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avi: Check return value of GstByteWriter

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This commit is contained in:
Edward Hervey 2012-04-12 15:47:49 +02:00
parent ba7569028c
commit 4bd694d2cd
1 changed files with 99 additions and 91 deletions
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190
gst/avi/gstavimux.c
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@ -1056,15 +1056,16 @@ static inline guint
gst_avi_mux_start_chunk (GstByteWriter * bw, const gchar * tag, guint32 fourcc) gst_avi_mux_start_chunk (GstByteWriter * bw, const gchar * tag, guint32 fourcc)
{ {
guint chunk_offset; guint chunk_offset;
gboolean hdl = TRUE;
if (tag) if (tag)
gst_byte_writer_put_data (bw, (const guint8 *) tag, 4); hdl &= gst_byte_writer_put_data (bw, (const guint8 *) tag, 4);
else else
gst_byte_writer_put_uint32_le (bw, fourcc); hdl &= gst_byte_writer_put_uint32_le (bw, fourcc);
chunk_offset = gst_byte_writer_get_pos (bw); chunk_offset = gst_byte_writer_get_pos (bw);
/* real chunk size comes later */ /* real chunk size comes later */
gst_byte_writer_put_uint32_le (bw, 0); hdl &= gst_byte_writer_put_uint32_le (bw, 0);
return chunk_offset; return chunk_offset;
} }
@ -1073,16 +1074,17 @@ static inline void
gst_avi_mux_end_chunk (GstByteWriter * bw, guint chunk_offset) gst_avi_mux_end_chunk (GstByteWriter * bw, guint chunk_offset)
{ {
guint size; guint size;
gboolean hdl = TRUE;
size = gst_byte_writer_get_pos (bw); size = gst_byte_writer_get_pos (bw);
gst_byte_writer_set_pos (bw, chunk_offset); gst_byte_writer_set_pos (bw, chunk_offset);
gst_byte_writer_put_uint32_le (bw, size - chunk_offset - 4); hdl &= gst_byte_writer_put_uint32_le (bw, size - chunk_offset - 4);
gst_byte_writer_set_pos (bw, size); gst_byte_writer_set_pos (bw, size);
/* arrange for even padding */ /* arrange for even padding */
if (size & 1) if (size & 1)
gst_byte_writer_put_uint8 (bw, 0); hdl &= gst_byte_writer_put_uint8 (bw, 0);
} }
/* maybe some of these functions should be moved to riff.h? */ /* maybe some of these functions should be moved to riff.h? */
@ -1130,12 +1132,13 @@ static GstBuffer *
gst_avi_mux_riff_get_avi_header (GstAviMux * avimux) gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
{ {
const GstTagList *tags; const GstTagList *tags;
GstBuffer *buffer; GstBuffer *buffer = NULL;
gint size = 0; gint size = 0;
GstByteWriter bw; GstByteWriter bw;
GSList *node; GSList *node;
guint avih, riff, hdrl; guint avih, riff, hdrl;
GstMapInfo map; GstMapInfo map;
gboolean hdl = TRUE;
GST_DEBUG_OBJECT (avimux, "creating avi header, data_size %u, idx_size %u", GST_DEBUG_OBJECT (avimux, "creating avi header, data_size %u, idx_size %u",
avimux->data_size, avimux->idx_size); avimux->data_size, avimux->idx_size);
@ -1154,26 +1157,26 @@ gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
/* avi header metadata */ /* avi header metadata */
riff = gst_avi_mux_start_chunk (&bw, "RIFF", 0); riff = gst_avi_mux_start_chunk (&bw, "RIFF", 0);
gst_byte_writer_put_data (&bw, (guint8 *) "AVI ", 4); hdl &= gst_byte_writer_put_data (&bw, (guint8 *) "AVI ", 4);
hdrl = gst_avi_mux_start_chunk (&bw, "LIST", 0); hdrl = gst_avi_mux_start_chunk (&bw, "LIST", 0);
gst_byte_writer_put_data (&bw, (guint8 *) "hdrl", 4); hdl &= gst_byte_writer_put_data (&bw, (guint8 *) "hdrl", 4);
avih = gst_avi_mux_start_chunk (&bw, "avih", 0); avih = gst_avi_mux_start_chunk (&bw, "avih", 0);
/* the AVI header itself */ /* the AVI header itself */
