mirror of https://git.ffmpeg.org/ffmpeg.git
728 lines
25 KiB
C
728 lines
25 KiB
C
/*
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* VC3/DNxHD decoder.
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* Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
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* Copyright (c) 2011 MirriAd Ltd
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* Copyright (c) 2015 Christophe Gisquet
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*
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* 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com>
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* Slice multithreading and MB interlaced support added by Christophe Gisquet
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/imgutils.h"
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#include "libavutil/timer.h"
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#include "avcodec.h"
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#include "blockdsp.h"
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#define UNCHECKED_BITSTREAM_READER 1
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#include "get_bits.h"
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#include "dnxhddata.h"
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#include "idctdsp.h"
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#include "internal.h"
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#include "profiles.h"
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#include "thread.h"
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typedef struct RowContext {
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DECLARE_ALIGNED(16, int16_t, blocks)[12][64];
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int luma_scale[64];
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int chroma_scale[64];
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GetBitContext gb;
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int last_dc[3];
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int last_qscale;
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int errors;
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/** -1:not set yet 0:off=RGB 1:on=YUV 2:variable */
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int format;
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} RowContext;
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typedef struct DNXHDContext {
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AVCodecContext *avctx;
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RowContext *rows;
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BlockDSPContext bdsp;
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const uint8_t* buf;
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int buf_size;
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int64_t cid; ///< compression id
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unsigned int width, height;
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enum AVPixelFormat pix_fmt;
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unsigned int mb_width, mb_height;
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uint32_t mb_scan_index[512];
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int data_offset; // End of mb_scan_index, where macroblocks start
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int cur_field; ///< current interlaced field
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VLC ac_vlc, dc_vlc, run_vlc;
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IDCTDSPContext idsp;
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ScanTable scantable;
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const CIDEntry *cid_table;
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int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
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int is_444;
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int mbaff;
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int act;
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int (*decode_dct_block)(const struct DNXHDContext *ctx,
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RowContext *row, int n);
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} DNXHDContext;
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#define DNXHD_VLC_BITS 9
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#define DNXHD_DC_VLC_BITS 7
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static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
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RowContext *row, int n);
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static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
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RowContext *row, int n);
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static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
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RowContext *row, int n);
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static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
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RowContext *row, int n);
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static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
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RowContext *row, int n);
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static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
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{
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DNXHDContext *ctx = avctx->priv_data;
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ctx->avctx = avctx;
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ctx->cid = -1;
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if (avctx->colorspace == AVCOL_SPC_UNSPECIFIED) {
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avctx->colorspace = AVCOL_SPC_BT709;
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}
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avctx->coded_width = FFALIGN(avctx->width, 16);
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avctx->coded_height = FFALIGN(avctx->height, 16);
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ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
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if (!ctx->rows)
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return AVERROR(ENOMEM);
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return 0;
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}
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static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
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{
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if (cid != ctx->cid) {
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int index;
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if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
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av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid);
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return AVERROR(ENOSYS);
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}
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if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
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ff_dnxhd_cid_table[index].bit_depth != DNXHD_VARIABLE) {
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av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, bitdepth);
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return AVERROR_INVALIDDATA;
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}
