From c19f74e5c6456056635252abad80f83bff51292c Mon Sep 17 00:00:00 2001
From: Martin Vignali <martin.vignali@gmail.com>
Date: Thu, 4 Aug 2016 16:58:30 +0200
Subject: [PATCH 2/2] libavcodec : add decoder for Photoshop PSD image file.
Decode the Image Data Section (who contain merge picture).
Support RGB/A and Grayscale/A in 8bits and 16 bits by channel.
Support uncompress and rle compression in Image Data Section.
---
Changelog | 1 +
doc/general.texi | 2 +
libavcodec/Makefile | 1 +
libavcodec/allcodecs.c | 1 +
libavcodec/avcodec.h | 1 +
libavcodec/psd.c | 402 +++++++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 408 insertions(+)
create mode 100644 libavcodec/psd.c
@@ -12,6 +12,7 @@ version <next>:
- 16-bit support in selectivecolor filter
- OpenH264 decoder wrapper
- MediaCodec hwaccel
+- PSD Decoder
version 3.1:
@@ -584,6 +584,8 @@ following image formats are supported:
@item PNG @tab X @tab X
@item PPM @tab X @tab X
@tab Portable PixelMap image
+@item PSD @tab @tab X
+ @tab Photoshop
@item PTX @tab @tab X
@tab V.Flash PTX format
@item SGI @tab X @tab X
@@ -459,6 +459,7 @@ OBJS-$(CONFIG_PRORES_LGPL_DECODER) += proresdec_lgpl.o proresdsp.o proresdat
OBJS-$(CONFIG_PRORES_ENCODER) += proresenc_anatoliy.o
OBJS-$(CONFIG_PRORES_AW_ENCODER) += proresenc_anatoliy.o
OBJS-$(CONFIG_PRORES_KS_ENCODER) += proresenc_kostya.o proresdata.o
+OBJS-$(CONFIG_PSD_DECODER) += psd.o
OBJS-$(CONFIG_PTX_DECODER) += ptx.o
OBJS-$(CONFIG_QCELP_DECODER) += qcelpdec.o \
celp_filters.o acelp_vectors.o \
@@ -279,6 +279,7 @@ void avcodec_register_all(void)
REGISTER_ENCODER(PRORES_AW, prores_aw);
REGISTER_ENCODER(PRORES_KS, prores_ks);
REGISTER_DECODER(PRORES_LGPL, prores_lgpl);
+ REGISTER_DECODER(PSD, psd);
REGISTER_DECODER(PTX, ptx);
REGISTER_DECODER(QDRAW, qdraw);
REGISTER_DECODER(QPEG, qpeg);
@@ -411,6 +411,7 @@ enum AVCodecID {
AV_CODEC_ID_MAGICYUV,
AV_CODEC_ID_SHEERVIDEO,
AV_CODEC_ID_YLC,
+ AV_CODEC_ID_PSD,
/* various PCM "codecs" */
AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs
new file mode 100644
@@ -0,0 +1,402 @@
+/*
+ * Photoshop (PSD) image decoder
+ * Copyright (c) 2016 Jokyo Images
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "bytestream.h"
+#include "internal.h"
+
+enum PsdCompr {
+ PSD_RAW,
+ PSD_RLE,
+ PSD_ZIP_WITHOUT_P,
+ PSD_ZIP_WITH_P,
+};
+
+enum PsdColorMode {
+ PSD_BITMAP,
+ PSD_GRAYSCALE,
+ PSD_INDEXED,
+ PSD_RGB,
+ PSD_CMYK,
+ PSD_MULTICHANNEL,
+ PSD_DUOTONE,
+ PSD_LAB,
+};
+
+typedef struct PSDContext {
+ AVClass *class;
+ AVFrame *picture;
+ AVCodecContext *avctx;
+ GetByteContext gb;
+
+ uint8_t * tmp;
+
+ uint16_t channel_count;
+ uint16_t channel_depth;
+
+ unsigned long uncompressed_size;
+ unsigned int pixel_size;/* 1 for 8 bits, 2 for 16 bits */
+ unsigned int line_size;/* length of src data (even width) */
+
+ int width;
+ int height;
+
+ enum PsdCompr compression;
+ enum PsdColorMode color_mode;
+} PSDContext;
+
+static int decode_header(PSDContext * s)
+{
+ int signature, version, color_mode, len_section, compression;
