/*
* 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 "avfilter.h"
+#include "formats.h"
#include "internal.h"
unsigned avfilter_version(void) {
const char *avfilter_configuration(void)
{
- return FFMPEG_CONFIGURATION;
+ return LIBAV_CONFIGURATION;
}
const char *avfilter_license(void)
{
#define LICENSE_PREFIX "libavfilter license: "
- return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
-}
-
-/** 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]
-
-AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
-{
- AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef));
- *ret = *ref;
- if (ref->type == AVMEDIA_TYPE_VIDEO) {
- ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps));
- *ret->video = *ref->video;
- }
- ret->perms &= pmask;
- ret->buf->refcount ++;
- return ret;
-}
-
-void avfilter_unref_buffer(AVFilterBufferRef *ref)
-{
- if(!(--ref->buf->refcount))
- ref->buf->free(ref->buf);
- av_free(ref->video);
- av_free(ref);
+ return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
}
void avfilter_insert_pad(unsigned idx, unsigned *count, size_t padidx_off,
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->srcpad = &src->output_pads[srcpad];
+ link->dstpad = &dst->input_pads[dstpad];
link->type = src->output_pads[srcpad].type;
- assert(PIX_FMT_NONE == -1 && SAMPLE_FMT_NONE == -1);
+ 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)
{
+ 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 media formats already exists on the
* link, we need to preserve that */
- if(link->out_formats)
- avfilter_formats_changeref(&link->out_formats,
- &filt->outputs[out]->out_formats);
+ if (link->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;
}
{
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(!(config_link = link_spad(link).config_props))
- config_link = avfilter_default_config_output_link;
- if(config_link(link))
- return -1;
+ if ((ret = avfilter_config_links(link->src)) < 0)
+ return ret;
+
+ if (!(config_link = link->srcpad->config_props)) {
+ if (link->src->input_count != 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)
+ 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->type == AVMEDIA_TYPE_VIDEO) {
+ if (!link->sample_aspect_ratio.num && !link->sample_aspect_ratio.den)
+ link->sample_aspect_ratio = link->src->input_count ?
+ link->src->inputs[0]->sample_aspect_ratio : (AVRational){1,1};
+
+ if (link->src->input_count) {
+ 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((config_link = link_dpad(link).config_props))
- if(config_link(link))
- return -1;
+ if ((config_link = link->dstpad->config_props))
+ if ((ret = config_link(link)) < 0)
+ return ret;
link->init_state = AVLINK_INIT;
}
return 0;
}
-void ff_dprintf_picref(void *ctx, AVFilterBufferRef *picref, int end)
-{
- dprintf(ctx,
- "picref[%p data[%p, %p, %p, %p] linesize[%d, %d, %d, %d] pts:%"PRId64" pos:%"PRId64" a:%d/%d 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->pos,
- picref->video->pixel_aspect.num, picref->video->pixel_aspect.den, picref->video->w, picref->video->h,
- end ? "\n" : "");
-}
-
-void ff_dprintf_link(void *ctx, AVFilterLink *link, int end)
-{
- dprintf(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" : "");
-}
-
-AVFilterBufferRef *avfilter_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
+void ff_dlog_link(void *ctx, AVFilterLink *link, int end)
{
- AVFilterBufferRef *ret = NULL;
-
- FF_DPRINTF_START(NULL, get_video_buffer); ff_dprintf_link(NULL, link, 0); dprintf(NULL, " perms:%d w:%d h:%d\n", perms, w, h);
-
- if(link_dpad(link).get_video_buffer)
- ret = link_dpad(link).get_video_buffer(link, perms, w, h);
-
- if(!ret)
