963 lines
37 KiB
C
963 lines
37 KiB
C
/*
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* Copyright (c) 2015-2016 Kieran Kunhya <kieran@kunhya.com>
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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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/**
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* @file
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* Cineform HD video decoder
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*/
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#include "libavutil/attributes.h"
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#include "libavutil/buffer.h"
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#include "libavutil/common.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/opt.h"
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#include "avcodec.h"
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#include "bytestream.h"
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#include "get_bits.h"
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#include "internal.h"
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#include "thread.h"
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#include "cfhd.h"
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#define ALPHA_COMPAND_DC_OFFSET 256
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#define ALPHA_COMPAND_GAIN 9400
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enum CFHDParam {
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ChannelCount = 12,
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SubbandCount = 14,
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ImageWidth = 20,
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ImageHeight = 21,
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LowpassPrecision = 35,
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SubbandNumber = 48,
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Quantization = 53,
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ChannelNumber = 62,
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SampleFlags = 68,
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BitsPerComponent = 101,
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ChannelWidth = 104,
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ChannelHeight = 105,
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PrescaleShift = 109,
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};
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static av_cold int cfhd_init(AVCodecContext *avctx)
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{
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CFHDContext *s = avctx->priv_data;
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avctx->bits_per_raw_sample = 10;
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s->avctx = avctx;
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return ff_cfhd_init_vlcs(s);
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}
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static void init_plane_defaults(CFHDContext *s)
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{
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s->subband_num = 0;
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s->level = 0;
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s->subband_num_actual = 0;
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}
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static void init_peak_table_defaults(CFHDContext *s)
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{
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s->peak.level = 0;
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s->peak.offset = 0;
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memset(&s->peak.base, 0, sizeof(s->peak.base));
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}
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static void init_frame_defaults(CFHDContext *s)
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{
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s->coded_width = 0;
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s->coded_height = 0;
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s->cropped_height = 0;
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s->bpc = 10;
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s->channel_cnt = 4;
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s->subband_cnt = SUBBAND_COUNT;
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s->channel_num = 0;
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s->lowpass_precision = 16;
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s->quantisation = 1;
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s->wavelet_depth = 3;
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s->pshift = 1;
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s->codebook = 0;
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s->difference_coding = 0;
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s->progressive = 0;
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init_plane_defaults(s);
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init_peak_table_defaults(s);
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}
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/* TODO: merge with VLC tables or use LUT */
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static inline int dequant_and_decompand(int level, int quantisation, int codebook)
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{
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if (codebook == 0 || codebook == 1) {
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int64_t abslevel = abs(level);
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if (level < 264)
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return (abslevel + ((768 * abslevel * abslevel * abslevel) / (255 * 255 * 255))) *
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FFSIGN(level) * quantisation;
