avformat: Remove unnecessary av_packet_unref()

Since bae8844 the packet will always be unreferenced when a demuxer returns an error, so that a lot of calls to av_packet_unref() in lots of demuxers are now redundant and can be removed. Signed-off-by: Andreas Rheinhardt <[email protected]> Signed-off-by: Marton Balint <[email protected]>
SaschaVasarrhelyi · Feb 10, 2020 · 6a67d51 · 6a67d51
1 parent bbea268
commit 6a67d51
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Showing 52 changed files with 17 additions and 108 deletions.
diff --git a/libavformat/aacdec.c b/libavformat/aacdec.c
@@ -141,7 +141,6 @@ static int handle_id3(AVFormatContext *s, AVPacket *pkt)
 
     ret = av_append_packet(s->pb, pkt, ff_id3v2_tag_len(pkt->data) - pkt->size);
     if (ret < 0) {
-        av_packet_unref(pkt);
         return ret;
     }
 
@@ -174,7 +173,6 @@ static int adts_aac_read_packet(AVFormatContext *s, AVPacket *pkt)
         return ret;
 
     if (ret < ADTS_HEADER_SIZE) {
-        av_packet_unref(pkt);
         return AVERROR(EIO);
     }
 
@@ -185,7 +183,6 @@ static int adts_aac_read_packet(AVFormatContext *s, AVPacket *pkt)
         av_assert2(append > 0);
         ret = av_append_packet(s->pb, pkt, append);
         if (ret != append) {
-            av_packet_unref(pkt);
             return AVERROR(EIO);
         }
         if (!ff_id3v2_match(pkt->data, ID3v2_DEFAULT_MAGIC)) {
@@ -201,13 +198,10 @@ static int adts_aac_read_packet(AVFormatContext *s, AVPacket *pkt)
 
     fsize = (AV_RB32(pkt->data + 3) >> 13) & 0x1FFF;
     if (fsize < ADTS_HEADER_SIZE) {
-        av_packet_unref(pkt);
         return AVERROR_INVALIDDATA;
     }
 
     ret = av_append_packet(s->pb, pkt, fsize - pkt->size);
-    if (ret < 0)
-        av_packet_unref(pkt);
 
     return ret;
 }

diff --git a/libavformat/adp.c b/libavformat/adp.c
@@ -78,7 +78,6 @@ static int adp_read_packet(AVFormatContext *s, AVPacket *pkt)
 
     if (ret != size) {
         if (ret < 0) {
-            av_packet_unref(pkt);
             return ret;
         }
         av_shrink_packet(pkt, ret);

diff --git a/libavformat/adxdec.c b/libavformat/adxdec.c
@@ -65,11 +65,9 @@ static int adx_read_packet(AVFormatContext *s, AVPacket *pkt)
 
     ret = av_get_packet(s->pb, pkt, size);
     if (ret != size) {
-        av_packet_unref(pkt);
         return ret < 0 ? ret : AVERROR(EIO);
     }
     if (AV_RB16(pkt->data) & 0x8000) {
-        av_packet_unref(pkt);
         return AVERROR_EOF;
     }
     pkt->size     = size;

diff --git a/libavformat/amr.c b/libavformat/amr.c
@@ -153,7 +153,6 @@ static int amr_read_packet(AVFormatContext *s, AVPacket *pkt)
     read              = avio_read(s->pb, pkt->data + 1, size - 1);
 
     if (read != size - 1) {
-        av_packet_unref(pkt);
         if (read < 0)
             return read;
         return AVERROR(EIO);

diff --git a/libavformat/ape.c b/libavformat/ape.c
@@ -419,7 +419,6 @@ static int ape_read_packet(AVFormatContext * s, AVPacket * pkt)
     AV_WL32(pkt->data + 4, ape->frames[ape->currentframe].skip);
     ret = avio_read(s->pb, pkt->data + extra_size, ape->frames[ape->currentframe].size);
     if (ret < 0) {
-        av_packet_unref(pkt);
         return ret;
     }
 

