From 8e092c3eac399d457e470decffa1081251d00648 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Wed, 3 Aug 2022 11:32:10 +0200
Subject: fftools/ffmpeg: remove OutputStream.encoding_needed

It is unnecessary, as it is always exactly equivalent to !!ost->enc_ctx
---
 fftools/ffmpeg.c     | 10 +++++-----
 fftools/ffmpeg.h     |  1 -
 fftools/ffmpeg_opt.c |  8 ++------
 3 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c
index cf61706ac0..a38e758e77 100644
--- a/fftools/ffmpeg.c
+++ b/fftools/ffmpeg.c
@@ -1536,7 +1536,7 @@ static void print_final_stats(int64_t total_size)
 
             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
                    i, j, av_get_media_type_string(type));
-            if (ost->encoding_needed) {
+            if (ost->enc_ctx) {
                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
                        ost->frames_encoded);
                 if (type == AVMEDIA_TYPE_AUDIO)
@@ -1788,7 +1788,7 @@ static void flush_encoders(void)
         AVCodecContext *enc = ost->enc_ctx;
         OutputFile      *of = output_files[ost->file_index];
 
-        if (!ost->encoding_needed)
+        if (!enc)
             continue;
 
         // Try to enable encoding with no input frames.
@@ -2359,7 +2359,7 @@ static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output,
     for (i = 0; i < nb_output_streams; i++) {
         OutputStream *ost = output_streams[i];
 
-        if (!check_output_constraints(ist, ost) || !ost->encoding_needed
+        if (!check_output_constraints(ist, ost) || !ost->enc_ctx
             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
             continue;
 
@@ -2568,7 +2568,7 @@ static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eo
     for (i = 0; i < nb_output_streams; i++) {
         OutputStream *ost = output_streams[i];
 
-        if (!check_output_constraints(ist, ost) || ost->encoding_needed ||
+        if (!check_output_constraints(ist, ost) || ost->enc_ctx ||
             (!pkt && no_eof))
             continue;
 
@@ -3137,7 +3137,7 @@ static int init_output_stream(OutputStream *ost, AVFrame *frame,
     OutputFile *of = output_files[ost->file_index];
     int ret = 0;
 
-    if (ost->encoding_needed) {
+    if (ost->enc_ctx) {
         const AVCodec *codec = ost->enc;
         AVCodecContext *dec = NULL;
         InputStream *ist;
diff --git a/fftools/ffmpeg.h b/fftools/ffmpeg.h
index 713de42e2b..69e4758a2d 100644
--- a/fftools/ffmpeg.h
+++ b/fftools/ffmpeg.h
@@ -464,7 +464,6 @@ typedef struct OutputStream {
     int index;               /* stream index in the output file */
     int source_index;        /* InputStream index */
     AVStream *st;            /* stream in the output file */
-    int encoding_needed;     /* true if encoding needed for this stream */
     /* number of frames emitted by the video-encoding sync code */
     int64_t vsync_frame_number;
     /* input pts and corresponding output pts
diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c
index 784209e770..ffa320da87 100644
--- a/fftools/ffmpeg_opt.c
+++ b/fftools/ffmpeg_opt.c
@@ -1559,10 +1559,6 @@ static int choose_encoder(OptionsContext *o, AVFormatContext *s, OutputStream *o
             ost->enc = find_codec_or_die(codec_name, ost->st->codecpar->codec_type, 1);
             ost->st->codecpar->codec_id = ost->enc->id;
         }
-        ost->encoding_needed = !!ost->enc;
-    } else {
-        /* no encoding supported for other media types */
-        ost->encoding_needed = 0;
     }
 
     return 0;
@@ -2433,7 +2429,7 @@ static int setup_sync_queues(OutputFile *of, AVFormatContext *oc, int64_t buf_si
     int limit_frames = 0, limit_frames_av_enc = 0;
 
 #define IS_AV_ENC(ost, type)  \
-    (ost->encoding_needed && (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO))
+    (ost->enc_ctx && (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO))
 #define IS_INTERLEAVED(type) (type != AVMEDIA_TYPE_ATTACHMENT)
 
     for (int i = 0; i < oc->nb_streams; i++) {
@@ -3043,7 +3039,7 @@ static int open_output_file(OptionsContext *o, const char *filename)
     for (i = of->ost_index; i < nb_output_streams; i++) {
         OutputStream *ost = output_streams[i];
 
-        if (ost->encoding_needed && ost->source_index >= 0) {
+        if (ost->enc_ctx && ost->source_index >= 0) {
             InputStream *ist = input_streams[ost->source_index];
             ist->decoding_needed |= DECODING_FOR_OST;
             ist->processing_needed = 1;
-- 
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