diff options
Diffstat (limited to 'libavfilter/avcodec.c')
| -rw-r--r-- | libavfilter/avcodec.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/libavfilter/avcodec.c b/libavfilter/avcodec.c new file mode 100644 index 0000000..313080d --- /dev/null +++ b/libavfilter/avcodec.c @@ -0,0 +1,177 @@ +/* + * 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/opt.h" + +int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src) +{ + dst->pts = src->pts; + dst->pos = av_frame_get_pkt_pos(src); + dst->format = src->format; + + switch (dst->type) { + case AVMEDIA_TYPE_VIDEO: + dst->video->w = src->width; + dst->video->h = src->height; + dst->video->sample_aspect_ratio = src->sample_aspect_ratio; + dst->video->interlaced = src->interlaced_frame; + dst->video->top_field_first = src->top_field_first; + dst->video->key_frame = src->key_frame; + dst->video->pict_type = src->pict_type; + av_freep(&dst->video->qp_table); + dst->video->qp_table_linesize = 0; + if (src->qscale_table) { + int qsize = src->qstride ? src->qstride * ((src->height+15)/16) : (src->width+15)/16; + dst->video->qp_table = av_malloc(qsize); + if (!dst->video->qp_table) + return AVERROR(ENOMEM); + dst->video->qp_table_linesize = src->qstride; + dst->video->qp_table_size = qsize; + memcpy(dst->video->qp_table, src->qscale_table, qsize); + } + break; + case AVMEDIA_TYPE_AUDIO: + dst->audio->sample_rate = src->sample_rate; + dst->audio->channel_layout = src->channel_layout; + break; + default: + return AVERROR(EINVAL); + } + + return 0; +} + +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; + avfilter_copy_frame_props(picref, frame); + return picref; +} + +AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame, + int perms) +{ + AVFilterBufferRef *samplesref = + avfilter_get_audio_buffer_ref_from_arrays((uint8_t **)frame->data, frame->linesize[0], perms, + frame->nb_samples, frame->format, + av_frame_get_channel_layout(frame)); + if (!samplesref) + return NULL; + avfilter_copy_frame_props(samplesref, frame); + 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(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); + break; + default: + return AVERROR(EINVAL); + } + + return 0; +} + +#ifdef FF_API_FILL_FRAME +int avfilter_fill_frame_from_audio_buffer_ref(AVFrame *frame, + const AVFilterBufferRef *samplesref) +{ + return avfilter_copy_buf_props(frame, samplesref); +} + +int avfilter_fill_frame_from_video_buffer_ref(AVFrame *frame, + const AVFilterBufferRef *picref) +{ + return avfilter_copy_buf_props(frame, picref); +} + +int avfilter_fill_frame_from_buffer_ref(AVFrame *frame, + const AVFilterBufferRef *ref) +{ + return avfilter_copy_buf_props(frame, ref); +} +#endif |
