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[188.193.2.150]) by smtp.gmail.com with ESMTPSA id ck6sm7080961edb.18.2020.07.27.02.08.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Jul 2020 02:08:20 -0700 (PDT) From: Andreas Rheinhardt To: ffmpeg-devel@ffmpeg.org Date: Mon, 27 Jul 2020 11:08:09 +0200 Message-Id: <20200727090810.23794-4-andreas.rheinhardt@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200727090810.23794-1-andreas.rheinhardt@gmail.com> References: <20200727090810.23794-1-andreas.rheinhardt@gmail.com> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH v3 4/5] avcodec/cavsdec, h264*, hevc_parser: Use get_ue_golomb_31 where possible X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Andreas Rheinhardt Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" instead of get_ue_golomb(). The difference between the two is that the latter also has to take into account the case in which the read code is more than 9 bits (four preceding zeroes + at most five value bits) long, leading to more code. Signed-off-by: Andreas Rheinhardt --- libavcodec/cavsdec.c | 2 +- libavcodec/h264_parse.c | 4 ++-- libavcodec/h264_ps.c | 24 ++++++++++++------------ libavcodec/hevc_parser.c | 2 +- 4 files changed, 16 insertions(+), 16 deletions(-) diff --git a/libavcodec/cavsdec.c b/libavcodec/cavsdec.c index aaed807196..9c3825df38 100644 --- a/libavcodec/cavsdec.c +++ b/libavcodec/cavsdec.c @@ -676,7 +676,7 @@ static int decode_mb_i(AVSContext *h, int cbp_code) } h->pred_mode_Y[pos] = predpred; } - pred_mode_uv = get_ue_golomb(gb); + pred_mode_uv = get_ue_golomb_31(gb); if (pred_mode_uv > 6) { av_log(h->avctx, AV_LOG_ERROR, "illegal intra chroma pred mode\n"); return AVERROR_INVALIDDATA; diff --git a/libavcodec/h264_parse.c b/libavcodec/h264_parse.c index 352ffea948..1c1d1c04b0 100644 --- a/libavcodec/h264_parse.c +++ b/libavcodec/h264_parse.c @@ -35,7 +35,7 @@ int ff_h264_pred_weight_table(GetBitContext *gb, const SPS *sps, pwt->use_weight = 0; pwt->use_weight_chroma = 0; - pwt->luma_log2_weight_denom = get_ue_golomb(gb); + pwt->luma_log2_weight_denom = get_ue_golomb_31(gb); if (pwt->luma_log2_weight_denom > 7U) { av_log(logctx, AV_LOG_ERROR, "luma_log2_weight_denom %d is out of range\n", pwt->luma_log2_weight_denom); pwt->luma_log2_weight_denom = 0; @@ -43,7 +43,7 @@ int ff_h264_pred_weight_table(GetBitContext *gb, const SPS *sps, luma_def = 1 << pwt->luma_log2_weight_denom; if (sps->chroma_format_idc) { - pwt->chroma_log2_weight_denom = get_ue_golomb(gb); + pwt->chroma_log2_weight_denom = get_ue_golomb_31(gb); if (pwt->chroma_log2_weight_denom > 7U) { av_log(logctx, AV_LOG_ERROR, "chroma_log2_weight_denom %d is out of range\n", pwt->chroma_log2_weight_denom); pwt->chroma_log2_weight_denom = 0; diff --git a/libavcodec/h264_ps.c b/libavcodec/h264_ps.c index e774929e21..e21c2b56ac 100644 --- a/libavcodec/h264_ps.c +++ b/libavcodec/h264_ps.c @@ -181,8 +181,8 @@ static inline int decode_vui_parameters(GetBitContext *gb, void *logctx, /* chroma_location_info_present_flag */ if (get_bits1(gb)) { /* chroma_sample_location_type_top_field */ - sps->chroma_location = get_ue_golomb(gb) + 1; - get_ue_golomb(gb); /* chroma_sample_location_type_bottom_field */ + sps->chroma_location = get_ue_golomb_31(gb) + 1; + get_ue_golomb_31(gb); /* chroma_sample_location_type_bottom_field */ } else sps->chroma_location = AVCHROMA_LOC_LEFT; @@ -224,12 +224,12 @@ static inline int decode_vui_parameters(GetBitContext *gb, void *logctx, sps->bitstream_restriction_flag = get_bits1(gb); if (sps->bitstream_restriction_flag) { get_bits1(gb); /* motion_vectors_over_pic_boundaries_flag */ - get_ue_golomb(gb); /* max_bytes_per_pic_denom */ - get_ue_golomb(gb); /* max_bits_per_mb_denom */ - get_ue_golomb(gb); /* log2_max_mv_length_horizontal */ - get_ue_golomb(gb); /* log2_max_mv_length_vertical */ - sps->num_reorder_frames = get_ue_golomb(gb); - get_ue_golomb(gb); /*max_dec_frame_buffering*/ + get_ue_golomb_31(gb); /* max_bytes_per_pic_denom */ + get_ue_golomb_31(gb); /* max_bits_per_mb_denom */ + get_ue_golomb_31(gb); /* log2_max_mv_length_horizontal */ + get_ue_golomb_31(gb); /* log2_max_mv_length_vertical */ + sps->num_reorder_frames = get_ue_golomb_31(gb); + get_ue_golomb_31(gb); /*max_dec_frame_buffering*/ if (get_bits_left(gb) < 0) { sps->num_reorder_frames = 0; @@ -403,8 +403,8 @@ int ff_h264_decode_seq_parameter_set(GetBitContext *gb, AVCodecContext *avctx, goto fail; } } - sps->bit_depth_luma = get_ue_golomb(gb) + 8; - sps->bit_depth_chroma = get_ue_golomb(gb) + 8; + sps->bit_depth_luma = get_ue_golomb_31(gb) + 8; + sps->bit_depth_chroma = get_ue_golomb_31(gb) + 8; if (sps->bit_depth_chroma != sps->bit_depth_luma) { avpriv_request_sample(avctx, "Different chroma and luma bit depth"); @@ -428,7 +428,7 @@ int ff_h264_decode_seq_parameter_set(GetBitContext *gb, AVCodecContext *avctx, sps->bit_depth_chroma = 8; } - log2_max_frame_num_minus4 = get_ue_golomb(gb); + log2_max_frame_num_minus4 = get_ue_golomb_31(gb); if (log2_max_frame_num_minus4 < MIN_LOG2_MAX_FRAME_NUM - 4 || log2_max_frame_num_minus4 > MAX_LOG2_MAX_FRAME_NUM - 4) { av_log(avctx, AV_LOG_ERROR, @@ -441,7 +441,7 @@ int ff_h264_decode_seq_parameter_set(GetBitContext *gb, AVCodecContext *avctx, sps->poc_type = get_ue_golomb_31(gb); if (sps->poc_type == 0) { // FIXME #define - unsigned t = get_ue_golomb(gb); + unsigned t = get_ue_golomb_31(gb); if (t>12) { av_log(avctx, AV_LOG_ERROR, "log2_max_poc_lsb (%d) is out of range\n", t); goto fail; diff --git a/libavcodec/hevc_parser.c b/libavcodec/hevc_parser.c index 5af4b788d5..463d352055 100644 --- a/libavcodec/hevc_parser.c +++ b/libavcodec/hevc_parser.c @@ -136,7 +136,7 @@ static int hevc_parse_slice_header(AVCodecParserContext *s, H2645NAL *nal, for (i = 0; i < ps->pps->num_extra_slice_header_bits; i++) skip_bits(gb, 1); // slice_reserved_undetermined_flag[] - slice_type = get_ue_golomb(gb); + slice_type = get_ue_golomb_31(gb); if (!(slice_type == HEVC_SLICE_I || slice_type == HEVC_SLICE_P || slice_type == HEVC_SLICE_B)) { av_log(avctx, AV_LOG_ERROR, "Unknown slice type: %d.\n",