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| author | Rui Wang <gtk_ruiwang@mediatek.com> | 2019-07-31 01:29:39 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-08-07 17:05:29 -0300 |
| commit | 00ab9c1a620dc29f3651d5b61ad12aa327d4dd12 (patch) | |
| tree | 45808d3b88e613ba774579e95525d14e27c28f8e /drivers/media/platform/mtk-vcodec | |
| parent | b40dc2bf3581748aa772ad2690bd6092b1fca8da (diff) | |
| download | linux-00ab9c1a620dc29f3651d5b61ad12aa327d4dd12.tar.gz | |
media: mtk-vcodec: Handle H264 error bitstreams
Error h264 bitstreams which picture info are out range of
decoder hardware specification, and no nal start code at the
beginning of the buffer, stop decoding and exit.
Signed-off-by: Rui Wang <gtk_ruiwang@mediatek.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/platform/mtk-vcodec')
| -rw-r--r-- | drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c b/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c index c5f8f1fca44c..49aa85a9bb5a 100644 --- a/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c +++ b/drivers/media/platform/mtk-vcodec/vdec/vdec_h264_if.c @@ -29,6 +29,9 @@ #define H264_MAX_FB_NUM 17 #define HDR_PARSING_BUF_SZ 1024 +#define DEC_ERR_RET(ret) ((ret) >> 16) +#define H264_ERR_NOT_VALID 3 + /** * struct h264_fb - h264 decode frame buffer information * @vdec_fb_va : virtual address of struct vdec_fb @@ -357,8 +360,11 @@ static int vdec_h264_decode(void *h_vdec, struct mtk_vcodec_mem *bs, buf = (unsigned char *)bs->va; buf_sz = bs->size; nal_start_idx = find_start_code(buf, buf_sz); - if (nal_start_idx < 0) + if (nal_start_idx < 0) { + mtk_vcodec_err(inst, "invalid nal start code"); + err = -EIO; goto err_free_fb_out; + } nal_start = buf[nal_start_idx]; nal_type = NAL_TYPE(buf[nal_start_idx]); @@ -382,8 +388,14 @@ static int vdec_h264_decode(void *h_vdec, struct mtk_vcodec_mem *bs, data[0] = buf_sz; data[1] = nal_start; err = vpu_dec_start(vpu, data, 2); - if (err) + if (err) { + if (err > 0 && (DEC_ERR_RET(err) == H264_ERR_NOT_VALID)) { + mtk_vcodec_err(inst, "- error bitstream - err = %d -", + err); + err = -EIO; + } goto err_free_fb_out; + } *res_chg = inst->vsi->dec.resolution_changed; if (*res_chg) { |