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experiments
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "d011071ae14a2f6671d0b74080ae0cd8ebf3a6f8c9589a2cd45f23126fe29724"
|
||||||
|
dependencies = [
|
||||||
|
"libc",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi"
|
||||||
|
version = "0.3.9"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
|
||||||
|
dependencies = [
|
||||||
|
"winapi-i686-pc-windows-gnu",
|
||||||
|
"winapi-x86_64-pc-windows-gnu",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-i686-pc-windows-gnu"
|
||||||
|
version = "0.4.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-util"
|
||||||
|
version = "0.1.5"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
|
||||||
|
dependencies = [
|
||||||
|
"winapi",
|
||||||
|
]
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "winapi-x86_64-pc-windows-gnu"
|
||||||
|
version = "0.4.0"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||||
|
|
@ -3,6 +3,8 @@ name = "purpledot"
|
||||||
version = "0.1.0"
|
version = "0.1.0"
|
||||||
edition = "2018"
|
edition = "2018"
|
||||||
|
|
||||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
|
||||||
|
|
||||||
[dependencies]
|
[dependencies]
|
||||||
|
rusty_ffmpeg = "0.7"
|
||||||
|
image = "0.23"
|
||||||
|
ffimage = "0.9.0"
|
||||||
|
ffimage_yuv = "0.9.0"
|
||||||
253
src/framestream.rs
Normal file
253
src/framestream.rs
Normal file
|
|
@ -0,0 +1,253 @@
|
||||||
|
//! Port from Original code: https://github.com/leandromoreira/ffmpeg-libav-tutorial/blob/master/0_hello_world.c
|
||||||
|
|
||||||
|
use rusty_ffmpeg::ffi;
|
||||||
|
use rusty_ffmpeg::ffi::{
|
||||||
|
AVCodec, AVCodecContext, AVFormatContext, AVFrame, AVPacket, AVPixelFormat_AV_PIX_FMT_RGB24,
|
||||||
|
AVPixelFormat_AV_PIX_FMT_YUV420P,
|
||||||
|
};
|
||||||
|
use std::ops::{Deref, DerefMut};
|
||||||
|
use std::ptr::NonNull;
|
||||||
|
|
||||||
|
use std::{
|
||||||
|
ffi::{CStr, CString},
|
||||||
|
fs::File,
|
||||||
|
io::Write,
|
||||||
|
ptr, slice,
|
||||||
|
};
|
||||||
|
|
||||||
|
pub struct RawFrameIter {
|
||||||
|
frame_context: OwnedAvFormatContext,
|
||||||
|
packet: OwnedAvPacket,
|
||||||
|
frame: OwnedAvFrame,
|
||||||
|
codec_context: OwnedAvCodecContext,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl RawFrameIter {
|
||||||
|
pub fn new(filepath: CString) -> Self {
|
||||||
|
println!("initializing all the containers, codecs and protocols.");
|
||||||
|
|
||||||
|
let mut format_context = OwnedAvFormatContext::new();
|
||||||
|
|
||||||
|
println!(
|
||||||
|
"opening the input file ({}) and loading format (container) header",
|
||||||
|
filepath.to_str().unwrap()
|
||||||
|
);
|
||||||
|
|
||||||
|
if unsafe {
|
||||||
|
ffi::avformat_open_input(
|
||||||
|
&mut (format_context.deref_mut() as *mut _) as *mut *mut _,
|
||||||
|
filepath.as_ptr(),
|
||||||
|
ptr::null_mut(),
|
||||||
|
ptr::null_mut(),
|
||||||
|
)
|
||||||
|
} != 0
|
||||||
|
{
|
||||||
|
panic!("ERROR could not open the file");
|
||||||
|
}
|
||||||
|
|
||||||
|
let format_name = unsafe { CStr::from_ptr((*format_context.iformat).name) }
|
||||||
|
.to_str()
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
println!(
|
||||||
|
"format {}, duration {} us, bit_rate {}",
