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The stream_decode() and file_decode() methods returned a boolean,
indicating whether they were able to decode the song. This is
redundant, since we already know that: if decoder_initialized() has
been called (and dc.state==DECODE), the plugin succeeded. Change both
methods to return void.
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Having an array instead of individual variables allows the use of the
replay_gain_mode enum as an array index.
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The function simplifies wavpack_replaygain(), because it already
contains the float parser, and it works with a fixed buffer instead of
doing expensive heap allocations.
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This allows us to remove the "static char[]" hack.
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Renamed functions and variables.
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Wavpack's try_decode() implementation does nothing useful, it only
duplicates code already in stream_decode() / file_decode(), and slows
down MPD.
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This patch makes 24-bit samples available for mpd. I tested with the
WavPack Test Suite found on wavpack.com:
http://www.rarewares.org/wavpack/test_suite.zip
Every test file worked fine.
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At this moment the wavpack lib doesn't use the return value of the
push_back function, which has an equivalent meaning of the return
value of ungetc(). This is a lucky situation, because so far it
simply returned with 1 as a hard coded value. From now on the
function will return EOF on error. (This function makes exactly one
byte pushable back.)
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A new function has been added to do a cast and a little check in the
wavpack-mpd input stream wrapper.
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I think this makes the code more easily modifiable and prevents some
annoying mistakes.
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There are some functions in the wavpack-mpd input streams wrapper
which had too commonly used names (especially can_seek). I prefixed
these with "wavpack_input_".
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Not every function header has its return type in a distinct line. This
patch corrects that. This way there is more space for the arguments.
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Using wvc streams the seekableness depends on the seekability of the
wvc stream as well.
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The input stream opened for wvc is not closed in an if branch. A
close call has been added.
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Somehow seeking is disabled on all kinds of wavpack playbacks now in
the git version. This patch corrects that.
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libwavpack expects the read_bytes() stream method to fill the whole
buffer, and fails badly when we return a partial read (i.e. not enough
data available yet). This caused wavpack streams to break.
Re-implement the buffer filling loop.
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The input_stream object is opened and closed by the caller.
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Instead of checking the stream_types bit set, we can simply check
whether the methods stream_decode() and file_decode() are implemented.
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The number of tag types is known at compile time. Use the GLib macro
G_N_ELEMENTS instead of having a NULL element at the end.
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Don't store tag type values in a plain integer, use the proper enum.
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Replace deprecated code with GLib.
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Instead of manually waiting for the input stream to become ready (to
catch server errors), just read the first byte. Since the
wavpack_input has the capability to push back one byte, we can simply
re-feed it. Advantage is: decoder_read() handles everything for us,
i.e. waiting for the stream, polling for decoder commands and error
handling.
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Use boolean true/false instead of 1/0.
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Renamed functions and variables.
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Fixed the indent of the switch statement in format_samples_int().
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The try_decode() method may have read some data from the stream, which
is now lost. To make this data available to other methods, get it
back by rewinding the input stream after each try_decode() invocation.
The ogg and wavpack plugins did this manually and inconsistently; this
code can now be removed.
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Don't pass the "seekable" flag with every decoder_data() invocation.
Since that flag won't change within the file, it is enough to pass it
to decoder_initialized() once per file.
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The strings were constant, but the pointers weren't. C syntax is
somewhat tricky..
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All decoder_plugin structs are initialized at compile time, and must
never change.
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Don't return 0/-1 on success/error, but true/false. Instead of int,
use bool for storing flags.
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A decoder_flush() invocation was missing in the FLAC plugin, resulting
in casual assertion failures due to a wrong assumption about the last
chunk's audio format. It's much easier to remove that decoder_flush()
function and make the decoder thread call ob_flush().
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Call ob_clear() in decoder_command_finished() instead of implementing
that call in every decoder plugin.
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For boolean values and success flags, use bool instead of integer (1/0
for true/false, 0/-1 for success/failure).
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Renamed all functions and variables.
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Everybody should use struct input_stream.
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These plugins are not input plugins, they are decoder plugins. No
CamelCase in the directory name.
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Don't compile the sources of disabled decoder plugins at all, and
don't attempt to register these.
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The last bit of CamelCase in audio_format.h. Additionally, rename a
bunch of local variables.
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"bool" should be used in C99 programs for boolean values.
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The old struct initializers are error prone and don't allow moving
elements around. Since we are going to overhaul some of the APIs
soon, it's easier to have all implementations use C99 initializers.
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Get rid of CamelCase, and don't use a typedef, so we can
forward-declare it, and unclutter the include dependencies.
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The previous patch enabled these warnings. In Eric's branch, they
were worked around with a generic deconst_ptr() function. There are
several places where we can add "const" to pointers, and in others,
libraries want non-const strings. In the latter, convert string
literals to "static char[]" variables - this takes the same space, and
seems safer than deconsting a string literal.
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Since tag_new() uses xmalloc(), it cannot fail - if we're really out
of memory, the process will abort.
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Getting rid of CamelCase; not having typedefs also allows us to
forward-declare the structures.
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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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The code said "decoder_command==STOP" because that was a conversion
from the old "dc->stop" test. As we can now check for all commands in
one test, we can simply rewrite that to decoder_command!=NONE.
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The old code called can_seek() with the uninitialized pointer
"isp.is". Has this ever worked? Anyway, initialize "isp" first, then
call can_seek(&isp).
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