/*
* Filter layer - default implementations
- * copyright (c) 2007 Bobby Bingham
+ * 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
*/
-#include "libavcore/imgutils.h"
+#include "libavutil/audioconvert.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/samplefmt.h"
+
+#include "audio.h"
#include "avfilter.h"
+#include "internal.h"
/* TODO: buffer pool. see comment for avfilter_default_get_video_buffer() */
-static void avfilter_default_free_buffer(AVFilterBuffer *ptr)
+void ff_avfilter_default_free_buffer(AVFilterBuffer *ptr)
{
+ if (ptr->extended_data != ptr->data)
+ av_freep(&ptr->extended_data);
av_free(ptr->data[0]);
av_free(ptr);
}
* alloc & free cycle currently implemented. */
AVFilterBufferRef *avfilter_default_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
{
- AVFilterBuffer *pic = av_mallocz(sizeof(AVFilterBuffer));
- AVFilterBufferRef *ref = av_mallocz(sizeof(AVFilterBufferRef));
- int i, tempsize;
- char *buf;
-
- ref->buf = pic;
- ref->video = av_mallocz(sizeof(AVFilterBufferRefVideoProps));
- ref->video->w = w;
- ref->video->h = h;
-
- /* make sure the buffer gets read permission or it's useless for output */
- ref->perms = perms | AV_PERM_READ;
-
- pic->refcount = 1;
- ref->format = link->format;
- pic->free = avfilter_default_free_buffer;
- av_fill_image_linesizes(pic->linesize, ref->format, ref->video->w);
-
- for (i=0; i<4;i++)
- pic->linesize[i] = FFALIGN(pic->linesize[i], 16);
-
- tempsize = av_fill_image_pointers(pic->data, ref->format, ref->video->h, NULL, pic->linesize);
- buf = av_malloc(tempsize + 16); // +2 is needed for swscaler, +16 to be
- // SIMD-friendly
- av_fill_image_pointers(pic->data, ref->format, ref->video->h, buf, pic->linesize);
+ int linesize[4];
+ uint8_t *data[4];
+ AVFilterBufferRef *picref = NULL;
+
+ // +2 is needed for swscaler, +16 to be SIMD-friendly
+ if (av_image_alloc(data, linesize, w, h, link->format, 16) < 0)
+ return NULL;
+
+ picref = avfilter_get_video_buffer_ref_from_arrays(data, linesize,
+ perms, w, h, link->format);
+ if (!picref) {
+ av_free(data[0]);
+ return NULL;
+ }
- memcpy(ref->data, pic->data, 4*sizeof(pic->data[0]));
- memcpy(ref->linesize, pic->linesize, 4*sizeof(pic->linesize[0]));
+ return picref;
+}
- return ref;
+AVFilterBufferRef *ff_default_get_audio_buffer(AVFilterLink *link, int perms,
+ int nb_samples)
+{
+ AVFilterBufferRef *samplesref = NULL;
+ uint8_t **data;
+ int planar = av_sample_fmt_is_planar(link->format);
+ int nb_channels = av_get_channel_layout_nb_channels(link->channel_layout);
+ int planes = planar ? nb_channels : 1;
+ int linesize;
+
+ if (!(data = av_mallocz(sizeof(*data) * planes)))
+ goto fail;
+
+ if (av_samples_alloc(data, &linesize, nb_channels, nb_samples, link->format, 0) < 0)
+ goto fail;
+
+ samplesref = avfilter_get_audio_buffer_ref_from_arrays(data, linesize, perms,
+ nb_samples, link->format,
+ link->channel_layout);
+ if (!samplesref)
+ goto fail;
+
+ av_freep(&data);
+
+fail:
+ if (data)
+ av_freep(&data[0]);
+ av_freep(&data);
+ return samplesref;
}
-void avfilter_default_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
+void avfilter_default_start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
{
- AVFilterLink *out = NULL;
+ AVFilterLink *outlink = NULL;
- if(link->dst->output_count)
- out = link->dst->outputs[0];
+ if (inlink->dst->output_count)
+ outlink = inlink->dst->outputs[0];
- if(out) {
- out->out_buf = avfilter_get_video_buffer(out, AV_PERM_WRITE, out->w, out->h);
- avfilter_copy_buffer_ref_props(out->out_buf, picref);
- avfilter_start_frame(out, avfilter_ref_buffer(out->out_buf, ~0));
+ if (outlink) {
+ outlink->out_buf = avfilter_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
+ avfilter_copy_buffer_ref_props(outlink->out_buf, picref);
+ avfilter_start_frame(outlink, avfilter_ref_buffer(outlink->out_buf, ~0));
}
}
-void avfilter_default_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
+void avfilter_default_draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
{
- AVFilterLink *out = NULL;
+ AVFilterLink *outlink = NULL;
