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-rw-r--r--libavfilter/video.c156
1 files changed, 93 insertions, 63 deletions
diff --git a/libavfilter/video.c b/libavfilter/video.c
index 4afce99fb1..d04505c854 100644
--- a/libavfilter/video.c
+++ b/libavfilter/video.c
@@ -1,24 +1,29 @@
/*
- * This file is part of Libav.
+ * Copyright 2007 Bobby Bingham
+ * Copyright Stefano Sabatini <stefasab gmail com>
+ * Copyright Vitor Sessak <vitor1001 gmail com>
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
#include <stdio.h>
+#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
@@ -26,65 +31,44 @@
#include "internal.h"
#include "video.h"
-#ifdef DEBUG
-static char *ff_get_ref_perms_string(char *buf, size_t buf_size, int perms)
-{
- snprintf(buf, buf_size, "%s%s%s%s%s%s",
- perms & AV_PERM_READ ? "r" : "",
- perms & AV_PERM_WRITE ? "w" : "",
- perms & AV_PERM_PRESERVE ? "p" : "",
- perms & AV_PERM_REUSE ? "u" : "",
- perms & AV_PERM_REUSE2 ? "U" : "",
- perms & AV_PERM_NEG_LINESIZES ? "n" : "");
- return buf;
-}
-#endif
-
-static void ff_dlog_ref(void *ctx, AVFilterBufferRef *ref, int end)
-{
- av_unused char buf[16];
- av_dlog(ctx,
- "ref[%p buf:%p refcount:%d perms:%s data:%p linesize[%d, %d, %d, %d] pts:%"PRId64" pos:%"PRId64,
- ref, ref->buf, ref->buf->refcount, ff_get_ref_perms_string(buf, sizeof(buf), ref->perms), ref->data[0],
- ref->linesize[0], ref->linesize[1], ref->linesize[2], ref->linesize[3],
- ref->pts, ref->pos);
-
- if (ref->video) {
- av_dlog(ctx, " a:%d/%d s:%dx%d i:%c iskey:%d type:%c",
- ref->video->pixel_aspect.num, ref->video->pixel_aspect.den,
- ref->video->w, ref->video->h,
- !ref->video->interlaced ? 'P' : /* Progressive */
- ref->video->top_field_first ? 'T' : 'B', /* Top / Bottom */
- ref->video->key_frame,
- av_get_picture_type_char(ref->video->pict_type));
- }
- if (ref->audio) {
- av_dlog(ctx, " cl:%"PRId64"d n:%d r:%d p:%d",
- ref->audio->channel_layout,
- ref->audio->nb_samples,
- ref->audio->sample_rate,
- ref->audio->planar);
- }
-
- av_dlog(ctx, "]%s", end ? "\n" : "");
-}
-
AVFilterBufferRef *ff_null_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
{
return ff_get_video_buffer(link->dst->outputs[0], perms, w, h);
}
-/* TODO: set the buffer's priv member to a context structure for the whole
- * filter chain. This will allow for a buffer pool instead of the constant
- * alloc & free cycle currently implemented. */
AVFilterBufferRef *ff_default_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
{
int linesize[4];
uint8_t *data[4];
+ int i;
AVFilterBufferRef *picref = NULL;
+ AVFilterPool *pool = link->pool;
+
+ if (pool) {
+ for (i = 0; i < POOL_SIZE; i++) {
+ picref = pool->pic[i];
+ if (picref && picref->buf->format == link->format && picref->buf->w == w && picref->buf->h == h) {
+ AVFilterBuffer *pic = picref->buf;
+ pool->pic[i] = NULL;
+ pool->count--;
+ picref->video->w = w;
+ picref->video->h = h;
+ picref->perms = perms | AV_PERM_READ;
+ picref->format = link->format;
+ pic->refcount = 1;
+ memcpy(picref->data, pic->data, sizeof(picref->data));
+ memcpy(picref->linesize, pic->linesize, sizeof(picref->linesize));
+ pool->refcount++;
+ return picref;
+ }
+ }
+ } else {
+ pool = link->pool = av_mallocz(sizeof(AVFilterPool));
