Replace switches in scalability mode utility functions
Instead, use an array indexed on the scalability mode. This is a follow-up on https://webrtc-review.googlesource.com/c/src/+/344760. Bug: webrtc:15892 Change-Id: I8e820d758e1838d65ae771b502c7c27a89790026 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/345922 Commit-Queue: Evan Shrubsole <eshr@google.com> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/main@{#42013}
This commit is contained in:
Evan Shrubsole
WebRTC LUCI CQ
parent
c793e46856
commit
de5a74a35b
@ -19,6 +19,7 @@ rtc_source_set("scalability_mode_util") {
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"../../../rtc_base:checks",
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]
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absl_deps = [
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"//third_party/abseil-cpp/absl/algorithm:container",
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"//third_party/abseil-cpp/absl/strings",
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"//third_party/abseil-cpp/absl/types:optional",
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]
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@ -11,8 +11,10 @@
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#include "modules/video_coding/svc/scalability_mode_util.h"
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#include <array>
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#include <utility>
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#include <cstddef>
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#include <type_traits>
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#include "absl/algorithm/container.h"
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#include "absl/strings/string_view.h"
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#include "absl/types/optional.h"
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#include "api/video_codecs/scalability_mode.h"
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@ -22,46 +24,292 @@
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namespace webrtc {
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namespace {
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struct ScalabilityModeParameters {
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int num_spatial_layers;
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int num_temporal_layers;
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InterLayerPredMode inter_layer_pred;
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absl::optional<ScalabilityModeResolutionRatio> ratio;
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bool shift;
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constexpr bool operator==(const ScalabilityModeParameters& other) const {
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// For all L1Tx modes, ignore inter_layer_pred, ratio and shift.
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if (this->num_spatial_layers == 1) {
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return this->num_spatial_layers == other.num_spatial_layers &&
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this->num_temporal_layers == other.num_temporal_layers;
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}
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return this->num_spatial_layers == other.num_spatial_layers &&
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this->num_temporal_layers == other.num_temporal_layers &&
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this->inter_layer_pred == other.inter_layer_pred &&
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this->ratio == other.ratio && this->shift == other.shift;
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}
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};
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struct ScalabilityModeConfiguration {
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explicit ScalabilityModeConfiguration(ScalabilityMode scalability_mode)
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: scalability_mode(scalability_mode),
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params{
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.num_spatial_layers =
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(ScalabilityModeToNumSpatialLayers(scalability_mode)),
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.num_temporal_layers =
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(ScalabilityModeToNumTemporalLayers(scalability_mode)),
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.inter_layer_pred =
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(ScalabilityModeToInterLayerPredMode(scalability_mode)),
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.ratio = (ScalabilityModeToResolutionRatio(scalability_mode)),
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.shift = (ScalabilityModeIsShiftMode(scalability_mode)),
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} {}
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const ScalabilityMode scalability_mode;
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const ScalabilityModeParameters params;
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const absl::string_view name;
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const int num_spatial_layers;
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const int num_temporal_layers;
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const InterLayerPredMode inter_layer_pred;
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const absl::optional<ScalabilityModeResolutionRatio> ratio =
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ScalabilityModeResolutionRatio::kTwoToOne;
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const bool shift = false;
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};
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constexpr size_t kNumScalabilityModes =
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static_cast<size_t>(ScalabilityMode::kS3T3h) + 1;
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constexpr ScalabilityModeParameters kScalabilityModeParams[] = {
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ScalabilityModeParameters{.scalability_mode = ScalabilityMode::kL1T1,
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.name = "L1T1",
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.num_spatial_layers = 1,
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.num_temporal_layers = 1,
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.inter_layer_pred = InterLayerPredMode::kOff,
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.ratio = absl::nullopt},
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ScalabilityModeParameters{.scalability_mode = ScalabilityMode::kL1T2,
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.name = "L1T2",
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.num_spatial_layers = 1,
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.num_temporal_layers = 2,
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.inter_layer_pred = InterLayerPredMode::kOff,
