avcodec/mpegvideo: Move quant_precision to Mpeg4DecContext
It is an MPEG-4-only value; it is always five for the MPEG-4 encoder, so just hardcode this value and move the MpegEncContext field to Mpeg4DecContext. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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@ -99,7 +99,6 @@ av_cold int ff_h263_decode_init(AVCodecContext *avctx)
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if (ret < 0)
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return ret;
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s->quant_precision = 5;
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s->decode_mb = ff_h263_decode_mb;
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s->low_delay = 1;
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@ -122,7 +122,7 @@ static av_cold int mpeg4video_parse_init(AVCodecParserContext *s)
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struct Mp4vParseContext *pc = s->priv_data;
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pc->first_picture = 1;
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pc->dec_ctx.m.quant_precision = 5;
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pc->dec_ctx.quant_precision = 5;
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pc->dec_ctx.m.slice_context_count = 1;
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pc->dec_ctx.showed_packed_warning = 1;
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return 0;
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@ -728,7 +728,7 @@ int ff_mpeg4_decode_video_packet_header(Mpeg4DecContext *ctx)
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s->mb_y = mb_num / s->mb_width;
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if (ctx->shape != BIN_ONLY_SHAPE) {
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int qscale = get_bits(&s->gb, s->quant_precision);
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int qscale = get_bits(&s->gb, ctx->quant_precision);
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if (qscale)
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s->chroma_qscale = s->qscale = qscale;
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}
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@ -2706,17 +2706,16 @@ static int decode_vol_header(Mpeg4DecContext *ctx, GetBitContext *gb)
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// FIXME sadct disable bit if verid!=1 && shape not rect
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if (get_bits1(gb) == 1) { /* not_8_bit */
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s->quant_precision = get_bits(gb, 4); /* quant_precision */
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ctx->quant_precision = get_bits(gb, 4); /* quant_precision */
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if (get_bits(gb, 4) != 8) /* bits_per_pixel */
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av_log(s->avctx, AV_LOG_ERROR, "N-bit not supported\n");
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if (s->quant_precision != 5)
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if (ctx->quant_precision != 5)
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av_log(s->avctx, AV_LOG_ERROR,
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"quant precision %d\n", s->quant_precision);
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if (s->quant_precision<3 || s->quant_precision>9) {
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s->quant_precision = 5;
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}
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"quant precision %d\n", ctx->quant_precision);
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if (ctx->quant_precision < 3 || ctx->quant_precision > 9)
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ctx->quant_precision = 5;
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} else {
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s->quant_precision = 5;
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ctx->quant_precision = 5;
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}
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// FIXME a bunch of grayscale shape things
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@ -2904,7 +2903,7 @@ no_cplx_est:
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av_log(s->avctx, AV_LOG_DEBUG, "tb %d/%d, tincrbits:%d, qp_prec:%d, ps:%d, low_delay:%d %s%s%s%s\n",
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s->avctx->framerate.den, s->avctx->framerate.num,
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ctx->time_increment_bits,
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s->quant_precision,
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ctx->quant_precision,
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s->progressive_sequence,
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s->low_delay,
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ctx->scalability ? "scalability " :"" , s->quarter_sample ? "qpel " : "",
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@ -3286,7 +3285,7 @@ static int decode_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb,
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}
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if (ctx->shape != BIN_ONLY_SHAPE) {
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s->chroma_qscale = s->qscale = get_bits(gb, s->quant_precision);
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s->chroma_qscale = s->qscale = get_bits(gb, ctx->quant_precision);
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if (s->qscale == 0) {
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av_log(s->avctx, AV_LOG_ERROR,
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"Error, header damaged or not MPEG-4 header (qscale=0)\n");
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@ -3798,6 +3797,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
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s->low_delay = 0; /* default, might be overridden in the vol header during header parsing */
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s->decode_mb = mpeg4_decode_mb;
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ctx->time_increment_bits = 4; /* default value for broken headers */
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ctx->quant_precision = 5;
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avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
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@ -60,6 +60,8 @@ typedef struct Mpeg4DecContext {
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int enhancement_type;
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int scalability;
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int quant_precision;
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/// QP above which the ac VLC should be used for intra dc
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int intra_dc_threshold;
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@ -1358,7 +1358,7 @@ void ff_mpeg4_encode_video_packet_header(MpegEncContext *s)
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put_bits(&s->pb, 1, 1);
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put_bits(&s->pb, mb_num_bits, s->mb_x + s->mb_y * s->mb_width);
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put_bits(&s->pb, s->quant_precision, s->qscale);
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put_bits(&s->pb, 5 /* quant_precision */, s->qscale);
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put_bits(&s->pb, 1, 0); /* no HEC */
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}
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@ -384,7 +384,6 @@ typedef struct MpegEncContext {
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uint16_t pp_field_time;
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uint16_t pb_field_time; ///< like above, just for interlaced
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int mcsel;
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int quant_precision;
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int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
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int data_partitioning; ///< data partitioning flag from header
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int partitioned_frame; ///< is current frame partitioned
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@ -951,8 +951,6 @@ av_cold int ff_mpv_encode_init(AVCodecContext *avctx)
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s->h263_slice_structured = 1;
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}
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s->quant_precision = 5;
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if (CONFIG_H263_ENCODER && s->out_format == FMT_H263) {
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ff_h263_encode_init(s);
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#if CONFIG_MSMPEG4ENC
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@ -74,7 +74,7 @@ static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_
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.resync_marker_disable = !ctx->resync_marker,
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},
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.no_of_sprite_warping_points = ctx->num_sprite_warping_points,
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.quant_precision = s->quant_precision,
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.quant_precision = ctx->quant_precision,
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.vop_fields.bits = {
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.vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I,
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.backward_reference_vop_coding_type =
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