+ pool->refcount = 1;
+ }
- // +2 is needed for swscaler, +16 to be SIMD-friendly
- if (av_image_alloc(data, linesize, w, h, link->format, 16) < 0)
+ // align: +2 is needed for swscaler, +16 to be SIMD-friendly
+ if ((i = av_image_alloc(data, linesize, w, h, link->format, 32)) < 0)
return NULL;
picref = avfilter_get_video_buffer_ref_from_arrays(data, linesize,
@@ -94,11 +78,17 @@ AVFilterBufferRef *ff_default_get_video_buffer(AVFilterLink *link, int perms, in
return NULL;
}
+ memset(data[0], 128, i);
+
+ picref->buf->priv = pool;
+ picref->buf->free = NULL;
+ pool->refcount++;
+
return picref;
}
AVFilterBufferRef *
-avfilter_get_video_buffer_ref_from_arrays(uint8_t *data[4], int linesize[4], int perms,
+avfilter_get_video_buffer_ref_from_arrays(uint8_t * const data[4], const int linesize[4], int perms,
int w, int h, enum PixelFormat format)
{
AVFilterBuffer *pic = av_mallocz(sizeof(AVFilterBuffer));
@@ -147,8 +137,8 @@ AVFilterBufferRef *ff_get_video_buffer(AVFilterLink *link, int perms, int w, int
AVFilterBufferRef *ret = NULL;
av_unused char buf[16];
- FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0);
- av_dlog(NULL, " perms:%s w:%d h:%d\n", ff_get_ref_perms_string(buf, sizeof(buf), perms), w, h);
+ FF_TPRINTF_START(NULL, get_video_buffer); ff_tlog_link(NULL, link, 0);
+ ff_tlog(NULL, " perms:%s w:%d h:%d\n", ff_get_ref_perms_string(buf, sizeof(buf), perms), w, h);
if (link->dstpad->get_video_buffer)
ret = link->dstpad->get_video_buffer(link, perms, w, h);
@@ -159,7 +149,7 @@ AVFilterBufferRef *ff_get_video_buffer(AVFilterLink *link, int perms, int w, int
if (ret)
ret->type = AVMEDIA_TYPE_VIDEO;
- FF_DPRINTF_START(NULL, get_video_buffer); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " returning "); ff_dlog_ref(NULL, ret, 1);
+ FF_TPRINTF_START(NULL, get_video_buffer); ff_tlog_link(NULL, link, 0); ff_tlog(NULL, " returning "); ff_tlog_ref(NULL, ret, 1);
return ret;
}
@@ -222,6 +212,8 @@ static int default_start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
return AVERROR(ENOMEM);
avfilter_copy_buffer_ref_props(outlink->out_buf, picref);
+ outlink->out_buf->video->w = outlink->w;
+ outlink->out_buf->video->h = outlink->h;
buf_out = avfilter_ref_buffer(outlink->out_buf, ~0);
if (!buf_out)
return AVERROR(ENOMEM);
@@ -236,6 +228,7 @@ static void clear_link(AVFilterLink *link)
avfilter_unref_bufferp(&link->cur_buf);
avfilter_unref_bufferp(&link->src_buf);
avfilter_unref_bufferp(&link->out_buf);
+ link->cur_buf_copy = NULL; /* we do not own the reference */
}
/* XXX: should we do the duplicating of the picture ref here, instead of
@@ -243,14 +236,21 @@ static void clear_link(AVFilterLink *link)
int ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
{
int (*start_frame)(AVFilterLink *, AVFilterBufferRef *);
+ AVFilterPad *src = link->srcpad;
AVFilterPad *dst = link->dstpad;
- int ret, perms = picref->perms;
+ int ret, perms;
+ AVFilterCommand *cmd= link->dst->command_queue;
+ int64_t pts;
- FF_DPRINTF_START(NULL, start_frame); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " "); ff_dlog_ref(NULL, picref, 1);
+ FF_TPRINTF_START(NULL, start_frame); ff_tlog_link(NULL, link, 0); ff_tlog(NULL, " "); ff_tlog_ref(NULL, picref, 1);
if (!(start_frame = dst->start_frame))