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.ratio = absl::nullopt},
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ScalabilityModeParameters{.scalability_mode = ScalabilityMode::kL1T3,
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.name = "L1T3",
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.num_spatial_layers = 1,
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.num_temporal_layers = 3,
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.inter_layer_pred = InterLayerPredMode::kOff,
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.ratio = absl::nullopt},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL2T1,
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.name = "L2T1",
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.num_spatial_layers = 2,
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.num_temporal_layers = 1,
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.inter_layer_pred = InterLayerPredMode::kOn,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL2T1h,
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.name = "L2T1h",
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.num_spatial_layers = 2,
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.num_temporal_layers = 1,
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.inter_layer_pred = InterLayerPredMode::kOn,
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.ratio = ScalabilityModeResolutionRatio::kThreeToTwo,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL2T1_KEY,
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.name = "L2T1_KEY",
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.num_spatial_layers = 2,
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.num_temporal_layers = 1,
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.inter_layer_pred = InterLayerPredMode::kOnKeyPic,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL2T2,
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.name = "L2T2",
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.num_spatial_layers = 2,
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.num_temporal_layers = 2,
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.inter_layer_pred = InterLayerPredMode::kOn,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL2T2h,
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.name = "L2T2h",
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.num_spatial_layers = 2,
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.num_temporal_layers = 2,
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.inter_layer_pred = InterLayerPredMode::kOn,
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.ratio = ScalabilityModeResolutionRatio::kThreeToTwo,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL2T2_KEY,
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.name = "L2T2_KEY",
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.num_spatial_layers = 2,
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.num_temporal_layers = 2,
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.inter_layer_pred = InterLayerPredMode::kOnKeyPic,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL2T2_KEY_SHIFT,
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.name = "L2T2_KEY_SHIFT",
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.num_spatial_layers = 2,
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.num_temporal_layers = 2,
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.inter_layer_pred = InterLayerPredMode::kOnKeyPic,
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.shift = true},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL2T3,
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.name = "L2T3",
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.num_spatial_layers = 2,
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.num_temporal_layers = 3,
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.inter_layer_pred = InterLayerPredMode::kOn,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL2T3h,
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.name = "L2T3h",
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.num_spatial_layers = 2,
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.num_temporal_layers = 3,
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.inter_layer_pred = InterLayerPredMode::kOn,
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.ratio = ScalabilityModeResolutionRatio::kThreeToTwo,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL2T3_KEY,
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.name = "L2T3_KEY",
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.num_spatial_layers = 2,
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.num_temporal_layers = 3,
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.inter_layer_pred = InterLayerPredMode::kOnKeyPic,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL3T1,
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.name = "L3T1",
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.num_spatial_layers = 3,
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.num_temporal_layers = 1,
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.inter_layer_pred = InterLayerPredMode::kOn,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL3T1h,
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.name = "L3T1h",
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.num_spatial_layers = 3,
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.num_temporal_layers = 1,
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.inter_layer_pred = InterLayerPredMode::kOn,
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.ratio = ScalabilityModeResolutionRatio::kThreeToTwo,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL3T1_KEY,
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.name = "L3T1_KEY",
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.num_spatial_layers = 3,
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.num_temporal_layers = 1,
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.inter_layer_pred = InterLayerPredMode::kOnKeyPic,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL3T2,
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.name = "L3T2",
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.num_spatial_layers = 3,
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.num_temporal_layers = 2,
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.inter_layer_pred = InterLayerPredMode::kOn,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL3T2h,
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.name = "L3T2h",
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.num_spatial_layers = 3,
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.num_temporal_layers = 2,
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.inter_layer_pred = InterLayerPredMode::kOn,
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.ratio = ScalabilityModeResolutionRatio::kThreeToTwo,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL3T2_KEY,
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.name = "L3T2_KEY",
