blob: 4b72623a19419874486e1a71ee5ffaafc7484642 [file] [log] [blame]
* Copyright (c) 2020 The WebRTC 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 "api/video_codecs/video_encoder.h"
#include "api/video_codecs/video_encoder_config.h"
namespace webrtc {
class AlignmentAdjuster {
// Returns the resolution alignment requested by the encoder (i.e
// |EncoderInfo::requested_resolution_alignment| which ensures that delivered
// frames to the encoder are divisible by this alignment).
// If |EncoderInfo::apply_alignment_to_all_simulcast_layers| is enabled, the
// alignment will be adjusted to ensure that each simulcast layer also is
// divisible by |requested_resolution_alignment|. The configured scale factors
// |scale_resolution_down_by| may be adjusted to a common multiple to limit
// the alignment value to avoid largely cropped frames and possibly with an
// aspect ratio far from the original.
// Note: |max_layers| currently only taken into account when using default
// scale factors.
static int GetAlignmentAndMaybeAdjustScaleFactors(
const VideoEncoder::EncoderInfo& info,
VideoEncoderConfig* config,
absl::optional<size_t> max_layers);
} // namespace webrtc