start_frame = default_start_frame;
+ av_assert1((picref->perms & src->min_perms) == src->min_perms);
+ picref->perms &= ~ src->rej_perms;
+ perms = picref->perms;
+
if (picref->linesize[0] < 0)
perms |= AV_PERM_NEG_LINESIZES;
/* prepare to copy the picture if it has insufficient permissions */
@@ -268,13 +268,33 @@ int ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
link->src_buf = picref;
avfilter_copy_buffer_ref_props(link->cur_buf, link->src_buf);
+
+ /* copy palette if required */
+ if (av_pix_fmt_descriptors[link->format].flags & PIX_FMT_PAL)
+ memcpy(link->cur_buf->data[1], link->src_buf-> data[1], AVPALETTE_SIZE);
}
else
link->cur_buf = picref;
+ link->cur_buf_copy = link->cur_buf;
+
+ while(cmd && cmd->time <= picref->pts * av_q2d(link->time_base)){
+ av_log(link->dst, AV_LOG_DEBUG,
+ "Processing command time:%f command:%s arg:%s\n",
+ cmd->time, cmd->command, cmd->arg);
+ avfilter_process_command(link->dst, cmd->command, cmd->arg, 0, 0, cmd->flags);
+ ff_command_queue_pop(link->dst);
+ cmd= link->dst->command_queue;
+ }
+ pts = link->cur_buf->pts;
ret = start_frame(link, link->cur_buf);
+ ff_update_link_current_pts(link, pts);
if (ret < 0)
clear_link(link);
+ else
+ /* incoming buffers must not be freed in start frame,
+ because they can still be in use by the automatic copy mechanism */
+ av_assert1(link->cur_buf_copy->buf->refcount > 0);
return ret;
}
@@ -335,7 +355,7 @@ int ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
int i, j, vsub, ret;
int (*draw_slice)(AVFilterLink *, int, int, int);
- FF_DPRINTF_START(NULL, draw_slice); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " y:%d h:%d dir:%d\n", y, h, slice_dir);
+ FF_TPRINTF_START(NULL, draw_slice); ff_tlog_link(NULL, link, 0); ff_tlog(NULL, " y:%d h:%d dir:%d\n", y, h, slice_dir);
/* copy the slice if needed for permission reasons */
if (link->src_buf) {
@@ -345,22 +365,22 @@ int ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
if (link->src_buf->data[i]) {
src[i] = link->src_buf-> data[i] +
(y >> (i==1 || i==2 ? vsub : 0)) * link->src_buf-> linesize[i];
- dst[i] = link->cur_buf->data[i] +
- (y >> (i==1 || i==2 ? vsub : 0)) * link->cur_buf->linesize[i];
+ dst[i] = link->cur_buf_copy->data[i] +
+ (y >> (i==1 || i==2 ? vsub : 0)) * link->cur_buf_copy->linesize[i];
} else
src[i] = dst[i] = NULL;
}
for (i = 0; i < 4; i++) {
int planew =
- av_image_get_linesize(link->format, link->cur_buf->video->w, i);
+ av_image_get_linesize(link->format, link->cur_buf_copy->video->w, i);
if (!src[i]) continue;
for (j = 0; j < h >> (i==1 || i==2 ? vsub : 0); j++) {
memcpy(dst[i], src[i], planew);
src[i] += link->src_buf->linesize[i];
- dst[i] += link->cur_buf->linesize[i];
+ dst[i] += link->cur_buf_copy->linesize[i];
}
}
}
@@ -370,5 +390,15 @@ int ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
ret = draw_slice(link, y, h, slice_dir);
if (ret < 0)
clear_link(link);
+ else
+ /* incoming buffers must not be freed in start frame,
+ because they can still be in use by the automatic copy mechanism */
+ av_assert1(link->cur_buf_copy->buf->refcount > 0);
return ret;
}
+
+int avfilter_default_end_frame(AVFilterLink *inlink)
+{
+ return default_end_frame(inlink);
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-10 10:29:04 +0000