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Parameterize "forbid analog" in mod mock

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Merge from Widevine repo of http://go/wvgerrit/43660

This CL adds parameters to the mod mock to control various analog
output behaviour.

bug: 38005556

Change-Id: I308b300a2dd73f6bb7fb798d56c2c631a09f3765
This commit is contained in:
Fred Gylys-Colwell
2018-09-18 16:41:36 -07:00
parent f4258cc628
commit 48b8fa860e
3 changed files with 42 additions and 8 deletions
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14
libwvdrmengine/oemcrypto/ref/src/oemcrypto_engine_ref.h
View File

@@ -94,6 +94,20 @@ class CryptoEngine {
// Returns the max HDCP version supported.
virtual OEMCrypto_HDCP_Capability config_maximum_hdcp_capability();
// Return true if there might be analog video output enabled.
virtual bool analog_display_active() {
return !config_local_display_only();
}
// Return true if there is an analog display, and CGMS A is turned on.
virtual bool cgms_a_active() { return false; }
// Return the analog output flags.
virtual uint32_t analog_output_flags() {
return config_local_display_only() ? OEMCrypto_No_Analog_Output
: OEMCrypto_Supports_Analog_Output;
}
UsageTable& usage_table() { return *(usage_table_.get()); }
wvcdm::FileSystem* file_system() { return file_system_.get(); }

11
libwvdrmengine/oemcrypto/ref/src/oemcrypto_ref.cpp
View File

@@ -1140,11 +1140,18 @@ extern "C" OEMCryptoResult OEMCrypto_GetHDCPCapability(
}
extern "C" uint32_t OEMCrypto_GetAnalogOutputFlags() {
// TODO(b/69867568, fredgc): parameterize this.
return 0;
if (!crypto_engine) {
LOGE("OEMCrypto_GetAnalogOutputFlags: OEMCrypto Not Initialized.");
return 0;
}
return crypto_engine->analog_output_flags();
}
extern "C" bool OEMCrypto_SupportsUsageTable() {
if (!crypto_engine) {
LOGE("OEMCrypto_SupportsUsageTable: OEMCrypto Not Initialized.");
return 0;
}
bool supports_usage = crypto_engine->config_supports_usage_table();
return supports_usage;
}

25
libwvdrmengine/oemcrypto/ref/src/oemcrypto_session.cpp
View File

@@ -917,8 +917,7 @@ OEMCryptoResult SessionContext::CheckKeyUse(const std::string& log_string,
}
}
if (!ce_->config_local_display_only()) {
// Only look at HDCP and Analog restrictions if the display can be
// non-local.
// Only look at HDCP restrictions if the display can be non-local.
if (control.control_bits() & wvoec::kControlHDCPRequired) {
uint8_t required_hdcp =
(control.control_bits() & wvoec::kControlHDCPVersionMask) >>
@@ -934,10 +933,24 @@ OEMCryptoResult SessionContext::CheckKeyUse(const std::string& log_string,
}
}
}
if (!ce_->config_local_display_only() ||
buffer_type == OEMCrypto_BufferType_Clear) {
if (control.control_bits() & wvoec::kControlDisableAnalogOutput) {
LOGE("[%s(): control bit says disable analog.", log_string.c_str());
// If the output buffer is clear, then we cannot control whether the output is
// an active analog display. In that case, return an error if analog displays
// should be disabled.
if ((control.control_bits() & wvoec::kControlDisableAnalogOutput) &&
(ce_->analog_display_active() ||
(buffer_type == OEMCrypto_BufferType_Clear))) {
LOGE("[%s(): control bit says disable analog.", log_string.c_str());
return OEMCrypto_ERROR_ANALOG_OUTPUT;
}
// Check if CGMS is required.
if (control.control_bits() & wvoec::kControlCGMSMask) {
// We can't control CGMS for a clear buffer.
if (buffer_type == OEMCrypto_BufferType_Clear) {
LOGE("[%s(): CGMS required, but buffer is clear.", log_string.c_str());
return OEMCrypto_ERROR_ANALOG_OUTPUT;
}
if ( ce_->analog_display_active() && !ce_->cgms_a_active()) {
LOGE("[%s(): control bit says CGMS required.", log_string.c_str());
return OEMCrypto_ERROR_ANALOG_OUTPUT;
}
}