Vittorio Giovara
def97856de
lavc: AV-prefix all codec capabilities
...
Express bitfields more simply.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
2015-07-27 15:24:58 +01:00
Andreas Cadhalpun
243e8443cd
alac: Reject rice_limit 0 if compression is used
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If in compression mode rice_limit = 0 leads to call
`show_bits(gb, k)` in `decode_scalar` with k = 0.
Request a sample in case it is valid and it should be accepted.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
CC: libav-stable@libav.org
2015-05-08 11:10:51 +02:00
Diego Biurrun
7f9f771eac
avcodec: Don't anonymously typedef structs
2015-02-14 10:13:49 -08:00
Diego Biurrun
cc8163e1a3
avcodec: more correct printf specifiers
2014-03-22 14:08:20 +01:00
Diego Biurrun
b2bed9325d
cosmetics: Group .name and .long_name together in codec/format declarations
2013-10-03 23:32:01 +02:00
Martin Storsjö
59480abce7
alac: Do bounds checking of lpc_order read from the bitstream
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In lpc_prediction(), we write up to array element 'lpc_order' in
an array allocated to hold 'max_samples_per_frame' elements.
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
2013-09-29 19:57:10 +03:00
Martin Storsjö
35cbc98b72
alac: Check that the channels fit at the given offset
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The code tries to decode a number of channels at the
offset given by the ff_alac_channel_layout_offsets table.
Even if the number of channels decoded so far doesn't
exceed the total number of channels, we need to check that
we actually can decode that number of channels at this offset
as well.
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
2013-09-03 22:57:52 +03:00
Martin Storsjö
f7c5883126
alac: Limit max_samples_per_frame
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Otherwise buffer size calculations in allocate_buffers could
overflow later, making the code think a large enough buffer
actually was allocated.
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
2013-09-03 22:56:36 +03:00
Diego Biurrun
6d97484d72
avcodec: av_log_ask_for_sample() ---> avpriv_request_sample()
2013-03-13 21:20:12 +01:00
Anton Khirnov
759001c534
lavc decoders: work with refcounted frames.
2013-03-08 07:38:30 +01:00
Justin Ruggles
5cd597f22f
alac: decode directly to the user-provided AVFrame
2013-02-12 12:21:21 -05:00
Justin Ruggles
68a04b0cce
alacdec: do not be too strict about the extradata size
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Sometimes the extradata has duplicate atoms, but that shouldn't prevent
decoding. Just ensure that it is at least 36 bytes as a sanity check.
CC: libav-stable@libav.org
2012-12-22 12:18:41 -05:00
Justin Ruggles
5e1bbb8c7e
alacenc: add support for multi-channel encoding
2012-12-05 16:13:37 -05:00
Anton Khirnov
594d4d5df3
lavc: add a wrapper for AVCodecContext.get_buffer().
...
It will be useful in the upcoming transition to refcounted AVFrames.
2012-12-04 21:41:59 +01:00
Justin Ruggles
a903f8f087
Include libavutil/channel_layout.h instead of libavutil/audioconvert.h
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Also reorder some other #include when applicable.
2012-11-11 13:35:12 -05:00
Justin Ruggles
46a86c6194
alacdec: set bits_per_raw_sample
2012-10-21 23:54:51 -04:00
Anton Khirnov
36ef5369ee
Replace all CODEC_ID_* with AV_CODEC_ID_*
2012-08-07 16:00:24 +02:00
Justin Ruggles
81f548de57
alac: check for truncated packets
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This will give a clearer error message when the error is caused by a
truncated packet.
2012-07-27 13:52:20 -04:00
Justin Ruggles
fb57e913e1
alac: reverse lpc coeff order, simplify filter
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Reversing the lpc coefficient order simplifies indexing in the filter.
2012-07-27 13:52:19 -04:00
Justin Ruggles
4cd22b7738
alac: fix channel pointer assignment for 24 and 32-bit
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Needs to be done separately for each element.
2012-07-19 20:14:29 -04:00
Justin Ruggles
eeb55f5f2f
alac: cosmetics: general pretty-printing and comment clean up
2012-07-19 13:26:48 -04:00
Justin Ruggles
f3e5a7844b
alac: calculate buffer size outside the loop in allocate_buffers()
2012-07-19 13:26:48 -04:00
Justin Ruggles
bae83f2c74
alac: change some data types to plain int
2012-07-19 13:26:48 -04:00
Justin Ruggles
2aebac6918
alac: cosmetics: rename some variables and function names
2012-07-19 13:26:48 -04:00
Andrew D'Addesio
1b3ef155d7
alac: multi-channel decoding support
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Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
2012-07-19 13:26:48 -04:00
Justin Ruggles
81c9e2e6d0
alac: split element parsing into a separate function
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This will make multi-channel implementation simpler.
