FFmpeg

Commit Graph

Author	SHA1	Message	Date
Reimar Döffinger	c9f6eab184	Detect byte-swapped AC-3 (aka DNET) and support decoding it directly. This allows the AC-3 decoder to be used directly with RealMedia decoders that unlike the libavformat one do not byte-swap automatically. Since the new code is only used in case we would fail directly otherwise there should be no risk for regressions. The "buf" pointer needs to be overwritten since otherwise the CRC check fails.	14 years ago
Justin Ruggles	fe2ff6d247	Separate format conversion DSP functions from DSPContext. This will be beneficial for use with the audio conversion API without requiring it to depend on all of dsputil. Signed-off-by: Mans Rullgard <mans@mansr.com> (cherry picked from commit `c73d99e672`)	14 years ago
Justin Ruggles	c73d99e672	Separate format conversion DSP functions from DSPContext. This will be beneficial for use with the audio conversion API without requiring it to depend on all of dsputil. Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	a8ae4e0e7b	Remove unneeded add bias from 3 functions. DSPContext.vector_fmul_window() DCADSPContext.lfe_fir() SynthFilterContext.synth_filter_float() Signed-off-by: Mans Rullgard <mans@mansr.com> (cherry picked from commit `80ba1ddb58`)	14 years ago
Justin Ruggles	80ba1ddb58	Remove unneeded add bias from 3 functions. DSPContext.vector_fmul_window() DCADSPContext.lfe_fir() SynthFilterContext.synth_filter_float() Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	79ce107847	cosmetics: indentation and spacing (cherry picked from commit `b5ec638343`)	14 years ago
Justin Ruggles	733dbe7d18	Remove the add bias hack for the C version of DSPContext.float_to_int16_*(). (cherry picked from commit `9d06d7bce3`)	14 years ago
Diego Elio Pettenò	e7e2df27f8	Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf. None of these symbols should be accessed directly, so declare them as hidden. Signed-off-by: Mans Rullgard <mans@mansr.com> (cherry picked from commit `d36beb3f69`)	14 years ago
Justin Ruggles	dff80041e3	Add ff_ prefix to ac3_common_init(). Signed-off-by: Mans Rullgard <mans@mansr.com> (cherry picked from commit `4c57cde942`)	14 years ago
Justin Ruggles	b5ec638343	cosmetics: indentation and spacing	14 years ago
Justin Ruggles	9d06d7bce3	Remove the add bias hack for the C version of DSPContext.float_to_int16_*().	14 years ago
Diego Elio Pettenò	d36beb3f69	Add ff_ prefix to data symbols of encoders, decoders, hwaccel, parsers, bsf. None of these symbols should be accessed directly, so declare them as hidden. Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Justin Ruggles	4c57cde942	Add ff_ prefix to ac3_common_init(). Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Stefano Sabatini	5d6e4c160a	Replace deprecated symbols SAMPLE_FMT_* with AV_SAMPLE_FMT_*, and enum SampleFormat with AVSampleFormat. Originally committed as revision 25730 to svn://svn.ffmpeg.org/ffmpeg/trunk	14 years ago
Carl Eugen Hoyos	eb0a4d3222	Fix compilation of AC3 decoder if E-AC3 decoder was disabled. Originally committed as revision 23131 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	cc8538ff93	ac3dec: return smaller of buf_size and frame_size instead of always returning frame_size. Originally committed as revision 22950 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Stefano Sabatini	2874c81cc8	Replace all remaining occurrences of AVERROR_NOMEM with AVERROR(ENOMEM). AVERROR_NOMEM is deprecated and will be dropped at the next libavutil major bump. Originally committed as revision 22791 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Stefano Sabatini	72415b2adb	Define AVMediaType enum, and use it instead of enum CodecType, which is deprecated and will be dropped at the next major bump. Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Carl Eugen Hoyos	ca6e7708b4	Add spectral extension to the E-AC-3 decoder. Original patch by Justin, updated and resubmitted by Christophe Gisquet, christophe D gisquet A gmail Originally committed as revision 22734 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	2c2cdc0bfb	Simplify error handling by processing header errors separate from CRC and buffer size vs. frame size errors. Originally committed as revision 21519 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	008f872f61	Only check frame size if the header is valid. Originally committed as revision 21439 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Reimar Döffinger	1460c79097	Use MULH instead of 64x64 multiplication, around 5% overall speedup on Intel Atom. Patch by myself and Yuriy Kaminskiy [yumkam mail ru] Originally committed as revision 21175 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	7934cbb3be	ac3dec: apply dynamic range compression to correct channels in dual-mono mode. Originally committed as revision 20533 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	187bc061e4	ac3dec: revert r20089. The change was just wrong. 