gboolean
gst_gl_base_buffer_copy_buffer_sub_data (GstGLBaseBuffer * src,
GstGLBaseBuffer * dest, gssize offset, gssize size)
{
const GstGLFuncs *gl = src->context->gl_vtable;
GstMapInfo sinfo, dinfo;
if (!gl->CopyBufferSubData)
/* This is GL(ES) 3.0+ only */
return FALSE;
if (!gst_memory_map ((GstMemory *) src, &sinfo, GST_MAP_READ | GST_MAP_GL)) {
GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
"failed to read map source memory %p", src);
return FALSE;
}
if (!gst_memory_map ((GstMemory *) dest, &dinfo, GST_MAP_WRITE | GST_MAP_GL)) {
GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
"failed to write map destination memory %p", dest);
gst_memory_unmap ((GstMemory *) src, &sinfo);
return FALSE;
}
gl->BindBuffer (GL_COPY_READ_BUFFER, src->id);
gl->BindBuffer (GL_COPY_WRITE_BUFFER, dest->id);
gl->CopyBufferSubData (GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
offset, 0, size);
gst_memory_unmap ((GstMemory *) src, &sinfo);
gst_memory_unmap ((GstMemory *) dest, &dinfo);
return TRUE;
}
static GstMemory *
_fallback_mem_copy (GstMemory * mem, gssize offset, gssize size)
{
GstMemory *copy;
GstMapInfo sinfo, dinfo;
GstAllocationParams params = { 0, mem->align, 0, 0, };
GstAllocator *allocator;
if (!gst_memory_map (mem, &sinfo, GST_MAP_READ))
return NULL;
if (size == -1)
size = sinfo.size > offset ? sinfo.size - offset : 0;
/* use the same allocator as the memory we copy */
allocator = mem->allocator;
if (GST_OBJECT_FLAG_IS_SET (allocator, GST_ALLOCATOR_FLAG_CUSTOM_ALLOC))
allocator = NULL;
copy = gst_allocator_alloc (allocator, size, ¶ms);
if (!gst_memory_map (copy, &dinfo, GST_MAP_WRITE)) {
GST_CAT_WARNING (GST_CAT_MEMORY, "could not write map memory %p", copy);
gst_allocator_free (mem->allocator, copy);
gst_memory_unmap (mem, &sinfo);
return NULL;
}
GST_CAT_DEBUG (GST_CAT_PERFORMANCE,
"memcpy %" G_GSSIZE_FORMAT " memory %p -> %p", size, mem, copy);
memcpy (dinfo.data, sinfo.data + offset, size);
gst_memory_unmap (copy, &dinfo);
gst_memory_unmap (mem, &sinfo);
return copy;
}
/**
* gst_gl_base_memory_memcpy:
* @src: the source #GstGLBaseMemory
* @dest: the destination #GstGLBaseMemory
* @offset: the offset to start at
* @size: the number of bytes to copy
*
* Returns: whether the copy suceeded.
*/
gboolean
gst_gl_base_memory_memcpy (GstGLBaseMemory * src, GstGLBaseMemory * dest,
gssize offset, gssize size)
{
GstMapInfo sinfo, dinfo;
if (!gst_gl_base_memory_alloc_data (GST_GL_BASE_MEMORY_CAST (dest)))
return FALSE;
if (!gst_memory_map ((GstMemory *) src, &sinfo, GST_MAP_READ)) {
GST_CAT_WARNING (GST_CAT_GL_BASE_MEMORY,
"could not read map source memory %p", src);
return FALSE;
}
if (!gst_memory_map ((GstMemory *) dest, &dinfo, GST_MAP_WRITE)) {
GST_CAT_WARNING (GST_CAT_GL_BASE_MEMORY,
"could not write map dest memory %p", dest);
gst_memory_unmap ((GstMemory *) src, &sinfo);
return FALSE;
}
if (size == -1)
size = sinfo.size > offset ? sinfo.size - offset : 0;
GST_CAT_DEBUG (GST_CAT_GL_BASE_MEMORY,
"memcpy %" G_GSSIZE_FORMAT " memory %p -> %p", size, src, dest);
memcpy (dinfo.data, sinfo.data + offset, size);
gst_memory_unmap ((GstMemory *) dest, &dinfo);
gst_memory_unmap ((GstMemory *) src, &sinfo);
return TRUE;
}
/**
* gst_memory_make_mapped:
* @mem: (transfer full): a #GstMemory
* @info: (out): pointer for info
* @flags: mapping flags
*
* Create a #GstMemory object that is mapped with @flags. If @mem is mappable
* with @flags, this function returns the mapped @mem directly. Otherwise a
* mapped copy of @mem is returned.
*
* This function takes ownership of old @mem and returns a reference to a new
* #GstMemory.
*
* Returns: (transfer full) (nullable): a #GstMemory object mapped
* with @flags or %NULL when a mapping is not possible.
