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nixpkgs/pkgs/by-name/mu/musly/0001-Fix-build-with-FFmpeg-7.patch

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From ab430ea4460aba050d97d3e3a712a3b6dd809db9 Mon Sep 17 00:00:00 2001
From: Emily <hello@emily.moe>
Date: Mon, 15 Jul 2024 00:41:04 +0100
Subject: [PATCH 1/4] Fix build with FFmpeg 7
---
libmusly/CMakeLists.txt | 5 --
libmusly/decoders/libav.cpp | 136 +++++++++++-------------------------
2 files changed, 42 insertions(+), 99 deletions(-)
diff --git a/libmusly/CMakeLists.txt b/libmusly/CMakeLists.txt
index d6d3680..98151df 100644
--- a/libmusly/CMakeLists.txt
+++ b/libmusly/CMakeLists.txt
@@ -16,11 +16,6 @@ if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/external")
PROPERTIES COMPILE_FLAGS "-DLIBMUSLY_EXTERNAL ${LIBMUSLY_EXTERNAL_FLAGS}")
endif()
-if(EXISTS "${LIBAV_INCLUDE_DIRS}/libavutil/channel_layout.h")
- set_source_files_properties(decoders/libav.cpp
- PROPERTIES COMPILE_FLAGS "-DHAVE_AVUTIL_CHANNEL_LAYOUT")
-endif()
-
if(USE_OPENMP AND OPENMP_FOUND)
# disable OpenMP for kiss FFT, it slows things down terribly
set_source_files_properties(kissfft/kiss_fft.c
diff --git a/libmusly/decoders/libav.cpp b/libmusly/decoders/libav.cpp
index a78b904..90f93ae 100644
--- a/libmusly/decoders/libav.cpp
+++ b/libmusly/decoders/libav.cpp
@@ -20,37 +20,13 @@
extern "C" {
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
-#ifdef HAVE_AVUTIL_CHANNEL_LAYOUT
#include <libavutil/channel_layout.h>
-#endif
}
#include "minilog.h"
#include "resampler.h"
#include "libav.h"
-// We define some macros to be compatible to different libav versions
-// without spreading #if and #else all over the place.
-#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55, 45, 101)
-#define AV_FRAME_ALLOC avcodec_alloc_frame
-#define AV_FRAME_UNREF avcodec_get_frame_defaults
-#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(54, 28, 0)
-#define AV_FRAME_FREE(X) av_free(*(X))
-#else
-#define AV_FRAME_FREE avcodec_free_frame
-#endif
-#else
-#define AV_FRAME_ALLOC av_frame_alloc
-#define AV_FRAME_UNREF av_frame_unref
-#define AV_FRAME_FREE av_frame_free
-#endif
-
-#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57, 7, 0)
-#define AV_PACKET_UNREF av_free_packet
-#else
-#define AV_PACKET_UNREF av_packet_unref
-#endif
-
namespace musly {
namespace decoders {
@@ -58,12 +34,6 @@ MUSLY_DECODER_REGIMPL(libav, 0);
libav::libav()
{
-#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58, 9, 100)
- av_register_all();
-#endif
-#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(58, 9, 100)
- avcodec_register_all();
-#endif
}
int
@@ -177,13 +147,7 @@ libav::decodeto_22050hz_mono_float(
AVStream *st = fmtx->streams[audio_stream_idx];
// find a decoder for the stream
-#if (LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57, 14, 0)) || ((LIBAVCODEC_VERSION_MICRO >= 100) && (LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57, 33, 100)))
- // old libav version (libavcodec < 57.14 for libav, < 57.33 for ffmpeg):
- // stream has a codec context we can use
- AVCodecContext *decx = st->codec;
- #define AVCODEC_FREE_CONTEXT(x)
-#else
- // new libav version: need to create codec context for stream
+ // need to create codec context for stream
AVCodecParameters *decp = st->codecpar;
