2011-09-21 11:09:32 +00:00
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/*
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* Apple ProRes compatible decoder
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*
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* Copyright (c) 2010-2011 Maxim Poliakovski
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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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* This is a decoder for Apple ProRes 422 SD/HQ/LT/Proxy and ProRes 4444.
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* It is used for storing and editing high definition video data in Apple's Final Cut Pro.
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*
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* @see http://wiki.multimedia.cx/index.php?title=Apple_ProRes
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*/
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2011-12-16 21:19:50 +00:00
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#define LONG_BITSTREAM_READER // some ProRes vlc codes require up to 28 bits to be read at once
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2011-09-21 11:09:32 +00:00
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#include <stdint.h>
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#include "libavutil/intmath.h"
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#include "avcodec.h"
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2013-01-20 00:02:29 +00:00
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#include "dsputil.h"
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2012-11-10 12:22:56 +00:00
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#include "internal.h"
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2011-12-10 12:40:39 +00:00
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#include "proresdata.h"
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2011-10-06 15:03:38 +00:00
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#include "proresdsp.h"
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2011-09-21 11:09:32 +00:00
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#include "get_bits.h"
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2011-10-06 14:17:44 +00:00
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typedef struct {
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const uint8_t *index; ///< pointers to the data of this slice
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int slice_num;
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int x_pos, y_pos;
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int slice_width;
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2012-02-13 18:27:48 +00:00
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int prev_slice_sf; ///< scalefactor of the previous decoded slice
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2013-01-20 00:02:29 +00:00
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DECLARE_ALIGNED(16, int16_t, blocks)[8 * 4 * 64];
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2012-02-13 18:27:48 +00:00
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DECLARE_ALIGNED(16, int16_t, qmat_luma_scaled)[64];
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DECLARE_ALIGNED(16, int16_t, qmat_chroma_scaled)[64];
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2011-10-06 14:17:44 +00:00
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} ProresThreadData;
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2011-09-21 11:09:32 +00:00
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typedef struct {
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2011-10-06 15:03:38 +00:00
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ProresDSPContext dsp;
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2012-11-21 20:34:46 +00:00
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AVFrame *frame;
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2011-09-21 11:09:32 +00:00
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ScanTable scantable;
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int scantable_type; ///< -1 = uninitialized, 0 = progressive, 1/2 = interlaced
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int frame_type; ///< 0 = progressive, 1 = top-field first, 2 = bottom-field first
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int pic_format; ///< 2 = 422, 3 = 444
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uint8_t qmat_luma[64]; ///< dequantization matrix for luma
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uint8_t qmat_chroma[64]; ///< dequantization matrix for chroma
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int qmat_changed; ///< 1 - global quantization matrices changed
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int total_slices; ///< total number of slices in a picture
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2011-10-06 14:17:44 +00:00
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ProresThreadData *slice_data;
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int pic_num;
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2011-09-21 11:09:32 +00:00
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int chroma_factor;
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int mb_chroma_factor;
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int num_chroma_blocks; ///< number of chrominance blocks in a macroblock
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int num_x_slices;
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int num_y_slices;
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int slice_width_factor;
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int slice_height_factor;
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int num_x_mbs;
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int num_y_mbs;
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2011-10-14 10:18:23 +00:00
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int alpha_info;
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2011-09-21 11:09:32 +00:00
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} ProresContext;
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static av_cold int decode_init(AVCodecContext *avctx)
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{
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ProresContext *ctx = avctx->priv_data;
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ctx->total_slices = 0;
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2011-10-06 14:17:44 +00:00
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ctx->slice_data = NULL;
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2011-09-21 11:09:32 +00:00
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2011-10-06 15:03:38 +00:00
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avctx->bits_per_raw_sample = PRORES_BITS_PER_SAMPLE;
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ff_proresdsp_init(&ctx->dsp);
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2011-09-21 11:09:32 +00:00
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ctx->scantable_type = -1; // set scantable type to uninitialized
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memset(ctx->qmat_luma, 4, 64);
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memset(ctx->qmat_chroma, 4, 64);
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return 0;
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}
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static int decode_frame_header(ProresContext *ctx, const uint8_t *buf,
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const int data_size, AVCodecContext *avctx)
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{
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int hdr_size, version, width, height, flags;
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const uint8_t *ptr;
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hdr_size = AV_RB16(buf);
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if (hdr_size > data_size) {
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2011-09-22 21:51:06 +00:00
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av_log(avctx, AV_LOG_ERROR, "frame data too small\n");
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2011-09-22 21:51:07 +00:00
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return AVERROR_INVALIDDATA;
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2011-09-21 11:09:32 +00:00
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}
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version = AV_RB16(buf + 2);
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if (version >= 2) {
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av_log(avctx, AV_LOG_ERROR,
