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alsa: fix area pointers

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We should use the first and step fields to get to the first byte in the
area.

See #3069
This commit is contained in:
Wim Taymans 2023-04-14 17:52:26 +02:00
parent 916f1cdfbf
commit ea7781d7d0
1 changed files with 3 additions and 3 deletions
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6
spa/plugins/alsa/alsa-pcm.c
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@ -2179,7 +2179,7 @@ again:
if (SPA_LIKELY(state->use_mmap)) {
for (i = 0; i < b->buf->n_datas; i++) {
spa_memcpy(SPA_PTROFF(my_areas[i].addr, off * frame_size, void),
spa_memcpy(snd_pcm_channel_area_addr(&my_areas[i], off),
SPA_PTROFF(d[i].data, offs, void), n_bytes);
}
} else {
@ -2290,11 +2290,11 @@ push_frames(struct state *state,
for (i = 0; i < b->buf->n_datas; i++) {
spa_memcpy(d[i].data,
SPA_PTROFF(my_areas[i].addr, offset * frame_size, void),
snd_pcm_channel_area_addr(&my_areas[i], offset),
l0);
if (SPA_UNLIKELY(l1 > 0))
spa_memcpy(SPA_PTROFF(d[i].data, l0, void),
my_areas[i].addr,
snd_pcm_channel_area_addr(&my_areas[i], 0),
l1);
d[i].chunk->offset = 0;
d[i].chunk->size = n_bytes;