|
||||||
|
format_name, format_context.duration, format_context.bit_rate
|
||||||
|
);
|
||||||
|
|
||||||
|
println!("finding stream info from format");
|
||||||
|
|
||||||
|
if unsafe { ffi::avformat_find_stream_info(format_context.deref_mut(), ptr::null_mut()) }
|
||||||
|
< 0
|
||||||
|
{
|
||||||
|
panic!("ERROR could not get the stream info");
|
||||||
|
}
|
||||||
|
|
||||||
|
let mut codec_ptr: *const ffi::AVCodec = ptr::null_mut();
|
||||||
|
let mut codec_parameters_ptr: *const ffi::AVCodecParameters = ptr::null_mut();
|
||||||
|
let mut video_stream_index = None;
|
||||||
|
let mut resolution = None;
|
||||||
|
|
||||||
|
let streams = unsafe {
|
||||||
|
slice::from_raw_parts(format_context.streams, format_context.nb_streams as usize)
|
||||||
|
};
|
||||||
|
|
||||||
|
for (i, stream) in streams
|
||||||
|
.iter()
|
||||||
|
.map(|stream| unsafe { stream.as_ref() }.unwrap())
|
||||||
|
.enumerate()
|
||||||
|
{
|
||||||
|
println!(
|
||||||
|
"AVStream->time_base before open coded {}/{}",
|
||||||
|
stream.time_base.num, stream.time_base.den
|
||||||
|
);
|
||||||
|
println!(
|
||||||
|
"AVStream->r_frame_rate before open coded {}/{}",
|
||||||
|
stream.r_frame_rate.num, stream.r_frame_rate.den
|
||||||
|
);
|
||||||
|
println!("AVStream->start_time {}", stream.start_time);
|
||||||
|
println!("AVStream->duration {}", stream.duration);
|
||||||
|
println!("finding the proper decoder (CODEC)");
|
||||||
|
|
||||||
|
let local_codec_params = unsafe { stream.codecpar.as_ref() }.unwrap();
|
||||||
|
let local_codec =
|
||||||
|
unsafe { ffi::avcodec_find_decoder(local_codec_params.codec_id).as_ref() }
|
||||||
|
.expect("ERROR unsupported codec!");
|
||||||
|
|
||||||
|
match local_codec_params.codec_type {
|
||||||
|
ffi::AVMediaType_AVMEDIA_TYPE_VIDEO => {
|
||||||
|
if video_stream_index.is_none() {
|
||||||
|
video_stream_index = Some(i);
|
||||||
|
codec_ptr = local_codec;
|
||||||
|
codec_parameters_ptr = local_codec_params;
|
||||||
|
}
|
||||||
|
|
||||||
|
println!(
|
||||||
|
"Video Codec: resolution {} x {}",
|
||||||
|
local_codec_params.width, local_codec_params.height
|
||||||
|
);
|
||||||
|
resolution = Some((local_codec_params.width, local_codec_params.height));
|
||||||
|
}
|
||||||
|
ffi::AVMediaType_AVMEDIA_TYPE_AUDIO => {
|
||||||
|
println!(
|
||||||
|
"Audio Codec: {} channels, sample rate {}",
|
||||||
|
local_codec_params.channels, local_codec_params.sample_rate
|
||||||
|
);
|
||||||
|
}
|
||||||
|
_ => {}
|
||||||
|
};
|
||||||
|
|
||||||
|
let codec_name = unsafe { CStr::from_ptr(local_codec.name) }
|
||||||
|
.to_str()
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
println!(
|
||||||
|
"\tCodec {} ID {} bit_rate {}",
|
||||||
|
codec_name, local_codec.id, local_codec_params.bit_rate
|
||||||
|
);
|
||||||
|
}
|
||||||
|
let (width, height) = resolution.expect("No resolution found");
|
||||||
|
|
||||||
|
let mut codec_context = OwnedAvCodecContext::new(codec_ptr);
|
||||||
|
|
||||||
|
if unsafe {
|
||||||
|
ffi::avcodec_parameters_to_context(codec_context.deref_mut(), codec_parameters_ptr)
|
||||||
|
} < 0
|
||||||
|
{
|
||||||
|
panic!("failed to copy codec params to codec context");
|
||||||
|
}
|
||||||
|
|
||||||
|
