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pipewire-v4l2: support choice sizes

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Add support for `SPA_CHOICE_{None,Enum,Step,Range}`. They can all
be naturally mapped to `v4l2_frmsizeenum`.
This commit is contained in:
Barnabás Pőcze 2025-08-15 18:33:17 +02:00 • committed by Wim Taymans
parent cec0ab322e
commit 91b764faac
1 changed files with 85 additions and 12 deletions
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97
pipewire-v4l2/src/pipewire-v4l2.c
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@ -1400,7 +1400,6 @@ static int vidioc_enum_framesizes(struct file *file, struct v4l2_frmsizeenum *ar
spa_list_for_each(p, &g->param_list, link) {
const struct format_info *fi;
uint32_t media_type, media_subtype, format;
struct spa_rectangle size;
if (p->id != SPA_PARAM_EnumFormat || p->param == NULL)
continue;
@ -1424,22 +1423,96 @@ static int vidioc_enum_framesizes(struct file *file, struct v4l2_frmsizeenum *ar
if (fi->fourcc != arg->pixel_format)
continue;
if (spa_pod_parse_object(p->param,
SPA_TYPE_OBJECT_Format, NULL,
SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&size)) < 0)
const struct spa_pod_prop *size_prop = spa_pod_find_prop(p->param, NULL, SPA_FORMAT_VIDEO_size);
if (!size_prop)
continue;
arg->type = V4L2_FRMSIZE_TYPE_DISCRETE;
arg->discrete.width = size.width;
arg->discrete.height = size.height;
uint32_t n_sizes, choice;
const struct spa_pod *size_pods = spa_pod_get_values(&size_prop->value, &n_sizes, &choice);
if (!size_pods || n_sizes <= 0)
continue;
const struct spa_rectangle *sizes = SPA_POD_BODY_CONST(size_pods);
if (size_pods->type != SPA_TYPE_Rectangle || size_pods->size != sizeof(*sizes))
continue;
switch (choice) {
case SPA_CHOICE_Enum:
n_sizes -= 1;
sizes += 1;
SPA_FALLTHROUGH;
case SPA_CHOICE_None:
arg->type = V4L2_FRMSIZE_TYPE_DISCRETE;
for (size_t i = 0; i < n_sizes; i++, count++) {
arg->discrete.width = sizes[i].width;
arg->discrete.height = sizes[i].height;
pw_log_debug("count:%u %.4s %ux%u", count, (char*)&fi->fourcc,
arg->discrete.width, arg->discrete.height);
if (count == arg->index) {
found = true;
break;
}
}
pw_log_debug("count:%d %.4s %dx%d", count, (char*)&fi->fourcc,
size.width, size.height);
if (count == arg->index) {
found = true;
break;
case SPA_CHOICE_Range:
if (n_sizes < 3)
continue;
arg->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
arg->stepwise.min_width = sizes[1].width;
arg->stepwise.min_height = sizes[1].height;
arg->stepwise.max_width = sizes[2].width;
arg->stepwise.max_height = sizes[2].height;
arg->stepwise.step_width = arg->stepwise.step_height = 1;
pw_log_debug("count:%u %.4s (%ux%u)-(%ux%u)", count, (char*)&fi->fourcc,
arg->stepwise.min_width, arg->stepwise.min_height,
arg->stepwise.max_width, arg->stepwise.max_height);
if (count == arg->index) {
found = true;
break;
}
count++;
break;
case SPA_CHOICE_Step:
if (n_sizes < 4)
continue;
arg->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
arg->stepwise.min_width = sizes[1].width;
arg->stepwise.min_height = sizes[1].height;
arg->stepwise.max_width = sizes[2].width;
arg->stepwise.max_height = sizes[2].height;
arg->stepwise.step_width = sizes[3].width;
arg->stepwise.step_height = sizes[3].height;
pw_log_debug("count:%u %.4s (%ux%u)-(%ux%u)/(+%u,%u)", count, (char*)&fi->fourcc,
arg->stepwise.min_width, arg->stepwise.min_height,
arg->stepwise.min_width, arg->stepwise.min_height,
arg->stepwise.step_width, arg->stepwise.step_height);
if (count == arg->index) {
found = true;
break;
}
count++;
break;
default:
continue;
}
count++;
if (found)
break;
}
pw_thread_loop_unlock(file->loop);