May 2019 - Patch - mailman.alsa-project.org

[PATCH 0/2] add pcm_file support in MMAP read access mode
by Adam Miartus 23 May '19

23 May '19

adds support for overwritting input buffer in MMAP access mode for in pcm_file plugin new api pcm_fast_ops callback mmap_begin is introduced to ease the operation needed to overwrite mmaped buffer. this allows to modify only the next continuous part of data in ring buffer. Adam Miartus (2): pcm: add mmap_begin callback to snd_pcm_fast_ops_t api pcm_file: add infile read support for mmap mode src/pcm/pcm.c | 6 ++++++ src/pcm/pcm_file.c | 31 +++++++++++++++++++++++++++++++ src/pcm/pcm_local.h | 1 + 3 files changed, 38 insertions(+) -- 2.7.4

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[PATCH - alsa-lib 0/1] pcm_file add missing unlock
by Adam Miartus 23 May '19

23 May '19

previous patches: pcm: file: add support for infile reading in non interleaved mode pcm: file: use snd_pcm_file_areas_read_infile for readi introduced an issue where pcm would not be unlocked on early return Adam Miartus (1): pcm_file: add missing unlock on early return src/pcm/pcm_file.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) -- 2.7.4

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[PATCH - alsa-lib 4/4] pcm_file: add infile read support for mmap mode
by Adam Miartus 21 May '19

21 May '19

mmap_begin callback is used to copy data from input file to mmaped buffer guard for corner use of api (multiple mmap_begin calls by user) is introduced to check if next continuous buffer was already overwritten buffer is overwritten with input file data only in case of stream capture Signed-off-by: Adam Miartus <amiartus(a)de.adit-jv.com> Reviewed-by: Timo Wischer <twischer(a)de.adit-jv.com> diff --git a/src/pcm/pcm_file.c b/src/pcm/pcm_file.c index 10d227b..7d3439a 100644 --- a/src/pcm/pcm_file.c +++ b/src/pcm/pcm_file.c @@ -88,6 +88,7 @@ typedef struct { size_t buffer_bytes; struct wav_fmt wav_header; size_t filelen; + char ifmmap_overwritten; } snd_pcm_file_t; #if __BYTE_ORDER == __LITTLE_ENDIAN @@ -626,6 +627,8 @@ static snd_pcm_sframes_t snd_pcm_file_mmap_commit(snd_pcm_t *pcm, const snd_pcm_channel_area_t *areas; snd_pcm_sframes_t result; + file->ifmmap_overwritten = 0; + result = snd_pcm_mmap_begin(file->gen.slave, &areas, &ofs, &siz); if (result >= 0) { assert(ofs == offset && siz == size); @@ -636,6 +639,32 @@ static snd_pcm_sframes_t snd_pcm_file_mmap_commit(snd_pcm_t *pcm, return result; } +static int snd_pcm_file_mmap_begin(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas, + snd_pcm_uframes_t *offset, snd_pcm_uframes_t *frames) +{ + snd_pcm_file_t *file = pcm->private_data; + snd_pcm_channel_area_t areas_if[pcm->channels]; + snd_pcm_uframes_t frames_if; + void *buffer = NULL; + int result; + + result = snd_pcm_mmap_begin(file->gen.slave, areas, offset, frames); + if (result < 0) + return result; + + if (pcm->stream != SND_PCM_STREAM_CAPTURE) + return result; + + /* user may run mmap_begin without mmap_commit multiple times in row */ + if (file->ifmmap_overwritten) + return result; + file->ifmmap_overwritten = 1; + + snd_pcm_file_areas_read_infile(pcm, *areas, *offset, *frames); + + return result; +} + static int snd_pcm_file_hw_free(snd_pcm_t *pcm) { snd_pcm_file_t *file = pcm->private_data; @@ -662,6 +691,7 @@ static int snd_pcm_file_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params) file->wbuf_size = slave->buffer_size * 2; file->wbuf_size_bytes = snd_pcm_frames_to_bytes(slave, file->wbuf_size); file->wbuf_used_bytes = 0; + file->ifmmap_overwritten = 0; assert(!file->wbuf); file->wbuf = malloc(file->wbuf_size_bytes); if (file->wbuf == NULL) { @@ -773,7 +803,7 @@ static const snd_pcm_fast_ops_t snd_pcm_file_fast_ops = { .poll_descriptors = snd_pcm_generic_poll_descriptors, .poll_revents = snd_pcm_generic_poll_revents, .htimestamp = snd_pcm_generic_htimestamp, - .mmap_begin = NULL, + .mmap_begin = snd_pcm_file_mmap_begin, }; /** -- 2.7.4

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[PATCH - alsa-lib 3/4] pcm: add mmap_begin callback to snd_pcm_fast_ops_t api
by Adam Miartus 21 May '19