if unsafe { ffi::avcodec_open2(codec_context.deref_mut(), codec_ptr, ptr::null_mut()) } < 0
|
||||||
|
{
|
||||||
|
panic!("failed to open codec through avcodec_open2");
|
||||||
|
}
|
||||||
|
|
||||||
|
let frame = OwnedAvFrame::new();
|
||||||
|
let packet = OwnedAvPacket::new();
|
||||||
|
|
||||||
|
let mut packets_waiting = 8;
|
||||||
|
|
||||||
|
RawFrameIter {
|
||||||
|
frame_context: format_context,
|
||||||
|
packet,
|
||||||
|
frame,
|
||||||
|
codec_context,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl RawFrameIter {
|
||||||
|
fn next(&mut self) -> Option<&OwnedAvFrame> {
|
||||||
|
if unsafe { ffi::av_read_frame(format_context, packet) } >= 0 {
|
||||||
|
if video_stream_index == Some(packet.stream_index as usize) {
|
||||||
|
println!("AVPacket->pts {}", packet.pts);
|
||||||
|
decode_packet(packet, codec_context, frame).unwrap();
|
||||||
|
packets_waiting -= 1;
|
||||||
|
if packets_waiting <= 0 {
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
unsafe { ffi::av_packet_unref(packet) };
|
||||||
|
Some(&self.frame)
|
||||||
|
} else {
|
||||||
|
None
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
macro_rules! owned_ptr {
|
||||||
|
($name:ident, $ptr:path) => {
|
||||||
|
struct $name {
|
||||||
|
ptr: NonNull<$ptr>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Deref for $name {
|
||||||
|
type Target = $ptr;
|
||||||
|
|
||||||
|
fn deref(&self) -> &Self::Target {
|
||||||
|
unsafe { self.ptr.as_ref() }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl DerefMut for $name {
|
||||||
|
fn deref_mut(&mut self) -> &mut Self::Target {
|
||||||
|
unsafe { self.ptr.as_mut() }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
($name:ident, $ptr:path, $alloc:path, $free:path) => {
|
||||||
|
owned_ptr!($name, $ptr);
|
||||||
|
|
||||||
|
impl $name {
|
||||||
|
pub fn new() -> Self {
|
||||||
|
let ptr = NonNull::new(unsafe { $alloc() })
|
||||||
|
.expect("failed to allocated memory for $name");
|
||||||
|
$name { ptr }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Drop for $name {
|
||||||
|
fn drop(&mut self) {
|
||||||
|
unsafe {
|
||||||
|
$free(&mut (self.ptr.as_ptr()));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
owned_ptr!(
|
||||||
|
OwnedAvFrame,
|
||||||
|
AVFrame,
|
||||||
|
ffi::av_frame_alloc,
|
||||||
|
ffi::av_frame_free
|
||||||
|
);
|
||||||
|
owned_ptr!(
|
||||||
|
OwnedAvPacket,
|
||||||
|
AVPacket,
|
||||||
|
ffi::av_packet_alloc,
|
||||||
|
ffi::av_packet_free
|
||||||
|
);
|
||||||
|
owned_ptr!(
|
||||||
|
OwnedAvFormatContext,
|
||||||
|
AVFormatContext,
|
||||||
|
ffi::avformat_alloc_context,
|
||||||
|
ffi::avformat_close_input
|
||||||
|
);
|
||||||
|
|
||||||
|
owned_ptr!(OwnedAvCodecContext, AVCodecContext);
|
||||||
|
impl OwnedAvCodecContext {
|
||||||
|
pub fn new(codec: *const ffi::AVCodec) -> Self {
|
||||||
|
let ptr = NonNull::new(unsafe { ffi::avcodec_alloc_context3(codec) })
|
||||||
|
.expect("failed to allocated memory for $name");
|
||||||
|
OwnedAvCodecContext { ptr }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Drop for OwnedAvCodecContext {
|
||||||
|
fn drop(&mut self) {
|
||||||
|
unsafe {
|
||||||
|
ffi::avcodec_free_context(&mut (self.ptr.as_ptr()));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
