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FFmpeg/libavcodec/tests/avcodec.c
Andreas Rheinhardt 2b46ae6407 avcodec/codec_internal: Remove FF_CODEC_CAP_ALLOCATE_PROGRESS 
Before commit f025b8e110,
every frame-threaded decoder used ThreadFrames, even when
they did not have any inter-frame dependencies at all.
In order to distinguish those decoders that need the AVBuffer
for progress communication from those that do not (to avoid
the allocation for the latter), the former decoders were marked
with the FF_CODEC_CAP_ALLOCATE_PROGRESS internal codec cap.

Yet distinguishing these two can be done in a more natural way:
Don't use ThreadFrames when not needed and split ff_thread_get_buffer()
into a core function that calls the user's get_buffer2 callback
and a wrapper around it that also allocates the progress AVBuffer.
This has been done in 02220b88fc
and since that commit the ALLOCATE_PROGRESS cap was nearly redundant.

The only exception was WebP and VP8. WebP can contain VP8
and uses the VP8 decoder directly (i.e. they share the same
AVCodecContext). Both decoders are frame-threaded and VP8
has inter-frame dependencies (in general, not in valid WebP)
and therefore the ALLOCATE_PROGRESS cap. In order to avoid
allocating progress in case of a frame-threaded WebP decoder
the cap and the check for the cap has been kept in place.

Yet now the VP8 decoder has been switched to use ProgressFrames
and therefore there is just no reason any more for this check
and the cap. This commit therefore removes both.

Also change the value of FF_CODEC_CAP_USES_PROGRESSFRAMES
to leave no gaps.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-04-19 13:18:04 +02:00

