lavc: do not use av_pix_fmt_descriptors directly

Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavcodec/exr.c

@@ -230,6 +230,7 @@ static int decode_frame(AVCodecContext *avctx,
     unsigned int   buf_size = avpkt->size;
     const uint8_t *buf_end  = buf + buf_size;
 
+    const AVPixFmtDescriptor *desc;;
     EXRContext *const s = avctx->priv_data;
     AVFrame *picture  = data;
     AVFrame *const p = &s->picture;
@@ -494,9 +495,10 @@ static int decode_frame(AVCodecContext *avctx,
         avcodec_set_dimensions(avctx, w, h);
     }
 
-    bxmin = xmin * 2 * av_pix_fmt_descriptors[avctx->pix_fmt].nb_components;
-    axmax = (avctx->width - (xmax + 1)) * 2 * av_pix_fmt_descriptors[avctx->pix_fmt].nb_components;
-    out_line_size = avctx->width * 2 * av_pix_fmt_descriptors[avctx->pix_fmt].nb_components;
+    desc = av_pix_fmt_desc_get(avctx->pix_fmt);
+    bxmin = xmin * 2 * desc->nb_components;
+    axmax = (avctx->width - (xmax + 1)) * 2 * desc->nb_components;
+    out_line_size = avctx->width * 2 * desc->nb_components;
     scan_line_size = xdelta * current_channel_offset;
     uncompressed_size = scan_line_size * scan_lines_per_block;
 
@@ -590,7 +592,7 @@ static int decode_frame(AVCodecContext *avctx,
 
                     // Zero out the start if xmin is not 0
                     memset(ptr_x, 0, bxmin);
-                    ptr_x += xmin * av_pix_fmt_descriptors[avctx->pix_fmt].nb_components;
+                    ptr_x += xmin * desc->nb_components;
                     if (s->bits_per_color_id == 2) {
                         // 32-bit
                         for (x = 0; x < xdelta; x++) {

libavcodec/ffv1.c

@@ -916,6 +916,7 @@ static int sort_stt(FFV1Context *s, uint8_t stt[256]){
 
 static av_cold int encode_init(AVCodecContext *avctx)
 {
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
     FFV1Context *s = avctx->priv_data;
     int i, j, k, m;
 
@@ -983,7 +984,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
     case AV_PIX_FMT_YUV420P:
     case AV_PIX_FMT_YUV411P:
     case AV_PIX_FMT_YUV410P:
-        s->chroma_planes= av_pix_fmt_descriptors[avctx->pix_fmt].nb_components < 3 ? 0 : 1;
+        s->chroma_planes= desc->nb_components < 3 ? 0 : 1;
         s->colorspace= 0;
         break;
     case AV_PIX_FMT_YUVA444P:

libavcodec/iff.c

@@ -519,7 +519,8 @@ static int decode_frame_ilbm(AVCodecContext *avctx,
             }
         }
     } else if (avctx->codec_tag == MKTAG('D','E','E','P')) {
-        int raw_width = avctx->width * (av_get_bits_per_pixel(&av_pix_fmt_descriptors[avctx->pix_fmt]) >> 3);
+        const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
+        int raw_width = avctx->width * (av_get_bits_per_pixel(desc) >> 3);
         int x;
         for(y = 0; y < avctx->height && buf < buf_end; y++ ) {
             uint8_t *row = &s->frame.data[0][y * s->frame.linesize[0]];

libavcodec/targaenc.c

@@ -101,7 +101,7 @@ static int targa_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
 
     out = pkt->data + 18;  /* skip past the header we write */
 
-    avctx->bits_per_coded_sample = av_get_bits_per_pixel(&av_pix_fmt_descriptors[avctx->pix_fmt]);
+    avctx->bits_per_coded_sample = av_get_bits_per_pixel(av_pix_fmt_desc_get(avctx->pix_fmt));
     switch(avctx->pix_fmt) {
     case AV_PIX_FMT_PAL8: {
         int pal_bpp = 24; /* Only write 32bit palette if there is transparency information */

libavcodec/tiffenc.c

@@ -239,6 +239,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
 static int encode_frame(AVCodecContext * avctx, AVPacket *pkt,
                         const AVFrame *pict, int *got_packet)
 {
+    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
     TiffEncoderContext *s = avctx->priv_data;
     AVFrame *const p = &s->picture;
     int i;
@@ -260,8 +261,8 @@ static int encode_frame(AVCodecContext * avctx, AVPacket *pkt,
     s->subsampling[1] = 1;
 
     avctx->bits_per_coded_sample =
-    s->bpp = av_get_bits_per_pixel(&av_pix_fmt_descriptors[avctx->pix_fmt]);
-    s->bpp_tab_size = av_pix_fmt_descriptors[avctx->pix_fmt].nb_components;
+    s->bpp = av_get_bits_per_pixel(desc);
+    s->bpp_tab_size = desc->nb_components;
 
     switch (avctx->pix_fmt) {
     case AV_PIX_FMT_RGBA64LE:
@@ -305,7 +306,7 @@ static int encode_frame(AVCodecContext * avctx, AVPacket *pkt,
     }
 
     for (i = 0; i < s->bpp_tab_size; i++)
-        bpp_tab[i] = av_pix_fmt_descriptors[avctx->pix_fmt].comp[i].depth_minus1 + 1;
+        bpp_tab[i] = desc->comp[i].depth_minus1 + 1;
 
     if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE || s->compr == TIFF_LZW)
         //best choose for DEFLATE