*/
GstMemory *
gst_memory_make_mapped (GstMemory * mem, GstMapInfo * info, GstMapFlags flags)
{
GstMemory *result;
if (gst_memory_map (mem, info, flags)) {
result = mem;
} else {
result = gst_memory_copy (mem, 0, -1);
gst_memory_unref (mem);
if (result == NULL)
goto cannot_copy;
if (!gst_memory_map (result, info, flags))
goto cannot_map;
}
return result;
/* ERRORS */
cannot_copy:
{
GST_CAT_DEBUG (GST_CAT_MEMORY, "cannot copy memory %p", mem);
return NULL;
}
cannot_map:
{
GST_CAT_DEBUG (GST_CAT_MEMORY, "cannot map memory %p with flags %d", mem,
flags);
gst_memory_unref (result);
return NULL;
}
}
gboolean
gst_gl_base_buffer_memcpy (GstGLBaseBuffer * src, GstGLBaseBuffer * dest,
gssize offset, gssize size)
{
GstMapInfo sinfo, dinfo;
if (!gst_memory_map ((GstMemory *) src, &sinfo, GST_MAP_READ)) {
GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
"could not read map source memory %p", src);
return FALSE;
}
if (!gst_memory_map ((GstMemory *) dest, &dinfo, GST_MAP_WRITE)) {
GST_CAT_WARNING (GST_CAT_GL_BASE_BUFFER,
"could not write map dest memory %p", dest);
gst_memory_unmap ((GstMemory *) src, &sinfo);
return FALSE;
}
GST_CAT_DEBUG (GST_CAT_GL_BASE_BUFFER,
"memcpy %" G_GSSIZE_FORMAT " memory %p -> %p", size, src, dest);
memcpy (dinfo.data, sinfo.data + offset, size);
gst_memory_unmap ((GstMemory *) dest, &dinfo);
gst_memory_unmap ((GstMemory *) src, &sinfo);
return TRUE;
}
GstFlowReturn on_new_preroll(GstAppSink *appsink, gpointer user_data) {
GstSample* sample = NULL;
GstBuffer* buffer;
GstMemory* memory;
GstMapInfo info;
GstClockTime clocktime;
g_debug("on_new_preroll ");
sample = gst_app_sink_pull_sample (appsink);
if (sample) {
g_debug("pulled sample\n");
buffer = gst_sample_get_buffer(sample);
clocktime = GST_BUFFER_PTS(buffer);
memory = gst_buffer_get_memory(buffer, 0);
gst_memory_map(memory, &info, GST_MAP_READ);
/*
You can access raw memory at info.data
*/
if(app.output_callback)
app.output_callback(info.data, info.size);
//fwrite(info.data, 1, info.size, app.outfile);
gst_memory_unmap(memory, &info);
gst_memory_unref(memory);
gst_sample_unref(sample);
}
return GST_FLOW_OK;
}
static void
user_write_data (png_structp png_ptr, png_bytep data, png_uint_32 length)
{
GstPngEnc *pngenc;
GstMemory *mem;
GstMapInfo minfo;
pngenc = (GstPngEnc *) png_get_io_ptr (png_ptr);
mem = gst_allocator_alloc (NULL, length, NULL);
if (!mem) {
GST_ERROR_OBJECT (pngenc, "Failed to allocate memory");
png_error (png_ptr, "Failed to allocate memory");
/* never reached */
return;
}
if (!gst_memory_map (mem, &minfo, GST_MAP_WRITE)) {
GST_ERROR_OBJECT (pngenc, "Failed to map memory");
gst_memory_unref (mem);
png_error (png_ptr, "Failed to map memory");
/* never reached */
return;
}
memcpy (minfo.data, data, length);
gst_memory_unmap (mem, &minfo);
gst_buffer_append_memory (pngenc->buffer_out, mem);
}
static gpointer
_gl_mem_map_gpu_access (GstGLMemoryPBO * gl_mem, GstMapInfo * info, gsize size)
{
gpointer data = &gl_mem->mem.tex_id;
if ((info->flags & GST_MAP_READ) == GST_MAP_READ) {
if (gl_mem->pbo && CONTEXT_SUPPORTS_PBO_UPLOAD (gl_mem->mem.mem.context)) {
GstMapInfo pbo_info;
/* data -> pbo */
if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), &pbo_info,
GST_MAP_READ | GST_MAP_GL)) {
GST_CAT_ERROR (GST_CAT_GL_MEMORY, "Failed to map pbo");
return NULL;
}
/* pbo -> texture */
_upload_pbo_memory (gl_mem, info, gl_mem->pbo, &pbo_info);
gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &pbo_info);
} else {
GstGLMemoryAllocatorClass *alloc_class;
alloc_class = GST_GL_MEMORY_ALLOCATOR_CLASS (parent_class);
data = alloc_class->map ((GstGLBaseMemory *) gl_mem, info, size);
}
}
return data;
}
void
groj_config_set_time(GstMemory *cmem, double time){
GstMapInfo info;
gst_memory_map (cmem, &info, GST_MAP_WRITE);
((struct RojConfig *)info.data)->time = time;
gst_memory_unmap (cmem, &info);
}
void
groj_config_set_number(GstMemory *cmem, unsigned long number){
GstMapInfo info;
gst_memory_map (cmem, &info, GST_MAP_WRITE);
((struct RojConfig *)info.data)->number = number;
gst_memory_unmap (cmem, &info);
}
static GstMemory *
_gl_mem_copy (GstGLMemoryPBO * src, gssize offset, gssize size)
{
GstAllocationParams params = { 0, GST_MEMORY_CAST (src)->align, 0, 0 };
GstGLBaseMemoryAllocator *base_mem_allocator;
GstAllocator *allocator;
GstMemory *dest = NULL;
allocator = GST_MEMORY_CAST (src)->allocator;
base_mem_allocator = (GstGLBaseMemoryAllocator *) allocator;
if (src->mem.tex_target == GST_GL_TEXTURE_TARGET_EXTERNAL_OES) {
GST_CAT_ERROR (GST_CAT_GL_MEMORY, "Cannot copy External OES textures");
return NULL;
}
/* If not doing a full copy, then copy to sysmem, the 2D represention of the
* texture would become wrong */
if (offset > 0 || size < GST_MEMORY_CAST (src)->size) {
return base_mem_allocator->fallback_mem_copy (GST_MEMORY_CAST (src), offset,
size);
}
dest = (GstMemory *) _gl_mem_new (allocator, NULL, src->mem.mem.context,
src->mem.tex_target, ¶ms, &src->mem.info, src->mem.plane,
&src->mem.valign, NULL, NULL);
if (GST_MEMORY_FLAG_IS_SET (src, GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD)) {
if (!gst_gl_base_memory_memcpy ((GstGLBaseMemory *) src,
(GstGLBaseMemory *) dest, offset, size)) {
GST_CAT_WARNING (GST_CAT_GL_MEMORY, "Could not copy GL Memory");
gst_memory_unref (GST_MEMORY_CAST (dest));
return NULL;
}
} else {
GstMapInfo dinfo;
if (!gst_memory_map (GST_MEMORY_CAST (dest), &dinfo,