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ctx->cid_table = &ff_dnxhd_cid_table[index];
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av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid);
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ff_free_vlc(&ctx->ac_vlc);
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ff_free_vlc(&ctx->dc_vlc);
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ff_free_vlc(&ctx->run_vlc);
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init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
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ctx->cid_table->ac_bits, 1, 1,
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ctx->cid_table->ac_codes, 2, 2, 0);
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init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
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ctx->cid_table->dc_bits, 1, 1,
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ctx->cid_table->dc_codes, 1, 1, 0);
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init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
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ctx->cid_table->run_bits, 1, 1,
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ctx->cid_table->run_codes, 2, 2, 0);
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ctx->cid = cid;
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}
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return 0;
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}
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static av_cold int dnxhd_decode_init_thread_copy(AVCodecContext *avctx)
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{
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DNXHDContext *ctx = avctx->priv_data;
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ctx->avctx = avctx;
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// make sure VLC tables will be loaded when cid is parsed
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ctx->cid = -1;
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ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
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if (!ctx->rows)
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return AVERROR(ENOMEM);
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return 0;
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}
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static int dnxhd_get_profile(int cid)
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{
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switch(cid) {
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case 1270:
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return FF_PROFILE_DNXHR_444;
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case 1271:
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return FF_PROFILE_DNXHR_HQX;
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case 1272:
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return FF_PROFILE_DNXHR_HQ;
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case 1273:
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return FF_PROFILE_DNXHR_SQ;
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case 1274:
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return FF_PROFILE_DNXHR_LB;
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}
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return FF_PROFILE_DNXHD;
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}
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static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
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const uint8_t *buf, int buf_size,
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int first_field)
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{
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int i, cid, ret;
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int old_bit_depth = ctx->bit_depth, bitdepth;
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uint64_t header_prefix;
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if (buf_size < 0x280) {
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av_log(ctx->avctx, AV_LOG_ERROR,
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"buffer too small (%d < 640).\n", buf_size);
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return AVERROR_INVALIDDATA;
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}
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header_prefix = ff_dnxhd_parse_header_prefix(buf);
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if (header_prefix == 0) {
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av_log(ctx->avctx, AV_LOG_ERROR,
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"unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
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buf[0], buf[1], buf[2], buf[3], buf[4]);
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return AVERROR_INVALIDDATA;
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}
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if (buf[5] & 2) { /* interlaced */
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ctx->cur_field = buf[5] & 1;
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frame->interlaced_frame = 1;
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frame->top_field_first = first_field ^ ctx->cur_field;
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av_log(ctx->avctx, AV_LOG_DEBUG,
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"interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
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} else {
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ctx->cur_field = 0;
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}
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ctx->mbaff = (buf[0x6] >> 5) & 1;
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ctx->height = AV_RB16(buf + 0x18);
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ctx->width = AV_RB16(buf + 0x1a);
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switch(buf[0x21] >> 5) {
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case 1: bitdepth = 8; break;
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case 2: bitdepth = 10; break;
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case 3: bitdepth = 12; break;
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default:
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av_log(ctx->avctx, AV_LOG_ERROR,
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"Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
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return AVERROR_INVALIDDATA;
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}
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cid = AV_RB32(buf + 0x28);
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ctx->avctx->profile = dnxhd_get_profile(cid);
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if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
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return ret;
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if (ctx->mbaff && ctx->cid_table->cid != 1260)
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av_log(ctx->avctx, AV_LOG_WARNING,
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"Adaptive MB interlace flag in an unsupported profile.\n");
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ctx->act = buf[0x2C] & 7;
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if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
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av_log(ctx->avctx, AV_LOG_WARNING,
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"Adaptive color transform in an unsupported profile.\n");
