diff options
Diffstat (limited to 'ffmpeg1/libavfilter/avfilter.c')
| -rw-r--r-- | ffmpeg1/libavfilter/avfilter.c | 777 |
1 files changed, 0 insertions, 777 deletions
diff --git a/ffmpeg1/libavfilter/avfilter.c b/ffmpeg1/libavfilter/avfilter.c deleted file mode 100644 index 8a907dc..0000000 --- a/ffmpeg1/libavfilter/avfilter.c +++ /dev/null @@ -1,777 +0,0 @@ -/* - * 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 - */ - -#include "libavutil/avassert.h" -#include "libavutil/avstring.h" -#include "libavutil/channel_layout.h" -#include "libavutil/common.h" -#include "libavutil/imgutils.h" -#include "libavutil/opt.h" -#include "libavutil/pixdesc.h" -#include "libavutil/rational.h" -#include "libavutil/samplefmt.h" - -#include "audio.h" -#include "avfilter.h" -#include "formats.h" -#include "internal.h" -#include "audio.h" - -static int ff_filter_frame_framed(AVFilterLink *link, AVFrame *frame); - -void ff_tlog_ref(void *ctx, AVFrame *ref, int end) -{ - av_unused char buf[16]; - ff_tlog(ctx, - "ref[%p buf:%p data:%p linesize[%d, %d, %d, %d] pts:%"PRId64" pos:%"PRId64, - ref, ref->buf, ref->data[0], - ref->linesize[0], ref->linesize[1], ref->linesize[2], ref->linesize[3], - ref->pts, av_frame_get_pkt_pos(ref)); - - if (ref->width) { - ff_tlog(ctx, " a:%d/%d s:%dx%d i:%c iskey:%d type:%c", - ref->sample_aspect_ratio.num, ref->sample_aspect_ratio.den, - ref->width, ref->height, - !ref->interlaced_frame ? 'P' : /* Progressive */ - ref->top_field_first ? 'T' : 'B', /* Top / Bottom */ - ref->key_frame, - av_get_picture_type_char(ref->pict_type)); - } - if (ref->nb_samples) { - ff_tlog(ctx, " cl:%"PRId64"d n:%d r:%d", - ref->channel_layout, - ref->nb_samples, - ref->sample_rate); - } - - ff_tlog(ctx, "]%s", end ? "\n" : ""); -} - -unsigned avfilter_version(void) { - av_assert0(LIBAVFILTER_VERSION_MICRO >= 100); - 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; -} - -void ff_command_queue_pop(AVFilterContext *filter) -{ - AVFilterCommand *c= filter->command_queue; - av_freep(&c->arg); - av_freep(&c->command); - filter->command_queue= c->next; - av_free(c); -} - -void ff_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->nb_outputs <= srcpad || dst->nb_inputs <= 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 (%s) and the '%s' filter input pad %d (%s)\n", - src->name, srcpad, (char *)av_x_if_null(av_get_media_type_string(src->output_pads[srcpad].type), "?"), - dst->name, dstpad, (char *)av_x_if_null(av_get_media_type_string(dst-> input_pads[dstpad].type), "?")); - 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; - av_assert0(AV_PIX_FMT_NONE == -1 && AV_SAMPLE_FMT_NONE == -1); - link->format = -1; - - return 0; -} - -void avfilter_link_free(AVFilterLink **link) -{ - if (!*link) - return; - - av_frame_free(&(*link)->partial_buf); - - av_freep(link); -} - -int avfilter_link_get_channels(AVFilterLink *link) -{ - return link->channels; -} - -void avfilter_link_set_closed(AVFilterLink *link, int closed) -{ - link->closed = closed; -} - -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_VERBOSE, "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) - 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 avfilter_config_links(AVFilterContext *filter) -{ - int (*config_link)(AVFilterLink *); - unsigned i; - int ret; - - for (i = 0; i < filter->nb_inputs; i ++) { - AVFilterLink *link = filter->inputs[i]; - AVFilterLink *inlink; - - if (!link) continue; - - inlink = link->src->nb_inputs ? link->src->inputs[0] : NULL; - link->current_pts = AV_NOPTS_VALUE; - - 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)) { - if (link->src->nb_inputs != 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) { - av_log(link->src, AV_LOG_ERROR, - "Failed to configure output pad on %s\n", - link->src->name); - return ret; - } - - switch (link->type) { - case AVMEDIA_TYPE_VIDEO: - if (!link->time_base.num && !link->time_base.den) - link->time_base = inlink ? inlink->time_base : AV_TIME_BASE_Q; - - if (!link->sample_aspect_ratio.num && !link->sample_aspect_ratio.den) - link->sample_aspect_ratio = inlink ? - inlink->sample_aspect_ratio : (AVRational){1,1}; - - if (inlink && !link->frame_rate.num && !link->frame_rate.den) - link->frame_rate = inlink->frame_rate; - - if (inlink) { - if (!link->w) - link->w = inlink->w; - if (!link->h) - link->h = inlink->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); - } - break; - - case AVMEDIA_TYPE_AUDIO: - if (inlink) { - if (!link->time_base.num && !link->time_base.den) - link->time_base = inlink->time_base; - } - - if (!link->time_base.num && !link->time_base.den) - link->time_base = (AVRational) {1, link->sample_rate}; - } - - if ((config_link = link->dstpad->config_props)) - if ((ret = config_link(link)) < 0) { - av_log(link->src, AV_LOG_ERROR, - "Failed to configure input pad on %s\n", - link->dst->name); - return ret; - } - - link->init_state = AVLINK_INIT; - } - } - - return 0; -} - -void ff_tlog_link(void *ctx, AVFilterLink *link, int end) -{ - if (link->type == AVMEDIA_TYPE_VIDEO) { - ff_tlog(ctx, - "link[%p s:%dx%d fmt:%s %s->%s]%s", - link, link->w, link->h, - av_get_pix_fmt_name(link->format), - 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); - - ff_tlog(ctx, - "link[%p r:%d cl:%s fmt:%s %s->%s]%s", - link, (int)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 ff_request_frame(AVFilterLink *link) -{ - int ret = -1; - FF_TPRINTF_START(NULL, request_frame); ff_tlog_link(NULL, link, 1); - - if (link->closed) - return AVERROR_EOF; - if (link->srcpad->request_frame) - ret = link->srcpad->request_frame(link); - else if (link->src->inputs[0]) - ret = ff_request_frame(link->src->inputs[0]); - if (ret == AVERROR_EOF && link->partial_buf) { - AVFrame *pbuf = link->partial_buf; - link->partial_buf = NULL; - ret = ff_filter_frame_framed(link, pbuf); - } - if (ret == AVERROR_EOF) - link->closed = 1; - return ret; -} - -int ff_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->nb_inputs; i++) { - int val; - if (!link->src->inputs[i]) - return -1; - val = ff_poll_frame(link->src->inputs[i]); - min = FFMIN(min, val); - } - - return min; -} - -void ff_update_link_current_pts(AVFilterLink *link, int64_t pts) -{ - if (pts == AV_NOPTS_VALUE) - return; - link->current_pts = av_rescale_q(pts, link->time_base, AV_TIME_BASE_Q); - /* TODO use duration */ - if (link->graph && link->age_index >= 0) - ff_avfilter_graph_update_heap(link->graph, link); -} - -int avfilter_process_command(AVFilterContext *filter, const char *cmd, const char *arg, char *res, int res_len, int flags) -{ - if(!strcmp(cmd, "ping")){ - av_strlcatf(res, res_len, "pong from:%s %s\n", filter->filter->name, filter->name); - return 0; - }else if(filter->filter->process_command) { - return filter->filter->process_command(filter, cmd, arg, res, res_len, flags); - } - return AVERROR(ENOSYS); -} - -#define MAX_REGISTERED_AVFILTERS_NB 256 - -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; - - for (i = 0; registered_avfilters[i]; i++) - if (!strcmp(registered_avfilters[i]->name, name)) - return registered_avfilters[i]; - - return NULL; -} - -int avfilter_register(AVFilter *filter) -{ - int i; - - if (next_registered_avfilter_idx == MAX_REGISTERED_AVFILTERS_NB) { - av_log(NULL, AV_LOG_ERROR, - "Maximum number of registered filters %d reached, " - "impossible to register filter with name '%s'\n", - MAX_REGISTERED_AVFILTERS_NB, filter->name); - return AVERROR(ENOMEM); - } - - for(i=0; filter->inputs && filter->inputs[i].name; i++) { - const AVFilterPad *input = &filter->inputs[i]; - av_assert0( !input->filter_frame - || (!input->start_frame && !input->end_frame)); - } - - registered_avfilters[next_registered_avfilter_idx++] = filter; - return 0; -} - -AVFilter **av_filter_next(AVFilter **filter) -{ - return filter ? ++filter : ®istered_avfilters[0]; -} - -void avfilter_uninit(void) -{ - memset(registered_avfilters, 0, sizeof(registered_avfilters)); - next_registered_avfilter_idx = 0; -} - -static int pad_count(const AVFilterPad *pads) -{ - int count; - - if (!pads) - return 0; - - for(count = 0; pads->name; count ++) pads ++; - return count; -} - -static const char *default_filter_name(void *filter_ctx) -{ - AVFilterContext *ctx = filter_ctx; - return ctx->name ? ctx->name : ctx->filter->name; -} - -static void *filter_child_next(void *obj, void *prev) -{ - AVFilterContext *ctx = obj; - if (!prev && ctx->filter && ctx->filter->priv_class) - return ctx->priv; - return NULL; -} - -static const AVClass *filter_child_class_next(const AVClass *prev) -{ - AVFilter **filter_ptr = NULL; - - /* find the filter that corresponds to prev */ - while (prev && *(filter_ptr = av_filter_next(filter_ptr))) - if ((*filter_ptr)->priv_class == prev) - break; - - /* could not find filter corresponding to prev */ - if (prev && !