media: vicodec: resolution change suport

index 8cb0212df67f..5e9040f6c902 100644
@@ -11,30 +11,30 @@
 #include "codec-v4l2-fwht.h"
 
 static const struct v4l2_fwht_pixfmt_info v4l2_fwht_pixfmts[] = {
-	{ V4L2_PIX_FMT_YUV420,  1, 3, 2, 1, 1, 2, 2, 3},
-	{ V4L2_PIX_FMT_YVU420,  1, 3, 2, 1, 1, 2, 2, 3},
-	{ V4L2_PIX_FMT_YUV422P, 1, 2, 1, 1, 1, 2, 1, 3},
-	{ V4L2_PIX_FMT_NV12,    1, 3, 2, 1, 2, 2, 2, 3},
-	{ V4L2_PIX_FMT_NV21,    1, 3, 2, 1, 2, 2, 2, 3},
-	{ V4L2_PIX_FMT_NV16,    1, 2, 1, 1, 2, 2, 1, 3},
-	{ V4L2_PIX_FMT_NV61,    1, 2, 1, 1, 2, 2, 1, 3},
-	{ V4L2_PIX_FMT_NV24,    1, 3, 1, 1, 2, 1, 1, 3},
-	{ V4L2_PIX_FMT_NV42,    1, 3, 1, 1, 2, 1, 1, 3},
-	{ V4L2_PIX_FMT_YUYV,    2, 2, 1, 2, 4, 2, 1, 3},
-	{ V4L2_PIX_FMT_YVYU,    2, 2, 1, 2, 4, 2, 1, 3},
-	{ V4L2_PIX_FMT_UYVY,    2, 2, 1, 2, 4, 2, 1, 3},
-	{ V4L2_PIX_FMT_VYUY,    2, 2, 1, 2, 4, 2, 1, 3},
-	{ V4L2_PIX_FMT_BGR24,   3, 3, 1, 3, 3, 1, 1, 3},
-	{ V4L2_PIX_FMT_RGB24,   3, 3, 1, 3, 3, 1, 1, 3},
-	{ V4L2_PIX_FMT_HSV24,   3, 3, 1, 3, 3, 1, 1, 3},
-	{ V4L2_PIX_FMT_BGR32,   4, 4, 1, 4, 4, 1, 1, 3},
-	{ V4L2_PIX_FMT_XBGR32,  4, 4, 1, 4, 4, 1, 1, 3},
-	{ V4L2_PIX_FMT_RGB32,   4, 4, 1, 4, 4, 1, 1, 3},
-	{ V4L2_PIX_FMT_XRGB32,  4, 4, 1, 4, 4, 1, 1, 3},
-	{ V4L2_PIX_FMT_HSV32,   4, 4, 1, 4, 4, 1, 1, 3},
-	{ V4L2_PIX_FMT_ARGB32,  4, 4, 1, 4, 4, 1, 1, 4},
-	{ V4L2_PIX_FMT_ABGR32,  4, 4, 1, 4, 4, 1, 1, 4},
-	{ V4L2_PIX_FMT_GREY,    1, 1, 1, 1, 0, 1, 1, 1},
+	{ V4L2_PIX_FMT_YUV420,  1, 3, 2, 1, 1, 2, 2, 3, 3},
+	{ V4L2_PIX_FMT_YVU420,  1, 3, 2, 1, 1, 2, 2, 3, 3},
+	{ V4L2_PIX_FMT_YUV422P, 1, 2, 1, 1, 1, 2, 1, 3, 3},
+	{ V4L2_PIX_FMT_NV12,    1, 3, 2, 1, 2, 2, 2, 3, 2},
+	{ V4L2_PIX_FMT_NV21,    1, 3, 2, 1, 2, 2, 2, 3, 2},
+	{ V4L2_PIX_FMT_NV16,    1, 2, 1, 1, 2, 2, 1, 3, 2},
+	{ V4L2_PIX_FMT_NV61,    1, 2, 1, 1, 2, 2, 1, 3, 2},
+	{ V4L2_PIX_FMT_NV24,    1, 3, 1, 1, 2, 1, 1, 3, 2},
+	{ V4L2_PIX_FMT_NV42,    1, 3, 1, 1, 2, 1, 1, 3, 2},
+	{ V4L2_PIX_FMT_YUYV,    2, 2, 1, 2, 4, 2, 1, 3, 1},
+	{ V4L2_PIX_FMT_YVYU,    2, 2, 1, 2, 4, 2, 1, 3, 1},
+	{ V4L2_PIX_FMT_UYVY,    2, 2, 1, 2, 4, 2, 1, 3, 1},
+	{ V4L2_PIX_FMT_VYUY,    2, 2, 1, 2, 4, 2, 1, 3, 1},
+	{ V4L2_PIX_FMT_BGR24,   3, 3, 1, 3, 3, 1, 1, 3, 1},
+	{ V4L2_PIX_FMT_RGB24,   3, 3, 1, 3, 3, 1, 1, 3, 1},
+	{ V4L2_PIX_FMT_HSV24,   3, 3, 1, 3, 3, 1, 1, 3, 1},
+	{ V4L2_PIX_FMT_BGR32,   4, 4, 1, 4, 4, 1, 1, 3, 1},
+	{ V4L2_PIX_FMT_XBGR32,  4, 4, 1, 4, 4, 1, 1, 3, 1},
+	{ V4L2_PIX_FMT_RGB32,   4, 4, 1, 4, 4, 1, 1, 3, 1},
+	{ V4L2_PIX_FMT_XRGB32,  4, 4, 1, 4, 4, 1, 1, 3, 1},
+	{ V4L2_PIX_FMT_HSV32,   4, 4, 1, 4, 4, 1, 1, 3, 1},
+	{ V4L2_PIX_FMT_ARGB32,  4, 4, 1, 4, 4, 1, 1, 4, 1},
+	{ V4L2_PIX_FMT_ABGR32,  4, 4, 1, 4, 4, 1, 1, 4, 1},
+	{ V4L2_PIX_FMT_GREY,    1, 1, 1, 1, 0, 1, 1, 1, 1},
 };
 
