[FFmpeg-cvslog] avcodec: remove duplicate prores decoder
Paul B Mahol
git at videolan.org
Sat Apr 28 15:18:16 EEST 2018
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Thu Apr 26 15:01:05 2018 +0200| [5c6a3604f0592786db557c82de93112745597a2d] | committer: Paul B Mahol
avcodec: remove duplicate prores decoder
Removed slower one, couldn't figure out why it is slower.
Signed-off-by: Paul B Mahol <onemda at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5c6a3604f0592786db557c82de93112745597a2d
---
libavcodec/Makefile | 1 -
libavcodec/allcodecs.c | 1 -
libavcodec/proresdec_lgpl.c | 786 --------------------------------------------
3 files changed, 788 deletions(-)
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 4b8ad121db..d727b218dc 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -508,7 +508,6 @@ OBJS-$(CONFIG_PNG_ENCODER) += png.o pngenc.o
OBJS-$(CONFIG_PPM_DECODER) += pnmdec.o pnm.o
OBJS-$(CONFIG_PPM_ENCODER) += pnmenc.o
OBJS-$(CONFIG_PRORES_DECODER) += proresdec2.o proresdsp.o proresdata.o
-OBJS-$(CONFIG_PRORES_LGPL_DECODER) += proresdec_lgpl.o proresdsp.o proresdata.o
OBJS-$(CONFIG_PRORES_ENCODER) += proresenc_anatoliy.o
OBJS-$(CONFIG_PRORES_AW_ENCODER) += proresenc_anatoliy.o
OBJS-$(CONFIG_PRORES_KS_ENCODER) += proresenc_kostya.o proresdata.o
diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index 4d4ef530e4..102d99b7ea 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -234,7 +234,6 @@ extern AVCodec ff_prores_encoder;
extern AVCodec ff_prores_decoder;
extern AVCodec ff_prores_aw_encoder;
extern AVCodec ff_prores_ks_encoder;
-extern AVCodec ff_prores_lgpl_decoder;
extern AVCodec ff_psd_decoder;
extern AVCodec ff_ptx_decoder;
extern AVCodec ff_qdraw_decoder;
diff --git a/libavcodec/proresdec_lgpl.c b/libavcodec/proresdec_lgpl.c
deleted file mode 100644
index 3dbfb29011..0000000000
--- a/libavcodec/proresdec_lgpl.c
+++ /dev/null
@@ -1,786 +0,0 @@
-/*
- * Apple ProRes compatible decoder
- *
- * Copyright (c) 2010-2011 Maxim Poliakovski
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file
- * This is a decoder for Apple ProRes 422 SD/HQ/LT/Proxy and ProRes 4444.
- * It is used for storing and editing high definition video data in Apple's Final Cut Pro.
- *
- * @see http://wiki.multimedia.cx/index.php?title=Apple_ProRes
- */
-
-#define LONG_BITSTREAM_READER // some ProRes vlc codes require up to 28 bits to be read at once
-
-#include <stdint.h>
-
-#include "libavutil/intmath.h"
-#include "avcodec.h"
-#include "idctdsp.h"
-#include "internal.h"
-#include "proresdata.h"
-#include "proresdsp.h"
-#include "get_bits.h"
-
-typedef struct ProresThreadData {
- const uint8_t *index; ///< pointers to the data of this slice
- int slice_num;
- int x_pos, y_pos;
- int slice_width;
- int prev_slice_sf; ///< scalefactor of the previous decoded slice
- DECLARE_ALIGNED(16, int16_t, blocks)[8 * 4 * 64];
- DECLARE_ALIGNED(16, int16_t, qmat_luma_scaled)[64];
- DECLARE_ALIGNED(16, int16_t, qmat_chroma_scaled)[64];
-} ProresThreadData;
-
-typedef struct ProresContext {
- ProresDSPContext dsp;
- AVFrame *frame;
- ScanTable scantable;
- int scantable_type; ///< -1 = uninitialized, 0 = progressive, 1/2 = interlaced
-
- int frame_type; ///< 0 = progressive, 1 = top-field first, 2 = bottom-field first
- int pic_format; ///< 2 = 422, 3 = 444