10l for me. Originally committed as revision 20473 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	535497f193	Change an error to a warning to support broken AC-3 files known to exist. Fixes Issue 1426. Originally committed as revision 20110 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	3fdccca091	10l: wrong operation in stereo rematrixing Originally committed as revision 20106 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	2ed4439658	Simplify stereo rematrixing by only using one temporary variable. It is also about 1.8% faster on my system. Originally committed as revision 20090 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	16c91d2b23	remove unneeded assignment in inner loop. rematrixing bands are contiguous. Originally committed as revision 20089 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	8b11b44ea7	Rearrange loop structure for approx. 35-50% faster calc_transform_coeffs_cpl() depending on content. Originally committed as revision 20055 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	3b6c5ad2f6	Move variable declaration to inside of loop. Originally committed as revision 20053 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	025873738f	Cosmetics: Rename some variables. Originally committed as revision 20052 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	b5f4639b13	Simplify coupling band loop. Originally committed as revision 20051 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago
Justin Ruggles	a521aadfe8	cosmetics: reindent after last commit Originally committed as revision 19589 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Justin Ruggles	25dcd1823c	ac3dec: simplify zero-bit mantissa dithering by calculating it conditionally during mantissa decoding, then only removing it from the coupling range for coupled channels which do not use dithering. Originally committed as revision 19588 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Justin Ruggles	b972c06a8f	cosmetics: indentation and line wrap Originally committed as revision 19587 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Justin Ruggles	c36ea0600c	cosmetics after last commit Originally committed as revision 19586 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Justin Ruggles	3f93716809	Modify decode_band_structure() so that the actual band structure is only used within the function. This removes the need to have the coupling band structure stored in the AC3DecodeContext. Originally committed as revision 19585 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Justin Ruggles	603139022d	Use coupling band sizes instead of coupling band structure when calculating coupling transform coefficients. Originally committed as revision 19584 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Justin Ruggles	eb98cdfa8d	cosmetics: add more detailed information to the documentation for decode_band_structure(). Originally committed as revision 19577 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Diego Biurrun	d15153244f	refactoring: properly separate AC-3 and E-AC-3 code Originally committed as revision 19501 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Diego Biurrun	89547cfb36	Make sure that eac3_decoder only gets enabled when CONFIG_EAC3_DECODER is set. Originally committed as revision 19500 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Ronald S. Bultje	ce863d7f36	Rename ff_log_missing_feature() to av_log_missing_feature(). Originally committed as revision 19294 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Justin Ruggles	ae04de316f	eac3dec: revert commit r18860. keep the AHT IDCT 24-bit. will make AHT GAQ dequantization 24-bit in a separate commit. Originally committed as revision 18887 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Diego Biurrun	1754fe4d30	The AC-3 decoder is now LGPL. Exchange the license header and change references in the build system and documentation that mark it as GPL. Originally committed as revision 18876 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Jason Garrett-Glaser	d869a460db	LGPL version of ac3_decode_transform_coeffs_ch, ~12.4% faster. Originally committed as revision 18875 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Justin Ruggles	9a7a71ed4c	eac3dec: use 16-bit pre-mantissas instead of 24-bit in AHT decoding. it is simpler and also fixes a bug in GAQ dequantization. Originally committed as revision 18860 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Justin Ruggles	1ac7d1ac50	ac3dec: fix coupling range check. the start subband must be less than the end subband. Originally committed as revision 18857 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Siarhei Siamashka	7d485f165f	Support for getting (i)MDCT output multiplied by a constant scaling factor. Scaling (i)MDCT output has no runtime overhead and can be used to improve performance of audio codecs. All the changes are only needed in 'ff_mdct_init' function and slow down initialization a bit. Originally committed as revision 18855 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Justin Ruggles	778bc09bbe	cosmetics: line wrap and vertical alignment Originally committed as revision 18752 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago
Justin Ruggles	396b73c7f7	ac3dec: Remove unneeded context variable, num_cpl_subbands. It is also not needed for spectral extension or enhanced coupling since it is redundant information, so I am removing it from decode_band_structure() as well. Originally committed as revision 18751 to svn://svn.ffmpeg.org/ffmpeg/trunk	16 years ago

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522 Commits (98df605f7a8e80471a113f7beb0983c90aa84525)