Based partially on a patch by Andrew D'Addesio <modchipv12@gmail.com>.
2012-07-19 13:26:48 -04:00
Justin Ruggles
cd632619d9
alac: support a read sample size of up to 32
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Use get_bits_long() in decode_scalar().
Use unsigned int for decoded value.
2012-07-19 13:26:48 -04:00
Justin Ruggles
73dc0db486
alac: output in planar sample format
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Avoids unneeded interleaving and allows for reusing the AVFrame output buffer
as the internal buffer for 24-bit and 32-bit sample size.
2012-07-19 13:26:48 -04:00
Justin Ruggles
6482bd8831
alac: add 32-bit decoding support
2012-07-19 13:26:48 -04:00
Andrew D'Addesio
6cda74c155
alac: simplify channel interleaving
...
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
2012-07-19 13:26:48 -04:00
Justin Ruggles
5138ff143f
alac: use AVPacket fields directly in alac_decode_frame()
2012-07-19 13:26:47 -04:00
Justin Ruggles
7a206eb32f
alac: fix check for valid max_samples_per_frame
2012-07-19 13:26:47 -04:00
Justin Ruggles
1193d3fedd
alac: use get_sbits() to read LPC coefficients instead of casting
2012-07-19 13:26:47 -04:00
Justin Ruggles
7a50ec6799
alac: move the current samples per frame to the ALACContext
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This will simplify the multi-channel implementation.
2012-07-19 13:26:47 -04:00
Justin Ruggles
46043962ea
alac: avoid using a double-negative when checking if the frame is compressed
2012-07-19 13:26:47 -04:00
Justin Ruggles
9a6c528e08
alac: factor out output_size check in predictor_decompress_fir_adapt()
2012-07-19 13:26:47 -04:00
Justin Ruggles
ebd4c3add1
alac: factor out loading of next decoded sample in LPC prediction
2012-07-19 13:26:47 -04:00
Justin Ruggles
a4ecd41442
alac: use index into buffer_out instead of incrementing the pointer
2012-07-19 13:26:47 -04:00
Justin Ruggles
f2515cd629
alac: simplify lpc coefficient adaptation
2012-07-19 13:26:47 -04:00
Justin Ruggles
abc4376b31
alac: reduce the number of local variables needed in lpc prediction
2012-07-19 13:26:47 -04:00
Justin Ruggles
01880d287b
alac: simplify 1st order prediction and reading of warm-up samples
2012-07-19 13:26:46 -04:00
Justin Ruggles
d0c0bf0d3e
alac: cosmetics: reindent after last commit
2012-07-19 13:26:46 -04:00
Justin Ruggles
79def4c523
alac: remove unneeded conditionals in predictor_decompress_fir_adapt()
2012-07-19 13:26:46 -04:00
Justin Ruggles
4bcd637dcb
alac: use sizeof() instead of hardcoded data sizes
2012-07-19 13:26:46 -04:00
Justin Ruggles
91620a04f1
alac: make block_size signed
...
It does not need to be unsigned.
2012-07-19 13:26:46 -04:00
Justin Ruggles
2fc24b3273
alac: remove a duplicate local variable
2012-07-19 13:26:46 -04:00
Justin Ruggles
5177413d20
alac: conditionally set sign_modifier to 1
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It is already unconditionally set to 0 prior to this, so we can modify it
only when needed.
2012-07-19 13:26:46 -04:00
Justin Ruggles
7e6593e977
alac: eliminate 2 unneeded local variables in bastardized_rice_decompress()
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x_modified is just unnecessary, and final_val can be removed by simplifying
the unsigned-to-signed conversion.
2012-07-19 13:26:46 -04:00
Justin Ruggles
6fd8a28b59
alac: adjust conditions for updating entropy decoder history
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avoids some unnecessary arithmetic in certain situations
2012-07-19 13:26:46 -04:00
Justin Ruggles
a06fdadd97
alac: cosmetics: reindent after last commit
2012-07-19 13:26:46 -04:00
