/*
* filter layer
- * 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
*/
/* #define DEBUG */
-#include "libavcodec/imgconvert.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/rational.h"
+#include "libavutil/audioconvert.h"
+#include "libavutil/imgutils.h"
#include "avfilter.h"
+#include "internal.h"
unsigned avfilter_version(void) {
return LIBAVFILTER_VERSION_INT;
}
-/** helper macros to get the in/out pad on the dst/src filter */
-#define link_dpad(link) link->dst-> input_pads[link->dstpad]
-#define link_spad(link) link->src->output_pads[link->srcpad]
+const char *avfilter_configuration(void)
+{
+ return LIBAV_CONFIGURATION;
+}
+
+const char *avfilter_license(void)
+{
+#define LICENSE_PREFIX "libavfilter license: "
+ return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
+}
-AVFilterPicRef *avfilter_ref_pic(AVFilterPicRef *ref, int pmask)
+AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
{
- AVFilterPicRef *ret = av_malloc(sizeof(AVFilterPicRef));
+ 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->pic->refcount ++;
+ ret->buf->refcount ++;
return ret;
}
-void avfilter_unref_pic(AVFilterPicRef *ref)
+void avfilter_unref_buffer(AVFilterBufferRef *ref)
{
- if(!(--ref->pic->refcount))
- ref->pic->free(ref->pic);
+ if (!ref)
+ return;
+ if (!(--ref->buf->refcount))
+ ref->buf->free(ref->buf);
+ av_free(ref->video);
+ av_free(ref->audio);
av_free(ref);
}
memcpy(*pads+idx, newpad, sizeof(AVFilterPad));
(*links)[idx] = NULL;
- (*count) ++;
- for(i = idx+1; i < *count; i ++)
- if(*links[i])
- (*(unsigned *)((uint8_t *) *links[i] + padidx_off)) ++;
+ (*count)++;
+ for (i = idx+1; i < *count; i++)
+ if (*links[i])
+ (*(unsigned *)((uint8_t *) *links[i] + padidx_off))++;
}
int avfilter_link(AVFilterContext *src, unsigned srcpad,
{
AVFilterLink *link;
- if(src->output_count <= srcpad || dst->input_count <= dstpad ||
- src->outputs[srcpad] || dst->inputs[dstpad])
+ if (src->output_count <= srcpad || dst->input_count <= dstpad ||
+ src->outputs[srcpad] || dst->inputs[dstpad])
return -1;
+ 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);
+ return AVERROR(EINVAL);
+ }
+
src->outputs[srcpad] =
dst-> inputs[dstpad] = link = av_mallocz(sizeof(AVFilterLink));
link->src = src;
link->dst = dst;
- link->srcpad = srcpad;
- link->dstpad = dstpad;
- link->format = PIX_FMT_NONE;
+ 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);
+ link->format = -1;
return 0;
}
int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt,
- unsigned in, unsigned out)
+ unsigned filt_srcpad_idx, unsigned filt_dstpad_idx)
{
- av_log(link->dst, AV_LOG_INFO, "auto-inserting filter '%s'\n",
- filt->filter->name);
+ int ret;
+ unsigned dstpad_idx = link->dstpad - link->dst->input_pads;
+
+ av_log(link->dst, AV_LOG_INFO, "auto-inserting filter '%s' "
+ "between the filter '%s' and the filter '%s'\n",
+ filt->name, link->src->name, link->dst->name);
- link->dst->inputs[link->dstpad] = NULL;
- if(avfilter_link(filt, out, link->dst, link->dstpad)) {
+ link->dst->inputs[dstpad_idx] = NULL;
+ if ((ret = avfilter_link(filt, filt_dstpad_idx, link->dst, dstpad_idx)) < 0) {
/* failed to link output filter to new filter */
- link->dst->inputs[link->dstpad] = link;
- return -1;
+ link->dst->inputs[dstpad_idx] = link;
+ return ret;
}
/* re-hookup the link to the new destination filter we inserted */
link->dst = filt;
- link->dstpad = in;
- filt->inputs[in] = link;
+ link->dstpad = &filt->input_pads[filt_srcpad_idx];
+ filt->inputs[filt_srcpad_idx] = link;
- /* if any information on supported colorspaces already exists on the
+ /* if any information on supported media formats already exists on the