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"unsupported header version: %d\n", version);
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2011-09-22 21:51:07 +00:00
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return AVERROR_INVALIDDATA;
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2011-09-21 11:09:32 +00:00
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}
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width = AV_RB16(buf + 8);
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height = AV_RB16(buf + 10);
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if (width != avctx->width || height != avctx->height) {
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av_log(avctx, AV_LOG_ERROR,
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2011-09-22 21:51:06 +00:00
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"picture dimension changed: old: %d x %d, new: %d x %d\n",
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2011-09-21 11:09:32 +00:00
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avctx->width, avctx->height, width, height);
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2011-09-22 21:51:07 +00:00
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return AVERROR_INVALIDDATA;
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2011-09-21 11:09:32 +00:00
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}
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ctx->frame_type = (buf[12] >> 2) & 3;
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if (ctx->frame_type > 2) {
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av_log(avctx, AV_LOG_ERROR,
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2011-09-22 21:51:06 +00:00
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"unsupported frame type: %d\n", ctx->frame_type);
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2011-09-22 21:51:07 +00:00
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return AVERROR_INVALIDDATA;
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2011-09-21 11:09:32 +00:00
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}
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ctx->chroma_factor = (buf[12] >> 6) & 3;
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ctx->mb_chroma_factor = ctx->chroma_factor + 2;
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ctx->num_chroma_blocks = (1 << ctx->chroma_factor) >> 1;
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switch (ctx->chroma_factor) {
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case 2:
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2012-10-06 10:10:34 +00:00
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avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
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2011-09-21 11:09:32 +00:00
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break;
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case 3:
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2012-10-06 10:10:34 +00:00
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avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
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2011-09-21 11:09:32 +00:00
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break;
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default:
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av_log(avctx, AV_LOG_ERROR,
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2011-09-22 21:51:06 +00:00
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"unsupported picture format: %d\n", ctx->pic_format);
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2011-09-22 21:51:07 +00:00
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return AVERROR_INVALIDDATA;
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2011-09-21 11:09:32 +00:00
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}
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if (ctx->scantable_type != ctx->frame_type) {
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if (!ctx->frame_type)
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ff_init_scantable(ctx->dsp.idct_permutation, &ctx->scantable,
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2011-12-10 12:40:39 +00:00
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ff_prores_progressive_scan);
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2011-09-21 11:09:32 +00:00
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else
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ff_init_scantable(ctx->dsp.idct_permutation, &ctx->scantable,
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2011-12-10 12:40:39 +00:00
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ff_prores_interlaced_scan);
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2011-09-21 11:09:32 +00:00
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ctx->scantable_type = ctx->frame_type;
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}
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if (ctx->frame_type) { /* if interlaced */
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2012-11-21 20:34:46 +00:00
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ctx->frame->interlaced_frame = 1;
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ctx->frame->top_field_first = ctx->frame_type & 1;
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2013-01-21 18:40:35 +00:00
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} else {
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2012-11-21 20:34:46 +00:00
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ctx->frame->interlaced_frame = 0;
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2011-09-21 11:09:32 +00:00
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}
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2012-02-28 18:44:07 +00:00
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avctx->color_primaries = buf[14];
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avctx->color_trc = buf[15];
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avctx->colorspace = buf[16];
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2011-10-14 10:18:23 +00:00
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ctx->alpha_info = buf[17] & 0xf;
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if (ctx->alpha_info)
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2012-10-22 12:35:13 +00:00
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av_log_missing_feature(avctx, "Alpha channel", 0);
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2011-10-14 10:18:23 +00:00
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2011-09-21 11:09:32 +00:00
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ctx->qmat_changed = 0;
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ptr = buf + 20;
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flags = buf[19];
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if (flags & 2) {
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if (ptr - buf > hdr_size - 64) {
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2011-09-22 21:51:06 +00:00
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av_log(avctx, AV_LOG_ERROR, "header data too small\n");
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2011-09-22 21:51:07 +00:00
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return AVERROR_INVALIDDATA;
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2011-09-21 11:09:32 +00:00
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}
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if (memcmp(ctx->qmat_luma, ptr, 64)) {
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memcpy(ctx->qmat_luma, ptr, 64);
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ctx->qmat_changed = 1;
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}
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ptr += 64;
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} else {
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memset(ctx->qmat_luma, 4, 64);
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ctx->qmat_changed = 1;
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}
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if (flags & 1) {
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if (ptr - buf > hdr_size - 64) {
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2011-09-22 21:51:06 +00:00
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av_log(avctx, AV_LOG_ERROR, "header data too small\n");
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2011-09-21 11:09:32 +00:00
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return -1;
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}
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if (memcmp(ctx->qmat_chroma, ptr, 64)) {
