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https://github.com/owntone/owntone-server.git
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Support for embedded artwork (items only)
This commit is contained in:
ejurgensen
parent
a1236f4400
commit
a6b586a0ce
208
src/artwork.c
208
src/artwork.c
@ -95,6 +95,56 @@ artwork_read(char *filename, struct evbuffer *evbuf)
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return -1;
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}
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static int
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rescale_needed(AVCodecContext *src, int max_w, int max_h, int *target_w, int *target_h)
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{
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int need_rescale;
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DPRINTF(E_DBG, L_ART, "Original image dimensions: w %d h %d\n", src->width, src->height);
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need_rescale = 1;
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if ((max_w <= 0) || (max_h <= 0)) /* No valid dimensions, use original */
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{
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need_rescale = 0;
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*target_w = src->width;
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*target_h = src->height;
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}
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else if ((src->width <= max_w) && (src->height <= max_h)) /* Smaller than target */
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{
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need_rescale = 0;
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*target_w = src->width;
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*target_h = src->height;
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}
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else if (src->width * max_h > src->height * max_w) /* Wider aspect ratio than target */
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{
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*target_w = max_w;
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*target_h = (double)max_w * ((double)src->height / (double)src->width);
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}
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else /* Taller or equal aspect ratio */
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{
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*target_w = (double)max_h * ((double)src->width / (double)src->height);
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*target_h = max_h;
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}
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DPRINTF(E_DBG, L_ART, "Raw destination width %d height %d\n", *target_w, *target_h);
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if ((*target_h > max_h) && (max_h > 0))
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*target_h = max_h;
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/* PNG prefers even row count */
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*target_w += *target_w % 2;
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if ((*target_w > max_w) && (max_w > 0))
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*target_w = max_w - (max_w % 2);
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DPRINTF(E_DBG, L_ART, "Destination width %d height %d\n", *target_w, *target_h);
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return need_rescale;
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}
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static int
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artwork_rescale(AVFormatContext *src_ctx, int s, int out_w, int out_h, int format, struct evbuffer *evbuf)
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{
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@ -520,15 +570,13 @@ static int
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artwork_get(char *filename, int max_w, int max_h, int format, struct evbuffer *evbuf)
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{
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AVFormatContext *src_ctx;
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AVCodecContext *src;
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int s;
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int target_w;
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int target_h;
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int need_rescale;
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int format_ok;
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int ret;
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DPRINTF(E_DBG, L_ART, "Artwork request parameters: max w = %d, max h = %d\n", max_w, max_h);
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DPRINTF(E_DBG, L_ART, "Artwork request for %s, max w = %d, max h = %d\n", filename, max_w, max_h);
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src_ctx = NULL;
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@ -588,52 +636,10 @@ artwork_get(char *filename, int max_w, int max_h, int format, struct evbuffer *e
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return -1;
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}
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src = src_ctx->streams[s]->codec;
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DPRINTF(E_DBG, L_ART, "Original image '%s': w %d h %d\n", filename, src->width, src->height);
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need_rescale = 1;
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if ((max_w <= 0) || (max_h <= 0)) /* No valid dimensions, use original */
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{
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need_rescale = 0;
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target_w = src->width;
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target_h = src->height;
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}
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else if ((src->width <= max_w) && (src->height <= max_h)) /* Smaller than target */
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{
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need_rescale = 0;
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target_w = src->width;
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target_h = src->height;
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}
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else if (src->width * max_h > src->height * max_w) /* Wider aspect ratio than target */
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{
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target_w = max_w;
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target_h = (double)max_w * ((double)src->height / (double)src->width);
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}
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else /* Taller or equal aspect ratio */
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{
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target_w = (double)max_h * ((double)src->width / (double)src->height);
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target_h = max_h;
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}
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DPRINTF(E_DBG, L_ART, "Raw destination width %d height %d\n", target_w, target_h);
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if ((target_h > max_h) && (max_h > 0))
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target_h = max_h;
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/* PNG prefers even row count */
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target_w += target_w % 2;
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if ((target_w > max_w) && (max_w > 0))
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target_w = max_w - (max_w % 2);
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DPRINTF(E_DBG, L_ART, "Destination width %d height %d\n", target_w, target_h);
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ret = rescale_needed(src_ctx->streams[s]->codec, max_w, max_h, &target_w, &target_h);
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/* Fastpath */