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.num_spatial_layers = 3,
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.num_temporal_layers = 2,
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.inter_layer_pred = InterLayerPredMode::kOnKeyPic,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL3T3,
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.name = "L3T3",
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.num_spatial_layers = 3,
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.num_temporal_layers = 3,
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.inter_layer_pred = InterLayerPredMode::kOn,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL3T3h,
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.name = "L3T3h",
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.num_spatial_layers = 3,
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.num_temporal_layers = 3,
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.inter_layer_pred = InterLayerPredMode::kOn,
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.ratio = ScalabilityModeResolutionRatio::kThreeToTwo,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kL3T3_KEY,
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.name = "L3T3_KEY",
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.num_spatial_layers = 3,
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.num_temporal_layers = 3,
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.inter_layer_pred = InterLayerPredMode::kOnKeyPic,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kS2T1,
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.name = "S2T1",
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.num_spatial_layers = 2,
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.num_temporal_layers = 1,
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.inter_layer_pred = InterLayerPredMode::kOff,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kS2T1h,
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.name = "S2T1h",
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.num_spatial_layers = 2,
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.num_temporal_layers = 1,
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.inter_layer_pred = InterLayerPredMode::kOff,
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.ratio = ScalabilityModeResolutionRatio::kThreeToTwo,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kS2T2,
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.name = "S2T2",
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.num_spatial_layers = 2,
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.num_temporal_layers = 2,
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.inter_layer_pred = InterLayerPredMode::kOff,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kS2T2h,
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.name = "S2T2h",
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.num_spatial_layers = 2,
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.num_temporal_layers = 2,
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.inter_layer_pred = InterLayerPredMode::kOff,
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.ratio = ScalabilityModeResolutionRatio::kThreeToTwo,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kS2T3,
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.name = "S2T3",
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.num_spatial_layers = 2,
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.num_temporal_layers = 3,
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.inter_layer_pred = InterLayerPredMode::kOff,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kS2T3h,
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.name = "S2T3h",
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.num_spatial_layers = 2,
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.num_temporal_layers = 3,
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.inter_layer_pred = InterLayerPredMode::kOff,
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.ratio = ScalabilityModeResolutionRatio::kThreeToTwo,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kS3T1,
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.name = "S3T1",
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.num_spatial_layers = 3,
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.num_temporal_layers = 1,
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.inter_layer_pred = InterLayerPredMode::kOff,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kS3T1h,
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.name = "S3T1h",
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.num_spatial_layers = 3,
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.num_temporal_layers = 1,
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.inter_layer_pred = InterLayerPredMode::kOff,
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.ratio = ScalabilityModeResolutionRatio::kThreeToTwo,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kS3T2,
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.name = "S3T2",
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.num_spatial_layers = 3,
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.num_temporal_layers = 2,
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.inter_layer_pred = InterLayerPredMode::kOff,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kS3T2h,
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.name = "S3T2h",
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.num_spatial_layers = 3,
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.num_temporal_layers = 2,
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.inter_layer_pred = InterLayerPredMode::kOff,
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.ratio = ScalabilityModeResolutionRatio::kThreeToTwo,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kS3T3,
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.name = "S3T3",
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.num_spatial_layers = 3,
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.num_temporal_layers = 3,
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.inter_layer_pred = InterLayerPredMode::kOff,
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},
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ScalabilityModeParameters{
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.scalability_mode = ScalabilityMode::kS3T3h,
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.name = "S3T3h",
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.num_spatial_layers = 3,
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.num_temporal_layers = 3,
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.inter_layer_pred = InterLayerPredMode::kOff,
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.ratio = ScalabilityModeResolutionRatio::kThreeToTwo,
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},
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};
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// This could be replaced with std::all_of in c++20.
