICENSE file, you can
|
|
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
|
|
* Media Patent License 1.0 was not distributed with this source code in the
|
|
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
|
|
*/
|
|
|
|
#include "./webmenc.h"
|
|
|
|
#include <string>
|
|
|
|
#include "third_party/libwebm/mkvmuxer/mkvmuxer.h"
|
|
#include "third_party/libwebm/mkvmuxer/mkvmuxerutil.h"
|
|
#include "third_party/libwebm/mkvmuxer/mkvwriter.h"
|
|
|
|
namespace {
|
|
const uint64_t kDebugTrackUid = 0xDEADBEEF;
|
|
const int kVideoTrackNumber = 1;
|
|
} // namespace
|
|
|
|
void write_webm_file_header(struct WebmOutputContext *webm_ctx,
|
|
const aom_codec_enc_cfg_t *cfg,
|
|
const struct aom_rational *fps,
|
|
stereo_format_t stereo_fmt, unsigned int fourcc,
|
|
const struct AvxRational *par) {
|
|
mkvmuxer::MkvWriter *const writer = new mkvmuxer::MkvWriter(webm_ctx->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 = "aomenc";
|
|
if (!webm_ctx->debug) {
|
|
version.append(std::string(" ") + aom_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);
|
|
const char *codec_id;
|
|
switch (fourcc) {
|
|
case AV1_FOURCC: codec_id = "V_AV1"; break;
|
|
default: codec_id = "V_AV1"; break;
|
|
}
|
|
video_track->set_codec_id(codec_id);
|
|
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 (webm_ctx->debug) {
|
|
video_track->set_uid(kDebugTrackUid);
|
|
}
|
|
webm_ctx->writer = writer;
|
|
webm_ctx->segment = segment;
|
|
}
|
|
|
|
void write_webm_block(struct WebmOutputContext *webm_ctx,
|
|
const aom_codec_enc_cfg_t *cfg,
|
|
const aom_codec_cx_pkt_t *pkt) {
|
|
mkvmuxer::Segment *const segment =
|
|
reinterpret_cast<mkvmuxer::Segment *>(webm_ctx->segment);
|
|
int64_t pts_ns = pkt->data.frame.pts * 1000000000ll * cfg->g_timebase.num /
|
|
cfg->g_timebase.den;
|
|
if (pts_ns <= webm_ctx->last_pts_ns) pts_ns = webm_ctx->last_pts_ns + 1000000;
|
|
webm_ctx->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 & AOM_FRAME_IS_KEY);
|
|
}
|
|
|
|
void write_webm_file_footer(struct WebmOutputContext *webm_ctx) {
|
|
mkvmuxer::MkvWriter *const writer =
|
|
reinterpret_cast<mkvmuxer::MkvWriter *>(webm_ctx->writer);
|
|
mkvmuxer::Segment *const segment =
|
|
reinterpret_cast<mkvmuxer::Segment *>(webm_ctx->segment);
|
|
segment->Finalize();
|
|
delete segment;
|
|
delete writer;
|
|
webm_ctx->writer = NULL;
|
|
webm_ctx->segment = NULL;
|
|
}
|