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557 lines
19 KiB
C
Executable File
557 lines
19 KiB
C
Executable File
/*
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* Photoshop (PSD) image decoder
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* Copyright (c) 2016 Jokyo Images
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "bytestream.h"
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#include "internal.h"
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enum PsdCompr {
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PSD_RAW,
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PSD_RLE,
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PSD_ZIP_WITHOUT_P,
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PSD_ZIP_WITH_P,
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};
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enum PsdColorMode {
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PSD_BITMAP,
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PSD_GRAYSCALE,
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PSD_INDEXED,
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PSD_RGB,
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PSD_CMYK,
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PSD_MULTICHANNEL,
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PSD_DUOTONE,
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PSD_LAB,
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};
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typedef struct PSDContext {
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AVClass *class;
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AVFrame *picture;
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AVCodecContext *avctx;
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GetByteContext gb;
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uint8_t * tmp;
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uint16_t channel_count;
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uint16_t channel_depth;
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uint64_t uncompressed_size;
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unsigned int pixel_size;/* 1 for 8 bits, 2 for 16 bits */
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uint64_t line_size;/* length of src data (even width) */
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int width;
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int height;
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enum PsdCompr compression;
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enum PsdColorMode color_mode;
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uint8_t palette[AVPALETTE_SIZE];
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} PSDContext;
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static int decode_header(PSDContext * s)
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{
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int signature, version, color_mode;
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int64_t len_section;
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int ret = 0;
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if (bytestream2_get_bytes_left(&s->gb) < 30) {/* File header section + color map data section length */
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av_log(s->avctx, AV_LOG_ERROR, "Header too short to parse.\n");
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return AVERROR_INVALIDDATA;
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}
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signature = bytestream2_get_le32(&s->gb);
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if (signature != MKTAG('8','B','P','S')) {
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av_log(s->avctx, AV_LOG_ERROR, "Wrong signature %d.\n", signature);
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return AVERROR_INVALIDDATA;
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}
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version = bytestream2_get_be16(&s->gb);
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if (version != 1) {
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av_log(s->avctx, AV_LOG_ERROR, "Wrong version %d.\n", version);
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return AVERROR_INVALIDDATA;
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}
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bytestream2_skip(&s->gb, 6);/* reserved */
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s->channel_count = bytestream2_get_be16(&s->gb);
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if ((s->channel_count < 1) || (s->channel_count > 56)) {
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av_log(s->avctx, AV_LOG_ERROR, "Invalid channel count %d.\n", s->channel_count);
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return AVERROR_INVALIDDATA;
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}
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s->height = bytestream2_get_be32(&s->gb);
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if ((s->height > 30000) && (s->avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL)) {
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av_log(s->avctx, AV_LOG_ERROR,
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"Height > 30000 is experimental, add "
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"'-strict %d' if you want to try to decode the picture.\n",
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FF_COMPLIANCE_EXPERIMENTAL);
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return AVERROR_EXPERIMENTAL;
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}
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s->width = bytestream2_get_be32(&s->gb);
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if ((s->width > 30000) && (s->avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL)) {
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av_log(s->avctx, AV_LOG_ERROR,
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"Width > 30000 is experimental, add "
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"'-strict %d' if you want to try to decode the picture.\n",
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FF_COMPLIANCE_EXPERIMENTAL);
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return AVERROR_EXPERIMENTAL;
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}
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if ((ret = ff_set_dimensions(s->avctx, s->width, s->height)) < 0)
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return ret;
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s->channel_depth = bytestream2_get_be16(&s->gb);
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color_mode = bytestream2_get_be16(&s->gb);
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switch (color_mode) {
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case 0:
