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mechanism for updating metadata while decoding

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vorbis comments are updated on the fly for streams
need to decode icy metadata
buffering of metadata needs to be hardened, to ensure that player has already read a particular metachunk or passed over it

git-svn-id: https://svn.musicpd.org/mpd/trunk@1358 09075e82-0dd4-0310-85a5-a0d7c8717e4f
This commit is contained in:
Warren Dukes 2004-06-06 19:41:03 +00:00
parent 4e53282469
commit b29f73c819
13 changed files with 143 additions and 134 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/Makefile.am
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@ -13,7 +13,7 @@ mpd_headers = buffer2array.h interface.h command.h playlist.h ls.h \
charConv.h permission.h mpd_types.h pcm_utils.h \
signal_check.h utf8.h inputStream.h \
outputBuffer.h replayGain.h inputStream_file.h inputStream_http.h \
inputPlugin.h
inputPlugin.h metadataChunk.h
mpd_SOURCES = main.c buffer2array.c interface.c command.c playlist.c ls.c \
song.c list.c directory.c tables.c utils.c path.c \
tag.c player.c listen.c conf.c volume.c \
@ -21,7 +21,7 @@ mpd_SOURCES = main.c buffer2array.c interface.c command.c playlist.c ls.c \
charConv.c permission.c pcm_utils.c \
signal_check.c utf8.c inputStream.c outputBuffer.c \
replayGain.c inputStream_file.c inputStream_http.c inputPlugin.c \
$(mpd_headers) $(mpd_inputPlugins)
metadataChunk.c $(mpd_headers) $(mpd_inputPlugins)
mpd_CFLAGS = $(MPD_CFLAGS)
mpd_LDADD = $(MPD_LIBS) $(ID3_LIB) $(MAD_LIB) $(MP4FF_LIB)