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ctx->is_444 = (buf[0x2C] >> 6) & 1;
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if (ctx->is_444) {
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if (bitdepth == 8) {
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avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
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return AVERROR_INVALIDDATA;
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} else if (bitdepth == 10) {
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ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
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ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
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: AV_PIX_FMT_GBRP10;
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} else {
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ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
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ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
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: AV_PIX_FMT_GBRP12;
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}
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} else if (bitdepth == 12) {
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ctx->decode_dct_block = dnxhd_decode_dct_block_12;
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ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
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} else if (bitdepth == 10) {
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if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
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ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
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else
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ctx->decode_dct_block = dnxhd_decode_dct_block_10;
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ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
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} else {
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ctx->decode_dct_block = dnxhd_decode_dct_block_8;
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ctx->pix_fmt = AV_PIX_FMT_YUV422P;
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}
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ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
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if (ctx->bit_depth != old_bit_depth) {
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ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
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ff_idctdsp_init(&ctx->idsp, ctx->avctx);
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ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
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ff_zigzag_direct);
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}
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// make sure profile size constraints are respected
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// DNx100 allows 1920->1440 and 1280->960 subsampling
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if (ctx->width != ctx->cid_table->width &&
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ctx->cid_table->width != DNXHD_VARIABLE) {
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av_reduce(&ctx->avctx->sample_aspect_ratio.num,
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&ctx->avctx->sample_aspect_ratio.den,
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ctx->width, ctx->cid_table->width, 255);
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ctx->width = ctx->cid_table->width;
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}
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if (buf_size < ctx->cid_table->coding_unit_size) {
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av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
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buf_size, ctx->cid_table->coding_unit_size);
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return AVERROR_INVALIDDATA;
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}
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ctx->mb_width = (ctx->width + 15)>> 4;
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ctx->mb_height = AV_RB16(buf + 0x16c);
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if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
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ctx->height <<= 1;
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av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
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ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
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ctx->bit_depth, ctx->mbaff, ctx->act);
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// Newer format supports variable mb_scan_index sizes
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if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
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ctx->data_offset = 0x170 + (ctx->mb_height << 2);
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} else {
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if (ctx->mb_height > 68) {
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av_log(ctx->avctx, AV_LOG_ERROR,
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"mb height too big: %d\n", ctx->mb_height);
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return AVERROR_INVALIDDATA;
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}
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ctx->data_offset = 0x280;
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}
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if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
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av_log(ctx->avctx, AV_LOG_ERROR,
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"mb height too big: %d\n", ctx->mb_height);
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return AVERROR_INVALIDDATA;
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}
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if (buf_size < ctx->data_offset) {
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av_log(ctx->avctx, AV_LOG_ERROR,
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"buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
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return AVERROR_INVALIDDATA;
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}
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if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
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av_log(ctx->avctx, AV_LOG_ERROR,
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"mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
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return AVERROR_INVALIDDATA;
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}
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for (i = 0; i < ctx->mb_height; i++) {
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ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
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ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
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i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
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if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
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av_log(ctx->avctx, AV_LOG_ERROR,
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"invalid mb scan index (%"PRIu32" vs %u).\n",
