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@@ -61,281 +61,12 @@ typedef struct { |
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AVFilterContext *aresample; |
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} BufferSourceContext; |
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#define FIFO_SIZE 8 |
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#define CHECK_PARAM_CHANGE(s, c, width, height, format)\ |
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if (c->w != width || c->h != height || c->pix_fmt != format) {\ |
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av_log(s, AV_LOG_ERROR, "Changing frame properties on the fly is not supported.\n");\ |
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return AVERROR(EINVAL);\ |
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} |
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static void buf_free(AVFilterBuffer *ptr) |
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{ |
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av_free(ptr); |
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return; |
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} |
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static void set_link_source(AVFilterContext *src, AVFilterLink *link) |
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{ |
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link->src = src; |
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link->srcpad = &(src->output_pads[0]); |
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src->outputs[0] = link; |
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} |
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static int reconfigure_filter(BufferSourceContext *abuffer, AVFilterContext *filt_ctx) |
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{ |
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int ret; |
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AVFilterLink * const inlink = filt_ctx->inputs[0]; |
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AVFilterLink * const outlink = filt_ctx->outputs[0]; |
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inlink->format = abuffer->sample_format; |
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inlink->channel_layout = abuffer->channel_layout; |
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inlink->sample_rate = abuffer->sample_rate; |
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filt_ctx->filter->uninit(filt_ctx); |
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memset(filt_ctx->priv, 0, filt_ctx->filter->priv_size); |
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if ((ret = filt_ctx->filter->init(filt_ctx, NULL , NULL)) < 0) |
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return ret; |
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if ((ret = inlink->srcpad->config_props(inlink)) < 0) |
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return ret; |
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return outlink->srcpad->config_props(outlink); |
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} |
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static int insert_filter(BufferSourceContext *abuffer, |
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AVFilterLink *link, AVFilterContext **filt_ctx, |
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const char *filt_name) |
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{ |
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int ret; |
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if ((ret = avfilter_open(filt_ctx, avfilter_get_by_name(filt_name), NULL)) < 0) |
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return ret; |
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link->src->outputs[0] = NULL; |
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if ((ret = avfilter_link(link->src, 0, *filt_ctx, 0)) < 0) { |
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link->src->outputs[0] = link; |
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return ret; |
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} |
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set_link_source(*filt_ctx, link); |
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if ((ret = reconfigure_filter(abuffer, *filt_ctx)) < 0) { |
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avfilter_free(*filt_ctx); |
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return ret; |
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} |
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return 0; |
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} |
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static void remove_filter(AVFilterContext **filt_ctx) |
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{ |
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AVFilterLink *outlink = (*filt_ctx)->outputs[0]; |
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AVFilterContext *src = (*filt_ctx)->inputs[0]->src; |
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(*filt_ctx)->outputs[0] = NULL; |
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avfilter_free(*filt_ctx); |
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*filt_ctx = NULL; |
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set_link_source(src, outlink); |
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} |
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static inline void log_input_change(void *ctx, AVFilterLink *link, AVFilterBufferRef *ref) |
