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RetroArch/record/ffemu.c
Themaister a3351e17f1 Fix hang with FFV1.
2012-03-08 00:45:03 +01:00

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/* SSNES - A Super Nintendo Entertainment System (SNES) Emulator frontend for libsnes.
* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
*
* Some code herein may be based on code found in BSNES.
*
* SSNES is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* SSNES is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with SSNES.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "../msvc/msvc_compat.h"
#ifdef __cplusplus
extern "C" {
#endif
#include <libavcodec/avcodec.h>
#include <libavutil/mathematics.h>
#include <libavutil/avutil.h>
#include <libavutil/avstring.h>
#include <libavutil/opt.h>
#include <libavformat/avformat.h>
#include <libswscale/swscale.h>
#include <libavutil/avconfig.h>
#ifdef __cplusplus
}
#endif
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "../boolean.h"
#include "../fifo_buffer.h"
#include "../thread.h"
#include "../general.h"
#include "ffemu.h"
#include <assert.h>
#ifdef HAVE_CONFIG_H
#include "../config.h"
#endif
struct ff_video_info
{
AVCodecContext *codec;
AVCodec *encoder;
AVFrame *conv_frame;
uint8_t *conv_frame_buf;
int64_t frame_cnt;
uint8_t *outbuf;
size_t outbuf_size;
enum PixelFormat fmt;
enum PixelFormat pix_fmt;
size_t pix_size;
AVFormatContext *format;
struct SwsContext *sws_ctx;
};
struct ff_audio_info
{
AVCodecContext *codec;
AVCodec *encoder;
int16_t *buffer;
size_t frames_in_buffer;
int64_t frame_cnt;
uint8_t *outbuf;
size_t outbuf_size;
};
struct ff_muxer_info
{
AVFormatContext *ctx;
AVStream *astream;
AVStream *vstream;
};
struct ffemu
{
struct ff_video_info video;
struct ff_audio_info audio;
struct ff_muxer_info muxer;
struct ffemu_params params;
scond_t *cond;
slock_t *cond_lock;
slock_t *lock;
fifo_buffer_t *audio_fifo;
fifo_buffer_t *video_fifo;
fifo_buffer_t *attr_fifo;
sthread_t *thread;
volatile bool alive;
volatile bool can_sleep;
};
static bool ffemu_init_audio(struct ff_audio_info *audio, struct ffemu_params *param)
{
AVCodec *codec = avcodec_find_encoder_by_name("flac");
if (!codec)
return false;
audio->encoder = codec;
// FFmpeg just loves to deprecate stuff :)
#ifdef HAVE_FFMPEG_ALLOC_CONTEXT3
audio->codec = avcodec_alloc_context3(codec);
#else
audio->codec = avcodec_alloc_context();
avcodec_get_context_defaults(audio->codec);
#endif
audio->codec->sample_rate = (int)roundf(param->samplerate);
audio->codec->time_base = av_d2q(1.0 / param->samplerate, 1000000);
audio->codec->channels = param->channels;
audio->codec->sample_fmt = AV_SAMPLE_FMT_S16;
#ifdef HAVE_FFMPEG_AVCODEC_OPEN2
if (avcodec_open2(audio->codec, codec, NULL) != 0)
#else
if (avcodec_open(audio->codec, codec) != 0)
#endif
{
return false;
}
audio->buffer = (int16_t*)av_malloc(
audio->codec->frame_size *
audio->codec->channels *
sizeof(int16_t));
if (!audio->buffer)
return false;
audio->outbuf_size = FF_MIN_BUFFER_SIZE;
audio->outbuf = (uint8_t*)av_malloc(audio->outbuf_size);
if (!audio->outbuf)
return false;
return true;
}
static bool ffemu_init_video(struct ff_video_info *video, const struct ffemu_params *param)
{
#ifdef HAVE_X264RGB
AVCodec *codec = NULL;
if (g_settings.video.h264_record)
{
codec = avcodec_find_encoder_by_name("libx264rgb");
// Older versions of FFmpeg have RGB encoding in libx264.
