lavc: fix usages of av_get_codec_tag_string()

libavcodec/dds.c

@@ -117,7 +117,6 @@ static int parse_pixel_format(AVCodecContext *avctx)
 {
     DDSContext *ctx = avctx->priv_data;
     GetByteContext *gbc = &ctx->gbc;
-    char buf[32];
     uint32_t flags, fourcc, gimp_tag;
     enum DDSDXGIFormat dxgi;
     int size, bpp, r, g, b, a;
@@ -161,13 +160,10 @@ static int parse_pixel_format(AVCodecContext *avctx)
     bytestream2_skip(gbc, 4); // caps4
     bytestream2_skip(gbc, 4); // reserved2
 
-    av_get_codec_tag_string(buf, sizeof(buf), fourcc);
     av_log(avctx, AV_LOG_VERBOSE, "fourcc %s bpp %d "
-           "r 0x%x g 0x%x b 0x%x a 0x%x\n", buf, bpp, r, g, b, a);
-    if (gimp_tag) {
-        av_get_codec_tag_string(buf, sizeof(buf), gimp_tag);
-        av_log(avctx, AV_LOG_VERBOSE, "and GIMP-DDS tag %s\n", buf);
-    }
+           "r 0x%x g 0x%x b 0x%x a 0x%x\n", av_fourcc2str(fourcc), bpp, r, g, b, a);
+    if (gimp_tag)
+        av_log(avctx, AV_LOG_VERBOSE, "and GIMP-DDS tag %s\n", av_fourcc2str(gimp_tag));
 
     if (ctx->compressed)
         avctx->pix_fmt = AV_PIX_FMT_RGBA;
@@ -344,7 +340,7 @@ static int parse_pixel_format(AVCodecContext *avctx)
             }
             break;
         default:
-            av_log(avctx, AV_LOG_ERROR, "Unsupported %s fourcc.\n", buf);
+            av_log(avctx, AV_LOG_ERROR, "Unsupported %s fourcc.\n", av_fourcc2str(fourcc));
             return AVERROR_INVALIDDATA;
         }
     } else if (ctx->paletted) {

libavcodec/mjpegdec.c

@@ -1649,11 +1649,9 @@ static int mjpeg_decode_app(MJpegDecodeContext *s)
     id   = get_bits_long(&s->gb, 32);
     len -= 6;
 
-    if (s->avctx->debug & FF_DEBUG_STARTCODE) {
-        char id_str[32];
-        av_get_codec_tag_string(id_str, sizeof(id_str), av_bswap32(id));
-        av_log(s->avctx, AV_LOG_DEBUG, "APPx (%s / %8X) len=%d\n", id_str, id, len);
-    }
+    if (s->avctx->debug & FF_DEBUG_STARTCODE)
+        av_log(s->avctx, AV_LOG_DEBUG, "APPx (%s / %8X) len=%d\n",
+               av_fourcc2str(av_bswap32(id)), id, len);
 
     /* Buggy AVID, it puts EOI only at every 10th frame. */
     /* Also, this fourcc is used by non-avid files too, it holds some

libavcodec/mmaldec.c

@@ -228,9 +228,8 @@ static void control_port_cb(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
         status = *(uint32_t *)buffer->data;
         av_log(avctx, AV_LOG_ERROR, "MMAL error %d on control port\n", (int)status);
     } else {
-        char s[20];
-        av_get_codec_tag_string(s, sizeof(s), buffer->cmd);
-        av_log(avctx, AV_LOG_WARNING, "Unknown MMAL event %s on control port\n", s);
+        av_log(avctx, AV_LOG_WARNING, "Unknown MMAL event %s on control port\n",
+               av_fourcc2str(buffer->cmd));
     }
 
     mmal_buffer_header_release(buffer);
@@ -352,7 +351,6 @@ static av_cold int ffmmal_init_decoder(AVCodecContext *avctx)
     MMAL_STATUS_T status;
     MMAL_ES_FORMAT_T *format_in;
     MMAL_COMPONENT_T *decoder;
-    char tmp[32];
     int ret = 0;
 
     bcm_host_init();
@@ -399,8 +397,8 @@ static av_cold int ffmmal_init_decoder(AVCodecContext *avctx)
     format_in->es->video.par.den = avctx->sample_aspect_ratio.den;
     format_in->flags = MMAL_ES_FORMAT_FLAG_FRAMED;
 
-    av_get_codec_tag_string(tmp, sizeof(tmp), format_in->encoding);
-    av_log(avctx, AV_LOG_DEBUG, "Using MMAL %s encoding.\n", tmp);
+    av_log(avctx, AV_LOG_DEBUG, "Using MMAL %s encoding.\n",
+           av_fourcc2str(format_in->encoding));
 
 #if HAVE_MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
     if (mmal_port_parameter_set_uint32(decoder->input[0], MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS,
@@ -742,9 +740,8 @@ static int ffmmal_read_frame(AVCodecContext *avctx, AVFrame *frame, int *got_fra
             mmal_buffer_header_release(buffer);
             continue;
         } else if (buffer->cmd) {
-            char s[20];
-            av_get_codec_tag_string(s, sizeof(s), buffer->cmd);
-            av_log(avctx, AV_LOG_WARNING, "Unknown MMAL event %s on output port\n", s);
+            av_log(avctx, AV_LOG_WARNING, "Unknown MMAL event %s on output port\n",
+                   av_fourcc2str(buffer->cmd));
             goto done;
         } else if (buffer->length == 0) {
             // Unused output buffer that got drained after format change.

libavcodec/sheervideo.c

@@ -2879,7 +2879,6 @@ static int decode_frame(AVCodecContext *avctx,
     AVFrame *p = data;
     GetBitContext gb;
     unsigned format;
-    char format_str[32];
     int ret;
 
     if (avpkt->size <= 20)
@@ -2891,8 +2890,7 @@ static int decode_frame(AVCodecContext *avctx,
 
     s->alt = 0;
     format = AV_RL32(avpkt->data + 16);
-    av_get_codec_tag_string(format_str, sizeof(format_str), format);
-    av_log(avctx, AV_LOG_DEBUG, "format: %s\n", format_str);
+    av_log(avctx, AV_LOG_DEBUG, "format: %s\n", av_fourcc2str(format));
     switch (format) {
     case MKTAG(' ', 'R', 'G', 'B'):
         avctx->pix_fmt = AV_PIX_FMT_RGB0;

libavcodec/utils.c

@@ -3256,12 +3256,9 @@ void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
                  ", %d reference frame%s",
                  enc->refs, enc->refs > 1 ? "s" : "");
 
-    if (enc->codec_tag) {
-        char tag_buf[32];
-        av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
-        snprintf(buf + strlen(buf), buf_size - strlen(buf),
-                 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
-    }
+    if (enc->codec_tag)
+        snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s / 0x%04X)",
+                 av_fourcc2str(enc->codec_tag), enc->codec_tag);
 
     switch (enc->codec_type) {
     case AVMEDIA_TYPE_VIDEO: