Quoting Lynne (2023-02-17 04:43:50)
> From 1279c6011c610fdb054cd9eea7a6f07c94f69f29 Mon Sep 17 00:00:00 2001
> From: Lynne <d...@lynne.ee>
> Date: Wed, 14 Dec 2022 00:09:08 +0100
> Subject: [PATCH 08/72] h264_ps: expose bit rate and CPB size fields
>
> ---
> libavcodec/h264_ps.c | 8 ++++----
> libavcodec/h264_ps.h | 4 ++++
> 2 files changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/libavcodec/h264_ps.c b/libavcodec/h264_ps.c
> index d9df570718..fc8715876a 100644
> --- a/libavcodec/h264_ps.c
> +++ b/libavcodec/h264_ps.c
> @@ -113,12 +113,12 @@ static inline int decode_hrd_parameters(GetBitContext
> *gb, void *logctx,
> return AVERROR_INVALIDDATA;
> }
>
> - get_bits(gb, 4); /* bit_rate_scale */
> + sps->bit_rate_scale = get_bits(gb, 4);
> get_bits(gb, 4); /* cpb_size_scale */
> for (i = 0; i < cpb_count; i++) {
> - get_ue_golomb_long(gb); /* bit_rate_value_minus1 */
> - get_ue_golomb_long(gb); /* cpb_size_value_minus1 */
> - get_bits1(gb); /* cbr_flag */
> + sps->bit_rate_value[i] = get_ue_golomb_long(gb) + 1; /*
> bit_rate_value_minus1 + 1 */
> + sps->cpb_size_value[i] = get_ue_golomb_long(gb) + 1; /*
> cpb_size_value_minus1 + 1 */
> + sps->cpr_flag[i] = get_bits1(gb);
> }
> sps->initial_cpb_removal_delay_length = get_bits(gb, 5) + 1;
> sps->cpb_removal_delay_length = get_bits(gb, 5) + 1;
> diff --git a/libavcodec/h264_ps.h b/libavcodec/h264_ps.h
> index 906bab7214..03bd0227d6 100644
> --- a/libavcodec/h264_ps.h
> +++ b/libavcodec/h264_ps.h
> @@ -89,6 +89,10 @@ typedef struct SPS {
> int pic_struct_present_flag;
> int time_offset_length;
> int cpb_cnt; ///< See H.264 E.1.2
> + int bit_rate_scale;
> + uint32_t bit_rate_value[32]; ///< bit_rate_value_minus1 + 1
> + uint32_t cpb_size_value[32]; ///< cpb_size_value_minus1 + 1
> + uint8_t cpr_flag[32];
If only there was a way to store 32 flags in less than 32 bytes.
--
Anton Khirnov
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