Re: [PATCH v2 1/2] Monitor: Modify design of AVRCP callback functions

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Hi,

On Fri, Sep 12, 2014 at 4:16 PM, Vikrampal Yadav <vikram.pal@xxxxxxxxxxx> wrote:
> Modified the design of AVRCP callback functions.
> ---
>  monitor/avctp.c | 103 ++++++++++++++++++++++++++++++++++++--------------------
>  1 file changed, 66 insertions(+), 37 deletions(-)
>
> diff --git a/monitor/avctp.c b/monitor/avctp.c
> index c7e242b..f366b87 100644
> --- a/monitor/avctp.c
> +++ b/monitor/avctp.c
> @@ -158,6 +158,13 @@
>  #define AVRCP_ATTRIBUTE_SHUFFLE                0x03
>  #define AVRCP_ATTRIBUTE_SCAN           0x04
>
> +struct avctp_frame {
> +       uint8_t hdr;
> +       uint8_t pt;
> +       uint16_t pid;
> +       struct l2cap_frame l2cap_frame;
> +};
> +
>  static const char *ctype2str(uint8_t ctype)
>  {
>         switch (ctype & 0x0f) {
> @@ -517,15 +524,19 @@ static const char *charset2str(uint16_t charset)
>         }
>  }
>
> -static bool avrcp_passthrough_packet(struct l2cap_frame *frame)
> +static bool avrcp_passthrough_packet(struct avctp_frame *avctp_frame)
>  {
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
> +
>         packet_hexdump(frame->data, frame->size);
>         return true;
>  }
>
> -static bool avrcp_get_capabilities(struct l2cap_frame *frame, uint8_t ctype,
> -                                               uint8_t len, uint8_t indent)
> +static bool avrcp_get_capabilities(struct avctp_frame *avctp_frame,
> +                                       uint8_t ctype, uint8_t len,
> +                                       uint8_t indent)
>  {
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
>         uint8_t cap, count;
>         int i;
>
> @@ -576,10 +587,11 @@ static bool avrcp_get_capabilities(struct l2cap_frame *frame, uint8_t ctype,
>         return true;
>  }
>
> -static bool avrcp_list_player_attributes(struct l2cap_frame *frame,
> +static bool avrcp_list_player_attributes(struct avctp_frame *avctp_frame,
>                                                 uint8_t ctype, uint8_t len,
>                                                 uint8_t indent)
>  {
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
>         uint8_t num;
>         int i;
>
> @@ -604,9 +616,11 @@ static bool avrcp_list_player_attributes(struct l2cap_frame *frame,
>         return true;
>  }
>
> -static bool avrcp_list_player_values(struct l2cap_frame *frame, uint8_t ctype,
> -                                               uint8_t len, uint8_t indent)
> +static bool avrcp_list_player_values(struct avctp_frame *avctp_frame,
> +                                       uint8_t ctype, uint8_t len,
> +                                       uint8_t indent)
>  {
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
>         static uint8_t attr = 0;
>         uint8_t num;
>
> @@ -640,10 +654,11 @@ response:
>         return true;
>  }
>
> -static bool avrcp_get_current_player_value(struct l2cap_frame *frame,
> +static bool avrcp_get_current_player_value(struct avctp_frame *avctp_frame,
>                                                 uint8_t ctype, uint8_t len,
>                                                 uint8_t indent)
>  {
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
>         uint8_t num;
>
>         if (!l2cap_frame_get_u8(frame, &num))
> @@ -688,9 +703,11 @@ response:
>         return true;
>  }
>
> -static bool avrcp_set_player_value(struct l2cap_frame *frame, uint8_t ctype,
> -                                       uint8_t len, uint8_t indent)
> +static bool avrcp_set_player_value(struct avctp_frame *avctp_frame,
> +                                       uint8_t ctype, uint8_t len,
> +                                       uint8_t indent)
>  {
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
>         uint8_t num;
>
>         if (ctype > AVC_CTYPE_GENERAL_INQUIRY)
