* filter layer
* Copyright (c) 2007 Bobby Bingham
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-/* #define DEBUG */
-
+#include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/buffer.h"
+#include "libavutil/channel_layout.h"
+#include "libavutil/common.h"
+#include "libavutil/hwcontext.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/internal.h"
+#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/rational.h"
-#include "libavutil/audioconvert.h"
-#include "libavutil/imgutils.h"
+#include "libavutil/samplefmt.h"
+
+#include "audio.h"
#include "avfilter.h"
+#include "formats.h"
#include "internal.h"
+#include "video.h"
-unsigned avfilter_version(void) {
+unsigned avfilter_version(void)
+{
return LIBAVFILTER_VERSION_INT;
}
return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
}
-AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
-{
- AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef));
- if (!ret)
- return NULL;
- *ret = *ref;
- if (ref->type == AVMEDIA_TYPE_VIDEO) {
- ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps));
- if (!ret->video) {
- av_free(ret);
- return NULL;
- }
- *ret->video = *ref->video;
- } else if (ref->type == AVMEDIA_TYPE_AUDIO) {
- ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps));
- if (!ret->audio) {
- av_free(ret);
- return NULL;
- }
- *ret->audio = *ref->audio;
- }
- ret->perms &= pmask;
- ret->buf->refcount ++;
- return ret;
-}
-
-void avfilter_unref_buffer(AVFilterBufferRef *ref)
-{
- if (!ref)
- return;
- if (!(--ref->buf->refcount))
- ref->buf->free(ref->buf);
- av_free(ref->video);
- av_free(ref->audio);
- av_free(ref);
-}
-
-void avfilter_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
- AVFilterPad **pads, AVFilterLink ***links,
- AVFilterPad *newpad)
+void ff_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
+ AVFilterPad **pads, AVFilterLink ***links,
+ AVFilterPad *newpad)
{
unsigned i;
*pads = av_realloc(*pads, sizeof(AVFilterPad) * (*count + 1));
*links = av_realloc(*links, sizeof(AVFilterLink*) * (*count + 1));
- 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));
+ 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));
(*links)[idx] = NULL;
(*count)++;
- for (i = idx+1; i < *count; i++)
+ for (i = idx + 1; i < *count; i++)
if (*links[i])
(*(unsigned *)((uint8_t *) *links[i] + padidx_off))++;
}
{
AVFilterLink *link;
- if (src->output_count <= srcpad || dst->input_count <= dstpad ||
- src->outputs[srcpad] || dst->inputs[dstpad])
- return -1;
+ 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,
return AVERROR(EINVAL);
}
- src->outputs[srcpad] =
- dst-> inputs[dstpad] = link = av_mallocz(sizeof(AVFilterLink));
+ link = av_mallocz(sizeof(*link));
+ if (!link)
+ return AVERROR(ENOMEM);
+
+ src->outputs[srcpad] = dst->inputs[dstpad] = link;
link->src = src;
link->dst = dst;
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;
int ret;
unsigned dstpad_idx = link->dstpad - link->dst->input_pads;
- av_log(link->dst, AV_LOG_INFO, "auto-inserting filter '%s' "
+ av_log(link->dst, AV_LOG_VERBOSE, "auto-inserting filter '%s' "
"between the filter '%s' and the filter '%s'\n",
filt->name, link->src->name, link->dst->name);
}
/* re-hookup the link to the new destination filter we inserted */
- link->dst = filt;
- link->dstpad = &filt->input_pads[filt_srcpad_idx];
+ link->dst = filt;
+ link->dstpad = &filt->input_pads[filt_srcpad_idx];
filt->inputs[filt_srcpad_idx] = link;
/* if any information on supported media formats already exists on the
* link, we need to preserve that */
if (link->out_formats)
- avfilter_formats_changeref(&link->out_formats,