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else
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return level * quantisation;
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} else
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return level * quantisation;
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}
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static inline void difference_coding(int16_t *band, int width, int height)
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{
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int i,j;
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for (i = 0; i < height; i++) {
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for (j = 1; j < width; j++) {
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band[j] += band[j-1];
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}
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band += width;
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}
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}
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static inline void peak_table(int16_t *band, Peak *peak, int length)
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{
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int i;
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for (i = 0; i < length; i++)
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if (abs(band[i]) > peak->level)
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band[i] = bytestream2_get_le16(&peak->base);
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}
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static inline void process_alpha(int16_t *alpha, int width)
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{
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int i, channel;
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for (i = 0; i < width; i++) {
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channel = alpha[i];
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channel -= ALPHA_COMPAND_DC_OFFSET;
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channel <<= 3;
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channel *= ALPHA_COMPAND_GAIN;
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channel >>= 16;
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channel = av_clip_uintp2(channel, 12);
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alpha[i] = channel;
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}
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}
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static inline void filter(int16_t *output, ptrdiff_t out_stride,
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int16_t *low, ptrdiff_t low_stride,
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int16_t *high, ptrdiff_t high_stride,
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int len, int clip)
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{
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int16_t tmp;
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int i;
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for (i = 0; i < len; i++) {
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if (i == 0) {
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tmp = (11*low[0*low_stride] - 4*low[1*low_stride] + low[2*low_stride] + 4) >> 3;
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output[(2*i+0)*out_stride] = (tmp + high[0*high_stride]) >> 1;
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if (clip)
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output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
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tmp = ( 5*low[0*low_stride] + 4*low[1*low_stride] - low[2*low_stride] + 4) >> 3;
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output[(2*i+1)*out_stride] = (tmp - high[0*high_stride]) >> 1;
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if (clip)
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output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
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} else if (i == len-1) {
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tmp = ( 5*low[i*low_stride] + 4*low[(i-1)*low_stride] - low[(i-2)*low_stride] + 4) >> 3;
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output[(2*i+0)*out_stride] = (tmp + high[i*high_stride]) >> 1;
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if (clip)
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output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
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tmp = (11*low[i*low_stride] - 4*low[(i-1)*low_stride] + low[(i-2)*low_stride] + 4) >> 3;
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output[(2*i+1)*out_stride] = (tmp - high[i*high_stride]) >> 1;
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if (clip)
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output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
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} else {
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tmp = (low[(i-1)*low_stride] - low[(i+1)*low_stride] + 4) >> 3;
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output[(2*i+0)*out_stride] = (tmp + low[i*low_stride] + high[i*high_stride]) >> 1;
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if (clip)
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output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
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tmp = (low[(i+1)*low_stride] - low[(i-1)*low_stride] + 4) >> 3;
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output[(2*i+1)*out_stride] = (tmp + low[i*low_stride] - high[i*high_stride]) >> 1;
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if (clip)
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output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
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}