if (!codec)
codec = avcodec_find_encoder_by_name("libx264");
}
else
codec = avcodec_find_encoder_by_name("ffv1");
#else
AVCodec *codec = avcodec_find_encoder_by_name("ffv1");
#endif
if (!codec)
return false;
video->encoder = codec;
#if AV_HAVE_BIGENDIAN
video->fmt = PIX_FMT_RGB555BE;
#else
video->fmt = PIX_FMT_RGB555LE;
#endif
video->pix_size = sizeof(uint16_t);
if (param->rgb32)
{
video->fmt = PIX_FMT_RGB32;
video->pix_size = sizeof(uint32_t);
}
#ifdef HAVE_X264RGB
video->pix_fmt = g_settings.video.h264_record ? PIX_FMT_BGR24 : PIX_FMT_RGB32;
#else
video->pix_fmt = PIX_FMT_RGB32;
#endif
#ifdef HAVE_FFMPEG_ALLOC_CONTEXT3
video->codec = avcodec_alloc_context3(codec);
#else
video->codec = avcodec_alloc_context();
avcodec_get_context_defaults(video->codec);
#endif
video->codec->width = param->out_width;
video->codec->height = param->out_height;
video->codec->time_base = av_d2q(1.0 / param->fps, 1000000); // Arbitrary big number.
video->codec->sample_aspect_ratio = av_d2q(param->aspect_ratio * param->out_height / param->out_width, 255);
video->codec->pix_fmt = video->pix_fmt;
#ifdef HAVE_FFMPEG_AVCODEC_OPEN2
AVDictionary *opts = NULL;
#endif
#ifdef HAVE_X264RGB
if (g_settings.video.h264_record)
{
video->codec->thread_count = 3;
av_dict_set(&opts, "qp", "0", 0);
}
else
video->codec->thread_count = 2;
#else
video->codec->thread_count = 2;
#endif
#ifdef HAVE_FFMPEG_AVCODEC_OPEN2
if (avcodec_open2(video->codec, codec, &opts) != 0)
#else
if (avcodec_open(video->codec, codec) != 0)
#endif
return false;
#ifdef HAVE_FFMPEG_AVCODEC_OPEN2
if (opts)
av_dict_free(&opts);
#endif
// Allocate a big buffer :p ffmpeg API doesn't seem to give us some clues how big this buffer should be.
video->outbuf_size = 1 << 23;
video->outbuf = (uint8_t*)av_malloc(video->outbuf_size);
size_t size = avpicture_get_size(video->pix_fmt, param->out_width, param->out_height);
video->conv_frame_buf = (uint8_t*)av_malloc(size);
video->conv_frame = avcodec_alloc_frame();
avpicture_fill((AVPicture*)video->conv_frame, video->conv_frame_buf, video->pix_fmt, param->out_width, param->out_height);
return true;
}
static bool ffemu_init_muxer(ffemu_t *handle)
{
AVFormatContext *ctx = avformat_alloc_context();
av_strlcpy(ctx->filename, handle->params.filename, sizeof(ctx->filename));
ctx->oformat = av_guess_format(NULL, ctx->filename, NULL);
// FFmpeg sure likes to make things difficult.
#if defined(AVIO_FLAG_WRITE)
#define FFMPEG_FLAG_RW AVIO_FLAG_WRITE
#elif defined(AVIO_WRONLY)
#define FFMPEG_FLAG_RW AVIO_WRONLY
#elif defined(URL_WRONLY)
#define FFMPEG_FLAG_RW URL_WRONLY
#else
#define FFMPEG_FLAG_RW 2 // Seems to be consistent, but you never know.
#endif
#ifdef HAVE_FFMPEG_AVIO_OPEN
if (avio_open(&ctx->pb, ctx->filename, FFMPEG_FLAG_RW) < 0)
#else
if (url_fopen(&ctx->pb, ctx->filename, FFMPEG_FLAG_RW) < 0)
#endif
{
av_free(ctx);
return false;
}
#ifdef HAVE_FFMPEG_AVFORMAT_NEW_STREAM
AVStream *stream = avformat_new_stream(ctx, handle->video.encoder);
#else
unsigned stream_cnt = 0;
AVStream *stream = av_new_stream(ctx, stream_cnt++);
#endif
stream->codec = handle->video.codec;
if (ctx->oformat->flags & AVFMT_GLOBALHEADER)
handle->video.codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
handle->muxer.vstream = stream;
handle->muxer.vstream->sample_aspect_ratio = handle->video.codec->sample_aspect_ratio;
#ifdef HAVE_FFMPEG_AVFORMAT_NEW_STREAM
stream = avformat_new_stream(ctx, handle->audio.encoder);
#else
stream = av_new_stream(ctx, stream_cnt++);
#endif
stream->codec = handle->audio.codec;
if (ctx->oformat->flags & AVFMT_GLOBALHEADER)
handle->audio.codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
handle->muxer.astream = stream;
#ifdef HAVE_X264RGB // Avoids a warning at end about non-monotonically increasing DTS values. It seems to be harmless to disable this.
