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https://github.com/FFmpeg/FFmpeg.git
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21b23ceab3
and remove FF_CODEC_CAP_INIT_THREADSAFE All our native codecs are already init-threadsafe (only wrappers for external libraries and hwaccels are typically not marked as init-threadsafe yet), so it is only natural for this to also be the default state. Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
186 lines
6.2 KiB
C
186 lines
6.2 KiB
C
/*
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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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} 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, GetByteContext *gb,
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int compression, uint8_t **outbuf)
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{
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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 gb0, *const gb = &gb0;
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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_le32u(gb) != VBN_MAGIC ||
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bytestream2_get_le32u(gb) != VBN_MAJOR ||
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bytestream2_get_le32u(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_le32u(gb);
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height = bytestream2_get_le32u(gb);
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components = bytestream2_get_le32u(gb);
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format = bytestream2_get_le32u(gb);
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pix_fmt = bytestream2_get_le32u(gb);
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bytestream2_get_le32u(gb); // mipmaps
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data_size = bytestream2_get_le32u(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, gb, 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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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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.priv_data_size = sizeof(VBNContext),
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.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS,
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};
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