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}
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}
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static inline void interlaced_vertical_filter(int16_t *output, int16_t *low, int16_t *high,
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int width, int linesize, int plane)
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{
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int i;
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int16_t even, odd;
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for (i = 0; i < width; i++) {
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even = (low[i] - high[i])/2;
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odd = (low[i] + high[i])/2;
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output[i] = av_clip_uintp2(even, 10);
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output[i + linesize] = av_clip_uintp2(odd, 10);
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}
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}
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static void horiz_filter(int16_t *output, int16_t *low, int16_t *high,
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int width)
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{
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filter(output, 1, low, 1, high, 1, width, 0);
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}
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static void horiz_filter_clip(int16_t *output, int16_t *low, int16_t *high,
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int width, int clip)
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{
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filter(output, 1, low, 1, high, 1, width, clip);
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}
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static void vert_filter(int16_t *output, ptrdiff_t out_stride,
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int16_t *low, ptrdiff_t low_stride,
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int16_t *high, ptrdiff_t high_stride, int len)
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{
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filter(output, out_stride, low, low_stride, high, high_stride, len, 0);
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}
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static void free_buffers(CFHDContext *s)
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{
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int i, j;
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for (i = 0; i < FF_ARRAY_ELEMS(s->plane); i++) {
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av_freep(&s->plane[i].idwt_buf);
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av_freep(&s->plane[i].idwt_tmp);
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for (j = 0; j < 9; j++)
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s->plane[i].subband[j] = NULL;
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for (j = 0; j < 8; j++)
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s->plane[i].l_h[j] = NULL;
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}
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s->a_height = 0;
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s->a_width = 0;
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}
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static int alloc_buffers(AVCodecContext *avctx)
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{
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CFHDContext *s = avctx->priv_data;
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int i, j, ret, planes;
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int chroma_x_shift, chroma_y_shift;
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unsigned k;
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if ((ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height)) < 0)
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return ret;
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avctx->pix_fmt = s->coded_format;
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if ((ret = av_pix_fmt_get_chroma_sub_sample(s->coded_format,
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&chroma_x_shift,
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&chroma_y_shift)) < 0)
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return ret;
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planes = av_pix_fmt_count_planes(s->coded_format);
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for (i = 0; i < planes; i++) {
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int w8, h8, w4, h4, w2, h2;
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int width = i ? avctx->width >> chroma_x_shift : avctx->width;
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int height = i ? avctx->height >> chroma_y_shift : avctx->height;
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ptrdiff_t stride = FFALIGN(width / 8, 8) * 8;
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if (chroma_y_shift)
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height = FFALIGN(height / 8, 2) * 8;
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s->plane[i].width = width;
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s->plane[i].height = height;
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s->plane[i].stride = stride;
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w8 = FFALIGN(s->plane[i].width / 8, 8);
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h8 = height / 8;
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w4 = w8 * 2;
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h4 = h8 * 2;
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w2 = w4 * 2;
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h2 = h4 * 2;
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s->plane[i].idwt_buf =