- uint8_t qmat_luma[64]; ///< dequantization matrix for luma
- uint8_t qmat_chroma[64]; ///< dequantization matrix for chroma
- int qmat_changed; ///< 1 - global quantization matrices changed
- int total_slices; ///< total number of slices in a picture
- ProresThreadData *slice_data;
- int pic_num;
- int chroma_factor;
- int mb_chroma_factor;
- int num_chroma_blocks; ///< number of chrominance blocks in a macroblock
- int num_x_slices;
- int num_y_slices;
- int slice_width_factor;
- int slice_height_factor;
- int num_x_mbs;
- int num_y_mbs;
- int alpha_info;
-} ProresContext;
-
-
-static av_cold int decode_init(AVCodecContext *avctx)
-{
- ProresContext *ctx = avctx->priv_data;
-
- ctx->total_slices = 0;
- ctx->slice_data = NULL;
-
- avctx->bits_per_raw_sample = PRORES_BITS_PER_SAMPLE;
- ff_proresdsp_init(&ctx->dsp, avctx);
-
- ctx->scantable_type = -1; // set scantable type to uninitialized
- memset(ctx->qmat_luma, 4, 64);
- memset(ctx->qmat_chroma, 4, 64);
-
- return 0;
-}
-
-
-static int decode_frame_header(ProresContext *ctx, const uint8_t *buf,
- const int data_size, AVCodecContext *avctx)
-{
- int hdr_size, version, width, height, flags;
- const uint8_t *ptr;
-
- hdr_size = AV_RB16(buf);
- if (hdr_size > data_size) {
- av_log(avctx, AV_LOG_ERROR, "frame data too small\n");
- return AVERROR_INVALIDDATA;
- }
-
- version = AV_RB16(buf + 2);
- if (version >= 2) {
- av_log(avctx, AV_LOG_ERROR,
- "unsupported header version: %d\n", version);
- return AVERROR_INVALIDDATA;
- }
-
- width = AV_RB16(buf + 8);
- height = AV_RB16(buf + 10);
- if (width != avctx->width || height != avctx->height) {
- av_log(avctx, AV_LOG_ERROR,
- "picture dimension changed: old: %d x %d, new: %d x %d\n",
- avctx->width, avctx->height, width, height);
- return AVERROR_INVALIDDATA;
- }
-
- ctx->frame_type = (buf[12] >> 2) & 3;
- if (ctx->frame_type > 2) {
- av_log(avctx, AV_LOG_ERROR,
- "unsupported frame type: %d\n", ctx->frame_type);
- return AVERROR_INVALIDDATA;
- }
-
- ctx->chroma_factor = (buf[12] >> 6) & 3;
- ctx->mb_chroma_factor = ctx->chroma_factor + 2;
- ctx->num_chroma_blocks = (1 << ctx->chroma_factor) >> 1;
- ctx->alpha_info = buf[17] & 0xf;
-
- if (ctx->alpha_info > 2) {
- av_log(avctx, AV_LOG_ERROR, "Invalid alpha mode %d\n", ctx->alpha_info);
- return AVERROR_INVALIDDATA;
- }
- if (avctx->skip_alpha) ctx->alpha_info = 0;
-
- switch (ctx->chroma_factor) {
- case 2:
- avctx->pix_fmt = ctx->alpha_info ? AV_PIX_FMT_YUVA422P10
- : AV_PIX_FMT_YUV422P10;
- break;
- case 3:
- avctx->pix_fmt = ctx->alpha_info ? AV_PIX_FMT_YUVA444P10
- : AV_PIX_FMT_YUV444P10;
- break;
- default:
- av_log(avctx, AV_LOG_ERROR,
- "unsupported picture format: %d\n", ctx->pic_format);
- return AVERROR_INVALIDDATA;
- }
-
- if (ctx->scantable_type != ctx->frame_type) {
- if (!ctx->frame_type)
- ff_init_scantable(ctx->dsp.idct_permutation, &ctx->scantable,
- ff_prores_progressive_scan);
- else
- ff_init_scantable(ctx->dsp.idct_permutation, &ctx->scantable,
- ff_prores_interlaced_scan);
- ctx->scantable_type = ctx->frame_type;
- }
-
- if (ctx->frame_type) { /* if interlaced */
- ctx->frame->interlaced_frame = 1;
- ctx->frame->top_field_first = ctx->frame_type & 1;
- } else {
- ctx->frame->interlaced_frame = 0;
- }
-
- avctx->color_primaries = buf[14];
- avctx->color_trc = buf[15];
- avctx->colorspace = buf[16];
