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mirror of https://github.com/mpv-player/mpv.git synced 2024-09-20 12:02:23 +02:00
mpv/video/image_loader.c
wm4 2c43d2b75a screenshot, vo_image: use global swscale/zimg parameters
Lots of dumb crap to do... something. Instead of adding yet another dumb
helper, just use the main" sws_utils API in both callers. (Which,
unfortunately, has been duplicated for glorious webp screenshots,
despite the fact that webp is crap.)

Good part: can enable zimg for screenshots (as far as needed).
Bad part: uses "default" swscale parameters instead of HQ now.
2019-10-31 15:44:09 +01:00

49 lines
1.2 KiB
C

#include <libavcodec/avcodec.h>
#include "common/common.h"
#include "mp_image.h"
#include "player/screenshot.h"
#include "image_loader.h"
struct mp_image *load_image_png_buf(void *buffer, size_t buffer_size, int imgfmt)
{
const AVCodec *codec = avcodec_find_decoder(AV_CODEC_ID_PNG);
if (!codec)
return NULL;
AVCodecContext *avctx = avcodec_alloc_context3(codec);
if (!avctx)
return NULL;
if (avcodec_open2(avctx, codec, NULL) < 0) {
avcodec_free_context(&avctx);
return NULL;
}
AVPacket *pkt = av_packet_alloc();
if (pkt) {
if (av_new_packet(pkt, buffer_size) >= 0)
memcpy(pkt->data, buffer, buffer_size);
}
// (There is only 1 outcome: either it takes it and decodes it, or not.)
avcodec_send_packet(avctx, pkt);
avcodec_send_packet(avctx, NULL);
av_packet_free(&pkt);
struct mp_image *res = NULL;
AVFrame *frame = av_frame_alloc();
if (frame && avcodec_receive_frame(avctx, frame) >= 0) {
struct mp_image *r = mp_image_from_av_frame(frame);
if (r)
res = convert_image(r, imgfmt, NULL, mp_null_log);
talloc_free(r);
}
av_frame_free(&frame);
avcodec_free_context(&avctx);
return res;
}