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av_mallocz_array(height * stride, sizeof(*s->plane[i].idwt_buf));
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s->plane[i].idwt_tmp =
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av_malloc_array(height * stride, sizeof(*s->plane[i].idwt_tmp));
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if (!s->plane[i].idwt_buf || !s->plane[i].idwt_tmp)
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return AVERROR(ENOMEM);
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s->plane[i].subband[0] = s->plane[i].idwt_buf;
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s->plane[i].subband[1] = s->plane[i].idwt_buf + 2 * w8 * h8;
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s->plane[i].subband[2] = s->plane[i].idwt_buf + 1 * w8 * h8;
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s->plane[i].subband[3] = s->plane[i].idwt_buf + 3 * w8 * h8;
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s->plane[i].subband[4] = s->plane[i].idwt_buf + 2 * w4 * h4;
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s->plane[i].subband[5] = s->plane[i].idwt_buf + 1 * w4 * h4;
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s->plane[i].subband[6] = s->plane[i].idwt_buf + 3 * w4 * h4;
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s->plane[i].subband[7] = s->plane[i].idwt_buf + 2 * w2 * h2;
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s->plane[i].subband[8] = s->plane[i].idwt_buf + 1 * w2 * h2;
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s->plane[i].subband[9] = s->plane[i].idwt_buf + 3 * w2 * h2;
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for (j = 0; j < DWT_LEVELS; j++) {
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for (k = 0; k < FF_ARRAY_ELEMS(s->plane[i].band[j]); k++) {
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s->plane[i].band[j][k].a_width = w8 << j;
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s->plane[i].band[j][k].a_height = h8 << j;
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}
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}
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/* ll2 and ll1 commented out because they are done in-place */
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s->plane[i].l_h[0] = s->plane[i].idwt_tmp;
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s->plane[i].l_h[1] = s->plane[i].idwt_tmp + 2 * w8 * h8;
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// s->plane[i].l_h[2] = ll2;
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s->plane[i].l_h[3] = s->plane[i].idwt_tmp;
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s->plane[i].l_h[4] = s->plane[i].idwt_tmp + 2 * w4 * h4;
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// s->plane[i].l_h[5] = ll1;
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s->plane[i].l_h[6] = s->plane[i].idwt_tmp;
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s->plane[i].l_h[7] = s->plane[i].idwt_tmp + 2 * w2 * h2;
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}
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s->a_height = s->coded_height;
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s->a_width = s->coded_width;
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s->a_format = s->coded_format;
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return 0;
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}
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static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame,
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AVPacket *avpkt)
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{
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CFHDContext *s = avctx->priv_data;
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GetByteContext gb;
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ThreadFrame frame = { .f = data };
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AVFrame *pic = data;
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int ret = 0, i, j, planes, plane, got_buffer = 0;
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int16_t *coeff_data;
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s->coded_format = AV_PIX_FMT_YUV422P10;
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init_frame_defaults(s);
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planes = av_pix_fmt_count_planes(s->coded_format);
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bytestream2_init(&gb, avpkt->data, avpkt->size);
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while (bytestream2_get_bytes_left(&gb) > 4) {
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/* Bit weird but implement the tag parsing as the spec says */
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uint16_t tagu = bytestream2_get_be16(&gb);
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int16_t tag = (int16_t)tagu;
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int8_t tag8 = (int8_t)(tagu >> 8);
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uint16_t abstag = abs(tag);
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int8_t abs_tag8 = abs(tag8);
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uint16_t data = bytestream2_get_be16(&gb);
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if (abs_tag8 >= 0x60 && abs_tag8 <= 0x6f) {
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av_log(avctx, AV_LOG_DEBUG, "large len %x\n", ((tagu & 0xff) << 16) | data);
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} else if (tag == SampleFlags) {
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av_log(avctx, AV_LOG_DEBUG, "Progressive?%"PRIu16"\n", data);
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s->progressive = data & 0x0001;
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} else if (tag == ImageWidth) {
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av_log(avctx, AV_LOG_DEBUG, "Width %"PRIu16"\n", data);
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s->coded_width = data;
