[FFmpeg-devel] [PATCH v05] fbdetile cpu based detiling of framebuffer v05
hanishkvc
hanishkvc at gmail.com
Fri Jul 3 00:51:54 EEST 2020
v05-20200703IST0255, fbdetile, hwdownload, kmsgrab, plus
Moved the core detiling logic into libavutil/fbtile.[c|h]
Currently it supports detiling, later will be updated to support
tiling also using the same core funda. Currently detiling is
supported for Intel Tile-X|Y|Yf layouts. However the logic is
easily configurable to support additional tile layouts, in future.
Inturn this is used to support detiling of hwdownload frames.
So one can detile when capturing from a hardware context if reqd,
provided it supports one of the intel tile-x|y|yf formats. This
can be used to detile when using kmsgrab for example.
kmsgrab updated to use GetFB2 drm api, so that format_modifier
can be autodetected and used for detiling by hwdownload, if
fbdetile=1 (auto mode) is used.
However if one doesn't want to use detiling during capture, one
can use the fbdetile video filter to apply the detiling at a later
stage as a seperate pass.
Both hwdownload and fbdetile filters share the same core logic,
for detiling.
Supported fbdetile options (which is same for both filters) are
0 = Dont detile, 1 = Auto detile (hwdownload only),
2 = Intel Tile-X, 3 = Intel Tile-Y,
4 = Intel Tile-Yf,
Default for vf_hwdownload is 0 and for vf_fbdetile is 2.
NOTE: THis is a consolidated patch, which contains previous versions
also.
NOTE: Currently the detiling is applied after the hwdownload has
already fetched the output, later have to check, if it can be done
while fetching if current hwcontext transfer logic copies after mmap.
However lineSize|pitch|stride impact on detile logic needs to be
thought through once, before doing this.
NOTE: Tile-X explicitly tested | cross checked. TIle-Y and Tile-Yf
roughly logicaly varified by looking at the color pattern generated
from a rotating color sequence based linear image, and my understanding
of the layout by reading Intel documentation.
---
Changelog | 2 +
doc/filters.texi | 97 +++++++++
libavdevice/kmsgrab.c | 19 ++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/vf_fbdetile.c | 236 +++++++++++++++++++++
libavfilter/vf_hwdownload.c | 50 ++++-
libavutil/Makefile | 2 +
libavutil/fbtile.c | 411 ++++++++++++++++++++++++++++++++++++
libavutil/fbtile.h | 213 +++++++++++++++++++
10 files changed, 1030 insertions(+), 2 deletions(-)
create mode 100644 libavfilter/vf_fbdetile.c
create mode 100644 libavutil/fbtile.c
create mode 100644 libavutil/fbtile.h
diff --git a/Changelog b/Changelog
index a60e7d2eb8..00b4884698 100644
--- a/Changelog
+++ b/Changelog
@@ -2,6 +2,8 @@ Entries are sorted chronologically from oldest to youngest within each release,
releases are sorted from youngest to oldest.
version <next>:
+- hwdownload support framebuffer layout detiling (certain Intel tile layouts)
+- fbdetile cpu based framebuffer layout detiling video filter
- AudioToolbox output device
- MacCaption demuxer
diff --git a/doc/filters.texi b/doc/filters.texi
index 67892e0afb..f1332e360f 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -12097,6 +12097,25 @@ Not all formats will be supported on the output - it may be necessary to insert
an additional @option{format} filter immediately following in the graph to get
the output in a supported format.
+It supports the following optional parameters
+
+ at table @option
+ at item fbdetile
+Specify type of CPU based FrameBuffer layout detiling to apply. The supported values are
+ at table @var
+ at item 0
+Dont do sw detiling (the default).
+ at item 1
+Auto detect detile logic to apply (for hwcontext_drm).
+ at item 2
+intel tile-x to linear conversion.
+ at item 3
+intel tile-y to linear conversion.
+ at item 4
+intel tile-yf to linear conversion.
+ at end table
+ at end table
+
@section hwmap
Map hardware frames to system memory or to another device.
@@ -12210,6 +12229,84 @@ It accepts the following optional parameters:
The number of the CUDA device to use
@end table
+ at anchor{fbdetile}
+ at section fbdetile
+
+Detiles the Framebuffer tile layout into a linear layout using CPU.
+
+It currently supports conversion from Intel legacy tile-x and tile-y as well
+as the newer Intel tile-yf layouts into a linear layout. This is useful if
+one is using kmsgrab and hwdownload to capture a screen which is using one
+of these non-linear layouts.
+
+NOTE: It also provides a generic detiling logic, which can be easily configured
+to detile many different tiling schemes if required, in future. The same is
+used for detiling the intel tile-yf layout. Also sample configuration to handle
+intel tile-x and tile-y using generic detile logic is also shown for reference,
+in the code.
+
+Currently it expects the data to be a 32bit RGB based pixel format. However
+the logic doesnt do any pixel format conversion or so. Later will be enabling
+16bit RGB data also, as the logic is transparent to it at one level.
+
+One could either insert this into the filter chain while capturing itself,
+or else, if it is slowing things down or so, then one could instead insert
+it into the filter chain during playback or transcoding or so.
+
+It supports the following optional parameters
+
+ at table @option
+ at item type
+Specify which detiling conversion to apply. The supported values are
+ at table @var
+ at item 0
+Dont do detiling.
+ at item 1
+Auto detect detile logic to apply (supported in vf_hwdownload, not in vf_fbdetile).
+ at item 2
+intel tile-x to linear conversion (the default).
+ at item 3
+intel tile-y to linear conversion.
+ at item 4
+intel tile-yf to linear conversion.
+ at end table
+ at end table
+
+If one wants to convert during capture itself, one could do
+ at example
+ffmpeg -f kmsgrab -i - -vf "hwdownload,format=bgr0,fbdetile" OUTPUT
+ at end example
+
+However if one wants to convert after the tiled data has been already captured
+ at example
+ffmpeg -i INPUT -vf "fbdetile" OUTPUT
+ at end example
+ at example
+ffplay -i INPUT -vf "fbdetile"
+ at end example
+
+NOTE: While transcoding a test 1080p h264 stream, with 276 frames, below was
+the average times taken by the different detile logics.
