* 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"
#include "avfilter.h"
#include "internal.h"
int i;
AVFilterBufferRef *picref = NULL;
AVFilterPool *pool = link->pool;
+ int full_perms = AV_PERM_READ | AV_PERM_WRITE | AV_PERM_PRESERVE |
+ AV_PERM_REUSE | AV_PERM_REUSE2 | AV_PERM_ALIGN;
+
+ av_assert1(!(perms & ~(full_perms | AV_PERM_NEG_LINESIZES)));
if (pool) {
for (i = 0; i < POOL_SIZE; i++) {
pool->count--;
picref->video->w = w;
picref->video->h = h;
- picref->perms = perms | AV_PERM_READ;
+ picref->perms = full_perms;
picref->format = link->format;
pic->refcount = 1;
memcpy(picref->data, pic->data, sizeof(picref->data));
return NULL;
picref = avfilter_get_video_buffer_ref_from_arrays(data, linesize,
- perms, w, h, link->format);
+ full_perms, w, h, link->format);
if (!picref) {
av_free(data[0]);
return NULL;
return ret;
}
-void ff_null_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
+int ff_null_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
{
- ff_start_frame(link->dst->outputs[0], picref);
+ AVFilterBufferRef *buf_out = avfilter_ref_buffer(picref, ~0);
+ if (!buf_out)
+ return AVERROR(ENOMEM);
+ return ff_start_frame(link->dst->outputs[0], buf_out);
}
-static void default_start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
+// for filters that support (but don't require) outpic==inpic
+int ff_inplace_start_frame(AVFilterLink *inlink, AVFilterBufferRef *inpicref)
+{
+ AVFilterLink *outlink = inlink->dst->outputs[0];
+ AVFilterBufferRef *outpicref = NULL, *for_next_filter;
+ int ret = 0;
+
+ if (inpicref->perms & AV_PERM_WRITE) {
+ outpicref = avfilter_ref_buffer(inpicref, ~0);
+ if (!outpicref)
+ return AVERROR(ENOMEM);
+ } else {
+ outpicref = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
+ if (!outpicref)
+ return AVERROR(ENOMEM);
+
+ avfilter_copy_buffer_ref_props(outpicref, inpicref);
+ outpicref->video->w = outlink->w;
+ outpicref->video->h = outlink->h;
+ }
+
+ for_next_filter = avfilter_ref_buffer(outpicref, ~0);
+ if (for_next_filter)
+ ret = ff_start_frame(outlink, for_next_filter);
+ else
+ ret = AVERROR(ENOMEM);
+
+ if (ret < 0) {
+ avfilter_unref_bufferp(&outpicref);
+ return ret;
+ }
+
+ outlink->out_buf = outpicref;
+ return 0;
+}
+
+static int default_start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
{
AVFilterLink *outlink = NULL;
outlink = inlink->dst->outputs[0];
if (outlink) {
+ AVFilterBufferRef *buf_out;
outlink->out_buf = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
+ if (!outlink->out_buf)
+ 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;
- ff_start_frame(outlink, avfilter_ref_buffer(outlink->out_buf, ~0));
+ buf_out = avfilter_ref_buffer(outlink->out_buf, ~0);
+ if (!buf_out)
+ return AVERROR(ENOMEM);
+
+ return ff_start_frame(outlink, buf_out);
}
+ return 0;
+}
+
+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
* forcing the source filter to do it? */
-void ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
+int ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
{
- void (*start_frame)(AVFilterLink *, AVFilterBufferRef *);
+ int (*start_frame)(AVFilterLink *, AVFilterBufferRef *);
+ AVFilterPad *src = link->srcpad;
AVFilterPad *dst = link->dstpad;
- int perms = picref->perms;
+ int ret, perms;
AVFilterCommand *cmd= link->dst->command_queue;
+ int64_t pts;
FF_TPRINTF_START(NULL, start_frame); ff_tlog_link(NULL, link, 0); ff_tlog(NULL, " "); ff_tlog_ref(NULL, picref, 1);
+ if (link->closed) {
+ avfilter_unref_buffer(picref);
+ return AVERROR_EOF;
+ }
+
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 */
link->dstpad->min_perms, link->dstpad->rej_perms);
link->cur_buf = ff_get_video_buffer(link, dst->min_perms, link->w, link->h);
+ if (!link->cur_buf) {
+ avfilter_unref_bufferp(&picref);
+ return AVERROR(ENOMEM);
+ }
+
link->src_buf = picref;
avfilter_copy_buffer_ref_props(link->cur_buf, link->src_buf);
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",
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);
- start_frame(link, link->cur_buf);
- ff_update_link_current_pts(link, link->cur_buf->pts);
-}
-
-void ff_null_start_frame_keep_ref(AVFilterLink *inlink,
- AVFilterBufferRef *picref)
-{
- ff_start_frame(inlink->dst->outputs[0], avfilter_ref_buffer(picref, ~0));
+ return ret;
}
-void ff_null_end_frame(AVFilterLink *link)
+int ff_null_end_frame(AVFilterLink *link)
{
- ff_end_frame(link->dst->outputs[0]);
+ return ff_end_frame(link->dst->outputs[0]);
}
-static void default_end_frame(AVFilterLink *inlink)
+static int default_end_frame(AVFilterLink *inlink)
{
AVFilterLink *outlink = NULL;
if (inlink->dst->nb_outputs)
outlink = inlink->dst->outputs[0];
- avfilter_unref_buffer(inlink->cur_buf);
- inlink->cur_buf = NULL;
-
if (outlink) {
- if (outlink->out_buf) {
- avfilter_unref_buffer(outlink->out_buf);
- outlink->out_buf = NULL;
- }
- ff_end_frame(outlink);
+ return ff_end_frame(outlink);
}
+ return 0;
}
-void ff_end_frame(AVFilterLink *link)
+int ff_end_frame(AVFilterLink *link)
{
- void (*end_frame)(AVFilterLink *);
+ int (*end_frame)(AVFilterLink *);
+ int ret;
if (!(end_frame = link->dstpad->end_frame))
end_frame = default_end_frame;
- end_frame(link);
+ ret = end_frame(link);
- /* unreference the source picture if we're feeding the destination filter
- * a copied version dues to permission issues */
- if (link->src_buf) {
- avfilter_unref_buffer(link->src_buf);
- link->src_buf = NULL;
- }
+ clear_link(link);
+
+ return ret;
}
-void ff_null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
+int ff_null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
{
- ff_draw_slice(link->dst->outputs[0], y, h, slice_dir);
+ return ff_draw_slice(link->dst->outputs[0], y, h, slice_dir);
}
-static void default_draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
+static int default_draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
{
AVFilterLink *outlink = NULL;
outlink = inlink->dst->outputs[0];
if (outlink)
- ff_draw_slice(outlink, y, h, slice_dir);
+ return ff_draw_slice(outlink, y, h, slice_dir);
+ return 0;
}
-void ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
+int ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
{
uint8_t *src[4], *dst[4];
- int i, j, vsub;
- void (*draw_slice)(AVFilterLink *, int, int, int);
+ int i, j, vsub, ret;
+ int (*draw_slice)(AVFilterLink *, int, int, int);
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);
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];
}
}
}
if (!(draw_slice = link->dstpad->draw_slice))
draw_slice = default_draw_slice;
- draw_slice(link, y, h, 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;
}
-void avfilter_default_end_frame(AVFilterLink *inlink)
+int avfilter_default_end_frame(AVFilterLink *inlink)
{
- default_end_frame(inlink);
+ return default_end_frame(inlink);
}
projects / ffmpeg / blobdiff