* link, we need to preserve that */
- if(link->out_formats)
+ if (link->out_formats)
avfilter_formats_changeref(&link->out_formats,
- &filt->outputs[out]->out_formats);
+ &filt->outputs[filt_dstpad_idx]->out_formats);
return 0;
}
{
int (*config_link)(AVFilterLink *);
unsigned i;
+ int ret;
- for(i = 0; i < filter->input_count; i ++) {
+ for (i = 0; i < filter->input_count; i ++) {
AVFilterLink *link = filter->inputs[i];
- if(!link) continue;
+ if (!link) continue;
- switch(link->init_state) {
+ switch (link->init_state) {
case AVLINK_INIT:
continue;
case AVLINK_STARTINIT:
case AVLINK_UNINIT:
link->init_state = AVLINK_STARTINIT;
- if(avfilter_config_links(link->src))
- return -1;
+ if ((ret = avfilter_config_links(link->src)) < 0)
+ return ret;
- if(!(config_link = link_spad(link).config_props))
+ if (!(config_link = link->srcpad->config_props))
config_link = avfilter_default_config_output_link;
- if(config_link(link))
- return -1;
+ if ((ret = config_link(link)) < 0)
+ return ret;
+
+ if (link->time_base.num == 0 && link->time_base.den == 0)
+ link->time_base = link->src && link->src->input_count ?
+ 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((config_link = link_dpad(link).config_props))
- if(config_link(link))
- return -1;
+ if (link->sample_rate == 0 && link->src && link->src->input_count)
+ link->sample_rate = link->src->inputs[0]->sample_rate;
+
+ if (link->channel_layout == 0 && link->src && link->src->input_count)
+ link->channel_layout = link->src->inputs[0]->channel_layout;
+
+ if ((config_link = link->dstpad->config_props))
+ if ((ret = config_link(link)) < 0)
+ return ret;
link->init_state = AVLINK_INIT;
}
return 0;
}
-static void dprintf_picref(void *ctx, AVFilterPicRef *picref, int end)
+#ifdef DEBUG
+static char *ff_get_ref_perms_string(char *buf, size_t buf_size, int perms)
{
- dprintf(ctx,
- "picref[%p data[%p, %p, %p, %p] linesize[%d, %d, %d, %d] pts:%"PRId64" s:%dx%d]%s",
- picref,
- picref->data [0], picref->data [1], picref->data [2], picref->data [3],
- picref->linesize[0], picref->linesize[1], picref->linesize[2], picref->linesize[3],
- picref->pts, picref->w, picref->h,
- end ? "\n" : "");
+ 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;
}
+#endif
-static void dprintf_link(void *ctx, AVFilterLink *link, int end)
+static void ff_dlog_ref(void *ctx, AVFilterBufferRef *ref, int end)
{
- dprintf(ctx,
- "link[%p s:%dx%d fmt:%-16s %-16s->%-16s]%s",
- link, link->w, link->h,
- avcodec_get_pix_fmt_name(link->format),
- link->src ? link->src->filter->name : "",
- link->dst ? link->dst->filter->name : "",
- end ? "\n" : "");
-}
+ 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 iskey:%d type:%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 */
+ ref->video->key_frame,
+ av_get_picture_type_char(ref->video->pict_type));
+ }
+ 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);
+ }
-#define DPRINTF_START(ctx, func) dprintf(NULL, "%-16s: ", #func)
+ av_dlog(ctx, "]%s", end ? "\n" : "");
+}
-AVFilterPicRef *avfilter_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
+static void ff_dlog_link(void *ctx, AVFilterLink *link, int end)
{
- AVFilterPicRef *ret = NULL;
+ if (link->type == AVMEDIA_TYPE_VIDEO) {
+ 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,
+ link->src ? link->src->filter->name : "",
+ link->dst ? link->dst->filter->name : "",
+ end ? "\n" : "");
+ } else {
+ 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",
+ link, link->sample_rate, buf,
+ av_get_sample_fmt_name(link->format),
+ link->src ? link->src->filter->name : "",
+ link->dst ? link->dst->filter->name : "",
+ end ? "\n" : "");
+ }
+}