 const struct v4l2_fwht_pixfmt_info *v4l2_fwht_find_pixfmt(u32 pixelformat)

index ed53e28d4f9c..685b665590c1 100644
@@ -19,6 +19,7 @@ struct v4l2_fwht_pixfmt_info {
 	unsigned int width_div;
 	unsigned int height_div;
 	unsigned int components_num;
+	unsigned int planes_num;
 };
 
 struct v4l2_fwht_state {

index 2378582d9790..6a7643bceb92 100644
@@ -61,7 +61,7 @@ struct pixfmt_info {
 };
 
 static const struct v4l2_fwht_pixfmt_info pixfmt_fwht = {
-	V4L2_PIX_FMT_FWHT, 0, 3, 1, 1, 1, 1, 1, 0
+	V4L2_PIX_FMT_FWHT, 0, 3, 1, 1, 1, 1, 1, 0, 1
 };
 
 static void vicodec_dev_release(struct device *dev)

index a6fd0477633b..229d0478ce6c 100644
@@ -10,6 +10,7 @@
  */
 
 #include <linux/string.h>
+#include <linux/kernel.h>
 #include "codec-fwht.h"
 
 /*

@@ -237,8 +238,6 @@ static void fwht(const u8 *block, s16 *output_block, unsigned int stride,
 	unsigned int i;
 
 	/* stage 1 */
-	stride *= input_step;
-
 	for (i = 0; i < 8; i++, tmp += stride, out += 8) {
 		switch (input_step) {
 		case 1:

@@ -562,7 +561,7 @@ static void fill_encoder_block(const u8 *input, s16 *dst,
 	for (i = 0; i < 8; i++) {
 		for (j = 0; j < 8; j++, input += input_step)
 			*dst++ = *input;
-		input += (stride - 8) * input_step;
+		input += stride - 8 * input_step;
 	}
 }
 

@@ -660,7 +659,7 @@ static void add_deltas(s16 *deltas, const u8 *ref, int stride)
 
 static u32 encode_plane(u8 *input, u8 *refp, __be16 **rlco, __be16 *rlco_max,
 			struct fwht_cframe *cf, u32 height, u32 width,
-			unsigned int input_step,
+			u32 stride, unsigned int input_step,
 			bool is_intra, bool next_is_intra)
 {
 	u8 *input_start = input;

@@ -671,7 +670,11 @@ static u32 encode_plane(u8 *input, u8 *refp, __be16 **rlco, __be16 *rlco_max,
 	unsigned int last_size = 0;
 	unsigned int i, j;
 
+	width = round_up(width, 8);
+	height = round_up(height, 8);
+
 	for (j = 0; j < height / 8; j++) {
+		input = input_start + j * 8 * stride;
 		for (i = 0; i < width / 8; i++) {
 			/* intra code, first frame is always intra coded. */
 			int blocktype = IBLOCK;

@@ -679,9 +682,9 @@ static u32 encode_plane(u8 *input, u8 *refp, __be16 **rlco, __be16 *rlco_max,
 
 			if (!is_intra)
 				blocktype = decide_blocktype(input, refp,
-					deltablock, width, input_step);
+					deltablock, stride, input_step);
 			if (blocktype == IBLOCK) {
-				fwht(input, cf->coeffs, width, input_step, 1);
+				fwht(input, cf->coeffs, stride, input_step, 1);
 				quantize_intra(cf->coeffs, cf->de_coeffs,
 					       cf->i_frame_qp);
 			} else {

@@ -722,12 +725,12 @@ static u32 encode_plane(u8 *input, u8 *refp, __be16 **rlco, __be16 *rlco_max,
 			}
 			last_size = size;
 		}
-		input += width * 7 * input_step;
 	}
 
 exit_loop:
 	if (encoding & FWHT_FRAME_UNENCODED) {
 		u8 *out = (u8 *)rlco_start;
+		u8 *p;
 
 		input = input_start;
 		/*

@@ -736,8 +739,11 @@ static u32 encode_plane(u8 *input, u8 *refp, __be16 **rlco, __be16 *rlco_max,
 		 * by 0xfe. Since YUV is limited range such values
 		 * shouldn't appear anyway.
 		 */
-		for (i = 0; i < height * width; i++, input += input_step)
-			*out++ = (*input == 0xff) ? 0xfe : *input;
+		for (j = 0; j < height; j++) {
+			for (i = 0, p = input; i < width; i++, p += input_step)
+				*out++ = (*p == 0xff) ? 0xfe : *p;
+			input += stride;
+		}
 		*rlco = (__be16 *)out;
 		encoding &= ~FWHT_FRAME_PCODED;
 	}

@@ -747,30 +753,32 @@ static u32 encode_plane(u8 *input, u8 *refp, __be16 **rlco, __be16 *rlco_max,
 u32 fwht_encode_frame(struct fwht_raw_frame *frm,
 		      struct fwht_raw_frame *ref_frm,
 		      struct fwht_cframe *cf,
-		      bool is_intra, bool next_is_intra)
+		      bool is_intra, bool next_is_intra,
+		      unsigned int width, unsigned int height,
+		      unsigned int stride, unsigned int chroma_stride)
 {
-	unsigned int size = frm->height * frm->width;
+	unsigned int size = height * width;
 	__be16 *rlco = cf->rlc_data;
 	__be16 *rlco_max;
 	u32 encoding;
 
 	rlco_max = rlco + size / 2 - 256;
 	encoding = encode_plane(frm->luma, ref_frm->luma, &rlco, rlco_max, cf,
-				frm->height, frm->width,
+				height, width, stride,
 				frm->luma_alpha_step, is_intra, next_is_intra);
 	if (encoding & FWHT_FRAME_UNENCODED)
 		encoding |= FWHT_LUMA_UNENCODED;
 	encoding &= ~FWHT_FRAME_UNENCODED;
 
 	if (frm->components_num >= 3) {
-		u32 chroma_h = frm->height / frm->height_div;
-		u32 chroma_w = frm->width / frm->width_div;
+		u32 chroma_h = height / frm->height_div;
+		u32 chroma_w = width / frm->width_div;
 		unsigned int chroma_size = chroma_h * chroma_w;
 
 		rlco_max = rlco + chroma_size / 2 - 256;
 		encoding |= encode_plane(frm->cb, ref_frm->cb, &rlco, rlco_max,
 					 cf, chroma_h, chroma_w,
-					 frm->chroma_step,
+					 chroma_stride, frm->chroma_step,
 					 is_intra, next_is_intra);
 		if (encoding & FWHT_FRAME_UNENCODED)
 			encoding |= FWHT_CB_UNENCODED;

