10l, fix nuv_header for the case when there is no video stream.

[ffmpeg] / libavformat / mpegts.c

diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index 9554c5acfd2dfdf6ee46b0e9a41d0de44862fab6..6f36e0ace14243db58cc0a23d4385112352db876 100644 (file)
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -18,8 +18,9 @@
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
+
+#include "libavutil/crc.h"
 #include "avformat.h"
-#include "crc.h"
 #include "mpegts.h"
 
 //#define DEBUG_SI
@@ -31,6 +32,7 @@
 /* maximum size in which we look for synchronisation if
    synchronisation is lost */
 #define MAX_RESYNC_SIZE 4096
+#define REGISTRATION_DESCRIPTOR 5
 
 typedef struct PESContext PESContext;
 
@@ -89,6 +91,9 @@ struct MpegTSContext {
     AVFormatContext *stream;
     /** raw packet size, including FEC if present            */
     int raw_packet_size;
+
+    int pos47;
+
     /** if true, all pids are analyzed to find streams       */
     int auto_guess;
 
@@ -223,7 +228,7 @@ static int discard_pid(MpegTSContext *ts, unsigned int pid)
         }
     }
 
-    return (!used && discarded);
+    return !used && discarded;
 }
 
 /**
@@ -262,7 +267,8 @@ static void write_section_data(AVFormatContext *s, MpegTSFilter *tss1,
     if (tss->section_h_size != -1 && tss->section_index >= tss->section_h_size) {
         tss->end_of_section_reached = 1;
         if (!tss->check_crc ||
-            av_crc(av_crc04C11DB7, -1, tss->section_buf, tss->section_h_size) == 0)
+            av_crc(av_crc_get_table(AV_CRC_32_IEEE), -1,
+                   tss->section_buf, tss->section_h_size) == 0)
             tss->section_cb(tss1, tss->section_buf, tss->section_h_size);
     }
 }
@@ -328,8 +334,6 @@ static void mpegts_close_filter(MpegTSContext *ts, MpegTSFilter *filter)
     pid = filter->pid;
     if (filter->type == MPEGTS_SECTION)
         av_freep(&filter->u.section_filter.section_buf);
-    else if (filter->type == MPEGTS_PES)
-        av_freep(&filter->u.pes_filter.opaque);
 
     av_free(filter);
     ts->pids[pid] = NULL;
@@ -477,6 +481,7 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
     int desc_list_len, desc_len, desc_tag;
     int comp_page = 0, anc_page = 0; /* initialize to kill warnings */
     char language[4] = {0}; /* initialize to kill warnings */
+    int has_hdmv_descr = 0;
 
 #ifdef DEBUG_SI
     av_log(ts->stream, AV_LOG_DEBUG, "PMT: len %i\n", section_len);
@@ -504,6 +509,27 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
     program_info_length = get16(&p, p_end) & 0xfff;
     if (program_info_length < 0)
         return;
+    while(program_info_length >= 2) {
+        uint8_t tag, len;
+        tag = get8(&p, p_end);
+        len = get8(&p, p_end);
+        if(len > program_info_length - 2)
+            //something else is broken, exit the program_descriptors_loop
+            break;
+        program_info_length -= len + 2;
+        if(tag == REGISTRATION_DESCRIPTOR && len >= 4) {
+            uint8_t bytes[4];
+            bytes[0] = get8(&p, p_end);
+            bytes[1] = get8(&p, p_end);
+            bytes[2] = get8(&p, p_end);
+            bytes[3] = get8(&p, p_end);
+            len -= 4;
+            if(bytes[0] == 'H' && bytes[1] == 'D' &&
+               bytes[2] == 'M' && bytes[3] == 'V')
+                has_hdmv_descr = 1;
+        }
+        p += len;
+    }
     p += program_info_length;
     if (p >= p_end)
         return;
@@ -587,12 +613,15 @@ static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
         case STREAM_TYPE_AUDIO_AAC:
         case STREAM_TYPE_AUDIO_AC3:
         case STREAM_TYPE_AUDIO_DTS:
+        case STREAM_TYPE_AUDIO_HDMV_DTS:
         case STREAM_TYPE_SUBTITLE_DVB:
-            if(ts->pids[pid]){
-                assert(ts->pids[pid]->type == MPEGTS_PES);
+            if(stream_type == STREAM_TYPE_AUDIO_HDMV_DTS && !has_hdmv_descr)
+                break;
+            if(ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES){
                 pes= ts->pids[pid]->u.pes_filter.opaque;
                 st= pes->st;
             }else{
+                if (ts->pids[pid]) mpegts_close_filter(ts, ts->pids[pid]); //wrongly added sdt filter probably
                 pes = add_pes_stream(ts, pid, pcr_pid, stream_type);
                 if (pes)
                     st = new_pes_av_stream(pes, 0);
@@ -737,6 +766,8 @@ static void sdt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len
                     if(program)
                         av_set_program_name(program, provider_name, name);
                 }
+                av_free(name);
+                av_free(provider_name);
                 break;
             default:
                 break;
@@ -922,6 +953,7 @@ static AVStream* new_pes_av_stream(PESContext *pes, uint32_t code)
         codec_id = CODEC_ID_AC3;
         break;
     case STREAM_TYPE_AUDIO_DTS:
+    case STREAM_TYPE_AUDIO_HDMV_DTS:
         codec_type = CODEC_TYPE_AUDIO;
         codec_id = CODEC_ID_DTS;
         break;
@@ -1018,6 +1050,8 @@ static void handle_packet(MpegTSContext *ts, const uint8_t *packet)
     if (p >= p_end)
         return;
 