- avctx->color_range = AVCOL_RANGE_MPEG;
-
- ctx->qmat_changed = 0;
- ptr = buf + 20;
- flags = buf[19];
- if (flags & 2) {
- if (ptr - buf > hdr_size - 64) {
- av_log(avctx, AV_LOG_ERROR, "header data too small\n");
- return AVERROR_INVALIDDATA;
- }
- if (memcmp(ctx->qmat_luma, ptr, 64)) {
- memcpy(ctx->qmat_luma, ptr, 64);
- ctx->qmat_changed = 1;
- }
- ptr += 64;
- } else {
- memset(ctx->qmat_luma, 4, 64);
- ctx->qmat_changed = 1;
- }
-
- if (flags & 1) {
- if (ptr - buf > hdr_size - 64) {
- av_log(avctx, AV_LOG_ERROR, "header data too small\n");
- return -1;
- }
- if (memcmp(ctx->qmat_chroma, ptr, 64)) {
- memcpy(ctx->qmat_chroma, ptr, 64);
- ctx->qmat_changed = 1;
- }
- } else {
- memset(ctx->qmat_chroma, 4, 64);
- ctx->qmat_changed = 1;
- }
-
- return hdr_size;
-}
-
-
-static int decode_picture_header(ProresContext *ctx, const uint8_t *buf,
- const int data_size, AVCodecContext *avctx)
-{
- int i, hdr_size, pic_data_size, num_slices;
- int slice_width_factor, slice_height_factor;
- int remainder, num_x_slices;
- const uint8_t *data_ptr, *index_ptr;
-
- hdr_size = data_size > 0 ? buf[0] >> 3 : 0;
- if (hdr_size < 8 || hdr_size > data_size) {
- av_log(avctx, AV_LOG_ERROR, "picture header too small\n");
- return AVERROR_INVALIDDATA;
- }
-
- pic_data_size = AV_RB32(buf + 1);
- if (pic_data_size > data_size) {
- av_log(avctx, AV_LOG_ERROR, "picture data too small\n");
- return AVERROR_INVALIDDATA;
- }
-
- slice_width_factor = buf[7] >> 4;
- slice_height_factor = buf[7] & 0xF;
- if (slice_width_factor > 3 || slice_height_factor) {
- av_log(avctx, AV_LOG_ERROR,
- "unsupported slice dimension: %d x %d\n",
- 1 << slice_width_factor, 1 << slice_height_factor);
- return AVERROR_INVALIDDATA;
- }
-
- ctx->slice_width_factor = slice_width_factor;
- ctx->slice_height_factor = slice_height_factor;
-
- ctx->num_x_mbs = (avctx->width + 15) >> 4;
- ctx->num_y_mbs = (avctx->height +
- (1 << (4 + ctx->frame->interlaced_frame)) - 1) >>
- (4 + ctx->frame->interlaced_frame);
-
- remainder = av_mod_uintp2(ctx->num_x_mbs, slice_width_factor);
- num_x_slices = (ctx->num_x_mbs >> slice_width_factor) + (remainder & 1) +
- ((remainder >> 1) & 1) + ((remainder >> 2) & 1);
-
- num_slices = num_x_slices * ctx->num_y_mbs;
- if (num_slices != AV_RB16(buf + 5)) {
- av_log(avctx, AV_LOG_ERROR, "invalid number of slices\n");
- return AVERROR_INVALIDDATA;
- }
-
- if (ctx->total_slices != num_slices) {
- av_freep(&ctx->slice_data);
- ctx->slice_data = av_malloc_array(num_slices + 1, sizeof(ctx->slice_data[0]));
- if (!ctx->slice_data)
- return AVERROR(ENOMEM);
- ctx->total_slices = num_slices;
- }
-
- if (hdr_size + num_slices * 2 > data_size) {
- av_log(avctx, AV_LOG_ERROR, "slice table too small\n");
- return AVERROR_INVALIDDATA;
- }
-
- /* parse slice table allowing quick access to the slice data */
- index_ptr = buf + hdr_size;
- data_ptr = index_ptr + num_slices * 2;
-
- for (i = 0; i < num_slices; i++) {
- ctx->slice_data[i].index = data_ptr;
- ctx->slice_data[i].prev_slice_sf = 0;
- data_ptr += AV_RB16(index_ptr + i * 2);
- }
- ctx->slice_data[i].index = data_ptr;
- ctx->slice_data[i].prev_slice_sf = 0;
-
- if (data_ptr > buf + data_size) {
- av_log(avctx, AV_LOG_ERROR, "out of slice data\n");
- return -1;
- }
-
- return pic_data_size;
-}
-
-
-/**
- * Read an unsigned rice/exp golomb codeword.