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memcpy(ctx->qmat_chroma, ptr, 64);
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ctx->qmat_changed = 1;
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}
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} else {
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memset(ctx->qmat_chroma, 4, 64);
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ctx->qmat_changed = 1;
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}
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return hdr_size;
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}
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static int decode_picture_header(ProresContext *ctx, const uint8_t *buf,
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const int data_size, AVCodecContext *avctx)
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{
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int i, hdr_size, pic_data_size, num_slices;
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int slice_width_factor, slice_height_factor;
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int remainder, num_x_slices;
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const uint8_t *data_ptr, *index_ptr;
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hdr_size = data_size > 0 ? buf[0] >> 3 : 0;
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if (hdr_size < 8 || hdr_size > data_size) {
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2011-09-22 21:51:06 +00:00
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av_log(avctx, AV_LOG_ERROR, "picture header too small\n");
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2011-09-22 21:51:07 +00:00
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return AVERROR_INVALIDDATA;
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2011-09-21 11:09:32 +00:00
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}
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pic_data_size = AV_RB32(buf + 1);
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if (pic_data_size > data_size) {
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2011-09-22 21:51:06 +00:00
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av_log(avctx, AV_LOG_ERROR, "picture data too small\n");
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2011-09-22 21:51:07 +00:00
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return AVERROR_INVALIDDATA;
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2011-09-21 11:09:32 +00:00
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}
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slice_width_factor = buf[7] >> 4;
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slice_height_factor = buf[7] & 0xF;
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if (slice_width_factor > 3 || slice_height_factor) {
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av_log(avctx, AV_LOG_ERROR,
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2011-09-22 21:51:06 +00:00
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"unsupported slice dimension: %d x %d\n",
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2011-09-21 11:09:32 +00:00
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1 << slice_width_factor, 1 << slice_height_factor);
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2011-09-22 21:51:07 +00:00
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return AVERROR_INVALIDDATA;
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2011-09-21 11:09:32 +00:00
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}
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ctx->slice_width_factor = slice_width_factor;
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ctx->slice_height_factor = slice_height_factor;
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ctx->num_x_mbs = (avctx->width + 15) >> 4;
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2011-09-22 21:51:05 +00:00
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ctx->num_y_mbs = (avctx->height +
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2012-11-21 20:34:46 +00:00
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(1 << (4 + ctx->frame->interlaced_frame)) - 1) >>
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(4 + ctx->frame->interlaced_frame);
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2011-09-21 11:09:32 +00:00
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remainder = ctx->num_x_mbs & ((1 << slice_width_factor) - 1);
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num_x_slices = (ctx->num_x_mbs >> slice_width_factor) + (remainder & 1) +
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((remainder >> 1) & 1) + ((remainder >> 2) & 1);
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num_slices = num_x_slices * ctx->num_y_mbs;
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if (num_slices != AV_RB16(buf + 5)) {
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2011-09-22 21:51:06 +00:00
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av_log(avctx, AV_LOG_ERROR, "invalid number of slices\n");
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2011-09-22 21:51:07 +00:00
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return AVERROR_INVALIDDATA;
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2011-09-21 11:09:32 +00:00
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}
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if (ctx->total_slices != num_slices) {
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2011-10-06 14:17:44 +00:00
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av_freep(&ctx->slice_data);
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ctx->slice_data = av_malloc((num_slices + 1) * sizeof(ctx->slice_data[0]));
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if (!ctx->slice_data)
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2011-09-21 11:09:32 +00:00
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return AVERROR(ENOMEM);
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ctx->total_slices = num_slices;
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}
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if (hdr_size + num_slices * 2 > data_size) {
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2011-09-22 21:51:06 +00:00
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av_log(avctx, AV_LOG_ERROR, "slice table too small\n");
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2011-09-22 21:51:07 +00:00
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return AVERROR_INVALIDDATA;
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2011-09-21 11:09:32 +00:00
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}
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/* parse slice table allowing quick access to the slice data */
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index_ptr = buf + hdr_size;
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data_ptr = index_ptr + num_slices * 2;
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for (i = 0; i < num_slices; i++) {
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2011-10-06 14:17:44 +00:00
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ctx->slice_data[i].index = data_ptr;
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2012-02-13 18:27:48 +00:00
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ctx->slice_data[i].prev_slice_sf = 0;
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2011-09-21 11:09:32 +00:00
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data_ptr += AV_RB16(index_ptr + i * 2);
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}
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2011-10-06 14:17:44 +00:00
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ctx->slice_data[i].index = data_ptr;
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2012-02-13 18:27:48 +00:00
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ctx->slice_data[i].prev_slice_sf = 0;
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2011-09-21 11:09:32 +00:00
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if (data_ptr > buf + data_size) {
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2011-09-22 21:51:06 +00:00
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av_log(avctx, AV_LOG_ERROR, "out of slice data\n");
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2011-09-21 11:09:32 +00:00
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return -1;
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}
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return pic_data_size;
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}
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|
|
|
|
|
/**
|
|
|
|
* Read an unsigned rice/exp golomb codeword.
