| /* |
| * VC3/DNxHD decoder. |
| * Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com> |
| * Copyright (c) 2011 MirriAd Ltd |
| * Copyright (c) 2015 Christophe Gisquet |
| * |
| * 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com> |
| * Slice multithreading and MB interlaced support added by Christophe Gisquet |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "libavutil/imgutils.h" |
| #include "libavutil/mem_internal.h" |
| |
| #include "avcodec.h" |
| #include "blockdsp.h" |
| #include "get_bits.h" |
| #include "dnxhddata.h" |
| #include "idctdsp.h" |
| #include "internal.h" |
| #include "profiles.h" |
| #include "thread.h" |
| |
| typedef struct RowContext { |
| DECLARE_ALIGNED(32, int16_t, blocks)[12][64]; |
| int luma_scale[64]; |
| int chroma_scale[64]; |
| GetBitContext gb; |
| int last_dc[3]; |
| int last_qscale; |
| int errors; |
| /** -1:not set yet 0:off=RGB 1:on=YUV 2:variable */ |
| int format; |
| } RowContext; |
| |
| typedef struct DNXHDContext { |
| AVCodecContext *avctx; |
| RowContext *rows; |
| BlockDSPContext bdsp; |
| const uint8_t* buf; |
| int buf_size; |
| int64_t cid; ///< compression id |
| unsigned int width, height; |
| enum AVPixelFormat pix_fmt; |
| unsigned int mb_width, mb_height; |
| uint32_t mb_scan_index[512]; |
| int data_offset; // End of mb_scan_index, where macroblocks start |
| int cur_field; ///< current interlaced field |
| VLC ac_vlc, dc_vlc, run_vlc; |
| IDCTDSPContext idsp; |
| ScanTable scantable; |
| const CIDEntry *cid_table; |
| int bit_depth; // 8, 10, 12 or 0 if not initialized at all. |
| int is_444; |
| int alpha; |
| int lla; |
| int mbaff; |
| int act; |
| int (*decode_dct_block)(const struct DNXHDContext *ctx, |
| RowContext *row, int n); |
| } DNXHDContext; |
| |
| #define DNXHD_VLC_BITS 9 |
| #define DNXHD_DC_VLC_BITS 7 |
| |
| static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx, |
| RowContext *row, int n); |
| static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx, |
| RowContext *row, int n); |
| static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx, |
| RowContext *row, int n); |
| static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx, |
| RowContext *row, int n); |
| static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx, |
| RowContext *row, int n); |
| |
| static av_cold int dnxhd_decode_init(AVCodecContext *avctx) |
| { |
| DNXHDContext *ctx = avctx->priv_data; |
| |
| ctx->avctx = avctx; |
| ctx->cid = -1; |
| if (avctx->colorspace == AVCOL_SPC_UNSPECIFIED) { |
| avctx->colorspace = AVCOL_SPC_BT709; |
| } |
| |
| avctx->coded_width = FFALIGN(avctx->width, 16); |
| avctx->coded_height = FFALIGN(avctx->height, 16); |
| |
| ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext)); |
| if (!ctx->rows) |
| return AVERROR(ENOMEM); |
| |
| return 0; |
| } |
| |
| static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth) |
| { |
| if (cid != ctx->cid) { |
| const CIDEntry *cid_table = ff_dnxhd_get_cid_table(cid); |
| |
| if (!cid_table) { |
| av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid); |
| return AVERROR(ENOSYS); |
| } |
| if (cid_table->bit_depth != bitdepth && |
| cid_table->bit_depth != DNXHD_VARIABLE) { |
| av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", |
| cid_table->bit_depth, bitdepth); |
| return AVERROR_INVALIDDATA; |
| } |
| ctx->cid_table = cid_table; |
| av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid); |
