| # Copyright 2014 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| from telemetry.internal.platform import tracing_agent |
| from telemetry.timeline import trace_data |
| |
| |
| class DisplayTracingAgent(tracing_agent.TracingAgent): |
| def __init__(self, platform_backend): |
| super(DisplayTracingAgent, self).__init__(platform_backend) |
| |
| @classmethod |
| def IsSupported(cls, platform_backend): |
| return platform_backend.IsDisplayTracingSupported() |
| |
| def StartAgentTracing(self, config, timeout): |
| del timeout # unused |
| if config.enable_platform_display_trace: |
| self._platform_backend.StartDisplayTracing() |
| return True |
| |
| def StopAgentTracing(self, trace_data_builder): |
| surface_flinger_trace_data = self._platform_backend.StopDisplayTracing() |
| trace_data_builder.AddEventsTo( |
| trace_data.SURFACE_FLINGER_PART, surface_flinger_trace_data) |