- DPRINTF_START(NULL, get_video_buffer); dprintf_link(NULL, link, 0); dprintf(NULL, " perms:%d w:%d h:%d\n", perms, w, h);
+#define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func)
- if(link_dpad(link).get_video_buffer)
- ret = link_dpad(link).get_video_buffer(link, perms, w, h);
+AVFilterBufferRef *avfilter_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
+{
+ AVFilterBufferRef *ret = NULL;
- if(!ret && link->dst->output_count)
- ret = avfilter_get_video_buffer(link->dst->outputs[0], perms, w, h);
+ 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(!ret)
+ 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);
- DPRINTF_START(NULL, get_video_buffer); dprintf_link(NULL, link, 0); dprintf(NULL, " returning "); dprintf_picref(NULL, ret, 1);
+ 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);
+
+ return ret;
+}
+
+AVFilterBufferRef *
+avfilter_get_video_buffer_ref_from_arrays(uint8_t *data[4], int linesize[4], int perms,
+ int w, int h, enum PixelFormat format)
+{
+ AVFilterBuffer *pic = av_mallocz(sizeof(AVFilterBuffer));
+ AVFilterBufferRef *picref = av_mallocz(sizeof(AVFilterBufferRef));
+
+ if (!pic || !picref)
+ goto fail;
+
+ picref->buf = pic;
+ picref->buf->free = ff_avfilter_default_free_buffer;
+ if (!(picref->video = av_mallocz(sizeof(AVFilterBufferRefVideoProps))))
+ goto fail;
+
+ pic->w = picref->video->w = w;
+ pic->h = picref->video->h = h;
+
+ /* make sure the buffer gets read permission or it's useless for output */
+ picref->perms = perms | AV_PERM_READ;
+
+ pic->refcount = 1;
+ picref->type = AVMEDIA_TYPE_VIDEO;
+ pic->format = picref->format = format;
+
+ 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));
+
+ return picref;
+
+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)
+{
+ 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;
}
int avfilter_request_frame(AVFilterLink *link)
{
- DPRINTF_START(NULL, request_frame); dprintf_link(NULL, link, 1);
+ FF_DPRINTF_START(NULL, request_frame); ff_dlog_link(NULL, link, 1);
- if(link_spad(link).request_frame)
- return link_spad(link).request_frame(link);
- else if(link->src->inputs[0])
+ 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;
}
int avfilter_poll_frame(AVFilterLink *link)
{
- int i, min=INT_MAX;
+ int i, min = INT_MAX;
- if(link_spad(link).poll_frame)
- return link_spad(link).poll_frame(link);
+ if (link->srcpad->poll_frame)
+ return link->srcpad->poll_frame(link);
- for (i=0; i<link->src->input_count; i++) {
+ for (i = 0; i < link->src->input_count; i++) {
int val;
- if(!link->src->inputs[i])
+ if (!link->src->inputs[i])
return -1;
val = avfilter_poll_frame(link->src->inputs[i]);
min = FFMIN(min, val);
/* 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, AVFilterPicRef *picref)
+void avfilter_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
{
- void (*start_frame)(AVFilterLink *, AVFilterPicRef *);
- AVFilterPad *dst = &link_dpad(link);
+ void (*start_frame)(AVFilterLink *, AVFilterBufferRef *);
+ AVFilterPad *dst = link->dstpad;
+ int perms = picref->perms;
- DPRINTF_START(NULL, start_frame); dprintf_link(NULL, link, 0); dprintf(NULL, " "); dprintf_picref(NULL, picref, 1);
+ FF_DPRINTF_START(NULL, start_frame); ff_dlog_link(NULL, link, 0); av_dlog(NULL, " "); ff_dlog_ref(NULL, picref, 1);
- if(!(start_frame = dst->start_frame))
+ if (!(start_frame = dst->start_frame))
start_frame = avfilter_default_start_frame;
+ if (picref->linesize[0] < 0)
+ perms |= AV_PERM_NEG_LINESIZES;
/* prepare to copy the picture if it has insufficient permissions */
- if((dst->min_perms & picref->perms) != dst->min_perms ||
- dst->rej_perms & picref->perms) {
- /*
- av_log(link->dst, AV_LOG_INFO,
