* filter layer
* Copyright (c) 2007 Bobby Bingham
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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 "libavutil/buffer.h"
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
+#include "libavutil/eval.h"
#include "libavutil/hwcontext.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/pixdesc.h"
#include "libavutil/rational.h"
#include "libavutil/samplefmt.h"
+#include "libavutil/thread.h"
+
+#define FF_INTERNAL_FIELDS 1
+#include "framequeue.h"
#include "audio.h"
#include "avfilter.h"
+#include "filters.h"
#include "formats.h"
#include "internal.h"
-#include "video.h"
+
+#include "libavutil/ffversion.h"
+const char av_filter_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
+
+void ff_tlog_ref(void *ctx, AVFrame *ref, int end)
+{
+ av_unused char buf[16];
+ ff_tlog(ctx,
+ "ref[%p buf:%p data:%p linesize[%d, %d, %d, %d] pts:%"PRId64" pos:%"PRId64,
+ ref, ref->buf, ref->data[0],
+ ref->linesize[0], ref->linesize[1], ref->linesize[2], ref->linesize[3],
+ ref->pts, ref->pkt_pos);
+
+ if (ref->width) {
+ ff_tlog(ctx, " a:%d/%d s:%dx%d i:%c iskey:%d type:%c",
+ ref->sample_aspect_ratio.num, ref->sample_aspect_ratio.den,
+ ref->width, ref->height,
+ !ref->interlaced_frame ? 'P' : /* Progressive */
+ ref->top_field_first ? 'T' : 'B', /* Top / Bottom */
+ ref->key_frame,
+ av_get_picture_type_char(ref->pict_type));
+ }
+ if (ref->nb_samples) {
+ ff_tlog(ctx, " cl:%"PRId64"d n:%d r:%d",
+ ref->channel_layout,
+ ref->nb_samples,
+ ref->sample_rate);
+ }
+
+ ff_tlog(ctx, "]%s", end ? "\n" : "");
+}
unsigned avfilter_version(void)
{
+ av_assert0(LIBAVFILTER_VERSION_MICRO >= 100);
return LIBAVFILTER_VERSION_INT;
}
const char *avfilter_configuration(void)
{
- return LIBAV_CONFIGURATION;
+ return FFMPEG_CONFIGURATION;
}
const char *avfilter_license(void)
{
#define LICENSE_PREFIX "libavfilter license: "
- return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
+ return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
+}
+
+void ff_command_queue_pop(AVFilterContext *filter)
+{
+ AVFilterCommand *c= filter->command_queue;
+ av_freep(&c->arg);
+ av_freep(&c->command);
+ filter->command_queue= c->next;
+ av_free(c);
}
-void ff_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
+int ff_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
AVFilterPad **pads, AVFilterLink ***links,
AVFilterPad *newpad)
{
+ AVFilterLink **newlinks;
+ AVFilterPad *newpads;
unsigned i;
idx = FFMIN(idx, *count);
- *pads = av_realloc(*pads, sizeof(AVFilterPad) * (*count + 1));
- *links = av_realloc(*links, sizeof(AVFilterLink*) * (*count + 1));
+ newpads = av_realloc_array(*pads, *count + 1, sizeof(AVFilterPad));
+ newlinks = av_realloc_array(*links, *count + 1, sizeof(AVFilterLink*));
+ if (newpads)
+ *pads = newpads;
+ if (newlinks)
+ *links = newlinks;
+ if (!newpads || !newlinks)
+ return AVERROR(ENOMEM);
+
memmove(*pads + idx + 1, *pads + idx, sizeof(AVFilterPad) * (*count - idx));
memmove(*links + idx + 1, *links + idx, sizeof(AVFilterLink*) * (*count - idx));
memcpy(*pads + idx, newpad, sizeof(AVFilterPad));
(*count)++;
for (i = idx + 1; i < *count; i++)
- if (*links[i])
- (*(unsigned *)((uint8_t *) *links[i] + padidx_off))++;
+ if ((*links)[i])
+ (*(unsigned *)((uint8_t *) (*links)[i] + padidx_off))++;
+
+ return 0;
}
int avfilter_link(AVFilterContext *src, unsigned srcpad,
{
AVFilterLink *link;
+ av_assert0(src->graph);
+ av_assert0(dst->graph);
+ av_assert0(src->graph == dst->graph);
+
if (src->nb_outputs <= srcpad || dst->nb_inputs <= dstpad ||
src->outputs[srcpad] || dst->inputs[dstpad])
return AVERROR(EINVAL);
if (src->output_pads[srcpad].type != dst->input_pads[dstpad].type) {
av_log(src, AV_LOG_ERROR,
- "Media type mismatch between the '%s' filter output pad %d and the '%s' filter input pad %d\n",
- src->name, srcpad, dst->name, dstpad);
+ "Media type mismatch between the '%s' filter output pad %d (%s) and the '%s' filter input pad %d (%s)\n",
+ src->name, srcpad, (char *)av_x_if_null(av_get_media_type_string(src->output_pads[srcpad].type), "?"),
+ dst->name, dstpad, (char *)av_x_if_null(av_get_media_type_string(dst-> input_pads[dstpad].type), "?"));
return AVERROR(EINVAL);
}
link->srcpad = &src->output_pads[srcpad];
link->dstpad = &dst->input_pads[dstpad];
link->type = src->output_pads[srcpad].type;
- assert(AV_PIX_FMT_NONE == -1 && AV_SAMPLE_FMT_NONE == -1);
+ av_assert0(AV_PIX_FMT_NONE == -1 && AV_SAMPLE_FMT_NONE == -1);
link->format = -1;
+ ff_framequeue_init(&link->fifo, &src->graph->internal->frame_queues);
return 0;
}
+void avfilter_link_free(AVFilterLink **link)
+{
+ if (!*link)
+ return;
+
+ av_frame_free(&(*link)->partial_buf);
+ ff_framequeue_free(&(*link)->fifo);
+ ff_frame_pool_uninit((FFFramePool**)&(*link)->frame_pool);
+
+ av_freep(link);
+}
+
+#if FF_API_FILTER_GET_SET
+int avfilter_link_get_channels(AVFilterLink *link)
+{
+ return link->channels;
+}
+#endif
+
+void ff_filter_set_ready(AVFilterContext *filter, unsigned priority)
+{
+ filter->ready = FFMAX(filter->ready, priority);
+}
+
+/**
+ * Clear frame_blocked_in on all outputs.
+ * This is necessary whenever something changes on input.