+    ts->pos47= url_ftell(ts->stream->pb) % ts->raw_packet_size;
+
     if (tss->type == MPEGTS_SECTION) {
         if (is_start) {
             /* pointer field present */
@@ -1098,7 +1132,7 @@ static int read_packet(ByteIOContext *pb, uint8_t *buf, int raw_packet_size)
 static int handle_packets(MpegTSContext *ts, int nb_packets)
 {
     AVFormatContext *s = ts->stream;
-    ByteIOContext *pb = &s->pb;
+    ByteIOContext *pb = s->pb;
     uint8_t packet[TS_PACKET_SIZE];
     int packet_num, ret;
 
@@ -1180,7 +1214,7 @@ static int mpegts_read_header(AVFormatContext *s,
                               AVFormatParameters *ap)
 {
     MpegTSContext *ts = s->priv_data;
-    ByteIOContext *pb = &s->pb;
+    ByteIOContext *pb = s->pb;
     uint8_t buf[1024];
     int len;
     int64_t pos;
@@ -1243,7 +1277,7 @@ static int mpegts_read_header(AVFormatContext *s,
         nb_pcrs = 0;
         nb_packets = 0;
         for(;;) {
-            ret = read_packet(&s->pb, packet, ts->raw_packet_size);
+            ret = read_packet(s->pb, packet, ts->raw_packet_size);
             if (ret < 0)
                 return -1;
             pid = AV_RB16(packet + 1) & 0x1fff;
@@ -1291,8 +1325,8 @@ static int mpegts_raw_read_packet(AVFormatContext *s,
 
     if (av_new_packet(pkt, TS_PACKET_SIZE) < 0)
         return AVERROR(ENOMEM);
-    pkt->pos= url_ftell(&s->pb);
-    ret = read_packet(&s->pb, pkt->data, ts->raw_packet_size);
+    pkt->pos= url_ftell(s->pb);
+    ret = read_packet(s->pb, pkt->data, ts->raw_packet_size);
     if (ret < 0) {
         av_free_packet(pkt);
         return ret;
@@ -1301,10 +1335,10 @@ static int mpegts_raw_read_packet(AVFormatContext *s,
         /* compute exact PCR for each packet */
         if (parse_pcr(&pcr_h, &pcr_l, pkt->data) == 0) {
             /* we read the next PCR (XXX: optimize it by using a bigger buffer */
-            pos = url_ftell(&s->pb);
+            pos = url_ftell(s->pb);
             for(i = 0; i < MAX_PACKET_READAHEAD; i++) {
-                url_fseek(&s->pb, pos + i * ts->raw_packet_size, SEEK_SET);
-                get_buffer(&s->pb, pcr_buf, 12);
+                url_fseek(s->pb, pos + i * ts->raw_packet_size, SEEK_SET);
+                get_buffer(s->pb, pcr_buf, 12);
                 if (parse_pcr(&next_pcr_h, &next_pcr_l, pcr_buf) == 0) {
                     /* XXX: not precise enough */
                     ts->pcr_incr = ((next_pcr_h - pcr_h) * 300 + (next_pcr_l - pcr_l)) /
@@ -1312,7 +1346,7 @@ static int mpegts_raw_read_packet(AVFormatContext *s,
                     break;
                 }
             }
-            url_fseek(&s->pb, pos, SEEK_SET);
+            url_fseek(s->pb, pos, SEEK_SET);
             /* no next PCR found: we use previous increment */
             ts->cur_pcr = pcr_h * 300 + pcr_l;
         }
@@ -1337,6 +1371,9 @@ static int mpegts_read_close(AVFormatContext *s)
 {
     MpegTSContext *ts = s->priv_data;
     int i;
+
+    clear_programs(ts);
+
     for(i=0;i<NB_PID_MAX;i++)
         if (ts->pids[i]) mpegts_close_filter(ts, ts->pids[i]);
 