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} else if (tag == ImageHeight) {
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av_log(avctx, AV_LOG_DEBUG, "Height %"PRIu16"\n", data);
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s->coded_height = data;
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} else if (tag == 101) {
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av_log(avctx, AV_LOG_DEBUG, "Bits per component: %"PRIu16"\n", data);
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if (data < 1 || data > 31) {
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av_log(avctx, AV_LOG_ERROR, "Bits per component %d is invalid\n", data);
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ret = AVERROR(EINVAL);
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break;
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}
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s->bpc = data;
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} else if (tag == ChannelCount) {
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av_log(avctx, AV_LOG_DEBUG, "Channel Count: %"PRIu16"\n", data);
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s->channel_cnt = data;
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if (data > 4) {
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av_log(avctx, AV_LOG_ERROR, "Channel Count of %"PRIu16" is unsupported\n", data);
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ret = AVERROR_PATCHWELCOME;
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break;
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}
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} else if (tag == SubbandCount) {
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av_log(avctx, AV_LOG_DEBUG, "Subband Count: %"PRIu16"\n", data);
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if (data != SUBBAND_COUNT) {
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av_log(avctx, AV_LOG_ERROR, "Subband Count of %"PRIu16" is unsupported\n", data);
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ret = AVERROR_PATCHWELCOME;
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break;
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}
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} else if (tag == ChannelNumber) {
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s->channel_num = data;
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av_log(avctx, AV_LOG_DEBUG, "Channel number %"PRIu16"\n", data);
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if (s->channel_num >= planes) {
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av_log(avctx, AV_LOG_ERROR, "Invalid channel number\n");
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ret = AVERROR(EINVAL);
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break;
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}
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init_plane_defaults(s);
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} else if (tag == SubbandNumber) {
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if (s->subband_num != 0 && data == 1) // hack
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s->level++;
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av_log(avctx, AV_LOG_DEBUG, "Subband number %"PRIu16"\n", data);
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s->subband_num = data;
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if (s->level >= DWT_LEVELS) {
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av_log(avctx, AV_LOG_ERROR, "Invalid level\n");
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ret = AVERROR(EINVAL);
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break;
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}
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if (s->subband_num > 3) {
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av_log(avctx, AV_LOG_ERROR, "Invalid subband number\n");
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ret = AVERROR(EINVAL);
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break;
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}
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} else if (tag == 51) {
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av_log(avctx, AV_LOG_DEBUG, "Subband number actual %"PRIu16"\n", data);
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s->subband_num_actual = data;
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if (s->subband_num_actual >= 10) {
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av_log(avctx, AV_LOG_ERROR, "Invalid subband number actual\n");
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ret = AVERROR(EINVAL);
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break;
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}
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} else if (tag == LowpassPrecision)
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av_log(avctx, AV_LOG_DEBUG, "Lowpass precision bits: %"PRIu16"\n", data);
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else if (tag == Quantization) {
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s->quantisation = data;
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av_log(avctx, AV_LOG_DEBUG, "Quantisation: %"PRIu16"\n", data);
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} else if (tag == PrescaleShift) {
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s->prescale_shift[0] = (data >> 0) & 0x7;
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s->prescale_shift[1] = (data >> 3) & 0x7;
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s->prescale_shift[2] = (data >> 6) & 0x7;
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av_log(avctx, AV_LOG_DEBUG, "Prescale shift (VC-5): %x\n", data);
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} else if (tag == 27) {
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av_log(avctx, AV_LOG_DEBUG, "Lowpass width %"PRIu16"\n", data);
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if (data < 3 || data > s->plane[s->channel_num].band[0][0].a_width) {