88
src/decode.c
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@ -260,12 +260,7 @@ void decodeStart(PlayerControl * pc, OutputBuffer * cb, DecoderControl * dc) {
return;
}
cb->metadataSet = 0;
memset(cb->metadata, 0, DECODE_METADATA_LENGTH);
cb->name = -1;
cb->title = -1;
cb->album = -1;
cb->artist = -1;
copyMpdTagToOutputBuffer(cb, NULL);
strncpy(dc->utf8url, pc->utf8url, MAXPATHLEN);
dc->utf8url[MAXPATHLEN] = '\0';
@ -292,13 +287,14 @@ void decodeStart(PlayerControl * pc, OutputBuffer * cb, DecoderControl * dc) {
return;
}
/*if(inStream.metaTitle) {
strncpy(cb->metadata, inStream.metaTitle,
DECODE_METADATA_LENGTH-1);
cb->name = 0;
cb->metaChunk = cb->end;
cb->metadataSet = 1;
}*/
if(inStream.metaTitle) {
MpdTag * tag = newMpdTag();
tag->name = strdup(inStream.metaTitle);
copyMpdTagToOutputBuffer(cb, tag);
freeMpdTag(tag);
}
/* reset Metadata in OutputBuffer */
ret = DECODE_ERROR_UNKTYPE;
if(isRemoteUrl(dc->utf8url)) {
@ -403,42 +399,25 @@ int decoderInit(PlayerControl * pc, OutputBuffer * cb, DecoderControl * dc) {
kill(getppid(), SIGUSR1); \
}
/* do some fancier shit here, like put metadata in a linked list metadata
buffer, and assign it to current and whether current is written */
#define handleMetadata() { \
if(cb->metadataSet) {\
gotMetadata = 1;\
memcpy(metadata, cb->metadata, DECODE_METADATA_LENGTH); \
artist = cb->artist; \
name = cb->name; \
title = cb->title; \
album = cb->album; \
metaChunk = cb->metaChunk; \
cb->metadataSet = 0; \
} \
if(gotMetadata) { \
int end = cb->end; \
if(end > cb->begin && (metaChunk < cb->begin || \
metaChunk > end)) \
{ \
gotMetadata = 0; \
} \
else if(cb->begin > end && (metaChunk > cb->begin && \
metaChunk < end)) \
{ \
gotMetadata = 0; \
} \
else if(pc->metadataState == PLAYER_METADATA_STATE_WRITE) { \
if(end > metaChunk && metaChunk <= cb->begin ) { \
copyMetadata(); \
} \
else if(metaChunk >= end && (cb->begin >= metaChunk || \
cb->begin < end)) \
{ \
copyMetadata(); \
} \
} \
} \
void handleMetadata(OutputBuffer * cb, PlayerControl * pc) {
static int previous = -1;
if(cb->begin!=cb->end || cb->wrap) {
int meta = cb->metaChunk[cb->begin];
if( meta != previous ) {
if( meta >= 0 && pc->metadataState ==
PLAYER_METADATA_STATE_WRITE)
{
printf("METADATA!, copying it.\n");
memcpy(&(pc->metadataChunk),
cb->metadataChunks+meta,
sizeof(MetadataChunk));
pc->metadataState =
PLAYER_METADATA_STATE_READ;
previous = meta;
}
}
}
}
void decodeParent(PlayerControl * pc, DecoderControl * dc, OutputBuffer * cb) {
@ -453,13 +432,6 @@ void decodeParent(PlayerControl * pc, DecoderControl * dc, OutputBuffer * cb) {
int decodeWaitedOn = 0;
char silence[CHUNK_SIZE];
double sizeToTime = 0.0;
char metadata[DECODE_METADATA_LENGTH];
mpd_sint16 name = -1;
mpd_sint16 title = -1;
mpd_sint16 artist = -1;
mpd_sint16 album = -1;
mpd_sint16 metaChunk = -1;
int gotMetadata = 0;
memset(silence,0,CHUNK_SIZE);
@ -473,15 +445,14 @@ void decodeParent(PlayerControl * pc, DecoderControl * dc, OutputBuffer * cb) {
dc->state!=DECODE_STATE_STOP)
{
processDecodeInput();
handleMetadata();
if(quit) return;
my_usleep(10000);
}
while(!quit) {
processDecodeInput();
handleMetadata();
handleDecodeStart();
handleMetadata(cb, pc);
if(dc->state==DECODE_STATE_STOP &&
pc->queueState==PLAYER_QUEUE_FULL &&
pc->queueLockState==PLAYER_QUEUE_UNLOCKED)
@ -643,7 +614,6 @@ void decode() {
cb->begin = 0;
cb->end = 0;
cb->wrap = 0;
cb->metadataSet = 0;
pc = &(getPlayerData()->playerControl);
dc = &(getPlayerData()->decoderControl);
dc->error = 0;

2
src/decode.h
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@ -46,8 +46,6 @@
#define DECODE_SUFFIX_MP4 5
#define DECODE_SUFFIX_WAVE 6
#define DECODE_METADATA_LENGTH 8192
typedef struct _DecoderControl {
volatile mpd_sint8 state;
volatile mpd_sint8 stop;

46
src/metadataChunk.c Normal file
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@ -0,0 +1,46 @@
#include "metadataChunk.h"
#include <string.h>
void initMetadataChunk(MetadataChunk * chunk) {
memset(chunk, 0, sizeof(MetadataChunk));
chunk->name = -1;
chunk->artist = -1;
chunk->album = -1;
chunk->title = -1;
}
MpdTag * metadataChunkToMpdTagDup(MetadataChunk * chunk) {
MpdTag * ret = newMpdTag();
if(chunk->name >= 0) ret->name = strdup(chunk->buffer+chunk->name);
if(chunk->artist >= 0) ret->artist = strdup(chunk->buffer+chunk->artist);
if(chunk->album >= 0) ret->album = strdup(chunk->buffer+chunk->album);
if(chunk->title >= 0) ret->title = strdup(chunk->buffer+chunk->title);
return ret;
}
#define copyStringToChunk(string, element) { \
if(string && (slen = strlen(string)) && \
pos < METADATA_BUFFER_LENGTH-1) \
{ \
strncpy(chunk->buffer+pos, string, \
METADATA_BUFFER_LENGTH-1-pos); \
element = pos; \
pos += slen+1; \
} \
}
void copyMpdTagToMetadataChunk(MpdTag * tag, MetadataChunk * chunk) {
int pos = 0;
int slen;
initMetadataChunk(chunk);
copyStringToChunk(tag->name, chunk->name);
copyStringToChunk(tag->title, chunk->title);
copyStringToChunk(tag->artist, chunk->artist);
copyStringToChunk(tag->album, chunk->album);
}

