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6bfdb2de88
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36 Commits

Author SHA1 Message Date
Tim Walker
6bfdb2de88 dcadec: set the output channel mode more accurately. 
When downmixing 2.1 to 2-channel, if the 2.0 portion is Lt/Rt, sum-difference or dual mono, the actual output will be the same (with the LFE either mixed-in or discarded).

Also, when downmixing an arbitrary layout to 2-channel, if the bitstream contains custom downmix coefficients targeting Lt/Rt, then the output will be Lt/Rt rather than regular Stereo.
 2014-01-05 16:41:56 +01:00
Michael Niedermayer
b6a9719941 dcadec: Decode LFE to avoid adding random data when downmixing with LFE 
Signed-off-by: Tim Walker <tdskywalker@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2013-12-06 23:37:05 +01:00
Tim Walker
7dc827b709 dcadec: Add some logging before returning on error 
Based on a patch by Michael Niedermayer.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2013-11-30 13:01:35 +01:00
Tim Walker
3c8507a845 dcadec: add disable_xch private option. 
This supplements the deprecated request_channels-based control of XCh decoding.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2013-11-28 22:02:53 +01:00
Tim Walker
220494ad0b dcadec: treat all 2-channel modes as Stereo in dca_downmix. 
The check for (prim_channels > 2) before calling dca_downmix made these
cases unreachable, but now 2.1 layouts will go through the downmix code.
Having dual mono, Lt/Rt and sum-difference layouts print errors when
regular Stereo doesn't seems pointless.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2013-11-28 22:02:53 +01:00
Tim Walker
aaa44d0299 dca: support mixing LFE in dca_downmix. 
Embedded downmix coefficients can use this.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2013-11-28 22:02:53 +01:00
Tim Walker
44b17d794a dca: extract core substream's embedded downmix coeffcient codes, if present. 
As per ETSI TS 102 114 V1.4.1 specification.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2013-11-28 22:02:53 +01:00
Tim Walker
27245b4e1b dca: remove embedded downmix coefficient extraction. 
It was based on an old, seemingly incorrect specification, so default
coefficients were always used anyway.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2013-11-28 22:02:50 +01:00
Tim Walker
b6d5e6aa10 dca: convert dca_default_coeffs to float. 
Easier to read, modify, and avoids relying on an outdated table.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2013-11-28 21:38:22 +01:00
Tim Walker
25609b63d2 dcadec: store the stereo downmix coefficients as float in the DCAContext. 
The 7-bit codes previously used are absent from the ETSI 102 114 V1.4.1 spec.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2013-11-28 21:35:22 +01:00
Tim Walker
89de5157b1 dcadec: implement request_channel_layout. 
Signed-off-by: Anton Khirnov <anton@khirnov.net>
 2013-11-28 21:10:29 +01:00
Tim Walker
37a3cac78c dcadec: simplify an expression 
Signed-off-by: Diego Biurrun <diego@biurrun.de>
 2013-11-19 02:02:49 +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
a9d50bb578 dcadec: Validate the lfe parameter 
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
 2013-09-20 14:14:45 +03:00
Ben Avison
800ffab48a dcadsp: Add a new method, qmf_32_subbands 
This does most of the work formerly carried out by
the static function qmf_32_subbands() in dcadec.c.

Signed-off-by: Martin Storsjö <martin@martin.st>
 2013-07-22 10:15:42 +03:00
Ben Avison
26ffcc7de1 dcadec: Use int32_to_float_fmul_array8 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2013-07-22 10:15:35 +03:00
Christophe Gisquet
b6293e2798 fmtconvert: Explicitly use int32_t instead of int 
Signed-off-by: Martin Storsjö <martin@martin.st>
 2013-07-17 11:02:47 +03:00
Luca Barbato
3802833bc1 dca: Respect the current limits in the downmixing capabilities 
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
 2013-07-12 04:34:49 +02:00
Luca Barbato
f261e50845 dca: Error out on missing DSYNC 
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
 2013-07-12 04:34:49 +02:00
Diego Biurrun
1db6a080bd dca: Move ff_dca_convert_bitstream() to the DCA common code 
This makes the DCA parser and decoder independent.
 2013-03-27 14:21:45 +01:00
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
Diego Biurrun
76b19a3984 Fix a number of incorrect intmath.h #includes. 2013-02-26 00:51:34 +01:00
Justin Ruggles
182821cff4 dca: decode directly to the user-provided AVFrame 2013-02-12 12:21:22 -05:00
Diego Biurrun
218aefce44 dsputil: Move LOCAL_ALIGNED macros to libavutil 2013-02-08 23:13:37 +01:00
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
Michael Niedermayer
5d47850bbd dcadec: skip QMF on unused channels 
When the extra rear channel is present but unused, the
s->channel_order_tab[] value for that channel is -1. The QMF can be
skipped for the extra channel, and doing so avoids an out-of-array read
on s->samples_chanptr[].

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
 2012-11-26 22:50:37 -05:00
Justin Ruggles
a903f8f087 Include libavutil/channel_layout.h instead of libavutil/audioconvert.h 
Also reorder some other #include when applicable.
 2012-11-11 13:35:12 -05:00
Justin Ruggles
8ac0f6767b dcadec: allow the decoder to change the channel layout mid-stream 2012-11-01 11:29:16 -04:00
Justin Ruggles
61d5313d94 dca: allocate a secondary buffer for extra channels when downmixing 
The output AVFrame buffer only has data for the downmix channels.
Fixes a segfault when decoding dca with request_channels == 2.
 2012-10-13 00:07:10 -04:00
Justin Ruggles
64c312aa29 dcadec: use float planar sample format 2012-10-01 13:42:43 -04:00
Diego Biurrun
1218777ffd avcodec: Convert some commented-out printf/av_log instances to av_dlog 2012-10-01 10:24:28 +02:00
Anton Khirnov
36ef5369ee Replace all CODEC_ID_* with AV_CODEC_ID_* 2012-08-07 16:00:24 +02:00
Diego Biurrun
19cf7163c1 dca: Switch dca_sample_rates to avpriv_ prefix; it is used across libs 2012-08-01 11:43:31 +02:00
Diego Biurrun
9e4bca16f8 dca: Move tables used outside of dcadec.c to a separate file. 2012-08-01 00:17:17 +02:00
Diego Biurrun
13a79cf84e dca: Rename dca.c ---> dcadec.c 
This will allow adding dca.c with tables used from other files.
 2012-08-01 00:17:16 +02:00