rockbox/apps/iap/iap-lingo3.c

1509 lines
42 KiB
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Alan Korr & Nick Robinson
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/* Lingo 0x03: Display Remote Lingo
*
* A bit of a hodgepogde of odds and ends.
*
* Used to control the equalizer in version 1.00 of the Lingo, but later
* grew functions to control album art transfer and check the player
* status.
*
* TODO:
* - Actually support multiple equalizer profiles, currently only the
* profile 0 (equalizer disabled) is supported
*/
#include "iap-core.h"
#include "iap-lingo.h"
#include "system.h"
#include "audio.h"
#include "powermgmt.h"
#include "settings.h"
#include "metadata.h"
#include "playback.h"
/*
* This macro is meant to be used inside an IAP mode message handler.
* It is passed the expected minimum length of the message buffer.
* If the buffer does not have the required lenght an ACK
* packet with a Bad Parameter error is generated.
*/
#define CHECKLEN(x) do { \
if (len < (x)) { \
cmd_ack(cmd, IAP_ACK_BAD_PARAM); \
return; \
}} while(0)
/* Check for authenticated state, and return an ACK Not
* Authenticated on failure.
*/
#define CHECKAUTH do { \
if (!DEVICE_AUTHENTICATED) { \
cmd_ack(cmd, IAP_ACK_NO_AUTHEN); \
return; \
}} while(0)
static void cmd_ack(const unsigned char cmd, const unsigned char status)
{
IAP_TX_INIT(0x03, 0x00);
IAP_TX_PUT(status);
IAP_TX_PUT(cmd);
iap_send_tx();
}
#define cmd_ok(cmd) cmd_ack((cmd), IAP_ACK_OK)
void iap_handlepkt_mode3(const unsigned int len, const unsigned char *buf)
{
unsigned int cmd = buf[1];
/* We expect at least two bytes in the buffer, one for the
* state bits.
*/
CHECKLEN(2);
/* Lingo 0x03 must have been negotiated */
if (!DEVICE_LINGO_SUPPORTED(0x03)) {
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
return;
}
switch (cmd)
{
/* ACK (0x00)
*
* Sent from the iPod to the device
*/
/* GetCurrentEQProfileIndex (0x01)
*
* Return the index of the current equalizer profile.
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x01
*
* Returns:
* RetCurrentEQProfileIndex
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x02
* 0x02-0x05: Index as an unsigned 32bit integer
*/
case 0x01:
{
IAP_TX_INIT(0x03, 0x02);
IAP_TX_PUT_U32(0x00);
iap_send_tx();
break;
}
/* RetCurrentEQProfileIndex (0x02)
*
* Sent from the iPod to the device
*/
/* SetCurrentEQProfileIndex (0x03)
*
* Set the active equalizer profile
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x03
* 0x02-0x05: Profile index to activate
* 0x06: Whether to restore the previous profile on detach
*
* Returns on success:
* IAP_ACK_OK
*
* Returns on failure:
* IAP_ACK_CMD_FAILED
*
* TODO: Figure out return code for invalid index
*/
case 0x03:
{
uint32_t index;
CHECKLEN(7);
index = get_u32(&buf[2]);
if (index > 0) {
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
break;
}
/* Currently, we just ignore the command and acknowledge it */
cmd_ok(cmd);
break;
}
/* GetNumEQProfiles (0x04)
*
* Get the number of available equalizer profiles
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x04
*
* Returns:
* RetNumEQProfiles
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x05
* 0x02-0x05: Number as an unsigned 32bit integer
*/
case 0x04:
{
IAP_TX_INIT(0x03, 0x05);
/* Return one profile (0, the disabled profile) */
IAP_TX_PUT_U32(0x01);
iap_send_tx();
break;
}
/* RetNumEQProfiles (0x05)
*
* Sent from the iPod to the device
*/
/* GetIndexedEQProfileName (0x06)
*
* Return the name of the indexed equalizer profile
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x06
* 0x02-0x05: Profile index to get the name of
*
* Returns on success:
* RetIndexedEQProfileName
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x06
* 0x02-0xNN: Name as an UTF-8 null terminated string
*
* Returns on failure:
* IAP_ACK_BAD_PARAM
*