22
src/metadataChunk.h Normal file
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@ -0,0 +1,22 @@
#ifndef METADATA_CHUNK_H
#define METADATA_CHUNK_H
#define METADATA_BUFFER_LENGTH 1024
#include "tag.h"
typedef struct _MetadataChunk {
int name;
int title;
int artist;
int album;
char buffer[METADATA_BUFFER_LENGTH];
} MetadataChunk;
void initMetadataChunk(MetadataChunk *);
MpdTag * metadataChunkToMpdTagDup(MetadataChunk * chunk);
void copyMpdTagToMetadataChunk(MpdTag * tag, MetadataChunk * chunk);
#endif

48
src/outputBuffer.c
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@ -26,6 +26,9 @@
static mpd_sint16 currentChunk = -1;
static mpd_sint8 currentMetaChunk = -1;
static mpd_sint8 sendMetaChunk = 0;
void clearOutputBuffer(OutputBuffer * cb) {
currentChunk = -1;
cb->end = cb->begin;
@ -95,6 +98,13 @@ int sendDataToOutputBuffer(OutputBuffer * cb, InputStream * inStream,
currentChunk = cb->end;
cb->chunkSize[currentChunk] = 0;
if(sendMetaChunk) {
cb->metaChunk[currentChunk] = currentMetaChunk;
}
else cb->metaChunk[currentChunk] = -1;
cb->bitRate[currentChunk] = bitRate;
cb->times[currentChunk] = time;
}
chunkLeft = CHUNK_SIZE-cb->chunkSize[currentChunk];
@ -104,9 +114,6 @@ int sendDataToOutputBuffer(OutputBuffer * cb, InputStream * inStream,
cb->chunkSize[currentChunk],
data, dataToSend);
cb->chunkSize[currentChunk]+= dataToSend;
cb->bitRate[currentChunk] = bitRate;
cb->times[currentChunk] = time;
datalen-= dataToSend;
data+= dataToSend;
@ -118,32 +125,19 @@ int sendDataToOutputBuffer(OutputBuffer * cb, InputStream * inStream,
return 0;
}
/* this is stuff for inputPlugins to use! */
#define copyStringToMetadata(string, element) { \
if(string && (slen = strlen(string)) && \
pos < DECODE_METADATA_LENGTH-1) \
{ \
strncpy(cb->metadata+pos, string, \
DECODE_METADATA_LENGTH-1-pos); \
element = pos; \
pos += slen+1; \
} \
}
void copyMpdTagToOutputBuffer(OutputBuffer * cb, MpdTag * tag) {
int pos = 0;
int slen;
printf("copyMpdTagToOB called\n");
if(!cb->acceptMetadata) return;
if(!tag) return;
if(!cb->acceptMetadata || !tag) {
sendMetaChunk = 0;
return;
}
memset(cb->metadata, 0, DECODE_METADATA_LENGTH);
copyStringToMetadata(tag->name, cb->name);
copyStringToMetadata(tag->artist, cb->artist);
copyStringToMetadata(tag->title, cb->title);
copyStringToMetadata(tag->album, cb->album);
sendMetaChunk = 1;
currentMetaChunk++;
if(currentMetaChunk >= BUFFERED_METACHUNKS) currentMetaChunk = 0;
cb->metaChunk = cb->end;
cb->metadataSet = 1;
printMpdTag(stdout, tag);
copyMpdTagToMetadataChunk(tag, &(cb->metadataChunks[currentMetaChunk]));
}

