int configure_filtergraph(FilterGraph *fg)
{
AVFilterInOut *inputs, *outputs, *cur;
int ret, i, init = !fg->graph, simple = !fg->graph_desc;
const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
fg->graph_desc;
avfilter_graph_free(&fg->graph);
if (!(fg->graph = avfilter_graph_alloc()))
return AVERROR(ENOMEM);
if (simple) {
OutputStream *ost = fg->outputs[0]->ost;
char args[255];
snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
fg->graph->scale_sws_opts = av_strdup(args);
}
if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
return ret;
if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
"exactly one input and output.\n", graph_desc);
return AVERROR(EINVAL);
}
for (cur = inputs; !simple && init && cur; cur = cur->next)
init_input_filter(fg, cur);
for (cur = inputs, i = 0; cur; cur = cur->next, i++)
if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
return ret;
avfilter_inout_free(&inputs);
if (!init || simple) {
/* we already know the mappings between lavfi outputs and output streams,
* so we can finish the setup */
for (cur = outputs, i = 0; cur; cur = cur->next, i++)
configure_output_filter(fg, fg->outputs[i], cur);
avfilter_inout_free(&outputs);
if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
return ret;
} else {
/* wait until output mappings are processed */
for (cur = outputs; cur;) {
fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
&fg->nb_outputs, fg->nb_outputs + 1);
if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
exit(1);
fg->outputs[fg->nb_outputs - 1]->graph = fg;
fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
cur = cur->next;
fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
}
}
return 0;
}
int configure_filtergraph(FilterGraph *fg)
{
AVFilterInOut *inputs, *outputs, *cur;
int ret, i, simple = !fg->graph_desc;
const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
fg->graph_desc;
avfilter_graph_free(&fg->graph);
if (!(fg->graph = avfilter_graph_alloc()))
return AVERROR(ENOMEM);
if (simple) {
OutputStream *ost = fg->outputs[0]->ost;
char args[512];
AVDictionaryEntry *e = NULL;
snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
fg->graph->scale_sws_opts = av_strdup(args);
args[0] = '\0';
while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
AV_DICT_IGNORE_SUFFIX))) {
av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
}
if (strlen(args))
args[strlen(args) - 1] = '\0';
fg->graph->resample_lavr_opts = av_strdup(args);
}
if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
return ret;
if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
"exactly one input and output.\n", graph_desc);
return AVERROR(EINVAL);
}
for (cur = inputs, i = 0; cur; cur = cur->next, i++)
if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
return ret;
avfilter_inout_free(&inputs);
for (cur = outputs, i = 0; cur; cur = cur->next, i++)
configure_output_filter(fg, fg->outputs[i], cur);
avfilter_inout_free(&outputs);
if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
return ret;
return 0;
}
int configure_filter(struct liveStream *ctx)
{
int ret = 0;
int i = 0;
/** Input Id */
long in_id;
AVFilterInOut *outputs;
AVFilterInOut *inputs;
AVFilterInOut *cur;
take_filter_lock(&ctx->filter_lock);
avfilter_graph_free(&ctx->filter_graph);
ctx->filter_graph = avfilter_graph_alloc();
if (NULL == ctx->filter_graph)
{
av_log(NULL,AV_LOG_ERROR,"Unable to allocate Filter\n");
return -1;
}
ret = avfilter_graph_parse2(ctx->filter_graph, ctx->graph_desc.str, &inputs, &outputs);
if(ret < 0)
return ret;
for (i = 0,cur = inputs; cur; cur = cur->next,i++)
{
in_id = strtol(cur->name,NULL,0);
if(in_id < 0 || in_id >= ctx->nb_input)
{
/** Invalid index of video provided */
ret = -1;
break;
}
configure_input_filter(ctx, in_id, cur);
}
avfilter_inout_free(&inputs);
ret = configure_output_filter(ctx,outputs);
if(ret < 0)
{
printf("unable to configure output filter\n");
return ret;
}
avfilter_inout_free(&outputs);
if ((ret = avfilter_graph_config(ctx->filter_graph, NULL)) < 0)
return ret;