@@ -1351,11 +1388,11 @@ static int64_t mpegts_get_pcr(AVFormatContext *s, int stream_index,
     uint8_t buf[TS_PACKET_SIZE];
     int pcr_l, pcr_pid = ((PESContext*)s->streams[stream_index]->priv_data)->pcr_pid;
     const int find_next= 1;
-    pos = ((*ppos  + ts->raw_packet_size - 1) / ts->raw_packet_size) * ts->raw_packet_size;
+    pos = ((*ppos  + ts->raw_packet_size - 1 - ts->pos47) / ts->raw_packet_size) * ts->raw_packet_size + ts->pos47;
     if (find_next) {
         for(;;) {
-            url_fseek(&s->pb, pos, SEEK_SET);
-            if (get_buffer(&s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
+            url_fseek(s->pb, pos, SEEK_SET);
+            if (get_buffer(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
                 return AV_NOPTS_VALUE;
             if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
                 parse_pcr(&timestamp, &pcr_l, buf) == 0) {
@@ -1368,8 +1405,8 @@ static int64_t mpegts_get_pcr(AVFormatContext *s, int stream_index,
             pos -= ts->raw_packet_size;
             if (pos < 0)
                 return AV_NOPTS_VALUE;
-            url_fseek(&s->pb, pos, SEEK_SET);
-            if (get_buffer(&s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
+            url_fseek(s->pb, pos, SEEK_SET);
+            if (get_buffer(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
                 return AV_NOPTS_VALUE;
             if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
                 parse_pcr(&timestamp, &pcr_l, buf) == 0) {
@@ -1390,17 +1427,17 @@ static int read_seek(AVFormatContext *s, int stream_index, int64_t target_ts, in
     if(av_seek_frame_binary(s, stream_index, target_ts, flags) < 0)
         return -1;
 
-    pos= url_ftell(&s->pb);
+    pos= url_ftell(s->pb);
 
     for(;;) {
-        url_fseek(&s->pb, pos, SEEK_SET);
-        if (get_buffer(&s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
+        url_fseek(s->pb, pos, SEEK_SET);
+        if (get_buffer(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
             return -1;
 //        pid = AV_RB16(buf + 1) & 0x1fff;
         if(buf[1] & 0x40) break;
         pos += ts->raw_packet_size;
     }
-    url_fseek(&s->pb, pos, SEEK_SET);
+    url_fseek(s->pb, pos, SEEK_SET);
 
     return 0;
 }
@@ -1460,7 +1497,7 @@ void mpegts_parse_close(MpegTSContext *ts)
 
 AVInputFormat mpegts_demuxer = {
     "mpegts",
-    "MPEG2 transport stream format",
+    NULL_IF_CONFIG_SMALL("MPEG-2 transport stream format"),
     sizeof(MpegTSContext),
     mpegts_probe,
     mpegts_read_header,
@@ -1473,9 +1510,9 @@ AVInputFormat mpegts_demuxer = {
 
 AVInputFormat mpegtsraw_demuxer = {
     "mpegtsraw",
-    "MPEG2 raw transport stream format",
+    NULL_IF_CONFIG_SMALL("MPEG-2 raw transport stream format"),
     sizeof(MpegTSContext),
-    mpegts_probe,
+    NULL,
     mpegts_read_header,
     mpegts_raw_read_packet,
     mpegts_read_close,