diff --git a/libavcodec/v4l2_context.c b/libavcodec/v4l2_context.c index 297792f871..9f3b56ddab 100644 --- a/libavcodec/v4l2_context.c +++ b/libavcodec/v4l2_context.c @@ -90,6 +90,20 @@ static inline int v4l2_type_supported(V4L2Context *ctx) ctx->type == V4L2_BUF_TYPE_VIDEO_OUTPUT; } +static inline int v4l2_get_framesize_compressed(V4L2Context* ctx, int width, int height) +{ + V4L2m2mContext *s = ctx_to_m2mctx(ctx); + const int SZ_4K = 0x1000; + int size; + + if (av_codec_is_decoder(s->avctx->codec)) + return ((width * height * 3 / 2) / 2) + 128; + + /* encoder */ + size = FFALIGN(height, 32) * FFALIGN(width, 32) * 3 / 2 / 2; + return FFALIGN(size, SZ_4K); +} + static inline void v4l2_save_to_context(V4L2Context* ctx, struct v4l2_format_update *fmt) { ctx->format.type = ctx->type; @@ -101,13 +115,23 @@ static inline void v4l2_save_to_context(V4L2Context* ctx, struct v4l2_format_upd /* update the sizes to handle the reconfiguration of the capture stream at runtime */ ctx->format.fmt.pix_mp.height = ctx->height; ctx->format.fmt.pix_mp.width = ctx->width; - if (fmt->update_v4l2) + if (fmt->update_v4l2) { ctx->format.fmt.pix_mp.pixelformat = fmt->v4l2_fmt; + + /* s5p-mfc requires the user to specify a buffer size */ + ctx->format.fmt.pix_mp.plane_fmt[0].sizeimage = + v4l2_get_framesize_compressed(ctx, ctx->width, ctx->height); + } } else { ctx->format.fmt.pix.height = ctx->height; ctx->format.fmt.pix.width = ctx->width; - if (fmt->update_v4l2) + if (fmt->update_v4l2) { ctx->format.fmt.pix.pixelformat = fmt->v4l2_fmt; + + /* s5p-mfc requires the user to specify a buffer size */ + ctx->format.fmt.pix.sizeimage = + v4l2_get_framesize_compressed(ctx, ctx->width, ctx->height); + } } }