12
src/outputBuffer.h
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@ -23,10 +23,13 @@
#include "decode.h"
#include "audio.h"
#include "inputStream.h"
#include "metadataChunk.h"
#define OUTPUT_BUFFER_DC_STOP -1
#define OUTPUT_BUFFER_DC_SEEK -2
#define BUFFERED_METACHUNKS 25
typedef struct _OutputBuffer {
char * volatile chunks;
mpd_uint16 * volatile chunkSize;
@ -37,13 +40,8 @@ typedef struct _OutputBuffer {
mpd_sint16 volatile next;
mpd_sint8 volatile wrap;
AudioFormat audioFormat;
volatile mpd_sint8 metadataSet;
char metadata[DECODE_METADATA_LENGTH];
volatile mpd_sint16 title;
volatile mpd_sint16 artist;
volatile mpd_sint16 album;
volatile mpd_sint16 name;
volatile mpd_uint16 metaChunk;
MetadataChunk metadataChunks[BUFFERED_METACHUNKS];
mpd_sint8 * volatile metaChunk;
volatile mpd_sint8 acceptMetadata;
} OutputBuffer;

26
src/player.c
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@ -55,9 +55,6 @@ static void resetPlayerMetadata() {
if(pc->metadataState == PLAYER_METADATA_STATE_READ) {
pc->metadataState = PLAYER_METADATA_STATE_WRITE;
pc->title = -1;
pc->artist = -1;
pc->album = -1;
}
}
@ -75,8 +72,6 @@ void resetPlayer() {
getPlayerData()->playerControl.seek = 0;
getPlayerData()->playerControl.metadataState =
PLAYER_METADATA_STATE_WRITE;
getPlayerData()->playerControl.title = -1;
/* kill decode process if it got left running */
pid = getPlayerData()->playerControl.decode_pid;
if(pid>0) kill(pid,SIGTERM);
getPlayerData()->playerControl.decode_pid = 0;
@ -474,31 +469,24 @@ void playerCycleLogFiles() {
/* this actually creates a dupe of the current metadata */
Song * playerCurrentDecodeSong() {
static Song * song = NULL;
static char * prev = NULL;
static MetadataChunk * prev = NULL;
PlayerControl * pc = &(getPlayerData()->playerControl);
if(pc->metadataState == PLAYER_METADATA_STATE_READ &&
((!song || strcmp(song->utf8url, pc->currentUrl))
|| (!prev || strcmp(prev,pc->metadata))))
|| (!prev || memcmp(prev, &(pc->metadataChunk),
sizeof(MetadataChunk)))))
{
printf("metadata in the PLAYER!\n");
if(song) freeJustSong(song);
song = newNullSong();
song->tag = newMpdTag();
if(song->utf8url) free(song->utf8url);
song->utf8url = strdup(pc->currentUrl);
if(pc->title >= 0) {
song->tag->title = strdup(pc->title + pc->metadata);
/*printf("player title: %s\n", song->tag->title);*/
}
if(pc->artist >= 0) {
song->tag->artist = strdup(pc->artist + pc->metadata);
}
if(pc->album >= 0) {
song->tag->album = strdup(pc->album + pc->metadata);
}
song->tag = metadataChunkToMpdTagDup(&(pc->metadataChunk));
validateUtf8Tag(song->tag);
if(prev) free(prev);
prev = strdup(pc->metadata);
prev = malloc(sizeof(MetadataChunk));
memcpy(prev, &(pc->metadataChunk), sizeof(MetadataChunk));
resetPlayerMetadata();
return song;
}

7
src/player.h
View File

@ -24,6 +24,7 @@
#include "decode.h"
#include "mpd_types.h"
#include "song.h"
#include "metadataChunk.h"
#include <stdio.h>
#include <sys/param.h>
@ -84,11 +85,7 @@ typedef struct _PlayerControl {
volatile int decode_pid;
volatile mpd_sint8 cycleLogFiles;
volatile mpd_sint8 metadataState;
char metadata[DECODE_METADATA_LENGTH];
volatile mpd_sint16 name;
volatile mpd_sint16 title;
volatile mpd_sint16 artist;
volatile mpd_sint16 album;
MetadataChunk metadataChunk;
} PlayerControl;
void clearPlayerPid();