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ctx->mb_scan_index[i], buf_size - ctx->data_offset);
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return AVERROR_INVALIDDATA;
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}
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}
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return 0;
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}
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static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
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RowContext *row,
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int n,
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int index_bits,
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int level_bias,
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int level_shift,
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int dc_shift)
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{
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int i, j, index1, index2, len, flags;
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int level, component, sign;
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const int *scale;
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const uint8_t *weight_matrix;
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const uint8_t *ac_info = ctx->cid_table->ac_info;
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int16_t *block = row->blocks[n];
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const int eob_index = ctx->cid_table->eob_index;
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int ret = 0;
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OPEN_READER(bs, &row->gb);
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ctx->bdsp.clear_block(block);
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if (!ctx->is_444) {
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if (n & 2) {
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component = 1 + (n & 1);
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scale = row->chroma_scale;
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weight_matrix = ctx->cid_table->chroma_weight;
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} else {
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component = 0;
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scale = row->luma_scale;
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weight_matrix = ctx->cid_table->luma_weight;
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}
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} else {
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component = (n >> 1) % 3;
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if (component) {
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scale = row->chroma_scale;
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weight_matrix = ctx->cid_table->chroma_weight;
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} else {
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scale = row->luma_scale;
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weight_matrix = ctx->cid_table->luma_weight;
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}
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}
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UPDATE_CACHE(bs, &row->gb);
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GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
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if (len) {
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level = GET_CACHE(bs, &row->gb);
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LAST_SKIP_BITS(bs, &row->gb, len);
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sign = ~level >> 31;
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level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
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row->last_dc[component] += level * (1 << dc_shift);
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}
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block[0] = row->last_dc[component];
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i = 0;
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UPDATE_CACHE(bs, &row->gb);
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GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
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DNXHD_VLC_BITS, 2);
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while (index1 != eob_index) {
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level = ac_info[2*index1+0];
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flags = ac_info[2*index1+1];
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sign = SHOW_SBITS(bs, &row->gb, 1);
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SKIP_BITS(bs, &row->gb, 1);
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if (flags & 1) {
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level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
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SKIP_BITS(bs, &row->gb, index_bits);
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}
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if (flags & 2) {
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UPDATE_CACHE(bs, &row->gb);
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GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
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DNXHD_VLC_BITS, 2);
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i += ctx->cid_table->run[index2];
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}
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if (++i > 63) {
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av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
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ret = -1;
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break;
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}
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j = ctx->scantable.permutated[i];
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level *= scale[i];
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level += scale[i] >> 1;
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if (level_bias < 32 || weight_matrix[i] != level_bias)
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level += level_bias; // 1<<(level_shift-1)
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level >>= level_shift;
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block[j] = (level ^ sign) - sign;
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UPDATE_CACHE(bs, &row->gb);
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GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
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DNXHD_VLC_BITS, 2);
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}
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CLOSE_READER(bs, &row->gb);
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return ret;
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}
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static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
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RowContext *row, int n)
|
|
{
|
|
return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
|
|
}
|
|
|
|
static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
|
|
RowContext *row, int n)
|
|
{
|
|
return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
|
|
}
|
|
|
|
static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
|
|
RowContext *row, int n)
|
|
{
|
|
return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
|
|
}
|
|
|
|
static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
|
|
RowContext *row, int n)
|
|
{
|
|