give_filter_lock(&ctx->filter_lock);
return 0;
}
int init_complex_filtergraph(FilterGraph *fg)
{
AVFilterInOut *inputs, *outputs, *cur;
AVFilterGraph *graph;
int ret = 0;
/* this graph is only used for determining the kinds of inputs
* and outputs we have, and is discarded on exit from this function */
graph = avfilter_graph_alloc();
if(!graph)
{
return AVERROR(ENOMEM);
}
ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
if(ret < 0)
{
goto fail;
}
for(cur = inputs; cur; cur = cur->next)
{
init_input_filter(fg, cur);
}
for(cur = outputs; cur;)
{
GROW_ARRAY(fg->outputs, fg->nb_outputs);
fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]));
if(!fg->outputs[fg->nb_outputs - 1])
{
exit_program(1);
}
fg->outputs[fg->nb_outputs - 1]->graph = fg;
fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
fg->outputs[fg->nb_outputs - 1]->type = avfilter_pad_get_type(cur->filter_ctx->output_pads,
cur->pad_idx);
cur = cur->next;
fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
}
fail:
avfilter_inout_free(&inputs);
avfilter_graph_free(&graph);
return ret;
}
bool MovieDecoder::initFilterGraph(enum AVPixelFormat pixfmt, int width, int height)
{
AVFilterInOut *inputs = nullptr, *outputs = nullptr;
deleteFilterGraph();
m_filterGraph = avfilter_graph_alloc();
QByteArray arguments("buffer=");
arguments += "video_size=" + QByteArray::number(width) + "x" + QByteArray::number(height) + ":";
arguments += "pix_fmt=" + QByteArray::number(pixfmt) + ":";
arguments += "time_base=1/1:pixel_aspect=0/1[in];";
arguments += "[in]yadif[out];";
arguments += "[out]buffersink";
int ret = avfilter_graph_parse2(m_filterGraph, arguments.constData(), &inputs, &outputs);
if (ret < 0) {
qWarning() << "Unable to parse filter graph";
return false;
}
if(inputs || outputs)
return -1;
ret = avfilter_graph_config(m_filterGraph, nullptr);
if (ret < 0) {
qWarning() << "Unable to validate filter graph";
return false;
}
m_bufferSourceContext = avfilter_graph_get_filter(m_filterGraph, "Parsed_buffer_0");
m_bufferSinkContext = avfilter_graph_get_filter(m_filterGraph, "Parsed_buffersink_2");
if (!m_bufferSourceContext || !m_bufferSinkContext) {
qWarning() << "Unable to get source or sink";
return false;
}
m_filterFrame = av_frame_alloc();
m_lastWidth = width;
m_lastHeight = height;
m_lastPixfmt = pixfmt;
return true;
}
int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
AVFilterInOut *open_inputs,
AVFilterInOut *open_outputs, void *log_ctx)
{
int ret;
AVFilterInOut *cur, *match, *inputs = NULL, *outputs = NULL;
if ((ret = avfilter_graph_parse2(graph, filters, &inputs, &outputs)) < 0)
goto fail;
/* First input can be omitted if it is "[in]" */
if (inputs && !inputs->name)
inputs->name = av_strdup("in");
for (cur = inputs; cur; cur = cur->next) {
if (!cur->name) {
av_log(log_ctx, AV_LOG_ERROR,
"Not enough inputs specified for the \"%s\" filter.\n",
cur->filter_ctx->filter->name);
ret = AVERROR(EINVAL);
goto fail;
}
if (!(match = extract_inout(cur->name, &open_outputs)))
continue;
ret = avfilter_link(match->filter_ctx, match->pad_idx,
cur->filter_ctx, cur->pad_idx);
avfilter_inout_free(&match);
if (ret < 0)
goto fail;
}
/* Last output can be omitted if it is "[out]" */
if (outputs && !outputs->name)
outputs->name = av_strdup("out");
for (cur = outputs; cur; cur = cur->next) {
if (!cur->name) {
av_log(log_ctx, AV_LOG_ERROR,
"Invalid filterchain containing an unlabelled output pad: \"%s\"\n",
filters);
ret = AVERROR(EINVAL);
goto fail;
}
if (!(match = extract_inout(cur->name, &open_inputs)))
continue;
ret = avfilter_link(cur->filter_ctx, cur->pad_idx,
match->filter_ctx, match->pad_idx);
avfilter_inout_free(&match);
if (ret < 0)
goto fail;
}
fail:
if (ret < 0) {
while (graph->nb_filters)
avfilter_free(graph->filters[0]);
av_freep(&graph->filters);
}
avfilter_inout_free(&inputs);
avfilter_inout_free(&outputs);
avfilter_inout_free(&open_inputs);
avfilter_inout_free(&open_outputs);
return ret;
#else
int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
AVFilterInOut **inputs, AVFilterInOut **outputs,