GST_MAP_WRITE | GST_MAP_GL)) {
GST_CAT_WARNING (GST_CAT_GL_MEMORY,
"Failed not map destination " "for writing");
gst_memory_unref (GST_MEMORY_CAST (dest));
return NULL;
}
if (!gst_gl_memory_copy_into ((GstGLMemory *) src,
((GstGLMemory *) dest)->tex_id, src->mem.tex_target,
src->mem.tex_type, src->mem.tex_width, GL_MEM_HEIGHT (src))) {
GST_CAT_WARNING (GST_CAT_GL_MEMORY, "Could not copy GL Memory");
gst_memory_unmap (GST_MEMORY_CAST (dest), &dinfo);
gst_memory_unref (GST_MEMORY_CAST (dest));
return NULL;
}
gst_memory_unmap (GST_MEMORY_CAST (dest), &dinfo);
}
return dest;
}
double
groj_config_get_time(GstMemory *cmem)
{
GstMapInfo info;
gst_memory_map (cmem, &info, GST_MAP_READ);
double time = ((struct RojConfig *)info.data)->time;
gst_memory_unmap (cmem, &info);
return time;
}
unsigned long
groj_config_get_number(GstMemory *cmem)
{
GstMapInfo info;
gst_memory_map (cmem, &info, GST_MAP_READ);
unsigned long number = ((struct RojConfig *)info.data)->number;
gst_memory_unmap (cmem, &info);
return number;
}
static gpointer
_pbo_download_transfer (GstGLMemoryPBO * gl_mem, GstMapInfo * info, gsize size)
{
GstMapInfo *pbo_info;
gl_mem->pbo->target = GL_PIXEL_PACK_BUFFER;
/* texture -> pbo */
if (info->flags & GST_MAP_READ
&& GST_MEMORY_FLAG_IS_SET (gl_mem,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD)) {
GstMapInfo info;
GST_CAT_TRACE (GST_CAT_GL_MEMORY,
"attempting download of texture %u " "using pbo %u", gl_mem->mem.tex_id,
gl_mem->pbo->id);
if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), &info,
GST_MAP_WRITE | GST_MAP_GL)) {
GST_CAT_WARNING (GST_CAT_GL_MEMORY, "Failed to write to PBO");
return NULL;
}
if (!_read_pixels_to_pbo (gl_mem)) {
gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &info);
return NULL;
}
gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &info);
}
pbo_info = g_new0 (GstMapInfo, 1);
/* pbo -> data */
/* get a cpu accessible mapping from the pbo */
if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), pbo_info, info->flags)) {
GST_CAT_ERROR (GST_CAT_GL_MEMORY, "Failed to map pbo");
g_free (pbo_info);
return NULL;
}
info->user_data[0] = pbo_info;
return pbo_info->data;
}
static CMBlockBufferRef
cm_block_buffer_from_gst_buffer (GstBuffer * buf, GstMapFlags flags)
{
OSStatus status;
CMBlockBufferRef bbuf;
CMBlockBufferCustomBlockSource blockSource;
guint memcount, i;
/* Initialize custom block source structure */
blockSource.version = kCMBlockBufferCustomBlockSourceVersion;
blockSource.AllocateBlock = NULL;
blockSource.FreeBlock = cm_block_buffer_freeblock;
/* Determine number of memory blocks */
memcount = gst_buffer_n_memory (buf);
status = CMBlockBufferCreateEmpty (NULL, memcount, 0, &bbuf);
if (status != kCMBlockBufferNoErr) {
GST_ERROR ("CMBlockBufferCreateEmpty returned %d", (int) status);
return NULL;
}
/* Go over all GstMemory objects and add them to the CMBlockBuffer */
for (i = 0; i < memcount; ++i) {
GstMemory *mem;
GstMapInfo *info;
mem = gst_buffer_get_memory (buf, i);
info = g_slice_new (GstMapInfo);
if (!gst_memory_map (mem, info, flags)) {
GST_ERROR ("failed mapping memory");
g_slice_free (GstMapInfo, info);
gst_memory_unref (mem);
CFRelease (bbuf);
return NULL;
}
blockSource.refCon = info;
status =
CMBlockBufferAppendMemoryBlock (bbuf, info->data, info->size, NULL,
&blockSource, 0, info->size, 0);
if (status != kCMBlockBufferNoErr) {
GST_ERROR ("CMBlockBufferAppendMemoryBlock returned %d", (int) status);
gst_memory_unmap (mem, info);
g_slice_free (GstMapInfo, info);
gst_memory_unref (mem);
CFRelease (bbuf);
return NULL;
}
}
return bbuf;
}
static GstMemory *
gst_wl_shm_allocator_alloc (GstAllocator * allocator, gsize size,
GstAllocationParams * params)
{
GstWlShmAllocator *self = GST_WL_SHM_ALLOCATOR (allocator);
char filename[1024];
static int init = 0;
int fd;
GstMemory *mem;
GstMapInfo info;
/* TODO: make use of the allocation params, if necessary */
/* allocate shm pool */
snprintf (filename, 1024, "%s/%s-%d-%s", g_get_user_runtime_dir (),
"wayland-shm", init++, "XXXXXX");
fd = g_mkstemp (filename);
if (fd < 0) {
GST_ERROR_OBJECT (self, "opening temp file %s failed: %s", filename,
strerror (errno));
return NULL;
}
if (ftruncate (fd, size) < 0) {
GST_ERROR_OBJECT (self, "ftruncate failed: %s", strerror (errno));
close (fd);
return NULL;
}
mem = gst_fd_allocator_alloc (allocator, fd, size,
GST_FD_MEMORY_FLAG_KEEP_MAPPED);
if (G_UNLIKELY (!mem)) {
GST_ERROR_OBJECT (self, "GstFdMemory allocation failed");
close (fd);
return NULL;
}
/* we need to map the memory in order to unlink the file without losing it */
if (!gst_memory_map (mem, &info, GST_MAP_READWRITE)) {
GST_ERROR_OBJECT (self, "GstFdMemory map failed");
close (fd);
return NULL;
}
/* unmap will not really munmap(), we just
* need it to release the miniobject lock */
gst_memory_unmap (mem, &info);
unlink (filename);
return mem;
}
static gboolean
gst_udpsrc_alloc_mem (GstUDPSrc * src, GstMemory ** p_mem, GstMapInfo * map,
gsize size)
{
GstMemory *mem;
mem = gst_allocator_alloc (src->allocator, size, &src->params);
if (!gst_memory_map (mem, map, GST_MAP_WRITE)) {
gst_memory_unref (mem);
memset (map, 0, sizeof (GstMapInfo));
return FALSE;
}
*p_mem = mem;
return TRUE;
}
static void
_upload_transfer (GstGLContext * context, GstGLMemoryPBO * gl_mem)
{
GstGLBaseMemory *mem = (GstGLBaseMemory *) gl_mem;
GstMapInfo info;