diff --git a/libavformat/avs.c b/libavformat/avs.c
@@ -114,7 +114,6 @@ avs_read_video_packet(AVFormatContext * s, AVPacket * pkt,
     pkt->data[palette_size + 3] = (size >> 8) & 0xFF;
     ret = avio_read(s->pb, pkt->data + palette_size + 4, size - 4) + 4;
     if (ret < size) {
-        av_packet_unref(pkt);
         return AVERROR(EIO);
     }
 

diff --git a/libavformat/brstm.c b/libavformat/brstm.c
@@ -422,8 +422,7 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
             dst += size;
             avio_skip(s->pb, skip);
             if (ret != size) {
-                av_packet_unref(pkt);
-                break;
+                return AVERROR(EIO);
             }
         }
         pkt->duration = samples;

diff --git a/libavformat/c93.c b/libavformat/c93.c
@@ -158,22 +158,19 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
 
     ret = avio_read(pb, pkt->data + 1, datasize);
     if (ret < datasize) {
-        ret = AVERROR(EIO);
-        goto fail;
+        return AVERROR(EIO);
     }
 
     datasize = avio_rl16(pb); /* palette size */
     if (datasize) {
         if (datasize != 768) {
             av_log(s, AV_LOG_ERROR, "invalid palette size %u\n", datasize);
-            ret = AVERROR_INVALIDDATA;
-            goto fail;
+            return AVERROR_INVALIDDATA;
         }
         pkt->data[0] |= C93_HAS_PALETTE;
         ret = avio_read(pb, pkt->data + pkt->size, datasize);
         if (ret < datasize) {
-            ret = AVERROR(EIO);
-            goto fail;
+            return AVERROR(EIO);
         }
         pkt->size += 768;
     }
@@ -186,10 +183,6 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
         pkt->data[0] |= C93_FIRST_FRAME;
     }
     return 0;
-
-    fail:
-    av_packet_unref(pkt);
-    return ret;
 }
 
 AVInputFormat ff_c93_demuxer = {

diff --git a/libavformat/cdxl.c b/libavformat/cdxl.c
@@ -207,7 +207,6 @@ static int cdxl_read_packet(AVFormatContext *s, AVPacket *pkt)
         memcpy(pkt->data, cdxl->header, CDXL_HEADER_SIZE);
         ret = avio_read(pb, pkt->data + CDXL_HEADER_SIZE, video_size);
         if (ret < 0) {
-            av_packet_unref(pkt);
             return ret;
         }
         av_shrink_packet(pkt, CDXL_HEADER_SIZE + ret);

diff --git a/libavformat/concatdec.c b/libavformat/concatdec.c
@@ -542,7 +542,6 @@ static int filter_packet(AVFormatContext *avf, ConcatStream *cs, AVPacket *pkt)
         if (ret < 0) {
             av_log(avf, AV_LOG_ERROR, "h264_mp4toannexb filter "
                    "failed to send input packet\n");
-            av_packet_unref(pkt);
             return ret;
         }
 
@@ -592,7 +591,6 @@ static int concat_read_packet(AVFormatContext *avf, AVPacket *pkt)
         if (ret < 0)
             return ret;
         if ((ret = match_streams(avf)) < 0) {
-            av_packet_unref(pkt);
             return ret;
         }
         if (packet_after_outpoint(cat, pkt)) {
@@ -608,7 +606,7 @@ static int concat_read_packet(AVFormatContext *avf, AVPacket *pkt)
         }
         break;
     }
-    if ((ret = filter_packet(avf, cs, pkt)))
+    if ((ret = filter_packet(avf, cs, pkt)) < 0)
         return ret;
 
     st = cat->avf->streams[pkt->stream_index];