@@ -778,7 +786,7 @@ u32 fwht_encode_frame(struct fwht_raw_frame *frm,
 		rlco_max = rlco + chroma_size / 2 - 256;
 		encoding |= encode_plane(frm->cr, ref_frm->cr, &rlco, rlco_max,
 					 cf, chroma_h, chroma_w,
-					 frm->chroma_step,
+					 chroma_stride, frm->chroma_step,
 					 is_intra, next_is_intra);
 		if (encoding & FWHT_FRAME_UNENCODED)
 			encoding |= FWHT_CR_UNENCODED;

@@ -788,8 +796,8 @@ u32 fwht_encode_frame(struct fwht_raw_frame *frm,
 	if (frm->components_num == 4) {
 		rlco_max = rlco + size / 2 - 256;
 		encoding |= encode_plane(frm->alpha, ref_frm->alpha, &rlco,
-					 rlco_max, cf, frm->height, frm->width,
-					 frm->luma_alpha_step,
+					 rlco_max, cf, height, width,
+					 stride, frm->luma_alpha_step,
 					 is_intra, next_is_intra);
 		if (encoding & FWHT_FRAME_UNENCODED)
 			encoding |= FWHT_ALPHA_UNENCODED;

@@ -801,13 +809,16 @@ u32 fwht_encode_frame(struct fwht_raw_frame *frm,
 }
 
 static void decode_plane(struct fwht_cframe *cf, const __be16 **rlco, u8 *ref,
-			 u32 height, u32 width, bool uncompressed)
+			 u32 height, u32 width, u32 coded_width, bool uncompressed)
 {
 	unsigned int copies = 0;
 	s16 copy[8 * 8];
 	s16 stat;
 	unsigned int i, j;
 
+	width = round_up(width, 8);
+	height = round_up(height, 8);
+
 	if (uncompressed) {
 		memcpy(ref, *rlco, width * height);
 		*rlco += width * height / 2;

@@ -822,13 +833,13 @@ static void decode_plane(struct fwht_cframe *cf, const __be16 **rlco, u8 *ref,
 	 */
 	for (j = 0; j < height / 8; j++) {
 		for (i = 0; i < width / 8; i++) {
-			u8 *refp = ref + j * 8 * width + i * 8;
+			u8 *refp = ref + j * 8 * coded_width + i * 8;
 
 			if (copies) {
 				memcpy(cf->de_fwht, copy, sizeof(copy));
 				if (stat & PFRAME_BIT)
-					add_deltas(cf->de_fwht, refp, width);
-				fill_decoder_block(refp, cf->de_fwht, width);
+					add_deltas(cf->de_fwht, refp, coded_width);
+				fill_decoder_block(refp, cf->de_fwht, coded_width);
 				copies--;
 				continue;
 			}

@@ -847,35 +858,40 @@ static void decode_plane(struct fwht_cframe *cf, const __be16 **rlco, u8 *ref,
 			if (copies)
 				memcpy(copy, cf->de_fwht, sizeof(copy));
 			if (stat & PFRAME_BIT)
-				add_deltas(cf->de_fwht, refp, width);
-			fill_decoder_block(refp, cf->de_fwht, width);
+				add_deltas(cf->de_fwht, refp, coded_width);
+			fill_decoder_block(refp, cf->de_fwht, coded_width);
 		}
 	}
 }
 
 void fwht_decode_frame(struct fwht_cframe *cf, struct fwht_raw_frame *ref,
-		       u32 hdr_flags, unsigned int components_num)
+		       u32 hdr_flags, unsigned int components_num,
+		       unsigned int width, unsigned int height,
+		       unsigned int coded_width)
 {
 	const __be16 *rlco = cf->rlc_data;
 
-	decode_plane(cf, &rlco, ref->luma, cf->height, cf->width,
+	decode_plane(cf, &rlco, ref->luma, height, width, coded_width,
 		     hdr_flags & FWHT_FL_LUMA_IS_UNCOMPRESSED);
 
 	if (components_num >= 3) {
-		u32 h = cf->height;
-		u32 w = cf->width;
+		u32 h = height;
+		u32 w = width;
+		u32 c = coded_width;
 
 		if (!(hdr_flags & FWHT_FL_CHROMA_FULL_HEIGHT))
 			h /= 2;
-		if (!(hdr_flags & FWHT_FL_CHROMA_FULL_WIDTH))
+		if (!(hdr_flags & FWHT_FL_CHROMA_FULL_WIDTH)) {
 			w /= 2;
-		decode_plane(cf, &rlco, ref->cb, h, w,
+			c /= 2;
+		}
+		decode_plane(cf, &rlco, ref->cb, h, w, c,
 			     hdr_flags & FWHT_FL_CB_IS_UNCOMPRESSED);
-		decode_plane(cf, &rlco, ref->cr, h, w,
+		decode_plane(cf, &rlco, ref->cr, h, w, c,
 			     hdr_flags & FWHT_FL_CR_IS_UNCOMPRESSED);
 	}
 
 	if (components_num == 4)
-		decode_plane(cf, &rlco, ref->alpha, cf->height, cf->width,
+		decode_plane(cf, &rlco, ref->alpha, height, width, coded_width,
 			     hdr_flags & FWHT_FL_ALPHA_IS_UNCOMPRESSED);
 }

index 90ff8962fca7..6d230f5e9d60 100644
@@ -81,6 +81,13 @@
 #define FWHT_FL_COMPONENTS_NUM_MSK	GENMASK(17, 16)
 #define FWHT_FL_COMPONENTS_NUM_OFFSET	16
 