* TODO: Figure out return code for out of range index
*/
case 0x06:
{
uint32_t index;
CHECKLEN(6);
index = get_u32(&buf[2]);
if (index > 0) {
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
break;
}
IAP_TX_INIT(0x03, 0x07);
IAP_TX_PUT_STRING("Default");
iap_send_tx();
break;
}
/* RetIndexedQUProfileName (0x07)
*
* Sent from the iPod to the device
*/
/* SetRemoteEventNotification (0x08)
*
* Set events the device would like to be notified about
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x08
* 0x02-0x05: Event bitmask
*
* Returns:
* IAP_ACK_OK
*/
case 0x08:
{
struct tm* tm;
CHECKLEN(6);
CHECKAUTH;
/* Save the current state of the various attributes we track */
device.trackpos_ms = iap_get_trackpos();
device.track_index = iap_get_trackindex();
device.chapter_index = 0;
device.play_status = audio_status();
/* TODO: Fix this */
device.mute = false;
device.volume = 0x80;
device.power_state = charger_input_state;
device.battery_level = battery_level();
/* TODO: Fix this */
device.equalizer_index = 0;
device.shuffle = global_settings.playlist_shuffle;
device.repeat = global_settings.repeat_mode;
tm = get_time();
memcpy(&(device.datetime), tm, sizeof(struct tm));
device.alarm_state = 0;
device.alarm_hour = 0;
device.alarm_minute = 0;
/* TODO: Fix this */
device.backlight = 0;
device.hold = button_hold();
device.soundcheck = 0;
device.audiobook = 0;
device.trackpos_s = (device.trackpos_ms/1000) & 0xFFFF;
/* Get the notification bits */
device.do_notify = false;
device.changed_notifications = 0;
device.notifications = get_u32(&buf[0x02]);
if (device.notifications)
device.do_notify = true;
cmd_ok(cmd);
break;
}
/* RemoteEventNotification (0x09)
*
* Sent from the iPod to the device
*/
/* GetRemoteEventStatus (0x0A)
*
* Request the events changed since the last call to GetREmoteEventStatus
* or SetRemoteEventNotification
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x0A
*
* This command requires authentication
*
* Returns:
* RetRemoteEventNotification
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x0B
* 0x02-0x05: Event status bits
*/
case 0x0A:
{
CHECKAUTH;
IAP_TX_INIT(0x03, 0x0B);
IAP_TX_PUT_U32(device.changed_notifications);
iap_send_tx();
device.changed_notifications = 0;
break;
}
/* RetRemoteEventStatus (0x0B)
*
* Sent from the iPod to the device
*/
/* GetiPodStateInfo (0x0C)
*
* Request state information from the iPod
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x0C
* 0x02: Type information
*
* This command requires authentication
*
* Returns:
* RetiPodStateInfo
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x0D
* 0x02: Type information
* 0x03-0xNN: State information
*/
case 0x0C:
{
struct mp3entry* id3;
struct playlist_info* playlist;
int play_status;
struct tm* tm;
CHECKLEN(3);
CHECKAUTH;
IAP_TX_INIT(0x03, 0x0D);
IAP_TX_PUT(buf[0x02]);
switch (buf[0x02])
{
/* 0x00: Track position
* Data length: 4
*/
case 0x00:
{
id3 = audio_current_track();
IAP_TX_PUT_U32(id3->elapsed);
iap_send_tx();
break;
}
/* 0x01: Track index
* Data length: 4
*/
case 0x01:
{
playlist = playlist_get_current();
IAP_TX_PUT_U32(playlist->index - playlist->first_index);
iap_send_tx();
break;
}
/* 0x02: Chapter information
* Data length: 8
*/
case 0x02:
{
playlist = playlist_get_current();
IAP_TX_PUT_U32(playlist->index - playlist->first_index);
/* Indicate that track does not have chapters */
IAP_TX_PUT_U16(0x0000);
IAP_TX_PUT_U16(0xFFFF);
iap_send_tx();
break;
}
/* 0x03: Play status
* Data length: 1
*/
case 0x03:
{
/* TODO: Handle FF/REW
*/
play_status = audio_status();
if (play_status & AUDIO_STATUS_PLAY) {
if (play_status & AUDIO_STATUS_PAUSE) {
IAP_TX_PUT(0x02);
} else {
IAP_TX_PUT(0x01);
}
} else {
IAP_TX_PUT(0x00);
}
iap_send_tx();
break;
}
/* 0x04: Mute/UI/Volume
* Data length: 2
*/
case 0x04:
{
/* Figuring out what the current volume is
* seems to be tricky.
