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;
av_assert0(!link->frame_requested);
link->frame_requested = 1;
while (link->frame_requested) {
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 < 0) {
link->frame_requested = 0;
if (ret == AVERROR_EOF)
link->closed = 1;
} else {
av_assert0(!link->frame_requested ||
link->flags & FF_LINK_FLAG_REQUEST_LOOP);
}
}
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") &&
strcmp(link->dst->filter->name, "idet")) {
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);
}
}
int ff_request_frame(AVFilterLink *link)
{
FF_TPRINTF_START(NULL, request_frame); ff_tlog_link(NULL, link, 1);
if (link->srcpad->request_frame)
return link->srcpad->request_frame(link);
else if (link->src->inputs[0])
return ff_request_frame(link->src->inputs[0]);
else return -1;
}
int ff_filter_samples_framed(AVFilterLink *link, AVFilterBufferRef *samplesref)
{
int (*filter_samples)(AVFilterLink *, AVFilterBufferRef *);
AVFilterPad *src = link->srcpad;
AVFilterPad *dst = link->dstpad;
int64_t pts;
AVFilterBufferRef *buf_out;
int ret;
FF_TPRINTF_START(NULL, filter_samples); ff_tlog_link(NULL, link, 1);
if (link->closed) {
avfilter_unref_buffer(samplesref);
return AVERROR_EOF;
}
if (!(filter_samples = dst->filter_samples))
filter_samples = default_filter_samples;
av_assert1((samplesref->perms & src->min_perms) == src->min_perms);
samplesref->perms &= ~ src->rej_perms;
/* prepare to copy the samples if the buffer has insufficient permissions */
if ((dst->min_perms & samplesref->perms) != dst->min_perms ||
dst->rej_perms & samplesref->perms) {
av_log(link->dst, AV_LOG_DEBUG,
"Copying audio data in avfilter (have perms %x, need %x, reject %x)\n",
samplesref->perms, link->dstpad->min_perms, link->dstpad->rej_perms);
buf_out = ff_default_get_audio_buffer(link, dst->min_perms,
samplesref->audio->nb_samples);
if (!buf_out) {
avfilter_unref_buffer(samplesref);
return AVERROR(ENOMEM);
}
buf_out->pts = samplesref->pts;
buf_out->audio->sample_rate = samplesref->audio->sample_rate;
/* Copy actual data into new samples buffer */
av_samples_copy(buf_out->extended_data, samplesref->extended_data,
0, 0, samplesref->audio->nb_samples,
av_get_channel_layout_nb_channels(link->channel_layout),
link->format);
avfilter_unref_buffer(samplesref);
} else
buf_out = samplesref;
link->cur_buf = buf_out;
pts = buf_out->pts;
ret = filter_samples(link, buf_out);
ff_update_link_current_pts(link, pts);
return ret;
}
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
{
int ret;
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, "buffersink") &&
strcmp(link->dst->filter->name, "format") &&
strcmp(link->dst->filter->name, "idet") &&
strcmp(link->dst->filter->name, "null") &&
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 {
if (frame->format != link->format) {
av_log(link->dst, AV_LOG_ERROR, "Format change is not supported\n");
goto error;
}
if (av_frame_get_channels(frame) != link->channels) {
av_log(link->dst, AV_LOG_ERROR, "Channel count change is not supported\n");
goto error;
}
if (frame->channel_layout != link->channel_layout) {
av_log(link->dst, AV_LOG_ERROR, "Channel layout change is not supported\n");
goto error;
}
if (frame->sample_rate != link->sample_rate) {
av_log(link->dst, AV_LOG_ERROR, "Sample rate change is not supported\n");
goto error;
}
}
link->frame_blocked_in = link->frame_wanted_out = 0;
link->frame_count_in++;
filter_unblock(link->dst);
ret = ff_framequeue_add(&link->fifo, frame);
if (ret < 0) {
av_frame_free(&frame);
return ret;
}
ff_filter_set_ready(link->dst, 300);
return 0;
error:
av_frame_free(&frame);
return AVERROR_PATCHWELCOME;
}
AVFrame *ff_get_video_buffer(AVFilterLink *link, int w, int h)
{
AVFrame *ret = NULL;
FF_TPRINTF_START(NULL, get_video_buffer); ff_tlog_link(NULL, link, 0);
if (link->dstpad->get_video_buffer)
ret = link->dstpad->get_video_buffer(link, w, h);
if (!ret)
ret = ff_default_get_video_buffer(link, w, h);
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, "buffersink") &&
strcmp(link->dst->filter->name, "format") &&
strcmp(link->dst->filter->name, "idet") &&
strcmp(link->dst->filter->name, "null") &&
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 {
if (frame->format != link->format) {