diff --git a/libavformat/dfa.c b/libavformat/dfa.c
@@ -93,15 +93,13 @@ static int dfa_read_packet(AVFormatContext *s, AVPacket *pkt)
         if (!first) {
             ret = av_append_packet(pb, pkt, 12);
             if (ret < 0) {
-                av_packet_unref(pkt);
                 return ret;
             }
         } else
             first = 0;
         frame_size = AV_RL32(pkt->data + pkt->size - 8);
         if (frame_size > INT_MAX - 4) {
             av_log(s, AV_LOG_ERROR, "Too large chunk size: %"PRIu32"\n", frame_size);
-            av_packet_unref(pkt);
             return AVERROR(EIO);
         }
         if (AV_RL32(pkt->data + pkt->size - 12) == MKTAG('E', 'O', 'F', 'R')) {
@@ -115,7 +113,6 @@ static int dfa_read_packet(AVFormatContext *s, AVPacket *pkt)
         }
         ret = av_append_packet(pb, pkt, frame_size);
         if (ret < 0) {
-            av_packet_unref(pkt);
             return ret;
         }
     }

diff --git a/libavformat/dsicin.c b/libavformat/dsicin.c
@@ -200,7 +200,6 @@ static int cin_read_packet(AVFormatContext *s, AVPacket *pkt)
 
         ret = avio_read(pb, &pkt->data[4], pkt_size);
         if (ret < 0) {
-            av_packet_unref(pkt);
             return ret;
         }
         if (ret < pkt_size)

diff --git a/libavformat/dss.c b/libavformat/dss.c
@@ -259,14 +259,12 @@ static int dss_sp_read_packet(AVFormatContext *s, AVPacket *pkt)
     dss_sp_byte_swap(ctx, pkt->data, ctx->dss_sp_buf);
 
     if (ctx->dss_sp_swap_byte < 0) {
-        ret = AVERROR(EAGAIN);
-        goto error_eof;
+        return AVERROR(EAGAIN);
     }
 
     return pkt->size;
 
 error_eof:
-    av_packet_unref(pkt);
     return ret < 0 ? ret : AVERROR_EOF;
 }
 
@@ -308,7 +306,6 @@ static int dss_723_1_read_packet(AVFormatContext *s, AVPacket *pkt)
         ret = avio_read(s->pb, pkt->data + offset,
                         size2 - offset);
         if (ret < size2 - offset) {
-            av_packet_unref(pkt);
             return ret < 0 ? ret : AVERROR_EOF;
         }
 
@@ -318,7 +315,6 @@ static int dss_723_1_read_packet(AVFormatContext *s, AVPacket *pkt)
 
     ret = avio_read(s->pb, pkt->data + offset, size - offset);
     if (ret < size - offset) {
-        av_packet_unref(pkt);
         return ret < 0 ? ret : AVERROR_EOF;
     }
 

diff --git a/libavformat/dxa.c b/libavformat/dxa.c
@@ -210,7 +210,6 @@ static int dxa_read_packet(AVFormatContext *s, AVPacket *pkt)
             memcpy(pkt->data + pal_size, buf, DXA_EXTRA_SIZE);
             ret = avio_read(s->pb, pkt->data + DXA_EXTRA_SIZE + pal_size, size);
             if(ret != size){
-                av_packet_unref(pkt);
                 return AVERROR(EIO);
             }
             if(pal_size) memcpy(pkt->data, pal, pal_size);

diff --git a/libavformat/electronicarts.c b/libavformat/electronicarts.c
@@ -633,7 +633,6 @@ static int ea_read_packet(AVFormatContext *s, AVPacket *pkt)
             case AV_CODEC_ID_ADPCM_EA_R3:
                 if (pkt->size < 4) {
                     av_log(s, AV_LOG_ERROR, "Packet is too short\n");
-                    av_packet_unref(pkt);
                     return AVERROR_INVALIDDATA;
                 }
                 if (ea->audio_codec == AV_CODEC_ID_ADPCM_EA_R3)
@@ -736,8 +735,6 @@ static int ea_read_packet(AVFormatContext *s, AVPacket *pkt)
         }
     }
 
