From e026395d22eb217623ae16d3e5592c1e1a2c9336 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Thu, 6 Jul 2023 18:11:24 +0200
Subject: [PATCH] lavc/encode: shorten code by using a local variable

---
 libavcodec/encode.c | 48 +++++++++++++++++++++++----------------------
 1 file changed, 25 insertions(+), 23 deletions(-)

diff --git a/libavcodec/encode.c b/libavcodec/encode.c
index 15f6eb11d0..fd182007cc 100644
--- a/libavcodec/encode.c
+++ b/libavcodec/encode.c
@@ -574,6 +574,7 @@ int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *
 
 static int encode_preinit_video(AVCodecContext *avctx)
 {
+    const AVCodec *c = avctx->codec;
     const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
     int i;
 
@@ -583,20 +584,20 @@ static int encode_preinit_video(AVCodecContext *avctx)
         return AVERROR(EINVAL);
     }
 
-    if (avctx->codec->pix_fmts) {
-        for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
-            if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
+    if (c->pix_fmts) {
+        for (i = 0; c->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
+            if (avctx->pix_fmt == c->pix_fmts[i])
                 break;
-        if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
+        if (c->pix_fmts[i] == AV_PIX_FMT_NONE) {
             av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is not supported\n",
                    av_get_pix_fmt_name(avctx->pix_fmt));
             return AVERROR(EINVAL);
         }
-        if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
-            avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
-            avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
-            avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
-            avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
+        if (c->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
+            c->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
+            c->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
+            c->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
+            c->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
             avctx->color_range = AVCOL_RANGE_JPEG;
     }
 
@@ -649,6 +650,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
 
 static int encode_preinit_audio(AVCodecContext *avctx)
 {
+    const AVCodec *c = avctx->codec;
     int i;
 
     if (!av_get_sample_fmt_name(avctx->sample_fmt)) {
@@ -657,28 +659,28 @@ static int encode_preinit_audio(AVCodecContext *avctx)
         return AVERROR(EINVAL);
     }
 
-    if (avctx->codec->sample_fmts) {
-        for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
-            if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
+    if (c->sample_fmts) {
+        for (i = 0; c->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
+            if (avctx->sample_fmt == c->sample_fmts[i])
                 break;
             if (avctx->ch_layout.nb_channels == 1 &&
                 av_get_planar_sample_fmt(avctx->sample_fmt) ==
-                av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
-                avctx->sample_fmt = avctx->codec->sample_fmts[i];
+                av_get_planar_sample_fmt(c->sample_fmts[i])) {
+                avctx->sample_fmt = c->sample_fmts[i];
                 break;
             }
         }
-        if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
+        if (c->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
             av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is not supported\n",
                    av_get_sample_fmt_name(avctx->sample_fmt));
             return AVERROR(EINVAL);
         }
     }
-    if (avctx->codec->supported_samplerates) {
-        for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
-            if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
+    if (c->supported_samplerates) {
+        for (i = 0; c->supported_samplerates[i] != 0; i++)
+            if (avctx->sample_rate == c->supported_samplerates[i])
                 break;
-        if (avctx->codec->supported_samplerates[i] == 0) {
+        if (c->supported_samplerates[i] == 0) {
             av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
                    avctx->sample_rate);
             return AVERROR(EINVAL);
@@ -689,12 +691,12 @@ static int encode_preinit_audio(AVCodecContext *avctx)
                 avctx->sample_rate);
         return AVERROR(EINVAL);
     }
-    if (avctx->codec->ch_layouts) {
-        for (i = 0; avctx->codec->ch_layouts[i].nb_channels; i++) {
-            if (!av_channel_layout_compare(&avctx->ch_layout, &avctx->codec->ch_layouts[i]))
+    if (c->ch_layouts) {
+        for (i = 0; c->ch_layouts[i].nb_channels; i++) {
+            if (!av_channel_layout_compare(&avctx->ch_layout, &c->ch_layouts[i]))
                 break;
         }
-        if (!avctx->codec->ch_layouts[i].nb_channels) {
+        if (!c->ch_layouts[i].nb_channels) {
             char buf[512];
             int ret = av_channel_layout_describe(&avctx->ch_layout, buf, sizeof(buf));
             if (ret > 0)