> @@ -720,10 +737,11 @@ static bool avrcp_set_player_value(struct l2cap_frame *frame, uint8_t ctype,
>         return true;
>  }
>
> -static bool avrcp_get_player_attribute_text(struct l2cap_frame *frame,
> +static bool avrcp_get_player_attribute_text(struct avctp_frame *avctp_frame,
>                                                 uint8_t ctype, uint8_t len,
>                                                 uint8_t indent)
>  {
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
>         uint8_t num;
>
>         if (!l2cap_frame_get_u8(frame, &num))
> @@ -783,10 +801,11 @@ response:
>         return true;
>  }
>
> -static bool avrcp_get_player_value_text(struct l2cap_frame *frame,
> +static bool avrcp_get_player_value_text(struct avctp_frame *avctp_frame,
>                                         uint8_t ctype, uint8_t len,
>                                         uint8_t indent)
>  {
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
>         static uint8_t attr = 0;
>         uint8_t num;
>
> @@ -858,9 +877,11 @@ response:
>         return true;
>  }
>
> -static bool avrcp_displayable_charset(struct l2cap_frame *frame, uint8_t ctype,
> -                                       uint8_t len, uint8_t indent)
> +static bool avrcp_displayable_charset(struct avctp_frame *avctp_frame,
> +                                       uint8_t ctype, uint8_t len,
> +                                       uint8_t indent)
>  {
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
>         uint8_t num;
>
>         if (ctype > AVC_CTYPE_GENERAL_INQUIRY)
> @@ -886,8 +907,8 @@ static bool avrcp_displayable_charset(struct l2cap_frame *frame, uint8_t ctype,
>
>  struct avrcp_ctrl_pdu_data {
>         uint8_t pduid;
> -       bool (*func) (struct l2cap_frame *frame, uint8_t ctype, uint8_t len,
> -                                                       uint8_t indent);
> +       bool (*func) (struct avctp_frame *avctp_frame, uint8_t ctype,
> +                                               uint8_t len, uint8_t indent);
>  };
>
>  static const struct avrcp_ctrl_pdu_data avrcp_ctrl_pdu_table[] = {
> @@ -915,10 +936,11 @@ static bool avrcp_rejected_packet(struct l2cap_frame *frame, uint8_t indent)
>         return true;
>  }
>
> -static bool avrcp_pdu_packet(struct l2cap_frame *frame, uint8_t ctype,
> +static bool avrcp_pdu_packet(struct avctp_frame *avctp_frame, uint8_t ctype,
>                                                                 uint8_t indent)
>  {
> -       uint8_t pduid, pt;
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
> +       uint8_t pduid;
>         uint16_t len;
>         int i;
>         const struct avrcp_ctrl_pdu_data *ctrl_pdu_data = NULL;
> @@ -926,14 +948,14 @@ static bool avrcp_pdu_packet(struct l2cap_frame *frame, uint8_t ctype,
>         if (!l2cap_frame_get_u8(frame, &pduid))
>                 return false;
>
> -       if (!l2cap_frame_get_u8(frame, &pt))
> +       if (!l2cap_frame_get_u8(frame, &avctp_frame->pt))
>                 return false;
>
>         if (!l2cap_frame_get_be16(frame, &len))
>                 return false;
>
>         print_indent(indent, COLOR_OFF, "AVRCP: ", pdu2str(pduid), COLOR_OFF,
> -                                       " pt %s len 0x%04x", pt2str(pt), len);
> +                       " pt %s len 0x%04x", pt2str(avctp_frame->pt), len);
>
>         if (frame->size != len)
>                 return false;
> @@ -953,11 +975,13 @@ static bool avrcp_pdu_packet(struct l2cap_frame *frame, uint8_t ctype,
>                 return true;
>         }
>
> -       return ctrl_pdu_data->func(frame, ctype, len, indent + 2);
> +       return ctrl_pdu_data->func(avctp_frame, ctype, len, indent + 2);
>  }
>
> -static bool avrcp_control_packet(struct l2cap_frame *frame)
> +static bool avrcp_control_packet(struct avctp_frame *avctp_frame)
>  {
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
> +
>         uint8_t ctype, address, subunit, opcode, company[3], indent = 2;