-    if (ret < 0 && partial_packet)
-        av_packet_unref(pkt);
     if (ret >= 0 && hit_end && !packet_read)
         return AVERROR(EAGAIN);
 

diff --git a/libavformat/fitsdec.c b/libavformat/fitsdec.c
@@ -183,7 +183,6 @@ static int fits_read_packet(AVFormatContext *s, AVPacket *pkt)
 
     ret = av_bprint_finalize(&avbuf, &buf);
     if (ret < 0) {
-        av_packet_unref(pkt);
         return ret;
     }
 
@@ -192,7 +191,6 @@ static int fits_read_packet(AVFormatContext *s, AVPacket *pkt)
     av_freep(&buf);
     ret = avio_read(s->pb, pkt->data + pkt->size, size);
     if (ret < 0) {
-        av_packet_unref(pkt);
         return ret;
     }
 

diff --git a/libavformat/flic.c b/libavformat/flic.c
@@ -225,7 +225,6 @@ static int flic_read_packet(AVFormatContext *s,
             ret = avio_read(pb, pkt->data + FLIC_PREAMBLE_SIZE,
                 size - FLIC_PREAMBLE_SIZE);
             if (ret != size - FLIC_PREAMBLE_SIZE) {
-                av_packet_unref(pkt);
                 ret = AVERROR(EIO);
             }
             packet_read = 1;
@@ -241,8 +240,8 @@ static int flic_read_packet(AVFormatContext *s,
             ret = avio_read(pb, pkt->data, size);
 
             if (ret != size) {
-                av_packet_unref(pkt);
                 ret = AVERROR(EIO);
+                break;
             }
 
             packet_read = 1;

diff --git a/libavformat/g723_1.c b/libavformat/g723_1.c
@@ -69,7 +69,6 @@ static int g723_1_read_packet(AVFormatContext *s, AVPacket *pkt)
 
     ret = avio_read(s->pb, pkt->data + 1, size - 1);
     if (ret < size - 1) {
-        av_packet_unref(pkt);
         return ret < 0 ? ret : AVERROR_EOF;
     }
 

diff --git a/libavformat/gdv.c b/libavformat/gdv.c
@@ -182,7 +182,6 @@ static int gdv_read_packet(AVFormatContext *ctx, AVPacket *pkt)
             pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE,
                                           AVPALETTE_SIZE);
             if (!pal) {
-                av_packet_unref(pkt);
                 return AVERROR(ENOMEM);
             }
             memcpy(pal, gdv->pal, AVPALETTE_SIZE);

diff --git a/libavformat/gsmdec.c b/libavformat/gsmdec.c
@@ -62,7 +62,6 @@ static int gsm_read_packet(AVFormatContext *s, AVPacket *pkt)
 
     ret = av_get_packet(s->pb, pkt, size);
     if (ret < GSM_BLOCK_SIZE) {
-        av_packet_unref(pkt);
         return ret < 0 ? ret : AVERROR(EIO);
     }
     pkt->duration = 1;

diff --git a/libavformat/hls.c b/libavformat/hls.c
@@ -2225,7 +2225,6 @@ static int hls_read_packet(AVFormatContext *s, AVPacket *pkt)
         if (ist->codecpar->codec_id != st->codecpar->codec_id) {
             ret = set_stream_info_from_input_stream(st, pls, ist);
             if (ret < 0) {
-                av_packet_unref(pkt);
                 return ret;
             }
         }

diff --git a/libavformat/icodec.c b/libavformat/icodec.c
@@ -185,7 +185,6 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
         bytestream_put_le32(&buf, 0);
 
         if ((ret = avio_read(pb, buf, image->size)) != image->size) {
-            av_packet_unref(pkt);
             return ret < 0 ? ret : AVERROR_INVALIDDATA;
         }
 

