* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-/* #define DEBUG */
-
+#include "libavutil/avstring.h"
+#include "libavutil/channel_layout.h"
+#include "libavutil/common.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/rational.h"
-#include "libavutil/audioconvert.h"
+#include "libavutil/samplefmt.h"
+#include "audio.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
+#include "video.h"
unsigned avfilter_version(void) {
return LIBAVFILTER_VERSION_INT;
link->srcpad = &src->output_pads[srcpad];
link->dstpad = &dst->input_pads[dstpad];
link->type = src->output_pads[srcpad].type;
- assert(PIX_FMT_NONE == -1 && AV_SAMPLE_FMT_NONE == -1);
+ assert(AV_PIX_FMT_NONE == -1 && AV_SAMPLE_FMT_NONE == -1);
link->format = -1;
return 0;
av_dlog(ctx,
"link[%p s:%dx%d fmt:%-16s %-16s->%-16s]%s",
link, link->w, link->h,
- av_pix_fmt_descriptors[link->format].name,
+ av_get_pix_fmt_name(link->format),
link->src ? link->src->filter->name : "",
link->dst ? link->dst->filter->name : "",
end ? "\n" : "");
return min;
}
-#define MAX_REGISTERED_AVFILTERS_NB 64
-
-static AVFilter *registered_avfilters[MAX_REGISTERED_AVFILTERS_NB + 1];
-
-static int next_registered_avfilter_idx = 0;
+static AVFilter *first_filter;
AVFilter *avfilter_get_by_name(const char *name)
{
- int i;
+ AVFilter *f = NULL;
- for (i = 0; registered_avfilters[i]; i++)
- if (!strcmp(registered_avfilters[i]->name, name))
- return registered_avfilters[i];
+ if (!name)
+ return NULL;
+
+ while ((f = avfilter_next(f)))
+ if (!strcmp(f->name, name))
+ return f;
return NULL;
}
int avfilter_register(AVFilter *filter)
{
- if (next_registered_avfilter_idx == MAX_REGISTERED_AVFILTERS_NB)
- return -1;
-
- registered_avfilters[next_registered_avfilter_idx++] = filter;
+ AVFilter **f = &first_filter;
+ while (*f)
+ f = &(*f)->next;
+ *f = filter;
+ filter->next = NULL;
return 0;
}
+const AVFilter *avfilter_next(const AVFilter *prev)
+{
+ return prev ? prev->next : first_filter;
+}
+
+#if FF_API_OLD_FILTER_REGISTER
AVFilter **av_filter_next(AVFilter **filter)
{
- return filter ? ++filter : ®istered_avfilters[0];
+ return filter ? &(*filter)->next : &first_filter;
}
void avfilter_uninit(void)
{
- memset(registered_avfilters, 0, sizeof(registered_avfilters));
- next_registered_avfilter_idx = 0;
}
+#endif
-static int pad_count(const AVFilterPad *pads)
+int avfilter_pad_count(const AVFilterPad *pads)
{
int count;
+ if (!pads)
+ return 0;
+
for(count = 0; pads->name; count ++) pads ++;
return count;
}
return filter->filter->name;
}
+static void *filter_child_next(void *obj, void *prev)
+{
+ AVFilterContext *ctx = obj;
+ if (!prev && ctx->filter && ctx->filter->priv_class && ctx->priv)
+ return ctx->priv;
+ return NULL;
+}
+
+static const AVClass *filter_child_class_next(const AVClass *prev)
+{
+ AVFilter *f = NULL;
+
+ while (prev && (f = avfilter_next(f)))
+ if (f->priv_class == prev)
+ break;
+
+ while ((f = avfilter_next(f)))
+ if (f->priv_class)
+ return f->priv_class;
+
+ return NULL;
+}
+
static const AVClass avfilter_class = {
- "AVFilter",
- filter_name,
- NULL,
- LIBAVUTIL_VERSION_INT,
+ .class_name = "AVFilter",
+ .item_name = filter_name,
+ .version = LIBAVUTIL_VERSION_INT,
+ .child_next = filter_child_next,
+ .child_class_next = filter_child_class_next,
};
-int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name)
+AVFilterContext *ff_filter_alloc(const AVFilter *filter, const char *inst_name)
{
AVFilterContext *ret;
- *filter_ctx = NULL;
if (!filter)
- return AVERROR(EINVAL);
+ return NULL;
ret = av_mallocz(sizeof(AVFilterContext));
if (!ret)
- return AVERROR(ENOMEM);
+ return NULL;
ret->av_class = &avfilter_class;
ret->filter = filter;
goto err;
}
- ret->nb_inputs = pad_count(filter->inputs);
+ if (filter->priv_class) {
+ *(const AVClass**)ret->priv = filter->priv_class;
+ av_opt_set_defaults(ret->priv);
+ }
+
+ ret->nb_inputs = avfilter_pad_count(filter->inputs);
if (ret->nb_inputs ) {
ret->input_pads = av_malloc(sizeof(AVFilterPad) * ret->nb_inputs);
if (!ret->input_pads)
goto err;
}
- ret->nb_outputs = pad_count(filter->outputs);
+ ret->nb_outputs = avfilter_pad_count(filter->outputs);
if (ret->nb_outputs) {
ret->output_pads = av_malloc(sizeof(AVFilterPad) * ret->nb_outputs);
if (!ret->output_pads)
ret->input_count = ret->nb_inputs;
#endif
- *filter_ctx = ret;
- return 0;
+ return ret;
err:
av_freep(&ret->inputs);
ret->nb_outputs = 0;
av_freep(&ret->priv);
av_free(ret);
- return AVERROR(ENOMEM);
+ return NULL;
}
+#if FF_API_AVFILTER_OPEN
+int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name)
+{
+ *filter_ctx = ff_filter_alloc(filter, inst_name);
+ return *filter_ctx ? 0 : AVERROR(ENOMEM);
+}
+#endif
+
void avfilter_free(AVFilterContext *filter)
{
int i;
AVFilterLink *link;
+ if (filter->graph)
+ ff_filter_graph_remove_filter(filter->graph, filter);
+
if (filter->filter->uninit)
filter->filter->uninit(filter);
av_freep(&link);
}
+ if (filter->filter->priv_class)
+ av_opt_free(filter->priv);
+
av_freep(&filter->name);
av_freep(&filter->input_pads);
av_freep(&filter->output_pads);
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)
+{
+ const AVOption *o = NULL;
+ const char *p = args;
+ char *val;
+
+ 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->type == AV_OPT_TYPE_CONST)
+ continue;
+
+ val = av_get_token(&p, ":");
+ if (!val)
+ return AVERROR(ENOMEM);
+
+ av_dict_set(options, o->name, val, 0);
+
+ av_freep(&val);
+ if (*p)
+ p++;
+ }
+
+ return 0;
+}
+
+#if FF_API_AVFILTER_INIT_FILTER
int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque)
{
+ return avfilter_init_str(filter, args);
+}
+#endif
+
+int avfilter_init_dict(AVFilterContext *ctx, AVDictionary **options)
+{
+ int ret = 0;
+
+ if (ctx->filter->priv_class) {
+ ret = av_opt_set_dict(ctx->priv, options);
+ if (ret < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Error applying options to the filter.\n");
+ return ret;
+ }
+ }
+
+ if (ctx->filter->init)
+ ret = ctx->filter->init(ctx);
+ else if (ctx->filter->init_dict)
+ ret = ctx->filter->init_dict(ctx, options);
+
+ return ret;
+}
+
+int avfilter_init_str(AVFilterContext *filter, const char *args)
+{
+ AVDictionary *options = NULL;
+ AVDictionaryEntry *e;
int ret=0;
- if (filter->filter->init)
- ret = filter->filter->init(filter, args);
+ if (args && *args) {
