media: venus: helpers: add a helper to return opb buffer sizes

Add a helper function to return current output picture buffer size.
OPB sizes can vary depending on the selected decoder output(s).
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Reviewed-by: Alexandre Courbot <acourbot@chromium.org>
Tested-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

drivers/media/platform/qcom/venus/core.h

@@ -239,6 +239,9 @@ struct venus_buffer {
  * @num_output_bufs:	holds number of output buffers
  * @input_buf_size	holds input buffer size
  * @output_buf_size:	holds output buffer size
+ * @output2_buf_size:	holds secondary decoder output buffer size
+ * @opb_buftype:	output picture buffer type
+ * @opb_fmt:		output picture buffer raw format
  * @reconfig:	a flag raised by decoder when the stream resolution changed
  * @reconfig_width:	holds the new width
  * @reconfig_height:	holds the new height
@@ -288,6 +291,9 @@ struct venus_inst {
 	unsigned int num_output_bufs;
 	unsigned int input_buf_size;
 	unsigned int output_buf_size;
+	unsigned int output2_buf_size;
+	u32 opb_buftype;
+	u32 opb_fmt;
 	bool reconfig;
 	u32 reconfig_width;
 	u32 reconfig_height;

drivers/media/platform/qcom/venus/helpers.c

@@ -613,6 +613,21 @@ int venus_helper_set_bufsize(struct venus_inst *inst, u32 bufsize, u32 buftype)
 }
 EXPORT_SYMBOL_GPL(venus_helper_set_bufsize);
 
+unsigned int venus_helper_get_opb_size(struct venus_inst *inst)
+{
+	/* the encoder has only one output */
+	if (inst->session_type == VIDC_SESSION_TYPE_ENC)
+		return inst->output_buf_size;
+
+	if (inst->opb_buftype == HFI_BUFFER_OUTPUT)
+		return inst->output_buf_size;
+	else if (inst->opb_buftype == HFI_BUFFER_OUTPUT2)
+		return inst->output2_buf_size;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(venus_helper_get_opb_size);
+
 static void delayed_process_buf_func(struct work_struct *work)
 {
 	struct venus_buffer *buf, *n;

drivers/media/platform/qcom/venus/helpers.h

@@ -48,6 +48,7 @@ int venus_helper_set_raw_format(struct venus_inst *inst, u32 hfi_format,
 int venus_helper_set_color_format(struct venus_inst *inst, u32 fmt);
 int venus_helper_set_dyn_bufmode(struct venus_inst *inst);
 int venus_helper_set_bufsize(struct venus_inst *inst, u32 bufsize, u32 buftype);
+unsigned int venus_helper_get_opb_size(struct venus_inst *inst);
 void venus_helper_acquire_buf_ref(struct vb2_v4l2_buffer *vbuf);
 void venus_helper_release_buf_ref(struct venus_inst *inst, unsigned int idx);
 void venus_helper_init_instance(struct venus_inst *inst);