/* * 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 "libavutil/pixdesc.h"#include "libavutil/rational.h"#include "libavutil/audioconvert.h"#include "libavutil/imgutils.h"#include "libavutil/avassert.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;} 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;} static void store_in_pool(AVFilterBufferRef *ref){ int i; AVFilterPool *pool= ref->buf->priv; av_assert0(ref->buf->data[0]); if (pool->count == POOL_SIZE) { AVFilterBufferRef *ref1 = pool->pic[0]; av_freep(&ref1->video); av_freep(&ref1->audio); av_freep(&ref1->buf->data[0]); av_freep(&ref1->buf); av_free(ref1); memmove(&pool->pic[0], &pool->pic[1], sizeof(void*)*(POOL_SIZE-1)); pool->count--; pool->pic[POOL_SIZE-1] = NULL; } for (i = 0; i < POOL_SIZE; i++) { if (!pool->pic[i]) { pool->pic[i] = ref; pool->count++; break; } }} void avfilter_unref_buffer(AVFilterBufferRef *ref){ if (!ref) return; if (!(--ref->buf->refcount)) { if (!ref->buf->free) { store_in_pool(ref); return; } ref->buf->free(ref->buf); } av_freep(&ref->video); av_freep(&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))++;} 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]) 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 = &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;} void avfilter_link_free(AVFilterLink **link){ if (!*link) return; if ((*link)->pool) { int i; for (i = 0; i < POOL_SIZE; i++) { if ((*link)->pool->pic[i]) { AVFilterBufferRef *picref = (*link)->pool->pic[i]; /* free buffer: picrefs stored in the pool are not * supposed to contain a free callback */ av_freep(&picref->buf->data[0]); av_freep(&picref->buf); av_freep(&picref->audio); av_freep(&picref->video); av_freep(&(*link)->pool->pic[i]); } } (*link)->pool->count = 0;// av_freep(&(*link)->pool); } av_freep(link);} int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt, 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[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[dstpad_idx] = link; return ret; } /* re-hookup the link to the new destination filter we inserted */ link->dst = filt; 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[filt_dstpad_idx]->out_formats); if (link->out_chlayouts) avfilter_formats_changeref(&link->out_chlayouts, &filt->outputs[filt_dstpad_idx]->out_chlayouts); return 0;} int avfilter_config_links(AVFilterContext *filter){ int (*config_link)(AVFilterLink *); unsigned i; int ret; for (i = 0; i < filter->input_count; i ++) { AVFilterLink *link = filter->inputs[i]; if (!link) continue; 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 ((ret = avfilter_config_links(link->src)) < 0) return ret; if (!(config_link = link->srcpad->config_props)) config_link = avfilter_default_config_output_link; 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 (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 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;} static void ff_dlog_ref(void *ctx, AVFilterBufferRef *ref, int end){ 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->sample_aspect_ratio.num, ref->video->sample_aspect_ratio.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" : "");} static void ff_dlog_link(void *ctx, AVFilterLink *link, int end){ 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" : ""); }} #define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func) AVFilterBufferRef *avfilter_get_video_buffer(AVFilterLink *link, int perms, int w, int h){ AVFilterBufferRef *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); if (!ret) ret = avfilter_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;} AVFilterBufferRef *avfilter_get_video_buffer_ref_from_arrays(uint8_t * const data[4], const 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 nb_samples, 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, nb_samples, channel_layout, planar); if (!ret) ret = avfilter_default_get_audio_buffer(link, perms, sample_fmt, nb_samples, channel_layout, planar); if (ret) ret->type = AVMEDIA_TYPE_AUDIO; return ret;} AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_arrays(uint8_t *data[8], int linesize[8], int perms, int nb_samples, enum AVSampleFormat sample_fmt, int64_t channel_layout, int planar){ AVFilterBuffer *samples = av_mallocz(sizeof(AVFilterBuffer)); AVFilterBufferRef *samplesref = av_mallocz(sizeof(AVFilterBufferRef)); if (!samples || !samplesref) goto fail; samplesref->buf = samples; samplesref->buf->free = ff_avfilter_default_free_buffer; if (!(samplesref->audio = av_mallocz(sizeof(AVFilterBufferRefAudioProps)))) goto fail; samplesref->audio->nb_samples = nb_samples; samplesref->audio->channel_layout = channel_layout; samplesref->audio->planar = planar; /* make sure the buffer gets read permission or it's useless for output */ samplesref->perms = perms | AV_PERM_READ; samples->refcount = 1; samplesref->type = AVMEDIA_TYPE_AUDIO; samplesref->format = sample_fmt; memcpy(samples->data, data, sizeof(samples->data)); memcpy(samples->linesize, linesize, sizeof(samples->linesize)); memcpy(samplesref->data, data, sizeof(samplesref->data)); memcpy(samplesref->linesize, linesize, sizeof(samplesref->linesize)); return samplesref; fail: if (samplesref && samplesref->audio) av_freep(&samplesref->audio); av_freep(&samplesref); av_freep(&samples); return NULL;} int avfilter_request_frame(AVFilterLink *link){ FF_DPRINTF_START(NULL, request_frame); ff_dlog_link(NULL, link, 1); 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; if (link->srcpad->poll_frame) return link->srcpad->poll_frame(link); for (i = 0; i < link->src->input_count; i++) { int val; 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? */Lines 1–500 of 787. 