* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <string.h>
+#include <stdio.h>
+
+#include "libavutil/buffer.h"
#include "libavutil/imgutils.h"
+#include "libavutil/mem.h"
#include "avfilter.h"
#include "internal.h"
#include "video.h"
-#ifdef DEBUG
-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;
-}
-#endif
-
-static void ff_dlog_ref(void *ctx, AVFilterBufferRef *ref, int end)
+AVFrame *ff_null_get_video_buffer(AVFilterLink *link, int w, int h)
{
- 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 n:%d r:%d p:%d",
- ref->audio->channel_layout,
- ref->audio->nb_samples,
- ref->audio->sample_rate,
- ref->audio->planar);
- }
-
- av_dlog(ctx, "]%s", end ? "\n" : "");
-}
-
-AVFilterBufferRef *ff_null_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
-{
- return ff_get_video_buffer(link->dst->outputs[0], perms, w, h);
+ return ff_get_video_buffer(link->dst->outputs[0], w, h);
}
/* TODO: set the buffer's priv member to a context structure for the whole
* filter chain. This will allow for a buffer pool instead of the constant
* alloc & free cycle currently implemented. */
-AVFilterBufferRef *ff_default_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
+AVFrame *ff_default_get_video_buffer(AVFilterLink *link, int w, int h)
{
- 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;
+ AVFrame *frame = av_frame_alloc();
+ int ret;
- picref = avfilter_get_video_buffer_ref_from_arrays(data, linesize,
- perms, w, h, link->format);
- if (!picref) {
- av_free(data[0]);
+ if (!frame)
return NULL;
- }
-
- return picref;
-}
-
-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, 4*sizeof(data[0]));
- memcpy(pic->linesize, linesize, 4*sizeof(linesize[0]));
- memcpy(picref->data, pic->data, sizeof(picref->data));
- memcpy(picref->linesize, pic->linesize, sizeof(picref->linesize));
- pic-> extended_data = pic->data;
- picref->extended_data = picref->data;
+ frame->width = w;
+ frame->height = h;
+ frame->format = link->format;
- picref->pts = AV_NOPTS_VALUE;
-
- return picref;
+ ret = av_frame_get_buffer(frame, 32);
+ if (ret < 0)
+ av_frame_free(&frame);
-fail:
- if (picref && picref->video)
- av_free(picref->video);
- av_free(picref);
- av_free(pic);
- return NULL;
+ return frame;
}
-AVFilterBufferRef *ff_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
+AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h)
{
- AVFilterBufferRef *ret = NULL;
+ AVFrame *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);
+ ret = link->dstpad->get_video_buffer(link, w, h);
if (!ret)
- ret = ff_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);
-
- return ret;
-}
-
-int ff_null_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
-{
- AVFilterBufferRef *buf_out = avfilter_ref_buffer(picref, ~0);
- if (!buf_out)
- return AVERROR(ENOMEM);
- return ff_start_frame(link->dst->outputs[0], buf_out);
-}
-
-static int default_start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
-{
- AVFilterLink *outlink = NULL;
-
- if (inlink->dst->nb_outputs)
- outlink = inlink->dst->outputs[0];
-
- if (outlink) {
- outlink->out_buf = ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
- if (!outlink->out_buf)
- return AVERROR(ENOMEM);
-
- avfilter_copy_buffer_ref_props(outlink->out_buf, picref);
- return ff_start_frame(outlink, avfilter_ref_buffer(outlink->out_buf, ~0));
- }
- return 0;
-}
-
-static void clear_link(AVFilterLink *link)
-{
- avfilter_unref_bufferp(&link->cur_buf);
- avfilter_unref_bufferp(&link->src_buf);
- avfilter_unref_bufferp(&link->out_buf);
-}
-
-/* XXX: should we do the duplicating of the picture ref here, instead of
- * forcing the source filter to do it? */
-int ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
-{
- int (*start_frame)(AVFilterLink *, AVFilterBufferRef *);
- AVFilterPad *dst = link->dstpad;
- int ret, perms = picref->perms;
+ ret = ff_default_get_video_buffer(link, w, h);
- 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))
- start_frame = 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 & 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);
-
- link->cur_buf = ff_get_video_buffer(link, dst->min_perms, link->w, link->h);
- if (!link->cur_buf) {
- avfilter_unref_bufferp(&picref);
- return AVERROR(ENOMEM);
- }
-
- link->src_buf = picref;
- avfilter_copy_buffer_ref_props(link->cur_buf, link->src_buf);
- }
- else
- link->cur_buf = picref;
-
- ret = start_frame(link, link->cur_buf);
- if (ret < 0)
- clear_link(link);
-
- return ret;
-}
-
-void ff_null_end_frame(AVFilterLink *link)
-{
- ff_end_frame(link->dst->outputs[0]);
-}
-
-static void default_end_frame(AVFilterLink *inlink)
-{
- AVFilterLink *outlink = NULL;
-
- if (inlink->dst->nb_outputs)
- outlink = inlink->dst->outputs[0];
-
- if (outlink) {
- ff_end_frame(outlink);
- }
-}
-
-void ff_end_frame(AVFilterLink *link)
-{
- void (*end_frame)(AVFilterLink *);
-
- if (!(end_frame = link->dstpad->end_frame))
- end_frame = default_end_frame;
-
- end_frame(link);
-
- clear_link(link);
-}
-
-int ff_null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
-{
- return ff_draw_slice(link->dst->outputs[0], y, h, slice_dir);
-}
-
-static int default_draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
-{
- AVFilterLink *outlink = NULL;
-
- if (inlink->dst->nb_outputs)
- outlink = inlink->dst->outputs[0];
-
- if (outlink)
- return ff_draw_slice(outlink, y, h, slice_dir);
- return 0;
-}
-
-int ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir)
-{
- uint8_t *src[4], *dst[4];
- int i, j, vsub, ret;
- int (*draw_slice)(AVFilterLink *, int, int, int);
-
- 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->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++) {
- int planew =
- av_image_get_linesize(link->format, link->cur_buf->video->w, i);
-
- if (!src[i]) continue;
-
- 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];
- }
- }
- }
-
- if (!(draw_slice = link->dstpad->draw_slice))
- draw_slice = default_draw_slice;
- ret = draw_slice(link, y, h, slice_dir);
- if (ret < 0)
- clear_link(link);
return ret;
}
projects / ffmpeg / blobdiff