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lavf: make overlay_qsv work based on framesync 

The existing version which was cherry-picked from Libav does not work
with FFmpeg framework, because ff_request_frame() was totally
different between Libav (recursive) and FFmpeg (non-recursive).
The existing overlay_qsv implementation depends on the recursive version
of ff_request_frame to trigger immediate call to request_frame() on input pad.
But this has been removed in FFmpeg since "lavfi: make request_frame() non-recursive."
Now that we have handy framesync support in FFmpeg, so I make it work
based on framesync. Some other fixing which is also needed to make
overlay_qsv work are put in a separate patch.

Signed-off-by: Ruiling Song <ruiling.song@intel.com>
tags/n4.1
Ruiling Song Mark Thompson 8 years ago
parent
21da248b5f
commit
f3341a0452
2 changed files with 78 additions and 137 deletions
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  1. +1
    -1
      libavfilter/Makefile
  2. +77
    -136
      libavfilter/vf_overlay_qsv.c

+ 1
- 1
libavfilter/Makefile View File

@@ -270,7 +270,7 @@ OBJS-$(CONFIG_OSCILLOSCOPE_FILTER) += vf_datascope.o
OBJS-$(CONFIG_OVERLAY_FILTER) += vf_overlay.o framesync.o
OBJS-$(CONFIG_OVERLAY_OPENCL_FILTER) += vf_overlay_opencl.o opencl.o \
opencl/overlay.o framesync.o
OBJS-$(CONFIG_OVERLAY_QSV_FILTER) += vf_overlay_qsv.o
OBJS-$(CONFIG_OVERLAY_QSV_FILTER) += vf_overlay_qsv.o framesync.o
OBJS-$(CONFIG_OWDENOISE_FILTER) += vf_owdenoise.o
OBJS-$(CONFIG_PAD_FILTER) += vf_pad.o
OBJS-$(CONFIG_PALETTEGEN_FILTER) += vf_palettegen.o


+ 77
- 136
libavfilter/vf_overlay_qsv.c View File

@@ -36,6 +36,7 @@
#include "formats.h"
#include "video.h"

#include "framesync.h"
#include "qsvvpp.h"

#define MAIN 0
@@ -56,14 +57,10 @@ enum var_name {
VAR_VARS_NB
};

enum EOFAction {
EOF_ACTION_REPEAT,
EOF_ACTION_ENDALL
};

typedef struct QSVOverlayContext {
const AVClass *class;

FFFrameSync fs;
QSVVPPContext *qsv;
QSVVPPParam qsv_param;
mfxExtVPPComposite comp_conf;
@@ -72,10 +69,6 @@ typedef struct QSVOverlayContext {
char *overlay_ox, *overlay_oy, *overlay_ow, *overlay_oh;
uint16_t overlay_alpha, overlay_pixel_alpha;

enum EOFAction eof_action; /* action to take on EOF from source */

AVFrame *main;
AVFrame *over_prev, *over_next;
} QSVOverlayContext;

static const char *const var_names[] = {
@@ -90,20 +83,25 @@ static const char *const var_names[] = {
NULL
};

static const AVOption options[] = {
static const AVOption overlay_qsv_options[] = {
{ "x", "Overlay x position", OFFSET(overlay_ox), AV_OPT_TYPE_STRING, { .str="0"}, 0, 255, .flags = FLAGS},
{ "y", "Overlay y position", OFFSET(overlay_oy), AV_OPT_TYPE_STRING, { .str="0"}, 0, 255, .flags = FLAGS},
{ "w", "Overlay width", OFFSET(overlay_ow), AV_OPT_TYPE_STRING, { .str="overlay_iw"}, 0, 255, .flags = FLAGS},
{ "h", "Overlay height", OFFSET(overlay_oh), AV_OPT_TYPE_STRING, { .str="overlay_ih*w/overlay_iw"}, 0, 255, .flags = FLAGS},
{ "alpha", "Overlay global alpha", OFFSET(overlay_alpha), AV_OPT_TYPE_INT, { .i64 = 255}, 0, 255, .flags = FLAGS},
{ "eof_action", "Action to take when encountering EOF from secondary input ",
OFFSET(eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_REPEAT },
EOF_ACTION_REPEAT, EOF_ACTION_ENDALL, .flags = FLAGS, "eof_action" },
{ "repeat", "Repeat the previous frame.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_REPEAT }, .flags = FLAGS, "eof_action" },
{ "endall", "End both streams.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ENDALL }, .flags = FLAGS, "eof_action" },
OFFSET(fs.opt_eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_REPEAT },
EOF_ACTION_REPEAT, EOF_ACTION_PASS, .flags = FLAGS, "eof_action" },
{ "repeat", "Repeat the previous frame.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_REPEAT }, .flags = FLAGS, "eof_action" },
{ "endall", "End both streams.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ENDALL }, .flags = FLAGS, "eof_action" },
{ "pass", "Pass through the main input.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_PASS }, .flags = FLAGS, "eof_action" },
{ "shortest", "force termination when the shortest input terminates", OFFSET(fs.opt_shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "repeatlast", "repeat overlay of the last overlay frame", OFFSET(fs.opt_repeatlast), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
{ NULL }
};

FRAMESYNC_DEFINE_CLASS(overlay_qsv, QSVOverlayContext, fs);

static int eval_expr(AVFilterContext *ctx)
{
QSVOverlayContext *vpp = ctx->priv;
@@ -230,12 +228,53 @@ static int config_overlay_input(AVFilterLink *inlink)
return 0;
}

static int process_frame(FFFrameSync *fs)
{
AVFilterContext *ctx = fs->parent;
QSVOverlayContext *s = fs->opaque;
AVFrame *frame = NULL;
int ret = 0, i;

for (i = 0; i < ctx->nb_inputs; i++) {
ret = ff_framesync_get_frame(fs, i, &frame, 0);
if (ret == 0)
ret = ff_qsvvpp_filter_frame(s->qsv, ctx->inputs[i], frame);
if (ret < 0 && ret != AVERROR(EAGAIN))
break;
}

return ret;
}

static int init_framesync(AVFilterContext *ctx)
{
QSVOverlayContext *s = ctx->priv;
int ret, i;

s->fs.on_event = process_frame;
s->fs.opaque = s;
ret = ff_framesync_init(&s->fs, ctx, ctx->nb_inputs);
if (ret < 0)
return ret;

for (i = 0; i < ctx->nb_inputs; i++) {
FFFrameSyncIn *in = &s->fs.in[i];
in->before = EXT_STOP;
in->after = EXT_INFINITY;
in->sync = i ? 1 : 2;
in->time_base = ctx->inputs[i]->time_base;
}

return ff_framesync_configure(&s->fs);
}

static int config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
QSVOverlayContext *vpp = ctx->priv;
AVFilterLink *in0 = ctx->inputs[0];
AVFilterLink *in1 = ctx->inputs[1];
int ret;

av_log(ctx, AV_LOG_DEBUG, "Output is of %s.\n", av_get_pix_fmt_name(outlink->format));
if ((in0->format == AV_PIX_FMT_QSV && in1->format != AV_PIX_FMT_QSV) ||
@@ -257,121 +296,27 @@ static int config_output(AVFilterLink *outlink)
outlink->frame_rate = in0->frame_rate;
outlink->time_base = av_inv_q(outlink->frame_rate);

return ff_qsvvpp_create(ctx, &vpp->qsv, &vpp->qsv_param);
}

static int blend_frame(AVFilterContext *ctx, AVFrame *mpic, AVFrame *opic)
{
int ret = 0;
QSVOverlayContext *vpp = ctx->priv;
AVFrame *opic_copy = NULL;

ret = ff_qsvvpp_filter_frame(vpp->qsv, ctx->inputs[0], mpic);
if (ret == 0 || ret == AVERROR(EAGAIN)) {
/* Reference the overlay frame. Because:
* 1. ff_qsvvpp_filter_frame will take control of the given frame
* 2. We need to repeat the overlay frame when 2nd input goes into EOF
*/
opic_copy = av_frame_clone(opic);
if (!opic_copy)
return AVERROR(ENOMEM);

ret = ff_qsvvpp_filter_frame(vpp->qsv, ctx->inputs[1], opic_copy);
}

return ret;
}

static int handle_overlay_eof(AVFilterContext *ctx)
{
int ret = 0;
QSVOverlayContext *s = ctx->priv;
/* Repeat previous frame on secondary input */
if (s->over_prev && s->eof_action == EOF_ACTION_REPEAT)
ret = blend_frame(ctx, s->main, s->over_prev);
/* End both streams */
else if (s->eof_action == EOF_ACTION_ENDALL)
return AVERROR_EOF;

s->main = NULL;
ret = init_framesync(ctx);
if (ret < 0)
return ret;

return ret;
return ff_qsvvpp_create(ctx, &vpp->qsv, &vpp->qsv_param);
}

static int request_frame(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
QSVOverlayContext *s = ctx->priv;
AVRational tb_main = ctx->inputs[MAIN]->time_base;
AVRational tb_over = ctx->inputs[OVERLAY]->time_base;
int ret = 0;

/* get a frame on the main input */
if (!s->main) {
ret = ff_request_frame(ctx->inputs[MAIN]);
if (ret < 0)
return ret;
}

/* get a new frame on the overlay input, on EOF check setting 'eof_action' */
if (!s->over_next) {
ret = ff_request_frame(ctx->inputs[OVERLAY]);
if (ret == AVERROR_EOF)
return handle_overlay_eof(ctx);
else if (ret < 0)
return ret;
}

while (s->main->pts != AV_NOPTS_VALUE &&
s->over_next->pts != AV_NOPTS_VALUE &&
av_compare_ts(s->over_next->pts, tb_over, s->main->pts, tb_main) < 0) {
av_frame_free(&s->over_prev);
FFSWAP(AVFrame*, s->over_prev, s->over_next);

ret = ff_request_frame(ctx->inputs[OVERLAY]);
if (ret == AVERROR_EOF)
return handle_overlay_eof(ctx);
else if (ret < 0)
return ret;
}

if (s->main->pts == AV_NOPTS_VALUE ||
s->over_next->pts == AV_NOPTS_VALUE ||
!av_compare_ts(s->over_next->pts, tb_over, s->main->pts, tb_main)) {
ret = blend_frame(ctx, s->main, s->over_next);
av_frame_free(&s->over_prev);
FFSWAP(AVFrame*, s->over_prev, s->over_next);
} else if (s->over_prev) {
ret = blend_frame(ctx, s->main, s->over_prev);
} else {
av_frame_free(&s->main);
ret = AVERROR(EAGAIN);
}

s->main = NULL;

return ret;
}
/*
* Callback for qsvvpp
* @Note: qsvvpp composition does not generate PTS for result frame.
* so we assign the PTS from framesync to the output frame.
*/

static int filter_frame_main(AVFilterLink *inlink, AVFrame *frame)
static int filter_callback(AVFilterLink *outlink, AVFrame *frame)
{
QSVOverlayContext *s = inlink->dst->priv;

av_assert0(!s->main);
s->main = frame;

return 0;
QSVOverlayContext *s = outlink->src->priv;
frame->pts = av_rescale_q(s->fs.pts,
s->fs.time_base, outlink->time_base);
return ff_filter_frame(outlink, frame);
}

static int filter_frame_overlay(AVFilterLink *inlink, AVFrame *frame)
{
QSVOverlayContext *s = inlink->dst->priv;

av_assert0(!s->over_next);
s->over_next = frame;

return 0;
}

static int overlay_qsv_init(AVFilterContext *ctx)
{
@@ -387,7 +332,7 @@ static int overlay_qsv_init(AVFilterContext *ctx)
return AVERROR(ENOMEM);

/* initialize QSVVPP params */
vpp->qsv_param.filter_frame = NULL;
vpp->qsv_param.filter_frame = filter_callback;
vpp->qsv_param.ext_buf = av_mallocz(sizeof(*vpp->qsv_param.ext_buf));
if (!vpp->qsv_param.ext_buf)
return AVERROR(ENOMEM);
@@ -404,14 +349,18 @@ static void overlay_qsv_uninit(AVFilterContext *ctx)
{
QSVOverlayContext *vpp = ctx->priv;

av_frame_free(&vpp->main);
av_frame_free(&vpp->over_prev);
av_frame_free(&vpp->over_next);
ff_qsvvpp_free(&vpp->qsv);
ff_framesync_uninit(&vpp->fs);
av_freep(&vpp->comp_conf.InputStream);
av_freep(&vpp->qsv_param.ext_buf);
}

static int activate(AVFilterContext *ctx)
{
QSVOverlayContext *s = ctx->priv;
return ff_framesync_activate(&s->fs);
}

static int overlay_qsv_query_formats(AVFilterContext *ctx)
{
int i;
@@ -444,25 +393,16 @@ static int overlay_qsv_query_formats(AVFilterContext *ctx)
return 0;
}

static const AVClass overlay_qsv_class = {
.class_name = "overlay_qsv",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};

static const AVFilterPad overlay_qsv_inputs[] = {
{
.name = "main",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame_main,
.config_props = config_main_input,
.needs_fifo = 1,
},
{
.name = "overlay",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame_overlay,
.config_props = config_overlay_input,
.needs_fifo = 1,
},
@@ -474,7 +414,6 @@ static const AVFilterPad overlay_qsv_outputs[] = {
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_output,
.request_frame = request_frame,
},
{ NULL }
};
@@ -484,8 +423,10 @@ AVFilter ff_vf_overlay_qsv = {
.description = NULL_IF_CONFIG_SMALL("Quick Sync Video overlay."),
.priv_size = sizeof(QSVOverlayContext),
.query_formats = overlay_qsv_query_formats,
.preinit = overlay_qsv_framesync_preinit,
.init = overlay_qsv_init,
.uninit = overlay_qsv_uninit,
.activate = activate,
.inputs = overlay_qsv_inputs,
.outputs = overlay_qsv_outputs,
.priv_class = &overlay_qsv_class,


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