g_mutex_lock (&mem->lock);
gl_mem->pbo->target = GL_PIXEL_UNPACK_BUFFER;
if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), &info,
GST_MAP_READ | GST_MAP_GL)) {
GST_CAT_WARNING (GST_CAT_GL_MEMORY, "Failed to map pbo for reading");
} else {
gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &info);
}
g_mutex_unlock (&mem->lock);
}
static gboolean
_do_download (GstGLDownload * download, guint texture_id,
gpointer data[GST_VIDEO_MAX_PLANES])
{
guint out_width, out_height;
GstBuffer *inbuf, *outbuf;
GstMapInfo map_info;
gboolean ret = TRUE;
gint i;
out_width = GST_VIDEO_INFO_WIDTH (&download->info);
out_height = GST_VIDEO_INFO_HEIGHT (&download->info);
if (!download->initted) {
if (!_init_download (download))
return FALSE;
}
GST_TRACE ("doing download of texture:%u (%ux%u)",
download->priv->in_tex[0]->tex_id, out_width, out_height);
inbuf = gst_buffer_new ();
gst_buffer_append_memory (inbuf,
gst_memory_ref ((GstMemory *) download->priv->in_tex[0]));
outbuf = gst_gl_color_convert_perform (download->convert, inbuf);
if (!outbuf)
return FALSE;
for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&download->info); i++) {
GstMemory *out_mem = gst_buffer_peek_memory (outbuf, i);
gpointer temp_data = ((GstGLMemory *) out_mem)->data;
((GstGLMemory *) out_mem)->data = data[i];
if (!gst_memory_map (out_mem, &map_info, GST_MAP_READ)) {
GST_ERROR_OBJECT (download, "Failed to map memory");
ret = FALSE;
}
gst_memory_unmap (out_mem, &map_info);
((GstGLMemory *) out_mem)->data = temp_data;
}
gst_buffer_unref (inbuf);
gst_buffer_unref (outbuf);
return ret;
}
void GStreamerReader::CopyIntoImageBuffer(GstBuffer* aBuffer,
GstBuffer** aOutBuffer,
nsRefPtr<PlanarYCbCrImage> &image)
{
*aOutBuffer = gst_buffer_new_allocate(mAllocator, gst_buffer_get_size(aBuffer), nullptr);
GstMemory *mem = gst_buffer_peek_memory(*aOutBuffer, 0);
GstMapInfo map_info;
gst_memory_map(mem, &map_info, GST_MAP_WRITE);
gst_buffer_extract(aBuffer, 0, map_info.data, gst_buffer_get_size(aBuffer));
gst_memory_unmap(mem, &map_info);
/* create a new gst buffer with the newly created memory and copy the
* metadata over from the incoming buffer */
gst_buffer_copy_into(*aOutBuffer, aBuffer,
(GstBufferCopyFlags)(GST_BUFFER_COPY_METADATA), 0, -1);
image = GetImageFromBuffer(*aOutBuffer);
}
static gboolean
_read_pixels_to_pbo (GstGLMemoryPBO * gl_mem)
{
if (!gl_mem->pbo || !CONTEXT_SUPPORTS_PBO_DOWNLOAD (gl_mem->mem.mem.context)
|| gl_mem->mem.tex_type == GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE
|| gl_mem->mem.tex_type == GST_VIDEO_GL_TEXTURE_TYPE_LUMINANCE_ALPHA)
/* unsupported */
return FALSE;
if (GST_MEMORY_FLAG_IS_SET (gl_mem,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD)) {
/* copy texture data into into the pbo and map that */
gsize plane_start;
GstMapInfo pbo_info;
plane_start =
gst_gl_get_plane_start (&gl_mem->mem.info, &gl_mem->mem.valign,
gl_mem->mem.plane) + GST_MEMORY_CAST (gl_mem)->offset;
gl_mem->pbo->target = GL_PIXEL_PACK_BUFFER;
if (!gst_memory_map (GST_MEMORY_CAST (gl_mem->pbo), &pbo_info,
GST_MAP_WRITE | GST_MAP_GL)) {
GST_CAT_ERROR (GST_CAT_GL_MEMORY, "Failed to map pbo for writing");
return FALSE;
}
if (!gst_gl_memory_read_pixels ((GstGLMemory *) gl_mem,
(gpointer) plane_start)) {
gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &pbo_info);
return FALSE;
}
gst_memory_unmap (GST_MEMORY_CAST (gl_mem->pbo), &pbo_info);
}
return TRUE;
}
static gsize
fill_vectors (struct iovec *vecs, GstMapInfo * maps, guint n, GstBuffer * buf)
{
GstMemory *mem;
gsize size = 0;
guint i;
g_assert (gst_buffer_n_memory (buf) == n);
for (i = 0; i < n; ++i) {
mem = gst_buffer_peek_memory (buf, i);
if (gst_memory_map (mem, &maps[i], GST_MAP_READ)) {
vecs[i].iov_base = maps[i].data;
vecs[i].iov_len = maps[i].size;
} else {
GST_WARNING ("Failed to map memory %p for reading", mem);
vecs[i].iov_base = (void *) "";
vecs[i].iov_len = 0;
}
size += vecs[i].iov_len;
}
return size;
}
GstMapInfo *
gstsharp_memory_get_info(GstMemory *memory, GstMapFlags flags){
GstMapInfo info = {0};
gst_memory_map(memory,&info,flags);
return &info;
}
/* Copy fixed header and extension. Replace current ssrc by ssrc1,
* remove OSN and replace current seq num by OSN.
* Copy memory to avoid to manually copy each rtp buffer field.
*/
static GstBuffer *
_gst_rtp_buffer_new_from_rtx (GstRTPBuffer * rtp, guint32 ssrc1,
guint16 orign_seqnum, guint8 origin_payload_type)
{
GstMemory *mem = NULL;
GstRTPBuffer new_rtp = GST_RTP_BUFFER_INIT;
GstBuffer *new_buffer = gst_buffer_new ();
GstMapInfo map;
guint payload_len = 0;
/* copy fixed header */
mem = gst_memory_copy (rtp->map[0].memory,
(guint8 *) rtp->data[0] - rtp->map[0].data, rtp->size[0]);
gst_buffer_append_memory (new_buffer, mem);
/* copy extension if any */
if (rtp->size[1]) {
mem = gst_memory_copy (rtp->map[1].memory,
(guint8 *) rtp->data[1] - rtp->map[1].data, rtp->size[1]);
gst_buffer_append_memory (new_buffer, mem);
}
/* copy payload and remove OSN */
payload_len = rtp->size[2] - 2;
mem = gst_allocator_alloc (NULL, payload_len, NULL);
gst_memory_map (mem, &map, GST_MAP_WRITE);
if (rtp->size[2])
memcpy (map.data, (guint8 *) rtp->data[2] + 2, payload_len);
gst_memory_unmap (mem, &map);
gst_buffer_append_memory (new_buffer, mem);
/* the sender always constructs rtx packets without padding,
* But the receiver can still receive rtx packets with padding.
* So just copy it.
*/
if (rtp->size[3]) {
guint pad_len = rtp->size[3];
mem = gst_allocator_alloc (NULL, pad_len, NULL);
gst_memory_map (mem, &map, GST_MAP_WRITE);
map.data[pad_len - 1] = pad_len;
gst_memory_unmap (mem, &map);
gst_buffer_append_memory (new_buffer, mem);
}
/* set ssrc and seq num */
gst_rtp_buffer_map (new_buffer, GST_MAP_WRITE, &new_rtp);
gst_rtp_buffer_set_ssrc (&new_rtp, ssrc1);
gst_rtp_buffer_set_seq (&new_rtp, orign_seqnum);
gst_rtp_buffer_set_payload_type (&new_rtp, origin_payload_type);
gst_rtp_buffer_unmap (&new_rtp);
gst_buffer_copy_into (new_buffer, rtp->buffer,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS, 0, -1);
GST_BUFFER_FLAG_SET (new_buffer, GST_RTP_BUFFER_FLAG_RETRANSMISSION);
return new_buffer;
}
static void
test_transfer_allocator (const gchar * allocator_name)
{
GstAllocator *gl_allocator;
GstGLBaseMemoryAllocator *base_mem_alloc;
GstVideoInfo v_info;
GstMemory *mem, *mem2, *mem3;
GstMapInfo map_info;
GstGLVideoAllocationParams *params;
gl_allocator = gst_allocator_find (allocator_name);
fail_if (gl_allocator == NULL);
base_mem_alloc = GST_GL_BASE_MEMORY_ALLOCATOR (gl_allocator);
gst_video_info_set_format (&v_info, GST_VIDEO_FORMAT_RGBA, 1, 1);
params = gst_gl_video_allocation_params_new (context, NULL, &v_info, 0,
NULL, GST_GL_TEXTURE_TARGET_2D, GST_VIDEO_GL_TEXTURE_TYPE_RGBA);
/* texture creation */
mem = (GstMemory *) gst_gl_base_memory_alloc (base_mem_alloc,
(GstGLAllocationParams *) params);
gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem,
GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));
/* test wrapping raw data */
params = gst_gl_video_allocation_params_new_wrapped_data (context, NULL,
&v_info, 0, NULL, GST_GL_TEXTURE_TARGET_2D,
GST_VIDEO_GL_TEXTURE_TYPE_RGBA, rgba_pixel, NULL, NULL);
mem2 =
(GstMemory *) gst_gl_base_memory_alloc (base_mem_alloc,
(GstGLAllocationParams *) params);
gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
fail_if (mem == NULL);
fail_unless (GST_MEMORY_FLAG_IS_SET (mem2,
GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));
/* wrapped texture creation */
params = gst_gl_video_allocation_params_new_wrapped_texture (context, NULL,
&v_info, 0, NULL, GST_GL_TEXTURE_TARGET_2D,
GST_VIDEO_GL_TEXTURE_TYPE_RGBA, ((GstGLMemory *) mem)->tex_id, NULL,
NULL);
mem3 =
(GstMemory *) gst_gl_base_memory_alloc (base_mem_alloc,
(GstGLAllocationParams *) params);
gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem3,
GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
fail_unless (GST_MEMORY_FLAG_IS_SET (mem3,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));
/* check data/flags are correct */
fail_unless (gst_memory_map (mem2, &map_info, GST_MAP_READ));
fail_unless (GST_MEMORY_FLAG_IS_SET (mem2,
GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));
fail_unless (memcmp (map_info.data, rgba_pixel,
G_N_ELEMENTS (rgba_pixel)) == 0,
"0x%02x%02x%02x%02x != 0x%02x%02x%02x%02x", map_info.data[0],
map_info.data[1], map_info.data[2], map_info.data[3],
(guint8) rgba_pixel[0], (guint8) rgba_pixel[1], (guint8) rgba_pixel[2],
(guint8) rgba_pixel[3]);
gst_memory_unmap (mem2, &map_info);
fail_unless (GST_MEMORY_FLAG_IS_SET (mem2,
GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));
fail_unless (gst_memory_map (mem2, &map_info, GST_MAP_READ | GST_MAP_GL));
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));
/* test texture copy */
fail_unless (gst_gl_memory_copy_into ((GstGLMemory *) mem2,
((GstGLMemory *) mem)->tex_id, GST_GL_TEXTURE_TARGET_2D,
GST_VIDEO_GL_TEXTURE_TYPE_RGBA, 1, 1));
GST_MINI_OBJECT_FLAG_SET (mem, GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD);
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem2,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem,
GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
fail_unless (GST_MEMORY_FLAG_IS_SET (mem,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));
gst_memory_unmap (mem2, &map_info);
/* test download of copied texture */
fail_unless (gst_memory_map (mem, &map_info, GST_MAP_READ));
fail_unless (memcmp (map_info.data, rgba_pixel,
G_N_ELEMENTS (rgba_pixel)) == 0,
"0x%02x%02x%02x%02x != 0x%02x%02x%02x%02x", (guint8) map_info.data[0],
(guint8) map_info.data[1], (guint8) map_info.data[2],
(guint8) map_info.data[3], (guint8) rgba_pixel[0], (guint8) rgba_pixel[1],
(guint8) rgba_pixel[2], (guint8) rgba_pixel[3]);
gst_memory_unmap (mem, &map_info);
/* test download of wrapped copied texture */
fail_unless (gst_memory_map (mem3, &map_info, GST_MAP_READ));
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem,
GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));
fail_unless (memcmp (map_info.data, rgba_pixel,
G_N_ELEMENTS (rgba_pixel)) == 0,
"0x%02x%02x%02x%02x != 0x%02x%02x%02x%02x", (guint8) map_info.data[0],
(guint8) map_info.data[1], (guint8) map_info.data[2],
(guint8) map_info.data[3], (guint8) rgba_pixel[0], (guint8) rgba_pixel[1],
(guint8) rgba_pixel[2], (guint8) rgba_pixel[3]);
gst_memory_unmap (mem3, &map_info);
/* test upload flag */
fail_unless (gst_memory_map (mem3, &map_info, GST_MAP_WRITE));
gst_memory_unmap (mem3, &map_info);
fail_unless (GST_MEMORY_FLAG_IS_SET (mem3,
GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem3,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));
/* test download flag */
fail_unless (gst_memory_map (mem3, &map_info, GST_MAP_WRITE | GST_MAP_GL));
gst_memory_unmap (mem3, &map_info);
fail_unless (!GST_MEMORY_FLAG_IS_SET (mem3,
GST_GL_BASE_MEMORY_TRANSFER_NEED_UPLOAD));
fail_unless (GST_MEMORY_FLAG_IS_SET (mem3,
GST_GL_BASE_MEMORY_TRANSFER_NEED_DOWNLOAD));
gst_memory_unref (mem);
gst_memory_unref (mem2);
gst_memory_unref (mem3);
gst_object_unref (gl_allocator);
