0,0 → 1,139 |
/* |
* Copyright 2011 Stefano Sabatini | stefasab at gmail.com |
* |
* 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 |
*/ |
|
/** |
* @file |
* libavcodec/libavfilter gluing utilities |
*/ |
|
#include "avcodec.h" |
#include "libavutil/avassert.h" |
#include "libavutil/channel_layout.h" |
#include "libavutil/opt.h" |
|
#if FF_API_AVFILTERBUFFER |
FF_DISABLE_DEPRECATION_WARNINGS |
AVFilterBufferRef *avfilter_get_video_buffer_ref_from_frame(const AVFrame *frame, |
int perms) |
{ |
AVFilterBufferRef *picref = |
avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize, perms, |
frame->width, frame->height, |
frame->format); |
if (!picref) |
return NULL; |
if (avfilter_copy_frame_props(picref, frame) < 0) { |
picref->buf->data[0] = NULL; |
avfilter_unref_bufferp(&picref); |
} |
return picref; |
} |
|
AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame, |
int perms) |
{ |
AVFilterBufferRef *samplesref; |
int channels = av_frame_get_channels(frame); |
int64_t layout = av_frame_get_channel_layout(frame); |
|
if (layout && av_get_channel_layout_nb_channels(layout) != av_frame_get_channels(frame)) { |
av_log(NULL, AV_LOG_ERROR, "Layout indicates a different number of channels than actually present\n"); |
return NULL; |
} |
|
samplesref = avfilter_get_audio_buffer_ref_from_arrays_channels( |
(uint8_t **)frame->extended_data, frame->linesize[0], perms, |
frame->nb_samples, frame->format, channels, layout); |
if (!samplesref) |
return NULL; |
if (avfilter_copy_frame_props(samplesref, frame) < 0) { |
samplesref->buf->data[0] = NULL; |
avfilter_unref_bufferp(&samplesref); |
} |
return samplesref; |
} |
|
AVFilterBufferRef *avfilter_get_buffer_ref_from_frame(enum AVMediaType type, |
const AVFrame *frame, |
int perms) |
{ |
switch (type) { |
case AVMEDIA_TYPE_VIDEO: |
return avfilter_get_video_buffer_ref_from_frame(frame, perms); |
case AVMEDIA_TYPE_AUDIO: |
return avfilter_get_audio_buffer_ref_from_frame(frame, perms); |
default: |
return NULL; |
} |
} |
|
int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src) |
{ |
int planes, nb_channels; |
|
if (!dst) |
return AVERROR(EINVAL); |
/* abort in case the src is NULL and dst is not, avoid inconsistent state in dst */ |
av_assert0(src); |
|
memcpy(dst->data, src->data, sizeof(dst->data)); |
memcpy(dst->linesize, src->linesize, sizeof(dst->linesize)); |
|
dst->pts = src->pts; |
dst->format = src->format; |
av_frame_set_pkt_pos(dst, src->pos); |
|
switch (src->type) { |
case AVMEDIA_TYPE_VIDEO: |
av_assert0(src->video); |
dst->width = src->video->w; |
dst->height = src->video->h; |
dst->sample_aspect_ratio = src->video->sample_aspect_ratio; |
dst->interlaced_frame = src->video->interlaced; |
dst->top_field_first = src->video->top_field_first; |
dst->key_frame = src->video->key_frame; |
dst->pict_type = src->video->pict_type; |
break; |
case AVMEDIA_TYPE_AUDIO: |
av_assert0(src->audio); |
nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout); |
planes = av_sample_fmt_is_planar(src->format) ? nb_channels : 1; |
|
if (planes > FF_ARRAY_ELEMS(dst->data)) { |
dst->extended_data = av_mallocz_array(planes, sizeof(*dst->extended_data)); |
if (!dst->extended_data) |
return AVERROR(ENOMEM); |
memcpy(dst->extended_data, src->extended_data, |
planes * sizeof(*dst->extended_data)); |
} else |
dst->extended_data = dst->data; |
dst->nb_samples = src->audio->nb_samples; |
av_frame_set_sample_rate (dst, src->audio->sample_rate); |
av_frame_set_channel_layout(dst, src->audio->channel_layout); |
av_frame_set_channels (dst, src->audio->channels); |
break; |
default: |
return AVERROR(EINVAL); |
} |
|
return 0; |
} |
FF_ENABLE_DEPRECATION_WARNINGS |
#endif |