return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
|
|
}
|
|
|
|
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
|
|
RowContext *row, int n)
|
|
{
|
|
return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
|
|
}
|
|
|
|
static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row,
|
|
AVFrame *frame, int x, int y)
|
|
{
|
|
int shift1 = ctx->bit_depth >= 10;
|
|
int dct_linesize_luma = frame->linesize[0];
|
|
int dct_linesize_chroma = frame->linesize[1];
|
|
uint8_t *dest_y, *dest_u, *dest_v;
|
|
int dct_y_offset, dct_x_offset;
|
|
int qscale, i, act;
|
|
int interlaced_mb = 0;
|
|
|
|
if (ctx->mbaff) {
|
|
interlaced_mb = get_bits1(&row->gb);
|
|
qscale = get_bits(&row->gb, 10);
|
|
} else {
|
|
qscale = get_bits(&row->gb, 11);
|
|
}
|
|
act = get_bits1(&row->gb);
|
|
if (act) {
|
|
if (!ctx->act) {
|
|
static int act_warned;
|
|
if (!act_warned) {
|
|
act_warned = 1;
|
|
av_log(ctx->avctx, AV_LOG_ERROR,
|
|
"ACT flag set, in violation of frame header.\n");
|
|
}
|
|
} else if (row->format == -1) {
|
|
row->format = act;
|
|
} else if (row->format != act) {
|
|
row->format = 2; // Variable
|
|
}
|
|
}
|
|
|
|
if (qscale != row->last_qscale) {
|
|
for (i = 0; i < 64; i++) {
|
|
row->luma_scale[i] = qscale * ctx->cid_table->luma_weight[i];
|
|
row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
|
|
}
|
|
row->last_qscale = qscale;
|
|
}
|
|
|
|
for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
|
|
if (ctx->decode_dct_block(ctx, row, i) < 0)
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (frame->interlaced_frame) {
|
|
dct_linesize_luma <<= 1;
|
|
dct_linesize_chroma <<= 1;
|
|
}
|
|
|
|
dest_y = frame->data[0] + ((y * dct_linesize_luma) << 4) + (x << (4 + shift1));
|
|
dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
|
|
dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
|
|
|
|
if (frame->interlaced_frame && ctx->cur_field) {
|
|
dest_y += frame->linesize[0];
|
|
dest_u += frame->linesize[1];
|
|
dest_v += frame->linesize[2];
|
|
}
|
|
if (interlaced_mb) {
|
|
dct_linesize_luma <<= 1;
|
|
dct_linesize_chroma <<= 1;
|
|
}
|
|
|
|
dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
|
|
dct_x_offset = 8 << shift1;
|
|
if (!ctx->is_444) {
|
|
ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
|
|
ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
|
|
ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[4]);
|
|
ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
|
|
|
|
if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
|
|
dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
|
|
ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
|
|
ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[3]);
|
|
ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
|
|
ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
|
|
}
|
|
} else {
|
|
ctx->idsp.idct_put(dest_y, dct_linesize_luma, row->blocks[0]);
|
|
ctx->idsp.idct_put(dest_y + dct_x_offset, dct_linesize_luma, row->blocks[1]);
|
|
ctx->idsp.idct_put(dest_y + dct_y_offset, dct_linesize_luma, row->blocks[6]);
|
|
ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
|
|
|
|
if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
|
|
dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
|
|
ctx->idsp.idct_put(dest_u, dct_linesize_chroma, row->blocks[2]);
|
|
ctx->idsp.idct_put(dest_u + dct_x_offset, dct_linesize_chroma, row->blocks[3]);
|
|
ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[8]);
|
|
ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
|
|
ctx->idsp.idct_put(dest_v, dct_linesize_chroma, row->blocks[4]);
|
|
ctx->idsp.idct_put(dest_v + dct_x_offset, dct_linesize_chroma, row->blocks[5]);
|
|
ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[10]);
|
|
ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dnxhd_decode_row(AVCodecContext *avctx, void *data,
|
|
int rownb, int threadnb)
|
|
{
|
|
const DNXHDContext *ctx = avctx->priv_data;
|
|
uint32_t offset = ctx->mb_scan_index[rownb];
|
|
RowContext *row = ctx->rows + threadnb;
|
|
int x;
|
|
|
|
row->last_dc[0] =
|
|
row->last_dc[1] =
|
|
row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
|
|
init_get_bits(&row->gb, ctx->buf + offset, (ctx->buf_size - offset) << 3);
|
|
for (x = 0; x < ctx->mb_width; x++) {
|
|
//START_TIMER;
|
|
int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
|
|
if (ret < 0) {
|
|
row->errors++;
|
|
return ret;
|
|
}
|
|
//STOP_TIMER("decode macroblock");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data,
|
|
int *got_frame, AVPacket *avpkt)
|
|
{
|
|
const uint8_t *buf = avpkt->data;
|
|
int buf_size = avpkt->size;
|
|
DNXHDContext *ctx = avctx->priv_data;
|
|
ThreadFrame frame = { .f = data };
|
|
AVFrame *picture = data;
|
|
int first_field = 1;
|
|
int ret, i;
|
|
|
|
ff_dlog(avctx, "frame size %d\n", buf_size);
|
|
|
|
for (i = 0; i < avctx->thread_count; i++)
|
|
ctx->rows[i].format = -1;
|
|
|
|
decode_coding_unit:
|
|
if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
|
|
return ret;
|
|
|
|
if ((avctx->width || avctx->height) &&
|
|
(ctx->width != avctx->width || ctx->height != avctx->height)) {
|
|
av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
|
|
avctx->width, avctx->height, ctx->width, ctx->height);
|
|
first_field = 1;
|
|
}
|
|
if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
|
|
av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
|
|
av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt));
|
|
first_field = 1;
|
|
}
|
|
|
|
avctx->pix_fmt = ctx->pix_fmt;
|
|
ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (first_field) {
|
|
if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
|
|
return ret;
|
|
picture->pict_type = AV_PICTURE_TYPE_I;
|
|
picture->key_frame = 1;
|
|
}
|
|
|
|
ctx->buf_size = buf_size - ctx->data_offset;
|
|
ctx->buf = buf + ctx->data_offset;
|
|
avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
|
|
|
|
if (first_field && picture->interlaced_frame) {
|
|
buf += ctx->cid_table->coding_unit_size;
|
|
buf_size -= ctx->cid_table->coding_unit_size;
|
|
first_field = 0;
|
|
goto decode_coding_unit;
|
|
}
|
|
|
|
ret = 0;
|
|
for (i = 0; i < avctx->thread_count; i++) {
|
|
ret += ctx->rows[i].errors;
|
|
ctx->rows[i].errors = 0;
|
|
}
|
|
|
|
if (ctx->act) {
|
|
static int act_warned;
|
|
int format = ctx->rows[0].format;
|
|
for (i = 1; i < avctx->thread_count; i++) {
|
|
if (ctx->rows[i].format != format &&
|
|
ctx->rows[i].format != -1 /* not run */) {
|
|
format = 2;
|
|
break;
|
|
}
|
|
}
|
|
switch (format) {
|
|
case -1:
|
|
case 2:
|
|
if (!act_warned) {
|
|
act_warned = 1;
|
|
av_log(ctx->avctx, AV_LOG_ERROR,
|
|
"Unsupported: variable ACT flag.\n");
|
|
}
|
|
break;
|
|
case 0:
|
|
ctx->pix_fmt = ctx->bit_depth==10
|
|
? AV_PIX_FMT_GBRP10 : AV_PIX_FMT_GBRP12;
|
|
break;
|
|
case 1:
|
|
ctx->pix_fmt = ctx->bit_depth==10
|
|
? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV444P12;
|
|
break;
|
|
}
|
|
}
|
|
avctx->pix_fmt = ctx->pix_fmt;
|
|
if (ret) {
|
|
av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
*got_frame = 1;
|
|
return avpkt->size;
|
|
}
|
|
|
|
static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
|
|
{
|
|
DNXHDContext *ctx = avctx->priv_data;
|
|
|
|
ff_free_vlc(&ctx->ac_vlc);
|
|
ff_free_vlc(&ctx->dc_vlc);
|
|
ff_free_vlc(&ctx->run_vlc);
|
|
|
|
av_freep(&ctx->rows);
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_dnxhd_decoder = {
|
|
.name = "dnxhd",
|
|
.long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_DNXHD,
|
|
.priv_data_size = sizeof(DNXHDContext),
|
|
.init = dnxhd_decode_init,
|
|
.close = dnxhd_decode_close,
|
|
.decode = dnxhd_decode_frame,
|
|
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
|
|
AV_CODEC_CAP_SLICE_THREADS,
|
|
.init_thread_copy = ONLY_IF_THREADS_ENABLED(dnxhd_decode_init_thread_copy),
|
|
.profiles = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),
|
|
};
|