Hi Jaroslav On Fri, Sep 13, 2024 at 10:29 AM Shengjiu Wang <shengjiu.wang@xxxxxxxxx> wrote: > > On Fri, Sep 6, 2024 at 6:05 PM Shengjiu Wang <shengjiu.wang@xxxxxxx> wrote: > > > > This function is base on the accelerator implementation > > for compress API: > > https://patchwork.kernel.org/project/alsa-devel/patch/20240731083843.59911-1-perex@xxxxxxxx/ > > Hi Jaroslav > > Shall I add this patch to my patch set next time? Last time I > reported an issue > about "list_for_each_entry_safe_reverse", I can help to add it. or > will you send > another version by yourself? A gentle reminder, look forward to your reply. Thanks. Best regards Shengjiu Wang > > Best regards > Shengjiu Wang > > > > > Audio signal processing also has the requirement for memory to > > memory similar as Video. > > > > This asrc memory to memory (memory ->asrc->memory) case is a non > > real time use case. > > > > User fills the input buffer to the asrc module, after conversion, then asrc > > sends back the output buffer to user. So it is not a traditional ALSA playback > > and capture case. > > > > Because we had implemented the "memory -> asrc ->i2s device-> codec" > > use case in ALSA. Now the "memory->asrc->memory" needs > > to reuse the code in asrc driver, so the patch 1 and patch 2 is for refining > > the code to make it can be shared by the "memory->asrc->memory" > > driver. > > > > Other change is to add memory to memory support for two kinds of i.MX ASRC > > modules. > > > > changes in v3: > > - use Jaroslav's suggestion for header file compress_params.h (PATCH 01) > > - remove the ASRC_OUTPUT_FORMAT/ASRC_OUTPUT_RATE definition > > - remove ASRC_RATIO_MOD in this version because it uses .set_metadata() > > Will wait Jaroslav's update or other better method in the future. > > - Address some comments from Pierre. > > > > changes in v2: > > - Remove the changes in compress API > > - drop the SNDRV_COMPRESS_SRC_RATIO_MOD > > - drop the SND_AUDIOCODEC_SRC and struct snd_dec_src > > - define private metadata key value > > ASRC_OUTPUT_FORMAT/ASRC_OUTPUT_RATE/ASRC_RATIO_MOD > > > > Shengjiu Wang (6): > > ALSA: compress: Add output rate and output format support > > ASoC: fsl_asrc: define functions for memory to memory usage > > ASoC: fsl_easrc: define functions for memory to memory usage > > ASoC: fsl_asrc_m2m: Add memory to memory function > > ASoC: fsl_asrc: register m2m platform device > > ASoC: fsl_easrc: register m2m platform device > > > > include/uapi/sound/compress_params.h | 23 +- > > sound/soc/fsl/Kconfig | 1 + > > sound/soc/fsl/Makefile | 2 +- > > sound/soc/fsl/fsl_asrc.c | 179 ++++++- > > sound/soc/fsl/fsl_asrc.h | 2 + > > sound/soc/fsl/fsl_asrc_common.h | 70 +++ > > sound/soc/fsl/fsl_asrc_m2m.c | 727 +++++++++++++++++++++++++++ > > sound/soc/fsl/fsl_easrc.c | 261 +++++++++- > > sound/soc/fsl/fsl_easrc.h | 4 + > > 9 files changed, 1260 insertions(+), 9 deletions(-) > > create mode 100644 sound/soc/fsl/fsl_asrc_m2m.c > > > > -- > > 2.34.1 > >