- &filt->outputs[filt_dstpad_idx]->out_formats);
+ ff_formats_changeref(&link->out_formats,
+ &filt->outputs[filt_dstpad_idx]->out_formats);
+ if (link->out_samplerates)
+ ff_formats_changeref(&link->out_samplerates,
+ &filt->outputs[filt_dstpad_idx]->out_samplerates);
+ if (link->out_channel_layouts)
+ ff_channel_layouts_changeref(&link->out_channel_layouts,
+ &filt->outputs[filt_dstpad_idx]->out_channel_layouts);
return 0;
}
unsigned i;
int ret;
- for (i = 0; i < filter->input_count; i ++) {
+ for (i = 0; i < filter->nb_inputs; i ++) {
AVFilterLink *link = filter->inputs[i];
if (!link) continue;
+ if (!link->src || !link->dst) {
+ av_log(filter, AV_LOG_ERROR,
+ "Not all input and output are properly linked (%d).\n", i);
+ return AVERROR(EINVAL);
+ }
switch (link->init_state) {
case AVLINK_INIT:
if ((ret = avfilter_config_links(link->src)) < 0)
return ret;
- if (!(config_link = link->srcpad->config_props))
- config_link = avfilter_default_config_output_link;
- if ((ret = config_link(link)) < 0)
+ if (!(config_link = link->srcpad->config_props)) {
+ if (link->src->nb_inputs != 1) {
+ av_log(link->src, AV_LOG_ERROR, "Source filters and filters "
+ "with more than one input "
+ "must set config_props() "
+ "callbacks on all outputs\n");
+ return AVERROR(EINVAL);
+ }
+ } else if ((ret = config_link(link)) < 0) {
+ av_log(link->src, AV_LOG_ERROR,
+ "Failed to configure output pad on %s\n",
+ link->src->name);
return ret;
+ }
if (link->time_base.num == 0 && link->time_base.den == 0)
- link->time_base = link->src && link->src->input_count ?
+ link->time_base = link->src->nb_inputs ?
link->src->inputs[0]->time_base : AV_TIME_BASE_Q;
- if (link->sample_aspect_ratio.num == 0 && link->sample_aspect_ratio.den == 0)
- link->sample_aspect_ratio = link->src->input_count ?
- link->src->inputs[0]->sample_aspect_ratio : (AVRational){1,1};
-
- if (link->sample_rate == 0 && link->src && link->src->input_count)
- link->sample_rate = link->src->inputs[0]->sample_rate;
+ 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};
+
+ if (link->src->nb_inputs) {
+ if (!link->frame_rate.num && !link->frame_rate.den)
+ link->frame_rate = link->src->inputs[0]->frame_rate;
+ if (!link->w)
+ link->w = link->src->inputs[0]->w;
+ if (!link->h)
+ link->h = link->src->inputs[0]->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);
+ }
+ }
- if (link->channel_layout == 0 && link->src && link->src->input_count)
- link->channel_layout = link->src->inputs[0]->channel_layout;
+ if (link->src->nb_inputs && link->src->inputs[0]->hw_frames_ctx &&
+ !(link->src->filter->flags_internal & FF_FILTER_FLAG_HWFRAME_AWARE)) {
+ av_assert0(!link->hw_frames_ctx &&
+ "should not be set by non-hwframe-aware filter");
+ link->hw_frames_ctx = av_buffer_ref(link->src->inputs[0]->hw_frames_ctx);
+ if (!link->hw_frames_ctx)
+ return AVERROR(ENOMEM);
+ }
if ((config_link = link->dstpad->config_props))
- if ((ret = config_link(link)) < 0)
+ if ((ret = config_link(link)) < 0) {
+ av_log(link->dst, AV_LOG_ERROR,
+ "Failed to configure input pad on %s\n",
+ link->dst->name);
return ret;
+ }
link->init_state = AVLINK_INIT;
}
return 0;
}
-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;
-}
-
-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",
- 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 */
- }
- if (ref->audio) {
- av_dlog(ctx, " cl:%"PRId64"d sn:%d s:%d sr:%d p:%d",
- ref->audio->channel_layout,
- ref->audio->nb_samples,
- ref->audio->size,
- ref->audio->sample_rate,
- ref->audio->planar);
- }
-
- av_dlog(ctx, "]%s", end ? "\n" : "");
-}
-
-static void ff_dlog_link(void *ctx, AVFilterLink *link, int end)
+void ff_dlog_link(void *ctx, AVFilterLink *link, int end)
{
if (link->type == AVMEDIA_TYPE_VIDEO) {
- av_dlog(ctx,
+ av_log(ctx, AV_LOG_TRACE,
"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" : "");
char buf[128];
av_get_channel_layout_string(buf, sizeof(buf), -1, link->channel_layout);
- av_dlog(ctx,
- "link[%p r:%"PRId64" cl:%s fmt:%-16s %-16s->%-16s]%s",
+ av_log(ctx, AV_LOG_TRACE,
+ "link[%p r:%d cl:%s fmt:%-16s %-16s->%-16s]%s",
link, link->sample_rate, buf,
av_get_sample_fmt_name(link->format),
link->src ? link->src->filter->name : "",
}
}
-#define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func)
-
-AVFilterBufferRef *avfilter_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
+int ff_request_frame(AVFilterLink *link)
{
- 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);
-
- if (link->dstpad->get_video_buffer)
- ret = link->dstpad->get_video_buffer(link, perms, w, h);
-
- if (!ret)
- ret = avfilter_default_get_video_buffer(link, perms, w, h);
-
- 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_DPRINTF_START(NULL, request_frame); ff_dlog_link(NULL, link, 1);
- return ret;
+ if (link->srcpad->request_frame)
+ return link->srcpad->request_frame(link);
+ else if (link->src->inputs[0])
+ return ff_request_frame(link->src->inputs[0]);
+ else
+ return AVERROR(EINVAL);
}
-AVFilterBufferRef *
-avfilter_get_video_buffer_ref_from_arrays(uint8_t *data[4], int linesize[4], int perms,
- int w, int h, enum PixelFormat format)
+int ff_poll_frame(AVFilterLink *link)
{
- AVFilterBuffer *pic = av_mallocz(sizeof(AVFilterBuffer));
- AVFilterBufferRef *picref = av_mallocz(sizeof(AVFilterBufferRef));
+ int i, min = INT_MAX;
- if (!pic || !picref)
- goto fail;
+ if (link->srcpad->poll_frame)
+ return link->srcpad->poll_frame(link);
- picref->buf = pic;
- picref->buf->free = ff_avfilter_default_free_buffer;
- if (!(picref->video = av_mallocz(sizeof(AVFilterBufferRefVideoProps))))
- goto fail;
+ for (i = 0; i < link->src->nb_inputs; i++) {
+ int val;
+ if (!link->src->inputs[i])
+ return AVERROR(EINVAL);
+ val = ff_poll_frame(link->src->inputs[i]);
+ min = FFMIN(min, val);
+ }
- pic->w = picref->video->w = w;
- pic->h = picref->video->h = h;
+ return min;
+}
- /* make sure the buffer gets read permission or it's useless for output */
- picref->perms = perms | AV_PERM_READ;
+static AVFilter *first_filter;
- pic->refcount = 1;
- picref->type = AVMEDIA_TYPE_VIDEO;
- pic->format = picref->format = format;
+#if !FF_API_NOCONST_GET_NAME
+const
+#endif
+AVFilter *avfilter_get_by_name(const char *name)
+{
+ const AVFilter *f = NULL;
- memcpy(pic->data, data, sizeof(pic->data));
- memcpy(pic->linesize, linesize, sizeof(pic->linesize));
- memcpy(picref->data, pic->data, sizeof(picref->data));
- memcpy(picref->linesize, pic->linesize, sizeof(picref->linesize));
+ if (!name)
+ return NULL;
- return picref;
+ while ((f = avfilter_next(f)))
+ if (!strcmp(f->name, name))
+ return f;
-fail:
- if (picref && picref->video)
- av_free(picref->video);
- av_free(picref);
- av_free(pic);
return NULL;
}
-AVFilterBufferRef *avfilter_get_audio_buffer(AVFilterLink *link, int perms,
- enum AVSampleFormat sample_fmt, int size,
- int64_t channel_layout, int planar)
+int avfilter_register(AVFilter *filter)
{
- AVFilterBufferRef *ret = NULL;
-
- if (link->dstpad->get_audio_buffer)
- ret = link->dstpad->get_audio_buffer(link, perms, sample_fmt, size, channel_layout, planar);
-
- if (!ret)
- ret = avfilter_default_get_audio_buffer(link, perms, sample_fmt, size, channel_layout, planar);