21 May '19

main motivation for adding the callback is to use it to enable operation on mmaped buffer before user access for pcm_file plugin support for MMAP read access with masking by data from input file is not implemented for pcm_file plugin, by adding this callback implementing such feature can be done by rewriting next continuous portion of buffer on each mmap_begin call plugins like softvol use pcm_plugin interface and overwrite the buffer by looping around it in avail_update callback, this patch hopes to simplify the task by adding new api callback, removing the need for rewriting pcm_file (to use pcm_plugin callbacks) and careful checking when looping around whole mmaped buffer Signed-off-by: Adam Miartus <amiartus(a)de.adit-jv.com> Reviewed-by: Timo Wischer <twischer(a)de.adit-jv.com> diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c index 3a71d79..323926e 100644 --- a/src/pcm/pcm.c +++ b/src/pcm/pcm.c @@ -7129,7 +7129,13 @@ int __snd_pcm_mmap_begin(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas, snd_pcm_uframes_t f; snd_pcm_uframes_t avail; const snd_pcm_channel_area_t *xareas; + assert(pcm && areas && offset && frames); + + if (pcm->fast_ops->mmap_begin) + return pcm->fast_ops->mmap_begin(pcm->fast_op_arg, areas, offset, frames); + + /* fallback for plugins that do not specify new callback */ xareas = snd_pcm_mmap_areas(pcm); if (xareas == NULL) return -EBADFD; diff --git a/src/pcm/pcm_dmix.c b/src/pcm/pcm_dmix.c index 274726e..96049e0 100644 --- a/src/pcm/pcm_dmix.c +++ b/src/pcm/pcm_dmix.c @@ -990,6 +990,7 @@ static const snd_pcm_fast_ops_t snd_pcm_dmix_fast_ops = { .poll_descriptors = snd_pcm_direct_poll_descriptors, .poll_descriptors_count = NULL, .poll_revents = snd_pcm_dmix_poll_revents, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_dshare.c b/src/pcm/pcm_dshare.c index b75809c..328ef83 100644 --- a/src/pcm/pcm_dshare.c +++ b/src/pcm/pcm_dshare.c @@ -667,6 +667,7 @@ static const snd_pcm_fast_ops_t snd_pcm_dshare_fast_ops = { .poll_descriptors = snd_pcm_direct_poll_descriptors, .poll_descriptors_count = NULL, .poll_revents = snd_pcm_direct_poll_revents, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_dsnoop.c b/src/pcm/pcm_dsnoop.c index 58b1e53..5b9d9f5 100644 --- a/src/pcm/pcm_dsnoop.c +++ b/src/pcm/pcm_dsnoop.c @@ -544,6 +544,7 @@ static const snd_pcm_fast_ops_t snd_pcm_dsnoop_fast_ops = { .poll_descriptors = snd_pcm_direct_poll_descriptors, .poll_descriptors_count = NULL, .poll_revents = snd_pcm_direct_poll_revents, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_file.c b/src/pcm/pcm_file.c index dcaa41d..10d227b 100644 --- a/src/pcm/pcm_file.c +++ b/src/pcm/pcm_file.c @@ -773,6 +773,7 @@ static const snd_pcm_fast_ops_t snd_pcm_file_fast_ops = { .poll_descriptors = snd_pcm_generic_poll_descriptors, .poll_revents = snd_pcm_generic_poll_revents, .htimestamp = snd_pcm_generic_htimestamp, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_generic.h b/src/pcm/pcm_generic.h index dfbe21a..683e60b 100644 --- a/src/pcm/pcm_generic.h +++ b/src/pcm/pcm_generic.h @@ -161,4 +161,3 @@ snd_pcm_chmap_query_t **snd_pcm_generic_query_chmaps(snd_pcm_t *pcm); snd_pcm_chmap_t *snd_pcm_generic_get_chmap(snd_pcm_t *pcm); int snd_pcm_generic_set_chmap(snd_pcm_t *pcm, const snd_pcm_chmap_t *map); int snd_pcm_generic_may_wait_for_avail_min(snd_pcm_t *pcm, snd_pcm_uframes_t avail); - diff --git a/src/pcm/pcm_hooks.c b/src/pcm/pcm_hooks.c index 4416d36..14396fa 100644 --- a/src/pcm/pcm_hooks.c +++ b/src/pcm/pcm_hooks.c @@ -200,6 +200,7 @@ static const snd_pcm_fast_ops_t snd_pcm_hooks_fast_ops = { .poll_descriptors = snd_pcm_generic_poll_descriptors, .poll_revents = snd_pcm_generic_poll_revents, .may_wait_for_avail_min = snd_pcm_generic_may_wait_for_avail_min, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_hw.c b/src/pcm/pcm_hw.c index 91370a8..8ee1d69 100644 --- a/src/pcm/pcm_hw.c +++ b/src/pcm/pcm_hw.c @@ -1481,6 +1481,7 @@ static const snd_pcm_fast_ops_t snd_pcm_hw_fast_ops = { .poll_descriptors = NULL, .poll_descriptors_count = NULL, .poll_revents = NULL, + .mmap_begin = NULL, }; static const snd_pcm_fast_ops_t snd_pcm_hw_fast_ops_timer = { @@ -1512,6 +1513,7 @@ static const snd_pcm_fast_ops_t snd_pcm_hw_fast_ops_timer = { .poll_descriptors = snd_pcm_hw_poll_descriptors, .poll_descriptors_count = snd_pcm_hw_poll_descriptors_count, .poll_revents = snd_pcm_hw_poll_revents, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_ioplug.c b/src/pcm/pcm_ioplug.c index a437ca3..3e19499 100644 --- a/src/pcm/pcm_ioplug.c +++ b/src/pcm/pcm_ioplug.c @@ -940,6 +940,7 @@ static const snd_pcm_fast_ops_t snd_pcm_ioplug_fast_ops = { .poll_descriptors_count = snd_pcm_ioplug_poll_descriptors_count, .poll_descriptors = snd_pcm_ioplug_poll_descriptors, .poll_revents = snd_pcm_ioplug_poll_revents, + .mmap_begin = NULL, }; #endif /* !DOC_HIDDEN */ diff --git a/src/pcm/pcm_local.h b/src/pcm/pcm_local.h index d52229d..d5726eb 100644 --- a/src/pcm/pcm_local.h +++ b/src/pcm/pcm_local.h @@ -184,6 +184,7 @@ typedef struct { int (*poll_descriptors)(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space); /* locked */ int (*poll_revents)(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents); /* locked */ int (*may_wait_for_avail_min)(snd_pcm_t *pcm, snd_pcm_uframes_t avail); + int (*mmap_begin)(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas, snd_pcm_uframes_t *offset, snd_pcm_uframes_t *frames); /* locked */ } snd_pcm_fast_ops_t; struct _snd_pcm { diff --git a/src/pcm/pcm_meter.c b/src/pcm/pcm_meter.c index 20b4187..28bb578 100644 --- a/src/pcm/pcm_meter.c +++ b/src/pcm/pcm_meter.c @@ -548,6 +548,7 @@ static const snd_pcm_fast_ops_t snd_pcm_meter_fast_ops = { .poll_descriptors = snd_pcm_generic_poll_descriptors, .poll_revents = snd_pcm_generic_poll_revents, .may_wait_for_avail_min = snd_pcm_generic_may_wait_for_avail_min, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_mmap_emul.c b/src/pcm/pcm_mmap_emul.c index 009cebb..6fa5fe6 100644 --- a/src/pcm/pcm_mmap_emul.c +++ b/src/pcm/pcm_mmap_emul.c @@ -401,6 +401,7 @@ static const snd_pcm_fast_ops_t snd_pcm_mmap_emul_fast_ops = { .poll_descriptors_count = snd_pcm_generic_poll_descriptors_count, .poll_revents = snd_pcm_generic_poll_revents, .may_wait_for_avail_min = snd_pcm_generic_may_wait_for_avail_min, + .mmap_begin = NULL, }; #ifndef DOC_HIDDEN diff --git a/src/pcm/pcm_multi.c b/src/pcm/pcm_multi.c index 53c414d..069d224 100644 --- a/src/pcm/pcm_multi.c +++ b/src/pcm/pcm_multi.c @@ -1042,6 +1042,7 @@ static const snd_pcm_fast_ops_t snd_pcm_multi_fast_ops = { .poll_descriptors = snd_pcm_multi_poll_descriptors, .poll_revents = snd_pcm_multi_poll_revents, .may_wait_for_avail_min = snd_pcm_multi_may_wait_for_avail_min, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_null.c b/src/pcm/pcm_null.c index 1d81548..e6fa049 100644 --- a/src/pcm/pcm_null.c +++ b/src/pcm/pcm_null.c @@ -361,6 +361,7 @@ static const snd_pcm_fast_ops_t snd_pcm_null_fast_ops = { .avail_update = snd_pcm_null_avail_update, .mmap_commit = snd_pcm_null_mmap_commit, .htimestamp = snd_pcm_generic_real_htimestamp, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_plugin.c b/src/pcm/pcm_plugin.c index ea60eb9..0714d2c 100644 --- a/src/pcm/pcm_plugin.c +++ b/src/pcm/pcm_plugin.c @@ -646,6 +646,7 @@ const snd_pcm_fast_ops_t snd_pcm_plugin_fast_ops = { .poll_descriptors = snd_pcm_generic_poll_descriptors, .poll_revents = snd_pcm_generic_poll_revents, .may_wait_for_avail_min = snd_pcm_plugin_may_wait_for_avail_min, + .mmap_begin = NULL, }; #endif diff --git a/src/pcm/pcm_rate.c b/src/pcm/pcm_rate.c index 5dc8a92..f29739b 100644 --- a/src/pcm/pcm_rate.c +++ b/src/pcm/pcm_rate.c @@ -1217,6 +1217,7 @@ static const snd_pcm_fast_ops_t snd_pcm_rate_fast_ops = { .poll_descriptors = snd_pcm_generic_poll_descriptors, .poll_revents = snd_pcm_rate_poll_revents, .may_wait_for_avail_min = snd_pcm_plugin_may_wait_for_avail_min, + .mmap_begin = NULL, }; static const snd_pcm_ops_t snd_pcm_rate_ops = { diff --git a/src/pcm/pcm_share.c b/src/pcm/pcm_share.c index 5a540c4..b803a82 100644 --- a/src/pcm/pcm_share.c +++ b/src/pcm/pcm_share.c @@ -1346,6 +1346,7 @@ static const snd_pcm_fast_ops_t snd_pcm_share_fast_ops = { .avail_update = snd_pcm_share_avail_update, .htimestamp = snd_pcm_share_htimestamp, .mmap_commit = snd_pcm_share_mmap_commit, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_shm.c b/src/pcm/pcm_shm.c index 26a27a5..a18720f 100644 --- a/src/pcm/pcm_shm.c +++ b/src/pcm/pcm_shm.c @@ -629,6 +629,7 @@ static const snd_pcm_fast_ops_t snd_pcm_shm_fast_ops = { .avail_update = snd_pcm_shm_avail_update, .mmap_commit = snd_pcm_shm_mmap_commit, .htimestamp = snd_pcm_shm_htimestamp, + .mmap_begin = NULL, }; static int make_local_socket(const char *filename) -- 2.7.4