AVCodecContext *decx = avcodec_alloc_context3(NULL);
if (!decx) {
@@ -200,71 +164,63 @@ libav::decodeto_22050hz_mono_float(
avformat_close_input(&fmtx);
return std::vector<float>(0);
}
- #if LIBAVCODEC_VERSION_MICRO >= 100
- #if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(58,3,102)
- // only available in ffmpeg, deprecated after 58
- av_codec_set_pkt_timebase(decx, st->time_base);
- #endif
- #endif
- #define AVCODEC_FREE_CONTEXT(x) avcodec_free_context(x)
-#endif
- AVCodec *dec = avcodec_find_decoder(decx->codec_id);
+ const AVCodec *dec = avcodec_find_decoder(decx->codec_id);
if (!dec) {
MINILOG(logERROR) << "Could not find codec.";
- AVCODEC_FREE_CONTEXT(&decx);
+ avcodec_free_context(&decx);
avformat_close_input(&fmtx);
return std::vector<float>(0);
}
// open the decoder
// (kindly ask for stereo downmix and floats, but not all decoders care)
- decx->request_channel_layout = AV_CH_LAYOUT_STEREO_DOWNMIX;
decx->request_sample_fmt = AV_SAMPLE_FMT_FLT;
#ifdef _OPENMP
#pragma omp critical
#endif
{
- avret = avcodec_open2(decx, dec, NULL);
+ AVDictionary *options = NULL;
+ av_dict_set(&options, "downmix", "stereo", 0);
+ avret = avcodec_open2(decx, dec, &options);
}
if (avret < 0) {
MINILOG(logERROR) << "Could not open codec.";
- AVCODEC_FREE_CONTEXT(&decx);
+ avcodec_free_context(&decx);
avformat_close_input(&fmtx);
return std::vector<float>(0);
}
// Currently only mono and stereo files are supported.
- if ((decx->channels != 1) && (decx->channels != 2)) {
+ if ((decx->ch_layout.nb_channels != 1) && (decx->ch_layout.nb_channels != 2)) {
MINILOG(logWARNING) << "Unsupported number of channels: "
- << decx->channels;
+ << decx->ch_layout.nb_channels;
- AVCODEC_FREE_CONTEXT(&decx);
+ avcodec_free_context(&decx);
avformat_close_input(&fmtx);
return std::vector<float>(0);
}
// allocate a frame
- AVFrame* frame = AV_FRAME_ALLOC();
+ AVFrame* frame = av_frame_alloc();
if (!frame) {
MINILOG(logWARNING) << "Could not allocate frame";
- AVCODEC_FREE_CONTEXT(&decx);
+ avcodec_free_context(&decx);
avformat_close_input(&fmtx);
return std::vector<float>(0);
}
// allocate and initialize a packet
- AVPacket pkt;
- av_init_packet(&pkt);
- pkt.data = NULL;
- pkt.size = 0;
+ AVPacket* pkt = av_packet_alloc();
+ pkt->data = NULL;
+ pkt->size = 0;
int got_frame = 0;
// configuration
const int input_stride = av_get_bytes_per_sample(decx->sample_fmt);
- const int num_planes = av_sample_fmt_is_planar(decx->sample_fmt) ? decx->channels : 1;
+ const int num_planes = av_sample_fmt_is_planar(decx->sample_fmt) ? decx->ch_layout.nb_channels : 1;
const int output_stride = sizeof(float) * num_planes;
int decode_samples; // how many samples to decode; zero to decode all
@@ -296,7 +252,7 @@ libav::decodeto_22050hz_mono_float(
// fault when trying to access frame->data[i] for i > 0 further below)
if ((excerpt_start > 0) and (av_seek_frame(fmtx, audio_stream_idx,
excerpt_start * st->time_base.den / st->time_base.num,
- AVSEEK_FLAG_BACKWARD || AVSEEK_FLAG_ANY) >= 0)) {
+ AVSEEK_FLAG_BACKWARD | AVSEEK_FLAG_ANY) >= 0)) {
// skipping went fine: decode only what's needed
decode_samples = excerpt_length * decx->sample_rate;
excerpt_start = 0;
@@ -333,7 +289,7 @@ libav::decodeto_22050hz_mono_float(
// excerpt_start tells us up to how many seconds to cut from the beginning.
