mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
790f793844
There are lots of files that don't need it: The number of object files that actually need it went down from 2011 to 884 here. Keep it for external users in order to not cause breakages. Also improve the other headers a bit while just at it. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
189 lines
6.3 KiB
C
189 lines
6.3 KiB
C
/*
|
|
* Vizrt Binary Image decoder
|
|
*
|
|
* 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 decoder
|
|
*/
|
|
|
|
#include "avcodec.h"
|
|
#include "bytestream.h"
|
|
#include "codec_internal.h"
|
|
#include "decode.h"
|
|
#include "texturedsp.h"
|
|
#include "vbn.h"
|
|
#include "libavutil/imgutils.h"
|
|
#include "libavutil/mem.h"
|
|
|
|
typedef struct VBNContext {
|
|
TextureDSPContext texdsp;
|
|
TextureDSPThreadContext dec;
|
|
} VBNContext;
|
|
|
|
static av_cold int vbn_init(AVCodecContext *avctx)
|
|
{
|
|
VBNContext *ctx = avctx->priv_data;
|
|
ff_texturedsp_init(&ctx->texdsp);
|
|
return 0;
|
|
}
|
|
|
|
static int decompress(AVCodecContext *avctx, GetByteContext *gb,
|
|
int compression, uint8_t **outbuf)
|
|
{
|
|
if (compression == VBN_COMPRESSION_NONE) // outbuf is left NULL because gb->buf can be used directly
|
|
return bytestream2_get_bytes_left(gb);
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "Unsupported VBN compression: 0x%08x\n", compression);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
static int vbn_decode_frame(AVCodecContext *avctx,
|
|
AVFrame *frame, int *got_frame,
|
|
AVPacket *avpkt)
|
|
{
|
|
VBNContext *ctx = avctx->priv_data;
|
|
GetByteContext gb0, *const gb = &gb0;
|
|
uint8_t *image_buf = NULL;
|
|
int image_len;
|
|
int width, height, components, format, compression, pix_fmt, linesize, data_size;
|
|
int ret;
|
|
|
|
bytestream2_init(gb, avpkt->data, avpkt->size);
|
|
|
|
if (bytestream2_get_bytes_left(gb) < VBN_HEADER_SIZE) {
|
|
av_log(avctx, AV_LOG_ERROR, "VBN header truncated\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (bytestream2_get_le32u(gb) != VBN_MAGIC ||
|
|
bytestream2_get_le32u(gb) != VBN_MAJOR ||
|
|
bytestream2_get_le32u(gb) != VBN_MINOR) {
|
|
av_log(avctx, AV_LOG_ERROR, "Invalid VBN header\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
width = bytestream2_get_le32u(gb);
|
|
height = bytestream2_get_le32u(gb);
|
|
components = bytestream2_get_le32u(gb);
|
|
format = bytestream2_get_le32u(gb);
|
|
pix_fmt = bytestream2_get_le32u(gb);
|
|
bytestream2_get_le32u(gb); // mipmaps
|
|
data_size = bytestream2_get_le32u(gb);
|
|
bytestream2_seek(gb, VBN_HEADER_SIZE, SEEK_SET);
|
|
|
|
compression = format & 0xffffff00;
|
|
format = format & 0xff;
|
|
|
|
if (data_size != bytestream2_get_bytes_left(gb)) {
|
|
av_log(avctx, AV_LOG_ERROR, "Truncated packet\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (pix_fmt != VBN_PIX_RGBA && pix_fmt != VBN_PIX_RGB) {
|
|
av_log(avctx, AV_LOG_ERROR, "Unsupported pixel format: 0x%08x\n", pix_fmt);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
ret = ff_set_dimensions(avctx, width, height);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (format == VBN_FORMAT_RAW) {
|
|
if (pix_fmt == VBN_PIX_RGB && components == 3) {
|
|
avctx->pix_fmt = AV_PIX_FMT_RGB24;
|
|
linesize = avctx->width * 3;
|
|
} else if (pix_fmt == VBN_PIX_RGBA && components == 4) {
|
|
avctx->pix_fmt = AV_PIX_FMT_RGBA;
|
|
linesize = avctx->width * 4;
|
|
} else {
|
|
av_log(avctx, AV_LOG_ERROR, "Unsupported number of components: %d\n", components);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
} else if (format == VBN_FORMAT_DXT1 || format == VBN_FORMAT_DXT5) {
|
|
if (avctx->width % TEXTURE_BLOCK_W || avctx->height % TEXTURE_BLOCK_H) {
|
|
av_log(avctx, AV_LOG_ERROR, "DXTx compression only supports 4 pixel aligned resolutions\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
avctx->pix_fmt = AV_PIX_FMT_RGBA;
|
|
if (format == VBN_FORMAT_DXT1) {
|
|
ctx->dec.tex_funct = ctx->texdsp.dxt1_block;
|
|
ctx->dec.tex_ratio = 8;
|
|
linesize = avctx->coded_width / 2;
|
|
} else {
|
|
ctx->dec.tex_funct = ctx->texdsp.dxt5_block;
|
|
ctx->dec.tex_ratio = 16;
|
|
linesize = avctx->coded_width;
|
|
}
|
|
} else {
|
|
av_log(avctx, AV_LOG_ERROR, "Unsupported VBN format: 0x%02x\n", format);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
image_len = decompress(avctx, gb, compression, &image_buf);
|
|
if (image_len < 0)
|
|
return image_len;
|
|
|
|
if (image_len < linesize * avctx->coded_height) {
|
|
av_log(avctx, AV_LOG_ERROR, "Insufficent data\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto out;
|
|
}
|
|
|
|
ret = ff_get_buffer(avctx, frame, 0);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
frame->pict_type = AV_PICTURE_TYPE_I;
|
|
frame->flags |= AV_FRAME_FLAG_KEY;
|
|
|
|
if (format == VBN_FORMAT_RAW) {
|
|
uint8_t *flipped = frame->data[0] + frame->linesize[0] * (frame->height - 1);
|
|
av_image_copy_plane(flipped, -frame->linesize[0], image_buf ? image_buf : gb->buffer, linesize, linesize, frame->height);
|
|
} else {
|
|
ctx->dec.slice_count = av_clip(avctx->thread_count, 1, avctx->coded_height / TEXTURE_BLOCK_H);
|
|
ctx->dec.tex_data.in = image_buf ? image_buf : gb->buffer;
|
|
ctx->dec.raw_ratio = 16;
|
|
ctx->dec.frame_data.out = frame->data[0] + frame->linesize[0] * (frame->height - 1);
|
|
ctx->dec.stride = -frame->linesize[0];
|
|
ctx->dec.width = avctx->coded_width;
|
|
ctx->dec.height = avctx->coded_height;
|
|
ff_texturedsp_exec_decompress_threads(avctx, &ctx->dec);
|
|
}
|
|
|
|
*got_frame = 1;
|
|
ret = avpkt->size;
|
|
|
|
out:
|
|
av_freep(&image_buf);
|
|
return ret;
|
|
}
|
|
|
|
const FFCodec ff_vbn_decoder = {
|
|
.p.name = "vbn",
|
|
CODEC_LONG_NAME("Vizrt Binary Image"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_VBN,
|
|
.init = vbn_init,
|
|
FF_CODEC_DECODE_CB(vbn_decode_frame),
|
|
.priv_data_size = sizeof(VBNContext),
|
|
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS,
|
|
};
|