- ret = avfilter_default_get_video_buffer(link, perms, w, h);
-
- FF_DPRINTF_START(NULL, get_video_buffer); ff_dprintf_link(NULL, link, 0); dprintf(NULL, " returning "); ff_dprintf_picref(NULL, ret, 1);
-
- return ret;
+ 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" : "");
+ }
}
int avfilter_request_frame(AVFilterLink *link)
{
- FF_DPRINTF_START(NULL, request_frame); ff_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);
return min;
}
-/* 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)
-{
- void (*start_frame)(AVFilterLink *, AVFilterBufferRef *);
- AVFilterPad *dst = &link_dpad(link);
-
- FF_DPRINTF_START(NULL, start_frame); ff_dprintf_link(NULL, link, 0); dprintf(NULL, " "); ff_dprintf_picref(NULL, picref, 1);
-
- if(!(start_frame = dst->start_frame))
- start_frame = avfilter_default_start_frame;
-
- /* 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,
- "frame copy needed (have perms %x, need %x, reject %x)\n",
- picref->perms,
- link_dpad(link).min_perms, link_dpad(link).rej_perms);
- */
-
- link->cur_buf = avfilter_default_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;
-
- start_frame(link, link->cur_buf);
-}
-
-void avfilter_end_frame(AVFilterLink *link)
-{
- void (*end_frame)(AVFilterLink *);
-
- if(!(end_frame = link_dpad(link).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->src_buf) {
- avfilter_unref_buffer(link->src_buf);
- link->src_buf = NULL;
- }
-
-}
-
-void avfilter_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
-{
- uint8_t *src[4], *dst[4];
- int i, j, vsub;
- void (*draw_slice)(AVFilterLink *, int, int, int);
-
- FF_DPRINTF_START(NULL, draw_slice); ff_dprintf_link(NULL, link, 0); dprintf(NULL, " y:%d h:%d dir:%d\n", y, h, slice_dir);
-
- /* copy the slice if needed for permission reasons */
- 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==0 ? 0 : vsub)) * link->src_buf-> linesize[i];
- dst[i] = link->cur_buf->data[i] +
- (y >> (i==0 ? 0 : vsub)) * link->cur_buf->linesize[i];
- } else
- src[i] = dst[i] = NULL;
- }
-
- for(i = 0; i < 4; i ++) {
- int planew =
- ff_get_plane_bytewidth(link->format, link->cur_buf->video->w, i);
-
- if(!src[i]) continue;
-
- for(j = 0; j < h >> (i==0 ? 0 : vsub); j ++) {
- memcpy(dst[i], src[i], planew);
- src[i] += link->src_buf ->linesize[i];
- dst[i] += link->cur_buf->linesize[i];
- }
- }
- }
-
- if(!(draw_slice = link_dpad(link).draw_slice))
- draw_slice = avfilter_default_draw_slice;
- draw_slice(link, y, h, slice_dir);
-}
-
#define MAX_REGISTERED_AVFILTERS_NB 64
static AVFilter *registered_avfilters[MAX_REGISTERED_AVFILTERS_NB + 1];
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;
}
*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]) {
- if (filter->inputs[i]->src)
- filter->inputs[i]->src->outputs[filter->inputs[i]->srcpad] = NULL;
- avfilter_formats_unref(&filter->inputs[i]->in_formats);
- avfilter_formats_unref(&filter->inputs[i]->out_formats);
+ 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;
+ 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(&filter->inputs[i]);
+ av_freep(&link);
}
- for(i = 0; i < filter->output_count; i ++) {
- if(filter->outputs[i]) {
- if (filter->outputs[i]->dst)
- filter->outputs[i]->dst->inputs[filter->outputs[i]->dstpad] = NULL;
- avfilter_formats_unref(&filter->outputs[i]->in_formats);
- avfilter_formats_unref(&filter->outputs[i]->out_formats);
+ 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;
+ 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(&filter->outputs[i]);
+ 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;
}
+#if FF_API_DEFAULT_CONFIG_OUTPUT_LINK
+int avfilter_default_config_output_link(AVFilterLink *link)
+{
+ return 0;
+}
+#endif