- */
-static inline int decode_vlc_codeword(GetBitContext *gb, unsigned codebook)
-{
- 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;
- code = (log << rice_order) + NEG_USR32(buf << prefix_len, rice_order);
- 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.
- */
-static inline void decode_dc_coeffs(GetBitContext *gb, int16_t *out,
- int nblocks)
-{
- int16_t prev_dc;
- 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) {
- code = decode_vlc_codeword(gb, ff_prores_dc_codebook[FFMIN(FFABS(delta), 3)]);
-
- sign = -(((delta >> 15) & 1) ^ (code & 1));
- delta = (((code + 1) >> 1) ^ sign) - sign;
- prev_dc += delta;
- out[0] = prev_dc;
- }
-}
-
-#define MAX_PADDING 16
-
-/**
- * Decode AC coefficients for all blocks in a slice.
- */
-static inline int decode_ac_coeffs(GetBitContext *gb, int16_t *out,
- 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;) {
- run_cb_index = ff_prores_run_to_cb_index[FFMIN(run, 15)];
- lev_cb_index = ff_prores_lev_to_cb_index[FFMIN(level, 9)];
-
- bits_left = get_bits_left(gb);
- if (bits_left <= 0 || (bits_left <= MAX_PADDING && !show_bits(gb, bits_left)))
- return 0;
-
- run = decode_vlc_codeword(gb, ff_prores_ac_codebook[run_cb_index]);
- if (run < 0)
- return AVERROR_INVALIDDATA;
-
- bits_left = get_bits_left(gb);
- if (bits_left <= 0 || (bits_left <= MAX_PADDING && !show_bits(gb, bits_left)))
- return AVERROR_INVALIDDATA;
-
- level = decode_vlc_codeword(gb, ff_prores_ac_codebook[lev_cb_index]) + 1;
- if (level < 0)
- return AVERROR_INVALIDDATA;
-
- 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;
- }
-
- return 0;
-}
-
-
-/**
- * Decode a slice plane (luma or chroma).
- */
-static int decode_slice_plane(ProresContext *ctx, ProresThreadData *td,
- const uint8_t *buf,
- int data_size, uint16_t *out_ptr,
- int linesize, int mbs_per_slice,
- int blocks_per_mb, int plane_size_factor,
- const int16_t *qmat, int is_chroma)
-{
- GetBitContext gb;
- int16_t *block_ptr;
- int mb_num, blocks_per_slice, ret;
-
- blocks_per_slice = mbs_per_slice * blocks_per_mb;
-
- memset(td->blocks, 0, 8 * 4 * 64 * sizeof(*td->blocks));
-
- init_get_bits(&gb, buf, data_size << 3);
-
- decode_dc_coeffs(&gb, td->blocks, blocks_per_slice);
-
- ret = decode_ac_coeffs(&gb, td->blocks, blocks_per_slice,
- plane_size_factor, ctx->scantable.permutated);
- if (ret < 0)
- return ret;
-
- /* inverse quantization, inverse transform and output */
- block_ptr = td->blocks;
-
- 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);
- block_ptr += 64;
- 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;
- }
- }
- } 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);
- block_ptr += 64;
- 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;
- }
- }
- }
- return 0;
-}
-
-
-static void unpack_alpha(GetBitContext *gb, uint16_t *dst, int num_coeffs,
- const int num_bits)
-{
- const int mask = (1 << num_bits) - 1;
- int i, idx, val, alpha_val;
-
- idx = 0;
- alpha_val = mask;
- do {
- do {
- if (get_bits1(gb))
- val = get_bits(gb, num_bits);
- else {
- int sign;
- val = get_bits(gb, num_bits == 16 ? 7 : 4);
- sign = val & 1;
- val = (val + 2) >> 1;
- if (sign)
- val = -val;
- }
- alpha_val = (alpha_val + val) & mask;
- if (num_bits == 16)
- dst[idx++] = alpha_val >> 6;
- else
- dst[idx++] = (alpha_val << 2) | (alpha_val >> 6);
- if (idx >= num_coeffs) {
- break;
- }
- } while (get_bits1(gb));
- val = get_bits(gb, 4);
- if (!val)
- val = get_bits(gb, 11);
- if (idx + val > num_coeffs)
- val = num_coeffs - idx;
- if (num_bits == 16)
- for (i = 0; i < val; i++)
- dst[idx++] = alpha_val >> 6;
- else
- for (i = 0; i < val; i++)
- dst[idx++] = (alpha_val << 2) | (alpha_val >> 6);
- } while (idx < num_coeffs);
-}
-
-/**
- * Decode alpha slice plane.