* TODO: Fix.
*/
/* Mute status */
IAP_TX_PUT(0x00);
/* Volume */
IAP_TX_PUT(0x80);
iap_send_tx();
break;
}
/* 0x05: Power/Battery
* Data length: 2
*/
case 0x05:
{
iap_fill_power_state();
iap_send_tx();
break;
}
/* 0x06: Equalizer state
* Data length: 4
*/
case 0x06:
{
/* Currently only one equalizer setting supported, 0 */
IAP_TX_PUT_U32(0x00);
iap_send_tx();
break;
}
/* 0x07: Shuffle
* Data length: 1
*/
case 0x07:
{
IAP_TX_PUT(global_settings.playlist_shuffle?0x01:0x00);
iap_send_tx();
break;
}
/* 0x08: Repeat
* Data length: 1
*/
case 0x08:
{
switch (global_settings.repeat_mode)
{
case REPEAT_OFF:
{
IAP_TX_PUT(0x00);
break;
}
case REPEAT_ONE:
{
IAP_TX_PUT(0x01);
break;
}
case REPEAT_ALL:
{
IAP_TX_PUT(0x02);
break;
}
}
iap_send_tx();
break;
}
/* 0x09: Data/Time
* Data length: 6
*/
case 0x09:
{
tm = get_time();
/* Year */
IAP_TX_PUT_U16(tm->tm_year);
/* Month */
IAP_TX_PUT(tm->tm_mon+1);
/* Day */
IAP_TX_PUT(tm->tm_mday);
/* Hour */
IAP_TX_PUT(tm->tm_hour);
/* Minute */
IAP_TX_PUT(tm->tm_min);
iap_send_tx();
break;
}
/* 0x0A: Alarm
* Data length: 3
*/
case 0x0A:
{
/* Alarm not supported, always off */
IAP_TX_PUT(0x00);
IAP_TX_PUT(0x00);
IAP_TX_PUT(0x00);
iap_send_tx();
break;
}
/* 0x0B: Backlight
* Data length: 1
*/
case 0x0B:
{
/* TOOD: Find out how to do this */
IAP_TX_PUT(0x00);
iap_send_tx();
break;
}
/* 0x0C: Hold switch
* Data length: 1
*/
case 0x0C:
{
IAP_TX_PUT(button_hold()?0x01:0x00);
iap_send_tx();
break;
}
/* 0x0D: Sound check
* Data length: 1
*/
case 0x0D:
{
/* TODO: Find out what the hell this is. Default to off */
IAP_TX_PUT(0x00);
iap_send_tx();
break;
}
/* 0x0E: Audiobook
* Data length: 1
*/
case 0x0E:
{
/* Default to normal */
IAP_TX_PUT(0x00);
iap_send_tx();
break;
}
/* 0x0F: Track position in seconds
* Data length: 2
*/
case 0x0F:
{
unsigned int pos;
id3 = audio_current_track();
pos = id3->elapsed/1000;
IAP_TX_PUT_U16(pos);
iap_send_tx();
break;
}
/* 0x10: Mute/UI/Absolute volume
* Data length: 3
*/
case 0x10:
{
/* TODO: See volume above */
IAP_TX_PUT(0x00);
IAP_TX_PUT(0x80);
IAP_TX_PUT(0x80);
iap_send_tx();
break;
}
default:
{
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
break;
}
}
break;
}
/* RetiPodStateInfo (0x0D)
*
* Sent from the iPod to the device
*/
/* SetiPodStateInfo (0x0E)
*
* Set status information to new values
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x0E
* 0x02: Type of information to change
* 0x03-0xNN: New information
*
* This command requires authentication
*
* Returns on success:
* IAP_ACK_OK
*
* Returns on failure:
* IAP_ACK_CMD_FAILED