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constexpr bool CheckScalabilityModeParams() {
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static_assert(std::size(kScalabilityModeParams) == kNumScalabilityModes);
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for (size_t s = 0; s < kNumScalabilityModes; ++s) {
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if (kScalabilityModeParams[s].scalability_mode !=
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static_cast<ScalabilityMode>(s)) {
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return false;
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}
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}
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return true;
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}
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static_assert(CheckScalabilityModeParams(),
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"There is a scalability mode mismatch in the array!");
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constexpr auto Idx(ScalabilityMode s) {
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const auto index = static_cast<std::underlying_type_t<ScalabilityMode>>(s);
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RTC_CHECK_LT(index, kNumScalabilityModes);
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return index;
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}
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} // namespace
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absl::optional<ScalabilityMode> MakeScalabilityMode(
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@ -70,50 +318,14 @@ absl::optional<ScalabilityMode> MakeScalabilityMode(
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InterLayerPredMode inter_layer_pred,
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absl::optional<ScalabilityModeResolutionRatio> ratio,
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bool shift) {
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ScalabilityModeParameters params{num_spatial_layers, num_temporal_layers,
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inter_layer_pred, std::move(ratio), shift};
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static const ScalabilityModeConfiguration kScalabilityModeConfigs[] = {
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ScalabilityModeConfiguration{ScalabilityMode::kL1T1},
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ScalabilityModeConfiguration{ScalabilityMode::kL1T2},
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ScalabilityModeConfiguration{ScalabilityMode::kL1T3},
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ScalabilityModeConfiguration{ScalabilityMode::kL2T1},
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ScalabilityModeConfiguration{ScalabilityMode::kL2T1h},
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ScalabilityModeConfiguration{ScalabilityMode::kL2T1_KEY},
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ScalabilityModeConfiguration{ScalabilityMode::kL2T2},
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ScalabilityModeConfiguration{ScalabilityMode::kL2T2h},
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ScalabilityModeConfiguration{ScalabilityMode::kL2T2_KEY},
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ScalabilityModeConfiguration{ScalabilityMode::kL2T2_KEY_SHIFT},
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ScalabilityModeConfiguration{ScalabilityMode::kL2T3},
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ScalabilityModeConfiguration{ScalabilityMode::kL2T3h},