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{ |
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char old_layout_str[16], new_layout_str[16]; |
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av_get_channel_layout_string(old_layout_str, sizeof(old_layout_str), |
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-1, link->channel_layout); |
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av_get_channel_layout_string(new_layout_str, sizeof(new_layout_str), |
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-1, ref->audio->channel_layout); |
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av_log(ctx, AV_LOG_INFO, |
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"Audio input format changed: " |
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"%s:%s:%d -> %s:%s:%d, normalizing\n", |
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av_get_sample_fmt_name(link->format), |
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old_layout_str, (int)link->sample_rate, |
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av_get_sample_fmt_name(ref->format), |
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new_layout_str, ref->audio->sample_rate); |
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} |
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static int check_format_change_video(AVFilterContext *buffer_filter, |
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AVFilterBufferRef *picref) |
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{ |
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BufferSourceContext *c = buffer_filter->priv; |
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int ret; |
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if (picref->video->w != c->w || picref->video->h != c->h || picref->format != c->pix_fmt) { |
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AVFilterContext *scale = buffer_filter->outputs[0]->dst; |
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AVFilterLink *link; |
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char scale_param[1024]; |
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av_log(buffer_filter, AV_LOG_INFO, |
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"Buffer video input changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n", |
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c->w, c->h, av_pix_fmt_descriptors[c->pix_fmt].name, |
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picref->video->w, picref->video->h, av_pix_fmt_descriptors[picref->format].name); |
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if (!scale || strcmp(scale->filter->name, "scale")) { |
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AVFilter *f = avfilter_get_by_name("scale"); |
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av_log(buffer_filter, AV_LOG_INFO, "Inserting scaler filter\n"); |
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if ((ret = avfilter_open(&scale, f, "Input equalizer")) < 0) |
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return ret; |
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c->scale = scale; |
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snprintf(scale_param, sizeof(scale_param)-1, "%d:%d:%s", c->w, c->h, c->sws_param); |
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if ((ret = avfilter_init_filter(scale, scale_param, NULL)) < 0) { |
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return ret; |
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} |
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if ((ret = avfilter_insert_filter(buffer_filter->outputs[0], scale, 0, 0)) < 0) { |
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return ret; |
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} |
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scale->outputs[0]->time_base = scale->inputs[0]->time_base; |
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scale->outputs[0]->format= c->pix_fmt; |
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} else if (!strcmp(scale->filter->name, "scale")) { |
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snprintf(scale_param, sizeof(scale_param)-1, "%d:%d:%s", |
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scale->outputs[0]->w, scale->outputs[0]->h, c->sws_param); |
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scale->filter->init(scale, scale_param, NULL); |
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} |
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c->pix_fmt = scale->inputs[0]->format = picref->format; |
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c->w = scale->inputs[0]->w = picref->video->w; |
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c->h = scale->inputs[0]->h = picref->video->h; |
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link = scale->outputs[0]; |
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if ((ret = link->srcpad->config_props(link)) < 0) |
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return ret; |
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} |
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return 0; |
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} |
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static int check_format_change_audio(AVFilterContext *ctx, |
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AVFilterBufferRef *samplesref) |
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{ |
