100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
#include "device/buffer.h"
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#include "device/buffer_list.h"
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#include "device/device.h"
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#include "opts/log.h"
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#include "opts/fourcc.h"
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buffer_list_t *buffer_list_open(const char *name, struct device_s *dev, const char *path, buffer_format_t fmt, bool do_capture, bool do_mmap)
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{
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buffer_list_t *buf_list = calloc(1, sizeof(buffer_list_t));
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buf_list->dev = dev;
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buf_list->name = strdup(name);
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if (path) {
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buf_list->path = strdup(path);
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}
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buf_list->do_capture = do_capture;
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buf_list->do_mmap = do_mmap;
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buf_list->fmt = fmt;
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int got_bufs = dev->hw->buffer_list_open(buf_list);
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if (got_bufs <= 0) {
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goto error;
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}
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LOG_INFO(
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buf_list,
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"Using: %ux%u/%s, bytesperline=%d",
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buf_list->fmt.width,
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buf_list->fmt.height,
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fourcc_to_string(buf_list->fmt.format).buf,
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buf_list->fmt.bytesperline
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);
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buf_list->bufs = calloc(got_bufs, sizeof(buffer_t*));
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buf_list->fmt.nbufs = got_bufs;
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buf_list->nbufs = got_bufs;
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for (unsigned i = 0; i < buf_list->nbufs; i++) {
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char name[64];
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sprintf(name, "%s:buf%d", buf_list->name, i);
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buffer_t *buf = buffer_open(name, buf_list, i);
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if (!buf) {
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LOG_ERROR(buf_list, "Cannot open buffer: %u", i);
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goto error;
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}
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buf_list->bufs[i] = buf;
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}
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LOG_DEBUG(buf_list, "Opened %u buffers", buf_list->nbufs);
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return buf_list;
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error:
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buffer_list_close(buf_list);
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return NULL;
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}
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void buffer_list_close(buffer_list_t *buf_list)
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{
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if (!buf_list) {
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return;
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}
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if (buf_list->bufs) {
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for (int i = 0; i < buf_list->nbufs; i++) {
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buffer_close(buf_list->bufs[i]);
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}
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free(buf_list->bufs);
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buf_list->bufs = NULL;
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buf_list->nbufs = 0;
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}
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buf_list->dev->hw->buffer_list_close(buf_list);
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free(buf_list->name);
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free(buf_list);
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}
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int buffer_list_set_stream(buffer_list_t *buf_list, bool do_on)
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{
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if (!buf_list) {
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return -1;
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}
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if (buf_list->streaming == do_on) {
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return 0;
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}
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if (buf_list->dev->hw->buffer_list_set_stream(buf_list, do_on) < 0) {
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goto error;
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}
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buf_list->streaming = do_on;
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int enqueued = buffer_list_count_enqueued(buf_list);
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LOG_VERBOSE(buf_list, "Streaming %s... Was %d of %d enqueud", do_on ? "started" : "stopped", enqueued, buf_list->nbufs);
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return 0;
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error:
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return -1;
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}
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