void
mpeg4_p2_video_packetizer_c::extract_size(const unsigned char *buffer,
int size) {
if (m_size_extracted)
return;
if (0 != m_connected_to) {
m_size_extracted = true;
return;
}
uint32_t xtr_width, xtr_height;
if (mpeg4::p2::extract_size(buffer, size, xtr_width, xtr_height)) {
m_size_extracted = true;
if (!m_reader->m_appending && ((xtr_width != static_cast<uint32_t>(m_hvideo_pixel_width)) || (xtr_height != static_cast<uint32_t>(m_hvideo_pixel_height)))) {
set_video_pixel_width(xtr_width);
set_video_pixel_height(xtr_height);
if (!m_output_is_native && m_ti.m_private_data && (sizeof(alBITMAPINFOHEADER) <= m_ti.m_private_data->get_size())) {
auto bih = reinterpret_cast<alBITMAPINFOHEADER *>(m_ti.m_private_data->get_buffer());
put_uint32_le(&bih->bi_width, xtr_width);
put_uint32_le(&bih->bi_height, xtr_height);
set_codec_private(m_ti.m_private_data);
}
m_hvideo_display_width = -1;
m_hvideo_display_height = -1;
generic_packetizer_c::set_headers();
rerender_track_headers();
mxinfo_tid(m_ti.m_fname, m_ti.m_id,
boost::format(Y("The extracted values for video width and height from the MPEG4 layer 2 video data bitstream differ from what the values "
"in the source container. The ones from the video data bitstream (%1%x%2%) will be used.\n")) % xtr_width % xtr_height);
}
} else if (50 <= m_frames_output)
m_aspect_ratio_extracted = true;
}
void
generic_packetizer_c::set_video_pixel_dimensions(int width,
int height) {
set_video_pixel_width(width);
set_video_pixel_height(height);
}