+ at example
+rm out.mp4; time ./ffmpeg -i input.mp4 out.mp4
+rm out.mp4; time ./ffmpeg -i input.mp4 -vf fbdetile=0 out.mp4
+rm out.mp4; time ./ffmpeg -i input.mp4 -vf fbdetile=1 out.mp4
+rm out.mp4; time ./ffmpeg -i input.mp4 -vf fbdetile=2 out.mp4
+ at end example
+ at table @option
+ at item with no fbdetile filter
+it took ~7.28 secs, i5-8th Gen
+it took ~10.1 secs, i7-7th Gen
+ at item with fbdetile=0 filter, Intel Tile-X
+it took ~8.69 secs, i5-8th Gen
+it took ~13.3 secs, i7-7th Gen
+ at item with fbdetile=1 filter, Intel Tile-Y
+it took ~9.20 secs. i5-8th Gen
+it took ~13.5 secs. i7-7th Gen
+ at item with fbdetile=2 filter, Intel Tile-Yf
+it took ~13.8 secs. i7-7th Gen
+ at end table
+
@section hqx
Apply a high-quality magnification filter designed for pixel art. This filter
diff --git a/libavdevice/kmsgrab.c b/libavdevice/kmsgrab.c
index d0de774871..8f32520d21 100644
--- a/libavdevice/kmsgrab.c
+++ b/libavdevice/kmsgrab.c
@@ -239,6 +239,7 @@ static av_cold int kmsgrab_read_header(AVFormatContext *avctx)
drmModePlaneRes *plane_res = NULL;
drmModePlane *plane = NULL;
drmModeFB *fb = NULL;
+ drmModeFB2 *fb2 = NULL;
AVStream *stream;
int err, i;
@@ -364,6 +365,22 @@ static av_cold int kmsgrab_read_header(AVFormatContext *avctx)
goto fail;
}
+ fb2 = drmModeGetFB2(ctx->hwctx->fd, plane->fb_id);
+ if (!fb2) {
+ err = errno;
+ av_log(avctx, AV_LOG_ERROR, "Failed to get "
+ "framebuffer2 %"PRIu32": %s.\n",
+ plane->fb_id, strerror(err));
+ err = AVERROR(err);
+ goto fail;
+ }
+
+ av_log(avctx, AV_LOG_INFO, "Template framebuffer2 is %"PRIu32": "
+ "%"PRIu32"x%"PRIu32", pixel_format: 0x%"PRIx32", format_modifier: 0x%"PRIx64".\n",
+ fb2->fb_id, fb2->width, fb2->height, fb2->pixel_format, fb2->modifier);
+
+ ctx->drm_format_modifier = fb2->modifier;
+
stream = avformat_new_stream(avctx, NULL);
if (!stream) {
err = AVERROR(ENOMEM);
@@ -408,6 +425,8 @@ fail:
drmModeFreePlane(plane);
if (fb)
drmModeFreeFB(fb);
+ if (fb2)
+ drmModeFreeFB2(fb2);
return err;
}
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 5123540653..bdb0c379ae 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -280,6 +280,7 @@ OBJS-$(CONFIG_HWDOWNLOAD_FILTER) += vf_hwdownload.o
OBJS-$(CONFIG_HWMAP_FILTER) += vf_hwmap.o
OBJS-$(CONFIG_HWUPLOAD_CUDA_FILTER) += vf_hwupload_cuda.o
OBJS-$(CONFIG_HWUPLOAD_FILTER) += vf_hwupload.o
+OBJS-$(CONFIG_FBDETILE_FILTER) += vf_fbdetile.o
OBJS-$(CONFIG_HYSTERESIS_FILTER) += vf_hysteresis.o framesync.o
OBJS-$(CONFIG_IDET_FILTER) += vf_idet.o
OBJS-$(CONFIG_IL_FILTER) += vf_il.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 1183e40267..f8dceb2a88 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -265,6 +265,7 @@ extern AVFilter ff_vf_hwdownload;
extern AVFilter ff_vf_hwmap;
extern AVFilter ff_vf_hwupload;
extern AVFilter ff_vf_hwupload_cuda;
+extern AVFilter ff_vf_fbdetile;
extern AVFilter ff_vf_hysteresis;
extern AVFilter ff_vf_idet;
extern AVFilter ff_vf_il;
diff --git a/libavfilter/vf_fbdetile.c b/libavfilter/vf_fbdetile.c
new file mode 100644
index 0000000000..54b13fa023
--- /dev/null
+++ b/libavfilter/vf_fbdetile.c
@@ -0,0 +1,236 @@
+/*
+ * Copyright (c) 2020 HanishKVC
+ *
+ * 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
+ * Detile the Frame buffer's tile layout using the cpu
+ * Currently it supports detiling of following layouts
+ * legacy Intel Tile-X
+ * legacy Intel Tile-Y
+ * newer Intel Tile-Yf
+ * More tiling layouts can be easily supported by adding configuration data
+ * for the generic detile logic, wrt the required tiling schemes.
+ *
+ */
+
+/*
+ * ToThink|Check: Optimisations
+ *
+ * Does gcc setting used by ffmpeg allows memcpy | stringops inlining,
+ * loop unrolling, better native matching instructions, additional
+ * optimisations, ...
+ *
+ * Does gcc map to optimal memcpy logic, based on the situation it is
+ * used in i.e like
+ * based on size of transfer, alignment, architecture, etc
+ * a suitable combination of inlining and or rep movsb and or
+ * simd load/store and or unrolling and or ...
+ *
+ * If not, may be look at vector_size or intrinsics or appropriate arch
+ * and cpu specific inline asm or ...