* IAP_ACK_BAD_PARAM
*/
case 0x0E:
{
CHECKLEN(3);
CHECKAUTH;
switch (buf[0x02])
{
/* Track position (ms)
* Data length: 4
*/
case 0x00:
{
uint32_t pos;
CHECKLEN(7);
pos = get_u32(&buf[0x03]);
audio_ff_rewind(pos);
cmd_ok(cmd);
break;
}
/* Track index
* Data length: 4
*/
case 0x01:
{
uint32_t index;
CHECKLEN(7);
index = get_u32(&buf[0x03]);
audio_skip(index-iap_get_trackindex());
cmd_ok(cmd);
break;
}
/* Chapter index
* Data length: 2
*/
case 0x02:
{
/* This is not supported */
cmd_ack(cmd, IAP_ACK_CMD_FAILED);
break;
}
/* Play status
* Data length: 1
*/
case 0x03:
{
CHECKLEN(4);
switch(buf[0x03])
{
case 0x00:
{
audio_stop();
cmd_ok(cmd);
break;
}
case 0x01:
{
audio_resume();
cmd_ok(cmd);
break;
}
case 0x02:
{
audio_pause();
cmd_ok(cmd);
break;
}
default:
{
cmd_ack(cmd, IAP_ACK_CMD_FAILED);
break;
}
}
break;
}
/* Volume/Mute
* Data length: 2
* TODO: Fix this
*/
case 0x04:
{
CHECKLEN(5);
cmd_ack(cmd, IAP_ACK_CMD_FAILED);
break;
}
/* Equalizer
* Data length: 5
*/
case 0x06:
{
uint32_t index;
CHECKLEN(8);
index = get_u32(&buf[0x03]);
if (index == 0) {
cmd_ok(cmd);
} else {
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
}
break;
}
/* Shuffle
* Data length: 2
*/
case 0x07:
{
CHECKLEN(5);
switch(buf[0x03])
{
case 0x00:
{
iap_shuffle_state(false);
cmd_ok(cmd);
break;
}
case 0x01:
case 0x02:
{
iap_shuffle_state(true);
cmd_ok(cmd);
break;
}
default:
{
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
break;
}
}
break;
}
/* Repeat
* Data length: 2
*/
case 0x08:
{
CHECKLEN(5);
switch(buf[0x03])
{
case 0x00:
{
iap_repeat_state(REPEAT_OFF);
cmd_ok(cmd);
break;
}
case 0x01:
{
iap_repeat_state(REPEAT_ONE);
cmd_ok(cmd);
break;
}
case 0x02:
{
iap_repeat_state(REPEAT_ALL);
cmd_ok(cmd);
break;
}
default:
{
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
break;
}
}
break;
}
/* Date/Time
* Data length: 6
*/
case 0x09:
{
CHECKLEN(9);
cmd_ack(cmd, IAP_ACK_CMD_FAILED);
break;
}
/* Alarm
* Data length: 4
*/
case 0x0A:
{
CHECKLEN(7);
cmd_ack(cmd, IAP_ACK_CMD_FAILED);
break;
}
/* Backlight
* Data length: 2
*/
case 0x0B:
{
CHECKLEN(5);
cmd_ack(cmd, IAP_ACK_CMD_FAILED);
break;
}
/* Sound check
* Data length: 2
*/
case 0x0D:
{
CHECKLEN(5);
cmd_ack(cmd, IAP_ACK_CMD_FAILED);
break;
}
/* Audio book speed
* Data length: 1
*/
case 0x0E:
{
CHECKLEN(4);
cmd_ack(cmd, IAP_ACK_CMD_FAILED);
break;
}
/* Track position (s)
* Data length: 2
*/
case 0x0F:
{
uint16_t pos;
CHECKLEN(5);
pos = get_u16(&buf[0x03]);
audio_ff_rewind(1000L * pos);
cmd_ok(cmd);
break;
}
/* Volume/Mute/Absolute
* Data length: 4
* TODO: Fix this
*/
case 0x10:
{
CHECKLEN(7);
cmd_ack(cmd, IAP_ACK_CMD_FAILED);
break;
}
default:
{
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
break;
}
}
break;
}
/* GetPlayStatus (0x0F)
*
* Request the current play status information
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x0F
*
* This command requires authentication
*
* Returns:
* RetPlayStatus
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x10
* 0x02: Play state
* 0x03-0x06: Current track index
* 0x07-0x0A: Current track length (ms)
* 0x0B-0x0E: Current track position (ms)
*/
case 0x0F:
{
int play_status;
struct mp3entry* id3;
struct playlist_info* playlist;
CHECKAUTH;
IAP_TX_INIT(0x03, 0x10);
play_status = audio_status();
if (play_status & AUDIO_STATUS_PLAY) {
/* Playing or paused */
if (play_status & AUDIO_STATUS_PAUSE) {
/* Paused */
IAP_TX_PUT(0x02);
} else {
/* Playing */
IAP_TX_PUT(0x01);
}
playlist = playlist_get_current();
IAP_TX_PUT_U32(playlist->index - playlist->first_index);
id3 = audio_current_track();
IAP_TX_PUT_U32(id3->length);
IAP_TX_PUT_U32(id3->elapsed);
} else {
/* Stopped, all values are 0x00 */
IAP_TX_PUT(0x00);
IAP_TX_PUT_U32(0x00);
IAP_TX_PUT_U32(0x00);
IAP_TX_PUT_U32(0x00);
}
iap_send_tx();
break;
}
/* RetPlayStatus (0x10)
*
* Sent from the iPod to the device
*/
/* SetCurrentPlayingTrack (0x11)
*
* Set the current playing track
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x11
* 0x02-0x05: Index of track to play
*
* This command requires authentication
*
* Returns on success:
* IAP_ACK_OK
*
* Returns on failure:
* IAP_ACK_BAD_PARAM
*/
case 0x11:
{
uint32_t index;
uint32_t trackcount;
CHECKAUTH;
CHECKLEN(6);
index = get_u32(&buf[0x02]);
trackcount = playlist_amount();
if (index >= trackcount)
{
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
break;
}
audio_skip(index-iap_get_trackindex());
cmd_ok(cmd);
break;
}
/* GetIndexedPlayingTrackInfo (0x12)
*
* Request information about a given track
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x12
* 0x02: Type of information to retrieve
* 0x03-0x06: Track index
* 0x07-0x08: Chapter index
*
* This command requires authentication.
*
* Returns:
* RetIndexedPlayingTrackInfo
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x13
* 0x02: Type of information returned
* 0x03-0xNN: Information
*/
case 0x12:
{
/* NOTE:
*
* Retrieving the track information from a track which is not
* the currently playing track can take a seriously long time,
* in the order of several seconds.
*
* This most certainly violates the IAP spec, but there's no way
* around this for now.
