mirror of https://github.com/FFmpeg/FFmpeg.git
Add support for decoding Vizrt Binary Image (VBN) files. LZW-compressed data is not supported yet. Signed-off-by: Marton Balint <cus@passwd.hu>release/5.1
Marton Balint
3 years ago
parent
a4570d7a66
commit
013d774e22
11 changed files with 271 additions and 0 deletions
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/*
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* VBN format definitions |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/**
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* @file |
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* VBN format definitions. |
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*/ |
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#ifndef AVCODEC_VBN_H |
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#define AVCODEC_VBN_H |
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#define VBN_MAGIC 0x900df11e |
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#define VBN_MAJOR 3 |
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#define VBN_MINOR 4 |
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#define VBN_HEADER_SIZE 192 |
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#define VBN_FORMAT_RAW 0 |
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#define VBN_FORMAT_LZ 1 |
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#define VBN_FORMAT_DXT1 2 |
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#define VBN_FORMAT_DXT5 3 |
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#define VBN_COMPRESSION_NONE 0 |
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#define VBN_COMPRESSION_LZW 0x100 |
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#define VBN_PIX_ALPHA 0 |
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#define VBN_PIX_LUMINANCE 1 |
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#define VBN_PIX_LUMINANCE_ALPHA 2 |
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#define VBN_PIX_RGB 3 |
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#define VBN_PIX_RGBA 5 |
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#define VBN_PIX_INDEX 6 |
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#endif /* AVCODEC_VBN_H */ |
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@ -0,0 +1,195 @@ |
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/*
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* Vizrt Binary Image decoder |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/**
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* @file |
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* Vizrt Binary Image decoder |
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*/ |
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#include "avcodec.h" |
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#include "bytestream.h" |
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#include "codec_internal.h" |
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#include "internal.h" |
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#include "texturedsp.h" |
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#include "vbn.h" |
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#include "libavutil/imgutils.h" |
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typedef struct VBNContext { |
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TextureDSPContext texdsp; |
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TextureDSPThreadContext dec; |
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GetByteContext gb; |
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} VBNContext; |
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static av_cold int vbn_init(AVCodecContext *avctx) |
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{ |
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VBNContext *ctx = avctx->priv_data; |
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ff_texturedsp_init(&ctx->texdsp); |
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return 0; |
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} |
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static int decompress(AVCodecContext *avctx, int compression, uint8_t **outbuf) |
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{ |
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VBNContext *ctx = avctx->priv_data; |
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GetByteContext *gb = &ctx->gb; |
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if (compression == VBN_COMPRESSION_NONE) // outbuf is left NULL because gb->buf can be used directly
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return bytestream2_get_bytes_left(gb); |
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av_log(avctx, AV_LOG_ERROR, "Unsupported VBN compression: 0x%08x\n", compression); |
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return AVERROR_PATCHWELCOME; |
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} |
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static int vbn_decode_frame(AVCodecContext *avctx, |
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AVFrame *frame, int *got_frame, |
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AVPacket *avpkt) |
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{ |
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VBNContext *ctx = avctx->priv_data; |
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GetByteContext *gb = &ctx->gb; |
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uint8_t *image_buf = NULL; |
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int image_len; |
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int width, height, components, format, compression, pix_fmt, linesize, data_size; |
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int ret; |
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bytestream2_init(gb, avpkt->data, avpkt->size); |
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if (bytestream2_get_bytes_left(gb) < VBN_HEADER_SIZE) { |
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av_log(avctx, AV_LOG_ERROR, "VBN header truncated\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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if (bytestream2_get_le32(gb) != VBN_MAGIC || |
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bytestream2_get_le32(gb) != VBN_MAJOR || |
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bytestream2_get_le32(gb) != VBN_MINOR) { |
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av_log(avctx, AV_LOG_ERROR, "Invalid VBN header\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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width = bytestream2_get_le32(gb); |
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height = bytestream2_get_le32(gb); |
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components = bytestream2_get_le32(gb); |
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format = bytestream2_get_le32(gb); |
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pix_fmt = bytestream2_get_le32(gb); |
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bytestream2_get_le32(gb); // mipmaps
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data_size = bytestream2_get_le32(gb); |
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bytestream2_seek(gb, VBN_HEADER_SIZE, SEEK_SET); |
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compression = format & 0xffffff00; |
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format = format & 0xff; |