+ *
+ */
+
+/*
+ * Performance check results on i7-7500u
+ * TileYf, TileGX, TileGY using detile_generic_opti
+ * This mainly impacts TileYf, due to its deeper subtiling
+ * Without opti, its TSCCnt rises to aroun 11.XYM
+ * Run Type : Type : Seconds Max, Min : TSCCnt Min, Max
+ * Non filter run: : 10.11s, 09.96s :
+ * fbdetile=2 run: TileX : 13.45s, 13.20s : 05.95M, 06.10M
+ * fbdetile=3 run: TileY : 13.50s, 13.39s : 06.22M, 06.39M
+ * fbdetile=4 run: TileYf : 13.75s, 13.63s : 09.82M, 09.90M
+ * fbdetile=5 run: TileGX : 13.70s, 13.32s : 06.15M, 06.24M
+ * fbdetile=6 run: TileGY : 14.12s, 13.57s : 08.75M, 09.10M
+ */
+
+#include "libavutil/avassert.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/opt.h"
+#include "libavutil/fbtile.h"
+#include "avfilter.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
+
+// Use Optimised detile_generic or the Simpler but more fine grained one
+#define DETILE_GENERIC_OPTI 1
+// Enable printing of the tile walk
+#undef DEBUG_FBTILE
+// Print time taken by detile using performance counter
+#ifdef ARCH_X86
+#define DEBUG_PERF 1
+#else
+#undef DEBUG_PERF
+#endif
+
+#ifdef DEBUG_PERF
+#include <x86intrin.h>
+uint64_t perfTime = 0;
+int perfCnt = 0;
+#endif
+
+typedef struct FBDetileContext {
+ const AVClass *class;
+ int width, height;
+ int type;
+} FBDetileContext;
+
+#define OFFSET(x) offsetof(FBDetileContext, x)
+#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
+static const AVOption fbdetile_options[] = {
+ { "type", "set framebuffer tile|format_modifier conversion type", OFFSET(type), AV_OPT_TYPE_INT, {.i64=TILE_INTELX}, 0, TILE_NONE_END-1, FLAGS, "type" },
+ { "None", "Dont detile", 0, AV_OPT_TYPE_CONST, {.i64=TILE_NONE}, INT_MIN, INT_MAX, FLAGS, "type" },
+ { "Auto", "Auto detect tile conversion type, NotImplemented", 0, AV_OPT_TYPE_CONST, {.i64=TILE_AUTO}, INT_MIN, INT_MAX, FLAGS, "type" },
+ { "intelx", "Intel Tile-X layout", 0, AV_OPT_TYPE_CONST, {.i64=TILE_INTELX}, INT_MIN, INT_MAX, FLAGS, "type" },
+ { "intely", "Intel Tile-Y layout", 0, AV_OPT_TYPE_CONST, {.i64=TILE_INTELY}, INT_MIN, INT_MAX, FLAGS, "type" },
+ { "intelyf", "Intel Tile-Yf layout", 0, AV_OPT_TYPE_CONST, {.i64=TILE_INTELYF}, INT_MIN, INT_MAX, FLAGS, "type" },
+ { "intelgx", "Intel Tile-X layout, GenericDetile", 0, AV_OPT_TYPE_CONST, {.i64=TILE_INTELGX}, INT_MIN, INT_MAX, FLAGS, "type" },
+ { "intelgy", "Intel Tile-Y layout, GenericDetile", 0, AV_OPT_TYPE_CONST, {.i64=TILE_INTELGY}, INT_MIN, INT_MAX, FLAGS, "type" },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(fbdetile);
+
+static av_cold int init(AVFilterContext *ctx)
+{
+ FBDetileContext *fbdetile = ctx->priv;
+
+ if (fbdetile->type == TILE_INTELX) {
+ fprintf(stderr,"INFO:fbdetile:init: Intel tile-x to linear\n");
+ } else if (fbdetile->type == TILE_INTELY) {
+ fprintf(stderr,"INFO:fbdetile:init: Intel tile-y to linear\n");
+ } else if (fbdetile->type == TILE_INTELYF) {
+ fprintf(stderr,"INFO:fbdetile:init: Intel tile-yf to linear\n");
+ } else if (fbdetile->type == TILE_INTELGX) {
+ fprintf(stderr,"INFO:fbdetile:init: Intel tile-x to linear, using generic detile\n");
+ } else if (fbdetile->type == TILE_INTELGY) {
+ fprintf(stderr,"INFO:fbdetile:init: Intel tile-y to linear, using generic detile\n");
+ } else {
+ fprintf(stderr,"DBUG:fbdetile:init: Unknown Tile format specified, shouldnt reach here\n");
+ }
+ fbdetile->width = 1920;
+ fbdetile->height = 1080;
+ return 0;
+}
+
+static int query_formats(AVFilterContext *ctx)
+{
+ // Currently only RGB based 32bit formats are specified
+ // TODO: Technically the logic is transparent to 16bit RGB formats also to a great extent
+ static const enum AVPixelFormat pix_fmts[] = {AV_PIX_FMT_RGB0, AV_PIX_FMT_0RGB, AV_PIX_FMT_BGR0, AV_PIX_FMT_0BGR,
+ AV_PIX_FMT_RGBA, AV_PIX_FMT_ARGB, AV_PIX_FMT_BGRA, AV_PIX_FMT_ABGR,
+ AV_PIX_FMT_NONE};
+ AVFilterFormats *fmts_list;
+
+ fmts_list = ff_make_format_list(pix_fmts);
+ if (!fmts_list)
+ return AVERROR(ENOMEM);
+ return ff_set_common_formats(ctx, fmts_list);
+}
+
+static int config_props(AVFilterLink *inlink)
+{
+ AVFilterContext *ctx = inlink->dst;
+ FBDetileContext *fbdetile = ctx->priv;
+
+ fbdetile->width = inlink->w;
+ fbdetile->height = inlink->h;
+ fprintf(stderr,"DBUG:fbdetile:config_props: %d x %d\n", fbdetile->width, fbdetile->height);
+
+ return 0;
+}
+
+
+static int filter_frame(AVFilterLink *inlink, AVFrame *in)
+{
+ AVFilterContext *ctx = inlink->dst;
+ FBDetileContext *fbdetile = ctx->priv;
+ AVFilterLink *outlink = ctx->outputs[0];
+ AVFrame *out;
+
+ if (fbdetile->type == TILE_NONE)
+ return ff_filter_frame(outlink, in);
+
+ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!out) {
+ av_frame_free(&in);
+ return AVERROR(ENOMEM);
+ }
+ av_frame_copy_props(out, in);
+
+#ifdef DEBUG_PERF
+ uint64_t perfStart = __rdtsc();
+#endif
+
+ detile_this(fbdetile->type, 0, fbdetile->width, fbdetile->height,