if (g_settings.video.h264_record)
ctx->oformat->flags |= AVFMT_TS_NONSTRICT;
#endif
av_dict_set(&ctx->metadata, "title", "SSNES video dump", 0);
#ifdef HAVE_FFMPEG_AVFORMAT_WRITE_HEADER
if (avformat_write_header(ctx, NULL) < 0)
#else
if (av_write_header(ctx) != 0)
#endif
return false;
handle->muxer.ctx = ctx;
return true;
}
#define MAX_FRAMES 32
static void ffemu_thread(void *data);
static bool init_thread(ffemu_t *handle)
{
handle->lock = slock_new();
handle->cond_lock = slock_new();
handle->cond = scond_new();
handle->audio_fifo = fifo_new(32000 * sizeof(int16_t) * handle->params.channels * MAX_FRAMES / 60);
handle->attr_fifo = fifo_new(sizeof(struct ffemu_video_data) * MAX_FRAMES);
handle->video_fifo = fifo_new(handle->params.fb_width * handle->params.fb_height *
handle->video.pix_size * MAX_FRAMES);
handle->alive = true;
handle->can_sleep = true;
handle->thread = sthread_create(ffemu_thread, handle);
assert(handle->lock && handle->cond_lock &&
handle->cond && handle->audio_fifo &&
handle->attr_fifo && handle->video_fifo && handle->thread);
return true;
}
static void deinit_thread(ffemu_t *handle)
{
if (handle->thread)
{
slock_lock(handle->cond_lock);
handle->alive = false;
handle->can_sleep = false;
slock_unlock(handle->cond_lock);
scond_signal(handle->cond);
sthread_join(handle->thread);
slock_free(handle->lock);
slock_free(handle->cond_lock);
scond_free(handle->cond);
handle->thread = NULL;
}
}
static void deinit_thread_buf(ffemu_t *handle)
{
if (handle->audio_fifo)
{
fifo_free(handle->audio_fifo);
handle->audio_fifo = NULL;
}
if (handle->attr_fifo)
{
fifo_free(handle->attr_fifo);
handle->attr_fifo = NULL;
}
if (handle->video_fifo)
{
fifo_free(handle->video_fifo);
handle->video_fifo = NULL;
}
}
ffemu_t *ffemu_new(const struct ffemu_params *params)
{
av_register_all();
ffemu_t *handle = (ffemu_t*)calloc(1, sizeof(*handle));
if (!handle)
goto error;
handle->params = *params;
if (!ffemu_init_video(&handle->video, &handle->params))
goto error;
if (!ffemu_init_audio(&handle->audio, &handle->params))
goto error;
if (!ffemu_init_muxer(handle))
goto error;
if (!init_thread(handle))
goto error;
return handle;
error:
ffemu_free(handle);
return NULL;
}
void ffemu_free(ffemu_t *handle)
{
if (handle)
{
deinit_thread(handle);
deinit_thread_buf(handle);
if (handle->audio.codec)
{
avcodec_close(handle->audio.codec);
av_free(handle->audio.codec);
}
if (handle->audio.buffer)
av_free(handle->audio.buffer);
if (handle->video.codec)
{
avcodec_close(handle->video.codec);
av_free(handle->video.codec);
}
if (handle->video.conv_frame)
av_free(handle->video.conv_frame);
if (handle->video.conv_frame_buf)
av_free(handle->video.conv_frame_buf);
if (handle->video.sws_ctx)
sws_freeContext(handle->video.sws_ctx);
free(handle);
}
}
bool ffemu_push_video(ffemu_t *handle, const struct ffemu_video_data *data)
{
for (;;)
{
slock_lock(handle->lock);
unsigned avail = fifo_write_avail(handle->attr_fifo);
slock_unlock(handle->lock);
if (!handle->alive)
return false;
if (avail >= sizeof(*data))
break;
slock_lock(handle->cond_lock);
if (handle->can_sleep)
{
handle->can_sleep = false;
scond_wait(handle->cond, handle->cond_lock);
handle->can_sleep = true;
}
else
scond_signal(handle->cond);
slock_unlock(handle->cond_lock);
}
slock_lock(handle->lock);
// Tightly pack our frame to conserve memory. libsnes tends to use a very large pitch.