void *log_ctx)
{
return avfilter_graph_parse_ptr(graph, filters, inputs, outputs, log_ctx);
#endif
}
int avfilter_graph_parse_ptr(AVFilterGraph *graph, const char *filters,
AVFilterInOut **open_inputs_ptr, AVFilterInOut **open_outputs_ptr,
void *log_ctx)
{
int index = 0, ret = 0;
char chr = 0;
AVFilterInOut *curr_inputs = NULL;
AVFilterInOut *open_inputs = open_inputs_ptr ? *open_inputs_ptr : NULL;
AVFilterInOut *open_outputs = open_outputs_ptr ? *open_outputs_ptr : NULL;
if ((ret = parse_sws_flags(&filters, graph)) < 0)
goto end;
do {
AVFilterContext *filter;
const char *filterchain = filters;
filters += strspn(filters, WHITESPACES);
if ((ret = parse_inputs(&filters, &curr_inputs, &open_outputs, log_ctx)) < 0)
goto end;
if ((ret = parse_filter(&filter, &filters, graph, index, log_ctx)) < 0)
goto end;
if (filter->nb_inputs == 1 && !curr_inputs && !index) {
/* First input pad, assume it is "[in]" if not specified */
const char *tmp = "[in]";
if ((ret = parse_inputs(&tmp, &curr_inputs, &open_outputs, log_ctx)) < 0)
goto end;
}
if ((ret = link_filter_inouts(filter, &curr_inputs, &open_inputs, log_ctx)) < 0)
goto end;
if ((ret = parse_outputs(&filters, &curr_inputs, &open_inputs, &open_outputs,
log_ctx)) < 0)
goto end;
filters += strspn(filters, WHITESPACES);
chr = *filters++;
if (chr == ';' && curr_inputs) {
av_log(log_ctx, AV_LOG_ERROR,
"Invalid filterchain containing an unlabelled output pad: \"%s\"\n",
filterchain);
ret = AVERROR(EINVAL);
goto end;
}
index++;
} while (chr == ',' || chr == ';');
if (chr) {
av_log(log_ctx, AV_LOG_ERROR,
"Unable to parse graph description substring: \"%s\"\n",
filters - 1);
ret = AVERROR(EINVAL);
goto end;
}
if (curr_inputs) {
/* Last output pad, assume it is "[out]" if not specified */
const char *tmp = "[out]";
if ((ret = parse_outputs(&tmp, &curr_inputs, &open_inputs, &open_outputs,
log_ctx)) < 0)
goto end;
}
end:
/* clear open_in/outputs only if not passed as parameters */
if (open_inputs_ptr) *open_inputs_ptr = open_inputs;
else avfilter_inout_free(&open_inputs);
if (open_outputs_ptr) *open_outputs_ptr = open_outputs;
else avfilter_inout_free(&open_outputs);
avfilter_inout_free(&curr_inputs);
if (ret < 0) {
while (graph->nb_filters)
avfilter_free(graph->filters[0]);
av_freep(&graph->filters);
}
return ret;
}
int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
AVFilterInOut *open_inputs,
AVFilterInOut *open_outputs, void *log_ctx)
{
int ret;
AVFilterInOut *cur, *match, *inputs = NULL, *outputs = NULL;
if ((ret = avfilter_graph_parse2(graph, filters, &inputs, &outputs)) < 0)
goto fail;
/* First input can be omitted if it is "[in]" */
if (inputs && !inputs->name)
inputs->name = av_strdup("in");
for (cur = inputs; cur; cur = cur->next) {
if (!cur->name) {
av_log(log_ctx, AV_LOG_ERROR,
"Not enough inputs specified for the \"%s\" filter.\n",
cur->filter_ctx->filter->name);
ret = AVERROR(EINVAL);
goto fail;
}
if (!(match = extract_inout(cur->name, &open_outputs)))
continue;
ret = avfilter_link(match->filter_ctx, match->pad_idx,
cur->filter_ctx, cur->pad_idx);
avfilter_inout_free(&match);
if (ret < 0)
goto fail;
}
/* Last output can be omitted if it is "[out]" */
if (outputs && !outputs->name)
outputs->name = av_strdup("out");
for (cur = outputs; cur; cur = cur->next) {
if (!cur->name) {
av_log(log_ctx, AV_LOG_ERROR,
"Invalid filterchain containing an unlabelled output pad: \"%s\"\n",
filters);
ret = AVERROR(EINVAL);
goto fail;
}
if (!(match = extract_inout(cur->name, &open_inputs)))
continue;
ret = avfilter_link(cur->filter_ctx, cur->pad_idx,
match->filter_ctx, match->pad_idx);
avfilter_inout_free(&match);
if (ret < 0)
goto fail;
}
fail:
if (ret < 0) {
for (; graph->filter_count > 0; graph->filter_count--)
avfilter_free(graph->filters[graph->filter_count - 1]);
av_freep(&graph->filters);
}
avfilter_inout_free(&inputs);
avfilter_inout_free(&outputs);
avfilter_inout_free(&open_inputs);
avfilter_inout_free(&open_outputs);
return ret;
}
// Parse the user-provided filter graph, and populate the unlinked filter pads.