- if(link->dst->output_count)
- out = link->dst->outputs[0];
+ if (inlink->dst->output_count)
+ outlink = inlink->dst->outputs[0];
- if(out)
- avfilter_draw_slice(out, y, h, slice_dir);
+ if (outlink)
+ avfilter_draw_slice(outlink, y, h, slice_dir);
}
-void avfilter_default_end_frame(AVFilterLink *link)
+void avfilter_default_end_frame(AVFilterLink *inlink)
{
- AVFilterLink *out = NULL;
+ AVFilterLink *outlink = NULL;
- if(link->dst->output_count)
- out = link->dst->outputs[0];
+ if (inlink->dst->output_count)
+ outlink = inlink->dst->outputs[0];
- avfilter_unref_buffer(link->cur_buf);
- link->cur_buf = NULL;
+ avfilter_unref_buffer(inlink->cur_buf);
+ inlink->cur_buf = NULL;
- if(out) {
- if(out->out_buf) {
- avfilter_unref_buffer(out->out_buf);
- out->out_buf = NULL;
+ if (outlink) {
+ if (outlink->out_buf) {
+ avfilter_unref_buffer(outlink->out_buf);
+ outlink->out_buf = NULL;
}
- avfilter_end_frame(out);
+ avfilter_end_frame(outlink);
}
}
+/* FIXME: samplesref is same as link->cur_buf. Need to consider removing the redundant parameter. */
+void ff_default_filter_samples(AVFilterLink *inlink, AVFilterBufferRef *samplesref)
+{
+ AVFilterLink *outlink = NULL;
+
+ if (inlink->dst->output_count)
+ outlink = inlink->dst->outputs[0];
+
+ if (outlink) {
+ outlink->out_buf = ff_default_get_audio_buffer(inlink, AV_PERM_WRITE,
+ samplesref->audio->nb_samples);
+ outlink->out_buf->pts = samplesref->pts;
+ outlink->out_buf->audio->sample_rate = samplesref->audio->sample_rate;
+ ff_filter_samples(outlink, avfilter_ref_buffer(outlink->out_buf, ~0));
+ avfilter_unref_buffer(outlink->out_buf);
+ outlink->out_buf = NULL;
+ }
+ avfilter_unref_buffer(samplesref);
+ inlink->cur_buf = NULL;
+}
+
/**
* default config_link() implementation for output video links to simplify
* the implementation of one input one output video filters */
int avfilter_default_config_output_link(AVFilterLink *link)
{
- if(link->src->input_count && link->src->inputs[0]) {
- link->w = link->src->inputs[0]->w;
- link->h = link->src->inputs[0]->h;
+ if (link->src->input_count && link->src->inputs[0]) {
+ if (link->type == AVMEDIA_TYPE_VIDEO) {
+ link->w = link->src->inputs[0]->w;
+ link->h = link->src->inputs[0]->h;
+ link->time_base = link->src->inputs[0]->time_base;
+ } else if (link->type == AVMEDIA_TYPE_AUDIO) {
+ link->channel_layout = link->src->inputs[0]->channel_layout;
+ link->sample_rate = link->src->inputs[0]->sample_rate;
+ }
} else {
/* XXX: any non-simple filter which would cause this branch to be taken
* really should implement its own config_props() for this link. */
{
int count = 0, i;
- for(i = 0; i < ctx->input_count; i ++) {
- if(ctx->inputs[i]) {
+ for (i = 0; i < ctx->input_count; i++) {
+ if (ctx->inputs[i]) {
avfilter_formats_ref(formats, &ctx->inputs[i]->out_formats);
- count ++;
+ count++;
}
}
- for(i = 0; i < ctx->output_count; i ++) {
- if(ctx->outputs[i]) {
+ for (i = 0; i < ctx->output_count; i++) {
+ if (ctx->outputs[i]) {
avfilter_formats_ref(formats, &ctx->outputs[i]->in_formats);
- count ++;
+ count++;
}
}
- if(!count) {
+ if (!count) {
av_free(formats->formats);
av_free(formats->refs);
av_free(formats);
int avfilter_default_query_formats(AVFilterContext *ctx)
{
- enum AVMediaType type = ctx->inputs [0] ? ctx->inputs [0]->type :
- ctx->outputs[0] ? ctx->outputs[0]->type :
+ enum AVMediaType type = ctx->inputs && ctx->inputs [0] ? ctx->inputs [0]->type :
+ ctx->outputs && ctx->outputs[0] ? ctx->outputs[0]->type :
AVMEDIA_TYPE_VIDEO;
avfilter_set_common_formats(ctx, avfilter_all_formats(type));
avfilter_end_frame(link->dst->outputs[0]);
}
+void ff_null_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
+{
+ ff_filter_samples(link->dst->outputs[0], samplesref);
+}
+
AVFilterBufferRef *avfilter_null_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
{
return avfilter_get_video_buffer(link->dst->outputs[0], perms, w, h);
}
+AVFilterBufferRef *ff_null_get_audio_buffer(AVFilterLink *link, int perms,
+ int nb_samples)
+{
+ return ff_get_audio_buffer(link->dst->outputs[0], perms, nb_samples);
+}
projects / ffmpeg / blobdiff