struct ffemu_video_data attr_data = *data;
if (attr_data.is_dupe)
attr_data.width = attr_data.height = attr_data.pitch = 0;
else
attr_data.pitch = attr_data.width * handle->video.pix_size;
fifo_write(handle->attr_fifo, &attr_data, sizeof(attr_data));
unsigned offset = 0;
for (unsigned y = 0; y < attr_data.height; y++, offset += data->pitch)
fifo_write(handle->video_fifo, (const uint8_t*)data->data + offset, attr_data.pitch);
slock_unlock(handle->lock);
scond_signal(handle->cond);
return true;
}
bool ffemu_push_audio(ffemu_t *handle, const struct ffemu_audio_data *data)
{
for (;;)
{
slock_lock(handle->lock);
unsigned avail = fifo_write_avail(handle->audio_fifo);
slock_unlock(handle->lock);
if (!handle->alive)
return false;
if (avail >= data->frames * handle->params.channels * sizeof(int16_t))
break;
slock_lock(handle->cond_lock);
if (handle->can_sleep)
{
handle->can_sleep = false;
scond_wait(handle->cond, handle->cond_lock);
handle->can_sleep = true;
}
else
scond_signal(handle->cond);
slock_unlock(handle->cond_lock);
}
slock_lock(handle->lock);
fifo_write(handle->audio_fifo, data->data, data->frames * handle->params.channels * sizeof(int16_t));
slock_unlock(handle->lock);
scond_signal(handle->cond);
return true;
}
static bool encode_video(ffemu_t *handle, AVPacket *pkt, AVFrame *frame)
{
av_init_packet(pkt);
pkt->data = handle->video.outbuf;
pkt->size = handle->video.outbuf_size;
#ifdef HAVE_FFMPEG_AVCODEC_ENCODE_VIDEO2
int got_packet = 0;
if (avcodec_encode_video2(handle->video.codec, pkt, frame, &got_packet) < 0)
return false;
if (!got_packet)
{
pkt->size = 0;
pkt->pts = AV_NOPTS_VALUE;
pkt->dts = AV_NOPTS_VALUE;
return true;
}
if (pkt->pts != (int64_t)AV_NOPTS_VALUE)
{
pkt->pts = av_rescale_q(pkt->pts, handle->video.codec->time_base,
handle->muxer.vstream->time_base);
}
if (pkt->dts != (int64_t)AV_NOPTS_VALUE)
{
pkt->dts = av_rescale_q(pkt->dts, handle->video.codec->time_base,
handle->muxer.vstream->time_base);
}
#else
int outsize = avcodec_encode_video(handle->video.codec, handle->video.outbuf,
handle->video.outbuf_size, frame);
if (outsize < 0)
return false;
pkt->size = outsize;
if (handle->video.codec->coded_frame->pts != (int64_t)AV_NOPTS_VALUE)
{
pkt->pts = av_rescale_q(handle->video.codec->coded_frame->pts, handle->video.codec->time_base,
handle->muxer.vstream->time_base);
}
else
pkt->pts = AV_NOPTS_VALUE;
if (handle->video.codec->coded_frame->key_frame)
pkt->flags |= AV_PKT_FLAG_KEY;
#endif
pkt->stream_index = handle->muxer.vstream->index;
return true;
}
static bool ffemu_push_video_thread(ffemu_t *handle, const struct ffemu_video_data *data)
{
if (!data->is_dupe)
{
handle->video.sws_ctx = sws_getCachedContext(handle->video.sws_ctx, data->width, data->height, handle->video.fmt,
handle->params.out_width, handle->params.out_height, handle->video.pix_fmt, SWS_POINT,
NULL, NULL, NULL);
int linesize = data->pitch;
sws_scale(handle->video.sws_ctx, (const uint8_t* const*)&data->data, &linesize, 0,
data->height, handle->video.conv_frame->data, handle->video.conv_frame->linesize);
}
handle->video.conv_frame->pts = handle->video.frame_cnt;
AVPacket pkt;
if (!encode_video(handle, &pkt, handle->video.conv_frame))
return false;
if (pkt.size)
{
if (av_interleaved_write_frame(handle->muxer.ctx, &pkt) < 0)
return false;
}
handle->video.frame_cnt++;
return true;
}
static bool encode_audio(ffemu_t *handle, AVPacket *pkt, bool dry)
{
av_init_packet(pkt);
pkt->data = handle->audio.outbuf;
pkt->size = handle->audio.outbuf_size;
#ifdef HAVE_FFMPEG_AVCODEC_ENCODE_AUDIO2
AVFrame frame;
avcodec_get_frame_defaults(&frame);
frame.nb_samples = handle->audio.frames_in_buffer;
frame.pts = handle->audio.frame_cnt;
int samples_size = frame.nb_samples *
handle->audio.codec->channels *
sizeof(int16_t);
