mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-11-24 20:19:55 +00:00
96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
/*
|
|
* Copyright 2012 Stefano Sabatini <stefasab 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
|
|
*/
|
|
|
|
#include "libavutil/imgutils.h"
|
|
#include "lavfutils.h"
|
|
|
|
int ff_load_image(uint8_t *data[4], int linesize[4],
|
|
int *w, int *h, enum AVPixelFormat *pix_fmt,
|
|
const char *filename, void *log_ctx)
|
|
{
|
|
AVInputFormat *iformat = NULL;
|
|
AVFormatContext *format_ctx = NULL;
|
|
AVCodec *codec;
|
|
AVCodecContext *codec_ctx;
|
|
AVFrame *frame;
|
|
int frame_decoded, ret = 0;
|
|
AVPacket pkt;
|
|
|
|
av_register_all();
|
|
|
|
iformat = av_find_input_format("image2");
|
|
if ((ret = avformat_open_input(&format_ctx, filename, iformat, NULL)) < 0) {
|
|
av_log(log_ctx, AV_LOG_ERROR,
|
|
"Failed to open input file '%s'\n", filename);
|
|
return ret;
|
|
}
|
|
|
|
codec_ctx = format_ctx->streams[0]->codec;
|
|
codec = avcodec_find_decoder(codec_ctx->codec_id);
|
|
if (!codec) {
|
|
av_log(log_ctx, AV_LOG_ERROR, "Failed to find codec\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto end;
|
|
}
|
|
|
|
if ((ret = avcodec_open2(codec_ctx, codec, NULL)) < 0) {
|
|
av_log(log_ctx, AV_LOG_ERROR, "Failed to open codec\n");
|
|
goto end;
|
|
}
|
|
|
|
if (!(frame = avcodec_alloc_frame()) ) {
|
|
av_log(log_ctx, AV_LOG_ERROR, "Failed to alloc frame\n");
|
|
ret = AVERROR(ENOMEM);
|
|
goto end;
|
|
}
|
|
|
|
ret = av_read_frame(format_ctx, &pkt);
|
|
if (ret < 0) {
|
|
av_log(log_ctx, AV_LOG_ERROR, "Failed to read frame from file\n");
|
|
goto end;
|
|
}
|
|
|
|
ret = avcodec_decode_video2(codec_ctx, frame, &frame_decoded, &pkt);
|
|
if (ret < 0 || !frame_decoded) {
|
|
av_log(log_ctx, AV_LOG_ERROR, "Failed to decode image from file\n");
|
|
goto end;
|
|
}
|
|
ret = 0;
|
|
|
|
*w = frame->width;
|
|
*h = frame->height;
|
|
*pix_fmt = frame->format;
|
|
|
|
if ((ret = av_image_alloc(data, linesize, *w, *h, *pix_fmt, 16)) < 0)
|
|
goto end;
|
|
ret = 0;
|
|
|
|
av_image_copy(data, linesize, (const uint8_t **)frame->data, frame->linesize, *pix_fmt, *w, *h);
|
|
|
|
end:
|
|
avcodec_close(codec_ctx);
|
|
avformat_close_input(&format_ctx);
|
|
av_freep(&frame);
|
|
|
|
if (ret < 0)
|
|
av_log(log_ctx, AV_LOG_ERROR, "Error loading image file '%s'\n", filename);
|
|
return ret;
|
|
}
|