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Protect vtxCommonLookupXXX against null vtxDevice call

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This commit is contained in:
jflyper 2019-01-17 13:52:51 +09:00
parent 80c1cfa6db
commit 53ab1ad23e
1 changed files with 41 additions and 17 deletions
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58
src/main/drivers/vtx_common.c
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@ -128,30 +128,44 @@ bool vtxCommonGetDeviceCapability(const vtxDevice_t *vtxDevice, vtxDeviceCapabil
const char *vtxCommonLookupBandName(const vtxDevice_t *vtxDevice, int band)
{
return vtxDevice->bandNames[band];
if (vtxDevice) {
return vtxDevice->bandNames[band];
} else {
return "?";
}
}
char vtxCommonLookupBandLetter(const vtxDevice_t *vtxDevice, int band)
{
return vtxDevice->bandLetters[band];
if (vtxDevice) {
return vtxDevice->bandLetters[band];
} else {
return '?';
}
}
const char *vtxCommonLookupChannelName(const vtxDevice_t *vtxDevice, int channel)
{
return vtxDevice->channelNames[channel];
if (vtxDevice) {
return vtxDevice->channelNames[channel];
} else {
return "?";
}
}
//Converts frequency (in MHz) to band and channel values.
bool vtxCommonLookupBandChan(const vtxDevice_t *vtxDevice, uint16_t freq, uint8_t *pBand, uint8_t *pChannel)
{
// Use reverse lookup order so that 5880Mhz
// get Raceband 7 instead of Fatshark 8.
for (int band = vtxDevice->capability.bandCount - 1 ; band >= 0 ; band--) {
for (int channel = 0 ; channel < vtxDevice->capability.channelCount ; channel++) {
if (vtxDevice->frequencyTable[band * vtxDevice->capability.channelCount + channel] == freq) {
*pBand = band + 1;
*pChannel = channel + 1;
return true;
if (vtxDevice) {
// Use reverse lookup order so that 5880Mhz
// get Raceband 7 instead of Fatshark 8.
for (int band = vtxDevice->capability.bandCount - 1 ; band >= 0 ; band--) {
for (int channel = 0 ; channel < vtxDevice->capability.channelCount ; channel++) {
if (vtxDevice->frequencyTable[band * vtxDevice->capability.channelCount + channel] == freq) {
*pBand = band + 1;
*pChannel = channel + 1;
return true;
}
}
}
}
@ -168,21 +182,31 @@ bool vtxCommonLookupBandChan(const vtxDevice_t *vtxDevice, uint16_t freq, uint8_
// Returns frequency value (in MHz), or 0 if band/channel out of range.
uint16_t vtxCommonLookupFrequency(const vtxDevice_t *vtxDevice, int band, int channel)
{
if (vtxDevice && band > 0 && band <= vtxDevice->capability.bandCount &&
channel > 0 && channel <= vtxDevice->capability.channelCount) {
return vtxDevice->frequencyTable[(band - 1) * vtxDevice->capability.channelCount + (channel - 1)];
if (vtxDevice) {
if (band > 0 && band <= vtxDevice->capability.bandCount &&
channel > 0 && channel <= vtxDevice->capability.channelCount) {
return vtxDevice->frequencyTable[(band - 1) * vtxDevice->capability.channelCount + (channel - 1)];
}
}
return 0;
}
const char *vtxCommonLookupPowerName(const vtxDevice_t *vtxDevice, int index)
{
return vtxDevice->powerNames[index];
if (vtxDevice) {
return vtxDevice->powerNames[index];
} else {
return "?";
}
}
uint16_t vtxCommonLookupPowerValue(const vtxDevice_t *vtxDevice, int index)
{
return vtxDevice->powerValues[index];
if (vtxDevice) {
return vtxDevice->powerValues[index];
} else {
return 0;
}
}
#endif