On Sat, Jul 25, 2015 at 3:26 PM, Luca Barbato <[email protected]> wrote:
> Useful while debugging.
> ---
> libavcodec/hevc_sei.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 47 insertions(+)
>
> diff --git a/libavcodec/hevc_sei.c b/libavcodec/hevc_sei.c
> index ade97e8..a3fa41a 100644
> --- a/libavcodec/hevc_sei.c
> +++ b/libavcodec/hevc_sei.c
> @@ -53,6 +53,16 @@ enum HEVC_SEI_TYPE {
> SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO = 144,
> };
>
> +static const uint8_t x265_info_uuid[16] = {
> + 0x2C, 0xA2, 0xDE, 0x09, 0xB5, 0x17, 0x47, 0xDB,
> + 0xBB, 0x55, 0xA4, 0xFE, 0x7F, 0xC2, 0xFC, 0x4E
> +};
> +
> +static const uint8_t kvazaar_info_uuid[16] = {
> + 0x32, 0xfe, 0x46, 0x6c, 0x98, 0x41, 0x42, 0x69,
> + 0xae, 0x35, 0x6a, 0x91, 0x54, 0x9e, 0xf3, 0xf1
> +};
> +
> static int decode_nal_sei_decoded_picture_hash(HEVCContext *s)
> {
> int cIdx, i;
> @@ -118,6 +128,41 @@ static int
> decode_nal_sei_display_orientation(HEVCContext *s)
> return 0;
> }
>
> +static int decode_nal_sei_unregistered(HEVCContext *s, int size)
> +{
> + GetBitContext *gb = &s->HEVClc.gb;
> + uint8_t uuid[16];
> + int i;
> +
> + if (size < 16)
> + return AVERROR_INVALIDDATA;
> +
> + for (i = 0; i < sizeof(uuid); i++)
> + uuid[i] = get_bits(gb, 8);
> +
> + size -= 16;
> +
> + if (!memcmp(uuid, x265_info_uuid, sizeof(uuid)) ||
> + !memcmp(uuid, kvazaar_info_uuid, sizeof(uuid))) {
> + uint8_t info[1000] = { 0 };
> +
> + for (i = 0; i < sizeof(info) - 1 && i < size; i++)
> + info[i] = get_bits(gb, 8);
> +
> + av_log(s->avctx, AV_LOG_VERBOSE,
> + "Encoder Info:\n%s\n",
> + info);
Printing random bytes as string from a bitstream is not safe.
> +
> + for (; i < size; i++)
> + skip_bits(gb, 8);
> + }
> +
> + if (size)
> + skip_bits_long(gb, 8 * size);
> +
> + return 0;
> +}
> +
> static int decode_nal_sei_prefix(HEVCContext *s, int type, int size)
> {
> GetBitContext *gb = &s->HEVClc.gb;
> @@ -130,6 +175,8 @@ static int decode_nal_sei_prefix(HEVCContext *s, int
> type, int size)
> return decode_nal_sei_frame_packing_arrangement(s);
> case SEI_TYPE_DISPLAY_ORIENTATION:
> return decode_nal_sei_display_orientation(s);
> + case SEI_TYPE_USER_DATA_UNREGISTERED:
> + return decode_nal_sei_unregistered(s, size);
> default:
> av_log(s->avctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
> skip_bits_long(gb, 8 * size);
> --
> 2.3.2
>
> _______________________________________________
> libav-devel mailing list
> [email protected]
> https://lists.libav.org/mailman/listinfo/libav-devel
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