+ */
+static void filter_unblock(AVFilterContext *filter)
+{
+ unsigned i;
+
+ for (i = 0; i < filter->nb_outputs; i++)
+ filter->outputs[i]->frame_blocked_in = 0;
+}
+
+
+void ff_avfilter_link_set_in_status(AVFilterLink *link, int status, int64_t pts)
+{
+ if (link->status_in == status)
+ return;
+ av_assert0(!link->status_in);
+ link->status_in = status;
+ link->status_in_pts = pts;
+ link->frame_wanted_out = 0;
+ link->frame_blocked_in = 0;
+ filter_unblock(link->dst);
+ ff_filter_set_ready(link->dst, 200);
+}
+
+void ff_avfilter_link_set_out_status(AVFilterLink *link, int status, int64_t pts)
+{
+ av_assert0(!link->frame_wanted_out);
+ av_assert0(!link->status_out);
+ link->status_out = status;
+ if (pts != AV_NOPTS_VALUE)
+ ff_update_link_current_pts(link, pts);
+ filter_unblock(link->dst);
+ ff_filter_set_ready(link->src, 200);
+}
+
+void avfilter_link_set_closed(AVFilterLink *link, int closed)
+{
+ ff_avfilter_link_set_out_status(link, closed ? AVERROR_EOF : 0, AV_NOPTS_VALUE);
+}
+
int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt,
unsigned filt_srcpad_idx, unsigned filt_dstpad_idx)
{
for (i = 0; i < filter->nb_inputs; i ++) {
AVFilterLink *link = filter->inputs[i];
+ AVFilterLink *inlink;
if (!link) continue;
if (!link->src || !link->dst) {
return AVERROR(EINVAL);
}
+ inlink = link->src->nb_inputs ? link->src->inputs[0] : NULL;
+ link->current_pts =
+ link->current_pts_us = AV_NOPTS_VALUE;
+
switch (link->init_state) {
case AVLINK_INIT:
continue;
return ret;
}
- if (link->time_base.num == 0 && link->time_base.den == 0)
- link->time_base = link->src->nb_inputs ?
- link->src->inputs[0]->time_base : AV_TIME_BASE_Q;
+ switch (link->type) {
+ case AVMEDIA_TYPE_VIDEO:
+ if (!link->time_base.num && !link->time_base.den)
+ link->time_base = inlink ? inlink->time_base : AV_TIME_BASE_Q;
- if (link->type == AVMEDIA_TYPE_VIDEO) {
if (!link->sample_aspect_ratio.num && !link->sample_aspect_ratio.den)
- link->sample_aspect_ratio = link->src->nb_inputs ?
- link->src->inputs[0]->sample_aspect_ratio : (AVRational){1,1};
+ link->sample_aspect_ratio = inlink ?
+ inlink->sample_aspect_ratio : (AVRational){1,1};
- if (link->src->nb_inputs) {
+ if (inlink) {
if (!link->frame_rate.num && !link->frame_rate.den)
- link->frame_rate = link->src->inputs[0]->frame_rate;
+ link->frame_rate = inlink->frame_rate;
if (!link->w)
- link->w = link->src->inputs[0]->w;
+ link->w = inlink->w;
if (!link->h)
- link->h = link->src->inputs[0]->h;
+ link->h = inlink->h;
} else if (!link->w || !link->h) {
av_log(link->src, AV_LOG_ERROR,
"Video source filters must set their output link's "
"width and height\n");
return AVERROR(EINVAL);
}
+ break;
+
+ case AVMEDIA_TYPE_AUDIO:
+ if (inlink) {
+ if (!link->time_base.num && !link->time_base.den)
+ link->time_base = inlink->time_base;
+ }
+
+ if (!link->time_base.num && !link->time_base.den)
+ link->time_base = (AVRational) {1, link->sample_rate};
}
if (link->src->nb_inputs && link->src->inputs[0]->hw_frames_ctx &&
return 0;
}
-void ff_dlog_link(void *ctx, AVFilterLink *link, int end)
+void ff_tlog_link(void *ctx, AVFilterLink *link, int end)
{
if (link->type == AVMEDIA_TYPE_VIDEO) {
- av_log(ctx, AV_LOG_TRACE,
- "link[%p s:%dx%d fmt:%-16s %-16s->%-16s]%s",
+ ff_tlog(ctx,
+ "link[%p s:%dx%d fmt:%s %s->%s]%s",
link, link->w, link->h,
av_get_pix_fmt_name(link->format),
link->src ? link->src->filter->name : "",
char buf[128];
av_get_channel_layout_string(buf, sizeof(buf), -1, link->channel_layout);
- av_log(ctx, AV_LOG_TRACE,
- "link[%p r:%d cl:%s fmt:%-16s %-16s->%-16s]%s",
- link, link->sample_rate, buf,
+ ff_tlog(ctx,
+ "link[%p r:%d cl:%s fmt:%s %s->%s]%s",
+ link, (int)link->sample_rate, buf,
av_get_sample_fmt_name(link->format),
link->src ? link->src->filter->name : "",
link->dst ? link->dst->filter->name : "",
int ff_request_frame(AVFilterLink *link)
{
- FF_DPRINTF_START(NULL, request_frame); ff_dlog_link(NULL, link, 1);
+ FF_TPRINTF_START(NULL, request_frame); ff_tlog_link(NULL, link, 1);
+
+ av_assert1(!link->dst->filter->activate);
+ if (link->status_out)
+ return link->status_out;
+ if (link->status_in) {
+ if (ff_framequeue_queued_frames(&link->fifo)) {
+ av_assert1(!link->frame_wanted_out);
+ av_assert1(link->dst->ready >= 300);
+ return 0;
+ } else {
+ /* Acknowledge status change. Filters using ff_request_frame() will
+ handle the change automatically. Filters can also check the
+ status directly but none do yet. */
+ ff_avfilter_link_set_out_status(link, link->status_in, link->status_in_pts);
+ return link->status_out;
+ }
+ }
+ link->frame_wanted_out = 1;
+ ff_filter_set_ready(link->src, 100);
+ return 0;
+}
+
+static int64_t guess_status_pts(AVFilterContext *ctx, int status, AVRational link_time_base)
+{
+ unsigned i;
+ int64_t r = INT64_MAX;
+
