ffmpeg: change ost->finished to an enum

Idea-by: ramiro
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

ffmpeg.c

@@ -548,7 +548,7 @@ static void update_benchmark(const char *fmt, ...)
     }
 }
 
-static void close_all_output_streams(OutputStream *ost, int this_stream, int others)
+static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
 {
     int i;
     for (i = 0; i < nb_output_streams; i++) {
@@ -658,15 +658,15 @@ static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
     if (ret < 0) {
         print_error("av_interleaved_write_frame()", ret);
         main_return_code = 1;
-        close_all_output_streams(ost, 3, 1);
+        close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
     }
 }
 
 static void close_output_stream(OutputStream *ost)
 {
     OutputFile *of = output_files[ost->file_index];
 
-    ost->finished |= 1;
+    ost->finished |= ENCODER_FINISHED;
     if (of->shortest) {
         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
         of->recording_time = FFMIN(of->recording_time, end);
@@ -1388,7 +1388,7 @@ static void flush_encoders(void)
                     stop_encoding = 1;
                     break;
                 }
-                if (ost->finished > 1) {
+                if (ost->finished & MUXER_FINISHED) {
                     av_free_packet(&pkt);
                     continue;
                 }

ffmpeg.h

@@ -344,6 +344,11 @@ enum forced_keyframes_const {
 
 extern const char *const forced_keyframes_const_names[];
 
+typedef enum {
+    ENCODER_FINISHED = 1,
+    MUXER_FINISHED = 2,
+} OSTFinished ;
+
 typedef struct OutputStream {
     int file_index;          /* file index */
     int index;               /* stream index in the output file */
@@ -397,7 +402,7 @@ typedef struct OutputStream {
     AVDictionary *swr_opts;
     AVDictionary *resample_opts;
     char *apad;
-    int finished;        /* no more packets should be written for this stream */
+    OSTFinished finished;        /* no more packets should be written for this stream */
     int unavailable;                     /* true if the steram is unavailable (possibly temporarily) */
     int stream_copy;
     const char *attachment_filename;