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[PATCH - alsa-lib 2/4] pcm_file: use snd_pcm_file_areas_read_infile for readi
by Adam Miartus 21 May '19

21 May '19

use previously introduced helper function, this commit unifies behavior of readi and readn corner case behavior of readi is changed by this commit, previously, in case 0 bytes were red from file (EOF), frames = 0 was returned, signaling api user as if no data was red from slave, after the patch, amount of frames red from slave with data red from slave stored in buffer is returned when EOF is reached Signed-off-by: Adam Miartus <amiartus(a)de.adit-jv.com> Reviewed-by: Timo Wischer <twischer(a)de.adit-jv.com> diff --git a/src/pcm/pcm_file.c b/src/pcm/pcm_file.c index 3c68265..dcaa41d 100644 --- a/src/pcm/pcm_file.c +++ b/src/pcm/pcm_file.c @@ -579,22 +579,21 @@ static snd_pcm_sframes_t snd_pcm_file_readi(snd_pcm_t *pcm, void *buffer, snd_pc { snd_pcm_file_t *file = pcm->private_data; snd_pcm_channel_area_t areas[pcm->channels]; - snd_pcm_sframes_t n; + snd_pcm_sframes_t frames; + + __snd_pcm_lock(pcm); + + frames = _snd_pcm_readi(file->gen.slave, buffer, size); + if (frames <= 0) + return frames; - n = _snd_pcm_readi(file->gen.slave, buffer, size); - if (n <= 0) - return n; - if (file->ifd >= 0) { - __snd_pcm_lock(pcm); - n = read(file->ifd, buffer, n * pcm->frame_bits / 8); - __snd_pcm_unlock(pcm); - if (n < 0) - return n; - n = n * 8 / pcm->frame_bits; - } snd_pcm_areas_from_buf(pcm, areas, buffer); - snd_pcm_file_add_frames(pcm, areas, 0, n); - return n; + snd_pcm_file_areas_read_infile(pcm, areas, 0, frames); + snd_pcm_file_add_frames(pcm, areas, 0, frames); + + __snd_pcm_unlock(pcm); + + return frames; } /* locking */ -- 2.7.4

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[PATCH - alsa-lib 1/4] pcm_file: add support for infile reading in non interleaved mode
by Adam Miartus 21 May '19

21 May '19

add helper function to copy input file data to buffer mapped by areas, in case of an error, do not fill the areas, allowing device read buffer to be provided to api caller previously unused rbuf variable is reused for this purpose Signed-off-by: Adam Miartus <amiartus(a)de.adit-jv.com> Reviewed-by: Timo Wischer <twischer(a)de.adit-jv.com> diff --git a/src/pcm/pcm_file.c b/src/pcm/pcm_file.c index 3a19cef..3c68265 100644 --- a/src/pcm/pcm_file.c +++ b/src/pcm/pcm_file.c @@ -77,6 +77,7 @@ typedef struct { snd_pcm_uframes_t appl_ptr; snd_pcm_uframes_t file_ptr_bytes; snd_pcm_uframes_t wbuf_size; + snd_pcm_uframes_t rbuf_size; size_t wbuf_size_bytes; size_t wbuf_used_bytes; char *wbuf; @@ -266,6 +267,39 @@ static int snd_pcm_file_open_output_file(snd_pcm_file_t *file) return 0; } +/* fill areas with data from input file, return bytes red */ +static int snd_pcm_file_areas_read_infile(snd_pcm_t *pcm, + const snd_pcm_channel_area_t *areas, + snd_pcm_uframes_t offset, + snd_pcm_uframes_t frames) +{ + snd_pcm_file_t *file = pcm->private_data; + snd_pcm_channel_area_t areas_if[pcm->channels]; + ssize_t bytes; + + if (file->ifd < 0) + return -EBADF; + + if (file->rbuf == NULL) + return -ENOMEM; + + if (file->rbuf_size < frames) { + SYSERR("requested more frames than pcm buffer"); + return -ENOMEM; + } + + bytes = read(file->ifd, file->rbuf, snd_pcm_frames_to_bytes(pcm, frames)); + if (bytes < 0) { + SYSERR("read from file failed, error: %d", bytes); + return bytes; + } + + snd_pcm_areas_from_buf(pcm, areas_if, file->rbuf); + snd_pcm_areas_copy(areas, offset, areas_if, 0, pcm->channels, snd_pcm_bytes_to_frames(pcm, bytes), pcm->format); + + return bytes; +} + static void setup_wav_header(snd_pcm_t *pcm, struct wav_fmt *fmt) { fmt->fmt = TO_LE16(0x01); @@ -568,19 +602,19 @@ static snd_pcm_sframes_t snd_pcm_file_readn(snd_pcm_t *pcm, void **bufs, snd_pcm { snd_pcm_file_t *file = pcm->private_data; snd_pcm_channel_area_t areas[pcm->channels]; - snd_pcm_sframes_t n; + snd_pcm_sframes_t frames; - if (file->ifd >= 0) { - SNDERR("DEBUG: Noninterleaved read not yet implemented.\n"); - return 0; /* TODO: Noninterleaved read */ - } + __snd_pcm_lock(pcm); + frames = _snd_pcm_readn(file->gen.slave, bufs, size); + if (frames <= 0) + return frames; - n = _snd_pcm_readn(file->gen.slave, bufs, size); - if (n > 0) { - snd_pcm_areas_from_bufs(pcm, areas, bufs); - snd_pcm_file_add_frames(pcm, areas, 0, n); - } - return n; + snd_pcm_areas_from_bufs(pcm, areas, bufs); + snd_pcm_file_areas_read_infile(pcm, areas, 0, frames); + snd_pcm_file_add_frames(pcm, areas, 0, frames); + + __snd_pcm_unlock(pcm); + return frames; } static snd_pcm_sframes_t snd_pcm_file_mmap_commit(snd_pcm_t *pcm, @@ -609,9 +643,11 @@ static int snd_pcm_file_hw_free(snd_pcm_t *pcm) free(file->wbuf); free(file->wbuf_areas); free(file->final_fname); + free(file->rbuf); file->wbuf = NULL; file->wbuf_areas = NULL; file->final_fname = NULL; + file->rbuf = NULL; return snd_pcm_hw_free(file->gen.slave); } @@ -638,6 +674,15 @@ static int snd_pcm_file_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params) snd_pcm_file_hw_free(pcm); return -ENOMEM; } + assert(!file->rbuf); + file->rbuf_size = slave->buffer_size; + file->rbuf_size_bytes = snd_pcm_frames_to_bytes(slave, file->rbuf_size); + file->rbuf_used_bytes = 0; + file->rbuf = malloc(file->rbuf_size_bytes); + if (file->rbuf == NULL) { + snd_pcm_file_hw_free(pcm); + return -ENOMEM; + } file->appl_ptr = file->file_ptr_bytes = 0; for (channel = 0; channel < slave->channels; ++channel) { snd_pcm_channel_area_t *a = &file->wbuf_areas[channel]; -- 2.7.4