|
|
|
|
*/
|
2012-02-21 21:36:15 +00:00
|
|
|
static inline int decode_vlc_codeword(GetBitContext *gb, unsigned codebook)
|
2011-09-21 11:09:32 +00:00
|
|
|
{
|
|
|
|
unsigned int rice_order, exp_order, switch_bits;
|
|
|
|
unsigned int buf, code;
|
|
|
|
int log, prefix_len, len;
|
|
|
|
|
|
|
|
OPEN_READER(re, gb);
|
|
|
|
UPDATE_CACHE(re, gb);
|
|
|
|
buf = GET_CACHE(re, gb);
|
|
|
|
|
|
|
|
/* number of prefix bits to switch between Rice and expGolomb */
|
|
|
|
switch_bits = (codebook & 3) + 1;
|
|
|
|
rice_order = codebook >> 5; /* rice code order */
|
|
|
|
exp_order = (codebook >> 2) & 7; /* exp golomb code order */
|
|
|
|
|
|
|
|
log = 31 - av_log2(buf); /* count prefix bits (zeroes) */
|
|
|
|
|
|
|
|
if (log < switch_bits) { /* ok, we got a rice code */
|
|
|
|
if (!rice_order) {
|
|
|
|
/* shortcut for faster decoding of rice codes without remainder */
|
|
|
|
code = log;
|
|
|
|
LAST_SKIP_BITS(re, gb, log + 1);
|
|
|
|
} else {
|
|
|
|
prefix_len = log + 1;
|
2011-09-22 21:51:05 +00:00
|
|
|
code = (log << rice_order) + NEG_USR32(buf << prefix_len, rice_order);
|
2011-09-21 11:09:32 +00:00
|
|
|
LAST_SKIP_BITS(re, gb, prefix_len + rice_order);
|
|
|
|
}
|
|
|
|
} else { /* otherwise we got a exp golomb code */
|
|
|
|
len = (log << 1) - switch_bits + exp_order + 1;
|
|
|
|
code = NEG_USR32(buf, len) - (1 << exp_order) + (switch_bits << rice_order);
|
|
|
|
LAST_SKIP_BITS(re, gb, len);
|
|
|
|
}
|
|
|
|
|
|
|
|
CLOSE_READER(re, gb);
|
|
|
|
|
|
|
|
return code;
|
|
|
|
}
|
|
|
|
|
|
|
|
#define LSB2SIGN(x) (-((x) & 1))
|
|
|
|
#define TOSIGNED(x) (((x) >> 1) ^ LSB2SIGN(x))
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Decode DC coefficients for all blocks in a slice.
|
|
|
|
*/
|
2013-01-20 00:02:29 +00:00
|
|
|
static inline void decode_dc_coeffs(GetBitContext *gb, int16_t *out,
|
2011-09-21 11:09:32 +00:00
|
|
|
int nblocks)
|
|
|
|
{
|
2013-01-20 00:02:29 +00:00
|
|
|
int16_t prev_dc;
|
2011-09-21 11:09:32 +00:00
|
|
|
int i, sign;
|
|
|
|
int16_t delta;
|
|
|
|
unsigned int code;
|
|
|
|
|
|
|
|
code = decode_vlc_codeword(gb, FIRST_DC_CB);
|
|
|
|
out[0] = prev_dc = TOSIGNED(code);
|
|
|
|
|
|
|
|
out += 64; /* move to the DC coeff of the next block */
|
|
|
|
delta = 3;
|
|
|
|
|
|
|
|
for (i = 1; i < nblocks; i++, out += 64) {
|
2011-12-10 12:40:39 +00:00
|
|
|
code = decode_vlc_codeword(gb, ff_prores_dc_codebook[FFMIN(FFABS(delta), 3)]);
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
sign = -(((delta >> 15) & 1) ^ (code & 1));
|
|
|
|
delta = (((code + 1) >> 1) ^ sign) - sign;
|
|
|
|
prev_dc += delta;
|
|
|
|
out[0] = prev_dc;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Decode AC coefficients for all blocks in a slice.
