Re: [FFmpeg-devel] [PATCH v2] avcodec/cbs_vp8: Apply clang-format and fix typos.

[Andreas Rheinhardt <andreas.rheinhardt@outlook.com>]

Dai, Jianhui J:
> This commit applies clang-format to the source and fixes typos.
> 
> TETS: ffmpeg -i fate-suite/vp8-test-vectors-r1/* -vcodec copy -bsf:v
> trace_headers -f null -
> 
> Signed-off-by: Jianhui Dai <jianhui.j.dai@intel.com>
> ---
>  libavcodec/cbs_vp8.c | 52 ++++++++++++++++++++++++++++++--------------
>  1 file changed, 36 insertions(+), 16 deletions(-)
> 
> diff --git a/libavcodec/cbs_vp8.c b/libavcodec/cbs_vp8.c
> index 065156c248..5e6468d1b4 100644
> --- a/libavcodec/cbs_vp8.c
> +++ b/libavcodec/cbs_vp8.c
> @@ -33,22 +33,22 @@ extern const uint8_t ff_vp8_token_update_probs[4][8][3][11];
>  typedef struct CBSVP8BoolDecoder {
>      GetBitContext *gbc;
>  
> -    uint8_t value;
>      uint8_t range;
>  
> -    uint8_t count; // Store the number of bits in the `value` buffer.
> -
> +    uint8_t value;
> +    // Store the number of bits in the `value` buffer.
> +    uint8_t count;
>  } CBSVP8BoolDecoder;
>  
> -static int cbs_vp8_bool_decoder_init(CBSVP8BoolDecoder *decoder, GetBitContext *gbc)
> +static int cbs_vp8_bool_decoder_init(CBSVP8BoolDecoder *decoder,
> +                                     GetBitContext *gbc)
>  {
>      av_assert0(decoder);
>      av_assert0(gbc);
>  
>      decoder->gbc = gbc;
> -    decoder->value = 0;
>      decoder->range = 255;
> -
> +    decoder->value = 0;
>      decoder->count = 0;
>  
>      return 0;
> @@ -60,7 +60,7 @@ static bool cbs_vp8_bool_decoder_fill_value(CBSVP8BoolDecoder *decoder)
>  
>      av_assert0(decoder->count <= 8);
>      if (decoder->count == 8) {
> -      return true;
> +        return true;
>      }
>  
>      if (get_bits_left(decoder->gbc) >= bits) {
> @@ -141,7 +141,7 @@ static int cbs_vp8_bool_decoder_read_unsigned(
>      }
>  
>      if (trace_enable) {
> -      CBS_TRACE_READ_END();
> +        CBS_TRACE_READ_END();
>      }
>  
>      *write_to = value;
> @@ -181,9 +181,11 @@ static int cbs_vp8_bool_decoder_read_signed(
>      return 0;
>  }
>  
> -static int cbs_vp8_read_unsigned_le(CodedBitstreamContext *ctx, GetBitContext *gbc,
> -                                 int width, const char *name,
> -                                 const int *subscripts, uint32_t *write_to)
> +static int cbs_vp8_read_unsigned_le(CodedBitstreamContext *ctx,
> +                                    GetBitContext *gbc, int width,
> +                                    const char *name, const int *subscripts,
> +                                    uint32_t *write_to, uint32_t range_min,
> +                                    uint32_t range_max)
>  {
>      int32_t value;
>  
> @@ -200,6 +202,14 @@ static int cbs_vp8_read_unsigned_le(CodedBitstreamContext *ctx, GetBitContext *g
>  
>      CBS_TRACE_READ_END();
>  
> +    if (value < range_min || value > range_max) {
> +        av_log(ctx->log_ctx, AV_LOG_ERROR,
> +               "%s out of range: "
> +               "%" PRIu32 ", but must be in [%" PRIu32 ",%" PRIu32 "].\n",
> +               name, value, range_min, range_max);
> +        return AVERROR_INVALIDDATA;
> +    }
> +

This is something completely different than what the commit message says
this patch does.

>      *write_to = value;
>      return 0;
>  }
> @@ -246,15 +256,16 @@ static int cbs_vp8_read_unsigned_le(CodedBitstreamContext *ctx, GetBitContext *g
>      do { \
>          uint32_t value; \
>          CHECK(cbs_vp8_read_unsigned_le(ctx, rw, width, #name, \
> -                                    SUBSCRIPTS(subs, __VA_ARGS__), &value)); \
> +                                       SUBSCRIPTS(subs, __VA_ARGS__), &value, \
> +                                       0, MAX_UINT_BITS(width))); \
>          current->name = value; \
>      } while (0)
>  
>  #define fixed(width, name, value) \
>      do { \
>          uint32_t fixed_value; \
> -        CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, 0, &fixed_value, \
> -                                   value, value)); \
> +        CHECK(cbs_vp8_read_unsigned_le(ctx, rw, width, #name, 0, &fixed_value, \
> +                                       value, value)); \
>      } while (0)
>  
>  #define bc_unsigned_subs(width, prob, enable_trace, name, subs, ...) \
> @@ -277,6 +288,15 @@ static int cbs_vp8_read_unsigned_le(CodedBitstreamContext *ctx, GetBitContext *g
>  
>  #include "cbs_vp8_syntax_template.c"
>  
> +#undef READ
> +#undef READWRITE
> +#undef RWContext
> +#undef CBSVP8BoolCodingRW
> +#undef xf
> +#undef fixed
> +#undef bc_unsigned_subs
> +#undef bc_signed_subs
> +
>  static int cbs_vp8_split_fragment(CodedBitstreamContext *ctx,
>                                    CodedBitstreamFragment *frag, int header)
>  {
> @@ -328,8 +348,7 @@ static int cbs_vp8_read_unit(CodedBitstreamContext *ctx,
>          return err;
>  
>      pos = get_bits_count(&gbc);
> -    pos /= 8;
> -    av_assert0(pos <= unit->data_size);
> +    av_assert0(pos <= unit->data_size * 8);
>  
>      frame->data_ref = av_buffer_ref(unit->data_ref);
>      if (!frame->data_ref)
> @@ -363,6 +382,7 @@ static const CodedBitstreamUnitTypeDescriptor cbs_vp8_unit_types[] = {
>      CBS_UNIT_TYPE_END_OF_LIST,
>  };
>  
> +// clang-format off

Such comments do not belong in our codebase.

>  const CodedBitstreamType ff_cbs_type_vp8 = {
>      .codec_id          = AV_CODEC_ID_VP8,
>  

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