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ScalabilityModeConfiguration{ScalabilityMode::kL2T3_KEY},
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ScalabilityModeConfiguration{ScalabilityMode::kL3T1},
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ScalabilityModeConfiguration{ScalabilityMode::kL3T1h},
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ScalabilityModeConfiguration{ScalabilityMode::kL3T1_KEY},
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ScalabilityModeConfiguration{ScalabilityMode::kL3T2},
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ScalabilityModeConfiguration{ScalabilityMode::kL3T2h},
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ScalabilityModeConfiguration{ScalabilityMode::kL3T2_KEY},
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ScalabilityModeConfiguration{ScalabilityMode::kL3T3},
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ScalabilityModeConfiguration{ScalabilityMode::kL3T3h},
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ScalabilityModeConfiguration{ScalabilityMode::kL3T3_KEY},
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ScalabilityModeConfiguration{ScalabilityMode::kS2T1},
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ScalabilityModeConfiguration{ScalabilityMode::kS2T1h},
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ScalabilityModeConfiguration{ScalabilityMode::kS2T2},
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ScalabilityModeConfiguration{ScalabilityMode::kS2T2h},
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ScalabilityModeConfiguration{ScalabilityMode::kS2T3},
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ScalabilityModeConfiguration{ScalabilityMode::kS2T3h},
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ScalabilityModeConfiguration{ScalabilityMode::kS3T1},
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ScalabilityModeConfiguration{ScalabilityMode::kS3T1h},
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ScalabilityModeConfiguration{ScalabilityMode::kS3T2},
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ScalabilityModeConfiguration{ScalabilityMode::kS3T2h},
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ScalabilityModeConfiguration{ScalabilityMode::kS3T3},
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ScalabilityModeConfiguration{ScalabilityMode::kS3T3h},
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};
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static_assert(std::size(kScalabilityModeConfigs) == kNumScalabilityModes);
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for (const auto& candidate_mode : kScalabilityModeConfigs) {
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if (candidate_mode.params == params) {
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return candidate_mode.scalability_mode;
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for (const auto& candidate_mode : kScalabilityModeParams) {
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if (candidate_mode.num_spatial_layers == num_spatial_layers &&
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candidate_mode.num_temporal_layers == num_temporal_layers) {
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if (num_spatial_layers == 1 ||
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(candidate_mode.inter_layer_pred == inter_layer_pred &&
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candidate_mode.ratio == ratio && candidate_mode.shift == shift)) {
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return candidate_mode.scalability_mode;
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}
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}
