ffmpeg source update for sep 09

source/patched-ffmpeg-mt/libavfilter/avfilter.c

 /*
  * filter layer
  * copyright (c) 2007 Bobby Bingham
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg 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,
  * 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
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /* #define DEBUG */
 
-#include "libavcodec/imgconvert.h"
+#include "libavcodec/audioconvert.c"
 #include "libavutil/pixdesc.h"
+#include "libavcore/imgutils.h"
 #include "avfilter.h"
 #include "internal.h"
 
 unsigned avfilter_version(void) {
     return LIBAVFILTER_VERSION_INT;
 }
 
 const char *avfilter_configuration(void)
 {
     return FFMPEG_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));
+    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->buf->refcount))
+    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)
 {
     unsigned i;
 
     idx = FFMIN(idx, *count);
 
     *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));
     (*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,
                   AVFilterContext *dst, unsigned dstpad)
 {
     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;
 
     src->outputs[srcpad] =
     dst-> inputs[dstpad] = link = av_mallocz(sizeof(AVFilterLink));
 
     link->src     = src;
     link->dst     = dst;
     link->srcpad  = srcpad;
     link->dstpad  = dstpad;
     link->type    = src->output_pads[srcpad].type;
     assert(PIX_FMT_NONE == -1 && SAMPLE_FMT_NONE == -1);
     link->format  = -1;
 
     return 0;
 }
 
 int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt,
                            unsigned in, unsigned out)
 {
     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)) {
+    if (avfilter_link(filt, out, link->dst, link->dstpad)) {
         /* failed to link output filter to new filter */
         link->dst->inputs[link->dstpad] = link;
         return -1;
     }
 
     /* re-hookup the link to the new destination filter we inserted */
     link->dst = filt;
     link->dstpad = in;
     filt->inputs[in] = link;
 
     /* 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);
 
     return 0;
 }
 
 int avfilter_config_links(AVFilterContext *filter)
 {
     int (*config_link)(AVFilterLink *);
     unsigned i;
 
-    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:
             av_log(filter, AV_LOG_INFO, "circular filter chain detected\n");
             return 0;
         case AVLINK_UNINIT:
             link->init_state = AVLINK_STARTINIT;
 
-            if(avfilter_config_links(link->src))
+            if (avfilter_config_links(link->src))
                 return -1;
 
-            if(!(config_link = link_spad(link).config_props))
+            if (!(config_link = link_spad(link).config_props))
                 config_link  = avfilter_default_config_output_link;
-            if(config_link(link))
+            if (config_link(link))
                 return -1;
 
-            if((config_link = link_dpad(link).config_props))
-                if(config_link(link))
+            if ((config_link = link_dpad(link).config_props))
+                if (config_link(link))
                     return -1;
 
             link->init_state = AVLINK_INIT;
         }
     }
 
     return 0;
 }
 
-void ff_dprintf_picref(void *ctx, AVFilterBufferRef *picref, int end)
+char *ff_get_ref_perms_string(char *buf, size_t buf_size, int perms)
 {
+    snprintf(buf, buf_size, "%s%s%s%s%s",
+             perms & AV_PERM_READ      ? "r" : "",
+             perms & AV_PERM_WRITE     ? "w" : "",
+             perms & AV_PERM_PRESERVE  ? "p" : "",
+             perms & AV_PERM_REUSE     ? "r" : "",
+             perms & AV_PERM_REUSE2    ? "R" : "");
+    return buf;
+}
+
+void ff_dprintf_ref(void *ctx, AVFilterBufferRef *ref, int end)
+{
+    av_unused char buf[16];
     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->pixel_aspect.num, picref->pixel_aspect.den, picref->w, picref->h,
-            end ? "\n" : "");
+            "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) {
+        dprintf(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) {
+        dprintf(ctx, " cl:%"PRId64"d sn:%d s:%d sr:%d p:%d",
+                ref->audio->channel_layout,
+                ref->audio->samples_nb,
+                ref->audio->size,
+                ref->audio->sample_rate,
+                ref->audio->planar);
+    }
+
+    dprintf(ctx, "]%s", 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)
 {
     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);
+    av_unused char buf[16];
+    FF_DPRINTF_START(NULL, get_video_buffer); ff_dprintf_link(NULL, link, 0);
+    dprintf(NULL, " perms:%s w:%d h:%d\n", ff_get_ref_perms_string(buf, sizeof(buf), perms), w, h);
 
