[FFmpeg-devel] [PATCH 04/12] all: Use put_bytes_output() instead of put_bits_ptr - pb->buf

Andreas Rheinhardt andreas.rheinhardt at outlook.com
Sun Mar 9 20:18:34 EET 2025


Andreas Rheinhardt:
> Avoids accessing internals of PutBitContext.
> 
> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at outlook.com>
> ---
>  libavcodec/ljpegenc.c           | 2 +-
>  libavcodec/proresenc_anatoliy.c | 2 +-
>  libavcodec/wmaenc.c             | 2 +-
>  libavformat/mpegenc.c           | 4 ++--
>  libavformat/swfenc.c            | 6 +++---
>  5 files changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/libavcodec/ljpegenc.c b/libavcodec/ljpegenc.c
> index 46546e2160..3443951af5 100644
> --- a/libavcodec/ljpegenc.c
> +++ b/libavcodec/ljpegenc.c
> @@ -252,7 +252,7 @@ static int ljpeg_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
>      ff_mjpeg_encode_picture_trailer(&pb, header_bits);
>  
>      flush_put_bits(&pb);
> -    pkt->size   = put_bits_ptr(&pb) - pb.buf;
> +    pkt->size   = put_bytes_output(&pb);
>      *got_packet = 1;
>  
>      return 0;
> diff --git a/libavcodec/proresenc_anatoliy.c b/libavcodec/proresenc_anatoliy.c
> index 7b7618af9b..6ddb799297 100644
> --- a/libavcodec/proresenc_anatoliy.c
> +++ b/libavcodec/proresenc_anatoliy.c
> @@ -382,7 +382,7 @@ static int encode_slice_plane(int16_t *blocks, int mb_count, uint8_t *buf, unsig
>      encode_acs(&pb, blocks, blocks_per_slice, qmat, scan);
>  
>      flush_put_bits(&pb);
> -    return put_bits_ptr(&pb) - pb.buf;
> +    return put_bytes_output(&pb);
>  }
>  
>  static av_always_inline unsigned encode_slice_data(AVCodecContext *avctx,
> diff --git a/libavcodec/wmaenc.c b/libavcodec/wmaenc.c
> index 6949f08fb6..eaf0498ea2 100644
> --- a/libavcodec/wmaenc.c
> +++ b/libavcodec/wmaenc.c
> @@ -425,7 +425,7 @@ static int encode_superframe(AVCodecContext *avctx, AVPacket *avpkt,
>          put_bits(&s->pb, 8, 'N');
>  
>      flush_put_bits(&s->pb);
> -    av_assert0(put_bits_ptr(&s->pb) - s->pb.buf == avctx->block_align);
> +    av_assert0(put_bytes_output(&s->pb) == avctx->block_align);
>  
>      if (frame->pts != AV_NOPTS_VALUE)
>          avpkt->pts = frame->pts - ff_samples_to_time_base(avctx, avctx->initial_padding);
> diff --git a/libavformat/mpegenc.c b/libavformat/mpegenc.c
> index 6b6763c30f..068bc9d71e 100644
> --- a/libavformat/mpegenc.c
> +++ b/libavformat/mpegenc.c
> @@ -124,7 +124,7 @@ static int put_pack_header(AVFormatContext *ctx, uint8_t *buf,
>          put_bits(&pb, 3, 0); /* stuffing length */
>      }
>      flush_put_bits(&pb);
> -    return put_bits_ptr(&pb) - pb.buf;
> +    return put_bytes_output(&pb);
>  }
>  
>  static int put_system_header(AVFormatContext *ctx, uint8_t *buf,
> @@ -269,7 +269,7 @@ static int put_system_header(AVFormatContext *ctx, uint8_t *buf,
>      }
>  
>      flush_put_bits(&pb);
> -    size = put_bits_ptr(&pb) - pb.buf;
> +    size = put_bytes_output(&pb);
>      /* patch packet size */
>      AV_WB16(buf + 4, size - 6);
>  
> diff --git a/libavformat/swfenc.c b/libavformat/swfenc.c
> index d106e16d19..fc883b8023 100644
> --- a/libavformat/swfenc.c
> +++ b/libavformat/swfenc.c
> @@ -124,7 +124,7 @@ static void put_swf_rect(AVIOContext *pb,
>      put_bits(&p, nbits, ymax & mask);
>  
>      flush_put_bits(&p);
> -    avio_write(pb, buf, put_bits_ptr(&p) - p.buf);
> +    avio_write(pb, buf, put_bytes_output(&p));
>  }
>  
>  static void put_swf_line_edge(PutBitContext *pb, int dx, int dy)
> @@ -189,7 +189,7 @@ static void put_swf_matrix(AVIOContext *pb,
>      put_bits(&p, nbits, ty);
>  
>      flush_put_bits(&p);
> -    avio_write(pb, buf, put_bits_ptr(&p) - p.buf);
> +    avio_write(pb, buf, put_bytes_output(&p));
>  }
>  
>  static int swf_write_header(AVFormatContext *s)
> @@ -323,7 +323,7 @@ static int swf_write_header(AVFormatContext *s)
>          put_bits(&p, 5, 0);
>  
>          flush_put_bits(&p);
> -        avio_write(pb, buf1, put_bits_ptr(&p) - p.buf);
> +        avio_write(pb, buf1, put_bytes_output(&p));
>  
>          put_swf_end_tag(s);
>      }

Will apply tomorrow unless there are objections.

- Andreas



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