|
|
|
|
*/
|
2013-01-20 00:02:29 +00:00
|
|
|
static inline void decode_ac_coeffs(GetBitContext *gb, int16_t *out,
|
2011-09-21 11:09:32 +00:00
|
|
|
int blocks_per_slice,
|
|
|
|
int plane_size_factor,
|
|
|
|
const uint8_t *scan)
|
|
|
|
{
|
|
|
|
int pos, block_mask, run, level, sign, run_cb_index, lev_cb_index;
|
|
|
|
int max_coeffs, bits_left;
|
|
|
|
|
|
|
|
/* set initial prediction values */
|
|
|
|
run = 4;
|
|
|
|
level = 2;
|
|
|
|
|
|
|
|
max_coeffs = blocks_per_slice << 6;
|
|
|
|
block_mask = blocks_per_slice - 1;
|
|
|
|
|
|
|
|
for (pos = blocks_per_slice - 1; pos < max_coeffs;) {
|
2011-12-10 12:40:39 +00:00
|
|
|
run_cb_index = ff_prores_run_to_cb_index[FFMIN(run, 15)];
|
|
|
|
lev_cb_index = ff_prores_lev_to_cb_index[FFMIN(level, 9)];
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
bits_left = get_bits_left(gb);
|
2011-09-29 00:50:51 +00:00
|
|
|
if (bits_left <= 0 || (bits_left <= 8 && !show_bits(gb, bits_left)))
|
2011-09-21 11:09:32 +00:00
|
|
|
return;
|
|
|
|
|
2011-12-10 12:40:39 +00:00
|
|
|
run = decode_vlc_codeword(gb, ff_prores_ac_codebook[run_cb_index]);
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
bits_left = get_bits_left(gb);
|
2011-09-29 00:50:51 +00:00
|
|
|
if (bits_left <= 0 || (bits_left <= 8 && !show_bits(gb, bits_left)))
|
2011-09-21 11:09:32 +00:00
|
|
|
return;
|
|
|
|
|
2011-12-10 12:40:39 +00:00
|
|
|
level = decode_vlc_codeword(gb, ff_prores_ac_codebook[lev_cb_index]) + 1;
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
pos += run + 1;
|
|
|
|
if (pos >= max_coeffs)
|
|
|
|
break;
|
|
|
|
|
|
|
|
sign = get_sbits(gb, 1);
|
|
|
|
out[((pos & block_mask) << 6) + scan[pos >> plane_size_factor]] =
|
|
|
|
(level ^ sign) - sign;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Decode a slice plane (luma or chroma).
|
|
|
|
*/
|
2011-10-06 14:17:44 +00:00
|
|
|
static void decode_slice_plane(ProresContext *ctx, ProresThreadData *td,
|
|
|
|
const uint8_t *buf,
|
2011-09-21 11:09:32 +00:00
|
|
|
int data_size, uint16_t *out_ptr,
|
|
|
|
int linesize, int mbs_per_slice,
|
|
|
|
int blocks_per_mb, int plane_size_factor,
|
2012-02-28 18:03:09 +00:00
|
|
|
const int16_t *qmat, int is_chroma)
|
2011-09-21 11:09:32 +00:00
|
|
|
{
|
|
|
|
GetBitContext gb;
|
2013-01-20 00:02:29 +00:00
|
|
|
int16_t *block_ptr;
|
2011-10-06 15:03:38 +00:00
|
|
|
int mb_num, blocks_per_slice;
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
blocks_per_slice = mbs_per_slice * blocks_per_mb;
|
|
|
|
|
2011-10-06 14:17:44 +00:00
|
|
|
memset(td->blocks, 0, 8 * 4 * 64 * sizeof(*td->blocks));
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
init_get_bits(&gb, buf, data_size << 3);
|
|
|
|
|
2011-10-06 14:17:44 +00:00
|
|
|
decode_dc_coeffs(&gb, td->blocks, blocks_per_slice);
|
2011-09-21 11:09:32 +00:00
|
|
|
|
2011-10-06 14:17:44 +00:00
|
|
|
decode_ac_coeffs(&gb, td->blocks, blocks_per_slice,
|
2011-09-21 11:09:32 +00:00
|
|
|
plane_size_factor, ctx->scantable.permutated);
|
|
|
|
|
|
|
|
/* inverse quantization, inverse transform and output */
|
2011-10-06 14:17:44 +00:00
|
|
|
block_ptr = td->blocks;
|
2011-09-21 11:09:32 +00:00
|
|
|
|
2012-02-28 18:03:09 +00:00
|
|
|
if (!is_chroma) {
|
|
|
|
for (mb_num = 0; mb_num < mbs_per_slice; mb_num++, out_ptr += blocks_per_mb * 4) {
|
|
|
|
ctx->dsp.idct_put(out_ptr, linesize, block_ptr, qmat);
|
