media: Add V4L2_TYPE_IS_CAPTURE helper

It's all too easy to get confused by the V4L2_TYPE_IS_OUTPUT
macro, when it's used as !V4L2_TYPE_IS_OUTPUT.

Reduce the risk of confusion with macro to explicitly
check for the CAPTURE queue type case.

This change does not affect functionality, and it's
only intended to make the code more readable.

Suggested-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil-cisco@xs4all.nl: checkpatch: align with parenthesis]
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/common/videobuf2/videobuf2-v4l2.c

@@ -97,7 +97,7 @@ static int __verify_length(struct vb2_buffer *vb, const struct v4l2_buffer *b)
 	unsigned int bytesused;
 	unsigned int plane;
 
-	if (!V4L2_TYPE_IS_OUTPUT(b->type))
+	if (V4L2_TYPE_IS_CAPTURE(b->type))
 		return 0;
 
 	if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) {
@@ -311,7 +311,7 @@ static int vb2_fill_vb2_v4l2_buffer(struct vb2_buffer *vb, struct v4l2_buffer *b
 
 	/* Zero flags that we handle */
 	vbuf->flags = b->flags & ~V4L2_BUFFER_MASK_FLAGS;
-	if (!vb->vb2_queue->copy_timestamp || !V4L2_TYPE_IS_OUTPUT(b->type)) {
+	if (!vb->vb2_queue->copy_timestamp || V4L2_TYPE_IS_CAPTURE(b->type)) {
 		/*
 		 * Non-COPY timestamps and non-OUTPUT queues will get
 		 * their timestamp and timestamp source flags from the

drivers/media/platform/exynos-gsc/gsc-core.c

@@ -577,7 +577,7 @@ int gsc_try_selection(struct gsc_ctx *ctx, struct v4l2_selection *s)
 	v4l_bound_align_image(&tmp_w, min_w, max_w, mod_x,
 			      &tmp_h, min_h, max_h, mod_y, 0);
 
-	if (!V4L2_TYPE_IS_OUTPUT(s->type) &&
+	if (V4L2_TYPE_IS_CAPTURE(s->type) &&
 	    (ctx->gsc_ctrls.rotate->val == 90 ||
 	     ctx->gsc_ctrls.rotate->val == 270))
 		gsc_check_crop_change(tmp_h, tmp_w,

drivers/media/platform/exynos-gsc/gsc-m2m.c

@@ -255,7 +255,7 @@ static int gsc_m2m_buf_prepare(struct vb2_buffer *vb)
 	if (IS_ERR(frame))
 		return PTR_ERR(frame);
 
-	if (!V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
+	if (V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type)) {
 		for (i = 0; i < frame->fmt->num_planes; i++)
 			vb2_set_plane_payload(vb, i, frame->payload[i]);
 	}

drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c

@@ -731,7 +731,7 @@ static void mtk_jpeg_stop_streaming(struct vb2_queue *q)
 	 * subsampling. Update capture queue when the stream is off.
 	 */
 	if (ctx->state == MTK_JPEG_SOURCE_CHANGE &&
-	    !V4L2_TYPE_IS_OUTPUT(q->type)) {
+	    V4L2_TYPE_IS_CAPTURE(q->type)) {
 		struct mtk_jpeg_src_buf *src_buf;
 
 		vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);

drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c

@@ -193,7 +193,7 @@ static const struct mtk_mdp_fmt *mtk_mdp_try_fmt_mplane(struct mtk_mdp_ctx *ctx,
 
 	pix_mp->field = V4L2_FIELD_NONE;
 	pix_mp->pixelformat = fmt->pixelformat;
-	if (!V4L2_TYPE_IS_OUTPUT(f->type)) {
+	if (V4L2_TYPE_IS_CAPTURE(f->type)) {
 		pix_mp->colorspace = ctx->colorspace;
 		pix_mp->xfer_func = ctx->xfer_func;
 		pix_mp->ycbcr_enc = ctx->ycbcr_enc;
@@ -327,9 +327,8 @@ static int mtk_mdp_try_crop(struct mtk_mdp_ctx *ctx, u32 type,
 	mtk_mdp_bound_align_image(&new_w, min_w, max_w, align_w,
 				  &new_h, min_h, max_h, align_h);
 
-	if (!V4L2_TYPE_IS_OUTPUT(type) &&
-		(ctx->ctrls.rotate->val == 90 ||
-		ctx->ctrls.rotate->val == 270))
+	if (V4L2_TYPE_IS_CAPTURE(type) &&
+	    (ctx->ctrls.rotate->val == 90 || ctx->ctrls.rotate->val == 270))
 		mtk_mdp_check_crop_change(new_h, new_w,
 					  &r->width, &r->height);
 	else

drivers/media/platform/rcar_jpu.c

@@ -1066,7 +1066,7 @@ static int jpu_buf_prepare(struct vb2_buffer *vb)
 		}
 
 		/* decoder capture queue */
-		if (!ctx->encoder && !V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type))
+		if (!ctx->encoder && V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type))
 			vb2_set_plane_payload(vb, i, size);
 	}
 

drivers/media/platform/sti/hva/hva-v4l2.c

@@ -1087,7 +1087,7 @@ static void hva_stop_streaming(struct vb2_queue *vq)
 
 	if ((V4L2_TYPE_IS_OUTPUT(vq->type) &&
 	     vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q)) ||
-	    (!V4L2_TYPE_IS_OUTPUT(vq->type) &&
+	    (V4L2_TYPE_IS_CAPTURE(vq->type) &&
 	     vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q))) {
 		dev_dbg(dev, "%s %s out=%d cap=%d\n",
 			ctx->name, to_type_str(vq->type),

drivers/media/platform/ti-vpe/vpe.c

@@ -1576,7 +1576,7 @@ static int vpe_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
 
 	*f = q_data->format;
 
-	if (!V4L2_TYPE_IS_OUTPUT(f->type)) {
+	if (V4L2_TYPE_IS_CAPTURE(f->type)) {
 		struct vpe_q_data *s_q_data;
 		struct v4l2_pix_format_mplane *spix;
 

drivers/media/test-drivers/vicodec/vicodec-core.c

@@ -1442,7 +1442,7 @@ static void vicodec_buf_queue(struct vb2_buffer *vb)
 		.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
 	};
 
-	if (!V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type) &&
+	if (V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type) &&
 	    vb2_is_streaming(vb->vb2_queue) &&
 	    v4l2_m2m_dst_buf_is_last(ctx->fh.m2m_ctx)) {
 		unsigned int i;
@@ -1479,7 +1479,7 @@ static void vicodec_buf_queue(struct vb2_buffer *vb)
 	 * in the compressed stream
 	 */
 	if (ctx->is_stateless || ctx->is_enc ||
-	    !V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
+	    V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type)) {
 		v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
 		return;
 	}
@@ -1574,7 +1574,7 @@ static int vicodec_start_streaming(struct vb2_queue *q,
 	state->gop_cnt = 0;
 
 	if ((V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) ||
-	    (!V4L2_TYPE_IS_OUTPUT(q->type) && ctx->is_enc))
+	    (V4L2_TYPE_IS_CAPTURE(q->type) && ctx->is_enc))
 		return 0;
 
 	if (info->id == V4L2_PIX_FMT_FWHT ||

drivers/media/v4l2-core/v4l2-mem2mem.c

@@ -556,7 +556,7 @@ int v4l2_m2m_querybuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
 	ret = vb2_querybuf(vq, buf);
 
 	/* Adjust MMAP memory offsets for the CAPTURE queue */
-	if (buf->memory == V4L2_MEMORY_MMAP && !V4L2_TYPE_IS_OUTPUT(vq->type)) {
+	if (buf->memory == V4L2_MEMORY_MMAP && V4L2_TYPE_IS_CAPTURE(vq->type)) {
 		if (V4L2_TYPE_IS_MULTIPLANAR(vq->type)) {
 			for (i = 0; i < buf->length; ++i)
 				buf->m.planes[i].m.mem_offset
@@ -712,7 +712,7 @@ int v4l2_m2m_qbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
 	int ret;
 
 	vq = v4l2_m2m_get_vq(m2m_ctx, buf->type);
-	if (!V4L2_TYPE_IS_OUTPUT(vq->type) &&
+	if (V4L2_TYPE_IS_CAPTURE(vq->type) &&
 	    (buf->flags & V4L2_BUF_FLAG_REQUEST_FD)) {
 		dprintk("%s: requests cannot be used with capture buffers\n",
 			__func__);
@@ -729,7 +729,7 @@ int v4l2_m2m_qbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
 	 * buffer as DONE with LAST flag since it won't be queued on the
 	 * device.
 	 */
-	if (!V4L2_TYPE_IS_OUTPUT(vq->type) &&
+	if (V4L2_TYPE_IS_CAPTURE(vq->type) &&
 	    vb2_is_streaming(vq) && !vb2_start_streaming_called(vq) &&
 	   (v4l2_m2m_has_stopped(m2m_ctx) || v4l2_m2m_dst_buf_is_last(m2m_ctx)))
 		v4l2_m2m_force_last_buf_done(m2m_ctx, vq);

drivers/staging/media/hantro/hantro_v4l2.c

@@ -237,7 +237,7 @@ static int hantro_try_fmt(const struct hantro_ctx *ctx,
 			  enum v4l2_buf_type type)
 {
 	const struct hantro_fmt *fmt, *vpu_fmt;
-	bool capture = !V4L2_TYPE_IS_OUTPUT(type);
+	bool capture = V4L2_TYPE_IS_CAPTURE(type);
 	bool coded;
 
 	coded = capture == hantro_is_encoder_ctx(ctx);

drivers/staging/media/rkvdec/rkvdec.c

@@ -489,7 +489,7 @@ static int rkvdec_start_streaming(struct vb2_queue *q, unsigned int count)
 	const struct rkvdec_coded_fmt_desc *desc;
 	int ret;
 
-	if (!V4L2_TYPE_IS_OUTPUT(q->type))
+	if (V4L2_TYPE_IS_CAPTURE(q->type))
 		return 0;
 
 	desc = ctx->coded_fmt_desc;

include/uapi/linux/videodev2.h

@@ -171,6 +171,8 @@ enum v4l2_buf_type {
 	 || (type) == V4L2_BUF_TYPE_SDR_OUTPUT			\
 	 || (type) == V4L2_BUF_TYPE_META_OUTPUT)
 
+#define V4L2_TYPE_IS_CAPTURE(type) (!V4L2_TYPE_IS_OUTPUT(type))
+
 enum v4l2_tuner_type {
 	V4L2_TUNER_RADIO	     = 1,
 	V4L2_TUNER_ANALOG_TV	     = 2,