| |
| ff_free_vlc(&ctx->ac_vlc); |
| ff_free_vlc(&ctx->dc_vlc); |
| ff_free_vlc(&ctx->run_vlc); |
| |
| init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257, |
| ctx->cid_table->ac_bits, 1, 1, |
| ctx->cid_table->ac_codes, 2, 2, 0); |
| init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12, |
| ctx->cid_table->dc_bits, 1, 1, |
| ctx->cid_table->dc_codes, 1, 1, 0); |
| init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62, |
| ctx->cid_table->run_bits, 1, 1, |
| ctx->cid_table->run_codes, 2, 2, 0); |
| |
| ctx->cid = cid; |
| } |
| return 0; |
| } |
| |
| static int dnxhd_get_profile(int cid) |
| { |
| switch(cid) { |
| case 1270: |
| return FF_PROFILE_DNXHR_444; |
| case 1271: |
| return FF_PROFILE_DNXHR_HQX; |
| case 1272: |
| return FF_PROFILE_DNXHR_HQ; |
| case 1273: |
| return FF_PROFILE_DNXHR_SQ; |
| case 1274: |
| return FF_PROFILE_DNXHR_LB; |
| } |
| return FF_PROFILE_DNXHD; |
| } |
| |
| static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame, |
| const uint8_t *buf, int buf_size, |
| int first_field) |
| { |
| int i, cid, ret; |
| int old_bit_depth = ctx->bit_depth, bitdepth; |
| uint64_t header_prefix; |
| if (buf_size < 0x280) { |
| av_log(ctx->avctx, AV_LOG_ERROR, |
| "buffer too small (%d < 640).\n", buf_size); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| header_prefix = ff_dnxhd_parse_header_prefix(buf); |
| if (header_prefix == 0) { |
| av_log(ctx->avctx, AV_LOG_ERROR, |
| "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n", |
| buf[0], buf[1], buf[2], buf[3], buf[4]); |
| return AVERROR_INVALIDDATA; |
| } |
| if (buf[5] & 2) { /* interlaced */ |
| ctx->cur_field = buf[5] & 1; |
| frame->interlaced_frame = 1; |
| frame->top_field_first = first_field ^ ctx->cur_field; |
| av_log(ctx->avctx, AV_LOG_DEBUG, |
| "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field); |
| } else { |
| ctx->cur_field = 0; |
| } |
| ctx->mbaff = (buf[0x6] >> 5) & 1; |
| ctx->alpha = buf[0x7] & 1; |
| ctx->lla = (buf[0x7] >> 1) & 1; |
| if (ctx->alpha) |
| avpriv_request_sample(ctx->avctx, "alpha"); |
| |
| ctx->height = AV_RB16(buf + 0x18); |
| ctx->width = AV_RB16(buf + 0x1a); |
| |
| switch(buf[0x21] >> 5) { |
| case 1: bitdepth = 8; break; |
| case 2: bitdepth = 10; break; |
| case 3: bitdepth = 12; break; |
| default: |
| av_log(ctx->avctx, AV_LOG_ERROR, |
| "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| cid = AV_RB32(buf + 0x28); |
| |
| ctx->avctx->profile = dnxhd_get_profile(cid); |
| |
| if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0) |
| return ret; |
| if (ctx->mbaff && ctx->cid_table->cid != 1260) |
| av_log(ctx->avctx, AV_LOG_WARNING, |
| "Adaptive MB interlace flag in an unsupported profile.\n"); |
| |
| switch ((buf[0x2C] >> 1) & 3) { |
| case 0: frame->colorspace = AVCOL_SPC_BT709; break; |
| case 1: frame->colorspace = AVCOL_SPC_BT2020_NCL; break; |
| case 2: frame->colorspace = AVCOL_SPC_BT2020_CL; break; |
| case 3: frame->colorspace = AVCOL_SPC_UNSPECIFIED; break; |
| } |
| |
| ctx->act = buf[0x2C] & 1; |
| if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270) |
| av_log(ctx->avctx, AV_LOG_WARNING, |
| "Adaptive color transform in an unsupported profile.\n"); |
| |
| ctx->is_444 = (buf[0x2C] >> 6) & 1; |
| if (ctx->is_444) { |
| if (bitdepth == 8) { |
| avpriv_request_sample(ctx->avctx, "4:4:4 8 bits"); |
| return AVERROR_INVALIDDATA; |
| } else if (bitdepth == 10) { |