+ for (i = 0; i < ctx->nb_inputs; i++)
+ if (ctx->inputs[i]->status_out == status)
+ r = FFMIN(r, av_rescale_q(ctx->inputs[i]->current_pts, ctx->inputs[i]->time_base, link_time_base));
+ if (r < INT64_MAX)
+ return r;
+ av_log(ctx, AV_LOG_WARNING, "EOF timestamp not reliable\n");
+ for (i = 0; i < ctx->nb_inputs; i++)
+ r = FFMIN(r, av_rescale_q(ctx->inputs[i]->status_in_pts, ctx->inputs[i]->time_base, link_time_base));
+ if (r < INT64_MAX)
+ return r;
+ return AV_NOPTS_VALUE;
+}
+
+static int ff_request_frame_to_filter(AVFilterLink *link)
+{
+ int ret = -1;
+ FF_TPRINTF_START(NULL, request_frame_to_filter); ff_tlog_link(NULL, link, 1);
+ /* Assume the filter is blocked, let the method clear it if not */
+ link->frame_blocked_in = 1;
if (link->srcpad->request_frame)
- return link->srcpad->request_frame(link);
+ ret = link->srcpad->request_frame(link);
else if (link->src->inputs[0])
- return ff_request_frame(link->src->inputs[0]);
- else
- return AVERROR(EINVAL);
+ ret = ff_request_frame(link->src->inputs[0]);
+ if (ret < 0) {
+ if (ret != AVERROR(EAGAIN) && ret != link->status_in)
+ ff_avfilter_link_set_in_status(link, ret, guess_status_pts(link->src, ret, link->time_base));
+ if (ret == AVERROR_EOF)
+ ret = 0;
+ }
+ return ret;
}
int ff_poll_frame(AVFilterLink *link)
return min;
}
-static AVFilter *first_filter;
+static const char *const var_names[] = {
+ "t",
+ "n",
+ "pos",
+ "w",
+ "h",
+ NULL
+};
+
+enum {
+ VAR_T,
+ VAR_N,
+ VAR_POS,
+ VAR_W,
+ VAR_H,
+ VAR_VARS_NB
+};
-const AVFilter *avfilter_get_by_name(const char *name)
+static int set_enable_expr(AVFilterContext *ctx, const char *expr)
{
- const AVFilter *f = NULL;
+ int ret;
+ char *expr_dup;
+ AVExpr *old = ctx->enable;
- if (!name)
- return NULL;
+ if (!(ctx->filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE)) {
+ av_log(ctx, AV_LOG_ERROR, "Timeline ('enable' option) not supported "
+ "with filter '%s'\n", ctx->filter->name);
+ return AVERROR_PATCHWELCOME;
+ }
- while ((f = avfilter_next(f)))
- if (!strcmp(f->name, name))
- return f;
+ expr_dup = av_strdup(expr);
+ if (!expr_dup)
+ return AVERROR(ENOMEM);
- return NULL;
+ if (!ctx->var_values) {
+ ctx->var_values = av_calloc(VAR_VARS_NB, sizeof(*ctx->var_values));
+ if (!ctx->var_values) {
+ av_free(expr_dup);
+ return AVERROR(ENOMEM);
+ }
+ }
+
+ ret = av_expr_parse((AVExpr**)&ctx->enable, expr_dup, var_names,
+ NULL, NULL, NULL, NULL, 0, ctx->priv);
+ if (ret < 0) {
+ av_log(ctx->priv, AV_LOG_ERROR,
+ "Error when evaluating the expression '%s' for enable\n",
+ expr_dup);
+ av_free(expr_dup);
+ return ret;
+ }
+
+ av_expr_free(old);
+ av_free(ctx->enable_str);
+ ctx->enable_str = expr_dup;
+ return 0;
}
-int avfilter_register(AVFilter *filter)
+void ff_update_link_current_pts(AVFilterLink *link, int64_t pts)
{
- AVFilter **f = &first_filter;
- while (*f)
- f = &(*f)->next;
- *f = filter;
- filter->next = NULL;
- return 0;
+ if (pts == AV_NOPTS_VALUE)
+ return;
+ link->current_pts = pts;
+ link->current_pts_us = av_rescale_q(pts, link->time_base, AV_TIME_BASE_Q);
+ /* TODO use duration */
+ if (link->graph && link->age_index >= 0)
+ ff_avfilter_graph_update_heap(link->graph, link);
}
-const AVFilter *avfilter_next(const AVFilter *prev)
+int avfilter_process_command(AVFilterContext *filter, const char *cmd, const char *arg, char *res, int res_len, int flags)
{
- return prev ? prev->next : first_filter;
+ if(!strcmp(cmd, "ping")){
+ char local_res[256] = {0};
+
+ if (!res) {
+ res = local_res;
+ res_len = sizeof(local_res);
+ }
+ av_strlcatf(res, res_len, "pong from:%s %s\n", filter->filter->name, filter->name);
+ if (res == local_res)
+ av_log(filter, AV_LOG_INFO, "%s", res);
+ return 0;
+ }else if(!strcmp(cmd, "enable")) {
+ return set_enable_expr(filter, arg);
+ }else if(filter->filter->process_command) {
+ return filter->filter->process_command(filter, cmd, arg, res, res_len, flags);
+ }
+ return AVERROR(ENOSYS);
}
int avfilter_pad_count(const AVFilterPad *pads)
return count;
}
-static const char *filter_name(void *p)
+static const char *default_filter_name(void *filter_ctx)
{
- AVFilterContext *filter = p;
- return filter->filter->name;
+ AVFilterContext *ctx = filter_ctx;
+ return ctx->name ? ctx->name : ctx->filter->name;
}
static void *filter_child_next(void *obj, void *prev)
static const AVClass *filter_child_class_next(const AVClass *prev)
{
+ void *opaque = NULL;
const AVFilter *f = NULL;
- while (prev && (f = avfilter_next(f)))
+ /* find the filter that corresponds to prev */
+ while (prev && (f = av_filter_iterate(&opaque)))
if (f->priv_class == prev)
break;
- while ((f = avfilter_next(f)))
+ /* could not find filter corresponding to prev */
+ if (prev && !f)
+ return NULL;
+
+ /* find next filter with specific options */
+ while ((f = av_filter_iterate(&opaque)))
if (f->priv_class)
return f->priv_class;
}
#define OFFSET(x) offsetof(AVFilterContext, x)
-#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
+#define FLAGS AV_OPT_FLAG_FILTERING_PARAM
static const AVOption avfilter_options[] = {
{ "thread_type", "Allowed thread types", OFFSET(thread_type), AV_OPT_TYPE_FLAGS,
{ .i64 = AVFILTER_THREAD_SLICE }, 0, INT_MAX, FLAGS, "thread_type" },
{ "slice", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AVFILTER_THREAD_SLICE }, .unit = "thread_type" },
+ { "enable", "set enable expression", OFFSET(enable_str), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
+ { "threads", "Allowed number of threads", OFFSET(nb_threads), AV_OPT_TYPE_INT,
+ { .i64 = 0 }, 0, INT_MAX, FLAGS },
{ "extra_hw_frames", "Number of extra hardware frames to allocate for the user",
OFFSET(extra_hw_frames), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
{ NULL },
static const AVClass avfilter_class = {
.class_name = "AVFilter",
- .item_name = filter_name,
+ .item_name = default_filter_name,
.version = LIBAVUTIL_VERSION_INT,
+ .category = AV_CLASS_CATEGORY_FILTER,
.child_next = filter_child_next,
.child_class_next = filter_child_class_next,
.option = avfilter_options,
AVFilterContext *ff_filter_alloc(const AVFilter *filter, const char *inst_name)
{
AVFilterContext *ret;
+ int preinited = 0;
if (!filter)
return NULL;
if (!ret->priv)
goto err;
}
+ if (filter->preinit) {
+ if (filter->preinit(ret) < 0)
+ goto err;
+ preinited = 1;
+ }
av_opt_set_defaults(ret);
if (filter->priv_class) {
ret->nb_inputs = avfilter_pad_count(filter->inputs);
if (ret->nb_inputs ) {
- ret->input_pads = av_malloc(sizeof(AVFilterPad) * ret->nb_inputs);
+ ret->input_pads = av_malloc_array(ret->nb_inputs, sizeof(AVFilterPad));
if (!ret->input_pads)
goto err;
memcpy(ret->input_pads, filter->inputs, sizeof(AVFilterPad) * ret->nb_inputs);
- ret->inputs = av_mallocz(sizeof(AVFilterLink*) * ret->nb_inputs);
+ ret->inputs = av_mallocz_array(ret->nb_inputs, sizeof(AVFilterLink*));
if (!ret->inputs)
goto err;
}
ret->nb_outputs = avfilter_pad_count(filter->outputs);
if (ret->nb_outputs) {
- ret->output_pads = av_malloc(sizeof(AVFilterPad) * ret->nb_outputs);
+ ret->output_pads = av_malloc_array(ret->nb_outputs, sizeof(AVFilterPad));
if (!ret->output_pads)
goto err;
memcpy(ret->output_pads, filter->outputs, sizeof(AVFilterPad) * ret->nb_outputs);
- ret->outputs = av_mallocz(sizeof(AVFilterLink*) * ret->nb_outputs);
+ ret->outputs = av_mallocz_array(ret->nb_outputs, sizeof(AVFilterLink*));
if (!ret->outputs)
goto err;
}
return ret;
err:
+ if (preinited)
+ filter->uninit(ret);
av_freep(&ret->inputs);
av_freep(&ret->input_pads);
ret->nb_inputs = 0;
ff_formats_unref(&link->out_samplerates);
ff_channel_layouts_unref(&link->in_channel_layouts);
ff_channel_layouts_unref(&link->out_channel_layouts);
- av_freep(&link);
+ avfilter_link_free(&link);
}
void avfilter_free(AVFilterContext *filter)
{
int i;
+ if (!filter)
+ return;
+
if (filter->graph)
ff_filter_graph_remove_filter(filter->graph, filter);
av_freep(&filter->inputs);
av_freep(&filter->outputs);
av_freep(&filter->priv);
+ while(filter->command_queue){
+ ff_command_queue_pop(filter);
+ }
+ av_opt_free(filter);
+ av_expr_free(filter->enable);
+ filter->enable = NULL;
+ av_freep(&filter->var_values);
av_freep(&filter->internal);
av_free(filter);
}
-/* process a list of value1:value2:..., each value corresponding
- * to subsequent AVOption, in the order they are declared */
-static int process_unnamed_options(AVFilterContext *ctx, AVDictionary **options,
- const char *args)
+int ff_filter_get_nb_threads(AVFilterContext *ctx)
+{
+ if (ctx->nb_threads > 0)
+ return FFMIN(ctx->nb_threads, ctx->graph->nb_threads);
+ return ctx->graph->nb_threads;
+}
+
+static int process_options(AVFilterContext *ctx, AVDictionary **options,
+ const char *args)
{
const AVOption *o = NULL;
- const char *p = args;
- char *val;
+ int ret, count = 0;
+ char *av_uninit(parsed_key), *av_uninit(value);
+ const char *key;
+ int offset= -1;
+
+ if (!args)
+ return 0;
+
+ while (*args) {
+ const char *shorthand = NULL;
- while (*p) {
o = av_opt_next(ctx->priv, o);
- if (!o) {
- av_log(ctx, AV_LOG_ERROR, "More options provided than "
- "this filter supports.\n");
- return AVERROR(EINVAL);
+ if (o) {
+ if (o->type == AV_OPT_TYPE_CONST || o->offset == offset)
+ continue;
+ offset = o->offset;
+ shorthand = o->name;
}
- if (o->type == AV_OPT_TYPE_CONST)
- continue;
- val = av_get_token(&p, ":");
- if (!val)
- return AVERROR(ENOMEM);
+ ret = av_opt_get_key_value(&args, "=", ":",
+ shorthand ? AV_OPT_FLAG_IMPLICIT_KEY : 0,
+ &parsed_key, &value);
+ if (ret < 0) {
+ if (ret == AVERROR(EINVAL))
+ av_log(ctx, AV_LOG_ERROR, "No option name near '%s'\n", args);
+ else
+ av_log(ctx, AV_LOG_ERROR, "Unable to parse '%s': %s\n", args,