av_log(link->dst, AV_LOG_ERROR, "Format change is not supported\n");
goto error;
}
if (av_frame_get_channels(frame) != link->channels) {
av_log(link->dst, AV_LOG_ERROR, "Channel count change is not supported\n");
goto error;
}
if (frame->channel_layout != link->channel_layout) {
av_log(link->dst, AV_LOG_ERROR, "Channel layout change is not supported\n");
goto error;
}
if (frame->sample_rate != link->sample_rate) {
av_log(link->dst, AV_LOG_ERROR, "Sample rate change is not supported\n");
goto error;
}
}
/* 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);
}
error:
av_frame_free(&frame);
return AVERROR_PATCHWELCOME;
}
void ff_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref)
{
void (*filter_samples)(AVFilterLink *, AVFilterBufferRef *);
AVFilterPad *dst = link->dstpad;
int64_t pts;
FF_TPRINTF_START(NULL, filter_samples); ff_tlog_link(NULL, link, 1);
if (!(filter_samples = dst->filter_samples))
filter_samples = ff_default_filter_samples;
/* prepare to copy the samples if the buffer has insufficient permissions */
if ((dst->min_perms & samplesref->perms) != dst->min_perms ||
dst->rej_perms & samplesref->perms) {
int i, size, planar = av_sample_fmt_is_planar(samplesref->format);
int planes = !planar ? 1:
av_get_channel_layout_nb_channels(samplesref->audio->channel_layout);
av_log(link->dst, AV_LOG_DEBUG,
"Copying audio data in avfilter (have perms %x, need %x, reject %x)\n",
samplesref->perms, link->dstpad->min_perms, link->dstpad->rej_perms);
link->cur_buf = ff_default_get_audio_buffer(link, dst->min_perms,
samplesref->audio->nb_samples);
link->cur_buf->pts = samplesref->pts;
link->cur_buf->audio->sample_rate = samplesref->audio->sample_rate;
/* Copy actual data into new samples buffer */
/* src can be larger than dst if it was allocated larger than necessary.
dst can be slightly larger due to extra alignment padding. */
size = FFMIN(samplesref->linesize[0], link->cur_buf->linesize[0]);
for (i = 0; samplesref->data[i] && i < 8; i++)
memcpy(link->cur_buf->data[i], samplesref->data[i], size);
for (i = 0; i < planes; i++)
memcpy(link->cur_buf->extended_data[i], samplesref->extended_data[i], size);
avfilter_unref_buffer(samplesref);
} else
link->cur_buf = samplesref;
pts = link->cur_buf->pts;
filter_samples(link, link->cur_buf);
ff_update_link_current_pts(link, pts);
}
int ff_request_frame_to_filter(AVFilterLink *link)
{
int ret = -1;
FF_TPRINTF_START(NULL, request_frame_to_filter); ff_tlog_link(NULL, link, 1);
/* Assume the filter is blocked, let the method clear it if not */
link->frame_blocked_in = 1;
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 < 0) {
if (ret != AVERROR(EAGAIN) && ret != link->status_in)
ff_avfilter_link_set_in_status(link, ret, AV_NOPTS_VALUE);
if (ret == AVERROR_EOF)
ret = 0;
}
return ret;
}
int ff_filter_frame(AVFilterLink *link, AVFilterBufferRef *frame)
{
int ret;
FF_TPRINTF_START(NULL, filter_frame); ff_tlog_link(NULL, link, 1); ff_tlog(NULL, " "); ff_tlog_ref(NULL, frame, 1);
switch (link->type) {
case AVMEDIA_TYPE_VIDEO:
if((ret = ff_start_frame(link, frame)) < 0)
return ret;
if((ret = ff_draw_slice(link, 0, frame->video->h, 1)) < 0)
return ret;
if((ret = ff_end_frame(link)) < 0)
return ret;
return ret;
case AVMEDIA_TYPE_AUDIO:
return ff_filter_samples(link, frame);
default: return AVERROR(EINVAL);
}
}
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) {
AVFilterBufferRef *pbuf = link->partial_buf;
link->partial_buf = NULL;
ff_filter_samples_framed(link, pbuf);
return 0;
}
if (ret == AVERROR_EOF)
link->closed = 1;
return ret;
}
int ff_request_frame(AVFilterLink *link)
{
FF_TPRINTF_START(NULL, request_frame); ff_tlog_link(NULL, link, 1);
if (link->status_out)
return link->status_out;
if (link->status_in) {
if (ff_framequeue_queued_frames(&link->fifo)) {
av_assert1(!link->frame_wanted_out);
av_assert1(link->dst->ready >= 300);
return 0;
} else {
/* Acknowledge status change. Filters using ff_request_frame() will
handle the change automatically. Filters can also check the
status directly but none do yet. */
ff_avfilter_link_set_out_status(link, link->status_in, link->status_in_pts);
return link->status_out;
}
}
link->frame_wanted_out = 1;
ff_filter_set_ready(link->src, 100);
return 0;
}