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165 lines
6.0 KiB
165 lines
6.0 KiB
/* |
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* Vizrt Binary Image encoder |
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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 encoder |
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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 "encode.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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#include "libavutil/frame.h" |
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#include "libavutil/opt.h" |
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typedef struct VBNContext { |
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AVClass *class; |
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TextureDSPContext dxtc; |
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int format; |
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TextureDSPThreadContext enc; |
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} VBNContext; |
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static int vbn_encode(AVCodecContext *avctx, AVPacket *pkt, |
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const AVFrame *frame, int *got_packet) |
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{ |
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VBNContext *ctx = avctx->priv_data; |
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PutByteContext pb0, *const pb = &pb0; |
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int ret; |
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ptrdiff_t linesize; |
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int64_t pkt_size; |
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ret = av_image_check_size2(frame->width, frame->height, INT_MAX, frame->format, 0, avctx); |
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if (ret < 0) |
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return ret; |
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if (ctx->format == VBN_FORMAT_DXT1 || ctx->format == VBN_FORMAT_DXT5) { |
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if (frame->width % TEXTURE_BLOCK_W || frame->height % TEXTURE_BLOCK_H) { |
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av_log(avctx, AV_LOG_ERROR, "Video size %dx%d is not multiple of 4\n", frame->width, frame->height); |
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return AVERROR(EINVAL); |
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} |
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if (frame->format != AV_PIX_FMT_RGBA) { |
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av_log(avctx, AV_LOG_ERROR, "DXT formats only support RGBA pixel format\n"); |
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return AVERROR(EINVAL); |
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} |
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ctx->enc.raw_ratio = 16; |
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ctx->enc.slice_count = av_clip(avctx->thread_count, 1, avctx->height / TEXTURE_BLOCK_H); |
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} |
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switch (ctx->format) { |
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case VBN_FORMAT_DXT1: |
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linesize = frame->width / 2; |
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ctx->enc.tex_funct = ctx->dxtc.dxt1_block; |
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ctx->enc.tex_ratio = 8; |
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break; |
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case VBN_FORMAT_DXT5: |
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linesize = frame->width; |
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ctx->enc.tex_funct = ctx->dxtc.dxt5_block; |
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ctx->enc.tex_ratio = 16; |
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break; |
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case VBN_FORMAT_RAW: |
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linesize = av_image_get_linesize(frame->format, frame->width, 0); |
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if (linesize < 0) |
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return linesize; |
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break; |
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default: |
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av_log(avctx, AV_LOG_ERROR, "Invalid format %02X\n", ctx->format); |
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return AVERROR(EINVAL); |
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} |
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pkt_size = VBN_HEADER_SIZE + linesize * frame->height; |
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if (pkt_size > INT_MAX) |
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return AVERROR(EINVAL); |
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if ((ret = ff_get_encode_buffer(avctx, pkt, pkt_size, 0)) < 0) |
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return ret; |
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memset(pkt->data, 0, VBN_HEADER_SIZE); |
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bytestream2_init_writer(pb, pkt->data, pkt_size); |
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bytestream2_put_le32u(pb, VBN_MAGIC); |
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bytestream2_put_le32u(pb, VBN_MAJOR); |
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bytestream2_put_le32u(pb, VBN_MINOR); |
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bytestream2_put_le32u(pb, frame->width); |
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bytestream2_put_le32u(pb, frame->height); |
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bytestream2_put_le32u(pb, frame->format == AV_PIX_FMT_RGBA ? 4 : 3); |
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bytestream2_put_le32u(pb, ctx->format); |
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bytestream2_put_le32u(pb, frame->format == AV_PIX_FMT_RGBA ? VBN_PIX_RGBA : VBN_PIX_RGB); |
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bytestream2_put_le32u(pb, 0); // mipmaps |
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bytestream2_put_le32u(pb, pkt_size - VBN_HEADER_SIZE); |
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bytestream2_seek_p(pb, 64, SEEK_SET); |
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bytestream2_put_le32u(pb, pkt_size - VBN_HEADER_SIZE); |
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if (ctx->format == VBN_FORMAT_DXT1 || ctx->format == VBN_FORMAT_DXT5) { |
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ctx->enc.frame_data.in = (frame->height - 1) * frame->linesize[0] + frame->data[0]; |
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ctx->enc.stride = -frame->linesize[0]; |
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ctx->enc.tex_data.out = pkt->data + VBN_HEADER_SIZE; |
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avctx->execute2(avctx, ff_texturedsp_compress_thread, &ctx->enc, NULL, ctx->enc.slice_count); |
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} else { |
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const uint8_t *flipped = frame->data[0] + frame->linesize[0] * (frame->height - 1); |
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av_image_copy_plane(pkt->data + VBN_HEADER_SIZE, linesize, flipped, -frame->linesize[0], linesize, frame->height); |
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} |
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*got_packet = 1; |
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return 0; |
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} |
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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_texturedspenc_init(&ctx->dxtc); |
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return 0; |
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} |
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#define OFFSET(x) offsetof(VBNContext, x) |
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#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM |
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static const AVOption options[] = { |
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{ "format", "Texture format", OFFSET(format), AV_OPT_TYPE_INT, { .i64 = VBN_FORMAT_DXT5 }, VBN_FORMAT_RAW, VBN_FORMAT_DXT5, FLAGS, "format" }, |
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{ "raw", "RAW texture", 0, AV_OPT_TYPE_CONST, { .i64 = VBN_FORMAT_RAW }, 0, 0, FLAGS, "format" }, |
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{ "dxt1", "DXT1 texture", 0, AV_OPT_TYPE_CONST, { .i64 = VBN_FORMAT_DXT1 }, 0, 0, FLAGS, "format" }, |
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{ "dxt5", "DXT5 texture", 0, AV_OPT_TYPE_CONST, { .i64 = VBN_FORMAT_DXT5 }, 0, 0, FLAGS, "format" }, |
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{ NULL }, |
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}; |
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static const AVClass vbnenc_class = { |
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.class_name = "VBN encoder", |
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.item_name = av_default_item_name, |
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.option = options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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const FFCodec ff_vbn_encoder = { |
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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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.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS, |
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.p.priv_class = &vbnenc_class, |
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.init = vbn_init, |
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FF_CODEC_ENCODE_CB(vbn_encode), |
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.priv_data_size = sizeof(VBNContext), |
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.p.pix_fmts = (const enum AVPixelFormat[]) { |
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AV_PIX_FMT_RGBA, AV_PIX_FMT_RGB24, AV_PIX_FMT_NONE, |
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}, |
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.caps_internal = FF_CODEC_CAP_INIT_CLEANUP, |
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};
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