+ av_err2str(ret));
+ return ret;
+ }
+ if (*args)
+ args++;
+ if (parsed_key) {
+ key = parsed_key;
+ while ((o = av_opt_next(ctx->priv, o))); /* discard all remaining shorthand */
+ } else {
+ key = shorthand;
+ }
- av_dict_set(options, o->name, val, 0);
+ av_log(ctx, AV_LOG_DEBUG, "Setting '%s' to value '%s'\n", key, value);
- av_freep(&val);
- if (*p)
- p++;
+ if (av_opt_find(ctx, key, NULL, 0, 0)) {
+ ret = av_opt_set(ctx, key, value, 0);
+ if (ret < 0) {
+ av_free(value);
+ av_free(parsed_key);
+ return ret;
+ }
+ } else {
+ av_dict_set(options, key, value, 0);
+ if ((ret = av_opt_set(ctx->priv, key, value, AV_OPT_SEARCH_CHILDREN)) < 0) {
+ if (!av_opt_find(ctx->priv, key, NULL, 0, AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)) {
+ if (ret == AVERROR_OPTION_NOT_FOUND)
+ av_log(ctx, AV_LOG_ERROR, "Option '%s' not found\n", key);
+ av_free(value);
+ av_free(parsed_key);
+ return ret;
+ }
+ }
+ }
+
+ av_free(value);
+ av_free(parsed_key);
+ count++;
}
- return 0;
+ if (ctx->enable_str) {
+ ret = set_enable_expr(ctx, ctx->enable_str);
+ if (ret < 0)
+ return ret;
+ }
+ return count;
}
int avfilter_init_dict(AVFilterContext *ctx, AVDictionary **options)
}
if (ctx->filter->priv_class) {
- ret = av_opt_set_dict(ctx->priv, options);
+ ret = av_opt_set_dict2(ctx->priv, options, AV_OPT_SEARCH_CHILDREN);
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, "Error applying options to the filter.\n");
return ret;
}
}
- if (ctx->filter->init)
+ if (ctx->filter->init_opaque)
+ ret = ctx->filter->init_opaque(ctx, NULL);
+ else if (ctx->filter->init)
ret = ctx->filter->init(ctx);
else if (ctx->filter->init_dict)
ret = ctx->filter->init_dict(ctx, options);
return AVERROR(EINVAL);
}
- if (strchr(args, '=')) {
- /* assume a list of key1=value1:key2=value2:... */
- ret = av_dict_parse_string(&options, args, "=", ":", 0);
+#if FF_API_OLD_FILTER_OPTS_ERROR
+ if ( !strcmp(filter->filter->name, "format") ||
+ !strcmp(filter->filter->name, "noformat") ||
+ !strcmp(filter->filter->name, "frei0r") ||
+ !strcmp(filter->filter->name, "frei0r_src") ||
+ !strcmp(filter->filter->name, "ocv") ||
+ !strcmp(filter->filter->name, "pan") ||
+ !strcmp(filter->filter->name, "pp") ||
+ !strcmp(filter->filter->name, "aevalsrc")) {
+ /* a hack for compatibility with the old syntax
+ * replace colons with |s */
+ char *copy = av_strdup(args);
+ char *p = copy;
+ int nb_leading = 0; // number of leading colons to skip
+ int deprecated = 0;
+
+ if (!copy) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ if (!strcmp(filter->filter->name, "frei0r") ||
+ !strcmp(filter->filter->name, "ocv"))
+ nb_leading = 1;
+ else if (!strcmp(filter->filter->name, "frei0r_src"))
+ nb_leading = 3;
+
+ while (nb_leading--) {
+ p = strchr(p, ':');
+ if (!p) {
+ p = copy + strlen(copy);
+ break;
+ }
+ p++;
+ }
+
+ deprecated = strchr(p, ':') != NULL;
+
+ if (!strcmp(filter->filter->name, "aevalsrc")) {
+ deprecated = 0;
+ while ((p = strchr(p, ':')) && p[1] != ':') {
+ const char *epos = strchr(p + 1, '=');
+ const char *spos = strchr(p + 1, ':');
+ const int next_token_is_opt = epos && (!spos || epos < spos);
+ if (next_token_is_opt) {
+ p++;
+ break;
+ }
+ /* next token does not contain a '=', assume a channel expression */
+ deprecated = 1;
+ *p++ = '|';
+ }
+ if (p && *p == ':') { // double sep '::' found
+ deprecated = 1;
+ memmove(p, p + 1, strlen(p));
+ }
+ } else
+ while ((p = strchr(p, ':')))
+ *p++ = '|';
+
+ if (deprecated) {
+ av_log(filter, AV_LOG_ERROR, "This syntax is deprecated. Use "
+ "'|' to separate the list items ('%s' instead of '%s')\n",
+ copy, args);
+ ret = AVERROR(EINVAL);
+ } else {
+ ret = process_options(filter, &options, copy);
+ }
+ av_freep(©);
+
if (ret < 0)
goto fail;
- } else {
- ret = process_unnamed_options(filter, &options, args);
+ } else
+#endif
+ {
+ ret = process_options(filter, &options, args);
if (ret < 0)
goto fail;
}
return ff_filter_frame(link->dst->outputs[0], frame);
}
-int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
+static int ff_filter_frame_framed(AVFilterLink *link, AVFrame *frame)
{
int (*filter_frame)(AVFilterLink *, AVFrame *);
+ AVFilterContext *dstctx = link->dst;
AVFilterPad *dst = link->dstpad;
- AVFrame *out = NULL;
int ret;
- FF_DPRINTF_START(NULL, filter_frame);
- ff_dlog_link(NULL, link, 1);
-
if (!(filter_frame = dst->filter_frame))
filter_frame = default_filter_frame;
- /* copy the frame if needed */
- if (dst->needs_writable && !av_frame_is_writable(frame)) {
- av_log(link->dst, AV_LOG_DEBUG, "Copying data in avfilter.\n");
-
- switch (link->type) {
- case AVMEDIA_TYPE_VIDEO:
- out = ff_get_video_buffer(link, link->w, link->h);
- break;
- case AVMEDIA_TYPE_AUDIO:
- out = ff_get_audio_buffer(link, frame->nb_samples);
- break;
- default:
- ret = AVERROR(EINVAL);
+ if (dst->needs_writable) {
+ ret = ff_inlink_make_frame_writable(link, &frame);
+ if (ret < 0)
goto fail;
+ }
+
+ ff_inlink_process_commands(link, frame);
+ dstctx->is_disabled = !ff_inlink_evaluate_timeline_at_frame(link, frame);
+
+ if (dstctx->is_disabled &&
+ (dstctx->filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC))
+ filter_frame = default_filter_frame;
+ ret = filter_frame(link, frame);
+ link->frame_count_out++;
+ return ret;
+
+fail:
+ av_frame_free(&frame);
+ return ret;
+}
+
+int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
+{
+ int ret;
+ FF_TPRINTF_START(NULL, filter_frame); ff_tlog_link(NULL, link, 1); ff_tlog(NULL, " "); ff_tlog_ref(NULL, frame, 1);
+
+ /* Consistency checks */
+ if (link->type == AVMEDIA_TYPE_VIDEO) {
+ if (strcmp(link->dst->filter->name, "buffersink") &&
+ strcmp(link->dst->filter->name, "format") &&
+ strcmp(link->dst->filter->name, "idet") &&
+ strcmp(link->dst->filter->name, "null") &&
+ strcmp(link->dst->filter->name, "scale")) {
+ av_assert1(frame->format == link->format);
+ av_assert1(frame->width == link->w);
+ av_assert1(frame->height == link->h);
}
- if (!out) {
- ret = AVERROR(ENOMEM);
- goto fail;
+ } else {
+ if (frame->format != link->format) {
+ av_log(link->dst, AV_LOG_ERROR, "Format change is not supported\n");
+ goto error;
+ }
+ if (frame->channels != link->channels) {
+ av_log(link->dst, AV_LOG_ERROR, "Channel count change is not supported\n");
+ goto error;
}
+ if (frame->channel_layout != link->channel_layout) {
+ av_log(link->dst, AV_LOG_ERROR, "Channel layout change is not supported\n");
+ goto error;
+ }
+ if (frame->sample_rate != link->sample_rate) {
+ av_log(link->dst, AV_LOG_ERROR, "Sample rate change is not supported\n");
+ goto error;
+ }
+ }
- ret = av_frame_copy_props(out, frame);
- if (ret < 0)
- goto fail;
+ link->frame_blocked_in = link->frame_wanted_out = 0;
+ link->frame_count_in++;
+ filter_unblock(link->dst);
+ ret = ff_framequeue_add(&link->fifo, frame);
+ if (ret < 0) {
+ av_frame_free(&frame);
+ return ret;
+ }
+ ff_filter_set_ready(link->dst, 300);
+ return 0;
- switch (link->type) {
- case AVMEDIA_TYPE_VIDEO:
- av_image_copy(out->data, out->linesize, frame->data, frame->linesize,
- frame->format, frame->width, frame->height);
- break;
- case AVMEDIA_TYPE_AUDIO:
- av_samples_copy(out->extended_data, frame->extended_data,
- 0, 0, frame->nb_samples,
- av_get_channel_layout_nb_channels(frame->channel_layout),
- frame->format);
+error:
+ av_frame_free(&frame);
+ return AVERROR_PATCHWELCOME;
+}
+
+static int samples_ready(AVFilterLink *link, unsigned min)
+{
+ return ff_framequeue_queued_frames(&link->fifo) &&
+ (ff_framequeue_queued_samples(&link->fifo) >= min ||
+ link->status_in);
+}
+
+static int take_samples(AVFilterLink *link, unsigned min, unsigned max,
+ AVFrame **rframe)
+{
+ AVFrame *frame0, *frame, *buf;
+ unsigned nb_samples, nb_frames, i, p;
+ int ret;
+
+ /* Note: this function relies on no format changes and must only be
+ called with enough samples. */
+ av_assert1(samples_ready(link, link->min_samples));
+ frame0 = frame = ff_framequeue_peek(&link->fifo, 0);
+ if (!link->fifo.samples_skipped && frame->nb_samples >= min && frame->nb_samples <= max) {
+ *rframe = ff_framequeue_take(&link->fifo);
+ return 0;
+ }
+ nb_frames = 0;
+ nb_samples = 0;
+ while (1) {
+ if (nb_samples + frame->nb_samples > max) {
+ if (nb_samples < min)
+ nb_samples = max;
break;
- default:
- ret = AVERROR(EINVAL);
- goto fail;
}
+ nb_samples += frame->nb_samples;
+ nb_frames++;
+ if (nb_frames == ff_framequeue_queued_frames(&link->fifo))
+ break;
+ frame = ff_framequeue_peek(&link->fifo, nb_frames);
+ }
+ buf = ff_get_audio_buffer(link, nb_samples);
+ if (!buf)
+ return AVERROR(ENOMEM);
+ ret = av_frame_copy_props(buf, frame0);
+ if (ret < 0) {
+ av_frame_free(&buf);
+ return ret;
+ }
+ buf->pts = frame0->pts;
+
+ p = 0;
+ for (i = 0; i < nb_frames; i++) {
+ frame = ff_framequeue_take(&link->fifo);
+ av_samples_copy(buf->extended_data, frame->extended_data, p, 0,
+ frame->nb_samples, link->channels, link->format);
+ p += frame->nb_samples;
av_frame_free(&frame);
- } else
- out = frame;
+ }
+ if (p < nb_samples) {
+ unsigned n = nb_samples - p;
+ frame = ff_framequeue_peek(&link->fifo, 0);
+ av_samples_copy(buf->extended_data, frame->extended_data, p, 0, n,
+ link->channels, link->format);
+ ff_framequeue_skip_samples(&link->fifo, n, link->time_base);
+ }
- return filter_frame(link, out);
+ *rframe = buf;
+ return 0;
+}
-fail:
- av_frame_free(&out);
- av_frame_free(&frame);
+static int ff_filter_frame_to_filter(AVFilterLink *link)
+{
+ AVFrame *frame = NULL;
+ AVFilterContext *dst = link->dst;
+ int ret;
+
+ av_assert1(ff_framequeue_queued_frames(&link->fifo));
+ ret = link->min_samples ?
