From c3db0bc61d83598d42a5a7bbc03377360ff81fb9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Reimar=20D=C3=B6ffinger?= <Reimar.Doeffinger@gmx.de>
Date: Fri, 2 Oct 2009 06:40:50 +0000
Subject: [PATCH] Return any error return values from av_get_packet, get_buffer
 etc. unchanged in the raw demuxers. Also remove special handling of 0-size
 reads, if they are due to an error/eof, these are already converted to the
 appropriate error by get_buffer.

Originally committed as revision 20137 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavformat/raw.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

diff --git a/libavformat/raw.c b/libavformat/raw.c
index 260b690664c..ed5f1ca73dd 100644
--- a/libavformat/raw.c
+++ b/libavformat/raw.c
@@ -120,9 +120,8 @@ static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
     ret= av_get_packet(s->pb, pkt, size);
 
     pkt->stream_index = 0;
-    if (ret <= 0) {
-        return AVERROR(EIO);
-    }
+    if (ret < 0)
+        return ret;
 
     bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id);
     assert(bps); // if false there IS a bug elsewhere (NOT in this function)
@@ -144,9 +143,9 @@ int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
     pkt->pos= url_ftell(s->pb);
     pkt->stream_index = 0;
     ret = get_partial_buffer(s->pb, pkt->data, size);
-    if (ret <= 0) {
+    if (ret < 0) {
         av_free_packet(pkt);
-        return AVERROR(EIO);
+        return ret;
     }
     pkt->size = ret;
     return ret;
@@ -171,8 +170,8 @@ static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt)
     pkt->dts= pkt->pos / packet_size;
 
     pkt->stream_index = 0;
-    if (ret <= 0)
-        return AVERROR(EIO);
+    if (ret < 0)
+        return ret;
     return 0;
 }
 #endif
@@ -206,9 +205,9 @@ static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt)
     pkt->pos = url_ftell(s->pb);
     pkt->stream_index = 0;
     ret = get_buffer(s->pb, pkt->data, size);
-    if (ret <= 0) {
+    if (ret < 0) {
         av_free_packet(pkt);
-        return AVERROR(EIO);
+        return ret;
     }
     pkt->size = ret;
     return ret;
-- 
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