}
static GstFlowReturn
gst_openjpeg_enc_handle_frame (GstVideoEncoder * encoder,
GstVideoCodecFrame * frame)
{
GstOpenJPEGEnc *self = GST_OPENJPEG_ENC (encoder);
GstFlowReturn ret = GST_FLOW_OK;
#ifdef HAVE_OPENJPEG_1
opj_cinfo_t *enc;
GstMapInfo map;
guint length;
opj_cio_t *io;
#else
opj_codec_t *enc;
opj_stream_t *stream;
MemStream mstream;
#endif
opj_image_t *image;
GstVideoFrame vframe;
GST_DEBUG_OBJECT (self, "Handling frame");
enc = opj_create_compress (self->codec_format);
if (!enc)
goto initialization_error;
#ifdef HAVE_OPENJPEG_1
if (G_UNLIKELY (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >=
GST_LEVEL_TRACE)) {
opj_event_mgr_t callbacks;
callbacks.error_handler = gst_openjpeg_enc_opj_error;
callbacks.warning_handler = gst_openjpeg_enc_opj_warning;
callbacks.info_handler = gst_openjpeg_enc_opj_info;
opj_set_event_mgr ((opj_common_ptr) enc, &callbacks, self);
} else {
opj_set_event_mgr ((opj_common_ptr) enc, NULL, NULL);
}
#else
if (G_UNLIKELY (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >=
GST_LEVEL_TRACE)) {
opj_set_info_handler (enc, gst_openjpeg_enc_opj_info, self);
opj_set_warning_handler (enc, gst_openjpeg_enc_opj_warning, self);
opj_set_error_handler (enc, gst_openjpeg_enc_opj_error, self);
} else {
opj_set_info_handler (enc, NULL, NULL);
opj_set_warning_handler (enc, NULL, NULL);
opj_set_error_handler (enc, NULL, NULL);
}
#endif
if (!gst_video_frame_map (&vframe, &self->input_state->info,
frame->input_buffer, GST_MAP_READ))
goto map_read_error;
image = gst_openjpeg_enc_fill_image (self, &vframe);
if (!image)
goto fill_image_error;
gst_video_frame_unmap (&vframe);
opj_setup_encoder (enc, &self->params, image);
#ifdef HAVE_OPENJPEG_1
io = opj_cio_open ((opj_common_ptr) enc, NULL, 0);
if (!io)
goto open_error;
if (!opj_encode (enc, io, image, NULL))
goto encode_error;
opj_image_destroy (image);
length = cio_tell (io);
ret =
gst_video_encoder_allocate_output_frame (encoder, frame,
length + (self->is_jp2c ? 8 : 0));
if (ret != GST_FLOW_OK)
goto allocate_error;
gst_buffer_fill (frame->output_buffer, self->is_jp2c ? 8 : 0, io->buffer,
length);
if (self->is_jp2c) {
gst_buffer_map (frame->output_buffer, &map, GST_MAP_WRITE);
GST_WRITE_UINT32_BE (map.data, length + 8);
GST_WRITE_UINT32_BE (map.data + 4, GST_MAKE_FOURCC ('j', 'p', '2', 'c'));
gst_buffer_unmap (frame->output_buffer, &map);
}
opj_cio_close (io);
opj_destroy_compress (enc);
#else
stream = opj_stream_create (4096, OPJ_FALSE);
if (!stream)
goto open_error;
mstream.allocsize = 4096;
mstream.data = g_malloc (mstream.allocsize);
mstream.offset = 0;
mstream.size = 0;
opj_stream_set_read_function (stream, read_fn);
opj_stream_set_write_function (stream, write_fn);
opj_stream_set_skip_function (stream, skip_fn);
opj_stream_set_seek_function (stream, seek_fn);
opj_stream_set_user_data (stream, &mstream);
opj_stream_set_user_data_length (stream, mstream.size);
if (!opj_start_compress (enc, image, stream))
goto encode_error;
if (!opj_encode (enc, stream))
goto encode_error;
if (!opj_end_compress (enc, stream))
goto encode_error;
opj_image_destroy (image);
opj_stream_destroy (stream);
opj_destroy_codec (enc);
frame->output_buffer = gst_buffer_new ();
if (self->is_jp2c) {
GstMapInfo map;
GstMemory *mem;
mem = gst_allocator_alloc (NULL, 8, NULL);
gst_memory_map (mem, &map, GST_MAP_WRITE);
GST_WRITE_UINT32_BE (map.data, mstream.size + 8);
GST_WRITE_UINT32_BE (map.data + 4, GST_MAKE_FOURCC ('j', 'p', '2', 'c'));
gst_memory_unmap (mem, &map);
gst_buffer_append_memory (frame->output_buffer, mem);
}
gst_buffer_append_memory (frame->output_buffer,
gst_memory_new_wrapped (0, mstream.data, mstream.allocsize, 0,
mstream.size, NULL, (GDestroyNotify) g_free));
#endif
ret = gst_video_encoder_finish_frame (encoder, frame);
return ret;
initialization_error:
{
gst_video_codec_frame_unref (frame);
GST_ELEMENT_ERROR (self, LIBRARY, INIT,
("Failed to initialize OpenJPEG encoder"), (NULL));
return GST_FLOW_ERROR;
}
map_read_error:
{
#ifdef HAVE_OPENJPEG_1
opj_destroy_compress (enc);
#else
opj_destroy_codec (enc);
#endif
gst_video_codec_frame_unref (frame);
GST_ELEMENT_ERROR (self, CORE, FAILED,
("Failed to map input buffer"), (NULL));
return GST_FLOW_ERROR;
}
fill_image_error:
{
#ifdef HAVE_OPENJPEG_1
opj_destroy_compress (enc);
#else
opj_destroy_codec (enc);
#endif
gst_video_frame_unmap (&vframe);
gst_video_codec_frame_unref (frame);
GST_ELEMENT_ERROR (self, LIBRARY, INIT,
("Failed to fill OpenJPEG image"), (NULL));
return GST_FLOW_ERROR;
}
open_error:
{
opj_image_destroy (image);
#ifdef HAVE_OPENJPEG_1
opj_destroy_compress (enc);
#else
opj_destroy_codec (enc);
#endif
gst_video_codec_frame_unref (frame);
GST_ELEMENT_ERROR (self, LIBRARY, INIT,
("Failed to open OpenJPEG data"), (NULL));
return GST_FLOW_ERROR;
}
encode_error:
{
#ifdef HAVE_OPENJPEG_1
opj_cio_close (io);
opj_image_destroy (image);
opj_destroy_compress (enc);
#else
opj_stream_destroy (stream);
g_free (mstream.data);
opj_image_destroy (image);
opj_destroy_codec (enc);
#endif
gst_video_codec_frame_unref (frame);
GST_ELEMENT_ERROR (self, STREAM, ENCODE,
("Failed to encode OpenJPEG stream"), (NULL));
return GST_FLOW_ERROR;
}
#ifdef HAVE_OPENJPEG_1
allocate_error:
{
opj_cio_close (io);
opj_destroy_compress (enc);
gst_video_codec_frame_unref (frame);
GST_ELEMENT_ERROR (self, CORE, FAILED,
("Failed to allocate output buffer"), (NULL));
return ret;
}
#endif
}
static GstFlowReturn
gst_multiudpsink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstMultiUDPSink *sink;
GList *clients;
GOutputVector *vec;
GstMapInfo *map;
guint n_mem, i;
gsize size;
GstMemory *mem;
gint num, no_clients;
GError *err = NULL;
sink = GST_MULTIUDPSINK (bsink);