2011-10-06 15:03:38 +00:00
|
|
|
block_ptr += 64;
|
2012-02-28 18:03:09 +00:00
|
|
|
if (blocks_per_mb > 2) {
|
|
|
|
ctx->dsp.idct_put(out_ptr + 8, linesize, block_ptr, qmat);
|
|
|
|
block_ptr += 64;
|
|
|
|
}
|
|
|
|
ctx->dsp.idct_put(out_ptr + linesize * 4, linesize, block_ptr, qmat);
|
|
|
|
block_ptr += 64;
|
|
|
|
if (blocks_per_mb > 2) {
|
|
|
|
ctx->dsp.idct_put(out_ptr + linesize * 4 + 8, linesize, block_ptr, qmat);
|
|
|
|
block_ptr += 64;
|
|
|
|
}
|
2011-10-06 15:03:38 +00:00
|
|
|
}
|
2012-02-28 18:03:09 +00:00
|
|
|
} else {
|
|
|
|
for (mb_num = 0; mb_num < mbs_per_slice; mb_num++, out_ptr += blocks_per_mb * 4) {
|
|
|
|
ctx->dsp.idct_put(out_ptr, linesize, block_ptr, qmat);
|
|
|
|
block_ptr += 64;
|
|
|
|
ctx->dsp.idct_put(out_ptr + linesize * 4, linesize, block_ptr, qmat);
|
2011-10-06 15:03:38 +00:00
|
|
|
block_ptr += 64;
|
2012-02-28 18:03:09 +00:00
|
|
|
if (blocks_per_mb > 2) {
|
|
|
|
ctx->dsp.idct_put(out_ptr + 8, linesize, block_ptr, qmat);
|
|
|
|
block_ptr += 64;
|
|
|
|
ctx->dsp.idct_put(out_ptr + linesize * 4 + 8, linesize, block_ptr, qmat);
|
|
|
|
block_ptr += 64;
|
|
|
|
}
|
2011-10-06 15:03:38 +00:00
|
|
|
}
|
2011-09-21 11:09:32 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2011-12-11 23:36:05 +00:00
|
|
|
static int decode_slice(AVCodecContext *avctx, void *tdata)
|
2011-09-21 11:09:32 +00:00
|
|
|
{
|
2011-12-11 23:36:05 +00:00
|
|
|
ProresThreadData *td = tdata;
|
2011-10-06 14:17:44 +00:00
|
|
|
ProresContext *ctx = avctx->priv_data;
|
|
|
|
int mb_x_pos = td->x_pos;
|
|
|
|
int mb_y_pos = td->y_pos;
|
|
|
|
int pic_num = ctx->pic_num;
|
|
|
|
int slice_num = td->slice_num;
|
|
|
|
int mbs_per_slice = td->slice_width;
|
2011-09-21 11:09:32 +00:00
|
|
|
const uint8_t *buf;
|
|
|
|
uint8_t *y_data, *u_data, *v_data;
|
2012-11-21 20:34:46 +00:00
|
|
|
AVFrame *pic = ctx->frame;
|
2011-09-21 11:09:32 +00:00
|
|
|
int i, sf, slice_width_factor;
|
|
|
|
int slice_data_size, hdr_size, y_data_size, u_data_size, v_data_size;
|
|
|
|
int y_linesize, u_linesize, v_linesize;
|
|
|
|
|
2011-10-06 14:17:44 +00:00
|
|
|
buf = ctx->slice_data[slice_num].index;
|
|
|
|
slice_data_size = ctx->slice_data[slice_num + 1].index - buf;
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
slice_width_factor = av_log2(mbs_per_slice);
|
|
|
|
|
|
|
|
y_data = pic->data[0];
|
|
|
|
u_data = pic->data[1];
|
|
|
|
v_data = pic->data[2];
|
|
|
|
y_linesize = pic->linesize[0];
|
|
|
|
u_linesize = pic->linesize[1];
|
|
|
|
v_linesize = pic->linesize[2];
|
|
|
|
|
|
|
|
if (pic->interlaced_frame) {
|
|
|
|
if (!(pic_num ^ pic->top_field_first)) {
|
|
|
|
y_data += y_linesize;
|
|
|
|
u_data += u_linesize;
|
|
|
|
v_data += v_linesize;
|
|
|
|
}
|
|
|
|
y_linesize <<= 1;
|
|
|
|
u_linesize <<= 1;
|
|
|
|
v_linesize <<= 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (slice_data_size < 6) {
|
2011-09-22 21:51:06 +00:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "slice data too small\n");
|
2011-09-22 21:51:07 +00:00
|
|
|
return AVERROR_INVALIDDATA;
|
2011-09-21 11:09:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* parse slice header */
|
|
|
|
hdr_size = buf[0] >> 3;
|
|
|
|
y_data_size = AV_RB16(buf + 2);
|
|
|
|
u_data_size = AV_RB16(buf + 4);
|
2011-10-15 13:35:49 +00:00
|
|
|
v_data_size = hdr_size > 7 ? AV_RB16(buf + 6) :
|
|
|
|