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[PATCH - alsa-lib 0/4] Add pcm_file input file support for MMAP
by Adam Miartus 21 May '19

21 May '19

implement overwriting read buffer with input file in case of RW_NONINTERLEAVED and MMAP access modes for alsa file plugin first two patches introduce a helper function for copying data from input file to readi and readn buffers for user. to facilitate this snd_pcm_areas_from_buf and snd_pcm_areas_from_bufs with snd_pcm_areas_copy is used. Previous readi behaviour in corner case of input file EOF is changed (more in patch comment). Patch 3,4 introduce new api callback mmap_begin to ease overwritting mmaped buffer in case of MMAP access. Adam Miartus (4): pcm_file: add support for infile reading in non interleaved mode pcm_file: use snd_pcm_file_areas_read_infile for readi pcm: add mmap_begin callback to snd_pcm_fast_ops_t api pcm_file: add infile read support for mmap mode src/pcm/pcm.c | 6 +++ src/pcm/pcm_dmix.c | 1 + src/pcm/pcm_dshare.c | 1 + src/pcm/pcm_dsnoop.c | 1 + src/pcm/pcm_file.c | 125 ++++++++++++++++++++++++++++++++++++++---------- src/pcm/pcm_generic.h | 1 - src/pcm/pcm_hooks.c | 1 + src/pcm/pcm_hw.c | 2 + src/pcm/pcm_ioplug.c | 1 + src/pcm/pcm_local.h | 1 + src/pcm/pcm_meter.c | 1 + src/pcm/pcm_mmap_emul.c | 1 + src/pcm/pcm_multi.c | 1 + src/pcm/pcm_null.c | 1 + src/pcm/pcm_plugin.c | 1 + src/pcm/pcm_rate.c | 1 + src/pcm/pcm_share.c | 1 + src/pcm/pcm_shm.c | 1 + 18 files changed, 122 insertions(+), 26 deletions(-) -- 2.7.4

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[PATCH - alsa-lib 1/4] pcm_file: add support for infile reading in non interleaved mode
by Adam Miartus 21 May '19

21 May '19

add helper function to copy input file data to buffer mapped by areas, in case of an error, do not fill the areas, allowing device read buffer to be provided to api caller previously unused rbuf variable is reused for this purpose Signed-off-by: Adam Miartus <amiartus(a)de.adit-jv.com> Reviewed-by: Timo Wischer <twischer(a)de.adit-jv.com> diff --git a/src/pcm/pcm_file.c b/src/pcm/pcm_file.c index 3a19cef..3c68265 100644 --- a/src/pcm/pcm_file.c +++ b/src/pcm/pcm_file.c @@ -77,6 +77,7 @@ typedef struct { snd_pcm_uframes_t appl_ptr; snd_pcm_uframes_t file_ptr_bytes; snd_pcm_uframes_t wbuf_size; + snd_pcm_uframes_t rbuf_size; size_t wbuf_size_bytes; size_t wbuf_used_bytes; char *wbuf; @@ -266,6 +267,39 @@ static int snd_pcm_file_open_output_file(snd_pcm_file_t *file) return 0; } +/* fill areas with data from input file, return bytes red */ +static int snd_pcm_file_areas_read_infile(snd_pcm_t *pcm, + const snd_pcm_channel_area_t *areas, + snd_pcm_uframes_t offset, + snd_pcm_uframes_t frames) +{ + snd_pcm_file_t *file = pcm->private_data; + snd_pcm_channel_area_t areas_if[pcm->channels]; + ssize_t bytes; + + if (file->ifd < 0) + return -EBADF; + + if (file->rbuf == NULL) + return -ENOMEM; + + if (file->rbuf_size < frames) { + SYSERR("requested more frames than pcm buffer"); + return -ENOMEM; + } + + bytes = read(file->ifd, file->rbuf, snd_pcm_frames_to_bytes(pcm, frames)); + if (bytes < 0) { + SYSERR("read from file failed, error: %d", bytes); + return bytes; + } + + snd_pcm_areas_from_buf(pcm, areas_if, file->rbuf); + snd_pcm_areas_copy(areas, offset, areas_if, 0, pcm->channels, snd_pcm_bytes_to_frames(pcm, bytes), pcm->format); + + return bytes; +} + static void setup_wav_header(snd_pcm_t *pcm, struct wav_fmt *fmt) { fmt->fmt = TO_LE16(0x01); @@ -568,19 +602,19 @@ static snd_pcm_sframes_t snd_pcm_file_readn(snd_pcm_t *pcm, void **bufs, snd_pcm { snd_pcm_file_t *file = pcm->private_data; snd_pcm_channel_area_t areas[pcm->channels]; - snd_pcm_sframes_t n; + snd_pcm_sframes_t frames; - if (file->ifd >= 0) { - SNDERR("DEBUG: Noninterleaved read not yet implemented.\n"); - return 0; /* TODO: Noninterleaved read */ - } + __snd_pcm_lock(pcm); + frames = _snd_pcm_readn(file->gen.slave, bufs, size); + if (frames <= 0) + return frames; - n = _snd_pcm_readn(file->gen.slave, bufs, size); - if (n > 0) { - snd_pcm_areas_from_bufs(pcm, areas, bufs); - snd_pcm_file_add_frames(pcm, areas, 0, n); - } - return n; + snd_pcm_areas_from_bufs(pcm, areas, bufs); + snd_pcm_file_areas_read_infile(pcm, areas, 0, frames); + snd_pcm_file_add_frames(pcm, areas, 0, frames); + + __snd_pcm_unlock(pcm); + return frames; } static snd_pcm_sframes_t snd_pcm_file_mmap_commit(snd_pcm_t *pcm, @@ -609,9 +643,11 @@ static int snd_pcm_file_hw_free(snd_pcm_t *pcm) free(file->wbuf); free(file->wbuf_areas); free(file->final_fname); + free(file->rbuf); file->wbuf = NULL; file->wbuf_areas = NULL; file->final_fname = NULL; + file->rbuf = NULL; return snd_pcm_hw_free(file->gen.slave); } @@ -638,6 +674,15 @@ static int snd_pcm_file_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params) snd_pcm_file_hw_free(pcm); return -ENOMEM; } + assert(!file->rbuf); + file->rbuf_size = slave->buffer_size; + file->rbuf_size_bytes = snd_pcm_frames_to_bytes(slave, file->rbuf_size); + file->rbuf_used_bytes = 0; + file->rbuf = malloc(file->rbuf_size_bytes); + if (file->rbuf == NULL) { + snd_pcm_file_hw_free(pcm); + return -ENOMEM; + } file->appl_ptr = file->file_ptr_bytes = 0; for (channel = 0; channel < slave->channels; ++channel) { snd_pcm_channel_area_t *a = &file->wbuf_areas[channel]; -- 2.7.4