+ int ret = 0;
+
+ if (bytestream2_get_bytes_left(&s->gb) < 30) {/* File header section + color map data section length */
+ av_log(s->avctx, AV_LOG_ERROR, "Header too short to parse.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ signature = bytestream2_get_le32(&s->gb);
+ if (signature != MKTAG('8','B','P','S')) {
+ av_log(s->avctx, AV_LOG_ERROR, "Wrong signature %d.\n", signature);
+ return AVERROR_INVALIDDATA;
+ }
+
+ version = bytestream2_get_be16(&s->gb);
+ if (version != 1) {
+ av_log(s->avctx, AV_LOG_ERROR, "Wrong version %d.\n", version);
+ return AVERROR_INVALIDDATA;
+ }
+
+ bytestream2_skip(&s->gb, 6);/* reserved */
+
+ s->channel_count = bytestream2_get_be16(&s->gb);
+ if ((s->channel_count < 1) || (s->channel_count > 56)) {
+ av_log(s->avctx, AV_LOG_ERROR, "Invalid channel count %d.\n", s->channel_count);
+ return AVERROR_INVALIDDATA;
+ }
+
+ s->height = bytestream2_get_be32(&s->gb);
+
+ if ((s->height < 1) || (s->height > 30000)) {
+ av_log(s->avctx, AV_LOG_ERROR, "Invalid height %d.\n", s->height);
+ return AVERROR_INVALIDDATA;
+ }
+
+ s->width = bytestream2_get_be32(&s->gb);
+ if ((s->width < 1) || (s->width > 30000)) {
+ av_log(s->avctx, AV_LOG_ERROR, "Invalid width %d.\n", s->width);
+ return AVERROR_INVALIDDATA;
+ }
+
+ if ((ret = ff_set_dimensions(s->avctx, s->width, s->height)) < 0)
+ return ret;
+
+ s->channel_depth = bytestream2_get_be16(&s->gb);
+
+ color_mode = bytestream2_get_be16(&s->gb);
+ switch (color_mode) {
+ case 0:
+ s->color_mode = PSD_BITMAP;
+ break;
+ case 1:
+ s->color_mode = PSD_GRAYSCALE;
+ break;
+ case 2:
+ s->color_mode = PSD_INDEXED;
+ break;
+ case 3:
+ s->color_mode = PSD_RGB;
+ break;
+ case 4:
+ s->color_mode = PSD_CMYK;
+ break;
+ case 7:
+ s->color_mode = PSD_MULTICHANNEL;
+ break;
+ case 8:
+ s->color_mode = PSD_DUOTONE;
+ break;
+ case 9:
+ s->color_mode = PSD_LAB;
+ break;
+ default:
+ av_log(s->avctx, AV_LOG_ERROR, "Unknown color mode %d.\n", color_mode);
+ return AVERROR_INVALIDDATA;
+ }
+
+ /* color map data */
+ len_section = bytestream2_get_be32(&s->gb);
+ if (bytestream2_get_bytes_left(&s->gb) < (len_section + 4)) { /* section and len next section */
+ av_log(s->avctx, AV_LOG_ERROR, "Incomplete file.\n");
+ return AVERROR_INVALIDDATA;
+ }
+ bytestream2_skip(&s->gb, len_section);
+
+ /* image ressources */
+ len_section = bytestream2_get_be32(&s->gb);
+ if (bytestream2_get_bytes_left(&s->gb) < (len_section + 4)) { /* section and len next section */
+ av_log(s->avctx, AV_LOG_ERROR, "Incomplete file.\n");
+ return AVERROR_INVALIDDATA;
+ }
+ bytestream2_skip(&s->gb, len_section);
+
+ /* layers and masks */
+ len_section = bytestream2_get_be32(&s->gb);
+ if (bytestream2_get_bytes_left(&s->gb) < len_section) {
+ av_log(s->avctx, AV_LOG_ERROR, "Incomplete file.\n");
+ return AVERROR_INVALIDDATA;
+ }
+ bytestream2_skip(&s->gb, len_section);
+
+ /* image section */
+ if (bytestream2_get_bytes_left(&s->gb) < 2) {
+ av_log(s->avctx, AV_LOG_ERROR, "File without image data section.\n");
+ return AVERROR_INVALIDDATA;
+ }
+ compression = bytestream2_get_be16(&s->gb);
+
+ switch (compression) {
+ case 0:
+ s->compression = PSD_RAW;
+ break;
+ case 1:
+ s->compression = PSD_RLE;
+ break;
+ case 2:
+ s->compression = PSD_ZIP_WITHOUT_P;
+ avpriv_request_sample(s->avctx, "ZIP without predictor compression");
+ return AVERROR_PATCHWELCOME;
+ break;
+ case 3:
+ s->compression = PSD_ZIP_WITH_P;
+ avpriv_request_sample(s->avctx, "ZIP with predictor compression");
+ return AVERROR_PATCHWELCOME;
+ break;
+ default:
+ av_log(s->avctx, AV_LOG_ERROR, "Unknown compression %d.\n", compression);
+ return AVERROR_INVALIDDATA;
+ }
+
+ return ret;
+}
+
+static int decode_rle(PSDContext * s){
+ unsigned int scanline_count;
+ unsigned int sl, count;
+ unsigned long target_index = 0;
+ unsigned int p;
+ int8_t rle_char;
+ unsigned int repeat_count;
+ uint8_t v;
+
+ scanline_count = s->height * s->channel_count;
+
+ /* scanline table */
+ if (bytestream2_get_bytes_left(&s->gb) < scanline_count * 2) {
+ av_log(s->avctx, AV_LOG_ERROR, "Not enough data for rle scanline table.\n");
+ return AVERROR_INVALIDDATA;
+ }
+ bytestream2_skip(&s->gb, scanline_count * 2);/* size of each scanline */
+
+ /* decode rle data scanline by scanline */
+ for (sl = 0; sl < scanline_count; sl++) {
+ count = 0;
+
+ while (count < s->line_size) {
+ rle_char = bytestream2_get_byte(&s->gb);
+
+ if (rle_char <= 0) {/* byte repeat */
+ repeat_count = rle_char * -1;
+
+ if (bytestream2_get_bytes_left(&s->gb) < 1) {
+ av_log(s->avctx, AV_LOG_ERROR, "Not enough data for rle scanline.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (target_index + repeat_count >= s->uncompressed_size) {
+ av_log(s->avctx, AV_LOG_ERROR, "Invalid rle char.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ v = bytestream2_get_byte(&s->gb);
+ for (p = 0; p <= repeat_count; p++) {
+ s->tmp[target_index++] = v;
+ }
+ count += repeat_count + 1;
+ } else {
+ if (bytestream2_get_bytes_left(&s->gb) < rle_char) {
+ av_log(s->avctx, AV_LOG_ERROR, "Not enough data for rle scanline.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (target_index + rle_char >= s->uncompressed_size) {
+ av_log(s->avctx, AV_LOG_ERROR, "Invalid rle char.\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ for (p = 0; p <= rle_char; p++) {
+ v = bytestream2_get_byte(&s->gb);
+ s->tmp[target_index++] = v;
+ }
+ count += rle_char + 1;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static int decode_frame(AVCodecContext *avctx, void *data,
+ int *got_frame, AVPacket *avpkt)
+{
+ int ret;
+ uint8_t *ptr;
+ const uint8_t * ptr_data;
+ int index_out, c, y, x, p;
+
+ AVFrame *picture = data;
+
+ PSDContext *s = avctx->priv_data;
+ s->avctx = avctx;
+ s->channel_count = 0;
+ s->channel_depth = 0;
+ s->tmp = NULL;
+ s->line_size = 0;
+
+ bytestream2_init(&s->gb, avpkt->data, avpkt->size);
+
+ if ((ret = decode_header(s)) < 0)
+ return ret;
+
+ s->pixel_size = s->channel_depth >> 3;/* in byte */