n_mem = gst_buffer_n_memory (buffer);
if (n_mem == 0)
goto no_data;
/* allocated on the stack, the max number of memory blocks is limited so this
* should not cause stack overflows */
vec = sink->vec;
map = sink->map;
size = 0;
for (i = 0; i < n_mem; i++) {
mem = gst_buffer_get_memory (buffer, i);
gst_memory_map (mem, &map[i], GST_MAP_READ);
vec[i].buffer = map[i].data;
vec[i].size = map[i].size;
size += map[i].size;
}
sink->bytes_to_serve += size;
/* grab lock while iterating and sending to clients, this should be
* fast as UDP never blocks */
g_mutex_lock (&sink->client_lock);
GST_LOG_OBJECT (bsink, "about to send %" G_GSIZE_FORMAT " bytes in %u blocks",
size, n_mem);
no_clients = 0;
num = 0;
for (clients = sink->clients; clients; clients = g_list_next (clients)) {
GstUDPClient *client;
GSocket *socket;
GSocketFamily family;
gint count;
client = (GstUDPClient *) clients->data;
no_clients++;
GST_LOG_OBJECT (sink, "sending %" G_GSIZE_FORMAT " bytes to client %p",
size, client);
family = g_socket_address_get_family (G_SOCKET_ADDRESS (client->addr));
/* Select socket to send from for this address */
if (family == G_SOCKET_FAMILY_IPV6 || !sink->used_socket)
socket = sink->used_socket_v6;
else
socket = sink->used_socket;
count = sink->send_duplicates ? client->refcount : 1;
while (count--) {
gssize ret;
ret =
g_socket_send_message (socket, client->addr, vec, n_mem,
NULL, 0, 0, sink->cancellable, &err);
if (G_UNLIKELY (ret < 0)) {
if (g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED))
goto flushing;
/* we continue after posting a warning, next packets might be ok
* again */
if (size > UDP_MAX_SIZE) {
GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
("Attempting to send a UDP packet larger than maximum size "
"(%" G_GSIZE_FORMAT " > %d)", size, UDP_MAX_SIZE),
("Reason: %s", err ? err->message : "unknown reason"));
} else {
GST_ELEMENT_WARNING (sink, RESOURCE, WRITE,
("Error sending UDP packet"), ("Reason: %s",
err ? err->message : "unknown reason"));
}
g_clear_error (&err);
} else {
num++;
client->bytes_sent += ret;
client->packets_sent++;
sink->bytes_served += ret;
}
}
}
g_mutex_unlock (&sink->client_lock);
/* unmap all memory again */
for (i = 0; i < n_mem; i++) {
gst_memory_unmap (map[i].memory, &map[i]);
gst_memory_unref (map[i].memory);
}
GST_LOG_OBJECT (sink, "sent %" G_GSIZE_FORMAT " bytes to %d (of %d) clients",
size, num, no_clients);
return GST_FLOW_OK;
no_data:
{
return GST_FLOW_OK;
}
flushing:
{
GST_DEBUG ("we are flushing");
g_mutex_unlock (&sink->client_lock);
g_clear_error (&err);
/* unmap all memory */
for (i = 0; i < n_mem; i++) {
gst_memory_unmap (map[i].memory, &map[i]);
gst_memory_unref (map[i].memory);
}
return GST_FLOW_FLUSHING;
}
}
gboolean
_gst_playbin_get_current_frame (GstElement *playbin,
int video_fps_n,
int video_fps_d,
FrameReadyCallback cb,
gpointer user_data)
{
ScreenshotData *data;
GstCaps *to_caps;
GstSample *sample;
GstCaps *sample_caps;
GstStructure *s;
int outwidth;
int outheight;
data = g_new0 (ScreenshotData, 1);
data->cb = cb;
data->user_data = user_data;
/* our desired output format (RGB24) */
to_caps = gst_caps_new_simple ("video/x-raw",
"format", G_TYPE_STRING, "RGB",
/* Note: we don't ask for a specific width/height here, so that
* videoscale can adjust dimensions from a non-1/1 pixel aspect
* ratio to a 1/1 pixel-aspect-ratio. We also don't ask for a
* specific framerate, because the input framerate won't
* necessarily match the output framerate if there's a deinterlacer
* in the pipeline. */
"pixel-aspect-ratio", GST_TYPE_FRACTION, 1, 1,
NULL);
/* get frame */
sample = NULL;
g_signal_emit_by_name (playbin, "convert-sample", to_caps, &sample);
gst_caps_unref (to_caps);
if (sample == NULL) {
g_warning ("Could not take screenshot: %s", "failed to retrieve or convert video frame");
screenshot_data_finalize (data);
return FALSE;
}
sample_caps = gst_sample_get_caps (sample);
if (sample_caps == NULL) {
g_warning ("Could not take screenshot: %s", "no caps on output buffer");
return FALSE;
}
s = gst_caps_get_structure (sample_caps, 0);
gst_structure_get_int (s, "width", &outwidth);
gst_structure_get_int (s, "height", &outheight);
if ((outwidth > 0) && (outheight > 0)) {
GstMemory *memory;
GstMapInfo info;
memory = gst_buffer_get_memory (gst_sample_get_buffer (sample), 0);
gst_memory_map (memory, &info, GST_MAP_READ);
data->pixbuf = gdk_pixbuf_new_from_data (info.data,
GDK_COLORSPACE_RGB,
FALSE,
8,
outwidth,
outheight,
GST_ROUND_UP_4 (outwidth * 3),
destroy_pixbuf,
sample);
gst_memory_unmap (memory, &info);
}
if (data->pixbuf == NULL)
g_warning ("Could not take screenshot: %s", "could not create pixbuf");
screenshot_data_finalize (data);
return TRUE;
}
static GstFlowReturn
gst_shm_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
GstShmSink *self = GST_SHM_SINK (bsink);
int rv = 0;
GstMapInfo map;
gboolean need_new_memory = FALSE;
GstFlowReturn ret = GST_FLOW_OK;
GstMemory *memory = NULL;
GstBuffer *sendbuf = NULL;
gsize written_bytes;
GST_OBJECT_LOCK (self);
while (self->wait_for_connection && !self->clients) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
ret = gst_base_sink_wait_preroll (bsink);
if (ret == GST_FLOW_OK)
GST_OBJECT_LOCK (self);
else
return ret;
}
}
while (!gst_shm_sink_can_render (self, GST_BUFFER_TIMESTAMP (buf))) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
ret = gst_base_sink_wait_preroll (bsink);
if (ret == GST_FLOW_OK)
GST_OBJECT_LOCK (self);
else
return ret;
}
}
if (gst_buffer_n_memory (buf) > 1) {
GST_LOG_OBJECT (self, "Buffer %p has %d GstMemory, we only support a single"
" one, need to do a memcpy", buf, gst_buffer_n_memory (buf));
need_new_memory = TRUE;
} else {