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BufferSourceContext *abuffer = ctx->priv; |
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AVFilterLink *link; |
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int ret, logged = 0; |
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link = ctx->outputs[0]; |
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if (samplesref->audio->sample_rate != link->sample_rate || |
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samplesref->format != link->format || |
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samplesref->audio->channel_layout != link->channel_layout) { |
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log_input_change(ctx, link, samplesref); |
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logged = 1; |
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abuffer->sample_rate = samplesref->audio->sample_rate; |
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abuffer->sample_format = samplesref->format; |
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abuffer->channel_layout = samplesref->audio->channel_layout; |
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if (!abuffer->aresample) { |
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ret = insert_filter(abuffer, link, &abuffer->aresample, "aresample"); |
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if (ret < 0) return ret; |
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} else { |
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link = abuffer->aresample->outputs[0]; |
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if (samplesref->audio->sample_rate == link->sample_rate && |
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samplesref->format == link->format && |
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samplesref->audio->channel_layout == link->channel_layout) |
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remove_filter(&abuffer->aresample); |
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else |
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if ((ret = reconfigure_filter(abuffer, abuffer->aresample)) < 0) |
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return ret; |
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} |
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} |
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return 0; |
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} |
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static int check_format_change(AVFilterContext *buffer_filter, |
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AVFilterBufferRef *picref) |
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{ |
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switch (buffer_filter->outputs[0]->type) { |
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case AVMEDIA_TYPE_VIDEO: |
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return check_format_change_video(buffer_filter, picref); |
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case AVMEDIA_TYPE_AUDIO: |
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return check_format_change_audio(buffer_filter, picref); |
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default: |
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return AVERROR(ENOSYS); |
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} |
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} |
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static AVFilterBufferRef *copy_buffer_ref(AVFilterContext *ctx, |
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AVFilterBufferRef *ref) |
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{ |
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AVFilterLink *outlink = ctx->outputs[0]; |
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AVFilterBufferRef *buf; |
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int channels, data_size, i; |
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switch (outlink->type) { |
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case AVMEDIA_TYPE_VIDEO: |
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buf = avfilter_get_video_buffer(outlink, AV_PERM_WRITE, |
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ref->video->w, ref->video->h); |
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if(!buf) |
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return NULL; |
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av_image_copy(buf->data, buf->linesize, |
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(void*)ref->data, ref->linesize, |
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ref->format, ref->video->w, ref->video->h); |
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break; |
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case AVMEDIA_TYPE_AUDIO: |
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buf = ff_get_audio_buffer(outlink, AV_PERM_WRITE, |
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ref->audio->nb_samples); |
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if(!buf) |
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return NULL; |
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channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout); |
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av_samples_copy(buf->extended_data, ref->buf->extended_data, |
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0, 0, ref->audio->nb_samples, |