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if (data_size != bytestream2_get_bytes_left(gb)) { |
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av_log(avctx, AV_LOG_ERROR, "Truncated packet\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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if (pix_fmt != VBN_PIX_RGBA && pix_fmt != VBN_PIX_RGB) { |
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av_log(avctx, AV_LOG_ERROR, "Unsupported pixel format: 0x%08x\n", pix_fmt); |
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return AVERROR_PATCHWELCOME; |
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} |
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ret = ff_set_dimensions(avctx, width, height); |
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if (ret < 0) |
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return ret; |
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if (format == VBN_FORMAT_RAW) { |
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if (pix_fmt == VBN_PIX_RGB && components == 3) { |
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avctx->pix_fmt = AV_PIX_FMT_RGB24; |
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linesize = avctx->width * 3; |
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} else if (pix_fmt == VBN_PIX_RGBA && components == 4) { |
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avctx->pix_fmt = AV_PIX_FMT_RGBA; |
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linesize = avctx->width * 4; |
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} else { |
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av_log(avctx, AV_LOG_ERROR, "Unsupported number of components: %d\n", components); |
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return AVERROR_PATCHWELCOME; |
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} |
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} else if (format == VBN_FORMAT_DXT1 || format == VBN_FORMAT_DXT5) { |
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if (avctx->width % TEXTURE_BLOCK_W || avctx->height % TEXTURE_BLOCK_H) { |
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av_log(avctx, AV_LOG_ERROR, "DXTx compression only supports 4 pixel aligned resolutions\n"); |
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return AVERROR_INVALIDDATA; |
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} |
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avctx->pix_fmt = AV_PIX_FMT_RGBA; |
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if (format == VBN_FORMAT_DXT1) { |
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ctx->dec.tex_funct = ctx->texdsp.dxt1_block; |
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ctx->dec.tex_ratio = 8; |
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linesize = avctx->coded_width / 2; |
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} else { |
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ctx->dec.tex_funct = ctx->texdsp.dxt5_block; |
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ctx->dec.tex_ratio = 16; |
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linesize = avctx->coded_width; |
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} |
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} else { |
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av_log(avctx, AV_LOG_ERROR, "Unsupported VBN format: 0x%02x\n", format); |
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return AVERROR_PATCHWELCOME; |
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} |
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image_len = decompress(avctx, compression, &image_buf); |
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if (image_len < 0) |
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return image_len; |
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if (image_len < linesize * avctx->coded_height) { |
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av_log(avctx, AV_LOG_ERROR, "Insufficent data\n"); |
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ret = AVERROR_INVALIDDATA; |
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goto out; |
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} |
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ret = ff_get_buffer(avctx, frame, 0); |
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if (ret < 0) |
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goto out; |
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frame->pict_type = AV_PICTURE_TYPE_I; |
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frame->key_frame = 1; |
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if (format == VBN_FORMAT_RAW) { |
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uint8_t *flipped = frame->data[0] + frame->linesize[0] * (frame->height - 1); |
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av_image_copy_plane(flipped, -frame->linesize[0], image_buf ? image_buf : gb->buffer, linesize, linesize, frame->height); |
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} else { |
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ctx->dec.slice_count = av_clip(avctx->thread_count, 1, avctx->coded_height / TEXTURE_BLOCK_H); |
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ctx->dec.tex_data.in = image_buf ? image_buf : gb->buffer; |
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ctx->dec.raw_ratio = 16; |
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ctx->dec.frame_data.out = frame->data[0] + frame->linesize[0] * (frame->height - 1); |
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ctx->dec.stride = -frame->linesize[0]; |
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avctx->execute2(avctx, ff_texturedsp_decompress_thread, &ctx->dec, NULL, ctx->dec.slice_count); |
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} |
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*got_frame = 1; |
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ret = avpkt->size; |
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out: |
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av_freep(&image_buf); |
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return ret; |
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} |
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static av_cold int vbn_close(AVCodecContext *avctx) |
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{ |
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return 0; |
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} |
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const FFCodec ff_vbn_decoder = { |
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.p.name = "vbn", |
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.p.long_name = NULL_IF_CONFIG_SMALL("Vizrt Binary Image"), |
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.p.type = AVMEDIA_TYPE_VIDEO, |
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.p.id = AV_CODEC_ID_VBN, |
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.init = vbn_init, |
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FF_CODEC_DECODE_CB(vbn_decode_frame), |
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.close = vbn_close, |
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.priv_data_size = sizeof(VBNContext), |
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.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS, |
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.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
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}; |
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