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s->color_mode = PSD_BITMAP;
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break;
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case 1:
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s->color_mode = PSD_GRAYSCALE;
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break;
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case 2:
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s->color_mode = PSD_INDEXED;
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break;
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case 3:
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s->color_mode = PSD_RGB;
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break;
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case 4:
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s->color_mode = PSD_CMYK;
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break;
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case 7:
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s->color_mode = PSD_MULTICHANNEL;
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break;
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case 8:
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s->color_mode = PSD_DUOTONE;
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break;
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case 9:
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s->color_mode = PSD_LAB;
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break;
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default:
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av_log(s->avctx, AV_LOG_ERROR, "Unknown color mode %d.\n", color_mode);
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return AVERROR_INVALIDDATA;
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}
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/* color map data */
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len_section = bytestream2_get_be32(&s->gb);
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if (len_section < 0) {
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av_log(s->avctx, AV_LOG_ERROR, "Negative size for color map data section.\n");
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return AVERROR_INVALIDDATA;
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}
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if (bytestream2_get_bytes_left(&s->gb) < (len_section + 4)) { /* section and len next section */
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av_log(s->avctx, AV_LOG_ERROR, "Incomplete file.\n");
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return AVERROR_INVALIDDATA;
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}
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if (len_section) {
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int i,j;
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memset(s->palette, 0xff, AVPALETTE_SIZE);
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for (j = HAVE_BIGENDIAN; j < 3 + HAVE_BIGENDIAN; j++)
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for (i = 0; i < FFMIN(256, len_section / 3); i++)
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s->palette[i * 4 + (HAVE_BIGENDIAN ? j : 2 - j)] = bytestream2_get_byteu(&s->gb);
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len_section -= i * 3;
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}
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bytestream2_skip(&s->gb, len_section);
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/* image ressources */
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len_section = bytestream2_get_be32(&s->gb);
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if (len_section < 0) {
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av_log(s->avctx, AV_LOG_ERROR, "Negative size for image ressources section.\n");
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return AVERROR_INVALIDDATA;
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}
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if (bytestream2_get_bytes_left(&s->gb) < (len_section + 4)) { /* section and len next section */
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av_log(s->avctx, AV_LOG_ERROR, "Incomplete file.\n");
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return AVERROR_INVALIDDATA;
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}
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bytestream2_skip(&s->gb, len_section);
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/* layers and masks */
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len_section = bytestream2_get_be32(&s->gb);
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if (len_section < 0) {
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av_log(s->avctx, AV_LOG_ERROR, "Negative size for layers and masks data section.\n");
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return AVERROR_INVALIDDATA;
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}
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if (bytestream2_get_bytes_left(&s->gb) < len_section) {
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av_log(s->avctx, AV_LOG_ERROR, "Incomplete file.\n");
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return AVERROR_INVALIDDATA;
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}
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bytestream2_skip(&s->gb, len_section);
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/* image section */
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if (bytestream2_get_bytes_left(&s->gb) < 2) {
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av_log(s->avctx, AV_LOG_ERROR, "File without image data section.\n");
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return AVERROR_INVALIDDATA;
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}
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s->compression = bytestream2_get_be16(&s->gb);
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switch (s->compression) {
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case 0:
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case 1:
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break;
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case 2:
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avpriv_request_sample(s->avctx, "ZIP without predictor compression");
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return AVERROR_PATCHWELCOME;
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case 3:
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avpriv_request_sample(s->avctx, "ZIP with predictor compression");
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return AVERROR_PATCHWELCOME;
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default:
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av_log(s->avctx, AV_LOG_ERROR, "Unknown compression %d.\n", s->compression);