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.us_frame); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.us_frame);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.max_bps); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.max_bps);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.pad_gran); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.pad_gran);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.flags); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.flags);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.tot_frames); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.tot_frames);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.init_frames); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.init_frames);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.streams); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.streams);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.bufsize); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.bufsize);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.width); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.width);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.height); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.height);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.scale); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.scale);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.rate); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.rate);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.start); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.start);
gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.length); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->avi_hdr.length);
gst_avi_mux_end_chunk (&bw, avih); gst_avi_mux_end_chunk (&bw, avih);
/* stream data */ /* stream data */
@ -1187,26 +1190,26 @@ gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
/* stream list metadata */ /* stream list metadata */
strl = gst_avi_mux_start_chunk (&bw, "LIST", 0); strl = gst_avi_mux_start_chunk (&bw, "LIST", 0);
gst_byte_writer_put_data (&bw, (guint8 *) "strl", 4); hdl &= gst_byte_writer_put_data (&bw, (guint8 *) "strl", 4);
/* generic header */ /* generic header */
strh = gst_avi_mux_start_chunk (&bw, "strh", 0); strh = gst_avi_mux_start_chunk (&bw, "strh", 0);
gst_byte_writer_put_uint32_le (&bw, avipad->hdr.type); hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->hdr.type);
gst_byte_writer_put_uint32_le (&bw, avipad->hdr.fcc_handler); hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->hdr.fcc_handler);
gst_byte_writer_put_uint32_le (&bw, avipad->hdr.flags); hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->hdr.flags);
gst_byte_writer_put_uint32_le (&bw, avipad->hdr.priority); hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->hdr.priority);
gst_byte_writer_put_uint32_le (&bw, avipad->hdr.init_frames); hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->hdr.init_frames);
gst_byte_writer_put_uint32_le (&bw, avipad->hdr.scale); hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->hdr.scale);
gst_byte_writer_put_uint32_le (&bw, avipad->hdr.rate); hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->hdr.rate);
gst_byte_writer_put_uint32_le (&bw, avipad->hdr.start); hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->hdr.start);
gst_byte_writer_put_uint32_le (&bw, avipad->hdr.length); hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->hdr.length);
gst_byte_writer_put_uint32_le (&bw, avipad->hdr.bufsize); hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->hdr.bufsize);
gst_byte_writer_put_uint32_le (&bw, avipad->hdr.quality); hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->hdr.quality);
gst_byte_writer_put_uint32_le (&bw, avipad->hdr.samplesize); hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->hdr.samplesize);