+ out->data[0], out->linesize[0],
+ in->data[0], in->linesize[0], 4);
+
+#ifdef DEBUG_PERF
+ uint64_t perfEnd = __rdtsc();
+ perfTime += (perfEnd - perfStart);
+ perfCnt += 1;
+#endif
+
+ av_frame_free(&in);
+ return ff_filter_frame(outlink, out);
+}
+
+static av_cold void uninit(AVFilterContext *ctx)
+{
+#ifdef DEBUG_PERF
+ fprintf(stderr, "DBUG:fbdetile:uninit:perf: AvgTSCCnt %ld\n", perfTime/perfCnt);
+#endif
+}
+
+static const AVFilterPad fbdetile_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_props,
+ .filter_frame = filter_frame,
+ },
+ { NULL }
+};
+
+static const AVFilterPad fbdetile_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_fbdetile = {
+ .name = "fbdetile",
+ .description = NULL_IF_CONFIG_SMALL("Detile Framebuffer using CPU"),
+ .priv_size = sizeof(FBDetileContext),
+ .init = init,
+ .uninit = uninit,
+ .query_formats = query_formats,
+ .inputs = fbdetile_inputs,
+ .outputs = fbdetile_outputs,
+ .priv_class = &fbdetile_class,
+ .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
+};
+
+// vim: set expandtab sts=4: //
diff --git a/libavfilter/vf_hwdownload.c b/libavfilter/vf_hwdownload.c
index 33af30cf40..7a3cc4b516 100644
--- a/libavfilter/vf_hwdownload.c
+++ b/libavfilter/vf_hwdownload.c
@@ -22,6 +22,10 @@
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
+#include "libavutil/fbtile.h"
+#ifdef CONFIG_LIBDRM
+#include "libavutil/hwcontext_drm.h"
+#endif
#include "avfilter.h"
#include "formats.h"
@@ -33,8 +37,23 @@ typedef struct HWDownloadContext {
AVBufferRef *hwframes_ref;
AVHWFramesContext *hwframes;
+ int fbdetile;
} HWDownloadContext;
+#define OFFSET(x) offsetof(HWDownloadContext, x)
+#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
+static const AVOption hwdownload_options[] = {
+ { "fbdetile", "set framebuffer detile mode", OFFSET(fbdetile), AV_OPT_TYPE_INT, {.i64=TILE_NONE}, 0, TILE_NONE_END-1, FLAGS, "fbdetile" },
+ { "none", "No SW detiling", 0, AV_OPT_TYPE_CONST, {.i64=TILE_NONE}, INT_MIN, INT_MAX, FLAGS, "fbdetile" },
+ { "auto", "auto select based on format_modifier", 0, AV_OPT_TYPE_CONST, {.i64=TILE_AUTO}, INT_MIN, INT_MAX, FLAGS, "fbdetile" },
+ { "intelx", "Intel Tile-X layout", 0, AV_OPT_TYPE_CONST, {.i64=TILE_INTELX}, INT_MIN, INT_MAX, FLAGS, "fbdetile" },
+ { "intely", "Intel Tile-Y layout", 0, AV_OPT_TYPE_CONST, {.i64=TILE_INTELY}, INT_MIN, INT_MAX, FLAGS, "fbdetile" },
+ { "intelyf", "Intel Tile-Yf layout", 0, AV_OPT_TYPE_CONST, {.i64=TILE_INTELYF}, INT_MIN, INT_MAX, FLAGS, "fbdetile" },
+ { "intelgx", "Intel Tile-X layout, GenericDetile", 0, AV_OPT_TYPE_CONST, {.i64=TILE_INTELGX}, INT_MIN, INT_MAX, FLAGS, "fbdetile" },
+ { "intelgy", "Intel Tile-Y layout, GenericDetile", 0, AV_OPT_TYPE_CONST, {.i64=TILE_INTELGY}, INT_MIN, INT_MAX, FLAGS, "fbdetile" },
+ { NULL }
+};
+
static int hwdownload_query_formats(AVFilterContext *avctx)
{
AVFilterFormats *infmts = NULL;
@@ -128,6 +147,7 @@ static int hwdownload_filter_frame(AVFilterLink *link, AVFrame *input)
AVFilterLink *outlink = avctx->outputs[0];
HWDownloadContext *ctx = avctx->priv;
AVFrame *output = NULL;
+ AVFrame *output2 = NULL;
int err;
if (!ctx->hwframes_ref || !input->hw_frames_ctx) {
@@ -162,13 +182,39 @@ static int hwdownload_filter_frame(AVFilterLink *link, AVFrame *input)
if (err < 0)
goto fail;
+ output2 = ff_get_video_buffer(outlink, ctx->hwframes->width,
+ ctx->hwframes->height);
+ if (!output2) {
+ err = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ output2->width = outlink->w;
+ output2->height = outlink->h;
+ uint64_t formatModifier = 0;
+#ifdef CONFIG_LIBDRM
+ if (input->format == AV_PIX_FMT_DRM_PRIME) {
+ AVDRMFrameDescriptor *drmFrame = input->data[0];
+ formatModifier = drmFrame->objects[0].format_modifier;
+ }
+#endif
+ detile_this(ctx->fbdetile, formatModifier, output2->width, output2->height,
+ output2->data[0], output2->linesize[0],
+ output->data[0], output->linesize[0], 4);
+
+ err = av_frame_copy_props(output2, input);
+ if (err < 0)
+ goto fail;
+
av_frame_free(&input);
+ av_frame_free(&output);
- return ff_filter_frame(avctx->outputs[0], output);
+ return ff_filter_frame(avctx->outputs[0], output2);
fail:
av_frame_free(&input);
av_frame_free(&output);
+ av_frame_free(&output2);
return err;
}
@@ -182,7 +228,7 @@ static av_cold void hwdownload_uninit(AVFilterContext *avctx)
static const AVClass hwdownload_class = {
.class_name = "hwdownload",
.item_name = av_default_item_name,
- .option = NULL,
+ .option = hwdownload_options,
.version = LIBAVUTIL_VERSION_INT,
};
diff --git a/libavutil/Makefile b/libavutil/Makefile
index 9b08372eb2..9b58ac5980 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -84,6 +84,7 @@ HEADERS = adler32.h \
xtea.h \
tea.h \
tx.h \
+ fbtile.h \
HEADERS-$(CONFIG_LZO) += lzo.h
@@ -169,6 +170,7 @@ OBJS = adler32.o \
tx_float.o \
tx_double.o \
tx_int32.o \
+ fbtile.o \
video_enc_params.o \