*/
uint32_t track_index;
struct playlist_track_info track;
struct mp3entry id3;
CHECKLEN(0x09);
CHECKAUTH;
track_index = get_u32(&buf[0x03]);
if (-1 == playlist_get_track_info(NULL, track_index, &track)) {
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
break;
}
IAP_TX_INIT(0x03, 0x13);
IAP_TX_PUT(buf[2]);
switch (buf[2])
{
/* 0x00: Track caps/info
* Information length: 10 bytes
*/
case 0x00:
{
iap_get_trackinfo(track_index, &id3);
/* Track capabilities. None of these are supported, yet */
IAP_TX_PUT_U32(0x00);
/* Track length in ms */
IAP_TX_PUT_U32(id3.length);
/* Chapter count, stays at 0 */
IAP_TX_PUT_U16(0x00);
iap_send_tx();
break;
}
/* 0x01: Chapter time/name
* Information length: 4+variable
*/
case 0x01:
{
/* Chapter length, set at 0 (no chapters) */
IAP_TX_PUT_U32(0x00);
/* Chapter name, empty */
IAP_TX_PUT_STRING("");
iap_send_tx();
break;
}
/* 0x02, Artist name
* Information length: variable
*/
case 0x02:
{
/* Artist name */
iap_get_trackinfo(track_index, &id3);
IAP_TX_PUT_STRLCPY(id3.artist);
iap_send_tx();
break;
}
/* 0x03, Album name
* Information length: variable
*/
case 0x03:
{
/* Album name */
iap_get_trackinfo(track_index, &id3);
IAP_TX_PUT_STRLCPY(id3.album);
iap_send_tx();
break;
}
/* 0x04, Genre name
* Information length: variable
*/
case 0x04:
{
/* Genre name */
iap_get_trackinfo(track_index, &id3);
IAP_TX_PUT_STRLCPY(id3.genre_string);
iap_send_tx();
break;
}
/* 0x05, Track title
* Information length: variable
*/
case 0x05:
{
/* Track title */
iap_get_trackinfo(track_index, &id3);
IAP_TX_PUT_STRLCPY(id3.title);
iap_send_tx();
break;
}
/* 0x06, Composer name
* Information length: variable
*/
case 0x06:
{
/* Track Composer */
iap_get_trackinfo(track_index, &id3);
IAP_TX_PUT_STRLCPY(id3.composer);
iap_send_tx();
break;
}
/* 0x07, Lyrics
* Information length: variable
*/
case 0x07:
{
/* Packet information bits. All 0 (single packet) */
IAP_TX_PUT(0x00);
/* Packet index */
IAP_TX_PUT_U16(0x00);
/* Lyrics */
IAP_TX_PUT_STRING("");
iap_send_tx();
break;
}
/* 0x08, Artwork count
* Information length: variable
*/
case 0x08:
{
/* No artwork, return packet containing just the type byte */
iap_send_tx();
break;
}
default:
{
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
break;
}
}
break;
}
/* RetIndexedPlayingTrackInfo (0x13)
*
* Sent from the iPod to the device
*/
/* GetNumPlayingTracks (0x14)
*
* Request the number of tracks in the current playlist
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x14
*
* This command requires authentication.
*
* Returns:
* RetNumPlayingTracks
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x15
* 0x02-0xNN: Number of tracks
*/
case 0x14:
{
CHECKAUTH;
IAP_TX_INIT(0x03, 0x15);
IAP_TX_PUT_U32(playlist_amount());
iap_send_tx();
}
/* RetNumPlayingTracks (0x15)
*
* Sent from the iPod to the device
*/
/* GetArtworkFormats (0x16)
*
* Request a list of supported artwork formats
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x16
*
* This command requires authentication.
*
* Returns:
* RetArtworkFormats
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x17
* 0x02-0xNN: list of 7 byte format descriptors
*/
case 0x16:
{
CHECKAUTH;
/* We return the empty list, meaning no artwork
* TODO: Fix to return actual artwork formats
*/
IAP_TX_INIT(0x03, 0x17);
iap_send_tx();
break;
}
/* RetArtworkFormats (0x17)
*
* Sent from the iPod to the device
*/
/* GetTrackArtworkData (0x18)
*
* Request artwork for the given track
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x18
* 0x02-0x05: Track index
* 0x06-0x07: Format ID
* 0x08-0x0B: Track offset in ms
*
* This command requires authentication.
