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ffmpeg/libavfilter/vf_scale_vaapi.c
Mark Thompson e3fb74f7f9 lavfi: Always propagate hw_frames_ctx through links 
Also adds a new flag to mark filters which are aware of hwframes and
will perform this task themselves, and marks all appropriate filters
with this flag.

This is required to allow software-mapped hardware frames to work,
because we need to have the frames context available for any later
mapping operation in the filter graph.

The output from the filter graph should only propagate further to an
encoder if the hardware format actually matches the visible format
(mapped frames are valid here and have an hw_frames_ctx, but this
should not be given to the encoder as its hardware context).
2016-11-02 20:29:05 +00:00

468 lines
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/*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
#include <va/va.h>
#include <va/va_vpp.h>
#include "libavutil/avassert.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_vaapi.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
typedef struct ScaleVAAPIContext {
const AVClass *class;
AVVAAPIDeviceContext *hwctx;
AVBufferRef *device_ref;
int valid_ids;
VAConfigID va_config;
VAContextID va_context;
AVBufferRef *input_frames_ref;
AVHWFramesContext *input_frames;
AVBufferRef *output_frames_ref;
AVHWFramesContext *output_frames;
char *output_format_string;
enum AVPixelFormat output_format;
int output_width;
int output_height;
} ScaleVAAPIContext;
static int scale_vaapi_query_formats(AVFilterContext *avctx)
{
enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_VAAPI, AV_PIX_FMT_NONE,
};
ff_formats_ref(ff_make_format_list(pix_fmts),
&avctx->inputs[0]->out_formats);
ff_formats_ref(ff_make_format_list(pix_fmts),
&avctx->outputs[0]->in_formats);
return 0;
}
static int scale_vaapi_pipeline_uninit(ScaleVAAPIContext *ctx)
{
if (ctx->va_context != VA_INVALID_ID) {
vaDestroyContext(ctx->hwctx->display, ctx->va_context);
ctx->va_context = VA_INVALID_ID;
}
if (ctx->va_config != VA_INVALID_ID) {
vaDestroyConfig(ctx->hwctx->display, ctx->va_config);
ctx->va_config = VA_INVALID_ID;
}
av_buffer_unref(&ctx->output_frames_ref);
av_buffer_unref(&ctx->device_ref);
ctx->hwctx = 0;
return 0;
}
static int scale_vaapi_config_input(AVFilterLink *inlink)
{
AVFilterContext *avctx = inlink->dst;
ScaleVAAPIContext *ctx = avctx->priv;
scale_vaapi_pipeline_uninit(ctx);
if (!inlink->hw_frames_ctx) {
av_log(avctx, AV_LOG_ERROR, "A hardware frames reference is "
"required to associate the processing device.\n");
return AVERROR(EINVAL);
}
ctx->input_frames_ref = av_buffer_ref(inlink->hw_frames_ctx);
ctx->input_frames = (AVHWFramesContext*)ctx->input_frames_ref->data;
return 0;
}
static int scale_vaapi_config_output(AVFilterLink *outlink)
{
AVFilterContext *avctx = outlink->src;
ScaleVAAPIContext *ctx = avctx->priv;
AVVAAPIHWConfig *hwconfig = NULL;
AVHWFramesConstraints *constraints = NULL;
AVVAAPIFramesContext *va_frames;
VAStatus vas;
int err, i;
scale_vaapi_pipeline_uninit(ctx);
ctx->device_ref = av_buffer_ref(ctx->input_frames->device_ref);
ctx->hwctx = ((AVHWDeviceContext*)ctx->device_ref->data)->hwctx;
av_assert0(ctx->va_config == VA_INVALID_ID);
vas = vaCreateConfig(ctx->hwctx->display, VAProfileNone,
VAEntrypointVideoProc, 0, 0, &ctx->va_config);
if (vas != VA_STATUS_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Failed to create processing pipeline "
"config: %d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
hwconfig = av_hwdevice_hwconfig_alloc(ctx->device_ref);
if (!hwconfig) {
err = AVERROR(ENOMEM);
goto fail;
}
hwconfig->config_id = ctx->va_config;
constraints = av_hwdevice_get_hwframe_constraints(ctx->device_ref,
hwconfig);
if (!constraints) {
err = AVERROR(ENOMEM);
goto fail;
}
if (ctx->output_format == AV_PIX_FMT_NONE)
ctx->output_format = ctx->input_frames->sw_format;
if (constraints->valid_sw_formats) {
for (i = 0; constraints->valid_sw_formats[i] != AV_PIX_FMT_NONE; i++) {
if (ctx->output_format == constraints->valid_sw_formats[i])
break;
}
if (constraints->valid_sw_formats[i] == AV_PIX_FMT_NONE) {
av_log(ctx, AV_LOG_ERROR, "Hardware does not support output "
"format %s.\n", av_get_pix_fmt_name(ctx->output_format));
err = AVERROR(EINVAL);
goto fail;
}
}
if (ctx->output_width < constraints->min_width ||
ctx->output_height < constraints->min_height ||
ctx->output_width > constraints->max_width ||
ctx->output_height > constraints->max_height) {
av_log(ctx, AV_LOG_ERROR, "Hardware does not support scaling to "
"size %dx%d (constraints: width %d-%d height %d-%d).\n",
ctx->output_width, ctx->output_height,
constraints->min_width, constraints->max_width,
constraints->min_height, constraints->max_height);
err = AVERROR(EINVAL);
goto fail;
}
ctx->output_frames_ref = av_hwframe_ctx_alloc(ctx->device_ref);
if (!ctx->output_frames_ref) {
av_log(ctx, AV_LOG_ERROR, "Failed to create HW frame context "
"for output.\n");
err = AVERROR(ENOMEM);
goto fail;
}
ctx->output_frames = (AVHWFramesContext*)ctx->output_frames_ref->data;
ctx->output_frames->format = AV_PIX_FMT_VAAPI;
ctx->output_frames->sw_format = ctx->output_format;
ctx->output_frames->width = ctx->output_width;
ctx->output_frames->height = ctx->output_height;
// The number of output frames we need is determined by what follows
// the filter. If it's an encoder with complex frame reference
// structures then this could be very high.
ctx->output_frames->initial_pool_size = 10;
err = av_hwframe_ctx_init(ctx->output_frames_ref);
if (err < 0) {
av_log(ctx, AV_LOG_ERROR, "Failed to initialise VAAPI frame "
"context for output: %d\n", err);
goto fail;
}
va_frames = ctx->output_frames->hwctx;
av_assert0(ctx->va_context == VA_INVALID_ID);
vas = vaCreateContext(ctx->hwctx->display, ctx->va_config,
ctx->output_width, ctx->output_height,
VA_PROGRESSIVE,
va_frames->surface_ids, va_frames->nb_surfaces,
&ctx->va_context);
if (vas != VA_STATUS_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Failed to create processing pipeline "
"context: %d (%s).\n", vas, vaErrorStr(vas));
return AVERROR(EIO);
}
outlink->w = ctx->output_width;
outlink->h = ctx->output_height;
outlink->hw_frames_ctx = av_buffer_ref(ctx->output_frames_ref);
if (!outlink->hw_frames_ctx) {
err = AVERROR(ENOMEM);
goto fail;
}
av_freep(&hwconfig);
av_hwframe_constraints_free(&constraints);
return 0;
fail:
av_buffer_unref(&ctx->output_frames_ref);
av_freep(&hwconfig);
av_hwframe_constraints_free(&constraints);
return err;
}
static int vaapi_proc_colour_standard(enum AVColorSpace av_cs)
{
switch(av_cs) {
#define CS(av, va) case AVCOL_SPC_ ## av: return VAProcColorStandard ## va;
CS(BT709, BT709);
CS(BT470BG, BT601);
CS(SMPTE170M, SMPTE170M);
CS(SMPTE240M, SMPTE240M);
#undef CS
default:
return VAProcColorStandardNone;
}
}
static int scale_vaapi_filter_frame(AVFilterLink *inlink, AVFrame *input_frame)
{
AVFilterContext *avctx = inlink->dst;
AVFilterLink *outlink = avctx->outputs[0];
ScaleVAAPIContext *ctx = avctx->priv;
AVFrame *output_frame = NULL;
VASurfaceID input_surface, output_surface;
VAProcPipelineParameterBuffer params;
VABufferID params_id;
VARectangle input_region;
VAStatus vas;
int err;
av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
av_get_pix_fmt_name(input_frame->format),
input_frame->width, input_frame->height, input_frame->pts);
if (ctx->va_context == VA_INVALID_ID)
return AVERROR(EINVAL);
input_surface = (VASurfaceID)(uintptr_t)input_frame->data[3];
av_log(ctx, AV_LOG_DEBUG, "Using surface %#x for scale input.\n",
input_surface);
output_frame = ff_get_video_buffer(outlink, ctx->output_width,
ctx->output_height);
if (!output_frame) {
err = AVERROR(ENOMEM);
goto fail;
}
output_surface = (VASurfaceID)(uintptr_t)output_frame->data[3];
av_log(ctx, AV_LOG_DEBUG, "Using surface %#x for scale output.\n",
output_surface);
memset(&params, 0, sizeof(params));
// If there were top/left cropping, it could be taken into
// account here.