251
src/main.rs
251
src/main.rs
|
|
@ -1,3 +1,252 @@
|
||||||
|
//! Port from Original code: https://github.com/leandromoreira/ffmpeg-libav-tutorial/blob/master/0_hello_world.c
|
||||||
|
mod framestream;
|
||||||
|
|
||||||
|
use rusty_ffmpeg::ffi;
|
||||||
|
|
||||||
|
use std::{
|
||||||
|
ffi::{CStr, CString},
|
||||||
|
fs::File,
|
||||||
|
io::Write,
|
||||||
|
ptr, slice,
|
||||||
|
};
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
println!("Hello, world!");
|
let filepath: CString = CString::new("./data/track3.mp4").unwrap();
|
||||||
|
|
||||||
|
println!("initializing all the containers, codecs and protocols.");
|
||||||
|
|
||||||
|
let mut format_context_ptr = unsafe { ffi::avformat_alloc_context() };
|
||||||
|
if format_context_ptr.is_null() {
|
||||||
|
panic!("ERROR could not allocate memory for Format Context");
|
||||||
|
}
|
||||||
|
|
||||||
|
println!(
|
||||||
|
"opening the input file ({}) and loading format (container) header",
|
||||||
|
filepath.to_str().unwrap()
|
||||||
|
);
|
||||||
|
|
||||||
|
if unsafe {
|
||||||
|
ffi::avformat_open_input(
|
||||||
|
&mut format_context_ptr,
|
||||||
|
filepath.as_ptr(),
|
||||||
|
ptr::null_mut(),
|
||||||
|
ptr::null_mut(),
|
||||||
|
)
|
||||||
|
} != 0
|
||||||
|
{
|
||||||
|
panic!("ERROR could not open the file");
|
||||||
|
}
|
||||||
|
|
||||||
|
let format_context = unsafe { format_context_ptr.as_mut() }.unwrap();
|
||||||
|
|
||||||
|
let format_name = unsafe { CStr::from_ptr((*format_context.iformat).name) }
|
||||||
|
.to_str()
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
println!(
|
||||||
|
"format {}, duration {} us, bit_rate {}",
|
||||||
|
format_name, format_context.duration, format_context.bit_rate
|
||||||
|
);
|
||||||
|
|
||||||
|
println!("finding stream info from format");
|
||||||
|
|
||||||
|
if unsafe { ffi::avformat_find_stream_info(format_context, ptr::null_mut()) } < 0 {
|
||||||
|
panic!("ERROR could not get the stream info");
|
||||||
|
}
|
||||||
|
|
||||||
|
let mut codec_ptr: *const ffi::AVCodec = ptr::null_mut();
|
||||||
|
let mut codec_parameters_ptr: *const ffi::AVCodecParameters = ptr::null_mut();
|
||||||
|
let mut video_stream_index = None;
|
||||||
|
let mut resolution = None;
|
||||||
|
|
||||||
|
let streams = unsafe {
|
||||||
|
slice::from_raw_parts(format_context.streams, format_context.nb_streams as usize)
|
||||||
|
};
|
||||||
|
|
||||||
|
for (i, stream) in streams
|
||||||
|
.iter()
|
||||||
|
.map(|stream| unsafe { stream.as_ref() }.unwrap())
|
||||||
|
.enumerate()
|
||||||
|
{
|
||||||
|
println!(
|
||||||
|
"AVStream->time_base before open coded {}/{}",
|
||||||
|
stream.time_base.num, stream.time_base.den
|
||||||
|
);
|
||||||
|
println!(
|
||||||
|
"AVStream->r_frame_rate before open coded {}/{}",
|
||||||
|
stream.r_frame_rate.num, stream.r_frame_rate.den
|
||||||
|
);
|
||||||
|
println!("AVStream->start_time {}", stream.start_time);
|
||||||
|
println!("AVStream->duration {}", stream.duration);
|
||||||
|
println!("finding the proper decoder (CODEC)");
|
||||||
|
|
||||||
|
let local_codec_params = unsafe { stream.codecpar.as_ref() }.unwrap();
|
||||||
|
let local_codec =
|
||||||
|