diff --git a/libavutil/fbtile.c b/libavutil/fbtile.c
new file mode 100644
index 0000000000..c21e133ea7
--- /dev/null
+++ b/libavutil/fbtile.c
@@ -0,0 +1,411 @@
+/*
+ * CPU based Framebuffer Tile DeTile logic
+ * Copyright (c) 2020 C Hanish Menon <HanishKVC>
+ *
+ * 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
+ */
+
+#include "avutil.h"
+#include "common.h"
+#include "fbtile.h"
+#ifdef CONFIG_LIBDRM
+#include <drm_fourcc.h>
+#endif
+
+
+int fbtilemode_from_formatmodifier(uint64_t formatModifier)
+{
+ int mode = TILE_NONE_END;
+
+#ifdef CONFIG_LIBDRM
+ switch(formatModifier) {
+ case DRM_FORMAT_MOD_LINEAR:
+ mode = TILE_NONE;
+ break;
+ case I915_FORMAT_MOD_X_TILED:
+ mode = TILE_INTELX;
+ break;
+ case I915_FORMAT_MOD_Y_TILED:
+ mode = TILE_INTELY;
+ break;
+ case I915_FORMAT_MOD_Yf_TILED:
+ mode = TILE_INTELYF;
+ break;
+ default:
+ mode = TILE_NONE_END;
+ break;
+ }
+#endif
+#ifdef DEBUG_FBTILE_FORMATMODIFIER_MAPPING
+ fprintf(stderr,"DBUG:fbtile:formatmodifier[%lx] mapped to mode[%d]\n", formatModifier, mode);
+#endif
+ return mode;
+}
+
+
+void detile_intelx(int w, int h,
+ uint8_t *dst, int dstLineSize,
+ const uint8_t *src, int srcLineSize)
+{
+ // Offsets and LineSize are in bytes
+ const int pixBytes = 4; // bytes per pixel
+ const int tileW = 128; // tileWidth inPixels, 512/4, For a 32Bits/Pixel framebuffer
+ const int tileH = 8; // tileHeight inPixelLines
+ const int tileWBytes = tileW*pixBytes; // tileWidth inBytes
+
+ if (w*pixBytes != srcLineSize) {
+ fprintf(stderr,"DBUG:fbdetile:intelx: w%dxh%d, dL%d, sL%d\n", w, h, dstLineSize, srcLineSize);
+ fprintf(stderr,"ERRR:fbdetile:intelx: dont support LineSize | Pitch going beyond width\n");
+ }
+ int sO = 0; // srcOffset inBytes
+ int dX = 0; // destX inPixels
+ int dY = 0; // destY inPixels
+ int nTLines = (w*h)/tileW; // numTileLines; One TileLine = One TileWidth
+ int cTL = 0; // curTileLine
+ while (cTL < nTLines) {
+ int dO = dY*dstLineSize + dX*pixBytes;
+#ifdef DEBUG_FBTILE
+ fprintf(stderr,"DBUG:fbdetile:intelx: dX%d dY%d, sO%d, dO%d\n", dX, dY, sO, dO);
+#endif
+ memcpy(dst+dO+0*dstLineSize, src+sO+0*tileWBytes, tileWBytes);
+ memcpy(dst+dO+1*dstLineSize, src+sO+1*tileWBytes, tileWBytes);
+ memcpy(dst+dO+2*dstLineSize, src+sO+2*tileWBytes, tileWBytes);
+ memcpy(dst+dO+3*dstLineSize, src+sO+3*tileWBytes, tileWBytes);
+ memcpy(dst+dO+4*dstLineSize, src+sO+4*tileWBytes, tileWBytes);
+ memcpy(dst+dO+5*dstLineSize, src+sO+5*tileWBytes, tileWBytes);
+ memcpy(dst+dO+6*dstLineSize, src+sO+6*tileWBytes, tileWBytes);
+ memcpy(dst+dO+7*dstLineSize, src+sO+7*tileWBytes, tileWBytes);
+ dX += tileW;
+ if (dX >= w) {
+ dX = 0;
+ dY += tileH;
+ }
+ sO = sO + tileW*tileH*pixBytes;
+ cTL += tileH;
+ }
+}
+
+
+/*
+ * Intel Legacy Tile-Y layout conversion support
+ *
+ * currently done in a simple dumb way. Two low hanging optimisations
+ * that could be readily applied are
+ *
+ * a) unrolling the inner for loop
+ * --- Given small size memcpy, should help, DONE
+ *
+ * b) using simd based 128bit loading and storing along with prefetch
+ * hinting.
+ *
+ * TOTHINK|CHECK: Does memcpy already does this and more if situation
+ * is right?!
+ *
+ * As code (or even intrinsics) would be specific to each architecture,
+ * avoiding for now. Later have to check if vector_size attribute and
+ * corresponding implementation by gcc can handle different architectures
+ * properly, such that it wont become worse than memcpy provided for that
+ * architecture.
+ *
+ * Or maybe I could even merge the two intel detiling logics into one, as
+ * the semantic and flow is almost same for both logics.
+ *
+ */
+void detile_intely(int w, int h,
+ uint8_t *dst, int dstLineSize,
+ const uint8_t *src, int srcLineSize)
+{
+ // Offsets and LineSize are in bytes
+ const int pixBytes = 4; // bytesPerPixel
+ // tileW represents subTileWidth here, as it can be repeated to fill a tile
+ const int tileW = 4; // tileWidth inPixels, 16/4, For a 32Bits/Pixel framebuffer
+ const int tileH = 32; // tileHeight inPixelLines
+ const int tileWBytes = tileW*pixBytes; // tileWidth inBytes
+
+ if (w*pixBytes != srcLineSize) {
+ fprintf(stderr,"DBUG:fbdetile:intely: w%dxh%d, dL%d, sL%d\n", w, h, dstLineSize, srcLineSize);
+ fprintf(stderr,"ERRR:fbdetile:intely: dont support LineSize | Pitch going beyond width\n");
+ }
+ int sO = 0;
+ int dX = 0;
+ int dY = 0;
+ const int nTLines = (w*h)/tileW;
+ int cTL = 0;
+ while (cTL < nTLines) {
+ int dO = dY*dstLineSize + dX*pixBytes;
+#ifdef DEBUG_FBTILE
+ fprintf(stderr,"DBUG:fbdetile:intely: dX%d dY%d, sO%d, dO%d\n", dX, dY, sO, dO);
+#endif
+
+ memcpy(dst+dO+0*dstLineSize, src+sO+0*tileWBytes, tileWBytes);
+ memcpy(dst+dO+1*dstLineSize, src+sO+1*tileWBytes, tileWBytes);
+ memcpy(dst+dO+2*dstLineSize, src+sO+2*tileWBytes, tileWBytes);
+ memcpy(dst+dO+3*dstLineSize, src+sO+3*tileWBytes, tileWBytes);
+ memcpy(dst+dO+4*dstLineSize, src+sO+4*tileWBytes, tileWBytes);