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}
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return absl::nullopt;
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@ -121,277 +333,33 @@ absl::optional<ScalabilityMode> MakeScalabilityMode(
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absl::optional<ScalabilityMode> ScalabilityModeFromString(
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absl::string_view mode_string) {
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if (mode_string == "L1T1")
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return ScalabilityMode::kL1T1;
|
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if (mode_string == "L1T2")
|
||||
return ScalabilityMode::kL1T2;
|
||||
if (mode_string == "L1T3")
|
||||
return ScalabilityMode::kL1T3;
|
||||
|
||||
if (mode_string == "L2T1")
|
||||
return ScalabilityMode::kL2T1;
|
||||
if (mode_string == "L2T1h")
|
||||
return ScalabilityMode::kL2T1h;
|
||||
if (mode_string == "L2T1_KEY")
|
||||
return ScalabilityMode::kL2T1_KEY;
|
||||
|
||||
if (mode_string == "L2T2")
|
||||
return ScalabilityMode::kL2T2;
|
||||
if (mode_string == "L2T2h")
|
||||
return ScalabilityMode::kL2T2h;
|
||||
if (mode_string == "L2T2_KEY")
|
||||
return ScalabilityMode::kL2T2_KEY;
|
||||
if (mode_string == "L2T2_KEY_SHIFT")
|
||||
return ScalabilityMode::kL2T2_KEY_SHIFT;
|
||||
if (mode_string == "L2T3")
|
||||
return ScalabilityMode::kL2T3;
|
||||
if (mode_string == "L2T3h")
|
||||
return ScalabilityMode::kL2T3h;
|
||||
if (mode_string == "L2T3_KEY")
|
||||
return ScalabilityMode::kL2T3_KEY;
|
||||
|
||||
if (mode_string == "L3T1")
|
||||
return ScalabilityMode::kL3T1;
|
||||
if (mode_string == "L3T1h")
|
||||
return ScalabilityMode::kL3T1h;
|
||||
if (mode_string == "L3T1_KEY")
|
||||
return ScalabilityMode::kL3T1_KEY;
|
||||
|
||||
if (mode_string == "L3T2")
|
||||
return ScalabilityMode::kL3T2;
|
||||
if (mode_string == "L3T2h")
|
||||
return ScalabilityMode::kL3T2h;
|
||||
if (mode_string == "L3T2_KEY")
|
||||
return ScalabilityMode::kL3T2_KEY;
|
||||
|
||||
if (mode_string == "L3T3")
|
||||
return ScalabilityMode::kL3T3;
|
||||
if (mode_string == "L3T3h")
|
||||
return ScalabilityMode::kL3T3h;
|
||||
if (mode_string == "L3T3_KEY")
|
||||
return ScalabilityMode::kL3T3_KEY;
|
||||
|
||||
if (mode_string == "S2T1")
|
||||
return ScalabilityMode::kS2T1;
|
||||
if (mode_string == "S2T1h")
|
||||
return ScalabilityMode::kS2T1h;
|
||||
if (mode_string == "S2T2")
|
||||
return ScalabilityMode::kS2T2;
|
||||
if (mode_string == "S2T2h")
|
||||
return ScalabilityMode::kS2T2h;
|
||||
if (mode_string == "S2T3")
|
||||
return ScalabilityMode::kS2T3;
|
||||
if (mode_string == "S2T3h")
|
||||
return ScalabilityMode::kS2T3h;
|
||||
if (mode_string == "S3T1")
|
||||
return ScalabilityMode::kS3T1;
|
||||
if (mode_string == "S3T1h")
|
||||
return ScalabilityMode::kS3T1h;
|
||||
if (mode_string == "S3T2")
|
||||
return ScalabilityMode::kS3T2;
|
||||
if (mode_string == "S3T2h")
|
||||
return ScalabilityMode::kS3T2h;
|
||||
if (mode_string == "S3T3")
|
||||
return ScalabilityMode::kS3T3;
|
||||
if (mode_string == "S3T3h")
|
||||
return ScalabilityMode::kS3T3h;
|
||||
|
||||
const auto it =
|
||||
absl::c_find_if(kScalabilityModeParams,
|
||||
[&](const ScalabilityModeParameters& candidate_mode) {
|
||||
return candidate_mode.name == mode_string;
|
||||
});
|
||||
if (it != std::end(kScalabilityModeParams)) {
|
||||
return it->scalability_mode;
|
||||
}
|
||||
return absl::nullopt;
|
||||
}
|
||||
|
||||
InterLayerPredMode ScalabilityModeToInterLayerPredMode(
|
||||
ScalabilityMode scalability_mode) {
|
||||
switch (scalability_mode) {
|
||||
case ScalabilityMode::kL1T1:
|
||||
case ScalabilityMode::kL1T2:
