avformat: Constify all muxer/demuxers

[ffmpeg] / libavformat / mpegtsenc.c

diff --git a/libavformat/mpegtsenc.c b/libavformat/mpegtsenc.c
index 8158a204978998f05ba0a1b22e18bdd9bbe05c67..3fafce00902b1ea452e134096196b9bb9fcb68c8 100644 (file)
--- a/libavformat/mpegtsenc.c
+++ b/libavformat/mpegtsenc.c
@@ -77,6 +77,7 @@ typedef struct MpegTSWrite {
     MpegTSSection pat; /* MPEG-2 PAT table */
     MpegTSSection sdt; /* MPEG-2 SDT table context */
     MpegTSService **services;
+    AVPacket *pkt;
     int64_t sdt_period; /* SDT period in PCR time base */
     int64_t pat_period; /* PAT/PMT period in PCR time base */
     int nb_services;
@@ -458,6 +459,8 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
         AVStream *st = s->streams[i];
         MpegTSWriteStream *ts_st = st->priv_data;
         AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
+        const char default_language[] = "und";
+        const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
         enum AVCodecID codec_id = st->codecpar->codec_id;
 
         if (s->nb_programs) {
@@ -597,16 +600,18 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
                 }
             }
 
-            if (lang) {
-                char *p;
-                char *next = lang->value;
+            if (language != default_language ||
+                st->disposition & (AV_DISPOSITION_CLEAN_EFFECTS    |
+                                   AV_DISPOSITION_HEARING_IMPAIRED |
+                                   AV_DISPOSITION_VISUAL_IMPAIRED)) {
+                const char *p, *next;
                 uint8_t *len_ptr;
 
                 *q++     = ISO_639_LANGUAGE_DESCRIPTOR;
                 len_ptr  = q++;
                 *len_ptr = 0;
 
-                for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
+                for (p = next = language; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
                     if (q - data > SECTION_LENGTH - 4) {
                         err = 1;
                         break;
@@ -636,10 +641,6 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
             }
             break;
         case AVMEDIA_TYPE_SUBTITLE:
-        {
-           const char default_language[] = "und";
-           const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
-
            if (codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
                uint8_t *len_ptr;
                int extradata_copied = 0;
@@ -714,7 +715,6 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
 
                *len_ptr = q - len_ptr - 1;
             }
-        }
         break;
         case AVMEDIA_TYPE_VIDEO:
             if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {
@@ -1022,6 +1022,10 @@ static int mpegts_init(AVFormatContext *s)
     ts->sdt.write_packet = section_write_packet;
     ts->sdt.opaque       = s;
 
+    ts->pkt = av_packet_alloc();
+    if (!ts->pkt)
+        return AVERROR(ENOMEM);
+
     /* assign pids to each stream */
     for (i = 0; i < s->nb_streams; i++) {
         AVStream *st = s->streams[i];
@@ -1677,7 +1681,7 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
     const int64_t max_audio_delay = av_rescale(s->max_delay, 90000, AV_TIME_BASE) / 2;
     int64_t dts = pkt->dts, pts = pkt->pts;
     int opus_samples = 0;
-    buffer_size_t side_data_size;
+    size_t side_data_size;
     uint8_t *side_data = NULL;
     int stream_id = -1;
 
@@ -1745,23 +1749,23 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
         }
         if ((AV_RB16(pkt->data) & 0xfff0) != 0xfff0) {
             int ret;
-            AVPacket pkt2;
+            AVPacket *pkt2 = ts->pkt;
 
             if (!ts_st->amux) {
                 av_log(s, AV_LOG_ERROR, "AAC bitstream not in ADTS format "
                                         "and extradata missing\n");
             } else {
-                av_init_packet(&pkt2);
-                pkt2.data = pkt->data;
-                pkt2.size = pkt->size;
+                av_packet_unref(pkt2);
+                pkt2->data = pkt->data;
+                pkt2->size = pkt->size;
                 av_assert0(pkt->dts != AV_NOPTS_VALUE);
-                pkt2.dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
+                pkt2->dts = av_rescale_q(pkt->dts, st->time_base, ts_st->amux->streams[0]->time_base);
 
                 ret = avio_open_dyn_buf(&ts_st->amux->pb);
                 if (ret < 0)
                     return ret;
 
-                ret = av_write_frame(ts_st->amux, &pkt2);
+                ret = av_write_frame(ts_st->amux, pkt2);
                 if (ret < 0) {
                     ffio_free_dyn_buf(&ts_st->amux->pb);
                     return ret;
@@ -1814,7 +1818,7 @@ static int mpegts_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
         /* Add Opus control header */
         if ((AV_RB16(pkt->data) >> 5) != 0x3ff) {
             uint8_t *side_data;
-            buffer_size_t side_data_size;
+            size_t side_data_size;
             int i, n;
             int ctrl_header_size;
             int trim_start = 0, trim_end = 0;
@@ -2020,6 +2024,8 @@ static void mpegts_deinit(AVFormatContext *s)
     MpegTSService *service;
     int i;
 
+    av_packet_free(&ts->pkt);
+
     for (i = 0; i < s->nb_streams; i++) {
         AVStream *st = s->streams[i];
         MpegTSWriteStream *ts_st = st->priv_data;
@@ -2128,7 +2134,7 @@ static const AVClass mpegts_muxer_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-AVOutputFormat ff_mpegts_muxer = {
+const AVOutputFormat ff_mpegts_muxer = {
     .name           = "mpegts",
     .long_name      = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
     .mime_type      = "video/MP2T",