+ memcpy(dst+dO+5*dstLineSize, src+sO+5*tileWBytes, tileWBytes);
+ memcpy(dst+dO+6*dstLineSize, src+sO+6*tileWBytes, tileWBytes);
+ memcpy(dst+dO+7*dstLineSize, src+sO+7*tileWBytes, tileWBytes);
+ memcpy(dst+dO+8*dstLineSize, src+sO+8*tileWBytes, tileWBytes);
+ memcpy(dst+dO+9*dstLineSize, src+sO+9*tileWBytes, tileWBytes);
+ memcpy(dst+dO+10*dstLineSize, src+sO+10*tileWBytes, tileWBytes);
+ memcpy(dst+dO+11*dstLineSize, src+sO+11*tileWBytes, tileWBytes);
+ memcpy(dst+dO+12*dstLineSize, src+sO+12*tileWBytes, tileWBytes);
+ memcpy(dst+dO+13*dstLineSize, src+sO+13*tileWBytes, tileWBytes);
+ memcpy(dst+dO+14*dstLineSize, src+sO+14*tileWBytes, tileWBytes);
+ memcpy(dst+dO+15*dstLineSize, src+sO+15*tileWBytes, tileWBytes);
+ memcpy(dst+dO+16*dstLineSize, src+sO+16*tileWBytes, tileWBytes);
+ memcpy(dst+dO+17*dstLineSize, src+sO+17*tileWBytes, tileWBytes);
+ memcpy(dst+dO+18*dstLineSize, src+sO+18*tileWBytes, tileWBytes);
+ memcpy(dst+dO+19*dstLineSize, src+sO+19*tileWBytes, tileWBytes);
+ memcpy(dst+dO+20*dstLineSize, src+sO+20*tileWBytes, tileWBytes);
+ memcpy(dst+dO+21*dstLineSize, src+sO+21*tileWBytes, tileWBytes);
+ memcpy(dst+dO+22*dstLineSize, src+sO+22*tileWBytes, tileWBytes);
+ memcpy(dst+dO+23*dstLineSize, src+sO+23*tileWBytes, tileWBytes);
+ memcpy(dst+dO+24*dstLineSize, src+sO+24*tileWBytes, tileWBytes);
+ memcpy(dst+dO+25*dstLineSize, src+sO+25*tileWBytes, tileWBytes);
+ memcpy(dst+dO+26*dstLineSize, src+sO+26*tileWBytes, tileWBytes);
+ memcpy(dst+dO+27*dstLineSize, src+sO+27*tileWBytes, tileWBytes);
+ memcpy(dst+dO+28*dstLineSize, src+sO+28*tileWBytes, tileWBytes);
+ memcpy(dst+dO+29*dstLineSize, src+sO+29*tileWBytes, tileWBytes);
+ memcpy(dst+dO+30*dstLineSize, src+sO+30*tileWBytes, tileWBytes);
+ memcpy(dst+dO+31*dstLineSize, src+sO+31*tileWBytes, tileWBytes);
+
+ dX += tileW;
+ if (dX >= w) {
+ dX = 0;
+ dY += tileH;
+ }
+ sO = sO + tileW*tileH*pixBytes;
+ cTL += tileH;
+ }
+}
+
+
+/*
+ * Generic detile logic
+ */
+
+/*
+ * Direction Change Entry
+ * Used to specify the tile walking of subtiles within a tile.
+ */
+/**
+ * Settings for Intel Tile-Yf framebuffer layout.
+ * May need to swap the 4 pixel wide subtile, have to check doc bit more
+ */
+const int tyfBytesPerPixel = 4;
+const int tyfSubTileWidth = 4;
+const int tyfSubTileHeight = 8;
+const int tyfSubTileWidthBytes = tyfSubTileWidth*tyfBytesPerPixel; //16
+const int tyfTileWidth = 32;
+const int tyfTileHeight = 32;
+const int tyfNumDirChanges = 6;
+struct dirChange tyfDirChanges[] = { {8, 4, 0}, {16, -4, 8}, {32, 4, -8}, {64, -12, 8 }, {128, 4, -24}, {256, 4, -24} };
+
+/**
+ * Setting for Intel Tile-X framebuffer layout
+ */
+const int txBytesPerPixel = 4;
+const int txSubTileWidth = 128;
+const int txSubTileHeight = 8;
+const int txSubTileWidthBytes = txSubTileWidth*txBytesPerPixel; //512
+const int txTileWidth = 128;
+const int txTileHeight = 8;
+const int txNumDirChanges = 1;
+struct dirChange txDirChanges[] = { {8, 128, 0} };
+
+/**
+ * Setting for Intel Tile-Y framebuffer layout
+ * Even thou a simple generic detiling logic doesnt require the
+ * dummy 256 posOffset entry. The pseudo parallel detiling based
+ * opti logic requires to know about the Tile boundry.
+ */
+const int tyBytesPerPixel = 4;
+const int tySubTileWidth = 4;
+const int tySubTileHeight = 32;
+const int tySubTileWidthBytes = tySubTileWidth*tyBytesPerPixel; //16
+const int tyTileWidth = 32;
+const int tyTileHeight = 32;
+const int tyNumDirChanges = 2;
+struct dirChange tyDirChanges[] = { {32, 4, 0}, {256, 4, 0} };
+
+
+void detile_generic_simple(int w, int h,
+ uint8_t *dst, int dstLineSize,
+ const uint8_t *src, int srcLineSize,
+ int bytesPerPixel,
+ int subTileWidth, int subTileHeight, int subTileWidthBytes,
+ int tileWidth, int tileHeight,
+ int numDirChanges, struct dirChange *dirChanges)
+{
+
+ if (w*bytesPerPixel != srcLineSize) {
+ fprintf(stderr,"DBUG:fbdetile:generic: w%dxh%d, dL%d, sL%d\n", w, h, dstLineSize, srcLineSize);
+ fprintf(stderr,"ERRR:fbdetile:generic: dont support LineSize | Pitch going beyond width\n");
+ }
+ int sO = 0;
+ int dX = 0;
+ int dY = 0;
+ int nSTLines = (w*h)/subTileWidth; // numSubTileLines
+ int cSTL = 0; // curSubTileLine
+ while (cSTL < nSTLines) {
+ int dO = dY*dstLineSize + dX*bytesPerPixel;
+#ifdef DEBUG_FBTILE
+ fprintf(stderr,"DBUG:fbdetile:generic: dX%d dY%d, sO%d, dO%d\n", dX, dY, sO, dO);
+#endif
+
+ for (int k = 0; k < subTileHeight; k++) {
+ memcpy(dst+dO+k*dstLineSize, src+sO+k*subTileWidthBytes, subTileWidthBytes);
+ }
+ sO = sO + subTileHeight*subTileWidthBytes;
+
+ cSTL += subTileHeight;
+ for (int i=numDirChanges-1; i>=0; i--) {
+ if ((cSTL%dirChanges[i].posOffset) == 0) {
+ dX += dirChanges[i].xDelta;
+ dY += dirChanges[i].yDelta;
+ break;
+ }
+ }
+ if (dX >= w) {
+ dX = 0;
+ dY += tileHeight;
+ }
+ }
+}
+
+
+void detile_generic_opti(int w, int h,