-
- if (ret)
- ret->type = AVMEDIA_TYPE_AUDIO;
-
- return ret;
+ AVFilter **f = &first_filter;
+ while (*f)
+ f = &(*f)->next;
+ *f = filter;
+ filter->next = NULL;
+ return 0;
}
-int avfilter_request_frame(AVFilterLink *link)
+const AVFilter *avfilter_next(const AVFilter *prev)
{
- FF_DPRINTF_START(NULL, request_frame); ff_dlog_link(NULL, link, 1);
+ return prev ? prev->next : first_filter;
+}
- if (link->srcpad->request_frame)
- return link->srcpad->request_frame(link);
- else if (link->src->inputs[0])
- return avfilter_request_frame(link->src->inputs[0]);
- else return -1;
+#if FF_API_OLD_FILTER_REGISTER
+AVFilter **av_filter_next(AVFilter **filter)
+{
+ return filter ? &(*filter)->next : &first_filter;
}
-int avfilter_poll_frame(AVFilterLink *link)
+void avfilter_uninit(void)
{
- int i, min = INT_MAX;
+}
+#endif
- if (link->srcpad->poll_frame)
- return link->srcpad->poll_frame(link);
+int avfilter_pad_count(const AVFilterPad *pads)
+{
+ int count;
- for (i = 0; i < link->src->input_count; i++) {
- int val;
- if (!link->src->inputs[i])
- return -1;
- val = avfilter_poll_frame(link->src->inputs[i]);
- min = FFMIN(min, val);
- }
+ if (!pads)
+ return 0;
- return min;
+ for (count = 0; pads->name; count++)
+ pads++;
+ return count;
}
-/* XXX: should we do the duplicating of the picture ref here, instead of
- * forcing the source filter to do it? */
-void avfilter_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
+static const char *filter_name(void *p)
{
- void (*start_frame)(AVFilterLink *, AVFilterBufferRef *);
- AVFilterPad *dst = link->dstpad;
- int perms = picref->perms;
+ AVFilterContext *filter = p;
+ return filter->filter->name;
+}
- FF_DPRINTF_START(NULL, start_frame); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " "); ff_dlog_ref(NULL, picref, 1);
+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;
+}
- if (!(start_frame = dst->start_frame))
- start_frame = avfilter_default_start_frame;
+static const AVClass *filter_child_class_next(const AVClass *prev)
+{
+ const AVFilter *f = NULL;
- if (picref->linesize[0] < 0)
- perms |= AV_PERM_NEG_LINESIZES;
- /* prepare to copy the picture if it has insufficient permissions */
- if ((dst->min_perms & perms) != dst->min_perms || dst->rej_perms & perms) {
- av_log(link->dst, AV_LOG_DEBUG,
- "frame copy needed (have perms %x, need %x, reject %x)\n",
- picref->perms,
- link->dstpad->min_perms, link->dstpad->rej_perms);
+ while (prev && (f = avfilter_next(f)))
+ if (f->priv_class == prev)
+ break;
- link->cur_buf = avfilter_get_video_buffer(link, dst->min_perms, link->w, link->h);
- link->src_buf = picref;
- avfilter_copy_buffer_ref_props(link->cur_buf, link->src_buf);
- }
- else
- link->cur_buf = picref;
+ while ((f = avfilter_next(f)))
+ if (f->priv_class)
+ return f->priv_class;
- start_frame(link, link->cur_buf);
+ return NULL;
}
-void avfilter_end_frame(AVFilterLink *link)
-{
- void (*end_frame)(AVFilterLink *);
+#define OFFSET(x) offsetof(AVFilterContext, x)
+#define FLAGS AV_OPT_FLAG_VIDEO_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" },
+ { NULL },
+};
- if (!(end_frame = link->dstpad->end_frame))
- end_frame = avfilter_default_end_frame;
+static const AVClass avfilter_class = {
+ .class_name = "AVFilter",
+ .item_name = filter_name,
+ .version = LIBAVUTIL_VERSION_INT,
+ .child_next = filter_child_next,
+ .child_class_next = filter_child_class_next,
+ .option = avfilter_options,
+};
- end_frame(link);
+static int default_execute(AVFilterContext *ctx, avfilter_action_func *func, void *arg,
+ int *ret, int nb_jobs)
+{
+ int i;