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channels, |
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ref->format); |
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break; |
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default: |
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return NULL; |
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} |
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avfilter_copy_buffer_ref_props(buf, ref); |
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return buf; |
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} |
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int av_buffersrc_add_ref(AVFilterContext *buffer_filter, |
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AVFilterBufferRef *picref, int flags) |
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{ |
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BufferSourceContext *c = buffer_filter->priv; |
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AVFilterBufferRef *buf; |
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int ret; |
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if (!picref) { |
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c->eof = 1; |
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return 0; |
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} else if (c->eof) |
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return AVERROR(EINVAL); |
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if (!av_fifo_space(c->fifo) && |
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(ret = av_fifo_realloc2(c->fifo, av_fifo_size(c->fifo) + |
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sizeof(buf))) < 0) |
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return ret; |
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if (!(flags & AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT)) { |
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ret = check_format_change(buffer_filter, picref); |
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if (ret < 0) |
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return ret; |
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} |
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if (flags & AV_BUFFERSRC_FLAG_NO_COPY) |
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buf = picref; |
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else |
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buf = copy_buffer_ref(buffer_filter, picref); |
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if(!buf) |
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return -1; |
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if ((ret = av_fifo_generic_write(c->fifo, &buf, sizeof(buf), NULL)) < 0) { |
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if (buf != picref) |
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avfilter_unref_buffer(buf); |
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return ret; |
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} |
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c->nb_failed_requests = 0; |
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return 0; |
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} |
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int av_vsrc_buffer_add_video_buffer_ref(AVFilterContext *buffer_filter, |
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AVFilterBufferRef *picref, int flags) |
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{ |
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@@ -345,33 +76,6 @@ int av_vsrc_buffer_add_video_buffer_ref(AVFilterContext *buffer_filter, |
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#if CONFIG_AVCODEC |
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#include "avcodec.h" |
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int av_buffersrc_add_frame(AVFilterContext *buffer_src, |
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const AVFrame *frame, int flags) |
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{ |
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AVFilterBufferRef *picref; |
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int ret; |
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if (!frame) /* NULL for EOF */ |
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return av_buffersrc_add_ref(buffer_src, NULL, flags); |
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switch (buffer_src->outputs[0]->type) { |
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case AVMEDIA_TYPE_VIDEO: |
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picref = avfilter_get_video_buffer_ref_from_frame(frame, AV_PERM_WRITE); |
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break; |
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case AVMEDIA_TYPE_AUDIO: |
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picref = avfilter_get_audio_buffer_ref_from_frame(frame, AV_PERM_WRITE); |
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break; |
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default: |
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return AVERROR(ENOSYS); |
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} |
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if (!picref) |
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return AVERROR(ENOMEM); |
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ret = av_buffersrc_add_ref(buffer_src, picref, flags); |