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av_log(avctx, AV_LOG_ERROR, "Invalid lowpass width\n");
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ret = AVERROR(EINVAL);
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break;
|
|
}
|
|
s->plane[s->channel_num].band[0][0].width = data;
|
|
s->plane[s->channel_num].band[0][0].stride = data;
|
|
} else if (tag == 28) {
|
|
av_log(avctx, AV_LOG_DEBUG, "Lowpass height %"PRIu16"\n", data);
|
|
if (data < 3 || data > s->plane[s->channel_num].band[0][0].a_height) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid lowpass height\n");
|
|
ret = AVERROR(EINVAL);
|
|
break;
|
|
}
|
|
s->plane[s->channel_num].band[0][0].height = data;
|
|
} else if (tag == 1)
|
|
av_log(avctx, AV_LOG_DEBUG, "Sample type? %"PRIu16"\n", data);
|
|
else if (tag == 10) {
|
|
if (data != 0) {
|
|
avpriv_report_missing_feature(avctx, "Transform type of %"PRIu16, data);
|
|
ret = AVERROR_PATCHWELCOME;
|
|
break;
|
|
}
|
|
av_log(avctx, AV_LOG_DEBUG, "Transform-type? %"PRIu16"\n", data);
|
|
} else if (abstag >= 0x4000 && abstag <= 0x40ff) {
|
|
if (abstag == 0x4001)
|
|
s->peak.level = 0;
|
|
av_log(avctx, AV_LOG_DEBUG, "Small chunk length %d %s\n", data * 4, tag < 0 ? "optional" : "required");
|
|
bytestream2_skipu(&gb, data * 4);
|
|
} else if (tag == 23) {
|
|
av_log(avctx, AV_LOG_DEBUG, "Skip frame\n");
|
|
avpriv_report_missing_feature(avctx, "Skip frame");
|
|
ret = AVERROR_PATCHWELCOME;
|
|
break;
|
|
} else if (tag == 2) {
|
|
av_log(avctx, AV_LOG_DEBUG, "tag=2 header - skipping %i tag/value pairs\n", data);
|
|
if (data > bytestream2_get_bytes_left(&gb) / 4) {
|
|
av_log(avctx, AV_LOG_ERROR, "too many tag/value pairs (%d)\n", data);
|
|
ret = AVERROR_INVALIDDATA;
|
|
break;
|
|
}
|
|
for (i = 0; i < data; i++) {
|
|
uint16_t tag2 = bytestream2_get_be16(&gb);
|
|
uint16_t val2 = bytestream2_get_be16(&gb);
|
|
av_log(avctx, AV_LOG_DEBUG, "Tag/Value = %x %x\n", tag2, val2);
|
|
}
|
|
} else if (tag == 41) {
|
|
av_log(avctx, AV_LOG_DEBUG, "Highpass width %i channel %i level %i subband %i\n", data, s->channel_num, s->level, s->subband_num);
|
|
if (data < 3) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid highpass width\n");
|
|
ret = AVERROR(EINVAL);
|
|
break;
|
|
}
|
|
s->plane[s->channel_num].band[s->level][s->subband_num].width = data;
|
|
s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);
|
|
} else if (tag == 42) {
|
|
av_log(avctx, AV_LOG_DEBUG, "Highpass height %i\n", data);
|
|
if (data < 3) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid highpass height\n");
|
|
ret = AVERROR(EINVAL);
|
|
break;
|
|
}
|
|
s->plane[s->channel_num].band[s->level][s->subband_num].height = data;
|
|
} else if (tag == 49) {
|
|
av_log(avctx, AV_LOG_DEBUG, "Highpass width2 %i\n", data);
|
|
if (data < 3) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid highpass width2\n");
|
|
ret = AVERROR(EINVAL);
|
|
break;
|
|
}
|
|
s->plane[s->channel_num].band[s->level][s->subband_num].width = data;
|
|
s->plane[s->channel_num].band[s->level][s->subband_num].stride = FFALIGN(data, 8);
|
|
} else if (tag == 50) {
|
|
av_log(avctx, AV_LOG_DEBUG, "Highpass height2 %i\n", data);
|
|
if (data < 3) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid highpass height2\n");
|
|
ret = AVERROR(EINVAL);
|
|
break;
|
|
}
|
|
s->plane[s->channel_num].band[s->level][s->subband_num].height = data;
|
|
} else if (tag == 71) {
|
|
s->codebook = data;
|
|
av_log(avctx, AV_LOG_DEBUG, "Codebook %i\n", s->codebook);
|
|
} else if (tag == 72) {
|
|
s->codebook = data & 0xf;
|
|
s->difference_coding = (data >> 4) & 1;
|
|
av_log(avctx, AV_LOG_DEBUG, "Other codebook? %i\n", s->codebook);
|
|
} else if (tag == 70) {
|
|
av_log(avctx, AV_LOG_DEBUG, "Subsampling or bit-depth flag? %i\n", data);
|
|
if (!(data == 10 || data == 12)) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid bits per channel\n");
|
|
ret = AVERROR(EINVAL);
|
|
break;
|
|
}
|
|
s->bpc = data;
|
|
} else if (tag == 84) {
|
|
av_log(avctx, AV_LOG_DEBUG, "Sample format? %i\n", data);
|
|
if (data == 1)
|
|
s->coded_format = AV_PIX_FMT_YUV422P10;
|
|
else if (data == 3)
|
|
s->coded_format = AV_PIX_FMT_GBRP12;
|
|
else if (data == 4)
|
|
s->coded_format = AV_PIX_FMT_GBRAP12;
|
|
else {
|
|
avpriv_report_missing_feature(avctx, "Sample format of %"PRIu16, data);
|
|
ret = AVERROR_PATCHWELCOME;
|
|
break;
|
|
}
|
|
planes = av_pix_fmt_count_planes(s->coded_format);
|
|
} else if (tag == -85) {
|
|
av_log(avctx, AV_LOG_DEBUG, "Cropped height %"PRIu16"\n", data);
|
|
s->cropped_height = data;
|
|
} else if (tag == -75) {
|
|
s->peak.offset &= ~0xffff;
|
|
s->peak.offset |= (data & 0xffff);
|
|
s->peak.base = gb;
|
|
s->peak.level = 0;
|
|
} else if (tag == -76) {
|
|
s->peak.offset &= 0xffff;
|
|
s->peak.offset |= (data & 0xffffU)<<16;
|
|
s->peak.base = gb;
|
|
s->peak.level = 0;
|
|
} else if (tag == -74 && s->peak.offset) {
|
|
s->peak.level = data;
|
|
bytestream2_seek(&s->peak.base, s->peak.offset - 4, SEEK_CUR);
|
|
} else
|
|
av_log(avctx, AV_LOG_DEBUG, "Unknown tag %i data %x\n", tag, data);
|
|
|
|
/* Some kind of end of header tag */
|
|
if (tag == 4 && data == 0x1a4a && s->coded_width && s->coded_height &&
|
|
s->coded_format != AV_PIX_FMT_NONE) {
|
|
if (s->a_width != s->coded_width || s->a_height != s->coded_height ||
|
|
s->a_format != s->coded_format) {
|
|
free_buffers(s);
|
|
if ((ret = alloc_buffers(avctx)) < 0) {
|
|
free_buffers(s);
|
|
return ret;
|
|
}
|
|
}
|
|
ret = ff_set_dimensions(avctx, s->coded_width, s->coded_height);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (s->cropped_height)
|
|
avctx->height = s->cropped_height;
|
|
frame.f->width =
|
|
frame.f->height = 0;
|
|
|
|
if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
|
|
return ret;
|
|
|
|
s->coded_width = 0;
|
|
s->coded_height = 0;
|
|
s->coded_format = AV_PIX_FMT_NONE;
|
|
got_buffer = 1;
|
|
}
|
|
coeff_data = s->plane[s->channel_num].subband[s->subband_num_actual];
|
|
|
|
/* Lowpass coefficients */
|
|
if (tag == 4 && data == 0xf0f && s->a_width && s->a_height) {
