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Implement starving architecture of capture buffers

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This commit is contained in:
Kamil Trzcinski 2022-04-06 17:05:14 +02:00
parent a387f4d70c
commit 19ba30d4ea
2 changed files with 8 additions and 7 deletions
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5
hw/buffer.c
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@ -54,11 +54,6 @@ buffer_t *buffer_open(const char *name, buffer_list_t *buf_list, int index) {
buf->dma_fd = v4l2_exp.fd;
}
if (buf_list->do_capture && buf_list->do_mmap) {
buf->used = 0;
buffer_consumed(buf, "capture-enqueue");
}
return buf;
error:

10
hw/links.c
View File

@ -65,11 +65,18 @@ int _build_fds(link_t *all_links, struct pollfd *fds, link_t **links, buffer_lis
source->device->output_device->paused = paused;
}
if (!source->device->paused && source->do_mmap) {
buffer_t *buf;
while (buf = buffer_list_find_slot(source)) {
buffer_consumed(buf, "enqueued");
}
}
int count_enqueued = buffer_list_count_enqueued(source);
fds[n].fd = source->device->fd;
fds[n].events = POLLHUP;
if (!source->device->paused && count_enqueued > 0)
if (count_enqueued > 0)
fds[n].events |= POLLIN;
fds[n].revents = 0;
buf_lists[n] = source;
@ -102,7 +109,6 @@ int links_enqueue_from_source(buffer_list_t *buf_list, link_t *link)
link->callbacks.on_buffer(buf);
}
buffer_consumed(buf, "link-from-source");
return 0;
error: