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Added support for Motion JPEG pipewire camera capture

This commit is contained in:
Sam Lantinga 2025-02-22 00:07:33 -08:00
parent 5c214e5e9c
commit 75bbcbf87b
1 changed files with 66 additions and 14 deletions
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80
src/camera/pipewire/SDL_camera_pipewire.c
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@ -374,10 +374,8 @@ static struct sdl_video_format {
{ SDL_PIXELFORMAT_YUY2, SDL_COLORSPACE_BT709_LIMITED, SPA_VIDEO_FORMAT_YUY2 },
{ SDL_PIXELFORMAT_UYVY, SDL_COLORSPACE_BT709_LIMITED, SPA_VIDEO_FORMAT_UYVY },
{ SDL_PIXELFORMAT_YVYU, SDL_COLORSPACE_BT709_LIMITED, SPA_VIDEO_FORMAT_YVYU },
#if SDL_VERSION_ATLEAST(2,0,4)
{ SDL_PIXELFORMAT_NV12, SDL_COLORSPACE_BT709_LIMITED, SPA_VIDEO_FORMAT_NV12 },
{ SDL_PIXELFORMAT_NV21, SDL_COLORSPACE_BT709_LIMITED, SPA_VIDEO_FORMAT_NV21 },
#endif
{ SDL_PIXELFORMAT_NV21, SDL_COLORSPACE_BT709_LIMITED, SPA_VIDEO_FORMAT_NV21 }
};
static uint32_t sdl_format_to_id(SDL_PixelFormat format)
@ -500,14 +498,24 @@ static bool PIPEWIRECAMERA_OpenDevice(SDL_Camera *device, const SDL_CameraSpec *
&device->hidden->stream_listener,
&stream_events, device);
params[n_params++] = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat,
SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video),
SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw),
SPA_FORMAT_VIDEO_format, SPA_POD_Id(sdl_format_to_id(spec->format)),
SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&SPA_RECTANGLE(spec->width, spec->height)),
SPA_FORMAT_VIDEO_framerate,
SPA_POD_Fraction(&SPA_FRACTION(spec->framerate_numerator, spec->framerate_denominator)));
if (spec->format == SDL_PIXELFORMAT_MJPG) {
params[n_params++] = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat,
SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video),
SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_mjpg),
SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&SPA_RECTANGLE(spec->width, spec->height)),
SPA_FORMAT_VIDEO_framerate,
SPA_POD_Fraction(&SPA_FRACTION(spec->framerate_numerator, spec->framerate_denominator)));
} else {
params[n_params++] = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat,
SPA_FORMAT_mediaType, SPA_POD_Id(SPA_MEDIA_TYPE_video),
SPA_FORMAT_mediaSubtype, SPA_POD_Id(SPA_MEDIA_SUBTYPE_raw),
SPA_FORMAT_VIDEO_format, SPA_POD_Id(sdl_format_to_id(spec->format)),
SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&SPA_RECTANGLE(spec->width, spec->height)),
SPA_FORMAT_VIDEO_framerate,
SPA_POD_Fraction(&SPA_FRACTION(spec->framerate_numerator, spec->framerate_denominator)));
}
if ((res = PIPEWIRE_pw_stream_connect(device->hidden->stream,
PW_DIRECTION_INPUT,
@ -573,7 +581,11 @@ static SDL_CameraFrameResult PIPEWIRECAMERA_AcquireFrame(SDL_Camera *device, SDL
*timestampNS = SDL_GetTicksNS();
#endif
frame->pixels = b->buffer->datas[0].data;
frame->pitch = b->buffer->datas[0].chunk->stride;
if (frame->format == SDL_PIXELFORMAT_MJPG) {
frame->pitch = b->buffer->datas[0].chunk->size;
} else {
frame->pitch = b->buffer->datas[0].chunk->stride;
}
PIPEWIRE_pw_thread_loop_unlock(hotplug.loop);
@ -657,7 +669,7 @@ static void collect_size(CameraFormatAddData *data, struct param *p, SDL_PixelFo
}
}
static void collect_format(CameraFormatAddData *data, struct param *p)
static void collect_raw(CameraFormatAddData *data, struct param *p)
{
const struct spa_pod_prop *prop;
SDL_PixelFormat sdlfmt;
@ -688,7 +700,47 @@ static void collect_format(CameraFormatAddData *data, struct param *p)
}
break;
default:
SDL_Log("CAMERA: unimplemented choice:%d", choice);
SDL_Log("CAMERA: unimplemented choice: %d", choice);
break;
}
}
static void collect_format(CameraFormatAddData *data, struct param *p)
{
const struct spa_pod_prop *prop;
struct spa_pod * values;
uint32_t i, n_vals, choice, *ids;
prop = spa_pod_find_prop(p->param, NULL, SPA_FORMAT_mediaSubtype);
if (prop == NULL)
return;
values = spa_pod_get_values(&prop->value, &n_vals, &choice);
if (values->type != SPA_TYPE_Id || n_vals == 0)
return;
ids = SPA_POD_BODY(values);
switch (choice) {
case SPA_CHOICE_None:
n_vals = 1;
SDL_FALLTHROUGH;
case SPA_CHOICE_Enum:
for (i = 0; i < n_vals; i++) {
switch (ids[i]) {
case SPA_MEDIA_SUBTYPE_raw:
collect_raw(data, p);
break;
case SPA_MEDIA_SUBTYPE_mjpg:
collect_size(data, p, SDL_PIXELFORMAT_MJPG, SDL_COLORSPACE_JPEG);
break;
default:
// Unsupported format
break;
}
}
break;
default:
SDL_Log("CAMERA: unimplemented choice: %d", choice);
break;
}
}