mirror of https://github.com/FFmpeg/FFmpeg.git
Marton Balint
3 years ago
parent
013d774e22
commit
ee50cc18b3
10 changed files with 200 additions and 6 deletions
@ -0,0 +1,173 @@ |
||||
/*
|
||||
* 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; |
||||
TextureDSPContext dxtc; |
||||
PutByteContext pb; |
||||
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 *pb = &ctx->pb; |
||||
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_le32(pb, VBN_MAGIC); |
||||
bytestream2_put_le32(pb, VBN_MAJOR); |
||||
bytestream2_put_le32(pb, VBN_MINOR); |
||||
bytestream2_put_le32(pb, frame->width); |
||||
bytestream2_put_le32(pb, frame->height); |
||||
bytestream2_put_le32(pb, frame->format == AV_PIX_FMT_RGBA ? 4 : 3); |
||||
bytestream2_put_le32(pb, ctx->format); |
||||
bytestream2_put_le32(pb, frame->format == AV_PIX_FMT_RGBA ? VBN_PIX_RGBA : VBN_PIX_RGB); |
||||
bytestream2_put_le32(pb, 0); // mipmaps
|
||||
bytestream2_put_le32(pb, pkt_size - VBN_HEADER_SIZE); |
||||
bytestream2_seek_p(pb, 64, SEEK_SET); |
||||
bytestream2_put_le32(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; |
||||
avctx->execute2(avctx, ff_texturedsp_compress_thread, &ctx->enc, NULL, ctx->enc.slice_count); |
||||
} else { |
||||
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; |
||||
} |
||||
|
||||
static av_cold int vbn_close(AVCodecContext *avctx) |
||||
{ |
||||
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, "format" }, |
||||
{ "raw", "RAW texture", 0, AV_OPT_TYPE_CONST, { .i64 = VBN_FORMAT_RAW }, 0, 0, FLAGS, "format" }, |
||||
{ "dxt1", "DXT1 texture", 0, AV_OPT_TYPE_CONST, { .i64 = VBN_FORMAT_DXT1 }, 0, 0, FLAGS, "format" }, |
||||
{ "dxt5", "DXT5 texture", 0, AV_OPT_TYPE_CONST, { .i64 = VBN_FORMAT_DXT5 }, 0, 0, FLAGS, "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", |
||||
.p.long_name = NULL_IF_CONFIG_SMALL("Vizrt Binary Image"), |
||||
.p.type = AVMEDIA_TYPE_VIDEO, |
||||
.p.id = AV_CODEC_ID_VBN, |
||||
.p.capabilities = AV_CODEC_CAP_SLICE_THREADS, |
||||
.p.priv_class = &vbnenc_class, |
||||
.init = vbn_init, |
||||
FF_CODEC_ENCODE_CB(vbn_encode), |
||||
.close = vbn_close, |
||||
.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_THREADSAFE | |
||||
FF_CODEC_CAP_INIT_CLEANUP, |
||||
}; |
||||
Loading…
Reference in new issue