memory = gst_buffer_peek_memory (buf, 0);
if (memory->allocator != GST_ALLOCATOR (self->allocator)) {
need_new_memory = TRUE;
GST_LOG_OBJECT (self, "Memory in buffer %p was not allocated by "
"%" GST_PTR_FORMAT ", will memcpy", buf, memory->allocator);
}
}
if (need_new_memory) {
if (gst_buffer_get_size (buf) > sp_writer_get_max_buf_size (self->pipe)) {
gsize area_size = sp_writer_get_max_buf_size (self->pipe);
GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT, (NULL),
("Shared memory area of size %" G_GSIZE_FORMAT " is smaller than"
"buffer of size %" G_GSIZE_FORMAT, area_size,
gst_buffer_get_size (buf)));
goto error;
}
while ((memory =
gst_shm_sink_allocator_alloc_locked (self->allocator,
gst_buffer_get_size (buf), &self->params)) == NULL) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
ret = gst_base_sink_wait_preroll (bsink);
if (ret == GST_FLOW_OK)
GST_OBJECT_LOCK (self);
else
return ret;
}
}
while (self->wait_for_connection && !self->clients) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
GST_OBJECT_UNLOCK (self);
ret = gst_base_sink_wait_preroll (bsink);
if (ret == GST_FLOW_OK) {
GST_OBJECT_LOCK (self);
} else {
gst_memory_unref (memory);
return ret;
}
}
}
if (!gst_memory_map (memory, &map, GST_MAP_WRITE)) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to map memory"));
goto error;
}
GST_DEBUG_OBJECT (self,
"Copying %" G_GSIZE_FORMAT " bytes into map of size %" G_GSIZE_FORMAT
" bytes.", gst_buffer_get_size (buf), map.size);
written_bytes = gst_buffer_extract (buf, 0, map.data, map.size);
GST_DEBUG_OBJECT (self, "Copied %" G_GSIZE_FORMAT " bytes.", written_bytes);
gst_memory_unmap (memory, &map);
sendbuf = gst_buffer_new ();
if (!gst_buffer_copy_into (sendbuf, buf, GST_BUFFER_COPY_METADATA, 0, -1)) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to copy data into send buffer"));
gst_buffer_unref (sendbuf);
goto error;
}
gst_buffer_append_memory (sendbuf, memory);
} else {
sendbuf = gst_buffer_ref (buf);
}
if (!gst_buffer_map (sendbuf, &map, GST_MAP_READ)) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to map data into send buffer"));
goto error;
}
/* Make the memory readonly as of now as we've sent it to the other side
* We know it's not mapped for writing anywhere as we just mapped it for
* reading
*/
rv = sp_writer_send_buf (self->pipe, (char *) map.data, map.size, sendbuf);
if (rv == -1) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to send data over SHM"));
gst_buffer_unmap (sendbuf, &map);
goto error;
}
gst_buffer_unmap (sendbuf, &map);
GST_OBJECT_UNLOCK (self);
if (rv == 0) {
GST_DEBUG_OBJECT (self, "No clients connected, unreffing buffer");
gst_buffer_unref (sendbuf);
}
return ret;
error:
GST_OBJECT_UNLOCK (self);
return GST_FLOW_ERROR;
}
static GstFlowReturn
gst_shm_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
GstShmSink *self = GST_SHM_SINK (bsink);
int rv = 0;
GstMapInfo map;
gboolean need_new_memory = FALSE;
GstFlowReturn ret = GST_FLOW_OK;
GstMemory *memory = NULL;
GstBuffer *sendbuf = NULL;
GST_OBJECT_LOCK (self);
while (self->wait_for_connection && !self->clients) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock)
goto flushing;
}
while (!gst_shm_sink_can_render (self, GST_BUFFER_TIMESTAMP (buf))) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock)
goto flushing;
}
if (gst_buffer_n_memory (buf) > 1) {
GST_LOG_OBJECT (self, "Buffer %p has %d GstMemory, we only support a single"
" one, need to do a memcpy", buf, gst_buffer_n_memory (buf));
need_new_memory = TRUE;
} else {
memory = gst_buffer_peek_memory (buf, 0);
if (memory->allocator != GST_ALLOCATOR (self->allocator)) {
need_new_memory = TRUE;
GST_LOG_OBJECT (self, "Memory in buffer %p was not allocated by "
"%" GST_PTR_FORMAT ", will memcpy", buf, memory->allocator);
}
}
if (need_new_memory) {
if (gst_buffer_get_size (buf) > sp_writer_get_max_buf_size (self->pipe)) {
gsize area_size = sp_writer_get_max_buf_size (self->pipe);
GST_OBJECT_UNLOCK (self);
GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT,
("Shared memory area is too small"),
("Shared memory area of size %" G_GSIZE_FORMAT " is smaller than"
"buffer of size %" G_GSIZE_FORMAT, area_size,
gst_buffer_get_size (buf)));
return GST_FLOW_ERROR;
}
while ((memory =
gst_shm_sink_allocator_alloc_locked (self->allocator,
gst_buffer_get_size (buf), &self->params)) == NULL) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock)
goto flushing;
}
while (self->wait_for_connection && !self->clients) {
g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
if (self->unlock) {
gst_memory_unref (memory);
GST_OBJECT_UNLOCK (self);
return GST_FLOW_FLUSHING;
}
}
gst_memory_map (memory, &map, GST_MAP_WRITE);
gst_buffer_extract (buf, 0, map.data, map.size);
gst_memory_unmap (memory, &map);
sendbuf = gst_buffer_new ();
gst_buffer_copy_into (sendbuf, buf, GST_BUFFER_COPY_METADATA, 0, -1);
gst_buffer_append_memory (sendbuf, memory);
} else {
sendbuf = gst_buffer_ref (buf);
}
gst_buffer_map (sendbuf, &map, GST_MAP_READ);
/* Make the memory readonly as of now as we've sent it to the other side
* We know it's not mapped for writing anywhere as we just mapped it for
* reading
*/
rv = sp_writer_send_buf (self->pipe, (char *) map.data, map.size, sendbuf);
gst_buffer_unmap (sendbuf, &map);
GST_OBJECT_UNLOCK (self);
if (rv == 0) {
GST_DEBUG_OBJECT (self, "No clients connected, unreffing buffer");
gst_buffer_unref (sendbuf);
} else if (rv == -1) {
GST_ELEMENT_ERROR (self, STREAM, FAILED, ("Invalid allocated buffer"),
("The shmpipe library rejects our buffer, this is a bug"));
ret = GST_FLOW_ERROR;
}
/* If we allocated our own memory, then unmap it */
return ret;
flushing:
GST_OBJECT_UNLOCK (self);
return GST_FLOW_FLUSHING;
}