// read packets
- const int channels = decx->channels;
+ const int channels = decx->ch_layout.nb_channels;
const int sample_rate = decx->sample_rate;
float* buffer = NULL;
int buffersize = 0;
@@ -344,35 +300,29 @@ libav::decodeto_22050hz_mono_float(
{
// skip all frames that are not part of the audio stream, and spurious
// frames possibly found after seeking (wrong channels / sample_rate)
- while (((avret = av_read_frame(fmtx, &pkt)) >= 0)
- && ((pkt.stream_index != audio_stream_idx) ||
- (decx->channels != channels) ||
+ while (((avret = av_read_frame(fmtx, pkt)) >= 0)
+ && ((pkt->stream_index != audio_stream_idx) ||
+ (decx->ch_layout.nb_channels != channels) ||
(decx->sample_rate != sample_rate)))
{
- AV_PACKET_UNREF(&pkt);
+ av_packet_unref(pkt);
MINILOG(logTRACE) << "Skipping frame...";
}
if (avret < 0) {
// stop decoding if av_read_frame() failed
- AV_PACKET_UNREF(&pkt);
+ av_packet_unref(pkt);
break;
}
- uint8_t* data = pkt.data;
- int size = pkt.size;
- while (pkt.size > 0) {
+ uint8_t* data = pkt->data;
+ int size = pkt->size;
+ while (pkt->size > 0) {
// try to decode a frame
- AV_FRAME_UNREF(frame);
+ av_frame_unref(frame);
int len = 0;
got_frame = 0;
-#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(57, 48, 101)
- len = avcodec_decode_audio4(decx, frame, &got_frame, &pkt);
- if (len < 0) {
- avret = AVERROR(EINVAL);
- }
-#else
avret = avcodec_receive_frame(decx, frame);
if (avret == 0) {
got_frame = 1;
@@ -381,14 +331,13 @@ libav::decodeto_22050hz_mono_float(
avret = 0;
}
if (avret == 0) {
- avret = avcodec_send_packet(decx, &pkt);
+ avret = avcodec_send_packet(decx, pkt);
if (avret == 0) {
- len = pkt.size;
+ len = pkt->size;
} else if (avret == AVERROR(EAGAIN)) {
avret = 0;
}
}
-#endif
if (avret < 0) {
MINILOG(logWARNING) << "Error decoding an audio frame";
@@ -400,8 +349,8 @@ libav::decodeto_22050hz_mono_float(
// if too many frames failed decoding, abort
MINILOG(logERROR) << "Too many errors, aborting.";
- AV_FRAME_FREE(&frame);
- AV_PACKET_UNREF(&pkt);
+ av_frame_free(&frame);
+ av_packet_unref(pkt);
avformat_close_input(&fmtx);
if (buffer) {
delete[] buffer;
@@ -414,7 +363,7 @@ libav::decodeto_22050hz_mono_float(
// if we got a frame
if (got_frame) {
// do we need to increase the buffer size?
- int input_samples = frame->nb_samples*decx->channels;
+ int input_samples = frame->nb_samples*decx->ch_layout.nb_channels;
if (input_samples > buffersize) {
if (buffer) {
delete[] buffer;
@@ -434,8 +383,8 @@ libav::decodeto_22050hz_mono_float(
input_samples / num_planes) < 0) {
MINILOG(logERROR) << "Strange sample format. Abort.";
- AV_FRAME_FREE(&frame);
- AV_PACKET_UNREF(&pkt);
+ av_frame_free(&frame);
+ av_packet_unref(pkt);
avformat_close_input(&fmtx);
if (buffer) {
delete[] buffer;
@@ -445,7 +394,7 @@ libav::decodeto_22050hz_mono_float(
}
// inplace downmix to mono, if required
- if (decx->channels == 2) {
+ if (decx->ch_layout.nb_channels == 2) {
for (int i = 0; i < frame->nb_samples; i++) {
buffer[i] = (buffer[i*2] + buffer[i*2+1]) / 2.0f;
}
@@ -457,13 +406,13 @@ libav::decodeto_22050hz_mono_float(
}
// consume the packet
- pkt.data += len;
- pkt.size -= len;
+ pkt->data += len;
+ pkt->size -= len;
}
- pkt.data = data;
- pkt.size = size;
+ pkt->data = data;
+ pkt->size = size;
- AV_PACKET_UNREF(&pkt);
+ av_packet_unref(pkt);
}
MINILOG(logTRACE) << "Decoding loop finished.";
@@ -514,13 +463,12 @@ libav::decodeto_22050hz_mono_float(
if (buffer) {
delete[] buffer;
}
- AV_FRAME_FREE(&frame);
+ av_frame_free(&frame);
#ifdef _OPENMP
#pragma omp critical
#endif
{
- avcodec_close(decx);
- AVCODEC_FREE_CONTEXT(&decx);
+ avcodec_free_context(&decx);
avformat_close_input(&fmtx);
}
--
2.45.2
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