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picref->buf->data[0] = NULL; |
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avfilter_unref_buffer(picref); |
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return ret; |
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} |
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int av_vsrc_buffer_add_frame(AVFilterContext *buffer_src, |
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const AVFrame *frame, int flags) |
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{ |
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@@ -379,193 +83,11 @@ int av_vsrc_buffer_add_frame(AVFilterContext *buffer_src, |
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} |
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#endif |
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unsigned av_buffersrc_get_nb_failed_requests(AVFilterContext *buffer_src) |
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{ |
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return ((BufferSourceContext *)buffer_src->priv)->nb_failed_requests; |
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} |
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unsigned av_vsrc_buffer_get_nb_failed_requests(AVFilterContext *buffer_src) |
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{ |
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return ((BufferSourceContext *)buffer_src->priv)->nb_failed_requests; |
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} |
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static av_cold int init_video(AVFilterContext *ctx, const char *args, void *opaque) |
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{ |
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BufferSourceContext *c = ctx->priv; |
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char pix_fmt_str[128]; |
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int ret, n = 0; |
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*c->sws_param = 0; |
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if (!args || |
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(n = sscanf(args, "%d:%d:%127[^:]:%d:%d:%d:%d:%255c", &c->w, &c->h, pix_fmt_str, |
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&c->time_base.num, &c->time_base.den, |
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&c->sample_aspect_ratio.num, &c->sample_aspect_ratio.den, c->sws_param)) < 7) { |
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av_log(ctx, AV_LOG_ERROR, "Expected at least 7 arguments, but only %d found in '%s'\n", n, args); |
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return AVERROR(EINVAL); |
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} |
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if ((ret = ff_parse_pixel_format(&c->pix_fmt, pix_fmt_str, ctx)) < 0) |
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return ret; |
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if (!(c->fifo = av_fifo_alloc(sizeof(AVFilterBufferRef*)))) |
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return AVERROR(ENOMEM); |
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av_log(ctx, AV_LOG_INFO, "w:%d h:%d pixfmt:%s tb:%d/%d sar:%d/%d sws_param:%s\n", |
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c->w, c->h, av_pix_fmt_descriptors[c->pix_fmt].name, |
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c->time_base.num, c->time_base.den, |
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c->sample_aspect_ratio.num, c->sample_aspect_ratio.den, c->sws_param); |
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return 0; |
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} |
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static av_cold int init_audio(AVFilterContext *ctx, const char *args0, void *opaque) |
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{ |
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BufferSourceContext *abuffer = ctx->priv; |
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char *arg = NULL, *ptr, chlayout_str[16]; |
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char *args = av_strdup(args0); |
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int ret; |
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arg = av_strtok(args, ":", &ptr); |
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#define ADD_FORMAT(fmt_name) \ |
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if (!arg) \ |
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goto arg_fail; \ |
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if ((ret = ff_parse_##fmt_name(&abuffer->fmt_name, arg, ctx)) < 0) { \ |
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av_freep(&args); \ |
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return ret; \ |
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} \ |
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if (*args) \ |
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arg = av_strtok(NULL, ":", &ptr) |
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ADD_FORMAT(time_base); |
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ADD_FORMAT(sample_rate); |
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ADD_FORMAT(sample_format); |
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ADD_FORMAT(channel_layout); |
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abuffer->fifo = av_fifo_alloc(FIFO_SIZE*sizeof(AVFilterBufferRef*)); |
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if (!abuffer->fifo) { |