|
||||
case ScalabilityMode::kL1T3:
|
||||
case ScalabilityMode::kL2T1:
|
||||
case ScalabilityMode::kL2T1h:
|
||||
return InterLayerPredMode::kOn;
|
||||
case ScalabilityMode::kL2T1_KEY:
|
||||
return InterLayerPredMode::kOnKeyPic;
|
||||
case ScalabilityMode::kL2T2:
|
||||
case ScalabilityMode::kL2T2h:
|
||||
return InterLayerPredMode::kOn;
|
||||
case ScalabilityMode::kL2T2_KEY:
|
||||
case ScalabilityMode::kL2T2_KEY_SHIFT:
|
||||
return InterLayerPredMode::kOnKeyPic;
|
||||
case ScalabilityMode::kL2T3:
|
||||
case ScalabilityMode::kL2T3h:
|
||||
return InterLayerPredMode::kOn;
|
||||
case ScalabilityMode::kL2T3_KEY:
|
||||
return InterLayerPredMode::kOnKeyPic;
|
||||
case ScalabilityMode::kL3T1:
|
||||
case ScalabilityMode::kL3T1h:
|
||||
return InterLayerPredMode::kOn;
|
||||
case ScalabilityMode::kL3T1_KEY:
|
||||
return InterLayerPredMode::kOnKeyPic;
|
||||
case ScalabilityMode::kL3T2:
|
||||
case ScalabilityMode::kL3T2h:
|
||||
return InterLayerPredMode::kOn;
|
||||
case ScalabilityMode::kL3T2_KEY:
|
||||
return InterLayerPredMode::kOnKeyPic;
|
||||
case ScalabilityMode::kL3T3:
|
||||
case ScalabilityMode::kL3T3h:
|
||||
return InterLayerPredMode::kOn;
|
||||
case ScalabilityMode::kL3T3_KEY:
|
||||
return InterLayerPredMode::kOnKeyPic;
|
||||
case ScalabilityMode::kS2T1:
|
||||
case ScalabilityMode::kS2T1h:
|
||||
case ScalabilityMode::kS2T2:
|
||||
case ScalabilityMode::kS2T2h:
|
||||
case ScalabilityMode::kS2T3:
|
||||
case ScalabilityMode::kS2T3h:
|
||||
case ScalabilityMode::kS3T1:
|
||||
case ScalabilityMode::kS3T1h:
|
||||
case ScalabilityMode::kS3T2:
|
||||
case ScalabilityMode::kS3T2h:
|
||||
case ScalabilityMode::kS3T3:
|
||||
case ScalabilityMode::kS3T3h:
|
||||
return InterLayerPredMode::kOff;
|
||||
}
|
||||
RTC_CHECK_NOTREACHED();
|
||||
return kScalabilityModeParams[Idx(scalability_mode)].inter_layer_pred;
|
||||
}
|
||||
|
||||
int ScalabilityModeToNumSpatialLayers(ScalabilityMode scalability_mode) {
|
||||
switch (scalability_mode) {
|
||||
case ScalabilityMode::kL1T1:
|
||||
case ScalabilityMode::kL1T2:
|
||||
case ScalabilityMode::kL1T3:
|
||||
return 1;
|
||||
case ScalabilityMode::kL2T1:
|
||||
case ScalabilityMode::kL2T1h:
|
||||
case ScalabilityMode::kL2T1_KEY:
|
||||
case ScalabilityMode::kL2T2:
|
||||
case ScalabilityMode::kL2T2h:
|
||||
case ScalabilityMode::kL2T2_KEY:
|
||||
case ScalabilityMode::kL2T2_KEY_SHIFT:
|
||||
case ScalabilityMode::kL2T3:
|
||||
case ScalabilityMode::kL2T3h:
|
||||
case ScalabilityMode::kL2T3_KEY:
|
||||
return 2;
|
||||
case ScalabilityMode::kL3T1:
|
||||
case ScalabilityMode::kL3T1h:
|
||||
case ScalabilityMode::kL3T1_KEY:
|
||||
case ScalabilityMode::kL3T2:
|
||||
case ScalabilityMode::kL3T2h:
|
||||
case ScalabilityMode::kL3T2_KEY:
|
||||
case ScalabilityMode::kL3T3:
|
||||
case ScalabilityMode::kL3T3h:
|
||||
case ScalabilityMode::kL3T3_KEY:
|
||||
return 3;
|
||||
case ScalabilityMode::kS2T1:
|
||||
case ScalabilityMode::kS2T1h:
|
||||
case ScalabilityMode::kS2T2:
|
||||
case ScalabilityMode::kS2T2h:
|
||||
case ScalabilityMode::kS2T3:
|
||||
case ScalabilityMode::kS2T3h:
|
||||
return 2;
|
||||
case ScalabilityMode::kS3T1:
|
||||
case ScalabilityMode::kS3T1h:
|
||||
case ScalabilityMode::kS3T2:
|
||||
case ScalabilityMode::kS3T2h:
|
||||
case ScalabilityMode::kS3T3:
|
||||
case ScalabilityMode::kS3T3h:
|
||||
return 3;
|
||||
}
|
||||
RTC_CHECK_NOTREACHED();
|
||||
return kScalabilityModeParams[Idx(scalability_mode)].num_spatial_layers;
|
||||
}
|
||||
|
||||
int ScalabilityModeToNumTemporalLayers(ScalabilityMode scalability_mode) {
|
||||
switch (scalability_mode) {
|
||||
case ScalabilityMode::kL1T1:
|
||||
return 1;
|
||||
case ScalabilityMode::kL1T2:
|
||||
return 2;
|