+ uint8_t *dst, int dstLineSize,
+ const uint8_t *src, int srcLineSize,
+ int bytesPerPixel,
+ int subTileWidth, int subTileHeight, int subTileWidthBytes,
+ int tileWidth, int tileHeight,
+ int numDirChanges, struct dirChange *dirChanges)
+{
+ int parallel = 1;
+
+ if (w*bytesPerPixel != srcLineSize) {
+ fprintf(stderr,"DBUG:fbdetile:generic: w%dxh%d, dL%d, sL%d\n", w, h, dstLineSize, srcLineSize);
+ fprintf(stderr,"ERRR:fbdetile:generic: dont support LineSize | Pitch going beyond width\n");
+ }
+ if (w%tileWidth != 0) {
+ fprintf(stderr,"DBUG:fbdetile:generic:NotSupported:NonMultWidth: width%d, tileWidth%d\n", w, tileWidth);
+ }
+ int sO = 0;
+ int sOPrev = 0;
+ int dX = 0;
+ int dY = 0;
+ int nSTLines = (w*h)/subTileWidth;
+ //int nSTLinesInATile = (tileWidth*tileHeight)/subTileWidth;
+ int nTilesInARow = w/tileWidth;
+ for (parallel=8; parallel>0; parallel--) {
+ if (nTilesInARow%parallel == 0)
+ break;
+ }
+ int cSTL = 0;
+ int curTileInRow = 0;
+ while (cSTL < nSTLines) {
+ int dO = dY*dstLineSize + dX*bytesPerPixel;
+#ifdef DEBUG_FBTILE
+ fprintf(stderr,"DBUG:fbdetile:generic: dX%d dY%d, sO%d, dO%d\n", dX, dY, sO, dO);
+#endif
+
+ // As most tiling layouts have a minimum subtile of 4x4, if I remember correctly,
+ // so this loop has been unrolled to be multiples of 4, and speed up a bit.
+ // However tiling involving 3x3 or 2x2 wont be handlable. Use detile_generic_simple
+ // for such tile layouts.
+ // Detile parallely to a limited extent. To avoid any cache set-associativity and or
+ // limited cache based thrashing, keep it spacially and inturn temporaly small at one level.
+ for (int k = 0; k < subTileHeight; k+=4) {
+ for (int p = 0; p < parallel; p++) {
+ int pSrcOffset = p*tileWidth*tileHeight*bytesPerPixel;
+ int pDstOffset = p*tileWidth*bytesPerPixel;
+ memcpy(dst+dO+k*dstLineSize+pDstOffset, src+sO+k*subTileWidthBytes+pSrcOffset, subTileWidthBytes);
+ memcpy(dst+dO+(k+1)*dstLineSize+pDstOffset, src+sO+(k+1)*subTileWidthBytes+pSrcOffset, subTileWidthBytes);
+ memcpy(dst+dO+(k+2)*dstLineSize+pDstOffset, src+sO+(k+2)*subTileWidthBytes+pSrcOffset, subTileWidthBytes);
+ memcpy(dst+dO+(k+3)*dstLineSize+pDstOffset, src+sO+(k+3)*subTileWidthBytes+pSrcOffset, subTileWidthBytes);
+ }
+ }
+ sO = sO + subTileHeight*subTileWidthBytes;
+
+ cSTL += subTileHeight;
+ for (int i=numDirChanges-1; i>=0; i--) {
+ if ((cSTL%dirChanges[i].posOffset) == 0) {
+ if (i == numDirChanges-1) {
+ curTileInRow += parallel;
+ dX = curTileInRow*tileWidth;
+ sO = sOPrev + tileWidth*tileHeight*bytesPerPixel*(parallel);
+ sOPrev = sO;
+ } else {
+ dX += dirChanges[i].xDelta;
+ }
+ dY += dirChanges[i].yDelta;
+ break;
+ }
+ }
+ if (dX >= w) {
+ dX = 0;
+ curTileInRow = 0;
+ dY += tileHeight;
+ if (dY >= h) {
+ break;
+ }
+ }
+ }
+}
+
+
+void detile_this(int mode, uint64_t arg1,
+ int w, int h,
+ uint8_t *dst, int dstLineSize,
+ uint8_t *src, int srcLineSize,
+ int bytesPerPixel)
+{
+ if (mode == TILE_NONE) {
+ return;
+ }
+ if (mode == TILE_AUTO) {
+ mode = fbtilemode_from_formatmodifier(arg1);
+ }
+
+ if (mode == TILE_INTELX) {
+ detile_intelx(w, h, dst, dstLineSize, src, srcLineSize);
+ } else if (mode == TILE_INTELY) {
+ detile_intely(w, h, dst, dstLineSize, src, srcLineSize);
+ } else if (mode == TILE_INTELYF) {
+ detile_generic(w, h, dst, dstLineSize, src, srcLineSize,
+ tyfBytesPerPixel, tyfSubTileWidth, tyfSubTileHeight, tyfSubTileWidthBytes,
+ tyfTileWidth, tyfTileHeight,
+ tyfNumDirChanges, tyfDirChanges);
+ } else if (mode == TILE_INTELGX) {
+ detile_generic(w, h, dst, dstLineSize, src, srcLineSize,
+ txBytesPerPixel, txSubTileWidth, txSubTileHeight, txSubTileWidthBytes,
+ txTileWidth, txTileHeight,
+ txNumDirChanges, txDirChanges);
+ } else if (mode == TILE_INTELGY) {
+ detile_generic(w, h, dst, dstLineSize, src, srcLineSize,
+ tyBytesPerPixel, tySubTileWidth, tySubTileHeight, tySubTileWidthBytes,
+ tyTileWidth, tyTileHeight,
+ tyNumDirChanges, tyDirChanges);
+ } else if (mode == TILE_NONE_END) {
+ fprintf(stderr, "WARN:fbtile:detile_this:TILE_AUTO: invalid or unsupported format_modifier:%llx\n",arg1);
+ }
+}
+
+
+// vim: set expandtab sts=4: //
diff --git a/libavutil/fbtile.h b/libavutil/fbtile.h
new file mode 100644
index 0000000000..c66f641f70
--- /dev/null
+++ b/libavutil/fbtile.h
@@ -0,0 +1,213 @@
+/*
+ * CPU based Framebuffer Tile DeTile logic
+ * Copyright (c) 2020 C Hanish Menon <HanishKVC>
+ *
+ * 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
+ */
+
+#ifndef AVUTIL_FBTILE_H
+#define AVUTIL_FBTILE_H
+
+#include <stdio.h>
+#include <stdint.h>
+
+/**
+ * @file
+ * @brief CPU based Framebuffer tiler detiler
+ * @author C Hanish Menon <HanishKVC>
+ * @{
+ */
+
+
+enum FBTileMode {
+ TILE_NONE,
+ TILE_AUTO,
+ TILE_INTELX,
+ TILE_INTELY,
+ TILE_INTELYF,
+ TILE_INTELGX,
+ TILE_INTELGY,
+ TILE_NONE_END,
+};
+
+
+/**
+ * Map from formatmodifier to fbtile's internal mode.