input_region = (VARectangle) {
.x = 0,
.y = 0,
.width = input_frame->width,
.height = input_frame->height,
};
params.surface = input_surface;
params.surface_region = &input_region;
params.surface_color_standard =
vaapi_proc_colour_standard(input_frame->colorspace);
params.output_region = 0;
params.output_background_color = 0xff000000;
params.output_color_standard = params.surface_color_standard;
params.pipeline_flags = 0;
params.filter_flags = VA_FILTER_SCALING_HQ;
vas = vaBeginPicture(ctx->hwctx->display,
ctx->va_context, output_surface);
if (vas != VA_STATUS_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Failed to attach new picture: "
"%d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail;
}
vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
VAProcPipelineParameterBufferType,
sizeof(params), 1, &params, &params_id);
if (vas != VA_STATUS_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Failed to create parameter buffer: "
"%d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail_after_begin;
}
av_log(ctx, AV_LOG_DEBUG, "Pipeline parameter buffer is %#x.\n",
params_id);
vas = vaRenderPicture(ctx->hwctx->display, ctx->va_context,
&params_id, 1);
if (vas != VA_STATUS_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Failed to render parameter buffer: "
"%d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail_after_begin;
}
vas = vaEndPicture(ctx->hwctx->display, ctx->va_context);
if (vas != VA_STATUS_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Failed to start picture processing: "
"%d (%s).\n", vas, vaErrorStr(vas));
err = AVERROR(EIO);
goto fail_after_render;
}
if (ctx->hwctx->driver_quirks &
AV_VAAPI_DRIVER_QUIRK_RENDER_PARAM_BUFFERS) {
vas = vaDestroyBuffer(ctx->hwctx->display, params_id);
if (vas != VA_STATUS_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Failed to free parameter buffer: "
"%d (%s).\n", vas, vaErrorStr(vas));
// And ignore.
}
}
av_frame_copy_props(output_frame, input_frame);
av_frame_free(&input_frame);
av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
av_get_pix_fmt_name(output_frame->format),
output_frame->width, output_frame->height, output_frame->pts);
return ff_filter_frame(outlink, output_frame);
// We want to make sure that if vaBeginPicture has been called, we also
// call vaRenderPicture and vaEndPicture. These calls may well fail or
// do something else nasty, but once we're in this failure case there
// isn't much else we can do.
fail_after_begin:
vaRenderPicture(ctx->hwctx->display, ctx->va_context, &params_id, 1);
fail_after_render:
vaEndPicture(ctx->hwctx->display, ctx->va_context);
fail:
av_frame_free(&input_frame);
av_frame_free(&output_frame);
return err;
}
static av_cold int scale_vaapi_init(AVFilterContext *avctx)
{
ScaleVAAPIContext *ctx = avctx->priv;
ctx->va_config = VA_INVALID_ID;
ctx->va_context = VA_INVALID_ID;
ctx->valid_ids = 1;
if (ctx->output_format_string) {
ctx->output_format = av_get_pix_fmt(ctx->output_format_string);
if (ctx->output_format == AV_PIX_FMT_NONE) {
av_log(ctx, AV_LOG_ERROR, "Invalid output format.\n");
return AVERROR(EINVAL);
}
} else {
// Use the input format once that is configured.
ctx->output_format = AV_PIX_FMT_NONE;
}
return 0;
}
static av_cold void scale_vaapi_uninit(AVFilterContext *avctx)
{
ScaleVAAPIContext *ctx = avctx->priv;
if (ctx->valid_ids)
scale_vaapi_pipeline_uninit(ctx);
av_buffer_unref(&ctx->input_frames_ref);
av_buffer_unref(&ctx->output_frames_ref);
av_buffer_unref(&ctx->device_ref);
}
#define OFFSET(x) offsetof(ScaleVAAPIContext, x)
#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM)
static const AVOption scale_vaapi_options[] = {
{ "w", "Output video width",
OFFSET(output_width), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, .flags = FLAGS },
{ "h", "Output video height",
OFFSET(output_height), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, .flags = FLAGS },
{ "format", "Output video format (software format of hardware frames)",
OFFSET(output_format_string), AV_OPT_TYPE_STRING, .flags = FLAGS },
{ NULL },
};
static const AVClass scale_vaapi_class = {
.class_name = "scale_vaapi",
.item_name = av_default_item_name,
.option = scale_vaapi_options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVFilterPad scale_vaapi_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = &scale_vaapi_filter_frame,
.config_props = &scale_vaapi_config_input,
},
{ NULL }
};
static const AVFilterPad scale_vaapi_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = &scale_vaapi_config_output,
},
{ NULL }
};
AVFilter ff_vf_scale_vaapi = {
.name = "scale_vaapi",
.description = NULL_IF_CONFIG_SMALL("Scale to/from VAAPI surfaces."),
.priv_size = sizeof(ScaleVAAPIContext),
.init = &scale_vaapi_init,
.uninit = &scale_vaapi_uninit,
.query_formats = &scale_vaapi_query_formats,
.inputs = scale_vaapi_inputs,
.outputs = scale_vaapi_outputs,
.priv_class = &scale_vaapi_class,
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};
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