+/*
+ * A macro to calculate the needed padding in order to make sure
+ * both luma and chroma components resolutions are rounded up to
+ * a multiple of 8
+ */
+#define vic_round_dim(dim, div) (round_up((dim) / (div), 8) * (div))
+
 struct fwht_cframe_hdr {
 	u32 magic1;
 	u32 magic2;

@@ -95,7 +102,6 @@ struct fwht_cframe_hdr {
 };
 
 struct fwht_cframe {
-	unsigned int width, height;
 	u16 i_frame_qp;
 	u16 p_frame_qp;
 	__be16 *rlc_data;

@@ -106,7 +112,6 @@ struct fwht_cframe {
 };
 
 struct fwht_raw_frame {
-	unsigned int width, height;
 	unsigned int width_div;
 	unsigned int height_div;
 	unsigned int luma_alpha_step;

@@ -125,8 +130,12 @@ struct fwht_raw_frame {
 u32 fwht_encode_frame(struct fwht_raw_frame *frm,
 		      struct fwht_raw_frame *ref_frm,
 		      struct fwht_cframe *cf,
-		      bool is_intra, bool next_is_intra);
+		      bool is_intra, bool next_is_intra,
+		      unsigned int width, unsigned int height,
+		      unsigned int stride, unsigned int chroma_stride);
 void fwht_decode_frame(struct fwht_cframe *cf, struct fwht_raw_frame *ref,
-		       u32 hdr_flags, unsigned int components_num);
+		       u32 hdr_flags, unsigned int components_num,
+		       unsigned int width, unsigned int height,
+		       unsigned int coded_width);
 
 #endif

425 lines not on this page · raw message

index 685b665590c1..203c45d98905 100644
@@ -24,8 +24,11 @@ struct v4l2_fwht_pixfmt_info {
 
 struct v4l2_fwht_state {
 	const struct v4l2_fwht_pixfmt_info *info;
-	unsigned int width;
-	unsigned int height;
+	unsigned int visible_width;
+	unsigned int visible_height;
+	unsigned int coded_width;
+	unsigned int coded_height;
+	unsigned int stride;
 	unsigned int gop_size;
 	unsigned int gop_cnt;
 	u16 i_frame_qp;

254 lines not on this page · raw message

index 6d230f5e9d60..2984dc772515 100644
@@ -78,7 +78,7 @@
 #define FWHT_FL_ALPHA_IS_UNCOMPRESSED	BIT(9)
 
 /* A 4-values flag - the number of components - 1 */
-#define FWHT_FL_COMPONENTS_NUM_MSK	GENMASK(17, 16)
+#define FWHT_FL_COMPONENTS_NUM_MSK	GENMASK(18, 16)
 #define FWHT_FL_COMPONENTS_NUM_OFFSET	16
 
 /*

index 2984dc772515..ad8cfc60a152 100644
@@ -81,6 +81,12 @@
 #define FWHT_FL_COMPONENTS_NUM_MSK	GENMASK(18, 16)
 #define FWHT_FL_COMPONENTS_NUM_OFFSET	16
 
+#define FWHT_FL_PIXENC_MSK	GENMASK(20, 19)
+#define FWHT_FL_PIXENC_OFFSET	19
+#define FWHT_FL_PIXENC_YUV	(1 << FWHT_FL_PIXENC_OFFSET)
+#define FWHT_FL_PIXENC_RGB	(2 << FWHT_FL_PIXENC_OFFSET)
+#define FWHT_FL_PIXENC_HSV	(3 << FWHT_FL_PIXENC_OFFSET)
+
 /*
  * A macro to calculate the needed padding in order to make sure
  * both luma and chroma components resolutions are rounded up to

99 lines not on this page · raw message

index 203c45d98905..18ac25978829 100644
@@ -20,6 +20,7 @@ struct v4l2_fwht_pixfmt_info {
 	unsigned int height_div;
 	unsigned int components_num;
 	unsigned int planes_num;
+	unsigned int pixenc;
 };
 
 struct v4l2_fwht_state {

@@ -45,6 +46,11 @@ struct v4l2_fwht_state {
 
 const struct v4l2_fwht_pixfmt_info *v4l2_fwht_find_pixfmt(u32 pixelformat);
 const struct v4l2_fwht_pixfmt_info *v4l2_fwht_get_pixfmt(u32 idx);
+const struct v4l2_fwht_pixfmt_info *v4l2_fwht_default_fmt(u32 width_div,
+							  u32 height_div,
+							  u32 components_num,
+							  u32 pixenc,
+							  unsigned int start_idx);
 
 int v4l2_fwht_encode(struct v4l2_fwht_state *state, u8 *p_in, u8 *p_out);
 int v4l2_fwht_decode(struct v4l2_fwht_state *state, u8 *p_in, u8 *p_out);

index 3fab1050855e..ef7ee75106b5 100644
@@ -395,9 +395,9 @@ static int vidioc_querycap(struct file *file, void *priv,
 	return 0;
 }
 
-static int enum_fmt(struct v4l2_fmtdesc *f, bool is_enc, bool is_out)
+static int enum_fmt(struct v4l2_fmtdesc *f, struct vicodec_ctx *ctx, bool is_out)
 {
-	bool is_uncomp = (is_enc && is_out) || (!is_enc && !is_out);
+	bool is_uncomp = (ctx->is_enc && is_out) || (!ctx->is_enc && !is_out);
 
 	if (V4L2_TYPE_IS_MULTIPLANAR(f->type) && !multiplanar)
 		return -EINVAL;

@@ -405,9 +405,16 @@ static int enum_fmt(struct v4l2_fmtdesc *f, bool is_enc, bool is_out)
 		return -EINVAL;
 
 	if (is_uncomp) {
-		const struct v4l2_fwht_pixfmt_info *info =
-			v4l2_fwht_get_pixfmt(f->index);
+		const struct v4l2_fwht_pixfmt_info *info = get_q_data(ctx, f->type)->info;
 
+		if (ctx->is_enc)
+			info = v4l2_fwht_get_pixfmt(f->index);
+		else
+			info = v4l2_fwht_default_fmt(info->width_div,
+						     info->height_div,
+						     info->components_num,
+						     info->pixenc,
+						     f->index);
 		if (!info)
 			return -EINVAL;
 		f->pixelformat = info->id;