unsafe { ffi::avcodec_find_decoder(local_codec_params.codec_id).as_ref() }
|
||||||
|
.expect("ERROR unsupported codec!");
|
||||||
|
|
||||||
|
match local_codec_params.codec_type {
|
||||||
|
ffi::AVMediaType_AVMEDIA_TYPE_VIDEO => {
|
||||||
|
if video_stream_index.is_none() {
|
||||||
|
video_stream_index = Some(i);
|
||||||
|
codec_ptr = local_codec;
|
||||||
|
codec_parameters_ptr = local_codec_params;
|
||||||
|
}
|
||||||
|
|
||||||
|
println!(
|
||||||
|
"Video Codec: resolution {} x {}",
|
||||||
|
local_codec_params.width, local_codec_params.height
|
||||||
|
);
|
||||||
|
resolution = Some((local_codec_params.width, local_codec_params.height));
|
||||||
|
}
|
||||||
|
ffi::AVMediaType_AVMEDIA_TYPE_AUDIO => {
|
||||||
|
println!(
|
||||||
|
"Audio Codec: {} channels, sample rate {}",
|
||||||
|
local_codec_params.channels, local_codec_params.sample_rate
|
||||||
|
);
|
||||||
|
}
|
||||||
|
_ => {}
|
||||||
|
};
|
||||||
|
|
||||||
|
let codec_name = unsafe { CStr::from_ptr(local_codec.name) }
|
||||||
|
.to_str()
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
println!(
|
||||||
|
"\tCodec {} ID {} bit_rate {}",
|
||||||
|
codec_name, local_codec.id, local_codec_params.bit_rate
|
||||||
|
);
|
||||||
|
}
|
||||||
|
let (width, height) = resolution.expect("No resolution found");
|
||||||
|
|
||||||
|
let codec_context = unsafe { ffi::avcodec_alloc_context3(codec_ptr).as_mut() }
|
||||||
|
.expect("failed to allocated memory for AVCodecContext");
|
||||||
|
|
||||||
|
if unsafe { ffi::avcodec_parameters_to_context(codec_context, codec_parameters_ptr) } < 0 {
|
||||||
|
panic!("failed to copy codec params to codec context");
|
||||||
|
}
|
||||||
|
|
||||||
|
if unsafe { ffi::avcodec_open2(codec_context, codec_ptr, ptr::null_mut()) } < 0 {
|
||||||
|
panic!("failed to open codec through avcodec_open2");
|
||||||
|
}
|
||||||
|
|
||||||
|
let frame =
|
||||||
|
unsafe { ffi::av_frame_alloc().as_mut() }.expect("failed to allocated memory for AVFrame");
|
||||||
|
let packet = unsafe { ffi::av_packet_alloc().as_mut() }
|
||||||
|
.expect("failed to allocated memory for AVPacket");
|
||||||
|
|
||||||
|
let byte_size =
|
||||||
|
unsafe { ffi::avpicture_get_size(AVPixelFormat_AV_PIX_FMT_RGB24, width, height) };
|
||||||
|
let rgb_buffer = vec![0; byte_size as usize];
|
||||||
|
let rgb_frame =
|
||||||
|
unsafe { ffi::av_frame_alloc().as_mut() }.expect("failed to allocated memory for AVFrame");
|
||||||
|
unsafe {
|
||||||
|
ffi::avpicture_fill(
|
||||||
|
rgb_frame as *mut _ as *mut _,
|
||||||
|
rgb_buffer.as_ptr(),
|
||||||
|
AVPixelFormat_AV_PIX_FMT_RGB24,
|
||||||
|
width,
|
||||||
|
height,
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
let mut packets_waiting = 8;
|
||||||
|
|
||||||
|
while unsafe { ffi::av_read_frame(format_context, packet) } >= 0 {
|
||||||
|
if video_stream_index == Some(packet.stream_index as usize) {
|
||||||
|
println!("AVPacket->pts {}", packet.pts);
|
||||||
|
decode_packet(packet, codec_context, frame).unwrap();
|
||||||
|
packets_waiting -= 1;
|
||||||
|
if packets_waiting <= 0 {
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
unsafe { ffi::av_packet_unref(packet) };
|
||||||
|
}
|
||||||
|
|
||||||
|
println!("releasing all the resources");