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[PATCH - alsa-lib 4/4] pcm_file: add infile read support for mmap mode
by Miartus, Adam (Arion Recruitment; ADITG/ESM) 20 May '19

20 May '19

From: Adam Miartus <amiartus(a)de.adit-jv.com> mmap_begin callback is used to copy data from input file to mmaped buffer guard for corner use of api (multiple mmap_begin calls by user) is introduced to check if next continuous buffer was already overwritten buffer is overwritten with input file data only in case of stream capture Signed-off-by: Adam Miartus <amiartus(a)de.adit-jv.com> Reviewed-by: Timo Wischer <twischer(a)de.adit-jv.com> diff --git a/src/pcm/pcm_file.c b/src/pcm/pcm_file.c index c8f4c84..d27586c 100644 --- a/src/pcm/pcm_file.c +++ b/src/pcm/pcm_file.c @@ -88,6 +88,7 @@ typedef struct { size_t buffer_bytes; struct wav_fmt wav_header; size_t filelen; + char ifmmap_overwritten; } snd_pcm_file_t; #if __BYTE_ORDER == __LITTLE_ENDIAN @@ -624,6 +625,8 @@ static snd_pcm_sframes_t snd_pcm_file_mmap_commit(snd_pcm_t *pcm, const snd_pcm_channel_area_t *areas; snd_pcm_sframes_t result; + file->ifmmap_overwritten = 0; + result = snd_pcm_mmap_begin(file->gen.slave, &areas, &ofs, &siz); if (result >= 0) { assert(ofs == offset && siz == size); @@ -634,6 +637,32 @@ static snd_pcm_sframes_t snd_pcm_file_mmap_commit(snd_pcm_t *pcm, return result; } +static int snd_pcm_file_mmap_begin(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas, + snd_pcm_uframes_t *offset, snd_pcm_uframes_t *frames) { + snd_pcm_file_t *file = pcm->private_data; + snd_pcm_channel_area_t areas_if[pcm->channels]; + snd_pcm_uframes_t frames_if; + void *buffer = NULL; + int result; + + result = snd_pcm_mmap_begin(file->gen.slave, areas, offset, frames); + if (result < 0) + return result; + + if (pcm->stream != SND_PCM_STREAM_CAPTURE) + return result; + + /* user may run mmap_begin without mmap_commit multiple times in row */ + if (file->ifmmap_overwritten) + return result; + file->ifmmap_overwritten = 1; + + snd_pcm_file_areas_read_infile(pcm, *areas, *offset, *frames); + + return result; +} + static int snd_pcm_file_hw_free(snd_pcm_t *pcm) { snd_pcm_file_t *file = pcm->private_data; @@ -660,6 +689,7 @@ static int snd_pcm_file_hw_params(snd_pcm_t *pcm, snd_pcm_hw_params_t * params) file->wbuf_size = slave->buffer_size * 2; file->wbuf_size_bytes = snd_pcm_frames_to_bytes(slave, file->wbuf_size); file->wbuf_used_bytes = 0; + file->ifmmap_overwritten = 0; assert(!file->wbuf); file->wbuf = malloc(file->wbuf_size_bytes); if (file->wbuf == NULL) { @@ -771,7 +801,7 @@ static const snd_pcm_fast_ops_t snd_pcm_file_fast_ops = { .poll_descriptors = snd_pcm_generic_poll_descriptors, .poll_revents = snd_pcm_generic_poll_revents, .htimestamp = snd_pcm_generic_htimestamp, - .mmap_begin = NULL, + .mmap_begin = snd_pcm_file_mmap_begin, }; /** -- 2.7.4

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[PATCH - alsa-lib 3/4] pcm: add mmap_begin callback to snd_pcm_fast_ops_t api
by Miartus, Adam (Arion Recruitment; ADITG/ESM) 20 May '19