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if (!need_rescale && format_ok)
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if (!ret && format_ok)
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{
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ret = artwork_read(filename, evbuf);
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if (ret == 0)
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@ -657,6 +663,103 @@ artwork_get(char *filename, int max_w, int max_h, int format, struct evbuffer *e
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return ret;
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}
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static int
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artwork_get_embedded_image(char *filename, int max_w, int max_h, int format, struct evbuffer *evbuf)
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{
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AVFormatContext *src_ctx;
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AVStream *src_st;
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int s;
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int target_w;
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int target_h;
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int format_ok;
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int ret;
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DPRINTF(E_DBG, L_ART, "Artwork request for %s, max w = %d, max h = %d\n", filename, max_w, max_h);
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src_ctx = NULL;
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ret = avformat_open_input(&src_ctx, filename, NULL, NULL);
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if (ret < 0)
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{
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DPRINTF(E_WARN, L_ART, "Cannot open media file '%s': %s\n", filename, strerror(AVUNERROR(ret)));
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return -1;
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}
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ret = avformat_find_stream_info(src_ctx, NULL);
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if (ret < 0)
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{
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DPRINTF(E_WARN, L_ART, "Cannot get stream info: %s\n", strerror(AVUNERROR(ret)));
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avformat_close_input(&src_ctx);
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return -1;
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}
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format_ok = 0;
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for (s = 0; s < src_ctx->nb_streams; s++)
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{
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if (src_ctx->streams[s]->disposition & AV_DISPOSITION_ATTACHED_PIC)
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{
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if (src_ctx->streams[s]->codec->codec_id == CODEC_ID_PNG)
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{
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format_ok = (format & ART_CAN_PNG) ? ART_FMT_PNG : 0;
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break;
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}
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else if (src_ctx->streams[s]->codec->codec_id == CODEC_ID_MJPEG)
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{
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format_ok = (format & ART_CAN_JPEG) ? ART_FMT_JPEG : 0;
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break;
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}
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}
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}
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if (s == src_ctx->nb_streams)
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{
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DPRINTF(E_DBG, L_ART, "Did not find embedded artwork in '%s'\n", filename);
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avformat_close_input(&src_ctx);
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return -1;
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}
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src_st = src_ctx->streams[s];
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ret = rescale_needed(src_st->codec, max_w, max_h, &target_w, &target_h);
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/* Fastpath */
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if (!ret && format_ok)
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{
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DPRINTF(E_DBG, L_ART, "Artwork does not need rescale, sending original picture\n");
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ret = evbuffer_expand(evbuf, src_st->attached_pic.size);
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if (ret < 0)
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{
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DPRINTF(E_LOG, L_ART, "Out of memory for artwork\n");
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avformat_close_input(&src_ctx);
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return -1;
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}
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ret = evbuffer_add(evbuf, src_st->attached_pic.data, src_st->attached_pic.size);
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if (ret < 0)
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{
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DPRINTF(E_LOG, L_ART, "Could not add embedded image to event buffer\n");
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}
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else
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ret = format_ok;
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}
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else
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ret = artwork_rescale(src_ctx, s, target_w, target_h, format, evbuf);
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avformat_close_input(&src_ctx);
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if (ret < 0)
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{
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if (EVBUFFER_LENGTH(evbuf) > 0)
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evbuffer_drain(evbuf, EVBUFFER_LENGTH(evbuf));
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}
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return ret;
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}
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static int
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artwork_get_own_image(char *path, int max_w, int max_h, int format, struct evbuffer *evbuf)
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@ -836,7 +939,16 @@ artwork_get_item_filename(char *filename, int max_w, int max_h, int format, stru
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{
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int ret;
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/* FUTURE: look at embedded artwork */
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/* If item is an internet stream don't look for artwork */
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if (strncmp(filename, "http://", strlen("http://")) == 0)
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return -1;
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#if LIBAVFORMAT_VERSION_MAJOR >= 55 || (LIBAVFORMAT_VERSION_MAJOR == 54 && LIBAVFORMAT_VERSION_MINOR >= 20)
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/* Look for embedded artwork */
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ret = artwork_get_embedded_image(filename, max_w, max_h, format, evbuf);
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if (ret > 0)
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return ret;
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#endif
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/* Look for basename(filename).{png,jpg} */
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ret = artwork_get_own_image(filename, max_w, max_h, format, evbuf);
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