gst_byte_writer_put_uint16_le (&bw, 0); hdl &= gst_byte_writer_put_uint16_le (&bw, 0);
gst_byte_writer_put_uint16_le (&bw, 0); hdl &= gst_byte_writer_put_uint16_le (&bw, 0);
gst_byte_writer_put_uint16_le (&bw, 0); hdl &= gst_byte_writer_put_uint16_le (&bw, 0);
gst_byte_writer_put_uint16_le (&bw, 0); hdl &= gst_byte_writer_put_uint16_le (&bw, 0);
gst_avi_mux_end_chunk (&bw, strh); gst_avi_mux_end_chunk (&bw, strh);
if (avipad->is_video) { if (avipad->is_video) {
@ -1215,20 +1218,21 @@ gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
/* the video header */ /* the video header */
strf = gst_avi_mux_start_chunk (&bw, "strf", 0); strf = gst_avi_mux_start_chunk (&bw, "strf", 0);
/* the actual header */ /* the actual header */
gst_byte_writer_put_uint32_le (&bw, vidpad->vids.size + codec_size); hdl &=
gst_byte_writer_put_uint32_le (&bw, vidpad->vids.width); gst_byte_writer_put_uint32_le (&bw, vidpad->vids.size + codec_size);
gst_byte_writer_put_uint32_le (&bw, vidpad->vids.height); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vids.width);
gst_byte_writer_put_uint16_le (&bw, vidpad->vids.planes); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vids.height);
gst_byte_writer_put_uint16_le (&bw, vidpad->vids.bit_cnt); hdl &= gst_byte_writer_put_uint16_le (&bw, vidpad->vids.planes);
gst_byte_writer_put_uint32_le (&bw, vidpad->vids.compression); hdl &= gst_byte_writer_put_uint16_le (&bw, vidpad->vids.bit_cnt);
gst_byte_writer_put_uint32_le (&bw, vidpad->vids.image_size); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vids.compression);
gst_byte_writer_put_uint32_le (&bw, vidpad->vids.xpels_meter); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vids.image_size);
gst_byte_writer_put_uint32_le (&bw, vidpad->vids.ypels_meter); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vids.xpels_meter);
gst_byte_writer_put_uint32_le (&bw, vidpad->vids.num_colors); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vids.ypels_meter);
gst_byte_writer_put_uint32_le (&bw, vidpad->vids.imp_colors); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vids.num_colors);
hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vids.imp_colors);
if (vidpad->vids_codec_data) { if (vidpad->vids_codec_data) {
gst_buffer_map (vidpad->vids_codec_data, &map, GST_MAP_READ); gst_buffer_map (vidpad->vids_codec_data, &map, GST_MAP_READ);
gst_byte_writer_put_data (&bw, map.data, map.size); hdl &= gst_byte_writer_put_data (&bw, map.data, map.size);
gst_buffer_unmap (vidpad->vids_codec_data, &map); gst_buffer_unmap (vidpad->vids_codec_data, &map);
} }
gst_avi_mux_end_chunk (&bw, strf); gst_avi_mux_end_chunk (&bw, strf);
@ -1244,28 +1248,28 @@ gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
/* the vprp header */ /* the vprp header */
vprp = gst_avi_mux_start_chunk (&bw, "vprp", 0); vprp = gst_avi_mux_start_chunk (&bw, "vprp", 0);
/* the actual data */ /* the actual data */
gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.format_token); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.format_token);
gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.standard); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.standard);
gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.vert_rate); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.vert_rate);
gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.hor_t_total); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.hor_t_total);
gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.vert_lines); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.vert_lines);
gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.aspect); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.aspect);
gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.width); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.width);
gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.height); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.height);
gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.fields); hdl &= gst_byte_writer_put_uint32_le (&bw, vidpad->vprp.fields);
for (f = 0; f < vidpad->vprp.fields; ++f) { for (f = 0; f < vidpad->vprp.fields; ++f) {
gst_riff_vprp_video_field_desc *fd; gst_riff_vprp_video_field_desc *fd;
fd = &(vidpad->vprp.field_info[f]); fd = &(vidpad->vprp.field_info[f]);
gst_byte_writer_put_uint32_le (&bw, fd->compressed_bm_height); hdl &= gst_byte_writer_put_uint32_le (&bw, fd->compressed_bm_height);
gst_byte_writer_put_uint32_le (&bw, fd->compressed_bm_width); hdl &= gst_byte_writer_put_uint32_le (&bw, fd->compressed_bm_width);
gst_byte_writer_put_uint32_le (&bw, fd->valid_bm_height); hdl &= gst_byte_writer_put_uint32_le (&bw, fd->valid_bm_height);
gst_byte_writer_put_uint32_le (&bw, fd->valid_bm_width); hdl &= gst_byte_writer_put_uint32_le (&bw, fd->valid_bm_width);
gst_byte_writer_put_uint32_le (&bw, fd->valid_bm_x_offset); hdl &= gst_byte_writer_put_uint32_le (&bw, fd->valid_bm_x_offset);
gst_byte_writer_put_uint32_le (&bw, fd->valid_bm_y_offset); hdl &= gst_byte_writer_put_uint32_le (&bw, fd->valid_bm_y_offset);
gst_byte_writer_put_uint32_le (&bw, fd->video_x_t_offset); hdl &= gst_byte_writer_put_uint32_le (&bw, fd->video_x_t_offset);
gst_byte_writer_put_uint32_le (&bw, fd->video_y_start); hdl &= gst_byte_writer_put_uint32_le (&bw, fd->video_y_start);
} }
gst_avi_mux_end_chunk (&bw, vprp); gst_avi_mux_end_chunk (&bw, vprp);
} }
@ -1275,16 +1279,16 @@ gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
/* the audio header */ /* the audio header */
strf = gst_avi_mux_start_chunk (&bw, "strf", 0); strf = gst_avi_mux_start_chunk (&bw, "strf", 0);
/* the actual header */ /* the actual header */
gst_byte_writer_put_uint16_le (&bw, audpad->auds.format); hdl &= gst_byte_writer_put_uint16_le (&bw, audpad->auds.format);
gst_byte_writer_put_uint16_le (&bw, audpad->auds.channels); hdl &= gst_byte_writer_put_uint16_le (&bw, audpad->auds.channels);
gst_byte_writer_put_uint32_le (&bw, audpad->auds.rate); hdl &= gst_byte_writer_put_uint32_le (&bw, audpad->auds.rate);
gst_byte_writer_put_uint32_le (&bw, audpad->auds.av_bps); hdl &= gst_byte_writer_put_uint32_le (&bw, audpad->auds.av_bps);
gst_byte_writer_put_uint16_le (&bw, audpad->auds.blockalign); hdl &= gst_byte_writer_put_uint16_le (&bw, audpad->auds.blockalign);
gst_byte_writer_put_uint16_le (&bw, audpad->auds.size); hdl &= gst_byte_writer_put_uint16_le (&bw, audpad->auds.size);
gst_byte_writer_put_uint16_le (&bw, codec_size); hdl &= gst_byte_writer_put_uint16_le (&bw, codec_size);
if (audpad->auds_codec_data) { if (audpad->auds_codec_data) {
gst_buffer_map (audpad->auds_codec_data, &map, GST_MAP_READ); gst_buffer_map (audpad->auds_codec_data, &map, GST_MAP_READ);
gst_byte_writer_put_data (&bw, map.data, map.size); hdl &= gst_byte_writer_put_data (&bw, map.data, map.size);
gst_buffer_unmap (vidpad->vids_codec_data, &map); gst_buffer_unmap (vidpad->vids_codec_data, &map);
} }
gst_avi_mux_end_chunk (&bw, strf); gst_avi_mux_end_chunk (&bw, strf);
@ -1295,15 +1299,15 @@ gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
indx = gst_avi_mux_start_chunk (&bw, "indx", 0); indx = gst_avi_mux_start_chunk (&bw, "indx", 0);
else else
indx = gst_avi_mux_start_chunk (&bw, "JUNK", 0); indx = gst_avi_mux_start_chunk (&bw, "JUNK", 0);
