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Commit 71113d84 authored by TreeHugger Robot's avatar TreeHugger Robot Committed by Android (Google) Code Review
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Merge "Add MTP and PTP OS descriptors." into oc-mr1-dev

parents 0faac73f 4d7ccef3

media/mtp/MtpFfsHandle.cpp

+32 −1
Original line number Diff line number Diff line
@@ -102,8 +102,11 @@ struct desc_v2 { 
    __le32 fs_count;

    __le32 hs_count;

    __le32 ss_count;

    __le32 os_count;

    struct func_desc fs_descs, hs_descs;

    struct ss_func_desc ss_descs;

    struct usb_os_desc_header os_header;

    struct usb_ext_compat_desc os_desc;

} __attribute__((packed));



const struct usb_interface_descriptor mtp_interface_desc = {
@@ -287,6 +290,31 @@ const struct { 
    },

};



struct usb_os_desc_header mtp_os_desc_header = {

    .interface = htole32(1),

    .dwLength = htole32(sizeof(usb_os_desc_header) + sizeof(usb_ext_compat_desc)),

    .bcdVersion = htole16(1),

    .wIndex = htole16(4),

    .bCount = htole16(1),

    .Reserved = htole16(0),

};



struct usb_ext_compat_desc mtp_os_desc_compat = {

    .bFirstInterfaceNumber = 0,

    .Reserved1 = htole32(1),

    .CompatibleID = { 'M', 'T', 'P' },

    .SubCompatibleID = {0},

    .Reserved2 = {0},

};



struct usb_ext_compat_desc ptp_os_desc_compat = {

    .bFirstInterfaceNumber = 0,

    .Reserved1 = htole32(1),

    .CompatibleID = { 'P', 'T', 'P' },

    .SubCompatibleID = {0},

    .Reserved2 = {0},

};



} // anonymous namespace



namespace android {
@@ -311,13 +339,16 @@ bool MtpFfsHandle::initFunctionfs() { 
    v2_descriptor.header.magic = cpu_to_le32(FUNCTIONFS_DESCRIPTORS_MAGIC_V2);

    v2_descriptor.header.length = cpu_to_le32(sizeof(v2_descriptor));

    v2_descriptor.header.flags = FUNCTIONFS_HAS_FS_DESC | FUNCTIONFS_HAS_HS_DESC |

                                 FUNCTIONFS_HAS_SS_DESC;

                                 FUNCTIONFS_HAS_SS_DESC | FUNCTIONFS_HAS_MS_OS_DESC;

    v2_descriptor.fs_count = 4;

    v2_descriptor.hs_count = 4;

    v2_descriptor.ss_count = 7;

    v2_descriptor.os_count = 1;

    v2_descriptor.fs_descs = mPtp ? ptp_fs_descriptors : mtp_fs_descriptors;

    v2_descriptor.hs_descs = mPtp ? ptp_hs_descriptors : mtp_hs_descriptors;

    v2_descriptor.ss_descs = mPtp ? ptp_ss_descriptors : mtp_ss_descriptors;

    v2_descriptor.os_header = mtp_os_desc_header;

    v2_descriptor.os_desc = mPtp ? ptp_os_desc_compat : mtp_os_desc_compat;



    if (mControl < 0) { // might have already done this before

        mControl.reset(TEMP_FAILURE_RETRY(open(FFS_MTP_EP0, O_RDWR)));