| Commit message (Collapse) | Author | Files | Lines |
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After we've been hit by Large File Support problems several times in
the past week (which only occur on 32 bit platforms, which I don't
have), this is yet another attempt to fix the issue.
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Always assert that the audio format of the new chunk is valid.
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This updates the copyright header to all be the same, which is
pretty much an update of where to mail request for a copy of the GPL
and the years of the MPD project. This also puts all committers under
'The Music Player Project' umbrella. These entries should go
individually in the AUTHORS file, for consistancy.
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In !NDEBUG, remember which audio_format is stored in every chunk and
every pipe. Check the audio_format of every new data block appended
to the music_chunk, and the format of every new chunk appended to the
music_pipe.
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Added two assertions.
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The value of music_chunk.next is undefined for a chunk returned by
music_pipe_shift(). For more pedantic debugging, poison the reference
before returning the chunk.
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music_pipe_peek() is similar to music_pipe_shift(), but doesn't remove
the chunk. This allows it to be used with a "const" music_pipe.
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Turn the music_pipe into a simple music_chunk queue. The music_chunk
allocation code is moved to music_buffer, and is now managed with a
linked list instead of a ring buffer. Two separate music_pipe objects
are used by the decoder for the "current" and the "next" song, which
greatly simplifies the cross-fading code.
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Added music_pipe_allocate(), music_pipe_push() and
music_pipe_cancel(). Those functions allow the caller (decoder thread
in this case) to do its own chunk management. The functions
music_pipe_flush() and music_pipe_tag() can now be removed.
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Moved some code from music_pipe_write() and music_pipe_expand(). Only
music_chunk.c should access the music_chunk internals.
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The function is unused, since decoder_api() uses music_pipe_write() /
music_pipe_expand() now.
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This new API gives the caller a writable buffer to the music pipe
chunk. This may allow the caller to eliminate several buffer copies,
because it may manipulate the returned buffer, until it calls
music_pipe_expand().
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The chunk index passed to successor() must be valid, i.e. it must be
smaller than num_chunks.
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When a CANCEL command is received, the player should drop all chunks
of the next song. Added new funciton music_pipe_chop() which is used
for that.
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Provide a debug function which asserts on the sample format of all
chunks. Call this function in each iteration of the player main loop.
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Added an additional assertion which checks partial frames in the
existing tail chunk.
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Each music chunk can now carry a tag object. Decoder plugins which
support it (e.g. oggvorbis) may use this to inject decoded tags into
their output.
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These two functions will care about memory allocation and deallocation
in the future.
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The name "num_chunks" expresses the meaning of the variable better.
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Rename all variables and struct members.
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Don't bother to pass these values as parameters to tail_chunk().
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Last music_pipe rename patch: renamed the global variable (singleton).
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Eliminate the deprecated utils.h memory allocation functions.
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.. and rename dc.audioFormat to dc.in_audio_format. The music pipe
does not need to know the audio format, and its former "audioFormat"
property indicated the format of the most recently added chunk, which
might be confusing when you are reading the oldest chunks.
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Don't make tail_chunk() calculate the frame size again.
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Rename all functions to the new prefix.
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.. and rename ob_chunk to struct music_chunk.
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No CamelCase in the file name. The output_buffer struct is going to
be renamed to music_pipe. There are so many buffer levels in MPD, and
calling this one "output buffer" is wrong, because it's not the last
buffer before the music reaches the output devices.
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Splitting a frame between two buffer chunks causes distortion in the
output. MPD used to assume that the chunk size 1020 would never cause
splitted frames, but that isn't the case for 24 bit stereo (127.5
frames), and even less for files with even more channels.
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The function ob_is_empty() is called very often. It's worth it to
convert it to an inline function.
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"bool" should be used in C99 programs for boolean values.
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When there are standardized headers, use these instead of the bloated
os_compat.h.
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Typedefs shouldn't be used, use the bare struct names instead.
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Do full C99 integer type conversion in all modules which were not
touched by Eric's merged patch.
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This releases several include file dependencies. As a side effect,
"CHUNK_SIZE" isn't defined by decoder_api.h anymore, so we have to
define it directly in the plugins which need it. It just isn't worth
it to add it to the decoder plugin API.
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Since we moved all PCM conversions to decoder_data(), the attribute
convState isn't being used anymore by the OutputBuffer code. Move it
to struct decoder.
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Code simplification: since we are not using in-band signalling with
the chunk index anymore, we can just return a pointer to the tail
chunk instead of the index.
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OutputBuffer should be a more generic low-level library, without
dependencies to the other headers. This patch adds the field
"notify", which is used to signal the player thread. It is passed in
the constructor, and removes the need to compile with the decode.h
header.
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Moved all of the player-waiting code to decoder_data(), to make
OutputBuffer more generic.
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Don't use wrappers like player_wakeup_decoder_nb(). These have been
wrappers calling notify.c functions, for compatibility with the
existing code when we migrated to notify.c.
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