+ if (!filter->filter->priv_class) {
+ av_log(filter, AV_LOG_ERROR, "This filter does not take any "
+ "options, but options were provided: %s.\n", args);
+ return AVERROR(EINVAL);
+ }
+
+#if FF_API_OLD_FILTER_OPTS
+ if (!strcmp(filter->filter->name, "scale") &&
+ strchr(args, ':') && strchr(args, ':') < strchr(args, '=')) {
+ /* old w:h:flags=<flags> syntax */
+ char *copy = av_strdup(args);
+ char *p;
+
+ av_log(filter, AV_LOG_WARNING, "The <w>:<h>:flags=<flags> option "
+ "syntax is deprecated. Use either <w>:<h>:<flags> or "
+ "w=<w>:h=<h>:flags=<flags>.\n");
+
+ if (!copy) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ p = strrchr(copy, ':');
+ if (p) {
+ *p++ = 0;
+ ret = av_dict_parse_string(&options, p, "=", ":", 0);
+ }
+ if (ret >= 0)
+ ret = process_unnamed_options(filter, &options, copy);
+ av_freep(©);
+
+ if (ret < 0)
+ goto fail;
+ } else
+#endif
+
+ if (strchr(args, '=')) {
+ /* assume a list of key1=value1:key2=value2:... */
+ ret = av_dict_parse_string(&options, args, "=", ":", 0);
+ if (ret < 0)
+ goto fail;
+#if FF_API_OLD_FILTER_OPTS
+ } else 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")) {
+ /* 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
+
+ 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++;
+ }
+
+ if (strchr(p, ':')) {
+ av_log(filter, AV_LOG_WARNING, "This syntax is deprecated. Use "
+ "'|' to separate the list items.\n");
+ }
+
+ while ((p = strchr(p, ':')))
+ *p++ = '|';
+
+ ret = process_unnamed_options(filter, &options, copy);
+ av_freep(©);
+
+ if (ret < 0)
+ goto fail;
+#endif
+ } else {
+ ret = process_unnamed_options(filter, &options, args);
+ if (ret < 0)
+ goto fail;
+ }
+ }
+
+ ret = avfilter_init_dict(filter, &options);
+ if (ret < 0)
+ goto fail;
+
+ if ((e = av_dict_get(options, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
+ av_log(filter, AV_LOG_ERROR, "No such option: %s.\n", e->key);
+ ret = AVERROR_OPTION_NOT_FOUND;
+ goto fail;
+ }
+
+fail:
+ av_dict_free(&options);
+
return ret;
}
-const char *avfilter_pad_get_name(AVFilterPad *pads, int pad_idx)
+const char *avfilter_pad_get_name(const AVFilterPad *pads, int pad_idx)
{
return pads[pad_idx].name;
}
-enum AVMediaType avfilter_pad_get_type(AVFilterPad *pads, int pad_idx)
+enum AVMediaType avfilter_pad_get_type(const AVFilterPad *pads, int pad_idx)
{
return pads[pad_idx].type;
}
+
+static int default_filter_frame(AVFilterLink *link, AVFrame *frame)
+{
+ return ff_filter_frame(link->dst->outputs[0], frame);
+}
+
+int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
+{
+ int (*filter_frame)(AVFilterLink *, AVFrame *);
+ AVFilterPad *dst = link->dstpad;
+ AVFrame *out;
+
+ 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: return AVERROR(EINVAL);
+ }
+ if (!out) {
+ av_frame_free(&frame);
+ return AVERROR(ENOMEM);
+ }
+ av_frame_copy_props(out, frame);
+
+ 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);
+ break;
+ default: return AVERROR(EINVAL);
+ }
+
+ av_frame_free(&frame);
+ } else
+ out = frame;
+
+ return filter_frame(link, out);
+}
+
+const AVClass *avfilter_get_class(void)
+{
+ return &avfilter_class;
+}
projects / ffmpeg / blobdiff