diff --git a/libavformat/idcin.c b/libavformat/idcin.c
@@ -313,7 +313,6 @@ static int idcin_read_packet(AVFormatContext *s,
             return ret;
         else if (ret != chunk_size) {
             av_log(s, AV_LOG_ERROR, "incomplete packet\n");
-            av_packet_unref(pkt);
             return AVERROR(EIO);
         }
         if (command == 1) {
@@ -322,7 +321,6 @@ static int idcin_read_packet(AVFormatContext *s,
             pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE,
                                           AVPALETTE_SIZE);
             if (!pal) {
-                av_packet_unref(pkt);
                 return AVERROR(ENOMEM);
             }
             memcpy(pal, palette, AVPALETTE_SIZE);

diff --git a/libavformat/idroqdec.c b/libavformat/idroqdec.c
@@ -224,8 +224,7 @@ static int roq_read_packet(AVFormatContext *s,
             ret = avio_read(pb, pkt->data + RoQ_CHUNK_PREAMBLE_SIZE,
                 chunk_size);
             if (ret != chunk_size) {
-                av_packet_unref(pkt);
-                ret = AVERROR(EIO);
+                return AVERROR(EIO);
             }
 
             packet_read = 1;

diff --git a/libavformat/ilbc.c b/libavformat/ilbc.c
@@ -111,7 +111,6 @@ static int ilbc_read_packet(AVFormatContext *s,
     pkt->pos = avio_tell(s->pb);
     pkt->duration = par->block_align == 38 ? 160 : 240;
     if ((ret = avio_read(s->pb, pkt->data, par->block_align)) != par->block_align) {
-        av_packet_unref(pkt);
         return ret < 0 ? ret : AVERROR(EIO);
     }
 

diff --git a/libavformat/img2dec.c b/libavformat/img2dec.c
@@ -542,7 +542,6 @@ int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
     }
 
     if (ret[0] <= 0 || ret[1] < 0 || ret[2] < 0) {
-        av_packet_unref(pkt);
         if (ret[0] < 0) {
             res = ret[0];
         } else if (ret[1] < 0) {

diff --git a/libavformat/iv8.c b/libavformat/iv8.c
@@ -92,7 +92,6 @@ static int read_packet(AVFormatContext *s, AVPacket *pkt)
             ret = av_append_packet(s->pb, pkt, size);
             if (ret < 0) {
                 av_log(s, AV_LOG_ERROR, "failed to grow packet\n");
-                av_packet_unref(pkt);
                 return ret;
             }
         }

diff --git a/libavformat/libmodplug.c b/libavformat/libmodplug.c
@@ -327,7 +327,6 @@ static int modplug_read_packet(AVFormatContext *s, AVPacket *pkt)
 
     pkt->size = ModPlug_Read(modplug->f, pkt->data, AUDIO_PKT_SIZE);
     if (pkt->size <= 0) {
-        av_packet_unref(pkt);
         return pkt->size == 0 ? AVERROR_EOF : AVERROR(EIO);
     }
     return 0;

diff --git a/libavformat/lxfdec.c b/libavformat/lxfdec.c
@@ -316,7 +316,6 @@ static int lxf_read_packet(AVFormatContext *s, AVPacket *pkt)
         return ret2;
 
     if ((ret2 = avio_read(pb, pkt->data, ret)) != ret) {
-        av_packet_unref(pkt);
         return ret2 < 0 ? ret2 : AVERROR_EOF;
     }
 

diff --git a/libavformat/mov.c b/libavformat/mov.c
@@ -7890,7 +7890,6 @@ static int mov_read_packet(AVFormatContext *s, AVPacket *pkt)
 
     ret = cenc_filter(mov, st, sc, pkt, current_index);
     if (ret < 0) {
-        av_packet_unref(pkt);
         return ret;
     }