|
|
int lowpass_height = s->plane[s->channel_num].band[0][0].height;
|
|
int lowpass_width = s->plane[s->channel_num].band[0][0].width;
|
|
int lowpass_a_height = s->plane[s->channel_num].band[0][0].a_height;
|
|
int lowpass_a_width = s->plane[s->channel_num].band[0][0].a_width;
|
|
|
|
if (!got_buffer) {
|
|
av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
|
|
if (lowpass_height > lowpass_a_height || lowpass_width > lowpass_a_width ||
|
|
lowpass_a_width * lowpass_a_height * sizeof(int16_t) > bytestream2_get_bytes_left(&gb)) {
|
|
av_log(avctx, AV_LOG_ERROR, "Too many lowpass coefficients\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Start of lowpass coeffs component %d height:%d, width:%d\n", s->channel_num, lowpass_height, lowpass_width);
|
|
for (i = 0; i < lowpass_height; i++) {
|
|
for (j = 0; j < lowpass_width; j++)
|
|
coeff_data[j] = bytestream2_get_be16u(&gb);
|
|
|
|
coeff_data += lowpass_width;
|
|
}
|
|
|
|
/* Align to mod-4 position to continue reading tags */
|
|
bytestream2_seek(&gb, bytestream2_tell(&gb) & 3, SEEK_CUR);
|
|
|
|
/* Copy last line of coefficients if odd height */
|
|
if (lowpass_height & 1) {
|
|
memcpy(&coeff_data[lowpass_height * lowpass_width],
|
|
&coeff_data[(lowpass_height - 1) * lowpass_width],
|
|
lowpass_width * sizeof(*coeff_data));
|
|
}
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Lowpass coefficients %d\n", lowpass_width * lowpass_height);
|
|
}
|
|
|
|
if (tag == 55 && s->subband_num_actual != 255 && s->a_width && s->a_height) {
|
|
int highpass_height = s->plane[s->channel_num].band[s->level][s->subband_num].height;
|
|
int highpass_width = s->plane[s->channel_num].band[s->level][s->subband_num].width;
|
|
int highpass_a_width = s->plane[s->channel_num].band[s->level][s->subband_num].a_width;
|
|
int highpass_a_height = s->plane[s->channel_num].band[s->level][s->subband_num].a_height;
|
|
int highpass_stride = s->plane[s->channel_num].band[s->level][s->subband_num].stride;
|
|
int expected;
|
|
int a_expected = highpass_a_height * highpass_a_width;
|
|
int level, run, coeff;
|
|
int count = 0, bytes;
|
|
|
|
if (!got_buffer) {
|
|
av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
|
|
if (highpass_height > highpass_a_height || highpass_width > highpass_a_width || a_expected < highpass_height * (uint64_t)highpass_stride) {
|
|
av_log(avctx, AV_LOG_ERROR, "Too many highpass coefficients\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
expected = highpass_height * highpass_stride;
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Start subband coeffs plane %i level %i codebook %i expected %i\n", s->channel_num, s->level, s->codebook, expected);
|
|
|
|
init_get_bits(&s->gb, gb.buffer, bytestream2_get_bytes_left(&gb) * 8);
|
|
{
|
|
OPEN_READER(re, &s->gb);
|
|
if (!s->codebook) {
|
|
while (1) {
|
|
UPDATE_CACHE(re, &s->gb);
|
|
GET_RL_VLC(level, run, re, &s->gb, s->table_9_rl_vlc,
|
|
VLC_BITS, 3, 1);
|
|
|
|
/* escape */
|
|
if (level == 64)
|
|
break;
|
|
|
|
count += run;
|
|
|
|
if (count > expected)
|
|
break;
|
|
|
|
coeff = dequant_and_decompand(level, s->quantisation, 0);
|
|
for (i = 0; i < run; i++)
|
|
*coeff_data++ = coeff;
|
|
}
|
|
} else {
|
|
while (1) {
|
|
UPDATE_CACHE(re, &s->gb);
|
|
GET_RL_VLC(level, run, re, &s->gb, s->table_18_rl_vlc,
|
|
VLC_BITS, 3, 1);
|
|
|
|
/* escape */
|
|
if (level == 255 && run == 2)
|
|
break;
|
|
|
|
count += run;
|
|
|
|
if (count > expected)
|
|
break;
|
|
|
|
coeff = dequant_and_decompand(level, s->quantisation, s->codebook);
|
|
for (i = 0; i < run; i++)
|
|
*coeff_data++ = coeff;
|
|
}
|
|
}
|
|
CLOSE_READER(re, &s->gb);
|
|
}
|
|
|
|
if (count > expected) {
|
|
av_log(avctx, AV_LOG_ERROR, "Escape codeword not found, probably corrupt data\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
if (s->peak.level)
|
|
peak_table(coeff_data - count, &s->peak, count);
|
|
if (s->difference_coding)
|
|
difference_coding(s->plane[s->channel_num].subband[s->subband_num_actual], highpass_width, highpass_height);
|
|
|
|
bytes = FFALIGN(AV_CEIL_RSHIFT(get_bits_count(&s->gb), 3), 4);
|
|
if (bytes > bytestream2_get_bytes_left(&gb)) {
|
|
av_log(avctx, AV_LOG_ERROR, "Bitstream overread error\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
} else
|
|
bytestream2_seek(&gb, bytes, SEEK_CUR);
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "End subband coeffs %i extra %i\n", count, count - expected);
|
|
s->codebook = 0;
|
|
|
|
/* Copy last line of coefficients if odd height */
|
|
if (highpass_height & 1) {
|
|
memcpy(&coeff_data[highpass_height * highpass_stride],
|
|
&coeff_data[(highpass_height - 1) * highpass_stride],
|
|
highpass_stride * sizeof(*coeff_data));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!s->a_width || !s->a_height || s->a_format == AV_PIX_FMT_NONE ||
|
|
s->coded_width || s->coded_height || s->coded_format != AV_PIX_FMT_NONE) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid dimensions\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
|
|
if (!got_buffer) {
|
|
av_log(avctx, AV_LOG_ERROR, "No end of header tag found\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
|
|
planes = av_pix_fmt_count_planes(avctx->pix_fmt);
|
|
for (plane = 0; plane < planes && !ret; plane++) {
|
|
/* level 1 */
|
|
int lowpass_height = s->plane[plane].band[0][0].height;
|
|
int lowpass_width = s->plane[plane].band[0][0].width;
|
|
int highpass_stride = s->plane[plane].band[0][1].stride;
|
|
int act_plane = plane == 1 ? 2 : plane == 2 ? 1 : plane;
|
|
int16_t *low, *high, *output, *dst;
|
|
|
|
if (lowpass_height > s->plane[plane].band[0][0].a_height || lowpass_width > s->plane[plane].band[0][0].a_width ||
|
|
!highpass_stride || s->plane[plane].band[0][1].width > s->plane[plane].band[0][1].a_width) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Decoding level 1 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
|
|
|
|
low = s->plane[plane].subband[0];
|
|
high = s->plane[plane].subband[2];
|
|
output = s->plane[plane].l_h[0];
|
|
for (i = 0; i < lowpass_width; i++) {
|
|
vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
|
|
low++;
|
|
high++;
|
|
output++;
|
|
}
|
|
|
|
low = s->plane[plane].subband[1];
|
|
high = s->plane[plane].subband[3];
|
|
output = s->plane[plane].l_h[1];
|
|
|
|
for (i = 0; i < lowpass_width; i++) {
|
|
// note the stride of "low" is highpass_stride
|
|
vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
|
|
low++;
|
|
high++;
|
|
output++;
|
|
}
|
|
|
|
low = s->plane[plane].l_h[0];
|
|
high = s->plane[plane].l_h[1];
|
|
output = s->plane[plane].subband[0];
|
|
for (i = 0; i < lowpass_height * 2; i++) {
|
|
horiz_filter(output, low, high, lowpass_width);
|
|
low += lowpass_width;
|
|
high += lowpass_width;
|
|
output += lowpass_width * 2;
|
|
}
|
|
if (s->bpc == 12) {
|
|
output = s->plane[plane].subband[0];
|
|
for (i = 0; i < lowpass_height * 2; i++) {
|
|
for (j = 0; j < lowpass_width * 2; j++)
|
|
output[j] *= 4;
|
|
|
|
output += lowpass_width * 2;
|
|
}
|
|
}
|
|
|
|
/* level 2 */
|
|
lowpass_height = s->plane[plane].band[1][1].height;
|
|
lowpass_width = s->plane[plane].band[1][1].width;
|
|
highpass_stride = s->plane[plane].band[1][1].stride;
|
|
|
|
if (lowpass_height > s->plane[plane].band[1][1].a_height || lowpass_width > s->plane[plane].band[1][1].a_width ||
|
|
!highpass_stride || s->plane[plane].band[1][1].width > s->plane[plane].band[1][1].a_width) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Level 2 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
|
|
|
|
low = s->plane[plane].subband[0];
|
|
high = s->plane[plane].subband[5];
|
|
output = s->plane[plane].l_h[3];
|
|
for (i = 0; i < lowpass_width; i++) {
|
|
vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
|
|
low++;
|
|
high++;
|
|
output++;
|
|
}
|
|
|
|
low = s->plane[plane].subband[4];
|
|
high = s->plane[plane].subband[6];
|
|
output = s->plane[plane].l_h[4];
|
|
for (i = 0; i < lowpass_width; i++) {
|
|
vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
|
|
low++;
|
|
high++;
|
|
output++;
|
|
}
|
|
|
|
low = s->plane[plane].l_h[3];
|
|
high = s->plane[plane].l_h[4];
|
|
output = s->plane[plane].subband[0];
|
|
for (i = 0; i < lowpass_height * 2; i++) {
|
|
horiz_filter(output, low, high, lowpass_width);
|
|
low += lowpass_width;
|
|
high += lowpass_width;
|
|
output += lowpass_width * 2;
|
|
}
|
|
|
|
output = s->plane[plane].subband[0];
|
|
for (i = 0; i < lowpass_height * 2; i++) {
|
|
for (j = 0; j < lowpass_width * 2; j++)
|
|
output[j] *= 4;
|
|
|
|
output += lowpass_width * 2;
|
|
}
|
|
|
|
/* level 3 */
|
|
lowpass_height = s->plane[plane].band[2][1].height;
|
|
lowpass_width = s->plane[plane].band[2][1].width;
|
|
highpass_stride = s->plane[plane].band[2][1].stride;
|
|
|
|
if (lowpass_height > s->plane[plane].band[2][1].a_height || lowpass_width > s->plane[plane].band[2][1].a_width ||
|
|
!highpass_stride || s->plane[plane].band[2][1].width > s->plane[plane].band[2][1].a_width) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid plane dimensions\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "Level 3 plane %i %i %i %i\n", plane, lowpass_height, lowpass_width, highpass_stride);
|
|
if (s->progressive) {
|
|
low = s->plane[plane].subband[0];
|
|
high = s->plane[plane].subband[8];
|
|
output = s->plane[plane].l_h[6];
|
|
for (i = 0; i < lowpass_width; i++) {
|
|
vert_filter(output, lowpass_width, low, lowpass_width, high, highpass_stride, lowpass_height);
|
|
low++;
|
|
high++;
|
|
output++;
|
|
}
|
|
|
|
low = s->plane[plane].subband[7];
|
|
high = s->plane[plane].subband[9];
|
|
output = s->plane[plane].l_h[7];
|
|
for (i = 0; i < lowpass_width; i++) {
|
|
vert_filter(output, lowpass_width, low, highpass_stride, high, highpass_stride, lowpass_height);
|
|
low++;
|
|
high++;
|
|
output++;
|
|
}
|
|
|
|
dst = (int16_t *)pic->data[act_plane];
|
|
low = s->plane[plane].l_h[6];
|
|
high = s->plane[plane].l_h[7];
|
|
for (i = 0; i < lowpass_height * 2; i++) {
|
|
horiz_filter_clip(dst, low, high, lowpass_width, s->bpc);
|
|
if (avctx->pix_fmt == AV_PIX_FMT_GBRAP12 && act_plane == 3)
|
|
process_alpha(dst, lowpass_width * 2);
|
|
low += lowpass_width;
|
|
high += lowpass_width;
|
|
dst += pic->linesize[act_plane] / 2;
|
|
}
|
|
} else {
|
|
av_log(avctx, AV_LOG_DEBUG, "interlaced frame ? %d", pic->interlaced_frame);
|
|
pic->interlaced_frame = 1;
|
|
low = s->plane[plane].subband[0];
|
|
high = s->plane[plane].subband[7];
|
|
output = s->plane[plane].l_h[6];
|
|
for (i = 0; i < lowpass_height; i++) {
|
|
horiz_filter(output, low, high, lowpass_width);
|
|
low += lowpass_width;
|
|
high += lowpass_width;
|
|
output += lowpass_width * 2;
|
|
}
|
|
|
|
low = s->plane[plane].subband[8];
|
|
high = s->plane[plane].subband[9];
|
|
output = s->plane[plane].l_h[7];
|
|
for (i = 0; i < lowpass_height; i++) {
|
|
horiz_filter(output, low, high, lowpass_width);
|
|
low += lowpass_width;
|
|
high += lowpass_width;
|
|
output += lowpass_width * 2;
|
|
}
|
|
|
|
dst = (int16_t *)pic->data[act_plane];
|
|
low = s->plane[plane].l_h[6];
|
|
high = s->plane[plane].l_h[7];
|
|
for (i = 0; i < lowpass_height; i++) {
|
|
interlaced_vertical_filter(dst, low, high, lowpass_width * 2, pic->linesize[act_plane]/2, act_plane);
|
|
low += lowpass_width * 2;
|
|
high += lowpass_width * 2;
|
|
dst += pic->linesize[act_plane];
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
end:
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
*got_frame = 1;
|
|
return avpkt->size;
|
|
}
|
|
|
|
static av_cold int cfhd_close(AVCodecContext *avctx)
|
|
{
|
|
CFHDContext *s = avctx->priv_data;
|
|
|
|
free_buffers(s);
|
|
|
|
if (!avctx->internal->is_copy) {
|
|
ff_free_vlc(&s->vlc_9);
|
|
ff_free_vlc(&s->vlc_18);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_cfhd_decoder = {
|
|
.name = "cfhd",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Cineform HD"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_CFHD,
|
|
.priv_data_size = sizeof(CFHDContext),
|
|
.init = cfhd_init,
|
|
.close = cfhd_close,
|
|
.decode = cfhd_decode,
|
|
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
|
|
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
|
|
};
|