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Use WEBP to encode thumbnails

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simon987
2023-05-20 13:12:12 -04:00
parent e2e0cf260f
commit 610882112d
10 changed files with 73 additions and 46 deletions
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19
third-party/libscan/libscan/ebook/ebook.c vendored
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@@ -153,22 +153,23 @@ int render_cover(scan_ebook_ctx_t *ctx, fz_context *fzctx, document_t *doc, fz_d
sws_freeContext(sws_ctx);
// YUV420p -> JPEG
AVCodecContext *jpeg_encoder = alloc_jpeg_encoder(pixmap->w, pixmap->h, ctx->tn_qscale);
avcodec_send_frame(jpeg_encoder, scaled_frame);
// YUV420p -> JPEG/WEBP
AVCodecContext *thumbnail_encoder = alloc_webp_encoder(pixmap->w, pixmap->h, ctx->tn_qscale);
avcodec_send_frame(thumbnail_encoder, scaled_frame);
avcodec_send_frame(thumbnail_encoder, NULL); // Send EOF
AVPacket jpeg_packet;
av_init_packet(&jpeg_packet);
avcodec_receive_packet(jpeg_encoder, &jpeg_packet);
AVPacket thumbnail_packet;
av_init_packet(&thumbnail_packet);
avcodec_receive_packet(thumbnail_encoder, &thumbnail_packet);
APPEND_LONG_META(doc, MetaThumbnail, 1);
ctx->store(doc->doc_id, 0, (char *) jpeg_packet.data, jpeg_packet.size);
ctx->store(doc->doc_id, 0, (char *) thumbnail_packet.data, thumbnail_packet.size);
free(samples);
av_packet_unref(&jpeg_packet);
av_packet_unref(&thumbnail_packet);
av_free(*scaled_frame->data);
av_frame_free(&scaled_frame);
avcodec_free_context(&jpeg_encoder);
avcodec_free_context(&thumbnail_encoder);
fz_drop_pixmap(fzctx, pixmap);
fz_drop_page(fzctx, cover);