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return AVERROR_INVALIDDATA;
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}
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return ret;
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}
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static int decode_rle(PSDContext * s){
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unsigned int scanline_count;
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unsigned int sl, count;
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unsigned long target_index = 0;
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unsigned int p;
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int8_t rle_char;
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unsigned int repeat_count;
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uint8_t v;
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scanline_count = s->height * s->channel_count;
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/* scanline table */
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if (bytestream2_get_bytes_left(&s->gb) < scanline_count * 2) {
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av_log(s->avctx, AV_LOG_ERROR, "Not enough data for rle scanline table.\n");
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return AVERROR_INVALIDDATA;
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}
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bytestream2_skip(&s->gb, scanline_count * 2);/* size of each scanline */
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/* decode rle data scanline by scanline */
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for (sl = 0; sl < scanline_count; sl++) {
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count = 0;
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while (count < s->line_size) {
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rle_char = bytestream2_get_byte(&s->gb);
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if (rle_char <= 0) {/* byte repeat */
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repeat_count = rle_char * -1;
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if (bytestream2_get_bytes_left(&s->gb) < 1) {
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av_log(s->avctx, AV_LOG_ERROR, "Not enough data for rle scanline.\n");
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return AVERROR_INVALIDDATA;
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}
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if (target_index + repeat_count >= s->uncompressed_size) {
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av_log(s->avctx, AV_LOG_ERROR, "Invalid rle char.\n");
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return AVERROR_INVALIDDATA;
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}
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v = bytestream2_get_byte(&s->gb);
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for (p = 0; p <= repeat_count; p++) {
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s->tmp[target_index++] = v;
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}
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count += repeat_count + 1;
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} else {
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if (bytestream2_get_bytes_left(&s->gb) < rle_char) {
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av_log(s->avctx, AV_LOG_ERROR, "Not enough data for rle scanline.\n");
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return AVERROR_INVALIDDATA;
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}
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if (target_index + rle_char >= s->uncompressed_size) {
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av_log(s->avctx, AV_LOG_ERROR, "Invalid rle char.\n");
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return AVERROR_INVALIDDATA;
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}
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for (p = 0; p <= rle_char; p++) {
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v = bytestream2_get_byte(&s->gb);
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s->tmp[target_index++] = v;
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}
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count += rle_char + 1;
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}
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}
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}
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return 0;
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}
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static int decode_frame(AVCodecContext *avctx, void *data,
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int *got_frame, AVPacket *avpkt)
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{
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int ret;
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uint8_t *ptr;
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const uint8_t *ptr_data;
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int index_out, c, y, x, p;
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uint8_t eq_channel[4] = {2,0,1,3};/* RGBA -> GBRA channel order */
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uint8_t plane_number;
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AVFrame *picture = data;
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PSDContext *s = avctx->priv_data;
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s->avctx = avctx;
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s->channel_count = 0;
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s->channel_depth = 0;
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s->tmp = NULL;
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s->line_size = 0;
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bytestream2_init(&s->gb, avpkt->data, avpkt->size);
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if ((ret = decode_header(s)) < 0)
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return ret;
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s->pixel_size = s->channel_depth >> 3;/* in byte */
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s->line_size = s->width * s->pixel_size;
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switch (s->color_mode) {
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case PSD_BITMAP:
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if (s->channel_depth != 1 || s->channel_count != 1) {
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av_log(s->avctx, AV_LOG_ERROR,
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"Invalid bitmap file (channel_depth %d, channel_count %d)\n",
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s->channel_depth, s->channel_count);
