[FFmpeg-devel] [PATCH] fftools/ffmpeg, ffmpeg_opt: Allocate (In|Out)putStream.pkt early

[Andreas Rheinhardt]

Avoids checks lateron in the hot path.

Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com>
---
 fftools/ffmpeg.c     | 16 +---------------
 fftools/ffmpeg_opt.c |  4 ++--
 2 files changed, 3 insertions(+), 17 deletions(-)

diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c
index 14611480f1..9d4f9d7a2b 100644
--- a/fftools/ffmpeg.c
+++ b/fftools/ffmpeg.c
@@ -1533,9 +1533,6 @@ static int reap_filters(int flush)
         if (av_buffersink_get_type(filter) == AVMEDIA_TYPE_AUDIO)
             init_output_stream_wrapper(ost, NULL, 1);
 
-        if (!ost->pkt && !(ost->pkt = av_packet_alloc())) {
-            return AVERROR(ENOMEM);
-        }
         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) 
{
             return AVERROR(ENOMEM);
         }
@@ -1979,9 +1976,6 @@ static void flush_encoders(void)
             AVPacket *pkt = ost->pkt;
             int pkt_size;
 
-            if (!pkt)
-                break;
-
             switch (enc->codec_type) {
             case AVMEDIA_TYPE_AUDIO:
                 desc   = "audio";
@@ -2597,8 +2591,6 @@ 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 (!ost->pkt && !(ost->pkt = av_packet_alloc()))
-            exit_program(1);
         if (!check_output_constraints(ist, ost) || !ost->encoding_needed
             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
             continue;
@@ -2634,11 +2626,7 @@ static int process_input_packet(InputStream *ist, const 
AVPacket *pkt, int no_eo
     int repeating = 0;
     int eof_reached = 0;
 
-    AVPacket *avpkt;
-
-    if (!ist->pkt && !(ist->pkt = av_packet_alloc()))
-        return AVERROR(ENOMEM);
-    avpkt = ist->pkt;
+    AVPacket *avpkt = ist->pkt;
 
     if (!ist->saw_first_ts) {
         ist->first_dts =
@@ -2809,8 +2797,6 @@ 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 (!ost->pkt && !(ost->pkt = av_packet_alloc()))
-            exit_program(1);
         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
             continue;
 
diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c
index c46a9343e1..e99967ebb3 100644
--- a/fftools/ffmpeg_opt.c
+++ b/fftools/ffmpeg_opt.c
@@ -824,7 +824,7 @@ static void add_input_streams(OptionsContext *o, 
AVFormatContext *ic)
         const AVOption *discard_opt = av_opt_find(&cc, "skip_frame", NULL,
                                                   0, AV_OPT_SEARCH_FAKE_OBJ);
 
-        if (!ist)
+        if (!ist || !(ist->pkt = av_packet_alloc()))
             exit_program(1);
 
         GROW_ARRAY(input_streams, nb_input_streams);
@@ -1486,7 +1486,7 @@ static OutputStream *new_output_stream(OptionsContext *o, 
AVFormatContext *oc, e
         st->id = o->streamid_map[oc->nb_streams - 1];
 
     GROW_ARRAY(output_streams, nb_output_streams);
-    if (!(ost = av_mallocz(sizeof(*ost))))
+    if (!(ost = av_mallocz(sizeof(*ost))) || !(ost->pkt = av_packet_alloc()))
         exit_program(1);
     output_streams[nb_output_streams - 1] = ost;
 
-- 
2.30.2

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