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* yet more unsigned integersMax Kellermann2008-04-121-4/+4
| | | | | | | | | | calculateCrossFadeChunks() still returns int, although the caller uses it as an unsigned value. Since the function body checks for negative values, it is safe to cast to unsigned. crossFade() takes signed parameters, although it callers pass unsigned integers. Change declaration to unsigned. git-svn-id: https://svn.musicpd.org/mpd/trunk@7291 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* constant pointersMax Kellermann2008-04-123-9/+9
| | | | | | There were some const pointers missing in the previous const-cleanup patch. git-svn-id: https://svn.musicpd.org/mpd/trunk@7290 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* fix parameter types in the faad callsMax Kellermann2008-04-122-3/+3
| | | | | | libfaad wants uint32_t pointers. Passing a long pointer is bugged on amd64. git-svn-id: https://svn.musicpd.org/mpd/trunk@7289 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* fix compilation error in wavpack pluginMax Kellermann2008-04-121-3/+6
| | | | | | The patch "Start using song pointers in core data structures" removed dc->utf8url, and the adaption for wavpack_plugin.c was missing. git-svn-id: https://svn.musicpd.org/mpd/trunk@7288 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* yet more unsigned integersMax Kellermann2008-04-125-10/+9
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7287 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* whitespace cleanupMax Kellermann2008-04-121-67/+67
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7286 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* added inline function successor()Max Kellermann2008-04-121-11/+12
| | | | | | The new function successor() can be used to simplify a lot of code lines and saves a lot of "i+>=buffered_chunks" checks. git-svn-id: https://svn.musicpd.org/mpd/trunk@7285 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* moved currentChunk into OutputBufferMax Kellermann2008-04-122-10/+11
| | | | | | | | currentChunk is a global variable, which renders the whole output buffer code non-reentrant. Although this is not a real problem since there is only one global output buffer currently, we should move it to the OutputBuffer struct. git-svn-id: https://svn.musicpd.org/mpd/trunk@7284 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* use the notify API in the main threadMax Kellermann2008-04-123-9/+19
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7283 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* use the notify API in the playerMax Kellermann2008-04-123-6/+10
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7282 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* use the notify API in the decoderMax Kellermann2008-04-123-6/+12
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7281 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* use the pthread API in notify.cMax Kellermann2008-04-122-33/+66
| | | | | | | This patch rewrites notify.c to use the pthread API, namely pthread_mutex and pthread_cond. This is a lot cheaper and easier than the pipe() hack. git-svn-id: https://svn.musicpd.org/mpd/trunk@7280 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* rename the notify.c methodsMax Kellermann2008-04-122-6/+6
| | | | | Use "notify" as a prefix rather than suffix. git-svn-id: https://svn.musicpd.org/mpd/trunk@7279 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* use break instead of quitDecode()+returnMax Kellermann2008-04-121-6/+3
| | | | | | | | The code paths which return from the functions all have to call quitDecode(). If we simply break instead of calling quitDecode() explicitly, this function gets called in the last line of this function anyway. git-svn-id: https://svn.musicpd.org/mpd/trunk@7278 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* moved expression to audioFormatSizeToTime()Max Kellermann2008-04-122-3/+6
| | | | | | | The multi-line expression which calculates sizeToTime is hard to read, partly because "cb->audioFormat." is too long. Create a separate inline function in audio.h for that. git-svn-id: https://svn.musicpd.org/mpd/trunk@7277 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* let calculateCrossFadeChunks() decideMax Kellermann2008-04-121-14/+12
| | | | | | | Moved the decision whether to cross-fade the current song to calculateCrossFadeChunks(). This simplifies the function decoderParent() and eliminates one layer of indentation. git-svn-id: https://svn.musicpd.org/mpd/trunk@7276 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* moved code to playChunk()Max Kellermann2008-04-121-10/+20
| | | | | | Similar to the crossFade() patch: pass chunk objects to playChunk(), simplify decodeParent() by removing clutter. git-svn-id: https://svn.musicpd.org/mpd/trunk@7275 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* added outputBufferShift()Max Kellermann2008-04-123-4/+13
| | | | | Hiding OutputBuffer internals, yet again. Two more assertions. git-svn-id: https://svn.musicpd.org/mpd/trunk@7274 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* continue main loop instead of nesting loopsMax Kellermann2008-04-121-13/+5