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return AVERROR_INVALIDDATA;
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}
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s->line_size = s->width + 7 >> 3;
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avctx->pix_fmt = AV_PIX_FMT_MONOWHITE;
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break;
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case PSD_INDEXED:
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if (s->channel_depth != 8 || s->channel_count != 1) {
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av_log(s->avctx, AV_LOG_ERROR,
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"Invalid indexed file (channel_depth %d, channel_count %d)\n",
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s->channel_depth, s->channel_count);
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return AVERROR_INVALIDDATA;
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}
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avctx->pix_fmt = AV_PIX_FMT_PAL8;
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break;
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case PSD_CMYK:
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if (s->channel_count == 4) {
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if (s->channel_depth == 8) {
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avctx->pix_fmt = AV_PIX_FMT_GBRP;
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} else if (s->channel_depth == 16) {
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avctx->pix_fmt = AV_PIX_FMT_GBRP16BE;
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} else {
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avpriv_report_missing_feature(avctx, "channel depth %d for cmyk", s->channel_depth);
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return AVERROR_PATCHWELCOME;
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}
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} else if (s->channel_count == 5) {
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if (s->channel_depth == 8) {
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avctx->pix_fmt = AV_PIX_FMT_GBRAP;
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} else if (s->channel_depth == 16) {
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avctx->pix_fmt = AV_PIX_FMT_GBRAP16BE;
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} else {
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avpriv_report_missing_feature(avctx, "channel depth %d for cmyk", s->channel_depth);
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return AVERROR_PATCHWELCOME;
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}
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} else {
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avpriv_report_missing_feature(avctx, "channel count %d for cmyk", s->channel_count);
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return AVERROR_PATCHWELCOME;
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}
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break;
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case PSD_RGB:
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if (s->channel_count == 3) {
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if (s->channel_depth == 8) {
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avctx->pix_fmt = AV_PIX_FMT_GBRP;
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} else if (s->channel_depth == 16) {
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avctx->pix_fmt = AV_PIX_FMT_GBRP16BE;
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} else {
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avpriv_report_missing_feature(avctx, "channel depth %d for rgb", s->channel_depth);
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return AVERROR_PATCHWELCOME;
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}
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} else if (s->channel_count == 4) {
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if (s->channel_depth == 8) {
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avctx->pix_fmt = AV_PIX_FMT_GBRAP;
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} else if (s->channel_depth == 16) {
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avctx->pix_fmt = AV_PIX_FMT_GBRAP16BE;
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} else {
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avpriv_report_missing_feature(avctx, "channel depth %d for rgb", s->channel_depth);
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return AVERROR_PATCHWELCOME;
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}
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} else {
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avpriv_report_missing_feature(avctx, "channel count %d for rgb", s->channel_count);
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return AVERROR_PATCHWELCOME;
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}
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break;
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case PSD_DUOTONE:
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av_log(avctx, AV_LOG_WARNING, "ignoring unknown duotone specification.\n");
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case PSD_GRAYSCALE:
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if (s->channel_count == 1) {
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if (s->channel_depth == 8) {
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avctx->pix_fmt = AV_PIX_FMT_GRAY8;
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} else if (s->channel_depth == 16) {
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avctx->pix_fmt = AV_PIX_FMT_GRAY16BE;
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} else if (s->channel_depth == 32) {
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avctx->pix_fmt = AV_PIX_FMT_GRAYF32BE;
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} else {
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avpriv_report_missing_feature(avctx, "channel depth %d for grayscale", s->channel_depth);
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return AVERROR_PATCHWELCOME;
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}
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} else if (s->channel_count == 2) {
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if (s->channel_depth == 8) {
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avctx->pix_fmt = AV_PIX_FMT_YA8;
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} else if (s->channel_depth == 16) {
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avctx->pix_fmt = AV_PIX_FMT_YA16BE;
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} else {
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avpriv_report_missing_feature(avctx, "channel depth %d for grayscale", s->channel_depth);
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return AVERROR_PATCHWELCOME;