gst_byte_writer_put_uint16_le (&bw, 4); /* bytes per entry */ hdl &= gst_byte_writer_put_uint16_le (&bw, 4); /* bytes per entry */
gst_byte_writer_put_uint8 (&bw, 0); /* index subtype */ hdl &= gst_byte_writer_put_uint8 (&bw, 0); /* index subtype */
gst_byte_writer_put_uint8 (&bw, GST_AVI_INDEX_OF_INDEXES); /* index type */ hdl &= gst_byte_writer_put_uint8 (&bw, GST_AVI_INDEX_OF_INDEXES); /* index type */
gst_byte_writer_put_uint32_le (&bw, avipad->idx_index); /* entries in use */ hdl &= gst_byte_writer_put_uint32_le (&bw, avipad->idx_index); /* entries in use */
gst_byte_writer_put_data (&bw, (guint8 *) avipad->tag, 4); /* stream id */ hdl &= gst_byte_writer_put_data (&bw, (guint8 *) avipad->tag, 4); /* stream id */
gst_byte_writer_put_uint32_le (&bw, 0); /* reserved */ hdl &= gst_byte_writer_put_uint32_le (&bw, 0); /* reserved */
gst_byte_writer_put_uint32_le (&bw, 0); /* reserved */ hdl &= gst_byte_writer_put_uint32_le (&bw, 0); /* reserved */
gst_byte_writer_put_uint32_le (&bw, 0); /* reserved */ hdl &= gst_byte_writer_put_uint32_le (&bw, 0); /* reserved */
gst_byte_writer_put_data (&bw, (guint8 *) avipad->idx, hdl &= gst_byte_writer_put_data (&bw, (guint8 *) avipad->idx,
GST_AVI_SUPERINDEX_COUNT * sizeof (gst_avi_superindex_entry)); GST_AVI_SUPERINDEX_COUNT * sizeof (gst_avi_superindex_entry));
gst_avi_mux_end_chunk (&bw, indx); gst_avi_mux_end_chunk (&bw, indx);
@ -1317,9 +1321,9 @@ gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
guint odml, dmlh; guint odml, dmlh;
/* odml header */ /* odml header */
odml = gst_avi_mux_start_chunk (&bw, "LIST", 0); odml = gst_avi_mux_start_chunk (&bw, "LIST", 0);
gst_byte_writer_put_data (&bw, (guint8 *) "odml", 4); hdl &= gst_byte_writer_put_data (&bw, (guint8 *) "odml", 4);
dmlh = gst_avi_mux_start_chunk (&bw, "dmlh", 0); dmlh = gst_avi_mux_start_chunk (&bw, "dmlh", 0);
gst_byte_writer_put_uint32_le (&bw, avimux->total_frames); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->total_frames);
gst_avi_mux_end_chunk (&bw, dmlh); gst_avi_mux_end_chunk (&bw, dmlh);
gst_avi_mux_end_chunk (&bw, odml); gst_avi_mux_end_chunk (&bw, odml);
} }
@ -1332,7 +1336,7 @@ gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
guint info; guint info;
info = gst_avi_mux_start_chunk (&bw, "LIST", 0); info = gst_avi_mux_start_chunk (&bw, "LIST", 0);
gst_byte_writer_put_data (&bw, (guint8 *) "INFO", 4); hdl &= gst_byte_writer_put_data (&bw, (guint8 *) "INFO", 4);
gst_tag_list_foreach (tags, gst_avi_mux_write_tag, &bw); gst_tag_list_foreach (tags, gst_avi_mux_write_tag, &bw);
if (info + 8 == gst_byte_writer_get_pos (&bw)) { if (info + 8 == gst_byte_writer_get_pos (&bw)) {
@ -1348,9 +1352,12 @@ gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
gst_avi_mux_end_chunk (&bw, riff); gst_avi_mux_end_chunk (&bw, riff);
/* avi data header */ /* avi data header */
gst_byte_writer_put_data (&bw, (guint8 *) "LIST", 4); hdl &= gst_byte_writer_put_data (&bw, (guint8 *) "LIST", 4);
gst_byte_writer_put_uint32_le (&bw, avimux->data_size); hdl &= gst_byte_writer_put_uint32_le (&bw, avimux->data_size);
gst_byte_writer_put_data (&bw, (guint8 *) "movi", 4); hdl &= gst_byte_writer_put_data (&bw, (guint8 *) "movi", 4);
if (!hdl)
goto beach;
/* now get the data */ /* now get the data */
buffer = gst_byte_writer_reset_and_get_buffer (&bw); buffer = gst_byte_writer_reset_and_get_buffer (&bw);
@ -1364,6 +1371,7 @@ gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
GST_MEMDUMP_OBJECT (avimux, "avi header", map.data, map.size); GST_MEMDUMP_OBJECT (avimux, "avi header", map.data, map.size);
gst_buffer_unmap (buffer, &map); gst_buffer_unmap (buffer, &map);
beach:
return buffer; return buffer;
} }