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av_log(ctx, AV_LOG_ERROR, "Failed to allocate fifo, filter init failed.\n"); |
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return AVERROR(ENOMEM); |
|
|
|
} |
|
|
|
|
|
|
|
av_get_channel_layout_string(chlayout_str, sizeof(chlayout_str), |
|
|
|
-1, abuffer->channel_layout); |
|
|
|
av_log(ctx, AV_LOG_INFO, "format:%s layout:%s rate:%d\n", |
|
|
|
av_get_sample_fmt_name(abuffer->sample_format), chlayout_str, |
|
|
|
abuffer->sample_rate); |
|
|
|
av_freep(&args); |
|
|
|
|
|
|
|
return 0; |
|
|
|
|
|
|
|
arg_fail: |
|
|
|
av_log(ctx, AV_LOG_ERROR, "Invalid arguments, must be of the form " |
|
|
|
"sample_rate:sample_fmt:channel_layout\n"); |
|
|
|
av_freep(&args); |
|
|
|
return AVERROR(EINVAL); |
|
|
|
} |
|
|
|
|
|
|
|
static av_cold void uninit(AVFilterContext *ctx) |
|
|
|
{ |
|
|
|
BufferSourceContext *s = ctx->priv; |
|
|
|
while (s->fifo && av_fifo_size(s->fifo)) { |
|
|
|
AVFilterBufferRef *buf; |
|
|
|
av_fifo_generic_read(s->fifo, &buf, sizeof(buf), NULL); |
|
|
|
avfilter_unref_buffer(buf); |
|
|
|
} |
|
|
|
av_fifo_free(s->fifo); |
|
|
|
s->fifo = NULL; |
|
|
|
avfilter_free(s->scale); |
|
|
|
s->scale = NULL; |
|
|
|
} |
|
|
|
|
|
|
|
static int query_formats_video(AVFilterContext *ctx) |
|
|
|
{ |
|
|
|
BufferSourceContext *c = ctx->priv; |
|
|
|
enum PixelFormat pix_fmts[] = { c->pix_fmt, PIX_FMT_NONE }; |
|
|
|
|
|
|
|
avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts)); |
|
|
|
return 0; |
|
|
|
} |
|
|
|
|
|
|
|
static int query_formats_audio(AVFilterContext *ctx) |
|
|
|
{ |
|
|
|
BufferSourceContext *abuffer = ctx->priv; |
|
|
|
AVFilterFormats *formats; |
|
|
|
AVFilterChannelLayouts *layouts; |
|
|
|
|
|
|
|
formats = NULL; |
|
|
|
avfilter_add_format(&formats, abuffer->sample_format); |
|
|
|
avfilter_set_common_sample_formats(ctx, formats); |
|
|
|
|
|
|
|
formats = NULL; |
|
|
|
avfilter_add_format(&formats, abuffer->sample_rate); |
|
|
|
ff_set_common_samplerates(ctx, formats); |
|
|
|
|
|
|
|
layouts = NULL; |
|
|
|
ff_add_channel_layout(&layouts, abuffer->channel_layout); |
|
|
|
ff_set_common_channel_layouts(ctx, layouts); |
|
|
|
|
|
|
|
return 0; |
|
|
|
} |
|
|
|
|
|
|
|
static int config_output_video(AVFilterLink *link) |
|
|
|
{ |
|
|
|
BufferSourceContext *c = link->src->priv; |
|
|
|
|
|
|
|
link->w = c->w; |
|
|
|
link->h = c->h; |
|
|
|
link->sample_aspect_ratio = c->sample_aspect_ratio; |
|
|
|
link->time_base = c->time_base; |
|
|
|
|
|
|
|
return 0; |
|
|
|
} |
|
|
|
|
|
|
|
static int config_output_audio(AVFilterLink *outlink) |
|
|
|
{ |
|
|
|
BufferSourceContext *abuffer = outlink->src->priv; |
|
|
|
outlink->sample_rate = abuffer->sample_rate; |
|
|
|
outlink->time_base = abuffer->time_base; |
|
|
|
return 0; |
|
|
|
} |
|
|
|
|
|
|
|
static int request_frame(AVFilterLink *link) |
|
|
|
{ |
|
|
|
BufferSourceContext *c = link->src->priv; |
|
|
|
AVFilterBufferRef *buf; |
|
|
|
|
|
|
|
if (!av_fifo_size(c->fifo)) { |
|
|
|
if (c->eof) |
|
|
|
return AVERROR_EOF; |
|
|
|
c->nb_failed_requests++; |
|
|
|
return AVERROR(EAGAIN); |
|
|
|
} |
|
|
|
av_fifo_generic_read(c->fifo, &buf, sizeof(buf), NULL); |
|
|
|
|
|
|
|
switch (link->type) { |
|
|
|
case AVMEDIA_TYPE_VIDEO: |
|
|
|
avfilter_start_frame(link, avfilter_ref_buffer(buf, ~0)); |
|
|
|
avfilter_draw_slice(link, 0, link->h, 1); |
|
|
|
avfilter_end_frame(link); |
|
|
|
avfilter_unref_buffer(buf); |
|
|
|
break; |
|
|
|
case AVMEDIA_TYPE_AUDIO: |
|
|
|
ff_filter_samples(link, avfilter_ref_buffer(buf, ~0)); |
|
|
|
avfilter_unref_buffer(buf); |
|
|
|
break; |
|
|
|
default: |
|
|
|
return AVERROR(ENOSYS); |
|
|
|
} |
|
|
|
return 0; |
|
|
|
} |
|
|
|
|
|
|
|
static int poll_frame(AVFilterLink *link) |
|
|
|
{ |
|
|
|
BufferSourceContext *c = link->src->priv; |
|
|
|
int size = av_fifo_size(c->fifo); |
|
|
|
if (!size && c->eof) |
|
|
|
return AVERROR_EOF; |
|
|
|
return size/sizeof(AVFilterBufferRef*); |
|
|
|
} |
|
|
|
|
|
|
|
int av_asrc_buffer_add_audio_buffer_ref(AVFilterContext *ctx, |
|
|
|
AVFilterBufferRef *samplesref, |
|
|
|
int av_unused flags) |
|
|
@@ -619,40 +141,3 @@ int av_asrc_buffer_add_buffer(AVFilterContext *ctx, |
|
|
|
pts, flags); |
|
|
|
) |
|
|
|
} |
|
|
|
|
|
|
|
AVFilter avfilter_vsrc_buffer = { |
|
|
|
.name = "buffer", |
|
|
|
.description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them accessible to the filterchain."), |
|
|
|
.priv_size = sizeof(BufferSourceContext), |
|
|
|
.query_formats = query_formats_video, |
|
|
|
|
|
|
|
.init = init_video, |
|
|
|
.uninit = uninit, |
|
|
|
|
|
|
|
.inputs = (const AVFilterPad[]) {{ .name = NULL }}, |
|
|
|
.outputs = (const AVFilterPad[]) {{ .name = "default", |
|
|
|
.type = AVMEDIA_TYPE_VIDEO, |
|
|
|
.request_frame = request_frame, |
|
|
|
.poll_frame = poll_frame, |
|
|
|
.config_props = config_output_video, }, |
|
|
|
{ .name = NULL}}, |
|
|
|
}; |
|
|
|
|
|
|
|
AVFilter avfilter_asrc_abuffer = { |
|
|
|
.name = "abuffer", |
|
|
|
.description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them accessible to the filterchain."), |
|
|
|
.priv_size = sizeof(BufferSourceContext), |
|
|
|
.query_formats = query_formats_audio, |
|
|
|
|
|
|
|
.init = init_audio, |
|
|
|
.uninit = uninit, |
|
|
|
|
|
|
|
.inputs = (const AVFilterPad[]) {{ .name = NULL }}, |
|
|
|
.outputs = (const AVFilterPad[]) {{ .name = "default", |
|
|
|
.type = AVMEDIA_TYPE_AUDIO, |
|
|
|
.request_frame = request_frame, |
|
|
|
.poll_frame = poll_frame, |
|
|
|
.config_props = config_output_audio, }, |
|
|
|
{ .name = NULL}}, |
|
|
|
}; |
|
|
|
|