slice_data_size - y_data_size - u_data_size - hdr_size;
|
2011-09-21 11:09:32 +00:00
|
|
|
|
2011-10-15 13:35:49 +00:00
|
|
|
if (hdr_size + y_data_size + u_data_size + v_data_size > slice_data_size ||
|
|
|
|
v_data_size < 0 || hdr_size < 6) {
|
2011-09-22 21:51:06 +00:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "invalid data size\n");
|
2011-09-22 21:51:07 +00:00
|
|
|
return AVERROR_INVALIDDATA;
|
2011-09-21 11:09:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
sf = av_clip(buf[1], 1, 224);
|
|
|
|
sf = sf > 128 ? (sf - 96) << 2 : sf;
|
|
|
|
|
|
|
|
/* scale quantization matrixes according with slice's scale factor */
|
2011-10-05 12:12:42 +00:00
|
|
|
/* TODO: this can be SIMD-optimized a lot */
|
2012-02-13 18:27:48 +00:00
|
|
|
if (ctx->qmat_changed || sf != td->prev_slice_sf) {
|
|
|
|
td->prev_slice_sf = sf;
|
2011-09-21 11:09:32 +00:00
|
|
|
for (i = 0; i < 64; i++) {
|
2012-02-13 18:27:48 +00:00
|
|
|
td->qmat_luma_scaled[ctx->dsp.idct_permutation[i]] = ctx->qmat_luma[i] * sf;
|
|
|
|
td->qmat_chroma_scaled[ctx->dsp.idct_permutation[i]] = ctx->qmat_chroma[i] * sf;
|
2011-09-21 11:09:32 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* decode luma plane */
|
2011-10-06 14:17:44 +00:00
|
|
|
decode_slice_plane(ctx, td, buf + hdr_size, y_data_size,
|
2011-09-21 11:09:32 +00:00
|
|
|
(uint16_t*) (y_data + (mb_y_pos << 4) * y_linesize +
|
|
|
|
(mb_x_pos << 5)), y_linesize,
|
|
|
|
mbs_per_slice, 4, slice_width_factor + 2,
|
2012-02-28 18:03:09 +00:00
|
|
|
td->qmat_luma_scaled, 0);
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
/* decode U chroma plane */
|
2011-10-06 14:17:44 +00:00
|
|
|
decode_slice_plane(ctx, td, buf + hdr_size + y_data_size, u_data_size,
|
2011-09-21 11:09:32 +00:00
|
|
|
(uint16_t*) (u_data + (mb_y_pos << 4) * u_linesize +
|
|
|
|
(mb_x_pos << ctx->mb_chroma_factor)),
|
|
|
|
u_linesize, mbs_per_slice, ctx->num_chroma_blocks,
|
|
|
|
slice_width_factor + ctx->chroma_factor - 1,
|
2012-02-28 18:03:09 +00:00
|
|
|
td->qmat_chroma_scaled, 1);
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
/* decode V chroma plane */
|
2011-10-06 14:17:44 +00:00
|
|
|
decode_slice_plane(ctx, td, buf + hdr_size + y_data_size + u_data_size,
|
2011-09-21 11:09:32 +00:00
|
|
|
v_data_size,
|
|
|
|
(uint16_t*) (v_data + (mb_y_pos << 4) * v_linesize +
|
|
|
|
(mb_x_pos << ctx->mb_chroma_factor)),
|
|
|
|
v_linesize, mbs_per_slice, ctx->num_chroma_blocks,
|
|
|
|
slice_width_factor + ctx->chroma_factor - 1,
|
2012-02-28 18:03:09 +00:00
|
|
|
td->qmat_chroma_scaled, 1);
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int decode_picture(ProresContext *ctx, int pic_num,
|
|
|
|
AVCodecContext *avctx)
|
|
|
|
{
|
|
|
|
int slice_num, slice_width, x_pos, y_pos;
|
|
|
|
|
|
|
|
slice_num = 0;
|
|
|
|
|
2011-10-06 14:17:44 +00:00
|
|
|
ctx->pic_num = pic_num;
|
2011-09-21 11:09:32 +00:00
|
|
|
for (y_pos = 0; y_pos < ctx->num_y_mbs; y_pos++) {
|
|
|
|
slice_width = 1 << ctx->slice_width_factor;
|
|
|
|
|
|
|
|
for (x_pos = 0; x_pos < ctx->num_x_mbs && slice_width;
|
|
|
|
x_pos += slice_width) {
|
|
|
|
while (ctx->num_x_mbs - x_pos < slice_width)
|
|
|
|
slice_width >>= 1;
|
|
|
|
|
2011-10-06 14:17:44 +00:00
|
|
|
ctx->slice_data[slice_num].slice_num = slice_num;
|
|
|
|
ctx->slice_data[slice_num].x_pos = x_pos;
|
|
|
|
ctx->slice_data[slice_num].y_pos = y_pos;
|
|
|
|