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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/opt.h"
#include "libavcodec/codec.h"
#include "libavcodec/codec_desc.h"
#include "libavcodec/codec_internal.h"
static const char *get_type_string(enum AVMediaType type)
{
const char *ret = av_get_media_type_string(type);
return ret ? ret : "unknown";
}
#define AV_LOG(...) av_log(NULL, AV_LOG_FATAL, __VA_ARGS__)
#define ERR_INTERNAL(msg, ...) \
do { \
AV_LOG(msg, codec->name __VA_ARGS__); \
ret = 1; \
} while (0)
#define ERR(msg) ERR_INTERNAL(msg, )
#define ERR_EXT(msg, ...) ERR_INTERNAL(msg, , __VA_ARGS__)
static int priv_data_size_wrong(const FFCodec *codec)
{
if (codec->priv_data_size < 0 ||
codec->p.priv_class && codec->priv_data_size < sizeof(AVClass*))
return 1;
if (!codec->p.priv_class || !codec->p.priv_class->option)
return 0;
for (const AVOption *opt = codec->p.priv_class->option; opt->name; opt++) {
if (opt->offset >= codec->priv_data_size ||
opt->type == AV_OPT_TYPE_CONST && opt->offset != 0 ||
opt->type != AV_OPT_TYPE_CONST && (opt->offset < sizeof(AVClass*) || opt->offset < 0)) {
AV_LOG("Option %s offset %d nonsensical\n",
opt->name, opt->offset);
return 1;
}
}
return 0;
}
int main(void){
void *iter = NULL;
const AVCodec *codec = NULL;
int ret = 0;
while (codec = av_codec_iterate(&iter)) {
const FFCodec *const codec2 = ffcodec(codec);
const AVCodecDescriptor *desc;
int is_decoder = 0, is_encoder = 0;
if (!codec->name) {
AV_LOG("Codec for format %s has no name\n",
avcodec_get_name(codec->id));
ret = 1;
continue;
}
if (codec->type != AVMEDIA_TYPE_VIDEO &&
codec->type != AVMEDIA_TYPE_AUDIO &&
codec->type != AVMEDIA_TYPE_SUBTITLE)
ERR_EXT("Codec %s has unsupported type %s\n",
get_type_string(codec->type));
if (codec->type != AVMEDIA_TYPE_AUDIO) {
if (codec->ch_layouts || codec->sample_fmts ||
codec->supported_samplerates)
ERR("Non-audio codec %s has audio-only fields set\n");
if (codec->capabilities & (AV_CODEC_CAP_SMALL_LAST_FRAME |
AV_CODEC_CAP_CHANNEL_CONF |
AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
ERR("Non-audio codec %s has audio-only capabilities set\n");
}
if (codec->type != AVMEDIA_TYPE_VIDEO) {
if (codec->pix_fmts || codec->supported_framerates)
ERR("Non-video codec %s has video-only fields set\n");
if (codec2->caps_internal & FF_CODEC_CAP_EXPORTS_CROPPING)
ERR("Non-video codec %s exports cropping\n");
}
if (codec2->caps_internal & FF_CODEC_CAP_SLICE_THREAD_HAS_MF &&
!(codec->capabilities & AV_CODEC_CAP_SLICE_THREADS))
ERR("Codec %s wants mainfunction despite not being "
"slice-threading capable");
if (codec2->caps_internal & FF_CODEC_CAP_AUTO_THREADS &&
!(codec->capabilities & (AV_CODEC_CAP_FRAME_THREADS |
AV_CODEC_CAP_SLICE_THREADS |
AV_CODEC_CAP_OTHER_THREADS)))
ERR("Codec %s has private-only threading support\n");
switch (codec2->cb_type) {
case FF_CODEC_CB_TYPE_DECODE:
case FF_CODEC_CB_TYPE_DECODE_SUB:
case FF_CODEC_CB_TYPE_RECEIVE_FRAME:
is_decoder = 1;
break;
case FF_CODEC_CB_TYPE_ENCODE:
case FF_CODEC_CB_TYPE_ENCODE_SUB:
case FF_CODEC_CB_TYPE_RECEIVE_PACKET:
is_encoder = 1;
break;
default:
ERR("Codec %s has unknown cb_type\n");
continue;
}
if (is_decoder != av_codec_is_decoder(codec) ||
is_encoder != av_codec_is_encoder(codec)) {
ERR("Codec %s cb_type and av_codec_is_(de|en)coder inconsistent.\n");
continue;
}
#define CHECK(TYPE, type) (codec2->cb_type == FF_CODEC_CB_TYPE_ ## TYPE && !codec2->cb.type)
if (CHECK(DECODE, decode) || CHECK(DECODE_SUB, decode_sub) ||
CHECK(RECEIVE_PACKET, receive_packet) ||
CHECK(ENCODE, encode) || CHECK(ENCODE_SUB, encode_sub) ||
CHECK(RECEIVE_FRAME, receive_frame)) {
ERR_EXT("Codec %s does not implement its %s callback.\n",
is_decoder ? "decoding" : "encoding");
}
#undef CHECK
if (is_encoder) {
if ((codec->type == AVMEDIA_TYPE_SUBTITLE) != (codec2->cb_type == FF_CODEC_CB_TYPE_ENCODE_SUB))
ERR("Encoder %s is both subtitle encoder and not subtitle encoder.");
if (codec2->update_thread_context || codec2->update_thread_context_for_user || codec2->bsfs)
ERR("Encoder %s has decoder-only thread functions or bsf.\n");
if (codec->type == AVMEDIA_TYPE_AUDIO) {
if (!codec->sample_fmts) {
av_log(NULL, AV_LOG_FATAL, "Encoder %s is missing the sample_fmts field\n", codec->name);
ret = 1;
}
}
if (codec2->caps_internal & (FF_CODEC_CAP_USES_PROGRESSFRAMES |
FF_CODEC_CAP_SETS_PKT_DTS |
FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM |
FF_CODEC_CAP_EXPORTS_CROPPING |
FF_CODEC_CAP_SETS_FRAME_PROPS) ||
codec->capabilities & (AV_CODEC_CAP_AVOID_PROBING |
AV_CODEC_CAP_CHANNEL_CONF |
AV_CODEC_CAP_DRAW_HORIZ_BAND))
ERR("Encoder %s has decoder-only capabilities set\n");
if (codec->capabilities & AV_CODEC_CAP_FRAME_THREADS &&
codec->capabilities & AV_CODEC_CAP_ENCODER_FLUSH)
ERR("Frame-threaded encoder %s claims to support flushing\n");
if (codec->capabilities & AV_CODEC_CAP_FRAME_THREADS &&
codec->capabilities & AV_CODEC_CAP_DELAY)
ERR("Frame-threaded encoder %s claims to have delay\n");
if (codec2->caps_internal & FF_CODEC_CAP_EOF_FLUSH &&
!(codec->capabilities & AV_CODEC_CAP_DELAY))
ERR("EOF_FLUSH encoder %s is not marked as having delay\n");
} else {
if ((codec->type == AVMEDIA_TYPE_SUBTITLE) != (codec2->cb_type == FF_CODEC_CB_TYPE_DECODE_SUB))
ERR("Subtitle decoder %s does not implement decode_sub callback\n");
if (codec->type == AVMEDIA_TYPE_SUBTITLE && codec2->bsfs)
ERR("Automatic bitstream filtering unsupported for subtitles; "
"yet decoder %s has it set\n");
if (codec->capabilities & (AV_CODEC_CAP_SMALL_LAST_FRAME |
AV_CODEC_CAP_VARIABLE_FRAME_SIZE |
AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE |
AV_CODEC_CAP_ENCODER_FLUSH))
ERR("Decoder %s has encoder-only capabilities\n");
if (codec2->cb_type != FF_CODEC_CB_TYPE_DECODE &&
codec2->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS)
ERR("Decoder %s is marked as setting pkt_dts when it doesn't have"
"any effect\n");
}
if (priv_data_size_wrong(codec2))
ERR_EXT("Private context of codec %s is impossibly-sized (size %d).",
codec2->priv_data_size);
if (!(desc = avcodec_descriptor_get(codec->id))) {
ERR("Codec %s lacks a corresponding descriptor\n");
} else if (desc->type != codec->type)
ERR_EXT("The type of AVCodec %s and its AVCodecDescriptor differ: "
"%s vs %s\n",
get_type_string(codec->type), get_type_string(desc->type));
}
return ret;
}
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