20 May '19

From: Adam Miartus <amiartus(a)de.adit-jv.com> main motivation for adding the callback is to use it to enable operation on mmaped buffer before user access for pcm_file plugin support for MMAP read access with masking by data from input file is not implemented for pcm_file plugin, by adding this callback implementing such feature can be done by rewriting next continuous portion of buffer on each mmap_begin call plugins like softvol use pcm_plugin interface and overwrite the buffer by looping around it in avail_update callback, this patch hopes to simplify the task by adding new api callback, removing the need for rewriting pcm_file (to use pcm_plugin callbacks) and careful checking when looping around whole mmaped buffer Signed-off-by: Adam Miartus <amiartus(a)de.adit-jv.com> Reviewed-by: Timo Wischer <twischer(a)de.adit-jv.com> diff --git a/src/pcm/pcm.c b/src/pcm/pcm.c index 3a71d79..323926e 100644 --- a/src/pcm/pcm.c +++ b/src/pcm/pcm.c @@ -7129,7 +7129,13 @@ int __snd_pcm_mmap_begin(snd_pcm_t *pcm, const snd_pcm_channel_area_t **areas, snd_pcm_uframes_t f; snd_pcm_uframes_t avail; const snd_pcm_channel_area_t *xareas; + assert(pcm && areas && offset && frames); + + if (pcm->fast_ops->mmap_begin) + return pcm->fast_ops->mmap_begin(pcm->fast_op_arg, areas, offset, +frames); + + /* fallback for plugins that do not specify new callback */ xareas = snd_pcm_mmap_areas(pcm); if (xareas == NULL) return -EBADFD; diff --git a/src/pcm/pcm_dmix.c b/src/pcm/pcm_dmix.c index 274726e..96049e0 100644 --- a/src/pcm/pcm_dmix.c +++ b/src/pcm/pcm_dmix.c @@ -990,6 +990,7 @@ static const snd_pcm_fast_ops_t snd_pcm_dmix_fast_ops = { .poll_descriptors = snd_pcm_direct_poll_descriptors, .poll_descriptors_count = NULL, .poll_revents = snd_pcm_dmix_poll_revents, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_dshare.c b/src/pcm/pcm_dshare.c index b75809c..328ef83 100644 --- a/src/pcm/pcm_dshare.c +++ b/src/pcm/pcm_dshare.c @@ -667,6 +667,7 @@ static const snd_pcm_fast_ops_t snd_pcm_dshare_fast_ops = { .poll_descriptors = snd_pcm_direct_poll_descriptors, .poll_descriptors_count = NULL, .poll_revents = snd_pcm_direct_poll_revents, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_dsnoop.c b/src/pcm/pcm_dsnoop.c index 58b1e53..5b9d9f5 100644 --- a/src/pcm/pcm_dsnoop.c +++ b/src/pcm/pcm_dsnoop.c @@ -544,6 +544,7 @@ static const snd_pcm_fast_ops_t snd_pcm_dsnoop_fast_ops = { .poll_descriptors = snd_pcm_direct_poll_descriptors, .poll_descriptors_count = NULL, .poll_revents = snd_pcm_direct_poll_revents, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_file.c b/src/pcm/pcm_file.c index 29ab2fb..c8f4c84 100644 --- a/src/pcm/pcm_file.c +++ b/src/pcm/pcm_file.c @@ -771,6 +771,7 @@ static const snd_pcm_fast_ops_t snd_pcm_file_fast_ops = { .poll_descriptors = snd_pcm_generic_poll_descriptors, .poll_revents = snd_pcm_generic_poll_revents, .htimestamp = snd_pcm_generic_htimestamp, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_generic.h b/src/pcm/pcm_generic.h index dfbe21a..683e60b 100644 --- a/src/pcm/pcm_generic.h +++ b/src/pcm/pcm_generic.h @@ -161,4 +161,3 @@ snd_pcm_chmap_query_t **snd_pcm_generic_query_chmaps(snd_pcm_t *pcm); snd_pcm_chmap_t *snd_pcm_generic_get_chmap(snd_pcm_t *pcm); int snd_pcm_generic_set_chmap(snd_pcm_t *pcm, const snd_pcm_chmap_t *map); int snd_pcm_generic_may_wait_for_avail_min(snd_pcm_t *pcm, snd_pcm_uframes_t avail); - diff --git a/src/pcm/pcm_hooks.c b/src/pcm/pcm_hooks.c index 4416d36..14396fa 100644 --- a/src/pcm/pcm_hooks.c +++ b/src/pcm/pcm_hooks.c @@ -200,6 +200,7 @@ static const snd_pcm_fast_ops_t snd_pcm_hooks_fast_ops = { .poll_descriptors = snd_pcm_generic_poll_descriptors, .poll_revents = snd_pcm_generic_poll_revents, .may_wait_for_avail_min = snd_pcm_generic_may_wait_for_avail_min, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_hw.c b/src/pcm/pcm_hw.c index 91370a8..8ee1d69 100644 --- a/src/pcm/pcm_hw.c +++ b/src/pcm/pcm_hw.c @@ -1481,6 +1481,7 @@ static const snd_pcm_fast_ops_t snd_pcm_hw_fast_ops = { .poll_descriptors = NULL, .poll_descriptors_count = NULL, .poll_revents = NULL, + .mmap_begin = NULL, }; static const snd_pcm_fast_ops_t snd_pcm_hw_fast_ops_timer = { @@ -1512,6 +1513,7 @@ static const snd_pcm_fast_ops_t snd_pcm_hw_fast_ops_timer = { .poll_descriptors = snd_pcm_hw_poll_descriptors, .poll_descriptors_count = snd_pcm_hw_poll_descriptors_count, .poll_revents = snd_pcm_hw_poll_revents, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_ioplug.c b/src/pcm/pcm_ioplug.c index a437ca3..3e19499 100644 --- a/src/pcm/pcm_ioplug.c +++ b/src/pcm/pcm_ioplug.c @@ -940,6 +940,7 @@ static const snd_pcm_fast_ops_t snd_pcm_ioplug_fast_ops = { .poll_descriptors_count = snd_pcm_ioplug_poll_descriptors_count, .poll_descriptors = snd_pcm_ioplug_poll_descriptors, .poll_revents = snd_pcm_ioplug_poll_revents, + .mmap_begin = NULL, }; #endif /* !DOC_HIDDEN */ diff --git a/src/pcm/pcm_local.h b/src/pcm/pcm_local.h index d52229d..d5726eb 100644 --- a/src/pcm/pcm_local.h +++ b/src/pcm/pcm_local.h @@ -184,6 +184,7 @@ typedef struct { int (*poll_descriptors)(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int space); /* locked */ int (*poll_revents)(snd_pcm_t *pcm, struct pollfd *pfds, unsigned int nfds, unsigned short *revents); /* locked */ int (*may_wait_for_avail_min)(snd_pcm_t *pcm, snd_pcm_uframes_t avail); + int (*mmap_begin)(snd_pcm_t *pcm, const snd_pcm_channel_area_t +**areas, snd_pcm_uframes_t *offset, snd_pcm_uframes_t *frames); /* +locked */ } snd_pcm_fast_ops_t; struct _snd_pcm { diff --git a/src/pcm/pcm_meter.c b/src/pcm/pcm_meter.c index 20b4187..28bb578 100644 --- a/src/pcm/pcm_meter.c +++ b/src/pcm/pcm_meter.c @@ -548,6 +548,7 @@ static const snd_pcm_fast_ops_t snd_pcm_meter_fast_ops = { .poll_descriptors = snd_pcm_generic_poll_descriptors, .poll_revents = snd_pcm_generic_poll_revents, .may_wait_for_avail_min = snd_pcm_generic_may_wait_for_avail_min, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_mmap_emul.c b/src/pcm/pcm_mmap_emul.c index 009cebb..6fa5fe6 100644 --- a/src/pcm/pcm_mmap_emul.c +++ b/src/pcm/pcm_mmap_emul.c @@ -401,6 +401,7 @@ static const snd_pcm_fast_ops_t snd_pcm_mmap_emul_fast_ops = { .poll_descriptors_count = snd_pcm_generic_poll_descriptors_count, .poll_revents = snd_pcm_generic_poll_revents, .may_wait_for_avail_min = snd_pcm_generic_may_wait_for_avail_min, + .mmap_begin = NULL, }; #ifndef DOC_HIDDEN diff --git a/src/pcm/pcm_multi.c b/src/pcm/pcm_multi.c index 53c414d..069d224 100644 --- a/src/pcm/pcm_multi.c +++ b/src/pcm/pcm_multi.c @@ -1042,6 +1042,7 @@ static const snd_pcm_fast_ops_t snd_pcm_multi_fast_ops = { .poll_descriptors = snd_pcm_multi_poll_descriptors, .poll_revents = snd_pcm_multi_poll_revents, .may_wait_for_avail_min = snd_pcm_multi_may_wait_for_avail_min, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_null.c b/src/pcm/pcm_null.c index 1d81548..e6fa049 100644 --- a/src/pcm/pcm_null.c +++ b/src/pcm/pcm_null.c @@ -361,6 +361,7 @@ static const snd_pcm_fast_ops_t snd_pcm_null_fast_ops = { .avail_update = snd_pcm_null_avail_update, .mmap_commit = snd_pcm_null_mmap_commit, .htimestamp = snd_pcm_generic_real_htimestamp, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_plugin.c b/src/pcm/pcm_plugin.c index ea60eb9..0714d2c 100644 --- a/src/pcm/pcm_plugin.c +++ b/src/pcm/pcm_plugin.c @@ -646,6 +646,7 @@ const snd_pcm_fast_ops_t snd_pcm_plugin_fast_ops = { .poll_descriptors = snd_pcm_generic_poll_descriptors, .poll_revents = snd_pcm_generic_poll_revents, .may_wait_for_avail_min = snd_pcm_plugin_may_wait_for_avail_min, + .mmap_begin = NULL, }; #endif diff --git a/src/pcm/pcm_rate.c b/src/pcm/pcm_rate.c index 5dc8a92..f29739b 100644 --- a/src/pcm/pcm_rate.c +++ b/src/pcm/pcm_rate.c @@ -1217,6 +1217,7 @@ static const snd_pcm_fast_ops_t snd_pcm_rate_fast_ops = { .poll_descriptors = snd_pcm_generic_poll_descriptors, .poll_revents = snd_pcm_rate_poll_revents, .may_wait_for_avail_min = snd_pcm_plugin_may_wait_for_avail_min, + .mmap_begin = NULL, }; static const snd_pcm_ops_t snd_pcm_rate_ops = { diff --git a/src/pcm/pcm_share.c b/src/pcm/pcm_share.c index 5a540c4..b803a82 100644 --- a/src/pcm/pcm_share.c +++ b/src/pcm/pcm_share.c @@ -1346,6 +1346,7 @@ static const snd_pcm_fast_ops_t snd_pcm_share_fast_ops = { .avail_update = snd_pcm_share_avail_update, .htimestamp = snd_pcm_share_htimestamp, .mmap_commit = snd_pcm_share_mmap_commit, + .mmap_begin = NULL, }; /** diff --git a/src/pcm/pcm_shm.c b/src/pcm/pcm_shm.c index 26a27a5..a18720f 100644 --- a/src/pcm/pcm_shm.c +++ b/src/pcm/pcm_shm.c @@ -629,6 +629,7 @@ static const snd_pcm_fast_ops_t snd_pcm_shm_fast_ops = { .avail_update = snd_pcm_shm_avail_update, .mmap_commit = snd_pcm_shm_mmap_commit, .htimestamp = snd_pcm_shm_htimestamp, + .mmap_begin = NULL, }; static int make_local_socket(const char *filename) -- 2.7.4

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