||||
case ScalabilityMode::kL1T3:
|
||||
return 3;
|
||||
case ScalabilityMode::kL2T1:
|
||||
case ScalabilityMode::kL2T1h:
|
||||
case ScalabilityMode::kL2T1_KEY:
|
||||
return 1;
|
||||
case ScalabilityMode::kL2T2:
|
||||
case ScalabilityMode::kL2T2h:
|
||||
case ScalabilityMode::kL2T2_KEY:
|
||||
case ScalabilityMode::kL2T2_KEY_SHIFT:
|
||||
return 2;
|
||||
case ScalabilityMode::kL2T3:
|
||||
case ScalabilityMode::kL2T3h:
|
||||
case ScalabilityMode::kL2T3_KEY:
|
||||
return 3;
|
||||
case ScalabilityMode::kL3T1:
|
||||
case ScalabilityMode::kL3T1h:
|
||||
case ScalabilityMode::kL3T1_KEY:
|
||||
return 1;
|
||||
case ScalabilityMode::kL3T2:
|
||||
case ScalabilityMode::kL3T2h:
|
||||
case ScalabilityMode::kL3T2_KEY:
|
||||
return 2;
|
||||
case ScalabilityMode::kL3T3:
|
||||
case ScalabilityMode::kL3T3h:
|
||||
case ScalabilityMode::kL3T3_KEY:
|
||||
return 3;
|
||||
case ScalabilityMode::kS2T1:
|
||||
case ScalabilityMode::kS2T1h:
|
||||
case ScalabilityMode::kS3T1:
|
||||
case ScalabilityMode::kS3T1h:
|
||||
return 1;
|
||||
case ScalabilityMode::kS2T2:
|
||||
case ScalabilityMode::kS2T2h:
|
||||
case ScalabilityMode::kS3T2:
|
||||
case ScalabilityMode::kS3T2h:
|
||||
return 2;
|
||||
case ScalabilityMode::kS2T3:
|
||||
case ScalabilityMode::kS2T3h:
|
||||
case ScalabilityMode::kS3T3:
|
||||
case ScalabilityMode::kS3T3h:
|
||||
return 3;
|
||||
}
|
||||
RTC_CHECK_NOTREACHED();
|
||||
return kScalabilityModeParams[Idx(scalability_mode)].num_temporal_layers;
|
||||
}
|
||||
|
||||
absl::optional<ScalabilityModeResolutionRatio> ScalabilityModeToResolutionRatio(
|
||||
ScalabilityMode scalability_mode) {
|
||||
switch (scalability_mode) {
|
||||
case ScalabilityMode::kL1T1:
|
||||
case ScalabilityMode::kL1T2:
|
||||
case ScalabilityMode::kL1T3:
|
||||
return absl::nullopt;
|
||||
case ScalabilityMode::kL2T1:
|
||||
case ScalabilityMode::kL2T1_KEY:
|
||||
case ScalabilityMode::kL2T2:
|
||||
case ScalabilityMode::kL2T2_KEY:
|
||||
case ScalabilityMode::kL2T2_KEY_SHIFT:
|
||||
case ScalabilityMode::kL2T3:
|
||||
case ScalabilityMode::kL2T3_KEY:
|
||||
case ScalabilityMode::kL3T1:
|
||||
case ScalabilityMode::kL3T1_KEY:
|
||||
case ScalabilityMode::kL3T2:
|
||||
case ScalabilityMode::kL3T2_KEY:
|
||||
case ScalabilityMode::kL3T3:
|
||||
case ScalabilityMode::kL3T3_KEY:
|
||||
case ScalabilityMode::kS2T1:
|
||||
case ScalabilityMode::kS2T2:
|
||||
case ScalabilityMode::kS2T3:
|
||||
case ScalabilityMode::kS3T1:
|
||||
case ScalabilityMode::kS3T2:
|
||||
case ScalabilityMode::kS3T3:
|
||||
return ScalabilityModeResolutionRatio::kTwoToOne;
|
||||
case ScalabilityMode::kL2T1h:
|
||||
case ScalabilityMode::kL2T2h:
|
||||
case ScalabilityMode::kL2T3h:
|
||||
case ScalabilityMode::kL3T1h:
|
||||
case ScalabilityMode::kL3T2h:
|
||||
case ScalabilityMode::kL3T3h:
|
||||
case ScalabilityMode::kS2T1h:
|
||||
case ScalabilityMode::kS2T2h:
|
||||
case ScalabilityMode::kS2T3h:
|
||||
case ScalabilityMode::kS3T1h:
|
||||
case ScalabilityMode::kS3T2h:
|
||||
case ScalabilityMode::kS3T3h:
|
||||
return ScalabilityModeResolutionRatio::kThreeToTwo;
|
||||
}
|
||||
RTC_CHECK_NOTREACHED();
|
||||
return kScalabilityModeParams[Idx(scalability_mode)].ratio;
|
||||
}
|
||||
|
||||
ScalabilityMode LimitNumSpatialLayers(ScalabilityMode scalability_mode,
|
||||
@ -490,7 +458,7 @@ ScalabilityMode LimitNumSpatialLayers(ScalabilityMode scalability_mode,
|
||||
}
|
||||
|
||||
bool ScalabilityModeIsShiftMode(ScalabilityMode scalability_mode) {
|
||||
return scalability_mode == ScalabilityMode::kL2T2_KEY_SHIFT;
|
||||
return kScalabilityModeParams[Idx(scalability_mode)].shift;
|
||||
}
|
||||
|
||||
} // namespace webrtc
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user