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}
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} else {
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avpriv_report_missing_feature(avctx, "channel count %d for grayscale", s->channel_count);
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return AVERROR_PATCHWELCOME;
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}
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break;
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default:
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avpriv_report_missing_feature(avctx, "color mode %d", s->color_mode);
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return AVERROR_PATCHWELCOME;
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}
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s->uncompressed_size = s->line_size * s->height * s->channel_count;
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if ((ret = ff_get_buffer(avctx, picture, 0)) < 0)
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return ret;
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/* decode picture if need */
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if (s->compression == PSD_RLE) {
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s->tmp = av_malloc(s->uncompressed_size);
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if (!s->tmp)
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return AVERROR(ENOMEM);
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ret = decode_rle(s);
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if (ret < 0) {
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av_freep(&s->tmp);
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return ret;
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}
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ptr_data = s->tmp;
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} else {
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if (bytestream2_get_bytes_left(&s->gb) < s->uncompressed_size) {
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av_log(s->avctx, AV_LOG_ERROR, "Not enough data for raw image data section.\n");
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return AVERROR_INVALIDDATA;
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}
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ptr_data = s->gb.buffer;
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}
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/* Store data */
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if ((avctx->pix_fmt == AV_PIX_FMT_YA8)||(avctx->pix_fmt == AV_PIX_FMT_YA16BE)){/* Interleaved */
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ptr = picture->data[0];
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for (c = 0; c < s->channel_count; c++) {
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for (y = 0; y < s->height; y++) {
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for (x = 0; x < s->width; x++) {
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index_out = y * picture->linesize[0] + x * s->channel_count * s->pixel_size + c * s->pixel_size;
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for (p = 0; p < s->pixel_size; p++) {
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ptr[index_out + p] = *ptr_data;
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ptr_data ++;
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}
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}
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}
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}
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} else if (s->color_mode == PSD_CMYK) {
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uint8_t *dst[4] = { picture->data[0], picture->data[1], picture->data[2], picture->data[3] };
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const uint8_t *src[5] = { ptr_data };
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src[1] = src[0] + s->line_size * s->height;
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src[2] = src[1] + s->line_size * s->height;
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src[3] = src[2] + s->line_size * s->height;
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src[4] = src[3] + s->line_size * s->height;
|
|
if (s->channel_depth == 8) {
|
|
for (y = 0; y < s->height; y++) {
|
|
for (x = 0; x < s->width; x++) {
|
|
int k = src[3][x];
|
|
int r = src[0][x] * k;
|
|
int g = src[1][x] * k;
|
|
int b = src[2][x] * k;
|
|
dst[0][x] = g * 257 >> 16;
|
|
dst[1][x] = b * 257 >> 16;
|
|
dst[2][x] = r * 257 >> 16;
|
|
}
|
|
dst[0] += picture->linesize[0];
|
|
dst[1] += picture->linesize[1];
|
|
dst[2] += picture->linesize[2];
|
|
src[0] += s->line_size;
|
|
src[1] += s->line_size;
|
|
src[2] += s->line_size;
|
|
src[3] += s->line_size;
|
|
}
|
|
if (avctx->pix_fmt == AV_PIX_FMT_GBRAP) {
|
|
for (y = 0; y < s->height; y++) {
|
|
memcpy(dst[3], src[4], s->line_size);
|
|
src[4] += s->line_size;
|
|
dst[3] += picture->linesize[3];
|
|
}
|
|
}
|
|
} else {
|
|
for (y = 0; y < s->height; y++) {
|
|
for (x = 0; x < s->width; x++) {
|
|
int64_t k = AV_RB16(&src[3][x * 2]);
|
|
int64_t r = AV_RB16(&src[0][x * 2]) * k;
|
|
int64_t g = AV_RB16(&src[1][x * 2]) * k;
|
|
int64_t b = AV_RB16(&src[2][x * 2]) * k;
|
|
AV_WB16(&dst[0][x * 2], g * 65537 >> 32);
|
|
AV_WB16(&dst[1][x * 2], b * 65537 >> 32);
|
|
AV_WB16(&dst[2][x * 2], r * 65537 >> 32);
|
|
}
|
|
dst[0] += picture->linesize[0];
|
|
dst[1] += picture->linesize[1];
|
|
dst[2] += picture->linesize[2];
|
|
src[0] += s->line_size;
|
|
src[1] += s->line_size;
|
|
src[2] += s->line_size;
|
|
src[3] += s->line_size;
|
|
}
|
|
if (avctx->pix_fmt == AV_PIX_FMT_GBRAP16BE) {
|
|
for (y = 0; y < s->height; y++) {
|
|
memcpy(dst[3], src[4], s->line_size);
|
|
src[4] += s->line_size;
|
|
dst[3] += picture->linesize[3];
|
|
}
|
|
}
|
|
}
|
|
} else {/* Planar */
|
|
if (s->channel_count == 1)/* gray 8 or gray 16be */
|
|
eq_channel[0] = 0;/* assign first channel, to first plane */
|
|
|
|
for (c = 0; c < s->channel_count; c++) {
|
|
plane_number = eq_channel[c];
|
|
ptr = picture->data[plane_number];/* get the right plane */
|
|
for (y = 0; y < s->height; y++) {
|
|
memcpy(ptr, ptr_data, s->line_size);
|
|
ptr += picture->linesize[plane_number];
|
|
ptr_data += s->line_size;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (s->color_mode == PSD_INDEXED) {
|
|
picture->palette_has_changed = 1;
|
|
memcpy(picture->data[1], s->palette, AVPALETTE_SIZE);
|
|
}
|
|
|
|
av_freep(&s->tmp);
|
|
|
|
picture->pict_type = AV_PICTURE_TYPE_I;
|
|
*got_frame = 1;
|
|
|
|
return avpkt->size;
|
|
}
|
|
|
|
AVCodec ff_psd_decoder = {
|
|
.name = "psd",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Photoshop PSD file"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_PSD,
|
|
.priv_data_size = sizeof(PSDContext),
|
|
.decode = decode_frame,
|
|
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
|
|
};
|