15
src/playerData.c
View File

@ -73,6 +73,7 @@ void initPlayerData() {
allocationSize+= buffered_chunks*sizeof(float); /*for times*/
allocationSize+= buffered_chunks*sizeof(mpd_sint16); /*for chunkSize*/
allocationSize+= buffered_chunks*sizeof(mpd_sint16); /*for bitRate*/
allocationSize+= buffered_chunks*sizeof(mpd_sint8); /*for metaChunk*/
allocationSize+= sizeof(PlayerData); /*for playerData struct*/
if((shmid = shmget(IPC_PRIVATE,allocationSize,IPC_CREAT|0600))<0) {
@ -95,8 +96,10 @@ void initPlayerData() {
buffered_chunks*CHUNK_SIZE);
buffer->bitRate = (mpd_uint16 *)(((char *)buffer->chunkSize)+
buffered_chunks*sizeof(mpd_sint16));
buffer->times = (float *)(((char *)buffer->bitRate)+
buffer->metaChunk = (mpd_sint8 *)(((char *)buffer->bitRate)+
buffered_chunks*sizeof(mpd_sint16));
buffer->times = (float *)(((char *)buffer->metaChunk)+
buffered_chunks*sizeof(mpd_sint8));
playerData_pd->playerControl.stop = 0;
playerData_pd->playerControl.pause = 0;
@ -111,16 +114,10 @@ void initPlayerData() {
memset(playerData_pd->playerControl.utf8url, 0, MAXPATHLEN+1);
memset(playerData_pd->playerControl.erroredUrl, 0, MAXPATHLEN+1);
memset(playerData_pd->playerControl.currentUrl, 0, MAXPATHLEN+1);
memset(playerData_pd->playerControl.metadata, 0,
DECODE_METADATA_LENGTH);
playerData_pd->playerControl.crossFade = crossfade;
playerData_pd->playerControl.softwareVolume = 1000;
playerData_pd->playerControl.totalPlayTime = 0;
playerData_pd->playerControl.decode_pid = 0;
playerData_pd->playerControl.name = -1;
playerData_pd->playerControl.title = -1;
playerData_pd->playerControl.artist = -1;
playerData_pd->playerControl.album = -1;
playerData_pd->playerControl.metadataState =
PLAYER_METADATA_STATE_WRITE;
@ -130,9 +127,6 @@ void initPlayerData() {
playerData_pd->decoderControl.seek = 0;
playerData_pd->decoderControl.error = DECODE_ERROR_NOERROR;
memset(playerData_pd->decoderControl.utf8url, 0, MAXPATHLEN+1);
memset(playerData_pd->buffer.metadata, 0, DECODE_METADATA_LENGTH);
playerData_pd->buffer.metadataSet = 0;
}
PlayerData * getPlayerData() {
@ -142,4 +136,3 @@ PlayerData * getPlayerData() {
void freePlayerData() {
shmdt(playerData_pd);
}
/* vim:set shiftwidth=4 tabstop=8 expandtab: */

4
src/playlist.c
View File

@ -802,15 +802,19 @@ void syncCurrentPlayerDecodeMetadata() {
songNum = playlist.order[playlist.current];
song = playlist.songs[songNum];
printf("HERE 1\n");
if(song->type == SONG_TYPE_URL &&
0 == strcmp(song->utf8url, songPlayer->utf8url) &&
!mpdTagsAreEqual(song->tag, songPlayer->tag))
{
printf("HERE 1-1\n");
if(song->tag) freeMpdTag(song->tag);
song->tag = mpdTagDup(songPlayer->tag);
playlist.songMod[songNum] = playlist.version;
incrPlaylistVersion();
}
printf("HERE 2\n");
}
void syncPlayerAndPlaylist() {

2
src/tag.c
View File

@ -169,7 +169,7 @@ void clearMpdTag(MpdTag * tag) {
if(tag->artist) free(tag->artist);
if(tag->album) free(tag->album);
if(tag->title) free(tag->title);
if(tag->name) free(tag->title);
if(tag->name) free(tag->name);
if(tag->track) free(tag->track);
}

1
src/tag.h
View File

@ -60,4 +60,3 @@ void validateUtf8Tag(MpdTag * tag);
int mpdTagsAreEqual(MpdTag * tag1, MpdTag * tag2);
#endif
/* vim:set shiftwidth=4 tabstop=8 expandtab: */