| | | | | | | To unify the decoderParent() main loop some more, use it to wait for the decoder to change the song. Only one single processDecodeInput() caller left after this patch. git-svn-id: https://svn.musicpd.org/mpd/trunk@7273 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* sleep when waiting for cross-fade chunksMax Kellermann2008-04-121-1/+3
| | | | | | | When there are not enough decode cross-fade chunks in the buffer yet, the current code does busy-wait, which will delay the decoder even more. sleep instead, expecting the decoder to wake us up. git-svn-id: https://svn.musicpd.org/mpd/trunk@7272 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* moved code to crossFade()Max Kellermann2008-04-121-15/+20
| | | | | | | Calling crossFade() with the chunk objects is easier than unrolling all the chunk properties manually, and decodeParent() can really use more of these simplifications. git-svn-id: https://svn.musicpd.org/mpd/trunk@7271 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* use sizeof(chunk.data) instead of CHUNK_SIZEMax Kellermann2008-04-121-2/+2
| | | | | | sizeof() is the more "natural" or "direct" access to the buffer size, instead of a macro happening to be used to the buffer declaration. git-svn-id: https://svn.musicpd.org/mpd/trunk@7270 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* added struct OutputBufferChunkMax Kellermann2008-04-124-41/+46
| | | | | | To make access to OutputBuffer easier, move everything which belongs to a chunk into its own structure, namely OutputBufferChunk. git-svn-id: https://svn.musicpd.org/mpd/trunk@7269 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* moved CHUNK_SIZE to outputBuffer.hMax Kellermann2008-04-122-3/+3
| | | | | | The chunk size should be in outputBuffer.h since the output buffer code is its primary user. git-svn-id: https://svn.musicpd.org/mpd/trunk@7268 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* added outputBufferChunkData()Max Kellermann2008-04-123-4/+11
| | | | | | Hiding OutputBuffer internals, again. We get an extra assertion in return. git-svn-id: https://svn.musicpd.org/mpd/trunk@7267 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* removed "quit"Max Kellermann2008-04-121-5/+3
| | | | | | The variable "quit" can be removed, since its only setter can use "break" instead, just like the other code paths. git-svn-id: https://svn.musicpd.org/mpd/trunk@7266 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* do not reset nextChunkMax Kellermann2008-04-121-9/+5
| | | | | | | The variables "nextChunk" and "crossFadeChunks" are only used when doCrossFade==1. This means that we do not have to reset these as long as doCrossFade!=1. git-svn-id: https://svn.musicpd.org/mpd/trunk@7265 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* added outputBufferRelative()Max Kellermann2008-04-123-10/+17
| | | | | | | The cross-fade check is still very complicated whenever it uses OutputBuffer internals. Greatly simplify another check by introducing outputBufferRelative(). git-svn-id: https://svn.musicpd.org/mpd/trunk@7264 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* added outputBufferEmpty()Max Kellermann2008-04-123-2/+10
| | | | | | | Another "don't use OutputBuffer internals" patch. This ignores the copied "end" value, but I do not think that has ever been a real issue. git-svn-id: https://svn.musicpd.org/mpd/trunk@7263 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* moved check to outputBufferAbsolute()Max Kellermann2008-04-123-17/+27
| | | | | | | decoderParent() uses a lot of OutputBuffer internals to see whether cross-fading should be started. Move these checks to outputBuffer.c, which also simplifies decoderParent(). git-svn-id: https://svn.musicpd.org/mpd/trunk@7262 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* make variables more localMax Kellermann2008-04-121-4/+3
| | | | | | | Declare the variables "test" and "fadePosition" in the scope where they are really used. This removes some of the clutter in the function decodeParent(). git-svn-id: https://svn.musicpd.org/mpd/trunk@7261 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* moved the initial buffering code into the big loopMax Kellermann2008-04-121-13/+10
| | | | | | Eliminating some duplicated and. This also decreases the number of lines calling processDecodeInput(). git-svn-id: https://svn.musicpd.org/mpd/trunk@7260 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* some comments in decode.cMax Kellermann2008-04-121-0/+39
| | | | | | | I have spent some time to understand decodeParent(), which does a lot of obfuscated magic... I find it useful to help others to also understand it, so I wrote a few comments. git-svn-id: https://svn.musicpd.org/mpd/trunk@7259 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* integrated macro handleDecodeStart() into callerMax Kellermann2008-04-121-43/+40
| | | | | | | | Another patch indended to improve the CPP macro hell. This enlarges the function decodeParent(), but it cannot be converted into a standalone function easily, because it references so many local variables. git-svn-id: https://svn.musicpd.org/mpd/trunk@7258 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* use clearOutputBuffer()Max Kellermann2008-04-121-4/+2