static void precreate_graph(struct lavfi *c, bool first_init)
{
assert(!c->graph);
c->failed = false;
c->graph = avfilter_graph_alloc();
if (!c->graph)
abort();
if (mp_set_avopts(c->log, c->graph, c->graph_opts) < 0)
goto error;
if (c->direct_filter) {
AVFilterContext *filter = avfilter_graph_alloc_filter(c->graph,
avfilter_get_by_name(c->graph_string), "filter");
if (!filter) {
MP_FATAL(c, "filter '%s' not found or failed to allocate\n",
c->graph_string);
goto error;
}
if (mp_set_avopts_pos(c->log, filter, filter->priv,
c->direct_filter_opts) < 0)
goto error;
if (avfilter_init_str(filter, NULL) < 0) {
MP_FATAL(c, "filter failed to initialize\n");
goto error;
}
add_pads_direct(c, MP_PIN_IN, filter, filter->input_pads,
filter->nb_inputs, first_init);
add_pads_direct(c, MP_PIN_OUT, filter, filter->output_pads,
filter->nb_outputs, first_init);
} else {
AVFilterInOut *in = NULL, *out = NULL;
if (avfilter_graph_parse2(c->graph, c->graph_string, &in, &out) < 0) {
MP_FATAL(c, "parsing the filter graph failed\n");
goto error;
}
add_pads(c, MP_PIN_IN, in, first_init);
add_pads(c, MP_PIN_OUT, out, first_init);
avfilter_inout_free(&in);
avfilter_inout_free(&out);
}
for (int n = 0; n < c->num_all_pads; n++)
c->failed |= !c->all_pads[n]->filter;
if (c->failed)
goto error;
return;
error:
free_graph(c);
c->failed = true;
mp_filter_internal_mark_failed(c->f);
return;
}
int configure_filtergraph(FilterGraph *fg)
{
AVFilterInOut *inputs, *outputs, *cur;
int ret, i, simple = !fg->graph_desc;
const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
fg->graph_desc;
avfilter_graph_free(&fg->graph);
if (!(fg->graph = avfilter_graph_alloc()))
return AVERROR(ENOMEM);
if (simple) {
OutputStream *ost = fg->outputs[0]->ost;
char args[512];
AVDictionaryEntry *e = NULL;
args[0] = 0;
while ((e = av_dict_get(ost->sws_dict, "", e,
AV_DICT_IGNORE_SUFFIX))) {
av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
}
if (strlen(args))
args[strlen(args)-1] = 0;
fg->graph->scale_sws_opts = av_strdup(args);
args[0] = 0;
while ((e = av_dict_get(ost->swr_opts, "", e,
AV_DICT_IGNORE_SUFFIX))) {
av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
}
if (strlen(args))
args[strlen(args)-1] = 0;
av_opt_set(fg->graph, "aresample_swr_opts", args, 0);
args[0] = '\0';
while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
AV_DICT_IGNORE_SUFFIX))) {
av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
}
if (strlen(args))
args[strlen(args) - 1] = '\0';
fg->graph->resample_lavr_opts = av_strdup(args);
e = av_dict_get(ost->encoder_opts, "threads", NULL, 0);
if (e)
av_opt_set(fg->graph, "threads", e->value, 0);
}
if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
return ret;
if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
const char *num_inputs;
const char *num_outputs;
if (!outputs) {
num_outputs = "0";
} else if (outputs->next) {
num_outputs = ">1";
} else {
num_outputs = "1";
}
if (!inputs) {
num_inputs = "0";
} else if (inputs->next) {
num_inputs = ">1";
} else {
num_inputs = "1";
}
av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' was expected "
"to have exactly 1 input and 1 output."
" However, it had %s input(s) and %s output(s)."
" Please adjust, or use a complex filtergraph (-filter_complex) instead.\n",
graph_desc, num_inputs, num_outputs);
return AVERROR(EINVAL);
}
for (cur = inputs, i = 0; cur; cur = cur->next, i++)
if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0) {
avfilter_inout_free(&inputs);
avfilter_inout_free(&outputs);
return ret;
}
avfilter_inout_free(&inputs);
for (cur = outputs, i = 0; cur; cur = cur->next, i++)
configure_output_filter(fg, fg->outputs[i], cur);
avfilter_inout_free(&outputs);
if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
return ret;
fg->reconfiguration = 1;
for (i = 0; i < fg->nb_outputs; i++) {
OutputStream *ost = fg->outputs[i]->ost;
if (!ost->enc) {
/* identical to the same check in ffmpeg.c, needed because
complex filter graphs are initialized earlier */
av_log(NULL, AV_LOG_ERROR, "Encoder (codec %s) not found for output stream #%d:%d\n",
avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
return AVERROR(EINVAL);
}
if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
!(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
av_buffersink_set_frame_size(ost->filter->filter,
ost->enc_ctx->frame_size);
}
return 0;
}