avcodec_fill_audio_frame(&frame, handle->audio.codec->channels,
handle->audio.codec->sample_fmt, (const uint8_t*)handle->audio.buffer,
samples_size, 1);
int got_packet = 0;
if (avcodec_encode_audio2(handle->audio.codec,
pkt, dry ? NULL : &frame, &got_packet) < 0)
return false;
if (!got_packet)
{
pkt->size = 0;
pkt->pts = AV_NOPTS_VALUE;
pkt->dts = AV_NOPTS_VALUE;
return true;
}
if (pkt->pts != (int64_t)AV_NOPTS_VALUE)
{
pkt->pts = av_rescale_q(pkt->pts,
handle->audio.codec->time_base,
handle->muxer.astream->time_base);
}
if (pkt->dts != (int64_t)AV_NOPTS_VALUE)
{
pkt->dts = av_rescale_q(pkt->dts,
handle->audio.codec->time_base,
handle->muxer.astream->time_base);
}
#else
if (dry)
return false;
memset(handle->audio.buffer + handle->audio.frames_in_buffer * handle->audio.codec->channels, 0,
(handle->audio.codec->frame_size - handle->audio.frames_in_buffer) *
handle->audio.codec->channels * sizeof(int16_t));
int out_size = avcodec_encode_audio(handle->audio.codec,
handle->audio.outbuf, handle->audio.outbuf_size, handle->audio.buffer);
if (out_size < 0)
return false;
if (out_size == 0)
{
pkt->size = 0;
return true;
}
pkt->size = out_size;
if (handle->audio.codec->coded_frame->pts != (int64_t)AV_NOPTS_VALUE)
{
pkt->pts = av_rescale_q(handle->audio.codec->coded_frame->pts,
handle->audio.codec->time_base,
handle->muxer.astream->time_base);
}
else
pkt->pts = AV_NOPTS_VALUE;
if (handle->audio.codec->coded_frame->key_frame)
pkt->flags |= AV_PKT_FLAG_KEY;
#endif
pkt->stream_index = handle->muxer.astream->index;
return true;
}
static bool ffemu_push_audio_thread(ffemu_t *handle, const struct ffemu_audio_data *data, bool require_block)
{
size_t written_frames = 0;
while (written_frames < data->frames)
{
size_t can_write = handle->audio.codec->frame_size - handle->audio.frames_in_buffer;
size_t write_left = data->frames - written_frames;
size_t write_frames = write_left > can_write ? can_write : write_left;
size_t write_size = write_frames * handle->params.channels * sizeof(int16_t);
size_t samples_in_buffer = handle->audio.frames_in_buffer * handle->params.channels;
size_t written_samples = written_frames * handle->params.channels;
memcpy(handle->audio.buffer + samples_in_buffer,
data->data + written_samples,
write_size);
written_frames += write_frames;
handle->audio.frames_in_buffer += write_frames;
if ((handle->audio.frames_in_buffer < (size_t)handle->audio.codec->frame_size) && require_block)
continue;
AVPacket pkt;
if (!encode_audio(handle, &pkt, false))
return false;
handle->audio.frames_in_buffer = 0;
handle->audio.frame_cnt += handle->audio.codec->frame_size;
if (pkt.size)
{
if (av_interleaved_write_frame(handle->muxer.ctx, &pkt) < 0)
return false;
}
}
return true;
}
static void ffemu_flush_audio(ffemu_t *handle, int16_t *audio_buf, size_t audio_buf_size)
{
size_t avail = fifo_read_avail(handle->audio_fifo);
if (avail)
{
fifo_read(handle->audio_fifo, audio_buf, avail);
struct ffemu_audio_data aud = {0};
aud.frames = avail / (sizeof(int16_t) * handle->params.channels);
aud.data = audio_buf;
ffemu_push_audio_thread(handle, &aud, false);
}
for (;;)
{
AVPacket pkt;
if (!encode_audio(handle, &pkt, true) || !pkt.size ||
av_interleaved_write_frame(handle->muxer.ctx, &pkt) < 0)
break;
}
}
static void ffemu_flush_video(ffemu_t *handle)
{
for (;;)
{
AVPacket pkt;
if (!encode_video(handle, &pkt, NULL) || !pkt.size ||
av_interleaved_write_frame(handle->muxer.ctx, &pkt) < 0)
break;
}
}
static void ffemu_flush_buffers(ffemu_t *handle)
{
void *video_buf = av_malloc(2 * handle->params.fb_width * handle->params.fb_height * handle->video.pix_size);
size_t audio_buf_size = 512 * handle->params.channels * sizeof(int16_t);
int16_t *audio_buf = (int16_t*)av_malloc(audio_buf_size);
// Try pushing data in an interleaving pattern to ease the work of the muxer a bit.