@@ -424,7 +431,7 @@ static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
 {
 	struct vicodec_ctx *ctx = file2ctx(file);
 
-	return enum_fmt(f, ctx->is_enc, false);
+	return enum_fmt(f, ctx, false);
 }
 
 static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,

@@ -432,7 +439,7 @@ static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
 {
 	struct vicodec_ctx *ctx = file2ctx(file);
 
-	return enum_fmt(f, ctx->is_enc, true);
+	return enum_fmt(f, ctx, true);
 }
 
 static int vidioc_g_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)

index 63b7e1525dbc..4b7133725ea8 100644
@@ -233,7 +233,6 @@ int v4l2_fwht_decode(struct v4l2_fwht_state *state, u8 *p_in, u8 *p_out)
 {
 	unsigned int i, j, k;
 	u32 flags;
-	struct fwht_cframe_hdr *p_hdr;
 	struct fwht_cframe cf;
 	u8 *p, *ref_p;
 	unsigned int components_num = 3;

@@ -245,25 +244,24 @@ int v4l2_fwht_decode(struct v4l2_fwht_state *state, u8 *p_in, u8 *p_out)
 		return -EINVAL;
 
 	info = state->info;
-	p_hdr = (struct fwht_cframe_hdr *)p_in;
 
-	version = ntohl(p_hdr->version);
+	version = ntohl(state->header.version);
 	if (!version || version > FWHT_VERSION) {
 		pr_err("version %d is not supported, current version is %d\n",
 		       version, FWHT_VERSION);
 		return -EINVAL;
 	}
 
-	if (p_hdr->magic1 != FWHT_MAGIC1 ||
-	    p_hdr->magic2 != FWHT_MAGIC2)
+	if (state->header.magic1 != FWHT_MAGIC1 ||
+	    state->header.magic2 != FWHT_MAGIC2)
 		return -EINVAL;
 
 	/* TODO: support resolution changes */
-	if (ntohl(p_hdr->width)  != state->visible_width ||
-	    ntohl(p_hdr->height) != state->visible_height)
+	if (ntohl(state->header.width)  != state->visible_width ||
+	    ntohl(state->header.height) != state->visible_height)
 		return -EINVAL;
 
-	flags = ntohl(p_hdr->flags);
+	flags = ntohl(state->header.flags);
 
 	if (version == FWHT_VERSION) {
 		if ((flags & FWHT_FL_PIXENC_MSK) != info->pixenc)

@@ -275,11 +273,11 @@ int v4l2_fwht_decode(struct v4l2_fwht_state *state, u8 *p_in, u8 *p_out)
 	if (components_num != info->components_num)
 		return -EINVAL;
 
-	state->colorspace = ntohl(p_hdr->colorspace);
-	state->xfer_func = ntohl(p_hdr->xfer_func);
-	state->ycbcr_enc = ntohl(p_hdr->ycbcr_enc);
-	state->quantization = ntohl(p_hdr->quantization);
-	cf.rlc_data = (__be16 *)(p_in + sizeof(*p_hdr));
+	state->colorspace = ntohl(state->header.colorspace);
+	state->xfer_func = ntohl(state->header.xfer_func);
+	state->ycbcr_enc = ntohl(state->header.ycbcr_enc);
+	state->quantization = ntohl(state->header.quantization);
+	cf.rlc_data = (__be16 *)p_in;
 
 	hdr_width_div = (flags & FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
 	hdr_height_div = (flags & FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;

index 18ac25978829..aa6fa90a48be 100644
@@ -41,6 +41,7 @@ struct v4l2_fwht_state {
 	enum v4l2_quantization quantization;
 
 	struct fwht_raw_frame ref_frame;
+	struct fwht_cframe_hdr header;
 	u8 *compressed_frame;
 };
 

149 lines not on this page · raw message

index 2a95eca3cae6..de7d5ce0ec72 100644
@@ -129,6 +129,8 @@ struct vicodec_ctx {
 	u32			comp_frame_size;
 	bool			comp_has_frame;
 	bool			comp_has_next_frame;
+	bool			first_source_change_sent;
+	bool			source_changed;
 };
 
 static inline struct vicodec_ctx *file2ctx(struct file *file)

@@ -322,6 +324,95 @@ static void job_remove_src_buf(struct vicodec_ctx *ctx, u32 state)
 	spin_unlock(ctx->lock);
 }
 