+ s->line_size = s->width * s->pixel_size;
+ s->uncompressed_size = s->line_size * s->height * s->channel_count;
+
+ switch (s->color_mode) {
+ case PSD_RGB:
+ if (s->channel_count == 3) {
+ if (s->channel_depth == 8) {
+ avctx->pix_fmt = AV_PIX_FMT_RGB24;
+ } else if (s->channel_depth == 16) {
+ avctx->pix_fmt = AV_PIX_FMT_RGB48BE;
+ } else {
+ avpriv_report_missing_feature(avctx, "channel depth %d unsupported for rgb", s->channel_depth);
+ return AVERROR_PATCHWELCOME;
+ }
+ } else if (s->channel_count == 4) {
+ if (s->channel_depth == 8) {
+ avctx->pix_fmt = AV_PIX_FMT_RGBA;
+ } else if (s->channel_depth == 16) {
+ avctx->pix_fmt = AV_PIX_FMT_RGBA64BE;
+ } else {
+ avpriv_report_missing_feature(avctx, "channel depth %d unsupported for rgb", s->channel_depth);
+ return AVERROR_PATCHWELCOME;
+ }
+ } else {
+ avpriv_report_missing_feature(avctx, "channel count %d unsupported for rgb", s->channel_count);
+ return AVERROR_PATCHWELCOME;
+ }
+ break;
+ case PSD_GRAYSCALE:
+ if (s->channel_count == 1) {
+ if (s->channel_depth == 8) {
+ avctx->pix_fmt = AV_PIX_FMT_GRAY8;
+ } else if (s->channel_depth == 16) {
+ avctx->pix_fmt = AV_PIX_FMT_GRAY16BE;
+ } else {
+ avpriv_report_missing_feature(avctx, "channel depth %d unsupported for grayscale", s->channel_depth);
+ return AVERROR_PATCHWELCOME;
+ }
+ } else if (s->channel_count == 2) {
+ if (s->channel_depth == 8) {
+ avctx->pix_fmt = AV_PIX_FMT_YA8;
+ } else if (s->channel_depth == 16) {
+ avctx->pix_fmt = AV_PIX_FMT_YA16BE;
+ } else {
+ avpriv_report_missing_feature(avctx, "channel depth %d unsupported for grayscale", s->channel_depth);
+ return AVERROR_PATCHWELCOME;
+ }
+ } else {
+ avpriv_report_missing_feature(avctx, "channel count %d unsupported for grayscale", s->channel_count);
+ return AVERROR_PATCHWELCOME;
+ }
+ break;
+ default:
+ avpriv_report_missing_feature(avctx, "color mode %d unsupported", s->color_mode);
+ return AVERROR_PATCHWELCOME;
+ }
+
+ if ((ret = ff_get_buffer(avctx, picture, 0)) < 0)
+ return ret;
+
+ /* decode picture if need */
+ if (s->compression == PSD_RLE) {
+ s->tmp = av_malloc(s->uncompressed_size);
+ if (!s->tmp)
+ return AVERROR(ENOMEM);
+
+ ret = decode_rle(s);
+
+ if (ret < 0) {
+ av_freep(&s->tmp);
+ return ret;
+ }
+
+ ptr_data = s->tmp;
+ } else {
+ if (bytestream2_get_bytes_left(&s->gb) < s->uncompressed_size) {
+ av_log(s->avctx, AV_LOG_ERROR, "Not enough data for raw image data section.\n");
+ return AVERROR_INVALIDDATA;
+ }
+ ptr_data = s->gb.buffer;
+ }
+
+ /* reorganize uncompress data. Each channel is stored one after the other */
+ ptr = picture->data[0];
+
+ for (c = 0; c < s->channel_count; c++) {
+ for (y = 0; y < s->height; y++) {
+ for (x = 0; x < s->width; x++) {
+ index_out = y * picture->linesize[0] + x * s->channel_count * s->pixel_size + c * s->pixel_size;
+ for (p = 0; p < s->pixel_size; p++) {
+ ptr[index_out + p] = *ptr_data;
+ ptr_data ++;
+ }
+ }
+ }
+ }
+
+ 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,
+};
--
1.9.3 (Apple Git-50)