-    if(link_dpad(link).get_video_buffer)
+    if (link_dpad(link).get_video_buffer)
         ret = link_dpad(link).get_video_buffer(link, perms, w, h);
 
-    if(!ret)
+    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);
+    if (ret)
+        ret->type = AVMEDIA_TYPE_VIDEO;
+
+    FF_DPRINTF_START(NULL, get_video_buffer); ff_dprintf_link(NULL, link, 0); dprintf(NULL, " returning "); ff_dprintf_ref(NULL, ret, 1);
+
+    return ret;
+}
+
+AVFilterBufferRef *avfilter_get_audio_buffer(AVFilterLink *link, int perms,
+                                             enum SampleFormat sample_fmt, int size,
+                                             int64_t channel_layout, int planar)
+{
+    AVFilterBufferRef *ret = NULL;
+
+    if (link_dpad(link).get_audio_buffer)
+        ret = link_dpad(link).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)
 {
     FF_DPRINTF_START(NULL, request_frame); ff_dprintf_link(NULL, link, 1);
 
-    if(link_spad(link).request_frame)
+    if (link_spad(link).request_frame)
         return link_spad(link).request_frame(link);
-    else if(link->src->inputs[0])
+    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)
+    if (link_spad(link).poll_frame)
         return link_spad(link).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);
+    FF_DPRINTF_START(NULL, start_frame); ff_dprintf_link(NULL, link, 0); dprintf(NULL, " "); ff_dprintf_ref(NULL, picref, 1);
 
-    if(!(start_frame = dst->start_frame))
+    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,
+    if ((dst->min_perms & picref->perms) != dst->min_perms ||
+         dst->rej_perms & picref->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->cur_buf = avfilter_default_get_video_buffer(link, dst->min_perms, link->w, link->h);
+        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;
 
     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_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) {
+    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) {
+    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]) {
+        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 ++) {
+        for (i = 0; i < 4; i++) {
             int planew =
-                ff_get_plane_bytewidth(link->format, link->cur_buf->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==0 ? 0 : vsub); j++) {
                 memcpy(dst[i], src[i], planew);
-                src[i] += link->src_buf ->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_dpad(link).draw_slice))
         draw_slice = avfilter_default_draw_slice;
     draw_slice(link, y, h, slice_dir);
 }
 
+void avfilter_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
+{
+    void (*filter_samples)(AVFilterLink *, AVFilterBufferRef *);
+    AVFilterPad *dst = &link_dpad(link);
+
+    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_dpad(link).min_perms, link_dpad(link).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);
+}
+
 #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)
 {
     int i;
 
@@ skipping 38 matching lines @@
     return filter->filter->name;
 }
 
 static const AVClass avfilter_class = {
     "AVFilter",
     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));
 
     ret->av_class = &avfilter_class;
     ret->filter   = filter;
     ret->name     = inst_name ? av_strdup(inst_name) : NULL;
     ret->priv     = av_mallocz(filter->priv_size);
 
     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);
     }
 
     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);
     }
 
-    return ret;
+    *filter_ctx = ret;
+    return 0;
 }
 
 void avfilter_destroy(AVFilterContext *filter)
 {
     int i;
 
-    if(filter->filter->uninit)
+    if (filter->filter->uninit)
         filter->filter->uninit(filter);
 
-    for(i = 0; i < filter->input_count; i ++) {
-        if(filter->inputs[i]) {
+    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);
         }
         av_freep(&filter->inputs[i]);
     }
-    for(i = 0; i < filter->output_count; i ++) {
-        if(filter->outputs[i]) {
+    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);
         }
         av_freep(&filter->outputs[i]);
     }
 
     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);
 }
 
 int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque)
 {
     int ret=0;
 
-    if(filter->filter->init)
+    if (filter->filter->init)
         ret = filter->filter->init(filter, args, opaque);
     return ret;
 }