|
||||||
|
|
||||||
|
unsafe {
|
||||||
|
ffi::avformat_close_input(&mut (format_context as *mut _));
|
||||||
|
ffi::av_packet_free(&mut (packet as *mut _));
|
||||||
|
ffi::av_frame_free(&mut (frame as *mut _));
|
||||||
|
ffi::avcodec_free_context(&mut (codec_context as *mut _));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn decode_packet(
|
||||||
|
packet: &ffi::AVPacket,
|
||||||
|
codec_context: &mut ffi::AVCodecContext,
|
||||||
|
frame: &mut ffi::AVFrame,
|
||||||
|
) -> Result<(), String> {
|
||||||
|
let mut response = unsafe { ffi::avcodec_send_packet(codec_context, packet) };
|
||||||
|
|
||||||
|
if response < 0 {
|
||||||
|
return Err(String::from("Error while sending a packet to the decoder."));
|
||||||
|
}
|
||||||
|
|
||||||
|
while response >= 0 {
|
||||||
|
response = unsafe { ffi::avcodec_receive_frame(codec_context, frame) };
|
||||||
|
if response == ffi::AVERROR(ffi::EAGAIN) || response == ffi::AVERROR_EOF {
|
||||||
|
break;
|
||||||
|
} else if response < 0 {
|
||||||
|
return Err(String::from(
|
||||||
|
"Error while receiving a frame from the decoder.",
|
||||||
|
));
|
||||||
|
} else {
|
||||||
|
println!(
|
||||||
|
"Frame {} (type={}, size={} bytes) pts {} key_frame {} [DTS {}]",
|
||||||
|
codec_context.frame_number,
|
||||||
|
unsafe { ffi::av_get_picture_type_char(frame.pict_type) },
|
||||||
|
frame.pkt_size,
|
||||||
|
frame.pts,
|
||||||
|
frame.key_frame,
|
||||||
|
frame.coded_picture_number
|
||||||
|
);
|
||||||
|
|
||||||
|
let frame_filename = format!("./data/output/frame-{}.pgm", codec_context.frame_number);
|
||||||
|
let width = frame.width as usize;
|
||||||
|
let height = frame.height as usize;
|
||||||
|
let wrap = frame.linesize[0] as usize;
|
||||||
|
let data = unsafe { slice::from_raw_parts(frame.data[0], wrap * height) };
|
||||||
|
|
||||||
|
if frame.format != AVPixelFormat_AV_PIX_FMT_YUV420P {
|
||||||
|
panic!("Input has to be yuv420p, got :{}", frame.format);
|
||||||
|
}
|
||||||
|
|
||||||
|
unsafe {
|
||||||
|
// ffi::sws_scale(codec_context, frame.data,
|
||||||
|
// wrap, 0, height, pFrameRGB->data,
|
||||||
|
// pFrameRGB->linesize);
|
||||||
|
}
|
||||||
|
|
||||||
|
dbg!(wrap, width, height);
|
||||||
|
|
||||||
|
save_gray_frame(data, wrap, width, height, frame_filename).unwrap();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
use ffimage::packed::{ImageBuffer, ImageView};
|
||||||
|
use ffimage::traits::Convert;
|
||||||
|
use ffimage_yuv::yuv;
|
||||||
|
use ffimage_yuv::yuv::Yuv;
|
||||||
|
use rusty_ffmpeg::ffi::{AVPixelFormat_AV_PIX_FMT_RGB24, AVPixelFormat_AV_PIX_FMT_YUV420P};
|
||||||
|
|
||||||
|
fn save_gray_frame(
|
||||||
|
buf: &[u8],
|
||||||
|
wrap: usize,
|
||||||
|
xsize: usize,
|
||||||
|
ysize: usize,
|
||||||
|
filename: String,
|
||||||
|
) -> Result<(), std::io::Error> {
|
||||||
|
let mut file = File::create(filename)?;
|
||||||
|
let data = format!("P5\n{} {}\n{}\n", xsize, ysize, 255);
|
||||||
|
file.write_all(data.as_bytes())?;
|
||||||
|
|
||||||
|
for i in 0..ysize {
|
||||||
|
file.write_all(&buf[i * wrap..(i * wrap + xsize)])?;
|
||||||
|
}
|
||||||
|
Ok(())
|
||||||
}
|
}
|
||||||
|
|
|
||||||
Loading…
Add table
Add a link
Reference in a new issue