People want using aptx(HD) early. So I decide to use ffmpeg.
90 samples are only 90/44100 s = 2ms , which is ignorable. On 12/13/18 11:43 PM, Pali Rohár wrote: > On Thursday 13 December 2018 19:43:38 EHfive wrote: >> diff --git a/src/modules/bluetooth/a2dp/a2dp-codecs.h >> b/src/modules/bluetooth/a2dp/a2dp-codecs.h >> index aefafb635..a6f054aec 100644 >> --- a/src/modules/bluetooth/a2dp/a2dp-codecs.h >> +++ b/src/modules/bluetooth/a2dp/a2dp-codecs.h >> @@ -141,6 +141,9 @@ >> #define APTX_SAMPLING_FREQ_44100 0x02 >> #define APTX_SAMPLING_FREQ_48000 0x01 >> >> +#define APTX_HD_VENDOR_ID 0x000000D7 > This ID is assigned to Qualcomm Technologies, Inc. Not for aptX HD > codec, or aptX HD vendor. > >> +#define APTX_HD_CODEC_ID 0x0024 >> + >> #define LDAC_VENDOR_ID 0x0000012d >> #define LDAC_CODEC_ID 0x00aa >> > I wrote alternative implementation of aptX codec support for pulseaudio. > It does not use big ffmpeg, but rather small libopenaptx library from > https://github.com/pali/libopenaptx Patches are already in mailing list... > > Anyway, aptX decoder (both hd and non-hd variants) in ffmpeg has delay > of about 90 samples. I have already some idea how to fix... and will try > to implement it in libopenaptx. (Recompiling ffmpeg just for testing and > debugging one codec is big pain; small library is better for this). >
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