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/* * 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 "libavutil/pixdesc.h" #include "libavutil/rational.h" #include "libavutil/audioconvert.h" #include "libavutil/imgutils.h" #include "libavutil/avassert.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; } 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; } static void store_in_pool(AVFilterBufferRef *ref) { int i; AVFilterPool *pool= ref->buf->priv; av_assert0(ref->buf->data[0]); if (pool->count == POOL_SIZE) { AVFilterBufferRef *ref1 = pool->pic[0]; av_freep(&ref1->video); av_freep(&ref1->audio); av_freep(&ref1->buf->data[0]); av_freep(&ref1->buf); av_free(ref1); memmove(&pool->pic[0], &pool->pic[1], sizeof(void*)*(POOL_SIZE-1)); pool->count--; pool->pic[POOL_SIZE-1] = NULL; } for (i = 0; i < POOL_SIZE; i++) { if (!pool->pic[i]) { pool->pic[i] = ref; pool->count++; break; } } } void avfilter_unref_buffer(AVFilterBufferRef *ref) { if (!ref) return; if (!(--ref->buf->refcount)) { if (!ref->buf->free) { store_in_pool(ref); return; } ref->buf->free(ref->buf); } av_freep(&ref->video); av_freep(&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))++; } 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]) 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 = &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; } void avfilter_link_free(AVFilterLink **link) { if (!*link) return; if ((*link)->pool) { int i; for (i = 0; i < POOL_SIZE; i++) { if ((*link)->pool->pic[i]) { AVFilterBufferRef *picref = (*link)->pool->pic[i]; /* free buffer: picrefs stored in the pool are not * supposed to contain a free callback */ av_freep(&picref->buf->data[0]); av_freep(&picref->buf); av_freep(&picref->audio); av_freep(&picref->video); av_freep(&(*link)->pool->pic[i]); } } (*link)->pool->count = 0; // av_freep(&(*link)->pool); } av_freep(link); } int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt, 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[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[dstpad_idx] = link; return ret; } /* re-hookup the link to the new destination filter we inserted */ link->dst = filt; 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[filt_dstpad_idx]->out_formats); if (link->out_chlayouts) avfilter_formats_changeref(&link->out_chlayouts, &filt->outputs[filt_dstpad_idx]->out_chlayouts); return 0; } int avfilter_config_links(AVFilterContext *filter) { int (*config_link)(AVFilterLink *); unsigned i; int ret; for (i = 0; i < filter->input_count; i ++) { AVFilterLink *link = filter->inputs[i]; if (!link) continue; 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 ((ret = avfilter_config_links(link->src)) < 0) return ret; if (!(config_link = link->srcpad->config_props)) config_link = avfilter_default_config_output_link; 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 (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 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; } static void ff_dlog_ref(void *ctx, AVFilterBufferRef *ref, int end) { 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->sample_aspect_ratio.num, ref->video->sample_aspect_ratio.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" : ""); } static void ff_dlog_link(void *ctx, AVFilterLink *link, int end) { 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" : ""); } } #define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func) AVFilterBufferRef *avfilter_get_video_buffer(AVFilterLink *link, int perms, int w, int h) { AVFilterBufferRef *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); if (!ret) ret = avfilter_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; } AVFilterBufferRef * avfilter_get_video_buffer_ref_from_arrays(uint8_t * const data[4], const 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 nb_samples, 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, nb_samples, channel_layout, planar); if (!ret) ret = avfilter_default_get_audio_buffer(link, perms, sample_fmt, nb_samples, channel_layout, planar); if (ret) ret->type = AVMEDIA_TYPE_AUDIO; return ret; } AVFilterBufferRef * avfilter_get_audio_buffer_ref_from_arrays(uint8_t *data[8], int linesize[8], int perms, int nb_samples, enum AVSampleFormat sample_fmt, int64_t channel_layout, int planar) { AVFilterBuffer *samples = av_mallocz(sizeof(AVFilterBuffer)); AVFilterBufferRef *samplesref = av_mallocz(sizeof(AVFilterBufferRef)); if (!samples || !samplesref) goto fail; samplesref->buf = samples; samplesref->buf->free = ff_avfilter_default_free_buffer; if (!(samplesref->audio = av_mallocz(sizeof(AVFilterBufferRefAudioProps)))) goto fail; samplesref->audio->nb_samples = nb_samples; samplesref->audio->channel_layout = channel_layout; samplesref->audio->planar = planar; /* make sure the buffer gets read permission or it's useless for output */ samplesref->perms = perms | AV_PERM_READ; samples->refcount = 1; samplesref->type = AVMEDIA_TYPE_AUDIO; samplesref->format = sample_fmt; memcpy(samples->data, data, sizeof(samples->data)); memcpy(samples->linesize, linesize, sizeof(samples->linesize)); memcpy(samplesref->data, data, sizeof(samplesref->data)); memcpy(samplesref->linesize, linesize, sizeof(samplesref->linesize)); return samplesref; fail: if (samplesref && samplesref->audio) av_freep(&samplesref->audio); av_freep(&samplesref); av_freep(&samples); return NULL; } int avfilter_request_frame(AVFilterLink *link) { FF_DPRINTF_START(NULL, request_frame); ff_dlog_link(NULL, link, 1); 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; if (link->srcpad->poll_frame) return link->srcpad->poll_frame(link); for (i = 0; i < link->src->input_count; i++) { int val; 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? */