diff options
Diffstat (limited to 'media')
| -rw-r--r-- | media/libmedia/IAudioFlinger.cpp | 46 |
1 files changed, 36 insertions, 10 deletions
diff --git a/media/libmedia/IAudioFlinger.cpp b/media/libmedia/IAudioFlinger.cpp index 6f038ea..38055f9 100644 --- a/media/libmedia/IAudioFlinger.cpp +++ b/media/libmedia/IAudioFlinger.cpp @@ -83,6 +83,8 @@ enum { GET_AUDIO_HW_SYNC }; +#define MAX_ITEMS_PER_LIST 1024 + class BpAudioFlinger : public BpInterface<IAudioFlinger> { public: @@ -1289,15 +1291,27 @@ status_t BnAudioFlinger::onTransact( } break; case LIST_AUDIO_PORTS: { CHECK_INTERFACE(IAudioFlinger, data, reply); - unsigned int num_ports = data.readInt32(); + unsigned int numPortsReq = data.readInt32(); + if (numPortsReq > MAX_ITEMS_PER_LIST) { + numPortsReq = MAX_ITEMS_PER_LIST; + } + unsigned int numPorts = numPortsReq; struct audio_port *ports = - (struct audio_port *)calloc(num_ports, + (struct audio_port *)calloc(numPortsReq, sizeof(struct audio_port)); - status_t status = listAudioPorts(&num_ports, ports); + if (ports == NULL) { + reply->writeInt32(NO_MEMORY); + reply->writeInt32(0); + return NO_ERROR; + } + status_t status = listAudioPorts(&numPorts, ports); reply->writeInt32(status); + reply->writeInt32(numPorts); if (status == NO_ERROR) { - reply->writeInt32(num_ports); - reply->write(&ports, num_ports * sizeof(struct audio_port)); + if (numPortsReq > numPorts) { + numPortsReq = numPorts; + } + reply->write(ports, numPortsReq * sizeof(struct audio_port)); } free(ports); return NO_ERROR; @@ -1336,15 +1350,27 @@ status_t BnAudioFlinger::onTransact( } break; case LIST_AUDIO_PATCHES: { CHECK_INTERFACE(IAudioFlinger, data, reply); - unsigned int num_patches = data.readInt32(); + unsigned int numPatchesReq = data.readInt32(); + if (numPatchesReq > MAX_ITEMS_PER_LIST) { + numPatchesReq = MAX_ITEMS_PER_LIST; + } + unsigned int numPatches = numPatchesReq; struct audio_patch *patches = - (struct audio_patch *)calloc(num_patches, + (struct audio_patch *)calloc(numPatchesReq, sizeof(struct audio_patch)); - status_t status = listAudioPatches(&num_patches, patches); + if (patches == NULL) { + reply->writeInt32(NO_MEMORY); + reply->writeInt32(0); + return NO_ERROR; + } + status_t status = listAudioPatches(&numPatches, patches); reply->writeInt32(status); + reply->writeInt32(numPatches); if (status == NO_ERROR) { - reply->writeInt32(num_patches); - reply->write(&patches, num_patches * sizeof(struct audio_patch)); + if (numPatchesReq > numPatches) { + numPatchesReq = numPatches; + } + reply->write(patches, numPatchesReq * sizeof(struct audio_patch)); } free(patches); return NO_ERROR; |