+static const struct v4l2_fwht_pixfmt_info *info_from_header(const struct fwht_cframe_hdr *p_hdr)
+{
+	unsigned int flags = ntohl(p_hdr->flags);
+	unsigned int width_div = (flags & FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
+	unsigned int height_div = (flags & FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
+	unsigned int components_num = 3;
+	unsigned int pixenc = 0;
+	unsigned int version = ntohl(p_hdr->version);
+
+	if (version == FWHT_VERSION) {
+		components_num = 1 + ((flags & FWHT_FL_COMPONENTS_NUM_MSK) >>
+				FWHT_FL_COMPONENTS_NUM_OFFSET);
+		pixenc = (flags & FWHT_FL_PIXENC_MSK);
+	}
+	return v4l2_fwht_default_fmt(width_div, height_div,
+				     components_num, pixenc, 0);
+}
+
+static bool is_header_valid(const struct fwht_cframe_hdr *p_hdr)
+{
+	const struct v4l2_fwht_pixfmt_info *info;
+	unsigned int w = ntohl(p_hdr->width);
+	unsigned int h = ntohl(p_hdr->height);
+	unsigned int version = ntohl(p_hdr->version);
+	unsigned int flags = ntohl(p_hdr->flags);
+
+	if (!version || version > FWHT_VERSION)
+		return false;
+
+	if (w < MIN_WIDTH || w > MAX_WIDTH || h < MIN_HEIGHT || h > MAX_HEIGHT)
+		return false;
+
+	if (version == FWHT_VERSION) {
+		unsigned int components_num = 1 +
+			((flags & FWHT_FL_COMPONENTS_NUM_MSK) >>
+			FWHT_FL_COMPONENTS_NUM_OFFSET);
+		unsigned int pixenc = flags & FWHT_FL_PIXENC_MSK;
+
+		if (components_num == 0 || components_num > 4 || !pixenc)
+			return false;
+	}
+
+	info = info_from_header(p_hdr);
+	if (!info)
+		return false;
+	return true;
+}
+
+static void update_capture_data_from_header(struct vicodec_ctx *ctx)
+{
+	struct vicodec_q_data *q_dst = get_q_data(ctx,
+						  V4L2_BUF_TYPE_VIDEO_CAPTURE);
+	const struct fwht_cframe_hdr *p_hdr = &ctx->state.header;
+	const struct v4l2_fwht_pixfmt_info *info = info_from_header(p_hdr);
+	unsigned int flags = ntohl(p_hdr->flags);
+	unsigned int hdr_width_div = (flags & FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
+	unsigned int hdr_height_div = (flags & FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
+
+	q_dst->info = info;
+	q_dst->visible_width = ntohl(p_hdr->width);
+	q_dst->visible_height = ntohl(p_hdr->height);
+	q_dst->coded_width = vic_round_dim(q_dst->visible_width, hdr_width_div);
+	q_dst->coded_height = vic_round_dim(q_dst->visible_height,
+					    hdr_height_div);
+
+	q_dst->sizeimage = q_dst->coded_width * q_dst->coded_height *
+		q_dst->info->sizeimage_mult / q_dst->info->sizeimage_div;
+	ctx->state.colorspace = ntohl(p_hdr->colorspace);
+
+	ctx->state.xfer_func = ntohl(p_hdr->xfer_func);
+	ctx->state.ycbcr_enc = ntohl(p_hdr->ycbcr_enc);
+	ctx->state.quantization = ntohl(p_hdr->quantization);
+}
+
+static void set_last_buffer(struct vb2_v4l2_buffer *dst_buf,
+			    const struct vb2_v4l2_buffer *src_buf,
+			    struct vicodec_ctx *ctx)
+{
+	struct vicodec_q_data *q_dst = get_q_data(ctx,
+						  V4L2_BUF_TYPE_VIDEO_CAPTURE);
+
+	vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0);
+	dst_buf->sequence = q_dst->sequence++;
+
+	v4l2_m2m_buf_copy_data(src_buf, dst_buf, !ctx->is_enc);
+	dst_buf->flags |= V4L2_BUF_FLAG_LAST;
+	v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
+}
+
 static int job_ready(void *priv)
 {
 	static const u8 magic[] = {

@@ -333,7 +424,15 @@ static int job_ready(void *priv)
 	u8 *p;
 	u32 sz;
 	u32 state;
-
+	struct vicodec_q_data *q_dst = get_q_data(ctx,
+						  V4L2_BUF_TYPE_VIDEO_CAPTURE);
+	unsigned int flags;
+	unsigned int hdr_width_div;
+	unsigned int hdr_height_div;
+	unsigned int max_to_copy;
+
+	if (ctx->source_changed)
+		return 0;
 	if (ctx->is_enc || ctx->comp_has_frame)
 		return 1;
 

@@ -356,12 +455,19 @@ static int job_ready(void *priv)
 		}
 
 		ctx->comp_frame_size = ntohl(ctx->state.header.size);
-
-		if (ctx->comp_frame_size > ctx->comp_max_size)
-			ctx->comp_frame_size = ctx->comp_max_size;
 	}
-	if (ctx->comp_size < ctx->comp_frame_size) {
-		u32 copy = ctx->comp_frame_size - ctx->comp_size;
+
+	/*
+	 * The current scanned frame might be the first frame of a new
+	 * resolution so its size might be larger than ctx->comp_max_size.
+	 * In that case it is copied up to the current buffer capacity and
+	 * the copy will continue after allocating new large enough buffer
+	 * when restreaming
+	 */
+	max_to_copy = min(ctx->comp_frame_size, ctx->comp_max_size);
+
+	if (ctx->comp_size < max_to_copy) {
+		u32 copy = max_to_copy - ctx->comp_size;
 
 		if (copy > p_src + sz - p)
 			copy = p_src + sz - p;

@@ -370,15 +476,16 @@ static int job_ready(void *priv)
 		       p, copy);
 		p += copy;
 		ctx->comp_size += copy;
-		if (ctx->comp_size < ctx->comp_frame_size) {
+		if (ctx->comp_size < max_to_copy) {
 			job_remove_src_buf(ctx, state);
 			goto restart;
 		}
 	}
 	ctx->cur_buf_offset = p - p_src;
-	ctx->comp_has_frame = true;
+	if (ctx->comp_size == ctx->comp_frame_size)
+		ctx->comp_has_frame = true;
 	ctx->comp_has_next_frame = false;
-	if (sz - ctx->cur_buf_offset >= sizeof(struct fwht_cframe_hdr)) {
+	if (ctx->comp_has_frame && sz - ctx->cur_buf_offset >= sizeof(struct fwht_cframe_hdr)) {
 		struct fwht_cframe_hdr *p_hdr = (struct fwht_cframe_hdr *)p;
 		u32 frame_size = ntohl(p_hdr->size);
 		u32 remaining = sz - ctx->cur_buf_offset - sizeof(*p_hdr);

@@ -386,6 +493,36 @@ static int job_ready(void *priv)
 		if (!memcmp(p, magic, sizeof(magic)))
 			ctx->comp_has_next_frame = remaining >= frame_size;
 	}
+	/*
+	 * if the header is invalid the device_run will just drop the frame
+	 * with an error
+	 */
+	if (!is_header_valid(&ctx->state.header) && ctx->comp_has_frame)
+		return 1;
+	flags = ntohl(ctx->state.header.flags);
+	hdr_width_div = (flags & FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
+	hdr_height_div = (flags & FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
+
+	if (ntohl(ctx->state.header.width) != q_dst->visible_width ||
+	    ntohl(ctx->state.header.height) != q_dst->visible_height ||
+	    !q_dst->info ||
+	    hdr_width_div != q_dst->info->width_div ||
+	    hdr_height_div != q_dst->info->height_div) {
+		static const struct v4l2_event rs_event = {
+			.type = V4L2_EVENT_SOURCE_CHANGE,
+			.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
+		};
+
+		struct vb2_v4l2_buffer *dst_buf =
+			v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+
+		update_capture_data_from_header(ctx);
+		ctx->first_source_change_sent = true;
+		v4l2_event_queue_fh(&ctx->fh, &rs_event);
+		set_last_buffer(dst_buf, src_buf, ctx);
+		ctx->source_changed = true;
+		return 0;
+	}
 	return 1;
 }
 