| ctx->decode_dct_block = dnxhd_decode_dct_block_10_444; |
| ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10 |
| : AV_PIX_FMT_GBRP10; |
| } else { |
| ctx->decode_dct_block = dnxhd_decode_dct_block_12_444; |
| ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12 |
| : AV_PIX_FMT_GBRP12; |
| } |
| } else if (bitdepth == 12) { |
| ctx->decode_dct_block = dnxhd_decode_dct_block_12; |
| ctx->pix_fmt = AV_PIX_FMT_YUV422P12; |
| } else if (bitdepth == 10) { |
| if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX) |
| ctx->decode_dct_block = dnxhd_decode_dct_block_10_444; |
| else |
| ctx->decode_dct_block = dnxhd_decode_dct_block_10; |
| ctx->pix_fmt = AV_PIX_FMT_YUV422P10; |
| } else { |
| ctx->decode_dct_block = dnxhd_decode_dct_block_8; |
| ctx->pix_fmt = AV_PIX_FMT_YUV422P; |
| } |
| |
| ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth; |
| if (ctx->bit_depth != old_bit_depth) { |
| ff_blockdsp_init(&ctx->bdsp, ctx->avctx); |
| ff_idctdsp_init(&ctx->idsp, ctx->avctx); |
| ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable, |
| ff_zigzag_direct); |
| } |
| |
| // make sure profile size constraints are respected |
| // DNx100 allows 1920->1440 and 1280->960 subsampling |
| if (ctx->width != ctx->cid_table->width && |
| ctx->cid_table->width != DNXHD_VARIABLE) { |
| av_reduce(&ctx->avctx->sample_aspect_ratio.num, |
| &ctx->avctx->sample_aspect_ratio.den, |
| ctx->width, ctx->cid_table->width, 255); |
| ctx->width = ctx->cid_table->width; |
| } |
| |
| if (buf_size < ctx->cid_table->coding_unit_size) { |
| av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n", |
| buf_size, ctx->cid_table->coding_unit_size); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| ctx->mb_width = (ctx->width + 15)>> 4; |
| ctx->mb_height = AV_RB16(buf + 0x16c); |
| |
| if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame) |
| ctx->height <<= 1; |
| |
| av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n", |
| ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2", |
| ctx->bit_depth, ctx->mbaff, ctx->act); |
| |
| // Newer format supports variable mb_scan_index sizes |
| if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) { |
| ctx->data_offset = 0x170 + (ctx->mb_height << 2); |
| } else { |
| if (ctx->mb_height > 68) { |
| av_log(ctx->avctx, AV_LOG_ERROR, |
| "mb height too big: %d\n", ctx->mb_height); |
| return AVERROR_INVALIDDATA; |
| } |
| ctx->data_offset = 0x280; |
| } |
| if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) { |
| av_log(ctx->avctx, AV_LOG_ERROR, |
| "mb height too big: %d\n", ctx->mb_height); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| if (buf_size < ctx->data_offset) { |
| av_log(ctx->avctx, AV_LOG_ERROR, |
| "buffer too small (%d < %d).\n", buf_size, ctx->data_offset); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) { |
| av_log(ctx->avctx, AV_LOG_ERROR, |
| "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index)); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| for (i = 0; i < ctx->mb_height; i++) { |
| ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2)); |
| ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n", |
| i, 0x170 + (i << 2), ctx->mb_scan_index[i]); |
| if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) { |
| av_log(ctx->avctx, AV_LOG_ERROR, |
| "invalid mb scan index (%"PRIu32" vs %u).\n", |
| ctx->mb_scan_index[i], buf_size - ctx->data_offset); |
