Merge remote-tracking branch 'qatar/master'

* qatar/master:
  libopenjpeg: introduce lowres and lowqual private options
  FATE: add a test for flac cover art.
  cafdec: allow larger ALAC magic cookie
  alac: fix channel pointer assignment for 24 and 32-bit

Conflicts:
	libavcodec/alac.c
	libavcodec/libopenjpegdec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/alac.c

@@ -328,16 +328,16 @@ static int decode_element(AVCodecContext *avctx, void *data, int ch_index,
             av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
             return ret;
         }
-        if (alac->direct_output) {
-            for (ch = 0; ch < channels; ch++)
-                alac->output_samples_buffer[ch] = (int32_t *)alac->frame.extended_data[ch_index + ch];
-        }
     } else if (output_samples != alac->nb_samples) {
         av_log(avctx, AV_LOG_ERROR, "sample count mismatch: %u != %d\n",
                output_samples, alac->nb_samples);
         return AVERROR_INVALIDDATA;
     }
     alac->nb_samples = output_samples;
+    if (alac->direct_output) {
+        for (ch = 0; ch < channels; ch++)
+            alac->output_samples_buffer[ch] = (int32_t *)alac->frame.extended_data[ch_index + ch];
+    }
 
     if (is_compressed) {
         int16_t lpc_coefs[2][32];

libavcodec/libopenjpegdec.c

@@ -24,6 +24,7 @@
 * JPEG 2000 decoder using libopenjpeg
 */
 
+#include "libavutil/opt.h"
 #include "libavutil/imgutils.h"
 #include "libavutil/pixfmt.h"
 #include "avcodec.h"
@@ -54,8 +55,10 @@ static const enum PixelFormat libopenjpeg_yuv_pix_fmts[]  = {YUV_PIXEL_FORMATS};
 static const enum PixelFormat libopenjpeg_all_pix_fmts[]  = {RGB_PIXEL_FORMATS,GRAY_PIXEL_FORMATS,YUV_PIXEL_FORMATS};
 
 typedef struct {
+    AVClass *class;
     opj_dparameters_t dec_params;
     AVFrame image;
+    int lowqual;
 } LibOpenJPEGContext;
 
 static inline int libopenjpeg_matches_pix_fmt(const opj_image_t *image, enum PixelFormat pix_fmt){
@@ -254,8 +257,9 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx,
         return -1;
     }
     opj_set_event_mgr((opj_common_ptr)dec, NULL, NULL);
-
     ctx->dec_params.cp_limit_decoding = LIMIT_TO_MAIN_HEADER;
+    ctx->dec_params.cp_reduce = avctx->lowres;
+    ctx->dec_params.cp_layer  = ctx->lowqual;
     // Tie decoder with decoding parameters
     opj_setup_decoder(dec, &ctx->dec_params);
     stream = opj_cio_open((opj_common_ptr)dec, buf, buf_size);
@@ -275,6 +279,7 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx,
     }
     width  = image->x1 - image->x0;
     height = image->y1 - image->y0;
+
     if(av_image_check_size(width, height, 0, avctx) < 0) {
         av_log(avctx, AV_LOG_ERROR, "%dx%d dimension invalid.\n", width, height);
         goto done;
@@ -380,6 +385,20 @@ static av_cold int libopenjpeg_decode_close(AVCodecContext *avctx)
     return 0 ;
 }
 
+#define OFFSET(x) offsetof(LibOpenJPEGContext, x)
+#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
+
+static const AVOption options[] = {
+    { "lowqual",       "Limit the number of layers used for decoding",         OFFSET(lowqual),        AV_OPT_TYPE_INT,   { 0 }, 0, INT_MAX, VD },
+    { NULL },
+};
+
+static const AVClass class = {
+    .class_name = "libopenjpeg",
+    .item_name  = av_default_item_name,
+    .option     = options,
+    .version    = LIBAVUTIL_VERSION_INT,
+};
 
 AVCodec ff_libopenjpeg_decoder = {
     .name             = "libopenjpeg",
@@ -392,5 +411,6 @@ AVCodec ff_libopenjpeg_decoder = {
     .capabilities     = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
     .max_lowres       = 5,
     .long_name        = NULL_IF_CONFIG_SMALL("OpenJPEG JPEG 2000"),
+    .priv_class       = &class,
     .init_thread_copy = ONLY_IF_THREADS_ENABLED(libopenjpeg_decode_init_thread_copy),
 };

libavformat/cafdec.c

@@ -124,7 +124,7 @@ static int read_kuki_chunk(AVFormatContext *s, int64_t size)
 #define ALAC_HEADER   36
 #define ALAC_NEW_KUKI 24
         uint8_t preamble[12];
-        if (size < ALAC_NEW_KUKI || size > ALAC_PREAMBLE + ALAC_HEADER) {
+        if (size < ALAC_NEW_KUKI) {
             av_log(s, AV_LOG_ERROR, "invalid ALAC magic cookie\n");
             avio_skip(pb, size);
             return AVERROR_INVALIDDATA;

tests/fate/cover-art.mak

@@ -2,6 +2,10 @@ FATE_COVER_ART += fate-cover-art-ape
 fate-cover-art-ape: CMD = md5 -i $(SAMPLES)/cover_art/luckynight_cover.ape -an -c:v copy -f rawvideo
 fate-cover-art-ape: REF = 45333c983c45af54449dff10af144317
 
+FATE_COVER_ART += fate-cover-art-flac
+fate-cover-art-flac: CMD = md5 -i $(SAMPLES)/cover_art/cover_art.flac -an -c:v copy -f rawvideo
+fate-cover-art-flac: REF = 0de1fc6200596fa32b8f7300a14c0261
+
 FATE_COVER_ART += fate-cover-art-m4a
 fate-cover-art-m4a: CMD = md5 -i $(SAMPLES)/cover_art/Owner-iTunes_9.0.3.15.m4a -an -c:v copy -f rawvideo
 fate-cover-art-m4a: REF = 08ba70a3b594ff6345a93965e96a9d3e