+ ff_inlink_consume_samples(link, link->min_samples, link->max_samples, &frame) :
+ ff_inlink_consume_frame(link, &frame);
+ av_assert1(ret);
+ if (ret < 0) {
+ av_assert1(!frame);
+ return ret;
+ }
+ /* The filter will soon have received a new frame, that may allow it to
+ produce one or more: unblock its outputs. */
+ filter_unblock(dst);
+ /* AVFilterPad.filter_frame() expect frame_count_out to have the value
+ before the frame; ff_filter_frame_framed() will re-increment it. */
+ link->frame_count_out--;
+ ret = ff_filter_frame_framed(link, frame);
+ if (ret < 0 && ret != link->status_out) {
+ ff_avfilter_link_set_out_status(link, ret, AV_NOPTS_VALUE);
+ } else {
+ /* Run once again, to see if several frames were available, or if
+ the input status has also changed, or any other reason. */
+ ff_filter_set_ready(dst, 300);
+ }
+ return ret;
+}
+
+static int forward_status_change(AVFilterContext *filter, AVFilterLink *in)
+{
+ unsigned out = 0, progress = 0;
+ int ret;
+
+ av_assert0(!in->status_out);
+ if (!filter->nb_outputs) {
+ /* not necessary with the current API and sinks */
+ return 0;
+ }
+ while (!in->status_out) {
+ if (!filter->outputs[out]->status_in) {
+ progress++;
+ ret = ff_request_frame_to_filter(filter->outputs[out]);
+ if (ret < 0)
+ return ret;
+ }
+ if (++out == filter->nb_outputs) {
+ if (!progress) {
+ /* Every output already closed: input no longer interesting
+ (example: overlay in shortest mode, other input closed). */
+ ff_avfilter_link_set_out_status(in, in->status_in, in->status_in_pts);
+ return 0;
+ }
+ progress = 0;
+ out = 0;
+ }
+ }
+ ff_filter_set_ready(filter, 200);
+ return 0;
+}
+
+static int ff_filter_activate_default(AVFilterContext *filter)
+{
+ unsigned i;
+
+ for (i = 0; i < filter->nb_inputs; i++) {
+ if (samples_ready(filter->inputs[i], filter->inputs[i]->min_samples)) {
+ return ff_filter_frame_to_filter(filter->inputs[i]);
+ }
+ }
+ for (i = 0; i < filter->nb_inputs; i++) {
+ if (filter->inputs[i]->status_in && !filter->inputs[i]->status_out) {
+ av_assert1(!ff_framequeue_queued_frames(&filter->inputs[i]->fifo));
+ return forward_status_change(filter, filter->inputs[i]);
+ }
+ }
+ for (i = 0; i < filter->nb_outputs; i++) {
+ if (filter->outputs[i]->frame_wanted_out &&
+ !filter->outputs[i]->frame_blocked_in) {
+ return ff_request_frame_to_filter(filter->outputs[i]);
+ }
+ }
+ return FFERROR_NOT_READY;
+}
+
+/*
+ Filter scheduling and activation
+
+ When a filter is activated, it must:
+ - if possible, output a frame;
+ - else, if relevant, forward the input status change;
+ - else, check outputs for wanted frames and forward the requests.
+
+ The following AVFilterLink fields are used for activation:
+
+ - frame_wanted_out:
+
+ This field indicates if a frame is needed on this input of the
+ destination filter. A positive value indicates that a frame is needed
+ to process queued frames or internal data or to satisfy the
+ application; a zero value indicates that a frame is not especially
+ needed but could be processed anyway; a negative value indicates that a
+ frame would just be queued.
+
+ It is set by filters using ff_request_frame() or ff_request_no_frame(),
+ when requested by the application through a specific API or when it is
+ set on one of the outputs.
+
+ It is cleared when a frame is sent from the source using
+ ff_filter_frame().
+
+ It is also cleared when a status change is sent from the source using
+ ff_avfilter_link_set_in_status().
+
+ - frame_blocked_in:
+
+ This field means that the source filter can not generate a frame as is.
+ Its goal is to avoid repeatedly calling the request_frame() method on
+ the same link.
+
+ It is set by the framework on all outputs of a filter before activating it.
+
+ It is automatically cleared by ff_filter_frame().
+
+ It is also automatically cleared by ff_avfilter_link_set_in_status().
+
+ It is also cleared on all outputs (using filter_unblock()) when
+ something happens on an input: processing a frame or changing the
+ status.
+
+ - fifo:
+
+ Contains the frames queued on a filter input. If it contains frames and
+ frame_wanted_out is not set, then the filter can be activated. If that
+ result in the filter not able to use these frames, the filter must set
+ frame_wanted_out to ask for more frames.
+
+ - status_in and status_in_pts:
+
+ Status (EOF or error code) of the link and timestamp of the status
+ change (in link time base, same as frames) as seen from the input of
+ the link. The status change is considered happening after the frames
+ queued in fifo.
+
+ It is set by the source filter using ff_avfilter_link_set_in_status().
+
+ - status_out:
+
+ Status of the link as seen from the output of the link. The status
+ change is considered having already happened.
+
+ It is set by the destination filter using
+ ff_avfilter_link_set_out_status().
+
+ Filters are activated according to the ready field, set using the
+ ff_filter_set_ready(). Eventually, a priority queue will be used.
+ ff_filter_set_ready() is called whenever anything could cause progress to
+ be possible. Marking a filter ready when it is not is not a problem,
+ except for the small overhead it causes.
+
+ Conditions that cause a filter to be marked ready are:
+
+ - frames added on an input link;
+
+ - changes in the input or output status of an input link;
+
+ - requests for a frame on an output link;
+
+ - after any actual processing using the legacy methods (filter_frame(),
+ and request_frame() to acknowledge status changes), to run once more
+ and check if enough input was present for several frames.
+
+ Exemples of scenarios to consider:
+
+ - buffersrc: activate if frame_wanted_out to notify the application;
+ activate when the application adds a frame to push it immediately.
+
+ - testsrc: activate only if frame_wanted_out to produce and push a frame.
+
+ - concat (not at stitch points): can process a frame on any output.
+ Activate if frame_wanted_out on output to forward on the corresponding
+ input. Activate when a frame is present on input to process it
+ immediately.
+
+ - framesync: needs at least one frame on each input; extra frames on the
+ wrong input will accumulate. When a frame is first added on one input,
+ set frame_wanted_out<0 on it to avoid getting more (would trigger
+ testsrc) and frame_wanted_out>0 on the other to allow processing it.
+
+ Activation of old filters:
+
+ In order to activate a filter implementing the legacy filter_frame() and
+ request_frame() methods, perform the first possible of the following
+ actions:
+
+ - If an input has frames in fifo and frame_wanted_out == 0, dequeue a
+ frame and call filter_frame().
+
+ Ratinale: filter frames as soon as possible instead of leaving them
+ queued; frame_wanted_out < 0 is not possible since the old API does not
+ set it nor provides any similar feedback; frame_wanted_out > 0 happens
+ when min_samples > 0 and there are not enough samples queued.
+
+ - If an input has status_in set but not status_out, try to call
+ request_frame() on one of the outputs in the hope that it will trigger
+ request_frame() on the input with status_in and acknowledge it. This is
+ awkward and fragile, filters with several inputs or outputs should be
+ updated to direct activation as soon as possible.
+
+ - If an output has frame_wanted_out > 0 and not frame_blocked_in, call
+ request_frame().
+
+ Rationale: checking frame_blocked_in is necessary to avoid requesting
+ repeatedly on a blocked input if another is not blocked (example:
+ [buffersrc1][testsrc1][buffersrc2][testsrc2]concat=v=2).
+
+ TODO: respect needs_fifo and remove auto-inserted fifos.