+ 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_dpad(link).min_perms, link_dpad(link).rej_perms);
- */
+ link->dstpad->min_perms, link->dstpad->rej_perms);
- link->cur_pic = avfilter_default_get_video_buffer(link, dst->min_perms, link->w, link->h);
- link->srcpic = picref;
- link->cur_pic->pts = link->srcpic->pts;
- link->cur_pic->pixel_aspect = link->srcpic->pixel_aspect;
+ 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_pic = picref;
+ link->cur_buf = picref;
- start_frame(link, link->cur_pic);
+ start_frame(link, link->cur_buf);
}
void avfilter_end_frame(AVFilterLink *link)
{
void (*end_frame)(AVFilterLink *);
- if(!(end_frame = link_dpad(link).end_frame))
+ if (!(end_frame = link->dstpad->end_frame))
end_frame = avfilter_default_end_frame;
end_frame(link);
/* unreference the source picture if we're feeding the destination filter
* a copied version dues to permission issues */
- if(link->srcpic) {
- avfilter_unref_pic(link->srcpic);
- link->srcpic = NULL;
+ if (link->src_buf) {
+ avfilter_unref_buffer(link->src_buf);
+ link->src_buf = NULL;
}
-
}
-void avfilter_draw_slice(AVFilterLink *link, int y, int h)
+void avfilter_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
{
uint8_t *src[4], *dst[4];
- int i, j, hsub, vsub;
- void (*draw_slice)(AVFilterLink *, int, int);
+ int i, j, vsub;
+ void (*draw_slice)(AVFilterLink *, int, int, int);
- DPRINTF_START(NULL, draw_slice); dprintf_link(NULL, link, 0); dprintf(NULL, " y:%d h:%d\n", y, h);
+ 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);
/* copy the slice if needed for permission reasons */
- if(link->srcpic) {
- avcodec_get_chroma_sub_sample(link->format, &hsub, &vsub);
-
- for(i = 0; i < 4; i ++) {
- if(link->srcpic->data[i]) {
- src[i] = link->srcpic-> data[i] +
- (y >> (i==0 ? 0 : vsub)) * link->srcpic-> linesize[i];
- dst[i] = link->cur_pic->data[i] +
- (y >> (i==0 ? 0 : vsub)) * link->cur_pic->linesize[i];
+ if (link->src_buf) {
+ vsub = av_pix_fmt_descriptors[link->format].log2_chroma_h;
+
+ 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;
}
- for(i = 0; i < 4; i ++) {
+ for (i = 0; i < 4; i++) {
int planew =
- ff_get_plane_bytewidth(link->format, link->cur_pic->w, i);
+ av_image_get_linesize(link->format, link->cur_buf->video->w, i);
- if(!src[i]) continue;
+ if (!src[i]) continue;
- for(j = 0; j < h >> (i==0 ? 0 : vsub); j ++) {
+ for (j = 0; j < h >> (i==1 || i==2 ? vsub : 0); j++) {
memcpy(dst[i], src[i], planew);
- src[i] += link->srcpic ->linesize[i];
- dst[i] += link->cur_pic->linesize[i];
+ src[i] += link->src_buf->linesize[i];
+ dst[i] += link->cur_buf->linesize[i];
}
}
}
- if(!(draw_slice = link_dpad(link).draw_slice))
+ if (!(draw_slice = link->dstpad->draw_slice))
draw_slice = avfilter_default_draw_slice;
- draw_slice(link, y, h);
+ draw_slice(link, y, h, slice_dir);
+}
+
+void avfilter_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
+{
+ void (*filter_samples)(AVFilterLink *, AVFilterBufferRef *);
+ AVFilterPad *dst = link->dstpad;
+
+ FF_DPRINTF_START(NULL, filter_samples); ff_dlog_link(NULL, link, 1);
+
+ if (!(filter_samples = dst->filter_samples))
+ filter_samples = avfilter_default_filter_samples;
+
+ /* 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_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);
+
+ 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;
+
+ /* Copy actual data into new samples buffer */
+ memcpy(link->cur_buf->data[0], samplesref->data[0], samplesref->audio->size);
+
+ avfilter_unref_buffer(samplesref);
+ } else
+ link->cur_buf = samplesref;
+
+ filter_samples(link, link->cur_buf);
}
-AVFilter *first_avfilter = NULL;
+#define MAX_REGISTERED_AVFILTERS_NB 64
+