(*filter_ptr)) - return NULL; - - /* find next filter with specific options */ - while (*(filter_ptr = av_filter_next(filter_ptr))) - if ((*filter_ptr)->priv_class) - return (*filter_ptr)->priv_class; - return NULL; -} - -static const AVClass avfilter_class = { - .class_name = "AVFilter", - .item_name = default_filter_name, - .version = LIBAVUTIL_VERSION_INT, - .category = AV_CLASS_CATEGORY_FILTER, - .child_next = filter_child_next, - .child_class_next = filter_child_class_next, -}; - -const AVClass *avfilter_get_class(void) -{ - return &avfilter_class; -} - -int avfilter_open(AVFilterContext **filter_ctx, AVFilter *filter, const char *inst_name) -{ - AVFilterContext *ret; - *filter_ctx = NULL; - - if (!filter) - 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; - if (filter->priv_size) { - ret->priv = av_mallocz(filter->priv_size); - if (!ret->priv) - goto err; - } - - ret->nb_inputs = pad_count(filter->inputs); - if (ret->nb_inputs ) { - ret->input_pads = av_malloc(sizeof(AVFilterPad) * ret->nb_inputs); - if (!ret->input_pads) - goto err; - memcpy(ret->input_pads, filter->inputs, sizeof(AVFilterPad) * ret->nb_inputs); - ret->inputs = av_mallocz(sizeof(AVFilterLink*) * ret->nb_inputs); - if (!ret->inputs) - goto err; - } - - ret->nb_outputs = pad_count(filter->outputs); - if (ret->nb_outputs) { - ret->output_pads = av_malloc(sizeof(AVFilterPad) * ret->nb_outputs); - if (!ret->output_pads) - goto err; - memcpy(ret->output_pads, filter->outputs, sizeof(AVFilterPad) * ret->nb_outputs); - ret->outputs = av_mallocz(sizeof(AVFilterLink*) * ret->nb_outputs); - if (!ret->outputs) - goto err; - } -#if FF_API_FOO_COUNT - ret->output_count = ret->nb_outputs; - ret->input_count = ret->nb_inputs; -#endif - - *filter_ctx = ret; - return 0; - -err: - av_freep(&ret->inputs); - av_freep(&ret->input_pads); - ret->nb_inputs = 0; - av_freep(&ret->outputs); - av_freep(&ret->output_pads); - ret->nb_outputs = 0; - av_freep(&ret->priv); - av_free(ret); - return AVERROR(ENOMEM); -} - -void avfilter_free(AVFilterContext *filter) -{ - int i; - AVFilterLink *link; - - if (!filter) - return; - - if (filter->filter->uninit) - filter->filter->uninit(filter); - if (filter->filter->shorthand) - av_opt_free(filter->priv); - - for (i = 0; i < filter->nb_inputs; 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); - } - avfilter_link_free(&link); - } - for (i = 0; i < filter->nb_outputs; 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); - } - avfilter_link_free(&link); - } - - 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); - while(filter->command_queue){ - ff_command_queue_pop(filter); - } - av_free(filter); -} - -int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque) -{ - int ret=0; - - if (filter->filter->shorthand) { - av_assert0(filter->priv); - av_assert0(filter->filter->priv_class); - *(const AVClass **)filter->priv = filter->filter->priv_class; - av_opt_set_defaults(filter->priv); - ret = av_opt_set_from_string(filter->priv, args, - filter->filter->shorthand, "=", ":"); - if (ret < 0) - return ret; - args = NULL; - } - if (filter->filter->init_opaque) - ret = filter->filter->init_opaque(filter, args, opaque); - else if (filter->filter->init) - ret = filter->filter->init(filter, args); - return ret; -} - -const char *avfilter_pad_get_name(AVFilterPad *pads, int pad_idx) -{ - return pads[pad_idx].name; -} - -enum AVMediaType avfilter_pad_get_type(AVFilterPad *pads, int pad_idx) -{ - return pads[pad_idx].type; -} - -static int default_filter_frame(AVFilterLink *link, AVFrame *frame) -{ - return ff_filter_frame(link->dst->outputs[0], frame); -} - -static int ff_filter_frame_framed(AVFilterLink *link, AVFrame *frame) -{ - int (*filter_frame)(AVFilterLink *, AVFrame *); - AVFilterPad *dst = link->dstpad; - AVFrame *out; - int ret; - AVFilterCommand *cmd= link->dst->command_queue; - int64_t pts; - - if (link->closed) { - av_frame_free(&frame); - return AVERROR_EOF; - } - - if (!