| | | | | | clearOutputBuffer() also resets currentChunk; this might resolve a theoretical bug. git-svn-id: https://svn.musicpd.org/mpd/trunk@7257 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* do not check dc->start after loopMax Kellermann2008-04-121-1/+1
| | | | | | | | dc->start cannot be true after the loop, because it was the loop condition. dc->start could have been set by another thread between the while loop and the if, but I suspect this is not the case the author intended, so we just remove the dc->start check. git-svn-id: https://svn.musicpd.org/mpd/trunk@7256 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* use DECODE_ERROR_NOERROR instead of 0Max Kellermann2008-04-121-3/+3
| | | | | | In my opinion, the code becomes more readable when we explicitly check "==NOERROR" instead of an implicit 0 check. git-svn-id: https://svn.musicpd.org/mpd/trunk@7255 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* converted macro processDecodeInput() to functionMax Kellermann2008-04-121-52/+80
| | | | | | | | | | | Macros are ugly, and multi-line macros are even more ugly. This patch converts processDecodeInput() to a C function. The disadvantage may be that the function does not have access to the caller's local variables, which might be regarded as an advantage on the other hand. For this reason, we have to pass variable references. This costs a tiny bit of performance, but it's worth eliminating this monster macro, and further patches will optimize this cost down. git-svn-id: https://svn.musicpd.org/mpd/trunk@7254 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* added clearPlayerQueueLocked()Max Kellermann2008-04-121-43/+24
| | | | | | | since clearPlayerQueue() is always called within lockPlaylistInteraction() / unlockPlaylistInteraction(), it simplifies the code to add another function which calls these three functions. git-svn-id: https://svn.musicpd.org/mpd/trunk@7253 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* don't set quit=1 before breakMax Kellermann2008-04-121-5/+2
| | | | | Instead of setting quit=1, we can simply break out of the loop. git-svn-id: https://svn.musicpd.org/mpd/trunk@7252 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* simplified some code in decode.cMax Kellermann2008-04-121-11/+10
| | | | | | | The block after "if" breaks out of the loop. To make the code a little bit more readable, don't write the rest in an "else" block, since this code path does not break. git-svn-id: https://svn.musicpd.org/mpd/trunk@7251 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* add method availableOutputBuffer()Max Kellermann2008-04-123-2/+12
| | | | | | | | | The method availableOutputBuffer() calculates how many chunks are in use. This simplifies code which needs this information, and it can run without knowing OutputBuffer internals. The function knows how to calculate this when begin>end; this might have been a bug in decodeParent(), which does not. git-svn-id: https://svn.musicpd.org/mpd/trunk@7250 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* replace advanceOutputBufferTo() with trivial assignmentMax Kellermann2008-04-121-6/+1
| | | | | | After the previous patch, it is clear that the loop in advanceOutputBufferTo() can be replaced with a simple assignment. git-svn-id: https://svn.musicpd.org/mpd/trunk@7249 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* removed unused parameters from advanceOutputBufferTo()Max Kellermann2008-04-121-6/+2
| | | | | The parameter "currentChunkSent" is not used and can be dropped. git-svn-id: https://svn.musicpd.org/mpd/trunk@7248 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* moved code to function tailChunk()Max Kellermann2008-04-121-33/+58
| | | | | | This patch removes some clutter from decodeParent() by moving some code out. git-svn-id: https://svn.musicpd.org/mpd/trunk@7247 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* use free()+malloc() instead of realloc()Max Kellermann2008-04-121-1/+3
| | | | | | | realloc() has to copy data to the new buffer. Since convBuffer contains temporary data only, we can safely use free() plus a new malloc(), which saves the mempy(). git-svn-id: https://svn.musicpd.org/mpd/trunk@7246 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* some documentation about OutputBufferMax Kellermann2008-04-121-0/+9
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7245 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* Start using song pointers in core data structuresEric Wong2008-04-125-66/+53
| | | | | | | Instead of copying URLs everywhere... [merged r7186 from branches/ew] git-svn-id: https://svn.musicpd.org/mpd/trunk@7244 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* outputBuffer: remove unused variableEric Wong2008-04-121-1/+0
| | | | | [merged r7185 from branches/ew] git-svn-id: https://svn.musicpd.org/mpd/trunk@7243 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* song: document get_song_url()Eric Wong2008-04-121-0/+6
| | | | | [merged r7184 from branches/ew] git-svn-id: https://svn.musicpd.org/mpd/trunk@7242 09075e82-0dd4-0310-85a5-a0d7c8717e4f