- */
-static void decode_alpha_plane(ProresContext *ctx, ProresThreadData *td,
- const uint8_t *buf, int data_size,
- uint16_t *out_ptr, int linesize,
- int mbs_per_slice)
-{
- GetBitContext gb;
- int i;
- uint16_t *block_ptr;
-
- memset(td->blocks, 0, 8 * 4 * 64 * sizeof(*td->blocks));
-
- init_get_bits(&gb, buf, data_size << 3);
-
- if (ctx->alpha_info == 2)
- unpack_alpha(&gb, td->blocks, mbs_per_slice * 4 * 64, 16);
- else
- unpack_alpha(&gb, td->blocks, mbs_per_slice * 4 * 64, 8);
-
- block_ptr = td->blocks;
-
- for (i = 0; i < 16; i++) {
- memcpy(out_ptr, block_ptr, 16 * mbs_per_slice * sizeof(*out_ptr));
- out_ptr += linesize >> 1;
- block_ptr += 16 * mbs_per_slice;
- }
-}
-
-static int decode_slice(AVCodecContext *avctx, void *tdata)
-{
- ProresThreadData *td = tdata;
- 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;
- const uint8_t *buf;
- uint8_t *y_data, *u_data, *v_data, *a_data;
- AVFrame *pic = ctx->frame;
- int i, sf, slice_width_factor;
- int slice_data_size, hdr_size;
- int y_data_size, u_data_size, v_data_size, a_data_size;
- int y_linesize, u_linesize, v_linesize, a_linesize;
- int coff[4];
- int ret;
-
- buf = ctx->slice_data[slice_num].index;
- slice_data_size = ctx->slice_data[slice_num + 1].index - buf;
-
- slice_width_factor = av_log2(mbs_per_slice);
-
- y_data = pic->data[0];
- u_data = pic->data[1];
- v_data = pic->data[2];
- a_data = pic->data[3];
- y_linesize = pic->linesize[0];
- u_linesize = pic->linesize[1];
- v_linesize = pic->linesize[2];
- a_linesize = pic->linesize[3];
-
- if (pic->interlaced_frame) {
- if (!(pic_num ^ pic->top_field_first)) {
- y_data += y_linesize;
- u_data += u_linesize;
- v_data += v_linesize;
- if (a_data)
- a_data += a_linesize;
- }
- y_linesize <<= 1;
- u_linesize <<= 1;
- v_linesize <<= 1;
- a_linesize <<= 1;
- }
- y_data += (mb_y_pos << 4) * y_linesize + (mb_x_pos << 5);
- u_data += (mb_y_pos << 4) * u_linesize + (mb_x_pos << ctx->mb_chroma_factor);
- v_data += (mb_y_pos << 4) * v_linesize + (mb_x_pos << ctx->mb_chroma_factor);
- if (a_data)
- a_data += (mb_y_pos << 4) * a_linesize + (mb_x_pos << 5);
-
- if (slice_data_size < 6) {
- av_log(avctx, AV_LOG_ERROR, "slice data too small\n");
- return AVERROR_INVALIDDATA;
- }
-
- /* parse slice header */
- hdr_size = buf[0] >> 3;
- coff[0] = hdr_size;
- y_data_size = AV_RB16(buf + 2);
- coff[1] = coff[0] + y_data_size;
- u_data_size = AV_RB16(buf + 4);
- coff[2] = coff[1] + u_data_size;
- v_data_size = hdr_size > 7 ? AV_RB16(buf + 6) : slice_data_size - coff[2];
- coff[3] = coff[2] + v_data_size;
- a_data_size = ctx->alpha_info ? slice_data_size - coff[3] : 0;
-
- /* if V or alpha component size is negative that means that previous
- component sizes are too large */
- if (v_data_size < 0 || a_data_size < 0 || hdr_size < 6 || coff[3] > slice_data_size) {
- av_log(avctx, AV_LOG_ERROR, "invalid data size\n");
- return AVERROR_INVALIDDATA;
- }
-
- sf = av_clip(buf[1], 1, 224);
- sf = sf > 128 ? (sf - 96) << 2 : sf;
-
- /* scale quantization matrixes according with slice's scale factor */
- /* TODO: this can be SIMD-optimized a lot */
