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