>
>         if (!l2cap_frame_get_u8(frame, &ctype) ||
> @@ -988,7 +1012,7 @@ static bool avrcp_control_packet(struct l2cap_frame *frame)
>
>         switch (opcode) {
>         case 0x7c:
> -               return avrcp_passthrough_packet(frame);
> +               return avrcp_passthrough_packet(avctp_frame);
>         case 0x00:
>                 if (!l2cap_frame_get_u8(frame, &company[0]) ||
>                                 !l2cap_frame_get_u8(frame, &company[1]) ||
> @@ -998,29 +1022,32 @@ static bool avrcp_control_packet(struct l2cap_frame *frame)
>                 print_field("%*cCompany ID: 0x%02x%02x%02x", indent, ' ',
>                                         company[0], company[1], company[2]);
>
> -               return avrcp_pdu_packet(frame, ctype, 10);
> +               return avrcp_pdu_packet(avctp_frame, ctype, 10);
>         default:
>                 packet_hexdump(frame->data, frame->size);
>                 return true;
>         }
>  }
>
> -static bool avrcp_browsing_packet(struct l2cap_frame *frame, uint8_t hdr)
> +static bool avrcp_browsing_packet(struct avctp_frame *avctp_frame)
>  {
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
> +
>         packet_hexdump(frame->data, frame->size);
>         return true;
>  }
>
> -static void avrcp_packet(struct l2cap_frame *frame, uint8_t hdr)
> +static void avrcp_packet(struct avctp_frame *avctp_frame)
>  {
> +       struct l2cap_frame *frame = &avctp_frame->l2cap_frame;
>         bool ret;
>
>         switch (frame->psm) {
>         case 0x17:
> -               ret = avrcp_control_packet(frame);
> +               ret = avrcp_control_packet(avctp_frame);
>                 break;
>         case 0x1B:
> -               ret = avrcp_browsing_packet(frame, hdr);
> +               ret = avrcp_browsing_packet(avctp_frame);
>                 break;
>         default:
>                 packet_hexdump(frame->data, frame->size);
> @@ -1035,15 +1062,16 @@ static void avrcp_packet(struct l2cap_frame *frame, uint8_t hdr)
>
>  void avctp_packet(const struct l2cap_frame *frame)
>  {
> -       uint8_t hdr;
> -       uint16_t pid;
> -       struct l2cap_frame avctp_frame;
> +       struct l2cap_frame *l2cap_frame;
> +       struct avctp_frame avctp_frame;
>         const char *pdu_color;
>
> -       l2cap_frame_pull(&avctp_frame, frame, 0);
> +       l2cap_frame_pull(&avctp_frame.l2cap_frame, frame, 0);
> +
> +       l2cap_frame = &avctp_frame.l2cap_frame;
>
> -       if (!l2cap_frame_get_u8(&avctp_frame, &hdr) ||
> -                               !l2cap_frame_get_be16(&avctp_frame, &pid)) {
> +       if (!l2cap_frame_get_u8(l2cap_frame, &avctp_frame.hdr) ||
> +                       !l2cap_frame_get_be16(l2cap_frame, &avctp_frame.pid)) {
>                 print_text(COLOR_ERROR, "frame too short");
>                 packet_hexdump(frame->data, frame->size);
>                 return;
> @@ -1057,11 +1085,12 @@ void avctp_packet(const struct l2cap_frame *frame)
>         print_indent(6, pdu_color, "AVCTP", "", COLOR_OFF,
>                                 " %s: %s: type 0x%02x label %d PID 0x%04x",
>                                 frame->psm == 23 ? "Control" : "Browsing",
> -                               hdr & 0x02 ? "Response" : "Command",
> -                               hdr & 0x0c, hdr >> 4, pid);
> +                               avctp_frame.hdr & 0x02 ? "Response" : "Command",
> +                               avctp_frame.hdr & 0x0c, avctp_frame.hdr >> 4,
> +                               avctp_frame.pid);
>
> -       if (pid == 0x110e || pid == 0x110c)
> -               avrcp_packet(&avctp_frame, hdr);
> +       if (avctp_frame.pid == 0x110e || avctp_frame.pid == 0x110c)
> +               avrcp_packet(&avctp_frame);
>         else
>                 packet_hexdump(frame->data, frame->size);
>  }
> --
> 1.9.1

Pushed, thanks.


-- 
Luiz Augusto von Dentz
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