ctx->slice_data[slice_num].slice_width = slice_width;
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
slice_num++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-12-11 23:36:05 +00:00
|
|
|
return avctx->execute(avctx, decode_slice,
|
2011-10-06 14:17:44 +00:00
|
|
|
ctx->slice_data, NULL, slice_num,
|
|
|
|
sizeof(ctx->slice_data[0]));
|
2011-09-21 11:09:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
#define MOVE_DATA_PTR(nbytes) buf += (nbytes); buf_size -= (nbytes)
|
|
|
|
|
2012-11-13 18:35:22 +00:00
|
|
|
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
|
2011-09-21 11:09:32 +00:00
|
|
|
AVPacket *avpkt)
|
|
|
|
{
|
|
|
|
ProresContext *ctx = avctx->priv_data;
|
|
|
|
const uint8_t *buf = avpkt->data;
|
|
|
|
int buf_size = avpkt->size;
|
|
|
|
int frame_hdr_size, pic_num, pic_data_size;
|
|
|
|
|
2012-11-21 20:34:46 +00:00
|
|
|
ctx->frame = data;
|
|
|
|
ctx->frame->pict_type = AV_PICTURE_TYPE_I;
|
|
|
|
ctx->frame->key_frame = 1;
|
|
|
|
|
2011-09-21 11:09:32 +00:00
|
|
|
/* check frame atom container */
|
|
|
|
if (buf_size < 28 || buf_size < AV_RB32(buf) ||
|
|
|
|
AV_RB32(buf + 4) != FRAME_ID) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "invalid frame\n");
|
2011-09-22 21:51:07 +00:00
|
|
|
return AVERROR_INVALIDDATA;
|
2011-09-21 11:09:32 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
MOVE_DATA_PTR(8);
|
|
|
|
|
|
|
|
frame_hdr_size = decode_frame_header(ctx, buf, buf_size, avctx);
|
|
|
|
if (frame_hdr_size < 0)
|
2011-09-22 21:51:07 +00:00
|
|
|
return AVERROR_INVALIDDATA;
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
MOVE_DATA_PTR(frame_hdr_size);
|
|
|
|
|
2012-11-21 20:34:46 +00:00
|
|
|
if (ff_get_buffer(avctx, ctx->frame, 0) < 0)
|
2011-09-21 11:09:32 +00:00
|
|
|
return -1;
|
|
|
|
|
2012-11-21 20:34:46 +00:00
|
|
|
for (pic_num = 0; ctx->frame->interlaced_frame - pic_num + 1; pic_num++) {
|
2011-09-21 11:09:32 +00:00
|
|
|
pic_data_size = decode_picture_header(ctx, buf, buf_size, avctx);
|
|
|
|
if (pic_data_size < 0)
|
2011-09-22 21:51:07 +00:00
|
|
|
return AVERROR_INVALIDDATA;
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
if (decode_picture(ctx, pic_num, avctx))
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
MOVE_DATA_PTR(pic_data_size);
|
|
|
|
}
|
|
|
|
|
2012-11-21 20:34:46 +00:00
|
|
|
ctx->frame = NULL;
|
|
|
|
*got_frame = 1;
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
return avpkt->size;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static av_cold int decode_close(AVCodecContext *avctx)
|
|
|
|
{
|
|
|
|
ProresContext *ctx = avctx->priv_data;
|
|
|
|
|
2011-10-06 14:17:44 +00:00
|
|
|
av_freep(&ctx->slice_data);
|
2011-09-21 11:09:32 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
AVCodec ff_prores_decoder = {
|
2011-09-22 21:51:04 +00:00
|
|
|
.name = "prores",
|
2011-09-21 11:09:32 +00:00
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
2012-08-05 09:11:04 +00:00
|
|
|
.id = AV_CODEC_ID_PRORES,
|
2011-09-21 11:09:32 +00:00
|
|
|
.priv_data_size = sizeof(ProresContext),
|
|
|
|
.init = decode_init,
|
|
|
|
.close = decode_close,
|
|
|
|
.decode = decode_frame,
|
2011-10-06 14:17:44 +00:00
|
|
|
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_SLICE_THREADS,
|
2011-09-21 11:09:32 +00:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("Apple ProRes (iCodec Pro)")
|
|
|
|
};
|