bool did_work;
do
{
did_work = false;
if (fifo_read_avail(handle->audio_fifo) >= audio_buf_size)
{
fifo_read(handle->audio_fifo, audio_buf, audio_buf_size);
struct ffemu_audio_data aud = {0};
aud.frames = 512;
aud.data = audio_buf;
ffemu_push_audio_thread(handle, &aud, true);
did_work = true;
}
struct ffemu_video_data attr_buf;
if (fifo_read_avail(handle->attr_fifo) >= sizeof(attr_buf))
{
fifo_read(handle->attr_fifo, &attr_buf, sizeof(attr_buf));
fifo_read(handle->video_fifo, video_buf, attr_buf.height * attr_buf.pitch);
attr_buf.data = video_buf;
ffemu_push_video_thread(handle, &attr_buf);
did_work = true;
}
} while (did_work);
// Flush out last audio.
ffemu_flush_audio(handle, audio_buf, audio_buf_size);
// Flush out last video.
ffemu_flush_video(handle);
av_free(video_buf);
av_free(audio_buf);
}
bool ffemu_finalize(ffemu_t *handle)
{
deinit_thread(handle);
// Flush out data still in buffers (internal, and FFmpeg internal).
ffemu_flush_buffers(handle);
deinit_thread_buf(handle);
// Write final data.
av_write_trailer(handle->muxer.ctx);
return true;
}
static void ffemu_thread(void *data)
{
ffemu_t *ff = (ffemu_t*)data;
// For some reason, FFmpeg has a tendency to crash if we don't overallocate a bit. :s
void *video_buf = av_malloc(2 * ff->params.fb_width * ff->params.fb_height * ff->video.pix_size);
assert(video_buf);
size_t audio_buf_size = 512 * ff->params.channels * sizeof(int16_t);
int16_t *audio_buf = (int16_t*)av_malloc(audio_buf_size);
assert(audio_buf);
while (ff->alive)
{
struct ffemu_video_data attr_buf;
bool avail_video = false;
bool avail_audio = false;
slock_lock(ff->lock);
if (fifo_read_avail(ff->attr_fifo) >= sizeof(attr_buf))
avail_video = true;
if (fifo_read_avail(ff->audio_fifo) >= audio_buf_size)
avail_audio = true;
slock_unlock(ff->lock);
if (!avail_video && !avail_audio)
{
slock_lock(ff->cond_lock);
if (ff->can_sleep)
{
ff->can_sleep = false;
scond_wait(ff->cond, ff->cond_lock);
ff->can_sleep = true;
}
else
scond_signal(ff->cond);
slock_unlock(ff->cond_lock);
}
if (avail_video)
{
slock_lock(ff->lock);
fifo_read(ff->attr_fifo, &attr_buf, sizeof(attr_buf));
fifo_read(ff->video_fifo, video_buf, attr_buf.height * attr_buf.pitch);
slock_unlock(ff->lock);
scond_signal(ff->cond);
attr_buf.data = video_buf;
ffemu_push_video_thread(ff, &attr_buf);
}
if (avail_audio)
{
slock_lock(ff->lock);
fifo_read(ff->audio_fifo, audio_buf, audio_buf_size);
slock_unlock(ff->lock);
scond_signal(ff->cond);
struct ffemu_audio_data aud = {0};
aud.frames = 512;
aud.data = audio_buf;
ffemu_push_audio_thread(ff, &aud, true);
}
}
av_free(video_buf);
av_free(audio_buf);
}
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