+
+ */
+
+int ff_filter_activate(AVFilterContext *filter)
+{
+ int ret;
+
+ /* Generic timeline support is not yet implemented but should be easy */
+ av_assert1(!(filter->filter->flags & AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC &&
+ filter->filter->activate));
+ filter->ready = 0;
+ ret = filter->filter->activate ? filter->filter->activate(filter) :
+ ff_filter_activate_default(filter);
+ if (ret == FFERROR_NOT_READY)
+ ret = 0;
return ret;
}
+int ff_inlink_acknowledge_status(AVFilterLink *link, int *rstatus, int64_t *rpts)
+{
+ *rpts = link->current_pts;
+ if (ff_framequeue_queued_frames(&link->fifo))
+ return *rstatus = 0;
+ if (link->status_out)
+ return *rstatus = link->status_out;
+ if (!link->status_in)
+ return *rstatus = 0;
+ *rstatus = link->status_out = link->status_in;
+ ff_update_link_current_pts(link, link->status_in_pts);
+ *rpts = link->current_pts;
+ return 1;
+}
+
+int ff_inlink_check_available_frame(AVFilterLink *link)
+{
+ return ff_framequeue_queued_frames(&link->fifo) > 0;
+}
+
+int ff_inlink_check_available_samples(AVFilterLink *link, unsigned min)
+{
+ uint64_t samples = ff_framequeue_queued_samples(&link->fifo);
+ av_assert1(min);
+ return samples >= min || (link->status_in && samples);
+}
+
+static void consume_update(AVFilterLink *link, const AVFrame *frame)
+{
+ ff_update_link_current_pts(link, frame->pts);
+ ff_inlink_process_commands(link, frame);
+ link->dst->is_disabled = !ff_inlink_evaluate_timeline_at_frame(link, frame);
+ link->frame_count_out++;
+}
+
+int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
+{
+ AVFrame *frame;
+
+ *rframe = NULL;
+ if (!ff_inlink_check_available_frame(link))
+ return 0;
+
+ if (link->fifo.samples_skipped) {
+ frame = ff_framequeue_peek(&link->fifo, 0);
+ return ff_inlink_consume_samples(link, frame->nb_samples, frame->nb_samples, rframe);
+ }
+
+ frame = ff_framequeue_take(&link->fifo);
+ consume_update(link, frame);
+ *rframe = frame;
+ return 1;
+}
+
+int ff_inlink_consume_samples(AVFilterLink *link, unsigned min, unsigned max,
+ AVFrame **rframe)
+{
+ AVFrame *frame;
+ int ret;
+
+ av_assert1(min);
+ *rframe = NULL;
+ if (!ff_inlink_check_available_samples(link, min))
+ return 0;
+ if (link->status_in)
+ min = FFMIN(min, ff_framequeue_queued_samples(&link->fifo));
+ ret = take_samples(link, min, max, &frame);
+ if (ret < 0)
+ return ret;
+ consume_update(link, frame);
+ *rframe = frame;
+ return 1;
+}
+
+int ff_inlink_make_frame_writable(AVFilterLink *link, AVFrame **rframe)
+{
+ AVFrame *frame = *rframe;
+ AVFrame *out;
+ int ret;
+
+ if (av_frame_is_writable(frame))
+ return 0;
+ av_log(link->dst, AV_LOG_DEBUG, "Copying data in avfilter.\n");
+
+ switch (link->type) {
+ case AVMEDIA_TYPE_VIDEO:
+ out = ff_get_video_buffer(link, link->w, link->h);
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ out = ff_get_audio_buffer(link, frame->nb_samples);
+ break;
+ default:
+ return AVERROR(EINVAL);
+ }
+ if (!out)
+ return AVERROR(ENOMEM);
+
+ ret = av_frame_copy_props(out, frame);
+ if (ret < 0) {
+ av_frame_free(&out);
+ return ret;
+ }
+
+ switch (link->type) {
+ case AVMEDIA_TYPE_VIDEO:
+ av_image_copy(out->data, out->linesize, (const uint8_t **)frame->data, frame->linesize,
+ frame->format, frame->width, frame->height);
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ av_samples_copy(out->extended_data, frame->extended_data,
+ 0, 0, frame->nb_samples,
+ frame->channels,
+ frame->format);
+ break;
+ default:
+ av_assert0(!"reached");
+ }
+
+ av_frame_free(&frame);
+ *rframe = out;
+ return 0;
+}
+
+int ff_inlink_process_commands(AVFilterLink *link, const AVFrame *frame)
+{
+ AVFilterCommand *cmd = link->dst->command_queue;
+
+ while(cmd && cmd->time <= frame->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;
+ }
+ return 0;
+}
+
+int ff_inlink_evaluate_timeline_at_frame(AVFilterLink *link, const AVFrame *frame)
+{
+ AVFilterContext *dstctx = link->dst;
+ int64_t pts = frame->pts;
+ int64_t pos = frame->pkt_pos;
+
+ if (!dstctx->enable_str)
+ return 1;
+
+ dstctx->var_values[VAR_N] = link->frame_count_out;
+ dstctx->var_values[VAR_T] = pts == AV_NOPTS_VALUE ? NAN : pts * av_q2d(link->time_base);
+ dstctx->var_values[VAR_W] = link->w;
+ dstctx->var_values[VAR_H] = link->h;
+ dstctx->var_values[VAR_POS] = pos == -1 ? NAN : pos;
+
+ return fabs(av_expr_eval(dstctx->enable, dstctx->var_values, NULL)) >= 0.5;
+}
+
+void ff_inlink_request_frame(AVFilterLink *link)
+{
+ av_assert1(!link->status_in);
+ av_assert1(!link->status_out);
+ link->frame_wanted_out = 1;
+ ff_filter_set_ready(link->src, 100);
+}
+
+void ff_inlink_set_status(AVFilterLink *link, int status)
+{
+ if (link->status_out)
+ return;
+ link->frame_wanted_out = 0;
+ link->frame_blocked_in = 0;
+ ff_avfilter_link_set_out_status(link, status, AV_NOPTS_VALUE);
+ while (ff_framequeue_queued_frames(&link->fifo)) {
+ AVFrame *frame = ff_framequeue_take(&link->fifo);
+ av_frame_free(&frame);
+ }
+ if (!link->status_in)
+ link->status_in = status;
+}
+
+int ff_outlink_get_status(AVFilterLink *link)
+{
+ return link->status_in;
+}
+
const AVClass *avfilter_get_class(void)
{
return &avfilter_class;
projects / ffmpeg / blobdiff