- /* 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;
+ for (i = 0; i < nb_jobs; i++) {
+ int r = func(ctx, arg, i, nb_jobs);
+ if (ret)
+ ret[i] = r;
}
+ return 0;
}
-void avfilter_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
+AVFilterContext *ff_filter_alloc(const AVFilter *filter, const char *inst_name)
{
- uint8_t *src[4], *dst[4];
- int i, j, vsub;
- void (*draw_slice)(AVFilterLink *, int, int, int);
+ AVFilterContext *ret;
- 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);
+ if (!filter)
+ return NULL;
- /* copy the slice if needed for permission reasons */
- if (link->src_buf) {
- vsub = av_pix_fmt_descriptors[link->format].log2_chroma_h;
+ ret = av_mallocz(sizeof(AVFilterContext));
+ if (!ret)
+ return NULL;
- for (i = 0; i < 4; i++) {
- 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];
- } else
- src[i] = dst[i] = NULL;
- }
+ ret->av_class = &avfilter_class;
+ ret->filter = filter;
+ ret->name = inst_name ? av_strdup(inst_name) : NULL;
+ if (filter->priv_size) {
+ ret->priv = av_mallocz(filter->priv_size);
+ if (!ret->priv)
+ goto err;
+ }
- for (i = 0; i < 4; i++) {
- int planew =
- av_image_get_linesize(link->format, link->cur_buf->video->w, i);
+ av_opt_set_defaults(ret);
+ if (filter->priv_class) {
+ *(const AVClass**)ret->priv = filter->priv_class;
+ av_opt_set_defaults(ret->priv);
+ }
- if (!src[i]) continue;
+ ret->internal = av_mallocz(sizeof(*ret->internal));
+ if (!ret->internal)
+ goto err;
+ ret->internal->execute = default_execute;
+
+ 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;
+ memcpy(ret->input_pads, filter->inputs, sizeof(AVFilterPad) * ret->nb_inputs);
+ ret->inputs = av_mallocz(sizeof(AVFilterLink*) * ret->nb_inputs);
+ if (!ret->inputs)
+ goto err;
+ }
- 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];
- }
- }
+ 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)
+ goto err;
+ memcpy(ret->output_pads, filter->outputs, sizeof(AVFilterPad) * ret->nb_outputs);
+ ret->outputs = av_mallocz(sizeof(AVFilterLink*) * ret->nb_outputs);
+ if (!ret->outputs)
+ goto err;
}
- if (!(draw_slice = link->dstpad->draw_slice))
- draw_slice = avfilter_default_draw_slice;
- draw_slice(link, y, h, slice_dir);
+ return ret;
+
+err:
+ av_freep(&ret->inputs);
+ av_freep(&ret->input_pads);
+ ret->nb_inputs = 0;
+ av_freep(&ret->outputs);
+ av_freep(&ret->output_pads);
+ ret->nb_outputs = 0;
+ av_freep(&ret->priv);
+ av_freep(&ret->internal);
+ av_free(ret);
+ return NULL;
}
-void avfilter_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
+#if FF_API_AVFILTER_OPEN
+int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name)
{
- void (*filter_samples)(AVFilterLink *, AVFilterBufferRef *);
- AVFilterPad *dst = link->dstpad;
+ *filter_ctx = ff_filter_alloc(filter, inst_name);
+ return *filter_ctx ? 0 : AVERROR(ENOMEM);
+}
+#endif
- FF_DPRINTF_START(NULL, filter_samples); ff_dlog_link(NULL, link, 1);
+static void free_link(AVFilterLink *link)
+{
+ if (!link)
+ return;
- if (!(filter_samples = dst->filter_samples))
- filter_samples = avfilter_default_filter_samples;
+ if (link->src)
+ link->src->outputs[link->srcpad - link->src->output_pads] = NULL;
+ if (link->dst)
+ link->dst->inputs[link->dstpad - link->dst->input_pads] = NULL;
- /* prepare to copy the samples if the buffer has insufficient permissions */
- if ((dst->min_perms & samplesref->perms) != dst->min_perms ||
- dst->rej_perms & samplesref->perms) {
+ av_buffer_unref(&link->hw_frames_ctx);
- av_log(link->dst, AV_LOG_DEBUG,
- "Copying audio data in avfilter (have perms %x, need %x, reject %x)\n",