(filter_frame = dst->filter_frame)) - filter_frame = default_filter_frame; - - /* copy the frame if needed */ - if (dst->needs_writable && !av_frame_is_writable(frame)) { - av_log(link->dst, AV_LOG_DEBUG, "Copying data in avfilter.\n"); - - /* Maybe use ff_copy_buffer_ref instead? */ - switch (link->type) { - case AVMEDIA_TYPE_VIDEO: - out = ff_get_video_buffer(link, link->w, link->h); - break; - case AVMEDIA_TYPE_AUDIO: - out = ff_get_audio_buffer(link, frame->nb_samples); - break; - default: return AVERROR(EINVAL); - } - if (!out) { - av_frame_free(&frame); - return AVERROR(ENOMEM); - } - av_frame_copy_props(out, frame); - - switch (link->type) { - case AVMEDIA_TYPE_VIDEO: - av_image_copy(out->data, out->linesize, (const uint8_t **)frame->data, frame->linesize, - frame->format, frame->width, frame->height); - break; - case AVMEDIA_TYPE_AUDIO: - av_samples_copy(out->extended_data, frame->extended_data, - 0, 0, frame->nb_samples, - av_get_channel_layout_nb_channels(frame->channel_layout), - frame->format); - break; - default: return AVERROR(EINVAL); - } - - av_frame_free(&frame); - } else - out = frame; - - while(cmd && cmd->time <= out->pts * av_q2d(link->time_base)){ - av_log(link->dst, AV_LOG_DEBUG, - "Processing command time:%f command:%s arg:%s\n", - cmd->time, cmd->command, cmd->arg); - avfilter_process_command(link->dst, cmd->command, cmd->arg, 0, 0, cmd->flags); - ff_command_queue_pop(link->dst); - cmd= link->dst->command_queue; - } - - pts = out->pts; - ret = filter_frame(link, out); - ff_update_link_current_pts(link, pts); - return ret; -} - -static int ff_filter_frame_needs_framing(AVFilterLink *link, AVFrame *frame) -{ - int insamples = frame->nb_samples, inpos = 0, nb_samples; - AVFrame *pbuf = link->partial_buf; - int nb_channels = av_frame_get_channels(frame); - int ret = 0; - - /* Handle framing (min_samples, max_samples) */ - while (insamples) { - if (!pbuf) { - AVRational samples_tb = { 1, link->sample_rate }; - pbuf = ff_get_audio_buffer(link, link->partial_buf_size); - if (!pbuf) { - av_log(link->dst, AV_LOG_WARNING, - "Samples dropped due to memory allocation failure.\n"); - return 0; - } - av_frame_copy_props(pbuf, frame); - pbuf->pts = frame->pts + - av_rescale_q(inpos, samples_tb, link->time_base); - pbuf->nb_samples = 0; - } - nb_samples = FFMIN(insamples, - link->partial_buf_size - pbuf->nb_samples); - av_samples_copy(pbuf->extended_data, frame->extended_data, - pbuf->nb_samples, inpos, - nb_samples, nb_channels, link->format); - inpos += nb_samples; - insamples -= nb_samples; - pbuf->nb_samples += nb_samples; - if (pbuf->nb_samples >= link->min_samples) { - ret = ff_filter_frame_framed(link, pbuf); - pbuf = NULL; - } - } - av_frame_free(&frame); - link->partial_buf = pbuf; - return ret; -} - -int ff_filter_frame(AVFilterLink *link, AVFrame *frame) -{ - FF_TPRINTF_START(NULL, filter_frame); ff_tlog_link(NULL, link, 1); ff_tlog(NULL, " "); ff_tlog_ref(NULL, frame, 1); - - /* Consistency checks */ - if (link->type == AVMEDIA_TYPE_VIDEO) { - if (strcmp(link->dst->filter->name, "scale")) { - av_assert1(frame->format == link->format); - av_assert1(frame->width == link->w); - av_assert1(frame->height == link->h); - } - } else { - av_assert1(frame->format == link->format); - av_assert1(av_frame_get_channels(frame) == link->channels); - av_assert1(frame->channel_layout == link->channel_layout); - av_assert1(frame->sample_rate == link->sample_rate); - } - - /* Go directly to actual filtering if possible */ - if (link->type == AVMEDIA_TYPE_AUDIO && - link->min_samples && - (link->partial_buf || - frame->nb_samples < link->min_samples || - frame->nb_samples > link->max_samples)) { - return ff_filter_frame_needs_framing(link, frame); - } else { - return ff_filter_frame_framed(link, frame); - } -} |