random_seed: Only read /dev/*random if we have unistd.h

[ffmpeg] / libavformat / gsmdec.c

diff --git a/libavformat/gsmdec.c b/libavformat/gsmdec.c
index 291e2c56aab48c1bc914c9422bffef97e0e57821..3525a038c7b8b33d0ea78befc52833890c3945fe 100644 (file)
--- a/libavformat/gsmdec.c
+++ b/libavformat/gsmdec.c
@@ -22,6 +22,7 @@
 #include "libavutil/mathematics.h"
 #include "libavutil/opt.h"
 #include "avformat.h"
+#include "internal.h"
 
 #define GSM_BLOCK_SIZE    33
 #define GSM_BLOCK_SAMPLES 160
@@ -36,10 +37,7 @@ static int gsm_read_packet(AVFormatContext *s, AVPacket *pkt)
 {
     int ret, size;
 
-    size = GSM_BLOCK_SIZE * 32;
-
-    if (av_new_packet(pkt, size) < 0)
-        return AVERROR(ENOMEM);
+    size = GSM_BLOCK_SIZE;
 
     pkt->pos = avio_tell(s->pb);
     pkt->stream_index = 0;
@@ -50,13 +48,13 @@ static int gsm_read_packet(AVFormatContext *s, AVPacket *pkt)
         return ret < 0 ? ret : AVERROR(EIO);
     }
     pkt->size     = ret;
-    pkt->duration = ret      / GSM_BLOCK_SIZE;
+    pkt->duration = 1;
     pkt->pts      = pkt->pos / GSM_BLOCK_SIZE;
 
     return 0;
 }
 
-static int gsm_read_header(AVFormatContext *s, AVFormatParameters *ap)
+static int gsm_read_header(AVFormatContext *s)
 {
     GSMDemuxerContext *c = s->priv_data;
     AVStream *st = avformat_new_stream(s, NULL);
@@ -64,50 +62,16 @@ static int gsm_read_header(AVFormatContext *s, AVFormatParameters *ap)
         return AVERROR(ENOMEM);
 
     st->codec->codec_type  = AVMEDIA_TYPE_AUDIO;
-    st->codec->codec_id    = s->iformat->value;
+    st->codec->codec_id    = s->iformat->raw_codec_id;
     st->codec->channels    = 1;
     st->codec->sample_rate = c->sample_rate;
-    st->codec->block_align = GSM_BLOCK_SIZE;
     st->codec->bit_rate    = GSM_BLOCK_SIZE * 8 * c->sample_rate / GSM_BLOCK_SAMPLES;
 
-    av_set_pts_info(st, 64, GSM_BLOCK_SAMPLES, GSM_SAMPLE_RATE);
+    avpriv_set_pts_info(st, 64, GSM_BLOCK_SAMPLES, GSM_SAMPLE_RATE);
 
     return 0;
 }
 
-static int gsm_read_seek2(AVFormatContext *s, int stream_index, int64_t min_ts,
-                          int64_t ts, int64_t max_ts, int flags)
-{
-    GSMDemuxerContext *c = s->priv_data;
-
-    /* convert timestamps to file positions */
-    if (!(flags & AVSEEK_FLAG_BYTE)) {
-        if (stream_index < 0) {
-            AVRational bitrate_q = { GSM_BLOCK_SAMPLES, c->sample_rate * GSM_BLOCK_SIZE };
-            ts     = av_rescale_q(ts,     AV_TIME_BASE_Q, bitrate_q);
-            min_ts = av_rescale_q(min_ts, AV_TIME_BASE_Q, bitrate_q);
-            max_ts = av_rescale_q(max_ts, AV_TIME_BASE_Q, bitrate_q);
-        } else {
-            ts     *= GSM_BLOCK_SIZE;
-            min_ts *= GSM_BLOCK_SIZE;
-            max_ts *= GSM_BLOCK_SIZE;
-        }
-    }
-    /* round to nearest block boundary */
-    ts = (ts + GSM_BLOCK_SIZE / 2) / GSM_BLOCK_SIZE * GSM_BLOCK_SIZE;
-    ts = FFMAX(0, ts);
-
-    /* handle min/max */
-    while (ts < min_ts)
-        ts += GSM_BLOCK_SIZE;
-    while (ts > max_ts)
-        ts -= GSM_BLOCK_SIZE;
-    if (ts < min_ts || ts > max_ts)
-        return -1;
-
-    return avio_seek(s->pb, ts, SEEK_SET);
-}
-
 static const AVOption options[] = {
     { "sample_rate", "", offsetof(GSMDemuxerContext, sample_rate),
        AV_OPT_TYPE_INT, {.dbl = GSM_SAMPLE_RATE}, 1, INT_MAX / GSM_BLOCK_SIZE,
@@ -128,8 +92,8 @@ AVInputFormat ff_gsm_demuxer = {
     .priv_data_size = sizeof(GSMDemuxerContext),
     .read_header    = gsm_read_header,
     .read_packet    = gsm_read_packet,
-    .read_seek2     = gsm_read_seek2,
+    .flags          = AVFMT_GENERIC_INDEX,
     .extensions     = "gsm",
-    .value          = CODEC_ID_GSM,
+    .raw_codec_id   = CODEC_ID_GSM,
     .priv_class     = &class,
 };