+static AVFilter *registered_avfilters[MAX_REGISTERED_AVFILTERS_NB + 1];
+
+static int next_registered_avfilter_idx = 0;
AVFilter *avfilter_get_by_name(const char *name)
{
- AVFilter *filter;
+ int i;
- for (filter = first_avfilter; filter; filter = filter->next)
- if (!strcmp(filter->name, name))
- return filter;
+ for (i = 0; registered_avfilters[i]; i++)
+ if (!strcmp(registered_avfilters[i]->name, name))
+ return registered_avfilters[i];
return NULL;
}
-void avfilter_register(AVFilter *filter)
+int avfilter_register(AVFilter *filter)
{
- AVFilter **p;
- p = &first_avfilter;
- while (*p)
- p = &(*p)->next;
+ if (next_registered_avfilter_idx == MAX_REGISTERED_AVFILTERS_NB)
+ return -1;
+
+ registered_avfilters[next_registered_avfilter_idx++] = filter;
+ return 0;
+}
- *p = filter;
- filter->next = NULL;
+AVFilter **av_filter_next(AVFilter **filter)
+{
+ return filter ? ++filter : ®istered_avfilters[0];
}
void avfilter_uninit(void)
{
- first_avfilter = NULL;
+ memset(registered_avfilters, 0, sizeof(registered_avfilters));
+ next_registered_avfilter_idx = 0;
}
static int pad_count(const AVFilterPad *pads)
static const AVClass avfilter_class = {
"AVFilter",
- filter_name
+ filter_name,
+ NULL,
+ LIBAVUTIL_VERSION_INT,
};
-AVFilterContext *avfilter_open(AVFilter *filter, const char *inst_name)
+int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name)
{
AVFilterContext *ret;
+ *filter_ctx = NULL;
if (!filter)
- return 0;
+ return AVERROR(EINVAL);
ret = av_mallocz(sizeof(AVFilterContext));
+ if (!ret)
+ return AVERROR(ENOMEM);
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 (filter->priv_size) {
+ ret->priv = av_mallocz(filter->priv_size);
+ if (!ret->priv)
+ goto err;
+ }
ret->input_count = pad_count(filter->inputs);
if (ret->input_count) {
ret->input_pads = av_malloc(sizeof(AVFilterPad) * ret->input_count);
+ if (!ret->input_pads)
+ goto err;
memcpy(ret->input_pads, filter->inputs, sizeof(AVFilterPad) * ret->input_count);
ret->inputs = av_mallocz(sizeof(AVFilterLink*) * ret->input_count);
+ if (!ret->inputs)
+ goto err;
}
ret->output_count = pad_count(filter->outputs);
if (ret->output_count) {
ret->output_pads = av_malloc(sizeof(AVFilterPad) * ret->output_count);
+ if (!ret->output_pads)
+ goto err;
memcpy(ret->output_pads, filter->outputs, sizeof(AVFilterPad) * ret->output_count);
ret->outputs = av_mallocz(sizeof(AVFilterLink*) * ret->output_count);
+ if (!ret->outputs)
+ goto err;
}
- return ret;
+ *filter_ctx = ret;
+ return 0;
+
+err:
+ av_freep(&ret->inputs);
+ av_freep(&ret->input_pads);
+ ret->input_count = 0;
+ av_freep(&ret->outputs);
+ av_freep(&ret->output_pads);
+ ret->output_count = 0;
+ av_freep(&ret->priv);
+ av_free(ret);
+ return AVERROR(ENOMEM);
}
-void avfilter_destroy(AVFilterContext *filter)
+void avfilter_free(AVFilterContext *filter)
{
int i;
+ AVFilterLink *link;
- if(filter->filter->uninit)
+ if (filter->filter->uninit)
filter->filter->uninit(filter);
- for(i = 0; i < filter->input_count; i ++) {
- if(filter->inputs[i])
- filter->inputs[i]->src->outputs[filter->inputs[i]->srcpad] = NULL;
- av_freep(&filter->inputs[i]);
+ 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);
+ }
+ av_freep(&link);
}
- for(i = 0; i < filter->output_count; i ++) {
- if(filter->outputs[i])
- filter->outputs[i]->dst->inputs[filter->outputs[i]->dstpad] = NULL;
- av_freep(&filter->outputs[i]);
+ 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);
+ }
+ av_freep(&link);
}
av_freep(&filter->name);
{
int ret=0;
- if(filter->filter->init)
+ if (filter->filter->init)
ret = filter->filter->init(filter, args, opaque);
return ret;
}
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