+ *
+ * @param formatModifier the format_modifier to map
+ * @return the fbtile's equivalent internal mode
+ */
+#undef DEBUG_FBTILE_FORMATMODIFIER_MAPPING
+int fbtilemode_from_formatmodifier(uint64_t formatModifier);
+
+
+/**
+ * Detile legacy intel tile-x layout into linear layout.
+ *
+ * @param w width of the image
+ * @param h height of the image
+ * @param dst the destination image buffer
+ * @param dstLineSize the size of each row in dst image, in bytes
+ * @param src the source image buffer
+ * @param srcLineSize the size of each row in src image, in bytes
+ */
+void detile_intelx(int w, int h,
+ uint8_t *dst, int dstLineSize,
+ const uint8_t *src, int srcLineSize);
+
+
+/**
+ * Detile legacy intel tile-y layout into linear layout.
+ *
+ * @param w width of the image
+ * @param h height of the image
+ * @param dst the destination image buffer
+ * @param dstLineSize the size of each row in dst image, in bytes
+ * @param src the source image buffer
+ * @param srcLineSize the size of each row in src image, in bytes
+ */
+void detile_intely(int w, int h,
+ uint8_t *dst, int dstLineSize,
+ const uint8_t *src, int srcLineSize);
+
+
+/**
+ * Generic Logic.
+ */
+
+/*
+ * Direction Change Entry
+ * Used to specify the tile walking of subtiles within a tile.
+ */
+struct dirChange {
+ int posOffset;
+ int xDelta;
+ int yDelta;
+};
+/**
+ * Settings for Intel Tile-Yf framebuffer layout.
+ * May need to swap the 4 pixel wide subtile, have to check doc bit more
+ */
+extern const int tyfBytesPerPixel;
+extern const int tyfSubTileWidth;
+extern const int tyfSubTileHeight;
+extern const int tyfSubTileWidthBytes;
+extern const int tyfTileWidth;
+extern const int tyfTileHeight;
+extern const int tyfNumDirChanges;
+extern struct dirChange tyfDirChanges[];
+/**
+ * Setting for Intel Tile-X framebuffer layout
+ */
+extern const int txBytesPerPixel;
+extern const int txSubTileWidth;
+extern const int txSubTileHeight;
+extern const int txSubTileWidthBytes;
+extern const int txTileWidth;
+extern const int txTileHeight;
+extern const int txNumDirChanges;
+extern struct dirChange txDirChanges[];
+/**
+ * Setting for Intel Tile-Y framebuffer layout
+ * Even thou a simple generic detiling logic doesnt require the
+ * dummy 256 posOffset entry. The pseudo parallel detiling based
+ * opti logic requires to know about the Tile boundry.
+ */
+extern const int tyBytesPerPixel;
+extern const int tySubTileWidth;
+extern const int tySubTileHeight;
+extern const int tySubTileWidthBytes;
+extern const int tyTileWidth;
+extern const int tyTileHeight;
+extern const int tyNumDirChanges;
+extern struct dirChange tyDirChanges[];
+
+/**
+ * Generic Logic to Detile into linear layout.
+ *
+ * @param w width of the image
+ * @param h height of the image
+ * @param dst the destination image buffer
+ * @param dstLineSize the size of each row in dst image, in bytes
+ * @param src the source image buffer
+ * @param srcLineSize the size of each row in src image, in bytes
+ * @param bytesPerPixel the bytes per pixel for the image
+ * @param subTileWidth the width of subtile within the tile, in pixels
+ * @param subTileHeight the height of subtile within the tile, in pixels
+ * @param subTileWidthBytes the width of subtile within the tile, in bytes
+ * @param tileWidth the width of the tile, in pixels
+ * @param tileHeight the height of the tile, in pixels
+ */
+
+
+/**
+ * Generic detile simple version, which is fine-grained.
+ */
+void detile_generic_simple(int w, int h,
+ uint8_t *dst, int dstLineSize,
+ const uint8_t *src, int srcLineSize,
+ int bytesPerPixel,
+ int subTileWidth, int subTileHeight, int subTileWidthBytes,
+ int tileWidth, int tileHeight,
+ int numDirChanges, struct dirChange *dirChanges);
+
+
+/**
+ * Generic detile optimised version, minimum subtile supported 4x4.
+ */
+void detile_generic_opti(int w, int h,
+ uint8_t *dst, int dstLineSize,
+ const uint8_t *src, int srcLineSize,
+ int bytesPerPixel,
+ int subTileWidth, int subTileHeight, int subTileWidthBytes,
+ int tileWidth, int tileHeight,
+ int numDirChanges, struct dirChange *dirChanges);
+
+
+#ifdef DETILE_GENERIC_OPTI
+#define detile_generic detile_generic_opti
+#else
+#define detile_generic detile_generic_simple
+#endif
+
+
+/**
+ * detile demuxer.
+ *
+ * @param mode the fbtile mode based detiling to call
+ * @param arg1 the format_modifier, in case mode is TILE_AUTO
+ * @param w width of the image
+ * @param h height of the image
+ * @param dst the destination image buffer
+ * @param dstLineSize the size of each row in dst image, in bytes
+ * @param src the source image buffer
+ * @param srcLineSize the size of each row in src image, in bytes
+ * @param bytesPerPixel the bytes per pixel for the image
+ */
+void detile_this(int mode, uint64_t arg1,
+ int w, int h,
+ uint8_t *dst, int dstLineSize,
+ uint8_t *src, int srcLineSize,
+ int bytesPerPixel);
+
+
+/**
+ * @}
+ */
+
+#endif /* AVUTIL_FBTILE_H */
+// vim: set expandtab sts=4: //
--
2.25.1
More information about the ffmpeg-devel
mailing list