*
* Returns:
* RetTrackArtworkData
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x19
* 0x02-0x03: Descriptor index
* 0x04: Pixel format code
* 0x05-0x06: Image width in pixels
* 0x07-0x08: Image height in pixels
* 0x09-0x0A: Inset rectangle, top left x
* 0x0B-0x0C: Inset rectangle, top left y
* 0x0D-0x0E: Inset rectangle, bottom right x
* 0x0F-0x10: Inset rectangle, bottom right y
* 0x11-0x14: Row size in bytes
* 0x15-0xNN: Image data
*
* If the image data does not fit in a single packet, subsequent
* packets omit bytes 0x04-0x14.
*/
case 0x18:
{
CHECKAUTH;
CHECKLEN(0x0C);
/* No artwork support currently */
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
break;
}
/* RetTrackArtworkFormat (0x19)
*
* Sent from the iPod to the device
*/
/* GetPowerBatteryState (0x1A)
*
* Request the current power state
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x1A
*
* This command requires authentication.
*
* Returns:
* RetPowerBatteryState
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x1B
* 0x02: Power state
* 0x03: Battery state
*/
case 0x1A:
{
IAP_TX_INIT(0x03, 0x1B);
iap_fill_power_state();
iap_send_tx();
break;
}
/* RetPowerBatteryState (0x1B)
*
* Sent from the iPod to the device
*/
/* GetSoundCheckState (0x1C)
*
* Request the current sound check state
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x1C
*
* This command requires authentication.
*
* Returns:
* RetSoundCheckState
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x1D
* 0x02: Sound check state
*/
case 0x1C:
{
CHECKAUTH;
IAP_TX_INIT(0x03, 0x1D);
IAP_TX_PUT(0x00); /* Always off */
iap_send_tx();
break;
}
/* RetSoundCheckState (0x1D)
*
* Sent from the iPod to the device
*/
/* SetSoundCheckState (0x1E)
*
* Set the sound check state
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x1E
* 0x02: Sound check state
* 0x03: Restore on exit
*
* This command requires authentication.
*
* Returns on success
* IAP_ACK_OK
*
* Returns on failure
* IAP_ACK_CMD_FAILED
*/
case 0x1E:
{
CHECKAUTH;
CHECKLEN(4);
/* Sound check is not supported right now
* TODO: Fix
*/
cmd_ack(cmd, IAP_ACK_CMD_FAILED);
break;
}
/* GetTrackArtworkTimes (0x1F)
*
* Request a list of timestamps at which artwork exists in a track
*
* Packet format (offset in buf[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x1F
* 0x02-0x05: Track index
* 0x06-0x07: Format ID
* 0x08-0x09: Artwork Index
* 0x0A-0x0B: Artwork count
*
* This command requires authentication.
*
* Returns:
* RetTrackArtworkTimes
*
* Packet format (offset in data[]: Description)
* 0x00: Lingo ID: Display Remote Lingo, always 0x03
* 0x01: Command, always 0x20
* 0x02-0x05: Offset in ms
*
* Bytes 0x02-0x05 can be repeated multiple times
*/
case 0x1F:
{
uint32_t index;
uint32_t trackcount;
CHECKAUTH;
CHECKLEN(0x0C);
/* Artwork is currently unsuported, just check for a valid
* track index
*/
index = get_u32(&buf[0x02]);
trackcount = playlist_amount();
if (index >= trackcount)
{
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
break;
}
/* Send an empty list */
IAP_TX_INIT(0x03, 0x20);
iap_send_tx();
break;
}
/* The default response is IAP_ACK_BAD_PARAM */
default:
{
#ifdef LOGF_ENABLE
logf("iap: Unsupported Mode03 Command");
#else
cmd_ack(cmd, IAP_ACK_BAD_PARAM);
#endif
break;
}
}
}