- if (ctx->qmat_changed || sf != td->prev_slice_sf) {
- td->prev_slice_sf = sf;
- for (i = 0; i < 64; i++) {
- 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;
- }
- }
-
- /* decode luma plane */
- ret = decode_slice_plane(ctx, td, buf + coff[0], y_data_size,
- (uint16_t*) y_data, y_linesize,
- mbs_per_slice, 4, slice_width_factor + 2,
- td->qmat_luma_scaled, 0);
-
- if (ret < 0)
- return ret;
-
- /* decode U chroma plane */
- ret = decode_slice_plane(ctx, td, buf + coff[1], u_data_size,
- (uint16_t*) u_data, u_linesize,
- mbs_per_slice, ctx->num_chroma_blocks,
- slice_width_factor + ctx->chroma_factor - 1,
- td->qmat_chroma_scaled, 1);
- if (ret < 0)
- return ret;
-
- /* decode V chroma plane */
- ret = decode_slice_plane(ctx, td, buf + coff[2], v_data_size,
- (uint16_t*) v_data, v_linesize,
- mbs_per_slice, ctx->num_chroma_blocks,
- slice_width_factor + ctx->chroma_factor - 1,
- td->qmat_chroma_scaled, 1);
- if (ret < 0)
- return ret;
-
- /* decode alpha plane if available */
- if (a_data && a_data_size)
- decode_alpha_plane(ctx, td, buf + coff[3], a_data_size,
- (uint16_t*) a_data, a_linesize,
- mbs_per_slice);
-
- 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;
-
- ctx->pic_num = pic_num;
- 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;
-
- 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;
-
- slice_num++;
- }
- }
-
- return avctx->execute(avctx, decode_slice,
- ctx->slice_data, NULL, slice_num,
- sizeof(ctx->slice_data[0]));
-}
-
-
-#define MOVE_DATA_PTR(nbytes) buf += (nbytes); buf_size -= (nbytes)
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
- 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;
- int ret;
-
- ctx->frame = data;
- ctx->frame->pict_type = AV_PICTURE_TYPE_I;
- ctx->frame->key_frame = 1;
-
- /* 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");
- return AVERROR_INVALIDDATA;
- }
-
- MOVE_DATA_PTR(8);
-
- frame_hdr_size = decode_frame_header(ctx, buf, buf_size, avctx);
- if (frame_hdr_size < 0)
- return AVERROR_INVALIDDATA;
-
- MOVE_DATA_PTR(frame_hdr_size);
-
- if ((ret = ff_get_buffer(avctx, ctx->frame, 0)) < 0)
- return ret;
-
- for (pic_num = 0; ctx->frame->interlaced_frame - pic_num + 1; pic_num++) {
- pic_data_size = decode_picture_header(ctx, buf, buf_size, avctx);
- if (pic_data_size < 0)
- return AVERROR_INVALIDDATA;
-
- if ((ret = decode_picture(ctx, pic_num, avctx)) < 0)
- return ret;
-
- MOVE_DATA_PTR(pic_data_size);
- }
-
- ctx->frame = NULL;
- *got_frame = 1;
-
- return avpkt->size;
-}
-
-
-static av_cold int decode_close(AVCodecContext *avctx)
-{
- ProresContext *ctx = avctx->priv_data;
-
- av_freep(&ctx->slice_data);
-
- return 0;
-}
-
-
-AVCodec ff_prores_lgpl_decoder = {
- .name = "prores_lgpl",
- .long_name = NULL_IF_CONFIG_SMALL("Apple ProRes (iCodec Pro)"),
- .type = AVMEDIA_TYPE_VIDEO,
- .id = AV_CODEC_ID_PRORES,
- .priv_data_size = sizeof(ProresContext),
- .init = decode_init,
- .close = decode_close,
- .decode = decode_frame,
- .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS,
-};
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