- samplesref->perms, link->dstpad->min_perms, link->dstpad->rej_perms);
+ ff_formats_unref(&link->in_formats);
+ ff_formats_unref(&link->out_formats);
+ ff_formats_unref(&link->in_samplerates);
+ 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);
+}
- link->cur_buf = avfilter_default_get_audio_buffer(link, dst->min_perms,
- samplesref->format,
- samplesref->audio->size,
- samplesref->audio->channel_layout,
- samplesref->audio->planar);
- link->cur_buf->pts = samplesref->pts;
- link->cur_buf->audio->sample_rate = samplesref->audio->sample_rate;
+void avfilter_free(AVFilterContext *filter)
+{
+ int i;
- /* Copy actual data into new samples buffer */
- memcpy(link->cur_buf->data[0], samplesref->data[0], samplesref->audio->size);
+ if (filter->graph)
+ ff_filter_graph_remove_filter(filter->graph, filter);
- avfilter_unref_buffer(samplesref);
- } else
- link->cur_buf = samplesref;
+ if (filter->filter->uninit)
+ filter->filter->uninit(filter);
- filter_samples(link, link->cur_buf);
-}
+ for (i = 0; i < filter->nb_inputs; i++) {
+ free_link(filter->inputs[i]);
+ }
+ for (i = 0; i < filter->nb_outputs; i++) {
+ free_link(filter->outputs[i]);
+ }
-#define MAX_REGISTERED_AVFILTERS_NB 64
+ if (filter->filter->priv_class)
+ av_opt_free(filter->priv);
-static AVFilter *registered_avfilters[MAX_REGISTERED_AVFILTERS_NB + 1];
+ av_buffer_unref(&filter->hw_device_ctx);
-static int next_registered_avfilter_idx = 0;
+ av_freep(&filter->name);
+ av_freep(&filter->input_pads);
+ av_freep(&filter->output_pads);
+ av_freep(&filter->inputs);
+ av_freep(&filter->outputs);
+ av_freep(&filter->priv);
+ av_freep(&filter->internal);
+ av_free(filter);
+}
-AVFilter *avfilter_get_by_name(const char *name)
+/* 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 i;
+ 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;
- for (i = 0; registered_avfilters[i]; i++)
- if (!strcmp(registered_avfilters[i]->name, name))
- return registered_avfilters[i];
+ val = av_get_token(&p, ":");
+ if (!val)
+ return AVERROR(ENOMEM);
- return NULL;
-}
+ av_dict_set(options, o->name, val, 0);
-int avfilter_register(AVFilter *filter)
-{
- if (next_registered_avfilter_idx == MAX_REGISTERED_AVFILTERS_NB)
- return -1;
+ av_freep(&val);
+ if (*p)
+ p++;
+ }
- registered_avfilters[next_registered_avfilter_idx++] = filter;
return 0;
}
-AVFilter **av_filter_next(AVFilter **filter)
+#if FF_API_AVFILTER_INIT_FILTER
+int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque)
{
- return filter ? ++filter : ®istered_avfilters[0];
+ return avfilter_init_str(filter, args);
}
+#endif
-void avfilter_uninit(void)
+int avfilter_init_dict(AVFilterContext *ctx, AVDictionary **options)
{
- memset(registered_avfilters, 0, sizeof(registered_avfilters));
- next_registered_avfilter_idx = 0;
-}
+ int ret = 0;
-static int pad_count(const AVFilterPad *pads)
-{
- int count;
+ ret = av_opt_set_dict(ctx, options);
+ if (ret < 0) {
+ av_log(ctx, AV_LOG_ERROR, "Error applying generic filter options.\n");
+ return ret;
+ }
- for(count = 0; pads->name; count ++) pads ++;
- return count;
+ if (ctx->filter->flags & AVFILTER_FLAG_SLICE_THREADS &&
+ ctx->thread_type & ctx->graph->thread_type & AVFILTER_THREAD_SLICE &&
+ ctx->graph->internal->thread_execute) {
+ ctx->thread_type = AVFILTER_THREAD_SLICE;
+ ctx->internal->execute = ctx->graph->internal->thread_execute;
+ } else {
+ ctx->thread_type = 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;
}
-static const char *filter_name(void *p)
+int avfilter_init_str(AVFilterContext *filter, const char *args)
{
- AVFilterContext *filter = p;
- return filter->filter->name;
-}
+ AVDictionary *options = NULL;
+ AVDictionaryEntry *e;
+ int ret = 0;
+
+ 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);
+ }
-static const AVClass avfilter_class = {
- "AVFilter",
- filter_name,
- NULL,
- LIBAVUTIL_VERSION_INT,
-};
+#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;
-int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name)
-{
- AVFilterContext *ret;
- *filter_ctx = NULL;
+ 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 (!filter)
- return AVERROR(EINVAL);
+ if (!copy) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
- ret = av_mallocz(sizeof(AVFilterContext));
+ 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;
+ }
- ret->av_class = &avfilter_class;
- ret->filter = filter;
- ret->name = inst_name ? av_strdup(inst_name) : NULL;
- ret->priv = av_mallocz(filter->priv_size);
+ 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++;
+ }
- ret->input_count = pad_count(filter->inputs);
- if (ret->input_count) {
- ret->input_pads = av_malloc(sizeof(AVFilterPad) * ret->input_count);
- memcpy(ret->input_pads, filter->inputs, sizeof(AVFilterPad) * ret->input_count);
- ret->inputs = av_mallocz(sizeof(AVFilterLink*) * ret->input_count);
+ 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->output_count = pad_count(filter->outputs);
- if (ret->output_count) {
- ret->output_pads = av_malloc(sizeof(AVFilterPad) * ret->output_count);
- memcpy(ret->output_pads, filter->outputs, sizeof(AVFilterPad) * ret->output_count);
- ret->outputs = av_mallocz(sizeof(AVFilterLink*) * ret->output_count);
+ 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;
}
- *filter_ctx = ret;
- return 0;
+fail:
+ av_dict_free(&options);
+
+ return ret;
}
-void avfilter_free(AVFilterContext *filter)
+const char *avfilter_pad_get_name(const AVFilterPad *pads, int pad_idx)
{
- int i;
- AVFilterLink *link;
+ return pads[pad_idx].name;
+}
- if (filter->filter->uninit)
- filter->filter->uninit(filter);
+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);
+}
- for (i = 0; i < filter->input_count; i++) {
- if ((link = filter->inputs[i])) {
- if (link->src)
- link->src->outputs[link->srcpad - link->src->output_pads] = NULL;
- avfilter_formats_unref(&link->in_formats);
- avfilter_formats_unref(&link->out_formats);
+int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
+{
+ int (*filter_frame)(AVFilterLink *, AVFrame *);
+ 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);
+ goto fail;
}
- av_freep(&link);
- }
- for (i = 0; i < filter->output_count; i++) {
- if ((link = filter->outputs[i])) {
- if (link->dst)
- link->dst->inputs[link->dstpad - link->dst->input_pads] = NULL;
- avfilter_formats_unref(&link->in_formats);
- avfilter_formats_unref(&link->out_formats);
+ if (!out) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
}
- av_freep(&link);
- }
- av_freep(&filter->name);
- av_freep(&filter->input_pads);
- av_freep(&filter->output_pads);
- av_freep(&filter->inputs);
- av_freep(&filter->outputs);
- av_freep(&filter->priv);
- av_free(filter);
-}
+ ret = av_frame_copy_props(out, frame);
+ if (ret < 0)
+ goto fail;
+
+ 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:
+ ret = AVERROR(EINVAL);
+ goto fail;
+ }
-int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque)
-{
- int ret=0;
+ av_frame_free(&frame);
+ } else
+ out = frame;
+
+ return filter_frame(link, out);
- if (filter->filter->init)
- ret = filter->filter->init(filter, args, opaque);
+fail:
+ av_frame_free(&out);
+ av_frame_free(&frame);
return ret;
}
+const AVClass *avfilter_get_class(void)
+{
+ return &avfilter_class;
+}
projects / ffmpeg / blobdiff