@@ -425,7 +562,7 @@ static int enum_fmt(struct v4l2_fmtdesc *f, struct vicodec_ctx *ctx, bool is_out
 	if (is_uncomp) {
 		const struct v4l2_fwht_pixfmt_info *info = get_q_data(ctx, f->type)->info;
 
-		if (ctx->is_enc)
+		if (!info || ctx->is_enc)
 			info = v4l2_fwht_get_pixfmt(f->index);
 		else
 			info = v4l2_fwht_default_fmt(info->width_div,

@@ -475,6 +612,9 @@ static int vidioc_g_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
 	q_data = get_q_data(ctx, f->type);
 	info = q_data->info;
 
+	if (!info)
+		info = v4l2_fwht_get_pixfmt(0);
+
 	switch (f->type) {
 	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
 	case V4L2_BUF_TYPE_VIDEO_OUTPUT:

@@ -673,6 +813,7 @@ static int vidioc_s_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
 		pix = &f->fmt.pix;
 		if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type))
 			fmt_changed =
+				!q_data->info ||
 				q_data->info->id != pix->pixelformat ||
 				q_data->coded_width != pix->width ||
 				q_data->coded_height != pix->height;

@@ -693,6 +834,7 @@ static int vidioc_s_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
 		pix_mp = &f->fmt.pix_mp;
 		if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type))
 			fmt_changed =
+				!q_data->info ||
 				q_data->info->id != pix_mp->pixelformat ||
 				q_data->coded_width != pix_mp->width ||
 				q_data->coded_height != pix_mp->height;

@@ -948,6 +1090,7 @@ static int vicodec_subscribe_event(struct v4l2_fh *fh,
 {
 	switch (sub->type) {
 	case V4L2_EVENT_EOS:
+	case V4L2_EVENT_SOURCE_CHANGE:
 		return v4l2_event_subscribe(fh, sub, 0, NULL);
 	default:
 		return v4l2_ctrl_subscribe_event(fh, sub);

@@ -1056,7 +1199,70 @@ static void vicodec_buf_queue(struct vb2_buffer *vb)
 {
 	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
 	struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+	unsigned int sz = vb2_get_plane_payload(&vbuf->vb2_buf, 0);
+	u8 *p_src = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
+	u8 *p = p_src;
+	struct vb2_queue *vq_out = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
+						   V4L2_BUF_TYPE_VIDEO_OUTPUT);
+	struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
+						   V4L2_BUF_TYPE_VIDEO_CAPTURE);
+	bool header_valid = false;
+	static const struct v4l2_event rs_event = {
+		.type = V4L2_EVENT_SOURCE_CHANGE,
+		.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
+	};
+
+	/* buf_queue handles only the first source change event */
+	if (ctx->first_source_change_sent) {
+		v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
+		return;
+	}
+
+	/*
+	 * if both queues are streaming, the source change event is
+	 * handled in job_ready
+	 */
+	if (vb2_is_streaming(vq_cap) && vb2_is_streaming(vq_out)) {
+		v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
+		return;
+	}
+
+	/*
+	 * source change event is relevant only for the decoder
+	 * in the compressed stream
+	 */
+	if (ctx->is_enc || !V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
+		v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
+		return;
+	}
+
+	do {
+		enum vb2_buffer_state state =
+			get_next_header(ctx, &p, p_src + sz - p);
+
+		if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
+			v4l2_m2m_buf_done(vbuf, state);
+			return;
+		}
+		header_valid = is_header_valid(&ctx->state.header);
+		/*
+		 * p points right after the end of the header in the
+		 * buffer. If the header is invalid we set p to point
+		 * to the next byte after the start of the header
+		 */
+		if (!header_valid) {
+			p = p - sizeof(struct fwht_cframe_hdr) + 1;
+			ctx->header_size = 0;
+			ctx->comp_magic_cnt = 0;
+		}
+
+	} while (!header_valid);
+	if (p < p_src + sz)
+		ctx->cur_buf_offset = p - p_src;
 
+	update_capture_data_from_header(ctx);
+	ctx->first_source_change_sent = true;
+	v4l2_event_queue_fh(&ctx->fh, &rs_event);
 	v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
 }
 

@@ -1086,50 +1292,68 @@ static int vicodec_start_streaming(struct vb2_queue *q,
 	struct v4l2_fwht_state *state = &ctx->state;
 	const struct v4l2_fwht_pixfmt_info *info = q_data->info;
 	unsigned int size = q_data->coded_width * q_data->coded_height;
-	unsigned int chroma_div = info->width_div * info->height_div;
+	unsigned int chroma_div;
 	unsigned int total_planes_size;
+	u8 *new_comp_frame;
 
-	/*
-	 * we don't know ahead how many components are in the encoding type
-	 * V4L2_PIX_FMT_FWHT, so we will allocate space for 4 planes.
-	 */
-	if (info->id == V4L2_PIX_FMT_FWHT || info->components_num == 4)
+	if (!info)
+		return -EINVAL;
+
+	chroma_div = info->width_div * info->height_div;
+	q_data->sequence = 0;
+
+	ctx->last_src_buf = NULL;
+	ctx->last_dst_buf = NULL;
+	state->gop_cnt = 0;
+
+	if ((V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) ||
+	    (!V4L2_TYPE_IS_OUTPUT(q->type) && ctx->is_enc))
+		return 0;
+
+	if (info->id == V4L2_PIX_FMT_FWHT) {
+		vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED);
+		return -EINVAL;
+	}
+	if (info->components_num == 4)
 		total_planes_size = 2 * size + 2 * (size / chroma_div);
 	else if (info->components_num == 3)
 		total_planes_size = size + 2 * (size / chroma_div);
 	else
 		total_planes_size = size;
 