| return AVERROR_INVALIDDATA; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx, |
| RowContext *row, |
| int n, |
| int index_bits, |
| int level_bias, |
| int level_shift, |
| int dc_shift) |
| { |
| int i, j, index1, index2, len, flags; |
| int level, component, sign; |
| const int *scale; |
| const uint8_t *weight_matrix; |
| const uint8_t *ac_info = ctx->cid_table->ac_info; |
| int16_t *block = row->blocks[n]; |
| const int eob_index = ctx->cid_table->eob_index; |
| int ret = 0; |
| OPEN_READER(bs, &row->gb); |
| |
| ctx->bdsp.clear_block(block); |
| |
| if (!ctx->is_444) { |
| if (n & 2) { |
| component = 1 + (n & 1); |
| scale = row->chroma_scale; |
| weight_matrix = ctx->cid_table->chroma_weight; |
| } else { |
| component = 0; |
| scale = row->luma_scale; |
| weight_matrix = ctx->cid_table->luma_weight; |
| } |
| } else { |
| component = (n >> 1) % 3; |
| if (component) { |
| scale = row->chroma_scale; |
| weight_matrix = ctx->cid_table->chroma_weight; |
| } else { |
| scale = row->luma_scale; |
| weight_matrix = ctx->cid_table->luma_weight; |
| } |
| } |
| |
| UPDATE_CACHE(bs, &row->gb); |
| GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1); |
| if (len < 0) { |
| ret = len; |
| goto error; |
| } |
| if (len) { |
| level = GET_CACHE(bs, &row->gb); |
| LAST_SKIP_BITS(bs, &row->gb, len); |
| sign = ~level >> 31; |
| level = (NEG_USR32(sign ^ level, len) ^ sign) - sign; |
| row->last_dc[component] += level * (1 << dc_shift); |
| } |
| block[0] = row->last_dc[component]; |
| |
| i = 0; |
| |
| UPDATE_CACHE(bs, &row->gb); |
| GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table, |
| DNXHD_VLC_BITS, 2); |
| |
| while (index1 != eob_index) { |
| level = ac_info[2*index1+0]; |
| flags = ac_info[2*index1+1]; |
| |
| sign = SHOW_SBITS(bs, &row->gb, 1); |
| SKIP_BITS(bs, &row->gb, 1); |
| |
| if (flags & 1) { |
| level += SHOW_UBITS(bs, &row->gb, index_bits) << 7; |
| SKIP_BITS(bs, &row->gb, index_bits); |
| } |
| |
| if (flags & 2) { |
| UPDATE_CACHE(bs, &row->gb); |
| GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table, |
| DNXHD_VLC_BITS, 2); |
| i += ctx->cid_table->run[index2]; |
| } |
| |
| if (++i > 63) { |
| av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i); |
| ret = -1; |
| break; |
| } |
| |
| j = ctx->scantable.permutated[i]; |
| level *= scale[i]; |
| level += scale[i] >> 1; |
| if (level_bias < 32 || weight_matrix[i] != level_bias) |
| level += level_bias; // 1<<(level_shift-1) |
| level >>= level_shift; |
| |
| block[j] = (level ^ sign) - sign; |
| |
| UPDATE_CACHE(bs, &row->gb); |
| GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table, |
| DNXHD_VLC_BITS, 2); |
| } |
| error: |
| CLOSE_READER(bs, &row->gb); |
| return ret; |
| } |
| |
| static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx, |
| 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, ret; |
| |
| row->last_dc[0] = |
| row->last_dc[1] = |
| row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1) |
| ret = init_get_bits8(&row->gb, ctx->buf + offset, ctx->buf_size - offset); |
| if (ret < 0) { |
| row->errors++; |
| return ret; |
| } |
| for (x = 0; x < ctx->mb_width; x++) { |
| int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb); |
| if (ret < 0) { |
| row->errors++; |
| return ret; |
| } |
| } |
| |
| 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, |
| .profiles = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles), |
| }; |