-	q_data->sequence = 0;
-
-	if (!V4L2_TYPE_IS_OUTPUT(q->type)) {
-		if (!ctx->is_enc) {
-			state->visible_width = q_data->visible_width;
-			state->visible_height = q_data->visible_height;
-			state->coded_width = q_data->coded_width;
-			state->coded_height = q_data->coded_height;
-			state->stride = q_data->coded_width * info->bytesperline_mult;
-		}
-		return 0;
-	}
+	state->visible_width = q_data->visible_width;
+	state->visible_height = q_data->visible_height;
+	state->coded_width = q_data->coded_width;
+	state->coded_height = q_data->coded_height;
+	state->stride = q_data->coded_width * info->bytesperline_mult;
 
-	if (ctx->is_enc) {
-		state->visible_width = q_data->visible_width;
-		state->visible_height = q_data->visible_height;
-		state->coded_width = q_data->coded_width;
-		state->coded_height = q_data->coded_height;
-		state->stride = q_data->coded_width * info->bytesperline_mult;
-	}
 	state->ref_frame.luma = kvmalloc(total_planes_size, GFP_KERNEL);
 	ctx->comp_max_size = total_planes_size;
-	state->compressed_frame = kvmalloc(ctx->comp_max_size, GFP_KERNEL);
-	if (!state->ref_frame.luma || !state->compressed_frame) {
+	new_comp_frame = kvmalloc(ctx->comp_max_size, GFP_KERNEL);
+
+	if (!state->ref_frame.luma || !new_comp_frame) {
 		kvfree(state->ref_frame.luma);
-		kvfree(state->compressed_frame);
+		kvfree(new_comp_frame);
 		vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED);
 		return -ENOMEM;
 	}
-	if (info->id == V4L2_PIX_FMT_FWHT || info->components_num >= 3) {
+	/*
+	 * if state->compressed_frame was already allocated then
+	 * it contain data of the first frame of the new resolution
+	 */
+	if (state->compressed_frame) {
+		if (ctx->comp_size > ctx->comp_max_size) {
+			ctx->comp_size = ctx->comp_max_size;
+			ctx->comp_frame_size = ctx->comp_max_size;
+		}
+		memcpy(new_comp_frame,
+		       state->compressed_frame, ctx->comp_size);
+	}
+
+	kvfree(state->compressed_frame);
+	state->compressed_frame = new_comp_frame;
+
+	if (info->components_num >= 3) {
 		state->ref_frame.cb = state->ref_frame.luma + size;
 		state->ref_frame.cr = state->ref_frame.cb + size / chroma_div;
 	} else {

@@ -1137,21 +1361,11 @@ static int vicodec_start_streaming(struct vb2_queue *q,
 		state->ref_frame.cr = NULL;
 	}
 
-	if (info->id == V4L2_PIX_FMT_FWHT || info->components_num == 4)
+	if (info->components_num == 4)
 		state->ref_frame.alpha =
 			state->ref_frame.cr + size / chroma_div;
 	else
 		state->ref_frame.alpha = NULL;
-
-	ctx->last_src_buf = NULL;
-	ctx->last_dst_buf = NULL;
-	state->gop_cnt = 0;
-	ctx->cur_buf_offset = 0;
-	ctx->comp_size = 0;
-	ctx->header_size = 0;
-	ctx->comp_magic_cnt = 0;
-	ctx->comp_has_frame = false;
-
 	return 0;
 }
 

@@ -1161,11 +1375,21 @@ static void vicodec_stop_streaming(struct vb2_queue *q)
 
 	vicodec_return_bufs(q, VB2_BUF_STATE_ERROR);
 
-	if (!V4L2_TYPE_IS_OUTPUT(q->type))
-		return;
-
-	kvfree(ctx->state.ref_frame.luma);
-	kvfree(ctx->state.compressed_frame);
+	if ((!V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) ||
+	    (V4L2_TYPE_IS_OUTPUT(q->type) && ctx->is_enc)) {
+		kvfree(ctx->state.ref_frame.luma);
+		ctx->comp_max_size = 0;
+		ctx->source_changed = false;
+	}
+	if (V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) {
+		ctx->cur_buf_offset = 0;
+		ctx->comp_size = 0;
+		ctx->header_size = 0;
+		ctx->comp_magic_cnt = 0;
+		ctx->comp_frame_size = 0;
+		ctx->comp_has_frame = 0;
+		ctx->comp_has_next_frame = 0;
+	}
 }
 
 static const struct vb2_ops vicodec_qops = {

@@ -1317,16 +1541,17 @@ static int vicodec_open(struct file *file)
 	else
 		ctx->q_data[V4L2_M2M_SRC].sizeimage =
 			size + sizeof(struct fwht_cframe_hdr);
-	ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC];
-	ctx->q_data[V4L2_M2M_DST].info =
-		ctx->is_enc ? &pixfmt_fwht : v4l2_fwht_get_pixfmt(0);
-	size = 1280 * 720 * ctx->q_data[V4L2_M2M_DST].info->sizeimage_mult /
-		ctx->q_data[V4L2_M2M_DST].info->sizeimage_div;
-	if (ctx->is_enc)
-		ctx->q_data[V4L2_M2M_DST].sizeimage =
-			size + sizeof(struct fwht_cframe_hdr);
-	else
-		ctx->q_data[V4L2_M2M_DST].sizeimage = size;
+	if (ctx->is_enc) {
+		ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC];
+		ctx->q_data[V4L2_M2M_DST].info = &pixfmt_fwht;
+		ctx->q_data[V4L2_M2M_DST].sizeimage = 1280 * 720 *
+			ctx->q_data[V4L2_M2M_DST].info->sizeimage_mult /
+			ctx->q_data[V4L2_M2M_DST].info->sizeimage_div +
+			sizeof(struct fwht_cframe_hdr);
+	} else {
+		ctx->q_data[V4L2_M2M_DST].info = NULL;
+	}
+
 	ctx->state.colorspace = V4L2_COLORSPACE_REC709;
 
 	if (ctx->is_enc) {